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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
60918275 | 20 | #include <errno.h> |
400f1a33 LP |
21 | #include <fcntl.h> |
22 | #include <linux/kd.h> | |
9152c765 | 23 | #include <signal.h> |
400f1a33 | 24 | #include <string.h> |
e46b13c8 | 25 | #include <sys/epoll.h> |
400f1a33 | 26 | #include <sys/inotify.h> |
e1414003 | 27 | #include <sys/ioctl.h> |
400f1a33 | 28 | #include <sys/reboot.h> |
8742514c | 29 | #include <sys/timerfd.h> |
400f1a33 LP |
30 | #include <sys/wait.h> |
31 | #include <unistd.h> | |
830f6caa LP |
32 | |
33 | #ifdef HAVE_AUDIT | |
4927fcae | 34 | #include <libaudit.h> |
830f6caa | 35 | #endif |
60918275 | 36 | |
718db961 | 37 | #include "sd-daemon.h" |
718db961 | 38 | #include "sd-messages.h" |
81527be1 | 39 | |
b5efdb8a | 40 | #include "alloc-util.h" |
400f1a33 LP |
41 | #include "audit-fd.h" |
42 | #include "boot-timestamps.h" | |
43 | #include "bus-common-errors.h" | |
44 | #include "bus-error.h" | |
45 | #include "bus-kernel.h" | |
46 | #include "bus-util.h" | |
00d9ef85 | 47 | #include "clean-ipc.h" |
400f1a33 LP |
48 | #include "dbus-job.h" |
49 | #include "dbus-manager.h" | |
50 | #include "dbus-unit.h" | |
51 | #include "dbus.h" | |
d063a527 | 52 | #include "dirent-util.h" |
400f1a33 | 53 | #include "env-util.h" |
4f5dd394 | 54 | #include "escape.h" |
400f1a33 | 55 | #include "exit-status.h" |
3ffd4af2 | 56 | #include "fd-util.h" |
0d39fa9c | 57 | #include "fileio.h" |
f4f15635 | 58 | #include "fs-util.h" |
60918275 | 59 | #include "hashmap.h" |
c004493c | 60 | #include "io-util.h" |
400f1a33 | 61 | #include "locale-setup.h" |
16354eff | 62 | #include "log.h" |
400f1a33 | 63 | #include "macro.h" |
3ffd4af2 | 64 | #include "manager.h" |
400f1a33 | 65 | #include "missing.h" |
49e942b2 | 66 | #include "mkdir.h" |
6bedfcbb | 67 | #include "parse-util.h" |
400f1a33 LP |
68 | #include "path-lookup.h" |
69 | #include "path-util.h" | |
70 | #include "process-util.h" | |
ea430986 | 71 | #include "ratelimit.h" |
c6878637 | 72 | #include "rm-rf.h" |
400f1a33 | 73 | #include "signal-util.h" |
514f4ef5 | 74 | #include "special.h" |
8fcde012 | 75 | #include "stat-util.h" |
8b43440b | 76 | #include "string-table.h" |
07630cea | 77 | #include "string-util.h" |
400f1a33 LP |
78 | #include "strv.h" |
79 | #include "terminal-util.h" | |
80 | #include "time-util.h" | |
81 | #include "transaction.h" | |
affb60b1 | 82 | #include "umask-util.h" |
400f1a33 | 83 | #include "unit-name.h" |
00d9ef85 | 84 | #include "user-util.h" |
400f1a33 | 85 | #include "util.h" |
5dc4c17f | 86 | #include "virt.h" |
e96d6be7 | 87 | #include "watchdog.h" |
60918275 | 88 | |
a47806fa | 89 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 90 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 91 | |
03b717a3 | 92 | /* Initial delay and the interval for printing status messages about running jobs */ |
fd08a840 ZJS |
93 | #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) |
94 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) | |
03b717a3 MS |
95 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
96 | ||
718db961 | 97 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 98 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
99 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
100 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
101 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 102 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 103 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 104 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
e801700e | 105 | static int manager_run_generators(Manager *m); |
718db961 | 106 | |
2ae56591 | 107 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 108 | usec_t next; |
cfa9677b | 109 | int r; |
e5723c89 | 110 | |
718db961 | 111 | assert(m); |
03b717a3 | 112 | |
42bf1ae1 FB |
113 | /* We do not want to show the cylon animation if the user |
114 | * needs to confirm service executions otherwise confirmation | |
115 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 116 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
117 | return; |
118 | ||
718db961 | 119 | if (m->jobs_in_progress_event_source) |
2ae56591 | 120 | return; |
03b717a3 | 121 | |
e5723c89 | 122 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; |
cfa9677b | 123 | r = sd_event_add_time( |
6a0f1f6d LP |
124 | m->event, |
125 | &m->jobs_in_progress_event_source, | |
126 | CLOCK_MONOTONIC, | |
127 | next, 0, | |
128 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
129 | if (r < 0) |
130 | return; | |
7dfbe2e3 TG |
131 | |
132 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
133 | } |
134 | ||
1fc464f6 | 135 | #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1)) |
03b717a3 | 136 | |
03b717a3 MS |
137 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
138 | char *p = buffer; | |
139 | ||
140 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
141 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
142 | ||
143 | if (pos > 1) { | |
6282c859 MS |
144 | if (pos > 2) |
145 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
146 | if (log_get_show_color()) |
147 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
148 | *p++ = '*'; |
149 | } | |
150 | ||
151 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
152 | if (log_get_show_color()) |
153 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
154 | *p++ = '*'; |
155 | } | |
156 | ||
64c3610b FB |
157 | if (log_get_show_color()) |
158 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
159 | |
160 | if (pos < width) { | |
64c3610b FB |
161 | if (log_get_show_color()) |
162 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 163 | *p++ = '*'; |
6282c859 MS |
164 | if (pos < width-1) |
165 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
166 | if (log_get_show_color()) |
167 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 168 | } |
03b717a3 MS |
169 | } |
170 | ||
cb8ccb22 | 171 | void manager_flip_auto_status(Manager *m, bool enable) { |
f755e3b7 LP |
172 | assert(m); |
173 | ||
cb8ccb22 ZJS |
174 | if (enable) { |
175 | if (m->show_status == SHOW_STATUS_AUTO) | |
176 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY); | |
177 | } else { | |
178 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
179 | manager_set_show_status(m, SHOW_STATUS_AUTO); | |
180 | } | |
181 | } | |
182 | ||
03b717a3 | 183 | static void manager_print_jobs_in_progress(Manager *m) { |
718db961 | 184 | _cleanup_free_ char *job_of_n = NULL; |
03b717a3 MS |
185 | Iterator i; |
186 | Job *j; | |
03b717a3 MS |
187 | unsigned counter = 0, print_nr; |
188 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
189 | unsigned cylon_pos; | |
8bb310c3 ZJS |
190 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
191 | uint64_t x; | |
03b717a3 | 192 | |
718db961 | 193 | assert(m); |
9c3349e2 | 194 | assert(m->n_running_jobs > 0); |
718db961 | 195 | |
cb8ccb22 | 196 | manager_flip_auto_status(m, true); |
d450b6f2 | 197 | |
03b717a3 MS |
198 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
199 | ||
200 | HASHMAP_FOREACH(j, m->jobs, i) | |
201 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
202 | break; | |
203 | ||
e970a72e MS |
204 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
205 | * so the above loop must have succeeded in finding j. */ | |
206 | assert(counter == print_nr + 1); | |
51d122af | 207 | assert(j); |
5a82a91a | 208 | |
03b717a3 MS |
209 | cylon_pos = m->jobs_in_progress_iteration % 14; |
210 | if (cylon_pos >= 8) | |
211 | cylon_pos = 14 - cylon_pos; | |
212 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
213 | ||
8bb310c3 ZJS |
214 | m->jobs_in_progress_iteration++; |
215 | ||
d6483ba7 ZJS |
216 | if (m->n_running_jobs > 1) { |
217 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
218 | job_of_n = NULL; | |
219 | } | |
03b717a3 | 220 | |
8bb310c3 ZJS |
221 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
222 | if (job_get_timeout(j, &x) > 0) | |
223 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
224 | ||
127d5fd1 | 225 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
226 | "%sA %s job is running for %s (%s / %s)", |
227 | strempty(job_of_n), | |
228 | job_type_to_string(j->type), | |
229 | unit_description(j->unit), | |
230 | time, limit); | |
03b717a3 MS |
231 | } |
232 | ||
e46b13c8 ZJS |
233 | static int have_ask_password(void) { |
234 | _cleanup_closedir_ DIR *dir; | |
8fb3f009 | 235 | struct dirent *de; |
e46b13c8 ZJS |
236 | |
237 | dir = opendir("/run/systemd/ask-password"); | |
238 | if (!dir) { | |
239 | if (errno == ENOENT) | |
240 | return false; | |
241 | else | |
242 | return -errno; | |
243 | } | |
244 | ||
8fb3f009 | 245 | FOREACH_DIRENT_ALL(de, dir, return -errno) { |
e46b13c8 ZJS |
246 | if (startswith(de->d_name, "ask.")) |
247 | return true; | |
248 | } | |
8fb3f009 | 249 | return false; |
e46b13c8 ZJS |
250 | } |
251 | ||
252 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
253 | int fd, uint32_t revents, void *userdata) { | |
254 | Manager *m = userdata; | |
255 | ||
256 | assert(m); | |
257 | ||
258 | flush_fd(fd); | |
259 | ||
260 | m->have_ask_password = have_ask_password(); | |
261 | if (m->have_ask_password < 0) | |
262 | /* Log error but continue. Negative have_ask_password | |
263 | * is treated as unknown status. */ | |
c33b3297 | 264 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
265 | |
266 | return 0; | |
267 | } | |
268 | ||
269 | static void manager_close_ask_password(Manager *m) { | |
270 | assert(m); | |
271 | ||
e46b13c8 | 272 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 273 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
274 | m->have_ask_password = -EINVAL; |
275 | } | |
276 | ||
277 | static int manager_check_ask_password(Manager *m) { | |
278 | int r; | |
279 | ||
280 | assert(m); | |
281 | ||
282 | if (!m->ask_password_event_source) { | |
283 | assert(m->ask_password_inotify_fd < 0); | |
284 | ||
285 | mkdir_p_label("/run/systemd/ask-password", 0755); | |
286 | ||
287 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 MS |
288 | if (m->ask_password_inotify_fd < 0) |
289 | return log_error_errno(errno, "inotify_init1() failed: %m"); | |
e46b13c8 ZJS |
290 | |
291 | if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) { | |
56f64d95 | 292 | log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
293 | manager_close_ask_password(m); |
294 | return -errno; | |
295 | } | |
296 | ||
297 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
298 | m->ask_password_inotify_fd, EPOLLIN, | |
299 | manager_dispatch_ask_password_fd, m); | |
300 | if (r < 0) { | |
56f64d95 | 301 | log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
302 | manager_close_ask_password(m); |
303 | return -errno; | |
304 | } | |
305 | ||
7dfbe2e3 TG |
306 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
307 | ||
e46b13c8 ZJS |
308 | /* Queries might have been added meanwhile... */ |
309 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
310 | m->ask_password_inotify_fd, EPOLLIN, m); | |
311 | } | |
312 | ||
313 | return m->have_ask_password; | |
314 | } | |
315 | ||
31a7eb86 | 316 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
317 | int r; |
318 | ||
718db961 LP |
319 | assert(m); |
320 | ||
321 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
322 | return 0; |
323 | ||
324 | if (m->idle_pipe[2] < 0) | |
325 | return 0; | |
326 | ||
151b9b96 | 327 | r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m); |
23bbb0de MS |
328 | if (r < 0) |
329 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 330 | |
7dfbe2e3 TG |
331 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
332 | ||
31a7eb86 | 333 | return 0; |
31a7eb86 ZJS |
334 | } |
335 | ||
718db961 LP |
336 | static void manager_close_idle_pipe(Manager *m) { |
337 | assert(m); | |
31a7eb86 | 338 | |
cd72bd8a LP |
339 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
340 | ||
3d94f76c LP |
341 | safe_close_pair(m->idle_pipe); |
342 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
343 | } |
344 | ||
8742514c | 345 | static int manager_setup_time_change(Manager *m) { |
718db961 | 346 | int r; |
b92bea5d ZJS |
347 | |
348 | /* We only care for the cancellation event, hence we set the | |
349 | * timeout to the latest possible value. */ | |
350 | struct itimerspec its = { | |
351 | .it_value.tv_sec = TIME_T_MAX, | |
352 | }; | |
8742514c | 353 | |
718db961 LP |
354 | assert(m); |
355 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
8742514c | 356 | |
0d8c31ff ZJS |
357 | if (m->test_run) |
358 | return 0; | |
359 | ||
8742514c LP |
360 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever |
361 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
362 | ||
718db961 | 363 | m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); |
4a62c710 MS |
364 | if (m->time_change_fd < 0) |
365 | return log_error_errno(errno, "Failed to create timerfd: %m"); | |
8742514c | 366 | |
718db961 | 367 | if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
56f64d95 | 368 | log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); |
03e334a1 | 369 | m->time_change_fd = safe_close(m->time_change_fd); |
8742514c LP |
370 | return 0; |
371 | } | |
372 | ||
151b9b96 | 373 | r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m); |
23bbb0de MS |
374 | if (r < 0) |
375 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 376 | |
7dfbe2e3 TG |
377 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
378 | ||
8742514c LP |
379 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
80876c20 | 384 | static int enable_special_signals(Manager *m) { |
718db961 | 385 | _cleanup_close_ int fd = -1; |
80876c20 LP |
386 | |
387 | assert(m); | |
388 | ||
37453b3a EV |
389 | if (m->test_run) |
390 | return 0; | |
391 | ||
a41b539e | 392 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
393 | * this will fail with EPERM (older) or EINVAL (newer), so |
394 | * ignore that. */ | |
395 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL) | |
56f64d95 | 396 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 397 | |
a41b539e LP |
398 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
399 | if (fd < 0) { | |
400 | /* Support systems without virtual console */ | |
401 | if (fd != -ENOENT) | |
56f64d95 | 402 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 403 | } else { |
80876c20 LP |
404 | /* Enable that we get SIGWINCH on kbrequest */ |
405 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 406 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
407 | } |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
ce578209 | 412 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
413 | struct sigaction sa = { |
414 | .sa_handler = SIG_DFL, | |
415 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
416 | }; | |
718db961 LP |
417 | sigset_t mask; |
418 | int r; | |
60918275 | 419 | |
ce578209 LP |
420 | assert(m); |
421 | ||
57c0c30e LP |
422 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
423 | ||
4dffec14 LP |
424 | /* We make liberal use of realtime signals here. On |
425 | * Linux/glibc we have 30 of them (with the exception of Linux | |
426 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
427 | * (aka SIGRTMAX). */ | |
7d793605 | 428 | |
4dffec14 | 429 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
430 | sigset_add_many(&mask, |
431 | SIGCHLD, /* Child died */ | |
432 | SIGTERM, /* Reexecute daemon */ | |
433 | SIGHUP, /* Reload configuration */ | |
434 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
435 | SIGUSR2, /* systemd: dump status */ | |
436 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
437 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
438 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 439 | |
7d793605 | 440 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 441 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
442 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
443 | SIGRTMIN+3, /* systemd: start halt.target */ | |
444 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
445 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 446 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
447 | |
448 | /* ... space for more special targets ... */ | |
449 | ||
0003d1ab LP |
450 | SIGRTMIN+13, /* systemd: Immediate halt */ |
451 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
452 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
453 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
454 | |
455 | /* ... space for more immediate system state changes ... */ | |
456 | ||
0658666b LP |
457 | SIGRTMIN+20, /* systemd: enable status messages */ |
458 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
459 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
460 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 461 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
462 | |
463 | /* .. one free signal here ... */ | |
464 | ||
465 | #if !defined(__hppa64__) && !defined(__hppa__) | |
466 | /* Apparently Linux on hppa has fewer RT | |
467 | * signals (SIGRTMAX is SIGRTMIN+25 there), | |
468 | * hence let's not try to make use of them | |
469 | * here. Since these commands are accessible | |
470 | * by different means and only really a safety | |
471 | * net, the missing functionality on hppa | |
472 | * shouldn't matter. */ | |
473 | ||
4cfa2c99 | 474 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
475 | SIGRTMIN+27, /* systemd: set log target to console */ |
476 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
ee33e53a | 477 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */ |
4dffec14 LP |
478 | |
479 | /* ... one free signal here SIGRTMIN+30 ... */ | |
480 | #endif | |
7d793605 | 481 | -1); |
ce578209 LP |
482 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
483 | ||
718db961 LP |
484 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
485 | if (m->signal_fd < 0) | |
ce578209 LP |
486 | return -errno; |
487 | ||
151b9b96 | 488 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
489 | if (r < 0) |
490 | return r; | |
ce578209 | 491 | |
7dfbe2e3 TG |
492 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
493 | ||
d8fdc620 LP |
494 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
495 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
496 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
497 | * status information before detecting that there's no process in a cgroup. */ | |
498 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
499 | if (r < 0) |
500 | return r; | |
501 | ||
463d0d15 | 502 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 503 | return enable_special_signals(m); |
e1414003 | 504 | |
ce578209 LP |
505 | return 0; |
506 | } | |
507 | ||
f069efb4 LP |
508 | static void manager_clean_environment(Manager *m) { |
509 | assert(m); | |
510 | ||
511 | /* Let's remove some environment variables that we | |
512 | * need ourselves to communicate with our clients */ | |
513 | strv_env_unset_many( | |
514 | m->environment, | |
515 | "NOTIFY_SOCKET", | |
516 | "MAINPID", | |
517 | "MANAGERPID", | |
518 | "LISTEN_PID", | |
519 | "LISTEN_FDS", | |
8dd4c05b | 520 | "LISTEN_FDNAMES", |
f069efb4 LP |
521 | "WATCHDOG_PID", |
522 | "WATCHDOG_USEC", | |
4b58153d | 523 | "INVOCATION_ID", |
f069efb4 LP |
524 | NULL); |
525 | } | |
526 | ||
e21fea24 | 527 | static int manager_default_environment(Manager *m) { |
71ecc858 LP |
528 | assert(m); |
529 | ||
463d0d15 | 530 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
531 | /* The system manager always starts with a clean |
532 | * environment for its children. It does not import | |
533 | * the kernel or the parents exported variables. | |
534 | * | |
535 | * The initial passed environ is untouched to keep | |
536 | * /proc/self/environ valid; it is used for tagging | |
537 | * the init process inside containers. */ | |
43638332 ZJS |
538 | m->environment = strv_new("PATH=" DEFAULT_PATH, |
539 | NULL); | |
e21fea24 KS |
540 | |
541 | /* Import locale variables LC_*= from configuration */ | |
542 | locale_setup(&m->environment); | |
43d03a83 | 543 | } else { |
e21fea24 KS |
544 | /* The user manager passes its own environment |
545 | * along to its children. */ | |
546 | m->environment = strv_copy(environ); | |
43d03a83 LP |
547 | } |
548 | ||
e21fea24 KS |
549 | if (!m->environment) |
550 | return -ENOMEM; | |
8b55b8c4 | 551 | |
f069efb4 | 552 | manager_clean_environment(m); |
9d5a3757 LP |
553 | strv_sort(m->environment); |
554 | ||
e21fea24 | 555 | return 0; |
71ecc858 LP |
556 | } |
557 | ||
463d0d15 | 558 | int manager_new(UnitFileScope scope, bool test_run, Manager **_m) { |
ce578209 | 559 | Manager *m; |
e3dd987c | 560 | int r; |
8e274523 LP |
561 | |
562 | assert(_m); | |
463d0d15 | 563 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 564 | |
915b3753 LP |
565 | m = new0(Manager, 1); |
566 | if (!m) | |
8e274523 | 567 | return -ENOMEM; |
60918275 | 568 | |
463d0d15 | 569 | m->unit_file_scope = scope; |
a16e1123 | 570 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
bd8f585b | 571 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; |
9ded9cd1 | 572 | m->default_tasks_accounting = true; |
79baeeb9 | 573 | m->default_tasks_max = UINT64_MAX; |
80876c20 | 574 | |
463d0d15 LP |
575 | #ifdef ENABLE_EFI |
576 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) | |
577 | boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); | |
578 | #endif | |
579 | ||
f2341e0a | 580 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
581 | if (MANAGER_IS_SYSTEM(m)) { |
582 | m->unit_log_field = "UNIT="; | |
583 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
584 | |
585 | m->invocation_log_field = "INVOCATION_ID="; | |
586 | m->invocation_log_format_string = "INVOCATION_ID=" SD_ID128_FORMAT_STR; | |
463d0d15 LP |
587 | } else { |
588 | m->unit_log_field = "USER_UNIT="; | |
589 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
590 | |
591 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
592 | m->invocation_log_format_string = "USER_INVOCATION_ID=" SD_ID128_FORMAT_STR; | |
463d0d15 | 593 | } |
f2341e0a | 594 | |
718db961 | 595 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; |
8742514c | 596 | |
d8fdc620 | 597 | m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = |
232f6754 | 598 | m->dev_autofs_fd = m->private_listen_fd = m->cgroup_inotify_fd = |
d8fdc620 | 599 | m->ask_password_inotify_fd = -1; |
d379d442 | 600 | |
00d9ef85 LP |
601 | m->user_lookup_fds[0] = m->user_lookup_fds[1] = -1; |
602 | ||
ea430986 | 603 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 604 | |
e46b13c8 | 605 | m->have_ask_password = -EINVAL; /* we don't know */ |
ae2a2c53 | 606 | m->first_boot = -1; |
e46b13c8 | 607 | |
0d8c31ff ZJS |
608 | m->test_run = test_run; |
609 | ||
2e5c94b9 LP |
610 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
611 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
612 | ||
e21fea24 KS |
613 | r = manager_default_environment(m); |
614 | if (r < 0) | |
1137a57c LP |
615 | goto fail; |
616 | ||
d5099efc | 617 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 618 | if (r < 0) |
60918275 LP |
619 | goto fail; |
620 | ||
d5099efc | 621 | r = hashmap_ensure_allocated(&m->jobs, NULL); |
718db961 | 622 | if (r < 0) |
60918275 LP |
623 | goto fail; |
624 | ||
d5099efc | 625 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); |
718db961 | 626 | if (r < 0) |
9152c765 LP |
627 | goto fail; |
628 | ||
d5099efc | 629 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 630 | if (r < 0) |
05e343b7 LP |
631 | goto fail; |
632 | ||
718db961 LP |
633 | r = sd_event_default(&m->event); |
634 | if (r < 0) | |
8742514c LP |
635 | goto fail; |
636 | ||
151b9b96 | 637 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); |
752b5905 LP |
638 | if (r < 0) |
639 | goto fail; | |
640 | ||
641 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
642 | if (r < 0) | |
643 | goto fail; | |
644 | ||
645 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
646 | if (r < 0) | |
647 | goto fail; | |
648 | ||
7dfbe2e3 TG |
649 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); |
650 | ||
8742514c LP |
651 | r = manager_setup_signals(m); |
652 | if (r < 0) | |
9152c765 LP |
653 | goto fail; |
654 | ||
8742514c LP |
655 | r = manager_setup_cgroup(m); |
656 | if (r < 0) | |
8e274523 LP |
657 | goto fail; |
658 | ||
8742514c LP |
659 | r = manager_setup_time_change(m); |
660 | if (r < 0) | |
8c47c732 LP |
661 | goto fail; |
662 | ||
9670d583 LP |
663 | m->udev = udev_new(); |
664 | if (!m->udev) { | |
665 | r = -ENOMEM; | |
666 | goto fail; | |
667 | } | |
668 | ||
232f6754 ZJS |
669 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
670 | * since they might have gotten serialized across the reexec. */ | |
d86f9d52 | 671 | |
72bc8d00 LP |
672 | m->taint_usr = dir_is_empty("/usr") > 0; |
673 | ||
8e274523 LP |
674 | *_m = m; |
675 | return 0; | |
60918275 LP |
676 | |
677 | fail: | |
678 | manager_free(m); | |
8e274523 | 679 | return r; |
60918275 LP |
680 | } |
681 | ||
d86f9d52 | 682 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 683 | int r; |
d86f9d52 | 684 | |
0d8c31ff ZJS |
685 | if (m->test_run) |
686 | return 0; | |
687 | ||
d86f9d52 LP |
688 | if (m->notify_fd < 0) { |
689 | _cleanup_close_ int fd = -1; | |
920b52e4 | 690 | union sockaddr_union sa = { |
7181dbdb LP |
691 | .sa.sa_family = AF_UNIX, |
692 | }; | |
55836941 | 693 | static const int one = 1; |
92dd7c49 | 694 | const char *e; |
d86f9d52 LP |
695 | |
696 | /* First free all secondary fields */ | |
a1e58e8e | 697 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
698 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
699 | ||
700 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
701 | if (fd < 0) |
702 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 703 | |
a47806fa LP |
704 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
705 | ||
92dd7c49 LP |
706 | e = manager_get_runtime_prefix(m); |
707 | if (!e) { | |
708 | log_error("Failed to determine runtime prefix."); | |
709 | return -EINVAL; | |
7181dbdb | 710 | } |
92dd7c49 LP |
711 | |
712 | m->notify_socket = strappend(e, "/systemd/notify"); | |
498e87d6 LP |
713 | if (!m->notify_socket) |
714 | return log_oom(); | |
715 | ||
716 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
f0e62e89 | 717 | (void) unlink(m->notify_socket); |
7181dbdb LP |
718 | |
719 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
fc2fffe7 | 720 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
4a62c710 MS |
721 | if (r < 0) |
722 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
d86f9d52 LP |
723 | |
724 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
725 | if (r < 0) |
726 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
d86f9d52 | 727 | |
d86f9d52 LP |
728 | m->notify_fd = fd; |
729 | fd = -1; | |
730 | ||
731 | log_debug("Using notification socket %s", m->notify_socket); | |
732 | } | |
733 | ||
734 | if (!m->notify_event_source) { | |
151b9b96 | 735 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
736 | if (r < 0) |
737 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 738 | |
d8fdc620 LP |
739 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
740 | * service an exit message belongs. */ | |
df006034 | 741 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7); |
23bbb0de MS |
742 | if (r < 0) |
743 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
744 | |
745 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
746 | } |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
d8fdc620 LP |
751 | static int manager_setup_cgroups_agent(Manager *m) { |
752 | ||
753 | static const union sockaddr_union sa = { | |
754 | .un.sun_family = AF_UNIX, | |
755 | .un.sun_path = "/run/systemd/cgroups-agent", | |
756 | }; | |
757 | int r; | |
758 | ||
759 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
760 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
761 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
762 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
763 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
764 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
765 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
766 | * we thus won't lose messages. | |
767 | * | |
768 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
769 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
770 | * bus for these messages. */ | |
771 | ||
772 | if (m->test_run) | |
773 | return 0; | |
774 | ||
775 | if (!MANAGER_IS_SYSTEM(m)) | |
776 | return 0; | |
777 | ||
5da38d07 | 778 | if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) > 0) /* We don't need this anymore on the unified hierarchy */ |
d8fdc620 LP |
779 | return 0; |
780 | ||
781 | if (m->cgroups_agent_fd < 0) { | |
782 | _cleanup_close_ int fd = -1; | |
783 | ||
784 | /* First free all secondary fields */ | |
785 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
786 | ||
787 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
788 | if (fd < 0) | |
789 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
790 | ||
791 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
792 | ||
793 | (void) unlink(sa.un.sun_path); | |
794 | ||
795 | /* Only allow root to connect to this socket */ | |
796 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 797 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
798 | if (r < 0) |
799 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
800 | ||
801 | m->cgroups_agent_fd = fd; | |
802 | fd = -1; | |
803 | } | |
804 | ||
805 | if (!m->cgroups_agent_event_source) { | |
806 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
807 | if (r < 0) | |
808 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
809 | ||
810 | /* Process cgroups notifications early, but after having processed service notification messages or | |
811 | * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, | |
812 | * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of | |
813 | * cgroup inotify for the unified cgroup stuff. */ | |
814 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5); | |
815 | if (r < 0) | |
816 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
817 | ||
818 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
819 | } | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
00d9ef85 LP |
824 | static int manager_setup_user_lookup_fd(Manager *m) { |
825 | int r; | |
826 | ||
827 | assert(m); | |
828 | ||
829 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
830 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
831 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
832 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
833 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
834 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
835 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
836 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
837 | * this purpose. | |
838 | * | |
839 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
840 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
841 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
842 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
843 | * | |
844 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
845 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
846 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
847 | ||
848 | if (m->user_lookup_fds[0] < 0) { | |
849 | ||
850 | /* Free all secondary fields */ | |
851 | safe_close_pair(m->user_lookup_fds); | |
852 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
853 | ||
854 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
855 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
856 | ||
857 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
858 | } | |
859 | ||
860 | if (!m->user_lookup_event_source) { | |
861 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
862 | if (r < 0) | |
863 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
864 | ||
865 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
866 | * resolutions */ | |
867 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-8); | |
868 | if (r < 0) | |
869 | return log_error_errno(errno, "Failed to set priority ot user lookup event source: %m"); | |
870 | ||
871 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
872 | } | |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
d86f9d52 LP |
877 | static int manager_connect_bus(Manager *m, bool reexecuting) { |
878 | bool try_bus_connect; | |
879 | ||
880 | assert(m); | |
881 | ||
0d8c31ff ZJS |
882 | if (m->test_run) |
883 | return 0; | |
884 | ||
d86f9d52 | 885 | try_bus_connect = |
d86f9d52 | 886 | reexecuting || |
463d0d15 | 887 | (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS")); |
d86f9d52 | 888 | |
ff9b60f3 | 889 | /* Try to connect to the buses, if possible. */ |
d86f9d52 LP |
890 | return bus_init(m, try_bus_connect); |
891 | } | |
892 | ||
23a177ef | 893 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 894 | Unit *u; |
23a177ef LP |
895 | unsigned n = 0; |
896 | ||
897 | assert(m); | |
898 | ||
595ed347 MS |
899 | while ((u = m->cleanup_queue)) { |
900 | assert(u->in_cleanup_queue); | |
23a177ef | 901 | |
595ed347 | 902 | unit_free(u); |
23a177ef LP |
903 | n++; |
904 | } | |
905 | ||
906 | return n; | |
907 | } | |
908 | ||
eced69b3 | 909 | enum { |
35b8ca3a | 910 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
911 | GC_OFFSET_UNSURE, /* No clue */ |
912 | GC_OFFSET_GOOD, /* We still need this unit */ | |
913 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
914 | _GC_OFFSET_MAX | |
915 | }; | |
916 | ||
00d9ef85 | 917 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
918 | Iterator i; |
919 | Unit *other; | |
920 | ||
921 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
922 | ||
923 | /* Recursively mark referenced units as GOOD as well */ | |
924 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCES], i) | |
925 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) | |
926 | unit_gc_mark_good(other, gc_marker); | |
927 | } | |
928 | ||
eced69b3 | 929 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 LP |
930 | Iterator i; |
931 | Unit *other; | |
eced69b3 | 932 | bool is_bad; |
701cc384 LP |
933 | |
934 | assert(u); | |
935 | ||
ac155bb8 MS |
936 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
937 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
4892084f | 938 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE || |
ac155bb8 | 939 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) |
701cc384 LP |
940 | return; |
941 | ||
ac155bb8 | 942 | if (u->in_cleanup_queue) |
701cc384 LP |
943 | goto bad; |
944 | ||
945 | if (unit_check_gc(u)) | |
946 | goto good; | |
947 | ||
ac155bb8 | 948 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
949 | |
950 | is_bad = true; | |
951 | ||
ac155bb8 | 952 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
953 | unit_gc_sweep(other, gc_marker); |
954 | ||
ac155bb8 | 955 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 956 | goto good; |
eced69b3 | 957 | |
ac155bb8 | 958 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 959 | is_bad = false; |
701cc384 LP |
960 | } |
961 | ||
eced69b3 LP |
962 | if (is_bad) |
963 | goto bad; | |
964 | ||
965 | /* We were unable to find anything out about this entry, so | |
966 | * let's investigate it later */ | |
ac155bb8 | 967 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
968 | unit_add_to_gc_queue(u); |
969 | return; | |
970 | ||
701cc384 | 971 | bad: |
eced69b3 LP |
972 | /* We definitely know that this one is not useful anymore, so |
973 | * let's mark it for deletion */ | |
ac155bb8 | 974 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 975 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
976 | return; |
977 | ||
978 | good: | |
4892084f | 979 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
980 | } |
981 | ||
c5a97ed1 LP |
982 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
983 | unsigned n = 0, gc_marker; | |
595ed347 | 984 | Unit *u; |
701cc384 LP |
985 | |
986 | assert(m); | |
987 | ||
cf1265e1 | 988 | /* log_debug("Running GC..."); */ |
701cc384 | 989 | |
eced69b3 LP |
990 | m->gc_marker += _GC_OFFSET_MAX; |
991 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 992 | m->gc_marker = 1; |
701cc384 | 993 | |
eced69b3 LP |
994 | gc_marker = m->gc_marker; |
995 | ||
c5a97ed1 | 996 | while ((u = m->gc_unit_queue)) { |
595ed347 | 997 | assert(u->in_gc_queue); |
701cc384 | 998 | |
595ed347 | 999 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1000 | |
c5a97ed1 | 1001 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1002 | u->in_gc_queue = false; |
701cc384 LP |
1003 | |
1004 | n++; | |
1005 | ||
595ed347 MS |
1006 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
1007 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
cc3bc3e6 | 1008 | if (u->id) |
f2341e0a | 1009 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1010 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1011 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1012 | } |
1013 | } | |
1014 | ||
701cc384 LP |
1015 | return n; |
1016 | } | |
1017 | ||
c5a97ed1 LP |
1018 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1019 | unsigned n = 0; | |
1020 | Job *j; | |
1021 | ||
1022 | assert(m); | |
1023 | ||
1024 | while ((j = m->gc_job_queue)) { | |
1025 | assert(j->in_gc_queue); | |
1026 | ||
1027 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1028 | j->in_gc_queue = false; | |
1029 | ||
1030 | n++; | |
1031 | ||
1032 | if (job_check_gc(j)) | |
1033 | continue; | |
1034 | ||
1035 | log_unit_debug(j->unit, "Collecting job."); | |
1036 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1037 | } | |
1038 | ||
1039 | return n; | |
1040 | } | |
1041 | ||
a16e1123 | 1042 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1043 | Unit *u; |
60918275 LP |
1044 | |
1045 | assert(m); | |
1046 | ||
87f0e418 LP |
1047 | while ((u = hashmap_first(m->units))) |
1048 | unit_free(u); | |
964e0949 LP |
1049 | |
1050 | manager_dispatch_cleanup_queue(m); | |
1051 | ||
1052 | assert(!m->load_queue); | |
1053 | assert(!m->run_queue); | |
1054 | assert(!m->dbus_unit_queue); | |
1055 | assert(!m->dbus_job_queue); | |
1056 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1057 | assert(!m->gc_unit_queue); |
1058 | assert(!m->gc_job_queue); | |
964e0949 | 1059 | |
964e0949 LP |
1060 | assert(hashmap_isempty(m->jobs)); |
1061 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1062 | |
1063 | m->n_on_console = 0; | |
1064 | m->n_running_jobs = 0; | |
a16e1123 LP |
1065 | } |
1066 | ||
06d8d842 | 1067 | Manager* manager_free(Manager *m) { |
a16e1123 | 1068 | UnitType c; |
c93ff2e9 | 1069 | int i; |
87f0e418 | 1070 | |
06d8d842 ZJS |
1071 | if (!m) |
1072 | return NULL; | |
a16e1123 LP |
1073 | |
1074 | manager_clear_jobs_and_units(m); | |
23a177ef | 1075 | |
7824bbeb LP |
1076 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
1077 | if (unit_vtable[c]->shutdown) | |
1078 | unit_vtable[c]->shutdown(m); | |
1079 | ||
a16e1123 LP |
1080 | /* If we reexecute ourselves, we keep the root cgroup |
1081 | * around */ | |
c6c18be3 | 1082 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 1083 | |
07a78643 | 1084 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1085 | |
5e8d1c9a | 1086 | bus_done(m); |
ea430986 | 1087 | |
29206d46 LP |
1088 | dynamic_user_vacuum(m, false); |
1089 | hashmap_free(m->dynamic_users); | |
1090 | ||
87f0e418 | 1091 | hashmap_free(m->units); |
4b58153d | 1092 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1093 | hashmap_free(m->jobs); |
5ba6985b LP |
1094 | hashmap_free(m->watch_pids1); |
1095 | hashmap_free(m->watch_pids2); | |
05e343b7 | 1096 | hashmap_free(m->watch_bus); |
9152c765 | 1097 | |
95ae05c0 | 1098 | set_free(m->startup_units); |
f755e3b7 LP |
1099 | set_free(m->failed_units); |
1100 | ||
718db961 LP |
1101 | sd_event_source_unref(m->signal_event_source); |
1102 | sd_event_source_unref(m->notify_event_source); | |
d8fdc620 | 1103 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 LP |
1104 | sd_event_source_unref(m->time_change_event_source); |
1105 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
752b5905 | 1106 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1107 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1108 | |
03e334a1 LP |
1109 | safe_close(m->signal_fd); |
1110 | safe_close(m->notify_fd); | |
d8fdc620 | 1111 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1112 | safe_close(m->time_change_fd); |
00d9ef85 | 1113 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1114 | |
e46b13c8 ZJS |
1115 | manager_close_ask_password(m); |
1116 | ||
718db961 LP |
1117 | manager_close_idle_pipe(m); |
1118 | ||
9670d583 | 1119 | udev_unref(m->udev); |
718db961 | 1120 | sd_event_unref(m->event); |
60918275 | 1121 | |
c952c6ec LP |
1122 | free(m->notify_socket); |
1123 | ||
84e3543e | 1124 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 1125 | strv_free(m->environment); |
036643a2 | 1126 | |
4ad49000 | 1127 | hashmap_free(m->cgroup_unit); |
c6c18be3 | 1128 | set_free_free(m->unit_path_cache); |
33be102a | 1129 | |
664f88a7 LP |
1130 | free(m->switch_root); |
1131 | free(m->switch_root_init); | |
1132 | ||
517d56b1 | 1133 | for (i = 0; i < _RLIMIT_MAX; i++) |
d9814c76 | 1134 | m->rlimit[i] = mfree(m->rlimit[i]); |
c93ff2e9 | 1135 | |
a57f7e2c LP |
1136 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1137 | hashmap_free(m->units_requiring_mounts_for); | |
1138 | ||
00d9ef85 LP |
1139 | hashmap_free(m->uid_refs); |
1140 | hashmap_free(m->gid_refs); | |
1141 | ||
6b430fdb | 1142 | return mfree(m); |
60918275 LP |
1143 | } |
1144 | ||
ba64af90 | 1145 | void manager_enumerate(Manager *m) { |
f50e0a01 | 1146 | UnitType c; |
f50e0a01 LP |
1147 | |
1148 | assert(m); | |
1149 | ||
a16e1123 LP |
1150 | /* Let's ask every type to load all units from disk/kernel |
1151 | * that it might know */ | |
0faacd47 | 1152 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1153 | if (!unit_type_supported(c)) { |
03afec3c | 1154 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1155 | continue; |
a57f7e2c | 1156 | } |
f50e0a01 | 1157 | |
0faacd47 LP |
1158 | if (!unit_vtable[c]->enumerate) |
1159 | continue; | |
1160 | ||
ba64af90 | 1161 | unit_vtable[c]->enumerate(m); |
0faacd47 LP |
1162 | } |
1163 | ||
f50e0a01 | 1164 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1165 | } |
1166 | ||
007c6337 | 1167 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1168 | Iterator i; |
1169 | Unit *u; | |
1170 | char *k; | |
007c6337 | 1171 | int r; |
a16e1123 LP |
1172 | |
1173 | assert(m); | |
f50e0a01 LP |
1174 | |
1175 | /* Then, let's set up their initial state. */ | |
1176 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1177 | ||
1178 | /* ignore aliases */ | |
ac155bb8 | 1179 | if (u->id != k) |
f50e0a01 LP |
1180 | continue; |
1181 | ||
007c6337 LP |
1182 | r = unit_coldplug(u); |
1183 | if (r < 0) | |
1184 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1185 | } |
a16e1123 LP |
1186 | } |
1187 | ||
fe51822e LP |
1188 | static void manager_build_unit_path_cache(Manager *m) { |
1189 | char **i; | |
fe51822e LP |
1190 | int r; |
1191 | ||
1192 | assert(m); | |
1193 | ||
1194 | set_free_free(m->unit_path_cache); | |
1195 | ||
d5099efc | 1196 | m->unit_path_cache = set_new(&string_hash_ops); |
874310b7 | 1197 | if (!m->unit_path_cache) { |
d063a527 LP |
1198 | r = -ENOMEM; |
1199 | goto fail; | |
fe51822e LP |
1200 | } |
1201 | ||
1202 | /* This simply builds a list of files we know exist, so that | |
1203 | * we don't always have to go to disk */ | |
1204 | ||
a3c4eb07 | 1205 | STRV_FOREACH(i, m->lookup_paths.search_path) { |
d063a527 | 1206 | _cleanup_closedir_ DIR *d = NULL; |
fe51822e LP |
1207 | struct dirent *de; |
1208 | ||
bd0af849 ZJS |
1209 | d = opendir(*i); |
1210 | if (!d) { | |
874310b7 | 1211 | if (errno != ENOENT) |
d063a527 | 1212 | log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); |
fe51822e LP |
1213 | continue; |
1214 | } | |
1215 | ||
d063a527 | 1216 | FOREACH_DIRENT(de, d, r = -errno; goto fail) { |
fe51822e LP |
1217 | char *p; |
1218 | ||
605405c6 | 1219 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name); |
44d91056 | 1220 | if (!p) { |
fe51822e LP |
1221 | r = -ENOMEM; |
1222 | goto fail; | |
1223 | } | |
1224 | ||
ef42202a ZJS |
1225 | r = set_consume(m->unit_path_cache, p); |
1226 | if (r < 0) | |
fe51822e | 1227 | goto fail; |
fe51822e | 1228 | } |
fe51822e LP |
1229 | } |
1230 | ||
1231 | return; | |
1232 | ||
1233 | fail: | |
d063a527 LP |
1234 | log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); |
1235 | m->unit_path_cache = set_free_free(m->unit_path_cache); | |
fe51822e LP |
1236 | } |
1237 | ||
9ff1a6f1 | 1238 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1239 | Iterator i; |
9ff1a6f1 | 1240 | Unit *u; |
9588bc32 LP |
1241 | |
1242 | assert(m); | |
1243 | ||
1244 | HASHMAP_FOREACH(u, m->units, i) { | |
1245 | ||
1246 | if (fdset_size(fds) <= 0) | |
1247 | break; | |
1248 | ||
9ff1a6f1 LP |
1249 | if (!UNIT_VTABLE(u)->distribute_fds) |
1250 | continue; | |
9588bc32 | 1251 | |
9ff1a6f1 LP |
1252 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1253 | } | |
9588bc32 LP |
1254 | } |
1255 | ||
a16e1123 LP |
1256 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
1257 | int r, q; | |
1258 | ||
1259 | assert(m); | |
1260 | ||
4943d143 | 1261 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
1262 | if (r < 0) |
1263 | return r; | |
5a1e9937 | 1264 | |
39591351 | 1265 | /* Make sure the transient directory always exists, so that it remains in the search path */ |
a63ee407 ZJS |
1266 | if (!m->test_run) { |
1267 | r = mkdir_p_label(m->lookup_paths.transient, 0755); | |
1268 | if (r < 0) | |
1269 | return r; | |
1270 | } | |
39591351 | 1271 | |
a3c4eb07 LP |
1272 | dual_timestamp_get(&m->generators_start_timestamp); |
1273 | r = manager_run_generators(m); | |
1274 | dual_timestamp_get(&m->generators_finish_timestamp); | |
07719a21 LP |
1275 | if (r < 0) |
1276 | return r; | |
1277 | ||
a1453343 | 1278 | lookup_paths_reduce(&m->lookup_paths); |
fe51822e LP |
1279 | manager_build_unit_path_cache(m); |
1280 | ||
9f611ad8 LP |
1281 | /* If we will deserialize make sure that during enumeration |
1282 | * this is already known, so we increase the counter here | |
1283 | * already */ | |
1284 | if (serialization) | |
313cefa1 | 1285 | m->n_reloading++; |
9f611ad8 | 1286 | |
a16e1123 | 1287 | /* First, enumerate what we can from all config files */ |
718db961 | 1288 | dual_timestamp_get(&m->units_load_start_timestamp); |
ba64af90 | 1289 | manager_enumerate(m); |
718db961 | 1290 | dual_timestamp_get(&m->units_load_finish_timestamp); |
a16e1123 LP |
1291 | |
1292 | /* Second, deserialize if there is something to deserialize */ | |
1cd974ed ZJS |
1293 | if (serialization) |
1294 | r = manager_deserialize(m, serialization, fds); | |
a16e1123 | 1295 | |
01e10de3 LP |
1296 | /* Any fds left? Find some unit which wants them. This is |
1297 | * useful to allow container managers to pass some file | |
1298 | * descriptors to us pre-initialized. This enables | |
1299 | * socket-based activation of entire containers. */ | |
9ff1a6f1 | 1300 | manager_distribute_fds(m, fds); |
01e10de3 | 1301 | |
d86f9d52 LP |
1302 | /* We might have deserialized the notify fd, but if we didn't |
1303 | * then let's create the bus now */ | |
1cd974ed ZJS |
1304 | q = manager_setup_notify(m); |
1305 | if (q < 0 && r == 0) | |
1306 | r = q; | |
d86f9d52 | 1307 | |
d8fdc620 LP |
1308 | q = manager_setup_cgroups_agent(m); |
1309 | if (q < 0 && r == 0) | |
1310 | r = q; | |
1311 | ||
00d9ef85 LP |
1312 | q = manager_setup_user_lookup_fd(m); |
1313 | if (q < 0 && r == 0) | |
1314 | r = q; | |
1315 | ||
232f6754 | 1316 | /* Let's connect to the bus now. */ |
05a98afd LP |
1317 | (void) manager_connect_bus(m, !!serialization); |
1318 | ||
1319 | (void) bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); | |
1320 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
e3dd987c | 1321 | |
a16e1123 | 1322 | /* Third, fire things up! */ |
007c6337 | 1323 | manager_coldplug(m); |
a16e1123 | 1324 | |
29206d46 LP |
1325 | /* Release any dynamic users no longer referenced */ |
1326 | dynamic_user_vacuum(m, true); | |
1327 | ||
00d9ef85 LP |
1328 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
1329 | manager_vacuum_uid_refs(m); | |
1330 | manager_vacuum_gid_refs(m); | |
1331 | ||
9f611ad8 | 1332 | if (serialization) { |
a7556052 | 1333 | assert(m->n_reloading > 0); |
313cefa1 | 1334 | m->n_reloading--; |
71445ae7 LP |
1335 | |
1336 | /* Let's wait for the UnitNew/JobNew messages being | |
1337 | * sent, before we notify that the reload is | |
1338 | * finished */ | |
1339 | m->send_reloading_done = true; | |
9f611ad8 LP |
1340 | } |
1341 | ||
a16e1123 | 1342 | return r; |
f50e0a01 LP |
1343 | } |
1344 | ||
4bd29fe5 | 1345 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) { |
e5b5ae50 | 1346 | int r; |
7527cb52 | 1347 | Transaction *tr; |
e5b5ae50 LP |
1348 | |
1349 | assert(m); | |
1350 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1351 | assert(unit); |
e5b5ae50 | 1352 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1353 | |
7358dc02 ZJS |
1354 | if (mode == JOB_ISOLATE && type != JOB_START) |
1355 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
c497c7a9 | 1356 | |
7358dc02 ZJS |
1357 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1358 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
2528a7a6 | 1359 | |
f2341e0a | 1360 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1361 | |
c6497ccb | 1362 | type = job_type_collapse(type, unit); |
e0209d83 | 1363 | |
23ade460 | 1364 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1365 | if (!tr) |
1366 | return -ENOMEM; | |
11dd41ce | 1367 | |
4bd29fe5 | 1368 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
7527cb52 | 1369 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, |
b94fbd30 | 1370 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
1371 | if (r < 0) |
1372 | goto tr_abort; | |
c497c7a9 | 1373 | |
7527cb52 MS |
1374 | if (mode == JOB_ISOLATE) { |
1375 | r = transaction_add_isolate_jobs(tr, m); | |
1376 | if (r < 0) | |
1377 | goto tr_abort; | |
1378 | } | |
1379 | ||
1380 | r = transaction_activate(tr, m, mode, e); | |
1381 | if (r < 0) | |
1382 | goto tr_abort; | |
e5b5ae50 | 1383 | |
f2341e0a | 1384 | log_unit_debug(unit, |
66870f90 ZJS |
1385 | "Enqueued job %s/%s as %u", unit->id, |
1386 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1387 | |
e5b5ae50 | 1388 | if (_ret) |
b94fbd30 | 1389 | *_ret = tr->anchor_job; |
60918275 | 1390 | |
7527cb52 | 1391 | transaction_free(tr); |
e5b5ae50 | 1392 | return 0; |
7527cb52 MS |
1393 | |
1394 | tr_abort: | |
1395 | transaction_abort(tr); | |
1396 | transaction_free(tr); | |
1397 | return r; | |
e5b5ae50 | 1398 | } |
60918275 | 1399 | |
53f18416 | 1400 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) { |
28247076 LP |
1401 | Unit *unit; |
1402 | int r; | |
1403 | ||
1404 | assert(m); | |
1405 | assert(type < _JOB_TYPE_MAX); | |
1406 | assert(name); | |
1407 | assert(mode < _JOB_MODE_MAX); | |
1408 | ||
c3090674 LP |
1409 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1410 | if (r < 0) | |
28247076 LP |
1411 | return r; |
1412 | ||
53f18416 LP |
1413 | return manager_add_job(m, type, unit, mode, e, ret); |
1414 | } | |
1415 | ||
1416 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) { | |
4afd3348 | 1417 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1418 | int r; |
1419 | ||
1420 | assert(m); | |
1421 | assert(type < _JOB_TYPE_MAX); | |
1422 | assert(name); | |
1423 | assert(mode < _JOB_MODE_MAX); | |
1424 | ||
1425 | r = manager_add_job_by_name(m, type, name, mode, &error, ret); | |
1426 | if (r < 0) | |
1427 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1428 | ||
1429 | return r; | |
28247076 LP |
1430 | } |
1431 | ||
60918275 LP |
1432 | Job *manager_get_job(Manager *m, uint32_t id) { |
1433 | assert(m); | |
1434 | ||
1435 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1436 | } | |
1437 | ||
87f0e418 | 1438 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1439 | assert(m); |
1440 | assert(name); | |
1441 | ||
87f0e418 | 1442 | return hashmap_get(m->units, name); |
60918275 LP |
1443 | } |
1444 | ||
c1e1601e | 1445 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1446 | Unit *u; |
c1e1601e | 1447 | unsigned n = 0; |
60918275 LP |
1448 | |
1449 | assert(m); | |
1450 | ||
223dabab LP |
1451 | /* Make sure we are not run recursively */ |
1452 | if (m->dispatching_load_queue) | |
c1e1601e | 1453 | return 0; |
223dabab LP |
1454 | |
1455 | m->dispatching_load_queue = true; | |
1456 | ||
87f0e418 | 1457 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1458 | * tries to load its data until the queue is empty */ |
1459 | ||
595ed347 MS |
1460 | while ((u = m->load_queue)) { |
1461 | assert(u->in_load_queue); | |
034c6ed7 | 1462 | |
595ed347 | 1463 | unit_load(u); |
c1e1601e | 1464 | n++; |
60918275 LP |
1465 | } |
1466 | ||
223dabab | 1467 | m->dispatching_load_queue = false; |
c1e1601e | 1468 | return n; |
60918275 LP |
1469 | } |
1470 | ||
c2756a68 LP |
1471 | int manager_load_unit_prepare( |
1472 | Manager *m, | |
1473 | const char *name, | |
1474 | const char *path, | |
718db961 | 1475 | sd_bus_error *e, |
c2756a68 LP |
1476 | Unit **_ret) { |
1477 | ||
87f0e418 | 1478 | Unit *ret; |
7d17cfbc | 1479 | UnitType t; |
60918275 LP |
1480 | int r; |
1481 | ||
1482 | assert(m); | |
9e2f7c11 | 1483 | assert(name || path); |
60918275 | 1484 | |
db06e3b6 LP |
1485 | /* This will prepare the unit for loading, but not actually |
1486 | * load anything from disk. */ | |
0301abf4 | 1487 | |
718db961 LP |
1488 | if (path && !is_path(path)) |
1489 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 LP |
1490 | |
1491 | if (!name) | |
2b6bf07d | 1492 | name = basename(path); |
9e2f7c11 | 1493 | |
7d17cfbc MS |
1494 | t = unit_name_to_type(name); |
1495 | ||
5d512d54 LN |
1496 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1497 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1498 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1499 | ||
718db961 | 1500 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1501 | } |
60918275 | 1502 | |
7d17cfbc MS |
1503 | ret = manager_get_unit(m, name); |
1504 | if (ret) { | |
034c6ed7 | 1505 | *_ret = ret; |
413d6313 | 1506 | return 1; |
034c6ed7 | 1507 | } |
60918275 | 1508 | |
7d17cfbc MS |
1509 | ret = unit_new(m, unit_vtable[t]->object_size); |
1510 | if (!ret) | |
60918275 LP |
1511 | return -ENOMEM; |
1512 | ||
7d17cfbc | 1513 | if (path) { |
ac155bb8 MS |
1514 | ret->fragment_path = strdup(path); |
1515 | if (!ret->fragment_path) { | |
0301abf4 LP |
1516 | unit_free(ret); |
1517 | return -ENOMEM; | |
1518 | } | |
7d17cfbc | 1519 | } |
0301abf4 | 1520 | |
1058cbf2 ZJS |
1521 | r = unit_add_name(ret, name); |
1522 | if (r < 0) { | |
87f0e418 | 1523 | unit_free(ret); |
1ffba6fe | 1524 | return r; |
60918275 LP |
1525 | } |
1526 | ||
87f0e418 | 1527 | unit_add_to_load_queue(ret); |
c1e1601e | 1528 | unit_add_to_dbus_queue(ret); |
949061f0 | 1529 | unit_add_to_gc_queue(ret); |
c1e1601e | 1530 | |
db06e3b6 LP |
1531 | if (_ret) |
1532 | *_ret = ret; | |
1533 | ||
1534 | return 0; | |
1535 | } | |
1536 | ||
c2756a68 LP |
1537 | int manager_load_unit( |
1538 | Manager *m, | |
1539 | const char *name, | |
1540 | const char *path, | |
718db961 | 1541 | sd_bus_error *e, |
c2756a68 LP |
1542 | Unit **_ret) { |
1543 | ||
db06e3b6 LP |
1544 | int r; |
1545 | ||
1546 | assert(m); | |
1547 | ||
1548 | /* This will load the service information files, but not actually | |
1549 | * start any services or anything. */ | |
1550 | ||
c3090674 LP |
1551 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
1552 | if (r != 0) | |
db06e3b6 LP |
1553 | return r; |
1554 | ||
f50e0a01 | 1555 | manager_dispatch_load_queue(m); |
60918275 | 1556 | |
9e2f7c11 | 1557 | if (_ret) |
413d6313 | 1558 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1559 | |
60918275 LP |
1560 | return 0; |
1561 | } | |
a66d02c3 | 1562 | |
cea8e32e | 1563 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1564 | Iterator i; |
a66d02c3 LP |
1565 | Job *j; |
1566 | ||
1567 | assert(s); | |
1568 | assert(f); | |
1569 | ||
034c6ed7 | 1570 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1571 | job_dump(j, f, prefix); |
a66d02c3 LP |
1572 | } |
1573 | ||
87f0e418 | 1574 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1575 | Iterator i; |
87f0e418 | 1576 | Unit *u; |
11dd41ce | 1577 | const char *t; |
a66d02c3 LP |
1578 | |
1579 | assert(s); | |
1580 | assert(f); | |
1581 | ||
87f0e418 | 1582 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 1583 | if (u->id == t) |
87f0e418 | 1584 | unit_dump(u, f, prefix); |
a66d02c3 | 1585 | } |
7fad411c LP |
1586 | |
1587 | void manager_clear_jobs(Manager *m) { | |
1588 | Job *j; | |
1589 | ||
1590 | assert(m); | |
1591 | ||
7fad411c | 1592 | while ((j = hashmap_first(m->jobs))) |
5273510e | 1593 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 1594 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 1595 | } |
83c60c9f | 1596 | |
752b5905 LP |
1597 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
1598 | Manager *m = userdata; | |
83c60c9f | 1599 | Job *j; |
034c6ed7 | 1600 | |
752b5905 LP |
1601 | assert(source); |
1602 | assert(m); | |
9152c765 | 1603 | |
034c6ed7 | 1604 | while ((j = m->run_queue)) { |
ac1135be | 1605 | assert(j->installed); |
034c6ed7 LP |
1606 | assert(j->in_run_queue); |
1607 | ||
1608 | job_run_and_invalidate(j); | |
9152c765 | 1609 | } |
034c6ed7 | 1610 | |
a0b64226 | 1611 | if (m->n_running_jobs > 0) |
03b717a3 MS |
1612 | manager_watch_jobs_in_progress(m); |
1613 | ||
31a7eb86 ZJS |
1614 | if (m->n_on_console > 0) |
1615 | manager_watch_idle_pipe(m); | |
1616 | ||
752b5905 | 1617 | return 1; |
c1e1601e LP |
1618 | } |
1619 | ||
9588bc32 | 1620 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
c1e1601e | 1621 | Job *j; |
595ed347 | 1622 | Unit *u; |
c1e1601e LP |
1623 | unsigned n = 0; |
1624 | ||
1625 | assert(m); | |
1626 | ||
1627 | if (m->dispatching_dbus_queue) | |
1628 | return 0; | |
1629 | ||
1630 | m->dispatching_dbus_queue = true; | |
1631 | ||
595ed347 MS |
1632 | while ((u = m->dbus_unit_queue)) { |
1633 | assert(u->in_dbus_queue); | |
c1e1601e | 1634 | |
595ed347 | 1635 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1636 | n++; |
1637 | } | |
1638 | ||
1639 | while ((j = m->dbus_job_queue)) { | |
1640 | assert(j->in_dbus_queue); | |
1641 | ||
1642 | bus_job_send_change_signal(j); | |
1643 | n++; | |
1644 | } | |
1645 | ||
1646 | m->dispatching_dbus_queue = false; | |
71445ae7 LP |
1647 | |
1648 | if (m->send_reloading_done) { | |
1649 | m->send_reloading_done = false; | |
1650 | ||
718db961 | 1651 | bus_manager_send_reloading(m, false); |
71445ae7 LP |
1652 | } |
1653 | ||
718db961 LP |
1654 | if (m->queued_message) |
1655 | bus_send_queued_message(m); | |
1656 | ||
c1e1601e | 1657 | return n; |
9152c765 LP |
1658 | } |
1659 | ||
d8fdc620 LP |
1660 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1661 | Manager *m = userdata; | |
1662 | char buf[PATH_MAX+1]; | |
1663 | ssize_t n; | |
1664 | ||
1665 | n = recv(fd, buf, sizeof(buf), 0); | |
1666 | if (n < 0) | |
1667 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
1668 | if (n == 0) { | |
1669 | log_error("Got zero-length cgroups agent message, ignoring."); | |
1670 | return 0; | |
1671 | } | |
1672 | if ((size_t) n >= sizeof(buf)) { | |
1673 | log_error("Got overly long cgroups agent message, ignoring."); | |
1674 | return 0; | |
1675 | } | |
1676 | ||
1677 | if (memchr(buf, 0, n)) { | |
1678 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
1679 | return 0; | |
1680 | } | |
1681 | buf[n] = 0; | |
1682 | ||
1683 | manager_notify_cgroup_empty(m, buf); | |
1684 | bus_forward_agent_released(m, buf); | |
1685 | ||
1686 | return 0; | |
1687 | } | |
1688 | ||
8523bf7d | 1689 | static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, FDSet *fds) { |
5ba6985b LP |
1690 | _cleanup_strv_free_ char **tags = NULL; |
1691 | ||
1692 | assert(m); | |
1693 | assert(u); | |
1694 | assert(buf); | |
5ba6985b LP |
1695 | |
1696 | tags = strv_split(buf, "\n\r"); | |
1697 | if (!tags) { | |
1698 | log_oom(); | |
1699 | return; | |
1700 | } | |
1701 | ||
5ba6985b | 1702 | if (UNIT_VTABLE(u)->notify_message) |
a354329f | 1703 | UNIT_VTABLE(u)->notify_message(u, pid, tags, fds); |
a86b7675 ZJS |
1704 | else if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
1705 | _cleanup_free_ char *x = NULL, *y = NULL; | |
1706 | ||
1707 | x = cescape(buf); | |
1708 | if (x) | |
1709 | y = ellipsize(x, 20, 90); | |
1710 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); | |
1711 | } | |
5ba6985b LP |
1712 | } |
1713 | ||
718db961 | 1714 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 1715 | |
b215b0ed | 1716 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 1717 | Manager *m = userdata; |
b215b0ed DH |
1718 | char buf[NOTIFY_BUFFER_MAX+1]; |
1719 | struct iovec iovec = { | |
1720 | .iov_base = buf, | |
1721 | .iov_len = sizeof(buf)-1, | |
1722 | }; | |
1723 | union { | |
1724 | struct cmsghdr cmsghdr; | |
1725 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1726 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1727 | } control = {}; | |
1728 | struct msghdr msghdr = { | |
1729 | .msg_iov = &iovec, | |
1730 | .msg_iovlen = 1, | |
1731 | .msg_control = &control, | |
1732 | .msg_controllen = sizeof(control), | |
1733 | }; | |
1734 | ||
1735 | struct cmsghdr *cmsg; | |
1736 | struct ucred *ucred = NULL; | |
b215b0ed DH |
1737 | Unit *u1, *u2, *u3; |
1738 | int r, *fd_array = NULL; | |
1739 | unsigned n_fds = 0; | |
8c47c732 LP |
1740 | ssize_t n; |
1741 | ||
1742 | assert(m); | |
718db961 LP |
1743 | assert(m->notify_fd == fd); |
1744 | ||
1745 | if (revents != EPOLLIN) { | |
1746 | log_warning("Got unexpected poll event for notify fd."); | |
1747 | return 0; | |
1748 | } | |
8c47c732 | 1749 | |
045a3d59 | 1750 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
b215b0ed | 1751 | if (n < 0) { |
c55ae51e LP |
1752 | if (IN_SET(errno, EAGAIN, EINTR)) |
1753 | return 0; /* Spurious wakeup, try again */ | |
8c47c732 | 1754 | |
c55ae51e LP |
1755 | /* If this is any other, real error, then let's stop processing this socket. This of course means we |
1756 | * won't take notification messages anymore, but that's still better than busy looping around this: | |
1757 | * being woken up over and over again but being unable to actually read the message off the socket. */ | |
1758 | return log_error_errno(errno, "Failed to receive notification message: %m"); | |
b215b0ed | 1759 | } |
a354329f | 1760 | |
b215b0ed DH |
1761 | CMSG_FOREACH(cmsg, &msghdr) { |
1762 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 1763 | |
b215b0ed DH |
1764 | fd_array = (int*) CMSG_DATA(cmsg); |
1765 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 1766 | |
b215b0ed DH |
1767 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
1768 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1769 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 1770 | |
b215b0ed | 1771 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 1772 | } |
b215b0ed | 1773 | } |
a354329f | 1774 | |
b215b0ed DH |
1775 | if (n_fds > 0) { |
1776 | assert(fd_array); | |
a354329f | 1777 | |
b215b0ed DH |
1778 | r = fdset_new_array(&fds, fd_array, n_fds); |
1779 | if (r < 0) { | |
1780 | close_many(fd_array, n_fds); | |
9987750e FB |
1781 | log_oom(); |
1782 | return 0; | |
a354329f | 1783 | } |
b215b0ed | 1784 | } |
8c47c732 | 1785 | |
b215b0ed DH |
1786 | if (!ucred || ucred->pid <= 0) { |
1787 | log_warning("Received notify message without valid credentials. Ignoring."); | |
1788 | return 0; | |
1789 | } | |
8c47c732 | 1790 | |
045a3d59 | 1791 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
1792 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
1793 | return 0; | |
1794 | } | |
8c47c732 | 1795 | |
875ca88d LP |
1796 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
1797 | * trailing NUL byte in the message, but don't expect it. */ | |
1798 | if (n > 1 && memchr(buf, 0, n-1)) { | |
1799 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
1800 | return 0; | |
1801 | } | |
1802 | ||
1803 | /* Make sure it's NUL-terminated. */ | |
b215b0ed | 1804 | buf[n] = 0; |
8c47c732 | 1805 | |
b215b0ed DH |
1806 | /* Notify every unit that might be interested, but try |
1807 | * to avoid notifying the same one multiple times. */ | |
1808 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); | |
c4bee3c4 | 1809 | if (u1) |
8523bf7d | 1810 | manager_invoke_notify_message(m, u1, ucred->pid, buf, fds); |
5ba6985b | 1811 | |
b215b0ed | 1812 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1813 | if (u2 && u2 != u1) |
8523bf7d | 1814 | manager_invoke_notify_message(m, u2, ucred->pid, buf, fds); |
5ba6985b | 1815 | |
b215b0ed | 1816 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1817 | if (u3 && u3 != u2 && u3 != u1) |
8523bf7d | 1818 | manager_invoke_notify_message(m, u3, ucred->pid, buf, fds); |
8c47c732 | 1819 | |
c4bee3c4 | 1820 | if (!u1 && !u2 && !u3) |
b215b0ed | 1821 | log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); |
a354329f | 1822 | |
b215b0ed | 1823 | if (fdset_size(fds) > 0) |
5fd2c135 | 1824 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
1825 | |
1826 | return 0; | |
1827 | } | |
1828 | ||
96d66d89 | 1829 | static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) { |
36f20ae3 KW |
1830 | uint64_t iteration; |
1831 | ||
5ba6985b LP |
1832 | assert(m); |
1833 | assert(u); | |
1834 | assert(si); | |
1835 | ||
36f20ae3 KW |
1836 | sd_event_get_iteration(m->event, &iteration); |
1837 | ||
f2341e0a | 1838 | log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); |
5ba6985b LP |
1839 | |
1840 | unit_unwatch_pid(u, si->si_pid); | |
e57051f5 | 1841 | |
36f20ae3 | 1842 | if (UNIT_VTABLE(u)->sigchld_event) { |
ccc2c98e LN |
1843 | if (set_size(u->pids) <= 1 || |
1844 | iteration != u->sigchldgen || | |
1845 | unit_main_pid(u) == si->si_pid || | |
1846 | unit_control_pid(u) == si->si_pid) { | |
36f20ae3 KW |
1847 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); |
1848 | u->sigchldgen = iteration; | |
1849 | } else | |
1e706c8d | 1850 | log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids)); |
36f20ae3 | 1851 | } |
5ba6985b LP |
1852 | } |
1853 | ||
034c6ed7 | 1854 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1855 | assert(m); |
1856 | ||
1857 | for (;;) { | |
b92bea5d | 1858 | siginfo_t si = {}; |
9152c765 | 1859 | |
4112df16 LP |
1860 | /* First we call waitd() for a PID and do not reap the |
1861 | * zombie. That way we can still access /proc/$PID for | |
1862 | * it while it is a zombie. */ | |
1863 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1864 | |
1865 | if (errno == ECHILD) | |
1866 | break; | |
1867 | ||
4112df16 LP |
1868 | if (errno == EINTR) |
1869 | continue; | |
1870 | ||
9152c765 | 1871 | return -errno; |
acbb0225 | 1872 | } |
9152c765 | 1873 | |
4112df16 | 1874 | if (si.si_pid <= 0) |
9152c765 LP |
1875 | break; |
1876 | ||
15d5d9d9 | 1877 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
7fd1b19b | 1878 | _cleanup_free_ char *name = NULL; |
70af4d17 | 1879 | Unit *u1, *u2, *u3; |
4112df16 | 1880 | |
87d2c1ff | 1881 | get_process_comm(si.si_pid, &name); |
4112df16 | 1882 | |
5ba6985b LP |
1883 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", |
1884 | si.si_pid, strna(name), | |
1885 | sigchld_code_to_string(si.si_code), | |
1886 | si.si_status, | |
1887 | strna(si.si_code == CLD_EXITED | |
1888 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1889 | : signal_to_string(si.si_status))); | |
1890 | ||
1891 | /* And now figure out the unit this belongs | |
1892 | * to, it might be multiple... */ | |
b3ac818b | 1893 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
70af4d17 LP |
1894 | if (u1) |
1895 | invoke_sigchld_event(m, u1, &si); | |
fea72cc0 | 1896 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
1897 | if (u2 && u2 != u1) |
1898 | invoke_sigchld_event(m, u2, &si); | |
fea72cc0 | 1899 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
1900 | if (u3 && u3 != u2 && u3 != u1) |
1901 | invoke_sigchld_event(m, u3, &si); | |
5ba6985b | 1902 | } |
8c47c732 | 1903 | |
4112df16 LP |
1904 | /* And now, we actually reap the zombie. */ |
1905 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1906 | if (errno == EINTR) | |
1907 | continue; | |
1908 | ||
1909 | return -errno; | |
1910 | } | |
9152c765 LP |
1911 | } |
1912 | ||
1913 | return 0; | |
1914 | } | |
1915 | ||
7d793605 | 1916 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 1917 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 1918 | int r; |
398ef8ba | 1919 | |
f2341e0a | 1920 | log_debug("Activating special unit %s", name); |
1e001f52 | 1921 | |
4bd29fe5 | 1922 | r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL); |
bd0af849 | 1923 | if (r < 0) |
f2341e0a | 1924 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
a1b256b0 LP |
1925 | |
1926 | return r; | |
28247076 LP |
1927 | } |
1928 | ||
24dd31c1 LN |
1929 | static void manager_handle_ctrl_alt_del(Manager *m) { |
1930 | /* If the user presses C-A-D more than | |
1931 | * 7 times within 2s, we reboot/shutdown immediately, | |
1932 | * unless it was disabled in system.conf */ | |
1933 | ||
ae8c7939 | 1934 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 1935 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 LN |
1936 | else |
1937 | emergency_action(m, m->cad_burst_action, NULL, | |
1938 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); | |
24dd31c1 LN |
1939 | } |
1940 | ||
718db961 LP |
1941 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1942 | Manager *m = userdata; | |
9152c765 LP |
1943 | ssize_t n; |
1944 | struct signalfd_siginfo sfsi; | |
1945 | bool sigchld = false; | |
dacd6cee | 1946 | int r; |
9152c765 LP |
1947 | |
1948 | assert(m); | |
718db961 LP |
1949 | assert(m->signal_fd == fd); |
1950 | ||
1951 | if (revents != EPOLLIN) { | |
1952 | log_warning("Got unexpected events from signal file descriptor."); | |
1953 | return 0; | |
1954 | } | |
9152c765 LP |
1955 | |
1956 | for (;;) { | |
718db961 | 1957 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
57cb4adf | 1958 | if (n != sizeof(sfsi)) { |
8f4d6401 ZJS |
1959 | if (n >= 0) { |
1960 | log_warning("Truncated read from signal fd (%zu bytes)!", n); | |
1961 | return 0; | |
1962 | } | |
9152c765 | 1963 | |
8f4d6401 | 1964 | if (IN_SET(errno, EINTR, EAGAIN)) |
acbb0225 | 1965 | break; |
9152c765 | 1966 | |
8f4d6401 ZJS |
1967 | /* We return an error here, which will kill this handler, |
1968 | * to avoid a busy loop on read error. */ | |
1969 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
9152c765 LP |
1970 | } |
1971 | ||
4daf54a8 | 1972 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
463d0d15 | 1973 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) |
4daf54a8 ZJS |
1974 | ? LOG_DEBUG : LOG_INFO, |
1975 | &sfsi); | |
1e001f52 | 1976 | |
b9cd2ec1 LP |
1977 | switch (sfsi.ssi_signo) { |
1978 | ||
4112df16 | 1979 | case SIGCHLD: |
9152c765 | 1980 | sigchld = true; |
b9cd2ec1 LP |
1981 | break; |
1982 | ||
6632c602 | 1983 | case SIGTERM: |
463d0d15 | 1984 | if (MANAGER_IS_SYSTEM(m)) { |
db06e3b6 LP |
1985 | /* This is for compatibility with the |
1986 | * original sysvinit */ | |
e11dc4a2 | 1987 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1988 | break; |
1989 | } | |
84e9af1e | 1990 | |
a1b256b0 | 1991 | /* Fall through */ |
e11dc4a2 LP |
1992 | |
1993 | case SIGINT: | |
463d0d15 | 1994 | if (MANAGER_IS_SYSTEM(m)) { |
24dd31c1 | 1995 | manager_handle_ctrl_alt_del(m); |
84e9af1e LP |
1996 | break; |
1997 | } | |
1998 | ||
a1b256b0 | 1999 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 2000 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
2001 | m->exit_code = MANAGER_EXIT; |
2002 | return 0; | |
2003 | } | |
2004 | ||
2005 | break; | |
84e9af1e | 2006 | |
28247076 | 2007 | case SIGWINCH: |
463d0d15 | 2008 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 2009 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2010 | |
28247076 LP |
2011 | /* This is a nop on non-init */ |
2012 | break; | |
84e9af1e | 2013 | |
28247076 | 2014 | case SIGPWR: |
463d0d15 | 2015 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 2016 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 2017 | |
28247076 | 2018 | /* This is a nop on non-init */ |
84e9af1e | 2019 | break; |
6632c602 | 2020 | |
1005d14f | 2021 | case SIGUSR1: { |
57ee42ce LP |
2022 | Unit *u; |
2023 | ||
2024 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2025 | ||
2026 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2027 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2028 | bus_init(m, true); |
57ee42ce LP |
2029 | } |
2030 | ||
2031 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2032 | log_info("Loading D-Bus service..."); | |
7d793605 | 2033 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2034 | } |
2035 | ||
2036 | break; | |
2037 | } | |
2038 | ||
2149e37c | 2039 | case SIGUSR2: { |
718db961 LP |
2040 | _cleanup_free_ char *dump = NULL; |
2041 | _cleanup_fclose_ FILE *f = NULL; | |
2149e37c LP |
2042 | size_t size; |
2043 | ||
718db961 LP |
2044 | f = open_memstream(&dump, &size); |
2045 | if (!f) { | |
dacd6cee | 2046 | log_warning_errno(errno, "Failed to allocate memory stream: %m"); |
2149e37c LP |
2047 | break; |
2048 | } | |
2049 | ||
2050 | manager_dump_units(m, f, "\t"); | |
2051 | manager_dump_jobs(m, f, "\t"); | |
2052 | ||
dacd6cee LP |
2053 | r = fflush_and_check(f); |
2054 | if (r < 0) { | |
2055 | log_warning_errno(r, "Failed to write status stream: %m"); | |
b2cdc666 DM |
2056 | break; |
2057 | } | |
2058 | ||
2149e37c | 2059 | log_dump(LOG_INFO, dump); |
1005d14f | 2060 | break; |
2149e37c | 2061 | } |
1005d14f | 2062 | |
a16e1123 LP |
2063 | case SIGHUP: |
2064 | m->exit_code = MANAGER_RELOAD; | |
2065 | break; | |
2066 | ||
7d793605 | 2067 | default: { |
253ee27a | 2068 | |
0003d1ab LP |
2069 | /* Starting SIGRTMIN+0 */ |
2070 | static const char * const target_table[] = { | |
7d793605 LP |
2071 | [0] = SPECIAL_DEFAULT_TARGET, |
2072 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 2073 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
2074 | [3] = SPECIAL_HALT_TARGET, |
2075 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
2076 | [5] = SPECIAL_REBOOT_TARGET, |
2077 | [6] = SPECIAL_KEXEC_TARGET | |
2078 | }; | |
2079 | ||
2080 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2081 | static const ManagerExitCode code_table[] = { | |
2082 | [0] = MANAGER_HALT, | |
2083 | [1] = MANAGER_POWEROFF, | |
2084 | [2] = MANAGER_REBOOT, | |
2085 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2086 | }; |
2087 | ||
2088 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 2089 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
2090 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
2091 | manager_start_target(m, target_table[idx], | |
2092 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
2093 | break; |
2094 | } | |
2095 | ||
0003d1ab LP |
2096 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2097 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2098 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2099 | break; | |
2100 | } | |
2101 | ||
0658666b LP |
2102 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2103 | ||
2104 | case 20: | |
d450b6f2 | 2105 | manager_set_show_status(m, SHOW_STATUS_YES); |
0658666b LP |
2106 | break; |
2107 | ||
2108 | case 21: | |
d450b6f2 | 2109 | manager_set_show_status(m, SHOW_STATUS_NO); |
0658666b LP |
2110 | break; |
2111 | ||
253ee27a LP |
2112 | case 22: |
2113 | log_set_max_level(LOG_DEBUG); | |
4cee3a78 | 2114 | log_info("Setting log level to debug."); |
253ee27a LP |
2115 | break; |
2116 | ||
2117 | case 23: | |
2118 | log_set_max_level(LOG_INFO); | |
4cee3a78 | 2119 | log_info("Setting log level to info."); |
253ee27a LP |
2120 | break; |
2121 | ||
600b704e | 2122 | case 24: |
463d0d15 | 2123 | if (MANAGER_IS_USER(m)) { |
600b704e LP |
2124 | m->exit_code = MANAGER_EXIT; |
2125 | return 0; | |
2126 | } | |
2127 | ||
2128 | /* This is a nop on init */ | |
2129 | break; | |
2130 | ||
4cfa2c99 | 2131 | case 26: |
c1dc6153 | 2132 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ |
4cfa2c99 LP |
2133 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); |
2134 | log_notice("Setting log target to journal-or-kmsg."); | |
2135 | break; | |
2136 | ||
253ee27a LP |
2137 | case 27: |
2138 | log_set_target(LOG_TARGET_CONSOLE); | |
2139 | log_notice("Setting log target to console."); | |
2140 | break; | |
2141 | ||
2142 | case 28: | |
2143 | log_set_target(LOG_TARGET_KMSG); | |
2144 | log_notice("Setting log target to kmsg."); | |
2145 | break; | |
2146 | ||
0658666b | 2147 | default: |
4e240ab0 | 2148 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 2149 | } |
b9cd2ec1 | 2150 | } |
7d793605 | 2151 | } |
9152c765 LP |
2152 | } |
2153 | ||
2154 | if (sigchld) | |
7b77ed8c | 2155 | manager_dispatch_sigchld(m); |
034c6ed7 LP |
2156 | |
2157 | return 0; | |
2158 | } | |
2159 | ||
718db961 LP |
2160 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2161 | Manager *m = userdata; | |
2162 | Iterator i; | |
2163 | Unit *u; | |
034c6ed7 LP |
2164 | |
2165 | assert(m); | |
718db961 | 2166 | assert(m->time_change_fd == fd); |
034c6ed7 | 2167 | |
718db961 | 2168 | log_struct(LOG_INFO, |
e2cc6eca LP |
2169 | LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), |
2170 | LOG_MESSAGE("Time has been changed"), | |
718db961 | 2171 | NULL); |
034c6ed7 | 2172 | |
718db961 LP |
2173 | /* Restart the watch */ |
2174 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
03e334a1 | 2175 | m->time_change_fd = safe_close(m->time_change_fd); |
ef734fd6 | 2176 | |
718db961 | 2177 | manager_setup_time_change(m); |
4e434314 | 2178 | |
718db961 LP |
2179 | HASHMAP_FOREACH(u, m->units, i) |
2180 | if (UNIT_VTABLE(u)->time_change) | |
2181 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2182 | |
718db961 LP |
2183 | return 0; |
2184 | } | |
ea430986 | 2185 | |
718db961 LP |
2186 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2187 | Manager *m = userdata; | |
8742514c | 2188 | |
718db961 LP |
2189 | assert(m); |
2190 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2191 | |
718db961 | 2192 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2193 | |
718db961 | 2194 | manager_close_idle_pipe(m); |
03b717a3 | 2195 | |
718db961 LP |
2196 | return 0; |
2197 | } | |
31a7eb86 | 2198 | |
718db961 LP |
2199 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2200 | Manager *m = userdata; | |
fd08a840 ZJS |
2201 | int r; |
2202 | uint64_t next; | |
31a7eb86 | 2203 | |
718db961 | 2204 | assert(m); |
fd08a840 | 2205 | assert(source); |
9152c765 | 2206 | |
718db961 | 2207 | manager_print_jobs_in_progress(m); |
fd08a840 ZJS |
2208 | |
2209 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
2210 | r = sd_event_source_set_time(source, next); | |
2211 | if (r < 0) | |
2212 | return r; | |
2213 | ||
2214 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2215 | } |
2216 | ||
2217 | int manager_loop(Manager *m) { | |
2218 | int r; | |
9152c765 | 2219 | |
fac9f8df | 2220 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2221 | |
9152c765 | 2222 | assert(m); |
f755e3b7 | 2223 | m->exit_code = MANAGER_OK; |
9152c765 | 2224 | |
fe51822e | 2225 | /* Release the path cache */ |
97044145 | 2226 | m->unit_path_cache = set_free_free(m->unit_path_cache); |
fe51822e | 2227 | |
b0c918b9 LP |
2228 | manager_check_finished(m); |
2229 | ||
a4312405 | 2230 | /* There might still be some zombies hanging around from |
f3669545 | 2231 | * before we were exec()'ed. Let's reap them. */ |
e96d6be7 LP |
2232 | r = manager_dispatch_sigchld(m); |
2233 | if (r < 0) | |
a4312405 LP |
2234 | return r; |
2235 | ||
f755e3b7 | 2236 | while (m->exit_code == MANAGER_OK) { |
718db961 | 2237 | usec_t wait_usec; |
9152c765 | 2238 | |
463d0d15 | 2239 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) |
e96d6be7 LP |
2240 | watchdog_ping(); |
2241 | ||
ea430986 LP |
2242 | if (!ratelimit_test(&rl)) { |
2243 | /* Yay, something is going seriously wrong, pause a little */ | |
2244 | log_warning("Looping too fast. Throttling execution a little."); | |
2245 | sleep(1); | |
2246 | } | |
2247 | ||
37a8e683 | 2248 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2249 | continue; |
2250 | ||
c5a97ed1 LP |
2251 | if (manager_dispatch_gc_job_queue(m) > 0) |
2252 | continue; | |
2253 | ||
2254 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
2255 | continue; |
2256 | ||
cf1265e1 | 2257 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2258 | continue; |
034c6ed7 | 2259 | |
cf1265e1 | 2260 | if (manager_dispatch_cgroup_queue(m) > 0) |
c1e1601e LP |
2261 | continue; |
2262 | ||
c1e1601e | 2263 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2264 | continue; |
ea430986 | 2265 | |
c757a65b | 2266 | /* Sleep for half the watchdog time */ |
463d0d15 | 2267 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { |
718db961 LP |
2268 | wait_usec = m->runtime_watchdog / 2; |
2269 | if (wait_usec <= 0) | |
2270 | wait_usec = 1; | |
c757a65b | 2271 | } else |
3a43da28 | 2272 | wait_usec = USEC_INFINITY; |
9152c765 | 2273 | |
718db961 | 2274 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2275 | if (r < 0) |
2276 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2277 | } |
957ca890 | 2278 | |
a16e1123 | 2279 | return m->exit_code; |
83c60c9f | 2280 | } |
ea430986 | 2281 | |
718db961 | 2282 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2283 | _cleanup_free_ char *n = NULL; |
4b58153d | 2284 | sd_id128_t invocation_id; |
ea430986 | 2285 | Unit *u; |
80fbf05e | 2286 | int r; |
ea430986 LP |
2287 | |
2288 | assert(m); | |
2289 | assert(s); | |
2290 | assert(_u); | |
2291 | ||
ede3a796 LP |
2292 | r = unit_name_from_dbus_path(s, &n); |
2293 | if (r < 0) | |
2294 | return r; | |
ea430986 | 2295 | |
4b58153d LP |
2296 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
2297 | * as invocation ID. */ | |
2298 | r = sd_id128_from_string(n, &invocation_id); | |
2299 | if (r >= 0) { | |
2300 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
2301 | if (u) { | |
2302 | *_u = u; | |
2303 | return 0; | |
2304 | } | |
2305 | ||
2306 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", SD_ID128_FORMAT_VAL(invocation_id)); | |
2307 | } | |
2308 | ||
2309 | /* If this didn't work, we use the suffix as unit name. */ | |
80fbf05e | 2310 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
2311 | if (r < 0) |
2312 | return r; | |
ea430986 LP |
2313 | |
2314 | *_u = u; | |
ea430986 LP |
2315 | return 0; |
2316 | } | |
86fbf370 LP |
2317 | |
2318 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 2319 | const char *p; |
86fbf370 | 2320 | unsigned id; |
718db961 | 2321 | Job *j; |
86fbf370 LP |
2322 | int r; |
2323 | ||
2324 | assert(m); | |
2325 | assert(s); | |
2326 | assert(_j); | |
2327 | ||
718db961 LP |
2328 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
2329 | if (!p) | |
86fbf370 LP |
2330 | return -EINVAL; |
2331 | ||
718db961 | 2332 | r = safe_atou(p, &id); |
8742514c | 2333 | if (r < 0) |
86fbf370 LP |
2334 | return r; |
2335 | ||
8742514c LP |
2336 | j = manager_get_job(m, id); |
2337 | if (!j) | |
86fbf370 LP |
2338 | return -ENOENT; |
2339 | ||
2340 | *_j = j; | |
2341 | ||
2342 | return 0; | |
2343 | } | |
dfcd764e | 2344 | |
4927fcae | 2345 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2346 | |
4927fcae | 2347 | #ifdef HAVE_AUDIT |
2ba11090 | 2348 | _cleanup_free_ char *p = NULL; |
0aa281df | 2349 | const char *msg; |
7410616c | 2350 | int audit_fd, r; |
e537352b | 2351 | |
463d0d15 | 2352 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
2353 | return; |
2354 | ||
c1165f82 LP |
2355 | audit_fd = get_audit_fd(); |
2356 | if (audit_fd < 0) | |
e537352b LP |
2357 | return; |
2358 | ||
bbd3a7ba LP |
2359 | /* Don't generate audit events if the service was already |
2360 | * started and we're just deserializing */ | |
2c289ea8 | 2361 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
2362 | return; |
2363 | ||
ac155bb8 | 2364 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
2365 | return; |
2366 | ||
7410616c LP |
2367 | r = unit_name_to_prefix_and_instance(u->id, &p); |
2368 | if (r < 0) { | |
2369 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
2370 | return; |
2371 | } | |
2372 | ||
63c372cb | 2373 | msg = strjoina("unit=", p); |
0aa281df LP |
2374 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
2375 | if (errno == EPERM) | |
391ade86 | 2376 | /* We aren't allowed to send audit messages? |
44785992 | 2377 | * Then let's not retry again. */ |
c1165f82 | 2378 | close_audit_fd(); |
0aa281df | 2379 | else |
56f64d95 | 2380 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 2381 | } |
4927fcae | 2382 | #endif |
e537352b | 2383 | |
e537352b LP |
2384 | } |
2385 | ||
e983b760 | 2386 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 2387 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
2388 | _cleanup_free_ char *message = NULL; |
2389 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 2390 | int n = 0; |
e983b760 LP |
2391 | |
2392 | /* Don't generate plymouth events if the service was already | |
2393 | * started and we're just deserializing */ | |
2c289ea8 | 2394 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
2395 | return; |
2396 | ||
463d0d15 | 2397 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
2398 | return; |
2399 | ||
75f86906 | 2400 | if (detect_container() > 0) |
3772995a LP |
2401 | return; |
2402 | ||
ac155bb8 MS |
2403 | if (u->type != UNIT_SERVICE && |
2404 | u->type != UNIT_MOUNT && | |
2405 | u->type != UNIT_SWAP) | |
e983b760 LP |
2406 | return; |
2407 | ||
2408 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2409 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
2410 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
2411 | if (fd < 0) { | |
56f64d95 | 2412 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
2413 | return; |
2414 | } | |
2415 | ||
fc2fffe7 | 2416 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
e983b760 | 2417 | |
2ba11090 | 2418 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) |
56f64d95 | 2419 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 2420 | return; |
e983b760 LP |
2421 | } |
2422 | ||
ac155bb8 | 2423 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 2424 | log_oom(); |
2ba11090 | 2425 | return; |
e983b760 LP |
2426 | } |
2427 | ||
2428 | errno = 0; | |
2ba11090 ZJS |
2429 | if (write(fd, message, n + 1) != n + 1) |
2430 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
56f64d95 | 2431 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
2432 | } |
2433 | ||
d8d5ab98 | 2434 | int manager_open_serialization(Manager *m, FILE **_f) { |
8e33886e | 2435 | const char *path; |
df28bc08 | 2436 | int fd = -1; |
a16e1123 LP |
2437 | FILE *f; |
2438 | ||
2439 | assert(_f); | |
2440 | ||
463d0d15 | 2441 | path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp"; |
03532f0a | 2442 | fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC); |
d86f9d52 | 2443 | if (fd < 0) |
a16e1123 | 2444 | return -errno; |
a16e1123 | 2445 | |
a16e1123 | 2446 | log_debug("Serializing state to %s", path); |
a16e1123 | 2447 | |
01e10de3 | 2448 | f = fdopen(fd, "w+"); |
d86f9d52 | 2449 | if (!f) { |
03e334a1 | 2450 | safe_close(fd); |
a16e1123 | 2451 | return -errno; |
d86f9d52 | 2452 | } |
a16e1123 LP |
2453 | |
2454 | *_f = f; | |
2455 | ||
2456 | return 0; | |
2457 | } | |
2458 | ||
b3680f49 | 2459 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { |
a16e1123 LP |
2460 | Iterator i; |
2461 | Unit *u; | |
2462 | const char *t; | |
4a9fd066 | 2463 | char **e; |
a16e1123 LP |
2464 | int r; |
2465 | ||
2466 | assert(m); | |
2467 | assert(f); | |
2468 | assert(fds); | |
2469 | ||
313cefa1 | 2470 | m->n_reloading++; |
38c52d46 | 2471 | |
1fa2f38f | 2472 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); |
01d67b43 | 2473 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); |
33c5fae9 LP |
2474 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
2475 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 2476 | |
915b3753 | 2477 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
915b3753 | 2478 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); |
718db961 | 2479 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); |
e9ddabc2 | 2480 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 2481 | |
26a1efdf | 2482 | if (!in_initrd()) { |
915b3753 | 2483 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 | 2484 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
718db961 LP |
2485 | dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp); |
2486 | dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp); | |
2487 | dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp); | |
2488 | dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp); | |
2489 | dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp); | |
2490 | dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp); | |
f38ed060 | 2491 | } |
47a483a1 | 2492 | |
b3680f49 HH |
2493 | if (!switching_root) { |
2494 | STRV_FOREACH(e, m->environment) { | |
2495 | _cleanup_free_ char *ce; | |
4a9fd066 | 2496 | |
b3680f49 | 2497 | ce = cescape(*e); |
e3dd987c LP |
2498 | if (!ce) |
2499 | return -ENOMEM; | |
2500 | ||
2501 | fprintf(f, "env=%s\n", *e); | |
b3680f49 | 2502 | } |
4a9fd066 OS |
2503 | } |
2504 | ||
d86f9d52 LP |
2505 | if (m->notify_fd >= 0) { |
2506 | int copy; | |
2507 | ||
2508 | copy = fdset_put_dup(fds, m->notify_fd); | |
2509 | if (copy < 0) | |
2510 | return copy; | |
2511 | ||
2512 | fprintf(f, "notify-fd=%i\n", copy); | |
2513 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2514 | } | |
2515 | ||
d8fdc620 LP |
2516 | if (m->cgroups_agent_fd >= 0) { |
2517 | int copy; | |
2518 | ||
2519 | copy = fdset_put_dup(fds, m->cgroups_agent_fd); | |
2520 | if (copy < 0) | |
2521 | return copy; | |
2522 | ||
2523 | fprintf(f, "cgroups-agent-fd=%i\n", copy); | |
2524 | } | |
2525 | ||
00d9ef85 LP |
2526 | if (m->user_lookup_fds[0] >= 0) { |
2527 | int copy0, copy1; | |
2528 | ||
2529 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
2530 | if (copy0 < 0) | |
2531 | return copy0; | |
2532 | ||
2533 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
2534 | if (copy1 < 0) | |
2535 | return copy1; | |
2536 | ||
2537 | fprintf(f, "user-lookup=%i %i\n", copy0, copy1); | |
2538 | } | |
2539 | ||
05a98afd | 2540 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 2541 | |
29206d46 LP |
2542 | r = dynamic_user_serialize(m, f, fds); |
2543 | if (r < 0) | |
2544 | return r; | |
2545 | ||
00d9ef85 LP |
2546 | manager_serialize_uid_refs(m, f); |
2547 | manager_serialize_gid_refs(m, f); | |
2548 | ||
f2382a94 LP |
2549 | fputc('\n', f); |
2550 | ||
a16e1123 | 2551 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 2552 | if (u->id != t) |
a16e1123 LP |
2553 | continue; |
2554 | ||
a16e1123 | 2555 | /* Start marker */ |
ac155bb8 | 2556 | fputs(u->id, f); |
a16e1123 LP |
2557 | fputc('\n', f); |
2558 | ||
6fa48533 LP |
2559 | r = unit_serialize(u, f, fds, !switching_root); |
2560 | if (r < 0) { | |
313cefa1 | 2561 | m->n_reloading--; |
a16e1123 | 2562 | return r; |
38c52d46 | 2563 | } |
a16e1123 LP |
2564 | } |
2565 | ||
a7556052 | 2566 | assert(m->n_reloading > 0); |
313cefa1 | 2567 | m->n_reloading--; |
38c52d46 | 2568 | |
a16e1123 LP |
2569 | if (ferror(f)) |
2570 | return -EIO; | |
2571 | ||
b23de6af LP |
2572 | r = bus_fdset_add_all(m, fds); |
2573 | if (r < 0) | |
2574 | return r; | |
2575 | ||
a16e1123 LP |
2576 | return 0; |
2577 | } | |
2578 | ||
2579 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2580 | int r = 0; | |
2581 | ||
2582 | assert(m); | |
2583 | assert(f); | |
2584 | ||
2585 | log_debug("Deserializing state..."); | |
2586 | ||
313cefa1 | 2587 | m->n_reloading++; |
82c64bf5 | 2588 | |
10f8e83c | 2589 | for (;;) { |
20c03b7b | 2590 | char line[LINE_MAX], *l; |
fb4650aa | 2591 | const char *val; |
10f8e83c LP |
2592 | |
2593 | if (!fgets(line, sizeof(line), f)) { | |
2594 | if (feof(f)) | |
2595 | r = 0; | |
2596 | else | |
2597 | r = -errno; | |
2598 | ||
2599 | goto finish; | |
2600 | } | |
2601 | ||
2602 | char_array_0(line); | |
2603 | l = strstrip(line); | |
2604 | ||
2605 | if (l[0] == 0) | |
2606 | break; | |
2607 | ||
fb4650aa | 2608 | if ((val = startswith(l, "current-job-id="))) { |
01d67b43 LP |
2609 | uint32_t id; |
2610 | ||
fb4650aa ZJS |
2611 | if (safe_atou32(val, &id) < 0) |
2612 | log_debug("Failed to parse current job id value %s", val); | |
01d67b43 LP |
2613 | else |
2614 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 2615 | |
fb4650aa | 2616 | } else if ((val = startswith(l, "n-installed-jobs="))) { |
33c5fae9 LP |
2617 | uint32_t n; |
2618 | ||
fb4650aa ZJS |
2619 | if (safe_atou32(val, &n) < 0) |
2620 | log_debug("Failed to parse installed jobs counter %s", val); | |
33c5fae9 LP |
2621 | else |
2622 | m->n_installed_jobs += n; | |
718db961 | 2623 | |
fb4650aa | 2624 | } else if ((val = startswith(l, "n-failed-jobs="))) { |
33c5fae9 LP |
2625 | uint32_t n; |
2626 | ||
fb4650aa ZJS |
2627 | if (safe_atou32(val, &n) < 0) |
2628 | log_debug("Failed to parse failed jobs counter %s", val); | |
33c5fae9 LP |
2629 | else |
2630 | m->n_failed_jobs += n; | |
718db961 | 2631 | |
fb4650aa | 2632 | } else if ((val = startswith(l, "taint-usr="))) { |
01d67b43 LP |
2633 | int b; |
2634 | ||
fb4650aa | 2635 | b = parse_boolean(val); |
e3dd987c | 2636 | if (b < 0) |
fb4650aa | 2637 | log_debug("Failed to parse taint /usr flag %s", val); |
01d67b43 LP |
2638 | else |
2639 | m->taint_usr = m->taint_usr || b; | |
718db961 | 2640 | |
fb4650aa ZJS |
2641 | } else if ((val = startswith(l, "firmware-timestamp="))) |
2642 | dual_timestamp_deserialize(val, &m->firmware_timestamp); | |
2643 | else if ((val = startswith(l, "loader-timestamp="))) | |
2644 | dual_timestamp_deserialize(val, &m->loader_timestamp); | |
2645 | else if ((val = startswith(l, "kernel-timestamp="))) | |
2646 | dual_timestamp_deserialize(val, &m->kernel_timestamp); | |
2647 | else if ((val = startswith(l, "initrd-timestamp="))) | |
2648 | dual_timestamp_deserialize(val, &m->initrd_timestamp); | |
2649 | else if ((val = startswith(l, "userspace-timestamp="))) | |
2650 | dual_timestamp_deserialize(val, &m->userspace_timestamp); | |
2651 | else if ((val = startswith(l, "finish-timestamp="))) | |
2652 | dual_timestamp_deserialize(val, &m->finish_timestamp); | |
2653 | else if ((val = startswith(l, "security-start-timestamp="))) | |
2654 | dual_timestamp_deserialize(val, &m->security_start_timestamp); | |
2655 | else if ((val = startswith(l, "security-finish-timestamp="))) | |
2656 | dual_timestamp_deserialize(val, &m->security_finish_timestamp); | |
2657 | else if ((val = startswith(l, "generators-start-timestamp="))) | |
2658 | dual_timestamp_deserialize(val, &m->generators_start_timestamp); | |
2659 | else if ((val = startswith(l, "generators-finish-timestamp="))) | |
2660 | dual_timestamp_deserialize(val, &m->generators_finish_timestamp); | |
2661 | else if ((val = startswith(l, "units-load-start-timestamp="))) | |
2662 | dual_timestamp_deserialize(val, &m->units_load_start_timestamp); | |
2663 | else if ((val = startswith(l, "units-load-finish-timestamp="))) | |
2664 | dual_timestamp_deserialize(val, &m->units_load_finish_timestamp); | |
4a9fd066 OS |
2665 | else if (startswith(l, "env=")) { |
2666 | _cleanup_free_ char *uce = NULL; | |
2667 | char **e; | |
2668 | ||
527b7a42 LP |
2669 | r = cunescape(l + 4, UNESCAPE_RELAX, &uce); |
2670 | if (r < 0) | |
4a9fd066 | 2671 | goto finish; |
4a9fd066 OS |
2672 | |
2673 | e = strv_env_set(m->environment, uce); | |
2674 | if (!e) { | |
2675 | r = -ENOMEM; | |
2676 | goto finish; | |
2677 | } | |
2678 | ||
2679 | strv_free(m->environment); | |
2680 | m->environment = e; | |
e3dd987c | 2681 | |
fb4650aa | 2682 | } else if ((val = startswith(l, "notify-fd="))) { |
d86f9d52 LP |
2683 | int fd; |
2684 | ||
fb4650aa ZJS |
2685 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
2686 | log_debug("Failed to parse notify fd: %s", val); | |
d86f9d52 | 2687 | else { |
03e334a1 LP |
2688 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
2689 | safe_close(m->notify_fd); | |
d86f9d52 LP |
2690 | m->notify_fd = fdset_remove(fds, fd); |
2691 | } | |
2692 | ||
fb4650aa | 2693 | } else if ((val = startswith(l, "notify-socket="))) { |
d86f9d52 LP |
2694 | char *n; |
2695 | ||
fb4650aa | 2696 | n = strdup(val); |
d86f9d52 LP |
2697 | if (!n) { |
2698 | r = -ENOMEM; | |
2699 | goto finish; | |
2700 | } | |
2701 | ||
2702 | free(m->notify_socket); | |
2703 | m->notify_socket = n; | |
2704 | ||
fb4650aa | 2705 | } else if ((val = startswith(l, "cgroups-agent-fd="))) { |
d8fdc620 LP |
2706 | int fd; |
2707 | ||
fb4650aa ZJS |
2708 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
2709 | log_debug("Failed to parse cgroups agent fd: %s", val); | |
d8fdc620 LP |
2710 | else { |
2711 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
2712 | safe_close(m->cgroups_agent_fd); | |
2713 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
2714 | } | |
2715 | ||
fb4650aa | 2716 | } else if ((val = startswith(l, "user-lookup="))) { |
00d9ef85 LP |
2717 | int fd0, fd1; |
2718 | ||
fb4650aa ZJS |
2719 | if (sscanf(val, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) |
2720 | log_debug("Failed to parse user lookup fd: %s", val); | |
00d9ef85 LP |
2721 | else { |
2722 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
2723 | safe_close_pair(m->user_lookup_fds); | |
2724 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
2725 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
2726 | } | |
2727 | ||
fb4650aa ZJS |
2728 | } else if ((val = startswith(l, "dynamic-user="))) |
2729 | dynamic_user_deserialize_one(m, val, fds); | |
2730 | else if ((val = startswith(l, "destroy-ipc-uid="))) | |
2731 | manager_deserialize_uid_refs_one(m, val); | |
2732 | else if ((val = startswith(l, "destroy-ipc-gid="))) | |
2733 | manager_deserialize_gid_refs_one(m, val); | |
2734 | else if ((val = startswith(l, "subscribed="))) { | |
05a98afd | 2735 | |
fb4650aa | 2736 | if (strv_extend(&m->deserialized_subscribed, val) < 0) |
05a98afd LP |
2737 | log_oom(); |
2738 | ||
232f6754 | 2739 | } else if (!startswith(l, "kdbus-fd=")) /* ignore this one */ |
05a98afd | 2740 | log_debug("Unknown serialization item '%s'", l); |
10f8e83c LP |
2741 | } |
2742 | ||
a16e1123 LP |
2743 | for (;;) { |
2744 | Unit *u; | |
2745 | char name[UNIT_NAME_MAX+2]; | |
2746 | ||
2747 | /* Start marker */ | |
2748 | if (!fgets(name, sizeof(name), f)) { | |
2749 | if (feof(f)) | |
10f8e83c LP |
2750 | r = 0; |
2751 | else | |
2752 | r = -errno; | |
a16e1123 | 2753 | |
82c64bf5 | 2754 | goto finish; |
a16e1123 LP |
2755 | } |
2756 | ||
2757 | char_array_0(name); | |
2758 | ||
bd0af849 ZJS |
2759 | r = manager_load_unit(m, strstrip(name), NULL, NULL, &u); |
2760 | if (r < 0) | |
82c64bf5 | 2761 | goto finish; |
a16e1123 | 2762 | |
01e10de3 LP |
2763 | r = unit_deserialize(u, f, fds); |
2764 | if (r < 0) | |
82c64bf5 | 2765 | goto finish; |
a16e1123 LP |
2766 | } |
2767 | ||
10f8e83c | 2768 | finish: |
145b1f79 | 2769 | if (ferror(f)) |
82c64bf5 | 2770 | r = -EIO; |
a16e1123 | 2771 | |
a7556052 | 2772 | assert(m->n_reloading > 0); |
313cefa1 | 2773 | m->n_reloading--; |
82c64bf5 LP |
2774 | |
2775 | return r; | |
a16e1123 LP |
2776 | } |
2777 | ||
2778 | int manager_reload(Manager *m) { | |
2779 | int r, q; | |
51d122af ZJS |
2780 | _cleanup_fclose_ FILE *f = NULL; |
2781 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
a16e1123 LP |
2782 | |
2783 | assert(m); | |
2784 | ||
07719a21 LP |
2785 | r = manager_open_serialization(m, &f); |
2786 | if (r < 0) | |
a16e1123 LP |
2787 | return r; |
2788 | ||
313cefa1 | 2789 | m->n_reloading++; |
718db961 | 2790 | bus_manager_send_reloading(m, true); |
38c52d46 | 2791 | |
07719a21 LP |
2792 | fds = fdset_new(); |
2793 | if (!fds) { | |
313cefa1 | 2794 | m->n_reloading--; |
51d122af | 2795 | return -ENOMEM; |
a16e1123 LP |
2796 | } |
2797 | ||
b3680f49 | 2798 | r = manager_serialize(m, f, fds, false); |
07719a21 | 2799 | if (r < 0) { |
313cefa1 | 2800 | m->n_reloading--; |
51d122af | 2801 | return r; |
38c52d46 | 2802 | } |
a16e1123 LP |
2803 | |
2804 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
313cefa1 | 2805 | m->n_reloading--; |
51d122af | 2806 | return -errno; |
a16e1123 LP |
2807 | } |
2808 | ||
2809 | /* From here on there is no way back. */ | |
2810 | manager_clear_jobs_and_units(m); | |
07a78643 | 2811 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 2812 | lookup_paths_free(&m->lookup_paths); |
29206d46 | 2813 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
2814 | m->uid_refs = hashmap_free(m->uid_refs); |
2815 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 2816 | |
4943d143 | 2817 | q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
2818 | if (q < 0 && r >= 0) |
2819 | r = q; | |
5a1e9937 | 2820 | |
a3c4eb07 LP |
2821 | /* Find new unit paths */ |
2822 | q = manager_run_generators(m); | |
e801700e | 2823 | if (q < 0 && r >= 0) |
07719a21 LP |
2824 | r = q; |
2825 | ||
a1453343 | 2826 | lookup_paths_reduce(&m->lookup_paths); |
5a1e9937 LP |
2827 | manager_build_unit_path_cache(m); |
2828 | ||
a16e1123 | 2829 | /* First, enumerate what we can from all config files */ |
ba64af90 | 2830 | manager_enumerate(m); |
a16e1123 LP |
2831 | |
2832 | /* Second, deserialize our stored data */ | |
07719a21 | 2833 | q = manager_deserialize(m, f, fds); |
e801700e | 2834 | if (q < 0 && r >= 0) |
a16e1123 LP |
2835 | r = q; |
2836 | ||
2837 | fclose(f); | |
2838 | f = NULL; | |
2839 | ||
a2cc4a6c ZJS |
2840 | /* Re-register notify_fd as event source */ |
2841 | q = manager_setup_notify(m); | |
e801700e | 2842 | if (q < 0 && r >= 0) |
a2cc4a6c ZJS |
2843 | r = q; |
2844 | ||
d8fdc620 LP |
2845 | q = manager_setup_cgroups_agent(m); |
2846 | if (q < 0 && r >= 0) | |
2847 | r = q; | |
2848 | ||
00d9ef85 LP |
2849 | q = manager_setup_user_lookup_fd(m); |
2850 | if (q < 0 && r >= 0) | |
2851 | r = q; | |
2852 | ||
a16e1123 | 2853 | /* Third, fire things up! */ |
007c6337 | 2854 | manager_coldplug(m); |
a16e1123 | 2855 | |
29206d46 LP |
2856 | /* Release any dynamic users no longer referenced */ |
2857 | dynamic_user_vacuum(m, true); | |
2858 | ||
00d9ef85 LP |
2859 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
2860 | manager_vacuum_uid_refs(m); | |
2861 | manager_vacuum_gid_refs(m); | |
2862 | ||
8936a5e3 DM |
2863 | /* Sync current state of bus names with our set of listening units */ |
2864 | if (m->api_bus) | |
2865 | manager_sync_bus_names(m, m->api_bus); | |
2866 | ||
a7556052 LP |
2867 | assert(m->n_reloading > 0); |
2868 | m->n_reloading--; | |
9f611ad8 | 2869 | |
71445ae7 LP |
2870 | m->send_reloading_done = true; |
2871 | ||
a16e1123 LP |
2872 | return r; |
2873 | } | |
2874 | ||
fdf20a31 | 2875 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2876 | Unit *u; |
2877 | Iterator i; | |
2878 | ||
2879 | assert(m); | |
2880 | ||
2881 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2882 | unit_reset_failed(u); |
5632e374 LP |
2883 | } |
2884 | ||
31afa0a4 | 2885 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
2886 | Unit *u; |
2887 | ||
2888 | assert(m); | |
2889 | assert(name); | |
2890 | ||
2891 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
2892 | u = manager_get_unit(m, name); |
2893 | if (!u) | |
8f6df3fa LP |
2894 | return true; |
2895 | ||
31afa0a4 | 2896 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
2897 | } |
2898 | ||
56dacdbc | 2899 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 2900 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 2901 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 2902 | |
56dacdbc | 2903 | if (m->test_run) |
b0c918b9 LP |
2904 | return; |
2905 | ||
463d0d15 | 2906 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
e03ae661 | 2907 | |
915b3753 LP |
2908 | /* Note that m->kernel_usec.monotonic is always at 0, |
2909 | * and m->firmware_usec.monotonic and | |
2910 | * m->loader_usec.monotonic should be considered | |
2911 | * negative values. */ | |
2912 | ||
7ceba241 LP |
2913 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
2914 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 2915 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 2916 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 2917 | |
e9ddabc2 | 2918 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 2919 | |
915b3753 LP |
2920 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
2921 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 2922 | |
e12919e8 | 2923 | log_struct(LOG_INFO, |
e2cc6eca | 2924 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 LP |
2925 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
2926 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
2927 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
e2cc6eca LP |
2928 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
2929 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2930 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
2931 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2932 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 2933 | NULL); |
18fa6b27 | 2934 | } else { |
915b3753 | 2935 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
2936 | initrd_usec = 0; |
2937 | ||
81270860 | 2938 | log_struct(LOG_INFO, |
e2cc6eca | 2939 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 | 2940 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 2941 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
2942 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.", |
2943 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2944 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2945 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
81270860 | 2946 | NULL); |
e12919e8 LP |
2947 | } |
2948 | } else { | |
2949 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; | |
2950 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
2951 | ||
2952 | log_struct(LOG_INFO, | |
5a1d6cb1 | 2953 | LOG_MESSAGE_ID(SD_MESSAGE_USER_STARTUP_FINISHED), |
e12919e8 | 2954 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
2955 | LOG_MESSAGE("Startup finished in %s.", |
2956 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 2957 | NULL); |
18fa6b27 | 2958 | } |
b0c918b9 | 2959 | |
718db961 | 2960 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2961 | |
2962 | sd_notifyf(false, | |
af4ec430 LP |
2963 | "READY=1\n" |
2964 | "STATUS=Startup finished in %s.", | |
2fa4092c | 2965 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
b0c918b9 LP |
2966 | } |
2967 | ||
56dacdbc | 2968 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
2969 | assert(m); |
2970 | ||
2c289ea8 | 2971 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
2972 | return; |
2973 | ||
9771b62d LP |
2974 | /* Verify that we are actually running currently. Initially |
2975 | * the exit code is set to invalid, and during operation it is | |
2976 | * then set to MANAGER_OK */ | |
2977 | if (m->exit_code != MANAGER_OK) | |
2978 | return; | |
2979 | ||
56dacdbc | 2980 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 2981 | if (m->jobs_in_progress_event_source) |
2ae56591 | 2982 | /* Ignore any failure, this is only for feedback */ |
e7ab4d1a | 2983 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); |
56dacdbc ZJS |
2984 | |
2985 | return; | |
2986 | } | |
2987 | ||
2988 | manager_flip_auto_status(m, false); | |
2989 | ||
2990 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
2991 | manager_close_idle_pipe(m); |
2992 | ||
2993 | /* Turn off confirm spawn now */ | |
7d5ceb64 | 2994 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
2995 | |
2996 | /* No need to update ask password status when we're going non-interactive */ | |
2997 | manager_close_ask_password(m); | |
2998 | ||
2999 | /* This is no longer the first boot */ | |
3000 | manager_set_first_boot(m, false); | |
3001 | ||
3002 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
3003 | return; | |
3004 | ||
3005 | dual_timestamp_get(&m->finish_timestamp); | |
3006 | ||
3007 | manager_notify_finished(m); | |
3008 | ||
e7ab4d1a | 3009 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3010 | } |
3011 | ||
e801700e | 3012 | static int manager_run_generators(Manager *m) { |
f42348ac | 3013 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 3014 | const char *argv[5]; |
e801700e | 3015 | char **path; |
07719a21 | 3016 | int r; |
5a1e9937 LP |
3017 | |
3018 | assert(m); | |
3019 | ||
0d8c31ff | 3020 | if (m->test_run) |
e801700e | 3021 | return 0; |
0d8c31ff | 3022 | |
9183df70 | 3023 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3024 | if (!paths) |
3025 | return log_oom(); | |
5a1e9937 | 3026 | |
49681057 ZJS |
3027 | /* Optimize by skipping the whole process by not creating output directories |
3028 | * if no generators are found. */ | |
e801700e | 3029 | STRV_FOREACH(path, paths) { |
a3c4eb07 | 3030 | if (access(*path, F_OK) >= 0) |
e801700e | 3031 | goto found; |
49681057 | 3032 | if (errno != ENOENT) |
e801700e | 3033 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); |
5a1e9937 | 3034 | } |
a3c4eb07 | 3035 | |
e801700e | 3036 | return 0; |
5a1e9937 | 3037 | |
e801700e | 3038 | found: |
cd64fd56 | 3039 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
07719a21 LP |
3040 | if (r < 0) |
3041 | goto finish; | |
5a1e9937 | 3042 | |
83cc030f | 3043 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3044 | argv[1] = m->lookup_paths.generator; |
3045 | argv[2] = m->lookup_paths.generator_early; | |
3046 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3047 | argv[4] = NULL; |
5a1e9937 | 3048 | |
718db961 | 3049 | RUN_WITH_UMASK(0022) |
e801700e | 3050 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv); |
5a1e9937 | 3051 | |
718db961 | 3052 | finish: |
cd64fd56 | 3053 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3054 | return r; |
5a1e9937 LP |
3055 | } |
3056 | ||
718db961 LP |
3057 | int manager_environment_add(Manager *m, char **minus, char **plus) { |
3058 | char **a = NULL, **b = NULL, **l; | |
97d0e5f8 | 3059 | assert(m); |
bcd8e6d1 | 3060 | |
718db961 | 3061 | l = m->environment; |
bcd8e6d1 | 3062 | |
718db961 LP |
3063 | if (!strv_isempty(minus)) { |
3064 | a = strv_env_delete(l, 1, minus); | |
3065 | if (!a) | |
3066 | return -ENOMEM; | |
3067 | ||
3068 | l = a; | |
3069 | } | |
3070 | ||
3071 | if (!strv_isempty(plus)) { | |
3072 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
3073 | if (!b) { |
3074 | strv_free(a); | |
718db961 | 3075 | return -ENOMEM; |
aa9f8a30 | 3076 | } |
bcd8e6d1 | 3077 | |
718db961 LP |
3078 | l = b; |
3079 | } | |
3080 | ||
3081 | if (m->environment != l) | |
3082 | strv_free(m->environment); | |
3083 | if (a != l) | |
3084 | strv_free(a); | |
3085 | if (b != l) | |
3086 | strv_free(b); | |
3087 | ||
f069efb4 LP |
3088 | m->environment = l; |
3089 | manager_clean_environment(m); | |
3090 | strv_sort(m->environment); | |
3091 | ||
97d0e5f8 UTL |
3092 | return 0; |
3093 | } | |
3094 | ||
c93ff2e9 FC |
3095 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
3096 | int i; | |
3097 | ||
3098 | assert(m); | |
3099 | ||
517d56b1 | 3100 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3101 | m->rlimit[i] = mfree(m->rlimit[i]); |
3102 | ||
07719a21 LP |
3103 | if (!default_rlimit[i]) |
3104 | continue; | |
c93ff2e9 | 3105 | |
07719a21 LP |
3106 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3107 | if (!m->rlimit[i]) | |
3ce40911 | 3108 | return log_oom(); |
c93ff2e9 FC |
3109 | } |
3110 | ||
3111 | return 0; | |
3112 | } | |
3113 | ||
4cfa2c99 | 3114 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
3115 | Unit *u; |
3116 | ||
3117 | assert(m); | |
3118 | ||
463d0d15 | 3119 | if (!MANAGER_IS_SYSTEM(m)) |
f1dd0c3f LP |
3120 | return; |
3121 | ||
731a676c LP |
3122 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
3123 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 3124 | log_close_journal(); |
731a676c | 3125 | return; |
f1dd0c3f LP |
3126 | } |
3127 | ||
731a676c LP |
3128 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
3129 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 3130 | log_close_journal(); |
731a676c LP |
3131 | return; |
3132 | } | |
f1dd0c3f | 3133 | |
731a676c LP |
3134 | /* Hmm, OK, so the socket is fully up and the service is up |
3135 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
3136 | log_open(); |
3137 | } | |
3138 | ||
d450b6f2 | 3139 | void manager_set_show_status(Manager *m, ShowStatus mode) { |
27d340c7 | 3140 | assert(m); |
d450b6f2 | 3141 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); |
27d340c7 | 3142 | |
463d0d15 | 3143 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3144 | return; |
3145 | ||
76b6f3f6 ZJS |
3146 | if (m->show_status != mode) |
3147 | log_debug("%s showing of status.", | |
3148 | mode == SHOW_STATUS_NO ? "Disabling" : "Enabling"); | |
d450b6f2 | 3149 | m->show_status = mode; |
27d340c7 | 3150 | |
d450b6f2 | 3151 | if (mode > 0) |
ac5b0c13 | 3152 | (void) touch("/run/systemd/show-status"); |
27d340c7 | 3153 | else |
ac5b0c13 | 3154 | (void) unlink("/run/systemd/show-status"); |
27d340c7 LP |
3155 | } |
3156 | ||
127d5fd1 | 3157 | static bool manager_get_show_status(Manager *m, StatusType type) { |
27d340c7 LP |
3158 | assert(m); |
3159 | ||
463d0d15 | 3160 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3161 | return false; |
3162 | ||
31a7eb86 ZJS |
3163 | if (m->no_console_output) |
3164 | return false; | |
3165 | ||
d81afec1 | 3166 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) |
08510627 LP |
3167 | return false; |
3168 | ||
e46b13c8 | 3169 | /* If we cannot find out the status properly, just proceed. */ |
ebc5788e | 3170 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) |
e46b13c8 ZJS |
3171 | return false; |
3172 | ||
d450b6f2 | 3173 | if (m->show_status > 0) |
27d340c7 LP |
3174 | return true; |
3175 | ||
031886ed | 3176 | return false; |
27d340c7 | 3177 | } |
68b29a9f | 3178 | |
7d5ceb64 FB |
3179 | const char *manager_get_confirm_spawn(Manager *m) { |
3180 | static int last_errno = 0; | |
3181 | const char *vc = m->confirm_spawn; | |
3182 | struct stat st; | |
3183 | int r; | |
3184 | ||
3185 | /* Here's the deal: we want to test the validity of the console but don't want | |
3186 | * PID1 to go through the whole console process which might block. But we also | |
3187 | * want to warn the user only once if something is wrong with the console so we | |
3188 | * cannot do the sanity checks after spawning our children. So here we simply do | |
3189 | * really basic tests to hopefully trap common errors. | |
3190 | * | |
3191 | * If the console suddenly disappear at the time our children will really it | |
3192 | * then they will simply fail to acquire it and a positive answer will be | |
3193 | * assumed. New children will fallback to /dev/console though. | |
3194 | * | |
3195 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
3196 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
3197 | * reason the configured console is not ready, we fallback to the default | |
3198 | * console. */ | |
3199 | ||
3200 | if (!vc || path_equal(vc, "/dev/console")) | |
3201 | return vc; | |
3202 | ||
3203 | r = stat(vc, &st); | |
3204 | if (r < 0) | |
3205 | goto fail; | |
3206 | ||
3207 | if (!S_ISCHR(st.st_mode)) { | |
3208 | errno = ENOTTY; | |
3209 | goto fail; | |
3210 | } | |
3211 | ||
3212 | last_errno = 0; | |
3213 | return vc; | |
3214 | fail: | |
3215 | if (last_errno != errno) { | |
3216 | last_errno = errno; | |
3217 | log_warning_errno(errno, "Failed to open %s: %m, using default console", vc); | |
3218 | } | |
3219 | return "/dev/console"; | |
3220 | } | |
3221 | ||
e2680723 LP |
3222 | void manager_set_first_boot(Manager *m, bool b) { |
3223 | assert(m); | |
3224 | ||
463d0d15 | 3225 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3226 | return; |
3227 | ||
ae2a2c53 LP |
3228 | if (m->first_boot != (int) b) { |
3229 | if (b) | |
3230 | (void) touch("/run/systemd/first-boot"); | |
3231 | else | |
3232 | (void) unlink("/run/systemd/first-boot"); | |
3233 | } | |
e2680723 | 3234 | |
ae2a2c53 | 3235 | m->first_boot = b; |
e2680723 LP |
3236 | } |
3237 | ||
b0eb2944 FB |
3238 | void manager_disable_confirm_spawn(void) { |
3239 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
3240 | } | |
3241 | ||
3242 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
3243 | if (!m->confirm_spawn) | |
3244 | return true; | |
3245 | ||
3246 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
3247 | } | |
3248 | ||
127d5fd1 | 3249 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
3250 | va_list ap; |
3251 | ||
cb6531be ZJS |
3252 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
3253 | ||
3254 | if (m && !manager_get_show_status(m, type)) | |
25cee550 MS |
3255 | return; |
3256 | ||
03b717a3 MS |
3257 | /* XXX We should totally drop the check for ephemeral here |
3258 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 3259 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
3260 | return; |
3261 | ||
25cee550 | 3262 | va_start(ap, format); |
127d5fd1 | 3263 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); |
25cee550 MS |
3264 | va_end(ap); |
3265 | } | |
3266 | ||
a57f7e2c LP |
3267 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
3268 | char p[strlen(path)+1]; | |
3269 | ||
3270 | assert(m); | |
3271 | assert(path); | |
3272 | ||
3273 | strcpy(p, path); | |
3274 | path_kill_slashes(p); | |
3275 | ||
3276 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3277 | } | |
e66cf1a3 LP |
3278 | |
3279 | const char *manager_get_runtime_prefix(Manager *m) { | |
f755e3b7 | 3280 | assert(m); |
e66cf1a3 | 3281 | |
463d0d15 | 3282 | return MANAGER_IS_SYSTEM(m) ? |
e66cf1a3 LP |
3283 | "/run" : |
3284 | getenv("XDG_RUNTIME_DIR"); | |
3285 | } | |
f755e3b7 | 3286 | |
5269eb6b | 3287 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 3288 | unsigned size; |
5269eb6b | 3289 | int r; |
03455c28 LDM |
3290 | |
3291 | assert(m); | |
3292 | assert(u->manager == m); | |
3293 | ||
3294 | size = set_size(m->failed_units); | |
3295 | ||
9fff8981 | 3296 | if (failed) { |
5269eb6b LP |
3297 | r = set_ensure_allocated(&m->failed_units, NULL); |
3298 | if (r < 0) | |
3299 | return log_oom(); | |
3300 | ||
9fff8981 | 3301 | if (set_put(m->failed_units, u) < 0) |
5269eb6b | 3302 | return log_oom(); |
9fff8981 | 3303 | } else |
5269eb6b | 3304 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
3305 | |
3306 | if (set_size(m->failed_units) != size) | |
3307 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
3308 | |
3309 | return 0; | |
03455c28 LDM |
3310 | } |
3311 | ||
f755e3b7 LP |
3312 | ManagerState manager_state(Manager *m) { |
3313 | Unit *u; | |
3314 | ||
3315 | assert(m); | |
3316 | ||
3317 | /* Did we ever finish booting? If not then we are still starting up */ | |
d81afec1 LP |
3318 | if (!dual_timestamp_is_set(&m->finish_timestamp)) { |
3319 | ||
3320 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3321 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3322 | return MANAGER_INITIALIZING; | |
3323 | ||
f755e3b7 | 3324 | return MANAGER_STARTING; |
d81afec1 | 3325 | } |
f755e3b7 LP |
3326 | |
3327 | /* Is the special shutdown target queued? If so, we are in shutdown state */ | |
3328 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
f0469b8c | 3329 | if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)) |
f755e3b7 LP |
3330 | return MANAGER_STOPPING; |
3331 | ||
3332 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3333 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3334 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3335 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3336 | return MANAGER_MAINTENANCE; |
3337 | ||
3338 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); | |
3339 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3340 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3341 | return MANAGER_MAINTENANCE; |
3342 | ||
3343 | /* Are there any failed units? If so, we are in degraded mode */ | |
3344 | if (set_size(m->failed_units) > 0) | |
3345 | return MANAGER_DEGRADED; | |
3346 | ||
3347 | return MANAGER_RUNNING; | |
3348 | } | |
3349 | ||
00d9ef85 LP |
3350 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3351 | ||
3352 | static void manager_unref_uid_internal( | |
3353 | Manager *m, | |
3354 | Hashmap **uid_refs, | |
3355 | uid_t uid, | |
3356 | bool destroy_now, | |
3357 | int (*_clean_ipc)(uid_t uid)) { | |
3358 | ||
3359 | uint32_t c, n; | |
3360 | ||
3361 | assert(m); | |
3362 | assert(uid_refs); | |
3363 | assert(uid_is_valid(uid)); | |
3364 | assert(_clean_ipc); | |
3365 | ||
3366 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
3367 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
3368 | * | |
3369 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
3370 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
3371 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
3372 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
3373 | ||
3374 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3375 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3376 | ||
3377 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3378 | return; | |
3379 | ||
3380 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3381 | ||
3382 | n = c & ~DESTROY_IPC_FLAG; | |
3383 | assert(n > 0); | |
3384 | n--; | |
3385 | ||
3386 | if (destroy_now && n == 0) { | |
3387 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
3388 | ||
3389 | if (c & DESTROY_IPC_FLAG) { | |
3390 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
3391 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3392 | uid); | |
3393 | (void) _clean_ipc(uid); | |
3394 | } | |
3395 | } else { | |
3396 | c = n | (c & DESTROY_IPC_FLAG); | |
3397 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
3398 | } | |
3399 | } | |
3400 | ||
3401 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
3402 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
3403 | } | |
3404 | ||
3405 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
3406 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
3407 | } | |
3408 | ||
3409 | static int manager_ref_uid_internal( | |
3410 | Manager *m, | |
3411 | Hashmap **uid_refs, | |
3412 | uid_t uid, | |
3413 | bool clean_ipc) { | |
3414 | ||
3415 | uint32_t c, n; | |
3416 | int r; | |
3417 | ||
3418 | assert(m); | |
3419 | assert(uid_refs); | |
3420 | assert(uid_is_valid(uid)); | |
3421 | ||
3422 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
3423 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
3424 | ||
3425 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3426 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3427 | ||
3428 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3429 | return 0; | |
3430 | ||
3431 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3432 | if (r < 0) | |
3433 | return r; | |
3434 | ||
3435 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3436 | ||
3437 | n = c & ~DESTROY_IPC_FLAG; | |
3438 | n++; | |
3439 | ||
3440 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
3441 | return -EOVERFLOW; | |
3442 | ||
3443 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
3444 | ||
3445 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3446 | } | |
3447 | ||
3448 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
3449 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
3450 | } | |
3451 | ||
3452 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
3453 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
3454 | } | |
3455 | ||
3456 | static void manager_vacuum_uid_refs_internal( | |
3457 | Manager *m, | |
3458 | Hashmap **uid_refs, | |
3459 | int (*_clean_ipc)(uid_t uid)) { | |
3460 | ||
3461 | Iterator i; | |
3462 | void *p, *k; | |
3463 | ||
3464 | assert(m); | |
3465 | assert(uid_refs); | |
3466 | assert(_clean_ipc); | |
3467 | ||
3468 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3469 | uint32_t c, n; | |
3470 | uid_t uid; | |
3471 | ||
3472 | uid = PTR_TO_UID(k); | |
3473 | c = PTR_TO_UINT32(p); | |
3474 | ||
3475 | n = c & ~DESTROY_IPC_FLAG; | |
3476 | if (n > 0) | |
3477 | continue; | |
3478 | ||
3479 | if (c & DESTROY_IPC_FLAG) { | |
3480 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
3481 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3482 | uid); | |
3483 | (void) _clean_ipc(uid); | |
3484 | } | |
3485 | ||
3486 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
3487 | } | |
3488 | } | |
3489 | ||
3490 | void manager_vacuum_uid_refs(Manager *m) { | |
3491 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); | |
3492 | } | |
3493 | ||
3494 | void manager_vacuum_gid_refs(Manager *m) { | |
3495 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); | |
3496 | } | |
3497 | ||
3498 | static void manager_serialize_uid_refs_internal( | |
3499 | Manager *m, | |
3500 | FILE *f, | |
3501 | Hashmap **uid_refs, | |
3502 | const char *field_name) { | |
3503 | ||
3504 | Iterator i; | |
3505 | void *p, *k; | |
3506 | ||
3507 | assert(m); | |
3508 | assert(f); | |
3509 | assert(uid_refs); | |
3510 | assert(field_name); | |
3511 | ||
3512 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter | |
3513 | * of it is better rebuild after a reload/reexec. */ | |
3514 | ||
3515 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3516 | uint32_t c; | |
3517 | uid_t uid; | |
3518 | ||
3519 | uid = PTR_TO_UID(k); | |
3520 | c = PTR_TO_UINT32(p); | |
3521 | ||
3522 | if (!(c & DESTROY_IPC_FLAG)) | |
3523 | continue; | |
3524 | ||
3525 | fprintf(f, "%s=" UID_FMT "\n", field_name, uid); | |
3526 | } | |
3527 | } | |
3528 | ||
3529 | void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3530 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3531 | } | |
3532 | ||
3533 | void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3534 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3535 | } | |
3536 | ||
3537 | static void manager_deserialize_uid_refs_one_internal( | |
3538 | Manager *m, | |
3539 | Hashmap** uid_refs, | |
3540 | const char *value) { | |
3541 | ||
3542 | uid_t uid; | |
3543 | uint32_t c; | |
3544 | int r; | |
3545 | ||
3546 | assert(m); | |
3547 | assert(uid_refs); | |
3548 | assert(value); | |
3549 | ||
3550 | r = parse_uid(value, &uid); | |
3551 | if (r < 0 || uid == 0) { | |
3552 | log_debug("Unable to parse UID reference serialization"); | |
3553 | return; | |
3554 | } | |
3555 | ||
3556 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3557 | if (r < 0) { | |
3558 | log_oom(); | |
3559 | return; | |
3560 | } | |
3561 | ||
3562 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3563 | if (c & DESTROY_IPC_FLAG) | |
3564 | return; | |
3565 | ||
3566 | c |= DESTROY_IPC_FLAG; | |
3567 | ||
3568 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3569 | if (r < 0) { | |
3570 | log_debug("Failed to add UID reference entry"); | |
3571 | return; | |
3572 | } | |
3573 | } | |
3574 | ||
3575 | void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3576 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3577 | } | |
3578 | ||
3579 | void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3580 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3581 | } | |
3582 | ||
3583 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
3584 | struct buffer { | |
3585 | uid_t uid; | |
3586 | gid_t gid; | |
3587 | char unit_name[UNIT_NAME_MAX+1]; | |
3588 | } _packed_ buffer; | |
3589 | ||
3590 | Manager *m = userdata; | |
3591 | ssize_t l; | |
3592 | size_t n; | |
3593 | Unit *u; | |
3594 | ||
3595 | assert_se(source); | |
3596 | assert_se(m); | |
3597 | ||
3598 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
3599 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
3600 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
3601 | ||
3602 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
3603 | if (l < 0) { | |
3604 | if (errno == EINTR || errno == EAGAIN) | |
3605 | return 0; | |
3606 | ||
3607 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
3608 | } | |
3609 | ||
3610 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
3611 | log_warning("Received too short user lookup message, ignoring."); | |
3612 | return 0; | |
3613 | } | |
3614 | ||
3615 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
3616 | log_warning("Received too long user lookup message, ignoring."); | |
3617 | return 0; | |
3618 | } | |
3619 | ||
3620 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
3621 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
3622 | return 0; | |
3623 | } | |
3624 | ||
3625 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
3626 | if (memchr(buffer.unit_name, 0, n)) { | |
3627 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
3628 | return 0; | |
3629 | } | |
3630 | ||
3631 | buffer.unit_name[n] = 0; | |
3632 | u = manager_get_unit(m, buffer.unit_name); | |
3633 | if (!u) { | |
3634 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
3635 | return 0; | |
3636 | } | |
3637 | ||
3638 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
3639 | ||
3640 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
3641 | return 0; | |
3642 | } | |
3643 | ||
f755e3b7 | 3644 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 3645 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
3646 | [MANAGER_STARTING] = "starting", |
3647 | [MANAGER_RUNNING] = "running", | |
3648 | [MANAGER_DEGRADED] = "degraded", | |
3649 | [MANAGER_MAINTENANCE] = "maintenance", | |
3650 | [MANAGER_STOPPING] = "stopping", | |
3651 | }; | |
3652 | ||
3653 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); |