1  /* xstat64 using Linux stat64 system call.
       2     Copyright (C) 1991-2023 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 __xstat __redirect___xstat
      20  #include <sys/stat.h>
      21  #undef __xstat
      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_0, GLIBC_2_33)
      30  
      31  /* Get information about the file NAME in BUF.  */
      32  
      33  int
      34  ___xstat64 (int vers, const char *name, struct stat64 *buf)
      35  {
      36  #if XSTAT_IS_XSTAT64
      37  # ifdef __NR_stat64
      38    /* 64-bit kABI outlier, e.g. sparc64.  */
      39    if (vers == _STAT_VER_KERNEL)
      40      return INLINE_SYSCALL_CALL (stat, name, buf);
      41    else
      42      {
      43        struct stat64 st64;
      44        int r = INLINE_SYSCALL_CALL (stat64, name, &st64);
      45        return r ?: __xstat32_conv (vers, &st64, (struct stat *) buf);
      46      }
      47  # elif defined __NR_stat
      48    /* Old 64-bit kABI, e.g. ia64, powerpc64*, s390x, and x86_64.  */
      49    if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX)
      50      return INLINE_SYSCALL_CALL (stat, name, buf);
      51  # elif defined __NR_newfstatat
      52    /* New kABIs which uses generic 64-bit Linux ABI, e.g. aarch64, riscv64.  */
      53    if (vers == _STAT_VER_KERNEL)
      54      return INLINE_SYSCALL_CALL (newfstatat, AT_FDCWD, name, buf, 0);
      55  # else
      56    /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32.  */
      57    if (vers == _STAT_VER_KERNEL)
      58      {
      59        struct statx tmp;
      60        int r = INLINE_SYSCALL_CALL (statx, AT_FDCWD, name, AT_NO_AUTOMOUNT,
      61  				   STATX_BASIC_STATS, &tmp);
      62        if (r == 0)
      63  	__cp_stat64_statx (buf, &tmp);
      64        return r;
      65       }
      66  # endif
      67  #else
      68  # if STAT_IS_KERNEL_STAT
      69    /* New kABIs which uses generic pre 64-bit time Linux ABI,
      70       e.g. csky, nios2  */
      71    if (vers == _STAT_VER_KERNEL)
      72      return INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf, 0);
      73  # else
      74    /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k,
      75       microblaze, s390, sh, mips32, powerpc32, and sparc32.  */
      76    return INLINE_SYSCALL_CALL (stat64, name, buf);
      77  # endif /* STAT_IS_KERNEL_STAT  */
      78  #endif /* XSTAT_IS_XSTAT64  */
      79  
      80    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
      81  }
      82  
      83  #if XSTAT_IS_XSTAT64
      84  strong_alias (___xstat64, __xstat)
      85  #endif
      86  
      87  #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
      88  versioned_symbol (libc, ___xstat64, __xstat64, GLIBC_2_2);
      89  strong_alias (___xstat64, __old__xstat64)
      90  compat_symbol (libc, __old__xstat64, __xstat64, GLIBC_2_1);
      91  #else
      92  strong_alias (___xstat64, __xstat64)
      93  #endif
      94  
      95  
      96  #endif /* LIB_COMPAT  */