test/misc/bug-readdir1.c

   1 #include <dirent.h>
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include <sys/types.h>
   7
   8
   9 int
  10 main (void)
  11 {
  12   DIR *dirp;
  13   struct dirent* ent;
  14
  15   /* open a dir stream */
  16   dirp = opendir ("/tmp");
  17   if (dirp == NULL)
  18     {
  19       if (errno == ENOENT)
  20         exit (0);
  21
  22       perror ("opendir");
  23       exit (1);
  24     }
  25
  26   /* close the directory file descriptor, making it invalid */
  27   if (close (dirfd (dirp)) != 0)
  28     {
  29       puts ("could not close directory file descriptor");
  30       /* This is not an error.  It is not guaranteed this is possible.  */
  31       return 0;
  32     }
  33
  34   ent = readdir (dirp);
  35
  36   return ent != NULL || errno != EBADF;
  37 }