/* Test freopen failure. Copyright (C) 2024 Free Software Foundation, Inc. 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 <fcntl.h> #include <mcheck.h> #include <stdio.h> #include <stdlib.h> #include <support/check.h> #include <support/descriptors.h> #include <support/file_contents.h> #include <support/support.h> #include <support/temp_file.h> #include <support/test-driver.h> #include <support/xstdio.h> #define START_TEST(DESC) \ do \ { \ fds = support_descriptors_list (); \ verbose_printf (DESC); \ } \ while (0) #define END_TEST \ do \ { \ support_descriptors_check (fds); \ support_descriptors_free (fds); \ } \ while (0) int do_test (void) { mtrace (); struct support_descriptors *fds; char *temp_dir = support_create_temp_directory ("tst-freopen3"); char *file1 = xasprintf ("%s/file1", temp_dir); support_write_file_string (file1, "file1"); add_temp_file (file1); char *file2 = xasprintf ("%s/file2", temp_dir); support_write_file_string (file2, "file2"); add_temp_file (file2); char *file_nodir = xasprintf ("%s/nodir/file", temp_dir); FILE *fp; int ret; int fd; START_TEST ("Testing w -> wx (file exists)\n"); fp = xfopen (file1, "w"); fp = FREOPEN (file2, "wx", fp); TEST_VERIFY (fp == NULL); END_TEST; /* Test old file is closed even when opening the new file fails. */ START_TEST ("testing r -> r (opening new file fails)\n"); fp = xfopen (file1, "r"); fd = fileno (fp); fp = FREOPEN (file_nodir, "r", fp); TEST_VERIFY (fp == NULL); errno = 0; ret = fcntl (fd, F_GETFL); TEST_COMPARE (ret, -1); TEST_COMPARE (errno, EBADF); END_TEST; free (temp_dir); free (file1); free (file2); free (file_nodir); return 0; } #include <support/test-driver.c>