1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 #include "systemd/sd-daemon.h"
35 #include "sd-readahead.h"
39 static bool arg_ready = false;
40 static pid_t arg_pid = 0;
41 static const char *arg_status = NULL;
42 static bool arg_booted = false;
43 static const char *arg_readahead = NULL;
45 static void help(void) {
46 printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n"
47 "Notify the init system about service status updates.\n\n"
48 " -h --help Show this help\n"
49 " --version Show package version\n"
50 " --ready Inform the init system about service start-up completion\n"
51 " --pid[=PID] Set main pid of daemon\n"
52 " --status=TEXT Set status text\n"
53 " --booted Returns 0 if the system was booted up with systemd, non-zero otherwise\n"
54 " --readahead=ACTION Controls read-ahead operations\n",
55 program_invocation_short_name);
58 static int parse_argv(int argc, char *argv[]) {
69 static const struct option options[] = {
70 { "help", no_argument, NULL, 'h' },
71 { "version", no_argument, NULL, ARG_VERSION },
72 { "ready", no_argument, NULL, ARG_READY },
73 { "pid", optional_argument, NULL, ARG_PID },
74 { "status", required_argument, NULL, ARG_STATUS },
75 { "booted", no_argument, NULL, ARG_BOOTED },
76 { "readahead", required_argument, NULL, ARG_READAHEAD },
85 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
95 puts(SYSTEMD_FEATURES);
105 if (parse_pid(optarg, &arg_pid) < 0) {
106 log_error("Failed to parse PID %s.", optarg);
123 arg_readahead = optarg;
130 assert_not_reached("Unhandled option");
134 if (optind >= argc &&
147 int main(int argc, char* argv[]) {
148 _cleanup_free_ char *status = NULL, *cpid = NULL, *n = NULL;
149 _cleanup_strv_free_ char **final_env = NULL;
154 log_parse_environment();
157 r = parse_argv(argc, argv);
162 return sd_booted() <= 0;
165 r = sd_readahead(arg_readahead);
167 log_error("Failed to issue read-ahead control command: %s", strerror(-r));
173 our_env[i++] = (char*) "READY=1";
176 status = strappend("STATUS=", arg_status);
182 our_env[i++] = status;
186 if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0) {
196 final_env = strv_env_merge(2, our_env, argv + optind);
202 if (strv_length(final_env) <= 0) {
207 n = strv_join(final_env, "\n");
213 r = sd_pid_notify(arg_pid, false, n);
215 log_error("Failed to notify init system: %s", strerror(-r));
223 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;