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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
eecd1362 | 2 | |
3f6fd1ba | 3 | #include <fcntl.h> |
eecd1362 | 4 | #include <getopt.h> |
eecd1362 | 5 | #include <stdio.h> |
3f6fd1ba | 6 | #include <stdlib.h> |
eecd1362 LP |
7 | #include <unistd.h> |
8 | ||
0fb0c56f | 9 | #include "sd-bus.h" |
3f6fd1ba | 10 | |
b5efdb8a | 11 | #include "alloc-util.h" |
0fb0c56f | 12 | #include "bus-error.h" |
3f6fd1ba | 13 | #include "bus-util.h" |
3ffd4af2 | 14 | #include "fd-util.h" |
a9426617 | 15 | #include "format-table.h" |
f97b34a6 | 16 | #include "format-util.h" |
5e332028 | 17 | #include "main-func.h" |
f3c9133c | 18 | #include "pager.h" |
294bf0c3 | 19 | #include "pretty-print.h" |
0b452006 | 20 | #include "process-util.h" |
ce30c8dc | 21 | #include "signal-util.h" |
3f6fd1ba | 22 | #include "strv.h" |
353b2baa | 23 | #include "terminal-util.h" |
b1d4f8e1 | 24 | #include "user-util.h" |
3f6fd1ba | 25 | #include "util.h" |
eecd1362 | 26 | |
4943c1c9 | 27 | static const char* arg_what = "idle:sleep:shutdown"; |
eecd1362 LP |
28 | static const char* arg_who = NULL; |
29 | static const char* arg_why = "Unknown reason"; | |
ca5447c0 | 30 | static const char* arg_mode = NULL; |
0221d68a | 31 | static PagerFlags arg_pager_flags = 0; |
a9426617 | 32 | static bool arg_legend = true; |
eecd1362 LP |
33 | |
34 | static enum { | |
35 | ACTION_INHIBIT, | |
36 | ACTION_LIST | |
37 | } arg_action = ACTION_INHIBIT; | |
38 | ||
0fb0c56f | 39 | static int inhibit(sd_bus *bus, sd_bus_error *error) { |
4afd3348 | 40 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
3137e0bd | 41 | int r; |
0fb0c56f | 42 | int fd; |
eecd1362 | 43 | |
0fb0c56f | 44 | r = sd_bus_call_method( |
b9c26b41 | 45 | bus, |
eecd1362 LP |
46 | "org.freedesktop.login1", |
47 | "/org/freedesktop/login1", | |
48 | "org.freedesktop.login1.Manager", | |
b9c26b41 | 49 | "Inhibit", |
0fb0c56f | 50 | error, |
b9c26b41 | 51 | &reply, |
0fb0c56f | 52 | "ssss", arg_what, arg_who, arg_why, arg_mode); |
3137e0bd LP |
53 | if (r < 0) |
54 | return r; | |
eecd1362 | 55 | |
0fb0c56f TG |
56 | r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd); |
57 | if (r < 0) | |
5b30bef8 | 58 | return r; |
eecd1362 | 59 | |
ead34950 | 60 | r = fcntl(fd, F_DUPFD_CLOEXEC, 3); |
0fb0c56f TG |
61 | if (r < 0) |
62 | return -errno; | |
63 | ||
3137e0bd | 64 | return r; |
eecd1362 LP |
65 | } |
66 | ||
0e6872cd LP |
67 | static int print_inhibitors(sd_bus *bus) { |
68 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
4afd3348 | 69 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
a9426617 | 70 | _cleanup_(table_unrefp) Table *table = NULL; |
eecd1362 LP |
71 | int r; |
72 | ||
0221d68a | 73 | (void) pager_open(arg_pager_flags); |
f3c9133c | 74 | |
0fb0c56f | 75 | r = sd_bus_call_method( |
b9c26b41 | 76 | bus, |
eecd1362 LP |
77 | "org.freedesktop.login1", |
78 | "/org/freedesktop/login1", | |
79 | "org.freedesktop.login1.Manager", | |
b9c26b41 | 80 | "ListInhibitors", |
0e6872cd | 81 | &error, |
b9c26b41 | 82 | &reply, |
0fb0c56f | 83 | ""); |
3137e0bd | 84 | if (r < 0) |
0e6872cd | 85 | return log_error_errno(r, "Could not get active inhibitors: %s", bus_error_message(&error, r)); |
eecd1362 | 86 | |
9969b542 | 87 | table = table_new("who", "uid", "user", "pid", "comm", "what", "why", "mode"); |
a9426617 LP |
88 | if (!table) |
89 | return log_oom(); | |
90 | ||
91 | /* If there's not enough space, shorten the "WHY" column, as it's little more than an explaining comment. */ | |
92 | (void) table_set_weight(table, TABLE_HEADER_CELL(6), 20); | |
93 | ||
0fb0c56f TG |
94 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)"); |
95 | if (r < 0) | |
40be0704 | 96 | return bus_log_parse_error(r); |
eecd1362 | 97 | |
a9426617 | 98 | for (;;) { |
391a4f72 | 99 | _cleanup_free_ char *comm = NULL, *u = NULL; |
a9426617 LP |
100 | const char *what, *who, *why, *mode; |
101 | uint32_t uid, pid; | |
102 | ||
103 | r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid); | |
104 | if (r < 0) | |
105 | return bus_log_parse_error(r); | |
106 | if (r == 0) | |
107 | break; | |
eecd1362 | 108 | |
ca5447c0 MM |
109 | if (arg_mode && !streq(mode, arg_mode)) |
110 | continue; | |
111 | ||
a9426617 | 112 | (void) get_process_comm(pid, &comm); |
391a4f72 LP |
113 | u = uid_to_name(uid); |
114 | ||
a9426617 LP |
115 | r = table_add_many(table, |
116 | TABLE_STRING, who, | |
117 | TABLE_UINT32, uid, | |
118 | TABLE_STRING, strna(u), | |
119 | TABLE_UINT32, pid, | |
120 | TABLE_STRING, strna(comm), | |
121 | TABLE_STRING, what, | |
122 | TABLE_STRING, why, | |
123 | TABLE_STRING, mode); | |
124 | if (r < 0) | |
125 | return log_error_errno(r, "Failed to add table row: %m"); | |
eecd1362 | 126 | } |
0fb0c56f TG |
127 | |
128 | r = sd_bus_message_exit_container(reply); | |
129 | if (r < 0) | |
40be0704 | 130 | return bus_log_parse_error(r); |
eecd1362 | 131 | |
a9426617 LP |
132 | if (table_get_rows(table) > 1) { |
133 | r = table_set_sort(table, (size_t) 1, (size_t) 0, (size_t) 5, (size_t) 6, (size_t) -1); | |
134 | if (r < 0) | |
135 | return log_error_errno(r, "Failed to sort table: %m"); | |
136 | ||
137 | table_set_header(table, arg_legend); | |
138 | ||
139 | r = table_print(table, NULL); | |
140 | if (r < 0) | |
141 | return log_error_errno(r, "Failed to show table: %m"); | |
142 | } | |
143 | ||
144 | if (arg_legend) { | |
145 | if (table_get_rows(table) > 1) | |
146 | printf("\n%zu inhibitors listed.\n", table_get_rows(table) - 1); | |
147 | else | |
148 | printf("No inhibitors.\n"); | |
149 | } | |
150 | ||
4654e558 | 151 | return 0; |
eecd1362 LP |
152 | } |
153 | ||
37ec0fdd LP |
154 | static int help(void) { |
155 | _cleanup_free_ char *link = NULL; | |
156 | int r; | |
157 | ||
158 | r = terminal_urlify_man("systemd-inhibit", "1", &link); | |
159 | if (r < 0) | |
160 | return log_oom(); | |
161 | ||
353b2baa LP |
162 | printf("%s [OPTIONS...] COMMAND ...\n" |
163 | "\n%sExecute a process while inhibiting shutdown/sleep/idle.%s\n\n" | |
eecd1362 LP |
164 | " -h --help Show this help\n" |
165 | " --version Show package version\n" | |
f3c9133c | 166 | " --no-pager Do not pipe output into a pager\n" |
a9426617 | 167 | " --no-legend Do not show the headers and footers\n" |
12a1309e LP |
168 | " --what=WHAT Operations to inhibit, colon separated list of:\n" |
169 | " shutdown, sleep, idle, handle-power-key,\n" | |
2f1bb513 СНА |
170 | " handle-suspend-key, handle-hibernate-key,\n" |
171 | " handle-lid-switch\n" | |
eecd1362 LP |
172 | " --who=STRING A descriptive string who is inhibiting\n" |
173 | " --why=STRING A descriptive string why is being inhibited\n" | |
174 | " --mode=MODE One of block or delay\n" | |
601185b4 | 175 | " --list List active inhibitors\n" |
37ec0fdd LP |
176 | "\nSee the %s for details.\n" |
177 | , program_invocation_short_name | |
353b2baa | 178 | , ansi_highlight(), ansi_normal() |
37ec0fdd LP |
179 | , link |
180 | ); | |
181 | ||
182 | return 0; | |
eecd1362 LP |
183 | } |
184 | ||
185 | static int parse_argv(int argc, char *argv[]) { | |
186 | ||
187 | enum { | |
188 | ARG_VERSION = 0x100, | |
189 | ARG_WHAT, | |
190 | ARG_WHO, | |
191 | ARG_WHY, | |
192 | ARG_MODE, | |
193 | ARG_LIST, | |
f3c9133c | 194 | ARG_NO_PAGER, |
a9426617 | 195 | ARG_NO_LEGEND, |
eecd1362 LP |
196 | }; |
197 | ||
198 | static const struct option options[] = { | |
199 | { "help", no_argument, NULL, 'h' }, | |
200 | { "version", no_argument, NULL, ARG_VERSION }, | |
201 | { "what", required_argument, NULL, ARG_WHAT }, | |
202 | { "who", required_argument, NULL, ARG_WHO }, | |
203 | { "why", required_argument, NULL, ARG_WHY }, | |
204 | { "mode", required_argument, NULL, ARG_MODE }, | |
205 | { "list", no_argument, NULL, ARG_LIST }, | |
f3c9133c | 206 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
a9426617 | 207 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, |
eb9da376 | 208 | {} |
eecd1362 LP |
209 | }; |
210 | ||
211 | int c; | |
212 | ||
213 | assert(argc >= 0); | |
214 | assert(argv); | |
215 | ||
601185b4 | 216 | while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) |
eecd1362 LP |
217 | |
218 | switch (c) { | |
219 | ||
220 | case 'h': | |
37ec0fdd | 221 | return help(); |
eecd1362 LP |
222 | |
223 | case ARG_VERSION: | |
3f6fd1ba | 224 | return version(); |
eecd1362 LP |
225 | |
226 | case ARG_WHAT: | |
227 | arg_what = optarg; | |
228 | break; | |
229 | ||
230 | case ARG_WHO: | |
231 | arg_who = optarg; | |
232 | break; | |
233 | ||
234 | case ARG_WHY: | |
235 | arg_why = optarg; | |
236 | break; | |
237 | ||
238 | case ARG_MODE: | |
239 | arg_mode = optarg; | |
240 | break; | |
241 | ||
242 | case ARG_LIST: | |
243 | arg_action = ACTION_LIST; | |
244 | break; | |
245 | ||
f3c9133c | 246 | case ARG_NO_PAGER: |
0221d68a | 247 | arg_pager_flags |= PAGER_DISABLE; |
f3c9133c DT |
248 | break; |
249 | ||
a9426617 LP |
250 | case ARG_NO_LEGEND: |
251 | arg_legend = false; | |
252 | break; | |
253 | ||
eb9da376 | 254 | case '?': |
eecd1362 | 255 | return -EINVAL; |
eb9da376 LP |
256 | |
257 | default: | |
258 | assert_not_reached("Unhandled option"); | |
eecd1362 | 259 | } |
eecd1362 | 260 | |
d9130355 | 261 | if (arg_action == ACTION_INHIBIT && optind == argc) |
2f2343c6 KS |
262 | arg_action = ACTION_LIST; |
263 | ||
baaa35ad ZJS |
264 | else if (arg_action == ACTION_INHIBIT && optind >= argc) |
265 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
266 | "Missing command line to execute."); | |
eecd1362 LP |
267 | |
268 | return 1; | |
269 | } | |
270 | ||
b453c447 | 271 | static int run(int argc, char *argv[]) { |
4afd3348 | 272 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; |
5220a6f3 | 273 | int r; |
eecd1362 | 274 | |
1a043959 | 275 | log_show_color(true); |
eecd1362 LP |
276 | log_parse_environment(); |
277 | log_open(); | |
278 | ||
279 | r = parse_argv(argc, argv); | |
b453c447 ZJS |
280 | if (r <= 0) |
281 | return r; | |
eecd1362 | 282 | |
76b54375 | 283 | r = sd_bus_default_system(&bus); |
b453c447 ZJS |
284 | if (r < 0) |
285 | return log_error_errno(r, "Failed to connect to bus: %m"); | |
eecd1362 | 286 | |
a34c79d0 ZJS |
287 | if (arg_action == ACTION_LIST) |
288 | return print_inhibitors(bus); | |
a34c79d0 | 289 | else { |
0e6872cd | 290 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
b473691d | 291 | _cleanup_strv_free_ char **arguments = NULL; |
5220a6f3 | 292 | _cleanup_free_ char *w = NULL; |
b473691d | 293 | _cleanup_close_ int fd = -1; |
eecd1362 LP |
294 | pid_t pid; |
295 | ||
106f12a0 CH |
296 | /* Ignore SIGINT and allow the forked process to receive it */ |
297 | (void) ignore_signals(SIGINT, -1); | |
298 | ||
1b5e34fe LP |
299 | if (!arg_who) { |
300 | w = strv_join(argv + optind, " "); | |
301 | if (!w) | |
302 | return log_oom(); | |
303 | ||
304 | arg_who = w; | |
305 | } | |
eecd1362 | 306 | |
ca5447c0 MM |
307 | if (!arg_mode) |
308 | arg_mode = "block"; | |
309 | ||
eecd1362 | 310 | fd = inhibit(bus, &error); |
b453c447 | 311 | if (fd < 0) |
6bc7a6ac | 312 | return log_error_errno(fd, "Failed to inhibit: %s", bus_error_message(&error, fd)); |
eecd1362 | 313 | |
b473691d LP |
314 | arguments = strv_copy(argv + optind); |
315 | if (!arguments) | |
316 | return log_oom(); | |
317 | ||
0672e2c6 | 318 | r = safe_fork("(inhibit)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_CLOSE_ALL_FDS|FORK_RLIMIT_NOFILE_SAFE|FORK_LOG, &pid); |
b6e1fff1 | 319 | if (r < 0) |
b453c447 | 320 | return r; |
4c253ed1 | 321 | if (r == 0) { |
eecd1362 | 322 | /* Child */ |
b473691d | 323 | execvp(arguments[0], arguments); |
0b1f3c76 | 324 | log_open(); |
56f64d95 | 325 | log_error_errno(errno, "Failed to execute %s: %m", argv[optind]); |
eecd1362 LP |
326 | _exit(EXIT_FAILURE); |
327 | } | |
328 | ||
b453c447 | 329 | return wait_for_terminate_and_check(argv[optind], pid, WAIT_LOG); |
eecd1362 | 330 | } |
eecd1362 | 331 | } |
b453c447 ZJS |
332 | |
333 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |