| /* Test of file timestamp modification functions. |
| Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #include "test-utimens-common.h" |
| |
| /* This file is designed to test both utimens(a,b) and |
| utimensat(AT_FDCWD,a,b,0). FUNC is the function to test. Assumes |
| that BASE and ASSERT are already defined. If PRINT, warn before |
| skipping tests with status 77. */ |
| static int |
| test_utimens (int (*func) (char const *, struct timespec const *), bool print) |
| { |
| struct stat st1; |
| struct stat st2; |
| |
| ASSERT (close (creat (BASE "file", 0600)) == 0); |
| /* If utimens truncates to worse resolution than the file system |
| supports, then time can appear to go backwards between now and a |
| follow-up utimens with UTIME_NOW or a NULL timespec. Use |
| UTIMECMP_TRUNCATE_SOURCE to compensate, with st1 as the |
| source. */ |
| ASSERT (stat (BASE "file", &st1) == 0); |
| nap (); |
| ASSERT (func (BASE "file", NULL) == 0); |
| ASSERT (stat (BASE "file", &st2) == 0); |
| ASSERT (0 <= utimecmp (BASE "file", &st2, &st1, UTIMECMP_TRUNCATE_SOURCE)); |
| if (check_ctime) |
| ASSERT (ctime_compare (&st1, &st2) < 0); |
| { |
| /* On some NFS systems, the 'now' timestamp of creat or a NULL |
| timespec is determined by the server, but the 'now' timestamp |
| determined by gettime() (as is done when using UTIME_NOW) is |
| determined by the client; since the two machines are not |
| necessarily on the same clock, this is another case where time |
| can appear to go backwards. The rest of this test cares about |
| client time, so manually use gettime() to set both times. */ |
| struct timespec ts[2]; |
| gettime (&ts[0]); |
| ts[1] = ts[0]; |
| ASSERT (func (BASE "file", ts) == 0); |
| ASSERT (stat (BASE "file", &st1) == 0); |
| nap (); |
| } |
| |
| /* Invalid arguments. */ |
| errno = 0; |
| ASSERT (func ("no_such", NULL) == -1); |
| ASSERT (errno == ENOENT); |
| errno = 0; |
| ASSERT (func ("no_such/", NULL) == -1); |
| ASSERT (errno == ENOENT || errno == ENOTDIR); |
| errno = 0; |
| ASSERT (func ("", NULL) == -1); |
| ASSERT (errno == ENOENT); |
| { |
| struct timespec ts[2]; |
| ts[0].tv_sec = Y2K; |
| ts[0].tv_nsec = UTIME_BOGUS_POS; |
| ts[1].tv_sec = Y2K; |
| ts[1].tv_nsec = 0; |
| errno = 0; |
| ASSERT (func (BASE "file", ts) == -1); |
| ASSERT (errno == EINVAL); |
| } |
| { |
| struct timespec ts[2]; |
| ts[0].tv_sec = Y2K; |
| ts[0].tv_nsec = 0; |
| ts[1].tv_sec = Y2K; |
| ts[1].tv_nsec = UTIME_BOGUS_NEG; |
| errno = 0; |
| ASSERT (func (BASE "file", ts) == -1); |
| ASSERT (errno == EINVAL); |
| } |
| { |
| struct timespec ts[2]; |
| ts[0].tv_sec = Y2K; |
| ts[0].tv_nsec = 0; |
| ts[1] = ts[0]; |
| errno = 0; |
| ASSERT (func (BASE "file/", ts) == -1); |
| ASSERT (errno == ENOTDIR || errno == EINVAL); |
| } |
| ASSERT (stat (BASE "file", &st2) == 0); |
| ASSERT (st1.st_atime == st2.st_atime); |
| ASSERT (get_stat_atime_ns (&st1) == get_stat_atime_ns (&st2)); |
| ASSERT (utimecmp (BASE "file", &st1, &st2, 0) == 0); |
| |
| /* Set both times. */ |
| { |
| struct timespec ts[2]; |
| ts[0].tv_sec = Y2K; |
| ts[0].tv_nsec = BILLION / 2 - 1; |
| ts[1].tv_sec = Y2K; |
| ts[1].tv_nsec = BILLION - 1; |
| ASSERT (func (BASE "file", ts) == 0); |
| ASSERT (stat (BASE "file", &st2) == 0); |
| ASSERT (st2.st_atime == Y2K); |
| ASSERT (0 <= get_stat_atime_ns (&st2)); |
| ASSERT (get_stat_atime_ns (&st2) < BILLION / 2); |
| ASSERT (st2.st_mtime == Y2K); |
| ASSERT (0 <= get_stat_mtime_ns (&st2)); |
| ASSERT (get_stat_mtime_ns (&st2) < BILLION); |
| if (check_ctime) |
| ASSERT (ctime_compare (&st1, &st2) < 0); |
| } |
| |
| /* Play with UTIME_OMIT, UTIME_NOW. */ |
| { |
| struct stat st3; |
| struct timespec ts[2]; |
| ts[0].tv_sec = BILLION; |
| ts[0].tv_nsec = UTIME_OMIT; |
| ts[1].tv_sec = 0; |
| ts[1].tv_nsec = UTIME_NOW; |
| nap (); |
| ASSERT (func (BASE "file", ts) == 0); |
| ASSERT (stat (BASE "file", &st3) == 0); |
| ASSERT (st3.st_atime == Y2K); |
| ASSERT (0 <= get_stat_atime_ns (&st3)); |
| ASSERT (get_stat_atime_ns (&st3) < BILLION / 2); |
| /* See comment above about this utimecmp call. */ |
| ASSERT (0 <= utimecmp (BASE "file", &st3, &st1, UTIMECMP_TRUNCATE_SOURCE)); |
| if (check_ctime) |
| ASSERT (ctime_compare (&st2, &st3) < 0); |
| nap (); |
| ts[0].tv_nsec = 0; |
| ts[1].tv_nsec = UTIME_OMIT; |
| ASSERT (func (BASE "file", ts) == 0); |
| ASSERT (stat (BASE "file", &st2) == 0); |
| ASSERT (st2.st_atime == BILLION); |
| ASSERT (get_stat_atime_ns (&st2) == 0); |
| ASSERT (st3.st_mtime == st2.st_mtime); |
| ASSERT (get_stat_mtime_ns (&st3) == get_stat_mtime_ns (&st2)); |
| if (check_ctime) |
| ASSERT (ctime_compare (&st3, &st2) < 0); |
| } |
| |
| /* Make sure this dereferences symlinks. */ |
| if (symlink (BASE "file", BASE "link")) |
| { |
| ASSERT (unlink (BASE "file") == 0); |
| if (print) |
| fputs ("skipping test: symlinks not supported on this file system\n", |
| stderr); |
| return 77; |
| } |
| ASSERT (lstat (BASE "link", &st1) == 0); |
| ASSERT (st1.st_mtime != Y2K); |
| errno = 0; |
| ASSERT (func (BASE "link/", NULL) == -1); |
| ASSERT (errno == ENOTDIR); |
| { |
| struct timespec ts[2]; |
| ts[0].tv_sec = Y2K; |
| ts[0].tv_nsec = 0; |
| ts[1] = ts[0]; |
| ASSERT (func (BASE "link", ts) == 0); |
| ASSERT (lstat (BASE "link", &st2) == 0); |
| /* Can't compare atimes, since lstat() changes symlink atime on cygwin. */ |
| ASSERT (st1.st_mtime == st2.st_mtime); |
| ASSERT (stat (BASE "link", &st2) == 0); |
| ASSERT (st2.st_mtime == Y2K); |
| ASSERT (get_stat_mtime_ns (&st2) == 0); |
| } |
| |
| /* Cleanup. */ |
| ASSERT (unlink (BASE "link") == 0); |
| ASSERT (unlink (BASE "file") == 0); |
| return 0; |
| } |