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ladybird/Userland/Libraries/LibC/limits.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 09:38:21 +01:00
/*
Kernel+LibC: Enforce a limit on the number of supplementary group IDs This patch adds the NGROUPS_MAX constant and enforces it in sys$setgroups() to ensure that no process has more than 32 supplementary group IDs. The number doesn't mean anything in particular, just had to pick a number. Perhaps one day we'll have a reason to change it.
2022-08-20 22:22:58 +02:00
* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 09:38:21 +01:00
*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 09:38:21 +01:00
*/
Add getwd().
2018-11-06 15:59:57 +01:00
#pragma once
Kernel+LibC: Enforce a limit on the number of supplementary group IDs This patch adds the NGROUPS_MAX constant and enforces it in sys$setgroups() to ensure that no process has more than 32 supplementary group IDs. The number doesn't mean anything in particular, just had to pick a number. Perhaps one day we'll have a reason to change it.
2022-08-20 22:22:58 +02:00
#include <Kernel/API/POSIX/sys/limits.h>
LibC: Fix misplaced #include in limits.h posix1_lim.h only defines macros that start with _POSIX_*, and don't mention anything that might be defined in limits.h. Likewise, limits.h uses none of the _POSIX_* macros. Thus, it is okay to change the order of imports.
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#include <bits/posix1_lim.h>
Libc: make library internal includes come from private include namespace
2019-10-11 10:50:42 +01:00
#include <bits/stdint.h>
LibC: Implement ungetwc()
2021-12-19 23:29:21 +03:30
#include <bits/wchar.h>
Miscellaneous compat work while seeing if GNU coreutils would build.
2018-11-07 10:23:16 +01:00
Build: add support for building on OpenBSD This requires gcc8 from ports to build the Toolchain.
2020-01-01 20:06:14 -06:00
#ifndef PAGE_SIZE
Meta+LibC through LibHTTP: Make clang-format-10 clean Why break at LibHTTP? Because "Meta+Libraries" would be insanely large, and breaking between LibHTTP and LibJS makes the commits roughly evenly large.
2020-09-18 09:49:51 +02:00
# define PAGE_SIZE 4096
Build: add support for building on OpenBSD This requires gcc8 from ports to build the Toolchain.
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#endif
LibC: Add PAGE_SIZE to limits.h
2019-03-21 13:31:27 +01:00
Userland: Move HOST_NAME_MAX to limits.h POSIX mandates its definition there.
2021-04-25 21:05:02 +02:00
#define HOST_NAME_MAX 64
Add getwd().
2018-11-06 15:59:57 +01:00
#define PATH_MAX 4096
LibC: Add MAXPATHLEN to limits.h MAXPATHLEN defines the longest permissable path length after expanding symbolic links. It is used to allocate a temporary buffer from the buffer pool in which to do the name expansion, hence should be a power of two. On UNIX MAXPATHLEN has the same size as PATH_MAX.
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#if !defined MAXPATHLEN && defined PATH_MAX
Kernel: Move E2BIG calculation from Thread to Process Thread::make_userspace_stack_for_main_thread is only ever called from Process::do_exec, after all the fun ELF loading and TSS setup has occured. The calculations in there that check if the combined argv + envp size will exceed the default stack size are not used in the rest of the stack setup. So, it should be safe to move this to the beginning of do_exec and bail early with -E2BIG, just like the man pages say. Additionally, advertise this limit in limits.h to be a good POSIX.1 citizen. :)
2019-10-20 10:11:40 -06:00
# define MAXPATHLEN PATH_MAX
LibC: Add MAXPATHLEN to limits.h MAXPATHLEN defines the longest permissable path length after expanding symbolic links. It is used to allocate a temporary buffer from the buffer pool in which to do the name expansion, hence should be a power of two. On UNIX MAXPATHLEN has the same size as PATH_MAX.
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#endif
LibC: Add NAME_MAX (255)
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#define NAME_MAX 255
LibC: Add TTY_NAME_MAX (32)
2021-01-18 09:48:51 +01:00
#define TTY_NAME_MAX 32
LibC: Added execlp method and new pathconf setting Added execlp method, and _PC_PIPE_BUF setting to pathconf method.
2019-11-16 02:35:48 -06:00
#define PIPE_BUF 4096
Miscellaneous compat work while seeing if GNU coreutils would build.
2018-11-07 10:23:16 +01:00
#define INT_MAX INT32_MAX
#define INT_MIN INT32_MIN
Make bash-2.05b build with minimal changes. This is really neat. :^)
2018-11-17 00:11:08 +01:00
Various stubs while trying to get an old coreutils to build.
2018-11-17 15:56:09 +01:00
#define UINT_MAX UINT32_MAX
Make bash-2.05b build with minimal changes. This is really neat. :^)
2018-11-17 00:11:08 +01:00
#define CHAR_BIT 8
#define SCHAR_MIN (-128)
#define SCHAR_MAX 127
#define UCHAR_MAX 255
Various stubs while trying to get an old coreutils to build.
2018-11-17 15:56:09 +01:00
LibC: Make <limits.h> compatible with GCC so that it doesn't install a fixed header GCC installs a fixed version of the <limits.h> header as per https://gcc.gnu.org/onlinedocs/gcc/Fixed-Headers.html. The fixed header doesn't include the target's <limits.h> which in turn means that some definitions (such as PATH_MAX) aren't available. This change requires rebuilding the toolchain (Toolchain/BuildIt.sh). This fixes the flatbuffers port. The commit also removes some non-standard defines (U*_MIN) which don't appear to be used anywhere. By definition they're always 0 though so they're not strictly necessary.
2021-04-11 05:10:35 +02:00
#define SHRT_MAX 32768
#define SHRT_MIN (-SHRT_MAX - 1)
#define USHRT_MAX 65535
LibC: Define correct limits for `long` on `x86_64`
2022-04-09 04:48:11 +02:00
#ifdef __x86_64__
# define LONG_MAX 9223372036854775807L
#else
# define LONG_MAX 2147483647L
#endif
Various stubs while trying to get an old coreutils to build.
2018-11-17 15:56:09 +01:00
#define LONG_MIN (-LONG_MAX - 1L)
LibC: Define correct limits for `long` on `x86_64`
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#ifdef __x86_64__
# define ULONG_MAX 18446744073709551615UL
#else
# define ULONG_MAX 4294967295UL
#endif
LibC: Use more flexible digit parsing code, deduplicate
2020-05-10 23:01:26 +02:00
LibC: Misc additions
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#define LONG_LONG_MAX 9223372036854775807LL
#define LONG_LONG_MIN (-LONG_LONG_MAX - 1LL)
LibC: Make <limits.h> compatible with GCC so that it doesn't install a fixed header GCC installs a fixed version of the <limits.h> header as per https://gcc.gnu.org/onlinedocs/gcc/Fixed-Headers.html. The fixed header doesn't include the target's <limits.h> which in turn means that some definitions (such as PATH_MAX) aren't available. This change requires rebuilding the toolchain (Toolchain/BuildIt.sh). This fixes the flatbuffers port. The commit also removes some non-standard defines (U*_MIN) which don't appear to be used anywhere. By definition they're always 0 though so they're not strictly necessary.
2021-04-11 05:10:35 +02:00
#define LLONG_MAX LONG_LONG_MAX
#define LLONG_MIN LONG_LONG_MIN
LibC: Use more flexible digit parsing code, deduplicate
2020-05-10 23:01:26 +02:00
#define ULONG_LONG_MAX 18446744073709551615ULL
LibC: Define ULLONG_MAX Some ports require this constant to be defined as it is specified in the standard[1]. [1] https://www.cplusplus.com/reference/climits/
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#define ULLONG_MAX ULONG_LONG_MAX
LibC: Use more flexible digit parsing code, deduplicate
2020-05-10 23:01:26 +02:00
Various stubs while trying to get an old coreutils to build.
2018-11-17 15:56:09 +01:00
#define CHAR_MIN SCHAR_MIN
#define CHAR_MAX SCHAR_MAX
LibC: Make <limits.h> compatible with GCC so that it doesn't install a fixed header GCC installs a fixed version of the <limits.h> header as per https://gcc.gnu.org/onlinedocs/gcc/Fixed-Headers.html. The fixed header doesn't include the target's <limits.h> which in turn means that some definitions (such as PATH_MAX) aren't available. This change requires rebuilding the toolchain (Toolchain/BuildIt.sh). This fixes the flatbuffers port. The commit also removes some non-standard defines (U*_MIN) which don't appear to be used anywhere. By definition they're always 0 though so they're not strictly necessary.
2021-04-11 05:10:35 +02:00
#define CHAR_WIDTH 8
#define SCHAR_WIDTH 8
#define UCHAR_WIDTH 8
#define SHRT_WIDTH 16
#define USHRT_WIDTH 16
#define INT_WIDTH 32
#define UINT_WIDTH 32
#define LONG_WIDTH 32
#define ULONG_WIDTH 32
#define LLONG_WIDTH 64
#define ULLONG_WIDTH 64
Kernel: Move E2BIG calculation from Thread to Process Thread::make_userspace_stack_for_main_thread is only ever called from Process::do_exec, after all the fun ELF loading and TSS setup has occured. The calculations in there that check if the combined argv + envp size will exceed the default stack size are not used in the rest of the stack setup. So, it should be safe to move this to the beginning of do_exec and bail early with -E2BIG, just like the man pages say. Additionally, advertise this limit in limits.h to be a good POSIX.1 citizen. :)
2019-10-20 10:11:40 -06:00
#define ARG_MAX 65536
Kernel+LibPthread: pthread_create handles pthread_attr_t Add an initial implementation of pthread attributes for: * detach state (joinable, detached) * schedule params (just priority) * guard page size (as skeleton) (requires kernel support maybe?) * stack size and user-provided stack location (4 or 8 MB only, must be aligned) Add some tests too, to the thread test program. Also, LibC: Move pthread declarations to sys/types.h, where they belong.
2019-11-17 20:08:10 -07:00
#define PTHREAD_STACK_MIN 65536
LibC: Add SSIZE_MAX limit
2020-09-09 08:21:51 +01:00
#define SSIZE_MAX 2147483647
LibC: Add POSIX1 minimum limits to limits.h
2020-11-09 16:24:21 +00:00
LibC: Add LINK_MAX and _PC_LINK_MAX LINK_MAX was set arbitrarily to 4096, this is not an actual system limit.
2021-07-23 00:34:22 -06:00
#define LINK_MAX 4096
LibC: Define the POSIX TZNAME_MAX limit POSIX defines this as the "Maximum number of bytes supported for the name of a timezone (not of the TZ variable)." It must have a minimum value of _POSIX_TZNAME_MAX (6). The longest time zone name in the TZDB is about 40 chars, so 64 is chosen here for a little wiggle room, and to round up to a power of 2.
2022-01-24 07:47:49 -05:00
#define TZNAME_MAX 64
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