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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", | |
4b58153d | 525 | "INVOCATION_ID", |
f069efb4 LP |
526 | NULL); |
527 | } | |
528 | ||
e21fea24 | 529 | static int manager_default_environment(Manager *m) { |
71ecc858 LP |
530 | assert(m); |
531 | ||
463d0d15 | 532 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
533 | /* The system manager always starts with a clean |
534 | * environment for its children. It does not import | |
535 | * the kernel or the parents exported variables. | |
536 | * | |
537 | * The initial passed environ is untouched to keep | |
538 | * /proc/self/environ valid; it is used for tagging | |
539 | * the init process inside containers. */ | |
43638332 ZJS |
540 | m->environment = strv_new("PATH=" DEFAULT_PATH, |
541 | NULL); | |
e21fea24 KS |
542 | |
543 | /* Import locale variables LC_*= from configuration */ | |
544 | locale_setup(&m->environment); | |
43d03a83 | 545 | } else { |
e21fea24 KS |
546 | /* The user manager passes its own environment |
547 | * along to its children. */ | |
548 | m->environment = strv_copy(environ); | |
43d03a83 LP |
549 | } |
550 | ||
e21fea24 KS |
551 | if (!m->environment) |
552 | return -ENOMEM; | |
8b55b8c4 | 553 | |
f069efb4 | 554 | manager_clean_environment(m); |
9d5a3757 LP |
555 | strv_sort(m->environment); |
556 | ||
e21fea24 | 557 | return 0; |
71ecc858 LP |
558 | } |
559 | ||
463d0d15 | 560 | int manager_new(UnitFileScope scope, bool test_run, Manager **_m) { |
ce578209 | 561 | Manager *m; |
e3dd987c | 562 | int r; |
8e274523 LP |
563 | |
564 | assert(_m); | |
463d0d15 | 565 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 566 | |
915b3753 LP |
567 | m = new0(Manager, 1); |
568 | if (!m) | |
8e274523 | 569 | return -ENOMEM; |
60918275 | 570 | |
463d0d15 | 571 | m->unit_file_scope = scope; |
a16e1123 | 572 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
bd8f585b | 573 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; |
9ded9cd1 | 574 | m->default_tasks_accounting = true; |
79baeeb9 | 575 | m->default_tasks_max = UINT64_MAX; |
80876c20 | 576 | |
463d0d15 LP |
577 | #ifdef ENABLE_EFI |
578 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) | |
579 | boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); | |
580 | #endif | |
581 | ||
f2341e0a | 582 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
583 | if (MANAGER_IS_SYSTEM(m)) { |
584 | m->unit_log_field = "UNIT="; | |
585 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
586 | |
587 | m->invocation_log_field = "INVOCATION_ID="; | |
588 | m->invocation_log_format_string = "INVOCATION_ID=" SD_ID128_FORMAT_STR; | |
463d0d15 LP |
589 | } else { |
590 | m->unit_log_field = "USER_UNIT="; | |
591 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
592 | |
593 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
594 | m->invocation_log_format_string = "USER_INVOCATION_ID=" SD_ID128_FORMAT_STR; | |
463d0d15 | 595 | } |
f2341e0a | 596 | |
718db961 | 597 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; |
8742514c | 598 | |
d8fdc620 | 599 | m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = |
232f6754 | 600 | m->dev_autofs_fd = m->private_listen_fd = m->cgroup_inotify_fd = |
d8fdc620 | 601 | m->ask_password_inotify_fd = -1; |
d379d442 | 602 | |
00d9ef85 LP |
603 | m->user_lookup_fds[0] = m->user_lookup_fds[1] = -1; |
604 | ||
ea430986 | 605 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 606 | |
e46b13c8 | 607 | m->have_ask_password = -EINVAL; /* we don't know */ |
ae2a2c53 | 608 | m->first_boot = -1; |
e46b13c8 | 609 | |
0d8c31ff ZJS |
610 | m->test_run = test_run; |
611 | ||
2e5c94b9 LP |
612 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
613 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
614 | ||
e21fea24 KS |
615 | r = manager_default_environment(m); |
616 | if (r < 0) | |
1137a57c LP |
617 | goto fail; |
618 | ||
d5099efc | 619 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 620 | if (r < 0) |
60918275 LP |
621 | goto fail; |
622 | ||
d5099efc | 623 | r = hashmap_ensure_allocated(&m->jobs, NULL); |
718db961 | 624 | if (r < 0) |
60918275 LP |
625 | goto fail; |
626 | ||
d5099efc | 627 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); |
718db961 | 628 | if (r < 0) |
9152c765 LP |
629 | goto fail; |
630 | ||
d5099efc | 631 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 632 | if (r < 0) |
05e343b7 LP |
633 | goto fail; |
634 | ||
718db961 LP |
635 | r = sd_event_default(&m->event); |
636 | if (r < 0) | |
8742514c LP |
637 | goto fail; |
638 | ||
151b9b96 | 639 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); |
752b5905 LP |
640 | if (r < 0) |
641 | goto fail; | |
642 | ||
643 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
644 | if (r < 0) | |
645 | goto fail; | |
646 | ||
647 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
648 | if (r < 0) | |
649 | goto fail; | |
650 | ||
7dfbe2e3 TG |
651 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); |
652 | ||
8742514c LP |
653 | r = manager_setup_signals(m); |
654 | if (r < 0) | |
9152c765 LP |
655 | goto fail; |
656 | ||
8742514c LP |
657 | r = manager_setup_cgroup(m); |
658 | if (r < 0) | |
8e274523 LP |
659 | goto fail; |
660 | ||
8742514c LP |
661 | r = manager_setup_time_change(m); |
662 | if (r < 0) | |
8c47c732 LP |
663 | goto fail; |
664 | ||
9670d583 LP |
665 | m->udev = udev_new(); |
666 | if (!m->udev) { | |
667 | r = -ENOMEM; | |
668 | goto fail; | |
669 | } | |
670 | ||
232f6754 ZJS |
671 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
672 | * since they might have gotten serialized across the reexec. */ | |
d86f9d52 | 673 | |
72bc8d00 LP |
674 | m->taint_usr = dir_is_empty("/usr") > 0; |
675 | ||
8e274523 LP |
676 | *_m = m; |
677 | return 0; | |
60918275 LP |
678 | |
679 | fail: | |
680 | manager_free(m); | |
8e274523 | 681 | return r; |
60918275 LP |
682 | } |
683 | ||
d86f9d52 | 684 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 685 | int r; |
d86f9d52 | 686 | |
0d8c31ff ZJS |
687 | if (m->test_run) |
688 | return 0; | |
689 | ||
d86f9d52 LP |
690 | if (m->notify_fd < 0) { |
691 | _cleanup_close_ int fd = -1; | |
920b52e4 | 692 | union sockaddr_union sa = { |
7181dbdb LP |
693 | .sa.sa_family = AF_UNIX, |
694 | }; | |
55836941 | 695 | static const int one = 1; |
92dd7c49 | 696 | const char *e; |
d86f9d52 LP |
697 | |
698 | /* First free all secondary fields */ | |
a1e58e8e | 699 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
700 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
701 | ||
702 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
703 | if (fd < 0) |
704 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 705 | |
a47806fa LP |
706 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
707 | ||
92dd7c49 LP |
708 | e = manager_get_runtime_prefix(m); |
709 | if (!e) { | |
710 | log_error("Failed to determine runtime prefix."); | |
711 | return -EINVAL; | |
7181dbdb | 712 | } |
92dd7c49 LP |
713 | |
714 | m->notify_socket = strappend(e, "/systemd/notify"); | |
498e87d6 LP |
715 | if (!m->notify_socket) |
716 | return log_oom(); | |
717 | ||
718 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
f0e62e89 | 719 | (void) unlink(m->notify_socket); |
7181dbdb LP |
720 | |
721 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
fc2fffe7 | 722 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
4a62c710 MS |
723 | if (r < 0) |
724 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
d86f9d52 LP |
725 | |
726 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
727 | if (r < 0) |
728 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
d86f9d52 | 729 | |
d86f9d52 LP |
730 | m->notify_fd = fd; |
731 | fd = -1; | |
732 | ||
733 | log_debug("Using notification socket %s", m->notify_socket); | |
734 | } | |
735 | ||
736 | if (!m->notify_event_source) { | |
151b9b96 | 737 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
738 | if (r < 0) |
739 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 740 | |
d8fdc620 LP |
741 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
742 | * service an exit message belongs. */ | |
df006034 | 743 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7); |
23bbb0de MS |
744 | if (r < 0) |
745 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
746 | |
747 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
748 | } |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
d8fdc620 LP |
753 | static int manager_setup_cgroups_agent(Manager *m) { |
754 | ||
755 | static const union sockaddr_union sa = { | |
756 | .un.sun_family = AF_UNIX, | |
757 | .un.sun_path = "/run/systemd/cgroups-agent", | |
758 | }; | |
759 | int r; | |
760 | ||
761 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
762 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
763 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
764 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
765 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
766 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
767 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
768 | * we thus won't lose messages. | |
769 | * | |
770 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
771 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
772 | * bus for these messages. */ | |
773 | ||
774 | if (m->test_run) | |
775 | return 0; | |
776 | ||
777 | if (!MANAGER_IS_SYSTEM(m)) | |
778 | return 0; | |
779 | ||
5da38d07 | 780 | if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) > 0) /* We don't need this anymore on the unified hierarchy */ |
d8fdc620 LP |
781 | return 0; |
782 | ||
783 | if (m->cgroups_agent_fd < 0) { | |
784 | _cleanup_close_ int fd = -1; | |
785 | ||
786 | /* First free all secondary fields */ | |
787 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
788 | ||
789 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
790 | if (fd < 0) | |
791 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
792 | ||
793 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
794 | ||
795 | (void) unlink(sa.un.sun_path); | |
796 | ||
797 | /* Only allow root to connect to this socket */ | |
798 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 799 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
800 | if (r < 0) |
801 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
802 | ||
803 | m->cgroups_agent_fd = fd; | |
804 | fd = -1; | |
805 | } | |
806 | ||
807 | if (!m->cgroups_agent_event_source) { | |
808 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
809 | if (r < 0) | |
810 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
811 | ||
812 | /* Process cgroups notifications early, but after having processed service notification messages or | |
813 | * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, | |
814 | * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of | |
815 | * cgroup inotify for the unified cgroup stuff. */ | |
816 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5); | |
817 | if (r < 0) | |
818 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
819 | ||
820 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
821 | } | |
822 | ||
823 | return 0; | |
824 | } | |
825 | ||
00d9ef85 LP |
826 | static int manager_setup_user_lookup_fd(Manager *m) { |
827 | int r; | |
828 | ||
829 | assert(m); | |
830 | ||
831 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
832 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
833 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
834 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
835 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
836 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
837 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
838 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
839 | * this purpose. | |
840 | * | |
841 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
842 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
843 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
844 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
845 | * | |
846 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
847 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
848 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
849 | ||
850 | if (m->user_lookup_fds[0] < 0) { | |
851 | ||
852 | /* Free all secondary fields */ | |
853 | safe_close_pair(m->user_lookup_fds); | |
854 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
855 | ||
856 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
857 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
858 | ||
859 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
860 | } | |
861 | ||
862 | if (!m->user_lookup_event_source) { | |
863 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
864 | if (r < 0) | |
865 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
866 | ||
867 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
868 | * resolutions */ | |
869 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-8); | |
870 | if (r < 0) | |
871 | return log_error_errno(errno, "Failed to set priority ot user lookup event source: %m"); | |
872 | ||
873 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
874 | } | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
d86f9d52 LP |
879 | static int manager_connect_bus(Manager *m, bool reexecuting) { |
880 | bool try_bus_connect; | |
881 | ||
882 | assert(m); | |
883 | ||
0d8c31ff ZJS |
884 | if (m->test_run) |
885 | return 0; | |
886 | ||
d86f9d52 | 887 | try_bus_connect = |
d86f9d52 | 888 | reexecuting || |
463d0d15 | 889 | (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS")); |
d86f9d52 | 890 | |
ff9b60f3 | 891 | /* Try to connect to the buses, if possible. */ |
d86f9d52 LP |
892 | return bus_init(m, try_bus_connect); |
893 | } | |
894 | ||
23a177ef | 895 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 896 | Unit *u; |
23a177ef LP |
897 | unsigned n = 0; |
898 | ||
899 | assert(m); | |
900 | ||
595ed347 MS |
901 | while ((u = m->cleanup_queue)) { |
902 | assert(u->in_cleanup_queue); | |
23a177ef | 903 | |
595ed347 | 904 | unit_free(u); |
23a177ef LP |
905 | n++; |
906 | } | |
907 | ||
908 | return n; | |
909 | } | |
910 | ||
eced69b3 | 911 | enum { |
35b8ca3a | 912 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
913 | GC_OFFSET_UNSURE, /* No clue */ |
914 | GC_OFFSET_GOOD, /* We still need this unit */ | |
915 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
916 | _GC_OFFSET_MAX | |
917 | }; | |
918 | ||
00d9ef85 | 919 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
920 | Iterator i; |
921 | Unit *other; | |
922 | ||
923 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
924 | ||
925 | /* Recursively mark referenced units as GOOD as well */ | |
926 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCES], i) | |
927 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) | |
928 | unit_gc_mark_good(other, gc_marker); | |
929 | } | |
930 | ||
eced69b3 | 931 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 LP |
932 | Iterator i; |
933 | Unit *other; | |
eced69b3 | 934 | bool is_bad; |
701cc384 LP |
935 | |
936 | assert(u); | |
937 | ||
ac155bb8 MS |
938 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
939 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
4892084f | 940 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE || |
ac155bb8 | 941 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) |
701cc384 LP |
942 | return; |
943 | ||
ac155bb8 | 944 | if (u->in_cleanup_queue) |
701cc384 LP |
945 | goto bad; |
946 | ||
947 | if (unit_check_gc(u)) | |
948 | goto good; | |
949 | ||
ac155bb8 | 950 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
951 | |
952 | is_bad = true; | |
953 | ||
ac155bb8 | 954 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
955 | unit_gc_sweep(other, gc_marker); |
956 | ||
ac155bb8 | 957 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 958 | goto good; |
eced69b3 | 959 | |
ac155bb8 | 960 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 961 | is_bad = false; |
701cc384 LP |
962 | } |
963 | ||
eced69b3 LP |
964 | if (is_bad) |
965 | goto bad; | |
966 | ||
967 | /* We were unable to find anything out about this entry, so | |
968 | * let's investigate it later */ | |
ac155bb8 | 969 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
970 | unit_add_to_gc_queue(u); |
971 | return; | |
972 | ||
701cc384 | 973 | bad: |
eced69b3 LP |
974 | /* We definitely know that this one is not useful anymore, so |
975 | * let's mark it for deletion */ | |
ac155bb8 | 976 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 977 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
978 | return; |
979 | ||
980 | good: | |
4892084f | 981 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
982 | } |
983 | ||
984 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
595ed347 | 985 | Unit *u; |
701cc384 | 986 | unsigned n = 0; |
eced69b3 | 987 | unsigned gc_marker; |
701cc384 LP |
988 | |
989 | assert(m); | |
990 | ||
cf1265e1 | 991 | /* log_debug("Running GC..."); */ |
701cc384 | 992 | |
eced69b3 LP |
993 | m->gc_marker += _GC_OFFSET_MAX; |
994 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 995 | m->gc_marker = 1; |
701cc384 | 996 | |
eced69b3 LP |
997 | gc_marker = m->gc_marker; |
998 | ||
595ed347 MS |
999 | while ((u = m->gc_queue)) { |
1000 | assert(u->in_gc_queue); | |
701cc384 | 1001 | |
595ed347 | 1002 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1003 | |
71fda00f | 1004 | LIST_REMOVE(gc_queue, m->gc_queue, u); |
595ed347 | 1005 | u->in_gc_queue = false; |
701cc384 LP |
1006 | |
1007 | n++; | |
1008 | ||
595ed347 MS |
1009 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
1010 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
cc3bc3e6 | 1011 | if (u->id) |
f2341e0a | 1012 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1013 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1014 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1015 | } |
1016 | } | |
1017 | ||
1018 | m->n_in_gc_queue = 0; | |
701cc384 LP |
1019 | |
1020 | return n; | |
1021 | } | |
1022 | ||
a16e1123 | 1023 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1024 | Unit *u; |
60918275 LP |
1025 | |
1026 | assert(m); | |
1027 | ||
87f0e418 LP |
1028 | while ((u = hashmap_first(m->units))) |
1029 | unit_free(u); | |
964e0949 LP |
1030 | |
1031 | manager_dispatch_cleanup_queue(m); | |
1032 | ||
1033 | assert(!m->load_queue); | |
1034 | assert(!m->run_queue); | |
1035 | assert(!m->dbus_unit_queue); | |
1036 | assert(!m->dbus_job_queue); | |
1037 | assert(!m->cleanup_queue); | |
1038 | assert(!m->gc_queue); | |
1039 | ||
964e0949 LP |
1040 | assert(hashmap_isempty(m->jobs)); |
1041 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1042 | |
1043 | m->n_on_console = 0; | |
1044 | m->n_running_jobs = 0; | |
a16e1123 LP |
1045 | } |
1046 | ||
06d8d842 | 1047 | Manager* manager_free(Manager *m) { |
a16e1123 | 1048 | UnitType c; |
c93ff2e9 | 1049 | int i; |
87f0e418 | 1050 | |
06d8d842 ZJS |
1051 | if (!m) |
1052 | return NULL; | |
a16e1123 LP |
1053 | |
1054 | manager_clear_jobs_and_units(m); | |
23a177ef | 1055 | |
7824bbeb LP |
1056 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
1057 | if (unit_vtable[c]->shutdown) | |
1058 | unit_vtable[c]->shutdown(m); | |
1059 | ||
a16e1123 LP |
1060 | /* If we reexecute ourselves, we keep the root cgroup |
1061 | * around */ | |
c6c18be3 | 1062 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 1063 | |
07a78643 | 1064 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1065 | |
5e8d1c9a | 1066 | bus_done(m); |
ea430986 | 1067 | |
29206d46 LP |
1068 | dynamic_user_vacuum(m, false); |
1069 | hashmap_free(m->dynamic_users); | |
1070 | ||
87f0e418 | 1071 | hashmap_free(m->units); |
4b58153d | 1072 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1073 | hashmap_free(m->jobs); |
5ba6985b LP |
1074 | hashmap_free(m->watch_pids1); |
1075 | hashmap_free(m->watch_pids2); | |
05e343b7 | 1076 | hashmap_free(m->watch_bus); |
9152c765 | 1077 | |
95ae05c0 | 1078 | set_free(m->startup_units); |
f755e3b7 LP |
1079 | set_free(m->failed_units); |
1080 | ||
718db961 LP |
1081 | sd_event_source_unref(m->signal_event_source); |
1082 | sd_event_source_unref(m->notify_event_source); | |
d8fdc620 | 1083 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 LP |
1084 | sd_event_source_unref(m->time_change_event_source); |
1085 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
752b5905 | 1086 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1087 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1088 | |
03e334a1 LP |
1089 | safe_close(m->signal_fd); |
1090 | safe_close(m->notify_fd); | |
d8fdc620 | 1091 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1092 | safe_close(m->time_change_fd); |
00d9ef85 | 1093 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1094 | |
e46b13c8 ZJS |
1095 | manager_close_ask_password(m); |
1096 | ||
718db961 LP |
1097 | manager_close_idle_pipe(m); |
1098 | ||
9670d583 | 1099 | udev_unref(m->udev); |
718db961 | 1100 | sd_event_unref(m->event); |
60918275 | 1101 | |
c952c6ec LP |
1102 | free(m->notify_socket); |
1103 | ||
84e3543e | 1104 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 1105 | strv_free(m->environment); |
036643a2 | 1106 | |
4ad49000 | 1107 | hashmap_free(m->cgroup_unit); |
c6c18be3 | 1108 | set_free_free(m->unit_path_cache); |
33be102a | 1109 | |
664f88a7 LP |
1110 | free(m->switch_root); |
1111 | free(m->switch_root_init); | |
1112 | ||
517d56b1 | 1113 | for (i = 0; i < _RLIMIT_MAX; i++) |
d9814c76 | 1114 | m->rlimit[i] = mfree(m->rlimit[i]); |
c93ff2e9 | 1115 | |
a57f7e2c LP |
1116 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1117 | hashmap_free(m->units_requiring_mounts_for); | |
1118 | ||
00d9ef85 LP |
1119 | hashmap_free(m->uid_refs); |
1120 | hashmap_free(m->gid_refs); | |
1121 | ||
6b430fdb | 1122 | return mfree(m); |
60918275 LP |
1123 | } |
1124 | ||
ba64af90 | 1125 | void manager_enumerate(Manager *m) { |
f50e0a01 | 1126 | UnitType c; |
f50e0a01 LP |
1127 | |
1128 | assert(m); | |
1129 | ||
a16e1123 LP |
1130 | /* Let's ask every type to load all units from disk/kernel |
1131 | * that it might know */ | |
0faacd47 | 1132 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1133 | if (!unit_type_supported(c)) { |
03afec3c | 1134 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1135 | continue; |
a57f7e2c | 1136 | } |
f50e0a01 | 1137 | |
0faacd47 LP |
1138 | if (!unit_vtable[c]->enumerate) |
1139 | continue; | |
1140 | ||
ba64af90 | 1141 | unit_vtable[c]->enumerate(m); |
0faacd47 LP |
1142 | } |
1143 | ||
f50e0a01 | 1144 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1145 | } |
1146 | ||
007c6337 | 1147 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1148 | Iterator i; |
1149 | Unit *u; | |
1150 | char *k; | |
007c6337 | 1151 | int r; |
a16e1123 LP |
1152 | |
1153 | assert(m); | |
f50e0a01 LP |
1154 | |
1155 | /* Then, let's set up their initial state. */ | |
1156 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1157 | ||
1158 | /* ignore aliases */ | |
ac155bb8 | 1159 | if (u->id != k) |
f50e0a01 LP |
1160 | continue; |
1161 | ||
007c6337 LP |
1162 | r = unit_coldplug(u); |
1163 | if (r < 0) | |
1164 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1165 | } |
a16e1123 LP |
1166 | } |
1167 | ||
fe51822e LP |
1168 | static void manager_build_unit_path_cache(Manager *m) { |
1169 | char **i; | |
fe51822e LP |
1170 | int r; |
1171 | ||
1172 | assert(m); | |
1173 | ||
1174 | set_free_free(m->unit_path_cache); | |
1175 | ||
d5099efc | 1176 | m->unit_path_cache = set_new(&string_hash_ops); |
874310b7 | 1177 | if (!m->unit_path_cache) { |
d063a527 LP |
1178 | r = -ENOMEM; |
1179 | goto fail; | |
fe51822e LP |
1180 | } |
1181 | ||
1182 | /* This simply builds a list of files we know exist, so that | |
1183 | * we don't always have to go to disk */ | |
1184 | ||
a3c4eb07 | 1185 | STRV_FOREACH(i, m->lookup_paths.search_path) { |
d063a527 | 1186 | _cleanup_closedir_ DIR *d = NULL; |
fe51822e LP |
1187 | struct dirent *de; |
1188 | ||
bd0af849 ZJS |
1189 | d = opendir(*i); |
1190 | if (!d) { | |
874310b7 | 1191 | if (errno != ENOENT) |
d063a527 | 1192 | log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); |
fe51822e LP |
1193 | continue; |
1194 | } | |
1195 | ||
d063a527 | 1196 | FOREACH_DIRENT(de, d, r = -errno; goto fail) { |
fe51822e LP |
1197 | char *p; |
1198 | ||
b7def684 | 1199 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
44d91056 | 1200 | if (!p) { |
fe51822e LP |
1201 | r = -ENOMEM; |
1202 | goto fail; | |
1203 | } | |
1204 | ||
ef42202a ZJS |
1205 | r = set_consume(m->unit_path_cache, p); |
1206 | if (r < 0) | |
fe51822e | 1207 | goto fail; |
fe51822e | 1208 | } |
fe51822e LP |
1209 | } |
1210 | ||
1211 | return; | |
1212 | ||
1213 | fail: | |
d063a527 LP |
1214 | log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); |
1215 | m->unit_path_cache = set_free_free(m->unit_path_cache); | |
fe51822e LP |
1216 | } |
1217 | ||
9ff1a6f1 | 1218 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1219 | Iterator i; |
9ff1a6f1 | 1220 | Unit *u; |
9588bc32 LP |
1221 | |
1222 | assert(m); | |
1223 | ||
1224 | HASHMAP_FOREACH(u, m->units, i) { | |
1225 | ||
1226 | if (fdset_size(fds) <= 0) | |
1227 | break; | |
1228 | ||
9ff1a6f1 LP |
1229 | if (!UNIT_VTABLE(u)->distribute_fds) |
1230 | continue; | |
9588bc32 | 1231 | |
9ff1a6f1 LP |
1232 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1233 | } | |
9588bc32 LP |
1234 | } |
1235 | ||
a16e1123 LP |
1236 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
1237 | int r, q; | |
1238 | ||
1239 | assert(m); | |
1240 | ||
4943d143 | 1241 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
1242 | if (r < 0) |
1243 | return r; | |
5a1e9937 | 1244 | |
39591351 | 1245 | /* Make sure the transient directory always exists, so that it remains in the search path */ |
a63ee407 ZJS |
1246 | if (!m->test_run) { |
1247 | r = mkdir_p_label(m->lookup_paths.transient, 0755); | |
1248 | if (r < 0) | |
1249 | return r; | |
1250 | } | |
39591351 | 1251 | |
a3c4eb07 LP |
1252 | dual_timestamp_get(&m->generators_start_timestamp); |
1253 | r = manager_run_generators(m); | |
1254 | dual_timestamp_get(&m->generators_finish_timestamp); | |
07719a21 LP |
1255 | if (r < 0) |
1256 | return r; | |
1257 | ||
a1453343 | 1258 | lookup_paths_reduce(&m->lookup_paths); |
fe51822e LP |
1259 | manager_build_unit_path_cache(m); |
1260 | ||
9f611ad8 LP |
1261 | /* If we will deserialize make sure that during enumeration |
1262 | * this is already known, so we increase the counter here | |
1263 | * already */ | |
1264 | if (serialization) | |
313cefa1 | 1265 | m->n_reloading++; |
9f611ad8 | 1266 | |
a16e1123 | 1267 | /* First, enumerate what we can from all config files */ |
718db961 | 1268 | dual_timestamp_get(&m->units_load_start_timestamp); |
ba64af90 | 1269 | manager_enumerate(m); |
718db961 | 1270 | dual_timestamp_get(&m->units_load_finish_timestamp); |
a16e1123 LP |
1271 | |
1272 | /* Second, deserialize if there is something to deserialize */ | |
1cd974ed ZJS |
1273 | if (serialization) |
1274 | r = manager_deserialize(m, serialization, fds); | |
a16e1123 | 1275 | |
01e10de3 LP |
1276 | /* Any fds left? Find some unit which wants them. This is |
1277 | * useful to allow container managers to pass some file | |
1278 | * descriptors to us pre-initialized. This enables | |
1279 | * socket-based activation of entire containers. */ | |
9ff1a6f1 | 1280 | manager_distribute_fds(m, fds); |
01e10de3 | 1281 | |
d86f9d52 LP |
1282 | /* We might have deserialized the notify fd, but if we didn't |
1283 | * then let's create the bus now */ | |
1cd974ed ZJS |
1284 | q = manager_setup_notify(m); |
1285 | if (q < 0 && r == 0) | |
1286 | r = q; | |
d86f9d52 | 1287 | |
d8fdc620 LP |
1288 | q = manager_setup_cgroups_agent(m); |
1289 | if (q < 0 && r == 0) | |
1290 | r = q; | |
1291 | ||
00d9ef85 LP |
1292 | q = manager_setup_user_lookup_fd(m); |
1293 | if (q < 0 && r == 0) | |
1294 | r = q; | |
1295 | ||
232f6754 | 1296 | /* Let's connect to the bus now. */ |
05a98afd LP |
1297 | (void) manager_connect_bus(m, !!serialization); |
1298 | ||
1299 | (void) bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); | |
1300 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
e3dd987c | 1301 | |
a16e1123 | 1302 | /* Third, fire things up! */ |
007c6337 | 1303 | manager_coldplug(m); |
a16e1123 | 1304 | |
29206d46 LP |
1305 | /* Release any dynamic users no longer referenced */ |
1306 | dynamic_user_vacuum(m, true); | |
1307 | ||
00d9ef85 LP |
1308 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
1309 | manager_vacuum_uid_refs(m); | |
1310 | manager_vacuum_gid_refs(m); | |
1311 | ||
9f611ad8 | 1312 | if (serialization) { |
a7556052 | 1313 | assert(m->n_reloading > 0); |
313cefa1 | 1314 | m->n_reloading--; |
71445ae7 LP |
1315 | |
1316 | /* Let's wait for the UnitNew/JobNew messages being | |
1317 | * sent, before we notify that the reload is | |
1318 | * finished */ | |
1319 | m->send_reloading_done = true; | |
9f611ad8 LP |
1320 | } |
1321 | ||
a16e1123 | 1322 | return r; |
f50e0a01 LP |
1323 | } |
1324 | ||
4bd29fe5 | 1325 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) { |
e5b5ae50 | 1326 | int r; |
7527cb52 | 1327 | Transaction *tr; |
e5b5ae50 LP |
1328 | |
1329 | assert(m); | |
1330 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1331 | assert(unit); |
e5b5ae50 | 1332 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1333 | |
7358dc02 ZJS |
1334 | if (mode == JOB_ISOLATE && type != JOB_START) |
1335 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
c497c7a9 | 1336 | |
7358dc02 ZJS |
1337 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1338 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
2528a7a6 | 1339 | |
f2341e0a | 1340 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1341 | |
c6497ccb | 1342 | type = job_type_collapse(type, unit); |
e0209d83 | 1343 | |
23ade460 | 1344 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1345 | if (!tr) |
1346 | return -ENOMEM; | |
11dd41ce | 1347 | |
4bd29fe5 | 1348 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
7527cb52 | 1349 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, |
b94fbd30 | 1350 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
1351 | if (r < 0) |
1352 | goto tr_abort; | |
c497c7a9 | 1353 | |
7527cb52 MS |
1354 | if (mode == JOB_ISOLATE) { |
1355 | r = transaction_add_isolate_jobs(tr, m); | |
1356 | if (r < 0) | |
1357 | goto tr_abort; | |
1358 | } | |
1359 | ||
1360 | r = transaction_activate(tr, m, mode, e); | |
1361 | if (r < 0) | |
1362 | goto tr_abort; | |
e5b5ae50 | 1363 | |
f2341e0a | 1364 | log_unit_debug(unit, |
66870f90 ZJS |
1365 | "Enqueued job %s/%s as %u", unit->id, |
1366 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1367 | |
e5b5ae50 | 1368 | if (_ret) |
b94fbd30 | 1369 | *_ret = tr->anchor_job; |
60918275 | 1370 | |
7527cb52 | 1371 | transaction_free(tr); |
e5b5ae50 | 1372 | return 0; |
7527cb52 MS |
1373 | |
1374 | tr_abort: | |
1375 | transaction_abort(tr); | |
1376 | transaction_free(tr); | |
1377 | return r; | |
e5b5ae50 | 1378 | } |
60918275 | 1379 | |
53f18416 | 1380 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) { |
28247076 LP |
1381 | Unit *unit; |
1382 | int r; | |
1383 | ||
1384 | assert(m); | |
1385 | assert(type < _JOB_TYPE_MAX); | |
1386 | assert(name); | |
1387 | assert(mode < _JOB_MODE_MAX); | |
1388 | ||
c3090674 LP |
1389 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1390 | if (r < 0) | |
28247076 LP |
1391 | return r; |
1392 | ||
53f18416 LP |
1393 | return manager_add_job(m, type, unit, mode, e, ret); |
1394 | } | |
1395 | ||
1396 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) { | |
4afd3348 | 1397 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1398 | int r; |
1399 | ||
1400 | assert(m); | |
1401 | assert(type < _JOB_TYPE_MAX); | |
1402 | assert(name); | |
1403 | assert(mode < _JOB_MODE_MAX); | |
1404 | ||
1405 | r = manager_add_job_by_name(m, type, name, mode, &error, ret); | |
1406 | if (r < 0) | |
1407 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1408 | ||
1409 | return r; | |
28247076 LP |
1410 | } |
1411 | ||
60918275 LP |
1412 | Job *manager_get_job(Manager *m, uint32_t id) { |
1413 | assert(m); | |
1414 | ||
1415 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1416 | } | |
1417 | ||
87f0e418 | 1418 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1419 | assert(m); |
1420 | assert(name); | |
1421 | ||
87f0e418 | 1422 | return hashmap_get(m->units, name); |
60918275 LP |
1423 | } |
1424 | ||
c1e1601e | 1425 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1426 | Unit *u; |
c1e1601e | 1427 | unsigned n = 0; |
60918275 LP |
1428 | |
1429 | assert(m); | |
1430 | ||
223dabab LP |
1431 | /* Make sure we are not run recursively */ |
1432 | if (m->dispatching_load_queue) | |
c1e1601e | 1433 | return 0; |
223dabab LP |
1434 | |
1435 | m->dispatching_load_queue = true; | |
1436 | ||
87f0e418 | 1437 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1438 | * tries to load its data until the queue is empty */ |
1439 | ||
595ed347 MS |
1440 | while ((u = m->load_queue)) { |
1441 | assert(u->in_load_queue); | |
034c6ed7 | 1442 | |
595ed347 | 1443 | unit_load(u); |
c1e1601e | 1444 | n++; |
60918275 LP |
1445 | } |
1446 | ||
223dabab | 1447 | m->dispatching_load_queue = false; |
c1e1601e | 1448 | return n; |
60918275 LP |
1449 | } |
1450 | ||
c2756a68 LP |
1451 | int manager_load_unit_prepare( |
1452 | Manager *m, | |
1453 | const char *name, | |
1454 | const char *path, | |
718db961 | 1455 | sd_bus_error *e, |
c2756a68 LP |
1456 | Unit **_ret) { |
1457 | ||
87f0e418 | 1458 | Unit *ret; |
7d17cfbc | 1459 | UnitType t; |
60918275 LP |
1460 | int r; |
1461 | ||
1462 | assert(m); | |
9e2f7c11 | 1463 | assert(name || path); |
60918275 | 1464 | |
db06e3b6 LP |
1465 | /* This will prepare the unit for loading, but not actually |
1466 | * load anything from disk. */ | |
0301abf4 | 1467 | |
718db961 LP |
1468 | if (path && !is_path(path)) |
1469 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 LP |
1470 | |
1471 | if (!name) | |
2b6bf07d | 1472 | name = basename(path); |
9e2f7c11 | 1473 | |
7d17cfbc MS |
1474 | t = unit_name_to_type(name); |
1475 | ||
5d512d54 LN |
1476 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1477 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1478 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1479 | ||
718db961 | 1480 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1481 | } |
60918275 | 1482 | |
7d17cfbc MS |
1483 | ret = manager_get_unit(m, name); |
1484 | if (ret) { | |
034c6ed7 | 1485 | *_ret = ret; |
413d6313 | 1486 | return 1; |
034c6ed7 | 1487 | } |
60918275 | 1488 | |
7d17cfbc MS |
1489 | ret = unit_new(m, unit_vtable[t]->object_size); |
1490 | if (!ret) | |
60918275 LP |
1491 | return -ENOMEM; |
1492 | ||
7d17cfbc | 1493 | if (path) { |
ac155bb8 MS |
1494 | ret->fragment_path = strdup(path); |
1495 | if (!ret->fragment_path) { | |
0301abf4 LP |
1496 | unit_free(ret); |
1497 | return -ENOMEM; | |
1498 | } | |
7d17cfbc | 1499 | } |
0301abf4 | 1500 | |
1058cbf2 ZJS |
1501 | r = unit_add_name(ret, name); |
1502 | if (r < 0) { | |
87f0e418 | 1503 | unit_free(ret); |
1ffba6fe | 1504 | return r; |
60918275 LP |
1505 | } |
1506 | ||
87f0e418 | 1507 | unit_add_to_load_queue(ret); |
c1e1601e | 1508 | unit_add_to_dbus_queue(ret); |
949061f0 | 1509 | unit_add_to_gc_queue(ret); |
c1e1601e | 1510 | |
db06e3b6 LP |
1511 | if (_ret) |
1512 | *_ret = ret; | |
1513 | ||
1514 | return 0; | |
1515 | } | |
1516 | ||
c2756a68 LP |
1517 | int manager_load_unit( |
1518 | Manager *m, | |
1519 | const char *name, | |
1520 | const char *path, | |
718db961 | 1521 | sd_bus_error *e, |
c2756a68 LP |
1522 | Unit **_ret) { |
1523 | ||
db06e3b6 LP |
1524 | int r; |
1525 | ||
1526 | assert(m); | |
1527 | ||
1528 | /* This will load the service information files, but not actually | |
1529 | * start any services or anything. */ | |
1530 | ||
c3090674 LP |
1531 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
1532 | if (r != 0) | |
db06e3b6 LP |
1533 | return r; |
1534 | ||
f50e0a01 | 1535 | manager_dispatch_load_queue(m); |
60918275 | 1536 | |
9e2f7c11 | 1537 | if (_ret) |
413d6313 | 1538 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1539 | |
60918275 LP |
1540 | return 0; |
1541 | } | |
a66d02c3 | 1542 | |
cea8e32e | 1543 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1544 | Iterator i; |
a66d02c3 LP |
1545 | Job *j; |
1546 | ||
1547 | assert(s); | |
1548 | assert(f); | |
1549 | ||
034c6ed7 | 1550 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1551 | job_dump(j, f, prefix); |
a66d02c3 LP |
1552 | } |
1553 | ||
87f0e418 | 1554 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1555 | Iterator i; |
87f0e418 | 1556 | Unit *u; |
11dd41ce | 1557 | const char *t; |
a66d02c3 LP |
1558 | |
1559 | assert(s); | |
1560 | assert(f); | |
1561 | ||
87f0e418 | 1562 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 1563 | if (u->id == t) |
87f0e418 | 1564 | unit_dump(u, f, prefix); |
a66d02c3 | 1565 | } |
7fad411c LP |
1566 | |
1567 | void manager_clear_jobs(Manager *m) { | |
1568 | Job *j; | |
1569 | ||
1570 | assert(m); | |
1571 | ||
7fad411c | 1572 | while ((j = hashmap_first(m->jobs))) |
5273510e | 1573 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 1574 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 1575 | } |
83c60c9f | 1576 | |
752b5905 LP |
1577 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
1578 | Manager *m = userdata; | |
83c60c9f | 1579 | Job *j; |
034c6ed7 | 1580 | |
752b5905 LP |
1581 | assert(source); |
1582 | assert(m); | |
9152c765 | 1583 | |
034c6ed7 | 1584 | while ((j = m->run_queue)) { |
ac1135be | 1585 | assert(j->installed); |
034c6ed7 LP |
1586 | assert(j->in_run_queue); |
1587 | ||
1588 | job_run_and_invalidate(j); | |
9152c765 | 1589 | } |
034c6ed7 | 1590 | |
a0b64226 | 1591 | if (m->n_running_jobs > 0) |
03b717a3 MS |
1592 | manager_watch_jobs_in_progress(m); |
1593 | ||
31a7eb86 ZJS |
1594 | if (m->n_on_console > 0) |
1595 | manager_watch_idle_pipe(m); | |
1596 | ||
752b5905 | 1597 | return 1; |
c1e1601e LP |
1598 | } |
1599 | ||
9588bc32 | 1600 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
c1e1601e | 1601 | Job *j; |
595ed347 | 1602 | Unit *u; |
c1e1601e LP |
1603 | unsigned n = 0; |
1604 | ||
1605 | assert(m); | |
1606 | ||
1607 | if (m->dispatching_dbus_queue) | |
1608 | return 0; | |
1609 | ||
1610 | m->dispatching_dbus_queue = true; | |
1611 | ||
595ed347 MS |
1612 | while ((u = m->dbus_unit_queue)) { |
1613 | assert(u->in_dbus_queue); | |
c1e1601e | 1614 | |
595ed347 | 1615 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1616 | n++; |
1617 | } | |
1618 | ||
1619 | while ((j = m->dbus_job_queue)) { | |
1620 | assert(j->in_dbus_queue); | |
1621 | ||
1622 | bus_job_send_change_signal(j); | |
1623 | n++; | |
1624 | } | |
1625 | ||
1626 | m->dispatching_dbus_queue = false; | |
71445ae7 LP |
1627 | |
1628 | if (m->send_reloading_done) { | |
1629 | m->send_reloading_done = false; | |
1630 | ||
718db961 | 1631 | bus_manager_send_reloading(m, false); |
71445ae7 LP |
1632 | } |
1633 | ||
718db961 LP |
1634 | if (m->queued_message) |
1635 | bus_send_queued_message(m); | |
1636 | ||
c1e1601e | 1637 | return n; |
9152c765 LP |
1638 | } |
1639 | ||
d8fdc620 LP |
1640 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1641 | Manager *m = userdata; | |
1642 | char buf[PATH_MAX+1]; | |
1643 | ssize_t n; | |
1644 | ||
1645 | n = recv(fd, buf, sizeof(buf), 0); | |
1646 | if (n < 0) | |
1647 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
1648 | if (n == 0) { | |
1649 | log_error("Got zero-length cgroups agent message, ignoring."); | |
1650 | return 0; | |
1651 | } | |
1652 | if ((size_t) n >= sizeof(buf)) { | |
1653 | log_error("Got overly long cgroups agent message, ignoring."); | |
1654 | return 0; | |
1655 | } | |
1656 | ||
1657 | if (memchr(buf, 0, n)) { | |
1658 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
1659 | return 0; | |
1660 | } | |
1661 | buf[n] = 0; | |
1662 | ||
1663 | manager_notify_cgroup_empty(m, buf); | |
1664 | bus_forward_agent_released(m, buf); | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
8523bf7d | 1669 | static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, FDSet *fds) { |
5ba6985b LP |
1670 | _cleanup_strv_free_ char **tags = NULL; |
1671 | ||
1672 | assert(m); | |
1673 | assert(u); | |
1674 | assert(buf); | |
5ba6985b LP |
1675 | |
1676 | tags = strv_split(buf, "\n\r"); | |
1677 | if (!tags) { | |
1678 | log_oom(); | |
1679 | return; | |
1680 | } | |
1681 | ||
5ba6985b | 1682 | if (UNIT_VTABLE(u)->notify_message) |
a354329f | 1683 | UNIT_VTABLE(u)->notify_message(u, pid, tags, fds); |
a86b7675 ZJS |
1684 | else if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
1685 | _cleanup_free_ char *x = NULL, *y = NULL; | |
1686 | ||
1687 | x = cescape(buf); | |
1688 | if (x) | |
1689 | y = ellipsize(x, 20, 90); | |
1690 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); | |
1691 | } | |
5ba6985b LP |
1692 | } |
1693 | ||
718db961 | 1694 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 1695 | |
b215b0ed | 1696 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 1697 | Manager *m = userdata; |
b215b0ed DH |
1698 | char buf[NOTIFY_BUFFER_MAX+1]; |
1699 | struct iovec iovec = { | |
1700 | .iov_base = buf, | |
1701 | .iov_len = sizeof(buf)-1, | |
1702 | }; | |
1703 | union { | |
1704 | struct cmsghdr cmsghdr; | |
1705 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1706 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1707 | } control = {}; | |
1708 | struct msghdr msghdr = { | |
1709 | .msg_iov = &iovec, | |
1710 | .msg_iovlen = 1, | |
1711 | .msg_control = &control, | |
1712 | .msg_controllen = sizeof(control), | |
1713 | }; | |
1714 | ||
1715 | struct cmsghdr *cmsg; | |
1716 | struct ucred *ucred = NULL; | |
b215b0ed DH |
1717 | Unit *u1, *u2, *u3; |
1718 | int r, *fd_array = NULL; | |
1719 | unsigned n_fds = 0; | |
8c47c732 LP |
1720 | ssize_t n; |
1721 | ||
1722 | assert(m); | |
718db961 LP |
1723 | assert(m->notify_fd == fd); |
1724 | ||
1725 | if (revents != EPOLLIN) { | |
1726 | log_warning("Got unexpected poll event for notify fd."); | |
1727 | return 0; | |
1728 | } | |
8c47c732 | 1729 | |
045a3d59 | 1730 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
b215b0ed | 1731 | if (n < 0) { |
c55ae51e LP |
1732 | if (IN_SET(errno, EAGAIN, EINTR)) |
1733 | return 0; /* Spurious wakeup, try again */ | |
8c47c732 | 1734 | |
c55ae51e LP |
1735 | /* If this is any other, real error, then let's stop processing this socket. This of course means we |
1736 | * won't take notification messages anymore, but that's still better than busy looping around this: | |
1737 | * being woken up over and over again but being unable to actually read the message off the socket. */ | |
1738 | return log_error_errno(errno, "Failed to receive notification message: %m"); | |
b215b0ed | 1739 | } |
a354329f | 1740 | |
b215b0ed DH |
1741 | CMSG_FOREACH(cmsg, &msghdr) { |
1742 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 1743 | |
b215b0ed DH |
1744 | fd_array = (int*) CMSG_DATA(cmsg); |
1745 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 1746 | |
b215b0ed DH |
1747 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
1748 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1749 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 1750 | |
b215b0ed | 1751 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 1752 | } |
b215b0ed | 1753 | } |
a354329f | 1754 | |
b215b0ed DH |
1755 | if (n_fds > 0) { |
1756 | assert(fd_array); | |
a354329f | 1757 | |
b215b0ed DH |
1758 | r = fdset_new_array(&fds, fd_array, n_fds); |
1759 | if (r < 0) { | |
1760 | close_many(fd_array, n_fds); | |
9987750e FB |
1761 | log_oom(); |
1762 | return 0; | |
a354329f | 1763 | } |
b215b0ed | 1764 | } |
8c47c732 | 1765 | |
b215b0ed DH |
1766 | if (!ucred || ucred->pid <= 0) { |
1767 | log_warning("Received notify message without valid credentials. Ignoring."); | |
1768 | return 0; | |
1769 | } | |
8c47c732 | 1770 | |
045a3d59 | 1771 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
1772 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
1773 | return 0; | |
1774 | } | |
8c47c732 | 1775 | |
875ca88d LP |
1776 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
1777 | * trailing NUL byte in the message, but don't expect it. */ | |
1778 | if (n > 1 && memchr(buf, 0, n-1)) { | |
1779 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
1780 | return 0; | |
1781 | } | |
1782 | ||
1783 | /* Make sure it's NUL-terminated. */ | |
b215b0ed | 1784 | buf[n] = 0; |
8c47c732 | 1785 | |
b215b0ed DH |
1786 | /* Notify every unit that might be interested, but try |
1787 | * to avoid notifying the same one multiple times. */ | |
1788 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); | |
c4bee3c4 | 1789 | if (u1) |
8523bf7d | 1790 | manager_invoke_notify_message(m, u1, ucred->pid, buf, fds); |
5ba6985b | 1791 | |
b215b0ed | 1792 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1793 | if (u2 && u2 != u1) |
8523bf7d | 1794 | manager_invoke_notify_message(m, u2, ucred->pid, buf, fds); |
5ba6985b | 1795 | |
b215b0ed | 1796 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1797 | if (u3 && u3 != u2 && u3 != u1) |
8523bf7d | 1798 | manager_invoke_notify_message(m, u3, ucred->pid, buf, fds); |
8c47c732 | 1799 | |
c4bee3c4 | 1800 | if (!u1 && !u2 && !u3) |
b215b0ed | 1801 | log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); |
a354329f | 1802 | |
b215b0ed | 1803 | if (fdset_size(fds) > 0) |
5fd2c135 | 1804 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
1805 | |
1806 | return 0; | |
1807 | } | |
1808 | ||
96d66d89 | 1809 | static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) { |
36f20ae3 KW |
1810 | uint64_t iteration; |
1811 | ||
5ba6985b LP |
1812 | assert(m); |
1813 | assert(u); | |
1814 | assert(si); | |
1815 | ||
36f20ae3 KW |
1816 | sd_event_get_iteration(m->event, &iteration); |
1817 | ||
f2341e0a | 1818 | log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); |
5ba6985b LP |
1819 | |
1820 | unit_unwatch_pid(u, si->si_pid); | |
e57051f5 | 1821 | |
36f20ae3 | 1822 | if (UNIT_VTABLE(u)->sigchld_event) { |
ccc2c98e LN |
1823 | if (set_size(u->pids) <= 1 || |
1824 | iteration != u->sigchldgen || | |
1825 | unit_main_pid(u) == si->si_pid || | |
1826 | unit_control_pid(u) == si->si_pid) { | |
36f20ae3 KW |
1827 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); |
1828 | u->sigchldgen = iteration; | |
1829 | } else | |
1e706c8d | 1830 | log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids)); |
36f20ae3 | 1831 | } |
5ba6985b LP |
1832 | } |
1833 | ||
034c6ed7 | 1834 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1835 | assert(m); |
1836 | ||
1837 | for (;;) { | |
b92bea5d | 1838 | siginfo_t si = {}; |
9152c765 | 1839 | |
4112df16 LP |
1840 | /* First we call waitd() for a PID and do not reap the |
1841 | * zombie. That way we can still access /proc/$PID for | |
1842 | * it while it is a zombie. */ | |
1843 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1844 | |
1845 | if (errno == ECHILD) | |
1846 | break; | |
1847 | ||
4112df16 LP |
1848 | if (errno == EINTR) |
1849 | continue; | |
1850 | ||
9152c765 | 1851 | return -errno; |
acbb0225 | 1852 | } |
9152c765 | 1853 | |
4112df16 | 1854 | if (si.si_pid <= 0) |
9152c765 LP |
1855 | break; |
1856 | ||
15d5d9d9 | 1857 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
7fd1b19b | 1858 | _cleanup_free_ char *name = NULL; |
70af4d17 | 1859 | Unit *u1, *u2, *u3; |
4112df16 | 1860 | |
87d2c1ff | 1861 | get_process_comm(si.si_pid, &name); |
4112df16 | 1862 | |
5ba6985b LP |
1863 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", |
1864 | si.si_pid, strna(name), | |
1865 | sigchld_code_to_string(si.si_code), | |
1866 | si.si_status, | |
1867 | strna(si.si_code == CLD_EXITED | |
1868 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1869 | : signal_to_string(si.si_status))); | |
1870 | ||
1871 | /* And now figure out the unit this belongs | |
1872 | * to, it might be multiple... */ | |
b3ac818b | 1873 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
70af4d17 LP |
1874 | if (u1) |
1875 | invoke_sigchld_event(m, u1, &si); | |
fea72cc0 | 1876 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
1877 | if (u2 && u2 != u1) |
1878 | invoke_sigchld_event(m, u2, &si); | |
fea72cc0 | 1879 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
1880 | if (u3 && u3 != u2 && u3 != u1) |
1881 | invoke_sigchld_event(m, u3, &si); | |
5ba6985b | 1882 | } |
8c47c732 | 1883 | |
4112df16 LP |
1884 | /* And now, we actually reap the zombie. */ |
1885 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1886 | if (errno == EINTR) | |
1887 | continue; | |
1888 | ||
1889 | return -errno; | |
1890 | } | |
9152c765 LP |
1891 | } |
1892 | ||
1893 | return 0; | |
1894 | } | |
1895 | ||
7d793605 | 1896 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 1897 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 1898 | int r; |
398ef8ba | 1899 | |
f2341e0a | 1900 | log_debug("Activating special unit %s", name); |
1e001f52 | 1901 | |
4bd29fe5 | 1902 | r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL); |
bd0af849 | 1903 | if (r < 0) |
f2341e0a | 1904 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
a1b256b0 LP |
1905 | |
1906 | return r; | |
28247076 LP |
1907 | } |
1908 | ||
24dd31c1 LN |
1909 | static void manager_handle_ctrl_alt_del(Manager *m) { |
1910 | /* If the user presses C-A-D more than | |
1911 | * 7 times within 2s, we reboot/shutdown immediately, | |
1912 | * unless it was disabled in system.conf */ | |
1913 | ||
ae8c7939 | 1914 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 1915 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 LN |
1916 | else |
1917 | emergency_action(m, m->cad_burst_action, NULL, | |
1918 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); | |
24dd31c1 LN |
1919 | } |
1920 | ||
718db961 LP |
1921 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1922 | Manager *m = userdata; | |
9152c765 LP |
1923 | ssize_t n; |
1924 | struct signalfd_siginfo sfsi; | |
1925 | bool sigchld = false; | |
dacd6cee | 1926 | int r; |
9152c765 LP |
1927 | |
1928 | assert(m); | |
718db961 LP |
1929 | assert(m->signal_fd == fd); |
1930 | ||
1931 | if (revents != EPOLLIN) { | |
1932 | log_warning("Got unexpected events from signal file descriptor."); | |
1933 | return 0; | |
1934 | } | |
9152c765 LP |
1935 | |
1936 | for (;;) { | |
718db961 | 1937 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
57cb4adf | 1938 | if (n != sizeof(sfsi)) { |
8f4d6401 ZJS |
1939 | if (n >= 0) { |
1940 | log_warning("Truncated read from signal fd (%zu bytes)!", n); | |
1941 | return 0; | |
1942 | } | |
9152c765 | 1943 | |
8f4d6401 | 1944 | if (IN_SET(errno, EINTR, EAGAIN)) |
acbb0225 | 1945 | break; |
9152c765 | 1946 | |
8f4d6401 ZJS |
1947 | /* We return an error here, which will kill this handler, |
1948 | * to avoid a busy loop on read error. */ | |
1949 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
9152c765 LP |
1950 | } |
1951 | ||
4daf54a8 | 1952 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
463d0d15 | 1953 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) |
4daf54a8 ZJS |
1954 | ? LOG_DEBUG : LOG_INFO, |
1955 | &sfsi); | |
1e001f52 | 1956 | |
b9cd2ec1 LP |
1957 | switch (sfsi.ssi_signo) { |
1958 | ||
4112df16 | 1959 | case SIGCHLD: |
9152c765 | 1960 | sigchld = true; |
b9cd2ec1 LP |
1961 | break; |
1962 | ||
6632c602 | 1963 | case SIGTERM: |
463d0d15 | 1964 | if (MANAGER_IS_SYSTEM(m)) { |
db06e3b6 LP |
1965 | /* This is for compatibility with the |
1966 | * original sysvinit */ | |
e11dc4a2 | 1967 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1968 | break; |
1969 | } | |
84e9af1e | 1970 | |
a1b256b0 | 1971 | /* Fall through */ |
e11dc4a2 LP |
1972 | |
1973 | case SIGINT: | |
463d0d15 | 1974 | if (MANAGER_IS_SYSTEM(m)) { |
24dd31c1 | 1975 | manager_handle_ctrl_alt_del(m); |
84e9af1e LP |
1976 | break; |
1977 | } | |
1978 | ||
a1b256b0 | 1979 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 1980 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
1981 | m->exit_code = MANAGER_EXIT; |
1982 | return 0; | |
1983 | } | |
1984 | ||
1985 | break; | |
84e9af1e | 1986 | |
28247076 | 1987 | case SIGWINCH: |
463d0d15 | 1988 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 1989 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 1990 | |
28247076 LP |
1991 | /* This is a nop on non-init */ |
1992 | break; | |
84e9af1e | 1993 | |
28247076 | 1994 | case SIGPWR: |
463d0d15 | 1995 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 1996 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 1997 | |
28247076 | 1998 | /* This is a nop on non-init */ |
84e9af1e | 1999 | break; |
6632c602 | 2000 | |
1005d14f | 2001 | case SIGUSR1: { |
57ee42ce LP |
2002 | Unit *u; |
2003 | ||
2004 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2005 | ||
2006 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2007 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2008 | bus_init(m, true); |
57ee42ce LP |
2009 | } |
2010 | ||
2011 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2012 | log_info("Loading D-Bus service..."); | |
7d793605 | 2013 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2014 | } |
2015 | ||
2016 | break; | |
2017 | } | |
2018 | ||
2149e37c | 2019 | case SIGUSR2: { |
718db961 LP |
2020 | _cleanup_free_ char *dump = NULL; |
2021 | _cleanup_fclose_ FILE *f = NULL; | |
2149e37c LP |
2022 | size_t size; |
2023 | ||
718db961 LP |
2024 | f = open_memstream(&dump, &size); |
2025 | if (!f) { | |
dacd6cee | 2026 | log_warning_errno(errno, "Failed to allocate memory stream: %m"); |
2149e37c LP |
2027 | break; |
2028 | } | |
2029 | ||
2030 | manager_dump_units(m, f, "\t"); | |
2031 | manager_dump_jobs(m, f, "\t"); | |
2032 | ||
dacd6cee LP |
2033 | r = fflush_and_check(f); |
2034 | if (r < 0) { | |
2035 | log_warning_errno(r, "Failed to write status stream: %m"); | |
b2cdc666 DM |
2036 | break; |
2037 | } | |
2038 | ||
2149e37c | 2039 | log_dump(LOG_INFO, dump); |
1005d14f | 2040 | break; |
2149e37c | 2041 | } |
1005d14f | 2042 | |
a16e1123 LP |
2043 | case SIGHUP: |
2044 | m->exit_code = MANAGER_RELOAD; | |
2045 | break; | |
2046 | ||
7d793605 | 2047 | default: { |
253ee27a | 2048 | |
0003d1ab LP |
2049 | /* Starting SIGRTMIN+0 */ |
2050 | static const char * const target_table[] = { | |
7d793605 LP |
2051 | [0] = SPECIAL_DEFAULT_TARGET, |
2052 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 2053 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
2054 | [3] = SPECIAL_HALT_TARGET, |
2055 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
2056 | [5] = SPECIAL_REBOOT_TARGET, |
2057 | [6] = SPECIAL_KEXEC_TARGET | |
2058 | }; | |
2059 | ||
2060 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2061 | static const ManagerExitCode code_table[] = { | |
2062 | [0] = MANAGER_HALT, | |
2063 | [1] = MANAGER_POWEROFF, | |
2064 | [2] = MANAGER_REBOOT, | |
2065 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2066 | }; |
2067 | ||
2068 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 2069 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
2070 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
2071 | manager_start_target(m, target_table[idx], | |
2072 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
2073 | break; |
2074 | } | |
2075 | ||
0003d1ab LP |
2076 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2077 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2078 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2079 | break; | |
2080 | } | |
2081 | ||
0658666b LP |
2082 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2083 | ||
2084 | case 20: | |
d450b6f2 | 2085 | manager_set_show_status(m, SHOW_STATUS_YES); |
0658666b LP |
2086 | break; |
2087 | ||
2088 | case 21: | |
d450b6f2 | 2089 | manager_set_show_status(m, SHOW_STATUS_NO); |
0658666b LP |
2090 | break; |
2091 | ||
253ee27a LP |
2092 | case 22: |
2093 | log_set_max_level(LOG_DEBUG); | |
4cee3a78 | 2094 | log_info("Setting log level to debug."); |
253ee27a LP |
2095 | break; |
2096 | ||
2097 | case 23: | |
2098 | log_set_max_level(LOG_INFO); | |
4cee3a78 | 2099 | log_info("Setting log level to info."); |
253ee27a LP |
2100 | break; |
2101 | ||
600b704e | 2102 | case 24: |
463d0d15 | 2103 | if (MANAGER_IS_USER(m)) { |
600b704e LP |
2104 | m->exit_code = MANAGER_EXIT; |
2105 | return 0; | |
2106 | } | |
2107 | ||
2108 | /* This is a nop on init */ | |
2109 | break; | |
2110 | ||
4cfa2c99 | 2111 | case 26: |
c1dc6153 | 2112 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ |
4cfa2c99 LP |
2113 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); |
2114 | log_notice("Setting log target to journal-or-kmsg."); | |
2115 | break; | |
2116 | ||
253ee27a LP |
2117 | case 27: |
2118 | log_set_target(LOG_TARGET_CONSOLE); | |
2119 | log_notice("Setting log target to console."); | |
2120 | break; | |
2121 | ||
2122 | case 28: | |
2123 | log_set_target(LOG_TARGET_KMSG); | |
2124 | log_notice("Setting log target to kmsg."); | |
2125 | break; | |
2126 | ||
0658666b | 2127 | default: |
4e240ab0 | 2128 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 2129 | } |
b9cd2ec1 | 2130 | } |
7d793605 | 2131 | } |
9152c765 LP |
2132 | } |
2133 | ||
2134 | if (sigchld) | |
7b77ed8c | 2135 | manager_dispatch_sigchld(m); |
034c6ed7 LP |
2136 | |
2137 | return 0; | |
2138 | } | |
2139 | ||
718db961 LP |
2140 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2141 | Manager *m = userdata; | |
2142 | Iterator i; | |
2143 | Unit *u; | |
034c6ed7 LP |
2144 | |
2145 | assert(m); | |
718db961 | 2146 | assert(m->time_change_fd == fd); |
034c6ed7 | 2147 | |
718db961 | 2148 | log_struct(LOG_INFO, |
e2cc6eca LP |
2149 | LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), |
2150 | LOG_MESSAGE("Time has been changed"), | |
718db961 | 2151 | NULL); |
034c6ed7 | 2152 | |
718db961 LP |
2153 | /* Restart the watch */ |
2154 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
03e334a1 | 2155 | m->time_change_fd = safe_close(m->time_change_fd); |
ef734fd6 | 2156 | |
718db961 | 2157 | manager_setup_time_change(m); |
4e434314 | 2158 | |
718db961 LP |
2159 | HASHMAP_FOREACH(u, m->units, i) |
2160 | if (UNIT_VTABLE(u)->time_change) | |
2161 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2162 | |
718db961 LP |
2163 | return 0; |
2164 | } | |
ea430986 | 2165 | |
718db961 LP |
2166 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2167 | Manager *m = userdata; | |
8742514c | 2168 | |
718db961 LP |
2169 | assert(m); |
2170 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2171 | |
718db961 | 2172 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2173 | |
718db961 | 2174 | manager_close_idle_pipe(m); |
03b717a3 | 2175 | |
718db961 LP |
2176 | return 0; |
2177 | } | |
31a7eb86 | 2178 | |
718db961 LP |
2179 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2180 | Manager *m = userdata; | |
fd08a840 ZJS |
2181 | int r; |
2182 | uint64_t next; | |
31a7eb86 | 2183 | |
718db961 | 2184 | assert(m); |
fd08a840 | 2185 | assert(source); |
9152c765 | 2186 | |
718db961 | 2187 | manager_print_jobs_in_progress(m); |
fd08a840 ZJS |
2188 | |
2189 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
2190 | r = sd_event_source_set_time(source, next); | |
2191 | if (r < 0) | |
2192 | return r; | |
2193 | ||
2194 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2195 | } |
2196 | ||
2197 | int manager_loop(Manager *m) { | |
2198 | int r; | |
9152c765 | 2199 | |
fac9f8df | 2200 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2201 | |
9152c765 | 2202 | assert(m); |
f755e3b7 | 2203 | m->exit_code = MANAGER_OK; |
9152c765 | 2204 | |
fe51822e | 2205 | /* Release the path cache */ |
97044145 | 2206 | m->unit_path_cache = set_free_free(m->unit_path_cache); |
fe51822e | 2207 | |
b0c918b9 LP |
2208 | manager_check_finished(m); |
2209 | ||
a4312405 | 2210 | /* There might still be some zombies hanging around from |
f3669545 | 2211 | * before we were exec()'ed. Let's reap them. */ |
e96d6be7 LP |
2212 | r = manager_dispatch_sigchld(m); |
2213 | if (r < 0) | |
a4312405 LP |
2214 | return r; |
2215 | ||
f755e3b7 | 2216 | while (m->exit_code == MANAGER_OK) { |
718db961 | 2217 | usec_t wait_usec; |
9152c765 | 2218 | |
463d0d15 | 2219 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) |
e96d6be7 LP |
2220 | watchdog_ping(); |
2221 | ||
ea430986 LP |
2222 | if (!ratelimit_test(&rl)) { |
2223 | /* Yay, something is going seriously wrong, pause a little */ | |
2224 | log_warning("Looping too fast. Throttling execution a little."); | |
2225 | sleep(1); | |
2226 | } | |
2227 | ||
37a8e683 | 2228 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2229 | continue; |
2230 | ||
cf1265e1 | 2231 | if (manager_dispatch_gc_queue(m) > 0) |
701cc384 LP |
2232 | continue; |
2233 | ||
cf1265e1 | 2234 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2235 | continue; |
034c6ed7 | 2236 | |
cf1265e1 | 2237 | if (manager_dispatch_cgroup_queue(m) > 0) |
c1e1601e LP |
2238 | continue; |
2239 | ||
c1e1601e | 2240 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2241 | continue; |
ea430986 | 2242 | |
c757a65b | 2243 | /* Sleep for half the watchdog time */ |
463d0d15 | 2244 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { |
718db961 LP |
2245 | wait_usec = m->runtime_watchdog / 2; |
2246 | if (wait_usec <= 0) | |
2247 | wait_usec = 1; | |
c757a65b | 2248 | } else |
3a43da28 | 2249 | wait_usec = USEC_INFINITY; |
9152c765 | 2250 | |
718db961 | 2251 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2252 | if (r < 0) |
2253 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2254 | } |
957ca890 | 2255 | |
a16e1123 | 2256 | return m->exit_code; |
83c60c9f | 2257 | } |
ea430986 | 2258 | |
718db961 | 2259 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2260 | _cleanup_free_ char *n = NULL; |
4b58153d | 2261 | sd_id128_t invocation_id; |
ea430986 | 2262 | Unit *u; |
80fbf05e | 2263 | int r; |
ea430986 LP |
2264 | |
2265 | assert(m); | |
2266 | assert(s); | |
2267 | assert(_u); | |
2268 | ||
ede3a796 LP |
2269 | r = unit_name_from_dbus_path(s, &n); |
2270 | if (r < 0) | |
2271 | return r; | |
ea430986 | 2272 | |
4b58153d LP |
2273 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
2274 | * as invocation ID. */ | |
2275 | r = sd_id128_from_string(n, &invocation_id); | |
2276 | if (r >= 0) { | |
2277 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
2278 | if (u) { | |
2279 | *_u = u; | |
2280 | return 0; | |
2281 | } | |
2282 | ||
2283 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", SD_ID128_FORMAT_VAL(invocation_id)); | |
2284 | } | |
2285 | ||
2286 | /* If this didn't work, we use the suffix as unit name. */ | |
80fbf05e | 2287 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
2288 | if (r < 0) |
2289 | return r; | |
ea430986 LP |
2290 | |
2291 | *_u = u; | |
ea430986 LP |
2292 | return 0; |
2293 | } | |
86fbf370 LP |
2294 | |
2295 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 2296 | const char *p; |
86fbf370 | 2297 | unsigned id; |
718db961 | 2298 | Job *j; |
86fbf370 LP |
2299 | int r; |
2300 | ||
2301 | assert(m); | |
2302 | assert(s); | |
2303 | assert(_j); | |
2304 | ||
718db961 LP |
2305 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
2306 | if (!p) | |
86fbf370 LP |
2307 | return -EINVAL; |
2308 | ||
718db961 | 2309 | r = safe_atou(p, &id); |
8742514c | 2310 | if (r < 0) |
86fbf370 LP |
2311 | return r; |
2312 | ||
8742514c LP |
2313 | j = manager_get_job(m, id); |
2314 | if (!j) | |
86fbf370 LP |
2315 | return -ENOENT; |
2316 | ||
2317 | *_j = j; | |
2318 | ||
2319 | return 0; | |
2320 | } | |
dfcd764e | 2321 | |
4927fcae | 2322 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2323 | |
4927fcae | 2324 | #ifdef HAVE_AUDIT |
2ba11090 | 2325 | _cleanup_free_ char *p = NULL; |
0aa281df | 2326 | const char *msg; |
7410616c | 2327 | int audit_fd, r; |
e537352b | 2328 | |
463d0d15 | 2329 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
2330 | return; |
2331 | ||
c1165f82 LP |
2332 | audit_fd = get_audit_fd(); |
2333 | if (audit_fd < 0) | |
e537352b LP |
2334 | return; |
2335 | ||
bbd3a7ba LP |
2336 | /* Don't generate audit events if the service was already |
2337 | * started and we're just deserializing */ | |
2c289ea8 | 2338 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
2339 | return; |
2340 | ||
ac155bb8 | 2341 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
2342 | return; |
2343 | ||
7410616c LP |
2344 | r = unit_name_to_prefix_and_instance(u->id, &p); |
2345 | if (r < 0) { | |
2346 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
2347 | return; |
2348 | } | |
2349 | ||
63c372cb | 2350 | msg = strjoina("unit=", p); |
0aa281df LP |
2351 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
2352 | if (errno == EPERM) | |
391ade86 | 2353 | /* We aren't allowed to send audit messages? |
44785992 | 2354 | * Then let's not retry again. */ |
c1165f82 | 2355 | close_audit_fd(); |
0aa281df | 2356 | else |
56f64d95 | 2357 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 2358 | } |
4927fcae | 2359 | #endif |
e537352b | 2360 | |
e537352b LP |
2361 | } |
2362 | ||
e983b760 | 2363 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 2364 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
2365 | _cleanup_free_ char *message = NULL; |
2366 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 2367 | int n = 0; |
e983b760 LP |
2368 | |
2369 | /* Don't generate plymouth events if the service was already | |
2370 | * started and we're just deserializing */ | |
2c289ea8 | 2371 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
2372 | return; |
2373 | ||
463d0d15 | 2374 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
2375 | return; |
2376 | ||
75f86906 | 2377 | if (detect_container() > 0) |
3772995a LP |
2378 | return; |
2379 | ||
ac155bb8 MS |
2380 | if (u->type != UNIT_SERVICE && |
2381 | u->type != UNIT_MOUNT && | |
2382 | u->type != UNIT_SWAP) | |
e983b760 LP |
2383 | return; |
2384 | ||
2385 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2386 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
2387 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
2388 | if (fd < 0) { | |
56f64d95 | 2389 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
2390 | return; |
2391 | } | |
2392 | ||
fc2fffe7 | 2393 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
e983b760 | 2394 | |
2ba11090 | 2395 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) |
56f64d95 | 2396 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 2397 | return; |
e983b760 LP |
2398 | } |
2399 | ||
ac155bb8 | 2400 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 2401 | log_oom(); |
2ba11090 | 2402 | return; |
e983b760 LP |
2403 | } |
2404 | ||
2405 | errno = 0; | |
2ba11090 ZJS |
2406 | if (write(fd, message, n + 1) != n + 1) |
2407 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
56f64d95 | 2408 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
2409 | } |
2410 | ||
d8d5ab98 | 2411 | int manager_open_serialization(Manager *m, FILE **_f) { |
8e33886e | 2412 | const char *path; |
df28bc08 | 2413 | int fd = -1; |
a16e1123 LP |
2414 | FILE *f; |
2415 | ||
2416 | assert(_f); | |
2417 | ||
463d0d15 | 2418 | path = MANAGER_IS_SYSTEM(m) ? "/run/systemd" : "/tmp"; |
03532f0a | 2419 | fd = open_tmpfile_unlinkable(path, O_RDWR|O_CLOEXEC); |
d86f9d52 | 2420 | if (fd < 0) |
a16e1123 | 2421 | return -errno; |
a16e1123 | 2422 | |
a16e1123 | 2423 | log_debug("Serializing state to %s", path); |
a16e1123 | 2424 | |
01e10de3 | 2425 | f = fdopen(fd, "w+"); |
d86f9d52 | 2426 | if (!f) { |
03e334a1 | 2427 | safe_close(fd); |
a16e1123 | 2428 | return -errno; |
d86f9d52 | 2429 | } |
a16e1123 LP |
2430 | |
2431 | *_f = f; | |
2432 | ||
2433 | return 0; | |
2434 | } | |
2435 | ||
b3680f49 | 2436 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { |
a16e1123 LP |
2437 | Iterator i; |
2438 | Unit *u; | |
2439 | const char *t; | |
4a9fd066 | 2440 | char **e; |
a16e1123 LP |
2441 | int r; |
2442 | ||
2443 | assert(m); | |
2444 | assert(f); | |
2445 | assert(fds); | |
2446 | ||
313cefa1 | 2447 | m->n_reloading++; |
38c52d46 | 2448 | |
1fa2f38f | 2449 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); |
01d67b43 | 2450 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); |
33c5fae9 LP |
2451 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
2452 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 2453 | |
915b3753 | 2454 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
915b3753 | 2455 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); |
718db961 | 2456 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); |
e9ddabc2 | 2457 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 2458 | |
26a1efdf | 2459 | if (!in_initrd()) { |
915b3753 | 2460 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 | 2461 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
718db961 LP |
2462 | dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp); |
2463 | dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp); | |
2464 | dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp); | |
2465 | dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp); | |
2466 | dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp); | |
2467 | dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp); | |
f38ed060 | 2468 | } |
47a483a1 | 2469 | |
b3680f49 HH |
2470 | if (!switching_root) { |
2471 | STRV_FOREACH(e, m->environment) { | |
2472 | _cleanup_free_ char *ce; | |
4a9fd066 | 2473 | |
b3680f49 | 2474 | ce = cescape(*e); |
e3dd987c LP |
2475 | if (!ce) |
2476 | return -ENOMEM; | |
2477 | ||
2478 | fprintf(f, "env=%s\n", *e); | |
b3680f49 | 2479 | } |
4a9fd066 OS |
2480 | } |
2481 | ||
d86f9d52 LP |
2482 | if (m->notify_fd >= 0) { |
2483 | int copy; | |
2484 | ||
2485 | copy = fdset_put_dup(fds, m->notify_fd); | |
2486 | if (copy < 0) | |
2487 | return copy; | |
2488 | ||
2489 | fprintf(f, "notify-fd=%i\n", copy); | |
2490 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2491 | } | |
2492 | ||
d8fdc620 LP |
2493 | if (m->cgroups_agent_fd >= 0) { |
2494 | int copy; | |
2495 | ||
2496 | copy = fdset_put_dup(fds, m->cgroups_agent_fd); | |
2497 | if (copy < 0) | |
2498 | return copy; | |
2499 | ||
2500 | fprintf(f, "cgroups-agent-fd=%i\n", copy); | |
2501 | } | |
2502 | ||
00d9ef85 LP |
2503 | if (m->user_lookup_fds[0] >= 0) { |
2504 | int copy0, copy1; | |
2505 | ||
2506 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
2507 | if (copy0 < 0) | |
2508 | return copy0; | |
2509 | ||
2510 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
2511 | if (copy1 < 0) | |
2512 | return copy1; | |
2513 | ||
2514 | fprintf(f, "user-lookup=%i %i\n", copy0, copy1); | |
2515 | } | |
2516 | ||
05a98afd | 2517 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 2518 | |
29206d46 LP |
2519 | r = dynamic_user_serialize(m, f, fds); |
2520 | if (r < 0) | |
2521 | return r; | |
2522 | ||
00d9ef85 LP |
2523 | manager_serialize_uid_refs(m, f); |
2524 | manager_serialize_gid_refs(m, f); | |
2525 | ||
f2382a94 LP |
2526 | fputc('\n', f); |
2527 | ||
a16e1123 | 2528 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 2529 | if (u->id != t) |
a16e1123 LP |
2530 | continue; |
2531 | ||
a16e1123 | 2532 | /* Start marker */ |
ac155bb8 | 2533 | fputs(u->id, f); |
a16e1123 LP |
2534 | fputc('\n', f); |
2535 | ||
6fa48533 LP |
2536 | r = unit_serialize(u, f, fds, !switching_root); |
2537 | if (r < 0) { | |
313cefa1 | 2538 | m->n_reloading--; |
a16e1123 | 2539 | return r; |
38c52d46 | 2540 | } |
a16e1123 LP |
2541 | } |
2542 | ||
a7556052 | 2543 | assert(m->n_reloading > 0); |
313cefa1 | 2544 | m->n_reloading--; |
38c52d46 | 2545 | |
a16e1123 LP |
2546 | if (ferror(f)) |
2547 | return -EIO; | |
2548 | ||
b23de6af LP |
2549 | r = bus_fdset_add_all(m, fds); |
2550 | if (r < 0) | |
2551 | return r; | |
2552 | ||
a16e1123 LP |
2553 | return 0; |
2554 | } | |
2555 | ||
2556 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2557 | int r = 0; | |
2558 | ||
2559 | assert(m); | |
2560 | assert(f); | |
2561 | ||
2562 | log_debug("Deserializing state..."); | |
2563 | ||
313cefa1 | 2564 | m->n_reloading++; |
82c64bf5 | 2565 | |
10f8e83c | 2566 | for (;;) { |
20c03b7b | 2567 | char line[LINE_MAX], *l; |
10f8e83c LP |
2568 | |
2569 | if (!fgets(line, sizeof(line), f)) { | |
2570 | if (feof(f)) | |
2571 | r = 0; | |
2572 | else | |
2573 | r = -errno; | |
2574 | ||
2575 | goto finish; | |
2576 | } | |
2577 | ||
2578 | char_array_0(line); | |
2579 | l = strstrip(line); | |
2580 | ||
2581 | if (l[0] == 0) | |
2582 | break; | |
2583 | ||
01d67b43 LP |
2584 | if (startswith(l, "current-job-id=")) { |
2585 | uint32_t id; | |
2586 | ||
2587 | if (safe_atou32(l+15, &id) < 0) | |
e5035a27 | 2588 | log_debug("Failed to parse current job id value %s", l+15); |
01d67b43 LP |
2589 | else |
2590 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 2591 | |
33c5fae9 LP |
2592 | } else if (startswith(l, "n-installed-jobs=")) { |
2593 | uint32_t n; | |
2594 | ||
2595 | if (safe_atou32(l+17, &n) < 0) | |
e5035a27 | 2596 | log_debug("Failed to parse installed jobs counter %s", l+17); |
33c5fae9 LP |
2597 | else |
2598 | m->n_installed_jobs += n; | |
718db961 | 2599 | |
33c5fae9 LP |
2600 | } else if (startswith(l, "n-failed-jobs=")) { |
2601 | uint32_t n; | |
2602 | ||
2603 | if (safe_atou32(l+14, &n) < 0) | |
e5035a27 | 2604 | log_debug("Failed to parse failed jobs counter %s", l+14); |
33c5fae9 LP |
2605 | else |
2606 | m->n_failed_jobs += n; | |
718db961 | 2607 | |
01d67b43 LP |
2608 | } else if (startswith(l, "taint-usr=")) { |
2609 | int b; | |
2610 | ||
e3dd987c LP |
2611 | b = parse_boolean(l+10); |
2612 | if (b < 0) | |
e5035a27 | 2613 | log_debug("Failed to parse taint /usr flag %s", l+10); |
01d67b43 LP |
2614 | else |
2615 | m->taint_usr = m->taint_usr || b; | |
718db961 | 2616 | |
915b3753 LP |
2617 | } else if (startswith(l, "firmware-timestamp=")) |
2618 | dual_timestamp_deserialize(l+19, &m->firmware_timestamp); | |
2619 | else if (startswith(l, "loader-timestamp=")) | |
2620 | dual_timestamp_deserialize(l+17, &m->loader_timestamp); | |
2621 | else if (startswith(l, "kernel-timestamp=")) | |
2622 | dual_timestamp_deserialize(l+17, &m->kernel_timestamp); | |
2623 | else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 | 2624 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
915b3753 LP |
2625 | else if (startswith(l, "userspace-timestamp=")) |
2626 | dual_timestamp_deserialize(l+20, &m->userspace_timestamp); | |
10717a1a | 2627 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 2628 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
718db961 LP |
2629 | else if (startswith(l, "security-start-timestamp=")) |
2630 | dual_timestamp_deserialize(l+25, &m->security_start_timestamp); | |
2631 | else if (startswith(l, "security-finish-timestamp=")) | |
2632 | dual_timestamp_deserialize(l+26, &m->security_finish_timestamp); | |
2633 | else if (startswith(l, "generators-start-timestamp=")) | |
2634 | dual_timestamp_deserialize(l+27, &m->generators_start_timestamp); | |
2635 | else if (startswith(l, "generators-finish-timestamp=")) | |
2636 | dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp); | |
2637 | else if (startswith(l, "units-load-start-timestamp=")) | |
2638 | dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp); | |
2639 | else if (startswith(l, "units-load-finish-timestamp=")) | |
2640 | dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp); | |
4a9fd066 OS |
2641 | else if (startswith(l, "env=")) { |
2642 | _cleanup_free_ char *uce = NULL; | |
2643 | char **e; | |
2644 | ||
527b7a42 LP |
2645 | r = cunescape(l + 4, UNESCAPE_RELAX, &uce); |
2646 | if (r < 0) | |
4a9fd066 | 2647 | goto finish; |
4a9fd066 OS |
2648 | |
2649 | e = strv_env_set(m->environment, uce); | |
2650 | if (!e) { | |
2651 | r = -ENOMEM; | |
2652 | goto finish; | |
2653 | } | |
2654 | ||
2655 | strv_free(m->environment); | |
2656 | m->environment = e; | |
e3dd987c | 2657 | |
d86f9d52 LP |
2658 | } else if (startswith(l, "notify-fd=")) { |
2659 | int fd; | |
2660 | ||
2661 | if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
e5035a27 | 2662 | log_debug("Failed to parse notify fd: %s", l + 10); |
d86f9d52 | 2663 | else { |
03e334a1 LP |
2664 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
2665 | safe_close(m->notify_fd); | |
d86f9d52 LP |
2666 | m->notify_fd = fdset_remove(fds, fd); |
2667 | } | |
2668 | ||
2669 | } else if (startswith(l, "notify-socket=")) { | |
2670 | char *n; | |
2671 | ||
2672 | n = strdup(l+14); | |
2673 | if (!n) { | |
2674 | r = -ENOMEM; | |
2675 | goto finish; | |
2676 | } | |
2677 | ||
2678 | free(m->notify_socket); | |
2679 | m->notify_socket = n; | |
2680 | ||
d8fdc620 LP |
2681 | } else if (startswith(l, "cgroups-agent-fd=")) { |
2682 | int fd; | |
2683 | ||
2684 | if (safe_atoi(l + 17, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2685 | log_debug("Failed to parse cgroups agent fd: %s", l + 10); | |
2686 | else { | |
2687 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
2688 | safe_close(m->cgroups_agent_fd); | |
2689 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
2690 | } | |
2691 | ||
00d9ef85 LP |
2692 | } else if (startswith(l, "user-lookup=")) { |
2693 | int fd0, fd1; | |
2694 | ||
2695 | if (sscanf(l + 12, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) | |
2696 | log_debug("Failed to parse user lookup fd: %s", l + 12); | |
2697 | else { | |
2698 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
2699 | safe_close_pair(m->user_lookup_fds); | |
2700 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
2701 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
2702 | } | |
2703 | ||
29206d46 LP |
2704 | } else if (startswith(l, "dynamic-user=")) |
2705 | dynamic_user_deserialize_one(m, l + 13, fds); | |
00d9ef85 LP |
2706 | else if (startswith(l, "destroy-ipc-uid=")) |
2707 | manager_deserialize_uid_refs_one(m, l + 16); | |
2708 | else if (startswith(l, "destroy-ipc-gid=")) | |
2709 | manager_deserialize_gid_refs_one(m, l + 16); | |
05a98afd LP |
2710 | else if (startswith(l, "subscribed=")) { |
2711 | ||
2712 | if (strv_extend(&m->deserialized_subscribed, l+11) < 0) | |
2713 | log_oom(); | |
2714 | ||
232f6754 | 2715 | } else if (!startswith(l, "kdbus-fd=")) /* ignore this one */ |
05a98afd | 2716 | log_debug("Unknown serialization item '%s'", l); |
10f8e83c LP |
2717 | } |
2718 | ||
a16e1123 LP |
2719 | for (;;) { |
2720 | Unit *u; | |
2721 | char name[UNIT_NAME_MAX+2]; | |
2722 | ||
2723 | /* Start marker */ | |
2724 | if (!fgets(name, sizeof(name), f)) { | |
2725 | if (feof(f)) | |
10f8e83c LP |
2726 | r = 0; |
2727 | else | |
2728 | r = -errno; | |
a16e1123 | 2729 | |
82c64bf5 | 2730 | goto finish; |
a16e1123 LP |
2731 | } |
2732 | ||
2733 | char_array_0(name); | |
2734 | ||
bd0af849 ZJS |
2735 | r = manager_load_unit(m, strstrip(name), NULL, NULL, &u); |
2736 | if (r < 0) | |
82c64bf5 | 2737 | goto finish; |
a16e1123 | 2738 | |
01e10de3 LP |
2739 | r = unit_deserialize(u, f, fds); |
2740 | if (r < 0) | |
82c64bf5 | 2741 | goto finish; |
a16e1123 LP |
2742 | } |
2743 | ||
10f8e83c | 2744 | finish: |
145b1f79 | 2745 | if (ferror(f)) |
82c64bf5 | 2746 | r = -EIO; |
a16e1123 | 2747 | |
a7556052 | 2748 | assert(m->n_reloading > 0); |
313cefa1 | 2749 | m->n_reloading--; |
82c64bf5 LP |
2750 | |
2751 | return r; | |
a16e1123 LP |
2752 | } |
2753 | ||
2754 | int manager_reload(Manager *m) { | |
2755 | int r, q; | |
51d122af ZJS |
2756 | _cleanup_fclose_ FILE *f = NULL; |
2757 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
a16e1123 LP |
2758 | |
2759 | assert(m); | |
2760 | ||
07719a21 LP |
2761 | r = manager_open_serialization(m, &f); |
2762 | if (r < 0) | |
a16e1123 LP |
2763 | return r; |
2764 | ||
313cefa1 | 2765 | m->n_reloading++; |
718db961 | 2766 | bus_manager_send_reloading(m, true); |
38c52d46 | 2767 | |
07719a21 LP |
2768 | fds = fdset_new(); |
2769 | if (!fds) { | |
313cefa1 | 2770 | m->n_reloading--; |
51d122af | 2771 | return -ENOMEM; |
a16e1123 LP |
2772 | } |
2773 | ||
b3680f49 | 2774 | r = manager_serialize(m, f, fds, false); |
07719a21 | 2775 | if (r < 0) { |
313cefa1 | 2776 | m->n_reloading--; |
51d122af | 2777 | return r; |
38c52d46 | 2778 | } |
a16e1123 LP |
2779 | |
2780 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
313cefa1 | 2781 | m->n_reloading--; |
51d122af | 2782 | return -errno; |
a16e1123 LP |
2783 | } |
2784 | ||
2785 | /* From here on there is no way back. */ | |
2786 | manager_clear_jobs_and_units(m); | |
07a78643 | 2787 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 2788 | lookup_paths_free(&m->lookup_paths); |
29206d46 | 2789 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
2790 | m->uid_refs = hashmap_free(m->uid_refs); |
2791 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 2792 | |
4943d143 | 2793 | q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
2794 | if (q < 0 && r >= 0) |
2795 | r = q; | |
5a1e9937 | 2796 | |
a3c4eb07 LP |
2797 | /* Find new unit paths */ |
2798 | q = manager_run_generators(m); | |
e801700e | 2799 | if (q < 0 && r >= 0) |
07719a21 LP |
2800 | r = q; |
2801 | ||
a1453343 | 2802 | lookup_paths_reduce(&m->lookup_paths); |
5a1e9937 LP |
2803 | manager_build_unit_path_cache(m); |
2804 | ||
a16e1123 | 2805 | /* First, enumerate what we can from all config files */ |
ba64af90 | 2806 | manager_enumerate(m); |
a16e1123 LP |
2807 | |
2808 | /* Second, deserialize our stored data */ | |
07719a21 | 2809 | q = manager_deserialize(m, f, fds); |
e801700e | 2810 | if (q < 0 && r >= 0) |
a16e1123 LP |
2811 | r = q; |
2812 | ||
2813 | fclose(f); | |
2814 | f = NULL; | |
2815 | ||
a2cc4a6c ZJS |
2816 | /* Re-register notify_fd as event source */ |
2817 | q = manager_setup_notify(m); | |
e801700e | 2818 | if (q < 0 && r >= 0) |
a2cc4a6c ZJS |
2819 | r = q; |
2820 | ||
d8fdc620 LP |
2821 | q = manager_setup_cgroups_agent(m); |
2822 | if (q < 0 && r >= 0) | |
2823 | r = q; | |
2824 | ||
00d9ef85 LP |
2825 | q = manager_setup_user_lookup_fd(m); |
2826 | if (q < 0 && r >= 0) | |
2827 | r = q; | |
2828 | ||
a16e1123 | 2829 | /* Third, fire things up! */ |
007c6337 | 2830 | manager_coldplug(m); |
a16e1123 | 2831 | |
29206d46 LP |
2832 | /* Release any dynamic users no longer referenced */ |
2833 | dynamic_user_vacuum(m, true); | |
2834 | ||
00d9ef85 LP |
2835 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
2836 | manager_vacuum_uid_refs(m); | |
2837 | manager_vacuum_gid_refs(m); | |
2838 | ||
8936a5e3 DM |
2839 | /* Sync current state of bus names with our set of listening units */ |
2840 | if (m->api_bus) | |
2841 | manager_sync_bus_names(m, m->api_bus); | |
2842 | ||
a7556052 LP |
2843 | assert(m->n_reloading > 0); |
2844 | m->n_reloading--; | |
9f611ad8 | 2845 | |
71445ae7 LP |
2846 | m->send_reloading_done = true; |
2847 | ||
a16e1123 LP |
2848 | return r; |
2849 | } | |
2850 | ||
fdf20a31 | 2851 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2852 | Unit *u; |
2853 | Iterator i; | |
2854 | ||
2855 | assert(m); | |
2856 | ||
2857 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2858 | unit_reset_failed(u); |
5632e374 LP |
2859 | } |
2860 | ||
31afa0a4 | 2861 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
2862 | Unit *u; |
2863 | ||
2864 | assert(m); | |
2865 | assert(name); | |
2866 | ||
2867 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
2868 | u = manager_get_unit(m, name); |
2869 | if (!u) | |
8f6df3fa LP |
2870 | return true; |
2871 | ||
31afa0a4 | 2872 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
2873 | } |
2874 | ||
56dacdbc | 2875 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 2876 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 2877 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 2878 | |
56dacdbc | 2879 | if (m->test_run) |
b0c918b9 LP |
2880 | return; |
2881 | ||
463d0d15 | 2882 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
e03ae661 | 2883 | |
915b3753 LP |
2884 | /* Note that m->kernel_usec.monotonic is always at 0, |
2885 | * and m->firmware_usec.monotonic and | |
2886 | * m->loader_usec.monotonic should be considered | |
2887 | * negative values. */ | |
2888 | ||
7ceba241 LP |
2889 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
2890 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 2891 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 2892 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 2893 | |
e9ddabc2 | 2894 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 2895 | |
915b3753 LP |
2896 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
2897 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 2898 | |
e12919e8 | 2899 | log_struct(LOG_INFO, |
e2cc6eca | 2900 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 LP |
2901 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
2902 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
2903 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
e2cc6eca LP |
2904 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
2905 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2906 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
2907 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2908 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 2909 | NULL); |
18fa6b27 | 2910 | } else { |
915b3753 | 2911 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
2912 | initrd_usec = 0; |
2913 | ||
81270860 | 2914 | log_struct(LOG_INFO, |
e2cc6eca | 2915 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 | 2916 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 2917 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
2918 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.", |
2919 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2920 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2921 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
81270860 | 2922 | NULL); |
e12919e8 LP |
2923 | } |
2924 | } else { | |
2925 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; | |
2926 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
2927 | ||
2928 | log_struct(LOG_INFO, | |
e2cc6eca | 2929 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
e12919e8 | 2930 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
2931 | LOG_MESSAGE("Startup finished in %s.", |
2932 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 2933 | NULL); |
18fa6b27 | 2934 | } |
b0c918b9 | 2935 | |
718db961 | 2936 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2937 | |
2938 | sd_notifyf(false, | |
af4ec430 LP |
2939 | "READY=1\n" |
2940 | "STATUS=Startup finished in %s.", | |
2fa4092c | 2941 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
b0c918b9 LP |
2942 | } |
2943 | ||
56dacdbc | 2944 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
2945 | assert(m); |
2946 | ||
2c289ea8 | 2947 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
2948 | return; |
2949 | ||
9771b62d LP |
2950 | /* Verify that we are actually running currently. Initially |
2951 | * the exit code is set to invalid, and during operation it is | |
2952 | * then set to MANAGER_OK */ | |
2953 | if (m->exit_code != MANAGER_OK) | |
2954 | return; | |
2955 | ||
56dacdbc | 2956 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 2957 | if (m->jobs_in_progress_event_source) |
2ae56591 | 2958 | /* Ignore any failure, this is only for feedback */ |
e7ab4d1a | 2959 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); |
56dacdbc ZJS |
2960 | |
2961 | return; | |
2962 | } | |
2963 | ||
2964 | manager_flip_auto_status(m, false); | |
2965 | ||
2966 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
2967 | manager_close_idle_pipe(m); |
2968 | ||
2969 | /* Turn off confirm spawn now */ | |
2970 | m->confirm_spawn = false; | |
2971 | ||
2972 | /* No need to update ask password status when we're going non-interactive */ | |
2973 | manager_close_ask_password(m); | |
2974 | ||
2975 | /* This is no longer the first boot */ | |
2976 | manager_set_first_boot(m, false); | |
2977 | ||
2978 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
2979 | return; | |
2980 | ||
2981 | dual_timestamp_get(&m->finish_timestamp); | |
2982 | ||
2983 | manager_notify_finished(m); | |
2984 | ||
e7ab4d1a | 2985 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
2986 | } |
2987 | ||
e801700e | 2988 | static int manager_run_generators(Manager *m) { |
f42348ac | 2989 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 2990 | const char *argv[5]; |
e801700e | 2991 | char **path; |
07719a21 | 2992 | int r; |
5a1e9937 LP |
2993 | |
2994 | assert(m); | |
2995 | ||
0d8c31ff | 2996 | if (m->test_run) |
e801700e | 2997 | return 0; |
0d8c31ff | 2998 | |
9183df70 | 2999 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3000 | if (!paths) |
3001 | return log_oom(); | |
5a1e9937 | 3002 | |
49681057 ZJS |
3003 | /* Optimize by skipping the whole process by not creating output directories |
3004 | * if no generators are found. */ | |
e801700e | 3005 | STRV_FOREACH(path, paths) { |
a3c4eb07 | 3006 | if (access(*path, F_OK) >= 0) |
e801700e | 3007 | goto found; |
49681057 | 3008 | if (errno != ENOENT) |
e801700e | 3009 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); |
5a1e9937 | 3010 | } |
a3c4eb07 | 3011 | |
e801700e | 3012 | return 0; |
5a1e9937 | 3013 | |
e801700e | 3014 | found: |
cd64fd56 | 3015 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
07719a21 LP |
3016 | if (r < 0) |
3017 | goto finish; | |
5a1e9937 | 3018 | |
83cc030f | 3019 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3020 | argv[1] = m->lookup_paths.generator; |
3021 | argv[2] = m->lookup_paths.generator_early; | |
3022 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3023 | argv[4] = NULL; |
5a1e9937 | 3024 | |
718db961 | 3025 | RUN_WITH_UMASK(0022) |
e801700e | 3026 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv); |
5a1e9937 | 3027 | |
718db961 | 3028 | finish: |
cd64fd56 | 3029 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3030 | return r; |
5a1e9937 LP |
3031 | } |
3032 | ||
718db961 LP |
3033 | int manager_environment_add(Manager *m, char **minus, char **plus) { |
3034 | char **a = NULL, **b = NULL, **l; | |
97d0e5f8 | 3035 | assert(m); |
bcd8e6d1 | 3036 | |
718db961 | 3037 | l = m->environment; |
bcd8e6d1 | 3038 | |
718db961 LP |
3039 | if (!strv_isempty(minus)) { |
3040 | a = strv_env_delete(l, 1, minus); | |
3041 | if (!a) | |
3042 | return -ENOMEM; | |
3043 | ||
3044 | l = a; | |
3045 | } | |
3046 | ||
3047 | if (!strv_isempty(plus)) { | |
3048 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
3049 | if (!b) { |
3050 | strv_free(a); | |
718db961 | 3051 | return -ENOMEM; |
aa9f8a30 | 3052 | } |
bcd8e6d1 | 3053 | |
718db961 LP |
3054 | l = b; |
3055 | } | |
3056 | ||
3057 | if (m->environment != l) | |
3058 | strv_free(m->environment); | |
3059 | if (a != l) | |
3060 | strv_free(a); | |
3061 | if (b != l) | |
3062 | strv_free(b); | |
3063 | ||
f069efb4 LP |
3064 | m->environment = l; |
3065 | manager_clean_environment(m); | |
3066 | strv_sort(m->environment); | |
3067 | ||
97d0e5f8 UTL |
3068 | return 0; |
3069 | } | |
3070 | ||
c93ff2e9 FC |
3071 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
3072 | int i; | |
3073 | ||
3074 | assert(m); | |
3075 | ||
517d56b1 | 3076 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3077 | m->rlimit[i] = mfree(m->rlimit[i]); |
3078 | ||
07719a21 LP |
3079 | if (!default_rlimit[i]) |
3080 | continue; | |
c93ff2e9 | 3081 | |
07719a21 LP |
3082 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3083 | if (!m->rlimit[i]) | |
3ce40911 | 3084 | return log_oom(); |
c93ff2e9 FC |
3085 | } |
3086 | ||
3087 | return 0; | |
3088 | } | |
3089 | ||
4cfa2c99 | 3090 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
3091 | Unit *u; |
3092 | ||
3093 | assert(m); | |
3094 | ||
463d0d15 | 3095 | if (!MANAGER_IS_SYSTEM(m)) |
f1dd0c3f LP |
3096 | return; |
3097 | ||
731a676c LP |
3098 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
3099 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 3100 | log_close_journal(); |
731a676c | 3101 | return; |
f1dd0c3f LP |
3102 | } |
3103 | ||
731a676c LP |
3104 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
3105 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 3106 | log_close_journal(); |
731a676c LP |
3107 | return; |
3108 | } | |
f1dd0c3f | 3109 | |
731a676c LP |
3110 | /* Hmm, OK, so the socket is fully up and the service is up |
3111 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
3112 | log_open(); |
3113 | } | |
3114 | ||
d450b6f2 | 3115 | void manager_set_show_status(Manager *m, ShowStatus mode) { |
27d340c7 | 3116 | assert(m); |
d450b6f2 | 3117 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); |
27d340c7 | 3118 | |
463d0d15 | 3119 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3120 | return; |
3121 | ||
76b6f3f6 ZJS |
3122 | if (m->show_status != mode) |
3123 | log_debug("%s showing of status.", | |
3124 | mode == SHOW_STATUS_NO ? "Disabling" : "Enabling"); | |
d450b6f2 | 3125 | m->show_status = mode; |
27d340c7 | 3126 | |
d450b6f2 | 3127 | if (mode > 0) |
ac5b0c13 | 3128 | (void) touch("/run/systemd/show-status"); |
27d340c7 | 3129 | else |
ac5b0c13 | 3130 | (void) unlink("/run/systemd/show-status"); |
27d340c7 LP |
3131 | } |
3132 | ||
127d5fd1 | 3133 | static bool manager_get_show_status(Manager *m, StatusType type) { |
27d340c7 LP |
3134 | assert(m); |
3135 | ||
463d0d15 | 3136 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3137 | return false; |
3138 | ||
31a7eb86 ZJS |
3139 | if (m->no_console_output) |
3140 | return false; | |
3141 | ||
d81afec1 | 3142 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) |
08510627 LP |
3143 | return false; |
3144 | ||
e46b13c8 | 3145 | /* If we cannot find out the status properly, just proceed. */ |
ebc5788e | 3146 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) |
e46b13c8 ZJS |
3147 | return false; |
3148 | ||
d450b6f2 | 3149 | if (m->show_status > 0) |
27d340c7 LP |
3150 | return true; |
3151 | ||
031886ed | 3152 | return false; |
27d340c7 | 3153 | } |
68b29a9f | 3154 | |
e2680723 LP |
3155 | void manager_set_first_boot(Manager *m, bool b) { |
3156 | assert(m); | |
3157 | ||
463d0d15 | 3158 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3159 | return; |
3160 | ||
ae2a2c53 LP |
3161 | if (m->first_boot != (int) b) { |
3162 | if (b) | |
3163 | (void) touch("/run/systemd/first-boot"); | |
3164 | else | |
3165 | (void) unlink("/run/systemd/first-boot"); | |
3166 | } | |
e2680723 | 3167 | |
ae2a2c53 | 3168 | m->first_boot = b; |
e2680723 LP |
3169 | } |
3170 | ||
127d5fd1 | 3171 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
3172 | va_list ap; |
3173 | ||
cb6531be ZJS |
3174 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
3175 | ||
3176 | if (m && !manager_get_show_status(m, type)) | |
25cee550 MS |
3177 | return; |
3178 | ||
03b717a3 MS |
3179 | /* XXX We should totally drop the check for ephemeral here |
3180 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 3181 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
3182 | return; |
3183 | ||
25cee550 | 3184 | va_start(ap, format); |
127d5fd1 | 3185 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); |
25cee550 MS |
3186 | va_end(ap); |
3187 | } | |
3188 | ||
a57f7e2c LP |
3189 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
3190 | char p[strlen(path)+1]; | |
3191 | ||
3192 | assert(m); | |
3193 | assert(path); | |
3194 | ||
3195 | strcpy(p, path); | |
3196 | path_kill_slashes(p); | |
3197 | ||
3198 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3199 | } | |
e66cf1a3 LP |
3200 | |
3201 | const char *manager_get_runtime_prefix(Manager *m) { | |
f755e3b7 | 3202 | assert(m); |
e66cf1a3 | 3203 | |
463d0d15 | 3204 | return MANAGER_IS_SYSTEM(m) ? |
e66cf1a3 LP |
3205 | "/run" : |
3206 | getenv("XDG_RUNTIME_DIR"); | |
3207 | } | |
f755e3b7 | 3208 | |
5269eb6b | 3209 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 3210 | unsigned size; |
5269eb6b | 3211 | int r; |
03455c28 LDM |
3212 | |
3213 | assert(m); | |
3214 | assert(u->manager == m); | |
3215 | ||
3216 | size = set_size(m->failed_units); | |
3217 | ||
9fff8981 | 3218 | if (failed) { |
5269eb6b LP |
3219 | r = set_ensure_allocated(&m->failed_units, NULL); |
3220 | if (r < 0) | |
3221 | return log_oom(); | |
3222 | ||
9fff8981 | 3223 | if (set_put(m->failed_units, u) < 0) |
5269eb6b | 3224 | return log_oom(); |
9fff8981 | 3225 | } else |
5269eb6b | 3226 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
3227 | |
3228 | if (set_size(m->failed_units) != size) | |
3229 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
3230 | |
3231 | return 0; | |
03455c28 LDM |
3232 | } |
3233 | ||
f755e3b7 LP |
3234 | ManagerState manager_state(Manager *m) { |
3235 | Unit *u; | |
3236 | ||
3237 | assert(m); | |
3238 | ||
3239 | /* Did we ever finish booting? If not then we are still starting up */ | |
d81afec1 LP |
3240 | if (!dual_timestamp_is_set(&m->finish_timestamp)) { |
3241 | ||
3242 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3243 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3244 | return MANAGER_INITIALIZING; | |
3245 | ||
f755e3b7 | 3246 | return MANAGER_STARTING; |
d81afec1 | 3247 | } |
f755e3b7 LP |
3248 | |
3249 | /* Is the special shutdown target queued? If so, we are in shutdown state */ | |
3250 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
f0469b8c | 3251 | if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)) |
f755e3b7 LP |
3252 | return MANAGER_STOPPING; |
3253 | ||
3254 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3255 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3256 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3257 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3258 | return MANAGER_MAINTENANCE; |
3259 | ||
3260 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); | |
3261 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3262 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3263 | return MANAGER_MAINTENANCE; |
3264 | ||
3265 | /* Are there any failed units? If so, we are in degraded mode */ | |
3266 | if (set_size(m->failed_units) > 0) | |
3267 | return MANAGER_DEGRADED; | |
3268 | ||
3269 | return MANAGER_RUNNING; | |
3270 | } | |
3271 | ||
00d9ef85 LP |
3272 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3273 | ||
3274 | static void manager_unref_uid_internal( | |
3275 | Manager *m, | |
3276 | Hashmap **uid_refs, | |
3277 | uid_t uid, | |
3278 | bool destroy_now, | |
3279 | int (*_clean_ipc)(uid_t uid)) { | |
3280 | ||
3281 | uint32_t c, n; | |
3282 | ||
3283 | assert(m); | |
3284 | assert(uid_refs); | |
3285 | assert(uid_is_valid(uid)); | |
3286 | assert(_clean_ipc); | |
3287 | ||
3288 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
3289 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
3290 | * | |
3291 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
3292 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
3293 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
3294 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
3295 | ||
3296 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3297 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3298 | ||
3299 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3300 | return; | |
3301 | ||
3302 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3303 | ||
3304 | n = c & ~DESTROY_IPC_FLAG; | |
3305 | assert(n > 0); | |
3306 | n--; | |
3307 | ||
3308 | if (destroy_now && n == 0) { | |
3309 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
3310 | ||
3311 | if (c & DESTROY_IPC_FLAG) { | |
3312 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
3313 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3314 | uid); | |
3315 | (void) _clean_ipc(uid); | |
3316 | } | |
3317 | } else { | |
3318 | c = n | (c & DESTROY_IPC_FLAG); | |
3319 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
3320 | } | |
3321 | } | |
3322 | ||
3323 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
3324 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
3325 | } | |
3326 | ||
3327 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
3328 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
3329 | } | |
3330 | ||
3331 | static int manager_ref_uid_internal( | |
3332 | Manager *m, | |
3333 | Hashmap **uid_refs, | |
3334 | uid_t uid, | |
3335 | bool clean_ipc) { | |
3336 | ||
3337 | uint32_t c, n; | |
3338 | int r; | |
3339 | ||
3340 | assert(m); | |
3341 | assert(uid_refs); | |
3342 | assert(uid_is_valid(uid)); | |
3343 | ||
3344 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
3345 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
3346 | ||
3347 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3348 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3349 | ||
3350 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3351 | return 0; | |
3352 | ||
3353 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3354 | if (r < 0) | |
3355 | return r; | |
3356 | ||
3357 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3358 | ||
3359 | n = c & ~DESTROY_IPC_FLAG; | |
3360 | n++; | |
3361 | ||
3362 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
3363 | return -EOVERFLOW; | |
3364 | ||
3365 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
3366 | ||
3367 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3368 | } | |
3369 | ||
3370 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
3371 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
3372 | } | |
3373 | ||
3374 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
3375 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
3376 | } | |
3377 | ||
3378 | static void manager_vacuum_uid_refs_internal( | |
3379 | Manager *m, | |
3380 | Hashmap **uid_refs, | |
3381 | int (*_clean_ipc)(uid_t uid)) { | |
3382 | ||
3383 | Iterator i; | |
3384 | void *p, *k; | |
3385 | ||
3386 | assert(m); | |
3387 | assert(uid_refs); | |
3388 | assert(_clean_ipc); | |
3389 | ||
3390 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3391 | uint32_t c, n; | |
3392 | uid_t uid; | |
3393 | ||
3394 | uid = PTR_TO_UID(k); | |
3395 | c = PTR_TO_UINT32(p); | |
3396 | ||
3397 | n = c & ~DESTROY_IPC_FLAG; | |
3398 | if (n > 0) | |
3399 | continue; | |
3400 | ||
3401 | if (c & DESTROY_IPC_FLAG) { | |
3402 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
3403 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3404 | uid); | |
3405 | (void) _clean_ipc(uid); | |
3406 | } | |
3407 | ||
3408 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
3409 | } | |
3410 | } | |
3411 | ||
3412 | void manager_vacuum_uid_refs(Manager *m) { | |
3413 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); | |
3414 | } | |
3415 | ||
3416 | void manager_vacuum_gid_refs(Manager *m) { | |
3417 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); | |
3418 | } | |
3419 | ||
3420 | static void manager_serialize_uid_refs_internal( | |
3421 | Manager *m, | |
3422 | FILE *f, | |
3423 | Hashmap **uid_refs, | |
3424 | const char *field_name) { | |
3425 | ||
3426 | Iterator i; | |
3427 | void *p, *k; | |
3428 | ||
3429 | assert(m); | |
3430 | assert(f); | |
3431 | assert(uid_refs); | |
3432 | assert(field_name); | |
3433 | ||
3434 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter | |
3435 | * of it is better rebuild after a reload/reexec. */ | |
3436 | ||
3437 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3438 | uint32_t c; | |
3439 | uid_t uid; | |
3440 | ||
3441 | uid = PTR_TO_UID(k); | |
3442 | c = PTR_TO_UINT32(p); | |
3443 | ||
3444 | if (!(c & DESTROY_IPC_FLAG)) | |
3445 | continue; | |
3446 | ||
3447 | fprintf(f, "%s=" UID_FMT "\n", field_name, uid); | |
3448 | } | |
3449 | } | |
3450 | ||
3451 | void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3452 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3453 | } | |
3454 | ||
3455 | void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3456 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3457 | } | |
3458 | ||
3459 | static void manager_deserialize_uid_refs_one_internal( | |
3460 | Manager *m, | |
3461 | Hashmap** uid_refs, | |
3462 | const char *value) { | |
3463 | ||
3464 | uid_t uid; | |
3465 | uint32_t c; | |
3466 | int r; | |
3467 | ||
3468 | assert(m); | |
3469 | assert(uid_refs); | |
3470 | assert(value); | |
3471 | ||
3472 | r = parse_uid(value, &uid); | |
3473 | if (r < 0 || uid == 0) { | |
3474 | log_debug("Unable to parse UID reference serialization"); | |
3475 | return; | |
3476 | } | |
3477 | ||
3478 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3479 | if (r < 0) { | |
3480 | log_oom(); | |
3481 | return; | |
3482 | } | |
3483 | ||
3484 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3485 | if (c & DESTROY_IPC_FLAG) | |
3486 | return; | |
3487 | ||
3488 | c |= DESTROY_IPC_FLAG; | |
3489 | ||
3490 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3491 | if (r < 0) { | |
3492 | log_debug("Failed to add UID reference entry"); | |
3493 | return; | |
3494 | } | |
3495 | } | |
3496 | ||
3497 | void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3498 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3499 | } | |
3500 | ||
3501 | void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3502 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3503 | } | |
3504 | ||
3505 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
3506 | struct buffer { | |
3507 | uid_t uid; | |
3508 | gid_t gid; | |
3509 | char unit_name[UNIT_NAME_MAX+1]; | |
3510 | } _packed_ buffer; | |
3511 | ||
3512 | Manager *m = userdata; | |
3513 | ssize_t l; | |
3514 | size_t n; | |
3515 | Unit *u; | |
3516 | ||
3517 | assert_se(source); | |
3518 | assert_se(m); | |
3519 | ||
3520 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
3521 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
3522 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
3523 | ||
3524 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
3525 | if (l < 0) { | |
3526 | if (errno == EINTR || errno == EAGAIN) | |
3527 | return 0; | |
3528 | ||
3529 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
3530 | } | |
3531 | ||
3532 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
3533 | log_warning("Received too short user lookup message, ignoring."); | |
3534 | return 0; | |
3535 | } | |
3536 | ||
3537 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
3538 | log_warning("Received too long user lookup message, ignoring."); | |
3539 | return 0; | |
3540 | } | |
3541 | ||
3542 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
3543 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
3544 | return 0; | |
3545 | } | |
3546 | ||
3547 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
3548 | if (memchr(buffer.unit_name, 0, n)) { | |
3549 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
3550 | return 0; | |
3551 | } | |
3552 | ||
3553 | buffer.unit_name[n] = 0; | |
3554 | u = manager_get_unit(m, buffer.unit_name); | |
3555 | if (!u) { | |
3556 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
3557 | return 0; | |
3558 | } | |
3559 | ||
3560 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
3561 | ||
3562 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
3563 | return 0; | |
3564 | } | |
3565 | ||
f755e3b7 | 3566 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 3567 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
3568 | [MANAGER_STARTING] = "starting", |
3569 | [MANAGER_RUNNING] = "running", | |
3570 | [MANAGER_DEGRADED] = "degraded", | |
3571 | [MANAGER_MAINTENANCE] = "maintenance", | |
3572 | [MANAGER_STOPPING] = "stopping", | |
3573 | }; | |
3574 | ||
3575 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); |