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
8static int cb_called;
9
10static int
11cb (const char *fname, const struct stat *st, int flag)
12{
13 printf (format: "%s %d\n", fname, flag);
14 cb_called = 1;
15 return 0;
16}
17
18int
19main (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 if (getuid () == 0)
29 {
30 puts (s: "this test needs to be run by ordinary user");
31 exit (0);
32 }
33
34 dname = mkdtemp (template: tmp);
35 if (dname == NULL)
36 {
37 printf (format: "mkdtemp: %m\n");
38 exit (1);
39 }
40
41 memcpy (tmp2, tmp, strlen (tmp));
42 dname2 = mkdtemp (template: tmp2);
43 if (dname2 == NULL)
44 {
45 printf (format: "mkdtemp: %m\n");
46 rmdir (path: dname);
47 exit (1);
48 }
49
50 if (chmod (file: dname, S_IWUSR|S_IWGRP|S_IWOTH) != 0)
51 {
52 printf (format: "chmod: %m\n");
53 rmdir (path: dname);
54 exit (1);
55 }
56
57 r = ftw (dir: dname2, func: cb, descriptors: 10);
58 e = errno;
59 printf (format: "r = %d", r);
60 if (r != 0)
61 printf (format: ", errno = %d", errno);
62 puts (s: "");
63
64 chmod (file: dname, S_IRWXU|S_IRWXG|S_IRWXO);
65 rmdir (path: dname2);
66 rmdir (path: dname);
67
68 return (r != -1 && e == EACCES) || cb_called;
69}
70

source code of glibc/io/bug-ftw3.c