/*** This file is part of systemd. Copyright 2014 Zbigniew Jędrzejewski-Szmek 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 <stdio.h> #include <stdlib.h> #include <unistd.h> #include "alloc-util.h" #include "fd-util.h" #include "fileio.h" #include "formats-util.h" #include "fs-util.h" #include "log.h" #include "string-util.h" #include "util.h" int main(int argc, char** argv) { _cleanup_free_ char *cmd = NULL, *cmd2 = NULL, *ans = NULL, *ans2 = NULL, *d = NULL, *tmp = NULL, *line = NULL; _cleanup_close_ int fd = -1, fd2 = -1; const char *p = argv[1] ?: "/tmp"; char *pattern; log_set_max_level(LOG_DEBUG); log_parse_environment(); pattern = strjoina(p, "/systemd-test-XXXXXX"); fd = open_tmpfile_unlinkable(p, O_RDWR|O_CLOEXEC); assert_se(fd >= 0); assert_se(asprintf(&cmd, "ls -l /proc/"PID_FMT"/fd/%d", getpid(), fd) > 0); (void) system(cmd); assert_se(readlink_malloc(cmd + 6, &ans) >= 0); log_debug("link1: %s", ans); assert_se(endswith(ans, " (deleted)")); fd2 = mkostemp_safe(pattern, O_RDWR|O_CLOEXEC); assert_se(fd >= 0); assert_se(unlink(pattern) == 0); assert_se(asprintf(&cmd2, "ls -l /proc/"PID_FMT"/fd/%d", getpid(), fd2) > 0); (void) system(cmd2); assert_se(readlink_malloc(cmd2 + 6, &ans2) >= 0); log_debug("link2: %s", ans2); assert_se(endswith(ans2, " (deleted)")); pattern = strjoina(p, "/tmpfiles-test"); assert_se(tempfn_random(pattern, NULL, &d) >= 0); fd = open_tmpfile_linkable(d, O_RDWR|O_CLOEXEC, &tmp); assert_se(fd >= 0); assert_se(write(fd, "foobar\n", 7) == 7); assert_se(touch(d) >= 0); assert_se(link_tmpfile(fd, tmp, d) == -EEXIST); assert_se(unlink(d) >= 0); assert_se(link_tmpfile(fd, tmp, d) >= 0); assert_se(read_one_line_file(d, &line) >= 0); assert_se(streq(line, "foobar")); assert_se(unlink(d) >= 0); return 0; }