1 /* Test if ftw function doesn't leak fds.
2 Copyright (C) 2003-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
30 cb (const char *name, const struct stat64 *st, int type)
32 return cb_called++ & 1;
38 char name[32] = "/tmp/ftwXXXXXX", *p;
39 int ret, i, result = 0, fd, fd1, fd2;
41 if (mkdtemp (name) == NULL)
43 printf ("Couldn't make temporary directory: %m\n");
46 p = strchr (name, '\0');
48 if (mkdir (name, 0755) < 0)
50 printf ("Couldn't make temporary subdirectory: %m\n");
55 ret = ftw64 (name, cb, 20);
58 printf ("ftw64 returned %d instead of 1", ret);
62 fd = open (name, O_RDONLY);
65 printf ("open failed: %m\n");
68 fd1 = open (name, O_RDONLY);
71 printf ("open failed: %m\n");
79 for (i = 0; i < 128; ++i)
81 ret = ftw64 (name, cb, 20);
84 printf ("ftw64 returned %d instead of 1", ret);
89 fd = open (name, O_RDONLY);
92 printf ("open failed: %m\n");
95 fd2 = open (name, O_RDONLY);
98 printf ("open failed: %m\n");
106 if (fd2 >= fd1 + 128)
108 printf ("ftw64 leaking fds: %d -> %d\n", fd1, fd2);
112 if (cb_called != 129 * 2)
114 printf ("callback called %d times\n", cb_called);