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
33int
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
69strong_alias (__fxstatat64, __fxstatat)
70#endif
71
72#endif /* LIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33) */
73