external/bsd/libarchive/dist/cpio/test/test_option_a.c

   1 /*-
   2  * Copyright (c) 2003-2008 Tim Kientzle
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25 #include "test.h"
  26 #include <utime.h>
  27 __FBSDID("$FreeBSD$");
  28
  29 static struct {
  30         const char *name;
  31         time_t atime_sec;
  32 } files[] = {
  33         { "f0", 0 },
  34         { "f1", 0 },
  35         { "f2", 0 },
  36         { "f3", 0 },
  37         { "f4", 0 },
  38         { "f5", 0 }
  39 };
  40
  41 /*
  42  * Create a bunch of test files and record their atimes.
  43  * For the atime preserve/change tests, the files must have
  44  * atimes in the past.  We can accomplish this by explicitly invoking
  45  * utime() on platforms that support it or by simply sleeping
  46  * for a second after creating the files.  (Creating all of the files
  47  * at once means we only need to sleep once.)
  48  */
  49 static void
  50 test_create(void)
  51 {
  52         struct stat st;
  53         struct utimbuf times;
  54         static const int numfiles = sizeof(files) / sizeof(files[0]);
  55         int i;
  56         int fd;
  57
  58         for (i = 0; i < numfiles; ++i) {
  59                 fd = open(files[i].name, O_CREAT | O_WRONLY, 0644);
  60                 assert(fd >= 0);
  61                 /*
  62                  * Note: Have to write at least one byte to the file.
  63                  * cpio doesn't bother reading the file if it's zero length,
  64                  * so the atime never gets changed in that case, which
  65                  * makes the tests below rather pointless.
  66                  */
  67                 assertEqualInt(1, write(fd, "a", 1));
  68                 close(fd);
  69
  70                 /* If utime() isn't supported on your platform, just
  71                  * #ifdef this section out.  Most of the test below is
  72                  * still valid. */
  73                 memset(&times, 0, sizeof(times));
  74                 times.actime = 1;
  75                 times.modtime = 3;
  76                 assertEqualInt(0, utime(files[i].name, &times));
  77
  78                 /* Record whatever atime the file ended up with. */
  79                 /* If utime() is available, this should be 1, but there's
  80                  * no harm in being careful. */
  81                 assertEqualInt(0, stat(files[i].name, &st));
  82                 files[i].atime_sec = st.st_atime;
  83         }
  84
  85         /* Wait until the atime on the last file is actually in the past. */
  86         /* If utime() is supported above, there's no sleep here which
  87          * makes the test faster. */
  88         while (files[numfiles - 1].atime_sec >= time(NULL))
  89                 sleep(1);
  90 }
  91
  92 DEFINE_TEST(test_option_a)
  93 {
  94         struct stat st;
  95         int r;
  96         int f;
  97         char buff[64];
  98
  99         /* Create all of the test files. */
 100         test_create();
 101
 102         /* Sanity check; verify that atimes really do get modified. */
 103         f = open(files[0].name, O_RDONLY);
 104         assertEqualInt(1, read(f,buff, 1));
 105         assertEqualInt(0, close(f));
 106         assertEqualInt(0, stat("f0", &st));
 107         if (st.st_atime == files[0].atime_sec) {
 108                 skipping("Cannot verify -a option\n"
 109                     "      Your system appears to not support atime.");
 110         }
 111         else
 112         {
 113                 /*
 114                  * If this disk is mounted noatime, then we can't
 115                  * verify correct operation without -a.
 116                  */
 117
 118                 /* Copy the file without -a; should change the atime. */
 119                 r = systemf("echo %s | %s -pd copy-no-a > copy-no-a.out 2>copy-no-a.err", files[1].name, testprog);
 120                 assertEqualInt(r, 0);
 121                 assertEmptyFile("copy-no-a.err");
 122                 assertEmptyFile("copy-no-a.out");
 123                 assertEqualInt(0, stat(files[1].name, &st));
 124                 failure("Copying file without -a should have changed atime.");
 125                 assert(st.st_atime != files[1].atime_sec);
 126
 127                 /* Archive the file without -a; should change the atime. */
 128                 r = systemf("echo %s | %s -o > archive-no-a.out 2>archive-no-a.err", files[2].name, testprog);
 129                 assertEqualInt(r, 0);
 130                 assertEmptyFile("copy-no-a.err");
 131                 assertEqualInt(0, stat(files[2].name, &st));
 132                 failure("Archiving file without -a should have changed atime.");
 133                 assert(st.st_atime != files[2].atime_sec);
 134         }
 135
 136         /*
 137          * We can, of course, still verify that the atime is unchanged
 138          * when using the -a option.
 139          */
 140
 141         /* Copy the file with -a; should not change the atime. */
 142         r = systemf("echo %s | %s -pad copy-a > copy-a.out 2>copy-a.err",
 143             files[3].name, testprog);
 144         assertEqualInt(r, 0);
 145         assertEmptyFile("copy-a.err");
 146         assertEmptyFile("copy-a.out");
 147         assertEqualInt(0, stat(files[3].name, &st));
 148         failure("Copying file with -a should not have changed atime.");
 149         assertEqualInt(st.st_atime, files[3].atime_sec);
 150
 151         /* Archive the file with -a; should not change the atime. */
 152         r = systemf("echo %s | %s -oa > archive-a.out 2>archive-a.err",
 153             files[4].name, testprog);
 154         assertEqualInt(r, 0);
 155         assertEmptyFile("copy-a.err");
 156         assertEqualInt(0, stat(files[4].name, &st));
 157         failure("Archiving file with -a should not have changed atime.");
 158         assertEqualInt(st.st_atime, files[4].atime_sec);
 159 }