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/>.
30 #include "bus-error.h"
35 static const char* arg_what = "idle:sleep:shutdown";
36 static const char* arg_who = NULL;
37 static const char* arg_why = "Unknown reason";
38 static const char* arg_mode = NULL;
43 } arg_action = ACTION_INHIBIT;
45 static int inhibit(sd_bus *bus, sd_bus_error *error) {
46 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
50 r = sd_bus_call_method(
52 "org.freedesktop.login1",
53 "/org/freedesktop/login1",
54 "org.freedesktop.login1.Manager",
58 "ssss", arg_what, arg_who, arg_why, arg_mode);
62 r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
66 r = fcntl(fd, F_DUPFD_CLOEXEC, 3);
73 static int print_inhibitors(sd_bus *bus, sd_bus_error *error) {
74 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
75 const char *what, *who, *why, *mode;
76 unsigned int uid, pid;
80 r = sd_bus_call_method(
82 "org.freedesktop.login1",
83 "/org/freedesktop/login1",
84 "org.freedesktop.login1.Manager",
92 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
94 return bus_log_parse_error(r);
96 while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
97 _cleanup_free_ char *comm = NULL, *u = NULL;
99 if (arg_mode && !streq(mode, arg_mode))
102 get_process_comm(pid, &comm);
103 u = uid_to_name(uid);
105 printf(" Who: %s (UID "UID_FMT"/%s, PID "PID_FMT"/%s)\n"
109 who, uid, strna(u), pid, strna(comm),
117 return bus_log_parse_error(r);
119 r = sd_bus_message_exit_container(reply);
121 return bus_log_parse_error(r);
123 printf("%u inhibitors listed.\n", n);
127 static void 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);
143 static int parse_argv(int argc, char *argv[]) {
154 static const struct option options[] = {
155 { "help", no_argument, NULL, 'h' },
156 { "version", no_argument, NULL, ARG_VERSION },
157 { "what", required_argument, NULL, ARG_WHAT },
158 { "who", required_argument, NULL, ARG_WHO },
159 { "why", required_argument, NULL, ARG_WHY },
160 { "mode", required_argument, NULL, ARG_MODE },
161 { "list", no_argument, NULL, ARG_LIST },
170 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");
210 if (arg_action == ACTION_INHIBIT && optind == argc)
211 arg_action = ACTION_LIST;
213 else if (arg_action == ACTION_INHIBIT && optind >= argc) {
214 log_error("Missing command line to execute.");
221 int main(int argc, char *argv[]) {
222 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
223 _cleanup_bus_close_unref_ sd_bus *bus = NULL;
226 log_parse_environment();
229 r = parse_argv(argc, argv);
235 r = sd_bus_default_system(&bus);
237 log_error_errno(r, "Failed to connect to bus: %m");
241 if (arg_action == ACTION_LIST) {
243 r = print_inhibitors(bus, &error);
245 log_error("Failed to list inhibitors: %s", bus_error_message(&error, -r));
250 _cleanup_close_ int fd = -1;
251 _cleanup_free_ char *w = NULL;
255 arg_who = w = strv_join(argv + optind, " ");
260 fd = inhibit(bus, &error);
262 log_error("Failed to inhibit: %s", bus_error_message(&error, fd));
268 log_error_errno(errno, "Failed to fork: %m");
275 close_all_fds(NULL, 0);
277 execvp(argv[optind], argv + optind);
278 log_error_errno(errno, "Failed to execute %s: %m", argv[optind]);
282 r = wait_for_terminate_and_warn(argv[optind], pid, true);
283 return r < 0 ? EXIT_FAILURE : r;