mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-01 09:20:19 +00:00
5287b1d872
* sysdeps/unix/sysv/linux/fxstat64.c: Add one __builtin_expect. * sysdeps/unix/sysv/linux/lxstat64.c: Likewise. * sysdeps/unix/sysv/linux/xstat64.c: Likewise.
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/* lxstat64 using old-style Unix lstat system call.
|
|
Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <errno.h>
|
|
#include <stddef.h>
|
|
#include <sys/stat.h>
|
|
#include <kernel_stat.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include <bp-checks.h>
|
|
|
|
#include "kernel-features.h"
|
|
|
|
#if __ASSUME_STAT64_SYSCALL == 0
|
|
# include <xstatconv.c>
|
|
#endif
|
|
|
|
extern int __syscall_lstat (const char *__unbounded,
|
|
struct kernel_stat *__unbounded);
|
|
|
|
#ifdef __NR_lstat64
|
|
extern int __syscall_lstat64 (const char *__unbounded,
|
|
struct stat64 *__unbounded);
|
|
# if __ASSUME_STAT64_SYSCALL == 0
|
|
/* The variable is shared between all wrappers around *stat64 calls. */
|
|
extern int __have_no_stat64;
|
|
# endif
|
|
#endif
|
|
|
|
/* Get information about the file NAME in BUF. */
|
|
extern int ___lxstat64 (int vers, const char *name, struct stat64 *buf);
|
|
|
|
int
|
|
___lxstat64 (int vers, const char *name, struct stat64 *buf)
|
|
{
|
|
int result;
|
|
#ifdef __ASSUME_STAT64_SYSCALL
|
|
result = INLINE_SYSCALL (lstat64, 2, CHECK_STRING (name), CHECK_1 (buf));
|
|
# if defined _HAVE_STAT64___ST_INO && __ASSUME_ST_INO_64_BIT == 0
|
|
if (__builtin_expect (!result, 1) && buf->__st_ino != (__ino_t) buf->st_ino)
|
|
buf->st_ino = buf->__st_ino;
|
|
# endif
|
|
return result;
|
|
#else
|
|
struct kernel_stat kbuf;
|
|
# ifdef __NR_lstat64
|
|
if (! __have_no_stat64)
|
|
{
|
|
int saved_errno = errno;
|
|
result = INLINE_SYSCALL (lstat64, 2, CHECK_STRING (name), CHECK_1 (buf));
|
|
|
|
if (result != -1 || errno != ENOSYS)
|
|
{
|
|
# if defined _HAVE_STAT64___ST_INO && __ASSUME_ST_INO_64_BIT == 0
|
|
if (!result && buf->__st_ino != (__ino_t) buf->st_ino)
|
|
buf->st_ino = buf->__st_ino;
|
|
# endif
|
|
return result;
|
|
}
|
|
|
|
__set_errno (saved_errno);
|
|
__have_no_stat64 = 1;
|
|
}
|
|
# endif
|
|
result = INLINE_SYSCALL (lstat, 2, CHECK_STRING (name), __ptrvalue (&kbuf));
|
|
if (result == 0)
|
|
result = xstat64_conv (vers, &kbuf, buf);
|
|
|
|
return result;
|
|
#endif
|
|
}
|
|
|
|
#include <shlib-compat.h>
|
|
|
|
versioned_symbol (libc, ___lxstat64, __lxstat64, GLIBC_2_2);
|
|
|
|
#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
|
|
strong_alias (___lxstat64, __old__lxstat64)
|
|
compat_symbol (libc, __old__lxstat64, __lxstat64, GLIBC_2_1);
|
|
#endif
|