tests/test-fdutimensat.c

   1 /* Tests of fdutimensat.
   2    Copyright (C) 2009-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Eric Blake <ebb9@byu.net>, 2009.  */
  18
  19 #include <config.h>
  20
  21 #include "utimens.h"
  22
  23 #include <fcntl.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "ignore-value.h"
  28 #include "macros.h"
  29
  30 #define BASE "test-fdutimensat.t"
  31
  32 #include "test-futimens.h"
  33 #include "test-lutimens.h"
  34 #include "test-utimens.h"
  35
  36 static int dfd = AT_FDCWD;
  37
  38 /* Wrap fdutimensat to behave like futimens.  */
  39 static int
  40 do_futimens (int fd, struct timespec const times[2])
  41 {
  42   return fdutimensat (fd, dfd, NULL, times, 0);
  43 }
  44
  45 /* Test the use of file descriptors alongside a name.  */
  46 static int
  47 do_fdutimens (char const *name, struct timespec const times[2])
  48 {
  49   int result;
  50   int nofollow_result;
  51   int nofollow_errno;
  52   int fd = openat (dfd, name, O_WRONLY);
  53   if (fd < 0)
  54     fd = openat (dfd, name, O_RDONLY);
  55   errno = 0;
  56   nofollow_result = fdutimensat (fd, dfd, name, times, AT_SYMLINK_NOFOLLOW);
  57   nofollow_errno = errno;
  58   result = fdutimensat (fd, dfd, name, times, 0);
  59   ASSERT (result == nofollow_result
  60           || (nofollow_result == -1 && nofollow_errno == ENOSYS));
  61   if (0 <= fd)
  62     {
  63       int saved_errno = errno;
  64       close (fd);
  65       errno = saved_errno;
  66     }
  67   return result;
  68 }
  69
  70 /* Wrap lutimensat to behave like lutimens.  */
  71 static int
  72 do_lutimens (const char *name, struct timespec const times[2])
  73 {
  74   return lutimensat (dfd, name, times);
  75 }
  76
  77 /* Wrap fdutimensat to behave like lutimens.  */
  78 static int
  79 do_lutimens1 (const char *name, struct timespec const times[2])
  80 {
  81   return fdutimensat (-1, dfd, name, times, AT_SYMLINK_NOFOLLOW);
  82 }
  83
  84 /* Wrap fdutimensat to behave like utimens.  */
  85 static int
  86 do_utimens (const char *name, struct timespec const times[2])
  87 {
  88   return fdutimensat (-1, dfd, name, times, 0);
  89 }
  90
  91 int
  92 main (void)
  93 {
  94   int result1; /* Skip because of no symlink support.  */
  95   int result2; /* Skip because of no futimens support.  */
  96   int result3; /* Skip because of no lutimens support.  */
  97   int fd;
  98
  99   /* Clean up any trash from prior testsuite runs.  */
 100   ignore_value (system ("rm -rf " BASE "*"));
 101
 102   /* Basic tests.  */
 103   result1 = test_utimens (do_utimens, true);
 104   ASSERT (test_utimens (do_fdutimens, false) == result1);
 105   result2 = test_futimens (do_futimens, result1 == 0);
 106   result3 = test_lutimens (do_lutimens, (result1 + result2) == 0);
 107   /* We expect 0/0, 0/77, or 77/77, but not 77/0.  */
 108   ASSERT (result1 <= result3);
 109   ASSERT (test_lutimens (do_lutimens1, (result1 + result2) == 0) == result3);
 110   dfd = open (".", O_RDONLY);
 111   ASSERT (0 <= dfd);
 112   ASSERT (test_utimens (do_utimens, false) == result1);
 113   ASSERT (test_utimens (do_fdutimens, false) == result1);
 114   ASSERT (test_futimens (do_futimens, false) == result2);
 115   ASSERT (test_lutimens (do_lutimens, false) == result3);
 116   ASSERT (test_lutimens (do_lutimens1, false) == result3);
 117
 118   /* Directory relative tests.  */
 119   ASSERT (mkdir (BASE "dir", 0700) == 0);
 120   ASSERT (chdir (BASE "dir") == 0);
 121   fd = open ("file", O_RDWR | O_CREAT | O_TRUNC, 0600);
 122   ASSERT (0 <= fd);
 123   errno = 0;
 124   ASSERT (fdutimensat (AT_FDCWD, fd, ".", NULL, 0) == -1);
 125   ASSERT (errno == ENOTDIR);
 126   {
 127     struct timespec ts[2];
 128     struct stat st;
 129     bool check_atime = checkable_atime (fd, &st);
 130     ts[0].tv_sec = Y2K;
 131     ts[0].tv_nsec = 0;
 132     ts[1] = ts[0];
 133     ASSERT (fdutimensat (fd, dfd, BASE "dir/file", ts, 0) == 0);
 134     ASSERT (stat ("file", &st) == 0);
 135     if (check_atime)
 136       {
 137         ASSERT (st.st_atime == Y2K);
 138         ASSERT (get_stat_atime_ns (&st) == 0);
 139       }
 140     ASSERT (st.st_mtime == Y2K);
 141     ASSERT (get_stat_mtime_ns (&st) == 0);
 142   }
 143   ASSERT (close (fd) == 0);
 144   ASSERT (close (dfd) == 0);
 145   errno = 0;
 146   ASSERT (fdutimensat (-1, dfd, ".", NULL, 0) == -1);
 147   ASSERT (errno == EBADF);
 148
 149   /* Cleanup.  */
 150   ASSERT (chdir ("..") == 0);
 151   ASSERT (unlink (BASE "dir/file") == 0);
 152   ASSERT (rmdir (BASE "dir") == 0);
 153   int result = result1 | result2 | result3;
 154   return (result ? result : test_exit_status);
 155 }