src/tests/blocks-new-file.c

   1 /*
   2  * Copyright (c) 2001 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 <sys/types.h>
  41 #include <sys/stat.h>
  42 #include <fcntl.h>
  43 #include <unistd.h>
  44
  45 #include <err.h>
  46
  47 static void
  48 doit(const char *filename)
  49 {
  50     int fd;
  51     struct stat sb;
  52
  53     fd = open(filename, O_RDWR | O_TRUNC | O_CREAT, 0666);
  54     if (fd < 0)
  55         err(1, "open %s", filename);
  56     if (lseek(fd, (off_t) (1024 * 1024), SEEK_SET) != 1024 * 1024)
  57         err(1, "lseek %s", filename);
  58     if (write(fd, "hej", 3) != 3)
  59         err(1, "write to %s", filename);
  60     if (close(fd) < 0)
  61         err(1, "close %s", filename);
  62     if (stat(filename, &sb) < 0)
  63         err(1, "stat %s", filename);
  64     if (unlink(filename) < 0)
  65         err(1, "unlink %s", filename);
  66     if (sb.st_blocks == 0)
  67         errx(1, "st_blocks == 0");
  68 }
  69
  70 int
  71 main(int argc, char **argv)
  72 {
  73
  74     if (argc == 1)
  75         doit("foo");
  76     else if (argc == 2)
  77         doit(argv[1]);
  78     else
  79         errx(1, "usage: %s [filename]", argv[0]);
  80     return 0;
  81 }