1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
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
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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
32 #include "bus-error.h"
37 static const char* arg_what = "idle:sleep:shutdown";
38 static const char* arg_who = NULL;
39 static const char* arg_why = "Unknown reason";
40 static const char* arg_mode = "block";
45 } arg_action = ACTION_INHIBIT;
47 static int inhibit(sd_bus *bus, sd_bus_error *error) {
48 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
52 r = sd_bus_call_method(
54 "org.freedesktop.login1",
55 "/org/freedesktop/login1",
56 "org.freedesktop.login1.Manager",
60 "ssss", arg_what, arg_who, arg_why, arg_mode);
64 r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
75 static int print_inhibitors(sd_bus *bus, sd_bus_error *error) {
76 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
77 const char *what, *who, *why, *mode;
78 unsigned int uid, pid;
82 r = sd_bus_call_method(
84 "org.freedesktop.login1",
85 "/org/freedesktop/login1",
86 "org.freedesktop.login1.Manager",
94 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
98 while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
99 _cleanup_free_ char *comm = NULL, *u = NULL;
101 get_process_comm(pid, &comm);
102 u = uid_to_name(uid);
104 printf(" Who: %s (UID %lu/%s, PID %lu/%s)\n"
108 who, (unsigned long) uid, strna(u), (unsigned long) pid, strna(comm),
118 r = sd_bus_message_exit_container(reply);
122 printf("%u inhibitors listed.\n", n);
126 static int help(void) {
128 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
129 "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
130 " -h --help Show this help\n"
131 " --version Show package version\n"
132 " --what=WHAT Operations to inhibit, colon separated list of:\n"
133 " shutdown, sleep, idle, handle-power-key,\n"
134 " handle-suspend-key, handle-hibernate-key,\n"
135 " handle-lid-switch\n"
136 " --who=STRING A descriptive string who is inhibiting\n"
137 " --why=STRING A descriptive string why is being inhibited\n"
138 " --mode=MODE One of block or delay\n"
139 " --list List active inhibitors\n",
140 program_invocation_short_name);
145 static int parse_argv(int argc, char *argv[]) {
156 static const struct option options[] = {
157 { "help", no_argument, NULL, 'h' },
158 { "version", no_argument, NULL, ARG_VERSION },
159 { "what", required_argument, NULL, ARG_WHAT },
160 { "who", required_argument, NULL, ARG_WHO },
161 { "why", required_argument, NULL, ARG_WHY },
162 { "mode", required_argument, NULL, ARG_MODE },
163 { "list", no_argument, NULL, ARG_LIST },
172 while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) {
181 puts(PACKAGE_STRING);
182 puts(SYSTEMD_FEATURES);
202 arg_action = ACTION_LIST;
206 log_error("Unknown option code %c", c);
211 if (arg_action == ACTION_INHIBIT && argc == 1)
212 arg_action = ACTION_LIST;
214 else if (arg_action == ACTION_INHIBIT && optind >= argc) {
215 log_error("Missing command line to execute.");
222 int main(int argc, char *argv[]) {
223 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
224 _cleanup_bus_unref_ sd_bus *bus = NULL;
227 log_parse_environment();
230 r = parse_argv(argc, argv);
234 r = sd_bus_open_system(&bus);
236 log_error("Failed to connect to bus: %s", strerror(-r));
240 if (arg_action == ACTION_LIST) {
242 r = print_inhibitors(bus, &error);
244 log_error("Failed to list inhibitors: %s", bus_error_message(&error, -r));
249 _cleanup_close_ int fd = -1;
250 _cleanup_free_ char *w = NULL;
254 arg_who = w = strv_join(argv + optind, " ");
256 fd = inhibit(bus, &error);
258 log_error("Failed to inhibit: %s", bus_error_message(&error, -r));
264 log_error("Failed to fork: %m");
271 close_all_fds(NULL, 0);
273 execvp(argv[optind], argv + optind);
274 log_error("Failed to execute %s: %m", argv[optind]);
278 r = wait_for_terminate_and_warn(argv[optind], pid);
279 return r < 0 ? EXIT_FAILURE : r;