1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 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-message.h"
32 #include "bus-internal.h"
35 static bool arg_no_pager = false;
36 static char *arg_address = NULL;
37 static bool arg_no_unique = false;
38 static char **arg_matches = NULL;
39 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
40 static char *arg_host = NULL;
41 static bool arg_user = false;
43 static void pager_open_if_enabled(void) {
45 /* Cache result before we open the pager */
52 static int list_bus_names(sd_bus *bus, char **argv) {
53 _cleanup_strv_free_ char **l = NULL;
60 r = sd_bus_list_names(bus, &l);
62 log_error("Failed to list names: %s", strerror(-r));
66 pager_open_if_enabled();
71 max_i = MAX(max_i, strlen(*i));
73 printf("%-*s %*s %-*s %-*s %-*s MACHINE\n",
74 (int) max_i, "NAME", 10, "PID", 15, "PROCESS", 16, "USER", 20, "CONNECTION");
77 _cleanup_free_ char *owner = NULL;
82 if (arg_no_unique && (*i)[0] == ':')
85 printf("%-*s", (int) max_i, *i);
87 r = sd_bus_get_owner_pid(bus, *i, &pid);
89 _cleanup_free_ char *comm = NULL;
91 printf(" %10lu", (unsigned long) pid);
93 get_process_comm(pid, &comm);
94 printf(" %-15s", strna(comm));
98 r = sd_bus_get_owner_uid(bus, *i, &uid);
100 _cleanup_free_ char *u = NULL;
102 u = uid_to_name(uid);
113 r = sd_bus_get_owner(bus, *i, &owner);
115 printf(" %-20s", owner);
119 r = sd_bus_get_owner_machine_id(bus, *i, &mid);
121 char m[SD_ID128_STRING_MAX];
122 printf(" %s\n", sd_id128_to_string(mid, m));
130 static int monitor(sd_bus *bus, char *argv[]) {
134 STRV_FOREACH(i, argv+1) {
135 _cleanup_free_ char *m = NULL;
137 if (!service_name_is_valid(*i)) {
138 log_error("Invalid service name '%s'", *i);
142 m = strjoin("sender='", *i, "'", NULL);
146 r = sd_bus_add_match(bus, m, NULL, NULL);
148 log_error("Failed to add match: %s", strerror(-r));
153 STRV_FOREACH(i, arg_matches) {
154 r = sd_bus_add_match(bus, *i, NULL, NULL);
156 log_error("Failed to add match: %s", strerror(-r));
162 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
164 r = sd_bus_process(bus, &m);
166 log_error("Failed to process bus: %s", strerror(-r));
171 bus_message_dump(m, stdout, true);
178 r = sd_bus_wait(bus, (uint64_t) -1);
180 log_error("Failed to wait for bus: %s", strerror(-r));
188 static int help(void) {
190 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
191 "Introspect the bus.\n\n"
192 " -h --help Show this help\n"
193 " --version Show package version\n"
194 " --no-pager Do not pipe output into a pager\n"
195 " --system Connect to system bus\n"
196 " --user Connect to user bus\n"
197 " -H --host=[USER@]HOST Operate on remote host\n"
198 " -M --machine=CONTAINER Operate on local container\n"
199 " --address=ADDRESS Connect to bus specified by address\n"
200 " --no-unique Only show well-known names\n"
201 " --match=MATCH Only show matching messages\n\n"
203 " list List bus names\n"
204 " monitor [SERVICE...] Show bus traffic\n",
205 program_invocation_short_name);
210 static int parse_argv(int argc, char *argv[]) {
222 static const struct option options[] = {
223 { "help", no_argument, NULL, 'h' },
224 { "version", no_argument, NULL, ARG_VERSION },
225 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
226 { "system", no_argument, NULL, ARG_SYSTEM },
227 { "user", no_argument, NULL, ARG_USER },
228 { "address", required_argument, NULL, ARG_ADDRESS },
229 { "no-unique", no_argument, NULL, ARG_NO_UNIQUE },
230 { "match", required_argument, NULL, ARG_MATCH },
231 { "host", required_argument, NULL, 'H' },
232 { "machine", required_argument, NULL, 'M' },
241 while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) {
249 puts(PACKAGE_STRING);
250 puts(SYSTEMD_FEATURES);
266 arg_address = optarg;
270 arg_no_unique = true;
274 if (strv_extend(&arg_matches, optarg) < 0)
279 arg_transport = BUS_TRANSPORT_REMOTE;
284 arg_transport = BUS_TRANSPORT_CONTAINER;
292 assert_not_reached("Unhandled option");
299 static int busctl_main(sd_bus *bus, int argc, char *argv[]) {
302 if (optind >= argc ||
303 streq(argv[optind], "list"))
304 return list_bus_names(bus, argv + optind);
306 if (streq(argv[optind], "monitor"))
307 return monitor(bus, argv + optind);
309 if (streq(argv[optind], "help"))
312 log_error("Unknown command '%s'", argv[optind]);
316 int main(int argc, char *argv[]) {
317 _cleanup_bus_unref_ sd_bus *bus = NULL;
320 log_parse_environment();
323 r = parse_argv(argc, argv);
328 r = sd_bus_new(&bus);
330 log_error("Failed to allocate bus: %s", strerror(-r));
334 r = sd_bus_set_address(bus, arg_address);
336 log_error("Failed to set address: %s", strerror(-r));
340 r = sd_bus_set_bus_client(bus, true);
342 log_error("Failed to set bus client: %s", strerror(-r));
346 r = sd_bus_start(bus);
348 r = bus_open_transport(arg_transport, arg_host, arg_user, &bus);
351 log_error("Failed to connect to bus: %s", strerror(-r));
355 r = busctl_main(bus, argc, argv);
360 strv_free(arg_matches);
362 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;