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124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
/* Test if ftw function doesn't leak fds.
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Copyright (C) 2003-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <fcntl.h>
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#include <ftw.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <unistd.h>
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static int cb_called;
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static int
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cb (const char *name, const struct stat64 *st, int type)
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{
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return cb_called++ & 1;
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}
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int
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main (void)
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{
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char name[32] = "/tmp/ftwXXXXXX", *p;
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int ret, i, result = 0, fd, fd1, fd2;
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if (mkdtemp (name) == NULL)
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{
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printf ("Couldn't make temporary directory: %m\n");
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exit (EXIT_FAILURE);
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}
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p = strchr (name, '\0');
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strcpy (p, "/1");
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if (mkdir (name, 0755) < 0)
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{
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printf ("Couldn't make temporary subdirectory: %m\n");
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exit (EXIT_FAILURE);
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}
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*p = '\0';
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ret = ftw64 (name, cb, 20);
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if (ret != 1)
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{
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printf ("ftw64 returned %d instead of 1", ret);
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result = 1;
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}
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fd = open (name, O_RDONLY);
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if (fd < 0)
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{
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printf ("open failed: %m\n");
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result = 1;
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}
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fd1 = open (name, O_RDONLY);
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if (fd1 < 0)
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{
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printf ("open failed: %m\n");
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result = 1;
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}
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else
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close (fd1);
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if (fd >= 0)
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close (fd);
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for (i = 0; i < 128; ++i)
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{
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ret = ftw64 (name, cb, 20);
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if (ret != 1)
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{
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printf ("ftw64 returned %d instead of 1", ret);
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result = 1;
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}
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}
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fd = open (name, O_RDONLY);
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if (fd < 0)
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{
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printf ("open failed: %m\n");
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result = 1;
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}
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fd2 = open (name, O_RDONLY);
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if (fd2 < 0)
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{
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printf ("open failed: %m\n");
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result = 1;
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}
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else
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close (fd2);
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if (fd >= 0)
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close (fd);
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if (fd2 >= fd1 + 128)
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{
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printf ("ftw64 leaking fds: %d -> %d\n", fd1, fd2);
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result = 1;
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}
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if (cb_called != 129 * 2)
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{
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printf ("callback called %d times\n", cb_called);
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result = 1;
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}
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strcpy (p, "/1");
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rmdir (name);
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*p = '\0';
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rmdir (name);
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return result;
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}
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