71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* test ftw bz26353: Check whether stack overflow occurs when the value
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of the nopenfd parameter is too large.
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Copyright (C) 2020-2022 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 <stdlib.h>
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#include <stdio.h>
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#include <ftw.h>
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#include <errno.h>
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#include <sys/resource.h>
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#include <support/temp_file.h>
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#include <support/capture_subprocess.h>
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#include <support/check.h>
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static int
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my_func (const char *file, const struct stat *sb, int flag)
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{
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return 0;
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}
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static int
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get_large_nopenfd (void)
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{
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struct rlimit r;
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TEST_COMPARE (getrlimit (RLIMIT_STACK, &r), 0);
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if (r.rlim_cur == RLIM_INFINITY)
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{
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r.rlim_cur = 8 * 1024 * 1024;
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TEST_COMPARE (setrlimit (RLIMIT_STACK, &r), 0);
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}
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return (int) r.rlim_cur;
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}
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static void
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do_ftw (void *unused)
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{
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char *tempdir = support_create_temp_directory ("tst-bz26353");
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int large_nopenfd = get_large_nopenfd ();
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TEST_COMPARE (ftw (tempdir, my_func, large_nopenfd), 0);
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free (tempdir);
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}
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/* Check whether stack overflow occurs. */
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static int
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do_test (void)
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{
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struct support_capture_subprocess result;
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result = support_capture_subprocess (do_ftw, NULL);
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support_capture_subprocess_check (&result, "bz26353", 0, sc_allow_none);
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support_capture_subprocess_free (&result);
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return 0;
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}
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#include <support/test-driver.c>
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