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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 | ||
400f1a33 | 20 | #include <dirent.h> |
60918275 | 21 | #include <errno.h> |
400f1a33 LP |
22 | #include <fcntl.h> |
23 | #include <linux/kd.h> | |
9152c765 | 24 | #include <signal.h> |
400f1a33 | 25 | #include <string.h> |
e46b13c8 | 26 | #include <sys/epoll.h> |
400f1a33 | 27 | #include <sys/inotify.h> |
e1414003 | 28 | #include <sys/ioctl.h> |
400f1a33 | 29 | #include <sys/reboot.h> |
8742514c | 30 | #include <sys/timerfd.h> |
400f1a33 LP |
31 | #include <sys/wait.h> |
32 | #include <unistd.h> | |
830f6caa LP |
33 | |
34 | #ifdef HAVE_AUDIT | |
4927fcae | 35 | #include <libaudit.h> |
830f6caa | 36 | #endif |
60918275 | 37 | |
718db961 | 38 | #include "sd-daemon.h" |
718db961 | 39 | #include "sd-messages.h" |
81527be1 | 40 | |
b5efdb8a | 41 | #include "alloc-util.h" |
400f1a33 LP |
42 | #include "audit-fd.h" |
43 | #include "boot-timestamps.h" | |
44 | #include "bus-common-errors.h" | |
45 | #include "bus-error.h" | |
46 | #include "bus-kernel.h" | |
47 | #include "bus-util.h" | |
00d9ef85 | 48 | #include "clean-ipc.h" |
400f1a33 LP |
49 | #include "dbus-job.h" |
50 | #include "dbus-manager.h" | |
51 | #include "dbus-unit.h" | |
52 | #include "dbus.h" | |
d063a527 | 53 | #include "dirent-util.h" |
400f1a33 | 54 | #include "env-util.h" |
4f5dd394 | 55 | #include "escape.h" |
400f1a33 | 56 | #include "exit-status.h" |
3ffd4af2 | 57 | #include "fd-util.h" |
0d39fa9c | 58 | #include "fileio.h" |
f4f15635 | 59 | #include "fs-util.h" |
60918275 | 60 | #include "hashmap.h" |
c004493c | 61 | #include "io-util.h" |
400f1a33 | 62 | #include "locale-setup.h" |
16354eff | 63 | #include "log.h" |
400f1a33 | 64 | #include "macro.h" |
3ffd4af2 | 65 | #include "manager.h" |
400f1a33 | 66 | #include "missing.h" |
49e942b2 | 67 | #include "mkdir.h" |
6bedfcbb | 68 | #include "parse-util.h" |
400f1a33 LP |
69 | #include "path-lookup.h" |
70 | #include "path-util.h" | |
71 | #include "process-util.h" | |
ea430986 | 72 | #include "ratelimit.h" |
c6878637 | 73 | #include "rm-rf.h" |
400f1a33 | 74 | #include "signal-util.h" |
514f4ef5 | 75 | #include "special.h" |
8fcde012 | 76 | #include "stat-util.h" |
8b43440b | 77 | #include "string-table.h" |
07630cea | 78 | #include "string-util.h" |
400f1a33 LP |
79 | #include "strv.h" |
80 | #include "terminal-util.h" | |
81 | #include "time-util.h" | |
82 | #include "transaction.h" | |
affb60b1 | 83 | #include "umask-util.h" |
400f1a33 | 84 | #include "unit-name.h" |
00d9ef85 | 85 | #include "user-util.h" |
400f1a33 | 86 | #include "util.h" |
5dc4c17f | 87 | #include "virt.h" |
e96d6be7 | 88 | #include "watchdog.h" |
60918275 | 89 | |
a47806fa | 90 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 91 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 92 | |
03b717a3 | 93 | /* Initial delay and the interval for printing status messages about running jobs */ |
fd08a840 ZJS |
94 | #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) |
95 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) | |
03b717a3 MS |
96 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
97 | ||
718db961 | 98 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 99 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
100 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
101 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
102 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 103 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 104 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 105 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
e801700e | 106 | static int manager_run_generators(Manager *m); |
718db961 | 107 | |
2ae56591 | 108 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 109 | usec_t next; |
cfa9677b | 110 | int r; |
e5723c89 | 111 | |
718db961 | 112 | assert(m); |
03b717a3 | 113 | |
718db961 | 114 | if (m->jobs_in_progress_event_source) |
2ae56591 | 115 | return; |
03b717a3 | 116 | |
e5723c89 | 117 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; |
cfa9677b | 118 | r = sd_event_add_time( |
6a0f1f6d LP |
119 | m->event, |
120 | &m->jobs_in_progress_event_source, | |
121 | CLOCK_MONOTONIC, | |
122 | next, 0, | |
123 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
124 | if (r < 0) |
125 | return; | |
7dfbe2e3 TG |
126 | |
127 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
128 | } |
129 | ||
1fc464f6 | 130 | #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1)) |
03b717a3 | 131 | |
03b717a3 MS |
132 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
133 | char *p = buffer; | |
134 | ||
135 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
136 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
137 | ||
138 | if (pos > 1) { | |
6282c859 MS |
139 | if (pos > 2) |
140 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
141 | if (log_get_show_color()) |
142 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
143 | *p++ = '*'; |
144 | } | |
145 | ||
146 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
147 | if (log_get_show_color()) |
148 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
149 | *p++ = '*'; |
150 | } | |
151 | ||
64c3610b FB |
152 | if (log_get_show_color()) |
153 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
154 | |
155 | if (pos < width) { | |
64c3610b FB |
156 | if (log_get_show_color()) |
157 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 158 | *p++ = '*'; |
6282c859 MS |
159 | if (pos < width-1) |
160 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
161 | if (log_get_show_color()) |
162 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 163 | } |
03b717a3 MS |
164 | } |
165 | ||
cb8ccb22 | 166 | void manager_flip_auto_status(Manager *m, bool enable) { |
f755e3b7 LP |
167 | assert(m); |
168 | ||
cb8ccb22 ZJS |
169 | if (enable) { |
170 | if (m->show_status == SHOW_STATUS_AUTO) | |
171 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY); | |
172 | } else { | |
173 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
174 | manager_set_show_status(m, SHOW_STATUS_AUTO); | |
175 | } | |
176 | } | |
177 | ||
03b717a3 | 178 | static void manager_print_jobs_in_progress(Manager *m) { |
718db961 | 179 | _cleanup_free_ char *job_of_n = NULL; |
03b717a3 MS |
180 | Iterator i; |
181 | Job *j; | |
03b717a3 MS |
182 | unsigned counter = 0, print_nr; |
183 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
184 | unsigned cylon_pos; | |
8bb310c3 ZJS |
185 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
186 | uint64_t x; | |
03b717a3 | 187 | |
718db961 | 188 | assert(m); |
9c3349e2 | 189 | assert(m->n_running_jobs > 0); |
718db961 | 190 | |
cb8ccb22 | 191 | manager_flip_auto_status(m, true); |
d450b6f2 | 192 | |
03b717a3 MS |
193 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
194 | ||
195 | HASHMAP_FOREACH(j, m->jobs, i) | |
196 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
197 | break; | |
198 | ||
e970a72e MS |
199 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
200 | * so the above loop must have succeeded in finding j. */ | |
201 | assert(counter == print_nr + 1); | |
51d122af | 202 | assert(j); |
5a82a91a | 203 | |
03b717a3 MS |
204 | cylon_pos = m->jobs_in_progress_iteration % 14; |
205 | if (cylon_pos >= 8) | |
206 | cylon_pos = 14 - cylon_pos; | |
207 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
208 | ||
8bb310c3 ZJS |
209 | m->jobs_in_progress_iteration++; |
210 | ||
d6483ba7 ZJS |
211 | if (m->n_running_jobs > 1) { |
212 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
213 | job_of_n = NULL; | |
214 | } | |
03b717a3 | 215 | |
8bb310c3 ZJS |
216 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
217 | if (job_get_timeout(j, &x) > 0) | |
218 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
219 | ||
127d5fd1 | 220 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
221 | "%sA %s job is running for %s (%s / %s)", |
222 | strempty(job_of_n), | |
223 | job_type_to_string(j->type), | |
224 | unit_description(j->unit), | |
225 | time, limit); | |
03b717a3 MS |
226 | } |
227 | ||
e46b13c8 ZJS |
228 | static int have_ask_password(void) { |
229 | _cleanup_closedir_ DIR *dir; | |
230 | ||
231 | dir = opendir("/run/systemd/ask-password"); | |
232 | if (!dir) { | |
233 | if (errno == ENOENT) | |
234 | return false; | |
235 | else | |
236 | return -errno; | |
237 | } | |
238 | ||
239 | for (;;) { | |
240 | struct dirent *de; | |
241 | ||
242 | errno = 0; | |
243 | de = readdir(dir); | |
b3267152 | 244 | if (!de && errno > 0) |
e46b13c8 ZJS |
245 | return -errno; |
246 | if (!de) | |
247 | return false; | |
248 | ||
249 | if (startswith(de->d_name, "ask.")) | |
250 | return true; | |
251 | } | |
252 | } | |
253 | ||
254 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
255 | int fd, uint32_t revents, void *userdata) { | |
256 | Manager *m = userdata; | |
257 | ||
258 | assert(m); | |
259 | ||
260 | flush_fd(fd); | |
261 | ||
262 | m->have_ask_password = have_ask_password(); | |
263 | if (m->have_ask_password < 0) | |
264 | /* Log error but continue. Negative have_ask_password | |
265 | * is treated as unknown status. */ | |
c33b3297 | 266 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
267 | |
268 | return 0; | |
269 | } | |
270 | ||
271 | static void manager_close_ask_password(Manager *m) { | |
272 | assert(m); | |
273 | ||
e46b13c8 | 274 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 275 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
276 | m->have_ask_password = -EINVAL; |
277 | } | |
278 | ||
279 | static int manager_check_ask_password(Manager *m) { | |
280 | int r; | |
281 | ||
282 | assert(m); | |
283 | ||
284 | if (!m->ask_password_event_source) { | |
285 | assert(m->ask_password_inotify_fd < 0); | |
286 | ||
287 | mkdir_p_label("/run/systemd/ask-password", 0755); | |
288 | ||
289 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 MS |
290 | if (m->ask_password_inotify_fd < 0) |
291 | return log_error_errno(errno, "inotify_init1() failed: %m"); | |
e46b13c8 ZJS |
292 | |
293 | if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) { | |
56f64d95 | 294 | log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
295 | manager_close_ask_password(m); |
296 | return -errno; | |
297 | } | |
298 | ||
299 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
300 | m->ask_password_inotify_fd, EPOLLIN, | |
301 | manager_dispatch_ask_password_fd, m); | |
302 | if (r < 0) { | |
56f64d95 | 303 | log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
304 | manager_close_ask_password(m); |
305 | return -errno; | |
306 | } | |
307 | ||
7dfbe2e3 TG |
308 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
309 | ||
e46b13c8 ZJS |
310 | /* Queries might have been added meanwhile... */ |
311 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
312 | m->ask_password_inotify_fd, EPOLLIN, m); | |
313 | } | |
314 | ||
315 | return m->have_ask_password; | |
316 | } | |
317 | ||
31a7eb86 | 318 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
319 | int r; |
320 | ||
718db961 LP |
321 | assert(m); |
322 | ||
323 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
324 | return 0; |
325 | ||
326 | if (m->idle_pipe[2] < 0) | |
327 | return 0; | |
328 | ||
151b9b96 | 329 | 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 |
330 | if (r < 0) |
331 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 332 | |
7dfbe2e3 TG |
333 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
334 | ||
31a7eb86 | 335 | return 0; |
31a7eb86 ZJS |
336 | } |
337 | ||
718db961 LP |
338 | static void manager_close_idle_pipe(Manager *m) { |
339 | assert(m); | |
31a7eb86 | 340 | |
cd72bd8a LP |
341 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
342 | ||
3d94f76c LP |
343 | safe_close_pair(m->idle_pipe); |
344 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
345 | } |
346 | ||
8742514c | 347 | static int manager_setup_time_change(Manager *m) { |
718db961 | 348 | int r; |
b92bea5d ZJS |
349 | |
350 | /* We only care for the cancellation event, hence we set the | |
351 | * timeout to the latest possible value. */ | |
352 | struct itimerspec its = { | |
353 | .it_value.tv_sec = TIME_T_MAX, | |
354 | }; | |
8742514c | 355 | |
718db961 LP |
356 | assert(m); |
357 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
8742514c | 358 | |
0d8c31ff ZJS |
359 | if (m->test_run) |
360 | return 0; | |
361 | ||
8742514c LP |
362 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever |
363 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
364 | ||
718db961 | 365 | m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); |
4a62c710 MS |
366 | if (m->time_change_fd < 0) |
367 | return log_error_errno(errno, "Failed to create timerfd: %m"); | |
8742514c | 368 | |
718db961 | 369 | if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
56f64d95 | 370 | log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); |
03e334a1 | 371 | m->time_change_fd = safe_close(m->time_change_fd); |
8742514c LP |
372 | return 0; |
373 | } | |
374 | ||
151b9b96 | 375 | 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 |
376 | if (r < 0) |
377 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 378 | |
7dfbe2e3 TG |
379 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
380 | ||
8742514c LP |
381 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
80876c20 | 386 | static int enable_special_signals(Manager *m) { |
718db961 | 387 | _cleanup_close_ int fd = -1; |
80876c20 LP |
388 | |
389 | assert(m); | |
390 | ||
37453b3a EV |
391 | if (m->test_run) |
392 | return 0; | |
393 | ||
a41b539e | 394 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
395 | * this will fail with EPERM (older) or EINVAL (newer), so |
396 | * ignore that. */ | |
397 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL) | |
56f64d95 | 398 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 399 | |
a41b539e LP |
400 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
401 | if (fd < 0) { | |
402 | /* Support systems without virtual console */ | |
403 | if (fd != -ENOENT) | |
56f64d95 | 404 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 405 | } else { |
80876c20 LP |
406 | /* Enable that we get SIGWINCH on kbrequest */ |
407 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 408 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
409 | } |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
ce578209 | 414 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
415 | struct sigaction sa = { |
416 | .sa_handler = SIG_DFL, | |
417 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
418 | }; | |
718db961 LP |
419 | sigset_t mask; |
420 | int r; | |
60918275 | 421 | |
ce578209 LP |
422 | assert(m); |
423 | ||
57c0c30e LP |
424 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
425 | ||
4dffec14 LP |
426 | /* We make liberal use of realtime signals here. On |
427 | * Linux/glibc we have 30 of them (with the exception of Linux | |
428 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
429 | * (aka SIGRTMAX). */ | |
7d793605 | 430 | |
4dffec14 | 431 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
432 | sigset_add_many(&mask, |
433 | SIGCHLD, /* Child died */ | |
434 | SIGTERM, /* Reexecute daemon */ | |
435 | SIGHUP, /* Reload configuration */ | |
436 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
437 | SIGUSR2, /* systemd: dump status */ | |
438 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
439 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
440 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 441 | |
7d793605 | 442 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 443 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
444 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
445 | SIGRTMIN+3, /* systemd: start halt.target */ | |
446 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
447 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 448 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
449 | |
450 | /* ... space for more special targets ... */ | |
451 | ||
0003d1ab LP |
452 | SIGRTMIN+13, /* systemd: Immediate halt */ |
453 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
454 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
455 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
456 | |
457 | /* ... space for more immediate system state changes ... */ | |
458 | ||
0658666b LP |
459 | SIGRTMIN+20, /* systemd: enable status messages */ |
460 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
461 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
462 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 463 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
464 | |
465 | /* .. one free signal here ... */ | |
466 | ||
467 | #if !defined(__hppa64__) && !defined(__hppa__) | |
468 | /* Apparently Linux on hppa has fewer RT | |
469 | * signals (SIGRTMAX is SIGRTMIN+25 there), | |
470 | * hence let's not try to make use of them | |
471 | * here. Since these commands are accessible | |
472 | * by different means and only really a safety | |
473 | * net, the missing functionality on hppa | |
474 | * shouldn't matter. */ | |
475 | ||
4cfa2c99 | 476 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
477 | SIGRTMIN+27, /* systemd: set log target to console */ |
478 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
ee33e53a | 479 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */ |
4dffec14 LP |
480 | |
481 | /* ... one free signal here SIGRTMIN+30 ... */ | |
482 | #endif | |
7d793605 | 483 | -1); |
ce578209 LP |
484 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
485 | ||
718db961 LP |
486 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
487 | if (m->signal_fd < 0) | |
ce578209 LP |
488 | return -errno; |
489 | ||
151b9b96 | 490 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
491 | if (r < 0) |
492 | return r; | |
ce578209 | 493 | |
7dfbe2e3 TG |
494 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
495 | ||
d8fdc620 LP |
496 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
497 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
498 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
499 | * status information before detecting that there's no process in a cgroup. */ | |
500 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
501 | if (r < 0) |
502 | return r; | |
503 | ||
463d0d15 | 504 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 505 | return enable_special_signals(m); |
e1414003 | 506 | |
ce578209 LP |
507 | return 0; |
508 | } | |
509 | ||
f069efb4 LP |
510 | static void manager_clean_environment(Manager *m) { |
511 | assert(m); | |
512 | ||
513 | /* Let's remove some environment variables that we | |
514 | * need ourselves to communicate with our clients */ | |
515 | strv_env_unset_many( | |
516 | m->environment, | |
517 | "NOTIFY_SOCKET", | |
518 | "MAINPID", | |
519 | "MANAGERPID", | |
520 | "LISTEN_PID", | |
521 | "LISTEN_FDS", | |
8dd4c05b | 522 | "LISTEN_FDNAMES", |
f069efb4 LP |
523 | "WATCHDOG_PID", |
524 | "WATCHDOG_USEC", | |
525 | NULL); | |
526 | } | |
527 | ||
e21fea24 | 528 | static int manager_default_environment(Manager *m) { |
71ecc858 LP |
529 | assert(m); |
530 | ||
463d0d15 | 531 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
532 | /* The system manager always starts with a clean |
533 | * environment for its children. It does not import | |
534 | * the kernel or the parents exported variables. | |
535 | * | |
536 | * The initial passed environ is untouched to keep | |
537 | * /proc/self/environ valid; it is used for tagging | |
538 | * the init process inside containers. */ | |
43638332 ZJS |
539 | m->environment = strv_new("PATH=" DEFAULT_PATH, |
540 | NULL); | |
e21fea24 KS |
541 | |
542 | /* Import locale variables LC_*= from configuration */ | |
543 | locale_setup(&m->environment); | |
43d03a83 | 544 | } else { |
e21fea24 KS |
545 | /* The user manager passes its own environment |
546 | * along to its children. */ | |
547 | m->environment = strv_copy(environ); | |
43d03a83 LP |
548 | } |
549 | ||
e21fea24 KS |
550 | if (!m->environment) |
551 | return -ENOMEM; | |
8b55b8c4 | 552 | |
f069efb4 | 553 | manager_clean_environment(m); |
9d5a3757 LP |
554 | strv_sort(m->environment); |
555 | ||
e21fea24 | 556 | return 0; |
71ecc858 LP |
557 | } |
558 | ||
463d0d15 | 559 | int manager_new(UnitFileScope scope, bool test_run, Manager **_m) { |
ce578209 | 560 | Manager *m; |
e3dd987c | 561 | int r; |
8e274523 LP |
562 | |
563 | assert(_m); | |
463d0d15 | 564 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 565 | |
915b3753 LP |
566 | m = new0(Manager, 1); |
567 | if (!m) | |
8e274523 | 568 | return -ENOMEM; |
60918275 | 569 | |
463d0d15 | 570 | m->unit_file_scope = scope; |
a16e1123 | 571 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
bd8f585b | 572 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; |
9ded9cd1 | 573 | m->default_tasks_accounting = true; |
79baeeb9 | 574 | m->default_tasks_max = UINT64_MAX; |
80876c20 | 575 | |
463d0d15 LP |
576 | #ifdef ENABLE_EFI |
577 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) | |
578 | boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); | |
579 | #endif | |
580 | ||
f2341e0a | 581 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
582 | if (MANAGER_IS_SYSTEM(m)) { |
583 | m->unit_log_field = "UNIT="; | |
584 | m->unit_log_format_string = "UNIT=%s"; | |
585 | } else { | |
586 | m->unit_log_field = "USER_UNIT="; | |
587 | m->unit_log_format_string = "USER_UNIT=%s"; | |
588 | } | |
f2341e0a | 589 | |
718db961 | 590 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; |
8742514c | 591 | |
d8fdc620 | 592 | m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = |
232f6754 | 593 | m->dev_autofs_fd = m->private_listen_fd = m->cgroup_inotify_fd = |
d8fdc620 | 594 | m->ask_password_inotify_fd = -1; |
d379d442 | 595 | |
00d9ef85 LP |
596 | m->user_lookup_fds[0] = m->user_lookup_fds[1] = -1; |
597 | ||
ea430986 | 598 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 599 | |
e46b13c8 | 600 | m->have_ask_password = -EINVAL; /* we don't know */ |
ae2a2c53 | 601 | m->first_boot = -1; |
e46b13c8 | 602 | |
0d8c31ff ZJS |
603 | m->test_run = test_run; |
604 | ||
2e5c94b9 LP |
605 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
606 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
607 | ||
e21fea24 KS |
608 | r = manager_default_environment(m); |
609 | if (r < 0) | |
1137a57c LP |
610 | goto fail; |
611 | ||
d5099efc | 612 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 613 | if (r < 0) |
60918275 LP |
614 | goto fail; |
615 | ||
d5099efc | 616 | r = hashmap_ensure_allocated(&m->jobs, NULL); |
718db961 | 617 | if (r < 0) |
60918275 LP |
618 | goto fail; |
619 | ||
d5099efc | 620 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); |
718db961 | 621 | if (r < 0) |
9152c765 LP |
622 | goto fail; |
623 | ||
d5099efc | 624 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 625 | if (r < 0) |
05e343b7 LP |
626 | goto fail; |
627 | ||
718db961 LP |
628 | r = sd_event_default(&m->event); |
629 | if (r < 0) | |
8742514c LP |
630 | goto fail; |
631 | ||
151b9b96 | 632 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); |
752b5905 LP |
633 | if (r < 0) |
634 | goto fail; | |
635 | ||
636 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
637 | if (r < 0) | |
638 | goto fail; | |
639 | ||
640 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
641 | if (r < 0) | |
642 | goto fail; | |
643 | ||
7dfbe2e3 TG |
644 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); |
645 | ||
8742514c LP |
646 | r = manager_setup_signals(m); |
647 | if (r < 0) | |
9152c765 LP |
648 | goto fail; |
649 | ||
8742514c LP |
650 | r = manager_setup_cgroup(m); |
651 | if (r < 0) | |
8e274523 LP |
652 | goto fail; |
653 | ||
8742514c LP |
654 | r = manager_setup_time_change(m); |
655 | if (r < 0) | |
8c47c732 LP |
656 | goto fail; |
657 | ||
9670d583 LP |
658 | m->udev = udev_new(); |
659 | if (!m->udev) { | |
660 | r = -ENOMEM; | |
661 | goto fail; | |
662 | } | |
663 | ||
232f6754 ZJS |
664 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
665 | * since they might have gotten serialized across the reexec. */ | |
d86f9d52 | 666 | |
72bc8d00 LP |
667 | m->taint_usr = dir_is_empty("/usr") > 0; |
668 | ||
8e274523 LP |
669 | *_m = m; |
670 | return 0; | |
60918275 LP |
671 | |
672 | fail: | |
673 | manager_free(m); | |
8e274523 | 674 | return r; |
60918275 LP |
675 | } |
676 | ||
d86f9d52 | 677 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 678 | int r; |
d86f9d52 | 679 | |
0d8c31ff ZJS |
680 | if (m->test_run) |
681 | return 0; | |
682 | ||
d86f9d52 LP |
683 | if (m->notify_fd < 0) { |
684 | _cleanup_close_ int fd = -1; | |
920b52e4 | 685 | union sockaddr_union sa = { |
7181dbdb LP |
686 | .sa.sa_family = AF_UNIX, |
687 | }; | |
55836941 | 688 | static const int one = 1; |
92dd7c49 | 689 | const char *e; |
d86f9d52 LP |
690 | |
691 | /* First free all secondary fields */ | |
a1e58e8e | 692 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
693 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
694 | ||
695 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
696 | if (fd < 0) |
697 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 698 | |
a47806fa LP |
699 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
700 | ||
92dd7c49 LP |
701 | e = manager_get_runtime_prefix(m); |
702 | if (!e) { | |
703 | log_error("Failed to determine runtime prefix."); | |
704 | return -EINVAL; | |
7181dbdb | 705 | } |
92dd7c49 LP |
706 | |
707 | m->notify_socket = strappend(e, "/systemd/notify"); | |
498e87d6 LP |
708 | if (!m->notify_socket) |
709 | return log_oom(); | |
710 | ||
711 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
f0e62e89 | 712 | (void) unlink(m->notify_socket); |
7181dbdb LP |
713 | |
714 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
fc2fffe7 | 715 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
4a62c710 MS |
716 | if (r < 0) |
717 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
d86f9d52 LP |
718 | |
719 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
720 | if (r < 0) |
721 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
d86f9d52 | 722 | |
d86f9d52 LP |
723 | m->notify_fd = fd; |
724 | fd = -1; | |
725 | ||
726 | log_debug("Using notification socket %s", m->notify_socket); | |
727 | } | |
728 | ||
729 | if (!m->notify_event_source) { | |
151b9b96 | 730 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
731 | if (r < 0) |
732 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 733 | |
d8fdc620 LP |
734 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
735 | * service an exit message belongs. */ | |
df006034 | 736 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7); |
23bbb0de MS |
737 | if (r < 0) |
738 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
739 | |
740 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
741 | } |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
d8fdc620 LP |
746 | static int manager_setup_cgroups_agent(Manager *m) { |
747 | ||
748 | static const union sockaddr_union sa = { | |
749 | .un.sun_family = AF_UNIX, | |
750 | .un.sun_path = "/run/systemd/cgroups-agent", | |
751 | }; | |
752 | int r; | |
753 | ||
754 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
755 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
756 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
757 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
758 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
759 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
760 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
761 | * we thus won't lose messages. | |
762 | * | |
763 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
764 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
765 | * bus for these messages. */ | |
766 | ||
767 | if (m->test_run) | |
768 | return 0; | |
769 | ||
770 | if (!MANAGER_IS_SYSTEM(m)) | |
771 | return 0; | |
772 | ||
5da38d07 | 773 | if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) > 0) /* We don't need this anymore on the unified hierarchy */ |
d8fdc620 LP |
774 | return 0; |
775 | ||
776 | if (m->cgroups_agent_fd < 0) { | |
777 | _cleanup_close_ int fd = -1; | |
778 | ||
779 | /* First free all secondary fields */ | |
780 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
781 | ||
782 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
783 | if (fd < 0) | |
784 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
785 | ||
786 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
787 | ||
788 | (void) unlink(sa.un.sun_path); | |
789 | ||
790 | /* Only allow root to connect to this socket */ | |
791 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 792 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
793 | if (r < 0) |
794 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
795 | ||
796 | m->cgroups_agent_fd = fd; | |
797 | fd = -1; | |
798 | } | |
799 | ||
800 | if (!m->cgroups_agent_event_source) { | |
801 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
802 | if (r < 0) | |
803 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
804 | ||
805 | /* Process cgroups notifications early, but after having processed service notification messages or | |
806 | * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, | |
807 | * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of | |
808 | * cgroup inotify for the unified cgroup stuff. */ | |
809 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5); | |
810 | if (r < 0) | |
811 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
812 | ||
813 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
814 | } | |
815 | ||
816 | return 0; | |
817 | } | |
818 | ||
00d9ef85 LP |
819 | static int manager_setup_user_lookup_fd(Manager *m) { |
820 | int r; | |
821 | ||
822 | assert(m); | |
823 | ||
824 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
825 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
826 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
827 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
828 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
829 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
830 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
831 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
832 | * this purpose. | |
833 | * | |
834 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
835 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
836 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
837 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
838 | * | |
839 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
840 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
841 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
842 | ||
843 | if (m->user_lookup_fds[0] < 0) { | |
844 | ||
845 | /* Free all secondary fields */ | |
846 | safe_close_pair(m->user_lookup_fds); | |
847 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
848 | ||
849 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
850 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
851 | ||
852 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
853 | } | |
854 | ||
855 | if (!m->user_lookup_event_source) { | |
856 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
857 | if (r < 0) | |
858 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
859 | ||
860 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
861 | * resolutions */ | |
862 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-8); | |
863 | if (r < 0) | |
864 | return log_error_errno(errno, "Failed to set priority ot user lookup event source: %m"); | |
865 | ||
866 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
d86f9d52 LP |
872 | static int manager_connect_bus(Manager *m, bool reexecuting) { |
873 | bool try_bus_connect; | |
874 | ||
875 | assert(m); | |
876 | ||
0d8c31ff ZJS |
877 | if (m->test_run) |
878 | return 0; | |
879 | ||
d86f9d52 | 880 | try_bus_connect = |
d86f9d52 | 881 | reexecuting || |
463d0d15 | 882 | (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS")); |
d86f9d52 | 883 | |
ff9b60f3 | 884 | /* Try to connect to the buses, if possible. */ |
d86f9d52 LP |
885 | return bus_init(m, try_bus_connect); |
886 | } | |
887 | ||
23a177ef | 888 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 889 | Unit *u; |
23a177ef LP |
890 | unsigned n = 0; |
891 | ||
892 | assert(m); | |
893 | ||
595ed347 MS |
894 | while ((u = m->cleanup_queue)) { |
895 | assert(u->in_cleanup_queue); | |
23a177ef | 896 | |
595ed347 | 897 | unit_free(u); |
23a177ef LP |
898 | n++; |
899 | } | |
900 | ||
901 | return n; | |
902 | } | |
903 | ||
eced69b3 | 904 | enum { |
35b8ca3a | 905 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
906 | GC_OFFSET_UNSURE, /* No clue */ |
907 | GC_OFFSET_GOOD, /* We still need this unit */ | |
908 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
909 | _GC_OFFSET_MAX | |
910 | }; | |
911 | ||
00d9ef85 | 912 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
913 | Iterator i; |
914 | Unit *other; | |
915 | ||
916 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
917 | ||
918 | /* Recursively mark referenced units as GOOD as well */ | |
919 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCES], i) | |
920 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) | |
921 | unit_gc_mark_good(other, gc_marker); | |
922 | } | |
923 | ||
eced69b3 | 924 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 LP |
925 | Iterator i; |
926 | Unit *other; | |
eced69b3 | 927 | bool is_bad; |
701cc384 LP |
928 | |
929 | assert(u); | |
930 | ||
ac155bb8 MS |
931 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
932 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
4892084f | 933 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE || |
ac155bb8 | 934 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) |
701cc384 LP |
935 | return; |
936 | ||
ac155bb8 | 937 | if (u->in_cleanup_queue) |
701cc384 LP |
938 | goto bad; |
939 | ||
940 | if (unit_check_gc(u)) | |
941 | goto good; | |
942 | ||
ac155bb8 | 943 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
944 | |
945 | is_bad = true; | |
946 | ||
ac155bb8 | 947 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
948 | unit_gc_sweep(other, gc_marker); |
949 | ||
ac155bb8 | 950 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 951 | goto good; |
eced69b3 | 952 | |
ac155bb8 | 953 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 954 | is_bad = false; |
701cc384 LP |
955 | } |
956 | ||
eced69b3 LP |
957 | if (is_bad) |
958 | goto bad; | |
959 | ||
960 | /* We were unable to find anything out about this entry, so | |
961 | * let's investigate it later */ | |
ac155bb8 | 962 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
963 | unit_add_to_gc_queue(u); |
964 | return; | |
965 | ||
701cc384 | 966 | bad: |
eced69b3 LP |
967 | /* We definitely know that this one is not useful anymore, so |
968 | * let's mark it for deletion */ | |
ac155bb8 | 969 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 970 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
971 | return; |
972 | ||
973 | good: | |
4892084f | 974 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
975 | } |
976 | ||
977 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
595ed347 | 978 | Unit *u; |
701cc384 | 979 | unsigned n = 0; |
eced69b3 | 980 | unsigned gc_marker; |
701cc384 LP |
981 | |
982 | assert(m); | |
983 | ||
cf1265e1 | 984 | /* log_debug("Running GC..."); */ |
701cc384 | 985 | |
eced69b3 LP |
986 | m->gc_marker += _GC_OFFSET_MAX; |
987 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 988 | m->gc_marker = 1; |
701cc384 | 989 | |
eced69b3 LP |
990 | gc_marker = m->gc_marker; |
991 | ||
595ed347 MS |
992 | while ((u = m->gc_queue)) { |
993 | assert(u->in_gc_queue); | |
701cc384 | 994 | |
595ed347 | 995 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 996 | |
71fda00f | 997 | LIST_REMOVE(gc_queue, m->gc_queue, u); |
595ed347 | 998 | u->in_gc_queue = false; |
701cc384 LP |
999 | |
1000 | n++; | |
1001 | ||
595ed347 MS |
1002 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
1003 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
cc3bc3e6 | 1004 | if (u->id) |
f2341e0a | 1005 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1006 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1007 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1008 | } |
1009 | } | |
1010 | ||
1011 | m->n_in_gc_queue = 0; | |
701cc384 LP |
1012 | |
1013 | return n; | |
1014 | } | |
1015 | ||
a16e1123 | 1016 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1017 | Unit *u; |
60918275 LP |
1018 | |
1019 | assert(m); | |
1020 | ||
87f0e418 LP |
1021 | while ((u = hashmap_first(m->units))) |
1022 | unit_free(u); | |
964e0949 LP |
1023 | |
1024 | manager_dispatch_cleanup_queue(m); | |
1025 | ||
1026 | assert(!m->load_queue); | |
1027 | assert(!m->run_queue); | |
1028 | assert(!m->dbus_unit_queue); | |
1029 | assert(!m->dbus_job_queue); | |
1030 | assert(!m->cleanup_queue); | |
1031 | assert(!m->gc_queue); | |
1032 | ||
964e0949 LP |
1033 | assert(hashmap_isempty(m->jobs)); |
1034 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1035 | |
1036 | m->n_on_console = 0; | |
1037 | m->n_running_jobs = 0; | |
a16e1123 LP |
1038 | } |
1039 | ||
06d8d842 | 1040 | Manager* manager_free(Manager *m) { |
a16e1123 | 1041 | UnitType c; |
c93ff2e9 | 1042 | int i; |
87f0e418 | 1043 | |
06d8d842 ZJS |
1044 | if (!m) |
1045 | return NULL; | |
a16e1123 LP |
1046 | |
1047 | manager_clear_jobs_and_units(m); | |
23a177ef | 1048 | |
7824bbeb LP |
1049 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
1050 | if (unit_vtable[c]->shutdown) | |
1051 | unit_vtable[c]->shutdown(m); | |
1052 | ||
a16e1123 LP |
1053 | /* If we reexecute ourselves, we keep the root cgroup |
1054 | * around */ | |
c6c18be3 | 1055 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 1056 | |
07a78643 | 1057 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1058 | |
5e8d1c9a | 1059 | bus_done(m); |
ea430986 | 1060 | |
29206d46 LP |
1061 | dynamic_user_vacuum(m, false); |
1062 | hashmap_free(m->dynamic_users); | |
1063 | ||
87f0e418 | 1064 | hashmap_free(m->units); |
60918275 | 1065 | hashmap_free(m->jobs); |
5ba6985b LP |
1066 | hashmap_free(m->watch_pids1); |
1067 | hashmap_free(m->watch_pids2); | |
05e343b7 | 1068 | hashmap_free(m->watch_bus); |
9152c765 | 1069 | |
95ae05c0 | 1070 | set_free(m->startup_units); |
f755e3b7 LP |
1071 | set_free(m->failed_units); |
1072 | ||
718db961 LP |
1073 | sd_event_source_unref(m->signal_event_source); |
1074 | sd_event_source_unref(m->notify_event_source); | |
d8fdc620 | 1075 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 LP |
1076 | sd_event_source_unref(m->time_change_event_source); |
1077 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
752b5905 | 1078 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1079 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1080 | |
03e334a1 LP |
1081 | safe_close(m->signal_fd); |
1082 | safe_close(m->notify_fd); | |
d8fdc620 | 1083 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1084 | safe_close(m->time_change_fd); |
00d9ef85 | 1085 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1086 | |
e46b13c8 ZJS |
1087 | manager_close_ask_password(m); |
1088 | ||
718db961 LP |
1089 | manager_close_idle_pipe(m); |
1090 | ||
9670d583 | 1091 | udev_unref(m->udev); |
718db961 | 1092 | sd_event_unref(m->event); |
60918275 | 1093 | |
c952c6ec LP |
1094 | free(m->notify_socket); |
1095 | ||
84e3543e | 1096 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 1097 | strv_free(m->environment); |
036643a2 | 1098 | |
4ad49000 | 1099 | hashmap_free(m->cgroup_unit); |
c6c18be3 | 1100 | set_free_free(m->unit_path_cache); |
33be102a | 1101 | |
664f88a7 LP |
1102 | free(m->switch_root); |
1103 | free(m->switch_root_init); | |
1104 | ||
517d56b1 | 1105 | for (i = 0; i < _RLIMIT_MAX; i++) |
d9814c76 | 1106 | m->rlimit[i] = mfree(m->rlimit[i]); |
c93ff2e9 | 1107 | |
a57f7e2c LP |
1108 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1109 | hashmap_free(m->units_requiring_mounts_for); | |
1110 | ||
00d9ef85 LP |
1111 | hashmap_free(m->uid_refs); |
1112 | hashmap_free(m->gid_refs); | |
1113 | ||
60918275 | 1114 | free(m); |
06d8d842 | 1115 | return NULL; |
60918275 LP |
1116 | } |
1117 | ||
ba64af90 | 1118 | void manager_enumerate(Manager *m) { |
f50e0a01 | 1119 | UnitType c; |
f50e0a01 LP |
1120 | |
1121 | assert(m); | |
1122 | ||
a16e1123 LP |
1123 | /* Let's ask every type to load all units from disk/kernel |
1124 | * that it might know */ | |
0faacd47 | 1125 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1126 | if (!unit_type_supported(c)) { |
03afec3c | 1127 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1128 | continue; |
a57f7e2c | 1129 | } |
f50e0a01 | 1130 | |
0faacd47 LP |
1131 | if (!unit_vtable[c]->enumerate) |
1132 | continue; | |
1133 | ||
ba64af90 | 1134 | unit_vtable[c]->enumerate(m); |
0faacd47 LP |
1135 | } |
1136 | ||
f50e0a01 | 1137 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1138 | } |
1139 | ||
007c6337 | 1140 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1141 | Iterator i; |
1142 | Unit *u; | |
1143 | char *k; | |
007c6337 | 1144 | int r; |
a16e1123 LP |
1145 | |
1146 | assert(m); | |
f50e0a01 LP |
1147 | |
1148 | /* Then, let's set up their initial state. */ | |
1149 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1150 | ||
1151 | /* ignore aliases */ | |
ac155bb8 | 1152 | if (u->id != k) |
f50e0a01 LP |
1153 | continue; |
1154 | ||
007c6337 LP |
1155 | r = unit_coldplug(u); |
1156 | if (r < 0) | |
1157 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1158 | } |
a16e1123 LP |
1159 | } |
1160 | ||
fe51822e LP |
1161 | static void manager_build_unit_path_cache(Manager *m) { |
1162 | char **i; | |
fe51822e LP |
1163 | int r; |
1164 | ||
1165 | assert(m); | |
1166 | ||
1167 | set_free_free(m->unit_path_cache); | |
1168 | ||
d5099efc | 1169 | m->unit_path_cache = set_new(&string_hash_ops); |
874310b7 | 1170 | if (!m->unit_path_cache) { |
d063a527 LP |
1171 | r = -ENOMEM; |
1172 | goto fail; | |
fe51822e LP |
1173 | } |
1174 | ||
1175 | /* This simply builds a list of files we know exist, so that | |
1176 | * we don't always have to go to disk */ | |
1177 | ||
a3c4eb07 | 1178 | STRV_FOREACH(i, m->lookup_paths.search_path) { |
d063a527 | 1179 | _cleanup_closedir_ DIR *d = NULL; |
fe51822e LP |
1180 | struct dirent *de; |
1181 | ||
bd0af849 ZJS |
1182 | d = opendir(*i); |
1183 | if (!d) { | |
874310b7 | 1184 | if (errno != ENOENT) |
d063a527 | 1185 | log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); |
fe51822e LP |
1186 | continue; |
1187 | } | |
1188 | ||
d063a527 | 1189 | FOREACH_DIRENT(de, d, r = -errno; goto fail) { |
fe51822e LP |
1190 | char *p; |
1191 | ||
b7def684 | 1192 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
44d91056 | 1193 | if (!p) { |
fe51822e LP |
1194 | r = -ENOMEM; |
1195 | goto fail; | |
1196 | } | |
1197 | ||
ef42202a ZJS |
1198 | r = set_consume(m->unit_path_cache, p); |
1199 | if (r < 0) | |
fe51822e | 1200 | goto fail; |
fe51822e | 1201 | } |
fe51822e LP |
1202 | } |
1203 | ||
1204 | return; | |
1205 | ||
1206 | fail: | |
d063a527 LP |
1207 | log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); |
1208 | m->unit_path_cache = set_free_free(m->unit_path_cache); | |
fe51822e LP |
1209 | } |
1210 | ||
9ff1a6f1 | 1211 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1212 | Iterator i; |
9ff1a6f1 | 1213 | Unit *u; |
9588bc32 LP |
1214 | |
1215 | assert(m); | |
1216 | ||
1217 | HASHMAP_FOREACH(u, m->units, i) { | |
1218 | ||
1219 | if (fdset_size(fds) <= 0) | |
1220 | break; | |
1221 | ||
9ff1a6f1 LP |
1222 | if (!UNIT_VTABLE(u)->distribute_fds) |
1223 | continue; | |
9588bc32 | 1224 | |
9ff1a6f1 LP |
1225 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1226 | } | |
9588bc32 LP |
1227 | } |
1228 | ||
a16e1123 LP |
1229 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
1230 | int r, q; | |
1231 | ||
1232 | assert(m); | |
1233 | ||
4943d143 | 1234 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
1235 | if (r < 0) |
1236 | return r; | |
5a1e9937 | 1237 | |
39591351 | 1238 | /* Make sure the transient directory always exists, so that it remains in the search path */ |
a63ee407 ZJS |
1239 | if (!m->test_run) { |
1240 | r = mkdir_p_label(m->lookup_paths.transient, 0755); | |
1241 | if (r < 0) | |
1242 | return r; | |
1243 | } | |
39591351 | 1244 | |
a3c4eb07 LP |
1245 | dual_timestamp_get(&m->generators_start_timestamp); |
1246 | r = manager_run_generators(m); | |
1247 | dual_timestamp_get(&m->generators_finish_timestamp); | |
07719a21 LP |
1248 | if (r < 0) |
1249 | return r; | |
1250 | ||
a1453343 | 1251 | lookup_paths_reduce(&m->lookup_paths); |
fe51822e LP |
1252 | manager_build_unit_path_cache(m); |
1253 | ||
9f611ad8 LP |
1254 | /* If we will deserialize make sure that during enumeration |
1255 | * this is already known, so we increase the counter here | |
1256 | * already */ | |
1257 | if (serialization) | |
313cefa1 | 1258 | m->n_reloading++; |
9f611ad8 | 1259 | |
a16e1123 | 1260 | /* First, enumerate what we can from all config files */ |
718db961 | 1261 | dual_timestamp_get(&m->units_load_start_timestamp); |
ba64af90 | 1262 | manager_enumerate(m); |
718db961 | 1263 | dual_timestamp_get(&m->units_load_finish_timestamp); |
a16e1123 LP |
1264 | |
1265 | /* Second, deserialize if there is something to deserialize */ | |
1cd974ed ZJS |
1266 | if (serialization) |
1267 | r = manager_deserialize(m, serialization, fds); | |
a16e1123 | 1268 | |
01e10de3 LP |
1269 | /* Any fds left? Find some unit which wants them. This is |
1270 | * useful to allow container managers to pass some file | |
1271 | * descriptors to us pre-initialized. This enables | |
1272 | * socket-based activation of entire containers. */ | |
9ff1a6f1 | 1273 | manager_distribute_fds(m, fds); |
01e10de3 | 1274 | |
d86f9d52 LP |
1275 | /* We might have deserialized the notify fd, but if we didn't |
1276 | * then let's create the bus now */ | |
1cd974ed ZJS |
1277 | q = manager_setup_notify(m); |
1278 | if (q < 0 && r == 0) | |
1279 | r = q; | |
d86f9d52 | 1280 | |
d8fdc620 LP |
1281 | q = manager_setup_cgroups_agent(m); |
1282 | if (q < 0 && r == 0) | |
1283 | r = q; | |
1284 | ||
00d9ef85 LP |
1285 | q = manager_setup_user_lookup_fd(m); |
1286 | if (q < 0 && r == 0) | |
1287 | r = q; | |
1288 | ||
232f6754 | 1289 | /* Let's connect to the bus now. */ |
05a98afd LP |
1290 | (void) manager_connect_bus(m, !!serialization); |
1291 | ||
1292 | (void) bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); | |
1293 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
e3dd987c | 1294 | |
a16e1123 | 1295 | /* Third, fire things up! */ |
007c6337 | 1296 | manager_coldplug(m); |
a16e1123 | 1297 | |
29206d46 LP |
1298 | /* Release any dynamic users no longer referenced */ |
1299 | dynamic_user_vacuum(m, true); | |
1300 | ||
00d9ef85 LP |
1301 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
1302 | manager_vacuum_uid_refs(m); | |
1303 | manager_vacuum_gid_refs(m); | |
1304 | ||
9f611ad8 | 1305 | if (serialization) { |
a7556052 | 1306 | assert(m->n_reloading > 0); |
313cefa1 | 1307 | m->n_reloading--; |
71445ae7 LP |
1308 | |
1309 | /* Let's wait for the UnitNew/JobNew messages being | |
1310 | * sent, before we notify that the reload is | |
1311 | * finished */ | |
1312 | m->send_reloading_done = true; | |
9f611ad8 LP |
1313 | } |
1314 | ||
a16e1123 | 1315 | return r; |
f50e0a01 LP |
1316 | } |
1317 | ||
4bd29fe5 | 1318 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) { |
e5b5ae50 | 1319 | int r; |
7527cb52 | 1320 | Transaction *tr; |
e5b5ae50 LP |
1321 | |
1322 | assert(m); | |
1323 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1324 | assert(unit); |
e5b5ae50 | 1325 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1326 | |
7358dc02 ZJS |
1327 | if (mode == JOB_ISOLATE && type != JOB_START) |
1328 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
c497c7a9 | 1329 | |
7358dc02 ZJS |
1330 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1331 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
2528a7a6 | 1332 | |
f2341e0a | 1333 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1334 | |
c6497ccb | 1335 | type = job_type_collapse(type, unit); |
e0209d83 | 1336 | |
23ade460 | 1337 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1338 | if (!tr) |
1339 | return -ENOMEM; | |
11dd41ce | 1340 | |
4bd29fe5 | 1341 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
7527cb52 | 1342 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, |
b94fbd30 | 1343 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
1344 | if (r < 0) |
1345 | goto tr_abort; | |
c497c7a9 | 1346 | |
7527cb52 MS |
1347 | if (mode == JOB_ISOLATE) { |
1348 | r = transaction_add_isolate_jobs(tr, m); | |
1349 | if (r < 0) | |
1350 | goto tr_abort; | |
1351 | } | |
1352 | ||
1353 | r = transaction_activate(tr, m, mode, e); | |
1354 | if (r < 0) | |
1355 | goto tr_abort; | |
e5b5ae50 | 1356 | |
f2341e0a | 1357 | log_unit_debug(unit, |
66870f90 ZJS |
1358 | "Enqueued job %s/%s as %u", unit->id, |
1359 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1360 | |
e5b5ae50 | 1361 | if (_ret) |
b94fbd30 | 1362 | *_ret = tr->anchor_job; |
60918275 | 1363 | |
7527cb52 | 1364 | transaction_free(tr); |
e5b5ae50 | 1365 | return 0; |
7527cb52 MS |
1366 | |
1367 | tr_abort: | |
1368 | transaction_abort(tr); | |
1369 | transaction_free(tr); | |
1370 | return r; | |
e5b5ae50 | 1371 | } |
60918275 | 1372 | |
53f18416 | 1373 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) { |
28247076 LP |
1374 | Unit *unit; |
1375 | int r; | |
1376 | ||
1377 | assert(m); | |
1378 | assert(type < _JOB_TYPE_MAX); | |
1379 | assert(name); | |
1380 | assert(mode < _JOB_MODE_MAX); | |
1381 | ||
c3090674 LP |
1382 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1383 | if (r < 0) | |
28247076 LP |
1384 | return r; |
1385 | ||
53f18416 LP |
1386 | return manager_add_job(m, type, unit, mode, e, ret); |
1387 | } | |
1388 | ||
1389 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) { | |
4afd3348 | 1390 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1391 | int r; |
1392 | ||
1393 | assert(m); | |
1394 | assert(type < _JOB_TYPE_MAX); | |
1395 | assert(name); | |
1396 | assert(mode < _JOB_MODE_MAX); | |
1397 | ||
1398 | r = manager_add_job_by_name(m, type, name, mode, &error, ret); | |
1399 | if (r < 0) | |
1400 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1401 | ||
1402 | return r; | |
28247076 LP |
1403 | } |
1404 | ||
60918275 LP |
1405 | Job *manager_get_job(Manager *m, uint32_t id) { |
1406 | assert(m); | |
1407 | ||
1408 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1409 | } | |
1410 | ||
87f0e418 | 1411 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1412 | assert(m); |
1413 | assert(name); | |
1414 | ||
87f0e418 | 1415 | return hashmap_get(m->units, name); |
60918275 LP |
1416 | } |
1417 | ||
c1e1601e | 1418 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1419 | Unit *u; |
c1e1601e | 1420 | unsigned n = 0; |
60918275 LP |
1421 | |
1422 | assert(m); | |
1423 | ||
223dabab LP |
1424 | /* Make sure we are not run recursively */ |
1425 | if (m->dispatching_load_queue) | |
c1e1601e | 1426 | return 0; |
223dabab LP |
1427 | |
1428 | m->dispatching_load_queue = true; | |
1429 | ||
87f0e418 | 1430 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1431 | * tries to load its data until the queue is empty */ |
1432 | ||
595ed347 MS |
1433 | while ((u = m->load_queue)) { |
1434 | assert(u->in_load_queue); | |
034c6ed7 | 1435 | |
595ed347 | 1436 | unit_load(u); |
c1e1601e | 1437 | n++; |
60918275 LP |
1438 | } |
1439 | ||
223dabab | 1440 | m->dispatching_load_queue = false; |
c1e1601e | 1441 | return n; |
60918275 LP |
1442 | } |
1443 | ||
c2756a68 LP |
1444 | int manager_load_unit_prepare( |
1445 | Manager *m, | |
1446 | const char *name, | |
1447 | const char *path, | |
718db961 | 1448 | sd_bus_error *e, |
c2756a68 LP |
1449 | Unit **_ret) { |
1450 | ||
87f0e418 | 1451 | Unit *ret; |
7d17cfbc | 1452 | UnitType t; |
60918275 LP |
1453 | int r; |
1454 | ||
1455 | assert(m); | |
9e2f7c11 | 1456 | assert(name || path); |
60918275 | 1457 | |
db06e3b6 LP |
1458 | /* This will prepare the unit for loading, but not actually |
1459 | * load anything from disk. */ | |
0301abf4 | 1460 | |
718db961 LP |
1461 | if (path && !is_path(path)) |
1462 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 LP |
1463 | |
1464 | if (!name) | |
2b6bf07d | 1465 | name = basename(path); |
9e2f7c11 | 1466 | |
7d17cfbc MS |
1467 | t = unit_name_to_type(name); |
1468 | ||
5d512d54 LN |
1469 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1470 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1471 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1472 | ||
718db961 | 1473 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1474 | } |
60918275 | 1475 | |
7d17cfbc MS |
1476 | ret = manager_get_unit(m, name); |
1477 | if (ret) { | |
034c6ed7 | 1478 | *_ret = ret; |
413d6313 | 1479 | return 1; |
034c6ed7 | 1480 | } |
60918275 | 1481 | |
7d17cfbc MS |
1482 | ret = unit_new(m, unit_vtable[t]->object_size); |
1483 | if (!ret) | |
60918275 LP |
1484 | return -ENOMEM; |
1485 | ||
7d17cfbc | 1486 | if (path) { |
ac155bb8 MS |
1487 | ret->fragment_path = strdup(path); |
1488 | if (!ret->fragment_path) { | |
0301abf4 LP |
1489 | unit_free(ret); |
1490 | return -ENOMEM; | |
1491 | } | |
7d17cfbc | 1492 | } |
0301abf4 | 1493 | |
1058cbf2 ZJS |
1494 | r = unit_add_name(ret, name); |
1495 | if (r < 0) { | |
87f0e418 | 1496 | unit_free(ret); |
1ffba6fe | 1497 | return r; |
60918275 LP |
1498 | } |
1499 | ||
87f0e418 | 1500 | unit_add_to_load_queue(ret); |
c1e1601e | 1501 | unit_add_to_dbus_queue(ret); |
949061f0 | 1502 | unit_add_to_gc_queue(ret); |
c1e1601e | 1503 | |
db06e3b6 LP |
1504 | if (_ret) |
1505 | *_ret = ret; | |
1506 | ||
1507 | return 0; | |
1508 | } | |
1509 | ||
c2756a68 LP |
1510 | int manager_load_unit( |
1511 | Manager *m, | |
1512 | const char *name, | |
1513 | const char *path, | |
718db961 | 1514 | sd_bus_error *e, |
c2756a68 LP |
1515 | Unit **_ret) { |
1516 | ||
db06e3b6 LP |
1517 | int r; |
1518 | ||
1519 | assert(m); | |
1520 | ||
1521 | /* This will load the service information files, but not actually | |
1522 | * start any services or anything. */ | |
1523 | ||
c3090674 LP |
1524 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
1525 | if (r != 0) | |
db06e3b6 LP |
1526 | return r; |
1527 | ||
f50e0a01 | 1528 | manager_dispatch_load_queue(m); |
60918275 | 1529 | |
9e2f7c11 | 1530 | if (_ret) |
413d6313 | 1531 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1532 | |
60918275 LP |
1533 | return 0; |
1534 | } | |
a66d02c3 | 1535 | |
cea8e32e | 1536 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1537 | Iterator i; |
a66d02c3 LP |
1538 | Job *j; |
1539 | ||
1540 | assert(s); | |
1541 | assert(f); | |
1542 | ||
034c6ed7 | 1543 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1544 | job_dump(j, f, prefix); |
a66d02c3 LP |
1545 | } |
1546 | ||
87f0e418 | 1547 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1548 | Iterator i; |
87f0e418 | 1549 | Unit *u; |
11dd41ce | 1550 | const char *t; |
a66d02c3 LP |
1551 | |
1552 | assert(s); | |
1553 | assert(f); | |
1554 | ||
87f0e418 | 1555 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 1556 | if (u->id == t) |
87f0e418 | 1557 | unit_dump(u, f, prefix); |
a66d02c3 | 1558 | } |
7fad411c LP |
1559 | |
1560 | void manager_clear_jobs(Manager *m) { | |
1561 | Job *j; | |
1562 | ||
1563 | assert(m); | |
1564 | ||
7fad411c | 1565 | while ((j = hashmap_first(m->jobs))) |
5273510e | 1566 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 1567 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 1568 | } |
83c60c9f | 1569 | |
752b5905 LP |
1570 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
1571 | Manager *m = userdata; | |
83c60c9f | 1572 | Job *j; |
034c6ed7 | 1573 | |
752b5905 LP |
1574 | assert(source); |
1575 | assert(m); | |
9152c765 | 1576 | |
034c6ed7 | 1577 | while ((j = m->run_queue)) { |
ac1135be | 1578 | assert(j->installed); |
034c6ed7 LP |
1579 | assert(j->in_run_queue); |
1580 | ||
1581 | job_run_and_invalidate(j); | |
9152c765 | 1582 | } |
034c6ed7 | 1583 | |
a0b64226 | 1584 | if (m->n_running_jobs > 0) |
03b717a3 MS |
1585 | manager_watch_jobs_in_progress(m); |
1586 | ||
31a7eb86 ZJS |
1587 | if (m->n_on_console > 0) |
1588 | manager_watch_idle_pipe(m); | |
1589 | ||
752b5905 | 1590 | return 1; |
c1e1601e LP |
1591 | } |
1592 | ||
9588bc32 | 1593 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
c1e1601e | 1594 | Job *j; |
595ed347 | 1595 | Unit *u; |
c1e1601e LP |
1596 | unsigned n = 0; |
1597 | ||
1598 | assert(m); | |
1599 | ||
1600 | if (m->dispatching_dbus_queue) | |
1601 | return 0; | |
1602 | ||
1603 | m->dispatching_dbus_queue = true; | |
1604 | ||
595ed347 MS |
1605 | while ((u = m->dbus_unit_queue)) { |
1606 | assert(u->in_dbus_queue); | |
c1e1601e | 1607 | |
595ed347 | 1608 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1609 | n++; |
1610 | } | |
1611 | ||
1612 | while ((j = m->dbus_job_queue)) { | |
1613 | assert(j->in_dbus_queue); | |
1614 | ||
1615 | bus_job_send_change_signal(j); | |
1616 | n++; | |
1617 | } | |
1618 | ||
1619 | m->dispatching_dbus_queue = false; | |
71445ae7 LP |
1620 | |
1621 | if (m->send_reloading_done) { | |
1622 | m->send_reloading_done = false; | |
1623 | ||
718db961 | 1624 | bus_manager_send_reloading(m, false); |
71445ae7 LP |
1625 | } |
1626 | ||
718db961 LP |
1627 | if (m->queued_message) |
1628 | bus_send_queued_message(m); | |
1629 | ||
c1e1601e | 1630 | return n; |
9152c765 LP |
1631 | } |
1632 | ||
d8fdc620 LP |
1633 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1634 | Manager *m = userdata; | |
1635 | char buf[PATH_MAX+1]; | |
1636 | ssize_t n; | |
1637 | ||
1638 | n = recv(fd, buf, sizeof(buf), 0); | |
1639 | if (n < 0) | |
1640 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
1641 | if (n == 0) { | |
1642 | log_error("Got zero-length cgroups agent message, ignoring."); | |
1643 | return 0; | |
1644 | } | |
1645 | if ((size_t) n >= sizeof(buf)) { | |
1646 | log_error("Got overly long cgroups agent message, ignoring."); | |
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | if (memchr(buf, 0, n)) { | |
1651 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
1652 | return 0; | |
1653 | } | |
1654 | buf[n] = 0; | |
1655 | ||
1656 | manager_notify_cgroup_empty(m, buf); | |
1657 | bus_forward_agent_released(m, buf); | |
1658 | ||
1659 | return 0; | |
1660 | } | |
1661 | ||
8523bf7d | 1662 | static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, FDSet *fds) { |
5ba6985b LP |
1663 | _cleanup_strv_free_ char **tags = NULL; |
1664 | ||
1665 | assert(m); | |
1666 | assert(u); | |
1667 | assert(buf); | |
5ba6985b LP |
1668 | |
1669 | tags = strv_split(buf, "\n\r"); | |
1670 | if (!tags) { | |
1671 | log_oom(); | |
1672 | return; | |
1673 | } | |
1674 | ||
5ba6985b | 1675 | if (UNIT_VTABLE(u)->notify_message) |
a354329f | 1676 | UNIT_VTABLE(u)->notify_message(u, pid, tags, fds); |
a86b7675 ZJS |
1677 | else if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
1678 | _cleanup_free_ char *x = NULL, *y = NULL; | |
1679 | ||
1680 | x = cescape(buf); | |
1681 | if (x) | |
1682 | y = ellipsize(x, 20, 90); | |
1683 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); | |
1684 | } | |
5ba6985b LP |
1685 | } |
1686 | ||
718db961 | 1687 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 1688 | |
b215b0ed | 1689 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 1690 | Manager *m = userdata; |
b215b0ed DH |
1691 | char buf[NOTIFY_BUFFER_MAX+1]; |
1692 | struct iovec iovec = { | |
1693 | .iov_base = buf, | |
1694 | .iov_len = sizeof(buf)-1, | |
1695 | }; | |
1696 | union { | |
1697 | struct cmsghdr cmsghdr; | |
1698 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1699 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1700 | } control = {}; | |
1701 | struct msghdr msghdr = { | |
1702 | .msg_iov = &iovec, | |
1703 | .msg_iovlen = 1, | |
1704 | .msg_control = &control, | |
1705 | .msg_controllen = sizeof(control), | |
1706 | }; | |
1707 | ||
1708 | struct cmsghdr *cmsg; | |
1709 | struct ucred *ucred = NULL; | |
b215b0ed DH |
1710 | Unit *u1, *u2, *u3; |
1711 | int r, *fd_array = NULL; | |
1712 | unsigned n_fds = 0; | |
8c47c732 LP |
1713 | ssize_t n; |
1714 | ||
1715 | assert(m); | |
718db961 LP |
1716 | assert(m->notify_fd == fd); |
1717 | ||
1718 | if (revents != EPOLLIN) { | |
1719 | log_warning("Got unexpected poll event for notify fd."); | |
1720 | return 0; | |
1721 | } | |
8c47c732 | 1722 | |
b215b0ed DH |
1723 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); |
1724 | if (n < 0) { | |
9987750e FB |
1725 | if (!IN_SET(errno, EAGAIN, EINTR)) |
1726 | log_error("Failed to receive notification message: %m"); | |
8c47c732 | 1727 | |
9987750e FB |
1728 | /* It's not an option to return an error here since it |
1729 | * would disable the notification handler entirely. Services | |
1730 | * wouldn't be able to send the WATCHDOG message for | |
1731 | * example... */ | |
1732 | return 0; | |
b215b0ed | 1733 | } |
a354329f | 1734 | |
b215b0ed DH |
1735 | CMSG_FOREACH(cmsg, &msghdr) { |
1736 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 1737 | |
b215b0ed DH |
1738 | fd_array = (int*) CMSG_DATA(cmsg); |
1739 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 1740 | |
b215b0ed DH |
1741 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
1742 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1743 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 1744 | |
b215b0ed | 1745 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 1746 | } |
b215b0ed | 1747 | } |
a354329f | 1748 | |
b215b0ed DH |
1749 | if (n_fds > 0) { |
1750 | assert(fd_array); | |
a354329f | 1751 | |
b215b0ed DH |
1752 | r = fdset_new_array(&fds, fd_array, n_fds); |
1753 | if (r < 0) { | |
1754 | close_many(fd_array, n_fds); | |
9987750e FB |
1755 | log_oom(); |
1756 | return 0; | |
a354329f | 1757 | } |
b215b0ed | 1758 | } |
8c47c732 | 1759 | |
b215b0ed DH |
1760 | if (!ucred || ucred->pid <= 0) { |
1761 | log_warning("Received notify message without valid credentials. Ignoring."); | |
1762 | return 0; | |
1763 | } | |
8c47c732 | 1764 | |
b215b0ed DH |
1765 | if ((size_t) n >= sizeof(buf)) { |
1766 | log_warning("Received notify message exceeded maximum size. Ignoring."); | |
1767 | return 0; | |
1768 | } | |
8c47c732 | 1769 | |
8523bf7d ZJS |
1770 | /* The message should be a string. Here we make sure it's NUL-terminated, |
1771 | * but only the part until first NUL will be used anyway. */ | |
b215b0ed | 1772 | buf[n] = 0; |
8c47c732 | 1773 | |
b215b0ed DH |
1774 | /* Notify every unit that might be interested, but try |
1775 | * to avoid notifying the same one multiple times. */ | |
1776 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); | |
c4bee3c4 | 1777 | if (u1) |
8523bf7d | 1778 | manager_invoke_notify_message(m, u1, ucred->pid, buf, fds); |
5ba6985b | 1779 | |
b215b0ed | 1780 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1781 | if (u2 && u2 != u1) |
8523bf7d | 1782 | manager_invoke_notify_message(m, u2, ucred->pid, buf, fds); |
5ba6985b | 1783 | |
b215b0ed | 1784 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1785 | if (u3 && u3 != u2 && u3 != u1) |
8523bf7d | 1786 | manager_invoke_notify_message(m, u3, ucred->pid, buf, fds); |
8c47c732 | 1787 | |
c4bee3c4 | 1788 | if (!u1 && !u2 && !u3) |
b215b0ed | 1789 | log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); |
a354329f | 1790 | |
b215b0ed | 1791 | if (fdset_size(fds) > 0) |
5fd2c135 | 1792 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
1793 | |
1794 | return 0; | |
1795 | } | |
1796 | ||
96d66d89 | 1797 | static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) { |
36f20ae3 KW |
1798 | uint64_t iteration; |
1799 | ||
5ba6985b LP |
1800 | assert(m); |
1801 | assert(u); | |
1802 | assert(si); | |
1803 | ||
36f20ae3 KW |
1804 | sd_event_get_iteration(m->event, &iteration); |
1805 | ||
f2341e0a | 1806 | log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); |
5ba6985b LP |
1807 | |
1808 | unit_unwatch_pid(u, si->si_pid); | |
e57051f5 | 1809 | |
36f20ae3 | 1810 | if (UNIT_VTABLE(u)->sigchld_event) { |
ccc2c98e LN |
1811 | if (set_size(u->pids) <= 1 || |
1812 | iteration != u->sigchldgen || | |
1813 | unit_main_pid(u) == si->si_pid || | |
1814 | unit_control_pid(u) == si->si_pid) { | |
36f20ae3 KW |
1815 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); |
1816 | u->sigchldgen = iteration; | |
1817 | } else | |
1e706c8d | 1818 | log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids)); |
36f20ae3 | 1819 | } |
5ba6985b LP |
1820 | } |
1821 | ||
034c6ed7 | 1822 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1823 | assert(m); |
1824 | ||
1825 | for (;;) { | |
b92bea5d | 1826 | siginfo_t si = {}; |
9152c765 | 1827 | |
4112df16 LP |
1828 | /* First we call waitd() for a PID and do not reap the |
1829 | * zombie. That way we can still access /proc/$PID for | |
1830 | * it while it is a zombie. */ | |
1831 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1832 | |
1833 | if (errno == ECHILD) | |
1834 | break; | |
1835 | ||
4112df16 LP |
1836 | if (errno == EINTR) |
1837 | continue; | |
1838 | ||
9152c765 | 1839 | return -errno; |
acbb0225 | 1840 | } |
9152c765 | 1841 | |
4112df16 | 1842 | if (si.si_pid <= 0) |
9152c765 LP |
1843 | break; |
1844 | ||
15d5d9d9 | 1845 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
7fd1b19b | 1846 | _cleanup_free_ char *name = NULL; |
70af4d17 | 1847 | Unit *u1, *u2, *u3; |
4112df16 | 1848 | |
87d2c1ff | 1849 | get_process_comm(si.si_pid, &name); |
4112df16 | 1850 | |
5ba6985b LP |
1851 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", |
1852 | si.si_pid, strna(name), | |
1853 | sigchld_code_to_string(si.si_code), | |
1854 | si.si_status, | |
1855 | strna(si.si_code == CLD_EXITED | |
1856 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1857 | : signal_to_string(si.si_status))); | |
1858 | ||
1859 | /* And now figure out the unit this belongs | |
1860 | * to, it might be multiple... */ | |
b3ac818b | 1861 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
70af4d17 LP |
1862 | if (u1) |
1863 | invoke_sigchld_event(m, u1, &si); | |
fea72cc0 | 1864 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
1865 | if (u2 && u2 != u1) |
1866 | invoke_sigchld_event(m, u2, &si); | |
fea72cc0 | 1867 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
1868 | if (u3 && u3 != u2 && u3 != u1) |
1869 | invoke_sigchld_event(m, u3, &si); | |
5ba6985b | 1870 | } |
8c47c732 | 1871 | |
4112df16 LP |
1872 | /* And now, we actually reap the zombie. */ |
1873 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1874 | if (errno == EINTR) | |
1875 | continue; | |
1876 | ||
1877 | return -errno; | |
1878 | } | |
9152c765 LP |
1879 | } |
1880 | ||
1881 | return 0; | |
1882 | } | |
1883 | ||
7d793605 | 1884 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 1885 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 1886 | int r; |
398ef8ba | 1887 | |
f2341e0a | 1888 | log_debug("Activating special unit %s", name); |
1e001f52 | 1889 | |
4bd29fe5 | 1890 | r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL); |
bd0af849 | 1891 | if (r < 0) |
f2341e0a | 1892 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
a1b256b0 LP |
1893 | |
1894 | return r; | |
28247076 LP |
1895 | } |
1896 | ||
24dd31c1 LN |
1897 | static void manager_handle_ctrl_alt_del(Manager *m) { |
1898 | /* If the user presses C-A-D more than | |
1899 | * 7 times within 2s, we reboot/shutdown immediately, | |
1900 | * unless it was disabled in system.conf */ | |
1901 | ||
1902 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == CAD_BURST_ACTION_IGNORE) | |
1903 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); | |
1904 | else { | |
1905 | switch (m->cad_burst_action) { | |
1906 | ||
1907 | case CAD_BURST_ACTION_REBOOT: | |
1908 | m->exit_code = MANAGER_REBOOT; | |
1909 | break; | |
1910 | ||
1911 | case CAD_BURST_ACTION_POWEROFF: | |
1912 | m->exit_code = MANAGER_POWEROFF; | |
1913 | break; | |
1914 | ||
1915 | default: | |
1916 | assert_not_reached("Unknown action."); | |
1917 | } | |
1918 | ||
1919 | log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, performing immediate %s.", | |
1920 | cad_burst_action_to_string(m->cad_burst_action)); | |
1921 | status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, performing immediate %s.", | |
1922 | cad_burst_action_to_string(m->cad_burst_action)); | |
1923 | } | |
1924 | } | |
1925 | ||
718db961 LP |
1926 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1927 | Manager *m = userdata; | |
9152c765 LP |
1928 | ssize_t n; |
1929 | struct signalfd_siginfo sfsi; | |
1930 | bool sigchld = false; | |
dacd6cee | 1931 | int r; |
9152c765 LP |
1932 | |
1933 | assert(m); | |
718db961 LP |
1934 | assert(m->signal_fd == fd); |
1935 | ||
1936 | if (revents != EPOLLIN) { | |
1937 | log_warning("Got unexpected events from signal file descriptor."); | |
1938 | return 0; | |
1939 | } | |
9152c765 LP |
1940 | |
1941 | for (;;) { | |
718db961 | 1942 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
57cb4adf | 1943 | if (n != sizeof(sfsi)) { |
9152c765 LP |
1944 | |
1945 | if (n >= 0) | |
1946 | return -EIO; | |
1947 | ||
63090775 | 1948 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 1949 | break; |
9152c765 LP |
1950 | |
1951 | return -errno; | |
1952 | } | |
1953 | ||
4daf54a8 | 1954 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
463d0d15 | 1955 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) |
4daf54a8 ZJS |
1956 | ? LOG_DEBUG : LOG_INFO, |
1957 | &sfsi); | |
1e001f52 | 1958 | |
b9cd2ec1 LP |
1959 | switch (sfsi.ssi_signo) { |
1960 | ||
4112df16 | 1961 | case SIGCHLD: |
9152c765 | 1962 | sigchld = true; |
b9cd2ec1 LP |
1963 | break; |
1964 | ||
6632c602 | 1965 | case SIGTERM: |
463d0d15 | 1966 | if (MANAGER_IS_SYSTEM(m)) { |
db06e3b6 LP |
1967 | /* This is for compatibility with the |
1968 | * original sysvinit */ | |
e11dc4a2 | 1969 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1970 | break; |
1971 | } | |
84e9af1e | 1972 | |
a1b256b0 | 1973 | /* Fall through */ |
e11dc4a2 LP |
1974 | |
1975 | case SIGINT: | |
463d0d15 | 1976 | if (MANAGER_IS_SYSTEM(m)) { |
24dd31c1 | 1977 | manager_handle_ctrl_alt_del(m); |
84e9af1e LP |
1978 | break; |
1979 | } | |
1980 | ||
a1b256b0 | 1981 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 1982 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
1983 | m->exit_code = MANAGER_EXIT; |
1984 | return 0; | |
1985 | } | |
1986 | ||
1987 | break; | |
84e9af1e | 1988 | |
28247076 | 1989 | case SIGWINCH: |
463d0d15 | 1990 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 1991 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 1992 | |
28247076 LP |
1993 | /* This is a nop on non-init */ |
1994 | break; | |
84e9af1e | 1995 | |
28247076 | 1996 | case SIGPWR: |
463d0d15 | 1997 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 1998 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 1999 | |
28247076 | 2000 | /* This is a nop on non-init */ |
84e9af1e | 2001 | break; |
6632c602 | 2002 | |
1005d14f | 2003 | case SIGUSR1: { |
57ee42ce LP |
2004 | Unit *u; |
2005 | ||
2006 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2007 | ||
2008 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2009 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2010 | bus_init(m, true); |
57ee42ce LP |
2011 | } |
2012 | ||
2013 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2014 | log_info("Loading D-Bus service..."); | |
7d793605 | 2015 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2016 | } |
2017 | ||
2018 | break; | |
2019 | } | |
2020 | ||
2149e37c | 2021 | case SIGUSR2: { |
718db961 LP |
2022 | _cleanup_free_ char *dump = NULL; |
2023 | _cleanup_fclose_ FILE *f = NULL; | |
2149e37c LP |
2024 | size_t size; |
2025 | ||
718db961 LP |
2026 | f = open_memstream(&dump, &size); |
2027 | if (!f) { | |
dacd6cee | 2028 | log_warning_errno(errno, "Failed to allocate memory stream: %m"); |
2149e37c LP |
2029 | break; |
2030 | } | |
2031 | ||
2032 | manager_dump_units(m, f, "\t"); | |
2033 | manager_dump_jobs(m, f, "\t"); | |
2034 | ||
dacd6cee LP |
2035 | r = fflush_and_check(f); |
2036 | if (r < 0) { | |
2037 | log_warning_errno(r, "Failed to write status stream: %m"); | |
b2cdc666 DM |
2038 | break; |
2039 | } | |
2040 | ||
2149e37c | 2041 | log_dump(LOG_INFO, dump); |
1005d14f | 2042 | break; |
2149e37c | 2043 | } |
1005d14f | 2044 | |
a16e1123 LP |
2045 | case SIGHUP: |
2046 | m->exit_code = MANAGER_RELOAD; | |
2047 | break; | |
2048 | ||
7d793605 | 2049 | default: { |
253ee27a | 2050 | |
0003d1ab LP |
2051 | /* Starting SIGRTMIN+0 */ |
2052 | static const char * const target_table[] = { | |
7d793605 LP |
2053 | [0] = SPECIAL_DEFAULT_TARGET, |
2054 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 2055 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
2056 | [3] = SPECIAL_HALT_TARGET, |
2057 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
2058 | [5] = SPECIAL_REBOOT_TARGET, |
2059 | [6] = SPECIAL_KEXEC_TARGET | |
2060 | }; | |
2061 | ||
2062 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2063 | static const ManagerExitCode code_table[] = { | |
2064 | [0] = MANAGER_HALT, | |
2065 | [1] = MANAGER_POWEROFF, | |
2066 | [2] = MANAGER_REBOOT, | |
2067 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2068 | }; |
2069 | ||
2070 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 2071 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
2072 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
2073 | manager_start_target(m, target_table[idx], | |
2074 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
2075 | break; |
2076 | } | |
2077 | ||
0003d1ab LP |
2078 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2079 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2080 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2081 | break; | |
2082 | } | |
2083 | ||
0658666b LP |
2084 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2085 | ||
2086 | case 20: | |
d450b6f2 | 2087 | manager_set_show_status(m, SHOW_STATUS_YES); |
0658666b LP |
2088 | break; |
2089 | ||
2090 | case 21: | |
d450b6f2 | 2091 | manager_set_show_status(m, SHOW_STATUS_NO); |
0658666b LP |
2092 | break; |
2093 | ||
253ee27a LP |
2094 | case 22: |
2095 | log_set_max_level(LOG_DEBUG); | |
4cee3a78 | 2096 | log_info("Setting log level to debug."); |
253ee27a LP |
2097 | break; |
2098 | ||
2099 | case 23: | |
2100 | log_set_max_level(LOG_INFO); | |
4cee3a78 | 2101 | log_info("Setting log level to info."); |
253ee27a LP |
2102 | break; |
2103 | ||
600b704e | 2104 | case 24: |
463d0d15 | 2105 | if (MANAGER_IS_USER(m)) { |
600b704e LP |
2106 | m->exit_code = MANAGER_EXIT; |
2107 | return 0; | |
2108 | } | |
2109 | ||
2110 | /* This is a nop on init */ | |
2111 | break; | |
2112 | ||
4cfa2c99 | 2113 | case 26: |
c1dc6153 | 2114 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ |
4cfa2c99 LP |
2115 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); |
2116 | log_notice("Setting log target to journal-or-kmsg."); | |
2117 | break; | |
2118 | ||
253ee27a LP |
2119 | case 27: |
2120 | log_set_target(LOG_TARGET_CONSOLE); | |
2121 | log_notice("Setting log target to console."); | |
2122 | break; | |
2123 | ||
2124 | case 28: | |
2125 | log_set_target(LOG_TARGET_KMSG); | |
2126 | log_notice("Setting log target to kmsg."); | |
2127 | break; | |
2128 | ||
0658666b | 2129 | default: |
4e240ab0 | 2130 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 2131 | } |
b9cd2ec1 | 2132 | } |
7d793605 | 2133 | } |
9152c765 LP |
2134 | } |
2135 | ||
2136 | if (sigchld) | |
7b77ed8c | 2137 | manager_dispatch_sigchld(m); |
034c6ed7 LP |
2138 | |
2139 | return 0; | |
2140 | } | |
2141 | ||
718db961 LP |
2142 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2143 | Manager *m = userdata; | |
2144 | Iterator i; | |
2145 | Unit *u; | |
034c6ed7 LP |
2146 | |
2147 | assert(m); | |
718db961 | 2148 | assert(m->time_change_fd == fd); |
034c6ed7 | 2149 | |
718db961 | 2150 | log_struct(LOG_INFO, |
e2cc6eca LP |
2151 | LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), |
2152 | LOG_MESSAGE("Time has been changed"), | |
718db961 | 2153 | NULL); |
034c6ed7 | 2154 | |
718db961 LP |
2155 | /* Restart the watch */ |
2156 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
03e334a1 | 2157 | m->time_change_fd = safe_close(m->time_change_fd); |
ef734fd6 | 2158 | |
718db961 | 2159 | manager_setup_time_change(m); |
4e434314 | 2160 | |
718db961 LP |
2161 | HASHMAP_FOREACH(u, m->units, i) |
2162 | if (UNIT_VTABLE(u)->time_change) | |
2163 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2164 | |
718db961 LP |
2165 | return 0; |
2166 | } | |
ea430986 | 2167 | |
718db961 LP |
2168 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2169 | Manager *m = userdata; | |
8742514c | 2170 | |
718db961 LP |
2171 | assert(m); |
2172 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2173 | |
718db961 | 2174 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2175 | |
718db961 | 2176 | manager_close_idle_pipe(m); |
03b717a3 | 2177 | |
718db961 LP |
2178 | return 0; |
2179 | } | |
31a7eb86 | 2180 | |
718db961 LP |
2181 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2182 | Manager *m = userdata; | |
fd08a840 ZJS |
2183 | int r; |
2184 | uint64_t next; | |
31a7eb86 | 2185 | |
718db961 | 2186 | assert(m); |
fd08a840 | 2187 | assert(source); |
9152c765 | 2188 | |
718db961 | 2189 | manager_print_jobs_in_progress(m); |
fd08a840 ZJS |
2190 | |
2191 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
2192 | r = sd_event_source_set_time(source, next); | |
2193 | if (r < 0) | |
2194 | return r; | |
2195 | ||
2196 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2197 | } |
2198 | ||
2199 | int manager_loop(Manager *m) { | |
2200 | int r; | |
9152c765 | 2201 | |
fac9f8df | 2202 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2203 | |
9152c765 | 2204 | assert(m); |
f755e3b7 | 2205 | m->exit_code = MANAGER_OK; |
9152c765 | 2206 | |
fe51822e | 2207 | /* Release the path cache */ |
97044145 | 2208 | m->unit_path_cache = set_free_free(m->unit_path_cache); |
fe51822e | 2209 | |
b0c918b9 LP |
2210 | manager_check_finished(m); |
2211 | ||
a4312405 | 2212 | /* There might still be some zombies hanging around from |
f3669545 | 2213 | * before we were exec()'ed. Let's reap them. */ |
e96d6be7 LP |
2214 | r = manager_dispatch_sigchld(m); |
2215 | if (r < 0) | |
a4312405 LP |
2216 | return r; |
2217 | ||
f755e3b7 | 2218 | while (m->exit_code == MANAGER_OK) { |
718db961 | 2219 | usec_t wait_usec; |
9152c765 | 2220 | |
463d0d15 | 2221 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) |
e96d6be7 LP |
2222 | watchdog_ping(); |
2223 | ||
ea430986 LP |
2224 | if (!ratelimit_test(&rl)) { |
2225 | /* Yay, something is going seriously wrong, pause a little */ | |
2226 | log_warning("Looping too fast. Throttling execution a little."); | |
2227 | sleep(1); | |
2228 | } | |
2229 | ||
37a8e683 | 2230 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2231 | continue; |
2232 | ||
cf1265e1 | 2233 | if (manager_dispatch_gc_queue(m) > 0) |
701cc384 LP |
2234 | continue; |
2235 | ||
cf1265e1 | 2236 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2237 | continue; |
034c6ed7 | 2238 | |
cf1265e1 | 2239 | if (manager_dispatch_cgroup_queue(m) > 0) |
c1e1601e LP |
2240 | continue; |
2241 | ||
c1e1601e | 2242 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2243 | continue; |
ea430986 | 2244 | |
c757a65b | 2245 | /* Sleep for half the watchdog time */ |
463d0d15 | 2246 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { |
718db961 LP |
2247 | wait_usec = m->runtime_watchdog / 2; |
2248 | if (wait_usec <= 0) | |
2249 | wait_usec = 1; | |
c757a65b | 2250 | } else |
3a43da28 | 2251 | wait_usec = USEC_INFINITY; |
9152c765 | 2252 | |
718db961 | 2253 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2254 | if (r < 0) |
2255 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2256 | } |
957ca890 | 2257 | |
a16e1123 | 2258 | return m->exit_code; |
83c60c9f | 2259 | } |
ea430986 | 2260 | |
718db961 | 2261 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2262 | _cleanup_free_ char *n = NULL; |
ea430986 | 2263 | Unit *u; |
80fbf05e | 2264 | int r; |
ea430986 LP |
2265 | |
2266 | assert(m); | |
2267 | assert(s); | |
2268 | assert(_u); | |
2269 | ||
ede3a796 LP |
2270 | r = unit_name_from_dbus_path(s, &n); |
2271 | if (r < 0) | |
2272 | return r; | |
ea430986 | 2273 | |
80fbf05e | 2274 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
2275 | if (r < 0) |
2276 | return r; | |
ea430986 LP |
2277 | |
2278 | *_u = u; | |
2279 | ||
2280 | return 0; | |
2281 | } | |
86fbf370 LP |
2282 | |
2283 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 2284 | const char *p; |
86fbf370 | 2285 | unsigned id; |
718db961 | 2286 | Job *j; |
86fbf370 LP |
2287 | int r; |
2288 | ||
2289 | assert(m); | |
2290 | assert(s); | |
2291 | assert(_j); | |
2292 | ||
718db961 LP |
2293 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
2294 | if (!p) | |
86fbf370 LP |
2295 | return -EINVAL; |
2296 | ||
718db961 | 2297 | r = safe_atou(p, &id); |
8742514c | 2298 | if (r < 0) |
86fbf370 LP |
2299 | return r; |
2300 | ||
8742514c LP |
2301 | j = manager_get_job(m, id); |
2302 | if (!j) | |
86fbf370 LP |
2303 | return -ENOENT; |
2304 | ||
2305 | *_j = j; | |
2306 | ||
2307 | return 0; | |
2308 | } | |
dfcd764e | 2309 | |
4927fcae | 2310 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2311 | |
4927fcae | 2312 | #ifdef HAVE_AUDIT |
2ba11090 | 2313 | _cleanup_free_ char *p = NULL; |
0aa281df | 2314 | const char *msg; |
7410616c | 2315 | int audit_fd, r; |
e537352b | 2316 | |
463d0d15 | 2317 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
2318 | return; |
2319 | ||
c1165f82 LP |
2320 | audit_fd = get_audit_fd(); |
2321 | if (audit_fd < 0) | |
e537352b LP |
2322 | return; |
2323 | ||
bbd3a7ba LP |
2324 | /* Don't generate audit events if the service was already |
2325 | * started and we're just deserializing */ | |
2c289ea8 | 2326 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
2327 | return; |
2328 | ||
ac155bb8 | 2329 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
2330 | return; |
2331 | ||
7410616c LP |
2332 | r = unit_name_to_prefix_and_instance(u->id, &p); |
2333 | if (r < 0) { | |
2334 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
2335 | return; |
2336 | } | |
2337 | ||
63c372cb | 2338 | msg = strjoina("unit=", p); |
0aa281df LP |
2339 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
2340 | if (errno == EPERM) | |
391ade86 | 2341 | /* We aren't allowed to send audit messages? |
44785992 | 2342 | * Then let's not retry again. */ |
c1165f82 | 2343 | close_audit_fd(); |
0aa281df | 2344 | else |
56f64d95 | 2345 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 2346 | } |
4927fcae | 2347 | #endif |
e537352b | 2348 | |
e537352b LP |
2349 | } |
2350 | ||
e983b760 | 2351 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 2352 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
2353 | _cleanup_free_ char *message = NULL; |
2354 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 2355 | int n = 0; |
e983b760 LP |
2356 | |
2357 | /* Don't generate plymouth events if the service was already | |
2358 | * started and we're just deserializing */ | |
2c289ea8 | 2359 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
2360 | return; |
2361 | ||
463d0d15 | 2362 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
2363 | return; |
2364 | ||
75f86906 | 2365 | if (detect_container() > 0) |
3772995a LP |
2366 | return; |
2367 | ||
ac155bb8 MS |
2368 | if (u->type != UNIT_SERVICE && |
2369 | u->type != UNIT_MOUNT && | |
2370 | u->type != UNIT_SWAP) | |
e983b760 LP |
2371 | return; |
2372 | ||
2373 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2374 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
2375 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
2376 | if (fd < 0) { | |
56f64d95 | 2377 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
2378 | return; |
2379 | } | |
2380 | ||
fc2fffe7 | 2381 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
e983b760 | 2382 | |
2ba11090 | 2383 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) |
56f64d95 | 2384 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 2385 | return; |
e983b760 LP |
2386 | } |
2387 | ||
ac155bb8 | 2388 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 2389 | log_oom(); |
2ba11090 | 2390 | return; |
e983b760 LP |
2391 | } |
2392 | ||
2393 | errno = 0; | |
2ba11090 ZJS |
2394 | if (write(fd, message, n + 1) != n + 1) |
2395 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
56f64d95 | 2396 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
2397 | } |
2398 | ||
d8d5ab98 | 2399 | int manager_open_serialization(Manager *m, FILE **_f) { |
8e33886e | 2400 | const char *path; |
df28bc08 | 2401 | int fd = -1; |
a16e1123 LP |
2402 | FILE *f; |
2403 | ||
2404 | assert(_f); | |
2405 | ||
463d0d15 | 2406 | path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp"; |
03532f0a | 2407 | fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC); |
d86f9d52 | 2408 | if (fd < 0) |
a16e1123 | 2409 | return -errno; |
a16e1123 | 2410 | |
a16e1123 | 2411 | log_debug("Serializing state to %s", path); |
a16e1123 | 2412 | |
01e10de3 | 2413 | f = fdopen(fd, "w+"); |
d86f9d52 | 2414 | if (!f) { |
03e334a1 | 2415 | safe_close(fd); |
a16e1123 | 2416 | return -errno; |
d86f9d52 | 2417 | } |
a16e1123 LP |
2418 | |
2419 | *_f = f; | |
2420 | ||
2421 | return 0; | |
2422 | } | |
2423 | ||
b3680f49 | 2424 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { |
a16e1123 LP |
2425 | Iterator i; |
2426 | Unit *u; | |
2427 | const char *t; | |
4a9fd066 | 2428 | char **e; |
a16e1123 LP |
2429 | int r; |
2430 | ||
2431 | assert(m); | |
2432 | assert(f); | |
2433 | assert(fds); | |
2434 | ||
313cefa1 | 2435 | m->n_reloading++; |
38c52d46 | 2436 | |
1fa2f38f | 2437 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); |
01d67b43 | 2438 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); |
33c5fae9 LP |
2439 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
2440 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 2441 | |
915b3753 | 2442 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
915b3753 | 2443 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); |
718db961 | 2444 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); |
e9ddabc2 | 2445 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 2446 | |
26a1efdf | 2447 | if (!in_initrd()) { |
915b3753 | 2448 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 | 2449 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
718db961 LP |
2450 | dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp); |
2451 | dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp); | |
2452 | dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp); | |
2453 | dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp); | |
2454 | dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp); | |
2455 | dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp); | |
f38ed060 | 2456 | } |
47a483a1 | 2457 | |
b3680f49 HH |
2458 | if (!switching_root) { |
2459 | STRV_FOREACH(e, m->environment) { | |
2460 | _cleanup_free_ char *ce; | |
4a9fd066 | 2461 | |
b3680f49 | 2462 | ce = cescape(*e); |
e3dd987c LP |
2463 | if (!ce) |
2464 | return -ENOMEM; | |
2465 | ||
2466 | fprintf(f, "env=%s\n", *e); | |
b3680f49 | 2467 | } |
4a9fd066 OS |
2468 | } |
2469 | ||
d86f9d52 LP |
2470 | if (m->notify_fd >= 0) { |
2471 | int copy; | |
2472 | ||
2473 | copy = fdset_put_dup(fds, m->notify_fd); | |
2474 | if (copy < 0) | |
2475 | return copy; | |
2476 | ||
2477 | fprintf(f, "notify-fd=%i\n", copy); | |
2478 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2479 | } | |
2480 | ||
d8fdc620 LP |
2481 | if (m->cgroups_agent_fd >= 0) { |
2482 | int copy; | |
2483 | ||
2484 | copy = fdset_put_dup(fds, m->cgroups_agent_fd); | |
2485 | if (copy < 0) | |
2486 | return copy; | |
2487 | ||
2488 | fprintf(f, "cgroups-agent-fd=%i\n", copy); | |
2489 | } | |
2490 | ||
00d9ef85 LP |
2491 | if (m->user_lookup_fds[0] >= 0) { |
2492 | int copy0, copy1; | |
2493 | ||
2494 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
2495 | if (copy0 < 0) | |
2496 | return copy0; | |
2497 | ||
2498 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
2499 | if (copy1 < 0) | |
2500 | return copy1; | |
2501 | ||
2502 | fprintf(f, "user-lookup=%i %i\n", copy0, copy1); | |
2503 | } | |
2504 | ||
05a98afd | 2505 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 2506 | |
29206d46 LP |
2507 | r = dynamic_user_serialize(m, f, fds); |
2508 | if (r < 0) | |
2509 | return r; | |
2510 | ||
00d9ef85 LP |
2511 | manager_serialize_uid_refs(m, f); |
2512 | manager_serialize_gid_refs(m, f); | |
2513 | ||
f2382a94 LP |
2514 | fputc('\n', f); |
2515 | ||
a16e1123 | 2516 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 2517 | if (u->id != t) |
a16e1123 LP |
2518 | continue; |
2519 | ||
a16e1123 | 2520 | /* Start marker */ |
ac155bb8 | 2521 | fputs(u->id, f); |
a16e1123 LP |
2522 | fputc('\n', f); |
2523 | ||
6fa48533 LP |
2524 | r = unit_serialize(u, f, fds, !switching_root); |
2525 | if (r < 0) { | |
313cefa1 | 2526 | m->n_reloading--; |
a16e1123 | 2527 | return r; |
38c52d46 | 2528 | } |
a16e1123 LP |
2529 | } |
2530 | ||
a7556052 | 2531 | assert(m->n_reloading > 0); |
313cefa1 | 2532 | m->n_reloading--; |
38c52d46 | 2533 | |
a16e1123 LP |
2534 | if (ferror(f)) |
2535 | return -EIO; | |
2536 | ||
b23de6af LP |
2537 | r = bus_fdset_add_all(m, fds); |
2538 | if (r < 0) | |
2539 | return r; | |
2540 | ||
a16e1123 LP |
2541 | return 0; |
2542 | } | |
2543 | ||
2544 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2545 | int r = 0; | |
2546 | ||
2547 | assert(m); | |
2548 | assert(f); | |
2549 | ||
2550 | log_debug("Deserializing state..."); | |
2551 | ||
313cefa1 | 2552 | m->n_reloading++; |
82c64bf5 | 2553 | |
10f8e83c | 2554 | for (;;) { |
20c03b7b | 2555 | char line[LINE_MAX], *l; |
10f8e83c LP |
2556 | |
2557 | if (!fgets(line, sizeof(line), f)) { | |
2558 | if (feof(f)) | |
2559 | r = 0; | |
2560 | else | |
2561 | r = -errno; | |
2562 | ||
2563 | goto finish; | |
2564 | } | |
2565 | ||
2566 | char_array_0(line); | |
2567 | l = strstrip(line); | |
2568 | ||
2569 | if (l[0] == 0) | |
2570 | break; | |
2571 | ||
01d67b43 LP |
2572 | if (startswith(l, "current-job-id=")) { |
2573 | uint32_t id; | |
2574 | ||
2575 | if (safe_atou32(l+15, &id) < 0) | |
e5035a27 | 2576 | log_debug("Failed to parse current job id value %s", l+15); |
01d67b43 LP |
2577 | else |
2578 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 2579 | |
33c5fae9 LP |
2580 | } else if (startswith(l, "n-installed-jobs=")) { |
2581 | uint32_t n; | |
2582 | ||
2583 | if (safe_atou32(l+17, &n) < 0) | |
e5035a27 | 2584 | log_debug("Failed to parse installed jobs counter %s", l+17); |
33c5fae9 LP |
2585 | else |
2586 | m->n_installed_jobs += n; | |
718db961 | 2587 | |
33c5fae9 LP |
2588 | } else if (startswith(l, "n-failed-jobs=")) { |
2589 | uint32_t n; | |
2590 | ||
2591 | if (safe_atou32(l+14, &n) < 0) | |
e5035a27 | 2592 | log_debug("Failed to parse failed jobs counter %s", l+14); |
33c5fae9 LP |
2593 | else |
2594 | m->n_failed_jobs += n; | |
718db961 | 2595 | |
01d67b43 LP |
2596 | } else if (startswith(l, "taint-usr=")) { |
2597 | int b; | |
2598 | ||
e3dd987c LP |
2599 | b = parse_boolean(l+10); |
2600 | if (b < 0) | |
e5035a27 | 2601 | log_debug("Failed to parse taint /usr flag %s", l+10); |
01d67b43 LP |
2602 | else |
2603 | m->taint_usr = m->taint_usr || b; | |
718db961 | 2604 | |
915b3753 LP |
2605 | } else if (startswith(l, "firmware-timestamp=")) |
2606 | dual_timestamp_deserialize(l+19, &m->firmware_timestamp); | |
2607 | else if (startswith(l, "loader-timestamp=")) | |
2608 | dual_timestamp_deserialize(l+17, &m->loader_timestamp); | |
2609 | else if (startswith(l, "kernel-timestamp=")) | |
2610 | dual_timestamp_deserialize(l+17, &m->kernel_timestamp); | |
2611 | else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 | 2612 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
915b3753 LP |
2613 | else if (startswith(l, "userspace-timestamp=")) |
2614 | dual_timestamp_deserialize(l+20, &m->userspace_timestamp); | |
10717a1a | 2615 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 2616 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
718db961 LP |
2617 | else if (startswith(l, "security-start-timestamp=")) |
2618 | dual_timestamp_deserialize(l+25, &m->security_start_timestamp); | |
2619 | else if (startswith(l, "security-finish-timestamp=")) | |
2620 | dual_timestamp_deserialize(l+26, &m->security_finish_timestamp); | |
2621 | else if (startswith(l, "generators-start-timestamp=")) | |
2622 | dual_timestamp_deserialize(l+27, &m->generators_start_timestamp); | |
2623 | else if (startswith(l, "generators-finish-timestamp=")) | |
2624 | dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp); | |
2625 | else if (startswith(l, "units-load-start-timestamp=")) | |
2626 | dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp); | |
2627 | else if (startswith(l, "units-load-finish-timestamp=")) | |
2628 | dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp); | |
4a9fd066 OS |
2629 | else if (startswith(l, "env=")) { |
2630 | _cleanup_free_ char *uce = NULL; | |
2631 | char **e; | |
2632 | ||
527b7a42 LP |
2633 | r = cunescape(l + 4, UNESCAPE_RELAX, &uce); |
2634 | if (r < 0) | |
4a9fd066 | 2635 | goto finish; |
4a9fd066 OS |
2636 | |
2637 | e = strv_env_set(m->environment, uce); | |
2638 | if (!e) { | |
2639 | r = -ENOMEM; | |
2640 | goto finish; | |
2641 | } | |
2642 | ||
2643 | strv_free(m->environment); | |
2644 | m->environment = e; | |
e3dd987c | 2645 | |
d86f9d52 LP |
2646 | } else if (startswith(l, "notify-fd=")) { |
2647 | int fd; | |
2648 | ||
2649 | if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
e5035a27 | 2650 | log_debug("Failed to parse notify fd: %s", l + 10); |
d86f9d52 | 2651 | else { |
03e334a1 LP |
2652 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
2653 | safe_close(m->notify_fd); | |
d86f9d52 LP |
2654 | m->notify_fd = fdset_remove(fds, fd); |
2655 | } | |
2656 | ||
2657 | } else if (startswith(l, "notify-socket=")) { | |
2658 | char *n; | |
2659 | ||
2660 | n = strdup(l+14); | |
2661 | if (!n) { | |
2662 | r = -ENOMEM; | |
2663 | goto finish; | |
2664 | } | |
2665 | ||
2666 | free(m->notify_socket); | |
2667 | m->notify_socket = n; | |
2668 | ||
d8fdc620 LP |
2669 | } else if (startswith(l, "cgroups-agent-fd=")) { |
2670 | int fd; | |
2671 | ||
2672 | if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2673 | log_debug("Failed to parse cgroups agent fd: %s", l + 10); | |
2674 | else { | |
2675 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
2676 | safe_close(m->cgroups_agent_fd); | |
2677 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
2678 | } | |
2679 | ||
00d9ef85 LP |
2680 | } else if (startswith(l, "user-lookup=")) { |
2681 | int fd0, fd1; | |
2682 | ||
2683 | if (sscanf(l + 12, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) | |
2684 | log_debug("Failed to parse user lookup fd: %s", l + 12); | |
2685 | else { | |
2686 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
2687 | safe_close_pair(m->user_lookup_fds); | |
2688 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
2689 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
2690 | } | |
2691 | ||
29206d46 LP |
2692 | } else if (startswith(l, "dynamic-user=")) |
2693 | dynamic_user_deserialize_one(m, l + 13, fds); | |
00d9ef85 LP |
2694 | else if (startswith(l, "destroy-ipc-uid=")) |
2695 | manager_deserialize_uid_refs_one(m, l + 16); | |
2696 | else if (startswith(l, "destroy-ipc-gid=")) | |
2697 | manager_deserialize_gid_refs_one(m, l + 16); | |
05a98afd LP |
2698 | else if (startswith(l, "subscribed=")) { |
2699 | ||
2700 | if (strv_extend(&m->deserialized_subscribed, l+11) < 0) | |
2701 | log_oom(); | |
2702 | ||
232f6754 | 2703 | } else if (!startswith(l, "kdbus-fd=")) /* ignore this one */ |
05a98afd | 2704 | log_debug("Unknown serialization item '%s'", l); |
10f8e83c LP |
2705 | } |
2706 | ||
a16e1123 LP |
2707 | for (;;) { |
2708 | Unit *u; | |
2709 | char name[UNIT_NAME_MAX+2]; | |
2710 | ||
2711 | /* Start marker */ | |
2712 | if (!fgets(name, sizeof(name), f)) { | |
2713 | if (feof(f)) | |
10f8e83c LP |
2714 | r = 0; |
2715 | else | |
2716 | r = -errno; | |
a16e1123 | 2717 | |
82c64bf5 | 2718 | goto finish; |
a16e1123 LP |
2719 | } |
2720 | ||
2721 | char_array_0(name); | |
2722 | ||
bd0af849 ZJS |
2723 | r = manager_load_unit(m, strstrip(name), NULL, NULL, &u); |
2724 | if (r < 0) | |
82c64bf5 | 2725 | goto finish; |
a16e1123 | 2726 | |
01e10de3 LP |
2727 | r = unit_deserialize(u, f, fds); |
2728 | if (r < 0) | |
82c64bf5 | 2729 | goto finish; |
a16e1123 LP |
2730 | } |
2731 | ||
10f8e83c | 2732 | finish: |
145b1f79 | 2733 | if (ferror(f)) |
82c64bf5 | 2734 | r = -EIO; |
a16e1123 | 2735 | |
a7556052 | 2736 | assert(m->n_reloading > 0); |
313cefa1 | 2737 | m->n_reloading--; |
82c64bf5 LP |
2738 | |
2739 | return r; | |
a16e1123 LP |
2740 | } |
2741 | ||
2742 | int manager_reload(Manager *m) { | |
2743 | int r, q; | |
51d122af ZJS |
2744 | _cleanup_fclose_ FILE *f = NULL; |
2745 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
a16e1123 LP |
2746 | |
2747 | assert(m); | |
2748 | ||
07719a21 LP |
2749 | r = manager_open_serialization(m, &f); |
2750 | if (r < 0) | |
a16e1123 LP |
2751 | return r; |
2752 | ||
313cefa1 | 2753 | m->n_reloading++; |
718db961 | 2754 | bus_manager_send_reloading(m, true); |
38c52d46 | 2755 | |
07719a21 LP |
2756 | fds = fdset_new(); |
2757 | if (!fds) { | |
313cefa1 | 2758 | m->n_reloading--; |
51d122af | 2759 | return -ENOMEM; |
a16e1123 LP |
2760 | } |
2761 | ||
b3680f49 | 2762 | r = manager_serialize(m, f, fds, false); |
07719a21 | 2763 | if (r < 0) { |
313cefa1 | 2764 | m->n_reloading--; |
51d122af | 2765 | return r; |
38c52d46 | 2766 | } |
a16e1123 LP |
2767 | |
2768 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
313cefa1 | 2769 | m->n_reloading--; |
51d122af | 2770 | return -errno; |
a16e1123 LP |
2771 | } |
2772 | ||
2773 | /* From here on there is no way back. */ | |
2774 | manager_clear_jobs_and_units(m); | |
07a78643 | 2775 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 2776 | lookup_paths_free(&m->lookup_paths); |
29206d46 | 2777 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
2778 | m->uid_refs = hashmap_free(m->uid_refs); |
2779 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 2780 | |
4943d143 | 2781 | q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
2782 | if (q < 0 && r >= 0) |
2783 | r = q; | |
5a1e9937 | 2784 | |
a3c4eb07 LP |
2785 | /* Find new unit paths */ |
2786 | q = manager_run_generators(m); | |
e801700e | 2787 | if (q < 0 && r >= 0) |
07719a21 LP |
2788 | r = q; |
2789 | ||
a1453343 | 2790 | lookup_paths_reduce(&m->lookup_paths); |
5a1e9937 LP |
2791 | manager_build_unit_path_cache(m); |
2792 | ||
a16e1123 | 2793 | /* First, enumerate what we can from all config files */ |
ba64af90 | 2794 | manager_enumerate(m); |
a16e1123 LP |
2795 | |
2796 | /* Second, deserialize our stored data */ | |
07719a21 | 2797 | q = manager_deserialize(m, f, fds); |
e801700e | 2798 | if (q < 0 && r >= 0) |
a16e1123 LP |
2799 | r = q; |
2800 | ||
2801 | fclose(f); | |
2802 | f = NULL; | |
2803 | ||
a2cc4a6c ZJS |
2804 | /* Re-register notify_fd as event source */ |
2805 | q = manager_setup_notify(m); | |
e801700e | 2806 | if (q < 0 && r >= 0) |
a2cc4a6c ZJS |
2807 | r = q; |
2808 | ||
d8fdc620 LP |
2809 | q = manager_setup_cgroups_agent(m); |
2810 | if (q < 0 && r >= 0) | |
2811 | r = q; | |
2812 | ||
00d9ef85 LP |
2813 | q = manager_setup_user_lookup_fd(m); |
2814 | if (q < 0 && r >= 0) | |
2815 | r = q; | |
2816 | ||
a16e1123 | 2817 | /* Third, fire things up! */ |
007c6337 | 2818 | manager_coldplug(m); |
a16e1123 | 2819 | |
29206d46 LP |
2820 | /* Release any dynamic users no longer referenced */ |
2821 | dynamic_user_vacuum(m, true); | |
2822 | ||
00d9ef85 LP |
2823 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
2824 | manager_vacuum_uid_refs(m); | |
2825 | manager_vacuum_gid_refs(m); | |
2826 | ||
8936a5e3 DM |
2827 | /* Sync current state of bus names with our set of listening units */ |
2828 | if (m->api_bus) | |
2829 | manager_sync_bus_names(m, m->api_bus); | |
2830 | ||
a7556052 LP |
2831 | assert(m->n_reloading > 0); |
2832 | m->n_reloading--; | |
9f611ad8 | 2833 | |
71445ae7 LP |
2834 | m->send_reloading_done = true; |
2835 | ||
a16e1123 LP |
2836 | return r; |
2837 | } | |
2838 | ||
fdf20a31 | 2839 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2840 | Unit *u; |
2841 | Iterator i; | |
2842 | ||
2843 | assert(m); | |
2844 | ||
2845 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2846 | unit_reset_failed(u); |
5632e374 LP |
2847 | } |
2848 | ||
31afa0a4 | 2849 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
2850 | Unit *u; |
2851 | ||
2852 | assert(m); | |
2853 | assert(name); | |
2854 | ||
2855 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
2856 | u = manager_get_unit(m, name); |
2857 | if (!u) | |
8f6df3fa LP |
2858 | return true; |
2859 | ||
31afa0a4 | 2860 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
2861 | } |
2862 | ||
56dacdbc | 2863 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 2864 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 2865 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 2866 | |
56dacdbc | 2867 | if (m->test_run) |
b0c918b9 LP |
2868 | return; |
2869 | ||
463d0d15 | 2870 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
e03ae661 | 2871 | |
915b3753 LP |
2872 | /* Note that m->kernel_usec.monotonic is always at 0, |
2873 | * and m->firmware_usec.monotonic and | |
2874 | * m->loader_usec.monotonic should be considered | |
2875 | * negative values. */ | |
2876 | ||
7ceba241 LP |
2877 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
2878 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 2879 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 2880 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 2881 | |
e9ddabc2 | 2882 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 2883 | |
915b3753 LP |
2884 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
2885 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 2886 | |
e12919e8 | 2887 | log_struct(LOG_INFO, |
e2cc6eca | 2888 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 LP |
2889 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
2890 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
2891 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
e2cc6eca LP |
2892 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
2893 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2894 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
2895 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2896 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 2897 | NULL); |
18fa6b27 | 2898 | } else { |
915b3753 | 2899 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
2900 | initrd_usec = 0; |
2901 | ||
81270860 | 2902 | log_struct(LOG_INFO, |
e2cc6eca | 2903 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 | 2904 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 2905 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
2906 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.", |
2907 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2908 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2909 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
81270860 | 2910 | NULL); |
e12919e8 LP |
2911 | } |
2912 | } else { | |
2913 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; | |
2914 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
2915 | ||
2916 | log_struct(LOG_INFO, | |
e2cc6eca | 2917 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 | 2918 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
2919 | LOG_MESSAGE("Startup finished in %s.", |
2920 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 2921 | NULL); |
18fa6b27 | 2922 | } |
b0c918b9 | 2923 | |
718db961 | 2924 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2925 | |
2926 | sd_notifyf(false, | |
af4ec430 LP |
2927 | "READY=1\n" |
2928 | "STATUS=Startup finished in %s.", | |
2fa4092c | 2929 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
b0c918b9 LP |
2930 | } |
2931 | ||
56dacdbc | 2932 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
2933 | assert(m); |
2934 | ||
2c289ea8 | 2935 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
2936 | return; |
2937 | ||
9771b62d LP |
2938 | /* Verify that we are actually running currently. Initially |
2939 | * the exit code is set to invalid, and during operation it is | |
2940 | * then set to MANAGER_OK */ | |
2941 | if (m->exit_code != MANAGER_OK) | |
2942 | return; | |
2943 | ||
56dacdbc | 2944 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 2945 | if (m->jobs_in_progress_event_source) |
2ae56591 | 2946 | /* Ignore any failure, this is only for feedback */ |
e7ab4d1a | 2947 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); |
56dacdbc ZJS |
2948 | |
2949 | return; | |
2950 | } | |
2951 | ||
2952 | manager_flip_auto_status(m, false); | |
2953 | ||
2954 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
2955 | manager_close_idle_pipe(m); |
2956 | ||
2957 | /* Turn off confirm spawn now */ | |
2958 | m->confirm_spawn = false; | |
2959 | ||
2960 | /* No need to update ask password status when we're going non-interactive */ | |
2961 | manager_close_ask_password(m); | |
2962 | ||
2963 | /* This is no longer the first boot */ | |
2964 | manager_set_first_boot(m, false); | |
2965 | ||
2966 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
2967 | return; | |
2968 | ||
2969 | dual_timestamp_get(&m->finish_timestamp); | |
2970 | ||
2971 | manager_notify_finished(m); | |
2972 | ||
e7ab4d1a | 2973 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
2974 | } |
2975 | ||
e801700e | 2976 | static int manager_run_generators(Manager *m) { |
f42348ac | 2977 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 2978 | const char *argv[5]; |
e801700e | 2979 | char **path; |
07719a21 | 2980 | int r; |
5a1e9937 LP |
2981 | |
2982 | assert(m); | |
2983 | ||
0d8c31ff | 2984 | if (m->test_run) |
e801700e | 2985 | return 0; |
0d8c31ff | 2986 | |
9183df70 | 2987 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
2988 | if (!paths) |
2989 | return log_oom(); | |
5a1e9937 | 2990 | |
49681057 ZJS |
2991 | /* Optimize by skipping the whole process by not creating output directories |
2992 | * if no generators are found. */ | |
e801700e | 2993 | STRV_FOREACH(path, paths) { |
a3c4eb07 | 2994 | if (access(*path, F_OK) >= 0) |
e801700e | 2995 | goto found; |
49681057 | 2996 | if (errno != ENOENT) |
e801700e | 2997 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); |
5a1e9937 | 2998 | } |
a3c4eb07 | 2999 | |
e801700e | 3000 | return 0; |
5a1e9937 | 3001 | |
e801700e | 3002 | found: |
cd64fd56 | 3003 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
07719a21 LP |
3004 | if (r < 0) |
3005 | goto finish; | |
5a1e9937 | 3006 | |
83cc030f | 3007 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3008 | argv[1] = m->lookup_paths.generator; |
3009 | argv[2] = m->lookup_paths.generator_early; | |
3010 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3011 | argv[4] = NULL; |
5a1e9937 | 3012 | |
718db961 | 3013 | RUN_WITH_UMASK(0022) |
e801700e | 3014 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv); |
5a1e9937 | 3015 | |
718db961 | 3016 | finish: |
cd64fd56 | 3017 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3018 | return r; |
5a1e9937 LP |
3019 | } |
3020 | ||
718db961 LP |
3021 | int manager_environment_add(Manager *m, char **minus, char **plus) { |
3022 | char **a = NULL, **b = NULL, **l; | |
97d0e5f8 | 3023 | assert(m); |
bcd8e6d1 | 3024 | |
718db961 | 3025 | l = m->environment; |
bcd8e6d1 | 3026 | |
718db961 LP |
3027 | if (!strv_isempty(minus)) { |
3028 | a = strv_env_delete(l, 1, minus); | |
3029 | if (!a) | |
3030 | return -ENOMEM; | |
3031 | ||
3032 | l = a; | |
3033 | } | |
3034 | ||
3035 | if (!strv_isempty(plus)) { | |
3036 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
3037 | if (!b) { |
3038 | strv_free(a); | |
718db961 | 3039 | return -ENOMEM; |
aa9f8a30 | 3040 | } |
bcd8e6d1 | 3041 | |
718db961 LP |
3042 | l = b; |
3043 | } | |
3044 | ||
3045 | if (m->environment != l) | |
3046 | strv_free(m->environment); | |
3047 | if (a != l) | |
3048 | strv_free(a); | |
3049 | if (b != l) | |
3050 | strv_free(b); | |
3051 | ||
f069efb4 LP |
3052 | m->environment = l; |
3053 | manager_clean_environment(m); | |
3054 | strv_sort(m->environment); | |
3055 | ||
97d0e5f8 UTL |
3056 | return 0; |
3057 | } | |
3058 | ||
c93ff2e9 FC |
3059 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
3060 | int i; | |
3061 | ||
3062 | assert(m); | |
3063 | ||
517d56b1 | 3064 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3065 | m->rlimit[i] = mfree(m->rlimit[i]); |
3066 | ||
07719a21 LP |
3067 | if (!default_rlimit[i]) |
3068 | continue; | |
c93ff2e9 | 3069 | |
07719a21 LP |
3070 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3071 | if (!m->rlimit[i]) | |
3072 | return -ENOMEM; | |
c93ff2e9 FC |
3073 | } |
3074 | ||
3075 | return 0; | |
3076 | } | |
3077 | ||
4cfa2c99 | 3078 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
3079 | Unit *u; |
3080 | ||
3081 | assert(m); | |
3082 | ||
463d0d15 | 3083 | if (!MANAGER_IS_SYSTEM(m)) |
f1dd0c3f LP |
3084 | return; |
3085 | ||
731a676c LP |
3086 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
3087 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 3088 | log_close_journal(); |
731a676c | 3089 | return; |
f1dd0c3f LP |
3090 | } |
3091 | ||
731a676c LP |
3092 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
3093 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 3094 | log_close_journal(); |
731a676c LP |
3095 | return; |
3096 | } | |
f1dd0c3f | 3097 | |
731a676c LP |
3098 | /* Hmm, OK, so the socket is fully up and the service is up |
3099 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
3100 | log_open(); |
3101 | } | |
3102 | ||
d450b6f2 | 3103 | void manager_set_show_status(Manager *m, ShowStatus mode) { |
27d340c7 | 3104 | assert(m); |
d450b6f2 | 3105 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); |
27d340c7 | 3106 | |
463d0d15 | 3107 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3108 | return; |
3109 | ||
76b6f3f6 ZJS |
3110 | if (m->show_status != mode) |
3111 | log_debug("%s showing of status.", | |
3112 | mode == SHOW_STATUS_NO ? "Disabling" : "Enabling"); | |
d450b6f2 | 3113 | m->show_status = mode; |
27d340c7 | 3114 | |
d450b6f2 | 3115 | if (mode > 0) |
ac5b0c13 | 3116 | (void) touch("/run/systemd/show-status"); |
27d340c7 | 3117 | else |
ac5b0c13 | 3118 | (void) unlink("/run/systemd/show-status"); |
27d340c7 LP |
3119 | } |
3120 | ||
127d5fd1 | 3121 | static bool manager_get_show_status(Manager *m, StatusType type) { |
27d340c7 LP |
3122 | assert(m); |
3123 | ||
463d0d15 | 3124 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3125 | return false; |
3126 | ||
31a7eb86 ZJS |
3127 | if (m->no_console_output) |
3128 | return false; | |
3129 | ||
d81afec1 | 3130 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) |
08510627 LP |
3131 | return false; |
3132 | ||
e46b13c8 | 3133 | /* If we cannot find out the status properly, just proceed. */ |
ebc5788e | 3134 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) |
e46b13c8 ZJS |
3135 | return false; |
3136 | ||
d450b6f2 | 3137 | if (m->show_status > 0) |
27d340c7 LP |
3138 | return true; |
3139 | ||
031886ed | 3140 | return false; |
27d340c7 | 3141 | } |
68b29a9f | 3142 | |
e2680723 LP |
3143 | void manager_set_first_boot(Manager *m, bool b) { |
3144 | assert(m); | |
3145 | ||
463d0d15 | 3146 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3147 | return; |
3148 | ||
ae2a2c53 LP |
3149 | if (m->first_boot != (int) b) { |
3150 | if (b) | |
3151 | (void) touch("/run/systemd/first-boot"); | |
3152 | else | |
3153 | (void) unlink("/run/systemd/first-boot"); | |
3154 | } | |
e2680723 | 3155 | |
ae2a2c53 | 3156 | m->first_boot = b; |
e2680723 LP |
3157 | } |
3158 | ||
127d5fd1 | 3159 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
3160 | va_list ap; |
3161 | ||
cb6531be ZJS |
3162 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
3163 | ||
3164 | if (m && !manager_get_show_status(m, type)) | |
25cee550 MS |
3165 | return; |
3166 | ||
03b717a3 MS |
3167 | /* XXX We should totally drop the check for ephemeral here |
3168 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 3169 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
3170 | return; |
3171 | ||
25cee550 | 3172 | va_start(ap, format); |
127d5fd1 | 3173 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); |
25cee550 MS |
3174 | va_end(ap); |
3175 | } | |
3176 | ||
a57f7e2c LP |
3177 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
3178 | char p[strlen(path)+1]; | |
3179 | ||
3180 | assert(m); | |
3181 | assert(path); | |
3182 | ||
3183 | strcpy(p, path); | |
3184 | path_kill_slashes(p); | |
3185 | ||
3186 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3187 | } | |
e66cf1a3 LP |
3188 | |
3189 | const char *manager_get_runtime_prefix(Manager *m) { | |
f755e3b7 | 3190 | assert(m); |
e66cf1a3 | 3191 | |
463d0d15 | 3192 | return MANAGER_IS_SYSTEM(m) ? |
e66cf1a3 LP |
3193 | "/run" : |
3194 | getenv("XDG_RUNTIME_DIR"); | |
3195 | } | |
f755e3b7 | 3196 | |
5269eb6b | 3197 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 3198 | unsigned size; |
5269eb6b | 3199 | int r; |
03455c28 LDM |
3200 | |
3201 | assert(m); | |
3202 | assert(u->manager == m); | |
3203 | ||
3204 | size = set_size(m->failed_units); | |
3205 | ||
9fff8981 | 3206 | if (failed) { |
5269eb6b LP |
3207 | r = set_ensure_allocated(&m->failed_units, NULL); |
3208 | if (r < 0) | |
3209 | return log_oom(); | |
3210 | ||
9fff8981 | 3211 | if (set_put(m->failed_units, u) < 0) |
5269eb6b | 3212 | return log_oom(); |
9fff8981 | 3213 | } else |
5269eb6b | 3214 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
3215 | |
3216 | if (set_size(m->failed_units) != size) | |
3217 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
3218 | |
3219 | return 0; | |
03455c28 LDM |
3220 | } |
3221 | ||
f755e3b7 LP |
3222 | ManagerState manager_state(Manager *m) { |
3223 | Unit *u; | |
3224 | ||
3225 | assert(m); | |
3226 | ||
3227 | /* Did we ever finish booting? If not then we are still starting up */ | |
d81afec1 LP |
3228 | if (!dual_timestamp_is_set(&m->finish_timestamp)) { |
3229 | ||
3230 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3231 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3232 | return MANAGER_INITIALIZING; | |
3233 | ||
f755e3b7 | 3234 | return MANAGER_STARTING; |
d81afec1 | 3235 | } |
f755e3b7 LP |
3236 | |
3237 | /* Is the special shutdown target queued? If so, we are in shutdown state */ | |
3238 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
f0469b8c | 3239 | if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)) |
f755e3b7 LP |
3240 | return MANAGER_STOPPING; |
3241 | ||
3242 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3243 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3244 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3245 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3246 | return MANAGER_MAINTENANCE; |
3247 | ||
3248 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); | |
3249 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3250 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3251 | return MANAGER_MAINTENANCE; |
3252 | ||
3253 | /* Are there any failed units? If so, we are in degraded mode */ | |
3254 | if (set_size(m->failed_units) > 0) | |
3255 | return MANAGER_DEGRADED; | |
3256 | ||
3257 | return MANAGER_RUNNING; | |
3258 | } | |
3259 | ||
00d9ef85 LP |
3260 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3261 | ||
3262 | static void manager_unref_uid_internal( | |
3263 | Manager *m, | |
3264 | Hashmap **uid_refs, | |
3265 | uid_t uid, | |
3266 | bool destroy_now, | |
3267 | int (*_clean_ipc)(uid_t uid)) { | |
3268 | ||
3269 | uint32_t c, n; | |
3270 | ||
3271 | assert(m); | |
3272 | assert(uid_refs); | |
3273 | assert(uid_is_valid(uid)); | |
3274 | assert(_clean_ipc); | |
3275 | ||
3276 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
3277 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
3278 | * | |
3279 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
3280 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
3281 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
3282 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
3283 | ||
3284 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3285 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3286 | ||
3287 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3288 | return; | |
3289 | ||
3290 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3291 | ||
3292 | n = c & ~DESTROY_IPC_FLAG; | |
3293 | assert(n > 0); | |
3294 | n--; | |
3295 | ||
3296 | if (destroy_now && n == 0) { | |
3297 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
3298 | ||
3299 | if (c & DESTROY_IPC_FLAG) { | |
3300 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
3301 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3302 | uid); | |
3303 | (void) _clean_ipc(uid); | |
3304 | } | |
3305 | } else { | |
3306 | c = n | (c & DESTROY_IPC_FLAG); | |
3307 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
3308 | } | |
3309 | } | |
3310 | ||
3311 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
3312 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
3313 | } | |
3314 | ||
3315 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
3316 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
3317 | } | |
3318 | ||
3319 | static int manager_ref_uid_internal( | |
3320 | Manager *m, | |
3321 | Hashmap **uid_refs, | |
3322 | uid_t uid, | |
3323 | bool clean_ipc) { | |
3324 | ||
3325 | uint32_t c, n; | |
3326 | int r; | |
3327 | ||
3328 | assert(m); | |
3329 | assert(uid_refs); | |
3330 | assert(uid_is_valid(uid)); | |
3331 | ||
3332 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
3333 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
3334 | ||
3335 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3336 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3337 | ||
3338 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3339 | return 0; | |
3340 | ||
3341 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3342 | if (r < 0) | |
3343 | return r; | |
3344 | ||
3345 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3346 | ||
3347 | n = c & ~DESTROY_IPC_FLAG; | |
3348 | n++; | |
3349 | ||
3350 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
3351 | return -EOVERFLOW; | |
3352 | ||
3353 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
3354 | ||
3355 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3356 | } | |
3357 | ||
3358 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
3359 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
3360 | } | |
3361 | ||
3362 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
3363 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
3364 | } | |
3365 | ||
3366 | static void manager_vacuum_uid_refs_internal( | |
3367 | Manager *m, | |
3368 | Hashmap **uid_refs, | |
3369 | int (*_clean_ipc)(uid_t uid)) { | |
3370 | ||
3371 | Iterator i; | |
3372 | void *p, *k; | |
3373 | ||
3374 | assert(m); | |
3375 | assert(uid_refs); | |
3376 | assert(_clean_ipc); | |
3377 | ||
3378 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3379 | uint32_t c, n; | |
3380 | uid_t uid; | |
3381 | ||
3382 | uid = PTR_TO_UID(k); | |
3383 | c = PTR_TO_UINT32(p); | |
3384 | ||
3385 | n = c & ~DESTROY_IPC_FLAG; | |
3386 | if (n > 0) | |
3387 | continue; | |
3388 | ||
3389 | if (c & DESTROY_IPC_FLAG) { | |
3390 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
3391 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3392 | uid); | |
3393 | (void) _clean_ipc(uid); | |
3394 | } | |
3395 | ||
3396 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
3397 | } | |
3398 | } | |
3399 | ||
3400 | void manager_vacuum_uid_refs(Manager *m) { | |
3401 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); | |
3402 | } | |
3403 | ||
3404 | void manager_vacuum_gid_refs(Manager *m) { | |
3405 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); | |
3406 | } | |
3407 | ||
3408 | static void manager_serialize_uid_refs_internal( | |
3409 | Manager *m, | |
3410 | FILE *f, | |
3411 | Hashmap **uid_refs, | |
3412 | const char *field_name) { | |
3413 | ||
3414 | Iterator i; | |
3415 | void *p, *k; | |
3416 | ||
3417 | assert(m); | |
3418 | assert(f); | |
3419 | assert(uid_refs); | |
3420 | assert(field_name); | |
3421 | ||
3422 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter | |
3423 | * of it is better rebuild after a reload/reexec. */ | |
3424 | ||
3425 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3426 | uint32_t c; | |
3427 | uid_t uid; | |
3428 | ||
3429 | uid = PTR_TO_UID(k); | |
3430 | c = PTR_TO_UINT32(p); | |
3431 | ||
3432 | if (!(c & DESTROY_IPC_FLAG)) | |
3433 | continue; | |
3434 | ||
3435 | fprintf(f, "%s=" UID_FMT "\n", field_name, uid); | |
3436 | } | |
3437 | } | |
3438 | ||
3439 | void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3440 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3441 | } | |
3442 | ||
3443 | void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3444 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3445 | } | |
3446 | ||
3447 | static void manager_deserialize_uid_refs_one_internal( | |
3448 | Manager *m, | |
3449 | Hashmap** uid_refs, | |
3450 | const char *value) { | |
3451 | ||
3452 | uid_t uid; | |
3453 | uint32_t c; | |
3454 | int r; | |
3455 | ||
3456 | assert(m); | |
3457 | assert(uid_refs); | |
3458 | assert(value); | |
3459 | ||
3460 | r = parse_uid(value, &uid); | |
3461 | if (r < 0 || uid == 0) { | |
3462 | log_debug("Unable to parse UID reference serialization"); | |
3463 | return; | |
3464 | } | |
3465 | ||
3466 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3467 | if (r < 0) { | |
3468 | log_oom(); | |
3469 | return; | |
3470 | } | |
3471 | ||
3472 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3473 | if (c & DESTROY_IPC_FLAG) | |
3474 | return; | |
3475 | ||
3476 | c |= DESTROY_IPC_FLAG; | |
3477 | ||
3478 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3479 | if (r < 0) { | |
3480 | log_debug("Failed to add UID reference entry"); | |
3481 | return; | |
3482 | } | |
3483 | } | |
3484 | ||
3485 | void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3486 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3487 | } | |
3488 | ||
3489 | void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3490 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3491 | } | |
3492 | ||
3493 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
3494 | struct buffer { | |
3495 | uid_t uid; | |
3496 | gid_t gid; | |
3497 | char unit_name[UNIT_NAME_MAX+1]; | |
3498 | } _packed_ buffer; | |
3499 | ||
3500 | Manager *m = userdata; | |
3501 | ssize_t l; | |
3502 | size_t n; | |
3503 | Unit *u; | |
3504 | ||
3505 | assert_se(source); | |
3506 | assert_se(m); | |
3507 | ||
3508 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
3509 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
3510 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
3511 | ||
3512 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
3513 | if (l < 0) { | |
3514 | if (errno == EINTR || errno == EAGAIN) | |
3515 | return 0; | |
3516 | ||
3517 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
3518 | } | |
3519 | ||
3520 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
3521 | log_warning("Received too short user lookup message, ignoring."); | |
3522 | return 0; | |
3523 | } | |
3524 | ||
3525 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
3526 | log_warning("Received too long user lookup message, ignoring."); | |
3527 | return 0; | |
3528 | } | |
3529 | ||
3530 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
3531 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
3532 | return 0; | |
3533 | } | |
3534 | ||
3535 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
3536 | if (memchr(buffer.unit_name, 0, n)) { | |
3537 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
3538 | return 0; | |
3539 | } | |
3540 | ||
3541 | buffer.unit_name[n] = 0; | |
3542 | u = manager_get_unit(m, buffer.unit_name); | |
3543 | if (!u) { | |
3544 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
3545 | return 0; | |
3546 | } | |
3547 | ||
3548 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
3549 | ||
3550 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
3551 | return 0; | |
3552 | } | |
3553 | ||
f755e3b7 | 3554 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 3555 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
3556 | [MANAGER_STARTING] = "starting", |
3557 | [MANAGER_RUNNING] = "running", | |
3558 | [MANAGER_DEGRADED] = "degraded", | |
3559 | [MANAGER_MAINTENANCE] = "maintenance", | |
3560 | [MANAGER_STOPPING] = "stopping", | |
3561 | }; | |
3562 | ||
3563 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
24dd31c1 LN |
3564 | |
3565 | static const char *const cad_burst_action_table[_CAD_BURST_ACTION_MAX] = { | |
3566 | [CAD_BURST_ACTION_IGNORE] = "ignore", | |
3567 | [CAD_BURST_ACTION_REBOOT] = "reboot-force", | |
3568 | [CAD_BURST_ACTION_POWEROFF] = "poweroff-force", | |
3569 | }; | |
3570 | ||
3571 | DEFINE_STRING_TABLE_LOOKUP(cad_burst_action, CADBurstAction); |