src/tests/utime-file.c

   1 /*
   2  * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, 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 Institute 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 INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * 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 INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include <fcntl.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42 #include <utime.h>
  43 #include <sys/stat.h>
  44 #include <sys/time.h>
  45 #include <time.h>
  46
  47 #include <err.h>
  48
  49 int
  50 main(int argc, char **argv)
  51 {
  52     int len;
  53     int ret;
  54     int fd;
  55     char *filename = "foo";
  56     char *buf;
  57     struct stat sb;
  58     struct utimbuf t;
  59
  60     switch (argc) {
  61     case 1:
  62         len = 8 * 1024;
  63         break;
  64     case 2:
  65         len = atoi(argv[1]);
  66         if (len == 0)
  67             errx(1, "invalid len");
  68     default:
  69         errx(1, "argv != [12]");
  70     }
  71
  72     buf = malloc(len);
  73     memset(buf, 'a', len);
  74
  75     fd = open(filename, O_RDWR | O_CREAT | O_EXCL, 0744);
  76     if (fd < 0)
  77         errx(1, "open");
  78     ret = fstat(fd, &sb);
  79     if (ret < 0)
  80         errx(1, "open");
  81
  82     ret = ftruncate(fd, len);
  83     fstat(fd, &sb);
  84     lseek(fd, 0, SEEK_SET);
  85     write(fd, buf, len);
  86     fstat(fd, &sb);
  87
  88     t.modtime = t.actime = time(NULL);
  89     utime(filename, &t);
  90
  91     close(fd);
  92     free(buf);
  93
  94     return 0;
  95 }