tests/create-symlinks.c

   1 /*
   2  * Copyright (c) 1995, 1996, 1997, 1998, 1999 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 <sys/types.h>
  42 #include <sys/stat.h>
  43 #include <fcntl.h>
  44 #include <unistd.h>
  45 #include <dirent.h>
  46
  47 #include <err.h>
  48 #include <roken.h>
  49
  50 #ifdef RCSID
  51 RCSID("$Id$");
  52 #endif
  53
  54 #define CONTENT_STRING "kaka"
  55
  56 static FILE *verbose_fp = NULL;
  57
  58 static int
  59 creat_symlinks (int count)
  60 {
  61     int ret;
  62     int i;
  63
  64     fprintf (verbose_fp, "creating:");
  65
  66     for (i = 0; i < count; ++i) {
  67         char num[17];
  68
  69         fprintf (verbose_fp, " c%d", i);
  70         fflush (verbose_fp);
  71
  72         snprintf (num, sizeof(num), "%d", i);
  73
  74         ret = symlink (CONTENT_STRING, num);
  75         if (ret < 0)
  76             err (1, "symlink %s", num);
  77     }
  78     fprintf (verbose_fp, "\n");
  79     return 0;
  80 }
  81
  82 static int
  83 verify_contents (int count)
  84 {
  85     int ret, i;
  86     char file[MAXPATHLEN];
  87     char content[MAXPATHLEN];
  88
  89     fprintf (verbose_fp, "reading:");
  90     for (i = 0; i < count; i++) {
  91         fprintf (verbose_fp, " r%d", i);
  92         fflush (verbose_fp);
  93
  94         snprintf (file, sizeof(file), "%d", i);
  95         ret = readlink (file, content, sizeof(content) - 1);
  96         if (ret < 0)
  97             err (1, "readlink: %d", i);
  98         content[ret] = '\0';
  99         if (strcmp (CONTENT_STRING, content) != 0)
 100             errx (1, "%s != %s", content, CONTENT_STRING);
 101     }
 102     fprintf (verbose_fp, "\n");
 103     return 0;
 104 }
 105
 106 static void
 107 usage (int ret)
 108 {
 109     fprintf (stderr, "%s number-of-symlinks\n", getprogname());
 110     exit (ret);
 111 }
 112
 113 int
 114 main(int argc, char **argv)
 115 {
 116     char *ptr;
 117     int count;
 118
 119     setprogname (argv[0]);
 120
 121     if (argc != 2)
 122         usage (1);
 123
 124     verbose_fp = fdopen (4, "w");
 125     if (verbose_fp == NULL) {
 126         verbose_fp = fopen ("/dev/null", "w");
 127         if (verbose_fp == NULL)
 128             err (1, "fopen");
 129     }
 130
 131     count = strtol (argv[1], &ptr, 0);
 132     if (count == 0 && ptr == argv[1])
 133         errx (1, "'%s' not a number", argv[1]);
 134
 135     return creat_symlinks (count) ||
 136         verify_contents(count);
 137 }