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93787845 | 1 | /* Test if ftw function doesn't leak fds. |
04277e02 | 2 | Copyright (C) 2003-2019 Free Software Foundation, Inc. |
93787845 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
93787845 UD |
19 | |
20 | #include <fcntl.h> | |
21 | #include <ftw.h> | |
22 | #include <stdlib.h> | |
23 | #include <stdio.h> | |
5146ec9a | 24 | #include <string.h> |
93787845 UD |
25 | #include <sys/stat.h> |
26 | #include <unistd.h> | |
27 | ||
28 | static int cb_called; | |
29 | ||
30 | static int | |
31 | cb (const char *name, const struct stat64 *st, int type) | |
32 | { | |
33 | return cb_called++ & 1; | |
34 | } | |
35 | ||
36 | int | |
37 | main (void) | |
38 | { | |
39 | char name[32] = "/tmp/ftwXXXXXX", *p; | |
40 | int ret, i, result = 0, fd, fd1, fd2; | |
41 | ||
42 | if (mkdtemp (name) == NULL) | |
43 | { | |
44 | printf ("Couldn't make temporary directory: %m\n"); | |
45 | exit (EXIT_FAILURE); | |
46 | } | |
47 | p = strchr (name, '\0'); | |
48 | strcpy (p, "/1"); | |
49 | if (mkdir (name, 0755) < 0) | |
50 | { | |
51 | printf ("Couldn't make temporary subdirectory: %m\n"); | |
52 | exit (EXIT_FAILURE); | |
53 | } | |
54 | *p = '\0'; | |
55 | ||
56 | ret = ftw64 (name, cb, 20); | |
57 | if (ret != 1) | |
58 | { | |
59 | printf ("ftw64 returned %d instead of 1", ret); | |
60 | result = 1; | |
61 | } | |
62 | ||
63 | fd = open (name, O_RDONLY); | |
64 | if (fd < 0) | |
65 | { | |
66 | printf ("open failed: %m\n"); | |
67 | result = 1; | |
68 | } | |
69 | fd1 = open (name, O_RDONLY); | |
70 | if (fd1 < 0) | |
71 | { | |
72 | printf ("open failed: %m\n"); | |
73 | result = 1; | |
74 | } | |
75 | else | |
76 | close (fd1); | |
77 | if (fd >= 0) | |
78 | close (fd); | |
79 | ||
80 | for (i = 0; i < 128; ++i) | |
81 | { | |
82 | ret = ftw64 (name, cb, 20); | |
83 | if (ret != 1) | |
84 | { | |
85 | printf ("ftw64 returned %d instead of 1", ret); | |
86 | result = 1; | |
87 | } | |
88 | } | |
89 | ||
90 | fd = open (name, O_RDONLY); | |
91 | if (fd < 0) | |
92 | { | |
93 | printf ("open failed: %m\n"); | |
94 | result = 1; | |
95 | } | |
96 | fd2 = open (name, O_RDONLY); | |
97 | if (fd2 < 0) | |
98 | { | |
99 | printf ("open failed: %m\n"); | |
100 | result = 1; | |
101 | } | |
102 | else | |
103 | close (fd2); | |
104 | if (fd >= 0) | |
105 | close (fd); | |
106 | ||
107 | if (fd2 >= fd1 + 128) | |
108 | { | |
109 | printf ("ftw64 leaking fds: %d -> %d\n", fd1, fd2); | |
110 | result = 1; | |
111 | } | |
112 | ||
113 | if (cb_called != 129 * 2) | |
114 | { | |
115 | printf ("callback called %d times\n", cb_called); | |
116 | result = 1; | |
117 | } | |
118 | ||
119 | strcpy (p, "/1"); | |
120 | rmdir (name); | |
121 | *p = '\0'; | |
122 | rmdir (name); | |
123 | return result; | |
124 | } |