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cpython/Modules/posixmodule.c
Christian Heimes db13c0c1b8
[3.11] gh-95174: Handle missing dup() and constants in WASI (GH-95229) (GH-95272) 
Co-authored-by: Christian Heimes <christian@python.org>
2022-07-31 16:39:41 +01:00

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/* POSIX module implementation */
/* This file is also used for Windows NT/MS-Win. In that case the
module actually calls itself 'nt', not 'posix', and a few
functions are either unimplemented or implemented differently. The source
assumes that for Windows NT, the macro 'MS_WINDOWS' is defined independent
of the compiler used. Different compilers define their own feature
test macro, e.g. '_MSC_VER'. */
#define PY_SSIZE_T_CLEAN
#include "Python.h"
// Include <windows.h> before pycore internal headers. FSCTL_GET_REPARSE_POINT
// is not exported by <windows.h> if the WIN32_LEAN_AND_MEAN macro is defined,
// whereas pycore_condvar.h defines the WIN32_LEAN_AND_MEAN macro.
#ifdef MS_WINDOWS
# include <windows.h>
# include <pathcch.h>
#endif
#ifdef __VXWORKS__
# include "pycore_bitutils.h" // _Py_popcount32()
#endif
#include "pycore_call.h" // _PyObject_CallNoArgs()
#include "pycore_ceval.h" // _PyEval_ReInitThreads()
#include "pycore_fileutils.h" // _Py_closerange()
#include "pycore_import.h" // _PyImport_ReInitLock()
#include "pycore_initconfig.h" // _PyStatus_EXCEPTION()
#include "pycore_moduleobject.h" // _PyModule_GetState()
#include "pycore_object.h" // _PyObject_LookupSpecial()
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_signal.h" // Py_NSIG
#include "structmember.h" // PyMemberDef
#ifndef MS_WINDOWS
# include "posixmodule.h"
#else
# include "winreparse.h"
#endif
#if !defined(EX_OK) && defined(EXIT_SUCCESS)
# define EX_OK EXIT_SUCCESS
#endif
/* On android API level 21, 'AT_EACCESS' is not declared although
* HAVE_FACCESSAT is defined. */
#ifdef __ANDROID__
# undef HAVE_FACCESSAT
#endif
#include <stdio.h> // ctermid()
#include <stdlib.h> // system()
/*
* A number of APIs are available on macOS from a certain macOS version.
* To support building with a new SDK while deploying to older versions
* the availability test is split into two:
* - HAVE_<FUNCTION>: The configure check for compile time availability
* - HAVE_<FUNCTION>_RUNTIME: Runtime check for availability
*
* The latter is always true when not on macOS, or when using a compiler
* that does not support __has_builtin (older versions of Xcode).
*
* Due to compiler restrictions there is one valid use of HAVE_<FUNCTION>_RUNTIME:
* if (HAVE_<FUNCTION>_RUNTIME) { ... }
*
* In mixing the test with other tests or using negations will result in compile
* errors.
*/
#if defined(__APPLE__)
#if defined(__has_builtin)
#if __has_builtin(__builtin_available)
#define HAVE_BUILTIN_AVAILABLE 1
#endif
#endif
#ifdef HAVE_BUILTIN_AVAILABLE
# define HAVE_FSTATAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_FACCESSAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_FCHMODAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_FCHOWNAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_LINKAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_FDOPENDIR_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_MKDIRAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_RENAMEAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_UNLINKAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_OPENAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_READLINKAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_SYMLINKAT_RUNTIME __builtin_available(macOS 10.10, iOS 8.0, *)
# define HAVE_FUTIMENS_RUNTIME __builtin_available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
# define HAVE_UTIMENSAT_RUNTIME __builtin_available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
# define HAVE_PWRITEV_RUNTIME __builtin_available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
# define HAVE_POSIX_SPAWN_SETSID_RUNTIME __builtin_available(macOS 10.15, *)
#else /* Xcode 8 or earlier */
/* __builtin_available is not present in these compilers, but
* some of the symbols might be weak linked (10.10 SDK or later
* deploying on 10.9.
*
* Fall back to the older style of availability checking for
* symbols introduced in macOS 10.10.
*/
# ifdef HAVE_FSTATAT
# define HAVE_FSTATAT_RUNTIME (fstatat != NULL)
# endif
# ifdef HAVE_FACCESSAT
# define HAVE_FACCESSAT_RUNTIME (faccessat != NULL)
# endif
# ifdef HAVE_FCHMODAT
# define HAVE_FCHMODAT_RUNTIME (fchmodat != NULL)
# endif
# ifdef HAVE_FCHOWNAT
# define HAVE_FCHOWNAT_RUNTIME (fchownat != NULL)
# endif
# ifdef HAVE_LINKAT
# define HAVE_LINKAT_RUNTIME (linkat != NULL)
# endif
# ifdef HAVE_FDOPENDIR
# define HAVE_FDOPENDIR_RUNTIME (fdopendir != NULL)
# endif
# ifdef HAVE_MKDIRAT
# define HAVE_MKDIRAT_RUNTIME (mkdirat != NULL)
# endif
# ifdef HAVE_RENAMEAT
# define HAVE_RENAMEAT_RUNTIME (renameat != NULL)
# endif
# ifdef HAVE_UNLINKAT
# define HAVE_UNLINKAT_RUNTIME (unlinkat != NULL)
# endif
# ifdef HAVE_OPENAT
# define HAVE_OPENAT_RUNTIME (openat != NULL)
# endif
# ifdef HAVE_READLINKAT
# define HAVE_READLINKAT_RUNTIME (readlinkat != NULL)
# endif
# ifdef HAVE_SYMLINKAT
# define HAVE_SYMLINKAT_RUNTIME (symlinkat != NULL)
# endif
#endif
#ifdef HAVE_FUTIMESAT
/* Some of the logic for weak linking depends on this assertion */
# error "HAVE_FUTIMESAT unexpectedly defined"
#endif
#else
# define HAVE_FSTATAT_RUNTIME 1
# define HAVE_FACCESSAT_RUNTIME 1
# define HAVE_FCHMODAT_RUNTIME 1
# define HAVE_FCHOWNAT_RUNTIME 1
# define HAVE_LINKAT_RUNTIME 1
# define HAVE_FDOPENDIR_RUNTIME 1
# define HAVE_MKDIRAT_RUNTIME 1
# define HAVE_RENAMEAT_RUNTIME 1
# define HAVE_UNLINKAT_RUNTIME 1
# define HAVE_OPENAT_RUNTIME 1
# define HAVE_READLINKAT_RUNTIME 1
# define HAVE_SYMLINKAT_RUNTIME 1
# define HAVE_FUTIMENS_RUNTIME 1
# define HAVE_UTIMENSAT_RUNTIME 1
# define HAVE_PWRITEV_RUNTIME 1
#endif
#ifdef __cplusplus
extern "C" {
#endif
PyDoc_STRVAR(posix__doc__,
"This module provides access to operating system functionality that is\n\
standardized by the C Standard and the POSIX standard (a thinly\n\
disguised Unix interface). Refer to the library manual and\n\
corresponding Unix manual entries for more information on calls.");
#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#ifdef HAVE_SYS_SYSMACROS_H
/* GNU C Library: major(), minor(), makedev() */
# include <sys/sysmacros.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif /* HAVE_SYS_TYPES_H */
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif /* HAVE_SYS_STAT_H */
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h> // WNOHANG
#endif
#ifdef HAVE_LINUX_WAIT_H
# include <linux/wait.h> // P_PIDFD
#endif
#ifdef HAVE_SIGNAL_H
# include <signal.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_GRP_H
# include <grp.h>
#endif
#ifdef HAVE_SYSEXITS_H
# include <sysexits.h>
#endif
#ifdef HAVE_SYS_LOADAVG_H
# include <sys/loadavg.h>
#endif
#ifdef HAVE_SYS_SENDFILE_H
# include <sys/sendfile.h>
#endif
#if defined(__APPLE__)
# include <copyfile.h>
#endif
#ifdef HAVE_SCHED_H
# include <sched.h>
#endif
#ifdef HAVE_COPY_FILE_RANGE
# include <unistd.h>
#endif
#if !defined(CPU_ALLOC) && defined(HAVE_SCHED_SETAFFINITY)
# undef HAVE_SCHED_SETAFFINITY
#endif
#if defined(HAVE_SYS_XATTR_H) && defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__GNU__)
# define USE_XATTRS
#endif
#ifdef USE_XATTRS
# include <sys/xattr.h>
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__)
# ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif
#endif
#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif
#ifdef __hpux
# include <sys/mpctl.h>
#endif
#if defined(__DragonFly__) || \
defined(__OpenBSD__) || \
defined(__FreeBSD__) || \
defined(__NetBSD__) || \
defined(__APPLE__)
# include <sys/sysctl.h>
#endif
#ifdef HAVE_LINUX_RANDOM_H
# include <linux/random.h>
#endif
#ifdef HAVE_GETRANDOM_SYSCALL
# include <sys/syscall.h>
#endif
#if defined(MS_WINDOWS)
# define TERMSIZE_USE_CONIO
#elif defined(HAVE_SYS_IOCTL_H)
# include <sys/ioctl.h>
# if defined(HAVE_TERMIOS_H)
# include <termios.h>
# endif
# if defined(TIOCGWINSZ)
# define TERMSIZE_USE_IOCTL
# endif
#endif /* MS_WINDOWS */
/* Various compilers have only certain posix functions */
/* XXX Gosh I wish these were all moved into pyconfig.h */
#if defined(__WATCOMC__) && !defined(__QNX__) /* Watcom compiler */
# define HAVE_OPENDIR 1
# define HAVE_SYSTEM 1
# include <process.h>
#else
# ifdef _MSC_VER
/* Microsoft compiler */
# define HAVE_GETPPID 1
# define HAVE_GETLOGIN 1
# define HAVE_SPAWNV 1
# define HAVE_EXECV 1
# define HAVE_WSPAWNV 1
# define HAVE_WEXECV 1
# define HAVE_PIPE 1
# define HAVE_SYSTEM 1
# define HAVE_CWAIT 1
# define HAVE_FSYNC 1
# define fsync _commit
# endif /* _MSC_VER */
#endif /* ! __WATCOMC__ || __QNX__ */
/*[clinic input]
# one of the few times we lie about this name!
module os
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=94a0f0f978acae17]*/
#ifndef _MSC_VER
#if defined(__sgi)&&_COMPILER_VERSION>=700
/* declare ctermid_r if compiling with MIPSPro 7.x in ANSI C mode
(default) */
extern char *ctermid_r(char *);
#endif
#endif /* !_MSC_VER */
#if defined(__VXWORKS__)
# include <vxCpuLib.h>
# include <rtpLib.h>
# include <wait.h>
# include <taskLib.h>
# ifndef _P_WAIT
# define _P_WAIT 0
# define _P_NOWAIT 1
# define _P_NOWAITO 1
# endif
#endif /* __VXWORKS__ */
#ifdef HAVE_POSIX_SPAWN
# include <spawn.h>
#endif
#ifdef HAVE_UTIME_H
# include <utime.h>
#endif /* HAVE_UTIME_H */
#ifdef HAVE_SYS_UTIME_H
# include <sys/utime.h>
# define HAVE_UTIME_H /* pretend we do for the rest of this file */
#endif /* HAVE_SYS_UTIME_H */
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif /* HAVE_SYS_TIMES_H */
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif /* HAVE_SYS_PARAM_H */
#ifdef HAVE_SYS_UTSNAME_H
# include <sys/utsname.h>
#endif /* HAVE_SYS_UTSNAME_H */
#ifdef HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
#else
# if defined(__WATCOMC__) && !defined(__QNX__)
# include <direct.h>
# define NAMLEN(dirent) strlen((dirent)->d_name)
# else
# define dirent direct
# define NAMLEN(dirent) (dirent)->d_namlen
# endif
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#ifdef _MSC_VER
# ifdef HAVE_DIRECT_H
# include <direct.h>
# endif
# ifdef HAVE_IO_H
# include <io.h>
# endif
# ifdef HAVE_PROCESS_H
# include <process.h>
# endif
# ifndef IO_REPARSE_TAG_SYMLINK
# define IO_REPARSE_TAG_SYMLINK (0xA000000CL)
# endif
# ifndef IO_REPARSE_TAG_MOUNT_POINT
# define IO_REPARSE_TAG_MOUNT_POINT (0xA0000003L)
# endif
# include "osdefs.h" // SEP
# include <malloc.h>
# include <windows.h>
# include <shellapi.h> // ShellExecute()
# include <lmcons.h> // UNLEN
# define HAVE_SYMLINK
#endif /* _MSC_VER */
#ifndef MAXPATHLEN
# if defined(PATH_MAX) && PATH_MAX > 1024
# define MAXPATHLEN PATH_MAX
# else
# define MAXPATHLEN 1024
# endif
#endif /* MAXPATHLEN */
#ifdef UNION_WAIT
/* Emulate some macros on systems that have a union instead of macros */
# ifndef WIFEXITED
# define WIFEXITED(u_wait) (!(u_wait).w_termsig && !(u_wait).w_coredump)
# endif
# ifndef WEXITSTATUS
# define WEXITSTATUS(u_wait) (WIFEXITED(u_wait)?((u_wait).w_retcode):-1)
# endif
# ifndef WTERMSIG
# define WTERMSIG(u_wait) ((u_wait).w_termsig)
# endif
# define WAIT_TYPE union wait
# define WAIT_STATUS_INT(s) (s.w_status)
#else
/* !UNION_WAIT */
# define WAIT_TYPE int
# define WAIT_STATUS_INT(s) (s)
#endif /* UNION_WAIT */
/* Don't use the "_r" form if we don't need it (also, won't have a
prototype for it, at least on Solaris -- maybe others as well?). */
#if defined(HAVE_CTERMID_R)
# define USE_CTERMID_R
#endif
/* choose the appropriate stat and fstat functions and return structs */
#undef STAT
#undef FSTAT
#undef STRUCT_STAT
#ifdef MS_WINDOWS
# define STAT win32_stat
# define LSTAT win32_lstat
# define FSTAT _Py_fstat_noraise
# define STRUCT_STAT struct _Py_stat_struct
#else
# define STAT stat
# define LSTAT lstat
# define FSTAT fstat
# define STRUCT_STAT struct stat
#endif
#if defined(MAJOR_IN_MKDEV)
# include <sys/mkdev.h>
#else
# if defined(MAJOR_IN_SYSMACROS)
# include <sys/sysmacros.h>
# endif
# if defined(HAVE_MKNOD) && defined(HAVE_SYS_MKDEV_H)
# include <sys/mkdev.h>
# endif
#endif
#ifdef MS_WINDOWS
# define INITFUNC PyInit_nt
# define MODNAME "nt"
#else
# define INITFUNC PyInit_posix
# define MODNAME "posix"
#endif
#if defined(__sun)
/* Something to implement in autoconf, not present in autoconf 2.69 */
# define HAVE_STRUCT_STAT_ST_FSTYPE 1
#endif
/* memfd_create is either defined in sys/mman.h or sys/memfd.h
* linux/memfd.h defines additional flags
*/
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#ifdef HAVE_SYS_MEMFD_H
# include <sys/memfd.h>
#endif
#ifdef HAVE_LINUX_MEMFD_H
# include <linux/memfd.h>
#endif
/* eventfd() */
#ifdef HAVE_SYS_EVENTFD_H
# include <sys/eventfd.h>
#endif
#ifdef _Py_MEMORY_SANITIZER
# include <sanitizer/msan_interface.h>
#endif
#ifdef HAVE_FORK
static void
run_at_forkers(PyObject *lst, int reverse)
{
Py_ssize_t i;
PyObject *cpy;
if (lst != NULL) {
assert(PyList_CheckExact(lst));
/* Use a list copy in case register_at_fork() is called from
* one of the callbacks.
*/
cpy = PyList_GetSlice(lst, 0, PyList_GET_SIZE(lst));
if (cpy == NULL)
PyErr_WriteUnraisable(lst);
else {
if (reverse)
PyList_Reverse(cpy);
for (i = 0; i < PyList_GET_SIZE(cpy); i++) {
PyObject *func, *res;
func = PyList_GET_ITEM(cpy, i);
res = _PyObject_CallNoArgs(func);
if (res == NULL)
PyErr_WriteUnraisable(func);
else
Py_DECREF(res);
}
Py_DECREF(cpy);
}
}
}
void
PyOS_BeforeFork(void)
{
run_at_forkers(_PyInterpreterState_GET()->before_forkers, 1);
_PyImport_AcquireLock();
}
void
PyOS_AfterFork_Parent(void)
{
if (_PyImport_ReleaseLock() <= 0)
Py_FatalError("failed releasing import lock after fork");
run_at_forkers(_PyInterpreterState_GET()->after_forkers_parent, 0);
}
void
PyOS_AfterFork_Child(void)
{
PyStatus status;
_PyRuntimeState *runtime = &_PyRuntime;
status = _PyGILState_Reinit(runtime);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
PyThreadState *tstate = _PyThreadState_GET();
_Py_EnsureTstateNotNULL(tstate);
status = _PyEval_ReInitThreads(tstate);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
status = _PyImport_ReInitLock();
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
_PySignal_AfterFork();
status = _PyRuntimeState_ReInitThreads(runtime);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
status = _PyInterpreterState_DeleteExceptMain(runtime);
if (_PyStatus_EXCEPTION(status)) {
goto fatal_error;
}
assert(_PyThreadState_GET() == tstate);
run_at_forkers(tstate->interp->after_forkers_child, 0);
return;
fatal_error:
Py_ExitStatusException(status);
}
static int
register_at_forker(PyObject **lst, PyObject *func)
{
if (func == NULL) /* nothing to register? do nothing. */
return 0;
if (*lst == NULL) {
*lst = PyList_New(0);
if (*lst == NULL)
return -1;
}
return PyList_Append(*lst, func);
}
#endif /* HAVE_FORK */
/* Legacy wrapper */
void
PyOS_AfterFork(void)
{
#ifdef HAVE_FORK
PyOS_AfterFork_Child();
#endif
}
#ifdef MS_WINDOWS
/* defined in fileutils.c */
void _Py_time_t_to_FILE_TIME(time_t, int, FILETIME *);
void _Py_attribute_data_to_stat(BY_HANDLE_FILE_INFORMATION *,
ULONG, struct _Py_stat_struct *);
#endif
#ifndef MS_WINDOWS
PyObject *
_PyLong_FromUid(uid_t uid)
{
if (uid == (uid_t)-1)
return PyLong_FromLong(-1);
return PyLong_FromUnsignedLong(uid);
}
PyObject *
_PyLong_FromGid(gid_t gid)
{
if (gid == (gid_t)-1)
return PyLong_FromLong(-1);
return PyLong_FromUnsignedLong(gid);
}
int
_Py_Uid_Converter(PyObject *obj, uid_t *p)
{
uid_t uid;
PyObject *index;
int overflow;
long result;
unsigned long uresult;
index = _PyNumber_Index(obj);
if (index == NULL) {
PyErr_Format(PyExc_TypeError,
"uid should be integer, not %.200s",
_PyType_Name(Py_TYPE(obj)));
return 0;
}
/*
* Handling uid_t is complicated for two reasons:
* * Although uid_t is (always?) unsigned, it still
* accepts -1.
* * We don't know its size in advance--it may be
* bigger than an int, or it may be smaller than
* a long.
*
* So a bit of defensive programming is in order.
* Start with interpreting the value passed
* in as a signed long and see if it works.
*/
result = PyLong_AsLongAndOverflow(index, &overflow);
if (!overflow) {
uid = (uid_t)result;
if (result == -1) {
if (PyErr_Occurred())
goto fail;
/* It's a legitimate -1, we're done. */
goto success;
}
/* Any other negative number is disallowed. */
if (result < 0)
goto underflow;
/* Ensure the value wasn't truncated. */
if (sizeof(uid_t) < sizeof(long) &&
(long)uid != result)
goto underflow;
goto success;
}
if (overflow < 0)
goto underflow;
/*
* Okay, the value overflowed a signed long. If it
* fits in an *unsigned* long, it may still be okay,
* as uid_t may be unsigned long on this platform.
*/
uresult = PyLong_AsUnsignedLong(index);
if (PyErr_Occurred()) {
if (PyErr_ExceptionMatches(PyExc_OverflowError))
goto overflow;
goto fail;
}
uid = (uid_t)uresult;
/*
* If uid == (uid_t)-1, the user actually passed in ULONG_MAX,
* but this value would get interpreted as (uid_t)-1 by chown
* and its siblings. That's not what the user meant! So we
* throw an overflow exception instead. (We already
* handled a real -1 with PyLong_AsLongAndOverflow() above.)
*/
if (uid == (uid_t)-1)
goto overflow;
/* Ensure the value wasn't truncated. */
if (sizeof(uid_t) < sizeof(long) &&
(unsigned long)uid != uresult)
goto overflow;
/* fallthrough */
success:
Py_DECREF(index);
*p = uid;
return 1;
underflow:
PyErr_SetString(PyExc_OverflowError,
"uid is less than minimum");
goto fail;
overflow:
PyErr_SetString(PyExc_OverflowError,
"uid is greater than maximum");
/* fallthrough */
fail:
Py_DECREF(index);
return 0;
}
int
_Py_Gid_Converter(PyObject *obj, gid_t *p)
{
gid_t gid;
PyObject *index;
int overflow;
long result;
unsigned long uresult;
index = _PyNumber_Index(obj);
if (index == NULL) {
PyErr_Format(PyExc_TypeError,
"gid should be integer, not %.200s",
_PyType_Name(Py_TYPE(obj)));
return 0;
}
/*
* Handling gid_t is complicated for two reasons:
* * Although gid_t is (always?) unsigned, it still
* accepts -1.
* * We don't know its size in advance--it may be
* bigger than an int, or it may be smaller than
* a long.
*
* So a bit of defensive programming is in order.
* Start with interpreting the value passed
* in as a signed long and see if it works.
*/
result = PyLong_AsLongAndOverflow(index, &overflow);
if (!overflow) {
gid = (gid_t)result;
if (result == -1) {
if (PyErr_Occurred())
goto fail;
/* It's a legitimate -1, we're done. */
goto success;
}
/* Any other negative number is disallowed. */
if (result < 0) {
goto underflow;
}
/* Ensure the value wasn't truncated. */
if (sizeof(gid_t) < sizeof(long) &&
(long)gid != result)
goto underflow;
goto success;
}
if (overflow < 0)
goto underflow;
/*
* Okay, the value overflowed a signed long. If it
* fits in an *unsigned* long, it may still be okay,
* as gid_t may be unsigned long on this platform.
*/
uresult = PyLong_AsUnsignedLong(index);
if (PyErr_Occurred()) {
if (PyErr_ExceptionMatches(PyExc_OverflowError))
goto overflow;
goto fail;
}
gid = (gid_t)uresult;
/*
* If gid == (gid_t)-1, the user actually passed in ULONG_MAX,
* but this value would get interpreted as (gid_t)-1 by chown
* and its siblings. That's not what the user meant! So we
* throw an overflow exception instead. (We already
* handled a real -1 with PyLong_AsLongAndOverflow() above.)
*/
if (gid == (gid_t)-1)
goto overflow;
/* Ensure the value wasn't truncated. */
if (sizeof(gid_t) < sizeof(long) &&
(unsigned long)gid != uresult)
goto overflow;
/* fallthrough */
success:
Py_DECREF(index);
*p = gid;
return 1;
underflow:
PyErr_SetString(PyExc_OverflowError,
"gid is less than minimum");
goto fail;
overflow:
PyErr_SetString(PyExc_OverflowError,
"gid is greater than maximum");
/* fallthrough */
fail:
Py_DECREF(index);
return 0;
}
#endif /* MS_WINDOWS */
#define _PyLong_FromDev PyLong_FromLongLong
#if (defined(HAVE_MKNOD) && defined(HAVE_MAKEDEV)) || defined(HAVE_DEVICE_MACROS)
static int
_Py_Dev_Converter(PyObject *obj, void *p)
{
*((dev_t *)p) = PyLong_AsUnsignedLongLong(obj);
if (PyErr_Occurred())
return 0;
return 1;
}
#endif /* (HAVE_MKNOD && HAVE_MAKEDEV) || HAVE_DEVICE_MACROS */
#ifdef AT_FDCWD
/*
* Why the (int) cast? Solaris 10 defines AT_FDCWD as 0xffd19553 (-3041965);
* without the int cast, the value gets interpreted as uint (4291925331),
* which doesn't play nicely with all the initializer lines in this file that
* look like this:
* int dir_fd = DEFAULT_DIR_FD;
*/
#define DEFAULT_DIR_FD (int)AT_FDCWD
#else
#define DEFAULT_DIR_FD (-100)
#endif
static int
_fd_converter(PyObject *o, int *p)
{
int overflow;
long long_value;
PyObject *index = _PyNumber_Index(o);
if (index == NULL) {
return 0;
}
assert(PyLong_Check(index));
long_value = PyLong_AsLongAndOverflow(index, &overflow);
Py_DECREF(index);
assert(!PyErr_Occurred());
if (overflow > 0 || long_value > INT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"fd is greater than maximum");
return 0;
}
if (overflow < 0 || long_value < INT_MIN) {
PyErr_SetString(PyExc_OverflowError,
"fd is less than minimum");
return 0;
}
*p = (int)long_value;
return 1;
}
static int
dir_fd_converter(PyObject *o, void *p)
{
if (o == Py_None) {
*(int *)p = DEFAULT_DIR_FD;
return 1;
}
else if (PyIndex_Check(o)) {
return _fd_converter(o, (int *)p);
}
else {
PyErr_Format(PyExc_TypeError,
"argument should be integer or None, not %.200s",
_PyType_Name(Py_TYPE(o)));
return 0;
}
}
typedef struct {
PyObject *billion;
PyObject *DirEntryType;
PyObject *ScandirIteratorType;
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
PyObject *SchedParamType;
#endif
PyObject *StatResultType;
PyObject *StatVFSResultType;
PyObject *TerminalSizeType;
PyObject *TimesResultType;
PyObject *UnameResultType;
#if defined(HAVE_WAITID) && !defined(__APPLE__)
PyObject *WaitidResultType;
#endif
#if defined(HAVE_WAIT3) || defined(HAVE_WAIT4)
PyObject *struct_rusage;
#endif
PyObject *st_mode;
} _posixstate;
static inline _posixstate*
get_posix_state(PyObject *module)
{
void *state = _PyModule_GetState(module);
assert(state != NULL);
return (_posixstate *)state;
}
/*
* A PyArg_ParseTuple "converter" function
* that handles filesystem paths in the manner
* preferred by the os module.
*
* path_converter accepts (Unicode) strings and their
* subclasses, and bytes and their subclasses. What
* it does with the argument depends on the platform:
*
* * On Windows, if we get a (Unicode) string we
* extract the wchar_t * and return it; if we get
* bytes we decode to wchar_t * and return that.
*
* * On all other platforms, strings are encoded
* to bytes using PyUnicode_FSConverter, then we
* extract the char * from the bytes object and
* return that.
*
* path_converter also optionally accepts signed
* integers (representing open file descriptors) instead
* of path strings.
*
* Input fields:
* path.nullable
* If nonzero, the path is permitted to be None.
* path.allow_fd
* If nonzero, the path is permitted to be a file handle
* (a signed int) instead of a string.
* path.function_name
* If non-NULL, path_converter will use that as the name
* of the function in error messages.
* (If path.function_name is NULL it omits the function name.)
* path.argument_name
* If non-NULL, path_converter will use that as the name
* of the parameter in error messages.
* (If path.argument_name is NULL it uses "path".)
*
* Output fields:
* path.wide
* Points to the path if it was expressed as Unicode
* and was not encoded. (Only used on Windows.)
* path.narrow
* Points to the path if it was expressed as bytes,
* or it was Unicode and was encoded to bytes. (On Windows,
* is a non-zero integer if the path was expressed as bytes.
* The type is deliberately incompatible to prevent misuse.)
* path.fd
* Contains a file descriptor if path.accept_fd was true
* and the caller provided a signed integer instead of any
* sort of string.
*
* WARNING: if your "path" parameter is optional, and is
* unspecified, path_converter will never get called.
* So if you set allow_fd, you *MUST* initialize path.fd = -1
* yourself!
* path.length
* The length of the path in characters, if specified as
* a string.
* path.object
* The original object passed in (if get a PathLike object,
* the result of PyOS_FSPath() is treated as the original object).
* Own a reference to the object.
* path.cleanup
* For internal use only. May point to a temporary object.
* (Pay no attention to the man behind the curtain.)
*
* At most one of path.wide or path.narrow will be non-NULL.
* If path was None and path.nullable was set,
* or if path was an integer and path.allow_fd was set,
* both path.wide and path.narrow will be NULL
* and path.length will be 0.
*
* path_converter takes care to not write to the path_t
* unless it's successful. However it must reset the
* "cleanup" field each time it's called.
*
* Use as follows:
* path_t path;
* memset(&path, 0, sizeof(path));
* PyArg_ParseTuple(args, "O&", path_converter, &path);
* // ... use values from path ...
* path_cleanup(&path);
*
* (Note that if PyArg_Parse fails you don't need to call
* path_cleanup(). However it is safe to do so.)
*/
typedef struct {
const char *function_name;
const char *argument_name;
int nullable;
int allow_fd;
const wchar_t *wide;
#ifdef MS_WINDOWS
BOOL narrow;
#else
const char *narrow;
#endif
int fd;
Py_ssize_t length;
PyObject *object;
PyObject *cleanup;
} path_t;
#ifdef MS_WINDOWS
#define PATH_T_INITIALIZE(function_name, argument_name, nullable, allow_fd) \
{function_name, argument_name, nullable, allow_fd, NULL, FALSE, -1, 0, NULL, NULL}
#else
#define PATH_T_INITIALIZE(function_name, argument_name, nullable, allow_fd) \
{function_name, argument_name, nullable, allow_fd, NULL, NULL, -1, 0, NULL, NULL}
#endif
static void
path_cleanup(path_t *path)
{
#if !USE_UNICODE_WCHAR_CACHE
wchar_t *wide = (wchar_t *)path->wide;
path->wide = NULL;
PyMem_Free(wide);
#endif /* USE_UNICODE_WCHAR_CACHE */
Py_CLEAR(path->object);
Py_CLEAR(path->cleanup);
}
static int
path_converter(PyObject *o, void *p)
{
path_t *path = (path_t *)p;
PyObject *bytes = NULL;
Py_ssize_t length = 0;
int is_index, is_buffer, is_bytes, is_unicode;
const char *narrow;
#ifdef MS_WINDOWS
PyObject *wo = NULL;
wchar_t *wide = NULL;
#endif
#define FORMAT_EXCEPTION(exc, fmt) \
PyErr_Format(exc, "%s%s" fmt, \
path->function_name ? path->function_name : "", \
path->function_name ? ": " : "", \
path->argument_name ? path->argument_name : "path")
/* Py_CLEANUP_SUPPORTED support */
if (o == NULL) {
path_cleanup(path);
return 1;
}
/* Ensure it's always safe to call path_cleanup(). */
path->object = path->cleanup = NULL;
/* path->object owns a reference to the original object */
Py_INCREF(o);
if ((o == Py_None) && path->nullable) {
path->wide = NULL;
#ifdef MS_WINDOWS
path->narrow = FALSE;
#else
path->narrow = NULL;
#endif
path->fd = -1;
goto success_exit;
}
/* Only call this here so that we don't treat the return value of
os.fspath() as an fd or buffer. */
is_index = path->allow_fd && PyIndex_Check(o);
is_buffer = PyObject_CheckBuffer(o);
is_bytes = PyBytes_Check(o);
is_unicode = PyUnicode_Check(o);
if (!is_index && !is_buffer && !is_unicode && !is_bytes) {
/* Inline PyOS_FSPath() for better error messages. */
PyObject *func, *res;
func = _PyObject_LookupSpecial(o, &_Py_ID(__fspath__));
if (NULL == func) {
goto error_format;
}
res = _PyObject_CallNoArgs(func);
Py_DECREF(func);
if (NULL == res) {
goto error_exit;
}
else if (PyUnicode_Check(res)) {
is_unicode = 1;
}
else if (PyBytes_Check(res)) {
is_bytes = 1;
}
else {
PyErr_Format(PyExc_TypeError,
"expected %.200s.__fspath__() to return str or bytes, "
"not %.200s", _PyType_Name(Py_TYPE(o)),
_PyType_Name(Py_TYPE(res)));
Py_DECREF(res);
goto error_exit;
}
/* still owns a reference to the original object */
Py_DECREF(o);
o = res;
}
if (is_unicode) {
#ifdef MS_WINDOWS
#if USE_UNICODE_WCHAR_CACHE
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
wide = PyUnicode_AsUnicodeAndSize(o, &length);
_Py_COMP_DIAG_POP
#else /* USE_UNICODE_WCHAR_CACHE */
wide = PyUnicode_AsWideCharString(o, &length);
#endif /* USE_UNICODE_WCHAR_CACHE */
if (!wide) {
goto error_exit;
}
if (length > 32767) {
FORMAT_EXCEPTION(PyExc_ValueError, "%s too long for Windows");
goto error_exit;
}
if (wcslen(wide) != length) {
FORMAT_EXCEPTION(PyExc_ValueError, "embedded null character in %s");
goto error_exit;
}
path->wide = wide;
path->narrow = FALSE;
path->fd = -1;
#if !USE_UNICODE_WCHAR_CACHE
wide = NULL;
#endif /* USE_UNICODE_WCHAR_CACHE */
goto success_exit;
#else
if (!PyUnicode_FSConverter(o, &bytes)) {
goto error_exit;
}
#endif
}
else if (is_bytes) {
bytes = o;
Py_INCREF(bytes);
}
else if (is_buffer) {
/* XXX Replace PyObject_CheckBuffer with PyBytes_Check in other code
after removing support of non-bytes buffer objects. */
if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
"%s%s%s should be %s, not %.200s",
path->function_name ? path->function_name : "",
path->function_name ? ": " : "",
path->argument_name ? path->argument_name : "path",
path->allow_fd && path->nullable ? "string, bytes, os.PathLike, "
"integer or None" :
path->allow_fd ? "string, bytes, os.PathLike or integer" :
path->nullable ? "string, bytes, os.PathLike or None" :
"string, bytes or os.PathLike",
_PyType_Name(Py_TYPE(o)))) {
goto error_exit;
}
bytes = PyBytes_FromObject(o);
if (!bytes) {
goto error_exit;
}
}
else if (is_index) {
if (!_fd_converter(o, &path->fd)) {
goto error_exit;
}
path->wide = NULL;
#ifdef MS_WINDOWS
path->narrow = FALSE;
#else
path->narrow = NULL;
#endif
goto success_exit;
}
else {
error_format:
PyErr_Format(PyExc_TypeError, "%s%s%s should be %s, not %.200s",
path->function_name ? path->function_name : "",
path->function_name ? ": " : "",
path->argument_name ? path->argument_name : "path",
path->allow_fd && path->nullable ? "string, bytes, os.PathLike, "
"integer or None" :
path->allow_fd ? "string, bytes, os.PathLike or integer" :
path->nullable ? "string, bytes, os.PathLike or None" :
"string, bytes or os.PathLike",
_PyType_Name(Py_TYPE(o)));
goto error_exit;
}
length = PyBytes_GET_SIZE(bytes);
narrow = PyBytes_AS_STRING(bytes);
if ((size_t)length != strlen(narrow)) {
FORMAT_EXCEPTION(PyExc_ValueError, "embedded null character in %s");
goto error_exit;
}
#ifdef MS_WINDOWS
wo = PyUnicode_DecodeFSDefaultAndSize(
narrow,
length
);
if (!wo) {
goto error_exit;
}
#if USE_UNICODE_WCHAR_CACHE
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
wide = PyUnicode_AsUnicodeAndSize(wo, &length);
_Py_COMP_DIAG_POP
#else /* USE_UNICODE_WCHAR_CACHE */
wide = PyUnicode_AsWideCharString(wo, &length);
Py_DECREF(wo);
#endif /* USE_UNICODE_WCHAR_CACHE */
if (!wide) {
goto error_exit;
}
if (length > 32767) {
FORMAT_EXCEPTION(PyExc_ValueError, "%s too long for Windows");
goto error_exit;
}
if (wcslen(wide) != length) {
FORMAT_EXCEPTION(PyExc_ValueError, "embedded null character in %s");
goto error_exit;
}
path->wide = wide;
path->narrow = TRUE;
Py_DECREF(bytes);
#if USE_UNICODE_WCHAR_CACHE
path->cleanup = wo;
#else /* USE_UNICODE_WCHAR_CACHE */
wide = NULL;
#endif /* USE_UNICODE_WCHAR_CACHE */
#else
path->wide = NULL;
path->narrow = narrow;
if (bytes == o) {
/* Still a reference owned by path->object, don't have to
worry about path->narrow is used after free. */
Py_DECREF(bytes);
}
else {
path->cleanup = bytes;
}
#endif
path->fd = -1;
success_exit:
path->length = length;
path->object = o;
return Py_CLEANUP_SUPPORTED;
error_exit:
Py_XDECREF(o);
Py_XDECREF(bytes);
#ifdef MS_WINDOWS
#if USE_UNICODE_WCHAR_CACHE
Py_XDECREF(wo);
#else /* USE_UNICODE_WCHAR_CACHE */
PyMem_Free(wide);
#endif /* USE_UNICODE_WCHAR_CACHE */
#endif
return 0;
}
static void
argument_unavailable_error(const char *function_name, const char *argument_name)
{
PyErr_Format(PyExc_NotImplementedError,
"%s%s%s unavailable on this platform",
(function_name != NULL) ? function_name : "",
(function_name != NULL) ? ": ": "",
argument_name);
}
static int
dir_fd_unavailable(PyObject *o, void *p)
{
int dir_fd;
if (!dir_fd_converter(o, &dir_fd))
return 0;
if (dir_fd != DEFAULT_DIR_FD) {
argument_unavailable_error(NULL, "dir_fd");
return 0;
}
*(int *)p = dir_fd;
return 1;
}
static int
fd_specified(const char *function_name, int fd)
{
if (fd == -1)
return 0;
argument_unavailable_error(function_name, "fd");
return 1;
}
static int
follow_symlinks_specified(const char *function_name, int follow_symlinks)
{
if (follow_symlinks)
return 0;
argument_unavailable_error(function_name, "follow_symlinks");
return 1;
}
static int
path_and_dir_fd_invalid(const char *function_name, path_t *path, int dir_fd)
{
if (!path->wide && (dir_fd != DEFAULT_DIR_FD)
#ifndef MS_WINDOWS
&& !path->narrow
#endif
) {
PyErr_Format(PyExc_ValueError,
"%s: can't specify dir_fd without matching path",
function_name);
return 1;
}
return 0;
}
static int
dir_fd_and_fd_invalid(const char *function_name, int dir_fd, int fd)
{
if ((dir_fd != DEFAULT_DIR_FD) && (fd != -1)) {
PyErr_Format(PyExc_ValueError,
"%s: can't specify both dir_fd and fd",
function_name);
return 1;
}
return 0;
}
static int
fd_and_follow_symlinks_invalid(const char *function_name, int fd,
int follow_symlinks)
{
if ((fd > 0) && (!follow_symlinks)) {
PyErr_Format(PyExc_ValueError,
"%s: cannot use fd and follow_symlinks together",
function_name);
return 1;
}
return 0;
}
static int
dir_fd_and_follow_symlinks_invalid(const char *function_name, int dir_fd,
int follow_symlinks)
{
if ((dir_fd != DEFAULT_DIR_FD) && (!follow_symlinks)) {
PyErr_Format(PyExc_ValueError,
"%s: cannot use dir_fd and follow_symlinks together",
function_name);
return 1;
}
return 0;
}
#ifdef MS_WINDOWS
typedef long long Py_off_t;
#else
typedef off_t Py_off_t;
#endif
static int
Py_off_t_converter(PyObject *arg, void *addr)
{
#ifdef HAVE_LARGEFILE_SUPPORT
*((Py_off_t *)addr) = PyLong_AsLongLong(arg);
#else
*((Py_off_t *)addr) = PyLong_AsLong(arg);
#endif
if (PyErr_Occurred())
return 0;
return 1;
}
static PyObject *
PyLong_FromPy_off_t(Py_off_t offset)
{
#ifdef HAVE_LARGEFILE_SUPPORT
return PyLong_FromLongLong(offset);
#else
return PyLong_FromLong(offset);
#endif
}
#ifdef HAVE_SIGSET_T
/* Convert an iterable of integers to a sigset.
Return 1 on success, return 0 and raise an exception on error. */
int
_Py_Sigset_Converter(PyObject *obj, void *addr)
{
sigset_t *mask = (sigset_t *)addr;
PyObject *iterator, *item;
long signum;
int overflow;
// The extra parens suppress the unreachable-code warning with clang on MacOS
if (sigemptyset(mask) < (0)) {
/* Probably only if mask == NULL. */
PyErr_SetFromErrno(PyExc_OSError);
return 0;
}
iterator = PyObject_GetIter(obj);
if (iterator == NULL) {
return 0;
}
while ((item = PyIter_Next(iterator)) != NULL) {
signum = PyLong_AsLongAndOverflow(item, &overflow);
Py_DECREF(item);
if (signum <= 0 || signum >= Py_NSIG) {
if (overflow || signum != -1 || !PyErr_Occurred()) {
PyErr_Format(PyExc_ValueError,
"signal number %ld out of range [1; %i]",
signum, Py_NSIG - 1);
}
goto error;
}
if (sigaddset(mask, (int)signum)) {
if (errno != EINVAL) {
/* Probably impossible */
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
/* For backwards compatibility, allow idioms such as
* `range(1, NSIG)` but warn about invalid signal numbers
*/
const char msg[] =
"invalid signal number %ld, please use valid_signals()";
if (PyErr_WarnFormat(PyExc_RuntimeWarning, 1, msg, signum)) {
goto error;
}
}
}
if (!PyErr_Occurred()) {
Py_DECREF(iterator);
return 1;
}
error:
Py_DECREF(iterator);
return 0;
}
#endif /* HAVE_SIGSET_T */
#ifdef MS_WINDOWS
static int
win32_get_reparse_tag(HANDLE reparse_point_handle, ULONG *reparse_tag)
{
char target_buffer[_Py_MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
_Py_REPARSE_DATA_BUFFER *rdb = (_Py_REPARSE_DATA_BUFFER *)target_buffer;
DWORD n_bytes_returned;
if (0 == DeviceIoControl(
reparse_point_handle,
FSCTL_GET_REPARSE_POINT,
NULL, 0, /* in buffer */
target_buffer, sizeof(target_buffer),
&n_bytes_returned,
NULL)) /* we're not using OVERLAPPED_IO */
return FALSE;
if (reparse_tag)
*reparse_tag = rdb->ReparseTag;
return TRUE;
}
#endif /* MS_WINDOWS */
/* Return a dictionary corresponding to the POSIX environment table */
#if defined(WITH_NEXT_FRAMEWORK) || (defined(__APPLE__) && defined(Py_ENABLE_SHARED))
/* On Darwin/MacOSX a shared library or framework has no access to
** environ directly, we must obtain it with _NSGetEnviron(). See also
** man environ(7).
*/
#include <crt_externs.h>
#elif !defined(_MSC_VER) && (!defined(__WATCOMC__) || defined(__QNX__) || defined(__VXWORKS__))
extern char **environ;
#endif /* !_MSC_VER */
static PyObject *
convertenviron(void)
{
PyObject *d;
#ifdef MS_WINDOWS
wchar_t **e;
#else
char **e;
#endif
d = PyDict_New();
if (d == NULL)
return NULL;
#ifdef MS_WINDOWS
/* _wenviron must be initialized in this way if the program is started
through main() instead of wmain(). */
_wgetenv(L"");
e = _wenviron;
#elif defined(WITH_NEXT_FRAMEWORK) || (defined(__APPLE__) && defined(Py_ENABLE_SHARED))
/* environ is not accessible as an extern in a shared object on OSX; use
_NSGetEnviron to resolve it. The value changes if you add environment
variables between calls to Py_Initialize, so don't cache the value. */
e = *_NSGetEnviron();
#else
e = environ;
#endif
if (e == NULL)
return d;
for (; *e != NULL; e++) {
PyObject *k;
PyObject *v;
#ifdef MS_WINDOWS
const wchar_t *p = wcschr(*e, L'=');
#else
const char *p = strchr(*e, '=');
#endif
if (p == NULL)
continue;
#ifdef MS_WINDOWS
k = PyUnicode_FromWideChar(*e, (Py_ssize_t)(p-*e));
#else
k = PyBytes_FromStringAndSize(*e, (int)(p-*e));
#endif
if (k == NULL) {
Py_DECREF(d);
return NULL;
}
#ifdef MS_WINDOWS
v = PyUnicode_FromWideChar(p+1, wcslen(p+1));
#else
v = PyBytes_FromStringAndSize(p+1, strlen(p+1));
#endif
if (v == NULL) {
Py_DECREF(k);
Py_DECREF(d);
return NULL;
}
if (PyDict_SetDefault(d, k, v) == NULL) {
Py_DECREF(v);
Py_DECREF(k);
Py_DECREF(d);
return NULL;
}
Py_DECREF(k);
Py_DECREF(v);
}
return d;
}
/* Set a POSIX-specific error from errno, and return NULL */
static PyObject *
posix_error(void)
{
return PyErr_SetFromErrno(PyExc_OSError);
}
#ifdef MS_WINDOWS
static PyObject *
win32_error(const char* function, const char* filename)
{
/* XXX We should pass the function name along in the future.
(winreg.c also wants to pass the function name.)
This would however require an additional param to the
Windows error object, which is non-trivial.
*/
errno = GetLastError();
if (filename)
return PyErr_SetFromWindowsErrWithFilename(errno, filename);
else
return PyErr_SetFromWindowsErr(errno);
}
static PyObject *
win32_error_object_err(const char* function, PyObject* filename, DWORD err)
{
/* XXX - see win32_error for comments on 'function' */
if (filename)
return PyErr_SetExcFromWindowsErrWithFilenameObject(
PyExc_OSError,
err,
filename);
else
return PyErr_SetFromWindowsErr(err);
}
static PyObject *
win32_error_object(const char* function, PyObject* filename)
{
errno = GetLastError();
return win32_error_object_err(function, filename, errno);
}
#endif /* MS_WINDOWS */
static PyObject *
posix_path_object_error(PyObject *path)
{
return PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, path);
}
static PyObject *
path_object_error(PyObject *path)
{
#ifdef MS_WINDOWS
return PyErr_SetExcFromWindowsErrWithFilenameObject(
PyExc_OSError, 0, path);
#else
return posix_path_object_error(path);
#endif
}
static PyObject *
path_object_error2(PyObject *path, PyObject *path2)
{
#ifdef MS_WINDOWS
return PyErr_SetExcFromWindowsErrWithFilenameObjects(
PyExc_OSError, 0, path, path2);
#else
return PyErr_SetFromErrnoWithFilenameObjects(PyExc_OSError, path, path2);
#endif
}
static PyObject *
path_error(path_t *path)
{
return path_object_error(path->object);
}
static PyObject *
posix_path_error(path_t *path)
{
return posix_path_object_error(path->object);
}
static PyObject *
path_error2(path_t *path, path_t *path2)
{
return path_object_error2(path->object, path2->object);
}
/* POSIX generic methods */
static PyObject *
posix_fildes_fd(int fd, int (*func)(int))
{
int res;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
res = (*func)(fd);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (res != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res != 0)
return (!async_err) ? posix_error() : NULL;
Py_RETURN_NONE;
}
#ifdef MS_WINDOWS
/* This is a reimplementation of the C library's chdir function,
but one that produces Win32 errors instead of DOS error codes.
chdir is essentially a wrapper around SetCurrentDirectory; however,
it also needs to set "magic" environment variables indicating
the per-drive current directory, which are of the form =<drive>: */
static BOOL __stdcall
win32_wchdir(LPCWSTR path)
{
wchar_t path_buf[MAX_PATH], *new_path = path_buf;
int result;
wchar_t env[4] = L"=x:";
if(!SetCurrentDirectoryW(path))
return FALSE;
result = GetCurrentDirectoryW(Py_ARRAY_LENGTH(path_buf), new_path);
if (!result)
return FALSE;
if (result > Py_ARRAY_LENGTH(path_buf)) {
new_path = PyMem_RawMalloc(result * sizeof(wchar_t));
if (!new_path) {
SetLastError(ERROR_OUTOFMEMORY);
return FALSE;
}
result = GetCurrentDirectoryW(result, new_path);
if (!result) {
PyMem_RawFree(new_path);
return FALSE;
}
}
int is_unc_like_path = (wcsncmp(new_path, L"\\\\", 2) == 0 ||
wcsncmp(new_path, L"//", 2) == 0);
if (!is_unc_like_path) {
env[1] = new_path[0];
result = SetEnvironmentVariableW(env, new_path);
}
if (new_path != path_buf)
PyMem_RawFree(new_path);
return result ? TRUE : FALSE;
}
#endif
#ifdef MS_WINDOWS
/* The CRT of Windows has a number of flaws wrt. its stat() implementation:
- time stamps are restricted to second resolution
- file modification times suffer from forth-and-back conversions between
UTC and local time
Therefore, we implement our own stat, based on the Win32 API directly.
*/
#define HAVE_STAT_NSEC 1
#define HAVE_STRUCT_STAT_ST_FILE_ATTRIBUTES 1
#define HAVE_STRUCT_STAT_ST_REPARSE_TAG 1
static void
find_data_to_file_info(WIN32_FIND_DATAW *pFileData,
BY_HANDLE_FILE_INFORMATION *info,
ULONG *reparse_tag)
{
memset(info, 0, sizeof(*info));
info->dwFileAttributes = pFileData->dwFileAttributes;
info->ftCreationTime = pFileData->ftCreationTime;
info->ftLastAccessTime = pFileData->ftLastAccessTime;
info->ftLastWriteTime = pFileData->ftLastWriteTime;
info->nFileSizeHigh = pFileData->nFileSizeHigh;
info->nFileSizeLow = pFileData->nFileSizeLow;
/* info->nNumberOfLinks = 1; */
if (pFileData->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
*reparse_tag = pFileData->dwReserved0;
else
*reparse_tag = 0;
}
static BOOL
attributes_from_dir(LPCWSTR pszFile, BY_HANDLE_FILE_INFORMATION *info, ULONG *reparse_tag)
{
HANDLE hFindFile;
WIN32_FIND_DATAW FileData;
LPCWSTR filename = pszFile;
size_t n = wcslen(pszFile);
if (n && (pszFile[n - 1] == L'\\' || pszFile[n - 1] == L'/')) {
// cannot use PyMem_Malloc here because we do not hold the GIL
filename = (LPCWSTR)malloc((n + 1) * sizeof(filename[0]));
wcsncpy_s((LPWSTR)filename, n + 1, pszFile, n);
while (--n > 0 && (filename[n] == L'\\' || filename[n] == L'/')) {
((LPWSTR)filename)[n] = L'\0';
}
if (!n || (n == 1 && filename[1] == L':')) {
// Nothing left to query
free((void *)filename);
return FALSE;
}
}
hFindFile = FindFirstFileW(filename, &FileData);
if (pszFile != filename) {
free((void *)filename);
}
if (hFindFile == INVALID_HANDLE_VALUE) {
return FALSE;
}
FindClose(hFindFile);
find_data_to_file_info(&FileData, info, reparse_tag);
return TRUE;
}
static int
win32_xstat_impl(const wchar_t *path, struct _Py_stat_struct *result,
BOOL traverse)
{
HANDLE hFile;
BY_HANDLE_FILE_INFORMATION fileInfo;
FILE_ATTRIBUTE_TAG_INFO tagInfo = { 0 };
DWORD fileType, error;
BOOL isUnhandledTag = FALSE;
int retval = 0;
DWORD access = FILE_READ_ATTRIBUTES;
DWORD flags = FILE_FLAG_BACKUP_SEMANTICS; /* Allow opening directories. */
if (!traverse) {
flags |= FILE_FLAG_OPEN_REPARSE_POINT;
}
hFile = CreateFileW(path, access, 0, NULL, OPEN_EXISTING, flags, NULL);
if (hFile == INVALID_HANDLE_VALUE) {
/* Either the path doesn't exist, or the caller lacks access. */
error = GetLastError();
switch (error) {
case ERROR_ACCESS_DENIED: /* Cannot sync or read attributes. */
case ERROR_SHARING_VIOLATION: /* It's a paging file. */
/* Try reading the parent directory. */
if (!attributes_from_dir(path, &fileInfo, &tagInfo.ReparseTag)) {
/* Cannot read the parent directory. */
switch (GetLastError()) {
case ERROR_FILE_NOT_FOUND: /* File cannot be found */
case ERROR_PATH_NOT_FOUND: /* File parent directory cannot be found */
case ERROR_NOT_READY: /* Drive exists but unavailable */
case ERROR_BAD_NET_NAME: /* Remote drive unavailable */
break;
/* Restore the error from CreateFileW(). */
default:
SetLastError(error);
}
return -1;
}
if (fileInfo.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
if (traverse ||
!IsReparseTagNameSurrogate(tagInfo.ReparseTag)) {
/* The stat call has to traverse but cannot, so fail. */
SetLastError(error);
return -1;
}
}
break;
case ERROR_INVALID_PARAMETER:
/* \\.\con requires read or write access. */
hFile = CreateFileW(path, access | GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, flags, NULL);
if (hFile == INVALID_HANDLE_VALUE) {
SetLastError(error);
return -1;
}
break;
case ERROR_CANT_ACCESS_FILE:
/* bpo37834: open unhandled reparse points if traverse fails. */
if (traverse) {
traverse = FALSE;
isUnhandledTag = TRUE;
hFile = CreateFileW(path, access, 0, NULL, OPEN_EXISTING,
flags | FILE_FLAG_OPEN_REPARSE_POINT, NULL);
}
if (hFile == INVALID_HANDLE_VALUE) {
SetLastError(error);
return -1;
}
break;
default:
return -1;
}
}
if (hFile != INVALID_HANDLE_VALUE) {
/* Handle types other than files on disk. */
fileType = GetFileType(hFile);
if (fileType != FILE_TYPE_DISK) {
if (fileType == FILE_TYPE_UNKNOWN && GetLastError() != 0) {
retval = -1;
goto cleanup;
}
DWORD fileAttributes = GetFileAttributesW(path);
memset(result, 0, sizeof(*result));
if (fileAttributes != INVALID_FILE_ATTRIBUTES &&
fileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
/* \\.\pipe\ or \\.\mailslot\ */
result->st_mode = _S_IFDIR;
} else if (fileType == FILE_TYPE_CHAR) {
/* \\.\nul */
result->st_mode = _S_IFCHR;
} else if (fileType == FILE_TYPE_PIPE) {
/* \\.\pipe\spam */
result->st_mode = _S_IFIFO;
}
/* FILE_TYPE_UNKNOWN, e.g. \\.\mailslot\waitfor.exe\spam */
goto cleanup;
}
/* Query the reparse tag, and traverse a non-link. */
if (!traverse) {
if (!GetFileInformationByHandleEx(hFile, FileAttributeTagInfo,
&tagInfo, sizeof(tagInfo))) {
/* Allow devices that do not support FileAttributeTagInfo. */
switch (GetLastError()) {
case ERROR_INVALID_PARAMETER:
case ERROR_INVALID_FUNCTION:
case ERROR_NOT_SUPPORTED:
tagInfo.FileAttributes = FILE_ATTRIBUTE_NORMAL;
tagInfo.ReparseTag = 0;
break;
default:
retval = -1;
goto cleanup;
}
} else if (tagInfo.FileAttributes &
FILE_ATTRIBUTE_REPARSE_POINT) {
if (IsReparseTagNameSurrogate(tagInfo.ReparseTag)) {
if (isUnhandledTag) {
/* Traversing previously failed for either this link
or its target. */
SetLastError(ERROR_CANT_ACCESS_FILE);
retval = -1;
goto cleanup;
}
/* Traverse a non-link, but not if traversing already failed
for an unhandled tag. */
} else if (!isUnhandledTag) {
CloseHandle(hFile);
return win32_xstat_impl(path, result, TRUE);
}
}
}
if (!GetFileInformationByHandle(hFile, &fileInfo)) {
switch (GetLastError()) {
case ERROR_INVALID_PARAMETER:
case ERROR_INVALID_FUNCTION:
case ERROR_NOT_SUPPORTED:
/* Volumes and physical disks are block devices, e.g.
\\.\C: and \\.\PhysicalDrive0. */
memset(result, 0, sizeof(*result));
result->st_mode = 0x6000; /* S_IFBLK */
goto cleanup;
}
retval = -1;
goto cleanup;
}
}
_Py_attribute_data_to_stat(&fileInfo, tagInfo.ReparseTag, result);
if (!(fileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
/* Fix the file execute permissions. This hack sets S_IEXEC if
the filename has an extension that is commonly used by files
that CreateProcessW can execute. A real implementation calls
GetSecurityInfo, OpenThreadToken/OpenProcessToken, and
AccessCheck to check for generic read, write, and execute
access. */
const wchar_t *fileExtension = wcsrchr(path, '.');
if (fileExtension) {
if (_wcsicmp(fileExtension, L".exe") == 0 ||
_wcsicmp(fileExtension, L".bat") == 0 ||
_wcsicmp(fileExtension, L".cmd") == 0 ||
_wcsicmp(fileExtension, L".com") == 0) {
result->st_mode |= 0111;
}
}
}
cleanup:
if (hFile != INVALID_HANDLE_VALUE) {
/* Preserve last error if we are failing */
error = retval ? GetLastError() : 0;
if (!CloseHandle(hFile)) {
retval = -1;
} else if (retval) {
/* Restore last error */
SetLastError(error);
}
}
return retval;
}
static int
win32_xstat(const wchar_t *path, struct _Py_stat_struct *result, BOOL traverse)
{
/* Protocol violation: we explicitly clear errno, instead of
setting it to a POSIX error. Callers should use GetLastError. */
int code = win32_xstat_impl(path, result, traverse);
errno = 0;
return code;
}
/* About the following functions: win32_lstat_w, win32_stat, win32_stat_w
In Posix, stat automatically traverses symlinks and returns the stat
structure for the target. In Windows, the equivalent GetFileAttributes by
default does not traverse symlinks and instead returns attributes for
the symlink.
Instead, we will open the file (which *does* traverse symlinks by default)
and GetFileInformationByHandle(). */
static int
win32_lstat(const wchar_t* path, struct _Py_stat_struct *result)
{
return win32_xstat(path, result, FALSE);
}
static int
win32_stat(const wchar_t* path, struct _Py_stat_struct *result)
{
return win32_xstat(path, result, TRUE);
}
#endif /* MS_WINDOWS */
PyDoc_STRVAR(stat_result__doc__,
"stat_result: Result from stat, fstat, or lstat.\n\n\
This object may be accessed either as a tuple of\n\
(mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime)\n\
or via the attributes st_mode, st_ino, st_dev, st_nlink, st_uid, and so on.\n\
\n\
Posix/windows: If your platform supports st_blksize, st_blocks, st_rdev,\n\
or st_flags, they are available as attributes only.\n\
\n\
See os.stat for more information.");
static PyStructSequence_Field stat_result_fields[] = {
{"st_mode", "protection bits"},
{"st_ino", "inode"},
{"st_dev", "device"},
{"st_nlink", "number of hard links"},
{"st_uid", "user ID of owner"},
{"st_gid", "group ID of owner"},
{"st_size", "total size, in bytes"},
/* The NULL is replaced with PyStructSequence_UnnamedField later. */
{NULL, "integer time of last access"},
{NULL, "integer time of last modification"},
{NULL, "integer time of last change"},
{"st_atime", "time of last access"},
{"st_mtime", "time of last modification"},
{"st_ctime", "time of last change"},
{"st_atime_ns", "time of last access in nanoseconds"},
{"st_mtime_ns", "time of last modification in nanoseconds"},
{"st_ctime_ns", "time of last change in nanoseconds"},
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
{"st_blksize", "blocksize for filesystem I/O"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
{"st_blocks", "number of blocks allocated"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
{"st_rdev", "device type (if inode device)"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
{"st_flags", "user defined flags for file"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_GEN
{"st_gen", "generation number"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
{"st_birthtime", "time of creation"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_FILE_ATTRIBUTES
{"st_file_attributes", "Windows file attribute bits"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_FSTYPE
{"st_fstype", "Type of filesystem"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_REPARSE_TAG
{"st_reparse_tag", "Windows reparse tag"},
#endif
{0}
};
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
#define ST_BLKSIZE_IDX 16
#else
#define ST_BLKSIZE_IDX 15
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
#define ST_BLOCKS_IDX (ST_BLKSIZE_IDX+1)
#else
#define ST_BLOCKS_IDX ST_BLKSIZE_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
#define ST_RDEV_IDX (ST_BLOCKS_IDX+1)
#else
#define ST_RDEV_IDX ST_BLOCKS_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
#define ST_FLAGS_IDX (ST_RDEV_IDX+1)
#else
#define ST_FLAGS_IDX ST_RDEV_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_GEN
#define ST_GEN_IDX (ST_FLAGS_IDX+1)
#else
#define ST_GEN_IDX ST_FLAGS_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
#define ST_BIRTHTIME_IDX (ST_GEN_IDX+1)
#else
#define ST_BIRTHTIME_IDX ST_GEN_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_FILE_ATTRIBUTES
#define ST_FILE_ATTRIBUTES_IDX (ST_BIRTHTIME_IDX+1)
#else
#define ST_FILE_ATTRIBUTES_IDX ST_BIRTHTIME_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_FSTYPE
#define ST_FSTYPE_IDX (ST_FILE_ATTRIBUTES_IDX+1)
#else
#define ST_FSTYPE_IDX ST_FILE_ATTRIBUTES_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_REPARSE_TAG
#define ST_REPARSE_TAG_IDX (ST_FSTYPE_IDX+1)
#else
#define ST_REPARSE_TAG_IDX ST_FSTYPE_IDX
#endif
static PyStructSequence_Desc stat_result_desc = {
"stat_result", /* name */
stat_result__doc__, /* doc */
stat_result_fields,
10
};
PyDoc_STRVAR(statvfs_result__doc__,
"statvfs_result: Result from statvfs or fstatvfs.\n\n\
This object may be accessed either as a tuple of\n\
(bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flag, namemax),\n\
or via the attributes f_bsize, f_frsize, f_blocks, f_bfree, and so on.\n\
\n\
See os.statvfs for more information.");
static PyStructSequence_Field statvfs_result_fields[] = {
{"f_bsize", },
{"f_frsize", },
{"f_blocks", },
{"f_bfree", },
{"f_bavail", },
{"f_files", },
{"f_ffree", },
{"f_favail", },
{"f_flag", },
{"f_namemax",},
{"f_fsid", },
{0}
};
static PyStructSequence_Desc statvfs_result_desc = {
"statvfs_result", /* name */
statvfs_result__doc__, /* doc */
statvfs_result_fields,
10
};
#if defined(HAVE_WAITID) && !defined(__APPLE__)
PyDoc_STRVAR(waitid_result__doc__,
"waitid_result: Result from waitid.\n\n\
This object may be accessed either as a tuple of\n\
(si_pid, si_uid, si_signo, si_status, si_code),\n\
or via the attributes si_pid, si_uid, and so on.\n\
\n\
See os.waitid for more information.");
static PyStructSequence_Field waitid_result_fields[] = {
{"si_pid", },
{"si_uid", },
{"si_signo", },
{"si_status", },
{"si_code", },
{0}
};
static PyStructSequence_Desc waitid_result_desc = {
"waitid_result", /* name */
waitid_result__doc__, /* doc */
waitid_result_fields,
5
};
#endif
static newfunc structseq_new;
static PyObject *
statresult_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyStructSequence *result;
int i;
result = (PyStructSequence*)structseq_new(type, args, kwds);
if (!result)
return NULL;
/* If we have been initialized from a tuple,
st_?time might be set to None. Initialize it
from the int slots. */
for (i = 7; i <= 9; i++) {
if (result->ob_item[i+3] == Py_None) {
Py_DECREF(Py_None);
Py_INCREF(result->ob_item[i]);
result->ob_item[i+3] = result->ob_item[i];
}
}
return (PyObject*)result;
}
static int
_posix_clear(PyObject *module)
{
_posixstate *state = get_posix_state(module);
Py_CLEAR(state->billion);
Py_CLEAR(state->DirEntryType);
Py_CLEAR(state->ScandirIteratorType);
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
Py_CLEAR(state->SchedParamType);
#endif
Py_CLEAR(state->StatResultType);
Py_CLEAR(state->StatVFSResultType);
Py_CLEAR(state->TerminalSizeType);
Py_CLEAR(state->TimesResultType);
Py_CLEAR(state->UnameResultType);
#if defined(HAVE_WAITID) && !defined(__APPLE__)
Py_CLEAR(state->WaitidResultType);
#endif
#if defined(HAVE_WAIT3) || defined(HAVE_WAIT4)
Py_CLEAR(state->struct_rusage);
#endif
Py_CLEAR(state->st_mode);
return 0;
}
static int
_posix_traverse(PyObject *module, visitproc visit, void *arg)
{
_posixstate *state = get_posix_state(module);
Py_VISIT(state->billion);
Py_VISIT(state->DirEntryType);
Py_VISIT(state->ScandirIteratorType);
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
Py_VISIT(state->SchedParamType);
#endif
Py_VISIT(state->StatResultType);
Py_VISIT(state->StatVFSResultType);
Py_VISIT(state->TerminalSizeType);
Py_VISIT(state->TimesResultType);
Py_VISIT(state->UnameResultType);
#if defined(HAVE_WAITID) && !defined(__APPLE__)
Py_VISIT(state->WaitidResultType);
#endif
#if defined(HAVE_WAIT3) || defined(HAVE_WAIT4)
Py_VISIT(state->struct_rusage);
#endif
Py_VISIT(state->st_mode);
return 0;
}
static void
_posix_free(void *module)
{
_posix_clear((PyObject *)module);
}
static void
fill_time(PyObject *module, PyObject *v, int index, time_t sec, unsigned long nsec)
{
PyObject *s = _PyLong_FromTime_t(sec);
PyObject *ns_fractional = PyLong_FromUnsignedLong(nsec);
PyObject *s_in_ns = NULL;
PyObject *ns_total = NULL;
PyObject *float_s = NULL;
if (!(s && ns_fractional))
goto exit;
s_in_ns = PyNumber_Multiply(s, get_posix_state(module)->billion);
if (!s_in_ns)
goto exit;
ns_total = PyNumber_Add(s_in_ns, ns_fractional);
if (!ns_total)
goto exit;
float_s = PyFloat_FromDouble(sec + 1e-9*nsec);
if (!float_s) {
goto exit;
}
PyStructSequence_SET_ITEM(v, index, s);
PyStructSequence_SET_ITEM(v, index+3, float_s);
PyStructSequence_SET_ITEM(v, index+6, ns_total);
s = NULL;
float_s = NULL;
ns_total = NULL;
exit:
Py_XDECREF(s);
Py_XDECREF(ns_fractional);
Py_XDECREF(s_in_ns);
Py_XDECREF(ns_total);
Py_XDECREF(float_s);
}
/* pack a system stat C structure into the Python stat tuple
(used by posix_stat() and posix_fstat()) */
static PyObject*
_pystat_fromstructstat(PyObject *module, STRUCT_STAT *st)
{
unsigned long ansec, mnsec, cnsec;
PyObject *StatResultType = get_posix_state(module)->StatResultType;
PyObject *v = PyStructSequence_New((PyTypeObject *)StatResultType);
if (v == NULL)
return NULL;
PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long)st->st_mode));
static_assert(sizeof(unsigned long long) >= sizeof(st->st_ino),
"stat.st_ino is larger than unsigned long long");
PyStructSequence_SET_ITEM(v, 1, PyLong_FromUnsignedLongLong(st->st_ino));
#ifdef MS_WINDOWS
PyStructSequence_SET_ITEM(v, 2, PyLong_FromUnsignedLong(st->st_dev));
#else
PyStructSequence_SET_ITEM(v, 2, _PyLong_FromDev(st->st_dev));
#endif
PyStructSequence_SET_ITEM(v, 3, PyLong_FromLong((long)st->st_nlink));
#if defined(MS_WINDOWS)
PyStructSequence_SET_ITEM(v, 4, PyLong_FromLong(0));
PyStructSequence_SET_ITEM(v, 5, PyLong_FromLong(0));
#else
PyStructSequence_SET_ITEM(v, 4, _PyLong_FromUid(st->st_uid));
PyStructSequence_SET_ITEM(v, 5, _PyLong_FromGid(st->st_gid));
#endif
static_assert(sizeof(long long) >= sizeof(st->st_size),
"stat.st_size is larger than long long");
PyStructSequence_SET_ITEM(v, 6, PyLong_FromLongLong(st->st_size));
#if defined(HAVE_STAT_TV_NSEC)
ansec = st->st_atim.tv_nsec;
mnsec = st->st_mtim.tv_nsec;
cnsec = st->st_ctim.tv_nsec;
#elif defined(HAVE_STAT_TV_NSEC2)
ansec = st->st_atimespec.tv_nsec;
mnsec = st->st_mtimespec.tv_nsec;
cnsec = st->st_ctimespec.tv_nsec;
#elif defined(HAVE_STAT_NSEC)
ansec = st->st_atime_nsec;
mnsec = st->st_mtime_nsec;
cnsec = st->st_ctime_nsec;
#else
ansec = mnsec = cnsec = 0;
#endif
fill_time(module, v, 7, st->st_atime, ansec);
fill_time(module, v, 8, st->st_mtime, mnsec);
fill_time(module, v, 9, st->st_ctime, cnsec);
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
PyStructSequence_SET_ITEM(v, ST_BLKSIZE_IDX,
PyLong_FromLong((long)st->st_blksize));
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
PyStructSequence_SET_ITEM(v, ST_BLOCKS_IDX,
PyLong_FromLong((long)st->st_blocks));
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
PyStructSequence_SET_ITEM(v, ST_RDEV_IDX,
PyLong_FromLong((long)st->st_rdev));
#endif
#ifdef HAVE_STRUCT_STAT_ST_GEN
PyStructSequence_SET_ITEM(v, ST_GEN_IDX,
PyLong_FromLong((long)st->st_gen));
#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
{
PyObject *val;
unsigned long bsec,bnsec;
bsec = (long)st->st_birthtime;
#ifdef HAVE_STAT_TV_NSEC2
bnsec = st->st_birthtimespec.tv_nsec;
#else
bnsec = 0;
#endif
val = PyFloat_FromDouble(bsec + 1e-9*bnsec);
PyStructSequence_SET_ITEM(v, ST_BIRTHTIME_IDX,
val);
}
#endif
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
PyStructSequence_SET_ITEM(v, ST_FLAGS_IDX,
PyLong_FromLong((long)st->st_flags));
#endif
#ifdef HAVE_STRUCT_STAT_ST_FILE_ATTRIBUTES
PyStructSequence_SET_ITEM(v, ST_FILE_ATTRIBUTES_IDX,
PyLong_FromUnsignedLong(st->st_file_attributes));
#endif
#ifdef HAVE_STRUCT_STAT_ST_FSTYPE
PyStructSequence_SET_ITEM(v, ST_FSTYPE_IDX,
PyUnicode_FromString(st->st_fstype));
#endif
#ifdef HAVE_STRUCT_STAT_ST_REPARSE_TAG
PyStructSequence_SET_ITEM(v, ST_REPARSE_TAG_IDX,
PyLong_FromUnsignedLong(st->st_reparse_tag));
#endif
if (PyErr_Occurred()) {
Py_DECREF(v);
return NULL;
}
return v;
}
/* POSIX methods */
static PyObject *
posix_do_stat(PyObject *module, const char *function_name, path_t *path,
int dir_fd, int follow_symlinks)
{
STRUCT_STAT st;
int result;
#ifdef HAVE_FSTATAT
int fstatat_unavailable = 0;
#endif
#if !defined(MS_WINDOWS) && !defined(HAVE_FSTATAT) && !defined(HAVE_LSTAT)
if (follow_symlinks_specified(function_name, follow_symlinks))
return NULL;
#endif
if (path_and_dir_fd_invalid("stat", path, dir_fd) ||
dir_fd_and_fd_invalid("stat", dir_fd, path->fd) ||
fd_and_follow_symlinks_invalid("stat", path->fd, follow_symlinks))
return NULL;
Py_BEGIN_ALLOW_THREADS
if (path->fd != -1)
result = FSTAT(path->fd, &st);
#ifdef MS_WINDOWS
else if (follow_symlinks)
result = win32_stat(path->wide, &st);
else
result = win32_lstat(path->wide, &st);
#else
else
#if defined(HAVE_LSTAT)
if ((!follow_symlinks) && (dir_fd == DEFAULT_DIR_FD))
result = LSTAT(path->narrow, &st);
else
#endif /* HAVE_LSTAT */
#ifdef HAVE_FSTATAT
if ((dir_fd != DEFAULT_DIR_FD) || !follow_symlinks) {
if (HAVE_FSTATAT_RUNTIME) {
result = fstatat(dir_fd, path->narrow, &st,
follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW);
} else {
fstatat_unavailable = 1;
}
} else
#endif /* HAVE_FSTATAT */
result = STAT(path->narrow, &st);
#endif /* MS_WINDOWS */
Py_END_ALLOW_THREADS
#ifdef HAVE_FSTATAT
if (fstatat_unavailable) {
argument_unavailable_error("stat", "dir_fd");
return NULL;
}
#endif
if (result != 0) {
return path_error(path);
}
return _pystat_fromstructstat(module, &st);
}
/*[python input]
for s in """
FACCESSAT
FCHMODAT
FCHOWNAT
FSTATAT
LINKAT
MKDIRAT
MKFIFOAT
MKNODAT
OPENAT
READLINKAT
SYMLINKAT
UNLINKAT
""".strip().split():
s = s.strip()
print("""
#ifdef HAVE_{s}
#define {s}_DIR_FD_CONVERTER dir_fd_converter
#else
#define {s}_DIR_FD_CONVERTER dir_fd_unavailable
#endif
""".rstrip().format(s=s))
for s in """
FCHDIR
FCHMOD
FCHOWN
FDOPENDIR
FEXECVE
FPATHCONF
FSTATVFS
FTRUNCATE
""".strip().split():
s = s.strip()
print("""
#ifdef HAVE_{s}
#define PATH_HAVE_{s} 1
#else
#define PATH_HAVE_{s} 0
#endif
""".rstrip().format(s=s))
[python start generated code]*/
#ifdef HAVE_FACCESSAT
#define FACCESSAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define FACCESSAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_FCHMODAT
#define FCHMODAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define FCHMODAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_FCHOWNAT
#define FCHOWNAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define FCHOWNAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_FSTATAT
#define FSTATAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define FSTATAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_LINKAT
#define LINKAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define LINKAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_MKDIRAT
#define MKDIRAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define MKDIRAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_MKFIFOAT
#define MKFIFOAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define MKFIFOAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_MKNODAT
#define MKNODAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define MKNODAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_OPENAT
#define OPENAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define OPENAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_READLINKAT
#define READLINKAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define READLINKAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_SYMLINKAT
#define SYMLINKAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define SYMLINKAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_UNLINKAT
#define UNLINKAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define UNLINKAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#ifdef HAVE_FCHDIR
#define PATH_HAVE_FCHDIR 1
#else
#define PATH_HAVE_FCHDIR 0
#endif
#ifdef HAVE_FCHMOD
#define PATH_HAVE_FCHMOD 1
#else
#define PATH_HAVE_FCHMOD 0
#endif
#ifdef HAVE_FCHOWN
#define PATH_HAVE_FCHOWN 1
#else
#define PATH_HAVE_FCHOWN 0
#endif
#ifdef HAVE_FDOPENDIR
#define PATH_HAVE_FDOPENDIR 1
#else
#define PATH_HAVE_FDOPENDIR 0
#endif
#ifdef HAVE_FEXECVE
#define PATH_HAVE_FEXECVE 1
#else
#define PATH_HAVE_FEXECVE 0
#endif
#ifdef HAVE_FPATHCONF
#define PATH_HAVE_FPATHCONF 1
#else
#define PATH_HAVE_FPATHCONF 0
#endif
#ifdef HAVE_FSTATVFS
#define PATH_HAVE_FSTATVFS 1
#else
#define PATH_HAVE_FSTATVFS 0
#endif
#ifdef HAVE_FTRUNCATE
#define PATH_HAVE_FTRUNCATE 1
#else
#define PATH_HAVE_FTRUNCATE 0
#endif
/*[python end generated code: output=4bd4f6f7d41267f1 input=80b4c890b6774ea5]*/
#ifdef MS_WINDOWS
#undef PATH_HAVE_FTRUNCATE
#define PATH_HAVE_FTRUNCATE 1
#endif
/*[python input]
class path_t_converter(CConverter):
type = "path_t"
impl_by_reference = True
parse_by_reference = True
converter = 'path_converter'
def converter_init(self, *, allow_fd=False, nullable=False):
# right now path_t doesn't support default values.
# to support a default value, you'll need to override initialize().
if self.default not in (unspecified, None):
fail("Can't specify a default to the path_t converter!")
if self.c_default not in (None, 'Py_None'):
raise RuntimeError("Can't specify a c_default to the path_t converter!")
self.nullable = nullable
self.allow_fd = allow_fd
def pre_render(self):
def strify(value):
if isinstance(value, str):
return value
return str(int(bool(value)))
# add self.py_name here when merging with posixmodule conversion
self.c_default = 'PATH_T_INITIALIZE("{}", "{}", {}, {})'.format(
self.function.name,
self.name,
strify(self.nullable),
strify(self.allow_fd),
)
def cleanup(self):
return "path_cleanup(&" + self.name + ");\n"
class dir_fd_converter(CConverter):
type = 'int'
def converter_init(self, requires=None):
if self.default in (unspecified, None):
self.c_default = 'DEFAULT_DIR_FD'
if isinstance(requires, str):
self.converter = requires.upper() + '_DIR_FD_CONVERTER'
else:
self.converter = 'dir_fd_converter'
class uid_t_converter(CConverter):
type = "uid_t"
converter = '_Py_Uid_Converter'
class gid_t_converter(CConverter):
type = "gid_t"
converter = '_Py_Gid_Converter'
class dev_t_converter(CConverter):
type = 'dev_t'
converter = '_Py_Dev_Converter'
class dev_t_return_converter(unsigned_long_return_converter):
type = 'dev_t'
conversion_fn = '_PyLong_FromDev'
unsigned_cast = '(dev_t)'
class FSConverter_converter(CConverter):
type = 'PyObject *'
converter = 'PyUnicode_FSConverter'
def converter_init(self):
if self.default is not unspecified:
fail("FSConverter_converter does not support default values")
self.c_default = 'NULL'
def cleanup(self):
return "Py_XDECREF(" + self.name + ");\n"
class pid_t_converter(CConverter):
type = 'pid_t'
format_unit = '" _Py_PARSE_PID "'
class idtype_t_converter(int_converter):
type = 'idtype_t'
class id_t_converter(CConverter):
type = 'id_t'
format_unit = '" _Py_PARSE_PID "'
class intptr_t_converter(CConverter):
type = 'intptr_t'
format_unit = '" _Py_PARSE_INTPTR "'
class Py_off_t_converter(CConverter):
type = 'Py_off_t'
converter = 'Py_off_t_converter'
class Py_off_t_return_converter(long_return_converter):
type = 'Py_off_t'
conversion_fn = 'PyLong_FromPy_off_t'
class path_confname_converter(CConverter):
type="int"
converter="conv_path_confname"
class confstr_confname_converter(path_confname_converter):
converter='conv_confstr_confname'
class sysconf_confname_converter(path_confname_converter):
converter="conv_sysconf_confname"
[python start generated code]*/
/*[python end generated code: output=da39a3ee5e6b4b0d input=3338733161aa7879]*/
/*[clinic input]
os.stat
path : path_t(allow_fd=True)
Path to be examined; can be string, bytes, a path-like object or
open-file-descriptor int.
*
dir_fd : dir_fd(requires='fstatat') = None
If not None, it should be a file descriptor open to a directory,
and path should be a relative string; path will then be relative to
that directory.
follow_symlinks: bool = True
If False, and the last element of the path is a symbolic link,
stat will examine the symbolic link itself instead of the file
the link points to.
Perform a stat system call on the given path.
dir_fd and follow_symlinks may not be implemented
on your platform. If they are unavailable, using them will raise a
NotImplementedError.
It's an error to use dir_fd or follow_symlinks when specifying path as
an open file descriptor.
[clinic start generated code]*/
static PyObject *
os_stat_impl(PyObject *module, path_t *path, int dir_fd, int follow_symlinks)
/*[clinic end generated code: output=7d4976e6f18a59c5 input=01d362ebcc06996b]*/
{
return posix_do_stat(module, "stat", path, dir_fd, follow_symlinks);
}
/*[clinic input]
os.lstat
path : path_t
*
dir_fd : dir_fd(requires='fstatat') = None
Perform a stat system call on the given path, without following symbolic links.
Like stat(), but do not follow symbolic links.
Equivalent to stat(path, follow_symlinks=False).
[clinic start generated code]*/
static PyObject *
os_lstat_impl(PyObject *module, path_t *path, int dir_fd)
/*[clinic end generated code: output=ef82a5d35ce8ab37 input=0b7474765927b925]*/
{
int follow_symlinks = 0;
return posix_do_stat(module, "lstat", path, dir_fd, follow_symlinks);
}
/*[clinic input]
os.access -> bool
path: path_t
Path to be tested; can be string, bytes, or a path-like object.
mode: int
Operating-system mode bitfield. Can be F_OK to test existence,
or the inclusive-OR of R_OK, W_OK, and X_OK.
*
dir_fd : dir_fd(requires='faccessat') = None
If not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that
directory.
effective_ids: bool = False
If True, access will use the effective uid/gid instead of
the real uid/gid.
follow_symlinks: bool = True
If False, and the last element of the path is a symbolic link,
access will examine the symbolic link itself instead of the file
the link points to.
Use the real uid/gid to test for access to a path.
{parameters}
dir_fd, effective_ids, and follow_symlinks may not be implemented
on your platform. If they are unavailable, using them will raise a
NotImplementedError.
Note that most operations will use the effective uid/gid, therefore this
routine can be used in a suid/sgid environment to test if the invoking user
has the specified access to the path.
[clinic start generated code]*/
static int
os_access_impl(PyObject *module, path_t *path, int mode, int dir_fd,
int effective_ids, int follow_symlinks)
/*[clinic end generated code: output=cf84158bc90b1a77 input=3ffe4e650ee3bf20]*/
{
int return_value;
#ifdef MS_WINDOWS
DWORD attr;
#else
int result;
#endif
#ifdef HAVE_FACCESSAT
int faccessat_unavailable = 0;
#endif
#ifndef HAVE_FACCESSAT
if (follow_symlinks_specified("access", follow_symlinks))
return -1;
if (effective_ids) {
argument_unavailable_error("access", "effective_ids");
return -1;
}
#endif
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
attr = GetFileAttributesW(path->wide);
Py_END_ALLOW_THREADS
/*
* Access is possible if
* * we didn't get a -1, and
* * write access wasn't requested,
* * or the file isn't read-only,
* * or it's a directory.
* (Directories cannot be read-only on Windows.)
*/
return_value = (attr != INVALID_FILE_ATTRIBUTES) &&
(!(mode & 2) ||
!(attr & FILE_ATTRIBUTE_READONLY) ||
(attr & FILE_ATTRIBUTE_DIRECTORY));
#else
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_FACCESSAT
if ((dir_fd != DEFAULT_DIR_FD) ||
effective_ids ||
!follow_symlinks) {
if (HAVE_FACCESSAT_RUNTIME) {
int flags = 0;
if (!follow_symlinks)
flags |= AT_SYMLINK_NOFOLLOW;
if (effective_ids)
flags |= AT_EACCESS;
result = faccessat(dir_fd, path->narrow, mode, flags);
} else {
faccessat_unavailable = 1;
}
}
else
#endif
result = access(path->narrow, mode);
Py_END_ALLOW_THREADS
#ifdef HAVE_FACCESSAT
if (faccessat_unavailable) {
if (dir_fd != DEFAULT_DIR_FD) {
argument_unavailable_error("access", "dir_fd");
return -1;
}
if (follow_symlinks_specified("access", follow_symlinks))
return -1;
if (effective_ids) {
argument_unavailable_error("access", "effective_ids");
return -1;
}
/* should be unreachable */
return -1;
}
#endif
return_value = !result;
#endif
return return_value;
}
#ifndef F_OK
#define F_OK 0
#endif
#ifndef R_OK
#define R_OK 4
#endif
#ifndef W_OK
#define W_OK 2
#endif
#ifndef X_OK
#define X_OK 1
#endif
#ifdef HAVE_TTYNAME
/*[clinic input]
os.ttyname
fd: int
Integer file descriptor handle.
/
Return the name of the terminal device connected to 'fd'.
[clinic start generated code]*/
static PyObject *
os_ttyname_impl(PyObject *module, int fd)
/*[clinic end generated code: output=c424d2e9d1cd636a input=9ff5a58b08115c55]*/
{
long size = sysconf(_SC_TTY_NAME_MAX);
if (size == -1) {
return posix_error();
}
char *buffer = (char *)PyMem_RawMalloc(size);
if (buffer == NULL) {
return PyErr_NoMemory();
}
int ret = ttyname_r(fd, buffer, size);
if (ret != 0) {
PyMem_RawFree(buffer);
errno = ret;
return posix_error();
}
PyObject *res = PyUnicode_DecodeFSDefault(buffer);
PyMem_RawFree(buffer);
return res;
}
#endif
#ifdef HAVE_CTERMID
/*[clinic input]
os.ctermid
Return the name of the controlling terminal for this process.
[clinic start generated code]*/
static PyObject *
os_ctermid_impl(PyObject *module)
/*[clinic end generated code: output=02f017e6c9e620db input=3b87fdd52556382d]*/
{
char *ret;
char buffer[L_ctermid];
#ifdef USE_CTERMID_R
ret = ctermid_r(buffer);
#else
ret = ctermid(buffer);
#endif
if (ret == NULL)
return posix_error();
return PyUnicode_DecodeFSDefault(buffer);
}
#endif /* HAVE_CTERMID */
/*[clinic input]
os.chdir
path: path_t(allow_fd='PATH_HAVE_FCHDIR')
Change the current working directory to the specified path.
path may always be specified as a string.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
[clinic start generated code]*/
static PyObject *
os_chdir_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=3be6400eee26eaae input=1a4a15b4d12cb15d]*/
{
int result;
if (PySys_Audit("os.chdir", "(O)", path->object) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
#ifdef MS_WINDOWS
/* on unix, success = 0, on windows, success = !0 */
result = !win32_wchdir(path->wide);
#else
#ifdef HAVE_FCHDIR
if (path->fd != -1)
result = fchdir(path->fd);
else
#endif
result = chdir(path->narrow);
#endif
Py_END_ALLOW_THREADS
if (result) {
return path_error(path);
}
Py_RETURN_NONE;
}
#ifdef HAVE_FCHDIR
/*[clinic input]
os.fchdir
fd: fildes
Change to the directory of the given file descriptor.
fd must be opened on a directory, not a file.
Equivalent to os.chdir(fd).
[clinic start generated code]*/
static PyObject *
os_fchdir_impl(PyObject *module, int fd)
/*[clinic end generated code: output=42e064ec4dc00ab0 input=18e816479a2fa985]*/
{
if (PySys_Audit("os.chdir", "(i)", fd) < 0) {
return NULL;
}
return posix_fildes_fd(fd, fchdir);
}
#endif /* HAVE_FCHDIR */
/*[clinic input]
os.chmod
path: path_t(allow_fd='PATH_HAVE_FCHMOD')
Path to be modified. May always be specified as a str, bytes, or a path-like object.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
mode: int
Operating-system mode bitfield.
*
dir_fd : dir_fd(requires='fchmodat') = None
If not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that
directory.
follow_symlinks: bool = True
If False, and the last element of the path is a symbolic link,
chmod will modify the symbolic link itself instead of the file
the link points to.
Change the access permissions of a file.
It is an error to use dir_fd or follow_symlinks when specifying path as
an open file descriptor.
dir_fd and follow_symlinks may not be implemented on your platform.
If they are unavailable, using them will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_chmod_impl(PyObject *module, path_t *path, int mode, int dir_fd,
int follow_symlinks)
/*[clinic end generated code: output=5cf6a94915cc7bff input=989081551c00293b]*/
{
int result;
#ifdef MS_WINDOWS
DWORD attr;
#endif
#ifdef HAVE_FCHMODAT
int fchmodat_nofollow_unsupported = 0;
int fchmodat_unsupported = 0;
#endif
#if !(defined(HAVE_FCHMODAT) || defined(HAVE_LCHMOD))
if (follow_symlinks_specified("chmod", follow_symlinks))
return NULL;
#endif
if (PySys_Audit("os.chmod", "Oii", path->object, mode,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
attr = GetFileAttributesW(path->wide);
if (attr == INVALID_FILE_ATTRIBUTES)
result = 0;
else {
if (mode & _S_IWRITE)
attr &= ~FILE_ATTRIBUTE_READONLY;
else
attr |= FILE_ATTRIBUTE_READONLY;
result = SetFileAttributesW(path->wide, attr);
}
Py_END_ALLOW_THREADS
if (!result) {
return path_error(path);
}
#else /* MS_WINDOWS */
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_FCHMOD
if (path->fd != -1)
result = fchmod(path->fd, mode);
else
#endif /* HAVE_CHMOD */
#ifdef HAVE_LCHMOD
if ((!follow_symlinks) && (dir_fd == DEFAULT_DIR_FD))
result = lchmod(path->narrow, mode);
else
#endif /* HAVE_LCHMOD */
#ifdef HAVE_FCHMODAT
if ((dir_fd != DEFAULT_DIR_FD) || !follow_symlinks) {
if (HAVE_FCHMODAT_RUNTIME) {
/*
* fchmodat() doesn't currently support AT_SYMLINK_NOFOLLOW!
* The documentation specifically shows how to use it,
* and then says it isn't implemented yet.
* (true on linux with glibc 2.15, and openindiana 3.x)
*
* Once it is supported, os.chmod will automatically
* support dir_fd and follow_symlinks=False. (Hopefully.)
* Until then, we need to be careful what exception we raise.
*/
result = fchmodat(dir_fd, path->narrow, mode,
follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW);
/*
* But wait! We can't throw the exception without allowing threads,
* and we can't do that in this nested scope. (Macro trickery, sigh.)
*/
fchmodat_nofollow_unsupported =
result &&
((errno == ENOTSUP) || (errno == EOPNOTSUPP)) &&
!follow_symlinks;
} else {
fchmodat_unsupported = 1;
fchmodat_nofollow_unsupported = 1;
result = -1;
}
}
else
#endif /* HAVE_FHCMODAT */
{
#ifdef HAVE_CHMOD
result = chmod(path->narrow, mode);
#elif defined(__wasi__)
// WASI SDK 15.0 does not support chmod.
// Ignore missing syscall for now.
result = 0;
#else
result = -1;
errno = ENOSYS;
#endif
}
Py_END_ALLOW_THREADS
if (result) {
#ifdef HAVE_FCHMODAT
if (fchmodat_unsupported) {
if (dir_fd != DEFAULT_DIR_FD) {
argument_unavailable_error("chmod", "dir_fd");
return NULL;
}
}
if (fchmodat_nofollow_unsupported) {
if (dir_fd != DEFAULT_DIR_FD)
dir_fd_and_follow_symlinks_invalid("chmod",
dir_fd, follow_symlinks);
else
follow_symlinks_specified("chmod", follow_symlinks);
return NULL;
}
else
#endif /* HAVE_FCHMODAT */
return path_error(path);
}
#endif /* MS_WINDOWS */
Py_RETURN_NONE;
}
#ifdef HAVE_FCHMOD
/*[clinic input]
os.fchmod
fd: int
mode: int
Change the access permissions of the file given by file descriptor fd.
Equivalent to os.chmod(fd, mode).
[clinic start generated code]*/
static PyObject *
os_fchmod_impl(PyObject *module, int fd, int mode)
/*[clinic end generated code: output=afd9bc05b4e426b3 input=8ab11975ca01ee5b]*/
{
int res;
int async_err = 0;
if (PySys_Audit("os.chmod", "iii", fd, mode, -1) < 0) {
return NULL;
}
do {
Py_BEGIN_ALLOW_THREADS
res = fchmod(fd, mode);
Py_END_ALLOW_THREADS
} while (res != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res != 0)
return (!async_err) ? posix_error() : NULL;
Py_RETURN_NONE;
}
#endif /* HAVE_FCHMOD */
#ifdef HAVE_LCHMOD
/*[clinic input]
os.lchmod
path: path_t
mode: int
Change the access permissions of a file, without following symbolic links.
If path is a symlink, this affects the link itself rather than the target.
Equivalent to chmod(path, mode, follow_symlinks=False)."
[clinic start generated code]*/
static PyObject *
os_lchmod_impl(PyObject *module, path_t *path, int mode)
/*[clinic end generated code: output=082344022b51a1d5 input=90c5663c7465d24f]*/
{
int res;
if (PySys_Audit("os.chmod", "Oii", path->object, mode, -1) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
res = lchmod(path->narrow, mode);
Py_END_ALLOW_THREADS
if (res < 0) {
path_error(path);
return NULL;
}
Py_RETURN_NONE;
}
#endif /* HAVE_LCHMOD */
#ifdef HAVE_CHFLAGS
/*[clinic input]
os.chflags
path: path_t
flags: unsigned_long(bitwise=True)
follow_symlinks: bool=True
Set file flags.
If follow_symlinks is False, and the last element of the path is a symbolic
link, chflags will change flags on the symbolic link itself instead of the
file the link points to.
follow_symlinks may not be implemented on your platform. If it is
unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_chflags_impl(PyObject *module, path_t *path, unsigned long flags,
int follow_symlinks)
/*[clinic end generated code: output=85571c6737661ce9 input=0327e29feb876236]*/
{
int result;
#ifndef HAVE_LCHFLAGS
if (follow_symlinks_specified("chflags", follow_symlinks))
return NULL;
#endif
if (PySys_Audit("os.chflags", "Ok", path->object, flags) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_LCHFLAGS
if (!follow_symlinks)
result = lchflags(path->narrow, flags);
else
#endif
result = chflags(path->narrow, flags);
Py_END_ALLOW_THREADS
if (result)
return path_error(path);
Py_RETURN_NONE;
}
#endif /* HAVE_CHFLAGS */
#ifdef HAVE_LCHFLAGS
/*[clinic input]
os.lchflags
path: path_t
flags: unsigned_long(bitwise=True)
Set file flags.
This function will not follow symbolic links.
Equivalent to chflags(path, flags, follow_symlinks=False).
[clinic start generated code]*/
static PyObject *
os_lchflags_impl(PyObject *module, path_t *path, unsigned long flags)
/*[clinic end generated code: output=30ae958695c07316 input=f9f82ea8b585ca9d]*/
{
int res;
if (PySys_Audit("os.chflags", "Ok", path->object, flags) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
res = lchflags(path->narrow, flags);
Py_END_ALLOW_THREADS
if (res < 0) {
return path_error(path);
}
Py_RETURN_NONE;
}
#endif /* HAVE_LCHFLAGS */
#ifdef HAVE_CHROOT
/*[clinic input]
os.chroot
path: path_t
Change root directory to path.
[clinic start generated code]*/
static PyObject *
os_chroot_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=de80befc763a4475 input=14822965652c3dc3]*/
{
int res;
Py_BEGIN_ALLOW_THREADS
res = chroot(path->narrow);
Py_END_ALLOW_THREADS
if (res < 0)
return path_error(path);
Py_RETURN_NONE;
}
#endif /* HAVE_CHROOT */
#ifdef HAVE_FSYNC
/*[clinic input]
os.fsync
fd: fildes
Force write of fd to disk.
[clinic start generated code]*/
static PyObject *
os_fsync_impl(PyObject *module, int fd)
/*[clinic end generated code: output=4a10d773f52b3584 input=21c3645c056967f2]*/
{
return posix_fildes_fd(fd, fsync);
}
#endif /* HAVE_FSYNC */
#ifdef HAVE_SYNC
/*[clinic input]
os.sync
Force write of everything to disk.
[clinic start generated code]*/
static PyObject *
os_sync_impl(PyObject *module)
/*[clinic end generated code: output=2796b1f0818cd71c input=84749fe5e9b404ff]*/
{
Py_BEGIN_ALLOW_THREADS
sync();
Py_END_ALLOW_THREADS
Py_RETURN_NONE;
}
#endif /* HAVE_SYNC */
#ifdef HAVE_FDATASYNC
#ifdef __hpux
extern int fdatasync(int); /* On HP-UX, in libc but not in unistd.h */
#endif
/*[clinic input]
os.fdatasync
fd: fildes
Force write of fd to disk without forcing update of metadata.
[clinic start generated code]*/
static PyObject *
os_fdatasync_impl(PyObject *module, int fd)
/*[clinic end generated code: output=b4b9698b5d7e26dd input=bc74791ee54dd291]*/
{
return posix_fildes_fd(fd, fdatasync);
}
#endif /* HAVE_FDATASYNC */
#ifdef HAVE_CHOWN
/*[clinic input]
os.chown
path : path_t(allow_fd='PATH_HAVE_FCHOWN')
Path to be examined; can be string, bytes, a path-like object, or open-file-descriptor int.
uid: uid_t
gid: gid_t
*
dir_fd : dir_fd(requires='fchownat') = None
If not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that
directory.
follow_symlinks: bool = True
If False, and the last element of the path is a symbolic link,
stat will examine the symbolic link itself instead of the file
the link points to.
Change the owner and group id of path to the numeric uid and gid.\
path may always be specified as a string.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
If follow_symlinks is False, and the last element of the path is a symbolic
link, chown will modify the symbolic link itself instead of the file the
link points to.
It is an error to use dir_fd or follow_symlinks when specifying path as
an open file descriptor.
dir_fd and follow_symlinks may not be implemented on your platform.
If they are unavailable, using them will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_chown_impl(PyObject *module, path_t *path, uid_t uid, gid_t gid,
int dir_fd, int follow_symlinks)
/*[clinic end generated code: output=4beadab0db5f70cd input=b08c5ec67996a97d]*/
{
int result;
#if defined(HAVE_FCHOWNAT)
int fchownat_unsupported = 0;
#endif
#if !(defined(HAVE_LCHOWN) || defined(HAVE_FCHOWNAT))
if (follow_symlinks_specified("chown", follow_symlinks))
return NULL;
#endif
if (dir_fd_and_fd_invalid("chown", dir_fd, path->fd) ||
fd_and_follow_symlinks_invalid("chown", path->fd, follow_symlinks))
return NULL;
if (PySys_Audit("os.chown", "OIIi", path->object, uid, gid,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_FCHOWN
if (path->fd != -1)
result = fchown(path->fd, uid, gid);
else
#endif
#ifdef HAVE_LCHOWN
if ((!follow_symlinks) && (dir_fd == DEFAULT_DIR_FD))
result = lchown(path->narrow, uid, gid);
else
#endif
#ifdef HAVE_FCHOWNAT
if ((dir_fd != DEFAULT_DIR_FD) || (!follow_symlinks)) {
if (HAVE_FCHOWNAT_RUNTIME) {
result = fchownat(dir_fd, path->narrow, uid, gid,
follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW);
} else {
fchownat_unsupported = 1;
}
} else
#endif
result = chown(path->narrow, uid, gid);
Py_END_ALLOW_THREADS
#ifdef HAVE_FCHOWNAT
if (fchownat_unsupported) {
/* This would be incorrect if the current platform
* doesn't support lchown.
*/
argument_unavailable_error(NULL, "dir_fd");
return NULL;
}
#endif
if (result)
return path_error(path);
Py_RETURN_NONE;
}
#endif /* HAVE_CHOWN */
#ifdef HAVE_FCHOWN
/*[clinic input]
os.fchown
fd: int
uid: uid_t
gid: gid_t
Change the owner and group id of the file specified by file descriptor.
Equivalent to os.chown(fd, uid, gid).
[clinic start generated code]*/
static PyObject *
os_fchown_impl(PyObject *module, int fd, uid_t uid, gid_t gid)
/*[clinic end generated code: output=97d21cbd5a4350a6 input=3af544ba1b13a0d7]*/
{
int res;
int async_err = 0;
if (PySys_Audit("os.chown", "iIIi", fd, uid, gid, -1) < 0) {
return NULL;
}
do {
Py_BEGIN_ALLOW_THREADS
res = fchown(fd, uid, gid);
Py_END_ALLOW_THREADS
} while (res != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res != 0)
return (!async_err) ? posix_error() : NULL;
Py_RETURN_NONE;
}
#endif /* HAVE_FCHOWN */
#ifdef HAVE_LCHOWN
/*[clinic input]
os.lchown
path : path_t
uid: uid_t
gid: gid_t
Change the owner and group id of path to the numeric uid and gid.
This function will not follow symbolic links.
Equivalent to os.chown(path, uid, gid, follow_symlinks=False).
[clinic start generated code]*/
static PyObject *
os_lchown_impl(PyObject *module, path_t *path, uid_t uid, gid_t gid)
/*[clinic end generated code: output=25eaf6af412fdf2f input=b1c6014d563a7161]*/
{
int res;
if (PySys_Audit("os.chown", "OIIi", path->object, uid, gid, -1) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
res = lchown(path->narrow, uid, gid);
Py_END_ALLOW_THREADS
if (res < 0) {
return path_error(path);
}
Py_RETURN_NONE;
}
#endif /* HAVE_LCHOWN */
static PyObject *
posix_getcwd(int use_bytes)
{
#ifdef MS_WINDOWS
wchar_t wbuf[MAXPATHLEN];
wchar_t *wbuf2 = wbuf;
DWORD len;
Py_BEGIN_ALLOW_THREADS
len = GetCurrentDirectoryW(Py_ARRAY_LENGTH(wbuf), wbuf);
/* If the buffer is large enough, len does not include the
terminating \0. If the buffer is too small, len includes
the space needed for the terminator. */
if (len >= Py_ARRAY_LENGTH(wbuf)) {
if (len <= PY_SSIZE_T_MAX / sizeof(wchar_t)) {
wbuf2 = PyMem_RawMalloc(len * sizeof(wchar_t));
}
else {
wbuf2 = NULL;
}
if (wbuf2) {
len = GetCurrentDirectoryW(len, wbuf2);
}
}
Py_END_ALLOW_THREADS
if (!wbuf2) {
PyErr_NoMemory();
return NULL;
}
if (!len) {
if (wbuf2 != wbuf)
PyMem_RawFree(wbuf2);
return PyErr_SetFromWindowsErr(0);
}
PyObject *resobj = PyUnicode_FromWideChar(wbuf2, len);
if (wbuf2 != wbuf) {
PyMem_RawFree(wbuf2);
}
if (use_bytes) {
if (resobj == NULL) {
return NULL;
}
Py_SETREF(resobj, PyUnicode_EncodeFSDefault(resobj));
}
return resobj;
#else
const size_t chunk = 1024;
char *buf = NULL;
char *cwd = NULL;
size_t buflen = 0;
Py_BEGIN_ALLOW_THREADS
do {
char *newbuf;
if (buflen <= PY_SSIZE_T_MAX - chunk) {
buflen += chunk;
newbuf = PyMem_RawRealloc(buf, buflen);
}
else {
newbuf = NULL;
}
if (newbuf == NULL) {
PyMem_RawFree(buf);
buf = NULL;
break;
}
buf = newbuf;
cwd = getcwd(buf, buflen);
} while (cwd == NULL && errno == ERANGE);
Py_END_ALLOW_THREADS
if (buf == NULL) {
return PyErr_NoMemory();
}
if (cwd == NULL) {
PyMem_RawFree(buf);
return posix_error();
}
PyObject *obj;
if (use_bytes) {
obj = PyBytes_FromStringAndSize(buf, strlen(buf));
}
else {
obj = PyUnicode_DecodeFSDefault(buf);
}
PyMem_RawFree(buf);
return obj;
#endif /* !MS_WINDOWS */
}
/*[clinic input]
os.getcwd
Return a unicode string representing the current working directory.
[clinic start generated code]*/
static PyObject *
os_getcwd_impl(PyObject *module)
/*[clinic end generated code: output=21badfae2ea99ddc input=f069211bb70e3d39]*/
{
return posix_getcwd(0);
}
/*[clinic input]
os.getcwdb
Return a bytes string representing the current working directory.
[clinic start generated code]*/
static PyObject *
os_getcwdb_impl(PyObject *module)
/*[clinic end generated code: output=3dd47909480e4824 input=f6f6a378dad3d9cb]*/
{
return posix_getcwd(1);
}
#if ((!defined(HAVE_LINK)) && defined(MS_WINDOWS))
#define HAVE_LINK 1
#endif
#ifdef HAVE_LINK
/*[clinic input]
os.link
src : path_t
dst : path_t
*
src_dir_fd : dir_fd = None
dst_dir_fd : dir_fd = None
follow_symlinks: bool = True
Create a hard link to a file.
If either src_dir_fd or dst_dir_fd is not None, it should be a file
descriptor open to a directory, and the respective path string (src or dst)
should be relative; the path will then be relative to that directory.
If follow_symlinks is False, and the last element of src is a symbolic
link, link will create a link to the symbolic link itself instead of the
file the link points to.
src_dir_fd, dst_dir_fd, and follow_symlinks may not be implemented on your
platform. If they are unavailable, using them will raise a
NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_link_impl(PyObject *module, path_t *src, path_t *dst, int src_dir_fd,
int dst_dir_fd, int follow_symlinks)
/*[clinic end generated code: output=7f00f6007fd5269a input=b0095ebbcbaa7e04]*/
{
#ifdef MS_WINDOWS
BOOL result = FALSE;
#else
int result;
#endif
#if defined(HAVE_LINKAT)
int linkat_unavailable = 0;
#endif
#ifndef HAVE_LINKAT
if ((src_dir_fd != DEFAULT_DIR_FD) || (dst_dir_fd != DEFAULT_DIR_FD)) {
argument_unavailable_error("link", "src_dir_fd and dst_dir_fd");
return NULL;
}
#endif
#ifndef MS_WINDOWS
if ((src->narrow && dst->wide) || (src->wide && dst->narrow)) {
PyErr_SetString(PyExc_NotImplementedError,
"link: src and dst must be the same type");
return NULL;
}
#endif
if (PySys_Audit("os.link", "OOii", src->object, dst->object,
src_dir_fd == DEFAULT_DIR_FD ? -1 : src_dir_fd,
dst_dir_fd == DEFAULT_DIR_FD ? -1 : dst_dir_fd) < 0) {
return NULL;
}
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
result = CreateHardLinkW(dst->wide, src->wide, NULL);
Py_END_ALLOW_THREADS
if (!result)
return path_error2(src, dst);
#else
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_LINKAT
if ((src_dir_fd != DEFAULT_DIR_FD) ||
(dst_dir_fd != DEFAULT_DIR_FD) ||
(!follow_symlinks)) {
if (HAVE_LINKAT_RUNTIME) {
result = linkat(src_dir_fd, src->narrow,
dst_dir_fd, dst->narrow,
follow_symlinks ? AT_SYMLINK_FOLLOW : 0);
}
#ifdef __APPLE__
else {
if (src_dir_fd == DEFAULT_DIR_FD && dst_dir_fd == DEFAULT_DIR_FD) {
/* See issue 41355: This matches the behaviour of !HAVE_LINKAT */
result = link(src->narrow, dst->narrow);
} else {
linkat_unavailable = 1;
}
}
#endif
}
else
#endif /* HAVE_LINKAT */
result = link(src->narrow, dst->narrow);
Py_END_ALLOW_THREADS
#ifdef HAVE_LINKAT
if (linkat_unavailable) {
/* Either or both dir_fd arguments were specified */
if (src_dir_fd != DEFAULT_DIR_FD) {
argument_unavailable_error("link", "src_dir_fd");
} else {
argument_unavailable_error("link", "dst_dir_fd");
}
return NULL;
}
#endif
if (result)
return path_error2(src, dst);
#endif /* MS_WINDOWS */
Py_RETURN_NONE;
}
#endif
#if defined(MS_WINDOWS) && !defined(HAVE_OPENDIR)
static PyObject *
_listdir_windows_no_opendir(path_t *path, PyObject *list)
{
PyObject *v;
HANDLE hFindFile = INVALID_HANDLE_VALUE;
BOOL result;
wchar_t namebuf[MAX_PATH+4]; /* Overallocate for "\*.*" */
/* only claim to have space for MAX_PATH */
Py_ssize_t len = Py_ARRAY_LENGTH(namebuf)-4;
wchar_t *wnamebuf = NULL;
WIN32_FIND_DATAW wFileData;
const wchar_t *po_wchars;
if (!path->wide) { /* Default arg: "." */
po_wchars = L".";
len = 1;
} else {
po_wchars = path->wide;
len = wcslen(path->wide);
}
/* The +5 is so we can append "\\*.*\0" */
wnamebuf = PyMem_New(wchar_t, len + 5);
if (!wnamebuf) {
PyErr_NoMemory();
goto exit;
}
wcscpy(wnamebuf, po_wchars);
if (len > 0) {
wchar_t wch = wnamebuf[len-1];
if (wch != SEP && wch != ALTSEP && wch != L':')
wnamebuf[len++] = SEP;
wcscpy(wnamebuf + len, L"*.*");
}
if ((list = PyList_New(0)) == NULL) {
goto exit;
}
Py_BEGIN_ALLOW_THREADS
hFindFile = FindFirstFileW(wnamebuf, &wFileData);
Py_END_ALLOW_THREADS
if (hFindFile == INVALID_HANDLE_VALUE) {
int error = GetLastError();
if (error == ERROR_FILE_NOT_FOUND)
goto exit;
Py_DECREF(list);
list = path_error(path);
goto exit;
}
do {
/* Skip over . and .. */
if (wcscmp(wFileData.cFileName, L".") != 0 &&
wcscmp(wFileData.cFileName, L"..") != 0) {
v = PyUnicode_FromWideChar(wFileData.cFileName,
wcslen(wFileData.cFileName));
if (path->narrow && v) {
Py_SETREF(v, PyUnicode_EncodeFSDefault(v));
}
if (v == NULL) {
Py_DECREF(list);
list = NULL;
break;
}
if (PyList_Append(list, v) != 0) {
Py_DECREF(v);
Py_DECREF(list);
list = NULL;
break;
}
Py_DECREF(v);
}
Py_BEGIN_ALLOW_THREADS
result = FindNextFileW(hFindFile, &wFileData);
Py_END_ALLOW_THREADS
/* FindNextFile sets error to ERROR_NO_MORE_FILES if
it got to the end of the directory. */
if (!result && GetLastError() != ERROR_NO_MORE_FILES) {
Py_DECREF(list);
list = path_error(path);
goto exit;
}
} while (result == TRUE);
exit:
if (hFindFile != INVALID_HANDLE_VALUE) {
if (FindClose(hFindFile) == FALSE) {
if (list != NULL) {
Py_DECREF(list);
list = path_error(path);
}
}
}
PyMem_Free(wnamebuf);
return list;
} /* end of _listdir_windows_no_opendir */
#else /* thus POSIX, ie: not (MS_WINDOWS and not HAVE_OPENDIR) */
static PyObject *
_posix_listdir(path_t *path, PyObject *list)
{
PyObject *v;
DIR *dirp = NULL;
struct dirent *ep;
int return_str; /* if false, return bytes */
#ifdef HAVE_FDOPENDIR
int fd = -1;
#endif
errno = 0;
#ifdef HAVE_FDOPENDIR
if (path->fd != -1) {
if (HAVE_FDOPENDIR_RUNTIME) {
/* closedir() closes the FD, so we duplicate it */
fd = _Py_dup(path->fd);
if (fd == -1)
return NULL;
return_str = 1;
Py_BEGIN_ALLOW_THREADS
dirp = fdopendir(fd);
Py_END_ALLOW_THREADS
} else {
PyErr_SetString(PyExc_TypeError,
"listdir: path should be string, bytes, os.PathLike or None, not int");
return NULL;
}
}
else
#endif
{
const char *name;
if (path->narrow) {
name = path->narrow;
/* only return bytes if they specified a bytes-like object */
return_str = !PyObject_CheckBuffer(path->object);
}
else {
name = ".";
return_str = 1;
}
Py_BEGIN_ALLOW_THREADS
dirp = opendir(name);
Py_END_ALLOW_THREADS
}
if (dirp == NULL) {
list = path_error(path);
#ifdef HAVE_FDOPENDIR
if (fd != -1) {
Py_BEGIN_ALLOW_THREADS
close(fd);
Py_END_ALLOW_THREADS
}
#endif
goto exit;
}
if ((list = PyList_New(0)) == NULL) {
goto exit;
}
for (;;) {
errno = 0;
Py_BEGIN_ALLOW_THREADS
ep = readdir(dirp);
Py_END_ALLOW_THREADS
if (ep == NULL) {
if (errno == 0) {
break;
} else {
Py_DECREF(list);
list = path_error(path);
goto exit;
}
}
if (ep->d_name[0] == '.' &&
(NAMLEN(ep) == 1 ||
(ep->d_name[1] == '.' && NAMLEN(ep) == 2)))
continue;
if (return_str)
v = PyUnicode_DecodeFSDefaultAndSize(ep->d_name, NAMLEN(ep));
else
v = PyBytes_FromStringAndSize(ep->d_name, NAMLEN(ep));
if (v == NULL) {
Py_CLEAR(list);
break;
}
if (PyList_Append(list, v) != 0) {
Py_DECREF(v);
Py_CLEAR(list);
break;
}
Py_DECREF(v);
}
exit:
if (dirp != NULL) {
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_FDOPENDIR
if (fd > -1)
rewinddir(dirp);
#endif
closedir(dirp);
Py_END_ALLOW_THREADS
}
return list;
} /* end of _posix_listdir */
#endif /* which OS */
/*[clinic input]
os.listdir
path : path_t(nullable=True, allow_fd='PATH_HAVE_FDOPENDIR') = None
Return a list containing the names of the files in the directory.
path can be specified as either str, bytes, or a path-like object. If path is bytes,
the filenames returned will also be bytes; in all other circumstances
the filenames returned will be str.
If path is None, uses the path='.'.
On some platforms, path may also be specified as an open file descriptor;\
the file descriptor must refer to a directory.
If this functionality is unavailable, using it raises NotImplementedError.
The list is in arbitrary order. It does not include the special
entries '.' and '..' even if they are present in the directory.
[clinic start generated code]*/
static PyObject *
os_listdir_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=293045673fcd1a75 input=e3f58030f538295d]*/
{
if (PySys_Audit("os.listdir", "O",
path->object ? path->object : Py_None) < 0) {
return NULL;
}
#if defined(MS_WINDOWS) && !defined(HAVE_OPENDIR)
return _listdir_windows_no_opendir(path, NULL);
#else
return _posix_listdir(path, NULL);
#endif
}
#ifdef MS_WINDOWS
int
_PyOS_getfullpathname(const wchar_t *path, wchar_t **abspath_p)
{
wchar_t woutbuf[MAX_PATH], *woutbufp = woutbuf;
DWORD result;
result = GetFullPathNameW(path,
Py_ARRAY_LENGTH(woutbuf), woutbuf,
NULL);
if (!result) {
return -1;
}
if (result >= Py_ARRAY_LENGTH(woutbuf)) {
if ((size_t)result <= (size_t)PY_SSIZE_T_MAX / sizeof(wchar_t)) {
woutbufp = PyMem_RawMalloc((size_t)result * sizeof(wchar_t));
}
else {
woutbufp = NULL;
}
if (!woutbufp) {
*abspath_p = NULL;
return 0;
}
result = GetFullPathNameW(path, result, woutbufp, NULL);
if (!result) {
PyMem_RawFree(woutbufp);
return -1;
}
}
if (woutbufp != woutbuf) {
*abspath_p = woutbufp;
return 0;
}
*abspath_p = _PyMem_RawWcsdup(woutbufp);
return 0;
}
/* A helper function for abspath on win32 */
/*[clinic input]
os._getfullpathname
path: path_t
/
[clinic start generated code]*/
static PyObject *
os__getfullpathname_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=bb8679d56845bc9b input=332ed537c29d0a3e]*/
{
wchar_t *abspath;
if (_PyOS_getfullpathname(path->wide, &abspath) < 0) {
return win32_error_object("GetFullPathNameW", path->object);
}
if (abspath == NULL) {
return PyErr_NoMemory();
}
PyObject *str = PyUnicode_FromWideChar(abspath, wcslen(abspath));
PyMem_RawFree(abspath);
if (str == NULL) {
return NULL;
}
if (path->narrow) {
Py_SETREF(str, PyUnicode_EncodeFSDefault(str));
}
return str;
}
/*[clinic input]
os._getfinalpathname
path: path_t
/
A helper function for samepath on windows.
[clinic start generated code]*/
static PyObject *
os__getfinalpathname_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=621a3c79bc29ebfa input=2b6b6c7cbad5fb84]*/
{
HANDLE hFile;
wchar_t buf[MAXPATHLEN], *target_path = buf;
int buf_size = Py_ARRAY_LENGTH(buf);
int result_length;
PyObject *result;
Py_BEGIN_ALLOW_THREADS
hFile = CreateFileW(
path->wide,
0, /* desired access */
0, /* share mode */
NULL, /* security attributes */
OPEN_EXISTING,
/* FILE_FLAG_BACKUP_SEMANTICS is required to open a directory */
FILE_FLAG_BACKUP_SEMANTICS,
NULL);
Py_END_ALLOW_THREADS
if (hFile == INVALID_HANDLE_VALUE) {
return win32_error_object("CreateFileW", path->object);
}
/* We have a good handle to the target, use it to determine the
target path name. */
while (1) {
Py_BEGIN_ALLOW_THREADS
result_length = GetFinalPathNameByHandleW(hFile, target_path,
buf_size, VOLUME_NAME_DOS);
Py_END_ALLOW_THREADS
if (!result_length) {
result = win32_error_object("GetFinalPathNameByHandleW",
path->object);
goto cleanup;
}
if (result_length < buf_size) {
break;
}
wchar_t *tmp;
tmp = PyMem_Realloc(target_path != buf ? target_path : NULL,
result_length * sizeof(*tmp));
if (!tmp) {
result = PyErr_NoMemory();
goto cleanup;
}
buf_size = result_length;
target_path = tmp;
}
result = PyUnicode_FromWideChar(target_path, result_length);
if (result && path->narrow) {
Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
}
cleanup:
if (target_path != buf) {
PyMem_Free(target_path);
}
CloseHandle(hFile);
return result;
}
/*[clinic input]
os._getvolumepathname
path: path_t
A helper function for ismount on Win32.
[clinic start generated code]*/
static PyObject *
os__getvolumepathname_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=804c63fd13a1330b input=722b40565fa21552]*/
{
PyObject *result;
wchar_t *mountpath=NULL;
size_t buflen;
BOOL ret;
/* Volume path should be shorter than entire path */
buflen = Py_MAX(path->length, MAX_PATH);
if (buflen > PY_DWORD_MAX) {
PyErr_SetString(PyExc_OverflowError, "path too long");
return NULL;
}
mountpath = PyMem_New(wchar_t, buflen);
if (mountpath == NULL)
return PyErr_NoMemory();
Py_BEGIN_ALLOW_THREADS
ret = GetVolumePathNameW(path->wide, mountpath,
Py_SAFE_DOWNCAST(buflen, size_t, DWORD));
Py_END_ALLOW_THREADS
if (!ret) {
result = win32_error_object("_getvolumepathname", path->object);
goto exit;
}
result = PyUnicode_FromWideChar(mountpath, wcslen(mountpath));
if (path->narrow)
Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
exit:
PyMem_Free(mountpath);
return result;
}
/*[clinic input]
os._path_splitroot
path: path_t
Removes everything after the root on Win32.
[clinic start generated code]*/
static PyObject *
os__path_splitroot_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=ab7f1a88b654581c input=dc93b1d3984cffb6]*/
{
wchar_t *buffer;
wchar_t *end;
PyObject *result = NULL;
HRESULT ret;
buffer = (wchar_t*)PyMem_Malloc(sizeof(wchar_t) * (wcslen(path->wide) + 1));
if (!buffer) {
return NULL;
}
wcscpy(buffer, path->wide);
for (wchar_t *p = wcschr(buffer, L'/'); p; p = wcschr(p, L'/')) {
*p = L'\\';
}
Py_BEGIN_ALLOW_THREADS
ret = PathCchSkipRoot(buffer, &end);
Py_END_ALLOW_THREADS
if (FAILED(ret)) {
result = Py_BuildValue("sO", "", path->object);
} else if (end != buffer) {
size_t rootLen = (size_t)(end - buffer);
result = Py_BuildValue("NN",
PyUnicode_FromWideChar(path->wide, rootLen),
PyUnicode_FromWideChar(path->wide + rootLen, -1)
);
} else {
result = Py_BuildValue("Os", path->object, "");
}
PyMem_Free(buffer);
return result;
}
#endif /* MS_WINDOWS */
/*[clinic input]
os._path_normpath
path: object
Basic path normalization.
[clinic start generated code]*/
static PyObject *
os__path_normpath_impl(PyObject *module, PyObject *path)
/*[clinic end generated code: output=b94d696d828019da input=5e90c39e12549dc0]*/
{
if (!PyUnicode_Check(path)) {
PyErr_Format(PyExc_TypeError, "expected 'str', not '%.200s'",
Py_TYPE(path)->tp_name);
return NULL;
}
Py_ssize_t len;
wchar_t *buffer = PyUnicode_AsWideCharString(path, &len);
if (!buffer) {
return NULL;
}
PyObject *result = PyUnicode_FromWideChar(_Py_normpath(buffer, len), -1);
PyMem_Free(buffer);
return result;
}
/*[clinic input]
os.mkdir
path : path_t
mode: int = 0o777
*
dir_fd : dir_fd(requires='mkdirat') = None
# "mkdir(path, mode=0o777, *, dir_fd=None)\n\n\
Create a directory.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
The mode argument is ignored on Windows.
[clinic start generated code]*/
static PyObject *
os_mkdir_impl(PyObject *module, path_t *path, int mode, int dir_fd)
/*[clinic end generated code: output=a70446903abe821f input=e965f68377e9b1ce]*/
{
int result;
#ifdef HAVE_MKDIRAT
int mkdirat_unavailable = 0;
#endif
if (PySys_Audit("os.mkdir", "Oii", path->object, mode,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
result = CreateDirectoryW(path->wide, NULL);
Py_END_ALLOW_THREADS
if (!result)
return path_error(path);
#else
Py_BEGIN_ALLOW_THREADS
#if HAVE_MKDIRAT
if (dir_fd != DEFAULT_DIR_FD) {
if (HAVE_MKDIRAT_RUNTIME) {
result = mkdirat(dir_fd, path->narrow, mode);
} else {
mkdirat_unavailable = 1;
}
} else
#endif
#if defined(__WATCOMC__) && !defined(__QNX__)
result = mkdir(path->narrow);
#else
result = mkdir(path->narrow, mode);
#endif
Py_END_ALLOW_THREADS
#if HAVE_MKDIRAT
if (mkdirat_unavailable) {
argument_unavailable_error(NULL, "dir_fd");
return NULL;
}
#endif
if (result < 0)
return path_error(path);
#endif /* MS_WINDOWS */
Py_RETURN_NONE;
}
/* sys/resource.h is needed for at least: wait3(), wait4(), broken nice. */
#if defined(HAVE_SYS_RESOURCE_H)
#include <sys/resource.h>
#endif
#ifdef HAVE_NICE
/*[clinic input]
os.nice
increment: int
/
Add increment to the priority of process and return the new priority.
[clinic start generated code]*/
static PyObject *
os_nice_impl(PyObject *module, int increment)
/*[clinic end generated code: output=9dad8a9da8109943 input=864be2d402a21da2]*/
{
int value;
/* There are two flavours of 'nice': one that returns the new
priority (as required by almost all standards out there) and the
Linux/FreeBSD one, which returns '0' on success and advices
the use of getpriority() to get the new priority.
If we are of the nice family that returns the new priority, we
need to clear errno before the call, and check if errno is filled
before calling posix_error() on a returnvalue of -1, because the
-1 may be the actual new priority! */
errno = 0;
value = nice(increment);
#if defined(HAVE_BROKEN_NICE) && defined(HAVE_GETPRIORITY)
if (value == 0)
value = getpriority(PRIO_PROCESS, 0);
#endif
if (value == -1 && errno != 0)
/* either nice() or getpriority() returned an error */
return posix_error();
return PyLong_FromLong((long) value);
}
#endif /* HAVE_NICE */
#ifdef HAVE_GETPRIORITY
/*[clinic input]
os.getpriority
which: int
who: int
Return program scheduling priority.
[clinic start generated code]*/
static PyObject *
os_getpriority_impl(PyObject *module, int which, int who)
/*[clinic end generated code: output=c41b7b63c7420228 input=9be615d40e2544ef]*/
{
int retval;
errno = 0;
retval = getpriority(which, who);
if (errno != 0)
return posix_error();
return PyLong_FromLong((long)retval);
}
#endif /* HAVE_GETPRIORITY */
#ifdef HAVE_SETPRIORITY
/*[clinic input]
os.setpriority
which: int
who: int
priority: int
Set program scheduling priority.
[clinic start generated code]*/
static PyObject *
os_setpriority_impl(PyObject *module, int which, int who, int priority)
/*[clinic end generated code: output=3d910d95a7771eb2 input=710ccbf65b9dc513]*/
{
int retval;
retval = setpriority(which, who, priority);
if (retval == -1)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETPRIORITY */
static PyObject *
internal_rename(path_t *src, path_t *dst, int src_dir_fd, int dst_dir_fd, int is_replace)
{
const char *function_name = is_replace ? "replace" : "rename";
int dir_fd_specified;
#ifdef HAVE_RENAMEAT
int renameat_unavailable = 0;
#endif
#ifdef MS_WINDOWS
BOOL result;
int flags = is_replace ? MOVEFILE_REPLACE_EXISTING : 0;
#else
int result;
#endif
dir_fd_specified = (src_dir_fd != DEFAULT_DIR_FD) ||
(dst_dir_fd != DEFAULT_DIR_FD);
#ifndef HAVE_RENAMEAT
if (dir_fd_specified) {
argument_unavailable_error(function_name, "src_dir_fd and dst_dir_fd");
return NULL;
}
#endif
if (PySys_Audit("os.rename", "OOii", src->object, dst->object,
src_dir_fd == DEFAULT_DIR_FD ? -1 : src_dir_fd,
dst_dir_fd == DEFAULT_DIR_FD ? -1 : dst_dir_fd) < 0) {
return NULL;
}
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
result = MoveFileExW(src->wide, dst->wide, flags);
Py_END_ALLOW_THREADS
if (!result)
return path_error2(src, dst);
#else
if ((src->narrow && dst->wide) || (src->wide && dst->narrow)) {
PyErr_Format(PyExc_ValueError,
"%s: src and dst must be the same type", function_name);
return NULL;
}
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_RENAMEAT
if (dir_fd_specified) {
if (HAVE_RENAMEAT_RUNTIME) {
result = renameat(src_dir_fd, src->narrow, dst_dir_fd, dst->narrow);
} else {
renameat_unavailable = 1;
}
} else
#endif
result = rename(src->narrow, dst->narrow);
Py_END_ALLOW_THREADS
#ifdef HAVE_RENAMEAT
if (renameat_unavailable) {
argument_unavailable_error(function_name, "src_dir_fd and dst_dir_fd");
return NULL;
}
#endif
if (result)
return path_error2(src, dst);
#endif
Py_RETURN_NONE;
}
/*[clinic input]
os.rename
src : path_t
dst : path_t
*
src_dir_fd : dir_fd = None
dst_dir_fd : dir_fd = None
Rename a file or directory.
If either src_dir_fd or dst_dir_fd is not None, it should be a file
descriptor open to a directory, and the respective path string (src or dst)
should be relative; the path will then be relative to that directory.
src_dir_fd and dst_dir_fd, may not be implemented on your platform.
If they are unavailable, using them will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_rename_impl(PyObject *module, path_t *src, path_t *dst, int src_dir_fd,
int dst_dir_fd)
/*[clinic end generated code: output=59e803072cf41230 input=faa61c847912c850]*/
{
return internal_rename(src, dst, src_dir_fd, dst_dir_fd, 0);
}
/*[clinic input]
os.replace = os.rename
Rename a file or directory, overwriting the destination.
If either src_dir_fd or dst_dir_fd is not None, it should be a file
descriptor open to a directory, and the respective path string (src or dst)
should be relative; the path will then be relative to that directory.
src_dir_fd and dst_dir_fd, may not be implemented on your platform.
If they are unavailable, using them will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_replace_impl(PyObject *module, path_t *src, path_t *dst, int src_dir_fd,
int dst_dir_fd)
/*[clinic end generated code: output=1968c02e7857422b input=c003f0def43378ef]*/
{
return internal_rename(src, dst, src_dir_fd, dst_dir_fd, 1);
}
/*[clinic input]
os.rmdir
path: path_t
*
dir_fd: dir_fd(requires='unlinkat') = None
Remove a directory.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_rmdir_impl(PyObject *module, path_t *path, int dir_fd)
/*[clinic end generated code: output=080eb54f506e8301 input=38c8b375ca34a7e2]*/
{
int result;
#ifdef HAVE_UNLINKAT
int unlinkat_unavailable = 0;
#endif
if (PySys_Audit("os.rmdir", "Oi", path->object,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
#ifdef MS_WINDOWS
/* Windows, success=1, UNIX, success=0 */
result = !RemoveDirectoryW(path->wide);
#else
#ifdef HAVE_UNLINKAT
if (dir_fd != DEFAULT_DIR_FD) {
if (HAVE_UNLINKAT_RUNTIME) {
result = unlinkat(dir_fd, path->narrow, AT_REMOVEDIR);
} else {
unlinkat_unavailable = 1;
result = -1;
}
} else
#endif
result = rmdir(path->narrow);
#endif
Py_END_ALLOW_THREADS
#ifdef HAVE_UNLINKAT
if (unlinkat_unavailable) {
argument_unavailable_error("rmdir", "dir_fd");
return NULL;
}
#endif
if (result)
return path_error(path);
Py_RETURN_NONE;
}
#ifdef HAVE_SYSTEM
#ifdef MS_WINDOWS
/*[clinic input]
os.system -> long
command: Py_UNICODE
Execute the command in a subshell.
[clinic start generated code]*/
static long
os_system_impl(PyObject *module, const Py_UNICODE *command)
/*[clinic end generated code: output=5b7c3599c068ca42 input=303f5ce97df606b0]*/
{
long result;
if (PySys_Audit("os.system", "(u)", command) < 0) {
return -1;
}
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
result = _wsystem(command);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
return result;
}
#else /* MS_WINDOWS */
/*[clinic input]
os.system -> long
command: FSConverter
Execute the command in a subshell.
[clinic start generated code]*/
static long
os_system_impl(PyObject *module, PyObject *command)
/*[clinic end generated code: output=290fc437dd4f33a0 input=86a58554ba6094af]*/
{
long result;
const char *bytes = PyBytes_AsString(command);
if (PySys_Audit("os.system", "(O)", command) < 0) {
return -1;
}
Py_BEGIN_ALLOW_THREADS
result = system(bytes);
Py_END_ALLOW_THREADS
return result;
}
#endif
#endif /* HAVE_SYSTEM */
#ifdef HAVE_UMASK
/*[clinic input]
os.umask
mask: int
/
Set the current numeric umask and return the previous umask.
[clinic start generated code]*/
static PyObject *
os_umask_impl(PyObject *module, int mask)
/*[clinic end generated code: output=a2e33ce3bc1a6e33 input=ab6bfd9b24d8a7e8]*/
{
int i = (int)umask(mask);
if (i < 0)
return posix_error();
return PyLong_FromLong((long)i);
}
#endif
#ifdef MS_WINDOWS
/* override the default DeleteFileW behavior so that directory
symlinks can be removed with this function, the same as with
Unix symlinks */
BOOL WINAPI Py_DeleteFileW(LPCWSTR lpFileName)
{
WIN32_FILE_ATTRIBUTE_DATA info;
WIN32_FIND_DATAW find_data;
HANDLE find_data_handle;
int is_directory = 0;
int is_link = 0;
if (GetFileAttributesExW(lpFileName, GetFileExInfoStandard, &info)) {
is_directory = info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
/* Get WIN32_FIND_DATA structure for the path to determine if
it is a symlink */
if(is_directory &&
info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
find_data_handle = FindFirstFileW(lpFileName, &find_data);
if(find_data_handle != INVALID_HANDLE_VALUE) {
/* IO_REPARSE_TAG_SYMLINK if it is a symlink and
IO_REPARSE_TAG_MOUNT_POINT if it is a junction point. */
is_link = find_data.dwReserved0 == IO_REPARSE_TAG_SYMLINK ||
find_data.dwReserved0 == IO_REPARSE_TAG_MOUNT_POINT;
FindClose(find_data_handle);
}
}
}
if (is_directory && is_link)
return RemoveDirectoryW(lpFileName);
return DeleteFileW(lpFileName);
}
#endif /* MS_WINDOWS */
/*[clinic input]
os.unlink
path: path_t
*
dir_fd: dir_fd(requires='unlinkat')=None
Remove a file (same as remove()).
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_unlink_impl(PyObject *module, path_t *path, int dir_fd)
/*[clinic end generated code: output=621797807b9963b1 input=d7bcde2b1b2a2552]*/
{
int result;
#ifdef HAVE_UNLINKAT
int unlinkat_unavailable = 0;
#endif
if (PySys_Audit("os.remove", "Oi", path->object,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
#ifdef MS_WINDOWS
/* Windows, success=1, UNIX, success=0 */
result = !Py_DeleteFileW(path->wide);
#else
#ifdef HAVE_UNLINKAT
if (dir_fd != DEFAULT_DIR_FD) {
if (HAVE_UNLINKAT_RUNTIME) {
result = unlinkat(dir_fd, path->narrow, 0);
} else {
unlinkat_unavailable = 1;
}
} else
#endif /* HAVE_UNLINKAT */
result = unlink(path->narrow);
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
#ifdef HAVE_UNLINKAT
if (unlinkat_unavailable) {
argument_unavailable_error(NULL, "dir_fd");
return NULL;
}
#endif
if (result)
return path_error(path);
Py_RETURN_NONE;
}
/*[clinic input]
os.remove = os.unlink
Remove a file (same as unlink()).
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_remove_impl(PyObject *module, path_t *path, int dir_fd)
/*[clinic end generated code: output=a8535b28f0068883 input=e05c5ab55cd30983]*/
{
return os_unlink_impl(module, path, dir_fd);
}
static PyStructSequence_Field uname_result_fields[] = {
{"sysname", "operating system name"},
{"nodename", "name of machine on network (implementation-defined)"},
{"release", "operating system release"},
{"version", "operating system version"},
{"machine", "hardware identifier"},
{NULL}
};
PyDoc_STRVAR(uname_result__doc__,
"uname_result: Result from os.uname().\n\n\
This object may be accessed either as a tuple of\n\
(sysname, nodename, release, version, machine),\n\
or via the attributes sysname, nodename, release, version, and machine.\n\
\n\
See os.uname for more information.");
static PyStructSequence_Desc uname_result_desc = {
MODNAME ".uname_result", /* name */
uname_result__doc__, /* doc */
uname_result_fields,
5
};
#ifdef HAVE_UNAME
/*[clinic input]
os.uname
Return an object identifying the current operating system.
The object behaves like a named tuple with the following fields:
(sysname, nodename, release, version, machine)
[clinic start generated code]*/
static PyObject *
os_uname_impl(PyObject *module)
/*[clinic end generated code: output=e6a49cf1a1508a19 input=e68bd246db3043ed]*/
{
struct utsname u;
int res;
PyObject *value;
Py_BEGIN_ALLOW_THREADS
res = uname(&u);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error();
PyObject *UnameResultType = get_posix_state(module)->UnameResultType;
value = PyStructSequence_New((PyTypeObject *)UnameResultType);
if (value == NULL)
return NULL;
#define SET(i, field) \
{ \
PyObject *o = PyUnicode_DecodeFSDefault(field); \
if (!o) { \
Py_DECREF(value); \
return NULL; \
} \
PyStructSequence_SET_ITEM(value, i, o); \
} \
SET(0, u.sysname);
SET(1, u.nodename);
SET(2, u.release);
SET(3, u.version);
SET(4, u.machine);
#undef SET
return value;
}
#endif /* HAVE_UNAME */
typedef struct {
int now;
time_t atime_s;
long atime_ns;
time_t mtime_s;
long mtime_ns;
} utime_t;
/*
* these macros assume that "ut" is a pointer to a utime_t
* they also intentionally leak the declaration of a pointer named "time"
*/
#define UTIME_TO_TIMESPEC \
struct timespec ts[2]; \
struct timespec *time; \
if (ut->now) \
time = NULL; \
else { \
ts[0].tv_sec = ut->atime_s; \
ts[0].tv_nsec = ut->atime_ns; \
ts[1].tv_sec = ut->mtime_s; \
ts[1].tv_nsec = ut->mtime_ns; \
time = ts; \
} \
#define UTIME_TO_TIMEVAL \
struct timeval tv[2]; \
struct timeval *time; \
if (ut->now) \
time = NULL; \
else { \
tv[0].tv_sec = ut->atime_s; \
tv[0].tv_usec = ut->atime_ns / 1000; \
tv[1].tv_sec = ut->mtime_s; \
tv[1].tv_usec = ut->mtime_ns / 1000; \
time = tv; \
} \
#define UTIME_TO_UTIMBUF \
struct utimbuf u; \
struct utimbuf *time; \
if (ut->now) \
time = NULL; \
else { \
u.actime = ut->atime_s; \
u.modtime = ut->mtime_s; \
time = &u; \
}
#define UTIME_TO_TIME_T \
time_t timet[2]; \
time_t *time; \
if (ut->now) \
time = NULL; \
else { \
timet[0] = ut->atime_s; \
timet[1] = ut->mtime_s; \
time = timet; \
} \
#if defined(HAVE_FUTIMESAT) || defined(HAVE_UTIMENSAT)
static int
utime_dir_fd(utime_t *ut, int dir_fd, const char *path, int follow_symlinks)
{
#if defined(__APPLE__) && defined(HAVE_UTIMENSAT)
if (HAVE_UTIMENSAT_RUNTIME) {
int flags = follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW;
UTIME_TO_TIMESPEC;
return utimensat(dir_fd, path, time, flags);
} else {
errno = ENOSYS;
return -1;
}
#elif defined(HAVE_UTIMENSAT)
int flags = follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW;
UTIME_TO_TIMESPEC;
return utimensat(dir_fd, path, time, flags);
#elif defined(HAVE_FUTIMESAT)
UTIME_TO_TIMEVAL;
/*
* follow_symlinks will never be false here;
* we only allow !follow_symlinks and dir_fd together
* if we have utimensat()
*/
assert(follow_symlinks);
return futimesat(dir_fd, path, time);
#endif
}
#define FUTIMENSAT_DIR_FD_CONVERTER dir_fd_converter
#else
#define FUTIMENSAT_DIR_FD_CONVERTER dir_fd_unavailable
#endif
#if defined(HAVE_FUTIMES) || defined(HAVE_FUTIMENS)
static int
utime_fd(utime_t *ut, int fd)
{
#ifdef HAVE_FUTIMENS
if (HAVE_FUTIMENS_RUNTIME) {
UTIME_TO_TIMESPEC;
return futimens(fd, time);
} else
#ifndef HAVE_FUTIMES
{
/* Not sure if this can happen */
PyErr_SetString(
PyExc_RuntimeError,
"neither futimens nor futimes are supported"
" on this system");
return -1;
}
#endif
#endif
#ifdef HAVE_FUTIMES
{
UTIME_TO_TIMEVAL;
return futimes(fd, time);
}
#endif
}
#define PATH_UTIME_HAVE_FD 1
#else
#define PATH_UTIME_HAVE_FD 0
#endif
#if defined(HAVE_UTIMENSAT) || defined(HAVE_LUTIMES)
# define UTIME_HAVE_NOFOLLOW_SYMLINKS
#endif
#ifdef UTIME_HAVE_NOFOLLOW_SYMLINKS
static int
utime_nofollow_symlinks(utime_t *ut, const char *path)
{
#ifdef HAVE_UTIMENSAT
if (HAVE_UTIMENSAT_RUNTIME) {
UTIME_TO_TIMESPEC;
return utimensat(DEFAULT_DIR_FD, path, time, AT_SYMLINK_NOFOLLOW);
} else
#ifndef HAVE_LUTIMES
{
/* Not sure if this can happen */
PyErr_SetString(
PyExc_RuntimeError,
"neither utimensat nor lutimes are supported"
" on this system");
return -1;
}
#endif
#endif
#ifdef HAVE_LUTIMES
{
UTIME_TO_TIMEVAL;
return lutimes(path, time);
}
#endif
}
#endif
#ifndef MS_WINDOWS
static int
utime_default(utime_t *ut, const char *path)
{
#if defined(__APPLE__) && defined(HAVE_UTIMENSAT)
if (HAVE_UTIMENSAT_RUNTIME) {
UTIME_TO_TIMESPEC;
return utimensat(DEFAULT_DIR_FD, path, time, 0);
} else {
UTIME_TO_TIMEVAL;
return utimes(path, time);
}
#elif defined(HAVE_UTIMENSAT)
UTIME_TO_TIMESPEC;
return utimensat(DEFAULT_DIR_FD, path, time, 0);
#elif defined(HAVE_UTIMES)
UTIME_TO_TIMEVAL;
return utimes(path, time);
#elif defined(HAVE_UTIME_H)
UTIME_TO_UTIMBUF;
return utime(path, time);
#else
UTIME_TO_TIME_T;
return utime(path, time);
#endif
}
#endif
static int
split_py_long_to_s_and_ns(PyObject *module, PyObject *py_long, time_t *s, long *ns)
{
int result = 0;
PyObject *divmod;
divmod = PyNumber_Divmod(py_long, get_posix_state(module)->billion);
if (!divmod)
goto exit;
if (!PyTuple_Check(divmod) || PyTuple_GET_SIZE(divmod) != 2) {
PyErr_Format(PyExc_TypeError,
"%.200s.__divmod__() must return a 2-tuple, not %.200s",
_PyType_Name(Py_TYPE(py_long)), _PyType_Name(Py_TYPE(divmod)));
goto exit;
}
*s = _PyLong_AsTime_t(PyTuple_GET_ITEM(divmod, 0));
if ((*s == -1) && PyErr_Occurred())
goto exit;
*ns = PyLong_AsLong(PyTuple_GET_ITEM(divmod, 1));
if ((*ns == -1) && PyErr_Occurred())
goto exit;
result = 1;
exit:
Py_XDECREF(divmod);
return result;
}
/*[clinic input]
os.utime
path: path_t(allow_fd='PATH_UTIME_HAVE_FD')
times: object = None
*
ns: object = NULL
dir_fd: dir_fd(requires='futimensat') = None
follow_symlinks: bool=True
# "utime(path, times=None, *[, ns], dir_fd=None, follow_symlinks=True)\n\
Set the access and modified time of path.
path may always be specified as a string.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
If times is not None, it must be a tuple (atime, mtime);
atime and mtime should be expressed as float seconds since the epoch.
If ns is specified, it must be a tuple (atime_ns, mtime_ns);
atime_ns and mtime_ns should be expressed as integer nanoseconds
since the epoch.
If times is None and ns is unspecified, utime uses the current time.
Specifying tuples for both times and ns is an error.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
If follow_symlinks is False, and the last element of the path is a symbolic
link, utime will modify the symbolic link itself instead of the file the
link points to.
It is an error to use dir_fd or follow_symlinks when specifying path
as an open file descriptor.
dir_fd and follow_symlinks may not be available on your platform.
If they are unavailable, using them will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_utime_impl(PyObject *module, path_t *path, PyObject *times, PyObject *ns,
int dir_fd, int follow_symlinks)
/*[clinic end generated code: output=cfcac69d027b82cf input=2fbd62a2f228f8f4]*/
{
#ifdef MS_WINDOWS
HANDLE hFile;
FILETIME atime, mtime;
#else
int result;
#endif
utime_t utime;
memset(&utime, 0, sizeof(utime_t));
if (times != Py_None && ns) {
PyErr_SetString(PyExc_ValueError,
"utime: you may specify either 'times'"
" or 'ns' but not both");
return NULL;
}
if (times != Py_None) {
time_t a_sec, m_sec;
long a_nsec, m_nsec;
if (!PyTuple_CheckExact(times) || (PyTuple_Size(times) != 2)) {
PyErr_SetString(PyExc_TypeError,
"utime: 'times' must be either"
" a tuple of two ints or None");
return NULL;
}
utime.now = 0;
if (_PyTime_ObjectToTimespec(PyTuple_GET_ITEM(times, 0),
&a_sec, &a_nsec, _PyTime_ROUND_FLOOR) == -1 ||
_PyTime_ObjectToTimespec(PyTuple_GET_ITEM(times, 1),
&m_sec, &m_nsec, _PyTime_ROUND_FLOOR) == -1) {
return NULL;
}
utime.atime_s = a_sec;
utime.atime_ns = a_nsec;
utime.mtime_s = m_sec;
utime.mtime_ns = m_nsec;
}
else if (ns) {
if (!PyTuple_CheckExact(ns) || (PyTuple_Size(ns) != 2)) {
PyErr_SetString(PyExc_TypeError,
"utime: 'ns' must be a tuple of two ints");
return NULL;
}
utime.now = 0;
if (!split_py_long_to_s_and_ns(module, PyTuple_GET_ITEM(ns, 0),
&utime.atime_s, &utime.atime_ns) ||
!split_py_long_to_s_and_ns(module, PyTuple_GET_ITEM(ns, 1),
&utime.mtime_s, &utime.mtime_ns)) {
return NULL;
}
}
else {
/* times and ns are both None/unspecified. use "now". */
utime.now = 1;
}
#if !defined(UTIME_HAVE_NOFOLLOW_SYMLINKS)
if (follow_symlinks_specified("utime", follow_symlinks))
return NULL;
#endif
if (path_and_dir_fd_invalid("utime", path, dir_fd) ||
dir_fd_and_fd_invalid("utime", dir_fd, path->fd) ||
fd_and_follow_symlinks_invalid("utime", path->fd, follow_symlinks))
return NULL;
#if !defined(HAVE_UTIMENSAT)
if ((dir_fd != DEFAULT_DIR_FD) && (!follow_symlinks)) {
PyErr_SetString(PyExc_ValueError,
"utime: cannot use dir_fd and follow_symlinks "
"together on this platform");
return NULL;
}
#endif
if (PySys_Audit("os.utime", "OOOi", path->object, times, ns ? ns : Py_None,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
hFile = CreateFileW(path->wide, FILE_WRITE_ATTRIBUTES, 0,
NULL, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS, NULL);
Py_END_ALLOW_THREADS
if (hFile == INVALID_HANDLE_VALUE) {
path_error(path);
return NULL;
}
if (utime.now) {
GetSystemTimeAsFileTime(&mtime);
atime = mtime;
}
else {
_Py_time_t_to_FILE_TIME(utime.atime_s, utime.atime_ns, &atime);
_Py_time_t_to_FILE_TIME(utime.mtime_s, utime.mtime_ns, &mtime);
}
if (!SetFileTime(hFile, NULL, &atime, &mtime)) {
/* Avoid putting the file name into the error here,
as that may confuse the user into believing that
something is wrong with the file, when it also
could be the time stamp that gives a problem. */
PyErr_SetFromWindowsErr(0);
CloseHandle(hFile);
return NULL;
}
CloseHandle(hFile);
#else /* MS_WINDOWS */
Py_BEGIN_ALLOW_THREADS
#ifdef UTIME_HAVE_NOFOLLOW_SYMLINKS
if ((!follow_symlinks) && (dir_fd == DEFAULT_DIR_FD))
result = utime_nofollow_symlinks(&utime, path->narrow);
else
#endif
#if defined(HAVE_FUTIMESAT) || defined(HAVE_UTIMENSAT)
if ((dir_fd != DEFAULT_DIR_FD) || (!follow_symlinks)) {
result = utime_dir_fd(&utime, dir_fd, path->narrow, follow_symlinks);
} else
#endif
#if defined(HAVE_FUTIMES) || defined(HAVE_FUTIMENS)
if (path->fd != -1)
result = utime_fd(&utime, path->fd);
else
#endif
result = utime_default(&utime, path->narrow);
Py_END_ALLOW_THREADS
#if defined(__APPLE__) && defined(HAVE_UTIMENSAT)
/* See utime_dir_fd implementation */
if (result == -1 && errno == ENOSYS) {
argument_unavailable_error(NULL, "dir_fd");
return NULL;
}
#endif
if (result < 0) {
/* see previous comment about not putting filename in error here */
posix_error();
return NULL;
}
#endif /* MS_WINDOWS */
Py_RETURN_NONE;
}
/* Process operations */
/*[clinic input]
os._exit
status: int
Exit to the system with specified status, without normal exit processing.
[clinic start generated code]*/
static PyObject *
os__exit_impl(PyObject *module, int status)
/*[clinic end generated code: output=116e52d9c2260d54 input=5e6d57556b0c4a62]*/
{
_exit(status);
return NULL; /* Make gcc -Wall happy */
}
#if defined(HAVE_WEXECV) || defined(HAVE_WSPAWNV)
#define EXECV_CHAR wchar_t
#else
#define EXECV_CHAR char
#endif
#if defined(HAVE_EXECV) || defined(HAVE_SPAWNV) || defined(HAVE_RTPSPAWN)
static void
free_string_array(EXECV_CHAR **array, Py_ssize_t count)
{
Py_ssize_t i;
for (i = 0; i < count; i++)
PyMem_Free(array[i]);
PyMem_Free(array);
}
static int
fsconvert_strdup(PyObject *o, EXECV_CHAR **out)
{
Py_ssize_t size;
PyObject *ub;
int result = 0;
#if defined(HAVE_WEXECV) || defined(HAVE_WSPAWNV)
if (!PyUnicode_FSDecoder(o, &ub))
return 0;
*out = PyUnicode_AsWideCharString(ub, &size);
if (*out)
result = 1;
#else
if (!PyUnicode_FSConverter(o, &ub))
return 0;
size = PyBytes_GET_SIZE(ub);
*out = PyMem_Malloc(size + 1);
if (*out) {
memcpy(*out, PyBytes_AS_STRING(ub), size + 1);
result = 1;
} else
PyErr_NoMemory();
#endif
Py_DECREF(ub);
return result;
}
#endif
#if defined(HAVE_EXECV) || defined (HAVE_FEXECVE) || defined(HAVE_RTPSPAWN)
static EXECV_CHAR**
parse_envlist(PyObject* env, Py_ssize_t *envc_ptr)
{
Py_ssize_t i, pos, envc;
PyObject *keys=NULL, *vals=NULL;
PyObject *key, *val, *key2, *val2, *keyval;
EXECV_CHAR **envlist;
i = PyMapping_Size(env);
if (i < 0)
return NULL;
envlist = PyMem_NEW(EXECV_CHAR *, i + 1);
if (envlist == NULL) {
PyErr_NoMemory();
return NULL;
}
envc = 0;
keys = PyMapping_Keys(env);
if (!keys)
goto error;
vals = PyMapping_Values(env);
if (!vals)
goto error;
if (!PyList_Check(keys) || !PyList_Check(vals)) {
PyErr_Format(PyExc_TypeError,
"env.keys() or env.values() is not a list");
goto error;
}
for (pos = 0; pos < i; pos++) {
key = PyList_GetItem(keys, pos);
val = PyList_GetItem(vals, pos);
if (!key || !val)
goto error;
#if defined(HAVE_WEXECV) || defined(HAVE_WSPAWNV)
if (!PyUnicode_FSDecoder(key, &key2))
goto error;
if (!PyUnicode_FSDecoder(val, &val2)) {
Py_DECREF(key2);
goto error;
}
/* Search from index 1 because on Windows starting '=' is allowed for
defining hidden environment variables. */
if (PyUnicode_GET_LENGTH(key2) == 0 ||
PyUnicode_FindChar(key2, '=', 1, PyUnicode_GET_LENGTH(key2), 1) != -1)
{
PyErr_SetString(PyExc_ValueError, "illegal environment variable name");
Py_DECREF(key2);
Py_DECREF(val2);
goto error;
}
keyval = PyUnicode_FromFormat("%U=%U", key2, val2);
#else
if (!PyUnicode_FSConverter(key, &key2))
goto error;
if (!PyUnicode_FSConverter(val, &val2)) {
Py_DECREF(key2);
goto error;
}
if (PyBytes_GET_SIZE(key2) == 0 ||
strchr(PyBytes_AS_STRING(key2) + 1, '=') != NULL)
{
PyErr_SetString(PyExc_ValueError, "illegal environment variable name");
Py_DECREF(key2);
Py_DECREF(val2);
goto error;
}
keyval = PyBytes_FromFormat("%s=%s", PyBytes_AS_STRING(key2),
PyBytes_AS_STRING(val2));
#endif
Py_DECREF(key2);
Py_DECREF(val2);
if (!keyval)
goto error;
if (!fsconvert_strdup(keyval, &envlist[envc++])) {
Py_DECREF(keyval);
goto error;
}
Py_DECREF(keyval);
}
Py_DECREF(vals);
Py_DECREF(keys);
envlist[envc] = 0;
*envc_ptr = envc;
return envlist;
error:
Py_XDECREF(keys);
Py_XDECREF(vals);
free_string_array(envlist, envc);
return NULL;
}
static EXECV_CHAR**
parse_arglist(PyObject* argv, Py_ssize_t *argc)
{
int i;
EXECV_CHAR **argvlist = PyMem_NEW(EXECV_CHAR *, *argc+1);
if (argvlist == NULL) {
PyErr_NoMemory();
return NULL;
}
for (i = 0; i < *argc; i++) {
PyObject* item = PySequence_ITEM(argv, i);
if (item == NULL)
goto fail;
if (!fsconvert_strdup(item, &argvlist[i])) {
Py_DECREF(item);
goto fail;
}
Py_DECREF(item);
}
argvlist[*argc] = NULL;
return argvlist;
fail:
*argc = i;
free_string_array(argvlist, *argc);
return NULL;
}
#endif
#ifdef HAVE_EXECV
/*[clinic input]
os.execv
path: path_t
Path of executable file.
argv: object
Tuple or list of strings.
/
Execute an executable path with arguments, replacing current process.
[clinic start generated code]*/
static PyObject *
os_execv_impl(PyObject *module, path_t *path, PyObject *argv)
/*[clinic end generated code: output=3b52fec34cd0dafd input=9bac31efae07dac7]*/
{
EXECV_CHAR **argvlist;
Py_ssize_t argc;
/* execv has two arguments: (path, argv), where
argv is a list or tuple of strings. */
if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
PyErr_SetString(PyExc_TypeError,
"execv() arg 2 must be a tuple or list");
return NULL;
}
argc = PySequence_Size(argv);
if (argc < 1) {
PyErr_SetString(PyExc_ValueError, "execv() arg 2 must not be empty");
return NULL;
}
argvlist = parse_arglist(argv, &argc);
if (argvlist == NULL) {
return NULL;
}
if (!argvlist[0][0]) {
PyErr_SetString(PyExc_ValueError,
"execv() arg 2 first element cannot be empty");
free_string_array(argvlist, argc);
return NULL;
}
if (PySys_Audit("os.exec", "OOO", path->object, argv, Py_None) < 0) {
free_string_array(argvlist, argc);
return NULL;
}
_Py_BEGIN_SUPPRESS_IPH
#ifdef HAVE_WEXECV
_wexecv(path->wide, argvlist);
#else
execv(path->narrow, argvlist);
#endif
_Py_END_SUPPRESS_IPH
/* If we get here it's definitely an error */
free_string_array(argvlist, argc);
return posix_error();
}
/*[clinic input]
os.execve
path: path_t(allow_fd='PATH_HAVE_FEXECVE')
Path of executable file.
argv: object
Tuple or list of strings.
env: object
Dictionary of strings mapping to strings.
Execute an executable path with arguments, replacing current process.
[clinic start generated code]*/
static PyObject *
os_execve_impl(PyObject *module, path_t *path, PyObject *argv, PyObject *env)
/*[clinic end generated code: output=ff9fa8e4da8bde58 input=626804fa092606d9]*/
{
EXECV_CHAR **argvlist = NULL;
EXECV_CHAR **envlist;
Py_ssize_t argc, envc;
/* execve has three arguments: (path, argv, env), where
argv is a list or tuple of strings and env is a dictionary
like posix.environ. */
if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
PyErr_SetString(PyExc_TypeError,
"execve: argv must be a tuple or list");
goto fail_0;
}
argc = PySequence_Size(argv);
if (argc < 1) {
PyErr_SetString(PyExc_ValueError, "execve: argv must not be empty");
return NULL;
}
if (!PyMapping_Check(env)) {
PyErr_SetString(PyExc_TypeError,
"execve: environment must be a mapping object");
goto fail_0;
}
argvlist = parse_arglist(argv, &argc);
if (argvlist == NULL) {
goto fail_0;
}
if (!argvlist[0][0]) {
PyErr_SetString(PyExc_ValueError,
"execve: argv first element cannot be empty");
goto fail_0;
}
envlist = parse_envlist(env, &envc);
if (envlist == NULL)
goto fail_0;
if (PySys_Audit("os.exec", "OOO", path->object, argv, env) < 0) {
goto fail_1;
}
_Py_BEGIN_SUPPRESS_IPH
#ifdef HAVE_FEXECVE
if (path->fd > -1)
fexecve(path->fd, argvlist, envlist);
else
#endif
#ifdef HAVE_WEXECV
_wexecve(path->wide, argvlist, envlist);
#else
execve(path->narrow, argvlist, envlist);
#endif
_Py_END_SUPPRESS_IPH
/* If we get here it's definitely an error */
posix_path_error(path);
fail_1:
free_string_array(envlist, envc);
fail_0:
if (argvlist)
free_string_array(argvlist, argc);
return NULL;
}
#endif /* HAVE_EXECV */
#ifdef HAVE_POSIX_SPAWN
enum posix_spawn_file_actions_identifier {
POSIX_SPAWN_OPEN,
POSIX_SPAWN_CLOSE,
POSIX_SPAWN_DUP2
};
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
static int
convert_sched_param(PyObject *module, PyObject *param, struct sched_param *res);
#endif
static int
parse_posix_spawn_flags(PyObject *module, const char *func_name, PyObject *setpgroup,
int resetids, int setsid, PyObject *setsigmask,
PyObject *setsigdef, PyObject *scheduler,
posix_spawnattr_t *attrp)
{
long all_flags = 0;
errno = posix_spawnattr_init(attrp);
if (errno) {
posix_error();
return -1;
}
if (setpgroup) {
pid_t pgid = PyLong_AsPid(setpgroup);
if (pgid == (pid_t)-1 && PyErr_Occurred()) {
goto fail;
}
errno = posix_spawnattr_setpgroup(attrp, pgid);
if (errno) {
posix_error();
goto fail;
}
all_flags |= POSIX_SPAWN_SETPGROUP;
}
if (resetids) {
all_flags |= POSIX_SPAWN_RESETIDS;
}
if (setsid) {
#ifdef HAVE_POSIX_SPAWN_SETSID_RUNTIME
if (HAVE_POSIX_SPAWN_SETSID_RUNTIME) {
#endif
#ifdef POSIX_SPAWN_SETSID
all_flags |= POSIX_SPAWN_SETSID;
#elif defined(POSIX_SPAWN_SETSID_NP)
all_flags |= POSIX_SPAWN_SETSID_NP;
#else
argument_unavailable_error(func_name, "setsid");
return -1;
#endif
#ifdef HAVE_POSIX_SPAWN_SETSID_RUNTIME
} else {
argument_unavailable_error(func_name, "setsid");
return -1;
}
#endif /* HAVE_POSIX_SPAWN_SETSID_RUNTIME */
}
#ifdef HAVE_SIGSET_T
if (setsigmask) {
sigset_t set;
if (!_Py_Sigset_Converter(setsigmask, &set)) {
goto fail;
}
errno = posix_spawnattr_setsigmask(attrp, &set);
if (errno) {
posix_error();
goto fail;
}
all_flags |= POSIX_SPAWN_SETSIGMASK;
}
if (setsigdef) {
sigset_t set;
if (!_Py_Sigset_Converter(setsigdef, &set)) {
goto fail;
}
errno = posix_spawnattr_setsigdefault(attrp, &set);
if (errno) {
posix_error();
goto fail;
}
all_flags |= POSIX_SPAWN_SETSIGDEF;
}
#else
if (setsigmask || setsigdef) {
PyErr_SetString(PyExc_NotImplementedError,
"sigset is not supported on this platform");
goto fail;
}
#endif
if (scheduler) {
#ifdef POSIX_SPAWN_SETSCHEDULER
PyObject *py_schedpolicy;
PyObject *schedparam_obj;
struct sched_param schedparam;
if (!PyArg_ParseTuple(scheduler, "OO"
";A scheduler tuple must have two elements",
&py_schedpolicy, &schedparam_obj)) {
goto fail;
}
if (!convert_sched_param(module, schedparam_obj, &schedparam)) {
goto fail;
}
if (py_schedpolicy != Py_None) {
int schedpolicy = _PyLong_AsInt(py_schedpolicy);
if (schedpolicy == -1 && PyErr_Occurred()) {
goto fail;
}
errno = posix_spawnattr_setschedpolicy(attrp, schedpolicy);
if (errno) {
posix_error();
goto fail;
}
all_flags |= POSIX_SPAWN_SETSCHEDULER;
}
errno = posix_spawnattr_setschedparam(attrp, &schedparam);
if (errno) {
posix_error();
goto fail;
}
all_flags |= POSIX_SPAWN_SETSCHEDPARAM;
#else
PyErr_SetString(PyExc_NotImplementedError,
"The scheduler option is not supported in this system.");
goto fail;
#endif
}
errno = posix_spawnattr_setflags(attrp, all_flags);
if (errno) {
posix_error();
goto fail;
}
return 0;
fail:
(void)posix_spawnattr_destroy(attrp);
return -1;
}
static int
parse_file_actions(PyObject *file_actions,
posix_spawn_file_actions_t *file_actionsp,
PyObject *temp_buffer)
{
PyObject *seq;
PyObject *file_action = NULL;
PyObject *tag_obj;
seq = PySequence_Fast(file_actions,
"file_actions must be a sequence or None");
if (seq == NULL) {
return -1;
}
errno = posix_spawn_file_actions_init(file_actionsp);
if (errno) {
posix_error();
Py_DECREF(seq);
return -1;
}
for (Py_ssize_t i = 0; i < PySequence_Fast_GET_SIZE(seq); ++i) {
file_action = PySequence_Fast_GET_ITEM(seq, i);
Py_INCREF(file_action);
if (!PyTuple_Check(file_action) || !PyTuple_GET_SIZE(file_action)) {
PyErr_SetString(PyExc_TypeError,
"Each file_actions element must be a non-empty tuple");
goto fail;
}
long tag = PyLong_AsLong(PyTuple_GET_ITEM(file_action, 0));
if (tag == -1 && PyErr_Occurred()) {
goto fail;
}
/* Populate the file_actions object */
switch (tag) {
case POSIX_SPAWN_OPEN: {
int fd, oflag;
PyObject *path;
unsigned long mode;
if (!PyArg_ParseTuple(file_action, "OiO&ik"
";A open file_action tuple must have 5 elements",
&tag_obj, &fd, PyUnicode_FSConverter, &path,
&oflag, &mode))
{
goto fail;
}
if (PyList_Append(temp_buffer, path)) {
Py_DECREF(path);
goto fail;
}
errno = posix_spawn_file_actions_addopen(file_actionsp,
fd, PyBytes_AS_STRING(path), oflag, (mode_t)mode);
Py_DECREF(path);
if (errno) {
posix_error();
goto fail;
}
break;
}
case POSIX_SPAWN_CLOSE: {
int fd;
if (!PyArg_ParseTuple(file_action, "Oi"
";A close file_action tuple must have 2 elements",
&tag_obj, &fd))
{
goto fail;
}
errno = posix_spawn_file_actions_addclose(file_actionsp, fd);
if (errno) {
posix_error();
goto fail;
}
break;
}
case POSIX_SPAWN_DUP2: {
int fd1, fd2;
if (!PyArg_ParseTuple(file_action, "Oii"
";A dup2 file_action tuple must have 3 elements",
&tag_obj, &fd1, &fd2))
{
goto fail;
}
errno = posix_spawn_file_actions_adddup2(file_actionsp,
fd1, fd2);
if (errno) {
posix_error();
goto fail;
}
break;
}
default: {
PyErr_SetString(PyExc_TypeError,
"Unknown file_actions identifier");
goto fail;
}
}
Py_DECREF(file_action);
}
Py_DECREF(seq);
return 0;
fail:
Py_DECREF(seq);
Py_DECREF(file_action);
(void)posix_spawn_file_actions_destroy(file_actionsp);
return -1;
}
static PyObject *
py_posix_spawn(int use_posix_spawnp, PyObject *module, path_t *path, PyObject *argv,
PyObject *env, PyObject *file_actions,
PyObject *setpgroup, int resetids, int setsid, PyObject *setsigmask,
PyObject *setsigdef, PyObject *scheduler)
{
const char *func_name = use_posix_spawnp ? "posix_spawnp" : "posix_spawn";
EXECV_CHAR **argvlist = NULL;
EXECV_CHAR **envlist = NULL;
posix_spawn_file_actions_t file_actions_buf;
posix_spawn_file_actions_t *file_actionsp = NULL;
posix_spawnattr_t attr;
posix_spawnattr_t *attrp = NULL;
Py_ssize_t argc, envc;
PyObject *result = NULL;
PyObject *temp_buffer = NULL;
pid_t pid;
int err_code;
/* posix_spawn and posix_spawnp have three arguments: (path, argv, env), where
argv is a list or tuple of strings and env is a dictionary
like posix.environ. */
if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
PyErr_Format(PyExc_TypeError,
"%s: argv must be a tuple or list", func_name);
goto exit;
}
argc = PySequence_Size(argv);
if (argc < 1) {
PyErr_Format(PyExc_ValueError,
"%s: argv must not be empty", func_name);
return NULL;
}
if (!PyMapping_Check(env)) {
PyErr_Format(PyExc_TypeError,
"%s: environment must be a mapping object", func_name);
goto exit;
}
argvlist = parse_arglist(argv, &argc);
if (argvlist == NULL) {
goto exit;
}
if (!argvlist[0][0]) {
PyErr_Format(PyExc_ValueError,
"%s: argv first element cannot be empty", func_name);
goto exit;
}
envlist = parse_envlist(env, &envc);
if (envlist == NULL) {
goto exit;
}
if (file_actions != NULL && file_actions != Py_None) {
/* There is a bug in old versions of glibc that makes some of the
* helper functions for manipulating file actions not copy the provided
* buffers. The problem is that posix_spawn_file_actions_addopen does not
* copy the value of path for some old versions of glibc (<2.20).
* The use of temp_buffer here is a workaround that keeps the
* python objects that own the buffers alive until posix_spawn gets called.
* Check https://bugs.python.org/issue33630 and
* https://sourceware.org/bugzilla/show_bug.cgi?id=17048 for more info.*/
temp_buffer = PyList_New(0);
if (!temp_buffer) {
goto exit;
}
if (parse_file_actions(file_actions, &file_actions_buf, temp_buffer)) {
goto exit;
}
file_actionsp = &file_actions_buf;
}
if (parse_posix_spawn_flags(module, func_name, setpgroup, resetids, setsid,
setsigmask, setsigdef, scheduler, &attr)) {
goto exit;
}
attrp = &attr;
if (PySys_Audit("os.posix_spawn", "OOO", path->object, argv, env) < 0) {
goto exit;
}
_Py_BEGIN_SUPPRESS_IPH
#ifdef HAVE_POSIX_SPAWNP
if (use_posix_spawnp) {
err_code = posix_spawnp(&pid, path->narrow,
file_actionsp, attrp, argvlist, envlist);
}
else
#endif /* HAVE_POSIX_SPAWNP */
{
err_code = posix_spawn(&pid, path->narrow,
file_actionsp, attrp, argvlist, envlist);
}
_Py_END_SUPPRESS_IPH
if (err_code) {
errno = err_code;
PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, path->object);
goto exit;
}
#ifdef _Py_MEMORY_SANITIZER
__msan_unpoison(&pid, sizeof(pid));
#endif
result = PyLong_FromPid(pid);
exit:
if (file_actionsp) {
(void)posix_spawn_file_actions_destroy(file_actionsp);
}
if (attrp) {
(void)posix_spawnattr_destroy(attrp);
}
if (envlist) {
free_string_array(envlist, envc);
}
if (argvlist) {
free_string_array(argvlist, argc);
}
Py_XDECREF(temp_buffer);
return result;
}
/*[clinic input]
os.posix_spawn
path: path_t
Path of executable file.
argv: object
Tuple or list of strings.
env: object
Dictionary of strings mapping to strings.
/
*
file_actions: object(c_default='NULL') = ()
A sequence of file action tuples.
setpgroup: object = NULL
The pgroup to use with the POSIX_SPAWN_SETPGROUP flag.
resetids: bool(accept={int}) = False
If the value is `true` the POSIX_SPAWN_RESETIDS will be activated.
setsid: bool(accept={int}) = False
If the value is `true` the POSIX_SPAWN_SETSID or POSIX_SPAWN_SETSID_NP will be activated.
setsigmask: object(c_default='NULL') = ()
The sigmask to use with the POSIX_SPAWN_SETSIGMASK flag.
setsigdef: object(c_default='NULL') = ()
The sigmask to use with the POSIX_SPAWN_SETSIGDEF flag.
scheduler: object = NULL
A tuple with the scheduler policy (optional) and parameters.
Execute the program specified by path in a new process.
[clinic start generated code]*/
static PyObject *
os_posix_spawn_impl(PyObject *module, path_t *path, PyObject *argv,
PyObject *env, PyObject *file_actions,
PyObject *setpgroup, int resetids, int setsid,
PyObject *setsigmask, PyObject *setsigdef,
PyObject *scheduler)
/*[clinic end generated code: output=14a1098c566bc675 input=8c6305619a00ad04]*/
{
return py_posix_spawn(0, module, path, argv, env, file_actions,
setpgroup, resetids, setsid, setsigmask, setsigdef,
scheduler);
}
#endif /* HAVE_POSIX_SPAWN */
#ifdef HAVE_POSIX_SPAWNP
/*[clinic input]
os.posix_spawnp
path: path_t
Path of executable file.
argv: object
Tuple or list of strings.
env: object
Dictionary of strings mapping to strings.
/
*
file_actions: object(c_default='NULL') = ()
A sequence of file action tuples.
setpgroup: object = NULL
The pgroup to use with the POSIX_SPAWN_SETPGROUP flag.
resetids: bool(accept={int}) = False
If the value is `True` the POSIX_SPAWN_RESETIDS will be activated.
setsid: bool(accept={int}) = False
If the value is `True` the POSIX_SPAWN_SETSID or POSIX_SPAWN_SETSID_NP will be activated.
setsigmask: object(c_default='NULL') = ()
The sigmask to use with the POSIX_SPAWN_SETSIGMASK flag.
setsigdef: object(c_default='NULL') = ()
The sigmask to use with the POSIX_SPAWN_SETSIGDEF flag.
scheduler: object = NULL
A tuple with the scheduler policy (optional) and parameters.
Execute the program specified by path in a new process.
[clinic start generated code]*/
static PyObject *
os_posix_spawnp_impl(PyObject *module, path_t *path, PyObject *argv,
PyObject *env, PyObject *file_actions,
PyObject *setpgroup, int resetids, int setsid,
PyObject *setsigmask, PyObject *setsigdef,
PyObject *scheduler)
/*[clinic end generated code: output=7b9aaefe3031238d input=c1911043a22028da]*/
{
return py_posix_spawn(1, module, path, argv, env, file_actions,
setpgroup, resetids, setsid, setsigmask, setsigdef,
scheduler);
}
#endif /* HAVE_POSIX_SPAWNP */
#ifdef HAVE_RTPSPAWN
static intptr_t
_rtp_spawn(int mode, const char *rtpFileName, const char *argv[],
const char *envp[])
{
RTP_ID rtpid;
int status;
pid_t res;
int async_err = 0;
/* Set priority=100 and uStackSize=16 MiB (0x1000000) for new processes.
uStackSize=0 cannot be used, the default stack size is too small for
Python. */
if (envp) {
rtpid = rtpSpawn(rtpFileName, argv, envp,
100, 0x1000000, 0, VX_FP_TASK);
}
else {
rtpid = rtpSpawn(rtpFileName, argv, (const char **)environ,
100, 0x1000000, 0, VX_FP_TASK);
}
if ((rtpid != RTP_ID_ERROR) && (mode == _P_WAIT)) {
do {
res = waitpid((pid_t)rtpid, &status, 0);
} while (res < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res < 0)
return RTP_ID_ERROR;
return ((intptr_t)status);
}
return ((intptr_t)rtpid);
}
#endif
#if defined(HAVE_SPAWNV) || defined(HAVE_WSPAWNV) || defined(HAVE_RTPSPAWN)
/*[clinic input]
os.spawnv
mode: int
Mode of process creation.
path: path_t
Path of executable file.
argv: object
Tuple or list of strings.
/
Execute the program specified by path in a new process.
[clinic start generated code]*/
static PyObject *
os_spawnv_impl(PyObject *module, int mode, path_t *path, PyObject *argv)
/*[clinic end generated code: output=71cd037a9d96b816 input=43224242303291be]*/
{
EXECV_CHAR **argvlist;
int i;
Py_ssize_t argc;
intptr_t spawnval;
PyObject *(*getitem)(PyObject *, Py_ssize_t);
/* spawnv has three arguments: (mode, path, argv), where
argv is a list or tuple of strings. */
if (PyList_Check(argv)) {
argc = PyList_Size(argv);
getitem = PyList_GetItem;
}
else if (PyTuple_Check(argv)) {
argc = PyTuple_Size(argv);
getitem = PyTuple_GetItem;
}
else {
PyErr_SetString(PyExc_TypeError,
"spawnv() arg 2 must be a tuple or list");
return NULL;
}
if (argc == 0) {
PyErr_SetString(PyExc_ValueError,
"spawnv() arg 2 cannot be empty");
return NULL;
}
argvlist = PyMem_NEW(EXECV_CHAR *, argc+1);
if (argvlist == NULL) {
return PyErr_NoMemory();
}
for (i = 0; i < argc; i++) {
if (!fsconvert_strdup((*getitem)(argv, i),
&argvlist[i])) {
free_string_array(argvlist, i);
PyErr_SetString(
PyExc_TypeError,
"spawnv() arg 2 must contain only strings");
return NULL;
}
if (i == 0 && !argvlist[0][0]) {
free_string_array(argvlist, i + 1);
PyErr_SetString(
PyExc_ValueError,
"spawnv() arg 2 first element cannot be empty");
return NULL;
}
}
argvlist[argc] = NULL;
#if !defined(HAVE_RTPSPAWN)
if (mode == _OLD_P_OVERLAY)
mode = _P_OVERLAY;
#endif
if (PySys_Audit("os.spawn", "iOOO", mode, path->object, argv,
Py_None) < 0) {
free_string_array(argvlist, argc);
return NULL;
}
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
#ifdef HAVE_WSPAWNV
spawnval = _wspawnv(mode, path->wide, argvlist);
#elif defined(HAVE_RTPSPAWN)
spawnval = _rtp_spawn(mode, path->narrow, (const char **)argvlist, NULL);
#else
spawnval = _spawnv(mode, path->narrow, argvlist);
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
free_string_array(argvlist, argc);
if (spawnval == -1)
return posix_error();
else
return Py_BuildValue(_Py_PARSE_INTPTR, spawnval);
}
/*[clinic input]
os.spawnve
mode: int
Mode of process creation.
path: path_t
Path of executable file.
argv: object
Tuple or list of strings.
env: object
Dictionary of strings mapping to strings.
/
Execute the program specified by path in a new process.
[clinic start generated code]*/
static PyObject *
os_spawnve_impl(PyObject *module, int mode, path_t *path, PyObject *argv,
PyObject *env)
/*[clinic end generated code: output=30fe85be56fe37ad input=3e40803ee7c4c586]*/
{
EXECV_CHAR **argvlist;
EXECV_CHAR **envlist;
PyObject *res = NULL;
Py_ssize_t argc, i, envc;
intptr_t spawnval;
PyObject *(*getitem)(PyObject *, Py_ssize_t);
Py_ssize_t lastarg = 0;
/* spawnve has four arguments: (mode, path, argv, env), where
argv is a list or tuple of strings and env is a dictionary
like posix.environ. */
if (PyList_Check(argv)) {
argc = PyList_Size(argv);
getitem = PyList_GetItem;
}
else if (PyTuple_Check(argv)) {
argc = PyTuple_Size(argv);
getitem = PyTuple_GetItem;
}
else {
PyErr_SetString(PyExc_TypeError,
"spawnve() arg 2 must be a tuple or list");
goto fail_0;
}
if (argc == 0) {
PyErr_SetString(PyExc_ValueError,
"spawnve() arg 2 cannot be empty");
goto fail_0;
}
if (!PyMapping_Check(env)) {
PyErr_SetString(PyExc_TypeError,
"spawnve() arg 3 must be a mapping object");
goto fail_0;
}
argvlist = PyMem_NEW(EXECV_CHAR *, argc+1);
if (argvlist == NULL) {
PyErr_NoMemory();
goto fail_0;
}
for (i = 0; i < argc; i++) {
if (!fsconvert_strdup((*getitem)(argv, i),
&argvlist[i]))
{
lastarg = i;
goto fail_1;
}
if (i == 0 && !argvlist[0][0]) {
lastarg = i + 1;
PyErr_SetString(
PyExc_ValueError,
"spawnv() arg 2 first element cannot be empty");
goto fail_1;
}
}
lastarg = argc;
argvlist[argc] = NULL;
envlist = parse_envlist(env, &envc);
if (envlist == NULL)
goto fail_1;
#if !defined(HAVE_RTPSPAWN)
if (mode == _OLD_P_OVERLAY)
mode = _P_OVERLAY;
#endif
if (PySys_Audit("os.spawn", "iOOO", mode, path->object, argv, env) < 0) {
goto fail_2;
}
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
#ifdef HAVE_WSPAWNV
spawnval = _wspawnve(mode, path->wide, argvlist, envlist);
#elif defined(HAVE_RTPSPAWN)
spawnval = _rtp_spawn(mode, path->narrow, (const char **)argvlist,
(const char **)envlist);
#else
spawnval = _spawnve(mode, path->narrow, argvlist, envlist);
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (spawnval == -1)
(void) posix_error();
else
res = Py_BuildValue(_Py_PARSE_INTPTR, spawnval);
fail_2:
while (--envc >= 0) {
PyMem_Free(envlist[envc]);
}
PyMem_Free(envlist);
fail_1:
free_string_array(argvlist, lastarg);
fail_0:
return res;
}
#endif /* HAVE_SPAWNV */
#ifdef HAVE_FORK
/* Helper function to validate arguments.
Returns 0 on success. non-zero on failure with a TypeError raised.
If obj is non-NULL it must be callable. */
static int
check_null_or_callable(PyObject *obj, const char* obj_name)
{
if (obj && !PyCallable_Check(obj)) {
PyErr_Format(PyExc_TypeError, "'%s' must be callable, not %s",
obj_name, _PyType_Name(Py_TYPE(obj)));
return -1;
}
return 0;
}
/*[clinic input]
os.register_at_fork
*
before: object=NULL
A callable to be called in the parent before the fork() syscall.
after_in_child: object=NULL
A callable to be called in the child after fork().
after_in_parent: object=NULL
A callable to be called in the parent after fork().
Register callables to be called when forking a new process.
'before' callbacks are called in reverse order.
'after_in_child' and 'after_in_parent' callbacks are called in order.
[clinic start generated code]*/
static PyObject *
os_register_at_fork_impl(PyObject *module, PyObject *before,
PyObject *after_in_child, PyObject *after_in_parent)
/*[clinic end generated code: output=5398ac75e8e97625 input=cd1187aa85d2312e]*/
{
PyInterpreterState *interp;
if (!before && !after_in_child && !after_in_parent) {
PyErr_SetString(PyExc_TypeError, "At least one argument is required.");
return NULL;
}
if (check_null_or_callable(before, "before") ||
check_null_or_callable(after_in_child, "after_in_child") ||
check_null_or_callable(after_in_parent, "after_in_parent")) {
return NULL;
}
interp = _PyInterpreterState_GET();
if (register_at_forker(&interp->before_forkers, before)) {
return NULL;
}
if (register_at_forker(&interp->after_forkers_child, after_in_child)) {
return NULL;
}
if (register_at_forker(&interp->after_forkers_parent, after_in_parent)) {
return NULL;
}
Py_RETURN_NONE;
}
#endif /* HAVE_FORK */
#ifdef HAVE_FORK1
/*[clinic input]
os.fork1
Fork a child process with a single multiplexed (i.e., not bound) thread.
Return 0 to child process and PID of child to parent process.
[clinic start generated code]*/
static PyObject *
os_fork1_impl(PyObject *module)
/*[clinic end generated code: output=0de8e67ce2a310bc input=12db02167893926e]*/
{
pid_t pid;
if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
PyErr_SetString(PyExc_RuntimeError, "fork not supported for subinterpreters");
return NULL;
}
PyOS_BeforeFork();
pid = fork1();
if (pid == 0) {
/* child: this clobbers and resets the import lock. */
PyOS_AfterFork_Child();
} else {
/* parent: release the import lock. */
PyOS_AfterFork_Parent();
}
if (pid == -1)
return posix_error();
return PyLong_FromPid(pid);
}
#endif /* HAVE_FORK1 */
#ifdef HAVE_FORK
/*[clinic input]
os.fork
Fork a child process.
Return 0 to child process and PID of child to parent process.
[clinic start generated code]*/
static PyObject *
os_fork_impl(PyObject *module)
/*[clinic end generated code: output=3626c81f98985d49 input=13c956413110eeaa]*/
{
pid_t pid;
PyInterpreterState *interp = _PyInterpreterState_GET();
if (interp->config._isolated_interpreter) {
PyErr_SetString(PyExc_RuntimeError,
"fork not supported for isolated subinterpreters");
return NULL;
}
if (PySys_Audit("os.fork", NULL) < 0) {
return NULL;
}
PyOS_BeforeFork();
pid = fork();
if (pid == 0) {
/* child: this clobbers and resets the import lock. */
PyOS_AfterFork_Child();
} else {
/* parent: release the import lock. */
PyOS_AfterFork_Parent();
}
if (pid == -1)
return posix_error();
return PyLong_FromPid(pid);
}
#endif /* HAVE_FORK */
#ifdef HAVE_SCHED_H
#ifdef HAVE_SCHED_GET_PRIORITY_MAX
/*[clinic input]
os.sched_get_priority_max
policy: int
Get the maximum scheduling priority for policy.
[clinic start generated code]*/
static PyObject *
os_sched_get_priority_max_impl(PyObject *module, int policy)
/*[clinic end generated code: output=9e465c6e43130521 input=2097b7998eca6874]*/
{
int max;
max = sched_get_priority_max(policy);
if (max < 0)
return posix_error();
return PyLong_FromLong(max);
}
/*[clinic input]
os.sched_get_priority_min
policy: int
Get the minimum scheduling priority for policy.
[clinic start generated code]*/
static PyObject *
os_sched_get_priority_min_impl(PyObject *module, int policy)
/*[clinic end generated code: output=7595c1138cc47a6d input=21bc8fa0d70983bf]*/
{
int min = sched_get_priority_min(policy);
if (min < 0)
return posix_error();
return PyLong_FromLong(min);
}
#endif /* HAVE_SCHED_GET_PRIORITY_MAX */
#ifdef HAVE_SCHED_SETSCHEDULER
/*[clinic input]
os.sched_getscheduler
pid: pid_t
/
Get the scheduling policy for the process identified by pid.
Passing 0 for pid returns the scheduling policy for the calling process.
[clinic start generated code]*/
static PyObject *
os_sched_getscheduler_impl(PyObject *module, pid_t pid)
/*[clinic end generated code: output=dce4c0bd3f1b34c8 input=8d99dac505485ac8]*/
{
int policy;
policy = sched_getscheduler(pid);
if (policy < 0)
return posix_error();
return PyLong_FromLong(policy);
}
#endif /* HAVE_SCHED_SETSCHEDULER */
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
/*[clinic input]
class os.sched_param "PyObject *" "SchedParamType"
@classmethod
os.sched_param.__new__
sched_priority: object
A scheduling parameter.
Currently has only one field: sched_priority
[clinic start generated code]*/
static PyObject *
os_sched_param_impl(PyTypeObject *type, PyObject *sched_priority)
/*[clinic end generated code: output=48f4067d60f48c13 input=eb42909a2c0e3e6c]*/
{
PyObject *res;
res = PyStructSequence_New(type);
if (!res)
return NULL;
Py_INCREF(sched_priority);
PyStructSequence_SET_ITEM(res, 0, sched_priority);
return res;
}
PyDoc_VAR(os_sched_param__doc__);
static PyStructSequence_Field sched_param_fields[] = {
{"sched_priority", "the scheduling priority"},
{0}
};
static PyStructSequence_Desc sched_param_desc = {
"sched_param", /* name */
os_sched_param__doc__, /* doc */
sched_param_fields,
1
};
static int
convert_sched_param(PyObject *module, PyObject *param, struct sched_param *res)
{
long priority;
if (!Py_IS_TYPE(param, (PyTypeObject *)get_posix_state(module)->SchedParamType)) {
PyErr_SetString(PyExc_TypeError, "must have a sched_param object");
return 0;
}
priority = PyLong_AsLong(PyStructSequence_GET_ITEM(param, 0));
if (priority == -1 && PyErr_Occurred())
return 0;
if (priority > INT_MAX || priority < INT_MIN) {
PyErr_SetString(PyExc_OverflowError, "sched_priority out of range");
return 0;
}
res->sched_priority = Py_SAFE_DOWNCAST(priority, long, int);
return 1;
}
#endif /* defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM) */
#ifdef HAVE_SCHED_SETSCHEDULER
/*[clinic input]
os.sched_setscheduler
pid: pid_t
policy: int
param as param_obj: object
/
Set the scheduling policy for the process identified by pid.
If pid is 0, the calling process is changed.
param is an instance of sched_param.
[clinic start generated code]*/
static PyObject *
os_sched_setscheduler_impl(PyObject *module, pid_t pid, int policy,
PyObject *param_obj)
/*[clinic end generated code: output=cde27faa55dc993e input=73013d731bd8fbe9]*/
{
struct sched_param param;
if (!convert_sched_param(module, param_obj, &param)) {
return NULL;
}
/*
** sched_setscheduler() returns 0 in Linux, but the previous
** scheduling policy under Solaris/Illumos, and others.
** On error, -1 is returned in all Operating Systems.
*/
if (sched_setscheduler(pid, policy, &param) == -1)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SCHED_SETSCHEDULER*/
#ifdef HAVE_SCHED_SETPARAM
/*[clinic input]
os.sched_getparam
pid: pid_t
/
Returns scheduling parameters for the process identified by pid.
If pid is 0, returns parameters for the calling process.
Return value is an instance of sched_param.
[clinic start generated code]*/
static PyObject *
os_sched_getparam_impl(PyObject *module, pid_t pid)
/*[clinic end generated code: output=b194e8708dcf2db8 input=18a1ef9c2efae296]*/
{
struct sched_param param;
PyObject *result;
PyObject *priority;
if (sched_getparam(pid, &param))
return posix_error();
PyObject *SchedParamType = get_posix_state(module)->SchedParamType;
result = PyStructSequence_New((PyTypeObject *)SchedParamType);
if (!result)
return NULL;
priority = PyLong_FromLong(param.sched_priority);
if (!priority) {
Py_DECREF(result);
return NULL;
}
PyStructSequence_SET_ITEM(result, 0, priority);
return result;
}
/*[clinic input]
os.sched_setparam
pid: pid_t
param as param_obj: object
/
Set scheduling parameters for the process identified by pid.
If pid is 0, sets parameters for the calling process.
param should be an instance of sched_param.
[clinic start generated code]*/
static PyObject *
os_sched_setparam_impl(PyObject *module, pid_t pid, PyObject *param_obj)
/*[clinic end generated code: output=f19fe020a53741c1 input=27b98337c8b2dcc7]*/
{
struct sched_param param;
if (!convert_sched_param(module, param_obj, &param)) {
return NULL;
}
if (sched_setparam(pid, &param))
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SCHED_SETPARAM */
#ifdef HAVE_SCHED_RR_GET_INTERVAL
/*[clinic input]
os.sched_rr_get_interval -> double
pid: pid_t
/
Return the round-robin quantum for the process identified by pid, in seconds.
Value returned is a float.
[clinic start generated code]*/
static double
os_sched_rr_get_interval_impl(PyObject *module, pid_t pid)
/*[clinic end generated code: output=7e2d935833ab47dc input=2a973da15cca6fae]*/
{
struct timespec interval;
if (sched_rr_get_interval(pid, &interval)) {
posix_error();
return -1.0;
}
#ifdef _Py_MEMORY_SANITIZER
__msan_unpoison(&interval, sizeof(interval));
#endif
return (double)interval.tv_sec + 1e-9*interval.tv_nsec;
}
#endif /* HAVE_SCHED_RR_GET_INTERVAL */
/*[clinic input]
os.sched_yield
Voluntarily relinquish the CPU.
[clinic start generated code]*/
static PyObject *
os_sched_yield_impl(PyObject *module)
/*[clinic end generated code: output=902323500f222cac input=e54d6f98189391d4]*/
{
if (sched_yield())
return posix_error();
Py_RETURN_NONE;
}
#ifdef HAVE_SCHED_SETAFFINITY
/* The minimum number of CPUs allocated in a cpu_set_t */
static const int NCPUS_START = sizeof(unsigned long) * CHAR_BIT;
/*[clinic input]
os.sched_setaffinity
pid: pid_t
mask : object
/
Set the CPU affinity of the process identified by pid to mask.
mask should be an iterable of integers identifying CPUs.
[clinic start generated code]*/
static PyObject *
os_sched_setaffinity_impl(PyObject *module, pid_t pid, PyObject *mask)
/*[clinic end generated code: output=882d7dd9a229335b input=a0791a597c7085ba]*/
{
int ncpus;
size_t setsize;
cpu_set_t *cpu_set = NULL;
PyObject *iterator = NULL, *item;
iterator = PyObject_GetIter(mask);
if (iterator == NULL)
return NULL;
ncpus = NCPUS_START;
setsize = CPU_ALLOC_SIZE(ncpus);
cpu_set = CPU_ALLOC(ncpus);
if (cpu_set == NULL) {
PyErr_NoMemory();
goto error;
}
CPU_ZERO_S(setsize, cpu_set);
while ((item = PyIter_Next(iterator))) {
long cpu;
if (!PyLong_Check(item)) {
PyErr_Format(PyExc_TypeError,
"expected an iterator of ints, "
"but iterator yielded %R",
Py_TYPE(item));
Py_DECREF(item);
goto error;
}
cpu = PyLong_AsLong(item);
Py_DECREF(item);
if (cpu < 0) {
if (!PyErr_Occurred())
PyErr_SetString(PyExc_ValueError, "negative CPU number");
goto error;
}
if (cpu > INT_MAX - 1) {
PyErr_SetString(PyExc_OverflowError, "CPU number too large");
goto error;
}
if (cpu >= ncpus) {
/* Grow CPU mask to fit the CPU number */
int newncpus = ncpus;
cpu_set_t *newmask;
size_t newsetsize;
while (newncpus <= cpu) {
if (newncpus > INT_MAX / 2)
newncpus = cpu + 1;
else
newncpus = newncpus * 2;
}
newmask = CPU_ALLOC(newncpus);
if (newmask == NULL) {
PyErr_NoMemory();
goto error;
}
newsetsize = CPU_ALLOC_SIZE(newncpus);
CPU_ZERO_S(newsetsize, newmask);
memcpy(newmask, cpu_set, setsize);
CPU_FREE(cpu_set);
setsize = newsetsize;
cpu_set = newmask;
ncpus = newncpus;
}
CPU_SET_S(cpu, setsize, cpu_set);
}
if (PyErr_Occurred()) {
goto error;
}
Py_CLEAR(iterator);
if (sched_setaffinity(pid, setsize, cpu_set)) {
posix_error();
goto error;
}
CPU_FREE(cpu_set);
Py_RETURN_NONE;
error:
if (cpu_set)
CPU_FREE(cpu_set);
Py_XDECREF(iterator);
return NULL;
}
/*[clinic input]
os.sched_getaffinity
pid: pid_t
/
Return the affinity of the process identified by pid (or the current process if zero).
The affinity is returned as a set of CPU identifiers.
[clinic start generated code]*/
static PyObject *
os_sched_getaffinity_impl(PyObject *module, pid_t pid)
/*[clinic end generated code: output=f726f2c193c17a4f input=983ce7cb4a565980]*/
{
int cpu, ncpus, count;
size_t setsize;
cpu_set_t *mask = NULL;
PyObject *res = NULL;
ncpus = NCPUS_START;
while (1) {
setsize = CPU_ALLOC_SIZE(ncpus);
mask = CPU_ALLOC(ncpus);
if (mask == NULL)
return PyErr_NoMemory();
if (sched_getaffinity(pid, setsize, mask) == 0)
break;
CPU_FREE(mask);
if (errno != EINVAL)
return posix_error();
if (ncpus > INT_MAX / 2) {
PyErr_SetString(PyExc_OverflowError, "could not allocate "
"a large enough CPU set");
return NULL;
}
ncpus = ncpus * 2;
}
res = PySet_New(NULL);
if (res == NULL)
goto error;
for (cpu = 0, count = CPU_COUNT_S(setsize, mask); count; cpu++) {
if (CPU_ISSET_S(cpu, setsize, mask)) {
PyObject *cpu_num = PyLong_FromLong(cpu);
--count;
if (cpu_num == NULL)
goto error;
if (PySet_Add(res, cpu_num)) {
Py_DECREF(cpu_num);
goto error;
}
Py_DECREF(cpu_num);
}
}
CPU_FREE(mask);
return res;
error:
if (mask)
CPU_FREE(mask);
Py_XDECREF(res);
return NULL;
}
#endif /* HAVE_SCHED_SETAFFINITY */
#endif /* HAVE_SCHED_H */
/* AIX uses /dev/ptc but is otherwise the same as /dev/ptmx */
#if defined(HAVE_DEV_PTC) && !defined(HAVE_DEV_PTMX)
# define DEV_PTY_FILE "/dev/ptc"
# define HAVE_DEV_PTMX
#else
# define DEV_PTY_FILE "/dev/ptmx"
#endif
#if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) || defined(HAVE_LOGIN_TTY) || defined(HAVE_DEV_PTMX)
#ifdef HAVE_PTY_H
#include <pty.h>
#ifdef HAVE_UTMP_H
#include <utmp.h>
#endif /* HAVE_UTMP_H */
#elif defined(HAVE_LIBUTIL_H)
#include <libutil.h>
#elif defined(HAVE_UTIL_H)
#include <util.h>
#endif /* HAVE_PTY_H */
#ifdef HAVE_STROPTS_H
#include <stropts.h>
#endif
#endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) || defined(HAVE_LOGIN_TTY) || defined(HAVE_DEV_PTMX) */
#if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(HAVE_DEV_PTMX)
/*[clinic input]
os.openpty
Open a pseudo-terminal.
Return a tuple of (master_fd, slave_fd) containing open file descriptors
for both the master and slave ends.
[clinic start generated code]*/
static PyObject *
os_openpty_impl(PyObject *module)
/*[clinic end generated code: output=98841ce5ec9cef3c input=f3d99fd99e762907]*/
{
int master_fd = -1, slave_fd = -1;
#ifndef HAVE_OPENPTY
char * slave_name;
#endif
#if defined(HAVE_DEV_PTMX) && !defined(HAVE_OPENPTY) && !defined(HAVE__GETPTY)
PyOS_sighandler_t sig_saved;
#if defined(__sun) && defined(__SVR4)
extern char *ptsname(int fildes);
#endif
#endif
#ifdef HAVE_OPENPTY
if (openpty(&master_fd, &slave_fd, NULL, NULL, NULL) != 0)
goto posix_error;
if (_Py_set_inheritable(master_fd, 0, NULL) < 0)
goto error;
if (_Py_set_inheritable(slave_fd, 0, NULL) < 0)
goto error;
#elif defined(HAVE__GETPTY)
slave_name = _getpty(&master_fd, O_RDWR, 0666, 0);
if (slave_name == NULL)
goto posix_error;
if (_Py_set_inheritable(master_fd, 0, NULL) < 0)
goto error;
slave_fd = _Py_open(slave_name, O_RDWR);
if (slave_fd < 0)
goto error;
#else
master_fd = open(DEV_PTY_FILE, O_RDWR | O_NOCTTY); /* open master */
if (master_fd < 0)
goto posix_error;
sig_saved = PyOS_setsig(SIGCHLD, SIG_DFL);
/* change permission of slave */
if (grantpt(master_fd) < 0) {
PyOS_setsig(SIGCHLD, sig_saved);
goto posix_error;
}
/* unlock slave */
if (unlockpt(master_fd) < 0) {
PyOS_setsig(SIGCHLD, sig_saved);
goto posix_error;
}
PyOS_setsig(SIGCHLD, sig_saved);
slave_name = ptsname(master_fd); /* get name of slave */
if (slave_name == NULL)
goto posix_error;
slave_fd = _Py_open(slave_name, O_RDWR | O_NOCTTY); /* open slave */
if (slave_fd == -1)
goto error;
if (_Py_set_inheritable(master_fd, 0, NULL) < 0)
goto posix_error;
#if !defined(__CYGWIN__) && !defined(__ANDROID__) && !defined(HAVE_DEV_PTC)
ioctl(slave_fd, I_PUSH, "ptem"); /* push ptem */
ioctl(slave_fd, I_PUSH, "ldterm"); /* push ldterm */
#ifndef __hpux
ioctl(slave_fd, I_PUSH, "ttcompat"); /* push ttcompat */
#endif /* __hpux */
#endif /* HAVE_CYGWIN */
#endif /* HAVE_OPENPTY */
return Py_BuildValue("(ii)", master_fd, slave_fd);
posix_error:
posix_error();
error:
if (master_fd != -1)
close(master_fd);
if (slave_fd != -1)
close(slave_fd);
return NULL;
}
#endif /* defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(HAVE_DEV_PTMX) */
#if defined(HAVE_SETSID) && defined(TIOCSCTTY)
#define HAVE_FALLBACK_LOGIN_TTY 1
#endif /* defined(HAVE_SETSID) && defined(TIOCSCTTY) */
#if defined(HAVE_LOGIN_TTY) || defined(HAVE_FALLBACK_LOGIN_TTY)
/*[clinic input]
os.login_tty
fd: fildes
/
Prepare the tty of which fd is a file descriptor for a new login session.
Make the calling process a session leader; make the tty the
controlling tty, the stdin, the stdout, and the stderr of the
calling process; close fd.
[clinic start generated code]*/
static PyObject *
os_login_tty_impl(PyObject *module, int fd)
/*[clinic end generated code: output=495a79911b4cc1bc input=5f298565099903a2]*/
{
#ifdef HAVE_LOGIN_TTY
if (login_tty(fd) == -1) {
return posix_error();
}
#else /* defined(HAVE_FALLBACK_LOGIN_TTY) */
/* Establish a new session. */
if (setsid() == -1) {
return posix_error();
}
/* The tty becomes the controlling terminal. */
if (ioctl(fd, TIOCSCTTY, (char *)NULL) == -1) {
return posix_error();
}
/* The tty becomes stdin/stdout/stderr */
if (dup2(fd, 0) == -1 || dup2(fd, 1) == -1 || dup2(fd, 2) == -1) {
return posix_error();
}
if (fd > 2) {
close(fd);
}
#endif /* HAVE_LOGIN_TTY */
Py_RETURN_NONE;
}
#endif /* defined(HAVE_LOGIN_TTY) || defined(HAVE_FALLBACK_LOGIN_TTY) */
#ifdef HAVE_FORKPTY
/*[clinic input]
os.forkpty
Fork a new process with a new pseudo-terminal as controlling tty.
Returns a tuple of (pid, master_fd).
Like fork(), return pid of 0 to the child process,
and pid of child to the parent process.
To both, return fd of newly opened pseudo-terminal.
[clinic start generated code]*/
static PyObject *
os_forkpty_impl(PyObject *module)
/*[clinic end generated code: output=60d0a5c7512e4087 input=f1f7f4bae3966010]*/
{
int master_fd = -1;
pid_t pid;
if (!_Py_IsMainInterpreter(_PyInterpreterState_GET())) {
PyErr_SetString(PyExc_RuntimeError, "fork not supported for subinterpreters");
return NULL;
}
if (PySys_Audit("os.forkpty", NULL) < 0) {
return NULL;
}
PyOS_BeforeFork();
pid = forkpty(&master_fd, NULL, NULL, NULL);
if (pid == 0) {
/* child: this clobbers and resets the import lock. */
PyOS_AfterFork_Child();
} else {
/* parent: release the import lock. */
PyOS_AfterFork_Parent();
}
if (pid == -1) {
return posix_error();
}
return Py_BuildValue("(Ni)", PyLong_FromPid(pid), master_fd);
}
#endif /* HAVE_FORKPTY */
#ifdef HAVE_GETEGID
/*[clinic input]
os.getegid
Return the current process's effective group id.
[clinic start generated code]*/
static PyObject *
os_getegid_impl(PyObject *module)
/*[clinic end generated code: output=67d9be7ac68898a2 input=1596f79ad1107d5d]*/
{
return _PyLong_FromGid(getegid());
}
#endif /* HAVE_GETEGID */
#ifdef HAVE_GETEUID
/*[clinic input]
os.geteuid
Return the current process's effective user id.
[clinic start generated code]*/
static PyObject *
os_geteuid_impl(PyObject *module)
/*[clinic end generated code: output=ea1b60f0d6abb66e input=4644c662d3bd9f19]*/
{
return _PyLong_FromUid(geteuid());
}
#endif /* HAVE_GETEUID */
#ifdef HAVE_GETGID
/*[clinic input]
os.getgid
Return the current process's group id.
[clinic start generated code]*/
static PyObject *
os_getgid_impl(PyObject *module)
/*[clinic end generated code: output=4f28ebc9d3e5dfcf input=58796344cd87c0f6]*/
{
return _PyLong_FromGid(getgid());
}
#endif /* HAVE_GETGID */
#ifdef HAVE_GETPID
/*[clinic input]
os.getpid
Return the current process id.
[clinic start generated code]*/
static PyObject *
os_getpid_impl(PyObject *module)
/*[clinic end generated code: output=9ea6fdac01ed2b3c input=5a9a00f0ab68aa00]*/
{
return PyLong_FromPid(getpid());
}
#endif /* HAVE_GETPID */
#ifdef NGROUPS_MAX
#define MAX_GROUPS NGROUPS_MAX
#else
/* defined to be 16 on Solaris7, so this should be a small number */
#define MAX_GROUPS 64
#endif
#ifdef HAVE_GETGROUPLIST
#ifdef __APPLE__
/*[clinic input]
os.getgrouplist
user: str
username to lookup
group as basegid: int
base group id of the user
/
Returns a list of groups to which a user belongs.
[clinic start generated code]*/
static PyObject *
os_getgrouplist_impl(PyObject *module, const char *user, int basegid)
/*[clinic end generated code: output=6e734697b8c26de0 input=f8d870374b09a490]*/
#else
/*[clinic input]
os.getgrouplist
user: str
username to lookup
group as basegid: gid_t
base group id of the user
/
Returns a list of groups to which a user belongs.
[clinic start generated code]*/
static PyObject *
os_getgrouplist_impl(PyObject *module, const char *user, gid_t basegid)
/*[clinic end generated code: output=0ebd7fb70115575b input=cc61d5c20b08958d]*/
#endif
{
int i, ngroups;
PyObject *list;
#ifdef __APPLE__
int *groups;
#else
gid_t *groups;
#endif
/*
* NGROUPS_MAX is defined by POSIX.1 as the maximum
* number of supplimental groups a users can belong to.
* We have to increment it by one because
* getgrouplist() returns both the supplemental groups
* and the primary group, i.e. all of the groups the
* user belongs to.
*/
ngroups = 1 + MAX_GROUPS;
while (1) {
#ifdef __APPLE__
groups = PyMem_New(int, ngroups);
#else
groups = PyMem_New(gid_t, ngroups);
#endif
if (groups == NULL) {
return PyErr_NoMemory();
}
int old_ngroups = ngroups;
if (getgrouplist(user, basegid, groups, &ngroups) != -1) {
/* Success */
break;
}
/* getgrouplist() fails if the group list is too small */
PyMem_Free(groups);
if (ngroups > old_ngroups) {
/* If the group list is too small, the glibc implementation of
getgrouplist() sets ngroups to the total number of groups and
returns -1. */
}
else {
/* Double the group list size */
if (ngroups > INT_MAX / 2) {
return PyErr_NoMemory();
}
ngroups *= 2;
}
/* Retry getgrouplist() with a larger group list */
}
#ifdef _Py_MEMORY_SANITIZER
/* Clang memory sanitizer libc intercepts don't know getgrouplist. */
__msan_unpoison(&ngroups, sizeof(ngroups));
__msan_unpoison(groups, ngroups*sizeof(*groups));
#endif
list = PyList_New(ngroups);
if (list == NULL) {
PyMem_Free(groups);
return NULL;
}
for (i = 0; i < ngroups; i++) {
#ifdef __APPLE__
PyObject *o = PyLong_FromUnsignedLong((unsigned long)groups[i]);
#else
PyObject *o = _PyLong_FromGid(groups[i]);
#endif
if (o == NULL) {
Py_DECREF(list);
PyMem_Free(groups);
return NULL;
}
PyList_SET_ITEM(list, i, o);
}
PyMem_Free(groups);
return list;
}
#endif /* HAVE_GETGROUPLIST */
#ifdef HAVE_GETGROUPS
/*[clinic input]
os.getgroups
Return list of supplemental group IDs for the process.
[clinic start generated code]*/
static PyObject *
os_getgroups_impl(PyObject *module)
/*[clinic end generated code: output=42b0c17758561b56 input=d3f109412e6a155c]*/
{
// Call getgroups with length 0 to get the actual number of groups
int n = getgroups(0, NULL);
if (n < 0) {
return posix_error();
}
if (n == 0) {
return PyList_New(0);
}
gid_t *grouplist = PyMem_New(gid_t, n);
if (grouplist == NULL) {
return PyErr_NoMemory();
}
n = getgroups(n, grouplist);
if (n == -1) {
PyMem_Free(grouplist);
return posix_error();
}
PyObject *result = PyList_New(n);
if (result == NULL) {
goto error;
}
for (int i = 0; i < n; ++i) {
PyObject *group = _PyLong_FromGid(grouplist[i]);
if (group == NULL) {
goto error;
}
PyList_SET_ITEM(result, i, group);
}
PyMem_Free(grouplist);
return result;
error:
PyMem_Free(grouplist);
Py_XDECREF(result);
return NULL;
}
#endif /* HAVE_GETGROUPS */
#ifdef HAVE_INITGROUPS
#ifdef __APPLE__
/*[clinic input]
os.initgroups
username as oname: FSConverter
gid: int
/
Initialize the group access list.
Call the system initgroups() to initialize the group access list with all of
the groups of which the specified username is a member, plus the specified
group id.
[clinic start generated code]*/
static PyObject *
os_initgroups_impl(PyObject *module, PyObject *oname, int gid)
/*[clinic end generated code: output=7f074d30a425fd3a input=df3d54331b0af204]*/
#else
/*[clinic input]
os.initgroups
username as oname: FSConverter
gid: gid_t
/
Initialize the group access list.
Call the system initgroups() to initialize the group access list with all of
the groups of which the specified username is a member, plus the specified
group id.
[clinic start generated code]*/
static PyObject *
os_initgroups_impl(PyObject *module, PyObject *oname, gid_t gid)
/*[clinic end generated code: output=59341244521a9e3f input=0cb91bdc59a4c564]*/
#endif
{
const char *username = PyBytes_AS_STRING(oname);
if (initgroups(username, gid) == -1)
return PyErr_SetFromErrno(PyExc_OSError);
Py_RETURN_NONE;
}
#endif /* HAVE_INITGROUPS */
#ifdef HAVE_GETPGID
/*[clinic input]
os.getpgid
pid: pid_t
Call the system call getpgid(), and return the result.
[clinic start generated code]*/
static PyObject *
os_getpgid_impl(PyObject *module, pid_t pid)
/*[clinic end generated code: output=1db95a97be205d18 input=39d710ae3baaf1c7]*/
{
pid_t pgid = getpgid(pid);
if (pgid < 0)
return posix_error();
return PyLong_FromPid(pgid);
}
#endif /* HAVE_GETPGID */
#ifdef HAVE_GETPGRP
/*[clinic input]
os.getpgrp
Return the current process group id.
[clinic start generated code]*/
static PyObject *
os_getpgrp_impl(PyObject *module)
/*[clinic end generated code: output=c4fc381e51103cf3 input=6846fb2bb9a3705e]*/
{
#ifdef GETPGRP_HAVE_ARG
return PyLong_FromPid(getpgrp(0));
#else /* GETPGRP_HAVE_ARG */
return PyLong_FromPid(getpgrp());
#endif /* GETPGRP_HAVE_ARG */
}
#endif /* HAVE_GETPGRP */
#ifdef HAVE_SETPGRP
/*[clinic input]
os.setpgrp
Make the current process the leader of its process group.
[clinic start generated code]*/
static PyObject *
os_setpgrp_impl(PyObject *module)
/*[clinic end generated code: output=2554735b0a60f0a0 input=1f0619fcb5731e7e]*/
{
#ifdef SETPGRP_HAVE_ARG
if (setpgrp(0, 0) < 0)
#else /* SETPGRP_HAVE_ARG */
if (setpgrp() < 0)
#endif /* SETPGRP_HAVE_ARG */
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETPGRP */
#ifdef HAVE_GETPPID
#ifdef MS_WINDOWS
#include <tlhelp32.h>
static PyObject*
win32_getppid()
{
HANDLE snapshot;
pid_t mypid;
PyObject* result = NULL;
BOOL have_record;
PROCESSENTRY32 pe;
mypid = getpid(); /* This function never fails */
snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (snapshot == INVALID_HANDLE_VALUE)
return PyErr_SetFromWindowsErr(GetLastError());
pe.dwSize = sizeof(pe);
have_record = Process32First(snapshot, &pe);
while (have_record) {
if (mypid == (pid_t)pe.th32ProcessID) {
/* We could cache the ulong value in a static variable. */
result = PyLong_FromPid((pid_t)pe.th32ParentProcessID);
break;
}
have_record = Process32Next(snapshot, &pe);
}
/* If our loop exits and our pid was not found (result will be NULL)
* then GetLastError will return ERROR_NO_MORE_FILES. This is an
* error anyway, so let's raise it. */
if (!result)
result = PyErr_SetFromWindowsErr(GetLastError());
CloseHandle(snapshot);
return result;
}
#endif /*MS_WINDOWS*/
/*[clinic input]
os.getppid
Return the parent's process id.
If the parent process has already exited, Windows machines will still
return its id; others systems will return the id of the 'init' process (1).
[clinic start generated code]*/
static PyObject *
os_getppid_impl(PyObject *module)
/*[clinic end generated code: output=43b2a946a8c603b4 input=e637cb87539c030e]*/
{
#ifdef MS_WINDOWS
return win32_getppid();
#else
return PyLong_FromPid(getppid());
#endif
}
#endif /* HAVE_GETPPID */
#ifdef HAVE_GETLOGIN
/*[clinic input]
os.getlogin
Return the actual login name.
[clinic start generated code]*/
static PyObject *
os_getlogin_impl(PyObject *module)
/*[clinic end generated code: output=a32e66a7e5715dac input=2a21ab1e917163df]*/
{
PyObject *result = NULL;
#ifdef MS_WINDOWS
wchar_t user_name[UNLEN + 1];
DWORD num_chars = Py_ARRAY_LENGTH(user_name);
if (GetUserNameW(user_name, &num_chars)) {
/* num_chars is the number of unicode chars plus null terminator */
result = PyUnicode_FromWideChar(user_name, num_chars - 1);
}
else
result = PyErr_SetFromWindowsErr(GetLastError());
#else
char *name;
int old_errno = errno;
errno = 0;
name = getlogin();
if (name == NULL) {
if (errno)
posix_error();
else
PyErr_SetString(PyExc_OSError, "unable to determine login name");
}
else
result = PyUnicode_DecodeFSDefault(name);
errno = old_errno;
#endif
return result;
}
#endif /* HAVE_GETLOGIN */
#ifdef HAVE_GETUID
/*[clinic input]
os.getuid
Return the current process's user id.
[clinic start generated code]*/
static PyObject *
os_getuid_impl(PyObject *module)
/*[clinic end generated code: output=415c0b401ebed11a input=b53c8b35f110a516]*/
{
return _PyLong_FromUid(getuid());
}
#endif /* HAVE_GETUID */
#ifdef MS_WINDOWS
#define HAVE_KILL
#endif /* MS_WINDOWS */
#ifdef HAVE_KILL
/*[clinic input]
os.kill
pid: pid_t
signal: Py_ssize_t
/
Kill a process with a signal.
[clinic start generated code]*/
static PyObject *
os_kill_impl(PyObject *module, pid_t pid, Py_ssize_t signal)
/*[clinic end generated code: output=8e346a6701c88568 input=61a36b86ca275ab9]*/
{
if (PySys_Audit("os.kill", "in", pid, signal) < 0) {
return NULL;
}
#ifndef MS_WINDOWS
if (kill(pid, (int)signal) == -1) {
return posix_error();
}
// Check immediately if the signal was sent to the current process.
// Don't micro-optimize pid == getpid(), since PyErr_SetString() check
// is cheap.
if (PyErr_CheckSignals()) {
return NULL;
}
Py_RETURN_NONE;
#else /* !MS_WINDOWS */
PyObject *result;
DWORD sig = (DWORD)signal;
DWORD err;
HANDLE handle;
/* Console processes which share a common console can be sent CTRL+C or
CTRL+BREAK events, provided they handle said events. */
if (sig == CTRL_C_EVENT || sig == CTRL_BREAK_EVENT) {
if (GenerateConsoleCtrlEvent(sig, (DWORD)pid) == 0) {
err = GetLastError();
PyErr_SetFromWindowsErr(err);
}
else
Py_RETURN_NONE;
}
/* If the signal is outside of what GenerateConsoleCtrlEvent can use,
attempt to open and terminate the process. */
handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, (DWORD)pid);
if (handle == NULL) {
err = GetLastError();
return PyErr_SetFromWindowsErr(err);
}
if (TerminateProcess(handle, sig) == 0) {
err = GetLastError();
result = PyErr_SetFromWindowsErr(err);
} else {
Py_INCREF(Py_None);
result = Py_None;
}
CloseHandle(handle);
return result;
#endif /* !MS_WINDOWS */
}
#endif /* HAVE_KILL */
#ifdef HAVE_KILLPG
/*[clinic input]
os.killpg
pgid: pid_t
signal: int
/
Kill a process group with a signal.
[clinic start generated code]*/
static PyObject *
os_killpg_impl(PyObject *module, pid_t pgid, int signal)
/*[clinic end generated code: output=6dbcd2f1fdf5fdba input=38b5449eb8faec19]*/
{
if (PySys_Audit("os.killpg", "ii", pgid, signal) < 0) {
return NULL;
}
/* XXX some man pages make the `pgid` parameter an int, others
a pid_t. Since getpgrp() returns a pid_t, we assume killpg should
take the same type. Moreover, pid_t is always at least as wide as
int (else compilation of this module fails), which is safe. */
if (killpg(pgid, signal) == -1)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_KILLPG */
#ifdef HAVE_PLOCK
#ifdef HAVE_SYS_LOCK_H
#include <sys/lock.h>
#endif
/*[clinic input]
os.plock
op: int
/
Lock program segments into memory.");
[clinic start generated code]*/
static PyObject *
os_plock_impl(PyObject *module, int op)
/*[clinic end generated code: output=81424167033b168e input=e6e5e348e1525f60]*/
{
if (plock(op) == -1)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_PLOCK */
#ifdef HAVE_SETUID
/*[clinic input]
os.setuid
uid: uid_t
/
Set the current process's user id.
[clinic start generated code]*/
static PyObject *
os_setuid_impl(PyObject *module, uid_t uid)
/*[clinic end generated code: output=a0a41fd0d1ec555f input=c921a3285aa22256]*/
{
if (setuid(uid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETUID */
#ifdef HAVE_SETEUID
/*[clinic input]
os.seteuid
euid: uid_t
/
Set the current process's effective user id.
[clinic start generated code]*/
static PyObject *
os_seteuid_impl(PyObject *module, uid_t euid)
/*[clinic end generated code: output=102e3ad98361519a input=ba93d927e4781aa9]*/
{
if (seteuid(euid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETEUID */
#ifdef HAVE_SETEGID
/*[clinic input]
os.setegid
egid: gid_t
/
Set the current process's effective group id.
[clinic start generated code]*/
static PyObject *
os_setegid_impl(PyObject *module, gid_t egid)
/*[clinic end generated code: output=4e4b825a6a10258d input=4080526d0ccd6ce3]*/
{
if (setegid(egid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETEGID */
#ifdef HAVE_SETREUID
/*[clinic input]
os.setreuid
ruid: uid_t
euid: uid_t
/
Set the current process's real and effective user ids.
[clinic start generated code]*/
static PyObject *
os_setreuid_impl(PyObject *module, uid_t ruid, uid_t euid)
/*[clinic end generated code: output=62d991210006530a input=0ca8978de663880c]*/
{
if (setreuid(ruid, euid) < 0) {
return posix_error();
} else {
Py_RETURN_NONE;
}
}
#endif /* HAVE_SETREUID */
#ifdef HAVE_SETREGID
/*[clinic input]
os.setregid
rgid: gid_t
egid: gid_t
/
Set the current process's real and effective group ids.
[clinic start generated code]*/
static PyObject *
os_setregid_impl(PyObject *module, gid_t rgid, gid_t egid)
/*[clinic end generated code: output=aa803835cf5342f3 input=c59499f72846db78]*/
{
if (setregid(rgid, egid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETREGID */
#ifdef HAVE_SETGID
/*[clinic input]
os.setgid
gid: gid_t
/
Set the current process's group id.
[clinic start generated code]*/
static PyObject *
os_setgid_impl(PyObject *module, gid_t gid)
/*[clinic end generated code: output=bdccd7403f6ad8c3 input=27d30c4059045dc6]*/
{
if (setgid(gid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETGID */
#ifdef HAVE_SETGROUPS
/*[clinic input]
os.setgroups
groups: object
/
Set the groups of the current process to list.
[clinic start generated code]*/
static PyObject *
os_setgroups(PyObject *module, PyObject *groups)
/*[clinic end generated code: output=3fcb32aad58c5ecd input=fa742ca3daf85a7e]*/
{
if (!PySequence_Check(groups)) {
PyErr_SetString(PyExc_TypeError, "setgroups argument must be a sequence");
return NULL;
}
Py_ssize_t len = PySequence_Size(groups);
if (len < 0) {
return NULL;
}
if (len > MAX_GROUPS) {
PyErr_SetString(PyExc_ValueError, "too many groups");
return NULL;
}
gid_t *grouplist = PyMem_New(gid_t, len);
for (Py_ssize_t i = 0; i < len; i++) {
PyObject *elem;
elem = PySequence_GetItem(groups, i);
if (!elem) {
PyMem_Free(grouplist);
return NULL;
}
if (!PyLong_Check(elem)) {
PyErr_SetString(PyExc_TypeError,
"groups must be integers");
Py_DECREF(elem);
PyMem_Free(grouplist);
return NULL;
} else {
if (!_Py_Gid_Converter(elem, &grouplist[i])) {
Py_DECREF(elem);
PyMem_Free(grouplist);
return NULL;
}
}
Py_DECREF(elem);
}
if (setgroups(len, grouplist) < 0) {
PyMem_Free(grouplist);
return posix_error();
}
PyMem_Free(grouplist);
Py_RETURN_NONE;
}
#endif /* HAVE_SETGROUPS */
#if defined(HAVE_WAIT3) || defined(HAVE_WAIT4)
static PyObject *
wait_helper(PyObject *module, pid_t pid, int status, struct rusage *ru)
{
PyObject *result;
PyObject *struct_rusage;
if (pid == -1)
return posix_error();
// If wait succeeded but no child was ready to report status, ru will not
// have been populated.
if (pid == 0) {
memset(ru, 0, sizeof(*ru));
}
PyObject *m = PyImport_ImportModule("resource");
if (m == NULL)
return NULL;
struct_rusage = PyObject_GetAttr(m, get_posix_state(module)->struct_rusage);
Py_DECREF(m);
if (struct_rusage == NULL)
return NULL;
/* XXX(nnorwitz): Copied (w/mods) from resource.c, there should be only one. */
result = PyStructSequence_New((PyTypeObject*) struct_rusage);
Py_DECREF(struct_rusage);
if (!result)
return NULL;
#ifndef doubletime
#define doubletime(TV) ((double)(TV).tv_sec + (TV).tv_usec * 0.000001)
#endif
PyStructSequence_SET_ITEM(result, 0,
PyFloat_FromDouble(doubletime(ru->ru_utime)));
PyStructSequence_SET_ITEM(result, 1,
PyFloat_FromDouble(doubletime(ru->ru_stime)));
#define SET_INT(result, index, value)\
PyStructSequence_SET_ITEM(result, index, PyLong_FromLong(value))
SET_INT(result, 2, ru->ru_maxrss);
SET_INT(result, 3, ru->ru_ixrss);
SET_INT(result, 4, ru->ru_idrss);
SET_INT(result, 5, ru->ru_isrss);
SET_INT(result, 6, ru->ru_minflt);
SET_INT(result, 7, ru->ru_majflt);
SET_INT(result, 8, ru->ru_nswap);
SET_INT(result, 9, ru->ru_inblock);
SET_INT(result, 10, ru->ru_oublock);
SET_INT(result, 11, ru->ru_msgsnd);
SET_INT(result, 12, ru->ru_msgrcv);
SET_INT(result, 13, ru->ru_nsignals);
SET_INT(result, 14, ru->ru_nvcsw);
SET_INT(result, 15, ru->ru_nivcsw);
#undef SET_INT
if (PyErr_Occurred()) {
Py_DECREF(result);
return NULL;
}
return Py_BuildValue("NiN", PyLong_FromPid(pid), status, result);
}
#endif /* HAVE_WAIT3 || HAVE_WAIT4 */
#ifdef HAVE_WAIT3
/*[clinic input]
os.wait3
options: int
Wait for completion of a child process.
Returns a tuple of information about the child process:
(pid, status, rusage)
[clinic start generated code]*/
static PyObject *
os_wait3_impl(PyObject *module, int options)
/*[clinic end generated code: output=92c3224e6f28217a input=8ac4c56956b61710]*/
{
pid_t pid;
struct rusage ru;
int async_err = 0;
WAIT_TYPE status;
WAIT_STATUS_INT(status) = 0;
do {
Py_BEGIN_ALLOW_THREADS
pid = wait3(&status, options, &ru);
Py_END_ALLOW_THREADS
} while (pid < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (pid < 0)
return (!async_err) ? posix_error() : NULL;
return wait_helper(module, pid, WAIT_STATUS_INT(status), &ru);
}
#endif /* HAVE_WAIT3 */
#ifdef HAVE_WAIT4
/*[clinic input]
os.wait4
pid: pid_t
options: int
Wait for completion of a specific child process.
Returns a tuple of information about the child process:
(pid, status, rusage)
[clinic start generated code]*/
static PyObject *
os_wait4_impl(PyObject *module, pid_t pid, int options)
/*[clinic end generated code: output=66195aa507b35f70 input=d11deed0750600ba]*/
{
pid_t res;
struct rusage ru;
int async_err = 0;
WAIT_TYPE status;
WAIT_STATUS_INT(status) = 0;
do {
Py_BEGIN_ALLOW_THREADS
res = wait4(pid, &status, options, &ru);
Py_END_ALLOW_THREADS
} while (res < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res < 0)
return (!async_err) ? posix_error() : NULL;
return wait_helper(module, res, WAIT_STATUS_INT(status), &ru);
}
#endif /* HAVE_WAIT4 */
#if defined(HAVE_WAITID) && !defined(__APPLE__)
/*[clinic input]
os.waitid
idtype: idtype_t
Must be one of be P_PID, P_PGID or P_ALL.
id: id_t
The id to wait on.
options: int
Constructed from the ORing of one or more of WEXITED, WSTOPPED
or WCONTINUED and additionally may be ORed with WNOHANG or WNOWAIT.
/
Returns the result of waiting for a process or processes.
Returns either waitid_result or None if WNOHANG is specified and there are
no children in a waitable state.
[clinic start generated code]*/
static PyObject *
os_waitid_impl(PyObject *module, idtype_t idtype, id_t id, int options)
/*[clinic end generated code: output=5d2e1c0bde61f4d8 input=d8e7f76e052b7920]*/
{
PyObject *result;
int res;
int async_err = 0;
siginfo_t si;
si.si_pid = 0;
do {
Py_BEGIN_ALLOW_THREADS
res = waitid(idtype, id, &si, options);
Py_END_ALLOW_THREADS
} while (res < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res < 0)
return (!async_err) ? posix_error() : NULL;
if (si.si_pid == 0)
Py_RETURN_NONE;
PyObject *WaitidResultType = get_posix_state(module)->WaitidResultType;
result = PyStructSequence_New((PyTypeObject *)WaitidResultType);
if (!result)
return NULL;
PyStructSequence_SET_ITEM(result, 0, PyLong_FromPid(si.si_pid));
PyStructSequence_SET_ITEM(result, 1, _PyLong_FromUid(si.si_uid));
PyStructSequence_SET_ITEM(result, 2, PyLong_FromLong((long)(si.si_signo)));
PyStructSequence_SET_ITEM(result, 3, PyLong_FromLong((long)(si.si_status)));
PyStructSequence_SET_ITEM(result, 4, PyLong_FromLong((long)(si.si_code)));
if (PyErr_Occurred()) {
Py_DECREF(result);
return NULL;
}
return result;
}
#endif /* defined(HAVE_WAITID) && !defined(__APPLE__) */
#if defined(HAVE_WAITPID)
/*[clinic input]
os.waitpid
pid: pid_t
options: int
/
Wait for completion of a given child process.
Returns a tuple of information regarding the child process:
(pid, status)
The options argument is ignored on Windows.
[clinic start generated code]*/
static PyObject *
os_waitpid_impl(PyObject *module, pid_t pid, int options)
/*[clinic end generated code: output=5c37c06887a20270 input=0bf1666b8758fda3]*/
{
pid_t res;
int async_err = 0;
WAIT_TYPE status;
WAIT_STATUS_INT(status) = 0;
do {
Py_BEGIN_ALLOW_THREADS
res = waitpid(pid, &status, options);
Py_END_ALLOW_THREADS
} while (res < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res < 0)
return (!async_err) ? posix_error() : NULL;
return Py_BuildValue("Ni", PyLong_FromPid(res), WAIT_STATUS_INT(status));
}
#elif defined(HAVE_CWAIT)
/* MS C has a variant of waitpid() that's usable for most purposes. */
/*[clinic input]
os.waitpid
pid: intptr_t
options: int
/
Wait for completion of a given process.
Returns a tuple of information regarding the process:
(pid, status << 8)
The options argument is ignored on Windows.
[clinic start generated code]*/
static PyObject *
os_waitpid_impl(PyObject *module, intptr_t pid, int options)
/*[clinic end generated code: output=be836b221271d538 input=40f2440c515410f8]*/
{
int status;
intptr_t res;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
res = _cwait(&status, pid, options);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (res < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res < 0)
return (!async_err) ? posix_error() : NULL;
unsigned long long ustatus = (unsigned int)status;
/* shift the status left a byte so this is more like the POSIX waitpid */
return Py_BuildValue(_Py_PARSE_INTPTR "K", res, ustatus << 8);
}
#endif
#ifdef HAVE_WAIT
/*[clinic input]
os.wait
Wait for completion of a child process.
Returns a tuple of information about the child process:
(pid, status)
[clinic start generated code]*/
static PyObject *
os_wait_impl(PyObject *module)
/*[clinic end generated code: output=6bc419ac32fb364b input=03b0182d4a4700ce]*/
{
pid_t pid;
int async_err = 0;
WAIT_TYPE status;
WAIT_STATUS_INT(status) = 0;
do {
Py_BEGIN_ALLOW_THREADS
pid = wait(&status);
Py_END_ALLOW_THREADS
} while (pid < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (pid < 0)
return (!async_err) ? posix_error() : NULL;
return Py_BuildValue("Ni", PyLong_FromPid(pid), WAIT_STATUS_INT(status));
}
#endif /* HAVE_WAIT */
#if defined(__linux__) && defined(__NR_pidfd_open)
/*[clinic input]
os.pidfd_open
pid: pid_t
flags: unsigned_int = 0
Return a file descriptor referring to the process *pid*.
The descriptor can be used to perform process management without races and
signals.
[clinic start generated code]*/
static PyObject *
os_pidfd_open_impl(PyObject *module, pid_t pid, unsigned int flags)
/*[clinic end generated code: output=5c7252698947dc41 input=c3fd99ce947ccfef]*/
{
int fd = syscall(__NR_pidfd_open, pid, flags);
if (fd < 0) {
return posix_error();
}
return PyLong_FromLong(fd);
}
#endif
#if defined(HAVE_READLINK) || defined(MS_WINDOWS)
/*[clinic input]
os.readlink
path: path_t
*
dir_fd: dir_fd(requires='readlinkat') = None
Return a string representing the path to which the symbolic link points.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform. If it is unavailable,
using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_readlink_impl(PyObject *module, path_t *path, int dir_fd)
/*[clinic end generated code: output=d21b732a2e814030 input=113c87e0db1ecaf2]*/
{
#if defined(HAVE_READLINK)
char buffer[MAXPATHLEN+1];
ssize_t length;
#ifdef HAVE_READLINKAT
int readlinkat_unavailable = 0;
#endif
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_READLINKAT
if (dir_fd != DEFAULT_DIR_FD) {
if (HAVE_READLINKAT_RUNTIME) {
length = readlinkat(dir_fd, path->narrow, buffer, MAXPATHLEN);
} else {
readlinkat_unavailable = 1;
}
} else
#endif
length = readlink(path->narrow, buffer, MAXPATHLEN);
Py_END_ALLOW_THREADS
#ifdef HAVE_READLINKAT
if (readlinkat_unavailable) {
argument_unavailable_error(NULL, "dir_fd");
return NULL;
}
#endif
if (length < 0) {
return path_error(path);
}
buffer[length] = '\0';
if (PyUnicode_Check(path->object))
return PyUnicode_DecodeFSDefaultAndSize(buffer, length);
else
return PyBytes_FromStringAndSize(buffer, length);
#elif defined(MS_WINDOWS)
DWORD n_bytes_returned;
DWORD io_result = 0;
HANDLE reparse_point_handle;
char target_buffer[_Py_MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
_Py_REPARSE_DATA_BUFFER *rdb = (_Py_REPARSE_DATA_BUFFER *)target_buffer;
PyObject *result = NULL;
/* First get a handle to the reparse point */
Py_BEGIN_ALLOW_THREADS
reparse_point_handle = CreateFileW(
path->wide,
0,
0,
0,
OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS,
0);
if (reparse_point_handle != INVALID_HANDLE_VALUE) {
/* New call DeviceIoControl to read the reparse point */
io_result = DeviceIoControl(
reparse_point_handle,
FSCTL_GET_REPARSE_POINT,
0, 0, /* in buffer */
target_buffer, sizeof(target_buffer),
&n_bytes_returned,
0 /* we're not using OVERLAPPED_IO */
);
CloseHandle(reparse_point_handle);
}
Py_END_ALLOW_THREADS
if (io_result == 0) {
return path_error(path);
}
wchar_t *name = NULL;
Py_ssize_t nameLen = 0;
if (rdb->ReparseTag == IO_REPARSE_TAG_SYMLINK)
{
name = (wchar_t *)((char*)rdb->SymbolicLinkReparseBuffer.PathBuffer +
rdb->SymbolicLinkReparseBuffer.SubstituteNameOffset);
nameLen = rdb->SymbolicLinkReparseBuffer.SubstituteNameLength / sizeof(wchar_t);
}
else if (rdb->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT)
{
name = (wchar_t *)((char*)rdb->MountPointReparseBuffer.PathBuffer +
rdb->MountPointReparseBuffer.SubstituteNameOffset);
nameLen = rdb->MountPointReparseBuffer.SubstituteNameLength / sizeof(wchar_t);
}
else
{
PyErr_SetString(PyExc_ValueError, "not a symbolic link");
}
if (name) {
if (nameLen > 4 && wcsncmp(name, L"\\??\\", 4) == 0) {
/* Our buffer is mutable, so this is okay */
name[1] = L'\\';
}
result = PyUnicode_FromWideChar(name, nameLen);
if (result && path->narrow) {
Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
}
}
return result;
#endif
}
#endif /* defined(HAVE_READLINK) || defined(MS_WINDOWS) */
#if defined(MS_WINDOWS)
/* Remove the last portion of the path - return 0 on success */
static int
_dirnameW(WCHAR *path)
{
WCHAR *ptr;
size_t length = wcsnlen_s(path, MAX_PATH);
if (length == MAX_PATH) {
return -1;
}
/* walk the path from the end until a backslash is encountered */
for(ptr = path + length; ptr != path; ptr--) {
if (*ptr == L'\\' || *ptr == L'/') {
break;
}
}
*ptr = 0;
return 0;
}
#endif
#ifdef HAVE_SYMLINK
#if defined(MS_WINDOWS)
/* Is this path absolute? */
static int
_is_absW(const WCHAR *path)
{
return path[0] == L'\\' || path[0] == L'/' ||
(path[0] && path[1] == L':');
}
/* join root and rest with a backslash - return 0 on success */
static int
_joinW(WCHAR *dest_path, const WCHAR *root, const WCHAR *rest)
{
if (_is_absW(rest)) {
return wcscpy_s(dest_path, MAX_PATH, rest);
}
if (wcscpy_s(dest_path, MAX_PATH, root)) {
return -1;
}
if (dest_path[0] && wcscat_s(dest_path, MAX_PATH, L"\\")) {
return -1;
}
return wcscat_s(dest_path, MAX_PATH, rest);
}
/* Return True if the path at src relative to dest is a directory */
static int
_check_dirW(LPCWSTR src, LPCWSTR dest)
{
WIN32_FILE_ATTRIBUTE_DATA src_info;
WCHAR dest_parent[MAX_PATH];
WCHAR src_resolved[MAX_PATH] = L"";
/* dest_parent = os.path.dirname(dest) */
if (wcscpy_s(dest_parent, MAX_PATH, dest) ||
_dirnameW(dest_parent)) {
return 0;
}
/* src_resolved = os.path.join(dest_parent, src) */
if (_joinW(src_resolved, dest_parent, src)) {
return 0;
}
return (
GetFileAttributesExW(src_resolved, GetFileExInfoStandard, &src_info)
&& src_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY
);
}
#endif
/*[clinic input]
os.symlink
src: path_t
dst: path_t
target_is_directory: bool = False
*
dir_fd: dir_fd(requires='symlinkat')=None
# "symlink(src, dst, target_is_directory=False, *, dir_fd=None)\n\n\
Create a symbolic link pointing to src named dst.
target_is_directory is required on Windows if the target is to be
interpreted as a directory. (On Windows, symlink requires
Windows 6.0 or greater, and raises a NotImplementedError otherwise.)
target_is_directory is ignored on non-Windows platforms.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_symlink_impl(PyObject *module, path_t *src, path_t *dst,
int target_is_directory, int dir_fd)
/*[clinic end generated code: output=08ca9f3f3cf960f6 input=e820ec4472547bc3]*/
{
#ifdef MS_WINDOWS
DWORD result;
DWORD flags = 0;
/* Assumed true, set to false if detected to not be available. */
static int windows_has_symlink_unprivileged_flag = TRUE;
#else
int result;
#ifdef HAVE_SYMLINKAT
int symlinkat_unavailable = 0;
#endif
#endif
if (PySys_Audit("os.symlink", "OOi", src->object, dst->object,
dir_fd == DEFAULT_DIR_FD ? -1 : dir_fd) < 0) {
return NULL;
}
#ifdef MS_WINDOWS
if (windows_has_symlink_unprivileged_flag) {
/* Allow non-admin symlinks if system allows it. */
flags |= SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE;
}
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
/* if src is a directory, ensure flags==1 (target_is_directory bit) */
if (target_is_directory || _check_dirW(src->wide, dst->wide)) {
flags |= SYMBOLIC_LINK_FLAG_DIRECTORY;
}
result = CreateSymbolicLinkW(dst->wide, src->wide, flags);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (windows_has_symlink_unprivileged_flag && !result &&
ERROR_INVALID_PARAMETER == GetLastError()) {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
/* This error might be caused by
SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE not being supported.
Try again, and update windows_has_symlink_unprivileged_flag if we
are successful this time.
NOTE: There is a risk of a race condition here if there are other
conditions than the flag causing ERROR_INVALID_PARAMETER, and
another process (or thread) changes that condition in between our
calls to CreateSymbolicLink.
*/
flags &= ~(SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE);
result = CreateSymbolicLinkW(dst->wide, src->wide, flags);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (result || ERROR_INVALID_PARAMETER != GetLastError()) {
windows_has_symlink_unprivileged_flag = FALSE;
}
}
if (!result)
return path_error2(src, dst);
#else
if ((src->narrow && dst->wide) || (src->wide && dst->narrow)) {
PyErr_SetString(PyExc_ValueError,
"symlink: src and dst must be the same type");
return NULL;
}
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_SYMLINKAT
if (dir_fd != DEFAULT_DIR_FD) {
if (HAVE_SYMLINKAT_RUNTIME) {
result = symlinkat(src->narrow, dir_fd, dst->narrow);
} else {
symlinkat_unavailable = 1;
}
} else
#endif
result = symlink(src->narrow, dst->narrow);
Py_END_ALLOW_THREADS
#ifdef HAVE_SYMLINKAT
if (symlinkat_unavailable) {
argument_unavailable_error(NULL, "dir_fd");
return NULL;
}
#endif
if (result)
return path_error2(src, dst);
#endif
Py_RETURN_NONE;
}
#endif /* HAVE_SYMLINK */
static PyStructSequence_Field times_result_fields[] = {
{"user", "user time"},
{"system", "system time"},
{"children_user", "user time of children"},
{"children_system", "system time of children"},
{"elapsed", "elapsed time since an arbitrary point in the past"},
{NULL}
};
PyDoc_STRVAR(times_result__doc__,
"times_result: Result from os.times().\n\n\
This object may be accessed either as a tuple of\n\
(user, system, children_user, children_system, elapsed),\n\
or via the attributes user, system, children_user, children_system,\n\
and elapsed.\n\
\n\
See os.times for more information.");
static PyStructSequence_Desc times_result_desc = {
"times_result", /* name */
times_result__doc__, /* doc */
times_result_fields,
5
};
#ifdef MS_WINDOWS
#define HAVE_TIMES /* mandatory, for the method table */
#endif
#ifdef HAVE_TIMES
static PyObject *
build_times_result(PyObject *module, double user, double system,
double children_user, double children_system,
double elapsed)
{
PyObject *TimesResultType = get_posix_state(module)->TimesResultType;
PyObject *value = PyStructSequence_New((PyTypeObject *)TimesResultType);
if (value == NULL)
return NULL;
#define SET(i, field) \
{ \
PyObject *o = PyFloat_FromDouble(field); \
if (!o) { \
Py_DECREF(value); \
return NULL; \
} \
PyStructSequence_SET_ITEM(value, i, o); \
} \
SET(0, user);
SET(1, system);
SET(2, children_user);
SET(3, children_system);
SET(4, elapsed);
#undef SET
return value;
}
#ifndef MS_WINDOWS
#define NEED_TICKS_PER_SECOND
static long ticks_per_second = -1;
#endif /* MS_WINDOWS */
/*[clinic input]
os.times
Return a collection containing process timing information.
The object returned behaves like a named tuple with these fields:
(utime, stime, cutime, cstime, elapsed_time)
All fields are floating point numbers.
[clinic start generated code]*/
static PyObject *
os_times_impl(PyObject *module)
/*[clinic end generated code: output=35f640503557d32a input=2bf9df3d6ab2e48b]*/
#ifdef MS_WINDOWS
{
FILETIME create, exit, kernel, user;
HANDLE hProc;
hProc = GetCurrentProcess();
GetProcessTimes(hProc, &create, &exit, &kernel, &user);
/* The fields of a FILETIME structure are the hi and lo part
of a 64-bit value expressed in 100 nanosecond units.
1e7 is one second in such units; 1e-7 the inverse.
429.4967296 is 2**32 / 1e7 or 2**32 * 1e-7.
*/
return build_times_result(module,
(double)(user.dwHighDateTime*429.4967296 +
user.dwLowDateTime*1e-7),
(double)(kernel.dwHighDateTime*429.4967296 +
kernel.dwLowDateTime*1e-7),
(double)0,
(double)0,
(double)0);
}
#else /* MS_WINDOWS */
{
struct tms t;
clock_t c;
errno = 0;
c = times(&t);
if (c == (clock_t) -1)
return posix_error();
return build_times_result(module,
(double)t.tms_utime / ticks_per_second,
(double)t.tms_stime / ticks_per_second,
(double)t.tms_cutime / ticks_per_second,
(double)t.tms_cstime / ticks_per_second,
(double)c / ticks_per_second);
}
#endif /* MS_WINDOWS */
#endif /* HAVE_TIMES */
#ifdef HAVE_GETSID
/*[clinic input]
os.getsid
pid: pid_t
/
Call the system call getsid(pid) and return the result.
[clinic start generated code]*/
static PyObject *
os_getsid_impl(PyObject *module, pid_t pid)
/*[clinic end generated code: output=112deae56b306460 input=eeb2b923a30ce04e]*/
{
int sid;
sid = getsid(pid);
if (sid < 0)
return posix_error();
return PyLong_FromLong((long)sid);
}
#endif /* HAVE_GETSID */
#ifdef HAVE_SETSID
/*[clinic input]
os.setsid
Call the system call setsid().
[clinic start generated code]*/
static PyObject *
os_setsid_impl(PyObject *module)
/*[clinic end generated code: output=e2ddedd517086d77 input=5fff45858e2f0776]*/
{
if (setsid() < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETSID */
#ifdef HAVE_SETPGID
/*[clinic input]
os.setpgid
pid: pid_t
pgrp: pid_t
/
Call the system call setpgid(pid, pgrp).
[clinic start generated code]*/
static PyObject *
os_setpgid_impl(PyObject *module, pid_t pid, pid_t pgrp)
/*[clinic end generated code: output=6461160319a43d6a input=fceb395eca572e1a]*/
{
if (setpgid(pid, pgrp) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETPGID */
#ifdef HAVE_TCGETPGRP
/*[clinic input]
os.tcgetpgrp
fd: int
/
Return the process group associated with the terminal specified by fd.
[clinic start generated code]*/
static PyObject *
os_tcgetpgrp_impl(PyObject *module, int fd)
/*[clinic end generated code: output=f865e88be86c272b input=7f6c18eac10ada86]*/
{
pid_t pgid = tcgetpgrp(fd);
if (pgid < 0)
return posix_error();
return PyLong_FromPid(pgid);
}
#endif /* HAVE_TCGETPGRP */
#ifdef HAVE_TCSETPGRP
/*[clinic input]
os.tcsetpgrp
fd: int
pgid: pid_t
/
Set the process group associated with the terminal specified by fd.
[clinic start generated code]*/
static PyObject *
os_tcsetpgrp_impl(PyObject *module, int fd, pid_t pgid)
/*[clinic end generated code: output=f1821a381b9daa39 input=5bdc997c6a619020]*/
{
if (tcsetpgrp(fd, pgid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_TCSETPGRP */
/* Functions acting on file descriptors */
#ifdef O_CLOEXEC
extern int _Py_open_cloexec_works;
#endif
/*[clinic input]
os.open -> int
path: path_t
flags: int
mode: int = 0o777
*
dir_fd: dir_fd(requires='openat') = None
# "open(path, flags, mode=0o777, *, dir_fd=None)\n\n\
Open a file for low level IO. Returns a file descriptor (integer).
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static int
os_open_impl(PyObject *module, path_t *path, int flags, int mode, int dir_fd)
/*[clinic end generated code: output=abc7227888c8bc73 input=ad8623b29acd2934]*/
{
int fd;
int async_err = 0;
#ifdef HAVE_OPENAT
int openat_unavailable = 0;
#endif
#ifdef O_CLOEXEC
int *atomic_flag_works = &_Py_open_cloexec_works;
#elif !defined(MS_WINDOWS)
int *atomic_flag_works = NULL;
#endif
#ifdef MS_WINDOWS
flags |= O_NOINHERIT;
#elif defined(O_CLOEXEC)
flags |= O_CLOEXEC;
#endif
if (PySys_Audit("open", "OOi", path->object, Py_None, flags) < 0) {
return -1;
}
_Py_BEGIN_SUPPRESS_IPH
do {
Py_BEGIN_ALLOW_THREADS
#ifdef MS_WINDOWS
fd = _wopen(path->wide, flags, mode);
#else
#ifdef HAVE_OPENAT
if (dir_fd != DEFAULT_DIR_FD) {
if (HAVE_OPENAT_RUNTIME) {
fd = openat(dir_fd, path->narrow, flags, mode);
} else {
openat_unavailable = 1;
fd = -1;
}
} else
#endif /* HAVE_OPENAT */
fd = open(path->narrow, flags, mode);
#endif /* !MS_WINDOWS */
Py_END_ALLOW_THREADS
} while (fd < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
_Py_END_SUPPRESS_IPH
#ifdef HAVE_OPENAT
if (openat_unavailable) {
argument_unavailable_error(NULL, "dir_fd");
return -1;
}
#endif
if (fd < 0) {
if (!async_err)
PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, path->object);
return -1;
}
#ifndef MS_WINDOWS
if (_Py_set_inheritable(fd, 0, atomic_flag_works) < 0) {
close(fd);
return -1;
}
#endif
return fd;
}
/*[clinic input]
os.close
fd: int
Close a file descriptor.
[clinic start generated code]*/
static PyObject *
os_close_impl(PyObject *module, int fd)
/*[clinic end generated code: output=2fe4e93602822c14 input=2bc42451ca5c3223]*/
{
int res;
/* We do not want to retry upon EINTR: see http://lwn.net/Articles/576478/
* and http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
* for more details.
*/
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
res = close(fd);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error();
Py_RETURN_NONE;
}
/*[clinic input]
os.closerange
fd_low: int
fd_high: int
/
Closes all file descriptors in [fd_low, fd_high), ignoring errors.
[clinic start generated code]*/
static PyObject *
os_closerange_impl(PyObject *module, int fd_low, int fd_high)
/*[clinic end generated code: output=0ce5c20fcda681c2 input=5855a3d053ebd4ec]*/
{
Py_BEGIN_ALLOW_THREADS
_Py_closerange(fd_low, fd_high - 1);
Py_END_ALLOW_THREADS
Py_RETURN_NONE;
}
/*[clinic input]
os.dup -> int
fd: int
/
Return a duplicate of a file descriptor.
[clinic start generated code]*/
static int
os_dup_impl(PyObject *module, int fd)
/*[clinic end generated code: output=486f4860636b2a9f input=6f10f7ea97f7852a]*/
{
return _Py_dup(fd);
}
// dup2() is either provided by libc or dup2.c with AC_REPLACE_FUNCS().
// dup2.c provides working dup2() if and only if F_DUPFD is available.
#if (defined(HAVE_DUP3) || defined(F_DUPFD) || defined(MS_WINDOWS))
/*[clinic input]
os.dup2 -> int
fd: int
fd2: int
inheritable: bool=True
Duplicate file descriptor.
[clinic start generated code]*/
static int
os_dup2_impl(PyObject *module, int fd, int fd2, int inheritable)
/*[clinic end generated code: output=bc059d34a73404d1 input=c3cddda8922b038d]*/
{
int res = 0;
#if defined(HAVE_DUP3) && \
!(defined(HAVE_FCNTL_H) && defined(F_DUP2FD_CLOEXEC))
/* dup3() is available on Linux 2.6.27+ and glibc 2.9 */
static int dup3_works = -1;
#endif
if (fd < 0 || fd2 < 0) {
posix_error();
return -1;
}
/* dup2() can fail with EINTR if the target FD is already open, because it
* then has to be closed. See os_close_impl() for why we don't handle EINTR
* upon close(), and therefore below.
*/
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
res = dup2(fd, fd2);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (res < 0) {
posix_error();
return -1;
}
res = fd2; // msvcrt dup2 returns 0 on success.
/* Character files like console cannot be make non-inheritable */
if (!inheritable && _Py_set_inheritable(fd2, 0, NULL) < 0) {
close(fd2);
return -1;
}
#elif defined(HAVE_FCNTL_H) && defined(F_DUP2FD_CLOEXEC)
Py_BEGIN_ALLOW_THREADS
if (!inheritable)
res = fcntl(fd, F_DUP2FD_CLOEXEC, fd2);
else
res = dup2(fd, fd2);
Py_END_ALLOW_THREADS
if (res < 0) {
posix_error();
return -1;
}
#else
#ifdef HAVE_DUP3
if (!inheritable && dup3_works != 0) {
Py_BEGIN_ALLOW_THREADS
res = dup3(fd, fd2, O_CLOEXEC);
Py_END_ALLOW_THREADS
if (res < 0) {
if (dup3_works == -1)
dup3_works = (errno != ENOSYS);
if (dup3_works) {
posix_error();
return -1;
}
}
}
if (inheritable || dup3_works == 0)
{
#endif
Py_BEGIN_ALLOW_THREADS
res = dup2(fd, fd2);
Py_END_ALLOW_THREADS
if (res < 0) {
posix_error();
return -1;
}
if (!inheritable && _Py_set_inheritable(fd2, 0, NULL) < 0) {
close(fd2);
return -1;
}
#ifdef HAVE_DUP3
}
#endif
#endif
return res;
}
#endif
#ifdef HAVE_LOCKF
/*[clinic input]
os.lockf
fd: int
An open file descriptor.
command: int
One of F_LOCK, F_TLOCK, F_ULOCK or F_TEST.
length: Py_off_t
The number of bytes to lock, starting at the current position.
/
Apply, test or remove a POSIX lock on an open file descriptor.
[clinic start generated code]*/
static PyObject *
os_lockf_impl(PyObject *module, int fd, int command, Py_off_t length)
/*[clinic end generated code: output=af7051f3e7c29651 input=65da41d2106e9b79]*/
{
int res;
if (PySys_Audit("os.lockf", "iiL", fd, command, length) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
res = lockf(fd, command, length);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_LOCKF */
/*[clinic input]
os.lseek -> Py_off_t
fd: int
position: Py_off_t
how: int
/
Set the position of a file descriptor. Return the new position.
Return the new cursor position in number of bytes
relative to the beginning of the file.
[clinic start generated code]*/
static Py_off_t
os_lseek_impl(PyObject *module, int fd, Py_off_t position, int how)
/*[clinic end generated code: output=971e1efb6b30bd2f input=902654ad3f96a6d3]*/
{
Py_off_t result;
#ifdef SEEK_SET
/* Turn 0, 1, 2 into SEEK_{SET,CUR,END} */
switch (how) {
case 0: how = SEEK_SET; break;
case 1: how = SEEK_CUR; break;
case 2: how = SEEK_END; break;
}
#endif /* SEEK_END */
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
#ifdef MS_WINDOWS
result = _lseeki64(fd, position, how);
#else
result = lseek(fd, position, how);
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (result < 0)
posix_error();
return result;
}
/*[clinic input]
os.read
fd: int
length: Py_ssize_t
/
Read from a file descriptor. Returns a bytes object.
[clinic start generated code]*/
static PyObject *
os_read_impl(PyObject *module, int fd, Py_ssize_t length)
/*[clinic end generated code: output=dafbe9a5cddb987b input=1df2eaa27c0bf1d3]*/
{
Py_ssize_t n;
PyObject *buffer;
if (length < 0) {
errno = EINVAL;
return posix_error();
}
length = Py_MIN(length, _PY_READ_MAX);
buffer = PyBytes_FromStringAndSize((char *)NULL, length);
if (buffer == NULL)
return NULL;
n = _Py_read(fd, PyBytes_AS_STRING(buffer), length);
if (n == -1) {
Py_DECREF(buffer);
return NULL;
}
if (n != length)
_PyBytes_Resize(&buffer, n);
return buffer;
}
#if (defined(HAVE_SENDFILE) && (defined(__FreeBSD__) || defined(__DragonFly__) \
|| defined(__APPLE__))) \
|| defined(HAVE_READV) || defined(HAVE_PREADV) || defined (HAVE_PREADV2) \
|| defined(HAVE_WRITEV) || defined(HAVE_PWRITEV) || defined (HAVE_PWRITEV2)
static int
iov_setup(struct iovec **iov, Py_buffer **buf, PyObject *seq, Py_ssize_t cnt, int type)
{
Py_ssize_t i, j;
*iov = PyMem_New(struct iovec, cnt);
if (*iov == NULL) {
PyErr_NoMemory();
return -1;
}
*buf = PyMem_New(Py_buffer, cnt);
if (*buf == NULL) {
PyMem_Free(*iov);
PyErr_NoMemory();
return -1;
}
for (i = 0; i < cnt; i++) {
PyObject *item = PySequence_GetItem(seq, i);
if (item == NULL)
goto fail;
if (PyObject_GetBuffer(item, &(*buf)[i], type) == -1) {
Py_DECREF(item);
goto fail;
}
Py_DECREF(item);
(*iov)[i].iov_base = (*buf)[i].buf;
(*iov)[i].iov_len = (*buf)[i].len;
}
return 0;
fail:
PyMem_Free(*iov);
for (j = 0; j < i; j++) {
PyBuffer_Release(&(*buf)[j]);
}
PyMem_Free(*buf);
return -1;
}
static void
iov_cleanup(struct iovec *iov, Py_buffer *buf, int cnt)
{
int i;
PyMem_Free(iov);
for (i = 0; i < cnt; i++) {
PyBuffer_Release(&buf[i]);
}
PyMem_Free(buf);
}
#endif
#ifdef HAVE_READV
/*[clinic input]
os.readv -> Py_ssize_t
fd: int
buffers: object
/
Read from a file descriptor fd into an iterable of buffers.
The buffers should be mutable buffers accepting bytes.
readv will transfer data into each buffer until it is full
and then move on to the next buffer in the sequence to hold
the rest of the data.
readv returns the total number of bytes read,
which may be less than the total capacity of all the buffers.
[clinic start generated code]*/
static Py_ssize_t
os_readv_impl(PyObject *module, int fd, PyObject *buffers)
/*[clinic end generated code: output=792da062d3fcebdb input=e679eb5dbfa0357d]*/
{
Py_ssize_t cnt, n;
int async_err = 0;
struct iovec *iov;
Py_buffer *buf;
if (!PySequence_Check(buffers)) {
PyErr_SetString(PyExc_TypeError,
"readv() arg 2 must be a sequence");
return -1;
}
cnt = PySequence_Size(buffers);
if (cnt < 0)
return -1;
if (iov_setup(&iov, &buf, buffers, cnt, PyBUF_WRITABLE) < 0)
return -1;
do {
Py_BEGIN_ALLOW_THREADS
n = readv(fd, iov, cnt);
Py_END_ALLOW_THREADS
} while (n < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
iov_cleanup(iov, buf, cnt);
if (n < 0) {
if (!async_err)
posix_error();
return -1;
}
return n;
}
#endif /* HAVE_READV */
#ifdef HAVE_PREAD
/*[clinic input]
os.pread
fd: int
length: Py_ssize_t
offset: Py_off_t
/
Read a number of bytes from a file descriptor starting at a particular offset.
Read length bytes from file descriptor fd, starting at offset bytes from
the beginning of the file. The file offset remains unchanged.
[clinic start generated code]*/
static PyObject *
os_pread_impl(PyObject *module, int fd, Py_ssize_t length, Py_off_t offset)
/*[clinic end generated code: output=3f875c1eef82e32f input=85cb4a5589627144]*/
{
Py_ssize_t n;
int async_err = 0;
PyObject *buffer;
if (length < 0) {
errno = EINVAL;
return posix_error();
}
buffer = PyBytes_FromStringAndSize((char *)NULL, length);
if (buffer == NULL)
return NULL;
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
n = pread(fd, PyBytes_AS_STRING(buffer), length, offset);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (n < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (n < 0) {
Py_DECREF(buffer);
return (!async_err) ? posix_error() : NULL;
}
if (n != length)
_PyBytes_Resize(&buffer, n);
return buffer;
}
#endif /* HAVE_PREAD */
#if defined(HAVE_PREADV) || defined (HAVE_PREADV2)
/*[clinic input]
os.preadv -> Py_ssize_t
fd: int
buffers: object
offset: Py_off_t
flags: int = 0
/
Reads from a file descriptor into a number of mutable bytes-like objects.
Combines the functionality of readv() and pread(). As readv(), it will
transfer data into each buffer until it is full and then move on to the next
buffer in the sequence to hold the rest of the data. Its fourth argument,
specifies the file offset at which the input operation is to be performed. It
will return the total number of bytes read (which can be less than the total
capacity of all the objects).
The flags argument contains a bitwise OR of zero or more of the following flags:
- RWF_HIPRI
- RWF_NOWAIT
Using non-zero flags requires Linux 4.6 or newer.
[clinic start generated code]*/
static Py_ssize_t
os_preadv_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset,
int flags)
/*[clinic end generated code: output=26fc9c6e58e7ada5 input=4173919dc1f7ed99]*/
{
Py_ssize_t cnt, n;
int async_err = 0;
struct iovec *iov;
Py_buffer *buf;
if (!PySequence_Check(buffers)) {
PyErr_SetString(PyExc_TypeError,
"preadv2() arg 2 must be a sequence");
return -1;
}
cnt = PySequence_Size(buffers);
if (cnt < 0) {
return -1;
}
#ifndef HAVE_PREADV2
if(flags != 0) {
argument_unavailable_error("preadv2", "flags");
return -1;
}
#endif
if (iov_setup(&iov, &buf, buffers, cnt, PyBUF_WRITABLE) < 0) {
return -1;
}
#ifdef HAVE_PREADV2
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
n = preadv2(fd, iov, cnt, offset, flags);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (n < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
#else
do {
#ifdef __APPLE__
/* This entire function will be removed from the module dict when the API
* is not available.
*/
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunguarded-availability"
#pragma clang diagnostic ignored "-Wunguarded-availability-new"
#endif
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
n = preadv(fd, iov, cnt, offset);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (n < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
#ifdef __APPLE__
#pragma clang diagnostic pop
#endif
#endif
iov_cleanup(iov, buf, cnt);
if (n < 0) {
if (!async_err) {
posix_error();
}
return -1;
}
return n;
}
#endif /* HAVE_PREADV */
/*[clinic input]
os.write -> Py_ssize_t
fd: int
data: Py_buffer
/
Write a bytes object to a file descriptor.
[clinic start generated code]*/
static Py_ssize_t
os_write_impl(PyObject *module, int fd, Py_buffer *data)
/*[clinic end generated code: output=e4ef5bc904b58ef9 input=3207e28963234f3c]*/
{
return _Py_write(fd, data->buf, data->len);
}
#ifdef HAVE_SENDFILE
#ifdef __APPLE__
/*[clinic input]
os.sendfile
out_fd: int
in_fd: int
offset: Py_off_t
count as sbytes: Py_off_t
headers: object(c_default="NULL") = ()
trailers: object(c_default="NULL") = ()
flags: int = 0
Copy count bytes from file descriptor in_fd to file descriptor out_fd.
[clinic start generated code]*/
static PyObject *
os_sendfile_impl(PyObject *module, int out_fd, int in_fd, Py_off_t offset,
Py_off_t sbytes, PyObject *headers, PyObject *trailers,
int flags)
/*[clinic end generated code: output=81c4bcd143f5c82b input=b0d72579d4c69afa]*/
#elif defined(__FreeBSD__) || defined(__DragonFly__)
/*[clinic input]
os.sendfile
out_fd: int
in_fd: int
offset: Py_off_t
count: Py_ssize_t
headers: object(c_default="NULL") = ()
trailers: object(c_default="NULL") = ()
flags: int = 0
Copy count bytes from file descriptor in_fd to file descriptor out_fd.
[clinic start generated code]*/
static PyObject *
os_sendfile_impl(PyObject *module, int out_fd, int in_fd, Py_off_t offset,
Py_ssize_t count, PyObject *headers, PyObject *trailers,
int flags)
/*[clinic end generated code: output=329ea009bdd55afc input=338adb8ff84ae8cd]*/
#else
/*[clinic input]
os.sendfile
out_fd: int
in_fd: int
offset as offobj: object
count: Py_ssize_t
Copy count bytes from file descriptor in_fd to file descriptor out_fd.
[clinic start generated code]*/
static PyObject *
os_sendfile_impl(PyObject *module, int out_fd, int in_fd, PyObject *offobj,
Py_ssize_t count)
/*[clinic end generated code: output=ae81216e40f167d8 input=76d64058c74477ba]*/
#endif
{
Py_ssize_t ret;
int async_err = 0;
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__)
#ifndef __APPLE__
off_t sbytes;
#endif
Py_buffer *hbuf, *tbuf;
struct sf_hdtr sf;
sf.headers = NULL;
sf.trailers = NULL;
if (headers != NULL) {
if (!PySequence_Check(headers)) {
PyErr_SetString(PyExc_TypeError,
"sendfile() headers must be a sequence");
return NULL;
} else {
Py_ssize_t i = PySequence_Size(headers);
if (i < 0)
return NULL;
if (i > INT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"sendfile() header is too large");
return NULL;
}
if (i > 0) {
sf.hdr_cnt = (int)i;
if (iov_setup(&(sf.headers), &hbuf,
headers, sf.hdr_cnt, PyBUF_SIMPLE) < 0)
return NULL;
#ifdef __APPLE__
for (i = 0; i < sf.hdr_cnt; i++) {
Py_ssize_t blen = sf.headers[i].iov_len;
# define OFF_T_MAX 0x7fffffffffffffff
if (sbytes >= OFF_T_MAX - blen) {
PyErr_SetString(PyExc_OverflowError,
"sendfile() header is too large");
return NULL;
}
sbytes += blen;
}
#endif
}
}
}
if (trailers != NULL) {
if (!PySequence_Check(trailers)) {
PyErr_SetString(PyExc_TypeError,
"sendfile() trailers must be a sequence");
return NULL;
} else {
Py_ssize_t i = PySequence_Size(trailers);
if (i < 0)
return NULL;
if (i > INT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"sendfile() trailer is too large");
return NULL;
}
if (i > 0) {
sf.trl_cnt = (int)i;
if (iov_setup(&(sf.trailers), &tbuf,
trailers, sf.trl_cnt, PyBUF_SIMPLE) < 0)
return NULL;
}
}
}
_Py_BEGIN_SUPPRESS_IPH
do {
Py_BEGIN_ALLOW_THREADS
#ifdef __APPLE__
ret = sendfile(in_fd, out_fd, offset, &sbytes, &sf, flags);
#else
ret = sendfile(in_fd, out_fd, offset, count, &sf, &sbytes, flags);
#endif
Py_END_ALLOW_THREADS
} while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
_Py_END_SUPPRESS_IPH
if (sf.headers != NULL)
iov_cleanup(sf.headers, hbuf, sf.hdr_cnt);
if (sf.trailers != NULL)
iov_cleanup(sf.trailers, tbuf, sf.trl_cnt);
if (ret < 0) {
if ((errno == EAGAIN) || (errno == EBUSY)) {
if (sbytes != 0) {
// some data has been sent
goto done;
}
else {
// no data has been sent; upper application is supposed
// to retry on EAGAIN or EBUSY
return posix_error();
}
}
return (!async_err) ? posix_error() : NULL;
}
goto done;
done:
#if !defined(HAVE_LARGEFILE_SUPPORT)
return Py_BuildValue("l", sbytes);
#else
return Py_BuildValue("L", sbytes);
#endif
#else
#ifdef __linux__
if (offobj == Py_None) {
do {
Py_BEGIN_ALLOW_THREADS
ret = sendfile(out_fd, in_fd, NULL, count);
Py_END_ALLOW_THREADS
} while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (ret < 0)
return (!async_err) ? posix_error() : NULL;
return Py_BuildValue("n", ret);
}
#endif
off_t offset;
if (!Py_off_t_converter(offobj, &offset))
return NULL;
#if defined(__sun) && defined(__SVR4)
// On Solaris, sendfile raises EINVAL rather than returning 0
// when the offset is equal or bigger than the in_fd size.
struct stat st;
do {
Py_BEGIN_ALLOW_THREADS
ret = fstat(in_fd, &st);
Py_END_ALLOW_THREADS
} while (ret != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (ret < 0)
return (!async_err) ? posix_error() : NULL;
if (offset >= st.st_size) {
return Py_BuildValue("i", 0);
}
// On illumos specifically sendfile() may perform a partial write but
// return -1/an error (in one confirmed case the destination socket
// had a 5 second timeout set and errno was EAGAIN) and it's on the client
// code to check if the offset parameter was modified by sendfile().
//
// We need this variable to track said change.
off_t original_offset = offset;
#endif
do {
Py_BEGIN_ALLOW_THREADS
ret = sendfile(out_fd, in_fd, &offset, count);
#if defined(__sun) && defined(__SVR4)
// This handles illumos-specific sendfile() partial write behavior,
// see a comment above for more details.
if (ret < 0 && offset != original_offset) {
ret = offset - original_offset;
}
#endif
Py_END_ALLOW_THREADS
} while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (ret < 0)
return (!async_err) ? posix_error() : NULL;
return Py_BuildValue("n", ret);
#endif
}
#endif /* HAVE_SENDFILE */
#if defined(__APPLE__)
/*[clinic input]
os._fcopyfile
in_fd: int
out_fd: int
flags: int
/
Efficiently copy content or metadata of 2 regular file descriptors (macOS).
[clinic start generated code]*/
static PyObject *
os__fcopyfile_impl(PyObject *module, int in_fd, int out_fd, int flags)
/*[clinic end generated code: output=c9d1a35a992e401b input=1e34638a86948795]*/
{
int ret;
Py_BEGIN_ALLOW_THREADS
ret = fcopyfile(in_fd, out_fd, NULL, flags);
Py_END_ALLOW_THREADS
if (ret < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif
/*[clinic input]
os.fstat
fd : int
Perform a stat system call on the given file descriptor.
Like stat(), but for an open file descriptor.
Equivalent to os.stat(fd).
[clinic start generated code]*/
static PyObject *
os_fstat_impl(PyObject *module, int fd)
/*[clinic end generated code: output=efc038cb5f654492 input=27e0e0ebbe5600c9]*/
{
STRUCT_STAT st;
int res;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
res = FSTAT(fd, &st);
Py_END_ALLOW_THREADS
} while (res != 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (res != 0) {
#ifdef MS_WINDOWS
return PyErr_SetFromWindowsErr(0);
#else
return (!async_err) ? posix_error() : NULL;
#endif
}
return _pystat_fromstructstat(module, &st);
}
/*[clinic input]
os.isatty -> bool
fd: int
/
Return True if the fd is connected to a terminal.
Return True if the file descriptor is an open file descriptor
connected to the slave end of a terminal.
[clinic start generated code]*/
static int
os_isatty_impl(PyObject *module, int fd)
/*[clinic end generated code: output=6a48c8b4e644ca00 input=08ce94aa1eaf7b5e]*/
{
int return_value;
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
return_value = isatty(fd);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
return return_value;
}
#ifdef HAVE_PIPE
/*[clinic input]
os.pipe
Create a pipe.
Returns a tuple of two file descriptors:
(read_fd, write_fd)
[clinic start generated code]*/
static PyObject *
os_pipe_impl(PyObject *module)
/*[clinic end generated code: output=ff9b76255793b440 input=02535e8c8fa6c4d4]*/
{
int fds[2];
#ifdef MS_WINDOWS
HANDLE read, write;
SECURITY_ATTRIBUTES attr;
BOOL ok;
#else
int res;
#endif
#ifdef MS_WINDOWS
attr.nLength = sizeof(attr);
attr.lpSecurityDescriptor = NULL;
attr.bInheritHandle = FALSE;
Py_BEGIN_ALLOW_THREADS
ok = CreatePipe(&read, &write, &attr, 0);
if (ok) {
fds[0] = _Py_open_osfhandle_noraise(read, _O_RDONLY);
fds[1] = _Py_open_osfhandle_noraise(write, _O_WRONLY);
if (fds[0] == -1 || fds[1] == -1) {
CloseHandle(read);
CloseHandle(write);
ok = 0;
}
}
Py_END_ALLOW_THREADS
if (!ok)
return PyErr_SetFromWindowsErr(0);
#else
#ifdef HAVE_PIPE2
Py_BEGIN_ALLOW_THREADS
res = pipe2(fds, O_CLOEXEC);
Py_END_ALLOW_THREADS
if (res != 0 && errno == ENOSYS)
{
#endif
Py_BEGIN_ALLOW_THREADS
res = pipe(fds);
Py_END_ALLOW_THREADS
if (res == 0) {
if (_Py_set_inheritable(fds[0], 0, NULL) < 0) {
close(fds[0]);
close(fds[1]);
return NULL;
}
if (_Py_set_inheritable(fds[1], 0, NULL) < 0) {
close(fds[0]);
close(fds[1]);
return NULL;
}
}
#ifdef HAVE_PIPE2
}
#endif
if (res != 0)
return PyErr_SetFromErrno(PyExc_OSError);
#endif /* !MS_WINDOWS */
return Py_BuildValue("(ii)", fds[0], fds[1]);
}
#endif /* HAVE_PIPE */
#ifdef HAVE_PIPE2
/*[clinic input]
os.pipe2
flags: int
/
Create a pipe with flags set atomically.
Returns a tuple of two file descriptors:
(read_fd, write_fd)
flags can be constructed by ORing together one or more of these values:
O_NONBLOCK, O_CLOEXEC.
[clinic start generated code]*/
static PyObject *
os_pipe2_impl(PyObject *module, int flags)
/*[clinic end generated code: output=25751fb43a45540f input=f261b6e7e63c6817]*/
{
int fds[2];
int res;
res = pipe2(fds, flags);
if (res != 0)
return posix_error();
return Py_BuildValue("(ii)", fds[0], fds[1]);
}
#endif /* HAVE_PIPE2 */
#ifdef HAVE_WRITEV
/*[clinic input]
os.writev -> Py_ssize_t
fd: int
buffers: object
/
Iterate over buffers, and write the contents of each to a file descriptor.
Returns the total number of bytes written.
buffers must be a sequence of bytes-like objects.
[clinic start generated code]*/
static Py_ssize_t
os_writev_impl(PyObject *module, int fd, PyObject *buffers)
/*[clinic end generated code: output=56565cfac3aac15b input=5b8d17fe4189d2fe]*/
{
Py_ssize_t cnt;
Py_ssize_t result;
int async_err = 0;
struct iovec *iov;
Py_buffer *buf;
if (!PySequence_Check(buffers)) {
PyErr_SetString(PyExc_TypeError,
"writev() arg 2 must be a sequence");
return -1;
}
cnt = PySequence_Size(buffers);
if (cnt < 0)
return -1;
if (iov_setup(&iov, &buf, buffers, cnt, PyBUF_SIMPLE) < 0) {
return -1;
}
do {
Py_BEGIN_ALLOW_THREADS
result = writev(fd, iov, cnt);
Py_END_ALLOW_THREADS
} while (result < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
iov_cleanup(iov, buf, cnt);
if (result < 0 && !async_err)
posix_error();
return result;
}
#endif /* HAVE_WRITEV */
#ifdef HAVE_PWRITE
/*[clinic input]
os.pwrite -> Py_ssize_t
fd: int
buffer: Py_buffer
offset: Py_off_t
/
Write bytes to a file descriptor starting at a particular offset.
Write buffer to fd, starting at offset bytes from the beginning of
the file. Returns the number of bytes writte. Does not change the
current file offset.
[clinic start generated code]*/
static Py_ssize_t
os_pwrite_impl(PyObject *module, int fd, Py_buffer *buffer, Py_off_t offset)
/*[clinic end generated code: output=c74da630758ee925 input=19903f1b3dd26377]*/
{
Py_ssize_t size;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
size = pwrite(fd, buffer->buf, (size_t)buffer->len, offset);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (size < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (size < 0 && !async_err)
posix_error();
return size;
}
#endif /* HAVE_PWRITE */
#if defined(HAVE_PWRITEV) || defined (HAVE_PWRITEV2)
/*[clinic input]
os.pwritev -> Py_ssize_t
fd: int
buffers: object
offset: Py_off_t
flags: int = 0
/
Writes the contents of bytes-like objects to a file descriptor at a given offset.
Combines the functionality of writev() and pwrite(). All buffers must be a sequence
of bytes-like objects. Buffers are processed in array order. Entire contents of first
buffer is written before proceeding to second, and so on. The operating system may
set a limit (sysconf() value SC_IOV_MAX) on the number of buffers that can be used.
This function writes the contents of each object to the file descriptor and returns
the total number of bytes written.
The flags argument contains a bitwise OR of zero or more of the following flags:
- RWF_DSYNC
- RWF_SYNC
- RWF_APPEND
Using non-zero flags requires Linux 4.7 or newer.
[clinic start generated code]*/
static Py_ssize_t
os_pwritev_impl(PyObject *module, int fd, PyObject *buffers, Py_off_t offset,
int flags)
/*[clinic end generated code: output=e3dd3e9d11a6a5c7 input=35358c327e1a2a8e]*/
{
Py_ssize_t cnt;
Py_ssize_t result;
int async_err = 0;
struct iovec *iov;
Py_buffer *buf;
if (!PySequence_Check(buffers)) {
PyErr_SetString(PyExc_TypeError,
"pwritev() arg 2 must be a sequence");
return -1;
}
cnt = PySequence_Size(buffers);
if (cnt < 0) {
return -1;
}
#ifndef HAVE_PWRITEV2
if(flags != 0) {
argument_unavailable_error("pwritev2", "flags");
return -1;
}
#endif
if (iov_setup(&iov, &buf, buffers, cnt, PyBUF_SIMPLE) < 0) {
return -1;
}
#ifdef HAVE_PWRITEV2
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
result = pwritev2(fd, iov, cnt, offset, flags);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (result < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
#else
#ifdef __APPLE__
/* This entire function will be removed from the module dict when the API
* is not available.
*/
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunguarded-availability"
#pragma clang diagnostic ignored "-Wunguarded-availability-new"
#endif
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
result = pwritev(fd, iov, cnt, offset);
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (result < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
#ifdef __APPLE__
#pragma clang diagnostic pop
#endif
#endif
iov_cleanup(iov, buf, cnt);
if (result < 0) {
if (!async_err) {
posix_error();
}
return -1;
}
return result;
}
#endif /* HAVE_PWRITEV */
#ifdef HAVE_COPY_FILE_RANGE
/*[clinic input]
os.copy_file_range
src: int
Source file descriptor.
dst: int
Destination file descriptor.
count: Py_ssize_t
Number of bytes to copy.
offset_src: object = None
Starting offset in src.
offset_dst: object = None
Starting offset in dst.
Copy count bytes from one file descriptor to another.
If offset_src is None, then src is read from the current position;
respectively for offset_dst.
[clinic start generated code]*/
static PyObject *
os_copy_file_range_impl(PyObject *module, int src, int dst, Py_ssize_t count,
PyObject *offset_src, PyObject *offset_dst)
/*[clinic end generated code: output=1a91713a1d99fc7a input=42fdce72681b25a9]*/
{
off_t offset_src_val, offset_dst_val;
off_t *p_offset_src = NULL;
off_t *p_offset_dst = NULL;
Py_ssize_t ret;
int async_err = 0;
/* The flags argument is provided to allow
* for future extensions and currently must be to 0. */
int flags = 0;
if (count < 0) {
PyErr_SetString(PyExc_ValueError, "negative value for 'count' not allowed");
return NULL;
}
if (offset_src != Py_None) {
if (!Py_off_t_converter(offset_src, &offset_src_val)) {
return NULL;
}
p_offset_src = &offset_src_val;
}
if (offset_dst != Py_None) {
if (!Py_off_t_converter(offset_dst, &offset_dst_val)) {
return NULL;
}
p_offset_dst = &offset_dst_val;
}
do {
Py_BEGIN_ALLOW_THREADS
ret = copy_file_range(src, p_offset_src, dst, p_offset_dst, count, flags);
Py_END_ALLOW_THREADS
} while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (ret < 0) {
return (!async_err) ? posix_error() : NULL;
}
return PyLong_FromSsize_t(ret);
}
#endif /* HAVE_COPY_FILE_RANGE*/
#if (defined(HAVE_SPLICE) && !defined(_AIX))
/*[clinic input]
os.splice
src: int
Source file descriptor.
dst: int
Destination file descriptor.
count: Py_ssize_t
Number of bytes to copy.
offset_src: object = None
Starting offset in src.
offset_dst: object = None
Starting offset in dst.
flags: unsigned_int = 0
Flags to modify the semantics of the call.
Transfer count bytes from one pipe to a descriptor or vice versa.
If offset_src is None, then src is read from the current position;
respectively for offset_dst. The offset associated to the file
descriptor that refers to a pipe must be None.
[clinic start generated code]*/
static PyObject *
os_splice_impl(PyObject *module, int src, int dst, Py_ssize_t count,
PyObject *offset_src, PyObject *offset_dst,
unsigned int flags)
/*[clinic end generated code: output=d0386f25a8519dc5 input=047527c66c6d2e0a]*/
{
off_t offset_src_val, offset_dst_val;
off_t *p_offset_src = NULL;
off_t *p_offset_dst = NULL;
Py_ssize_t ret;
int async_err = 0;
if (count < 0) {
PyErr_SetString(PyExc_ValueError, "negative value for 'count' not allowed");
return NULL;
}
if (offset_src != Py_None) {
if (!Py_off_t_converter(offset_src, &offset_src_val)) {
return NULL;
}
p_offset_src = &offset_src_val;
}
if (offset_dst != Py_None) {
if (!Py_off_t_converter(offset_dst, &offset_dst_val)) {
return NULL;
}
p_offset_dst = &offset_dst_val;
}
do {
Py_BEGIN_ALLOW_THREADS
ret = splice(src, p_offset_src, dst, p_offset_dst, count, flags);
Py_END_ALLOW_THREADS
} while (ret < 0 && errno == EINTR && !(async_err = PyErr_CheckSignals()));
if (ret < 0) {
return (!async_err) ? posix_error() : NULL;
}
return PyLong_FromSsize_t(ret);
}
#endif /* HAVE_SPLICE*/
#ifdef HAVE_MKFIFO
/*[clinic input]
os.mkfifo
path: path_t
mode: int=0o666
*
dir_fd: dir_fd(requires='mkfifoat')=None
Create a "fifo" (a POSIX named pipe).
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_mkfifo_impl(PyObject *module, path_t *path, int mode, int dir_fd)
/*[clinic end generated code: output=ce41cfad0e68c940 input=73032e98a36e0e19]*/
{
int result;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_MKFIFOAT
if (dir_fd != DEFAULT_DIR_FD)
result = mkfifoat(dir_fd, path->narrow, mode);
else
#endif
result = mkfifo(path->narrow, mode);
Py_END_ALLOW_THREADS
} while (result != 0 && errno == EINTR &&
!(async_err = PyErr_CheckSignals()));
if (result != 0)
return (!async_err) ? posix_error() : NULL;
Py_RETURN_NONE;
}
#endif /* HAVE_MKFIFO */
#if defined(HAVE_MKNOD) && defined(HAVE_MAKEDEV)
/*[clinic input]
os.mknod
path: path_t
mode: int=0o600
device: dev_t=0
*
dir_fd: dir_fd(requires='mknodat')=None
Create a node in the file system.
Create a node in the file system (file, device special file or named pipe)
at path. mode specifies both the permissions to use and the
type of node to be created, being combined (bitwise OR) with one of
S_IFREG, S_IFCHR, S_IFBLK, and S_IFIFO. If S_IFCHR or S_IFBLK is set on mode,
device defines the newly created device special file (probably using
os.makedev()). Otherwise device is ignored.
If dir_fd is not None, it should be a file descriptor open to a directory,
and path should be relative; path will then be relative to that directory.
dir_fd may not be implemented on your platform.
If it is unavailable, using it will raise a NotImplementedError.
[clinic start generated code]*/
static PyObject *
os_mknod_impl(PyObject *module, path_t *path, int mode, dev_t device,
int dir_fd)
/*[clinic end generated code: output=92e55d3ca8917461 input=ee44531551a4d83b]*/
{
int result;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_MKNODAT
if (dir_fd != DEFAULT_DIR_FD)
result = mknodat(dir_fd, path->narrow, mode, device);
else
#endif
result = mknod(path->narrow, mode, device);
Py_END_ALLOW_THREADS
} while (result != 0 && errno == EINTR &&
!(async_err = PyErr_CheckSignals()));
if (result != 0)
return (!async_err) ? posix_error() : NULL;
Py_RETURN_NONE;
}
#endif /* defined(HAVE_MKNOD) && defined(HAVE_MAKEDEV) */
#ifdef HAVE_DEVICE_MACROS
/*[clinic input]
os.major -> unsigned_int
device: dev_t
/
Extracts a device major number from a raw device number.
[clinic start generated code]*/
static unsigned int
os_major_impl(PyObject *module, dev_t device)
/*[clinic end generated code: output=5b3b2589bafb498e input=1e16a4d30c4d4462]*/
{
return major(device);
}
/*[clinic input]
os.minor -> unsigned_int
device: dev_t
/
Extracts a device minor number from a raw device number.
[clinic start generated code]*/
static unsigned int
os_minor_impl(PyObject *module, dev_t device)
/*[clinic end generated code: output=5e1a25e630b0157d input=0842c6d23f24c65e]*/
{
return minor(device);
}
/*[clinic input]
os.makedev -> dev_t
major: int
minor: int
/
Composes a raw device number from the major and minor device numbers.
[clinic start generated code]*/
static dev_t
os_makedev_impl(PyObject *module, int major, int minor)
/*[clinic end generated code: output=881aaa4aba6f6a52 input=4b9fd8fc73cbe48f]*/
{
return makedev(major, minor);
}
#endif /* HAVE_DEVICE_MACROS */
#if defined HAVE_FTRUNCATE || defined MS_WINDOWS
/*[clinic input]
os.ftruncate
fd: int
length: Py_off_t
/
Truncate a file, specified by file descriptor, to a specific length.
[clinic start generated code]*/
static PyObject *
os_ftruncate_impl(PyObject *module, int fd, Py_off_t length)
/*[clinic end generated code: output=fba15523721be7e4 input=63b43641e52818f2]*/
{
int result;
int async_err = 0;
if (PySys_Audit("os.truncate", "in", fd, length) < 0) {
return NULL;
}
do {
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
#ifdef MS_WINDOWS
result = _chsize_s(fd, length);
#else
result = ftruncate(fd, length);
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
} while (result != 0 && errno == EINTR &&
!(async_err = PyErr_CheckSignals()));
if (result != 0)
return (!async_err) ? posix_error() : NULL;
Py_RETURN_NONE;
}
#endif /* HAVE_FTRUNCATE || MS_WINDOWS */
#if defined HAVE_TRUNCATE || defined MS_WINDOWS
/*[clinic input]
os.truncate
path: path_t(allow_fd='PATH_HAVE_FTRUNCATE')
length: Py_off_t
Truncate a file, specified by path, to a specific length.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
[clinic start generated code]*/
static PyObject *
os_truncate_impl(PyObject *module, path_t *path, Py_off_t length)
/*[clinic end generated code: output=43009c8df5c0a12b input=77229cf0b50a9b77]*/
{
int result;
#ifdef MS_WINDOWS
int fd;
#endif
if (path->fd != -1)
return os_ftruncate_impl(module, path->fd, length);
if (PySys_Audit("os.truncate", "On", path->object, length) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
_Py_BEGIN_SUPPRESS_IPH
#ifdef MS_WINDOWS
fd = _wopen(path->wide, _O_WRONLY | _O_BINARY | _O_NOINHERIT);
if (fd < 0)
result = -1;
else {
result = _chsize_s(fd, length);
close(fd);
if (result < 0)
errno = result;
}
#else
result = truncate(path->narrow, length);
#endif
_Py_END_SUPPRESS_IPH
Py_END_ALLOW_THREADS
if (result < 0)
return posix_path_error(path);
Py_RETURN_NONE;
}
#endif /* HAVE_TRUNCATE || MS_WINDOWS */
/* Issue #22396: On 32-bit AIX platform, the prototypes of os.posix_fadvise()
and os.posix_fallocate() in system headers are wrong if _LARGE_FILES is
defined, which is the case in Python on AIX. AIX bug report:
http://www-01.ibm.com/support/docview.wss?uid=isg1IV56170 */
#if defined(_AIX) && defined(_LARGE_FILES) && !defined(__64BIT__)
# define POSIX_FADVISE_AIX_BUG
#endif
#if defined(HAVE_POSIX_FALLOCATE) && !defined(POSIX_FADVISE_AIX_BUG)
/*[clinic input]
os.posix_fallocate
fd: int
offset: Py_off_t
length: Py_off_t
/
Ensure a file has allocated at least a particular number of bytes on disk.
Ensure that the file specified by fd encompasses a range of bytes
starting at offset bytes from the beginning and continuing for length bytes.
[clinic start generated code]*/
static PyObject *
os_posix_fallocate_impl(PyObject *module, int fd, Py_off_t offset,
Py_off_t length)
/*[clinic end generated code: output=73f107139564aa9d input=d7a2ef0ab2ca52fb]*/
{
int result;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
result = posix_fallocate(fd, offset, length);
Py_END_ALLOW_THREADS
} while (result == EINTR && !(async_err = PyErr_CheckSignals()));
if (result == 0)
Py_RETURN_NONE;
if (async_err)
return NULL;
errno = result;
return posix_error();
}
#endif /* HAVE_POSIX_FALLOCATE) && !POSIX_FADVISE_AIX_BUG */
#if defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG)
/*[clinic input]
os.posix_fadvise
fd: int
offset: Py_off_t
length: Py_off_t
advice: int
/
Announce an intention to access data in a specific pattern.
Announce an intention to access data in a specific pattern, thus allowing
the kernel to make optimizations.
The advice applies to the region of the file specified by fd starting at
offset and continuing for length bytes.
advice is one of POSIX_FADV_NORMAL, POSIX_FADV_SEQUENTIAL,
POSIX_FADV_RANDOM, POSIX_FADV_NOREUSE, POSIX_FADV_WILLNEED, or
POSIX_FADV_DONTNEED.
[clinic start generated code]*/
static PyObject *
os_posix_fadvise_impl(PyObject *module, int fd, Py_off_t offset,
Py_off_t length, int advice)
/*[clinic end generated code: output=412ef4aa70c98642 input=0fbe554edc2f04b5]*/
{
int result;
int async_err = 0;
do {
Py_BEGIN_ALLOW_THREADS
result = posix_fadvise(fd, offset, length, advice);
Py_END_ALLOW_THREADS
} while (result == EINTR && !(async_err = PyErr_CheckSignals()));
if (result == 0)
Py_RETURN_NONE;
if (async_err)
return NULL;
errno = result;
return posix_error();
}
#endif /* HAVE_POSIX_FADVISE && !POSIX_FADVISE_AIX_BUG */
#ifdef MS_WINDOWS
static PyObject*
win32_putenv(PyObject *name, PyObject *value)
{
/* Search from index 1 because on Windows starting '=' is allowed for
defining hidden environment variables. */
if (PyUnicode_GET_LENGTH(name) == 0 ||
PyUnicode_FindChar(name, '=', 1, PyUnicode_GET_LENGTH(name), 1) != -1)
{
PyErr_SetString(PyExc_ValueError, "illegal environment variable name");
return NULL;
}
PyObject *unicode;
if (value != NULL) {
unicode = PyUnicode_FromFormat("%U=%U", name, value);
}
else {
unicode = PyUnicode_FromFormat("%U=", name);
}
if (unicode == NULL) {
return NULL;
}
Py_ssize_t size;
/* PyUnicode_AsWideCharString() rejects embedded null characters */
wchar_t *env = PyUnicode_AsWideCharString(unicode, &size);
Py_DECREF(unicode);
if (env == NULL) {
return NULL;
}
if (size > _MAX_ENV) {
PyErr_Format(PyExc_ValueError,
"the environment variable is longer than %u characters",
_MAX_ENV);
PyMem_Free(env);
return NULL;
}
/* _wputenv() and SetEnvironmentVariableW() update the environment in the
Process Environment Block (PEB). _wputenv() also updates CRT 'environ'
and '_wenviron' variables, whereas SetEnvironmentVariableW() does not.
Prefer _wputenv() to be compatible with C libraries using CRT
variables and CRT functions using these variables (ex: getenv()). */
int err = _wputenv(env);
PyMem_Free(env);
if (err) {
posix_error();
return NULL;
}
Py_RETURN_NONE;
}
#endif
#ifdef MS_WINDOWS
/*[clinic input]
os.putenv
name: unicode
value: unicode
/
Change or add an environment variable.
[clinic start generated code]*/
static PyObject *
os_putenv_impl(PyObject *module, PyObject *name, PyObject *value)
/*[clinic end generated code: output=d29a567d6b2327d2 input=ba586581c2e6105f]*/
{
if (PySys_Audit("os.putenv", "OO", name, value) < 0) {
return NULL;
}
return win32_putenv(name, value);
}
#else
/*[clinic input]
os.putenv
name: FSConverter
value: FSConverter
/
Change or add an environment variable.
[clinic start generated code]*/
static PyObject *
os_putenv_impl(PyObject *module, PyObject *name, PyObject *value)
/*[clinic end generated code: output=d29a567d6b2327d2 input=a97bc6152f688d31]*/
{
const char *name_string = PyBytes_AS_STRING(name);
const char *value_string = PyBytes_AS_STRING(value);
if (strchr(name_string, '=') != NULL) {
PyErr_SetString(PyExc_ValueError, "illegal environment variable name");
return NULL;
}
if (PySys_Audit("os.putenv", "OO", name, value) < 0) {
return NULL;
}
if (setenv(name_string, value_string, 1)) {
return posix_error();
}
Py_RETURN_NONE;
}
#endif /* !defined(MS_WINDOWS) */
#ifdef MS_WINDOWS
/*[clinic input]
os.unsetenv
name: unicode
/
Delete an environment variable.
[clinic start generated code]*/
static PyObject *
os_unsetenv_impl(PyObject *module, PyObject *name)
/*[clinic end generated code: output=54c4137ab1834f02 input=4d6a1747cc526d2f]*/
{
if (PySys_Audit("os.unsetenv", "(O)", name) < 0) {
return NULL;
}
return win32_putenv(name, NULL);
}
#else
/*[clinic input]
os.unsetenv
name: FSConverter
/
Delete an environment variable.
[clinic start generated code]*/
static PyObject *
os_unsetenv_impl(PyObject *module, PyObject *name)
/*[clinic end generated code: output=54c4137ab1834f02 input=2bb5288a599c7107]*/
{
if (PySys_Audit("os.unsetenv", "(O)", name) < 0) {
return NULL;
}
#ifdef HAVE_BROKEN_UNSETENV
unsetenv(PyBytes_AS_STRING(name));
#else
int err = unsetenv(PyBytes_AS_STRING(name));
if (err) {
return posix_error();
}
#endif
Py_RETURN_NONE;
}
#endif /* !MS_WINDOWS */
/*[clinic input]
os.strerror
code: int
/
Translate an error code to a message string.
[clinic start generated code]*/
static PyObject *
os_strerror_impl(PyObject *module, int code)
/*[clinic end generated code: output=baebf09fa02a78f2 input=75a8673d97915a91]*/
{
char *message = strerror(code);
if (message == NULL) {
PyErr_SetString(PyExc_ValueError,
"strerror() argument out of range");
return NULL;
}
return PyUnicode_DecodeLocale(message, "surrogateescape");
}
#ifdef HAVE_SYS_WAIT_H
#ifdef WCOREDUMP
/*[clinic input]
os.WCOREDUMP -> bool
status: int
/
Return True if the process returning status was dumped to a core file.
[clinic start generated code]*/
static int
os_WCOREDUMP_impl(PyObject *module, int status)
/*[clinic end generated code: output=1a584b147b16bd18 input=8b05e7ab38528d04]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WCOREDUMP(wait_status);
}
#endif /* WCOREDUMP */
#ifdef WIFCONTINUED
/*[clinic input]
os.WIFCONTINUED -> bool
status: int
Return True if a particular process was continued from a job control stop.
Return True if the process returning status was continued from a
job control stop.
[clinic start generated code]*/
static int
os_WIFCONTINUED_impl(PyObject *module, int status)
/*[clinic end generated code: output=1e35295d844364bd input=e777e7d38eb25bd9]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WIFCONTINUED(wait_status);
}
#endif /* WIFCONTINUED */
#ifdef WIFSTOPPED
/*[clinic input]
os.WIFSTOPPED -> bool
status: int
Return True if the process returning status was stopped.
[clinic start generated code]*/
static int
os_WIFSTOPPED_impl(PyObject *module, int status)
/*[clinic end generated code: output=fdb57122a5c9b4cb input=043cb7f1289ef904]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WIFSTOPPED(wait_status);
}
#endif /* WIFSTOPPED */
#ifdef WIFSIGNALED
/*[clinic input]
os.WIFSIGNALED -> bool
status: int
Return True if the process returning status was terminated by a signal.
[clinic start generated code]*/
static int
os_WIFSIGNALED_impl(PyObject *module, int status)
/*[clinic end generated code: output=d1dde4dcc819a5f5 input=d55ba7cc9ce5dc43]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WIFSIGNALED(wait_status);
}
#endif /* WIFSIGNALED */
#ifdef WIFEXITED
/*[clinic input]
os.WIFEXITED -> bool
status: int
Return True if the process returning status exited via the exit() system call.
[clinic start generated code]*/
static int
os_WIFEXITED_impl(PyObject *module, int status)
/*[clinic end generated code: output=01c09d6ebfeea397 input=d63775a6791586c0]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WIFEXITED(wait_status);
}
#endif /* WIFEXITED */
#ifdef WEXITSTATUS
/*[clinic input]
os.WEXITSTATUS -> int
status: int
Return the process return code from status.
[clinic start generated code]*/
static int
os_WEXITSTATUS_impl(PyObject *module, int status)
/*[clinic end generated code: output=6e3efbba11f6488d input=e1fb4944e377585b]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WEXITSTATUS(wait_status);
}
#endif /* WEXITSTATUS */
#ifdef WTERMSIG
/*[clinic input]
os.WTERMSIG -> int
status: int
Return the signal that terminated the process that provided the status value.
[clinic start generated code]*/
static int
os_WTERMSIG_impl(PyObject *module, int status)
/*[clinic end generated code: output=172f7dfc8dcfc3ad input=727fd7f84ec3f243]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WTERMSIG(wait_status);
}
#endif /* WTERMSIG */
#ifdef WSTOPSIG
/*[clinic input]
os.WSTOPSIG -> int
status: int
Return the signal that stopped the process that provided the status value.
[clinic start generated code]*/
static int
os_WSTOPSIG_impl(PyObject *module, int status)
/*[clinic end generated code: output=0ab7586396f5d82b input=46ebf1d1b293c5c1]*/
{
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
return WSTOPSIG(wait_status);
}
#endif /* WSTOPSIG */
#endif /* HAVE_SYS_WAIT_H */
#if defined(HAVE_FSTATVFS) && defined(HAVE_SYS_STATVFS_H)
#ifdef _SCO_DS
/* SCO OpenServer 5.0 and later requires _SVID3 before it reveals the
needed definitions in sys/statvfs.h */
#define _SVID3
#endif
#include <sys/statvfs.h>
static PyObject*
_pystatvfs_fromstructstatvfs(PyObject *module, struct statvfs st) {
PyObject *StatVFSResultType = get_posix_state(module)->StatVFSResultType;
PyObject *v = PyStructSequence_New((PyTypeObject *)StatVFSResultType);
if (v == NULL)
return NULL;
#if !defined(HAVE_LARGEFILE_SUPPORT)
PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long) st.f_bsize));
PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long) st.f_frsize));
PyStructSequence_SET_ITEM(v, 2, PyLong_FromLong((long) st.f_blocks));
PyStructSequence_SET_ITEM(v, 3, PyLong_FromLong((long) st.f_bfree));
PyStructSequence_SET_ITEM(v, 4, PyLong_FromLong((long) st.f_bavail));
PyStructSequence_SET_ITEM(v, 5, PyLong_FromLong((long) st.f_files));
PyStructSequence_SET_ITEM(v, 6, PyLong_FromLong((long) st.f_ffree));
PyStructSequence_SET_ITEM(v, 7, PyLong_FromLong((long) st.f_favail));
PyStructSequence_SET_ITEM(v, 8, PyLong_FromLong((long) st.f_flag));
PyStructSequence_SET_ITEM(v, 9, PyLong_FromLong((long) st.f_namemax));
#else
PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long) st.f_bsize));
PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long) st.f_frsize));
PyStructSequence_SET_ITEM(v, 2,
PyLong_FromLongLong((long long) st.f_blocks));
PyStructSequence_SET_ITEM(v, 3,
PyLong_FromLongLong((long long) st.f_bfree));
PyStructSequence_SET_ITEM(v, 4,
PyLong_FromLongLong((long long) st.f_bavail));
PyStructSequence_SET_ITEM(v, 5,
PyLong_FromLongLong((long long) st.f_files));
PyStructSequence_SET_ITEM(v, 6,
PyLong_FromLongLong((long long) st.f_ffree));
PyStructSequence_SET_ITEM(v, 7,
PyLong_FromLongLong((long long) st.f_favail));
PyStructSequence_SET_ITEM(v, 8, PyLong_FromLong((long) st.f_flag));
PyStructSequence_SET_ITEM(v, 9, PyLong_FromLong((long) st.f_namemax));
#endif
/* The _ALL_SOURCE feature test macro defines f_fsid as a structure
* (issue #32390). */
#if defined(_AIX) && defined(_ALL_SOURCE)
PyStructSequence_SET_ITEM(v, 10, PyLong_FromUnsignedLong(st.f_fsid.val[0]));
#else
PyStructSequence_SET_ITEM(v, 10, PyLong_FromUnsignedLong(st.f_fsid));
#endif
if (PyErr_Occurred()) {
Py_DECREF(v);
return NULL;
}
return v;
}
/*[clinic input]
os.fstatvfs
fd: int
/
Perform an fstatvfs system call on the given fd.
Equivalent to statvfs(fd).
[clinic start generated code]*/
static PyObject *
os_fstatvfs_impl(PyObject *module, int fd)
/*[clinic end generated code: output=53547cf0cc55e6c5 input=d8122243ac50975e]*/
{
int result;
int async_err = 0;
struct statvfs st;
do {
Py_BEGIN_ALLOW_THREADS
result = fstatvfs(fd, &st);
Py_END_ALLOW_THREADS
} while (result != 0 && errno == EINTR &&
!(async_err = PyErr_CheckSignals()));
if (result != 0)
return (!async_err) ? posix_error() : NULL;
return _pystatvfs_fromstructstatvfs(module, st);
}
#endif /* defined(HAVE_FSTATVFS) && defined(HAVE_SYS_STATVFS_H) */
#if defined(HAVE_STATVFS) && defined(HAVE_SYS_STATVFS_H)
#include <sys/statvfs.h>
/*[clinic input]
os.statvfs
path: path_t(allow_fd='PATH_HAVE_FSTATVFS')
Perform a statvfs system call on the given path.
path may always be specified as a string.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
[clinic start generated code]*/
static PyObject *
os_statvfs_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=87106dd1beb8556e input=3f5c35791c669bd9]*/
{
int result;
struct statvfs st;
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_FSTATVFS
if (path->fd != -1) {
result = fstatvfs(path->fd, &st);
}
else
#endif
result = statvfs(path->narrow, &st);
Py_END_ALLOW_THREADS
if (result) {
return path_error(path);
}
return _pystatvfs_fromstructstatvfs(module, st);
}
#endif /* defined(HAVE_STATVFS) && defined(HAVE_SYS_STATVFS_H) */
#ifdef MS_WINDOWS
/*[clinic input]
os._getdiskusage
path: path_t
Return disk usage statistics about the given path as a (total, free) tuple.
[clinic start generated code]*/
static PyObject *
os__getdiskusage_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=3bd3991f5e5c5dfb input=6af8d1b7781cc042]*/
{
BOOL retval;
ULARGE_INTEGER _, total, free;
DWORD err = 0;
Py_BEGIN_ALLOW_THREADS
retval = GetDiskFreeSpaceExW(path->wide, &_, &total, &free);
Py_END_ALLOW_THREADS
if (retval == 0) {
if (GetLastError() == ERROR_DIRECTORY) {
wchar_t *dir_path = NULL;
dir_path = PyMem_New(wchar_t, path->length + 1);
if (dir_path == NULL) {
return PyErr_NoMemory();
}
wcscpy_s(dir_path, path->length + 1, path->wide);
if (_dirnameW(dir_path) != -1) {
Py_BEGIN_ALLOW_THREADS
retval = GetDiskFreeSpaceExW(dir_path, &_, &total, &free);
Py_END_ALLOW_THREADS
}
/* Record the last error in case it's modified by PyMem_Free. */
err = GetLastError();
PyMem_Free(dir_path);
if (retval) {
goto success;
}
}
return PyErr_SetFromWindowsErr(err);
}
success:
return Py_BuildValue("(LL)", total.QuadPart, free.QuadPart);
}
#endif /* MS_WINDOWS */
/* This is used for fpathconf(), pathconf(), confstr() and sysconf().
* It maps strings representing configuration variable names to
* integer values, allowing those functions to be called with the
* magic names instead of polluting the module's namespace with tons of
* rarely-used constants. There are three separate tables that use
* these definitions.
*
* This code is always included, even if none of the interfaces that
* need it are included. The #if hackery needed to avoid it would be
* sufficiently pervasive that it's not worth the loss of readability.
*/
struct constdef {
const char *name;
int value;
};
static int
conv_confname(PyObject *arg, int *valuep, struct constdef *table,
size_t tablesize)
{
if (PyLong_Check(arg)) {
int value = _PyLong_AsInt(arg);
if (value == -1 && PyErr_Occurred())
return 0;
*valuep = value;
return 1;
}
else {
/* look up the value in the table using a binary search */
size_t lo = 0;
size_t mid;
size_t hi = tablesize;
int cmp;
const char *confname;
if (!PyUnicode_Check(arg)) {
PyErr_SetString(PyExc_TypeError,
"configuration names must be strings or integers");
return 0;
}
confname = PyUnicode_AsUTF8(arg);
if (confname == NULL)
return 0;
while (lo < hi) {
mid = (lo + hi) / 2;
cmp = strcmp(confname, table[mid].name);
if (cmp < 0)
hi = mid;
else if (cmp > 0)
lo = mid + 1;
else {
*valuep = table[mid].value;
return 1;
}
}
PyErr_SetString(PyExc_ValueError, "unrecognized configuration name");
return 0;
}
}
#if defined(HAVE_FPATHCONF) || defined(HAVE_PATHCONF)
static struct constdef posix_constants_pathconf[] = {
#ifdef _PC_ABI_AIO_XFER_MAX
{"PC_ABI_AIO_XFER_MAX", _PC_ABI_AIO_XFER_MAX},
#endif
#ifdef _PC_ABI_ASYNC_IO
{"PC_ABI_ASYNC_IO", _PC_ABI_ASYNC_IO},
#endif
#ifdef _PC_ASYNC_IO
{"PC_ASYNC_IO", _PC_ASYNC_IO},
#endif
#ifdef _PC_CHOWN_RESTRICTED
{"PC_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED},
#endif
#ifdef _PC_FILESIZEBITS
{"PC_FILESIZEBITS", _PC_FILESIZEBITS},
#endif
#ifdef _PC_LAST
{"PC_LAST", _PC_LAST},
#endif
#ifdef _PC_LINK_MAX
{"PC_LINK_MAX", _PC_LINK_MAX},
#endif
#ifdef _PC_MAX_CANON
{"PC_MAX_CANON", _PC_MAX_CANON},
#endif
#ifdef _PC_MAX_INPUT
{"PC_MAX_INPUT", _PC_MAX_INPUT},
#endif
#ifdef _PC_NAME_MAX
{"PC_NAME_MAX", _PC_NAME_MAX},
#endif
#ifdef _PC_NO_TRUNC
{"PC_NO_TRUNC", _PC_NO_TRUNC},
#endif
#ifdef _PC_PATH_MAX
{"PC_PATH_MAX", _PC_PATH_MAX},
#endif
#ifdef _PC_PIPE_BUF
{"PC_PIPE_BUF", _PC_PIPE_BUF},
#endif
#ifdef _PC_PRIO_IO
{"PC_PRIO_IO", _PC_PRIO_IO},
#endif
#ifdef _PC_SOCK_MAXBUF
{"PC_SOCK_MAXBUF", _PC_SOCK_MAXBUF},
#endif
#ifdef _PC_SYNC_IO
{"PC_SYNC_IO", _PC_SYNC_IO},
#endif
#ifdef _PC_VDISABLE
{"PC_VDISABLE", _PC_VDISABLE},
#endif
#ifdef _PC_ACL_ENABLED
{"PC_ACL_ENABLED", _PC_ACL_ENABLED},
#endif
#ifdef _PC_MIN_HOLE_SIZE
{"PC_MIN_HOLE_SIZE", _PC_MIN_HOLE_SIZE},
#endif
#ifdef _PC_ALLOC_SIZE_MIN
{"PC_ALLOC_SIZE_MIN", _PC_ALLOC_SIZE_MIN},
#endif
#ifdef _PC_REC_INCR_XFER_SIZE
{"PC_REC_INCR_XFER_SIZE", _PC_REC_INCR_XFER_SIZE},
#endif
#ifdef _PC_REC_MAX_XFER_SIZE
{"PC_REC_MAX_XFER_SIZE", _PC_REC_MAX_XFER_SIZE},
#endif
#ifdef _PC_REC_MIN_XFER_SIZE
{"PC_REC_MIN_XFER_SIZE", _PC_REC_MIN_XFER_SIZE},
#endif
#ifdef _PC_REC_XFER_ALIGN
{"PC_REC_XFER_ALIGN", _PC_REC_XFER_ALIGN},
#endif
#ifdef _PC_SYMLINK_MAX
{"PC_SYMLINK_MAX", _PC_SYMLINK_MAX},
#endif
#ifdef _PC_XATTR_ENABLED
{"PC_XATTR_ENABLED", _PC_XATTR_ENABLED},
#endif
#ifdef _PC_XATTR_EXISTS
{"PC_XATTR_EXISTS", _PC_XATTR_EXISTS},
#endif
#ifdef _PC_TIMESTAMP_RESOLUTION
{"PC_TIMESTAMP_RESOLUTION", _PC_TIMESTAMP_RESOLUTION},
#endif
};
static int
conv_path_confname(PyObject *arg, int *valuep)
{
return conv_confname(arg, valuep, posix_constants_pathconf,
sizeof(posix_constants_pathconf)
/ sizeof(struct constdef));
}
#endif
#ifdef HAVE_FPATHCONF
/*[clinic input]
os.fpathconf -> long
fd: fildes
name: path_confname
/
Return the configuration limit name for the file descriptor fd.
If there is no limit, return -1.
[clinic start generated code]*/
static long
os_fpathconf_impl(PyObject *module, int fd, int name)
/*[clinic end generated code: output=d5b7042425fc3e21 input=5b8d2471cfaae186]*/
{
long limit;
errno = 0;
limit = fpathconf(fd, name);
if (limit == -1 && errno != 0)
posix_error();
return limit;
}
#endif /* HAVE_FPATHCONF */
#ifdef HAVE_PATHCONF
/*[clinic input]
os.pathconf -> long
path: path_t(allow_fd='PATH_HAVE_FPATHCONF')
name: path_confname
Return the configuration limit name for the file or directory path.
If there is no limit, return -1.
On some platforms, path may also be specified as an open file descriptor.
If this functionality is unavailable, using it raises an exception.
[clinic start generated code]*/
static long
os_pathconf_impl(PyObject *module, path_t *path, int name)
/*[clinic end generated code: output=5bedee35b293a089 input=bc3e2a985af27e5e]*/
{
long limit;
errno = 0;
#ifdef HAVE_FPATHCONF
if (path->fd != -1)
limit = fpathconf(path->fd, name);
else
#endif
limit = pathconf(path->narrow, name);
if (limit == -1 && errno != 0) {
if (errno == EINVAL)
/* could be a path or name problem */
posix_error();
else
path_error(path);
}
return limit;
}
#endif /* HAVE_PATHCONF */
#ifdef HAVE_CONFSTR
static struct constdef posix_constants_confstr[] = {
#ifdef _CS_ARCHITECTURE
{"CS_ARCHITECTURE", _CS_ARCHITECTURE},
#endif
#ifdef _CS_GNU_LIBC_VERSION
{"CS_GNU_LIBC_VERSION", _CS_GNU_LIBC_VERSION},
#endif
#ifdef _CS_GNU_LIBPTHREAD_VERSION
{"CS_GNU_LIBPTHREAD_VERSION", _CS_GNU_LIBPTHREAD_VERSION},
#endif
#ifdef _CS_HOSTNAME
{"CS_HOSTNAME", _CS_HOSTNAME},
#endif
#ifdef _CS_HW_PROVIDER
{"CS_HW_PROVIDER", _CS_HW_PROVIDER},
#endif
#ifdef _CS_HW_SERIAL
{"CS_HW_SERIAL", _CS_HW_SERIAL},
#endif
#ifdef _CS_INITTAB_NAME
{"CS_INITTAB_NAME", _CS_INITTAB_NAME},
#endif
#ifdef _CS_LFS64_CFLAGS
{"CS_LFS64_CFLAGS", _CS_LFS64_CFLAGS},
#endif
#ifdef _CS_LFS64_LDFLAGS
{"CS_LFS64_LDFLAGS", _CS_LFS64_LDFLAGS},
#endif
#ifdef _CS_LFS64_LIBS
{"CS_LFS64_LIBS", _CS_LFS64_LIBS},
#endif
#ifdef _CS_LFS64_LINTFLAGS
{"CS_LFS64_LINTFLAGS", _CS_LFS64_LINTFLAGS},
#endif
#ifdef _CS_LFS_CFLAGS
{"CS_LFS_CFLAGS", _CS_LFS_CFLAGS},
#endif
#ifdef _CS_LFS_LDFLAGS
{"CS_LFS_LDFLAGS", _CS_LFS_LDFLAGS},
#endif
#ifdef _CS_LFS_LIBS
{"CS_LFS_LIBS", _CS_LFS_LIBS},
#endif
#ifdef _CS_LFS_LINTFLAGS
{"CS_LFS_LINTFLAGS", _CS_LFS_LINTFLAGS},
#endif
#ifdef _CS_MACHINE
{"CS_MACHINE", _CS_MACHINE},
#endif
#ifdef _CS_PATH
{"CS_PATH", _CS_PATH},
#endif
#ifdef _CS_RELEASE
{"CS_RELEASE", _CS_RELEASE},
#endif
#ifdef _CS_SRPC_DOMAIN
{"CS_SRPC_DOMAIN", _CS_SRPC_DOMAIN},
#endif
#ifdef _CS_SYSNAME
{"CS_SYSNAME", _CS_SYSNAME},
#endif
#ifdef _CS_VERSION
{"CS_VERSION", _CS_VERSION},
#endif
#ifdef _CS_XBS5_ILP32_OFF32_CFLAGS
{"CS_XBS5_ILP32_OFF32_CFLAGS", _CS_XBS5_ILP32_OFF32_CFLAGS},
#endif
#ifdef _CS_XBS5_ILP32_OFF32_LDFLAGS
{"CS_XBS5_ILP32_OFF32_LDFLAGS", _CS_XBS5_ILP32_OFF32_LDFLAGS},
#endif
#ifdef _CS_XBS5_ILP32_OFF32_LIBS
{"CS_XBS5_ILP32_OFF32_LIBS", _CS_XBS5_ILP32_OFF32_LIBS},
#endif
#ifdef _CS_XBS5_ILP32_OFF32_LINTFLAGS
{"CS_XBS5_ILP32_OFF32_LINTFLAGS", _CS_XBS5_ILP32_OFF32_LINTFLAGS},
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_CFLAGS
{"CS_XBS5_ILP32_OFFBIG_CFLAGS", _CS_XBS5_ILP32_OFFBIG_CFLAGS},
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_LDFLAGS
{"CS_XBS5_ILP32_OFFBIG_LDFLAGS", _CS_XBS5_ILP32_OFFBIG_LDFLAGS},
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_LIBS
{"CS_XBS5_ILP32_OFFBIG_LIBS", _CS_XBS5_ILP32_OFFBIG_LIBS},
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_LINTFLAGS
{"CS_XBS5_ILP32_OFFBIG_LINTFLAGS", _CS_XBS5_ILP32_OFFBIG_LINTFLAGS},
#endif
#ifdef _CS_XBS5_LP64_OFF64_CFLAGS
{"CS_XBS5_LP64_OFF64_CFLAGS", _CS_XBS5_LP64_OFF64_CFLAGS},
#endif
#ifdef _CS_XBS5_LP64_OFF64_LDFLAGS
{"CS_XBS5_LP64_OFF64_LDFLAGS", _CS_XBS5_LP64_OFF64_LDFLAGS},
#endif
#ifdef _CS_XBS5_LP64_OFF64_LIBS
{"CS_XBS5_LP64_OFF64_LIBS", _CS_XBS5_LP64_OFF64_LIBS},
#endif
#ifdef _CS_XBS5_LP64_OFF64_LINTFLAGS
{"CS_XBS5_LP64_OFF64_LINTFLAGS", _CS_XBS5_LP64_OFF64_LINTFLAGS},
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_CFLAGS
{"CS_XBS5_LPBIG_OFFBIG_CFLAGS", _CS_XBS5_LPBIG_OFFBIG_CFLAGS},
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_LDFLAGS
{"CS_XBS5_LPBIG_OFFBIG_LDFLAGS", _CS_XBS5_LPBIG_OFFBIG_LDFLAGS},
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_LIBS
{"CS_XBS5_LPBIG_OFFBIG_LIBS", _CS_XBS5_LPBIG_OFFBIG_LIBS},
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS
{"CS_XBS5_LPBIG_OFFBIG_LINTFLAGS", _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS},
#endif
#ifdef _MIPS_CS_AVAIL_PROCESSORS
{"MIPS_CS_AVAIL_PROCESSORS", _MIPS_CS_AVAIL_PROCESSORS},
#endif
#ifdef _MIPS_CS_BASE
{"MIPS_CS_BASE", _MIPS_CS_BASE},
#endif
#ifdef _MIPS_CS_HOSTID
{"MIPS_CS_HOSTID", _MIPS_CS_HOSTID},
#endif
#ifdef _MIPS_CS_HW_NAME
{"MIPS_CS_HW_NAME", _MIPS_CS_HW_NAME},
#endif
#ifdef _MIPS_CS_NUM_PROCESSORS
{"MIPS_CS_NUM_PROCESSORS", _MIPS_CS_NUM_PROCESSORS},
#endif
#ifdef _MIPS_CS_OSREL_MAJ
{"MIPS_CS_OSREL_MAJ", _MIPS_CS_OSREL_MAJ},
#endif
#ifdef _MIPS_CS_OSREL_MIN
{"MIPS_CS_OSREL_MIN", _MIPS_CS_OSREL_MIN},
#endif
#ifdef _MIPS_CS_OSREL_PATCH
{"MIPS_CS_OSREL_PATCH", _MIPS_CS_OSREL_PATCH},
#endif
#ifdef _MIPS_CS_OS_NAME
{"MIPS_CS_OS_NAME", _MIPS_CS_OS_NAME},
#endif
#ifdef _MIPS_CS_OS_PROVIDER
{"MIPS_CS_OS_PROVIDER", _MIPS_CS_OS_PROVIDER},
#endif
#ifdef _MIPS_CS_PROCESSORS
{"MIPS_CS_PROCESSORS", _MIPS_CS_PROCESSORS},
#endif
#ifdef _MIPS_CS_SERIAL
{"MIPS_CS_SERIAL", _MIPS_CS_SERIAL},
#endif
#ifdef _MIPS_CS_VENDOR
{"MIPS_CS_VENDOR", _MIPS_CS_VENDOR},
#endif
};
static int
conv_confstr_confname(PyObject *arg, int *valuep)
{
return conv_confname(arg, valuep, posix_constants_confstr,
sizeof(posix_constants_confstr)
/ sizeof(struct constdef));
}
/*[clinic input]
os.confstr
name: confstr_confname
/
Return a string-valued system configuration variable.
[clinic start generated code]*/
static PyObject *
os_confstr_impl(PyObject *module, int name)
/*[clinic end generated code: output=bfb0b1b1e49b9383 input=18fb4d0567242e65]*/
{
PyObject *result = NULL;
char buffer[255];
size_t len;
errno = 0;
len = confstr(name, buffer, sizeof(buffer));
if (len == 0) {
if (errno) {
posix_error();
return NULL;
}
else {
Py_RETURN_NONE;
}
}
if (len >= sizeof(buffer)) {
size_t len2;
char *buf = PyMem_Malloc(len);
if (buf == NULL)
return PyErr_NoMemory();
len2 = confstr(name, buf, len);
assert(len == len2);
result = PyUnicode_DecodeFSDefaultAndSize(buf, len2-1);
PyMem_Free(buf);
}
else
result = PyUnicode_DecodeFSDefaultAndSize(buffer, len-1);
return result;
}
#endif /* HAVE_CONFSTR */
#ifdef HAVE_SYSCONF
static struct constdef posix_constants_sysconf[] = {
#ifdef _SC_2_CHAR_TERM
{"SC_2_CHAR_TERM", _SC_2_CHAR_TERM},
#endif
#ifdef _SC_2_C_BIND
{"SC_2_C_BIND", _SC_2_C_BIND},
#endif
#ifdef _SC_2_C_DEV
{"SC_2_C_DEV", _SC_2_C_DEV},
#endif
#ifdef _SC_2_C_VERSION
{"SC_2_C_VERSION", _SC_2_C_VERSION},
#endif
#ifdef _SC_2_FORT_DEV
{"SC_2_FORT_DEV", _SC_2_FORT_DEV},
#endif
#ifdef _SC_2_FORT_RUN
{"SC_2_FORT_RUN", _SC_2_FORT_RUN},
#endif
#ifdef _SC_2_LOCALEDEF
{"SC_2_LOCALEDEF", _SC_2_LOCALEDEF},
#endif
#ifdef _SC_2_SW_DEV
{"SC_2_SW_DEV", _SC_2_SW_DEV},
#endif
#ifdef _SC_2_UPE
{"SC_2_UPE", _SC_2_UPE},
#endif
#ifdef _SC_2_VERSION
{"SC_2_VERSION", _SC_2_VERSION},
#endif
#ifdef _SC_ABI_ASYNCHRONOUS_IO
{"SC_ABI_ASYNCHRONOUS_IO", _SC_ABI_ASYNCHRONOUS_IO},
#endif
#ifdef _SC_ACL
{"SC_ACL", _SC_ACL},
#endif
#ifdef _SC_AIO_LISTIO_MAX
{"SC_AIO_LISTIO_MAX", _SC_AIO_LISTIO_MAX},
#endif
#ifdef _SC_AIO_MAX
{"SC_AIO_MAX", _SC_AIO_MAX},
#endif
#ifdef _SC_AIO_PRIO_DELTA_MAX
{"SC_AIO_PRIO_DELTA_MAX", _SC_AIO_PRIO_DELTA_MAX},
#endif
#ifdef _SC_ARG_MAX
{"SC_ARG_MAX", _SC_ARG_MAX},
#endif
#ifdef _SC_ASYNCHRONOUS_IO
{"SC_ASYNCHRONOUS_IO", _SC_ASYNCHRONOUS_IO},
#endif
#ifdef _SC_ATEXIT_MAX
{"SC_ATEXIT_MAX", _SC_ATEXIT_MAX},
#endif
#ifdef _SC_AUDIT
{"SC_AUDIT", _SC_AUDIT},
#endif
#ifdef _SC_AVPHYS_PAGES
{"SC_AVPHYS_PAGES", _SC_AVPHYS_PAGES},
#endif
#ifdef _SC_BC_BASE_MAX
{"SC_BC_BASE_MAX", _SC_BC_BASE_MAX},
#endif
#ifdef _SC_BC_DIM_MAX
{"SC_BC_DIM_MAX", _SC_BC_DIM_MAX},
#endif
#ifdef _SC_BC_SCALE_MAX
{"SC_BC_SCALE_MAX", _SC_BC_SCALE_MAX},
#endif
#ifdef _SC_BC_STRING_MAX
{"SC_BC_STRING_MAX", _SC_BC_STRING_MAX},
#endif
#ifdef _SC_CAP
{"SC_CAP", _SC_CAP},
#endif
#ifdef _SC_CHARCLASS_NAME_MAX
{"SC_CHARCLASS_NAME_MAX", _SC_CHARCLASS_NAME_MAX},
#endif
#ifdef _SC_CHAR_BIT
{"SC_CHAR_BIT", _SC_CHAR_BIT},
#endif
#ifdef _SC_CHAR_MAX
{"SC_CHAR_MAX", _SC_CHAR_MAX},
#endif
#ifdef _SC_CHAR_MIN
{"SC_CHAR_MIN", _SC_CHAR_MIN},
#endif
#ifdef _SC_CHILD_MAX
{"SC_CHILD_MAX", _SC_CHILD_MAX},
#endif
#ifdef _SC_CLK_TCK
{"SC_CLK_TCK", _SC_CLK_TCK},
#endif
#ifdef _SC_COHER_BLKSZ
{"SC_COHER_BLKSZ", _SC_COHER_BLKSZ},
#endif
#ifdef _SC_COLL_WEIGHTS_MAX
{"SC_COLL_WEIGHTS_MAX", _SC_COLL_WEIGHTS_MAX},
#endif
#ifdef _SC_DCACHE_ASSOC
{"SC_DCACHE_ASSOC", _SC_DCACHE_ASSOC},
#endif
#ifdef _SC_DCACHE_BLKSZ
{"SC_DCACHE_BLKSZ", _SC_DCACHE_BLKSZ},
#endif
#ifdef _SC_DCACHE_LINESZ
{"SC_DCACHE_LINESZ", _SC_DCACHE_LINESZ},
#endif
#ifdef _SC_DCACHE_SZ
{"SC_DCACHE_SZ", _SC_DCACHE_SZ},
#endif
#ifdef _SC_DCACHE_TBLKSZ
{"SC_DCACHE_TBLKSZ", _SC_DCACHE_TBLKSZ},
#endif
#ifdef _SC_DELAYTIMER_MAX
{"SC_DELAYTIMER_MAX", _SC_DELAYTIMER_MAX},
#endif
#ifdef _SC_EQUIV_CLASS_MAX
{"SC_EQUIV_CLASS_MAX", _SC_EQUIV_CLASS_MAX},
#endif
#ifdef _SC_EXPR_NEST_MAX
{"SC_EXPR_NEST_MAX", _SC_EXPR_NEST_MAX},
#endif
#ifdef _SC_FSYNC
{"SC_FSYNC", _SC_FSYNC},
#endif
#ifdef _SC_GETGR_R_SIZE_MAX
{"SC_GETGR_R_SIZE_MAX", _SC_GETGR_R_SIZE_MAX},
#endif
#ifdef _SC_GETPW_R_SIZE_MAX
{"SC_GETPW_R_SIZE_MAX", _SC_GETPW_R_SIZE_MAX},
#endif
#ifdef _SC_ICACHE_ASSOC
{"SC_ICACHE_ASSOC", _SC_ICACHE_ASSOC},
#endif
#ifdef _SC_ICACHE_BLKSZ
{"SC_ICACHE_BLKSZ", _SC_ICACHE_BLKSZ},
#endif
#ifdef _SC_ICACHE_LINESZ
{"SC_ICACHE_LINESZ", _SC_ICACHE_LINESZ},
#endif
#ifdef _SC_ICACHE_SZ
{"SC_ICACHE_SZ", _SC_ICACHE_SZ},
#endif
#ifdef _SC_INF
{"SC_INF", _SC_INF},
#endif
#ifdef _SC_INT_MAX
{"SC_INT_MAX", _SC_INT_MAX},
#endif
#ifdef _SC_INT_MIN
{"SC_INT_MIN", _SC_INT_MIN},
#endif
#ifdef _SC_IOV_MAX
{"SC_IOV_MAX", _SC_IOV_MAX},
#endif
#ifdef _SC_IP_SECOPTS
{"SC_IP_SECOPTS", _SC_IP_SECOPTS},
#endif
#ifdef _SC_JOB_CONTROL
{"SC_JOB_CONTROL", _SC_JOB_CONTROL},
#endif
#ifdef _SC_KERN_POINTERS
{"SC_KERN_POINTERS", _SC_KERN_POINTERS},
#endif
#ifdef _SC_KERN_SIM
{"SC_KERN_SIM", _SC_KERN_SIM},
#endif
#ifdef _SC_LINE_MAX
{"SC_LINE_MAX", _SC_LINE_MAX},
#endif
#ifdef _SC_LOGIN_NAME_MAX
{"SC_LOGIN_NAME_MAX", _SC_LOGIN_NAME_MAX},
#endif
#ifdef _SC_LOGNAME_MAX
{"SC_LOGNAME_MAX", _SC_LOGNAME_MAX},
#endif
#ifdef _SC_LONG_BIT
{"SC_LONG_BIT", _SC_LONG_BIT},
#endif
#ifdef _SC_MAC
{"SC_MAC", _SC_MAC},
#endif
#ifdef _SC_MAPPED_FILES
{"SC_MAPPED_FILES", _SC_MAPPED_FILES},
#endif
#ifdef _SC_MAXPID
{"SC_MAXPID", _SC_MAXPID},
#endif
#ifdef _SC_MB_LEN_MAX
{"SC_MB_LEN_MAX", _SC_MB_LEN_MAX},
#endif
#ifdef _SC_MEMLOCK
{"SC_MEMLOCK", _SC_MEMLOCK},
#endif
#ifdef _SC_MEMLOCK_RANGE
{"SC_MEMLOCK_RANGE", _SC_MEMLOCK_RANGE},
#endif
#ifdef _SC_MEMORY_PROTECTION
{"SC_MEMORY_PROTECTION", _SC_MEMORY_PROTECTION},
#endif
#ifdef _SC_MESSAGE_PASSING
{"SC_MESSAGE_PASSING", _SC_MESSAGE_PASSING},
#endif
#ifdef _SC_MMAP_FIXED_ALIGNMENT
{"SC_MMAP_FIXED_ALIGNMENT", _SC_MMAP_FIXED_ALIGNMENT},
#endif
#ifdef _SC_MQ_OPEN_MAX
{"SC_MQ_OPEN_MAX", _SC_MQ_OPEN_MAX},
#endif
#ifdef _SC_MQ_PRIO_MAX
{"SC_MQ_PRIO_MAX", _SC_MQ_PRIO_MAX},
#endif
#ifdef _SC_NACLS_MAX
{"SC_NACLS_MAX", _SC_NACLS_MAX},
#endif
#ifdef _SC_NGROUPS_MAX
{"SC_NGROUPS_MAX", _SC_NGROUPS_MAX},
#endif
#ifdef _SC_NL_ARGMAX
{"SC_NL_ARGMAX", _SC_NL_ARGMAX},
#endif
#ifdef _SC_NL_LANGMAX
{"SC_NL_LANGMAX", _SC_NL_LANGMAX},
#endif
#ifdef _SC_NL_MSGMAX
{"SC_NL_MSGMAX", _SC_NL_MSGMAX},
#endif
#ifdef _SC_NL_NMAX
{"SC_NL_NMAX", _SC_NL_NMAX},
#endif
#ifdef _SC_NL_SETMAX
{"SC_NL_SETMAX", _SC_NL_SETMAX},
#endif
#ifdef _SC_NL_TEXTMAX
{"SC_NL_TEXTMAX", _SC_NL_TEXTMAX},
#endif
#ifdef _SC_NPROCESSORS_CONF
{"SC_NPROCESSORS_CONF", _SC_NPROCESSORS_CONF},
#endif
#ifdef _SC_NPROCESSORS_ONLN
{"SC_NPROCESSORS_ONLN", _SC_NPROCESSORS_ONLN},
#endif
#ifdef _SC_NPROC_CONF
{"SC_NPROC_CONF", _SC_NPROC_CONF},
#endif
#ifdef _SC_NPROC_ONLN
{"SC_NPROC_ONLN", _SC_NPROC_ONLN},
#endif
#ifdef _SC_NZERO
{"SC_NZERO", _SC_NZERO},
#endif
#ifdef _SC_OPEN_MAX
{"SC_OPEN_MAX", _SC_OPEN_MAX},
#endif
#ifdef _SC_PAGESIZE
{"SC_PAGESIZE", _SC_PAGESIZE},
#endif
#ifdef _SC_PAGE_SIZE
{"SC_PAGE_SIZE", _SC_PAGE_SIZE},
#endif
#ifdef _SC_AIX_REALMEM
{"SC_AIX_REALMEM", _SC_AIX_REALMEM},
#endif
#ifdef _SC_PASS_MAX
{"SC_PASS_MAX", _SC_PASS_MAX},
#endif
#ifdef _SC_PHYS_PAGES
{"SC_PHYS_PAGES", _SC_PHYS_PAGES},
#endif
#ifdef _SC_PII
{"SC_PII", _SC_PII},
#endif
#ifdef _SC_PII_INTERNET
{"SC_PII_INTERNET", _SC_PII_INTERNET},
#endif
#ifdef _SC_PII_INTERNET_DGRAM
{"SC_PII_INTERNET_DGRAM", _SC_PII_INTERNET_DGRAM},
#endif
#ifdef _SC_PII_INTERNET_STREAM
{"SC_PII_INTERNET_STREAM", _SC_PII_INTERNET_STREAM},
#endif
#ifdef _SC_PII_OSI
{"SC_PII_OSI", _SC_PII_OSI},
#endif
#ifdef _SC_PII_OSI_CLTS
{"SC_PII_OSI_CLTS", _SC_PII_OSI_CLTS},
#endif
#ifdef _SC_PII_OSI_COTS
{"SC_PII_OSI_COTS", _SC_PII_OSI_COTS},
#endif
#ifdef _SC_PII_OSI_M
{"SC_PII_OSI_M", _SC_PII_OSI_M},
#endif
#ifdef _SC_PII_SOCKET
{"SC_PII_SOCKET", _SC_PII_SOCKET},
#endif
#ifdef _SC_PII_XTI
{"SC_PII_XTI", _SC_PII_XTI},
#endif
#ifdef _SC_POLL
{"SC_POLL", _SC_POLL},
#endif
#ifdef _SC_PRIORITIZED_IO
{"SC_PRIORITIZED_IO", _SC_PRIORITIZED_IO},
#endif
#ifdef _SC_PRIORITY_SCHEDULING
{"SC_PRIORITY_SCHEDULING", _SC_PRIORITY_SCHEDULING},
#endif
#ifdef _SC_REALTIME_SIGNALS
{"SC_REALTIME_SIGNALS", _SC_REALTIME_SIGNALS},
#endif
#ifdef _SC_RE_DUP_MAX
{"SC_RE_DUP_MAX", _SC_RE_DUP_MAX},
#endif
#ifdef _SC_RTSIG_MAX
{"SC_RTSIG_MAX", _SC_RTSIG_MAX},
#endif
#ifdef _SC_SAVED_IDS
{"SC_SAVED_IDS", _SC_SAVED_IDS},
#endif
#ifdef _SC_SCHAR_MAX
{"SC_SCHAR_MAX", _SC_SCHAR_MAX},
#endif
#ifdef _SC_SCHAR_MIN
{"SC_SCHAR_MIN", _SC_SCHAR_MIN},
#endif
#ifdef _SC_SELECT
{"SC_SELECT", _SC_SELECT},
#endif
#ifdef _SC_SEMAPHORES
{"SC_SEMAPHORES", _SC_SEMAPHORES},
#endif
#ifdef _SC_SEM_NSEMS_MAX
{"SC_SEM_NSEMS_MAX", _SC_SEM_NSEMS_MAX},
#endif
#ifdef _SC_SEM_VALUE_MAX
{"SC_SEM_VALUE_MAX", _SC_SEM_VALUE_MAX},
#endif
#ifdef _SC_SHARED_MEMORY_OBJECTS
{"SC_SHARED_MEMORY_OBJECTS", _SC_SHARED_MEMORY_OBJECTS},
#endif
#ifdef _SC_SHRT_MAX
{"SC_SHRT_MAX", _SC_SHRT_MAX},
#endif
#ifdef _SC_SHRT_MIN
{"SC_SHRT_MIN", _SC_SHRT_MIN},
#endif
#ifdef _SC_SIGQUEUE_MAX
{"SC_SIGQUEUE_MAX", _SC_SIGQUEUE_MAX},
#endif
#ifdef _SC_SIGRT_MAX
{"SC_SIGRT_MAX", _SC_SIGRT_MAX},
#endif
#ifdef _SC_SIGRT_MIN
{"SC_SIGRT_MIN", _SC_SIGRT_MIN},
#endif
#ifdef _SC_SOFTPOWER
{"SC_SOFTPOWER", _SC_SOFTPOWER},
#endif
#ifdef _SC_SPLIT_CACHE
{"SC_SPLIT_CACHE", _SC_SPLIT_CACHE},
#endif
#ifdef _SC_SSIZE_MAX
{"SC_SSIZE_MAX", _SC_SSIZE_MAX},
#endif
#ifdef _SC_STACK_PROT
{"SC_STACK_PROT", _SC_STACK_PROT},
#endif
#ifdef _SC_STREAM_MAX
{"SC_STREAM_MAX", _SC_STREAM_MAX},
#endif
#ifdef _SC_SYNCHRONIZED_IO
{"SC_SYNCHRONIZED_IO", _SC_SYNCHRONIZED_IO},
#endif
#ifdef _SC_THREADS
{"SC_THREADS", _SC_THREADS},
#endif
#ifdef _SC_THREAD_ATTR_STACKADDR
{"SC_THREAD_ATTR_STACKADDR", _SC_THREAD_ATTR_STACKADDR},
#endif
#ifdef _SC_THREAD_ATTR_STACKSIZE
{"SC_THREAD_ATTR_STACKSIZE", _SC_THREAD_ATTR_STACKSIZE},
#endif
#ifdef _SC_THREAD_DESTRUCTOR_ITERATIONS
{"SC_THREAD_DESTRUCTOR_ITERATIONS", _SC_THREAD_DESTRUCTOR_ITERATIONS},
#endif
#ifdef _SC_THREAD_KEYS_MAX
{"SC_THREAD_KEYS_MAX", _SC_THREAD_KEYS_MAX},
#endif
#ifdef _SC_THREAD_PRIORITY_SCHEDULING
{"SC_THREAD_PRIORITY_SCHEDULING", _SC_THREAD_PRIORITY_SCHEDULING},
#endif
#ifdef _SC_THREAD_PRIO_INHERIT
{"SC_THREAD_PRIO_INHERIT", _SC_THREAD_PRIO_INHERIT},
#endif
#ifdef _SC_THREAD_PRIO_PROTECT
{"SC_THREAD_PRIO_PROTECT", _SC_THREAD_PRIO_PROTECT},
#endif
#ifdef _SC_THREAD_PROCESS_SHARED
{"SC_THREAD_PROCESS_SHARED", _SC_THREAD_PROCESS_SHARED},
#endif
#ifdef _SC_THREAD_SAFE_FUNCTIONS
{"SC_THREAD_SAFE_FUNCTIONS", _SC_THREAD_SAFE_FUNCTIONS},
#endif
#ifdef _SC_THREAD_STACK_MIN
{"SC_THREAD_STACK_MIN", _SC_THREAD_STACK_MIN},
#endif
#ifdef _SC_THREAD_THREADS_MAX
{"SC_THREAD_THREADS_MAX", _SC_THREAD_THREADS_MAX},
#endif
#ifdef _SC_TIMERS
{"SC_TIMERS", _SC_TIMERS},
#endif
#ifdef _SC_TIMER_MAX
{"SC_TIMER_MAX", _SC_TIMER_MAX},
#endif
#ifdef _SC_TTY_NAME_MAX
{"SC_TTY_NAME_MAX", _SC_TTY_NAME_MAX},
#endif
#ifdef _SC_TZNAME_MAX
{"SC_TZNAME_MAX", _SC_TZNAME_MAX},
#endif
#ifdef _SC_T_IOV_MAX
{"SC_T_IOV_MAX", _SC_T_IOV_MAX},
#endif
#ifdef _SC_UCHAR_MAX
{"SC_UCHAR_MAX", _SC_UCHAR_MAX},
#endif
#ifdef _SC_UINT_MAX
{"SC_UINT_MAX", _SC_UINT_MAX},
#endif
#ifdef _SC_UIO_MAXIOV
{"SC_UIO_MAXIOV", _SC_UIO_MAXIOV},
#endif
#ifdef _SC_ULONG_MAX
{"SC_ULONG_MAX", _SC_ULONG_MAX},
#endif
#ifdef _SC_USHRT_MAX
{"SC_USHRT_MAX", _SC_USHRT_MAX},
#endif
#ifdef _SC_VERSION
{"SC_VERSION", _SC_VERSION},
#endif
#ifdef _SC_WORD_BIT
{"SC_WORD_BIT", _SC_WORD_BIT},
#endif
#ifdef _SC_XBS5_ILP32_OFF32
{"SC_XBS5_ILP32_OFF32", _SC_XBS5_ILP32_OFF32},
#endif
#ifdef _SC_XBS5_ILP32_OFFBIG
{"SC_XBS5_ILP32_OFFBIG", _SC_XBS5_ILP32_OFFBIG},
#endif
#ifdef _SC_XBS5_LP64_OFF64
{"SC_XBS5_LP64_OFF64", _SC_XBS5_LP64_OFF64},
#endif
#ifdef _SC_XBS5_LPBIG_OFFBIG
{"SC_XBS5_LPBIG_OFFBIG", _SC_XBS5_LPBIG_OFFBIG},
#endif
#ifdef _SC_XOPEN_CRYPT
{"SC_XOPEN_CRYPT", _SC_XOPEN_CRYPT},
#endif
#ifdef _SC_XOPEN_ENH_I18N
{"SC_XOPEN_ENH_I18N", _SC_XOPEN_ENH_I18N},
#endif
#ifdef _SC_XOPEN_LEGACY
{"SC_XOPEN_LEGACY", _SC_XOPEN_LEGACY},
#endif
#ifdef _SC_XOPEN_REALTIME
{"SC_XOPEN_REALTIME", _SC_XOPEN_REALTIME},
#endif
#ifdef _SC_XOPEN_REALTIME_THREADS
{"SC_XOPEN_REALTIME_THREADS", _SC_XOPEN_REALTIME_THREADS},
#endif
#ifdef _SC_XOPEN_SHM
{"SC_XOPEN_SHM", _SC_XOPEN_SHM},
#endif
#ifdef _SC_XOPEN_UNIX
{"SC_XOPEN_UNIX", _SC_XOPEN_UNIX},
#endif
#ifdef _SC_XOPEN_VERSION
{"SC_XOPEN_VERSION", _SC_XOPEN_VERSION},
#endif
#ifdef _SC_XOPEN_XCU_VERSION
{"SC_XOPEN_XCU_VERSION", _SC_XOPEN_XCU_VERSION},
#endif
#ifdef _SC_XOPEN_XPG2
{"SC_XOPEN_XPG2", _SC_XOPEN_XPG2},
#endif
#ifdef _SC_XOPEN_XPG3
{"SC_XOPEN_XPG3", _SC_XOPEN_XPG3},
#endif
#ifdef _SC_XOPEN_XPG4
{"SC_XOPEN_XPG4", _SC_XOPEN_XPG4},
#endif
#ifdef _SC_MINSIGSTKSZ
{"SC_MINSIGSTKSZ", _SC_MINSIGSTKSZ},
#endif
};
static int
conv_sysconf_confname(PyObject *arg, int *valuep)
{
return conv_confname(arg, valuep, posix_constants_sysconf,
sizeof(posix_constants_sysconf)
/ sizeof(struct constdef));
}
/*[clinic input]
os.sysconf -> long
name: sysconf_confname
/
Return an integer-valued system configuration variable.
[clinic start generated code]*/
static long
os_sysconf_impl(PyObject *module, int name)
/*[clinic end generated code: output=3662f945fc0cc756 input=279e3430a33f29e4]*/
{
long value;
errno = 0;
value = sysconf(name);
if (value == -1 && errno != 0)
posix_error();
return value;
}
#endif /* HAVE_SYSCONF */
/* This code is used to ensure that the tables of configuration value names
* are in sorted order as required by conv_confname(), and also to build
* the exported dictionaries that are used to publish information about the
* names available on the host platform.
*
* Sorting the table at runtime ensures that the table is properly ordered
* when used, even for platforms we're not able to test on. It also makes
* it easier to add additional entries to the tables.
*/
static int
cmp_constdefs(const void *v1, const void *v2)
{
const struct constdef *c1 =
(const struct constdef *) v1;
const struct constdef *c2 =
(const struct constdef *) v2;
return strcmp(c1->name, c2->name);
}
static int
setup_confname_table(struct constdef *table, size_t tablesize,
const char *tablename, PyObject *module)
{
PyObject *d = NULL;
size_t i;
qsort(table, tablesize, sizeof(struct constdef), cmp_constdefs);
d = PyDict_New();
if (d == NULL)
return -1;
for (i=0; i < tablesize; ++i) {
PyObject *o = PyLong_FromLong(table[i].value);
if (o == NULL || PyDict_SetItemString(d, table[i].name, o) == -1) {
Py_XDECREF(o);
Py_DECREF(d);
return -1;
}
Py_DECREF(o);
}
return PyModule_AddObject(module, tablename, d);
}
/* Return -1 on failure, 0 on success. */
static int
setup_confname_tables(PyObject *module)
{
#if defined(HAVE_FPATHCONF) || defined(HAVE_PATHCONF)
if (setup_confname_table(posix_constants_pathconf,
sizeof(posix_constants_pathconf)
/ sizeof(struct constdef),
"pathconf_names", module))
return -1;
#endif
#ifdef HAVE_CONFSTR
if (setup_confname_table(posix_constants_confstr,
sizeof(posix_constants_confstr)
/ sizeof(struct constdef),
"confstr_names", module))
return -1;
#endif
#ifdef HAVE_SYSCONF
if (setup_confname_table(posix_constants_sysconf,
sizeof(posix_constants_sysconf)
/ sizeof(struct constdef),
"sysconf_names", module))
return -1;
#endif
return 0;
}
/*[clinic input]
os.abort
Abort the interpreter immediately.
This function 'dumps core' or otherwise fails in the hardest way possible
on the hosting operating system. This function never returns.
[clinic start generated code]*/
static PyObject *
os_abort_impl(PyObject *module)
/*[clinic end generated code: output=dcf52586dad2467c input=cf2c7d98bc504047]*/
{
abort();
/*NOTREACHED*/
#ifndef __clang__
/* Issue #28152: abort() is declared with __attribute__((__noreturn__)).
GCC emits a warning without "return NULL;" (compiler bug?), but Clang
is smarter and emits a warning on the return. */
Py_FatalError("abort() called from Python code didn't abort!");
return NULL;
#endif
}
#ifdef MS_WINDOWS
/* Grab ShellExecute dynamically from shell32 */
static int has_ShellExecute = -1;
static HINSTANCE (CALLBACK *Py_ShellExecuteW)(HWND, LPCWSTR, LPCWSTR, LPCWSTR,
LPCWSTR, INT);
static int
check_ShellExecute()
{
HINSTANCE hShell32;
/* only recheck */
if (-1 == has_ShellExecute) {
Py_BEGIN_ALLOW_THREADS
/* Security note: this call is not vulnerable to "DLL hijacking".
SHELL32 is part of "KnownDLLs" and so Windows always load
the system SHELL32.DLL, even if there is another SHELL32.DLL
in the DLL search path. */
hShell32 = LoadLibraryW(L"SHELL32");
if (hShell32) {
*(FARPROC*)&Py_ShellExecuteW = GetProcAddress(hShell32,
"ShellExecuteW");
has_ShellExecute = Py_ShellExecuteW != NULL;
} else {
has_ShellExecute = 0;
}
Py_END_ALLOW_THREADS
}
return has_ShellExecute;
}
/*[clinic input]
os.startfile
filepath: path_t
operation: Py_UNICODE = NULL
arguments: Py_UNICODE = NULL
cwd: path_t(nullable=True) = None
show_cmd: int = 1
Start a file with its associated application.
When "operation" is not specified or "open", this acts like
double-clicking the file in Explorer, or giving the file name as an
argument to the DOS "start" command: the file is opened with whatever
application (if any) its extension is associated.
When another "operation" is given, it specifies what should be done with
the file. A typical operation is "print".
"arguments" is passed to the application, but should be omitted if the
file is a document.
"cwd" is the working directory for the operation. If "filepath" is
relative, it will be resolved against this directory. This argument
should usually be an absolute path.
"show_cmd" can be used to override the recommended visibility option.
See the Windows ShellExecute documentation for values.
startfile returns as soon as the associated application is launched.
There is no option to wait for the application to close, and no way
to retrieve the application's exit status.
The filepath is relative to the current directory. If you want to use
an absolute path, make sure the first character is not a slash ("/");
the underlying Win32 ShellExecute function doesn't work if it is.
[clinic start generated code]*/
static PyObject *
os_startfile_impl(PyObject *module, path_t *filepath,
const Py_UNICODE *operation, const Py_UNICODE *arguments,
path_t *cwd, int show_cmd)
/*[clinic end generated code: output=3baa4f9795841880 input=8248997b80669622]*/
{
HINSTANCE rc;
if(!check_ShellExecute()) {
/* If the OS doesn't have ShellExecute, return a
NotImplementedError. */
return PyErr_Format(PyExc_NotImplementedError,
"startfile not available on this platform");
}
if (PySys_Audit("os.startfile", "Ou", filepath->object, operation) < 0) {
return NULL;
}
if (PySys_Audit("os.startfile/2", "OuuOi", filepath->object, operation,
arguments, cwd->object ? cwd->object : Py_None,
show_cmd) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS
rc = Py_ShellExecuteW((HWND)0, operation, filepath->wide,
arguments, cwd->wide, show_cmd);
Py_END_ALLOW_THREADS
if (rc <= (HINSTANCE)32) {
win32_error_object("startfile", filepath->object);
return NULL;
}
Py_RETURN_NONE;
}
#endif /* MS_WINDOWS */
#ifdef HAVE_GETLOADAVG
/*[clinic input]
os.getloadavg
Return average recent system load information.
Return the number of processes in the system run queue averaged over
the last 1, 5, and 15 minutes as a tuple of three floats.
Raises OSError if the load average was unobtainable.
[clinic start generated code]*/
static PyObject *
os_getloadavg_impl(PyObject *module)
/*[clinic end generated code: output=9ad3a11bfb4f4bd2 input=3d6d826b76d8a34e]*/
{
double loadavg[3];
if (getloadavg(loadavg, 3)!=3) {
PyErr_SetString(PyExc_OSError, "Load averages are unobtainable");
return NULL;
} else
return Py_BuildValue("ddd", loadavg[0], loadavg[1], loadavg[2]);
}
#endif /* HAVE_GETLOADAVG */
/*[clinic input]
os.device_encoding
fd: int
Return a string describing the encoding of a terminal's file descriptor.
The file descriptor must be attached to a terminal.
If the device is not a terminal, return None.
[clinic start generated code]*/
static PyObject *
os_device_encoding_impl(PyObject *module, int fd)
/*[clinic end generated code: output=e0d294bbab7e8c2b input=9e1d4a42b66df312]*/
{
return _Py_device_encoding(fd);
}
#ifdef HAVE_SETRESUID
/*[clinic input]
os.setresuid
ruid: uid_t
euid: uid_t
suid: uid_t
/
Set the current process's real, effective, and saved user ids.
[clinic start generated code]*/
static PyObject *
os_setresuid_impl(PyObject *module, uid_t ruid, uid_t euid, uid_t suid)
/*[clinic end generated code: output=834a641e15373e97 input=9e33cb79a82792f3]*/
{
if (setresuid(ruid, euid, suid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETRESUID */
#ifdef HAVE_SETRESGID
/*[clinic input]
os.setresgid
rgid: gid_t
egid: gid_t
sgid: gid_t
/
Set the current process's real, effective, and saved group ids.
[clinic start generated code]*/
static PyObject *
os_setresgid_impl(PyObject *module, gid_t rgid, gid_t egid, gid_t sgid)
/*[clinic end generated code: output=6aa402f3d2e514a9 input=33e9e0785ef426b1]*/
{
if (setresgid(rgid, egid, sgid) < 0)
return posix_error();
Py_RETURN_NONE;
}
#endif /* HAVE_SETRESGID */
#ifdef HAVE_GETRESUID
/*[clinic input]
os.getresuid
Return a tuple of the current process's real, effective, and saved user ids.
[clinic start generated code]*/
static PyObject *
os_getresuid_impl(PyObject *module)
/*[clinic end generated code: output=8e0becff5dece5bf input=41ccfa8e1f6517ad]*/
{
uid_t ruid, euid, suid;
if (getresuid(&ruid, &euid, &suid) < 0)
return posix_error();
return Py_BuildValue("(NNN)", _PyLong_FromUid(ruid),
_PyLong_FromUid(euid),
_PyLong_FromUid(suid));
}
#endif /* HAVE_GETRESUID */
#ifdef HAVE_GETRESGID
/*[clinic input]
os.getresgid
Return a tuple of the current process's real, effective, and saved group ids.
[clinic start generated code]*/
static PyObject *
os_getresgid_impl(PyObject *module)
/*[clinic end generated code: output=2719c4bfcf27fb9f input=517e68db9ca32df6]*/
{
gid_t rgid, egid, sgid;
if (getresgid(&rgid, &egid, &sgid) < 0)
return posix_error();
return Py_BuildValue("(NNN)", _PyLong_FromGid(rgid),
_PyLong_FromGid(egid),
_PyLong_FromGid(sgid));
}
#endif /* HAVE_GETRESGID */
#ifdef USE_XATTRS
/*[clinic input]
os.getxattr
path: path_t(allow_fd=True)
attribute: path_t
*
follow_symlinks: bool = True
Return the value of extended attribute attribute on path.
path may be either a string, a path-like object, or an open file descriptor.
If follow_symlinks is False, and the last element of the path is a symbolic
link, getxattr will examine the symbolic link itself instead of the file
the link points to.
[clinic start generated code]*/
static PyObject *
os_getxattr_impl(PyObject *module, path_t *path, path_t *attribute,
int follow_symlinks)
/*[clinic end generated code: output=5f2f44200a43cff2 input=025789491708f7eb]*/
{
Py_ssize_t i;
PyObject *buffer = NULL;
if (fd_and_follow_symlinks_invalid("getxattr", path->fd, follow_symlinks))
return NULL;
if (PySys_Audit("os.getxattr", "OO", path->object, attribute->object) < 0) {
return NULL;
}
for (i = 0; ; i++) {
void *ptr;
ssize_t result;
static const Py_ssize_t buffer_sizes[] = {128, XATTR_SIZE_MAX, 0};
Py_ssize_t buffer_size = buffer_sizes[i];
if (!buffer_size) {
path_error(path);
return NULL;
}
buffer = PyBytes_FromStringAndSize(NULL, buffer_size);
if (!buffer)
return NULL;
ptr = PyBytes_AS_STRING(buffer);
Py_BEGIN_ALLOW_THREADS;
if (path->fd >= 0)
result = fgetxattr(path->fd, attribute->narrow, ptr, buffer_size);
else if (follow_symlinks)
result = getxattr(path->narrow, attribute->narrow, ptr, buffer_size);
else
result = lgetxattr(path->narrow, attribute->narrow, ptr, buffer_size);
Py_END_ALLOW_THREADS;
if (result < 0) {
Py_DECREF(buffer);
if (errno == ERANGE)
continue;
path_error(path);
return NULL;
}
if (result != buffer_size) {
/* Can only shrink. */
_PyBytes_Resize(&buffer, result);
}
break;
}
return buffer;
}
/*[clinic input]
os.setxattr
path: path_t(allow_fd=True)
attribute: path_t
value: Py_buffer
flags: int = 0
*
follow_symlinks: bool = True
Set extended attribute attribute on path to value.
path may be either a string, a path-like object, or an open file descriptor.
If follow_symlinks is False, and the last element of the path is a symbolic
link, setxattr will modify the symbolic link itself instead of the file
the link points to.
[clinic start generated code]*/
static PyObject *
os_setxattr_impl(PyObject *module, path_t *path, path_t *attribute,
Py_buffer *value, int flags, int follow_symlinks)
/*[clinic end generated code: output=98b83f63fdde26bb input=c17c0103009042f0]*/
{
ssize_t result;
if (fd_and_follow_symlinks_invalid("setxattr", path->fd, follow_symlinks))
return NULL;
if (PySys_Audit("os.setxattr", "OOy#i", path->object, attribute->object,
value->buf, value->len, flags) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS;
if (path->fd > -1)
result = fsetxattr(path->fd, attribute->narrow,
value->buf, value->len, flags);
else if (follow_symlinks)
result = setxattr(path->narrow, attribute->narrow,
value->buf, value->len, flags);
else
result = lsetxattr(path->narrow, attribute->narrow,
value->buf, value->len, flags);
Py_END_ALLOW_THREADS;
if (result) {
path_error(path);
return NULL;
}
Py_RETURN_NONE;
}
/*[clinic input]
os.removexattr
path: path_t(allow_fd=True)
attribute: path_t
*
follow_symlinks: bool = True
Remove extended attribute attribute on path.
path may be either a string, a path-like object, or an open file descriptor.
If follow_symlinks is False, and the last element of the path is a symbolic
link, removexattr will modify the symbolic link itself instead of the file
the link points to.
[clinic start generated code]*/
static PyObject *
os_removexattr_impl(PyObject *module, path_t *path, path_t *attribute,
int follow_symlinks)
/*[clinic end generated code: output=521a51817980cda6 input=3d9a7d36fe2f7c4e]*/
{
ssize_t result;
if (fd_and_follow_symlinks_invalid("removexattr", path->fd, follow_symlinks))
return NULL;
if (PySys_Audit("os.removexattr", "OO", path->object, attribute->object) < 0) {
return NULL;
}
Py_BEGIN_ALLOW_THREADS;
if (path->fd > -1)
result = fremovexattr(path->fd, attribute->narrow);
else if (follow_symlinks)
result = removexattr(path->narrow, attribute->narrow);
else
result = lremovexattr(path->narrow, attribute->narrow);
Py_END_ALLOW_THREADS;
if (result) {
return path_error(path);
}
Py_RETURN_NONE;
}
/*[clinic input]
os.listxattr
path: path_t(allow_fd=True, nullable=True) = None
*
follow_symlinks: bool = True
Return a list of extended attributes on path.
path may be either None, a string, a path-like object, or an open file descriptor.
if path is None, listxattr will examine the current directory.
If follow_symlinks is False, and the last element of the path is a symbolic
link, listxattr will examine the symbolic link itself instead of the file
the link points to.
[clinic start generated code]*/
static PyObject *
os_listxattr_impl(PyObject *module, path_t *path, int follow_symlinks)
/*[clinic end generated code: output=bebdb4e2ad0ce435 input=9826edf9fdb90869]*/
{
Py_ssize_t i;
PyObject *result = NULL;
const char *name;
char *buffer = NULL;
if (fd_and_follow_symlinks_invalid("listxattr", path->fd, follow_symlinks))
goto exit;
if (PySys_Audit("os.listxattr", "(O)",
path->object ? path->object : Py_None) < 0) {
return NULL;
}
name = path->narrow ? path->narrow : ".";
for (i = 0; ; i++) {
const char *start, *trace, *end;
ssize_t length;
static const Py_ssize_t buffer_sizes[] = { 256, XATTR_LIST_MAX, 0 };
Py_ssize_t buffer_size = buffer_sizes[i];
if (!buffer_size) {
/* ERANGE */
path_error(path);
break;
}
buffer = PyMem_Malloc(buffer_size);
if (!buffer) {
PyErr_NoMemory();
break;
}
Py_BEGIN_ALLOW_THREADS;
if (path->fd > -1)
length = flistxattr(path->fd, buffer, buffer_size);
else if (follow_symlinks)
length = listxattr(name, buffer, buffer_size);
else
length = llistxattr(name, buffer, buffer_size);
Py_END_ALLOW_THREADS;
if (length < 0) {
if (errno == ERANGE) {
PyMem_Free(buffer);
buffer = NULL;
continue;
}
path_error(path);
break;
}
result = PyList_New(0);
if (!result) {
goto exit;
}
end = buffer + length;
for (trace = start = buffer; trace != end; trace++) {
if (!*trace) {
int error;
PyObject *attribute = PyUnicode_DecodeFSDefaultAndSize(start,
trace - start);
if (!attribute) {
Py_DECREF(result);
result = NULL;
goto exit;
}
error = PyList_Append(result, attribute);
Py_DECREF(attribute);
if (error) {
Py_DECREF(result);
result = NULL;
goto exit;
}
start = trace + 1;
}
}
break;
}
exit:
if (buffer)
PyMem_Free(buffer);
return result;
}
#endif /* USE_XATTRS */
/*[clinic input]
os.urandom
size: Py_ssize_t
/
Return a bytes object containing random bytes suitable for cryptographic use.
[clinic start generated code]*/
static PyObject *
os_urandom_impl(PyObject *module, Py_ssize_t size)
/*[clinic end generated code: output=42c5cca9d18068e9 input=4067cdb1b6776c29]*/
{
PyObject *bytes;
int result;
if (size < 0)
return PyErr_Format(PyExc_ValueError,
"negative argument not allowed");
bytes = PyBytes_FromStringAndSize(NULL, size);
if (bytes == NULL)
return NULL;
result = _PyOS_URandom(PyBytes_AS_STRING(bytes), PyBytes_GET_SIZE(bytes));
if (result == -1) {
Py_DECREF(bytes);
return NULL;
}
return bytes;
}
#ifdef HAVE_MEMFD_CREATE
/*[clinic input]
os.memfd_create
name: FSConverter
flags: unsigned_int(bitwise=True, c_default="MFD_CLOEXEC") = MFD_CLOEXEC
[clinic start generated code]*/
static PyObject *
os_memfd_create_impl(PyObject *module, PyObject *name, unsigned int flags)
/*[clinic end generated code: output=6681ede983bdb9a6 input=a42cfc199bcd56e9]*/
{
int fd;
const char *bytes = PyBytes_AS_STRING(name);
Py_BEGIN_ALLOW_THREADS
fd = memfd_create(bytes, flags);
Py_END_ALLOW_THREADS
if (fd == -1) {
return PyErr_SetFromErrno(PyExc_OSError);
}
return PyLong_FromLong(fd);
}
#endif
#if defined(HAVE_EVENTFD) && defined(EFD_CLOEXEC)
/*[clinic input]
os.eventfd
initval: unsigned_int
flags: int(c_default="EFD_CLOEXEC") = EFD_CLOEXEC
Creates and returns an event notification file descriptor.
[clinic start generated code]*/
static PyObject *
os_eventfd_impl(PyObject *module, unsigned int initval, int flags)
/*[clinic end generated code: output=ce9c9bbd1446f2de input=66203e3c50c4028b]*/
{
/* initval is limited to uint32_t, internal counter is uint64_t */
int fd;
Py_BEGIN_ALLOW_THREADS
fd = eventfd(initval, flags);
Py_END_ALLOW_THREADS
if (fd == -1) {
return PyErr_SetFromErrno(PyExc_OSError);
}
return PyLong_FromLong(fd);
}
/*[clinic input]
os.eventfd_read
fd: fildes
Read eventfd value
[clinic start generated code]*/
static PyObject *
os_eventfd_read_impl(PyObject *module, int fd)
/*[clinic end generated code: output=8f2c7b59a3521fd1 input=110f8b57fa596afe]*/
{
eventfd_t value;
int result;
Py_BEGIN_ALLOW_THREADS
result = eventfd_read(fd, &value);
Py_END_ALLOW_THREADS
if (result == -1) {
return PyErr_SetFromErrno(PyExc_OSError);
}
return PyLong_FromUnsignedLongLong(value);
}
/*[clinic input]
os.eventfd_write
fd: fildes
value: unsigned_long_long
Write eventfd value.
[clinic start generated code]*/
static PyObject *
os_eventfd_write_impl(PyObject *module, int fd, unsigned long long value)
/*[clinic end generated code: output=bebd9040bbf987f5 input=156de8555be5a949]*/
{
int result;
Py_BEGIN_ALLOW_THREADS
result = eventfd_write(fd, value);
Py_END_ALLOW_THREADS
if (result == -1) {
return PyErr_SetFromErrno(PyExc_OSError);
}
Py_RETURN_NONE;
}
#endif /* HAVE_EVENTFD && EFD_CLOEXEC */
/* Terminal size querying */
PyDoc_STRVAR(TerminalSize_docstring,
"A tuple of (columns, lines) for holding terminal window size");
static PyStructSequence_Field TerminalSize_fields[] = {
{"columns", "width of the terminal window in characters"},
{"lines", "height of the terminal window in characters"},
{NULL, NULL}
};
static PyStructSequence_Desc TerminalSize_desc = {
"os.terminal_size",
TerminalSize_docstring,
TerminalSize_fields,
2,
};
#if defined(TERMSIZE_USE_CONIO) || defined(TERMSIZE_USE_IOCTL)
/*[clinic input]
os.get_terminal_size
fd: int(c_default="fileno(stdout)", py_default="<unrepresentable>") = -1
/
Return the size of the terminal window as (columns, lines).
The optional argument fd (default standard output) specifies
which file descriptor should be queried.
If the file descriptor is not connected to a terminal, an OSError
is thrown.
This function will only be defined if an implementation is
available for this system.
shutil.get_terminal_size is the high-level function which should
normally be used, os.get_terminal_size is the low-level implementation.
[clinic start generated code]*/
static PyObject *
os_get_terminal_size_impl(PyObject *module, int fd)
/*[clinic end generated code: output=fbab93acef980508 input=ead5679b82ddb920]*/
{
int columns, lines;
PyObject *termsize;
/* Under some conditions stdout may not be connected and
* fileno(stdout) may point to an invalid file descriptor. For example
* GUI apps don't have valid standard streams by default.
*
* If this happens, and the optional fd argument is not present,
* the ioctl below will fail returning EBADF. This is what we want.
*/
#ifdef TERMSIZE_USE_IOCTL
{
struct winsize w;
if (ioctl(fd, TIOCGWINSZ, &w))
return PyErr_SetFromErrno(PyExc_OSError);
columns = w.ws_col;
lines = w.ws_row;
}
#endif /* TERMSIZE_USE_IOCTL */
#ifdef TERMSIZE_USE_CONIO
{
DWORD nhandle;
HANDLE handle;
CONSOLE_SCREEN_BUFFER_INFO csbi;
switch (fd) {
case 0: nhandle = STD_INPUT_HANDLE;
break;
case 1: nhandle = STD_OUTPUT_HANDLE;
break;
case 2: nhandle = STD_ERROR_HANDLE;
break;
default:
return PyErr_Format(PyExc_ValueError, "bad file descriptor");
}
handle = GetStdHandle(nhandle);
if (handle == NULL)
return PyErr_Format(PyExc_OSError, "handle cannot be retrieved");
if (handle == INVALID_HANDLE_VALUE)
return PyErr_SetFromWindowsErr(0);
if (!GetConsoleScreenBufferInfo(handle, &csbi))
return PyErr_SetFromWindowsErr(0);
columns = csbi.srWindow.Right - csbi.srWindow.Left + 1;
lines = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
}
#endif /* TERMSIZE_USE_CONIO */
PyObject *TerminalSizeType = get_posix_state(module)->TerminalSizeType;
termsize = PyStructSequence_New((PyTypeObject *)TerminalSizeType);
if (termsize == NULL)
return NULL;
PyStructSequence_SET_ITEM(termsize, 0, PyLong_FromLong(columns));
PyStructSequence_SET_ITEM(termsize, 1, PyLong_FromLong(lines));
if (PyErr_Occurred()) {
Py_DECREF(termsize);
return NULL;
}
return termsize;
}
#endif /* defined(TERMSIZE_USE_CONIO) || defined(TERMSIZE_USE_IOCTL) */
/*[clinic input]
os.cpu_count
Return the number of CPUs in the system; return None if indeterminable.
This number is not equivalent to the number of CPUs the current process can
use. The number of usable CPUs can be obtained with
``len(os.sched_getaffinity(0))``
[clinic start generated code]*/
static PyObject *
os_cpu_count_impl(PyObject *module)
/*[clinic end generated code: output=5fc29463c3936a9c input=e7c8f4ba6dbbadd3]*/
{
int ncpu = 0;
#ifdef MS_WINDOWS
ncpu = GetActiveProcessorCount(ALL_PROCESSOR_GROUPS);
#elif defined(__hpux)
ncpu = mpctl(MPC_GETNUMSPUS, NULL, NULL);
#elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
ncpu = sysconf(_SC_NPROCESSORS_ONLN);
#elif defined(__VXWORKS__)
ncpu = _Py_popcount32(vxCpuEnabledGet());
#elif defined(__DragonFly__) || \
defined(__OpenBSD__) || \
defined(__FreeBSD__) || \
defined(__NetBSD__) || \
defined(__APPLE__)
int mib[2];
size_t len = sizeof(ncpu);
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
if (sysctl(mib, 2, &ncpu, &len, NULL, 0) != 0)
ncpu = 0;
#endif
if (ncpu >= 1)
return PyLong_FromLong(ncpu);
else
Py_RETURN_NONE;
}
/*[clinic input]
os.get_inheritable -> bool
fd: int
/
Get the close-on-exe flag of the specified file descriptor.
[clinic start generated code]*/
static int
os_get_inheritable_impl(PyObject *module, int fd)
/*[clinic end generated code: output=0445e20e149aa5b8 input=89ac008dc9ab6b95]*/
{
int return_value;
_Py_BEGIN_SUPPRESS_IPH
return_value = _Py_get_inheritable(fd);
_Py_END_SUPPRESS_IPH
return return_value;
}
/*[clinic input]
os.set_inheritable
fd: int
inheritable: int
/
Set the inheritable flag of the specified file descriptor.
[clinic start generated code]*/
static PyObject *
os_set_inheritable_impl(PyObject *module, int fd, int inheritable)
/*[clinic end generated code: output=f1b1918a2f3c38c2 input=9ceaead87a1e2402]*/
{
int result;
_Py_BEGIN_SUPPRESS_IPH
result = _Py_set_inheritable(fd, inheritable, NULL);
_Py_END_SUPPRESS_IPH
if (result < 0)
return NULL;
Py_RETURN_NONE;
}
#ifdef MS_WINDOWS
/*[clinic input]
os.get_handle_inheritable -> bool
handle: intptr_t
/
Get the close-on-exe flag of the specified file descriptor.
[clinic start generated code]*/
static int
os_get_handle_inheritable_impl(PyObject *module, intptr_t handle)
/*[clinic end generated code: output=36be5afca6ea84d8 input=cfe99f9c05c70ad1]*/
{
DWORD flags;
if (!GetHandleInformation((HANDLE)handle, &flags)) {
PyErr_SetFromWindowsErr(0);
return -1;
}
return flags & HANDLE_FLAG_INHERIT;
}
/*[clinic input]
os.set_handle_inheritable
handle: intptr_t
inheritable: bool
/
Set the inheritable flag of the specified handle.
[clinic start generated code]*/
static PyObject *
os_set_handle_inheritable_impl(PyObject *module, intptr_t handle,
int inheritable)
/*[clinic end generated code: output=021d74fe6c96baa3 input=7a7641390d8364fc]*/
{
DWORD flags = inheritable ? HANDLE_FLAG_INHERIT : 0;
if (!SetHandleInformation((HANDLE)handle, HANDLE_FLAG_INHERIT, flags)) {
PyErr_SetFromWindowsErr(0);
return NULL;
}
Py_RETURN_NONE;
}
#endif /* MS_WINDOWS */
#ifndef MS_WINDOWS
/*[clinic input]
os.get_blocking -> bool
fd: int
/
Get the blocking mode of the file descriptor.
Return False if the O_NONBLOCK flag is set, True if the flag is cleared.
[clinic start generated code]*/
static int
os_get_blocking_impl(PyObject *module, int fd)
/*[clinic end generated code: output=336a12ad76a61482 input=f4afb59d51560179]*/
{
int blocking;
_Py_BEGIN_SUPPRESS_IPH
blocking = _Py_get_blocking(fd);
_Py_END_SUPPRESS_IPH
return blocking;
}
/*[clinic input]
os.set_blocking
fd: int
blocking: bool(accept={int})
/
Set the blocking mode of the specified file descriptor.
Set the O_NONBLOCK flag if blocking is False,
clear the O_NONBLOCK flag otherwise.
[clinic start generated code]*/
static PyObject *
os_set_blocking_impl(PyObject *module, int fd, int blocking)
/*[clinic end generated code: output=384eb43aa0762a9d input=bf5c8efdc5860ff3]*/
{
int result;
_Py_BEGIN_SUPPRESS_IPH
result = _Py_set_blocking(fd, blocking);
_Py_END_SUPPRESS_IPH
if (result < 0)
return NULL;
Py_RETURN_NONE;
}
#endif /* !MS_WINDOWS */
/*[clinic input]
class os.DirEntry "DirEntry *" "DirEntryType"
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=3c18c7a448247980]*/
typedef struct {
PyObject_HEAD
PyObject *name;
PyObject *path;
PyObject *stat;
PyObject *lstat;
#ifdef MS_WINDOWS
struct _Py_stat_struct win32_lstat;
uint64_t win32_file_index;
int got_file_index;
#else /* POSIX */
#ifdef HAVE_DIRENT_D_TYPE
unsigned char d_type;
#endif
ino_t d_ino;
int dir_fd;
#endif
} DirEntry;
static void
DirEntry_dealloc(DirEntry *entry)
{
PyTypeObject *tp = Py_TYPE(entry);
Py_XDECREF(entry->name);
Py_XDECREF(entry->path);
Py_XDECREF(entry->stat);
Py_XDECREF(entry->lstat);
freefunc free_func = PyType_GetSlot(tp, Py_tp_free);
free_func(entry);
Py_DECREF(tp);
}
/* Forward reference */
static int
DirEntry_test_mode(PyTypeObject *defining_class, DirEntry *self,
int follow_symlinks, unsigned short mode_bits);
/*[clinic input]
os.DirEntry.is_symlink -> bool
defining_class: defining_class
/
Return True if the entry is a symbolic link; cached per entry.
[clinic start generated code]*/
static int
os_DirEntry_is_symlink_impl(DirEntry *self, PyTypeObject *defining_class)
/*[clinic end generated code: output=293096d589b6d47c input=e9acc5ee4d511113]*/
{
#ifdef MS_WINDOWS
return (self->win32_lstat.st_mode & S_IFMT) == S_IFLNK;
#elif defined(HAVE_DIRENT_D_TYPE)
/* POSIX */
if (self->d_type != DT_UNKNOWN)
return self->d_type == DT_LNK;
else
return DirEntry_test_mode(defining_class, self, 0, S_IFLNK);
#else
/* POSIX without d_type */
return DirEntry_test_mode(defining_class, self, 0, S_IFLNK);
#endif
}
static PyObject *
DirEntry_fetch_stat(PyObject *module, DirEntry *self, int follow_symlinks)
{
int result;
STRUCT_STAT st;
PyObject *ub;
#ifdef MS_WINDOWS
if (!PyUnicode_FSDecoder(self->path, &ub))
return NULL;
#if USE_UNICODE_WCHAR_CACHE
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
const wchar_t *path = PyUnicode_AsUnicode(ub);
_Py_COMP_DIAG_POP
#else /* USE_UNICODE_WCHAR_CACHE */
wchar_t *path = PyUnicode_AsWideCharString(ub, NULL);
Py_DECREF(ub);
#endif /* USE_UNICODE_WCHAR_CACHE */
#else /* POSIX */
if (!PyUnicode_FSConverter(self->path, &ub))
return NULL;
const char *path = PyBytes_AS_STRING(ub);
if (self->dir_fd != DEFAULT_DIR_FD) {
#ifdef HAVE_FSTATAT
if (HAVE_FSTATAT_RUNTIME) {
Py_BEGIN_ALLOW_THREADS
result = fstatat(self->dir_fd, path, &st,
follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW);
Py_END_ALLOW_THREADS
} else
#endif /* HAVE_FSTATAT */
{
Py_DECREF(ub);
PyErr_SetString(PyExc_NotImplementedError, "can't fetch stat");
return NULL;
}
}
else
#endif
{
Py_BEGIN_ALLOW_THREADS
if (follow_symlinks) {
result = STAT(path, &st);
}
else {
result = LSTAT(path, &st);
}
Py_END_ALLOW_THREADS
}
#if defined(MS_WINDOWS) && !USE_UNICODE_WCHAR_CACHE
PyMem_Free(path);
#else /* USE_UNICODE_WCHAR_CACHE */
Py_DECREF(ub);
#endif /* USE_UNICODE_WCHAR_CACHE */
if (result != 0)
return path_object_error(self->path);
return _pystat_fromstructstat(module, &st);
}
static PyObject *
DirEntry_get_lstat(PyTypeObject *defining_class, DirEntry *self)
{
if (!self->lstat) {
PyObject *module = PyType_GetModule(defining_class);
#ifdef MS_WINDOWS
self->lstat = _pystat_fromstructstat(module, &self->win32_lstat);
#else /* POSIX */
self->lstat = DirEntry_fetch_stat(module, self, 0);
#endif
}
Py_XINCREF(self->lstat);
return self->lstat;
}
/*[clinic input]
os.DirEntry.stat
defining_class: defining_class
/
*
follow_symlinks: bool = True
Return stat_result object for the entry; cached per entry.
[clinic start generated code]*/
static PyObject *
os_DirEntry_stat_impl(DirEntry *self, PyTypeObject *defining_class,
int follow_symlinks)
/*[clinic end generated code: output=23f803e19c3e780e input=e816273c4e67ee98]*/
{
if (!follow_symlinks) {
return DirEntry_get_lstat(defining_class, self);
}
if (!self->stat) {
int result = os_DirEntry_is_symlink_impl(self, defining_class);
if (result == -1) {
return NULL;
}
if (result) {
PyObject *module = PyType_GetModule(defining_class);
self->stat = DirEntry_fetch_stat(module, self, 1);
}
else {
self->stat = DirEntry_get_lstat(defining_class, self);
}
}
Py_XINCREF(self->stat);
return self->stat;
}
/* Set exception and return -1 on error, 0 for False, 1 for True */
static int
DirEntry_test_mode(PyTypeObject *defining_class, DirEntry *self,
int follow_symlinks, unsigned short mode_bits)
{
PyObject *stat = NULL;
PyObject *st_mode = NULL;
long mode;
int result;
#if defined(MS_WINDOWS) || defined(HAVE_DIRENT_D_TYPE)
int is_symlink;
int need_stat;
#endif
#ifdef MS_WINDOWS
unsigned long dir_bits;
#endif
#ifdef MS_WINDOWS
is_symlink = (self->win32_lstat.st_mode & S_IFMT) == S_IFLNK;
need_stat = follow_symlinks && is_symlink;
#elif defined(HAVE_DIRENT_D_TYPE)
is_symlink = self->d_type == DT_LNK;
need_stat = self->d_type == DT_UNKNOWN || (follow_symlinks && is_symlink);
#endif
#if defined(MS_WINDOWS) || defined(HAVE_DIRENT_D_TYPE)
if (need_stat) {
#endif
stat = os_DirEntry_stat_impl(self, defining_class, follow_symlinks);
if (!stat) {
if (PyErr_ExceptionMatches(PyExc_FileNotFoundError)) {
/* If file doesn't exist (anymore), then return False
(i.e., say it's not a file/directory) */
PyErr_Clear();
return 0;
}
goto error;
}
_posixstate* state = get_posix_state(PyType_GetModule(defining_class));
st_mode = PyObject_GetAttr(stat, state->st_mode);
if (!st_mode)
goto error;
mode = PyLong_AsLong(st_mode);
if (mode == -1 && PyErr_Occurred())
goto error;
Py_CLEAR(st_mode);
Py_CLEAR(stat);
result = (mode & S_IFMT) == mode_bits;
#if defined(MS_WINDOWS) || defined(HAVE_DIRENT_D_TYPE)
}
else if (is_symlink) {
assert(mode_bits != S_IFLNK);
result = 0;
}
else {
assert(mode_bits == S_IFDIR || mode_bits == S_IFREG);
#ifdef MS_WINDOWS
dir_bits = self->win32_lstat.st_file_attributes & FILE_ATTRIBUTE_DIRECTORY;
if (mode_bits == S_IFDIR)
result = dir_bits != 0;
else
result = dir_bits == 0;
#else /* POSIX */
if (mode_bits == S_IFDIR)
result = self->d_type == DT_DIR;
else
result = self->d_type == DT_REG;
#endif
}
#endif
return result;
error:
Py_XDECREF(st_mode);
Py_XDECREF(stat);
return -1;
}
/*[clinic input]
os.DirEntry.is_dir -> bool
defining_class: defining_class
/
*
follow_symlinks: bool = True
Return True if the entry is a directory; cached per entry.
[clinic start generated code]*/
static int
os_DirEntry_is_dir_impl(DirEntry *self, PyTypeObject *defining_class,
int follow_symlinks)
/*[clinic end generated code: output=0cd453b9c0987fdf input=1a4ffd6dec9920cb]*/
{
return DirEntry_test_mode(defining_class, self, follow_symlinks, S_IFDIR);
}
/*[clinic input]
os.DirEntry.is_file -> bool
defining_class: defining_class
/
*
follow_symlinks: bool = True
Return True if the entry is a file; cached per entry.
[clinic start generated code]*/
static int
os_DirEntry_is_file_impl(DirEntry *self, PyTypeObject *defining_class,
int follow_symlinks)
/*[clinic end generated code: output=f7c277ab5ba80908 input=0a64c5a12e802e3b]*/
{
return DirEntry_test_mode(defining_class, self, follow_symlinks, S_IFREG);
}
/*[clinic input]
os.DirEntry.inode
Return inode of the entry; cached per entry.
[clinic start generated code]*/
static PyObject *
os_DirEntry_inode_impl(DirEntry *self)
/*[clinic end generated code: output=156bb3a72162440e input=3ee7b872ae8649f0]*/
{
#ifdef MS_WINDOWS
if (!self->got_file_index) {
PyObject *unicode;
STRUCT_STAT stat;
int result;
if (!PyUnicode_FSDecoder(self->path, &unicode))
return NULL;
#if USE_UNICODE_WCHAR_CACHE
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
const wchar_t *path = PyUnicode_AsUnicode(unicode);
result = LSTAT(path, &stat);
Py_DECREF(unicode);
_Py_COMP_DIAG_POP
#else /* USE_UNICODE_WCHAR_CACHE */
wchar_t *path = PyUnicode_AsWideCharString(unicode, NULL);
Py_DECREF(unicode);
result = LSTAT(path, &stat);
PyMem_Free(path);
#endif /* USE_UNICODE_WCHAR_CACHE */
if (result != 0)
return path_object_error(self->path);
self->win32_file_index = stat.st_ino;
self->got_file_index = 1;
}
static_assert(sizeof(unsigned long long) >= sizeof(self->win32_file_index),
"DirEntry.win32_file_index is larger than unsigned long long");
return PyLong_FromUnsignedLongLong(self->win32_file_index);
#else /* POSIX */
static_assert(sizeof(unsigned long long) >= sizeof(self->d_ino),
"DirEntry.d_ino is larger than unsigned long long");
return PyLong_FromUnsignedLongLong(self->d_ino);
#endif
}
static PyObject *
DirEntry_repr(DirEntry *self)
{
return PyUnicode_FromFormat("<DirEntry %R>", self->name);
}
/*[clinic input]
os.DirEntry.__fspath__
Returns the path for the entry.
[clinic start generated code]*/
static PyObject *
os_DirEntry___fspath___impl(DirEntry *self)
/*[clinic end generated code: output=6dd7f7ef752e6f4f input=3c49d0cf38df4fac]*/
{
Py_INCREF(self->path);
return self->path;
}
static PyMemberDef DirEntry_members[] = {
{"name", T_OBJECT_EX, offsetof(DirEntry, name), READONLY,
"the entry's base filename, relative to scandir() \"path\" argument"},
{"path", T_OBJECT_EX, offsetof(DirEntry, path), READONLY,
"the entry's full path name; equivalent to os.path.join(scandir_path, entry.name)"},
{NULL}
};
#include "clinic/posixmodule.c.h"
static PyMethodDef DirEntry_methods[] = {
OS_DIRENTRY_IS_DIR_METHODDEF
OS_DIRENTRY_IS_FILE_METHODDEF
OS_DIRENTRY_IS_SYMLINK_METHODDEF
OS_DIRENTRY_STAT_METHODDEF
OS_DIRENTRY_INODE_METHODDEF
OS_DIRENTRY___FSPATH___METHODDEF
{"__class_getitem__", Py_GenericAlias,
METH_O|METH_CLASS, PyDoc_STR("See PEP 585")},
{NULL}
};
static PyType_Slot DirEntryType_slots[] = {
{Py_tp_dealloc, DirEntry_dealloc},
{Py_tp_repr, DirEntry_repr},
{Py_tp_methods, DirEntry_methods},
{Py_tp_members, DirEntry_members},
{0, 0},
};
static PyType_Spec DirEntryType_spec = {
MODNAME ".DirEntry",
sizeof(DirEntry),
0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
DirEntryType_slots
};
#ifdef MS_WINDOWS
static wchar_t *
join_path_filenameW(const wchar_t *path_wide, const wchar_t *filename)
{
Py_ssize_t path_len;
Py_ssize_t size;
wchar_t *result;
wchar_t ch;
if (!path_wide) { /* Default arg: "." */
path_wide = L".";
path_len = 1;
}
else {
path_len = wcslen(path_wide);
}
/* The +1's are for the path separator and the NUL */
size = path_len + 1 + wcslen(filename) + 1;
result = PyMem_New(wchar_t, size);
if (!result) {
PyErr_NoMemory();
return NULL;
}
wcscpy(result, path_wide);
if (path_len > 0) {
ch = result[path_len - 1];
if (ch != SEP && ch != ALTSEP && ch != L':')
result[path_len++] = SEP;
wcscpy(result + path_len, filename);
}
return result;
}
static PyObject *
DirEntry_from_find_data(PyObject *module, path_t *path, WIN32_FIND_DATAW *dataW)
{
DirEntry *entry;
BY_HANDLE_FILE_INFORMATION file_info;
ULONG reparse_tag;
wchar_t *joined_path;
PyObject *DirEntryType = get_posix_state(module)->DirEntryType;
entry = PyObject_New(DirEntry, (PyTypeObject *)DirEntryType);
if (!entry)
return NULL;
entry->name = NULL;
entry->path = NULL;
entry->stat = NULL;
entry->lstat = NULL;
entry->got_file_index = 0;
entry->name = PyUnicode_FromWideChar(dataW->cFileName, -1);
if (!entry->name)
goto error;
if (path->narrow) {
Py_SETREF(entry->name, PyUnicode_EncodeFSDefault(entry->name));
if (!entry->name)
goto error;
}
joined_path = join_path_filenameW(path->wide, dataW->cFileName);
if (!joined_path)
goto error;
entry->path = PyUnicode_FromWideChar(joined_path, -1);
PyMem_Free(joined_path);
if (!entry->path)
goto error;
if (path->narrow) {
Py_SETREF(entry->path, PyUnicode_EncodeFSDefault(entry->path));
if (!entry->path)
goto error;
}
find_data_to_file_info(dataW, &file_info, &reparse_tag);
_Py_attribute_data_to_stat(&file_info, reparse_tag, &entry->win32_lstat);
return (PyObject *)entry;
error:
Py_DECREF(entry);
return NULL;
}
#else /* POSIX */
static char *
join_path_filename(const char *path_narrow, const char* filename, Py_ssize_t filename_len)
{
Py_ssize_t path_len;
Py_ssize_t size;
char *result;
if (!path_narrow) { /* Default arg: "." */
path_narrow = ".";
path_len = 1;
}
else {
path_len = strlen(path_narrow);
}
if (filename_len == -1)
filename_len = strlen(filename);
/* The +1's are for the path separator and the NUL */
size = path_len + 1 + filename_len + 1;
result = PyMem_New(char, size);
if (!result) {
PyErr_NoMemory();
return NULL;
}
strcpy(result, path_narrow);
if (path_len > 0 && result[path_len - 1] != '/')
result[path_len++] = '/';
strcpy(result + path_len, filename);
return result;
}
static PyObject *
DirEntry_from_posix_info(PyObject *module, path_t *path, const char *name,
Py_ssize_t name_len, ino_t d_ino
#ifdef HAVE_DIRENT_D_TYPE
, unsigned char d_type
#endif
)
{
DirEntry *entry;
char *joined_path;
PyObject *DirEntryType = get_posix_state(module)->DirEntryType;
entry = PyObject_New(DirEntry, (PyTypeObject *)DirEntryType);
if (!entry)
return NULL;
entry->name = NULL;
entry->path = NULL;
entry->stat = NULL;
entry->lstat = NULL;
if (path->fd != -1) {
entry->dir_fd = path->fd;
joined_path = NULL;
}
else {
entry->dir_fd = DEFAULT_DIR_FD;
joined_path = join_path_filename(path->narrow, name, name_len);
if (!joined_path)
goto error;
}
if (!path->narrow || !PyObject_CheckBuffer(path->object)) {
entry->name = PyUnicode_DecodeFSDefaultAndSize(name, name_len);
if (joined_path)
entry->path = PyUnicode_DecodeFSDefault(joined_path);
}
else {
entry->name = PyBytes_FromStringAndSize(name, name_len);
if (joined_path)
entry->path = PyBytes_FromString(joined_path);
}
PyMem_Free(joined_path);
if (!entry->name)
goto error;
if (path->fd != -1) {
entry->path = entry->name;
Py_INCREF(entry->path);
}
else if (!entry->path)
goto error;
#ifdef HAVE_DIRENT_D_TYPE
entry->d_type = d_type;
#endif
entry->d_ino = d_ino;
return (PyObject *)entry;
error:
Py_XDECREF(entry);
return NULL;
}
#endif
typedef struct {
PyObject_HEAD
path_t path;
#ifdef MS_WINDOWS
HANDLE handle;
WIN32_FIND_DATAW file_data;
int first_time;
#else /* POSIX */
DIR *dirp;
#endif
#ifdef HAVE_FDOPENDIR
int fd;
#endif
} ScandirIterator;
#ifdef MS_WINDOWS
static int
ScandirIterator_is_closed(ScandirIterator *iterator)
{
return iterator->handle == INVALID_HANDLE_VALUE;
}
static void
ScandirIterator_closedir(ScandirIterator *iterator)
{
HANDLE handle = iterator->handle;
if (handle == INVALID_HANDLE_VALUE)
return;
iterator->handle = INVALID_HANDLE_VALUE;
Py_BEGIN_ALLOW_THREADS
FindClose(handle);
Py_END_ALLOW_THREADS
}
static PyObject *
ScandirIterator_iternext(ScandirIterator *iterator)
{
WIN32_FIND_DATAW *file_data = &iterator->file_data;
BOOL success;
PyObject *entry;
/* Happens if the iterator is iterated twice, or closed explicitly */
if (iterator->handle == INVALID_HANDLE_VALUE)
return NULL;
while (1) {
if (!iterator->first_time) {
Py_BEGIN_ALLOW_THREADS
success = FindNextFileW(iterator->handle, file_data);
Py_END_ALLOW_THREADS
if (!success) {
/* Error or no more files */
if (GetLastError() != ERROR_NO_MORE_FILES)
path_error(&iterator->path);
break;
}
}
iterator->first_time = 0;
/* Skip over . and .. */
if (wcscmp(file_data->cFileName, L".") != 0 &&
wcscmp(file_data->cFileName, L"..") != 0)
{
PyObject *module = PyType_GetModule(Py_TYPE(iterator));
entry = DirEntry_from_find_data(module, &iterator->path, file_data);
if (!entry)
break;
return entry;
}
/* Loop till we get a non-dot directory or finish iterating */
}
/* Error or no more files */
ScandirIterator_closedir(iterator);
return NULL;
}
#else /* POSIX */
static int
ScandirIterator_is_closed(ScandirIterator *iterator)
{
return !iterator->dirp;
}
static void
ScandirIterator_closedir(ScandirIterator *iterator)
{
DIR *dirp = iterator->dirp;
if (!dirp)
return;
iterator->dirp = NULL;
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_FDOPENDIR
if (iterator->path.fd != -1)
rewinddir(dirp);
#endif
closedir(dirp);
Py_END_ALLOW_THREADS
return;
}
static PyObject *
ScandirIterator_iternext(ScandirIterator *iterator)
{
struct dirent *direntp;
Py_ssize_t name_len;
int is_dot;
PyObject *entry;
/* Happens if the iterator is iterated twice, or closed explicitly */
if (!iterator->dirp)
return NULL;
while (1) {
errno = 0;
Py_BEGIN_ALLOW_THREADS
direntp = readdir(iterator->dirp);
Py_END_ALLOW_THREADS
if (!direntp) {
/* Error or no more files */
if (errno != 0)
path_error(&iterator->path);
break;
}
/* Skip over . and .. */
name_len = NAMLEN(direntp);
is_dot = direntp->d_name[0] == '.' &&
(name_len == 1 || (direntp->d_name[1] == '.' && name_len == 2));
if (!is_dot) {
PyObject *module = PyType_GetModule(Py_TYPE(iterator));
entry = DirEntry_from_posix_info(module,
&iterator->path, direntp->d_name,
name_len, direntp->d_ino
#ifdef HAVE_DIRENT_D_TYPE
, direntp->d_type
#endif
);
if (!entry)
break;
return entry;
}
/* Loop till we get a non-dot directory or finish iterating */
}
/* Error or no more files */
ScandirIterator_closedir(iterator);
return NULL;
}
#endif
static PyObject *
ScandirIterator_close(ScandirIterator *self, PyObject *args)
{
ScandirIterator_closedir(self);
Py_RETURN_NONE;
}
static PyObject *
ScandirIterator_enter(PyObject *self, PyObject *args)
{
Py_INCREF(self);
return self;
}
static PyObject *
ScandirIterator_exit(ScandirIterator *self, PyObject *args)
{
ScandirIterator_closedir(self);
Py_RETURN_NONE;
}
static void
ScandirIterator_finalize(ScandirIterator *iterator)
{
PyObject *error_type, *error_value, *error_traceback;
/* Save the current exception, if any. */
PyErr_Fetch(&error_type, &error_value, &error_traceback);
if (!ScandirIterator_is_closed(iterator)) {
ScandirIterator_closedir(iterator);
if (PyErr_ResourceWarning((PyObject *)iterator, 1,
"unclosed scandir iterator %R", iterator)) {
/* Spurious errors can appear at shutdown */
if (PyErr_ExceptionMatches(PyExc_Warning)) {
PyErr_WriteUnraisable((PyObject *) iterator);
}
}
}
path_cleanup(&iterator->path);
/* Restore the saved exception. */
PyErr_Restore(error_type, error_value, error_traceback);
}
static void
ScandirIterator_dealloc(ScandirIterator *iterator)
{
PyTypeObject *tp = Py_TYPE(iterator);
if (PyObject_CallFinalizerFromDealloc((PyObject *)iterator) < 0)
return;
freefunc free_func = PyType_GetSlot(tp, Py_tp_free);
free_func(iterator);
Py_DECREF(tp);
}
static PyMethodDef ScandirIterator_methods[] = {
{"__enter__", (PyCFunction)ScandirIterator_enter, METH_NOARGS},
{"__exit__", (PyCFunction)ScandirIterator_exit, METH_VARARGS},
{"close", (PyCFunction)ScandirIterator_close, METH_NOARGS},
{NULL}
};
static PyType_Slot ScandirIteratorType_slots[] = {
{Py_tp_dealloc, ScandirIterator_dealloc},
{Py_tp_finalize, ScandirIterator_finalize},
{Py_tp_iter, PyObject_SelfIter},
{Py_tp_iternext, ScandirIterator_iternext},
{Py_tp_methods, ScandirIterator_methods},
{0, 0},
};
static PyType_Spec ScandirIteratorType_spec = {
MODNAME ".ScandirIterator",
sizeof(ScandirIterator),
0,
// bpo-40549: Py_TPFLAGS_BASETYPE should not be used, since
// PyType_GetModule(Py_TYPE(self)) doesn't work on a subclass instance.
(Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_FINALIZE
| Py_TPFLAGS_DISALLOW_INSTANTIATION),
ScandirIteratorType_slots
};
/*[clinic input]
os.scandir
path : path_t(nullable=True, allow_fd='PATH_HAVE_FDOPENDIR') = None
Return an iterator of DirEntry objects for given path.
path can be specified as either str, bytes, or a path-like object. If path
is bytes, the names of yielded DirEntry objects will also be bytes; in
all other circumstances they will be str.
If path is None, uses the path='.'.
[clinic start generated code]*/
static PyObject *
os_scandir_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=6eb2668b675ca89e input=6bdd312708fc3bb0]*/
{
ScandirIterator *iterator;
#ifdef MS_WINDOWS
wchar_t *path_strW;
#else
const char *path_str;
#ifdef HAVE_FDOPENDIR
int fd = -1;
#endif
#endif
if (PySys_Audit("os.scandir", "O",
path->object ? path->object : Py_None) < 0) {
return NULL;
}
PyObject *ScandirIteratorType = get_posix_state(module)->ScandirIteratorType;
iterator = PyObject_New(ScandirIterator, (PyTypeObject *)ScandirIteratorType);
if (!iterator)
return NULL;
#ifdef MS_WINDOWS
iterator->handle = INVALID_HANDLE_VALUE;
#else
iterator->dirp = NULL;
#endif
/* Move the ownership to iterator->path */
memcpy(&iterator->path, path, sizeof(path_t));
memset(path, 0, sizeof(path_t));
#ifdef MS_WINDOWS
iterator->first_time = 1;
path_strW = join_path_filenameW(iterator->path.wide, L"*.*");
if (!path_strW)
goto error;
Py_BEGIN_ALLOW_THREADS
iterator->handle = FindFirstFileW(path_strW, &iterator->file_data);
Py_END_ALLOW_THREADS
PyMem_Free(path_strW);
if (iterator->handle == INVALID_HANDLE_VALUE) {
path_error(&iterator->path);
goto error;
}
#else /* POSIX */
errno = 0;
#ifdef HAVE_FDOPENDIR
if (iterator->path.fd != -1) {
if (HAVE_FDOPENDIR_RUNTIME) {
/* closedir() closes the FD, so we duplicate it */
fd = _Py_dup(iterator->path.fd);
if (fd == -1)
goto error;
Py_BEGIN_ALLOW_THREADS
iterator->dirp = fdopendir(fd);
Py_END_ALLOW_THREADS
} else {
PyErr_SetString(PyExc_TypeError,
"scandir: path should be string, bytes, os.PathLike or None, not int");
return NULL;
}
}
else
#endif
{
if (iterator->path.narrow)
path_str = iterator->path.narrow;
else
path_str = ".";
Py_BEGIN_ALLOW_THREADS
iterator->dirp = opendir(path_str);
Py_END_ALLOW_THREADS
}
if (!iterator->dirp) {
path_error(&iterator->path);
#ifdef HAVE_FDOPENDIR
if (fd != -1) {
Py_BEGIN_ALLOW_THREADS
close(fd);
Py_END_ALLOW_THREADS
}
#endif
goto error;
}
#endif
return (PyObject *)iterator;
error:
Py_DECREF(iterator);
return NULL;
}
/*
Return the file system path representation of the object.
If the object is str or bytes, then allow it to pass through with
an incremented refcount. If the object defines __fspath__(), then
return the result of that method. All other types raise a TypeError.
*/
PyObject *
PyOS_FSPath(PyObject *path)
{
/* For error message reasons, this function is manually inlined in
path_converter(). */
PyObject *func = NULL;
PyObject *path_repr = NULL;
if (PyUnicode_Check(path) || PyBytes_Check(path)) {
Py_INCREF(path);
return path;
}
func = _PyObject_LookupSpecial(path, &_Py_ID(__fspath__));
if (NULL == func) {
return PyErr_Format(PyExc_TypeError,
"expected str, bytes or os.PathLike object, "
"not %.200s",
_PyType_Name(Py_TYPE(path)));
}
path_repr = _PyObject_CallNoArgs(func);
Py_DECREF(func);
if (NULL == path_repr) {
return NULL;
}
if (!(PyUnicode_Check(path_repr) || PyBytes_Check(path_repr))) {
PyErr_Format(PyExc_TypeError,
"expected %.200s.__fspath__() to return str or bytes, "
"not %.200s", _PyType_Name(Py_TYPE(path)),
_PyType_Name(Py_TYPE(path_repr)));
Py_DECREF(path_repr);
return NULL;
}
return path_repr;
}
/*[clinic input]
os.fspath
path: object
Return the file system path representation of the object.
If the object is str or bytes, then allow it to pass through as-is. If the
object defines __fspath__(), then return the result of that method. All other
types raise a TypeError.
[clinic start generated code]*/
static PyObject *
os_fspath_impl(PyObject *module, PyObject *path)
/*[clinic end generated code: output=c3c3b78ecff2914f input=e357165f7b22490f]*/
{
return PyOS_FSPath(path);
}
#ifdef HAVE_GETRANDOM_SYSCALL
/*[clinic input]
os.getrandom
size: Py_ssize_t
flags: int=0
Obtain a series of random bytes.
[clinic start generated code]*/
static PyObject *
os_getrandom_impl(PyObject *module, Py_ssize_t size, int flags)
/*[clinic end generated code: output=b3a618196a61409c input=59bafac39c594947]*/
{
PyObject *bytes;
Py_ssize_t n;
if (size < 0) {
errno = EINVAL;
return posix_error();
}
bytes = PyBytes_FromStringAndSize(NULL, size);
if (bytes == NULL) {
PyErr_NoMemory();
return NULL;
}
while (1) {
n = syscall(SYS_getrandom,
PyBytes_AS_STRING(bytes),
PyBytes_GET_SIZE(bytes),
flags);
if (n < 0 && errno == EINTR) {
if (PyErr_CheckSignals() < 0) {
goto error;
}
/* getrandom() was interrupted by a signal: retry */
continue;
}
break;
}
if (n < 0) {
PyErr_SetFromErrno(PyExc_OSError);
goto error;
}
if (n != size) {
_PyBytes_Resize(&bytes, n);
}
return bytes;
error:
Py_DECREF(bytes);
return NULL;
}
#endif /* HAVE_GETRANDOM_SYSCALL */
#ifdef MS_WINDOWS
/* bpo-36085: Helper functions for managing DLL search directories
* on win32
*/
typedef DLL_DIRECTORY_COOKIE (WINAPI *PAddDllDirectory)(PCWSTR newDirectory);
typedef BOOL (WINAPI *PRemoveDllDirectory)(DLL_DIRECTORY_COOKIE cookie);
/*[clinic input]
os._add_dll_directory
path: path_t
Add a path to the DLL search path.
This search path is used when resolving dependencies for imported
extension modules (the module itself is resolved through sys.path),
and also by ctypes.
Returns an opaque value that may be passed to os.remove_dll_directory
to remove this directory from the search path.
[clinic start generated code]*/
static PyObject *
os__add_dll_directory_impl(PyObject *module, path_t *path)
/*[clinic end generated code: output=80b025daebb5d683 input=1de3e6c13a5808c8]*/
{
HMODULE hKernel32;
PAddDllDirectory AddDllDirectory;
DLL_DIRECTORY_COOKIE cookie = 0;
DWORD err = 0;
if (PySys_Audit("os.add_dll_directory", "(O)", path->object) < 0) {
return NULL;
}
/* For Windows 7, we have to load this. As this will be a fairly
infrequent operation, just do it each time. Kernel32 is always
loaded. */
Py_BEGIN_ALLOW_THREADS
if (!(hKernel32 = GetModuleHandleW(L"kernel32")) ||
!(AddDllDirectory = (PAddDllDirectory)GetProcAddress(
hKernel32, "AddDllDirectory")) ||
!(cookie = (*AddDllDirectory)(path->wide))) {
err = GetLastError();
}
Py_END_ALLOW_THREADS
if (err) {
return win32_error_object_err("add_dll_directory",
path->object, err);
}
return PyCapsule_New(cookie, "DLL directory cookie", NULL);
}
/*[clinic input]
os._remove_dll_directory
cookie: object
Removes a path from the DLL search path.
The parameter is an opaque value that was returned from
os.add_dll_directory. You can only remove directories that you added
yourself.
[clinic start generated code]*/
static PyObject *
os__remove_dll_directory_impl(PyObject *module, PyObject *cookie)
/*[clinic end generated code: output=594350433ae535bc input=c1d16a7e7d9dc5dc]*/
{
HMODULE hKernel32;
PRemoveDllDirectory RemoveDllDirectory;
DLL_DIRECTORY_COOKIE cookieValue;
DWORD err = 0;
if (!PyCapsule_IsValid(cookie, "DLL directory cookie")) {
PyErr_SetString(PyExc_TypeError,
"Provided cookie was not returned from os.add_dll_directory");
return NULL;
}
cookieValue = (DLL_DIRECTORY_COOKIE)PyCapsule_GetPointer(
cookie, "DLL directory cookie");
/* For Windows 7, we have to load this. As this will be a fairly
infrequent operation, just do it each time. Kernel32 is always
loaded. */
Py_BEGIN_ALLOW_THREADS
if (!(hKernel32 = GetModuleHandleW(L"kernel32")) ||
!(RemoveDllDirectory = (PRemoveDllDirectory)GetProcAddress(
hKernel32, "RemoveDllDirectory")) ||
!(*RemoveDllDirectory)(cookieValue)) {
err = GetLastError();
}
Py_END_ALLOW_THREADS
if (err) {
return win32_error_object_err("remove_dll_directory",
NULL, err);
}
if (PyCapsule_SetName(cookie, NULL)) {
return NULL;
}
Py_RETURN_NONE;
}
#endif
/* Only check if WIFEXITED is available: expect that it comes
with WEXITSTATUS, WIFSIGNALED, etc.
os.waitstatus_to_exitcode() is implemented in C and not in Python, so
subprocess can safely call it during late Python finalization without
risking that used os attributes were set to None by finalize_modules(). */
#if defined(WIFEXITED) || defined(MS_WINDOWS)
/*[clinic input]
os.waitstatus_to_exitcode
status as status_obj: object
Convert a wait status to an exit code.
On Unix:
* If WIFEXITED(status) is true, return WEXITSTATUS(status).
* If WIFSIGNALED(status) is true, return -WTERMSIG(status).
* Otherwise, raise a ValueError.
On Windows, return status shifted right by 8 bits.
On Unix, if the process is being traced or if waitpid() was called with
WUNTRACED option, the caller must first check if WIFSTOPPED(status) is true.
This function must not be called if WIFSTOPPED(status) is true.
[clinic start generated code]*/
static PyObject *
os_waitstatus_to_exitcode_impl(PyObject *module, PyObject *status_obj)
/*[clinic end generated code: output=db50b1b0ba3c7153 input=7fe2d7fdaea3db42]*/
{
#ifndef MS_WINDOWS
int status = _PyLong_AsInt(status_obj);
if (status == -1 && PyErr_Occurred()) {
return NULL;
}
WAIT_TYPE wait_status;
WAIT_STATUS_INT(wait_status) = status;
int exitcode;
if (WIFEXITED(wait_status)) {
exitcode = WEXITSTATUS(wait_status);
/* Sanity check to provide warranty on the function behavior.
It should not occur in practice */
if (exitcode < 0) {
PyErr_Format(PyExc_ValueError, "invalid WEXITSTATUS: %i", exitcode);
return NULL;
}
}
else if (WIFSIGNALED(wait_status)) {
int signum = WTERMSIG(wait_status);
/* Sanity check to provide warranty on the function behavior.
It should not occurs in practice */
if (signum <= 0) {
PyErr_Format(PyExc_ValueError, "invalid WTERMSIG: %i", signum);
return NULL;
}
exitcode = -signum;
} else if (WIFSTOPPED(wait_status)) {
/* Status only received if the process is being traced
or if waitpid() was called with WUNTRACED option. */
int signum = WSTOPSIG(wait_status);
PyErr_Format(PyExc_ValueError,
"process stopped by delivery of signal %i",
signum);
return NULL;
}
else {
PyErr_Format(PyExc_ValueError, "invalid wait status: %i", status);
return NULL;
}
return PyLong_FromLong(exitcode);
#else
/* Windows implementation: see os.waitpid() implementation
which uses _cwait(). */
unsigned long long status = PyLong_AsUnsignedLongLong(status_obj);
if (status == (unsigned long long)-1 && PyErr_Occurred()) {
return NULL;
}
unsigned long long exitcode = (status >> 8);
/* ExitProcess() accepts an UINT type:
reject exit code which doesn't fit in an UINT */
if (exitcode > UINT_MAX) {
PyErr_Format(PyExc_ValueError, "invalid exit code: %llu", exitcode);
return NULL;
}
return PyLong_FromUnsignedLong((unsigned long)exitcode);
#endif
}
#endif
static PyMethodDef posix_methods[] = {
OS_STAT_METHODDEF
OS_ACCESS_METHODDEF
OS_TTYNAME_METHODDEF
OS_CHDIR_METHODDEF
OS_CHFLAGS_METHODDEF
OS_CHMOD_METHODDEF
OS_FCHMOD_METHODDEF
OS_LCHMOD_METHODDEF
OS_CHOWN_METHODDEF
OS_FCHOWN_METHODDEF
OS_LCHOWN_METHODDEF
OS_LCHFLAGS_METHODDEF
OS_CHROOT_METHODDEF
OS_CTERMID_METHODDEF
OS_GETCWD_METHODDEF
OS_GETCWDB_METHODDEF
OS_LINK_METHODDEF
OS_LISTDIR_METHODDEF
OS_LSTAT_METHODDEF
OS_MKDIR_METHODDEF
OS_NICE_METHODDEF
OS_GETPRIORITY_METHODDEF
OS_SETPRIORITY_METHODDEF
OS_POSIX_SPAWN_METHODDEF
OS_POSIX_SPAWNP_METHODDEF
OS_READLINK_METHODDEF
OS_COPY_FILE_RANGE_METHODDEF
OS_SPLICE_METHODDEF
OS_RENAME_METHODDEF
OS_REPLACE_METHODDEF
OS_RMDIR_METHODDEF
OS_SYMLINK_METHODDEF
OS_SYSTEM_METHODDEF
OS_UMASK_METHODDEF
OS_UNAME_METHODDEF
OS_UNLINK_METHODDEF
OS_REMOVE_METHODDEF
OS_UTIME_METHODDEF
OS_TIMES_METHODDEF
OS__EXIT_METHODDEF
OS__FCOPYFILE_METHODDEF
OS_EXECV_METHODDEF
OS_EXECVE_METHODDEF
OS_SPAWNV_METHODDEF
OS_SPAWNVE_METHODDEF
OS_FORK1_METHODDEF
OS_FORK_METHODDEF
OS_REGISTER_AT_FORK_METHODDEF
OS_SCHED_GET_PRIORITY_MAX_METHODDEF
OS_SCHED_GET_PRIORITY_MIN_METHODDEF
OS_SCHED_GETPARAM_METHODDEF
OS_SCHED_GETSCHEDULER_METHODDEF
OS_SCHED_RR_GET_INTERVAL_METHODDEF
OS_SCHED_SETPARAM_METHODDEF
OS_SCHED_SETSCHEDULER_METHODDEF
OS_SCHED_YIELD_METHODDEF
OS_SCHED_SETAFFINITY_METHODDEF
OS_SCHED_GETAFFINITY_METHODDEF
OS_OPENPTY_METHODDEF
OS_LOGIN_TTY_METHODDEF
OS_FORKPTY_METHODDEF
OS_GETEGID_METHODDEF
OS_GETEUID_METHODDEF
OS_GETGID_METHODDEF
OS_GETGROUPLIST_METHODDEF
OS_GETGROUPS_METHODDEF
OS_GETPID_METHODDEF
OS_GETPGRP_METHODDEF
OS_GETPPID_METHODDEF
OS_GETUID_METHODDEF
OS_GETLOGIN_METHODDEF
OS_KILL_METHODDEF
OS_KILLPG_METHODDEF
OS_PLOCK_METHODDEF
OS_STARTFILE_METHODDEF
OS_SETUID_METHODDEF
OS_SETEUID_METHODDEF
OS_SETREUID_METHODDEF
OS_SETGID_METHODDEF
OS_SETEGID_METHODDEF
OS_SETREGID_METHODDEF
OS_SETGROUPS_METHODDEF
OS_INITGROUPS_METHODDEF
OS_GETPGID_METHODDEF
OS_SETPGRP_METHODDEF
OS_WAIT_METHODDEF
OS_WAIT3_METHODDEF
OS_WAIT4_METHODDEF
OS_WAITID_METHODDEF
OS_WAITPID_METHODDEF
OS_PIDFD_OPEN_METHODDEF
OS_GETSID_METHODDEF
OS_SETSID_METHODDEF
OS_SETPGID_METHODDEF
OS_TCGETPGRP_METHODDEF
OS_TCSETPGRP_METHODDEF
OS_OPEN_METHODDEF
OS_CLOSE_METHODDEF
OS_CLOSERANGE_METHODDEF
OS_DEVICE_ENCODING_METHODDEF
OS_DUP_METHODDEF
OS_DUP2_METHODDEF
OS_LOCKF_METHODDEF
OS_LSEEK_METHODDEF
OS_READ_METHODDEF
OS_READV_METHODDEF
OS_PREAD_METHODDEF
OS_PREADV_METHODDEF
OS_WRITE_METHODDEF
OS_WRITEV_METHODDEF
OS_PWRITE_METHODDEF
OS_PWRITEV_METHODDEF
OS_SENDFILE_METHODDEF
OS_FSTAT_METHODDEF
OS_ISATTY_METHODDEF
OS_PIPE_METHODDEF
OS_PIPE2_METHODDEF
OS_MKFIFO_METHODDEF
OS_MKNOD_METHODDEF
OS_MAJOR_METHODDEF
OS_MINOR_METHODDEF
OS_MAKEDEV_METHODDEF
OS_FTRUNCATE_METHODDEF
OS_TRUNCATE_METHODDEF
OS_POSIX_FALLOCATE_METHODDEF
OS_POSIX_FADVISE_METHODDEF
OS_PUTENV_METHODDEF
OS_UNSETENV_METHODDEF
OS_STRERROR_METHODDEF
OS_FCHDIR_METHODDEF
OS_FSYNC_METHODDEF
OS_SYNC_METHODDEF
OS_FDATASYNC_METHODDEF
OS_WCOREDUMP_METHODDEF
OS_WIFCONTINUED_METHODDEF
OS_WIFSTOPPED_METHODDEF
OS_WIFSIGNALED_METHODDEF
OS_WIFEXITED_METHODDEF
OS_WEXITSTATUS_METHODDEF
OS_WTERMSIG_METHODDEF
OS_WSTOPSIG_METHODDEF
OS_FSTATVFS_METHODDEF
OS_STATVFS_METHODDEF
OS_CONFSTR_METHODDEF
OS_SYSCONF_METHODDEF
OS_FPATHCONF_METHODDEF
OS_PATHCONF_METHODDEF
OS_ABORT_METHODDEF
OS__GETFULLPATHNAME_METHODDEF
OS__GETDISKUSAGE_METHODDEF
OS__GETFINALPATHNAME_METHODDEF
OS__GETVOLUMEPATHNAME_METHODDEF
OS__PATH_SPLITROOT_METHODDEF
OS__PATH_NORMPATH_METHODDEF
OS_GETLOADAVG_METHODDEF
OS_URANDOM_METHODDEF
OS_SETRESUID_METHODDEF
OS_SETRESGID_METHODDEF
OS_GETRESUID_METHODDEF
OS_GETRESGID_METHODDEF
OS_GETXATTR_METHODDEF
OS_SETXATTR_METHODDEF
OS_REMOVEXATTR_METHODDEF
OS_LISTXATTR_METHODDEF
OS_GET_TERMINAL_SIZE_METHODDEF
OS_CPU_COUNT_METHODDEF
OS_GET_INHERITABLE_METHODDEF
OS_SET_INHERITABLE_METHODDEF
OS_GET_HANDLE_INHERITABLE_METHODDEF
OS_SET_HANDLE_INHERITABLE_METHODDEF
OS_GET_BLOCKING_METHODDEF
OS_SET_BLOCKING_METHODDEF
OS_SCANDIR_METHODDEF
OS_FSPATH_METHODDEF
OS_GETRANDOM_METHODDEF
OS_MEMFD_CREATE_METHODDEF
OS_EVENTFD_METHODDEF
OS_EVENTFD_READ_METHODDEF
OS_EVENTFD_WRITE_METHODDEF
OS__ADD_DLL_DIRECTORY_METHODDEF
OS__REMOVE_DLL_DIRECTORY_METHODDEF
OS_WAITSTATUS_TO_EXITCODE_METHODDEF
{NULL, NULL} /* Sentinel */
};
static int
all_ins(PyObject *m)
{
#ifdef F_OK
if (PyModule_AddIntMacro(m, F_OK)) return -1;
#endif
#ifdef R_OK
if (PyModule_AddIntMacro(m, R_OK)) return -1;
#endif
#ifdef W_OK
if (PyModule_AddIntMacro(m, W_OK)) return -1;
#endif
#ifdef X_OK
if (PyModule_AddIntMacro(m, X_OK)) return -1;
#endif
#ifdef NGROUPS_MAX
if (PyModule_AddIntMacro(m, NGROUPS_MAX)) return -1;
#endif
#ifdef TMP_MAX
if (PyModule_AddIntMacro(m, TMP_MAX)) return -1;
#endif
#ifdef WCONTINUED
if (PyModule_AddIntMacro(m, WCONTINUED)) return -1;
#endif
#ifdef WNOHANG
if (PyModule_AddIntMacro(m, WNOHANG)) return -1;
#endif
#ifdef WUNTRACED
if (PyModule_AddIntMacro(m, WUNTRACED)) return -1;
#endif
#ifdef O_RDONLY
if (PyModule_AddIntMacro(m, O_RDONLY)) return -1;
#endif
#ifdef O_WRONLY
if (PyModule_AddIntMacro(m, O_WRONLY)) return -1;
#endif
#ifdef O_RDWR
if (PyModule_AddIntMacro(m, O_RDWR)) return -1;
#endif
#ifdef O_NDELAY
if (PyModule_AddIntMacro(m, O_NDELAY)) return -1;
#endif
#ifdef O_NONBLOCK
if (PyModule_AddIntMacro(m, O_NONBLOCK)) return -1;
#endif
#ifdef O_APPEND
if (PyModule_AddIntMacro(m, O_APPEND)) return -1;
#endif
#ifdef O_DSYNC
if (PyModule_AddIntMacro(m, O_DSYNC)) return -1;
#endif
#ifdef O_RSYNC
if (PyModule_AddIntMacro(m, O_RSYNC)) return -1;
#endif
#ifdef O_SYNC
if (PyModule_AddIntMacro(m, O_SYNC)) return -1;
#endif
#ifdef O_NOCTTY
if (PyModule_AddIntMacro(m, O_NOCTTY)) return -1;
#endif
#ifdef O_CREAT
if (PyModule_AddIntMacro(m, O_CREAT)) return -1;
#endif
#ifdef O_EXCL
if (PyModule_AddIntMacro(m, O_EXCL)) return -1;
#endif
#ifdef O_TRUNC
if (PyModule_AddIntMacro(m, O_TRUNC)) return -1;
#endif
#ifdef O_BINARY
if (PyModule_AddIntMacro(m, O_BINARY)) return -1;
#endif
#ifdef O_TEXT
if (PyModule_AddIntMacro(m, O_TEXT)) return -1;
#endif
#ifdef O_XATTR
if (PyModule_AddIntMacro(m, O_XATTR)) return -1;
#endif
#ifdef O_LARGEFILE
if (PyModule_AddIntMacro(m, O_LARGEFILE)) return -1;
#endif
#ifndef __GNU__
#ifdef O_SHLOCK
if (PyModule_AddIntMacro(m, O_SHLOCK)) return -1;
#endif
#ifdef O_EXLOCK
if (PyModule_AddIntMacro(m, O_EXLOCK)) return -1;
#endif
#endif
#ifdef O_EXEC
if (PyModule_AddIntMacro(m, O_EXEC)) return -1;
#endif
#ifdef O_SEARCH
if (PyModule_AddIntMacro(m, O_SEARCH)) return -1;
#endif
#ifdef O_PATH
if (PyModule_AddIntMacro(m, O_PATH)) return -1;
#endif
#ifdef O_TTY_INIT
if (PyModule_AddIntMacro(m, O_TTY_INIT)) return -1;
#endif
#ifdef O_TMPFILE
if (PyModule_AddIntMacro(m, O_TMPFILE)) return -1;
#endif
#ifdef PRIO_PROCESS
if (PyModule_AddIntMacro(m, PRIO_PROCESS)) return -1;
#endif
#ifdef PRIO_PGRP
if (PyModule_AddIntMacro(m, PRIO_PGRP)) return -1;
#endif
#ifdef PRIO_USER
if (PyModule_AddIntMacro(m, PRIO_USER)) return -1;
#endif
#ifdef O_CLOEXEC
if (PyModule_AddIntMacro(m, O_CLOEXEC)) return -1;
#endif
#ifdef O_ACCMODE
if (PyModule_AddIntMacro(m, O_ACCMODE)) return -1;
#endif
#ifdef O_EVTONLY
if (PyModule_AddIntMacro(m, O_EVTONLY)) return -1;
#endif
#ifdef O_FSYNC
if (PyModule_AddIntMacro(m, O_FSYNC)) return -1;
#endif
#ifdef O_SYMLINK
if (PyModule_AddIntMacro(m, O_SYMLINK)) return -1;
#endif
#ifdef SEEK_HOLE
if (PyModule_AddIntMacro(m, SEEK_HOLE)) return -1;
#endif
#ifdef SEEK_DATA
if (PyModule_AddIntMacro(m, SEEK_DATA)) return -1;
#endif
/* MS Windows */
#ifdef O_NOINHERIT
/* Don't inherit in child processes. */
if (PyModule_AddIntMacro(m, O_NOINHERIT)) return -1;
#endif
#ifdef _O_SHORT_LIVED
/* Optimize for short life (keep in memory). */
/* MS forgot to define this one with a non-underscore form too. */
if (PyModule_AddIntConstant(m, "O_SHORT_LIVED", _O_SHORT_LIVED)) return -1;
#endif
#ifdef O_TEMPORARY
/* Automatically delete when last handle is closed. */
if (PyModule_AddIntMacro(m, O_TEMPORARY)) return -1;
#endif
#ifdef O_RANDOM
/* Optimize for random access. */
if (PyModule_AddIntMacro(m, O_RANDOM)) return -1;
#endif
#ifdef O_SEQUENTIAL
/* Optimize for sequential access. */
if (PyModule_AddIntMacro(m, O_SEQUENTIAL)) return -1;
#endif
/* GNU extensions. */
#ifdef O_ASYNC
/* Send a SIGIO signal whenever input or output
becomes available on file descriptor */
if (PyModule_AddIntMacro(m, O_ASYNC)) return -1;
#endif
#ifdef O_DIRECT
/* Direct disk access. */
if (PyModule_AddIntMacro(m, O_DIRECT)) return -1;
#endif
#ifdef O_DIRECTORY
/* Must be a directory. */
if (PyModule_AddIntMacro(m, O_DIRECTORY)) return -1;
#endif
#ifdef O_NOFOLLOW
/* Do not follow links. */
if (PyModule_AddIntMacro(m, O_NOFOLLOW)) return -1;
#endif
#ifdef O_NOFOLLOW_ANY
if (PyModule_AddIntMacro(m, O_NOFOLLOW_ANY)) return -1;
#endif
#ifdef O_NOLINKS
/* Fails if link count of the named file is greater than 1 */
if (PyModule_AddIntMacro(m, O_NOLINKS)) return -1;
#endif
#ifdef O_NOATIME
/* Do not update the access time. */
if (PyModule_AddIntMacro(m, O_NOATIME)) return -1;
#endif
/* These come from sysexits.h */
#ifdef EX_OK
if (PyModule_AddIntMacro(m, EX_OK)) return -1;
#endif /* EX_OK */
#ifdef EX_USAGE
if (PyModule_AddIntMacro(m, EX_USAGE)) return -1;
#endif /* EX_USAGE */
#ifdef EX_DATAERR
if (PyModule_AddIntMacro(m, EX_DATAERR)) return -1;
#endif /* EX_DATAERR */
#ifdef EX_NOINPUT
if (PyModule_AddIntMacro(m, EX_NOINPUT)) return -1;
#endif /* EX_NOINPUT */
#ifdef EX_NOUSER
if (PyModule_AddIntMacro(m, EX_NOUSER)) return -1;
#endif /* EX_NOUSER */
#ifdef EX_NOHOST
if (PyModule_AddIntMacro(m, EX_NOHOST)) return -1;
#endif /* EX_NOHOST */
#ifdef EX_UNAVAILABLE
if (PyModule_AddIntMacro(m, EX_UNAVAILABLE)) return -1;
#endif /* EX_UNAVAILABLE */
#ifdef EX_SOFTWARE
if (PyModule_AddIntMacro(m, EX_SOFTWARE)) return -1;
#endif /* EX_SOFTWARE */
#ifdef EX_OSERR
if (PyModule_AddIntMacro(m, EX_OSERR)) return -1;
#endif /* EX_OSERR */
#ifdef EX_OSFILE
if (PyModule_AddIntMacro(m, EX_OSFILE)) return -1;
#endif /* EX_OSFILE */
#ifdef EX_CANTCREAT
if (PyModule_AddIntMacro(m, EX_CANTCREAT)) return -1;
#endif /* EX_CANTCREAT */
#ifdef EX_IOERR
if (PyModule_AddIntMacro(m, EX_IOERR)) return -1;
#endif /* EX_IOERR */
#ifdef EX_TEMPFAIL
if (PyModule_AddIntMacro(m, EX_TEMPFAIL)) return -1;
#endif /* EX_TEMPFAIL */
#ifdef EX_PROTOCOL
if (PyModule_AddIntMacro(m, EX_PROTOCOL)) return -1;
#endif /* EX_PROTOCOL */
#ifdef EX_NOPERM
if (PyModule_AddIntMacro(m, EX_NOPERM)) return -1;
#endif /* EX_NOPERM */
#ifdef EX_CONFIG
if (PyModule_AddIntMacro(m, EX_CONFIG)) return -1;
#endif /* EX_CONFIG */
#ifdef EX_NOTFOUND
if (PyModule_AddIntMacro(m, EX_NOTFOUND)) return -1;
#endif /* EX_NOTFOUND */
/* statvfs */
#ifdef ST_RDONLY
if (PyModule_AddIntMacro(m, ST_RDONLY)) return -1;
#endif /* ST_RDONLY */
#ifdef ST_NOSUID
if (PyModule_AddIntMacro(m, ST_NOSUID)) return -1;
#endif /* ST_NOSUID */
/* GNU extensions */
#ifdef ST_NODEV
if (PyModule_AddIntMacro(m, ST_NODEV)) return -1;
#endif /* ST_NODEV */
#ifdef ST_NOEXEC
if (PyModule_AddIntMacro(m, ST_NOEXEC)) return -1;
#endif /* ST_NOEXEC */
#ifdef ST_SYNCHRONOUS
if (PyModule_AddIntMacro(m, ST_SYNCHRONOUS)) return -1;
#endif /* ST_SYNCHRONOUS */
#ifdef ST_MANDLOCK
if (PyModule_AddIntMacro(m, ST_MANDLOCK)) return -1;
#endif /* ST_MANDLOCK */
#ifdef ST_WRITE
if (PyModule_AddIntMacro(m, ST_WRITE)) return -1;
#endif /* ST_WRITE */
#ifdef ST_APPEND
if (PyModule_AddIntMacro(m, ST_APPEND)) return -1;
#endif /* ST_APPEND */
#ifdef ST_NOATIME
if (PyModule_AddIntMacro(m, ST_NOATIME)) return -1;
#endif /* ST_NOATIME */
#ifdef ST_NODIRATIME
if (PyModule_AddIntMacro(m, ST_NODIRATIME)) return -1;
#endif /* ST_NODIRATIME */
#ifdef ST_RELATIME
if (PyModule_AddIntMacro(m, ST_RELATIME)) return -1;
#endif /* ST_RELATIME */
/* FreeBSD sendfile() constants */
#ifdef SF_NODISKIO
if (PyModule_AddIntMacro(m, SF_NODISKIO)) return -1;
#endif
/* is obsolete since the 11.x release */
#ifdef SF_MNOWAIT
if (PyModule_AddIntMacro(m, SF_MNOWAIT)) return -1;
#endif
#ifdef SF_SYNC
if (PyModule_AddIntMacro(m, SF_SYNC)) return -1;
#endif
#ifdef SF_NOCACHE
if (PyModule_AddIntMacro(m, SF_NOCACHE)) return -1;
#endif
/* constants for posix_fadvise */
#ifdef POSIX_FADV_NORMAL
if (PyModule_AddIntMacro(m, POSIX_FADV_NORMAL)) return -1;
#endif
#ifdef POSIX_FADV_SEQUENTIAL
if (PyModule_AddIntMacro(m, POSIX_FADV_SEQUENTIAL)) return -1;
#endif
#ifdef POSIX_FADV_RANDOM
if (PyModule_AddIntMacro(m, POSIX_FADV_RANDOM)) return -1;
#endif
#ifdef POSIX_FADV_NOREUSE
if (PyModule_AddIntMacro(m, POSIX_FADV_NOREUSE)) return -1;
#endif
#ifdef POSIX_FADV_WILLNEED
if (PyModule_AddIntMacro(m, POSIX_FADV_WILLNEED)) return -1;
#endif
#ifdef POSIX_FADV_DONTNEED
if (PyModule_AddIntMacro(m, POSIX_FADV_DONTNEED)) return -1;
#endif
/* constants for waitid */
#if defined(HAVE_SYS_WAIT_H) && defined(HAVE_WAITID)
if (PyModule_AddIntMacro(m, P_PID)) return -1;
if (PyModule_AddIntMacro(m, P_PGID)) return -1;
if (PyModule_AddIntMacro(m, P_ALL)) return -1;
#ifdef P_PIDFD
if (PyModule_AddIntMacro(m, P_PIDFD)) return -1;
#endif
#endif
#ifdef WEXITED
if (PyModule_AddIntMacro(m, WEXITED)) return -1;
#endif
#ifdef WNOWAIT
if (PyModule_AddIntMacro(m, WNOWAIT)) return -1;
#endif
#ifdef WSTOPPED
if (PyModule_AddIntMacro(m, WSTOPPED)) return -1;
#endif
#ifdef CLD_EXITED
if (PyModule_AddIntMacro(m, CLD_EXITED)) return -1;
#endif
#ifdef CLD_KILLED
if (PyModule_AddIntMacro(m, CLD_KILLED)) return -1;
#endif
#ifdef CLD_DUMPED
if (PyModule_AddIntMacro(m, CLD_DUMPED)) return -1;
#endif
#ifdef CLD_TRAPPED
if (PyModule_AddIntMacro(m, CLD_TRAPPED)) return -1;
#endif
#ifdef CLD_STOPPED
if (PyModule_AddIntMacro(m, CLD_STOPPED)) return -1;
#endif
#ifdef CLD_CONTINUED
if (PyModule_AddIntMacro(m, CLD_CONTINUED)) return -1;
#endif
/* constants for lockf */
#ifdef F_LOCK
if (PyModule_AddIntMacro(m, F_LOCK)) return -1;
#endif
#ifdef F_TLOCK
if (PyModule_AddIntMacro(m, F_TLOCK)) return -1;
#endif
#ifdef F_ULOCK
if (PyModule_AddIntMacro(m, F_ULOCK)) return -1;
#endif
#ifdef F_TEST
if (PyModule_AddIntMacro(m, F_TEST)) return -1;
#endif
#ifdef RWF_DSYNC
if (PyModule_AddIntConstant(m, "RWF_DSYNC", RWF_DSYNC)) return -1;
#endif
#ifdef RWF_HIPRI
if (PyModule_AddIntConstant(m, "RWF_HIPRI", RWF_HIPRI)) return -1;
#endif
#ifdef RWF_SYNC
if (PyModule_AddIntConstant(m, "RWF_SYNC", RWF_SYNC)) return -1;
#endif
#ifdef RWF_NOWAIT
if (PyModule_AddIntConstant(m, "RWF_NOWAIT", RWF_NOWAIT)) return -1;
#endif
#ifdef RWF_APPEND
if (PyModule_AddIntConstant(m, "RWF_APPEND", RWF_APPEND)) return -1;
#endif
/* constants for splice */
#if defined(HAVE_SPLICE) && defined(__linux__)
if (PyModule_AddIntConstant(m, "SPLICE_F_MOVE", SPLICE_F_MOVE)) return -1;
if (PyModule_AddIntConstant(m, "SPLICE_F_NONBLOCK", SPLICE_F_NONBLOCK)) return -1;
if (PyModule_AddIntConstant(m, "SPLICE_F_MORE", SPLICE_F_MORE)) return -1;
#endif
/* constants for posix_spawn */
#ifdef HAVE_POSIX_SPAWN
if (PyModule_AddIntConstant(m, "POSIX_SPAWN_OPEN", POSIX_SPAWN_OPEN)) return -1;
if (PyModule_AddIntConstant(m, "POSIX_SPAWN_CLOSE", POSIX_SPAWN_CLOSE)) return -1;
if (PyModule_AddIntConstant(m, "POSIX_SPAWN_DUP2", POSIX_SPAWN_DUP2)) return -1;
#endif
#if defined(HAVE_SPAWNV) || defined (HAVE_RTPSPAWN)
if (PyModule_AddIntConstant(m, "P_WAIT", _P_WAIT)) return -1;
if (PyModule_AddIntConstant(m, "P_NOWAIT", _P_NOWAIT)) return -1;
if (PyModule_AddIntConstant(m, "P_NOWAITO", _P_NOWAITO)) return -1;
#endif
#ifdef HAVE_SPAWNV
if (PyModule_AddIntConstant(m, "P_OVERLAY", _OLD_P_OVERLAY)) return -1;
if (PyModule_AddIntConstant(m, "P_DETACH", _P_DETACH)) return -1;
#endif
#ifdef HAVE_SCHED_H
#ifdef SCHED_OTHER
if (PyModule_AddIntMacro(m, SCHED_OTHER)) return -1;
#endif
#ifdef SCHED_FIFO
if (PyModule_AddIntMacro(m, SCHED_FIFO)) return -1;
#endif
#ifdef SCHED_RR
if (PyModule_AddIntMacro(m, SCHED_RR)) return -1;
#endif
#ifdef SCHED_SPORADIC
if (PyModule_AddIntMacro(m, SCHED_SPORADIC)) return -1;
#endif
#ifdef SCHED_BATCH
if (PyModule_AddIntMacro(m, SCHED_BATCH)) return -1;
#endif
#ifdef SCHED_IDLE
if (PyModule_AddIntMacro(m, SCHED_IDLE)) return -1;
#endif
#ifdef SCHED_RESET_ON_FORK
if (PyModule_AddIntMacro(m, SCHED_RESET_ON_FORK)) return -1;
#endif
#ifdef SCHED_SYS
if (PyModule_AddIntMacro(m, SCHED_SYS)) return -1;
#endif
#ifdef SCHED_IA
if (PyModule_AddIntMacro(m, SCHED_IA)) return -1;
#endif
#ifdef SCHED_FSS
if (PyModule_AddIntMacro(m, SCHED_FSS)) return -1;
#endif
#ifdef SCHED_FX
if (PyModule_AddIntConstant(m, "SCHED_FX", SCHED_FSS)) return -1;
#endif
#endif
#ifdef USE_XATTRS
if (PyModule_AddIntMacro(m, XATTR_CREATE)) return -1;
if (PyModule_AddIntMacro(m, XATTR_REPLACE)) return -1;
if (PyModule_AddIntMacro(m, XATTR_SIZE_MAX)) return -1;
#endif
#if HAVE_DECL_RTLD_LAZY
if (PyModule_AddIntMacro(m, RTLD_LAZY)) return -1;
#endif
#if HAVE_DECL_RTLD_NOW
if (PyModule_AddIntMacro(m, RTLD_NOW)) return -1;
#endif
#if HAVE_DECL_RTLD_GLOBAL
if (PyModule_AddIntMacro(m, RTLD_GLOBAL)) return -1;
#endif
#if HAVE_DECL_RTLD_LOCAL
if (PyModule_AddIntMacro(m, RTLD_LOCAL)) return -1;
#endif
#if HAVE_DECL_RTLD_NODELETE
if (PyModule_AddIntMacro(m, RTLD_NODELETE)) return -1;
#endif
#if HAVE_DECL_RTLD_NOLOAD
if (PyModule_AddIntMacro(m, RTLD_NOLOAD)) return -1;
#endif
#if HAVE_DECL_RTLD_DEEPBIND
if (PyModule_AddIntMacro(m, RTLD_DEEPBIND)) return -1;
#endif
#if HAVE_DECL_RTLD_MEMBER
if (PyModule_AddIntMacro(m, RTLD_MEMBER)) return -1;
#endif
#ifdef HAVE_GETRANDOM_SYSCALL
if (PyModule_AddIntMacro(m, GRND_RANDOM)) return -1;
if (PyModule_AddIntMacro(m, GRND_NONBLOCK)) return -1;
#endif
#ifdef HAVE_MEMFD_CREATE
if (PyModule_AddIntMacro(m, MFD_CLOEXEC)) return -1;
if (PyModule_AddIntMacro(m, MFD_ALLOW_SEALING)) return -1;
#ifdef MFD_HUGETLB
if (PyModule_AddIntMacro(m, MFD_HUGETLB)) return -1;
#endif
#ifdef MFD_HUGE_SHIFT
if (PyModule_AddIntMacro(m, MFD_HUGE_SHIFT)) return -1;
#endif
#ifdef MFD_HUGE_MASK
if (PyModule_AddIntMacro(m, MFD_HUGE_MASK)) return -1;
#endif
#ifdef MFD_HUGE_64KB
if (PyModule_AddIntMacro(m, MFD_HUGE_64KB)) return -1;
#endif
#ifdef MFD_HUGE_512KB
if (PyModule_AddIntMacro(m, MFD_HUGE_512KB)) return -1;
#endif
#ifdef MFD_HUGE_1MB
if (PyModule_AddIntMacro(m, MFD_HUGE_1MB)) return -1;
#endif
#ifdef MFD_HUGE_2MB
if (PyModule_AddIntMacro(m, MFD_HUGE_2MB)) return -1;
#endif
#ifdef MFD_HUGE_8MB
if (PyModule_AddIntMacro(m, MFD_HUGE_8MB)) return -1;
#endif
#ifdef MFD_HUGE_16MB
if (PyModule_AddIntMacro(m, MFD_HUGE_16MB)) return -1;
#endif
#ifdef MFD_HUGE_32MB
if (PyModule_AddIntMacro(m, MFD_HUGE_32MB)) return -1;
#endif
#ifdef MFD_HUGE_256MB
if (PyModule_AddIntMacro(m, MFD_HUGE_256MB)) return -1;
#endif
#ifdef MFD_HUGE_512MB
if (PyModule_AddIntMacro(m, MFD_HUGE_512MB)) return -1;
#endif
#ifdef MFD_HUGE_1GB
if (PyModule_AddIntMacro(m, MFD_HUGE_1GB)) return -1;
#endif
#ifdef MFD_HUGE_2GB
if (PyModule_AddIntMacro(m, MFD_HUGE_2GB)) return -1;
#endif
#ifdef MFD_HUGE_16GB
if (PyModule_AddIntMacro(m, MFD_HUGE_16GB)) return -1;
#endif
#endif /* HAVE_MEMFD_CREATE */
#if defined(HAVE_EVENTFD) && defined(EFD_CLOEXEC)
if (PyModule_AddIntMacro(m, EFD_CLOEXEC)) return -1;
#ifdef EFD_NONBLOCK
if (PyModule_AddIntMacro(m, EFD_NONBLOCK)) return -1;
#endif
#ifdef EFD_SEMAPHORE
if (PyModule_AddIntMacro(m, EFD_SEMAPHORE)) return -1;
#endif
#endif /* HAVE_EVENTFD && EFD_CLOEXEC */
#if defined(__APPLE__)
if (PyModule_AddIntConstant(m, "_COPYFILE_DATA", COPYFILE_DATA)) return -1;
if (PyModule_AddIntConstant(m, "_COPYFILE_STAT", COPYFILE_STAT)) return -1;
if (PyModule_AddIntConstant(m, "_COPYFILE_ACL", COPYFILE_ACL)) return -1;
if (PyModule_AddIntConstant(m, "_COPYFILE_XATTR", COPYFILE_XATTR)) return -1;
#endif
#ifdef MS_WINDOWS
if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_DEFAULT_DIRS", LOAD_LIBRARY_SEARCH_DEFAULT_DIRS)) return -1;
if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_APPLICATION_DIR", LOAD_LIBRARY_SEARCH_APPLICATION_DIR)) return -1;
if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_SYSTEM32", LOAD_LIBRARY_SEARCH_SYSTEM32)) return -1;
if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_USER_DIRS", LOAD_LIBRARY_SEARCH_USER_DIRS)) return -1;
if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR", LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR)) return -1;
#endif
return 0;
}
#define PROBE(name, test) \
static int name(void) \
{ \
if (test) { \
return 1; \
} else { \
return 0; \
} \
}
#ifdef HAVE_FSTATAT
PROBE(probe_fstatat, HAVE_FSTATAT_RUNTIME)
#endif
#ifdef HAVE_FACCESSAT
PROBE(probe_faccessat, HAVE_FACCESSAT_RUNTIME)
#endif
#ifdef HAVE_FCHMODAT
PROBE(probe_fchmodat, HAVE_FCHMODAT_RUNTIME)
#endif
#ifdef HAVE_FCHOWNAT
PROBE(probe_fchownat, HAVE_FCHOWNAT_RUNTIME)
#endif
#ifdef HAVE_LINKAT
PROBE(probe_linkat, HAVE_LINKAT_RUNTIME)
#endif
#ifdef HAVE_FDOPENDIR
PROBE(probe_fdopendir, HAVE_FDOPENDIR_RUNTIME)
#endif
#ifdef HAVE_MKDIRAT
PROBE(probe_mkdirat, HAVE_MKDIRAT_RUNTIME)
#endif
#ifdef HAVE_RENAMEAT
PROBE(probe_renameat, HAVE_RENAMEAT_RUNTIME)
#endif
#ifdef HAVE_UNLINKAT
PROBE(probe_unlinkat, HAVE_UNLINKAT_RUNTIME)
#endif
#ifdef HAVE_OPENAT
PROBE(probe_openat, HAVE_OPENAT_RUNTIME)
#endif
#ifdef HAVE_READLINKAT
PROBE(probe_readlinkat, HAVE_READLINKAT_RUNTIME)
#endif
#ifdef HAVE_SYMLINKAT
PROBE(probe_symlinkat, HAVE_SYMLINKAT_RUNTIME)
#endif
#ifdef HAVE_FUTIMENS
PROBE(probe_futimens, HAVE_FUTIMENS_RUNTIME)
#endif
#ifdef HAVE_UTIMENSAT
PROBE(probe_utimensat, HAVE_UTIMENSAT_RUNTIME)
#endif
static const struct have_function {
const char * const label;
int (*probe)(void);
} have_functions[] = {
#ifdef HAVE_EVENTFD
{"HAVE_EVENTFD", NULL},
#endif
#ifdef HAVE_FACCESSAT
{ "HAVE_FACCESSAT", probe_faccessat },
#endif
#ifdef HAVE_FCHDIR
{ "HAVE_FCHDIR", NULL },
#endif
#ifdef HAVE_FCHMOD
{ "HAVE_FCHMOD", NULL },
#endif
#ifdef HAVE_FCHMODAT
{ "HAVE_FCHMODAT", probe_fchmodat },
#endif
#ifdef HAVE_FCHOWN
{ "HAVE_FCHOWN", NULL },
#endif
#ifdef HAVE_FCHOWNAT
{ "HAVE_FCHOWNAT", probe_fchownat },
#endif
#ifdef HAVE_FEXECVE
{ "HAVE_FEXECVE", NULL },
#endif
#ifdef HAVE_FDOPENDIR
{ "HAVE_FDOPENDIR", probe_fdopendir },
#endif
#ifdef HAVE_FPATHCONF
{ "HAVE_FPATHCONF", NULL },
#endif
#ifdef HAVE_FSTATAT
{ "HAVE_FSTATAT", probe_fstatat },
#endif
#ifdef HAVE_FSTATVFS
{ "HAVE_FSTATVFS", NULL },
#endif
#if defined HAVE_FTRUNCATE || defined MS_WINDOWS
{ "HAVE_FTRUNCATE", NULL },
#endif
#ifdef HAVE_FUTIMENS
{ "HAVE_FUTIMENS", probe_futimens },
#endif
#ifdef HAVE_FUTIMES
{ "HAVE_FUTIMES", NULL },
#endif
#ifdef HAVE_FUTIMESAT
{ "HAVE_FUTIMESAT", NULL },
#endif
#ifdef HAVE_LINKAT
{ "HAVE_LINKAT", probe_linkat },
#endif
#ifdef HAVE_LCHFLAGS
{ "HAVE_LCHFLAGS", NULL },
#endif
#ifdef HAVE_LCHMOD
{ "HAVE_LCHMOD", NULL },
#endif
#ifdef HAVE_LCHOWN
{ "HAVE_LCHOWN", NULL },
#endif
#ifdef HAVE_LSTAT
{ "HAVE_LSTAT", NULL },
#endif
#ifdef HAVE_LUTIMES
{ "HAVE_LUTIMES", NULL },
#endif
#ifdef HAVE_MEMFD_CREATE
{ "HAVE_MEMFD_CREATE", NULL },
#endif
#ifdef HAVE_MKDIRAT
{ "HAVE_MKDIRAT", probe_mkdirat },
#endif
#ifdef HAVE_MKFIFOAT
{ "HAVE_MKFIFOAT", NULL },
#endif
#ifdef HAVE_MKNODAT
{ "HAVE_MKNODAT", NULL },
#endif
#ifdef HAVE_OPENAT
{ "HAVE_OPENAT", probe_openat },
#endif
#ifdef HAVE_READLINKAT
{ "HAVE_READLINKAT", probe_readlinkat },
#endif
#ifdef HAVE_RENAMEAT
{ "HAVE_RENAMEAT", probe_renameat },
#endif
#ifdef HAVE_SYMLINKAT
{ "HAVE_SYMLINKAT", probe_symlinkat },
#endif
#ifdef HAVE_UNLINKAT
{ "HAVE_UNLINKAT", probe_unlinkat },
#endif
#ifdef HAVE_UTIMENSAT
{ "HAVE_UTIMENSAT", probe_utimensat },
#endif
#ifdef MS_WINDOWS
{ "MS_WINDOWS", NULL },
#endif
{ NULL, NULL }
};
static int
posixmodule_exec(PyObject *m)
{
_posixstate *state = get_posix_state(m);
#if defined(HAVE_PWRITEV)
if (HAVE_PWRITEV_RUNTIME) {} else {
PyObject* dct = PyModule_GetDict(m);
if (dct == NULL) {
return -1;
}
if (PyDict_DelItemString(dct, "pwritev") == -1) {
PyErr_Clear();
}
if (PyDict_DelItemString(dct, "preadv") == -1) {
PyErr_Clear();
}
}
#endif
/* Initialize environ dictionary */
PyObject *v = convertenviron();
Py_XINCREF(v);
if (v == NULL || PyModule_AddObject(m, "environ", v) != 0)
return -1;
Py_DECREF(v);
if (all_ins(m))
return -1;
if (setup_confname_tables(m))
return -1;
Py_INCREF(PyExc_OSError);
PyModule_AddObject(m, "error", PyExc_OSError);
#if defined(HAVE_WAITID) && !defined(__APPLE__)
waitid_result_desc.name = MODNAME ".waitid_result";
PyObject *WaitidResultType = (PyObject *)PyStructSequence_NewType(&waitid_result_desc);
if (WaitidResultType == NULL) {
return -1;
}
Py_INCREF(WaitidResultType);
PyModule_AddObject(m, "waitid_result", WaitidResultType);
state->WaitidResultType = WaitidResultType;
#endif
stat_result_desc.name = "os.stat_result"; /* see issue #19209 */
stat_result_desc.fields[7].name = PyStructSequence_UnnamedField;
stat_result_desc.fields[8].name = PyStructSequence_UnnamedField;
stat_result_desc.fields[9].name = PyStructSequence_UnnamedField;
PyObject *StatResultType = (PyObject *)PyStructSequence_NewType(&stat_result_desc);
if (StatResultType == NULL) {
return -1;
}
Py_INCREF(StatResultType);
PyModule_AddObject(m, "stat_result", StatResultType);
state->StatResultType = StatResultType;
structseq_new = ((PyTypeObject *)StatResultType)->tp_new;
((PyTypeObject *)StatResultType)->tp_new = statresult_new;
statvfs_result_desc.name = "os.statvfs_result"; /* see issue #19209 */
PyObject *StatVFSResultType = (PyObject *)PyStructSequence_NewType(&statvfs_result_desc);
if (StatVFSResultType == NULL) {
return -1;
}
Py_INCREF(StatVFSResultType);
PyModule_AddObject(m, "statvfs_result", StatVFSResultType);
state->StatVFSResultType = StatVFSResultType;
#ifdef NEED_TICKS_PER_SECOND
# if defined(HAVE_SYSCONF) && defined(_SC_CLK_TCK)
ticks_per_second = sysconf(_SC_CLK_TCK);
# elif defined(HZ)
ticks_per_second = HZ;
# else
ticks_per_second = 60; /* magic fallback value; may be bogus */
# endif
#endif
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDULER) || defined(POSIX_SPAWN_SETSCHEDPARAM)
sched_param_desc.name = MODNAME ".sched_param";
PyObject *SchedParamType = (PyObject *)PyStructSequence_NewType(&sched_param_desc);
if (SchedParamType == NULL) {
return -1;
}
Py_INCREF(SchedParamType);
PyModule_AddObject(m, "sched_param", SchedParamType);
state->SchedParamType = SchedParamType;
((PyTypeObject *)SchedParamType)->tp_new = os_sched_param;
#endif
/* initialize TerminalSize_info */
PyObject *TerminalSizeType = (PyObject *)PyStructSequence_NewType(&TerminalSize_desc);
if (TerminalSizeType == NULL) {
return -1;
}
Py_INCREF(TerminalSizeType);
PyModule_AddObject(m, "terminal_size", TerminalSizeType);
state->TerminalSizeType = TerminalSizeType;
/* initialize scandir types */
PyObject *ScandirIteratorType = PyType_FromModuleAndSpec(m, &ScandirIteratorType_spec, NULL);
if (ScandirIteratorType == NULL) {
return -1;
}
state->ScandirIteratorType = ScandirIteratorType;
PyObject *DirEntryType = PyType_FromModuleAndSpec(m, &DirEntryType_spec, NULL);
if (DirEntryType == NULL) {
return -1;
}
Py_INCREF(DirEntryType);
PyModule_AddObject(m, "DirEntry", DirEntryType);
state->DirEntryType = DirEntryType;
times_result_desc.name = MODNAME ".times_result";
PyObject *TimesResultType = (PyObject *)PyStructSequence_NewType(&times_result_desc);
if (TimesResultType == NULL) {
return -1;
}
Py_INCREF(TimesResultType);
PyModule_AddObject(m, "times_result", TimesResultType);
state->TimesResultType = TimesResultType;
PyTypeObject *UnameResultType = PyStructSequence_NewType(&uname_result_desc);
if (UnameResultType == NULL) {
return -1;
}
Py_INCREF(UnameResultType);
PyModule_AddObject(m, "uname_result", (PyObject *)UnameResultType);
state->UnameResultType = (PyObject *)UnameResultType;
if ((state->billion = PyLong_FromLong(1000000000)) == NULL)
return -1;
#if defined(HAVE_WAIT3) || defined(HAVE_WAIT4)
state->struct_rusage = PyUnicode_InternFromString("struct_rusage");
if (state->struct_rusage == NULL)
return -1;
#endif
state->st_mode = PyUnicode_InternFromString("st_mode");
if (state->st_mode == NULL)
return -1;
/* suppress "function not used" warnings */
{
int ignored;
fd_specified("", -1);
follow_symlinks_specified("", 1);
dir_fd_and_follow_symlinks_invalid("chmod", DEFAULT_DIR_FD, 1);
dir_fd_converter(Py_None, &ignored);
dir_fd_unavailable(Py_None, &ignored);
}
/*
* provide list of locally available functions
* so os.py can populate support_* lists
*/
PyObject *list = PyList_New(0);
if (!list) {
return -1;
}
for (const struct have_function *trace = have_functions; trace->label; trace++) {
PyObject *unicode;
if (trace->probe && !trace->probe()) continue;
unicode = PyUnicode_DecodeASCII(trace->label, strlen(trace->label), NULL);
if (!unicode)
return -1;
if (PyList_Append(list, unicode))
return -1;
Py_DECREF(unicode);
}
PyModule_AddObject(m, "_have_functions", list);
return 0;
}
static PyModuleDef_Slot posixmodile_slots[] = {
{Py_mod_exec, posixmodule_exec},
{0, NULL}
};
static struct PyModuleDef posixmodule = {
PyModuleDef_HEAD_INIT,
.m_name = MODNAME,
.m_doc = posix__doc__,
.m_size = sizeof(_posixstate),
.m_methods = posix_methods,
.m_slots = posixmodile_slots,
.m_traverse = _posix_traverse,
.m_clear = _posix_clear,
.m_free = _posix_free,
};
PyMODINIT_FUNC
INITFUNC(void)
{
return PyModuleDef_Init(&posixmodule);
}
#ifdef __cplusplus
}
#endif
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