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syscall: use error

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- syscall (not os) now defines the Errno type.
- the low-level assembly functions Syscall, Syscall6, and so on
  return Errno, not uintptr
- syscall wrappers all return error, not uintptr.

R=golang-dev, mikioh.mikioh, r, alex.brainman
CC=golang-dev
https://golang.org/cl/5372080
This commit is contained in:
Russ Cox 2011-11-13 22:44:52 -05:00
parent b126902e84
commit c017a8299f
102 changed files with 7429 additions and 5975 deletions
Download patch file Download diff file Expand all files Collapse all files

88
src/pkg/syscall/syscall_linux_arm.go
View file

@ -25,7 +25,7 @@ func NsecToTimeval(nsec int64) (tv Timeval) {
// Pread and Pwrite are special: they insert padding before the int64.
func Pread(fd int, p []byte, offset int64) (n int, errno int) {
func Pread(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
@ -36,7 +36,7 @@ func Pread(fd int, p []byte, offset int64) (n int, errno int) {
return
}
func Pwrite(fd int, p []byte, offset int64) (n int, errno int) {
func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
@ -47,7 +47,7 @@ func Pwrite(fd int, p []byte, offset int64) (n int, errno int) {
return
}
func Ftruncate(fd int, length int64) (errno int) {
func Ftruncate(fd int, length int64) (err error) {
// ARM EABI requires 64-bit arguments should be put in a pair
// of registers from an even register number.
_, _, e1 := Syscall6(SYS_FTRUNCATE64, uintptr(fd), 0, uintptr(length), uintptr(length>>32), 0, 0)
@ -55,7 +55,7 @@ func Ftruncate(fd int, length int64) (errno int) {
return
}
func Truncate(path string, length int64) (errno int) {
func Truncate(path string, length int64) (err error) {
_, _, e1 := Syscall6(SYS_TRUNCATE64, uintptr(unsafe.Pointer(StringBytePtr(path))), 0, uintptr(length), uintptr(length>>32), 0, 0)
errno = int(e1)
return
@ -63,56 +63,56 @@ func Truncate(path string, length int64) (errno int) {
// Seek is defined in assembly.
func Seek(fd int, offset int64, whence int) (newoffset int64, errno int)
func Seek(fd int, offset int64, whence int) (newoffset int64, err error)
//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int)
//sys bind(s int, addr uintptr, addrlen _Socklen) (errno int)
//sys connect(s int, addr uintptr, addrlen _Socklen) (errno int)
//sysnb getgroups(n int, list *_Gid_t) (nn int, errno int) = SYS_GETGROUPS32
//sysnb setgroups(n int, list *_Gid_t) (errno int) = SYS_SETGROUPS32
//sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (errno int)
//sys setsockopt(s int, level int, name int, val uintptr, vallen uintptr) (errno int)
//sysnb socket(domain int, typ int, proto int) (fd int, errno int)
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int)
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int)
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, errno int)
//sys sendto(s int, buf []byte, flags int, to uintptr, addrlen _Socklen) (errno int)
//sysnb socketpair(domain int, typ int, flags int, fd *[2]int) (errno int)
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, errno int)
//sys sendmsg(s int, msg *Msghdr, flags int) (errno int)
//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
//sys bind(s int, addr uintptr, addrlen _Socklen) (err error)
//sys connect(s int, addr uintptr, addrlen _Socklen) (err error)
//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
//sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error)
//sys setsockopt(s int, level int, name int, val uintptr, vallen uintptr) (err error)
//sysnb socket(domain int, typ int, proto int) (fd int, err error)
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
//sys sendto(s int, buf []byte, flags int, to uintptr, addrlen _Socklen) (err error)
//sysnb socketpair(domain int, typ int, flags int, fd *[2]int) (err error)
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
//sys sendmsg(s int, msg *Msghdr, flags int) (err error)
//sys Chown(path string, uid int, gid int) (errno int)
//sys Fchown(fd int, uid int, gid int) (errno int)
//sys Fstat(fd int, stat *Stat_t) (errno int) = SYS_FSTAT64
//sys Fstatfs(fd int, buf *Statfs_t) (errno int) = SYS_FSTATFS64
//sys Chown(path string, uid int, gid int) (err error)
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
//sys Fstatfs(fd int, buf *Statfs_t) (err error) = SYS_FSTATFS64
//sysnb Getegid() (egid int)
//sysnb Geteuid() (euid int)
//sysnb Getgid() (gid int)
//sysnb Getuid() (uid int)
//sys Lchown(path string, uid int, gid int) (errno int)
//sys Listen(s int, n int) (errno int)
//sys Lstat(path string, stat *Stat_t) (errno int) = SYS_LSTAT64
//sys Sendfile(outfd int, infd int, offset *int64, count int) (written int, errno int) = SYS_SENDFILE64
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, errno int) = SYS__NEWSELECT
//sys Setfsgid(gid int) (errno int)
//sys Setfsuid(uid int) (errno int)
//sysnb Setgid(gid int) (errno int)
//sysnb Setregid(rgid int, egid int) (errno int)
//sysnb Setresgid(rgid int, egid int, sgid int) (errno int)
//sysnb Setresuid(ruid int, euid int, suid int) (errno int)
//sysnb Setreuid(ruid int, euid int) (errno int)
//sys Shutdown(fd int, how int) (errno int)
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, errno int)
//sys Stat(path string, stat *Stat_t) (errno int) = SYS_STAT64
//sys Statfs(path string, buf *Statfs_t) (errno int) = SYS_STATFS64
//sys Lchown(path string, uid int, gid int) (err error)
//sys Listen(s int, n int) (err error)
//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
//sys Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
//sys Setfsgid(gid int) (err error)
//sys Setfsuid(uid int) (err error)
//sysnb Setgid(gid int) (err error)
//sysnb Setregid(rgid int, egid int) (err error)
//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
//sysnb Setresuid(ruid int, euid int, suid int) (err error)
//sysnb Setreuid(ruid int, euid int) (err error)
//sys Shutdown(fd int, how int) (err error)
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
//sys Statfs(path string, buf *Statfs_t) (err error) = SYS_STATFS64
// Vsyscalls on amd64.
//sysnb Gettimeofday(tv *Timeval) (errno int)
//sysnb Time(t *Time_t) (tt Time_t, errno int)
//sysnb Gettimeofday(tv *Timeval) (err error)
//sysnb Time(t *Time_t) (tt Time_t, err error)
//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, errno int)
//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, errno int) {
func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
page := uintptr(offset / 4096)
if offset != int64(page)*4096 {
return 0, EINVAL