]>
Commit | Line | Data |
---|---|---|
d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
4a2a8b5a LP |
2 | |
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
4a2a8b5a LP |
11 | (at your option) any later version. |
12 | ||
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
4a2a8b5a | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
4a2a8b5a LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
4a2a8b5a | 22 | #include <errno.h> |
6f2deb84 LP |
23 | #include <getopt.h> |
24 | #include <stdio.h> | |
4a2a8b5a | 25 | #include <stdlib.h> |
6f2deb84 | 26 | #include <unistd.h> |
4a2a8b5a | 27 | |
6f2deb84 | 28 | #include "sd-daemon.h" |
81527be1 | 29 | |
4d1a6904 | 30 | #include "env-util.h" |
6482f626 | 31 | #include "formats-util.h" |
6f2deb84 | 32 | #include "log.h" |
07630cea | 33 | #include "string-util.h" |
6f2deb84 LP |
34 | #include "strv.h" |
35 | #include "util.h" | |
4a2a8b5a LP |
36 | |
37 | static bool arg_ready = false; | |
38 | static pid_t arg_pid = 0; | |
39 | static const char *arg_status = NULL; | |
96551bae | 40 | static bool arg_booted = false; |
4a2a8b5a | 41 | |
601185b4 | 42 | static void help(void) { |
2e33c433 | 43 | printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n" |
4a2a8b5a | 44 | "Notify the init system about service status updates.\n\n" |
b57b0625 ZJS |
45 | " -h --help Show this help\n" |
46 | " --version Show package version\n" | |
47 | " --ready Inform the init system about service start-up completion\n" | |
48 | " --pid[=PID] Set main pid of daemon\n" | |
49 | " --status=TEXT Set status text\n" | |
50 | " --booted Check if the system was booted up with systemd\n", | |
4a2a8b5a | 51 | program_invocation_short_name); |
4a2a8b5a LP |
52 | } |
53 | ||
54 | static int parse_argv(int argc, char *argv[]) { | |
55 | ||
56 | enum { | |
57 | ARG_READY = 0x100, | |
9aac0b2c | 58 | ARG_VERSION, |
4a2a8b5a | 59 | ARG_PID, |
96551bae | 60 | ARG_STATUS, |
6624768c | 61 | ARG_BOOTED, |
4a2a8b5a LP |
62 | }; |
63 | ||
64 | static const struct option options[] = { | |
6624768c | 65 | { "help", no_argument, NULL, 'h' }, |
9aac0b2c | 66 | { "version", no_argument, NULL, ARG_VERSION }, |
6624768c LP |
67 | { "ready", no_argument, NULL, ARG_READY }, |
68 | { "pid", optional_argument, NULL, ARG_PID }, | |
69 | { "status", required_argument, NULL, ARG_STATUS }, | |
70 | { "booted", no_argument, NULL, ARG_BOOTED }, | |
eb9da376 | 71 | {} |
4a2a8b5a LP |
72 | }; |
73 | ||
74 | int c; | |
75 | ||
76 | assert(argc >= 0); | |
77 | assert(argv); | |
78 | ||
ee8c4568 | 79 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) { |
4a2a8b5a LP |
80 | |
81 | switch (c) { | |
82 | ||
83 | case 'h': | |
601185b4 ZJS |
84 | help(); |
85 | return 0; | |
4a2a8b5a | 86 | |
9aac0b2c | 87 | case ARG_VERSION: |
3f6fd1ba | 88 | return version(); |
9aac0b2c | 89 | |
4a2a8b5a LP |
90 | case ARG_READY: |
91 | arg_ready = true; | |
92 | break; | |
93 | ||
94 | case ARG_PID: | |
95 | ||
96 | if (optarg) { | |
97 | if (parse_pid(optarg, &arg_pid) < 0) { | |
98 | log_error("Failed to parse PID %s.", optarg); | |
99 | return -EINVAL; | |
100 | } | |
101 | } else | |
102 | arg_pid = getppid(); | |
103 | ||
104 | break; | |
105 | ||
106 | case ARG_STATUS: | |
107 | arg_status = optarg; | |
108 | break; | |
109 | ||
96551bae LP |
110 | case ARG_BOOTED: |
111 | arg_booted = true; | |
112 | break; | |
113 | ||
4a2a8b5a LP |
114 | case '?': |
115 | return -EINVAL; | |
116 | ||
117 | default: | |
eb9da376 | 118 | assert_not_reached("Unhandled option"); |
4a2a8b5a | 119 | } |
ee8c4568 | 120 | } |
4a2a8b5a | 121 | |
2f02ce40 LP |
122 | if (optind >= argc && |
123 | !arg_ready && | |
124 | !arg_status && | |
125 | !arg_pid && | |
d6bc8348 | 126 | !arg_booted) { |
2f02ce40 LP |
127 | help(); |
128 | return -EINVAL; | |
129 | } | |
130 | ||
4a2a8b5a LP |
131 | return 1; |
132 | } | |
133 | ||
134 | int main(int argc, char* argv[]) { | |
be8f4e9e LP |
135 | _cleanup_free_ char *status = NULL, *cpid = NULL, *n = NULL; |
136 | _cleanup_strv_free_ char **final_env = NULL; | |
137 | char* our_env[4]; | |
4a2a8b5a | 138 | unsigned i = 0; |
be8f4e9e | 139 | int r; |
4a2a8b5a LP |
140 | |
141 | log_parse_environment(); | |
2396fb04 | 142 | log_open(); |
4a2a8b5a | 143 | |
6c12b52e | 144 | r = parse_argv(argc, argv); |
be8f4e9e | 145 | if (r <= 0) |
4a2a8b5a | 146 | goto finish; |
4a2a8b5a | 147 | |
96551bae LP |
148 | if (arg_booted) |
149 | return sd_booted() <= 0; | |
150 | ||
4a2a8b5a LP |
151 | if (arg_ready) |
152 | our_env[i++] = (char*) "READY=1"; | |
153 | ||
154 | if (arg_status) { | |
be8f4e9e LP |
155 | status = strappend("STATUS=", arg_status); |
156 | if (!status) { | |
157 | r = log_oom(); | |
4a2a8b5a LP |
158 | goto finish; |
159 | } | |
160 | ||
161 | our_env[i++] = status; | |
162 | } | |
163 | ||
164 | if (arg_pid > 0) { | |
de0671ee | 165 | if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0) { |
be8f4e9e | 166 | r = log_oom(); |
4a2a8b5a LP |
167 | goto finish; |
168 | } | |
169 | ||
170 | our_env[i++] = cpid; | |
171 | } | |
172 | ||
173 | our_env[i++] = NULL; | |
174 | ||
be8f4e9e LP |
175 | final_env = strv_env_merge(2, our_env, argv + optind); |
176 | if (!final_env) { | |
177 | r = log_oom(); | |
4a2a8b5a LP |
178 | goto finish; |
179 | } | |
180 | ||
181 | if (strv_length(final_env) <= 0) { | |
be8f4e9e | 182 | r = 0; |
4a2a8b5a LP |
183 | goto finish; |
184 | } | |
185 | ||
be8f4e9e LP |
186 | n = strv_join(final_env, "\n"); |
187 | if (!n) { | |
188 | r = log_oom(); | |
4a2a8b5a LP |
189 | goto finish; |
190 | } | |
191 | ||
9de009a9 | 192 | r = sd_pid_notify(arg_pid ? arg_pid : getppid(), false, n); |
be8f4e9e | 193 | if (r < 0) { |
da927ba9 | 194 | log_error_errno(r, "Failed to notify init system: %m"); |
4a2a8b5a | 195 | goto finish; |
39b50ad1 EV |
196 | } else if (r == 0) { |
197 | log_error("No status data could be sent: $NOTIFY_SOCKET was not set"); | |
15411c0c | 198 | r = -EOPNOTSUPP; |
39b50ad1 | 199 | } |
4a2a8b5a LP |
200 | |
201 | finish: | |
be8f4e9e | 202 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
4a2a8b5a | 203 | } |