1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/***
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;
}
|
