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/>.
29 #include "dbus-common.h"
34 static const char* arg_what = "idle:sleep:shutdown";
35 static const char* arg_who = NULL;
36 static const char* arg_why = "Unknown reason";
37 static const char* arg_mode = "block";
42 } arg_action = ACTION_INHIBIT;
44 static int inhibit(DBusConnection *bus, DBusError *error) {
45 DBusMessage *reply = NULL;
48 r = bus_method_call_with_reply(
50 "org.freedesktop.login1",
51 "/org/freedesktop/login1",
52 "org.freedesktop.login1.Manager",
56 DBUS_TYPE_STRING, &arg_what,
57 DBUS_TYPE_STRING, &arg_who,
58 DBUS_TYPE_STRING, &arg_why,
59 DBUS_TYPE_STRING, &arg_mode,
64 if (!dbus_message_get_args(reply, error,
65 DBUS_TYPE_UNIX_FD, &r,
69 dbus_message_unref(reply);
74 static int print_inhibitors(DBusConnection *bus, DBusError *error) {
75 DBusMessage *reply = NULL;
77 DBusMessageIter iter, sub, sub2;
80 r = bus_method_call_with_reply(
82 "org.freedesktop.login1",
83 "/org/freedesktop/login1",
84 "org.freedesktop.login1.Manager",
92 if (!dbus_message_iter_init(reply, &iter)) {
97 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) {
102 printf("%-21s %-20s %-20s %-5s %6s %6s\n",
110 dbus_message_iter_recurse(&iter, &sub);
111 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
112 const char *what, *who, *why, *mode;
114 dbus_uint32_t uid, pid;
116 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
121 dbus_message_iter_recurse(&sub, &sub2);
123 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &what, true) < 0 ||
124 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &who, true) < 0 ||
125 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &why, true) < 0 ||
126 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &mode, true) < 0 ||
127 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &uid, true) < 0 ||
128 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, false) < 0) {
133 ewho = ellipsize(who, 20, 66);
134 ewhy = ellipsize(why, 20, 66);
136 printf("%-21s %-20s %-20s %-5s %6lu %6lu\n",
137 what, ewho ? ewho : who, ewhy ? ewhy : why, mode, (unsigned long) uid, (unsigned long) pid);
142 dbus_message_iter_next(&sub);
147 printf("\n%u inhibitors listed.\n", n);
152 dbus_message_unref(reply);
157 static int help(void) {
159 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
160 "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
161 " -h --help Show this help\n"
162 " --version Show package version\n"
163 " --what=WHAT Operations to inhibit, colon separated list of idle,\n"
165 " --who=STRING A descriptive string who is inhibiting\n"
166 " --why=STRING A descriptive string why is being inhibited\n"
167 " --mode=MODE One of block or delay\n"
168 " --list List active inhibitors\n",
169 program_invocation_short_name);
174 static int parse_argv(int argc, char *argv[]) {
185 static const struct option options[] = {
186 { "help", no_argument, NULL, 'h' },
187 { "version", no_argument, NULL, ARG_VERSION },
188 { "what", required_argument, NULL, ARG_WHAT },
189 { "who", required_argument, NULL, ARG_WHO },
190 { "why", required_argument, NULL, ARG_WHY },
191 { "mode", required_argument, NULL, ARG_MODE },
192 { "list", no_argument, NULL, ARG_LIST },
201 while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) {
210 puts(PACKAGE_STRING);
212 puts(SYSTEMD_FEATURES);
232 arg_action = ACTION_LIST;
236 log_error("Unknown option code %c", c);
241 if (arg_action == ACTION_INHIBIT && optind >= argc) {
242 log_error("Missing command line to execute.");
249 int main(int argc, char *argv[]) {
250 int r, exit_code = 0;
251 DBusConnection *bus = NULL;
255 dbus_error_init(&error);
257 log_parse_environment();
260 r = parse_argv(argc, argv);
264 bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
266 log_error("Failed to connect to bus: %s", bus_error_message(&error));
271 if (arg_action == ACTION_LIST) {
273 r = print_inhibitors(bus, &error);
275 log_error("Failed to list inhibitors: %s", bus_error_message_or_strerror(&error, -r));
284 arg_who = w = strv_join(argv + optind, " ");
286 fd = inhibit(bus, &error);
290 log_error("Failed to inhibit: %s", bus_error_message_or_strerror(&error, -r));
297 log_error("Failed to fork: %m");
305 close_nointr_nofail(fd);
306 close_all_fds(NULL, 0);
308 execvp(argv[optind], argv + optind);
309 log_error("Failed to execute %s: %m", argv[optind]);
313 r = wait_for_terminate_and_warn(argv[optind], pid);
320 dbus_connection_close(bus);
321 dbus_connection_unref(bus);
324 dbus_error_free(&error);
327 close_nointr_nofail(fd);
329 return r < 0 ? EXIT_FAILURE : exit_code;