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 General Public License as published by
10 the Free Software Foundation; either version 2 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 General Public License for more details.
18 You should have received a copy of the GNU 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"
37 static bool arg_ready
= false;
38 static pid_t arg_pid
= 0;
39 static const char *arg_status
= NULL
;
40 static bool arg_booted
= false;
41 static const char *arg_readahead
= NULL
;
43 static int help(void) {
45 printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n"
46 "Notify the init system about service status updates.\n\n"
47 " -h --help Show this help\n"
48 " --ready Inform the init system about service start-up completion\n"
49 " --pid[=PID] Set main pid of daemon\n"
50 " --status=TEXT Set status text\n"
51 " --booted Returns 0 if the system was booted up with systemd, non-zero otherwise\n"
52 " --readahead=ACTION Controls read-ahead operations\n",
53 program_invocation_short_name
);
58 static int parse_argv(int argc
, char *argv
[]) {
68 static const struct option options
[] = {
69 { "help", no_argument
, NULL
, 'h' },
70 { "ready", no_argument
, NULL
, ARG_READY
},
71 { "pid", optional_argument
, NULL
, ARG_PID
},
72 { "status", required_argument
, NULL
, ARG_STATUS
},
73 { "booted", no_argument
, NULL
, ARG_BOOTED
},
74 { "readahead", required_argument
, NULL
, ARG_READAHEAD
},
83 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0) {
98 if (parse_pid(optarg
, &arg_pid
) < 0) {
99 log_error("Failed to parse PID %s.", optarg
);
116 arg_readahead
= optarg
;
123 log_error("Unknown option code %c", c
);
128 if (optind
>= argc
&&
141 int main(int argc
, char* argv
[]) {
142 char* our_env
[4], **final_env
= NULL
;
144 char *status
= NULL
, *cpid
= NULL
, *n
= NULL
;
145 int r
, retval
= EXIT_FAILURE
;
147 log_parse_environment();
150 if ((r
= parse_argv(argc
, argv
)) <= 0) {
151 retval
= r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;
156 return sd_booted() <= 0;
159 if ((r
= sd_readahead(arg_readahead
)) < 0) {
160 log_error("Failed to issue read-ahead control command: %s", strerror(-r
));
166 our_env
[i
++] = (char*) "READY=1";
169 if (!(status
= strappend("STATUS=", arg_status
))) {
170 log_error("Failed to allocate STATUS string.");
174 our_env
[i
++] = status
;
178 if (asprintf(&cpid
, "MAINPID=%lu", (unsigned long) arg_pid
) < 0) {
179 log_error("Failed to allocate MAINPID string.");
188 if (!(final_env
= strv_env_merge(2, our_env
, argv
+ optind
))) {
189 log_error("Failed to merge string sets.");
193 if (strv_length(final_env
) <= 0) {
194 retval
= EXIT_SUCCESS
;
198 if (!(n
= strv_join(final_env
, "\n"))) {
199 log_error("Failed to concatenate strings.");
203 if ((r
= sd_notify(false, n
)) < 0) {
204 log_error("Failed to notify init system: %s", strerror(-r
));
208 retval
= r
<= 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;
215 strv_free(final_env
);