tests/mtime-file.c

   1 /*
   2  * Copyright (c) 2006, Stockholms Universitet
   3  * (Stockholm University, Stockholm Sweden)
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the university nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #ifdef RCSID
  39 RCSID("$Id$");
  40 #endif
  41
  42 #include <fcntl.h>
  43 #include <stdlib.h>
  44 #include <sys/stat.h>
  45 #include <time.h>
  46
  47 #include <roken.h>
  48 #include <err.h>
  49
  50 int
  51 main (int argc, char ** argv)
  52 {
  53     int fd;
  54     char *filename = "foo";
  55     char buf[] = "foo";
  56     struct stat sb;
  57     time_t mtime;
  58
  59     fd = open (filename, O_RDWR|O_CREAT|O_EXCL, 0744);
  60     if (fd < 0)
  61         errx (1, "open");
  62
  63     mtime = time(NULL);
  64     write (fd, buf, sizeof(buf));
  65     fstat (fd, &sb);
  66
  67     if (sb.st_mtime + 1 < mtime) /* give it some slack */
  68         errx (1, "mtime %u -> %u",
  69               (unsigned)mtime, (unsigned)sb.st_mtime);
  70
  71     close (fd);
  72
  73     return 0;
  74 }