1  /* fxstatat64 used on fstatat64, 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  #define __fxstatat __redirect___fxstatat
      20  #include <sys/stat.h>
      21  #undef __fxstatat
      22  #include <fcntl.h>
      23  #include <kernel_stat.h>
      24  #include <sysdep.h>
      25  #include <xstatconv.h>
      26  #include <statx_cp.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  
      33  int
      34  __fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
      35  {
      36  #if XSTAT_IS_XSTAT64
      37  # ifdef __NR_newfstatat
      38    /* 64-bit kABI, e.g. aarch64, ia64, powerpc64*, s390x, riscv64, and
      39       x86_64.  */
      40    if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX)
      41      return INLINE_SYSCALL_CALL (newfstatat, fd, file, st, flag);
      42  # elif defined __NR_fstatat64
      43    /* 64-bit kABI outlier, e.g. sparc64.  */
      44    struct stat64 st64;
      45    int r = INLINE_SYSCALL_CALL (fstatat64, fd, file, &st64, flag);
      46    return r ?: __xstat32_conv (vers, &st64, (struct stat *) st);
      47  # else
      48    /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32.  */
      49    if (vers == _STAT_VER_KERNEL)
      50      {
      51        struct statx tmp;
      52        int r = INLINE_SYSCALL_CALL (statx, fd, file, AT_NO_AUTOMOUNT | flag,
      53  				   STATX_BASIC_STATS, &tmp);
      54        if (r == 0)
      55  	__cp_stat64_statx (st, &tmp);
      56        return r;
      57      }
      58  # endif
      59  #else
      60    /* All kABIs with non-LFS support, e.g. arm, csky, i386, hppa, m68k,
      61       microblaze, mips32, nios2, sh, powerpc32, and sparc32.  */
      62    if (vers == _STAT_VER_LINUX)
      63      return INLINE_SYSCALL_CALL (fstatat64, fd, file, st, flag);
      64  #endif
      65    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
      66  }
      67  
      68  #if XSTAT_IS_XSTAT64
      69  strong_alias (__fxstatat64, __fxstatat)
      70  #endif
      71  
      72  #endif /* LIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33)  */