src/tests/write-ucc.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 <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <errno.h>
  42
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45 #include <sys/time.h>
  46 #include <fcntl.h>
  47 #include <unistd.h>
  48 #include <err.h>
  49
  50 static void
  51 doit(const char *filename)
  52 {
  53     int fd;
  54     int ret;
  55     struct timeval tv[2];
  56     struct stat sb;
  57
  58     fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
  59     if (fd < 0)
  60         err(1, "open %s", filename);
  61     ret = write(fd, "hej\n", 4);
  62     if (ret < 0)
  63         err(1, "write %s", filename);
  64     if (ret != 4)
  65         errx(1, "short write to %s", filename);
  66     gettimeofday(&tv[0], NULL);
  67     tv[1] = tv[0];
  68     ret = utimes(filename, tv);
  69     if (ret < 0)
  70         err(1, "utimes %s", filename);
  71     ret = chmod(filename, 0644);
  72     if (ret < 0)
  73         err(1, "chmod %s", filename);
  74     ret = chown(filename, 0, 0);
  75     ret = fstat(fd, &sb);
  76     if (ret < 0)
  77         err(1, "fstat %s", filename);
  78     if (sb.st_size != 4)
  79         errx(1, "stat 1: size = %lu != 4", (unsigned long)sb.st_size);
  80     ret = close(fd);
  81     if (ret < 0)
  82         err(1, "close %s", filename);
  83     ret = stat(filename, &sb);
  84     if (ret < 0)
  85         err(1, "stat %s", filename);
  86     if (sb.st_size != 4)
  87         errx(1, "stat 1: size = %lu != 4", (unsigned long)sb.st_size);
  88 }
  89
  90 int
  91 main(int argc, char **argv)
  92 {
  93     const char *file = "blaha";
  94
  95     if (argc != 1 && argc != 2)
  96         errx(1, "usage: %s [file]", argv[0]);
  97     if (argc == 2)
  98         file = argv[1];
  99     doit(file);
 100     return 0;
 101 }