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[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / lxstat.c

/* lxstat using old-style Unix lstat system call.
   Copyright (C) 1991-2019 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, see
   <https://www.gnu.org/licenses/>.  */

/* 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 <xstatconv.h>

/* Get information about the file NAME in BUF.  */
int
__lxstat (int vers, const char *name, struct stat *buf)
{
  if (vers == _STAT_VER_KERNEL)
    return INLINE_SYSCALL (lstat, 2, name, buf);

#ifdef STAT_IS_KERNEL_STAT
  return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
#else
  struct kernel_stat kbuf;
  int result;

  result = INLINE_SYSCALL (lstat, 2, name, &kbuf);
  if (result == 0)
    result = __xstat_conv (vers, &kbuf, buf);

  return result;
#endif
}

hidden_def (__lxstat)
weak_alias (__lxstat, _lxstat);
#if XSTAT_IS_XSTAT64
#undef __lxstat64
strong_alias (__lxstat, __lxstat64);
hidden_ver (__lxstat, __lxstat64)
#endif