1/* Test for ftw function searching in root directory.
2 Copyright (C) 2001-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <ftw.h>
20#include <mcheck.h>
21#include <stdio.h>
22#include <string.h>
23
24
25int result;
26int cnt;
27int sawroot;
28
29
30static int
31callback (const char *fname, const struct stat *st, int flag)
32{
33 if (++cnt >= 10)
34 return 1;
35
36 printf (format: "%d: \"%s\" -> ", cnt, fname);
37 if (strcmp (fname, "/") == 0 && sawroot)
38 {
39 puts (s: "root directory reported twice");
40 result = 1;
41 }
42 else if (fname[0] != '/')
43 {
44 puts (s: "missing '/' as first character");
45 result = 1;
46 }
47 else if (fname[1] == '/')
48 {
49 puts (s: "double '/' at beginning");
50 result = 1;
51 }
52 else
53 {
54 puts (s: "OK");
55 sawroot |= strcmp (fname, "/") == 0;
56 }
57
58 return 0;
59}
60
61
62int
63main (void)
64{
65 mtrace ();
66
67 ftw (dir: "/", func: callback, descriptors: 10);
68
69 if (! sawroot)
70 {
71 puts (s: "root directory wasn't reported");
72 result = 1;
73 }
74
75 return result;
76}
77

source code of glibc/io/bug-ftw1.c