1  /* fxstatat used on fstatat, Linux implementation.
       2     Copyright (C) 2005-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <sys/stat.h>
      20  #include <fcntl.h>
      21  #include <kernel_stat.h>
      22  #include <sysdep.h>
      23  
      24  #if !XSTAT_IS_XSTAT64
      25  # include <xstatconv.h>
      26  # include <xstatover.h>
      27  # include <shlib-compat.h>
      28  
      29  # if LIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33)
      30  
      31  /* Get information about the file FD in BUF.  */
      32  int
      33  __fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
      34  {
      35  #if STAT_IS_KERNEL_STAT
      36    /* New kABIs which uses generic pre 64-bit time Linux ABI, e.g.
      37       csky, nios2  */
      38    if (vers == _STAT_VER_KERNEL)
      39      {
      40        int r = INLINE_SYSCALL_CALL (fstatat64, fd, file, st, flag);
      41        return r ?: stat_overflow (st);
      42      }
      43    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
      44  #else
      45    /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k, mips32,
      46       microblaze, s390, sh, powerpc32, and sparc32.  */
      47    struct stat64 st64;
      48    int r = INLINE_SYSCALL_CALL (fstatat64, fd, file, &st64, flag);
      49    return r ?: __xstat32_conv (vers, &st64, st);
      50  #endif
      51  }
      52  
      53  # endif /* LIB_COMPAT  */
      54  
      55  #endif /* XSTAT_IS_XSTAT64  */