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;
102 get_process_comm(pid, &comm);
103 u = uid_to_name(uid);
105 printf(" Who: %s (UID %lu/%s, PID %lu/%s)\n"
109 who, (unsigned long) uid, strna(u), (unsigned long) pid, strna(comm),
119 r = sd_bus_message_exit_container(reply);
123 printf("%u inhibitors listed.\n", n);
127 static int help(void) {
129 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
130 "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
131 " -h --help Show this help\n"
132 " --version Show package version\n"
133 " --what=WHAT Operations to inhibit, colon separated list of:\n"
134 " shutdown, sleep, idle, handle-power-key,\n"
135 " handle-suspend-key, handle-hibernate-key,\n"
136 " handle-lid-switch\n"
137 " --who=STRING A descriptive string who is inhibiting\n"
138 " --why=STRING A descriptive string why is being inhibited\n"
139 " --mode=MODE One of block or delay\n"
140 " --list List active inhibitors\n",
141 program_invocation_short_name);
146 static int parse_argv(int argc, char *argv[]) {
157 static const struct option options[] = {
158 { "help", no_argument, NULL, 'h' },
159 { "version", no_argument, NULL, ARG_VERSION },
160 { "what", required_argument, NULL, ARG_WHAT },
161 { "who", required_argument, NULL, ARG_WHO },
162 { "why", required_argument, NULL, ARG_WHY },
163 { "mode", required_argument, NULL, ARG_MODE },
164 { "list", no_argument, NULL, ARG_LIST },
173 while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) {
182 puts(PACKAGE_STRING);
183 puts(SYSTEMD_FEATURES);
203 arg_action = ACTION_LIST;
207 log_error("Unknown option code %c", c);
212 if (arg_action == ACTION_INHIBIT && argc == 1)
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[]) {
225 _cleanup_bus_unref_ sd_bus *bus = NULL;
226 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
229 log_parse_environment();
232 r = parse_argv(argc, argv);
236 r = sd_bus_open_system(&bus);
238 log_error("Failed to connect to bus: %s", strerror(-r));
242 if (arg_action == ACTION_LIST) {
244 r = print_inhibitors(bus, &error);
246 log_error("Failed to list inhibitors: %s", bus_error_message(&error, -r));
255 arg_who = w = strv_join(argv + optind, " ");
257 fd = inhibit(bus, &error);
261 log_error("Failed to inhibit: %s", bus_error_message(&error, -r));
267 log_error("Failed to fork: %m");
274 close_all_fds(NULL, 0);
276 execvp(argv[optind], argv + optind);
277 log_error("Failed to execute %s: %m", argv[optind]);
281 r = wait_for_terminate_and_warn(argv[optind], pid);