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/>.
31 #include "bus-error.h"
36 static const char* arg_what = "idle:sleep:shutdown";
37 static const char* arg_who = NULL;
38 static const char* arg_why = "Unknown reason";
39 static const char* arg_mode = "block";
44 } arg_action = ACTION_INHIBIT;
46 static int inhibit(sd_bus *bus, sd_bus_error *error) {
47 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
51 r = sd_bus_call_method(
53 "org.freedesktop.login1",
54 "/org/freedesktop/login1",
55 "org.freedesktop.login1.Manager",
59 "ssss", arg_what, arg_who, arg_why, arg_mode);
63 r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
67 r = fcntl(fd, F_DUPFD_CLOEXEC, 3);
74 static int print_inhibitors(sd_bus *bus, sd_bus_error *error) {
75 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
76 const char *what, *who, *why, *mode;
77 unsigned int uid, pid;
81 r = sd_bus_call_method(
83 "org.freedesktop.login1",
84 "/org/freedesktop/login1",
85 "org.freedesktop.login1.Manager",
93 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
95 return bus_log_parse_error(r);
97 while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
98 _cleanup_free_ char *comm = NULL, *u = NULL;
100 get_process_comm(pid, &comm);
101 u = uid_to_name(uid);
103 printf(" Who: %s (UID "UID_FMT"/%s, PID "PID_FMT"/%s)\n"
107 who, uid, strna(u), pid, strna(comm),
115 return bus_log_parse_error(r);
117 r = sd_bus_message_exit_container(reply);
119 return bus_log_parse_error(r);
121 printf("%u inhibitors listed.\n", n);
125 static int help(void) {
127 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
128 "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
129 " -h --help Show this help\n"
130 " --version Show package version\n"
131 " --what=WHAT Operations to inhibit, colon separated list of:\n"
132 " shutdown, sleep, idle, handle-power-key,\n"
133 " handle-suspend-key, handle-hibernate-key,\n"
134 " handle-lid-switch\n"
135 " --who=STRING A descriptive string who is inhibiting\n"
136 " --why=STRING A descriptive string why is being inhibited\n"
137 " --mode=MODE One of block or delay\n"
138 " --list List active inhibitors\n",
139 program_invocation_short_name);
144 static int parse_argv(int argc, char *argv[]) {
155 static const struct option options[] = {
156 { "help", no_argument, NULL, 'h' },
157 { "version", no_argument, NULL, ARG_VERSION },
158 { "what", required_argument, NULL, ARG_WHAT },
159 { "who", required_argument, NULL, ARG_WHO },
160 { "why", required_argument, NULL, ARG_WHY },
161 { "mode", required_argument, NULL, ARG_MODE },
162 { "list", no_argument, NULL, ARG_LIST },
171 while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) {
179 puts(PACKAGE_STRING);
180 puts(SYSTEMD_FEATURES);
200 arg_action = ACTION_LIST;
207 assert_not_reached("Unhandled option");
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);
236 r = sd_bus_default_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));
251 _cleanup_close_ int fd = -1;
252 _cleanup_free_ char *w = NULL;
256 arg_who = w = strv_join(argv + optind, " ");
258 fd = inhibit(bus, &error);
260 log_error("Failed to inhibit: %s", bus_error_message(&error, -r));
266 log_error("Failed to fork: %m");
273 close_all_fds(NULL, 0);
275 execvp(argv[optind], argv + optind);
276 log_error("Failed to execute %s: %m", argv[optind]);
280 r = wait_for_terminate_and_warn(argv[optind], pid);
281 return r < 0 ? EXIT_FAILURE : r;