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/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
Copyright 2011 Michal Schmidt
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 <errno.h>
#include <stdio.h>
#include <unistd.h>
#include "systemd-basic/alloc-util.h"
#include "systemd-basic/log.h"
#include "systemd-basic/mkdir.h"
#include "systemd-basic/string-util.h"
#include "systemd-basic/util.h"
#ifndef RC_LOCAL_SCRIPT_PATH_START
#define RC_LOCAL_SCRIPT_PATH_START "/etc/rc.d/rc.local"
#endif
#ifndef RC_LOCAL_SCRIPT_PATH_STOP
#define RC_LOCAL_SCRIPT_PATH_STOP "/sbin/halt.local"
#endif
static const char *arg_dest = "/tmp";
static int add_symlink(const char *service, const char *where) {
_cleanup_free_ char *from = NULL, *to = NULL;
int r;
assert(service);
assert(where);
from = strjoin(SYSTEM_DATA_UNIT_PATH, "/", service, NULL);
if (!from)
return log_oom();
to = strjoin(arg_dest, "/", where, ".wants/", service, NULL);
if (!to)
return log_oom();
mkdir_parents_label(to, 0755);
r = symlink(from, to);
if (r < 0) {
if (errno == EEXIST)
return 0;
return log_error_errno(errno, "Failed to create symlink %s: %m", to);
}
return 1;
}
int main(int argc, char *argv[]) {
int r = EXIT_SUCCESS;
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
return EXIT_FAILURE;
}
if (argc > 1)
arg_dest = argv[1];
log_set_target(LOG_TARGET_SAFE);
log_parse_environment();
log_open();
umask(0022);
if (access(RC_LOCAL_SCRIPT_PATH_START, X_OK) >= 0) {
log_debug("Automatically adding rc-local.service.");
if (add_symlink("rc-local.service", "multi-user.target") < 0)
r = EXIT_FAILURE;
}
if (access(RC_LOCAL_SCRIPT_PATH_STOP, X_OK) >= 0) {
log_debug("Automatically adding halt-local.service.");
if (add_symlink("halt-local.service", "final.target") < 0)
r = EXIT_FAILURE;
}
return r;
}
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