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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
Copyright 2010 Harald Hoyer
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 <sys/stat.h>
#include "fileio-label.h"
#include "fileio.h"
#include "selinux-util.h"
int write_string_file_atomic_label_ts(const char *fn, const char *line, struct timespec *ts) {
int r;
r = mac_selinux_create_file_prepare(fn, S_IFREG);
if (r < 0)
return r;
r = write_string_file_ts(fn, line, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC, ts);
mac_selinux_create_file_clear();
return r;
}
int write_env_file_label(const char *fname, char **l) {
int r;
r = mac_selinux_create_file_prepare(fname, S_IFREG);
if (r < 0)
return r;
r = write_env_file(fname, l);
mac_selinux_create_file_clear();
return r;
}
int fopen_temporary_label(const char *target,
const char *path, FILE **f, char **temp_path) {
int r;
r = mac_selinux_create_file_prepare(target, S_IFREG);
if (r < 0)
return r;
r = fopen_temporary(path, f, temp_path);
mac_selinux_create_file_clear();
return r;
}
int create_shutdown_run_nologin_or_warn(void) {
int r;
/* This is used twice: once in systemd-user-sessions.service, in order to block logins when we actually go
* down, and once in systemd-logind.service when shutdowns are scheduled, and logins are to be turned off a bit
* in advance. We use the same wording of the message in both cases. */
r = write_string_file_atomic_label("/run/nologin",
"System is going down. Unprivileged users are not permitted to log in anymore. "
"For technical details, see pam_nologin(8).");
if (r < 0)
return log_error_errno(r, "Failed to create /run/nologin: %m");
return 0;
}
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