102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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Copyright 2011 Michal Schmidt
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "alloc-util.h"
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#include "log.h"
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#include "mkdir.h"
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#include "string-util.h"
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#include "util.h"
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#ifndef RC_LOCAL_SCRIPT_PATH_START
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#define RC_LOCAL_SCRIPT_PATH_START "/etc/rc.d/rc.local"
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#endif
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#ifndef RC_LOCAL_SCRIPT_PATH_STOP
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#define RC_LOCAL_SCRIPT_PATH_STOP "/sbin/halt.local"
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#endif
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static const char *arg_dest = "/tmp";
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static int add_symlink(const char *service, const char *where) {
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_cleanup_free_ char *from = NULL, *to = NULL;
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int r;
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assert(service);
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assert(where);
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from = strjoin(SYSTEM_DATA_UNIT_PATH, "/", service);
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if (!from)
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return log_oom();
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to = strjoin(arg_dest, "/", where, ".wants/", service);
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if (!to)
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return log_oom();
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mkdir_parents_label(to, 0755);
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r = symlink(from, to);
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if (r < 0) {
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if (errno == EEXIST)
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return 0;
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return log_error_errno(errno, "Failed to create symlink %s: %m", to);
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}
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return 1;
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}
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int main(int argc, char *argv[]) {
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int r = EXIT_SUCCESS;
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if (argc > 1 && argc != 4) {
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log_error("This program takes three or no arguments.");
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return EXIT_FAILURE;
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}
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if (argc > 1)
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arg_dest = argv[1];
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log_set_target(LOG_TARGET_SAFE);
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log_parse_environment();
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log_open();
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umask(0022);
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if (access(RC_LOCAL_SCRIPT_PATH_START, X_OK) >= 0) {
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log_debug("Automatically adding rc-local.service.");
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if (add_symlink("rc-local.service", "multi-user.target") < 0)
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r = EXIT_FAILURE;
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}
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if (access(RC_LOCAL_SCRIPT_PATH_STOP, X_OK) >= 0) {
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log_debug("Automatically adding halt-local.service.");
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if (add_symlink("halt-local.service", "final.target") < 0)
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r = EXIT_FAILURE;
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}
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return r;
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}
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