mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* lxstat using old-style Unix lstat system call.
|
|
Copyright (C) 1991, 1995, 1996, 1997, 1998, 2000, 2002, 2003
|
|
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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
/* Ho hum, if xstat == xstat64 we must get rid of the prototype or gcc
|
|
will complain since they don't strictly match. */
|
|
#define __lxstat64 __lxstat64_disable
|
|
|
|
#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"
|
|
|
|
#include <xstatconv.h>
|
|
|
|
#ifdef __NR_stat64
|
|
# 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. */
|
|
int
|
|
__lxstat (int vers, const char *name, struct stat *buf)
|
|
{
|
|
#if __ASSUME_STAT64_SYSCALL == 0
|
|
struct kernel_stat kbuf;
|
|
#endif
|
|
int result;
|
|
|
|
if (vers == _STAT_VER_KERNEL)
|
|
return INLINE_SYSCALL (lstat, 2, CHECK_STRING (name), CHECK_1 ((struct kernel_stat *) buf));
|
|
|
|
#if __ASSUME_STAT64_SYSCALL > 0
|
|
{
|
|
struct stat64 buf64;
|
|
|
|
result = INLINE_SYSCALL (lstat64, 2, CHECK_STRING (name), __ptrvalue (&buf64));
|
|
if (result == 0)
|
|
result = __xstat32_conv (vers, &buf64, buf);
|
|
return result;
|
|
}
|
|
#else
|
|
|
|
# if defined __NR_stat64
|
|
/* To support 32 bit UIDs, we have to use stat64. The normal stat call only returns
|
|
16 bit UIDs. */
|
|
if (! __have_no_stat64)
|
|
{
|
|
struct stat64 buf64;
|
|
result = INLINE_SYSCALL (lstat64, 2, CHECK_STRING (name), __ptrvalue (&buf64));
|
|
|
|
if (result == 0)
|
|
result = __xstat32_conv (vers, &buf64, buf);
|
|
|
|
if (result != -1 || errno != ENOSYS)
|
|
return result;
|
|
|
|
__have_no_stat64 = 1;
|
|
}
|
|
# endif
|
|
|
|
result = INLINE_SYSCALL (lstat, 2, CHECK_STRING (name), __ptrvalue (&kbuf));
|
|
if (result == 0)
|
|
result = __xstat_conv (vers, &kbuf, buf);
|
|
|
|
return result;
|
|
#endif
|
|
}
|
|
|
|
hidden_def (__lxstat)
|
|
weak_alias (__lxstat, _lxstat);
|
|
#ifdef XSTAT_IS_XSTAT64
|
|
#undef __lxstat64
|
|
strong_alias (__lxstat, __lxstat64);
|
|
hidden_ver (__lxstat, __lxstat64)
|
|
#endif
|