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/* Verify that realpath returns NULL with ENAMETOOLONG if the result exceeds
NAME_MAX.
Copyright The GNU Toolchain Authors.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <support/check.h>
#include <support/temp_file.h>
#include <sys/types.h>
#include <sys/stat.h>
#define BASENAME "tst-realpath-toolong."
#ifndef PATH_MAX
# define PATH_MAX 1024
#endif
int
do_test (void)
{
char *base = support_create_and_chdir_toolong_temp_directory (BASENAME);
char buf[PATH_MAX + 1];
const char *res = realpath (".", buf);
/* canonicalize.c states that if the real path is >= PATH_MAX, then
realpath returns NULL and sets ENAMETOOLONG. */
TEST_VERIFY (res == NULL);
TEST_VERIFY (errno == ENAMETOOLONG);
free (base);
return 0;
}
#include <support/test-driver.c>
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