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/* fxstat using old-style Unix fstat system call.
Copyright (C) 1991,1995-1998,2000,2002,2003,2006
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 __fxstat64 __fxstat64_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 FD in BUF. */
int
__fxstat (int vers, int fd, struct stat *buf)
{
#if __ASSUME_STAT64_SYSCALL == 0
struct kernel_stat kbuf;
#endif
int result;
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (fstat, 2, fd, CHECK_1 ((struct kernel_stat *) buf));
#if __ASSUME_STAT64_SYSCALL > 0
{
struct stat64 buf64;
result = INLINE_SYSCALL (fstat64, 2, fd, __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 (fstat64, 2, fd, __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 (fstat, 2, fd, __ptrvalue (&kbuf));
if (result == 0)
result = __xstat_conv (vers, &kbuf, buf);
return result;
#endif /* __ASSUME_STAT64_SYSCALL */
}
hidden_def (__fxstat)
weak_alias (__fxstat, _fxstat);
#ifdef XSTAT_IS_XSTAT64
#undef __fxstat64
strong_alias (__fxstat, __fxstat64);
hidden_ver (__fxstat, __fxstat64)
#endif
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