/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2010 Lennart Poettering 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 <getopt.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "sd-daemon.h" #include "alloc-util.h" #include "env-util.h" #include "formats-util.h" #include "log.h" #include "parse-util.h" #include "string-util.h" #include "strv.h" #include "util.h" static bool arg_ready = false; static pid_t arg_pid = 0; static const char *arg_status = NULL; static bool arg_booted = false; static void help(void) { printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n" "Notify the init system about service status updates.\n\n" " -h --help Show this help\n" " --version Show package version\n" " --ready Inform the init system about service start-up completion\n" " --pid[=PID] Set main pid of daemon\n" " --status=TEXT Set status text\n" " --booted Check if the system was booted up with systemd\n", program_invocation_short_name); } static int parse_argv(int argc, char *argv[]) { enum { ARG_READY = 0x100, ARG_VERSION, ARG_PID, ARG_STATUS, ARG_BOOTED, }; static const struct option options[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, ARG_VERSION }, { "ready", no_argument, NULL, ARG_READY }, { "pid", optional_argument, NULL, ARG_PID }, { "status", required_argument, NULL, ARG_STATUS }, { "booted", no_argument, NULL, ARG_BOOTED }, {} }; int c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { switch (c) { case 'h': help(); return 0; case ARG_VERSION: return version(); case ARG_READY: arg_ready = true; break; case ARG_PID: if (optarg) { if (parse_pid(optarg, &arg_pid) < 0) { log_error("Failed to parse PID %s.", optarg); return -EINVAL; } } else arg_pid = getppid(); break; case ARG_STATUS: arg_status = optarg; break; case ARG_BOOTED: arg_booted = true; break; case '?': return -EINVAL; default: assert_not_reached("Unhandled option"); } } if (optind >= argc && !arg_ready && !arg_status && !arg_pid && !arg_booted) { help(); return -EINVAL; } return 1; } int main(int argc, char* argv[]) { _cleanup_free_ char *status = NULL, *cpid = NULL, *n = NULL; _cleanup_strv_free_ char **final_env = NULL; char* our_env[4]; unsigned i = 0; int r; log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) goto finish; if (arg_booted) return sd_booted() <= 0; if (arg_ready) our_env[i++] = (char*) "READY=1"; if (arg_status) { status = strappend("STATUS=", arg_status); if (!status) { r = log_oom(); goto finish; } our_env[i++] = status; } if (arg_pid > 0) { if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0) { r = log_oom(); goto finish; } our_env[i++] = cpid; } our_env[i++] = NULL; final_env = strv_env_merge(2, our_env, argv + optind); if (!final_env) { r = log_oom(); goto finish; } if (strv_length(final_env) <= 0) { r = 0; goto finish; } n = strv_join(final_env, "\n"); if (!n) { r = log_oom(); goto finish; } r = sd_pid_notify(arg_pid ? arg_pid : getppid(), false, n); if (r < 0) { log_error_errno(r, "Failed to notify init system: %m"); goto finish; } else if (r == 0) { log_error("No status data could be sent: $NOTIFY_SOCKET was not set"); r = -EOPNOTSUPP; } finish: return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }