stdlib/test-canon2.c

   1 /* Test for realpath/canonicalize function.
   2    Copyright (C) 1998 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <errno.h>
  22 #include <string.h>
  23
  24
  25 /* Prototype for our test function.  */
  26 extern void do_prepare (int argc, char *argv[]);
  27 extern int do_test (int argc, char *argv[]);
  28
  29 /* We have a preparation function.  */
  30 #define PREPARE do_prepare
  31
  32 #include <test-skeleton.c>
  33
  34 /* Name of the temporary files we create.  */
  35 char *name1;
  36 char *name2;
  37
  38 /* Preparation.  */
  39 void
  40 do_prepare (int argc, char *argv[])
  41 {
  42   size_t test_dir_len;
  43
  44   test_dir_len = strlen (test_dir);
  45
  46   /* Generate the circular symlinks.  */
  47   name1 = malloc (test_dir_len + sizeof ("/canonXXXXXX"));
  48   mempcpy (mempcpy (name1, test_dir, test_dir_len),
  49            "/canonXXXXXX", sizeof ("/canonXXXXXX"));
  50   name2 = strdup (name1);
  51
  52   add_temp_file (mktemp (name1));
  53   add_temp_file (mktemp (name2));
  54 }
  55
  56
  57 /* Run the test.  */
  58 int
  59 do_test (int argc, char *argv[])
  60 {
  61   char *canon;
  62
  63   printf ("create symlinks from %s to %s and vice versa\n", name1, name2);
  64   if (symlink (name1, name2) == -1
  65       || symlink (name2, name1) == -1)
  66     /* We cannot test this.  */
  67     return 0;
  68
  69   /* Call the function.  This is equivalent the using `realpath' but the
  70      function allocates the room for the result.  */
  71   errno = 0;
  72   canon = canonicalize_file_name (name1);
  73
  74   return canon != NULL || errno != ELOOP;
  75 }