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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
eecd1362 | 2 | /*** |
eecd1362 | 3 | Copyright 2012 Lennart Poettering |
eecd1362 LP |
4 | ***/ |
5 | ||
3f6fd1ba | 6 | #include <fcntl.h> |
eecd1362 | 7 | #include <getopt.h> |
eecd1362 | 8 | #include <stdio.h> |
3f6fd1ba | 9 | #include <stdlib.h> |
eecd1362 LP |
10 | #include <unistd.h> |
11 | ||
0fb0c56f | 12 | #include "sd-bus.h" |
3f6fd1ba | 13 | |
b5efdb8a | 14 | #include "alloc-util.h" |
0fb0c56f | 15 | #include "bus-error.h" |
3f6fd1ba | 16 | #include "bus-util.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
f97b34a6 | 18 | #include "format-util.h" |
f3c9133c | 19 | #include "pager.h" |
0b452006 | 20 | #include "process-util.h" |
ce30c8dc | 21 | #include "signal-util.h" |
3f6fd1ba | 22 | #include "strv.h" |
b1d4f8e1 | 23 | #include "user-util.h" |
3f6fd1ba | 24 | #include "util.h" |
eecd1362 | 25 | |
4943c1c9 | 26 | static const char* arg_what = "idle:sleep:shutdown"; |
eecd1362 LP |
27 | static const char* arg_who = NULL; |
28 | static const char* arg_why = "Unknown reason"; | |
ca5447c0 | 29 | static const char* arg_mode = NULL; |
f3c9133c | 30 | static bool arg_no_pager = false; |
eecd1362 LP |
31 | |
32 | static enum { | |
33 | ACTION_INHIBIT, | |
34 | ACTION_LIST | |
35 | } arg_action = ACTION_INHIBIT; | |
36 | ||
0fb0c56f | 37 | static int inhibit(sd_bus *bus, sd_bus_error *error) { |
4afd3348 | 38 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
3137e0bd | 39 | int r; |
0fb0c56f | 40 | int fd; |
eecd1362 | 41 | |
0fb0c56f | 42 | r = sd_bus_call_method( |
b9c26b41 | 43 | bus, |
eecd1362 LP |
44 | "org.freedesktop.login1", |
45 | "/org/freedesktop/login1", | |
46 | "org.freedesktop.login1.Manager", | |
b9c26b41 | 47 | "Inhibit", |
0fb0c56f | 48 | error, |
b9c26b41 | 49 | &reply, |
0fb0c56f | 50 | "ssss", arg_what, arg_who, arg_why, arg_mode); |
3137e0bd LP |
51 | if (r < 0) |
52 | return r; | |
eecd1362 | 53 | |
0fb0c56f TG |
54 | r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd); |
55 | if (r < 0) | |
5b30bef8 | 56 | return r; |
eecd1362 | 57 | |
ead34950 | 58 | r = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
0fb0c56f TG |
59 | if (r < 0) |
60 | return -errno; | |
61 | ||
3137e0bd | 62 | return r; |
eecd1362 LP |
63 | } |
64 | ||
0fb0c56f | 65 | static int print_inhibitors(sd_bus *bus, sd_bus_error *error) { |
4afd3348 | 66 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
0fb0c56f TG |
67 | const char *what, *who, *why, *mode; |
68 | unsigned int uid, pid; | |
eecd1362 | 69 | unsigned n = 0; |
eecd1362 LP |
70 | int r; |
71 | ||
f3c9133c DT |
72 | (void) pager_open(arg_no_pager, false); |
73 | ||
0fb0c56f | 74 | r = sd_bus_call_method( |
b9c26b41 | 75 | bus, |
eecd1362 LP |
76 | "org.freedesktop.login1", |
77 | "/org/freedesktop/login1", | |
78 | "org.freedesktop.login1.Manager", | |
b9c26b41 | 79 | "ListInhibitors", |
0fb0c56f | 80 | error, |
b9c26b41 | 81 | &reply, |
0fb0c56f | 82 | ""); |
3137e0bd | 83 | if (r < 0) |
4654e558 | 84 | return r; |
eecd1362 | 85 | |
0fb0c56f TG |
86 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)"); |
87 | if (r < 0) | |
40be0704 | 88 | return bus_log_parse_error(r); |
eecd1362 | 89 | |
0fb0c56f | 90 | while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) { |
391a4f72 | 91 | _cleanup_free_ char *comm = NULL, *u = NULL; |
eecd1362 | 92 | |
ca5447c0 MM |
93 | if (arg_mode && !streq(mode, arg_mode)) |
94 | continue; | |
95 | ||
391a4f72 LP |
96 | get_process_comm(pid, &comm); |
97 | u = uid_to_name(uid); | |
98 | ||
de0671ee | 99 | printf(" Who: %s (UID "UID_FMT"/%s, PID "PID_FMT"/%s)\n" |
41330ddb MM |
100 | " What: %s\n" |
101 | " Why: %s\n" | |
102 | " Mode: %s\n\n", | |
de0671ee | 103 | who, uid, strna(u), pid, strna(comm), |
41330ddb MM |
104 | what, |
105 | why, | |
106 | mode); | |
eecd1362 | 107 | |
eecd1362 LP |
108 | n++; |
109 | } | |
0fb0c56f | 110 | if (r < 0) |
40be0704 | 111 | return bus_log_parse_error(r); |
0fb0c56f TG |
112 | |
113 | r = sd_bus_message_exit_container(reply); | |
114 | if (r < 0) | |
40be0704 | 115 | return bus_log_parse_error(r); |
eecd1362 | 116 | |
41330ddb | 117 | printf("%u inhibitors listed.\n", n); |
4654e558 | 118 | return 0; |
eecd1362 LP |
119 | } |
120 | ||
601185b4 | 121 | static void help(void) { |
eecd1362 | 122 | printf("%s [OPTIONS...] {COMMAND} ...\n\n" |
4943c1c9 | 123 | "Execute a process while inhibiting shutdown/sleep/idle.\n\n" |
eecd1362 LP |
124 | " -h --help Show this help\n" |
125 | " --version Show package version\n" | |
f3c9133c | 126 | " --no-pager Do not pipe output into a pager\n" |
12a1309e LP |
127 | " --what=WHAT Operations to inhibit, colon separated list of:\n" |
128 | " shutdown, sleep, idle, handle-power-key,\n" | |
2f1bb513 СНА |
129 | " handle-suspend-key, handle-hibernate-key,\n" |
130 | " handle-lid-switch\n" | |
eecd1362 LP |
131 | " --who=STRING A descriptive string who is inhibiting\n" |
132 | " --why=STRING A descriptive string why is being inhibited\n" | |
133 | " --mode=MODE One of block or delay\n" | |
601185b4 ZJS |
134 | " --list List active inhibitors\n" |
135 | , program_invocation_short_name); | |
eecd1362 LP |
136 | } |
137 | ||
138 | static int parse_argv(int argc, char *argv[]) { | |
139 | ||
140 | enum { | |
141 | ARG_VERSION = 0x100, | |
142 | ARG_WHAT, | |
143 | ARG_WHO, | |
144 | ARG_WHY, | |
145 | ARG_MODE, | |
146 | ARG_LIST, | |
f3c9133c | 147 | ARG_NO_PAGER, |
eecd1362 LP |
148 | }; |
149 | ||
150 | static const struct option options[] = { | |
151 | { "help", no_argument, NULL, 'h' }, | |
152 | { "version", no_argument, NULL, ARG_VERSION }, | |
153 | { "what", required_argument, NULL, ARG_WHAT }, | |
154 | { "who", required_argument, NULL, ARG_WHO }, | |
155 | { "why", required_argument, NULL, ARG_WHY }, | |
156 | { "mode", required_argument, NULL, ARG_MODE }, | |
157 | { "list", no_argument, NULL, ARG_LIST }, | |
f3c9133c | 158 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
eb9da376 | 159 | {} |
eecd1362 LP |
160 | }; |
161 | ||
162 | int c; | |
163 | ||
164 | assert(argc >= 0); | |
165 | assert(argv); | |
166 | ||
601185b4 | 167 | while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) |
eecd1362 LP |
168 | |
169 | switch (c) { | |
170 | ||
171 | case 'h': | |
601185b4 ZJS |
172 | help(); |
173 | return 0; | |
eecd1362 LP |
174 | |
175 | case ARG_VERSION: | |
3f6fd1ba | 176 | return version(); |
eecd1362 LP |
177 | |
178 | case ARG_WHAT: | |
179 | arg_what = optarg; | |
180 | break; | |
181 | ||
182 | case ARG_WHO: | |
183 | arg_who = optarg; | |
184 | break; | |
185 | ||
186 | case ARG_WHY: | |
187 | arg_why = optarg; | |
188 | break; | |
189 | ||
190 | case ARG_MODE: | |
191 | arg_mode = optarg; | |
192 | break; | |
193 | ||
194 | case ARG_LIST: | |
195 | arg_action = ACTION_LIST; | |
196 | break; | |
197 | ||
f3c9133c DT |
198 | case ARG_NO_PAGER: |
199 | arg_no_pager = true; | |
200 | break; | |
201 | ||
eb9da376 | 202 | case '?': |
eecd1362 | 203 | return -EINVAL; |
eb9da376 LP |
204 | |
205 | default: | |
206 | assert_not_reached("Unhandled option"); | |
eecd1362 | 207 | } |
eecd1362 | 208 | |
d9130355 | 209 | if (arg_action == ACTION_INHIBIT && optind == argc) |
2f2343c6 KS |
210 | arg_action = ACTION_LIST; |
211 | ||
212 | else if (arg_action == ACTION_INHIBIT && optind >= argc) { | |
eecd1362 LP |
213 | log_error("Missing command line to execute."); |
214 | return -EINVAL; | |
215 | } | |
216 | ||
217 | return 1; | |
218 | } | |
219 | ||
220 | int main(int argc, char *argv[]) { | |
4afd3348 LP |
221 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
222 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
5220a6f3 | 223 | int r; |
eecd1362 LP |
224 | |
225 | log_parse_environment(); | |
226 | log_open(); | |
227 | ||
228 | r = parse_argv(argc, argv); | |
45a7c6b5 | 229 | if (r < 0) |
0fb0c56f | 230 | return EXIT_FAILURE; |
45a7c6b5 LP |
231 | if (r == 0) |
232 | return EXIT_SUCCESS; | |
eecd1362 | 233 | |
76b54375 | 234 | r = sd_bus_default_system(&bus); |
0fb0c56f | 235 | if (r < 0) { |
da927ba9 | 236 | log_error_errno(r, "Failed to connect to bus: %m"); |
0fb0c56f | 237 | return EXIT_FAILURE; |
eecd1362 LP |
238 | } |
239 | ||
240 | if (arg_action == ACTION_LIST) { | |
241 | ||
242 | r = print_inhibitors(bus, &error); | |
f3c9133c | 243 | pager_close(); |
eecd1362 | 244 | if (r < 0) { |
0fb0c56f TG |
245 | log_error("Failed to list inhibitors: %s", bus_error_message(&error, -r)); |
246 | return EXIT_FAILURE; | |
eecd1362 LP |
247 | } |
248 | ||
249 | } else { | |
5220a6f3 LP |
250 | _cleanup_close_ int fd = -1; |
251 | _cleanup_free_ char *w = NULL; | |
eecd1362 LP |
252 | pid_t pid; |
253 | ||
106f12a0 CH |
254 | /* Ignore SIGINT and allow the forked process to receive it */ |
255 | (void) ignore_signals(SIGINT, -1); | |
256 | ||
eecd1362 LP |
257 | if (!arg_who) |
258 | arg_who = w = strv_join(argv + optind, " "); | |
259 | ||
ca5447c0 MM |
260 | if (!arg_mode) |
261 | arg_mode = "block"; | |
262 | ||
eecd1362 | 263 | fd = inhibit(bus, &error); |
eecd1362 | 264 | if (fd < 0) { |
dcee0112 | 265 | log_error("Failed to inhibit: %s", bus_error_message(&error, fd)); |
0fb0c56f | 266 | return EXIT_FAILURE; |
eecd1362 LP |
267 | } |
268 | ||
b6e1fff1 LP |
269 | r = safe_fork("(inhibit)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_CLOSE_ALL_FDS|FORK_LOG, &pid); |
270 | if (r < 0) | |
0fb0c56f | 271 | return EXIT_FAILURE; |
4c253ed1 | 272 | if (r == 0) { |
eecd1362 | 273 | /* Child */ |
eecd1362 | 274 | execvp(argv[optind], argv + optind); |
0b1f3c76 | 275 | log_open(); |
56f64d95 | 276 | log_error_errno(errno, "Failed to execute %s: %m", argv[optind]); |
eecd1362 LP |
277 | _exit(EXIT_FAILURE); |
278 | } | |
279 | ||
7d4904fe | 280 | r = wait_for_terminate_and_check(argv[optind], pid, WAIT_LOG); |
5220a6f3 | 281 | return r < 0 ? EXIT_FAILURE : r; |
eecd1362 LP |
282 | } |
283 | ||
4c0e48f9 | 284 | return EXIT_SUCCESS; |
eecd1362 | 285 | } |