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git.ipfire.org Git - thirdparty/glibc.git/blob - support/support_path_support_time64.c
1 /* Check if path supports 64-bit time interfaces.
2 Copyright (C) 2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
20 #include <support/check.h>
21 #include <support/support.h>
29 utimesat_call (const char *path
, const struct __timespec64 tsp
[2])
31 # ifndef __NR_utimensat_time64
32 # define __NR_utimensat_time64 __NR_utimensat
34 return INLINE_SYSCALL_CALL (utimensat_time64
, AT_FDCWD
, path
, &tsp
[0], 0);
39 support_path_support_time64 (const char *path
)
42 /* Obtain the original timestamps to restore at the end. */
44 TEST_VERIFY_EXIT (statx (AT_FDCWD
, path
, 0, STATX_BASIC_STATS
, &ostx
) == 0);
46 const struct __timespec64 tsp
[] =
48 /* 1s and 2s after y2038 limit. */
52 /* Return is kernel does not support __NR_utimensat_time64. */
53 if (utimesat_call (path
, tsp
) == -1)
56 /* Verify if the last access and last modification time match the ones
57 obtained with statx. */
59 TEST_VERIFY_EXIT (statx (AT_FDCWD
, path
, 0, STATX_BASIC_STATS
, &stx
) == 0);
61 bool support
= stx
.stx_atime
.tv_sec
== tsp
[0].tv_sec
62 && stx
.stx_mtime
.tv_sec
== tsp
[1].tv_sec
;
64 /* Reset to original timestamps. */
65 const struct __timespec64 otsp
[] =
67 { ostx
.stx_atime
.tv_sec
, ostx
.stx_atime
.tv_nsec
},
68 { ostx
.stx_mtime
.tv_sec
, ostx
.stx_mtime
.tv_nsec
},
70 TEST_VERIFY_EXIT (utimesat_call (path
, otsp
) == 0);