none/tests/nocwd.c

   1 #include <limits.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <unistd.h>
   6 #include <sys/stat.h>
   7 #include <sys/types.h>
   8
   9 int
  10 main (int argc, char **argv)
  11 {
  12   char template[] = "/tmp/wd_test_XXXXXX";
  13   char *tmpdir = mkdtemp(template);
  14   if (tmpdir == NULL)
  15     {
  16       perror ("Couldn't mkdtemp");
  17       exit (-1);
  18     }
  19
  20   if (chdir (tmpdir) != 0)
  21     {
  22       perror ("Couldn't chdir into tmpdir");
  23       exit (-1);
  24     }
  25
  26   /* Go deep. */
  27   int dirslen = PATH_MAX;
  28   while (dirslen > 0)
  29     {
  30       /* We don't do any error checking in case some OS fails. */
  31       mkdir ("subdir", S_IRWXU);
  32       chdir ("subdir");
  33       dirslen -= strlen ("subdir");
  34     }
  35
  36   /* Make one component inaccessible. */
  37   chmod(tmpdir, 0);
  38
  39   /* Remove the current dir (don't check error, might fail). */
  40   rmdir ("../subdir");
  41
  42   execlp ("echo", "echo", "Hello", "World", (char *) NULL);
  43   perror ("Couldn't execlp");
  44   return -1;
  45 }