tests/test-fdutimensat.c

   1 /* Tests of fdutimensat.
   2    Copyright (C) 2009-2020 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 <stdbool.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27
  28 #include "ignore-value.h"
  29 #include "macros.h"
  30
  31 #define BASE "test-fdutimensat.t"
  32
  33 #include "test-futimens.h"
  34 #include "test-lutimens.h"
  35 #include "test-utimens.h"
  36
  37 static int dfd = AT_FDCWD;
  38
  39 /* Wrap fdutimensat to behave like futimens.  */
  40 static int
  41 do_futimens (int fd, struct timespec const times[2])
  42 {
  43   return fdutimensat (fd, dfd, NULL, times, 0);
  44 }
  45
  46 /* Test the use of file descriptors alongside a name.  */
  47 static int
  48 do_fdutimens (char const *name, struct timespec const times[2])
  49 {
  50   int result;
  51   int nofollow_result;
  52   int nofollow_errno;
  53   int fd = openat (dfd, name, O_WRONLY);
  54   if (fd < 0)
  55     fd = openat (dfd, name, O_RDONLY);
  56   errno = 0;
  57   nofollow_result = fdutimensat (fd, dfd, name, times, AT_SYMLINK_NOFOLLOW);
  58   nofollow_errno = errno;
  59   result = fdutimensat (fd, dfd, name, times, 0);
  60   ASSERT (result == nofollow_result
  61           || (nofollow_result == -1 && nofollow_errno == ENOSYS));
  62   if (0 <= fd)
  63     {
  64       int saved_errno = errno;
  65       close (fd);
  66       errno = saved_errno;
  67     }
  68   return result;
  69 }
  70
  71 /* Wrap lutimensat to behave like lutimens.  */
  72 static int
  73 do_lutimens (const char *name, struct timespec const times[2])
  74 {
  75   return lutimensat (dfd, name, times);
  76 }
  77
  78 /* Wrap fdutimensat to behave like lutimens.  */
  79 static int
  80 do_lutimens1 (const char *name, struct timespec const times[2])
  81 {
  82   return fdutimensat (-1, dfd, name, times, AT_SYMLINK_NOFOLLOW);
  83 }
  84
  85 /* Wrap fdutimensat to behave like utimens.  */
  86 static int
  87 do_utimens (const char *name, struct timespec const times[2])
  88 {
  89   return fdutimensat (-1, dfd, name, times, 0);
  90 }
  91
  92 int
  93 main (void)
  94 {
  95   int result1; /* Skip because of no symlink support.  */
  96   int result2; /* Skip because of no futimens support.  */
  97   int result3; /* Skip because of no lutimens support.  */
  98   int fd;
  99
 100   /* Clean up any trash from prior testsuite runs.  */
 101   ignore_value (system ("rm -rf " BASE "*"));
 102
 103   /* Basic tests.  */
 104   result1 = test_utimens (do_utimens, true);
 105   ASSERT (test_utimens (do_fdutimens, false) == result1);
 106   result2 = test_futimens (do_futimens, result1 == 0);
 107   result3 = test_lutimens (do_lutimens, (result1 + result2) == 0);
 108   /* We expect 0/0, 0/77, or 77/77, but not 77/0.  */
 109   ASSERT (result1 <= result3);
 110   ASSERT (test_lutimens (do_lutimens1, (result1 + result2) == 0) == result3);
 111   dfd = open (".", O_RDONLY);
 112   ASSERT (0 <= dfd);
 113   ASSERT (test_utimens (do_utimens, false) == result1);
 114   ASSERT (test_utimens (do_fdutimens, false) == result1);
 115   ASSERT (test_futimens (do_futimens, false) == result2);
 116   ASSERT (test_lutimens (do_lutimens, false) == result3);
 117   ASSERT (test_lutimens (do_lutimens1, false) == result3);
 118
 119   /* Directory relative tests.  */
 120   ASSERT (mkdir (BASE "dir", 0700) == 0);
 121   ASSERT (chdir (BASE "dir") == 0);
 122   fd = creat ("file", 0600);
 123   ASSERT (0 <= fd);
 124   errno = 0;
 125   ASSERT (fdutimensat (AT_FDCWD, fd, ".", NULL, 0) == -1);
 126   ASSERT (errno == ENOTDIR);
 127   {
 128     struct timespec ts[2];
 129     struct stat 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     ASSERT (st.st_atime == Y2K);
 136     ASSERT (get_stat_atime_ns (&st) == 0);
 137     ASSERT (st.st_mtime == Y2K);
 138     ASSERT (get_stat_mtime_ns (&st) == 0);
 139   }
 140   ASSERT (close (fd) == 0);
 141   ASSERT (close (dfd) == 0);
 142   errno = 0;
 143   ASSERT (fdutimensat (-1, dfd, ".", NULL, 0) == -1);
 144   ASSERT (errno == EBADF);
 145
 146   /* Cleanup.  */
 147   ASSERT (chdir ("..") == 0);
 148   ASSERT (unlink (BASE "dir/file") == 0);
 149   ASSERT (rmdir (BASE "dir") == 0);
 150   return result1 | result2 | result3;
 151 }