/*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd 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. systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <fcntl.h> #include <unistd.h> #include "alloc-util.h" #include "fd-util.h" #include "fileio.h" #include "macro.h" static void test_close_many(void) { int fds[3]; char name0[] = "/tmp/test-close-many.XXXXXX"; char name1[] = "/tmp/test-close-many.XXXXXX"; char name2[] = "/tmp/test-close-many.XXXXXX"; fds[0] = mkostemp_safe(name0); fds[1] = mkostemp_safe(name1); fds[2] = mkostemp_safe(name2); close_many(fds, 2); assert_se(fcntl(fds[0], F_GETFD) == -1); assert_se(fcntl(fds[1], F_GETFD) == -1); assert_se(fcntl(fds[2], F_GETFD) >= 0); safe_close(fds[2]); unlink(name0); unlink(name1); unlink(name2); } static void test_close_nointr(void) { char name[] = "/tmp/test-test-close_nointr.XXXXXX"; int fd; fd = mkostemp_safe(name); assert_se(fd >= 0); assert_se(close_nointr(fd) >= 0); assert_se(close_nointr(fd) < 0); unlink(name); } static void test_same_fd(void) { _cleanup_close_pair_ int p[2] = { -1, -1 }; _cleanup_close_ int a = -1, b = -1, c = -1; assert_se(pipe2(p, O_CLOEXEC) >= 0); assert_se((a = dup(p[0])) >= 0); assert_se((b = open("/dev/null", O_RDONLY|O_CLOEXEC)) >= 0); assert_se((c = dup(a)) >= 0); assert_se(same_fd(p[0], p[0]) > 0); assert_se(same_fd(p[1], p[1]) > 0); assert_se(same_fd(a, a) > 0); assert_se(same_fd(b, b) > 0); assert_se(same_fd(a, p[0]) > 0); assert_se(same_fd(p[0], a) > 0); assert_se(same_fd(c, p[0]) > 0); assert_se(same_fd(p[0], c) > 0); assert_se(same_fd(a, c) > 0); assert_se(same_fd(c, a) > 0); assert_se(same_fd(p[0], p[1]) == 0); assert_se(same_fd(p[1], p[0]) == 0); assert_se(same_fd(p[0], b) == 0); assert_se(same_fd(b, p[0]) == 0); assert_se(same_fd(p[1], a) == 0); assert_se(same_fd(a, p[1]) == 0); assert_se(same_fd(p[1], b) == 0); assert_se(same_fd(b, p[1]) == 0); assert_se(same_fd(a, b) == 0); assert_se(same_fd(b, a) == 0); } int main(int argc, char *argv[]) { test_close_many(); test_close_nointr(); test_same_fd(); return 0; }