2 This file is part of systemd.
4 Copyright 2012 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
28 #include "alloc-util.h"
29 #include "bus-error.h"
32 #include "formats-util.h"
33 #include "process-util.h"
34 #include "signal-util.h"
36 #include "user-util.h"
39 static const char* arg_what
= "idle:sleep:shutdown";
40 static const char* arg_who
= NULL
;
41 static const char* arg_why
= "Unknown reason";
42 static const char* arg_mode
= NULL
;
47 } arg_action
= ACTION_INHIBIT
;
49 static int inhibit(sd_bus
*bus
, sd_bus_error
*error
) {
50 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
54 r
= sd_bus_call_method(
56 "org.freedesktop.login1",
57 "/org/freedesktop/login1",
58 "org.freedesktop.login1.Manager",
62 "ssss", arg_what
, arg_who
, arg_why
, arg_mode
);
66 r
= sd_bus_message_read_basic(reply
, SD_BUS_TYPE_UNIX_FD
, &fd
);
70 r
= fcntl(fd
, F_DUPFD_CLOEXEC
, 3);
77 static int print_inhibitors(sd_bus
*bus
, sd_bus_error
*error
) {
78 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
79 const char *what
, *who
, *why
, *mode
;
80 unsigned int uid
, pid
;
84 r
= sd_bus_call_method(
86 "org.freedesktop.login1",
87 "/org/freedesktop/login1",
88 "org.freedesktop.login1.Manager",
96 r
= sd_bus_message_enter_container(reply
, SD_BUS_TYPE_ARRAY
, "(ssssuu)");
98 return bus_log_parse_error(r
);
100 while ((r
= sd_bus_message_read(reply
, "(ssssuu)", &what
, &who
, &why
, &mode
, &uid
, &pid
)) > 0) {
101 _cleanup_free_
char *comm
= NULL
, *u
= NULL
;
103 if (arg_mode
&& !streq(mode
, arg_mode
))
106 get_process_comm(pid
, &comm
);
107 u
= uid_to_name(uid
);
109 printf(" Who: %s (UID "UID_FMT
"/%s, PID "PID_FMT
"/%s)\n"
113 who
, uid
, strna(u
), pid
, strna(comm
),
121 return bus_log_parse_error(r
);
123 r
= sd_bus_message_exit_container(reply
);
125 return bus_log_parse_error(r
);
127 printf("%u inhibitors listed.\n", n
);
131 static void help(void) {
132 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
133 "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
134 " -h --help Show this help\n"
135 " --version Show package version\n"
136 " --what=WHAT Operations to inhibit, colon separated list of:\n"
137 " shutdown, sleep, idle, handle-power-key,\n"
138 " handle-suspend-key, handle-hibernate-key,\n"
139 " handle-lid-switch\n"
140 " --who=STRING A descriptive string who is inhibiting\n"
141 " --why=STRING A descriptive string why is being inhibited\n"
142 " --mode=MODE One of block or delay\n"
143 " --list List active inhibitors\n"
144 , program_invocation_short_name
);
147 static int parse_argv(int argc
, char *argv
[]) {
158 static const struct option options
[] = {
159 { "help", no_argument
, NULL
, 'h' },
160 { "version", no_argument
, NULL
, ARG_VERSION
},
161 { "what", required_argument
, NULL
, ARG_WHAT
},
162 { "who", required_argument
, NULL
, ARG_WHO
},
163 { "why", required_argument
, NULL
, ARG_WHY
},
164 { "mode", required_argument
, NULL
, ARG_MODE
},
165 { "list", no_argument
, NULL
, ARG_LIST
},
174 while ((c
= getopt_long(argc
, argv
, "+h", options
, NULL
)) >= 0)
202 arg_action
= ACTION_LIST
;
209 assert_not_reached("Unhandled option");
212 if (arg_action
== ACTION_INHIBIT
&& optind
== argc
)
213 arg_action
= ACTION_LIST
;
215 else if (arg_action
== ACTION_INHIBIT
&& optind
>= argc
) {
216 log_error("Missing command line to execute.");
223 int main(int argc
, char *argv
[]) {
224 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
225 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
228 log_parse_environment();
231 r
= parse_argv(argc
, argv
);
237 r
= sd_bus_default_system(&bus
);
239 log_error_errno(r
, "Failed to connect to bus: %m");
243 if (arg_action
== ACTION_LIST
) {
245 r
= print_inhibitors(bus
, &error
);
247 log_error("Failed to list inhibitors: %s", bus_error_message(&error
, -r
));
252 _cleanup_close_
int fd
= -1;
253 _cleanup_free_
char *w
= NULL
;
257 arg_who
= w
= strv_join(argv
+ optind
, " ");
262 fd
= inhibit(bus
, &error
);
264 log_error("Failed to inhibit: %s", bus_error_message(&error
, fd
));
270 log_error_errno(errno
, "Failed to fork: %m");
277 (void) reset_all_signal_handlers();
278 (void) reset_signal_mask();
280 close_all_fds(NULL
, 0);
282 execvp(argv
[optind
], argv
+ optind
);
283 log_error_errno(errno
, "Failed to execute %s: %m", argv
[optind
]);
287 r
= wait_for_terminate_and_warn(argv
[optind
], pid
, true);
288 return r
< 0 ? EXIT_FAILURE
: r
;