io/bug-ftw3.c

   1 #include <errno.h>
   2 #include <ftw.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7
   8 static int cb_called;
   9
  10 static int
  11 cb (const char *fname, const struct stat *st, int flag)
  12 {
  13   printf ("%s %d\n", fname, flag);
  14   cb_called = 1;
  15   return 0;
  16 }
  17
  18 int
  19 main (void)
  20 {
  21   char tmp[] = "/tmp/ftwXXXXXX";
  22   char tmp2[] = "/tmp/ftwXXXXXX/ftwXXXXXX";
  23   char *dname;
  24   char *dname2;
  25   int r;
  26   int e;
  27
  28   dname = mkdtemp (tmp);
  29   if (dname == NULL)
  30     {
  31       printf ("mkdtemp: %m\n");
  32       exit (1);
  33     }
  34
  35   memcpy (tmp2, tmp, strlen (tmp));
  36   dname2 = mkdtemp (tmp2);
  37   if (dname2 == NULL)
  38     {
  39       printf ("mkdtemp: %m\n");
  40       rmdir (dname);
  41       exit (1);
  42     }
  43
  44   if (chmod (dname, S_IWUSR|S_IWGRP|S_IWOTH) != 0)
  45     {
  46       printf ("chmod: %m\n");
  47       rmdir (dname);
  48       exit (1);
  49     }
  50
  51   r = ftw (dname2, cb, 10);
  52   e = errno;
  53   printf ("r = %d", r);
  54   if (r != 0)
  55     printf (", errno = %d", errno);
  56   puts ("");
  57
  58   chmod (dname, S_IRWXU|S_IRWXG|S_IRWXO);
  59   rmdir (dname2);
  60   rmdir (dname);
  61
  62   return (r != -1 && e == EACCES) || cb_called;
  63 }