1/* lxstat64 using Linux lstat64 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 __lxstat __redirect___lxstat
20#include <sys/stat.h>
21#undef __lxstat
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_1, GLIBC_2_33)
30
31/* Get information about the file NAME in BUF. */
32
33int
34___lxstat64 (int vers, const char *name, struct stat64 *buf)
35{
36#if XSTAT_IS_XSTAT64
37# ifdef __NR_lstat64
38 /* 64-bit kABI outlier, e.g. sparc64. */
39 if (vers == _STAT_VER_KERNEL)
40 return INLINE_SYSCALL_CALL (lstat, name, buf);
41 else
42 {
43 struct stat64 st64;
44 int r = INLINE_SYSCALL_CALL (lstat64, name, &st64);
45 return r ?: __xstat32_conv (vers, &st64, (struct stat *) buf);
46 }
47# elif defined __NR_lstat
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 (lstat, 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,
55 AT_SYMLINK_NOFOLLOW);
56# else
57 /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32. */
58 if (vers == _STAT_VER_KERNEL)
59 {
60 struct statx tmp;
61 int r = INLINE_SYSCALL_CALL (statx, AT_FDCWD, name,
62 AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW,
63 STATX_BASIC_STATS, &tmp);
64 if (r == 0)
65 __cp_stat64_statx (buf, &tmp);
66 return r;
67 }
68# endif
69#else
70# if STAT_IS_KERNEL_STAT
71 /* New kABIs which uses generic pre 64-bit time Linux ABI,
72 e.g. csky, nios2 */
73 if (vers == _STAT_VER_KERNEL)
74 return INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf,
75 AT_SYMLINK_NOFOLLOW);
76# else
77 /* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k,
78 microblaze, s390, sh, mips32, powerpc32, and sparc32. */
79 return INLINE_SYSCALL_CALL (lstat64, name, buf);
80# endif /* STAT_IS_KERNEL_STAT */
81#endif /* XSTAT_IS_XSTAT64 */
82
83 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
84}
85
86#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
87versioned_symbol (libc, ___lxstat64, __lxstat64, GLIBC_2_2);
88strong_alias (___lxstat64, __old__lxstat64)
89compat_symbol (libc, __old__lxstat64, __lxstat64, GLIBC_2_1);
90#else
91strong_alias (___lxstat64, __lxstat64);
92#endif
93
94#if XSTAT_IS_XSTAT64
95strong_alias (___lxstat64,__lxstat)
96#endif
97
98#endif /* LIB_COMPAT */
99