tests/write-6G-file.c

   1 /*
   2  * Copyright (c) 2005, 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 #include <sys/types.h>
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include <err.h>
  41 #include <errno.h>
  42 #include <fcntl.h>
  43 #include <unistd.h>
  44 #include <stdlib.h>
  45
  46 #include <atypes.h>
  47
  48 #ifndef O_LARGEFILE
  49 #define O_LARGEFILE 0
  50 #endif
  51
  52 int
  53 main(int argc, char **argv)
  54 {
  55     off_t larger = ((uint64_t)1 << 31) * 3; /* 6G; */
  56     int fd;
  57     const char *fn = "f-file";
  58     ssize_t ret;
  59     char *s;
  60
  61     s = getenv("LARGE");
  62     if (s == NULL || strcmp("yes", s) != 0)
  63         return 0;
  64
  65     if ((fd = open(fn, O_RDWR|O_CREAT|O_LARGEFILE, 0600)) < 0)
  66         err(1, "open");
  67
  68    ret =  pwrite(fd, "hej", 3, larger);
  69
  70     if (ret < 0)
  71         err(1, "pwrite");
  72
  73     close(fd);
  74
  75     return 0;
  76 }