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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
a7334b09 | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
60918275 | 21 | #include <errno.h> |
400f1a33 LP |
22 | #include <fcntl.h> |
23 | #include <linux/kd.h> | |
9152c765 | 24 | #include <signal.h> |
713f6f90 | 25 | #include <stdio_ext.h> |
400f1a33 | 26 | #include <string.h> |
e46b13c8 | 27 | #include <sys/epoll.h> |
400f1a33 | 28 | #include <sys/inotify.h> |
e1414003 | 29 | #include <sys/ioctl.h> |
400f1a33 | 30 | #include <sys/reboot.h> |
8742514c | 31 | #include <sys/timerfd.h> |
400f1a33 LP |
32 | #include <sys/wait.h> |
33 | #include <unistd.h> | |
830f6caa | 34 | |
349cc4a5 | 35 | #if HAVE_AUDIT |
4927fcae | 36 | #include <libaudit.h> |
830f6caa | 37 | #endif |
60918275 | 38 | |
718db961 | 39 | #include "sd-daemon.h" |
718db961 | 40 | #include "sd-messages.h" |
3536f49e | 41 | #include "sd-path.h" |
81527be1 | 42 | |
b5efdb8a | 43 | #include "alloc-util.h" |
400f1a33 LP |
44 | #include "audit-fd.h" |
45 | #include "boot-timestamps.h" | |
46 | #include "bus-common-errors.h" | |
47 | #include "bus-error.h" | |
48 | #include "bus-kernel.h" | |
49 | #include "bus-util.h" | |
00d9ef85 | 50 | #include "clean-ipc.h" |
af6b0ecc | 51 | #include "clock-util.h" |
400f1a33 LP |
52 | #include "dbus-job.h" |
53 | #include "dbus-manager.h" | |
54 | #include "dbus-unit.h" | |
55 | #include "dbus.h" | |
d063a527 | 56 | #include "dirent-util.h" |
400f1a33 | 57 | #include "env-util.h" |
4f5dd394 | 58 | #include "escape.h" |
89711996 | 59 | #include "exec-util.h" |
d3070fbd | 60 | #include "execute.h" |
400f1a33 | 61 | #include "exit-status.h" |
3ffd4af2 | 62 | #include "fd-util.h" |
0d39fa9c | 63 | #include "fileio.h" |
f4f15635 | 64 | #include "fs-util.h" |
60918275 | 65 | #include "hashmap.h" |
c004493c | 66 | #include "io-util.h" |
d3070fbd | 67 | #include "label.h" |
400f1a33 | 68 | #include "locale-setup.h" |
16354eff | 69 | #include "log.h" |
400f1a33 | 70 | #include "macro.h" |
3ffd4af2 | 71 | #include "manager.h" |
400f1a33 | 72 | #include "missing.h" |
49e942b2 | 73 | #include "mkdir.h" |
6bedfcbb | 74 | #include "parse-util.h" |
400f1a33 LP |
75 | #include "path-lookup.h" |
76 | #include "path-util.h" | |
77 | #include "process-util.h" | |
ea430986 | 78 | #include "ratelimit.h" |
c6878637 | 79 | #include "rm-rf.h" |
400f1a33 | 80 | #include "signal-util.h" |
514f4ef5 | 81 | #include "special.h" |
8fcde012 | 82 | #include "stat-util.h" |
8b43440b | 83 | #include "string-table.h" |
07630cea | 84 | #include "string-util.h" |
400f1a33 | 85 | #include "strv.h" |
dd1db3c2 | 86 | #include "strxcpyx.h" |
400f1a33 LP |
87 | #include "terminal-util.h" |
88 | #include "time-util.h" | |
89 | #include "transaction.h" | |
affb60b1 | 90 | #include "umask-util.h" |
400f1a33 | 91 | #include "unit-name.h" |
00d9ef85 | 92 | #include "user-util.h" |
400f1a33 | 93 | #include "util.h" |
5dc4c17f | 94 | #include "virt.h" |
e96d6be7 | 95 | #include "watchdog.h" |
60918275 | 96 | |
a47806fa | 97 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 98 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 99 | |
03b717a3 | 100 | /* Initial delay and the interval for printing status messages about running jobs */ |
fd08a840 ZJS |
101 | #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) |
102 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) | |
03b717a3 MS |
103 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
104 | ||
718db961 | 105 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 106 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
107 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
108 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
109 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 110 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 111 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 112 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
575b300b | 113 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata); |
64691d20 | 114 | static int manager_run_environment_generators(Manager *m); |
e801700e | 115 | static int manager_run_generators(Manager *m); |
718db961 | 116 | |
2ae56591 | 117 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 118 | usec_t next; |
cfa9677b | 119 | int r; |
e5723c89 | 120 | |
718db961 | 121 | assert(m); |
03b717a3 | 122 | |
42bf1ae1 FB |
123 | /* We do not want to show the cylon animation if the user |
124 | * needs to confirm service executions otherwise confirmation | |
125 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 126 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
127 | return; |
128 | ||
718db961 | 129 | if (m->jobs_in_progress_event_source) |
2ae56591 | 130 | return; |
03b717a3 | 131 | |
e5723c89 | 132 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; |
cfa9677b | 133 | r = sd_event_add_time( |
6a0f1f6d LP |
134 | m->event, |
135 | &m->jobs_in_progress_event_source, | |
136 | CLOCK_MONOTONIC, | |
137 | next, 0, | |
138 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
139 | if (r < 0) |
140 | return; | |
7dfbe2e3 TG |
141 | |
142 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
143 | } |
144 | ||
fbd0b64f | 145 | #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL)) |
03b717a3 | 146 | |
03b717a3 MS |
147 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
148 | char *p = buffer; | |
149 | ||
150 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
151 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
152 | ||
153 | if (pos > 1) { | |
6282c859 MS |
154 | if (pos > 2) |
155 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
156 | if (log_get_show_color()) |
157 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
158 | *p++ = '*'; |
159 | } | |
160 | ||
161 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
162 | if (log_get_show_color()) |
163 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
164 | *p++ = '*'; |
165 | } | |
166 | ||
64c3610b FB |
167 | if (log_get_show_color()) |
168 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
169 | |
170 | if (pos < width) { | |
64c3610b FB |
171 | if (log_get_show_color()) |
172 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 173 | *p++ = '*'; |
6282c859 MS |
174 | if (pos < width-1) |
175 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
176 | if (log_get_show_color()) |
177 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 178 | } |
03b717a3 MS |
179 | } |
180 | ||
cb8ccb22 | 181 | void manager_flip_auto_status(Manager *m, bool enable) { |
f755e3b7 LP |
182 | assert(m); |
183 | ||
cb8ccb22 ZJS |
184 | if (enable) { |
185 | if (m->show_status == SHOW_STATUS_AUTO) | |
186 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY); | |
187 | } else { | |
188 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
189 | manager_set_show_status(m, SHOW_STATUS_AUTO); | |
190 | } | |
191 | } | |
192 | ||
03b717a3 | 193 | static void manager_print_jobs_in_progress(Manager *m) { |
718db961 | 194 | _cleanup_free_ char *job_of_n = NULL; |
03b717a3 MS |
195 | Iterator i; |
196 | Job *j; | |
03b717a3 MS |
197 | unsigned counter = 0, print_nr; |
198 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
199 | unsigned cylon_pos; | |
8bb310c3 ZJS |
200 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
201 | uint64_t x; | |
03b717a3 | 202 | |
718db961 | 203 | assert(m); |
9c3349e2 | 204 | assert(m->n_running_jobs > 0); |
718db961 | 205 | |
cb8ccb22 | 206 | manager_flip_auto_status(m, true); |
d450b6f2 | 207 | |
03b717a3 MS |
208 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
209 | ||
210 | HASHMAP_FOREACH(j, m->jobs, i) | |
211 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
212 | break; | |
213 | ||
e970a72e MS |
214 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
215 | * so the above loop must have succeeded in finding j. */ | |
216 | assert(counter == print_nr + 1); | |
51d122af | 217 | assert(j); |
5a82a91a | 218 | |
03b717a3 MS |
219 | cylon_pos = m->jobs_in_progress_iteration % 14; |
220 | if (cylon_pos >= 8) | |
221 | cylon_pos = 14 - cylon_pos; | |
222 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
223 | ||
8bb310c3 ZJS |
224 | m->jobs_in_progress_iteration++; |
225 | ||
d6483ba7 ZJS |
226 | if (m->n_running_jobs > 1) { |
227 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
228 | job_of_n = NULL; | |
229 | } | |
03b717a3 | 230 | |
8bb310c3 ZJS |
231 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
232 | if (job_get_timeout(j, &x) > 0) | |
233 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
234 | ||
127d5fd1 | 235 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
236 | "%sA %s job is running for %s (%s / %s)", |
237 | strempty(job_of_n), | |
238 | job_type_to_string(j->type), | |
239 | unit_description(j->unit), | |
240 | time, limit); | |
03b717a3 MS |
241 | } |
242 | ||
e46b13c8 ZJS |
243 | static int have_ask_password(void) { |
244 | _cleanup_closedir_ DIR *dir; | |
8fb3f009 | 245 | struct dirent *de; |
e46b13c8 ZJS |
246 | |
247 | dir = opendir("/run/systemd/ask-password"); | |
248 | if (!dir) { | |
249 | if (errno == ENOENT) | |
250 | return false; | |
251 | else | |
252 | return -errno; | |
253 | } | |
254 | ||
8fb3f009 | 255 | FOREACH_DIRENT_ALL(de, dir, return -errno) { |
e46b13c8 ZJS |
256 | if (startswith(de->d_name, "ask.")) |
257 | return true; | |
258 | } | |
8fb3f009 | 259 | return false; |
e46b13c8 ZJS |
260 | } |
261 | ||
262 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
263 | int fd, uint32_t revents, void *userdata) { | |
264 | Manager *m = userdata; | |
265 | ||
266 | assert(m); | |
267 | ||
665dfe93 | 268 | (void) flush_fd(fd); |
e46b13c8 ZJS |
269 | |
270 | m->have_ask_password = have_ask_password(); | |
271 | if (m->have_ask_password < 0) | |
272 | /* Log error but continue. Negative have_ask_password | |
273 | * is treated as unknown status. */ | |
c33b3297 | 274 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
279 | static void manager_close_ask_password(Manager *m) { | |
280 | assert(m); | |
281 | ||
e46b13c8 | 282 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 283 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
284 | m->have_ask_password = -EINVAL; |
285 | } | |
286 | ||
287 | static int manager_check_ask_password(Manager *m) { | |
288 | int r; | |
289 | ||
290 | assert(m); | |
291 | ||
292 | if (!m->ask_password_event_source) { | |
293 | assert(m->ask_password_inotify_fd < 0); | |
294 | ||
295 | mkdir_p_label("/run/systemd/ask-password", 0755); | |
296 | ||
297 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 MS |
298 | if (m->ask_password_inotify_fd < 0) |
299 | return log_error_errno(errno, "inotify_init1() failed: %m"); | |
e46b13c8 ZJS |
300 | |
301 | if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) { | |
56f64d95 | 302 | log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
303 | manager_close_ask_password(m); |
304 | return -errno; | |
305 | } | |
306 | ||
307 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
308 | m->ask_password_inotify_fd, EPOLLIN, | |
309 | manager_dispatch_ask_password_fd, m); | |
310 | if (r < 0) { | |
56f64d95 | 311 | log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
312 | manager_close_ask_password(m); |
313 | return -errno; | |
314 | } | |
315 | ||
7dfbe2e3 TG |
316 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
317 | ||
e46b13c8 ZJS |
318 | /* Queries might have been added meanwhile... */ |
319 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
320 | m->ask_password_inotify_fd, EPOLLIN, m); | |
321 | } | |
322 | ||
323 | return m->have_ask_password; | |
324 | } | |
325 | ||
31a7eb86 | 326 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
327 | int r; |
328 | ||
718db961 LP |
329 | assert(m); |
330 | ||
331 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
332 | return 0; |
333 | ||
334 | if (m->idle_pipe[2] < 0) | |
335 | return 0; | |
336 | ||
151b9b96 | 337 | 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 |
338 | if (r < 0) |
339 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 340 | |
7dfbe2e3 TG |
341 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
342 | ||
31a7eb86 | 343 | return 0; |
31a7eb86 ZJS |
344 | } |
345 | ||
718db961 LP |
346 | static void manager_close_idle_pipe(Manager *m) { |
347 | assert(m); | |
31a7eb86 | 348 | |
cd72bd8a LP |
349 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
350 | ||
3d94f76c LP |
351 | safe_close_pair(m->idle_pipe); |
352 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
353 | } |
354 | ||
8742514c | 355 | static int manager_setup_time_change(Manager *m) { |
718db961 | 356 | int r; |
b92bea5d ZJS |
357 | |
358 | /* We only care for the cancellation event, hence we set the | |
359 | * timeout to the latest possible value. */ | |
360 | struct itimerspec its = { | |
361 | .it_value.tv_sec = TIME_T_MAX, | |
362 | }; | |
8742514c | 363 | |
718db961 LP |
364 | assert(m); |
365 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
8742514c | 366 | |
e0a3da1f | 367 | if (m->test_run_flags) |
0d8c31ff ZJS |
368 | return 0; |
369 | ||
8742514c LP |
370 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever |
371 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
372 | ||
718db961 | 373 | m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); |
4a62c710 MS |
374 | if (m->time_change_fd < 0) |
375 | return log_error_errno(errno, "Failed to create timerfd: %m"); | |
8742514c | 376 | |
718db961 | 377 | if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
56f64d95 | 378 | log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); |
03e334a1 | 379 | m->time_change_fd = safe_close(m->time_change_fd); |
8742514c LP |
380 | return 0; |
381 | } | |
382 | ||
151b9b96 | 383 | 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 |
384 | if (r < 0) |
385 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 386 | |
7dfbe2e3 TG |
387 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
388 | ||
8742514c LP |
389 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
80876c20 | 394 | static int enable_special_signals(Manager *m) { |
718db961 | 395 | _cleanup_close_ int fd = -1; |
80876c20 LP |
396 | |
397 | assert(m); | |
398 | ||
e0a3da1f | 399 | if (m->test_run_flags) |
37453b3a EV |
400 | return 0; |
401 | ||
a41b539e | 402 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
403 | * this will fail with EPERM (older) or EINVAL (newer), so |
404 | * ignore that. */ | |
4c701096 | 405 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 406 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 407 | |
a41b539e LP |
408 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
409 | if (fd < 0) { | |
410 | /* Support systems without virtual console */ | |
411 | if (fd != -ENOENT) | |
56f64d95 | 412 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 413 | } else { |
80876c20 LP |
414 | /* Enable that we get SIGWINCH on kbrequest */ |
415 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 416 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
417 | } |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
ce578209 | 422 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
423 | struct sigaction sa = { |
424 | .sa_handler = SIG_DFL, | |
425 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
426 | }; | |
718db961 LP |
427 | sigset_t mask; |
428 | int r; | |
60918275 | 429 | |
ce578209 LP |
430 | assert(m); |
431 | ||
57c0c30e LP |
432 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
433 | ||
4dffec14 LP |
434 | /* We make liberal use of realtime signals here. On |
435 | * Linux/glibc we have 30 of them (with the exception of Linux | |
436 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
437 | * (aka SIGRTMAX). */ | |
7d793605 | 438 | |
4dffec14 | 439 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
440 | sigset_add_many(&mask, |
441 | SIGCHLD, /* Child died */ | |
442 | SIGTERM, /* Reexecute daemon */ | |
443 | SIGHUP, /* Reload configuration */ | |
444 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
445 | SIGUSR2, /* systemd: dump status */ | |
446 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
447 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
448 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 449 | |
7d793605 | 450 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 451 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
452 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
453 | SIGRTMIN+3, /* systemd: start halt.target */ | |
454 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
455 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 456 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
457 | |
458 | /* ... space for more special targets ... */ | |
459 | ||
0003d1ab LP |
460 | SIGRTMIN+13, /* systemd: Immediate halt */ |
461 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
462 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
463 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
464 | |
465 | /* ... space for more immediate system state changes ... */ | |
466 | ||
0658666b LP |
467 | SIGRTMIN+20, /* systemd: enable status messages */ |
468 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
469 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
470 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 471 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
472 | |
473 | /* .. one free signal here ... */ | |
474 | ||
475 | #if !defined(__hppa64__) && !defined(__hppa__) | |
476 | /* Apparently Linux on hppa has fewer RT | |
477 | * signals (SIGRTMAX is SIGRTMIN+25 there), | |
478 | * hence let's not try to make use of them | |
479 | * here. Since these commands are accessible | |
480 | * by different means and only really a safety | |
481 | * net, the missing functionality on hppa | |
482 | * shouldn't matter. */ | |
483 | ||
4cfa2c99 | 484 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
485 | SIGRTMIN+27, /* systemd: set log target to console */ |
486 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
ee33e53a | 487 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */ |
4dffec14 LP |
488 | |
489 | /* ... one free signal here SIGRTMIN+30 ... */ | |
490 | #endif | |
7d793605 | 491 | -1); |
ce578209 LP |
492 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
493 | ||
718db961 LP |
494 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
495 | if (m->signal_fd < 0) | |
ce578209 LP |
496 | return -errno; |
497 | ||
151b9b96 | 498 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
499 | if (r < 0) |
500 | return r; | |
ce578209 | 501 | |
7dfbe2e3 TG |
502 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
503 | ||
d8fdc620 LP |
504 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
505 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
506 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
507 | * status information before detecting that there's no process in a cgroup. */ | |
508 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
509 | if (r < 0) |
510 | return r; | |
511 | ||
463d0d15 | 512 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 513 | return enable_special_signals(m); |
e1414003 | 514 | |
ce578209 LP |
515 | return 0; |
516 | } | |
517 | ||
47cf8ff2 | 518 | static void manager_sanitize_environment(Manager *m) { |
f069efb4 LP |
519 | assert(m); |
520 | ||
47cf8ff2 | 521 | /* Let's remove some environment variables that we need ourselves to communicate with our clients */ |
f069efb4 LP |
522 | strv_env_unset_many( |
523 | m->environment, | |
47cf8ff2 LP |
524 | "EXIT_CODE", |
525 | "EXIT_STATUS", | |
526 | "INVOCATION_ID", | |
527 | "JOURNAL_STREAM", | |
528 | "LISTEN_FDNAMES", | |
529 | "LISTEN_FDS", | |
530 | "LISTEN_PID", | |
f069efb4 LP |
531 | "MAINPID", |
532 | "MANAGERPID", | |
47cf8ff2 LP |
533 | "NOTIFY_SOCKET", |
534 | "REMOTE_ADDR", | |
535 | "REMOTE_PORT", | |
536 | "SERVICE_RESULT", | |
f069efb4 LP |
537 | "WATCHDOG_PID", |
538 | "WATCHDOG_USEC", | |
539 | NULL); | |
47cf8ff2 LP |
540 | |
541 | /* Let's order the environment alphabetically, just to make it pretty */ | |
542 | strv_sort(m->environment); | |
f069efb4 LP |
543 | } |
544 | ||
e21fea24 | 545 | static int manager_default_environment(Manager *m) { |
71ecc858 LP |
546 | assert(m); |
547 | ||
463d0d15 | 548 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
549 | /* The system manager always starts with a clean |
550 | * environment for its children. It does not import | |
71cb7d30 | 551 | * the kernel's or the parents' exported variables. |
e21fea24 | 552 | * |
71cb7d30 | 553 | * The initial passed environment is untouched to keep |
e21fea24 KS |
554 | * /proc/self/environ valid; it is used for tagging |
555 | * the init process inside containers. */ | |
43638332 ZJS |
556 | m->environment = strv_new("PATH=" DEFAULT_PATH, |
557 | NULL); | |
e21fea24 KS |
558 | |
559 | /* Import locale variables LC_*= from configuration */ | |
560 | locale_setup(&m->environment); | |
71cb7d30 | 561 | } else |
e21fea24 KS |
562 | /* The user manager passes its own environment |
563 | * along to its children. */ | |
564 | m->environment = strv_copy(environ); | |
43d03a83 | 565 | |
e21fea24 KS |
566 | if (!m->environment) |
567 | return -ENOMEM; | |
8b55b8c4 | 568 | |
47cf8ff2 | 569 | manager_sanitize_environment(m); |
9d5a3757 | 570 | |
e21fea24 | 571 | return 0; |
71ecc858 LP |
572 | } |
573 | ||
3536f49e YW |
574 | static int manager_setup_prefix(Manager *m) { |
575 | struct table_entry { | |
576 | uint64_t type; | |
577 | const char *suffix; | |
578 | }; | |
579 | ||
72fd1768 | 580 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
3536f49e YW |
581 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
582 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
583 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
584 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
585 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, | |
586 | }; | |
587 | ||
72fd1768 | 588 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
3536f49e YW |
589 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
590 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
c6218495 LP |
591 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, |
592 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
593 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
3536f49e YW |
594 | }; |
595 | ||
596 | const struct table_entry *p; | |
597 | ExecDirectoryType i; | |
598 | int r; | |
599 | ||
600 | assert(m); | |
601 | ||
602 | if (MANAGER_IS_SYSTEM(m)) | |
603 | p = paths_system; | |
604 | else | |
605 | p = paths_user; | |
606 | ||
72fd1768 | 607 | for (i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
3536f49e YW |
608 | r = sd_path_home(p[i].type, p[i].suffix, &m->prefix[i]); |
609 | if (r < 0) | |
610 | return r; | |
611 | } | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
279d81dd LP |
616 | static int manager_setup_run_queue(Manager *m) { |
617 | int r; | |
618 | ||
619 | assert(m); | |
620 | assert(!m->run_queue_event_source); | |
621 | ||
622 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
623 | if (r < 0) | |
624 | return r; | |
625 | ||
626 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
627 | if (r < 0) | |
628 | return r; | |
629 | ||
630 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
631 | if (r < 0) | |
632 | return r; | |
633 | ||
634 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
575b300b LP |
639 | static int manager_setup_sigchld_event_source(Manager *m) { |
640 | int r; | |
641 | ||
642 | assert(m); | |
643 | assert(!m->sigchld_event_source); | |
644 | ||
645 | r = sd_event_add_defer(m->event, &m->sigchld_event_source, manager_dispatch_sigchld, m); | |
646 | if (r < 0) | |
647 | return r; | |
648 | ||
649 | r = sd_event_source_set_priority(m->sigchld_event_source, SD_EVENT_PRIORITY_NORMAL-7); | |
650 | if (r < 0) | |
651 | return r; | |
652 | ||
653 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); | |
654 | if (r < 0) | |
655 | return r; | |
656 | ||
657 | (void) sd_event_source_set_description(m->sigchld_event_source, "manager-sigchld"); | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
e0a3da1f | 662 | int manager_new(UnitFileScope scope, unsigned test_run_flags, Manager **_m) { |
ce578209 | 663 | Manager *m; |
e3dd987c | 664 | int r; |
8e274523 LP |
665 | |
666 | assert(_m); | |
463d0d15 | 667 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 668 | |
915b3753 LP |
669 | m = new0(Manager, 1); |
670 | if (!m) | |
8e274523 | 671 | return -ENOMEM; |
60918275 | 672 | |
463d0d15 | 673 | m->unit_file_scope = scope; |
a16e1123 | 674 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
bd8f585b | 675 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; |
9ded9cd1 | 676 | m->default_tasks_accounting = true; |
79baeeb9 | 677 | m->default_tasks_max = UINT64_MAX; |
bd389aa7 LP |
678 | m->default_timeout_start_usec = DEFAULT_TIMEOUT_USEC; |
679 | m->default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC; | |
680 | m->default_restart_usec = DEFAULT_RESTART_USEC; | |
80876c20 | 681 | |
349cc4a5 | 682 | #if ENABLE_EFI |
463d0d15 | 683 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
684 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
685 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
686 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
687 | #endif |
688 | ||
f2341e0a | 689 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
690 | if (MANAGER_IS_SYSTEM(m)) { |
691 | m->unit_log_field = "UNIT="; | |
692 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
693 | |
694 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 695 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
696 | } else { |
697 | m->unit_log_field = "USER_UNIT="; | |
698 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
699 | |
700 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 701 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 702 | } |
f2341e0a | 703 | |
718db961 | 704 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; |
8742514c | 705 | |
d8fdc620 | 706 | m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = |
232f6754 | 707 | m->dev_autofs_fd = m->private_listen_fd = m->cgroup_inotify_fd = |
d8fdc620 | 708 | m->ask_password_inotify_fd = -1; |
d379d442 | 709 | |
00d9ef85 LP |
710 | m->user_lookup_fds[0] = m->user_lookup_fds[1] = -1; |
711 | ||
ea430986 | 712 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 713 | |
e46b13c8 | 714 | m->have_ask_password = -EINVAL; /* we don't know */ |
ae2a2c53 | 715 | m->first_boot = -1; |
e46b13c8 | 716 | |
e0a3da1f | 717 | m->test_run_flags = test_run_flags; |
0d8c31ff | 718 | |
2e5c94b9 LP |
719 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
720 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
721 | ||
e21fea24 KS |
722 | r = manager_default_environment(m); |
723 | if (r < 0) | |
1137a57c LP |
724 | goto fail; |
725 | ||
d5099efc | 726 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 727 | if (r < 0) |
60918275 LP |
728 | goto fail; |
729 | ||
d5099efc | 730 | r = hashmap_ensure_allocated(&m->jobs, NULL); |
718db961 | 731 | if (r < 0) |
60918275 LP |
732 | goto fail; |
733 | ||
d5099efc | 734 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); |
718db961 | 735 | if (r < 0) |
9152c765 LP |
736 | goto fail; |
737 | ||
d5099efc | 738 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 739 | if (r < 0) |
05e343b7 LP |
740 | goto fail; |
741 | ||
718db961 LP |
742 | r = sd_event_default(&m->event); |
743 | if (r < 0) | |
8742514c LP |
744 | goto fail; |
745 | ||
279d81dd | 746 | r = manager_setup_run_queue(m); |
752b5905 LP |
747 | if (r < 0) |
748 | goto fail; | |
749 | ||
8742514c LP |
750 | r = manager_setup_signals(m); |
751 | if (r < 0) | |
9152c765 LP |
752 | goto fail; |
753 | ||
8742514c LP |
754 | r = manager_setup_cgroup(m); |
755 | if (r < 0) | |
8e274523 LP |
756 | goto fail; |
757 | ||
8742514c LP |
758 | r = manager_setup_time_change(m); |
759 | if (r < 0) | |
8c47c732 LP |
760 | goto fail; |
761 | ||
575b300b LP |
762 | r = manager_setup_sigchld_event_source(m); |
763 | if (r < 0) | |
764 | goto fail; | |
765 | ||
9670d583 LP |
766 | m->udev = udev_new(); |
767 | if (!m->udev) { | |
768 | r = -ENOMEM; | |
769 | goto fail; | |
770 | } | |
771 | ||
e27fe688 LP |
772 | r = manager_setup_prefix(m); |
773 | if (r < 0) | |
774 | goto fail; | |
775 | ||
5eb397cf | 776 | if (MANAGER_IS_SYSTEM(m) && test_run_flags == 0) { |
d3070fbd LP |
777 | r = mkdir_label("/run/systemd/units", 0755); |
778 | if (r < 0 && r != -EEXIST) | |
779 | goto fail; | |
780 | } | |
781 | ||
e27fe688 LP |
782 | m->taint_usr = |
783 | !in_initrd() && | |
784 | dir_is_empty("/usr") > 0; | |
785 | ||
232f6754 ZJS |
786 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
787 | * since they might have gotten serialized across the reexec. */ | |
3536f49e | 788 | |
8e274523 LP |
789 | *_m = m; |
790 | return 0; | |
60918275 LP |
791 | |
792 | fail: | |
793 | manager_free(m); | |
8e274523 | 794 | return r; |
60918275 LP |
795 | } |
796 | ||
d86f9d52 | 797 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 798 | int r; |
d86f9d52 | 799 | |
e0a3da1f | 800 | if (m->test_run_flags) |
0d8c31ff ZJS |
801 | return 0; |
802 | ||
d86f9d52 LP |
803 | if (m->notify_fd < 0) { |
804 | _cleanup_close_ int fd = -1; | |
920b52e4 | 805 | union sockaddr_union sa = { |
7181dbdb LP |
806 | .sa.sa_family = AF_UNIX, |
807 | }; | |
55836941 | 808 | static const int one = 1; |
d86f9d52 LP |
809 | |
810 | /* First free all secondary fields */ | |
a1e58e8e | 811 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
812 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
813 | ||
814 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
815 | if (fd < 0) |
816 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 817 | |
a47806fa LP |
818 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
819 | ||
3536f49e | 820 | m->notify_socket = strappend(m->prefix[EXEC_DIRECTORY_RUNTIME], "/systemd/notify"); |
498e87d6 LP |
821 | if (!m->notify_socket) |
822 | return log_oom(); | |
823 | ||
824 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
f0e62e89 | 825 | (void) unlink(m->notify_socket); |
7181dbdb LP |
826 | |
827 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
fc2fffe7 | 828 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
4a62c710 MS |
829 | if (r < 0) |
830 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
d86f9d52 LP |
831 | |
832 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
833 | if (r < 0) |
834 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
d86f9d52 | 835 | |
d86f9d52 LP |
836 | m->notify_fd = fd; |
837 | fd = -1; | |
838 | ||
839 | log_debug("Using notification socket %s", m->notify_socket); | |
840 | } | |
841 | ||
842 | if (!m->notify_event_source) { | |
151b9b96 | 843 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
844 | if (r < 0) |
845 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 846 | |
d8fdc620 LP |
847 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
848 | * service an exit message belongs. */ | |
575b300b | 849 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-8); |
23bbb0de MS |
850 | if (r < 0) |
851 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
852 | |
853 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
854 | } |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
d8fdc620 LP |
859 | static int manager_setup_cgroups_agent(Manager *m) { |
860 | ||
861 | static const union sockaddr_union sa = { | |
862 | .un.sun_family = AF_UNIX, | |
863 | .un.sun_path = "/run/systemd/cgroups-agent", | |
864 | }; | |
865 | int r; | |
866 | ||
867 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
868 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
869 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
870 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
871 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
872 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
873 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
874 | * we thus won't lose messages. | |
875 | * | |
876 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
877 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
878 | * bus for these messages. */ | |
879 | ||
e0a3da1f | 880 | if (m->test_run_flags) |
d8fdc620 LP |
881 | return 0; |
882 | ||
883 | if (!MANAGER_IS_SYSTEM(m)) | |
884 | return 0; | |
885 | ||
c22800e4 | 886 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
887 | if (r < 0) |
888 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
889 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
890 | return 0; |
891 | ||
892 | if (m->cgroups_agent_fd < 0) { | |
893 | _cleanup_close_ int fd = -1; | |
894 | ||
895 | /* First free all secondary fields */ | |
896 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
897 | ||
898 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
899 | if (fd < 0) | |
900 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
901 | ||
902 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
903 | ||
904 | (void) unlink(sa.un.sun_path); | |
905 | ||
906 | /* Only allow root to connect to this socket */ | |
907 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 908 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
909 | if (r < 0) |
910 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
911 | ||
912 | m->cgroups_agent_fd = fd; | |
913 | fd = -1; | |
914 | } | |
915 | ||
916 | if (!m->cgroups_agent_event_source) { | |
917 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
918 | if (r < 0) | |
919 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
920 | ||
921 | /* Process cgroups notifications early, but after having processed service notification messages or | |
922 | * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, | |
923 | * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of | |
924 | * cgroup inotify for the unified cgroup stuff. */ | |
09e24654 | 925 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-4); |
d8fdc620 LP |
926 | if (r < 0) |
927 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
928 | ||
929 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
930 | } | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
00d9ef85 LP |
935 | static int manager_setup_user_lookup_fd(Manager *m) { |
936 | int r; | |
937 | ||
938 | assert(m); | |
939 | ||
940 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
941 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
942 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
943 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
944 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
945 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
946 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
947 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
948 | * this purpose. | |
949 | * | |
950 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
951 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
952 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
953 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
954 | * | |
955 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
956 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
957 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
958 | ||
959 | if (m->user_lookup_fds[0] < 0) { | |
960 | ||
961 | /* Free all secondary fields */ | |
962 | safe_close_pair(m->user_lookup_fds); | |
963 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
964 | ||
965 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
966 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
967 | ||
968 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
969 | } | |
970 | ||
971 | if (!m->user_lookup_event_source) { | |
972 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
973 | if (r < 0) | |
974 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
975 | ||
976 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
977 | * resolutions */ | |
67ae4e8d | 978 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-11); |
00d9ef85 LP |
979 | if (r < 0) |
980 | return log_error_errno(errno, "Failed to set priority ot user lookup event source: %m"); | |
981 | ||
982 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
983 | } | |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
d86f9d52 LP |
988 | static int manager_connect_bus(Manager *m, bool reexecuting) { |
989 | bool try_bus_connect; | |
5463fa0a | 990 | Unit *u = NULL; |
d86f9d52 LP |
991 | |
992 | assert(m); | |
993 | ||
e0a3da1f | 994 | if (m->test_run_flags) |
0d8c31ff ZJS |
995 | return 0; |
996 | ||
5463fa0a MS |
997 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); |
998 | ||
d86f9d52 | 999 | try_bus_connect = |
41dfa61d | 1000 | (u && SERVICE(u)->deserialized_state == SERVICE_RUNNING) && |
5463fa0a MS |
1001 | (reexecuting || |
1002 | (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"))); | |
d86f9d52 | 1003 | |
ff9b60f3 | 1004 | /* Try to connect to the buses, if possible. */ |
d86f9d52 LP |
1005 | return bus_init(m, try_bus_connect); |
1006 | } | |
1007 | ||
23a177ef | 1008 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 1009 | Unit *u; |
23a177ef LP |
1010 | unsigned n = 0; |
1011 | ||
1012 | assert(m); | |
1013 | ||
595ed347 MS |
1014 | while ((u = m->cleanup_queue)) { |
1015 | assert(u->in_cleanup_queue); | |
23a177ef | 1016 | |
595ed347 | 1017 | unit_free(u); |
23a177ef LP |
1018 | n++; |
1019 | } | |
1020 | ||
1021 | return n; | |
1022 | } | |
1023 | ||
eced69b3 | 1024 | enum { |
35b8ca3a | 1025 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
1026 | GC_OFFSET_UNSURE, /* No clue */ |
1027 | GC_OFFSET_GOOD, /* We still need this unit */ | |
1028 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
1029 | _GC_OFFSET_MAX | |
1030 | }; | |
1031 | ||
00d9ef85 | 1032 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f | 1033 | Unit *other; |
eef85c4a LP |
1034 | Iterator i; |
1035 | void *v; | |
4892084f LN |
1036 | |
1037 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
1038 | ||
1039 | /* Recursively mark referenced units as GOOD as well */ | |
eef85c4a | 1040 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCES], i) |
4892084f LN |
1041 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
1042 | unit_gc_mark_good(other, gc_marker); | |
1043 | } | |
1044 | ||
eced69b3 | 1045 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 1046 | Unit *other; |
eced69b3 | 1047 | bool is_bad; |
eef85c4a LP |
1048 | Iterator i; |
1049 | void *v; | |
701cc384 LP |
1050 | |
1051 | assert(u); | |
1052 | ||
4c701096 YW |
1053 | if (IN_SET(u->gc_marker - gc_marker, |
1054 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1055 | return; |
1056 | ||
ac155bb8 | 1057 | if (u->in_cleanup_queue) |
701cc384 LP |
1058 | goto bad; |
1059 | ||
1060 | if (unit_check_gc(u)) | |
1061 | goto good; | |
1062 | ||
ac155bb8 | 1063 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1064 | |
1065 | is_bad = true; | |
1066 | ||
eef85c4a | 1067 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
1068 | unit_gc_sweep(other, gc_marker); |
1069 | ||
ac155bb8 | 1070 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1071 | goto good; |
eced69b3 | 1072 | |
ac155bb8 | 1073 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1074 | is_bad = false; |
701cc384 LP |
1075 | } |
1076 | ||
eced69b3 LP |
1077 | if (is_bad) |
1078 | goto bad; | |
1079 | ||
1080 | /* We were unable to find anything out about this entry, so | |
1081 | * let's investigate it later */ | |
ac155bb8 | 1082 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1083 | unit_add_to_gc_queue(u); |
1084 | return; | |
1085 | ||
701cc384 | 1086 | bad: |
eced69b3 LP |
1087 | /* We definitely know that this one is not useful anymore, so |
1088 | * let's mark it for deletion */ | |
ac155bb8 | 1089 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1090 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1091 | return; |
1092 | ||
1093 | good: | |
4892084f | 1094 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1095 | } |
1096 | ||
c5a97ed1 LP |
1097 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1098 | unsigned n = 0, gc_marker; | |
595ed347 | 1099 | Unit *u; |
701cc384 LP |
1100 | |
1101 | assert(m); | |
1102 | ||
cf1265e1 | 1103 | /* log_debug("Running GC..."); */ |
701cc384 | 1104 | |
eced69b3 LP |
1105 | m->gc_marker += _GC_OFFSET_MAX; |
1106 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1107 | m->gc_marker = 1; |
701cc384 | 1108 | |
eced69b3 LP |
1109 | gc_marker = m->gc_marker; |
1110 | ||
c5a97ed1 | 1111 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1112 | assert(u->in_gc_queue); |
701cc384 | 1113 | |
595ed347 | 1114 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1115 | |
c5a97ed1 | 1116 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1117 | u->in_gc_queue = false; |
701cc384 LP |
1118 | |
1119 | n++; | |
1120 | ||
4c701096 YW |
1121 | if (IN_SET(u->gc_marker - gc_marker, |
1122 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1123 | if (u->id) |
f2341e0a | 1124 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1125 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1126 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1127 | } |
1128 | } | |
1129 | ||
701cc384 LP |
1130 | return n; |
1131 | } | |
1132 | ||
c5a97ed1 LP |
1133 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1134 | unsigned n = 0; | |
1135 | Job *j; | |
1136 | ||
1137 | assert(m); | |
1138 | ||
1139 | while ((j = m->gc_job_queue)) { | |
1140 | assert(j->in_gc_queue); | |
1141 | ||
1142 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1143 | j->in_gc_queue = false; | |
1144 | ||
1145 | n++; | |
1146 | ||
1147 | if (job_check_gc(j)) | |
1148 | continue; | |
1149 | ||
1150 | log_unit_debug(j->unit, "Collecting job."); | |
1151 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1152 | } | |
1153 | ||
1154 | return n; | |
1155 | } | |
1156 | ||
a16e1123 | 1157 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1158 | Unit *u; |
60918275 LP |
1159 | |
1160 | assert(m); | |
1161 | ||
87f0e418 LP |
1162 | while ((u = hashmap_first(m->units))) |
1163 | unit_free(u); | |
964e0949 LP |
1164 | |
1165 | manager_dispatch_cleanup_queue(m); | |
1166 | ||
1167 | assert(!m->load_queue); | |
1168 | assert(!m->run_queue); | |
1169 | assert(!m->dbus_unit_queue); | |
1170 | assert(!m->dbus_job_queue); | |
1171 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1172 | assert(!m->gc_unit_queue); |
1173 | assert(!m->gc_job_queue); | |
964e0949 | 1174 | |
964e0949 LP |
1175 | assert(hashmap_isempty(m->jobs)); |
1176 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1177 | |
1178 | m->n_on_console = 0; | |
1179 | m->n_running_jobs = 0; | |
a16e1123 LP |
1180 | } |
1181 | ||
06d8d842 | 1182 | Manager* manager_free(Manager *m) { |
a16e1123 | 1183 | UnitType c; |
c93ff2e9 | 1184 | int i; |
35aba85a | 1185 | ExecDirectoryType dt; |
87f0e418 | 1186 | |
06d8d842 ZJS |
1187 | if (!m) |
1188 | return NULL; | |
a16e1123 LP |
1189 | |
1190 | manager_clear_jobs_and_units(m); | |
23a177ef | 1191 | |
7824bbeb LP |
1192 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
1193 | if (unit_vtable[c]->shutdown) | |
1194 | unit_vtable[c]->shutdown(m); | |
1195 | ||
a1f31f47 | 1196 | /* If we reexecute ourselves, we keep the root cgroup around */ |
c6c18be3 | 1197 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 1198 | |
07a78643 | 1199 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1200 | |
5e8d1c9a | 1201 | bus_done(m); |
ea430986 | 1202 | |
e8a565cb YW |
1203 | exec_runtime_vacuum(m); |
1204 | hashmap_free(m->exec_runtime_by_id); | |
1205 | ||
29206d46 LP |
1206 | dynamic_user_vacuum(m, false); |
1207 | hashmap_free(m->dynamic_users); | |
1208 | ||
87f0e418 | 1209 | hashmap_free(m->units); |
4b58153d | 1210 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1211 | hashmap_free(m->jobs); |
62a76913 | 1212 | hashmap_free(m->watch_pids); |
05e343b7 | 1213 | hashmap_free(m->watch_bus); |
9152c765 | 1214 | |
95ae05c0 | 1215 | set_free(m->startup_units); |
f755e3b7 LP |
1216 | set_free(m->failed_units); |
1217 | ||
718db961 | 1218 | sd_event_source_unref(m->signal_event_source); |
575b300b | 1219 | sd_event_source_unref(m->sigchld_event_source); |
718db961 | 1220 | sd_event_source_unref(m->notify_event_source); |
d8fdc620 | 1221 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 LP |
1222 | sd_event_source_unref(m->time_change_event_source); |
1223 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
752b5905 | 1224 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1225 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1226 | |
03e334a1 LP |
1227 | safe_close(m->signal_fd); |
1228 | safe_close(m->notify_fd); | |
d8fdc620 | 1229 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1230 | safe_close(m->time_change_fd); |
00d9ef85 | 1231 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1232 | |
e46b13c8 ZJS |
1233 | manager_close_ask_password(m); |
1234 | ||
718db961 LP |
1235 | manager_close_idle_pipe(m); |
1236 | ||
9670d583 | 1237 | udev_unref(m->udev); |
718db961 | 1238 | sd_event_unref(m->event); |
60918275 | 1239 | |
c952c6ec LP |
1240 | free(m->notify_socket); |
1241 | ||
84e3543e | 1242 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 1243 | strv_free(m->environment); |
036643a2 | 1244 | |
4ad49000 | 1245 | hashmap_free(m->cgroup_unit); |
c6c18be3 | 1246 | set_free_free(m->unit_path_cache); |
33be102a | 1247 | |
664f88a7 LP |
1248 | free(m->switch_root); |
1249 | free(m->switch_root_init); | |
1250 | ||
517d56b1 | 1251 | for (i = 0; i < _RLIMIT_MAX; i++) |
d9814c76 | 1252 | m->rlimit[i] = mfree(m->rlimit[i]); |
c93ff2e9 | 1253 | |
a57f7e2c LP |
1254 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1255 | hashmap_free(m->units_requiring_mounts_for); | |
1256 | ||
00d9ef85 LP |
1257 | hashmap_free(m->uid_refs); |
1258 | hashmap_free(m->gid_refs); | |
1259 | ||
72fd1768 | 1260 | for (dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a YW |
1261 | m->prefix[dt] = mfree(m->prefix[dt]); |
1262 | ||
6b430fdb | 1263 | return mfree(m); |
60918275 LP |
1264 | } |
1265 | ||
ba64af90 | 1266 | void manager_enumerate(Manager *m) { |
f50e0a01 | 1267 | UnitType c; |
f50e0a01 LP |
1268 | |
1269 | assert(m); | |
1270 | ||
a16e1123 LP |
1271 | /* Let's ask every type to load all units from disk/kernel |
1272 | * that it might know */ | |
0faacd47 | 1273 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1274 | if (!unit_type_supported(c)) { |
03afec3c | 1275 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1276 | continue; |
a57f7e2c | 1277 | } |
f50e0a01 | 1278 | |
0faacd47 LP |
1279 | if (!unit_vtable[c]->enumerate) |
1280 | continue; | |
1281 | ||
ba64af90 | 1282 | unit_vtable[c]->enumerate(m); |
0faacd47 LP |
1283 | } |
1284 | ||
f50e0a01 | 1285 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1286 | } |
1287 | ||
007c6337 | 1288 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1289 | Iterator i; |
1290 | Unit *u; | |
1291 | char *k; | |
007c6337 | 1292 | int r; |
a16e1123 LP |
1293 | |
1294 | assert(m); | |
f50e0a01 LP |
1295 | |
1296 | /* Then, let's set up their initial state. */ | |
1297 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1298 | ||
1299 | /* ignore aliases */ | |
ac155bb8 | 1300 | if (u->id != k) |
f50e0a01 LP |
1301 | continue; |
1302 | ||
007c6337 LP |
1303 | r = unit_coldplug(u); |
1304 | if (r < 0) | |
1305 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1306 | } |
a16e1123 LP |
1307 | } |
1308 | ||
fe51822e LP |
1309 | static void manager_build_unit_path_cache(Manager *m) { |
1310 | char **i; | |
fe51822e LP |
1311 | int r; |
1312 | ||
1313 | assert(m); | |
1314 | ||
1315 | set_free_free(m->unit_path_cache); | |
1316 | ||
d5099efc | 1317 | m->unit_path_cache = set_new(&string_hash_ops); |
874310b7 | 1318 | if (!m->unit_path_cache) { |
d063a527 LP |
1319 | r = -ENOMEM; |
1320 | goto fail; | |
fe51822e LP |
1321 | } |
1322 | ||
1323 | /* This simply builds a list of files we know exist, so that | |
1324 | * we don't always have to go to disk */ | |
1325 | ||
a3c4eb07 | 1326 | STRV_FOREACH(i, m->lookup_paths.search_path) { |
d063a527 | 1327 | _cleanup_closedir_ DIR *d = NULL; |
fe51822e LP |
1328 | struct dirent *de; |
1329 | ||
bd0af849 ZJS |
1330 | d = opendir(*i); |
1331 | if (!d) { | |
874310b7 | 1332 | if (errno != ENOENT) |
d063a527 | 1333 | log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); |
fe51822e LP |
1334 | continue; |
1335 | } | |
1336 | ||
d063a527 | 1337 | FOREACH_DIRENT(de, d, r = -errno; goto fail) { |
fe51822e LP |
1338 | char *p; |
1339 | ||
605405c6 | 1340 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name); |
44d91056 | 1341 | if (!p) { |
fe51822e LP |
1342 | r = -ENOMEM; |
1343 | goto fail; | |
1344 | } | |
1345 | ||
ef42202a ZJS |
1346 | r = set_consume(m->unit_path_cache, p); |
1347 | if (r < 0) | |
fe51822e | 1348 | goto fail; |
fe51822e | 1349 | } |
fe51822e LP |
1350 | } |
1351 | ||
1352 | return; | |
1353 | ||
1354 | fail: | |
d063a527 LP |
1355 | log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); |
1356 | m->unit_path_cache = set_free_free(m->unit_path_cache); | |
fe51822e LP |
1357 | } |
1358 | ||
9ff1a6f1 | 1359 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1360 | Iterator i; |
9ff1a6f1 | 1361 | Unit *u; |
9588bc32 LP |
1362 | |
1363 | assert(m); | |
1364 | ||
1365 | HASHMAP_FOREACH(u, m->units, i) { | |
1366 | ||
1367 | if (fdset_size(fds) <= 0) | |
1368 | break; | |
1369 | ||
9ff1a6f1 LP |
1370 | if (!UNIT_VTABLE(u)->distribute_fds) |
1371 | continue; | |
9588bc32 | 1372 | |
9ff1a6f1 LP |
1373 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1374 | } | |
9588bc32 LP |
1375 | } |
1376 | ||
a16e1123 | 1377 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
17f01ace | 1378 | int r; |
a16e1123 LP |
1379 | |
1380 | assert(m); | |
1381 | ||
a1f31f47 ZJS |
1382 | /* If we are running in test mode, we still want to run the generators, |
1383 | * but we should not touch the real generator directories. */ | |
1384 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, | |
e0a3da1f | 1385 | m->test_run_flags ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
a1f31f47 | 1386 | NULL); |
e801700e ZJS |
1387 | if (r < 0) |
1388 | return r; | |
5a1e9937 | 1389 | |
64691d20 ZJS |
1390 | r = manager_run_environment_generators(m); |
1391 | if (r < 0) | |
1392 | return r; | |
1393 | ||
9f9f0342 | 1394 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_GENERATORS_START); |
a3c4eb07 | 1395 | r = manager_run_generators(m); |
9f9f0342 | 1396 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_GENERATORS_FINISH); |
07719a21 LP |
1397 | if (r < 0) |
1398 | return r; | |
1399 | ||
fd130612 | 1400 | /* If this is the first boot, and we are in the host system, then preset everything */ |
81fe6cde | 1401 | if (m->first_boot > 0 && |
fd130612 | 1402 | MANAGER_IS_SYSTEM(m) && |
e0a3da1f | 1403 | !m->test_run_flags) { |
81fe6cde | 1404 | |
17f01ace ZJS |
1405 | r = unit_file_preset_all(UNIT_FILE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); |
1406 | if (r < 0) | |
1407 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1408 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
28dd66ec LB |
1409 | else |
1410 | log_info("Populated /etc with preset unit settings."); | |
1411 | } | |
1412 | ||
a1453343 | 1413 | lookup_paths_reduce(&m->lookup_paths); |
fe51822e LP |
1414 | manager_build_unit_path_cache(m); |
1415 | ||
9f611ad8 LP |
1416 | /* If we will deserialize make sure that during enumeration |
1417 | * this is already known, so we increase the counter here | |
1418 | * already */ | |
1419 | if (serialization) | |
313cefa1 | 1420 | m->n_reloading++; |
9f611ad8 | 1421 | |
a16e1123 | 1422 | /* First, enumerate what we can from all config files */ |
9f9f0342 | 1423 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD_START); |
ba64af90 | 1424 | manager_enumerate(m); |
9f9f0342 | 1425 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD_FINISH); |
a16e1123 LP |
1426 | |
1427 | /* Second, deserialize if there is something to deserialize */ | |
07429866 | 1428 | if (serialization) { |
1cd974ed | 1429 | r = manager_deserialize(m, serialization, fds); |
07429866 | 1430 | if (r < 0) |
17f01ace | 1431 | return log_error_errno(r, "Deserialization failed: %m"); |
07429866 | 1432 | } |
a16e1123 | 1433 | |
01e10de3 LP |
1434 | /* Any fds left? Find some unit which wants them. This is |
1435 | * useful to allow container managers to pass some file | |
1436 | * descriptors to us pre-initialized. This enables | |
1437 | * socket-based activation of entire containers. */ | |
9ff1a6f1 | 1438 | manager_distribute_fds(m, fds); |
01e10de3 | 1439 | |
d86f9d52 LP |
1440 | /* We might have deserialized the notify fd, but if we didn't |
1441 | * then let's create the bus now */ | |
17f01ace ZJS |
1442 | r = manager_setup_notify(m); |
1443 | if (r < 0) | |
1444 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1445 | return r; | |
d86f9d52 | 1446 | |
17f01ace ZJS |
1447 | r = manager_setup_cgroups_agent(m); |
1448 | if (r < 0) | |
1449 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1450 | return r; | |
d8fdc620 | 1451 | |
17f01ace ZJS |
1452 | r = manager_setup_user_lookup_fd(m); |
1453 | if (r < 0) | |
1454 | /* This shouldn't fail, except if things are really broken. */ | |
1455 | return r; | |
00d9ef85 | 1456 | |
232f6754 | 1457 | /* Let's connect to the bus now. */ |
05a98afd LP |
1458 | (void) manager_connect_bus(m, !!serialization); |
1459 | ||
1460 | (void) bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); | |
1461 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
e3dd987c | 1462 | |
a16e1123 | 1463 | /* Third, fire things up! */ |
007c6337 | 1464 | manager_coldplug(m); |
a16e1123 | 1465 | |
29206d46 LP |
1466 | /* Release any dynamic users no longer referenced */ |
1467 | dynamic_user_vacuum(m, true); | |
1468 | ||
e8a565cb YW |
1469 | exec_runtime_vacuum(m); |
1470 | ||
00d9ef85 LP |
1471 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
1472 | manager_vacuum_uid_refs(m); | |
1473 | manager_vacuum_gid_refs(m); | |
1474 | ||
9f611ad8 | 1475 | if (serialization) { |
a7556052 | 1476 | assert(m->n_reloading > 0); |
313cefa1 | 1477 | m->n_reloading--; |
71445ae7 LP |
1478 | |
1479 | /* Let's wait for the UnitNew/JobNew messages being | |
1480 | * sent, before we notify that the reload is | |
1481 | * finished */ | |
1482 | m->send_reloading_done = true; | |
9f611ad8 LP |
1483 | } |
1484 | ||
17f01ace | 1485 | return 0; |
f50e0a01 LP |
1486 | } |
1487 | ||
4bd29fe5 | 1488 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) { |
e5b5ae50 | 1489 | int r; |
7527cb52 | 1490 | Transaction *tr; |
e5b5ae50 LP |
1491 | |
1492 | assert(m); | |
1493 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1494 | assert(unit); |
e5b5ae50 | 1495 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1496 | |
7358dc02 ZJS |
1497 | if (mode == JOB_ISOLATE && type != JOB_START) |
1498 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
c497c7a9 | 1499 | |
7358dc02 ZJS |
1500 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1501 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
2528a7a6 | 1502 | |
f2341e0a | 1503 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1504 | |
c6497ccb | 1505 | type = job_type_collapse(type, unit); |
e0209d83 | 1506 | |
23ade460 | 1507 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1508 | if (!tr) |
1509 | return -ENOMEM; | |
11dd41ce | 1510 | |
4bd29fe5 | 1511 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
3742095b | 1512 | IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS), |
b94fbd30 | 1513 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
1514 | if (r < 0) |
1515 | goto tr_abort; | |
c497c7a9 | 1516 | |
7527cb52 MS |
1517 | if (mode == JOB_ISOLATE) { |
1518 | r = transaction_add_isolate_jobs(tr, m); | |
1519 | if (r < 0) | |
1520 | goto tr_abort; | |
1521 | } | |
1522 | ||
1523 | r = transaction_activate(tr, m, mode, e); | |
1524 | if (r < 0) | |
1525 | goto tr_abort; | |
e5b5ae50 | 1526 | |
f2341e0a | 1527 | log_unit_debug(unit, |
66870f90 ZJS |
1528 | "Enqueued job %s/%s as %u", unit->id, |
1529 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1530 | |
e5b5ae50 | 1531 | if (_ret) |
b94fbd30 | 1532 | *_ret = tr->anchor_job; |
60918275 | 1533 | |
7527cb52 | 1534 | transaction_free(tr); |
e5b5ae50 | 1535 | return 0; |
7527cb52 MS |
1536 | |
1537 | tr_abort: | |
1538 | transaction_abort(tr); | |
1539 | transaction_free(tr); | |
1540 | return r; | |
e5b5ae50 | 1541 | } |
60918275 | 1542 | |
53f18416 | 1543 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) { |
4440b27d | 1544 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1545 | int r; |
1546 | ||
1547 | assert(m); | |
1548 | assert(type < _JOB_TYPE_MAX); | |
1549 | assert(name); | |
1550 | assert(mode < _JOB_MODE_MAX); | |
1551 | ||
c3090674 LP |
1552 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1553 | if (r < 0) | |
28247076 | 1554 | return r; |
4440b27d | 1555 | assert(unit); |
28247076 | 1556 | |
53f18416 LP |
1557 | return manager_add_job(m, type, unit, mode, e, ret); |
1558 | } | |
1559 | ||
1560 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) { | |
4afd3348 | 1561 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1562 | int r; |
1563 | ||
1564 | assert(m); | |
1565 | assert(type < _JOB_TYPE_MAX); | |
1566 | assert(name); | |
1567 | assert(mode < _JOB_MODE_MAX); | |
1568 | ||
1569 | r = manager_add_job_by_name(m, type, name, mode, &error, ret); | |
1570 | if (r < 0) | |
1571 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1572 | ||
1573 | return r; | |
28247076 LP |
1574 | } |
1575 | ||
15d167f8 JW |
1576 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1577 | int r; | |
1578 | Transaction *tr; | |
1579 | ||
1580 | assert(m); | |
1581 | assert(unit); | |
1582 | assert(mode < _JOB_MODE_MAX); | |
1583 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1584 | ||
1585 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1586 | if (!tr) | |
1587 | return -ENOMEM; | |
1588 | ||
1589 | /* We need an anchor job */ | |
1590 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1591 | if (r < 0) | |
1592 | goto tr_abort; | |
1593 | ||
1594 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1595 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1596 | ||
1597 | r = transaction_activate(tr, m, mode, e); | |
1598 | if (r < 0) | |
1599 | goto tr_abort; | |
1600 | ||
1601 | transaction_free(tr); | |
1602 | return 0; | |
1603 | ||
1604 | tr_abort: | |
1605 | transaction_abort(tr); | |
1606 | transaction_free(tr); | |
1607 | return r; | |
1608 | } | |
1609 | ||
60918275 LP |
1610 | Job *manager_get_job(Manager *m, uint32_t id) { |
1611 | assert(m); | |
1612 | ||
1613 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1614 | } | |
1615 | ||
87f0e418 | 1616 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1617 | assert(m); |
1618 | assert(name); | |
1619 | ||
87f0e418 | 1620 | return hashmap_get(m->units, name); |
60918275 LP |
1621 | } |
1622 | ||
c1e1601e | 1623 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1624 | Unit *u; |
c1e1601e | 1625 | unsigned n = 0; |
60918275 LP |
1626 | |
1627 | assert(m); | |
1628 | ||
223dabab LP |
1629 | /* Make sure we are not run recursively */ |
1630 | if (m->dispatching_load_queue) | |
c1e1601e | 1631 | return 0; |
223dabab LP |
1632 | |
1633 | m->dispatching_load_queue = true; | |
1634 | ||
87f0e418 | 1635 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1636 | * tries to load its data until the queue is empty */ |
1637 | ||
595ed347 MS |
1638 | while ((u = m->load_queue)) { |
1639 | assert(u->in_load_queue); | |
034c6ed7 | 1640 | |
595ed347 | 1641 | unit_load(u); |
c1e1601e | 1642 | n++; |
60918275 LP |
1643 | } |
1644 | ||
223dabab | 1645 | m->dispatching_load_queue = false; |
c1e1601e | 1646 | return n; |
60918275 LP |
1647 | } |
1648 | ||
c2756a68 LP |
1649 | int manager_load_unit_prepare( |
1650 | Manager *m, | |
1651 | const char *name, | |
1652 | const char *path, | |
718db961 | 1653 | sd_bus_error *e, |
c2756a68 LP |
1654 | Unit **_ret) { |
1655 | ||
87f0e418 | 1656 | Unit *ret; |
7d17cfbc | 1657 | UnitType t; |
60918275 LP |
1658 | int r; |
1659 | ||
1660 | assert(m); | |
9e2f7c11 | 1661 | assert(name || path); |
7a6a095a | 1662 | assert(_ret); |
60918275 | 1663 | |
db06e3b6 LP |
1664 | /* This will prepare the unit for loading, but not actually |
1665 | * load anything from disk. */ | |
0301abf4 | 1666 | |
718db961 LP |
1667 | if (path && !is_path(path)) |
1668 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 LP |
1669 | |
1670 | if (!name) | |
2b6bf07d | 1671 | name = basename(path); |
9e2f7c11 | 1672 | |
7d17cfbc MS |
1673 | t = unit_name_to_type(name); |
1674 | ||
5d512d54 LN |
1675 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1676 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1677 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1678 | ||
718db961 | 1679 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1680 | } |
60918275 | 1681 | |
7d17cfbc MS |
1682 | ret = manager_get_unit(m, name); |
1683 | if (ret) { | |
034c6ed7 | 1684 | *_ret = ret; |
413d6313 | 1685 | return 1; |
034c6ed7 | 1686 | } |
60918275 | 1687 | |
7d17cfbc MS |
1688 | ret = unit_new(m, unit_vtable[t]->object_size); |
1689 | if (!ret) | |
60918275 LP |
1690 | return -ENOMEM; |
1691 | ||
7d17cfbc | 1692 | if (path) { |
ac155bb8 MS |
1693 | ret->fragment_path = strdup(path); |
1694 | if (!ret->fragment_path) { | |
0301abf4 LP |
1695 | unit_free(ret); |
1696 | return -ENOMEM; | |
1697 | } | |
7d17cfbc | 1698 | } |
0301abf4 | 1699 | |
1058cbf2 ZJS |
1700 | r = unit_add_name(ret, name); |
1701 | if (r < 0) { | |
87f0e418 | 1702 | unit_free(ret); |
1ffba6fe | 1703 | return r; |
60918275 LP |
1704 | } |
1705 | ||
87f0e418 | 1706 | unit_add_to_load_queue(ret); |
c1e1601e | 1707 | unit_add_to_dbus_queue(ret); |
949061f0 | 1708 | unit_add_to_gc_queue(ret); |
c1e1601e | 1709 | |
7a6a095a | 1710 | *_ret = ret; |
db06e3b6 LP |
1711 | |
1712 | return 0; | |
1713 | } | |
1714 | ||
c2756a68 LP |
1715 | int manager_load_unit( |
1716 | Manager *m, | |
1717 | const char *name, | |
1718 | const char *path, | |
718db961 | 1719 | sd_bus_error *e, |
c2756a68 LP |
1720 | Unit **_ret) { |
1721 | ||
db06e3b6 LP |
1722 | int r; |
1723 | ||
1724 | assert(m); | |
7a6a095a | 1725 | assert(_ret); |
db06e3b6 LP |
1726 | |
1727 | /* This will load the service information files, but not actually | |
1728 | * start any services or anything. */ | |
1729 | ||
c3090674 LP |
1730 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
1731 | if (r != 0) | |
db06e3b6 LP |
1732 | return r; |
1733 | ||
f50e0a01 | 1734 | manager_dispatch_load_queue(m); |
60918275 | 1735 | |
7a6a095a | 1736 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1737 | |
60918275 LP |
1738 | return 0; |
1739 | } | |
a66d02c3 | 1740 | |
cea8e32e | 1741 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1742 | Iterator i; |
a66d02c3 LP |
1743 | Job *j; |
1744 | ||
1745 | assert(s); | |
1746 | assert(f); | |
1747 | ||
034c6ed7 | 1748 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1749 | job_dump(j, f, prefix); |
a66d02c3 LP |
1750 | } |
1751 | ||
87f0e418 | 1752 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1753 | Iterator i; |
87f0e418 | 1754 | Unit *u; |
11dd41ce | 1755 | const char *t; |
a66d02c3 LP |
1756 | |
1757 | assert(s); | |
1758 | assert(f); | |
1759 | ||
87f0e418 | 1760 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 1761 | if (u->id == t) |
87f0e418 | 1762 | unit_dump(u, f, prefix); |
a66d02c3 | 1763 | } |
7fad411c | 1764 | |
ad75b9e7 LP |
1765 | void manager_dump(Manager *m, FILE *f, const char *prefix) { |
1766 | ManagerTimestamp q; | |
1767 | ||
1768 | assert(m); | |
1769 | assert(f); | |
1770 | ||
1771 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
1772 | char buf[FORMAT_TIMESTAMP_MAX]; | |
1773 | ||
1774 | if (dual_timestamp_is_set(m->timestamps + q)) | |
1775 | fprintf(f, "%sTimestamp %s: %s\n", | |
1776 | strempty(prefix), | |
1777 | manager_timestamp_to_string(q), | |
1778 | format_timestamp(buf, sizeof(buf), m->timestamps[q].realtime)); | |
1779 | } | |
1780 | ||
1781 | manager_dump_units(m, f, prefix); | |
1782 | manager_dump_jobs(m, f, prefix); | |
1783 | } | |
1784 | ||
713f6f90 LP |
1785 | int manager_get_dump_string(Manager *m, char **ret) { |
1786 | _cleanup_free_ char *dump = NULL; | |
1787 | _cleanup_fclose_ FILE *f = NULL; | |
1788 | size_t size; | |
1789 | int r; | |
1790 | ||
1791 | assert(m); | |
1792 | assert(ret); | |
1793 | ||
1794 | f = open_memstream(&dump, &size); | |
1795 | if (!f) | |
1796 | return -errno; | |
1797 | ||
0d536673 | 1798 | (void) __fsetlocking(f, FSETLOCKING_BYCALLER); |
713f6f90 LP |
1799 | |
1800 | manager_dump(m, f, NULL); | |
1801 | ||
1802 | r = fflush_and_check(f); | |
1803 | if (r < 0) | |
1804 | return r; | |
1805 | ||
1806 | f = safe_fclose(f); | |
1807 | ||
1808 | *ret = dump; | |
1809 | dump = NULL; | |
1810 | ||
1811 | return 0; | |
1812 | } | |
1813 | ||
7fad411c LP |
1814 | void manager_clear_jobs(Manager *m) { |
1815 | Job *j; | |
1816 | ||
1817 | assert(m); | |
1818 | ||
7fad411c | 1819 | while ((j = hashmap_first(m->jobs))) |
5273510e | 1820 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 1821 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 1822 | } |
83c60c9f | 1823 | |
752b5905 LP |
1824 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
1825 | Manager *m = userdata; | |
83c60c9f | 1826 | Job *j; |
034c6ed7 | 1827 | |
752b5905 LP |
1828 | assert(source); |
1829 | assert(m); | |
9152c765 | 1830 | |
034c6ed7 | 1831 | while ((j = m->run_queue)) { |
ac1135be | 1832 | assert(j->installed); |
034c6ed7 LP |
1833 | assert(j->in_run_queue); |
1834 | ||
1835 | job_run_and_invalidate(j); | |
9152c765 | 1836 | } |
034c6ed7 | 1837 | |
a0b64226 | 1838 | if (m->n_running_jobs > 0) |
03b717a3 MS |
1839 | manager_watch_jobs_in_progress(m); |
1840 | ||
31a7eb86 ZJS |
1841 | if (m->n_on_console > 0) |
1842 | manager_watch_idle_pipe(m); | |
1843 | ||
752b5905 | 1844 | return 1; |
c1e1601e LP |
1845 | } |
1846 | ||
9588bc32 | 1847 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
c1e1601e | 1848 | Job *j; |
595ed347 | 1849 | Unit *u; |
c1e1601e LP |
1850 | unsigned n = 0; |
1851 | ||
1852 | assert(m); | |
1853 | ||
1854 | if (m->dispatching_dbus_queue) | |
1855 | return 0; | |
1856 | ||
1857 | m->dispatching_dbus_queue = true; | |
1858 | ||
595ed347 MS |
1859 | while ((u = m->dbus_unit_queue)) { |
1860 | assert(u->in_dbus_queue); | |
c1e1601e | 1861 | |
595ed347 | 1862 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1863 | n++; |
1864 | } | |
1865 | ||
1866 | while ((j = m->dbus_job_queue)) { | |
1867 | assert(j->in_dbus_queue); | |
1868 | ||
1869 | bus_job_send_change_signal(j); | |
1870 | n++; | |
1871 | } | |
1872 | ||
1873 | m->dispatching_dbus_queue = false; | |
71445ae7 LP |
1874 | |
1875 | if (m->send_reloading_done) { | |
1876 | m->send_reloading_done = false; | |
1877 | ||
718db961 | 1878 | bus_manager_send_reloading(m, false); |
71445ae7 LP |
1879 | } |
1880 | ||
718db961 LP |
1881 | if (m->queued_message) |
1882 | bus_send_queued_message(m); | |
1883 | ||
c1e1601e | 1884 | return n; |
9152c765 LP |
1885 | } |
1886 | ||
d8fdc620 LP |
1887 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1888 | Manager *m = userdata; | |
1889 | char buf[PATH_MAX+1]; | |
1890 | ssize_t n; | |
1891 | ||
1892 | n = recv(fd, buf, sizeof(buf), 0); | |
1893 | if (n < 0) | |
1894 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
1895 | if (n == 0) { | |
1896 | log_error("Got zero-length cgroups agent message, ignoring."); | |
1897 | return 0; | |
1898 | } | |
1899 | if ((size_t) n >= sizeof(buf)) { | |
1900 | log_error("Got overly long cgroups agent message, ignoring."); | |
1901 | return 0; | |
1902 | } | |
1903 | ||
1904 | if (memchr(buf, 0, n)) { | |
1905 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
1906 | return 0; | |
1907 | } | |
1908 | buf[n] = 0; | |
1909 | ||
1910 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 1911 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
1912 | |
1913 | return 0; | |
1914 | } | |
1915 | ||
db256aab LP |
1916 | static void manager_invoke_notify_message( |
1917 | Manager *m, | |
1918 | Unit *u, | |
1919 | const struct ucred *ucred, | |
1920 | const char *buf, | |
1921 | FDSet *fds) { | |
1922 | ||
5ba6985b LP |
1923 | assert(m); |
1924 | assert(u); | |
db256aab | 1925 | assert(ucred); |
5ba6985b | 1926 | assert(buf); |
5ba6985b | 1927 | |
62a76913 | 1928 | if (u->notifygen == m->notifygen) /* Already invoked on this same unit in this same iteration? */ |
5ba6985b | 1929 | return; |
62a76913 LP |
1930 | u->notifygen = m->notifygen; |
1931 | ||
1932 | if (UNIT_VTABLE(u)->notify_message) { | |
1933 | _cleanup_strv_free_ char **tags = NULL; | |
1934 | ||
1935 | tags = strv_split(buf, NEWLINE); | |
1936 | if (!tags) { | |
1937 | log_oom(); | |
1938 | return; | |
1939 | } | |
5ba6985b | 1940 | |
db256aab | 1941 | UNIT_VTABLE(u)->notify_message(u, ucred, tags, fds); |
62a76913 LP |
1942 | |
1943 | } else if (DEBUG_LOGGING) { | |
a86b7675 ZJS |
1944 | _cleanup_free_ char *x = NULL, *y = NULL; |
1945 | ||
da5fb861 | 1946 | x = ellipsize(buf, 20, 90); |
a86b7675 | 1947 | if (x) |
da5fb861 LP |
1948 | y = cescape(x); |
1949 | ||
a86b7675 ZJS |
1950 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); |
1951 | } | |
5ba6985b LP |
1952 | } |
1953 | ||
718db961 | 1954 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 1955 | |
b215b0ed | 1956 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 1957 | Manager *m = userdata; |
b215b0ed DH |
1958 | char buf[NOTIFY_BUFFER_MAX+1]; |
1959 | struct iovec iovec = { | |
1960 | .iov_base = buf, | |
1961 | .iov_len = sizeof(buf)-1, | |
1962 | }; | |
1963 | union { | |
1964 | struct cmsghdr cmsghdr; | |
1965 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1966 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1967 | } control = {}; | |
1968 | struct msghdr msghdr = { | |
1969 | .msg_iov = &iovec, | |
1970 | .msg_iovlen = 1, | |
1971 | .msg_control = &control, | |
1972 | .msg_controllen = sizeof(control), | |
1973 | }; | |
1974 | ||
1975 | struct cmsghdr *cmsg; | |
1976 | struct ucred *ucred = NULL; | |
62a76913 LP |
1977 | _cleanup_free_ Unit **array_copy = NULL; |
1978 | Unit *u1, *u2, **array; | |
b215b0ed DH |
1979 | int r, *fd_array = NULL; |
1980 | unsigned n_fds = 0; | |
62a76913 | 1981 | bool found = false; |
8c47c732 LP |
1982 | ssize_t n; |
1983 | ||
1984 | assert(m); | |
718db961 LP |
1985 | assert(m->notify_fd == fd); |
1986 | ||
1987 | if (revents != EPOLLIN) { | |
1988 | log_warning("Got unexpected poll event for notify fd."); | |
1989 | return 0; | |
1990 | } | |
8c47c732 | 1991 | |
045a3d59 | 1992 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
b215b0ed | 1993 | if (n < 0) { |
c55ae51e LP |
1994 | if (IN_SET(errno, EAGAIN, EINTR)) |
1995 | return 0; /* Spurious wakeup, try again */ | |
8c47c732 | 1996 | |
c55ae51e LP |
1997 | /* If this is any other, real error, then let's stop processing this socket. This of course means we |
1998 | * won't take notification messages anymore, but that's still better than busy looping around this: | |
1999 | * being woken up over and over again but being unable to actually read the message off the socket. */ | |
2000 | return log_error_errno(errno, "Failed to receive notification message: %m"); | |
b215b0ed | 2001 | } |
a354329f | 2002 | |
b215b0ed DH |
2003 | CMSG_FOREACH(cmsg, &msghdr) { |
2004 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 2005 | |
b215b0ed DH |
2006 | fd_array = (int*) CMSG_DATA(cmsg); |
2007 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 2008 | |
b215b0ed DH |
2009 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
2010 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
2011 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 2012 | |
b215b0ed | 2013 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 2014 | } |
b215b0ed | 2015 | } |
a354329f | 2016 | |
b215b0ed DH |
2017 | if (n_fds > 0) { |
2018 | assert(fd_array); | |
a354329f | 2019 | |
b215b0ed DH |
2020 | r = fdset_new_array(&fds, fd_array, n_fds); |
2021 | if (r < 0) { | |
2022 | close_many(fd_array, n_fds); | |
9987750e FB |
2023 | log_oom(); |
2024 | return 0; | |
a354329f | 2025 | } |
b215b0ed | 2026 | } |
8c47c732 | 2027 | |
15e23e8c | 2028 | if (!ucred || !pid_is_valid(ucred->pid)) { |
b215b0ed DH |
2029 | log_warning("Received notify message without valid credentials. Ignoring."); |
2030 | return 0; | |
2031 | } | |
8c47c732 | 2032 | |
045a3d59 | 2033 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
2034 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
2035 | return 0; | |
2036 | } | |
8c47c732 | 2037 | |
875ca88d LP |
2038 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
2039 | * trailing NUL byte in the message, but don't expect it. */ | |
2040 | if (n > 1 && memchr(buf, 0, n-1)) { | |
2041 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | /* Make sure it's NUL-terminated. */ | |
b215b0ed | 2046 | buf[n] = 0; |
8c47c732 | 2047 | |
62a76913 LP |
2048 | /* Increase the generation counter used for filtering out duplicate unit invocations. */ |
2049 | m->notifygen++; | |
2050 | ||
2051 | /* Notify every unit that might be interested, which might be multiple. */ | |
b215b0ed | 2052 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); |
62a76913 LP |
2053 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(ucred->pid)); |
2054 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-ucred->pid)); | |
2055 | if (array) { | |
2056 | size_t k = 0; | |
5ba6985b | 2057 | |
62a76913 LP |
2058 | while (array[k]) |
2059 | k++; | |
5ba6985b | 2060 | |
62a76913 LP |
2061 | array_copy = newdup(Unit*, array, k+1); |
2062 | if (!array_copy) | |
2063 | log_oom(); | |
2064 | } | |
2065 | /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units | |
2066 | * make sure we only invoke each unit's handler once. */ | |
2067 | if (u1) { | |
2068 | manager_invoke_notify_message(m, u1, ucred, buf, fds); | |
2069 | found = true; | |
2070 | } | |
2071 | if (u2) { | |
2072 | manager_invoke_notify_message(m, u2, ucred, buf, fds); | |
2073 | found = true; | |
2074 | } | |
2075 | if (array_copy) | |
2076 | for (size_t i = 0; array_copy[i]; i++) { | |
2077 | manager_invoke_notify_message(m, array_copy[i], ucred, buf, fds); | |
2078 | found = true; | |
2079 | } | |
8c47c732 | 2080 | |
62a76913 LP |
2081 | if (!found) |
2082 | log_warning("Cannot find unit for notify message of PID "PID_FMT", ignoring.", ucred->pid); | |
a354329f | 2083 | |
b215b0ed | 2084 | if (fdset_size(fds) > 0) |
5fd2c135 | 2085 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2086 | |
2087 | return 0; | |
2088 | } | |
2089 | ||
62a76913 LP |
2090 | static void manager_invoke_sigchld_event( |
2091 | Manager *m, | |
2092 | Unit *u, | |
2093 | const siginfo_t *si) { | |
36f20ae3 | 2094 | |
5ba6985b LP |
2095 | assert(m); |
2096 | assert(u); | |
2097 | assert(si); | |
2098 | ||
62a76913 LP |
2099 | /* Already invoked the handler of this unit in this iteration? Then don't process this again */ |
2100 | if (u->sigchldgen == m->sigchldgen) | |
2101 | return; | |
2102 | u->sigchldgen = m->sigchldgen; | |
5ba6985b | 2103 | |
62a76913 | 2104 | log_unit_debug(u, "Child "PID_FMT" belongs to %s.", si->si_pid, u->id); |
5ba6985b | 2105 | unit_unwatch_pid(u, si->si_pid); |
e57051f5 | 2106 | |
62a76913 LP |
2107 | if (UNIT_VTABLE(u)->sigchld_event) |
2108 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
5ba6985b LP |
2109 | } |
2110 | ||
575b300b LP |
2111 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata) { |
2112 | Manager *m = userdata; | |
2113 | siginfo_t si = {}; | |
2114 | int r; | |
2115 | ||
2116 | assert(source); | |
9152c765 LP |
2117 | assert(m); |
2118 | ||
575b300b LP |
2119 | /* First we call waitd() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it |
2120 | * while it is a zombie. */ | |
9152c765 | 2121 | |
575b300b | 2122 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { |
acbb0225 | 2123 | |
575b300b LP |
2124 | if (errno == ECHILD) |
2125 | goto turn_off; | |
acbb0225 | 2126 | |
575b300b LP |
2127 | log_error_errno(errno, "Failed to peek for child with waitid(), ignoring: %m"); |
2128 | return 0; | |
2129 | } | |
4112df16 | 2130 | |
575b300b LP |
2131 | if (si.si_pid <= 0) |
2132 | goto turn_off; | |
2133 | ||
2134 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { | |
62a76913 | 2135 | _cleanup_free_ Unit **array_copy = NULL; |
575b300b | 2136 | _cleanup_free_ char *name = NULL; |
62a76913 | 2137 | Unit *u1, *u2, **array; |
575b300b LP |
2138 | |
2139 | (void) get_process_comm(si.si_pid, &name); | |
2140 | ||
2141 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
2142 | si.si_pid, strna(name), | |
2143 | sigchld_code_to_string(si.si_code), | |
2144 | si.si_status, | |
2145 | strna(si.si_code == CLD_EXITED | |
2146 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2147 | : signal_to_string(si.si_status))); | |
2148 | ||
62a76913 LP |
2149 | /* Increase the generation counter used for filtering out duplicate unit invocations */ |
2150 | m->sigchldgen++; | |
2151 | ||
2152 | /* And now figure out the unit this belongs to, it might be multiple... */ | |
575b300b | 2153 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
62a76913 LP |
2154 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(si.si_pid)); |
2155 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-si.si_pid)); | |
2156 | if (array) { | |
2157 | size_t n = 0; | |
2158 | ||
2159 | /* Cound how many entries the array has */ | |
2160 | while (array[n]) | |
2161 | n++; | |
2162 | ||
2163 | /* Make a copy of the array so that we don't trip up on the array changing beneath us */ | |
2164 | array_copy = newdup(Unit*, array, n+1); | |
2165 | if (!array_copy) | |
2166 | log_oom(); | |
2167 | } | |
2168 | ||
2169 | /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but | |
2170 | * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for | |
2171 | * each iteration. */ | |
575b300b | 2172 | if (u1) |
62a76913 LP |
2173 | manager_invoke_sigchld_event(m, u1, &si); |
2174 | if (u2) | |
2175 | manager_invoke_sigchld_event(m, u2, &si); | |
2176 | if (array_copy) | |
2177 | for (size_t i = 0; array_copy[i]; i++) | |
2178 | manager_invoke_sigchld_event(m, array_copy[i], &si); | |
575b300b | 2179 | } |
9152c765 | 2180 | |
575b300b LP |
2181 | /* And now, we actually reap the zombie. */ |
2182 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2183 | log_error_errno(errno, "Failed to dequeue child, ignoring: %m"); | |
2184 | return 0; | |
2185 | } | |
9152c765 | 2186 | |
575b300b | 2187 | return 0; |
8c47c732 | 2188 | |
575b300b LP |
2189 | turn_off: |
2190 | /* All children processed for now, turn off event source */ | |
4112df16 | 2191 | |
575b300b LP |
2192 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); |
2193 | if (r < 0) | |
2194 | return log_error_errno(r, "Failed to disable SIGCHLD event source: %m"); | |
9152c765 LP |
2195 | |
2196 | return 0; | |
2197 | } | |
2198 | ||
c75fbada | 2199 | static void manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 2200 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 2201 | int r; |
398ef8ba | 2202 | |
f2341e0a | 2203 | log_debug("Activating special unit %s", name); |
1e001f52 | 2204 | |
4bd29fe5 | 2205 | r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL); |
bd0af849 | 2206 | if (r < 0) |
f2341e0a | 2207 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
28247076 LP |
2208 | } |
2209 | ||
24dd31c1 LN |
2210 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2211 | /* If the user presses C-A-D more than | |
2212 | * 7 times within 2s, we reboot/shutdown immediately, | |
2213 | * unless it was disabled in system.conf */ | |
2214 | ||
ae8c7939 | 2215 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 2216 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 LN |
2217 | else |
2218 | emergency_action(m, m->cad_burst_action, NULL, | |
2219 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); | |
24dd31c1 LN |
2220 | } |
2221 | ||
718db961 LP |
2222 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2223 | Manager *m = userdata; | |
9152c765 LP |
2224 | ssize_t n; |
2225 | struct signalfd_siginfo sfsi; | |
dacd6cee | 2226 | int r; |
9152c765 LP |
2227 | |
2228 | assert(m); | |
718db961 LP |
2229 | assert(m->signal_fd == fd); |
2230 | ||
2231 | if (revents != EPOLLIN) { | |
2232 | log_warning("Got unexpected events from signal file descriptor."); | |
2233 | return 0; | |
2234 | } | |
9152c765 | 2235 | |
575b300b LP |
2236 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
2237 | if (n != sizeof(sfsi)) { | |
2238 | if (n >= 0) { | |
2239 | log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n); | |
2240 | return 0; | |
2241 | } | |
9152c765 | 2242 | |
575b300b LP |
2243 | if (IN_SET(errno, EINTR, EAGAIN)) |
2244 | return 0; | |
9152c765 | 2245 | |
575b300b LP |
2246 | /* We return an error here, which will kill this handler, |
2247 | * to avoid a busy loop on read error. */ | |
2248 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
2249 | } | |
9152c765 | 2250 | |
575b300b LP |
2251 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
2252 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) | |
2253 | ? LOG_DEBUG : LOG_INFO, | |
2254 | &sfsi); | |
1e001f52 | 2255 | |
575b300b | 2256 | switch (sfsi.ssi_signo) { |
b9cd2ec1 | 2257 | |
575b300b LP |
2258 | case SIGCHLD: |
2259 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
2260 | if (r < 0) | |
2261 | log_warning_errno(r, "Failed to enable SIGCHLD even source, ignoring: %m"); | |
b9cd2ec1 | 2262 | |
575b300b | 2263 | break; |
84e9af1e | 2264 | |
575b300b LP |
2265 | case SIGTERM: |
2266 | if (MANAGER_IS_SYSTEM(m)) { | |
2267 | /* This is for compatibility with the | |
2268 | * original sysvinit */ | |
2269 | r = verify_run_space_and_log("Refusing to reexecute"); | |
2270 | if (r >= 0) | |
2271 | m->exit_code = MANAGER_REEXECUTE; | |
a1b256b0 | 2272 | break; |
575b300b | 2273 | } |
84e9af1e | 2274 | |
575b300b LP |
2275 | _fallthrough_; |
2276 | case SIGINT: | |
2277 | if (MANAGER_IS_SYSTEM(m)) | |
2278 | manager_handle_ctrl_alt_del(m); | |
2279 | else | |
2280 | manager_start_target(m, SPECIAL_EXIT_TARGET, | |
2281 | JOB_REPLACE_IRREVERSIBLY); | |
2282 | break; | |
84e9af1e | 2283 | |
575b300b LP |
2284 | case SIGWINCH: |
2285 | if (MANAGER_IS_SYSTEM(m)) | |
2286 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); | |
84e9af1e | 2287 | |
575b300b LP |
2288 | /* This is a nop on non-init */ |
2289 | break; | |
84e9af1e | 2290 | |
575b300b LP |
2291 | case SIGPWR: |
2292 | if (MANAGER_IS_SYSTEM(m)) | |
2293 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); | |
6632c602 | 2294 | |
575b300b LP |
2295 | /* This is a nop on non-init */ |
2296 | break; | |
57ee42ce | 2297 | |
575b300b LP |
2298 | case SIGUSR1: { |
2299 | Unit *u; | |
57ee42ce | 2300 | |
575b300b | 2301 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); |
57ee42ce | 2302 | |
575b300b LP |
2303 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { |
2304 | log_info("Trying to reconnect to bus..."); | |
2305 | bus_init(m, true); | |
2306 | } | |
2307 | ||
2308 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2309 | log_info("Loading D-Bus service..."); | |
2310 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); | |
2311 | } | |
57ee42ce | 2312 | |
575b300b LP |
2313 | break; |
2314 | } | |
2315 | ||
2316 | case SIGUSR2: { | |
2317 | _cleanup_free_ char *dump = NULL; | |
2318 | ||
2319 | r = manager_get_dump_string(m, &dump); | |
2320 | if (r < 0) { | |
2321 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); | |
57ee42ce LP |
2322 | break; |
2323 | } | |
2324 | ||
575b300b LP |
2325 | log_dump(LOG_INFO, dump); |
2326 | break; | |
2327 | } | |
2149e37c | 2328 | |
575b300b LP |
2329 | case SIGHUP: |
2330 | r = verify_run_space_and_log("Refusing to reload"); | |
2331 | if (r >= 0) | |
2332 | m->exit_code = MANAGER_RELOAD; | |
2333 | break; | |
2334 | ||
2335 | default: { | |
2336 | ||
2337 | /* Starting SIGRTMIN+0 */ | |
2338 | static const struct { | |
2339 | const char *target; | |
2340 | JobMode mode; | |
2341 | } target_table[] = { | |
2342 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2343 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2344 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2345 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2346 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2347 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2348 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2349 | }; | |
2350 | ||
2351 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2352 | static const ManagerExitCode code_table[] = { | |
2353 | [0] = MANAGER_HALT, | |
2354 | [1] = MANAGER_POWEROFF, | |
2355 | [2] = MANAGER_REBOOT, | |
2356 | [3] = MANAGER_KEXEC, | |
2357 | }; | |
b2cdc666 | 2358 | |
575b300b LP |
2359 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && |
2360 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
2361 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
2362 | manager_start_target(m, target_table[idx].target, | |
2363 | target_table[idx].mode); | |
1005d14f | 2364 | break; |
2149e37c | 2365 | } |
1005d14f | 2366 | |
575b300b LP |
2367 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2368 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2369 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2370 | break; | |
2371 | } | |
2372 | ||
2373 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
2374 | ||
2375 | case 20: | |
2376 | manager_set_show_status(m, SHOW_STATUS_YES); | |
a16e1123 LP |
2377 | break; |
2378 | ||
575b300b LP |
2379 | case 21: |
2380 | manager_set_show_status(m, SHOW_STATUS_NO); | |
2381 | break; | |
7d793605 | 2382 | |
575b300b LP |
2383 | case 22: |
2384 | log_set_max_level(LOG_DEBUG); | |
2385 | log_info("Setting log level to debug."); | |
2386 | break; | |
2387 | ||
2388 | case 23: | |
2389 | log_set_max_level(LOG_INFO); | |
2390 | log_info("Setting log level to info."); | |
2391 | break; | |
0003d1ab | 2392 | |
575b300b LP |
2393 | case 24: |
2394 | if (MANAGER_IS_USER(m)) { | |
2395 | m->exit_code = MANAGER_EXIT; | |
2396 | return 0; | |
0658666b | 2397 | } |
9152c765 | 2398 | |
575b300b LP |
2399 | /* This is a nop on init */ |
2400 | break; | |
2401 | ||
2402 | case 26: | |
2403 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
2404 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
2405 | log_notice("Setting log target to journal-or-kmsg."); | |
2406 | break; | |
2407 | ||
2408 | case 27: | |
2409 | log_set_target(LOG_TARGET_CONSOLE); | |
2410 | log_notice("Setting log target to console."); | |
2411 | break; | |
2412 | ||
2413 | case 28: | |
2414 | log_set_target(LOG_TARGET_KMSG); | |
2415 | log_notice("Setting log target to kmsg."); | |
2416 | break; | |
2417 | ||
2418 | default: | |
2419 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
2420 | } | |
2421 | }} | |
034c6ed7 LP |
2422 | |
2423 | return 0; | |
2424 | } | |
2425 | ||
718db961 LP |
2426 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2427 | Manager *m = userdata; | |
2428 | Iterator i; | |
2429 | Unit *u; | |
034c6ed7 LP |
2430 | |
2431 | assert(m); | |
718db961 | 2432 | assert(m->time_change_fd == fd); |
034c6ed7 | 2433 | |
a80c1575 | 2434 | log_struct(LOG_DEBUG, |
2b044526 | 2435 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
e2cc6eca | 2436 | LOG_MESSAGE("Time has been changed"), |
718db961 | 2437 | NULL); |
034c6ed7 | 2438 | |
718db961 LP |
2439 | /* Restart the watch */ |
2440 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
03e334a1 | 2441 | m->time_change_fd = safe_close(m->time_change_fd); |
ef734fd6 | 2442 | |
718db961 | 2443 | manager_setup_time_change(m); |
4e434314 | 2444 | |
718db961 LP |
2445 | HASHMAP_FOREACH(u, m->units, i) |
2446 | if (UNIT_VTABLE(u)->time_change) | |
2447 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2448 | |
718db961 LP |
2449 | return 0; |
2450 | } | |
ea430986 | 2451 | |
718db961 LP |
2452 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2453 | Manager *m = userdata; | |
8742514c | 2454 | |
718db961 LP |
2455 | assert(m); |
2456 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2457 | |
5a69973f LP |
2458 | /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's |
2459 | * now turn off any further console output if there's at least one service that needs console access, so that | |
2460 | * from now on our own output should not spill into that service's output anymore. After all, we support | |
2461 | * Type=idle only to beautify console output and it generally is set on services that want to own the console | |
2462 | * exclusively without our interference. */ | |
718db961 | 2463 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2464 | |
5a69973f LP |
2465 | /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer |
2466 | * by closing the pipes towards them, which is what they are waiting for. */ | |
718db961 | 2467 | manager_close_idle_pipe(m); |
03b717a3 | 2468 | |
718db961 LP |
2469 | return 0; |
2470 | } | |
31a7eb86 | 2471 | |
718db961 LP |
2472 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2473 | Manager *m = userdata; | |
fd08a840 ZJS |
2474 | int r; |
2475 | uint64_t next; | |
31a7eb86 | 2476 | |
718db961 | 2477 | assert(m); |
fd08a840 | 2478 | assert(source); |
9152c765 | 2479 | |
718db961 | 2480 | manager_print_jobs_in_progress(m); |
fd08a840 ZJS |
2481 | |
2482 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
2483 | r = sd_event_source_set_time(source, next); | |
2484 | if (r < 0) | |
2485 | return r; | |
2486 | ||
2487 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2488 | } |
2489 | ||
2490 | int manager_loop(Manager *m) { | |
2491 | int r; | |
9152c765 | 2492 | |
fac9f8df | 2493 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2494 | |
9152c765 | 2495 | assert(m); |
f755e3b7 | 2496 | m->exit_code = MANAGER_OK; |
9152c765 | 2497 | |
fe51822e | 2498 | /* Release the path cache */ |
97044145 | 2499 | m->unit_path_cache = set_free_free(m->unit_path_cache); |
fe51822e | 2500 | |
b0c918b9 LP |
2501 | manager_check_finished(m); |
2502 | ||
575b300b LP |
2503 | /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */ |
2504 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
e96d6be7 | 2505 | if (r < 0) |
575b300b | 2506 | return log_error_errno(r, "Failed to enable SIGCHLD event source: %m"); |
a4312405 | 2507 | |
f755e3b7 | 2508 | while (m->exit_code == MANAGER_OK) { |
718db961 | 2509 | usec_t wait_usec; |
9152c765 | 2510 | |
463d0d15 | 2511 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) |
e96d6be7 LP |
2512 | watchdog_ping(); |
2513 | ||
ea430986 LP |
2514 | if (!ratelimit_test(&rl)) { |
2515 | /* Yay, something is going seriously wrong, pause a little */ | |
2516 | log_warning("Looping too fast. Throttling execution a little."); | |
2517 | sleep(1); | |
2518 | } | |
2519 | ||
37a8e683 | 2520 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2521 | continue; |
2522 | ||
c5a97ed1 LP |
2523 | if (manager_dispatch_gc_job_queue(m) > 0) |
2524 | continue; | |
2525 | ||
2526 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
2527 | continue; |
2528 | ||
cf1265e1 | 2529 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2530 | continue; |
034c6ed7 | 2531 | |
91a6073e | 2532 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
2533 | continue; |
2534 | ||
c1e1601e | 2535 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2536 | continue; |
ea430986 | 2537 | |
c757a65b | 2538 | /* Sleep for half the watchdog time */ |
463d0d15 | 2539 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { |
718db961 LP |
2540 | wait_usec = m->runtime_watchdog / 2; |
2541 | if (wait_usec <= 0) | |
2542 | wait_usec = 1; | |
c757a65b | 2543 | } else |
3a43da28 | 2544 | wait_usec = USEC_INFINITY; |
9152c765 | 2545 | |
718db961 | 2546 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2547 | if (r < 0) |
2548 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2549 | } |
957ca890 | 2550 | |
a16e1123 | 2551 | return m->exit_code; |
83c60c9f | 2552 | } |
ea430986 | 2553 | |
718db961 | 2554 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2555 | _cleanup_free_ char *n = NULL; |
4b58153d | 2556 | sd_id128_t invocation_id; |
ea430986 | 2557 | Unit *u; |
80fbf05e | 2558 | int r; |
ea430986 LP |
2559 | |
2560 | assert(m); | |
2561 | assert(s); | |
2562 | assert(_u); | |
2563 | ||
ede3a796 LP |
2564 | r = unit_name_from_dbus_path(s, &n); |
2565 | if (r < 0) | |
2566 | return r; | |
ea430986 | 2567 | |
4b58153d LP |
2568 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
2569 | * as invocation ID. */ | |
2570 | r = sd_id128_from_string(n, &invocation_id); | |
2571 | if (r >= 0) { | |
2572 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
2573 | if (u) { | |
2574 | *_u = u; | |
2575 | return 0; | |
2576 | } | |
2577 | ||
2578 | 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)); | |
2579 | } | |
2580 | ||
00c83b43 LP |
2581 | /* If this didn't work, we check if this is a unit name */ |
2582 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
2583 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is neither a valid invocation ID nor unit name.", n); | |
2584 | ||
80fbf05e | 2585 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
2586 | if (r < 0) |
2587 | return r; | |
ea430986 LP |
2588 | |
2589 | *_u = u; | |
ea430986 LP |
2590 | return 0; |
2591 | } | |
86fbf370 LP |
2592 | |
2593 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 2594 | const char *p; |
86fbf370 | 2595 | unsigned id; |
718db961 | 2596 | Job *j; |
86fbf370 LP |
2597 | int r; |
2598 | ||
2599 | assert(m); | |
2600 | assert(s); | |
2601 | assert(_j); | |
2602 | ||
718db961 LP |
2603 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
2604 | if (!p) | |
86fbf370 LP |
2605 | return -EINVAL; |
2606 | ||
718db961 | 2607 | r = safe_atou(p, &id); |
8742514c | 2608 | if (r < 0) |
86fbf370 LP |
2609 | return r; |
2610 | ||
8742514c LP |
2611 | j = manager_get_job(m, id); |
2612 | if (!j) | |
86fbf370 LP |
2613 | return -ENOENT; |
2614 | ||
2615 | *_j = j; | |
2616 | ||
2617 | return 0; | |
2618 | } | |
dfcd764e | 2619 | |
4927fcae | 2620 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2621 | |
349cc4a5 | 2622 | #if HAVE_AUDIT |
2ba11090 | 2623 | _cleanup_free_ char *p = NULL; |
0aa281df | 2624 | const char *msg; |
7410616c | 2625 | int audit_fd, r; |
e537352b | 2626 | |
463d0d15 | 2627 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
2628 | return; |
2629 | ||
c1165f82 LP |
2630 | audit_fd = get_audit_fd(); |
2631 | if (audit_fd < 0) | |
e537352b LP |
2632 | return; |
2633 | ||
bbd3a7ba LP |
2634 | /* Don't generate audit events if the service was already |
2635 | * started and we're just deserializing */ | |
2c289ea8 | 2636 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
2637 | return; |
2638 | ||
ac155bb8 | 2639 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
2640 | return; |
2641 | ||
7410616c LP |
2642 | r = unit_name_to_prefix_and_instance(u->id, &p); |
2643 | if (r < 0) { | |
2644 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
2645 | return; |
2646 | } | |
2647 | ||
63c372cb | 2648 | msg = strjoina("unit=", p); |
0aa281df LP |
2649 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
2650 | if (errno == EPERM) | |
391ade86 | 2651 | /* We aren't allowed to send audit messages? |
44785992 | 2652 | * Then let's not retry again. */ |
c1165f82 | 2653 | close_audit_fd(); |
0aa281df | 2654 | else |
56f64d95 | 2655 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 2656 | } |
4927fcae | 2657 | #endif |
e537352b | 2658 | |
e537352b LP |
2659 | } |
2660 | ||
e983b760 | 2661 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 2662 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
2663 | _cleanup_free_ char *message = NULL; |
2664 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 2665 | int n = 0; |
e983b760 LP |
2666 | |
2667 | /* Don't generate plymouth events if the service was already | |
2668 | * started and we're just deserializing */ | |
2c289ea8 | 2669 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
2670 | return; |
2671 | ||
463d0d15 | 2672 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
2673 | return; |
2674 | ||
75f86906 | 2675 | if (detect_container() > 0) |
3772995a LP |
2676 | return; |
2677 | ||
ec2ce0c5 | 2678 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
2679 | return; |
2680 | ||
2681 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2682 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
2683 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
2684 | if (fd < 0) { | |
56f64d95 | 2685 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
2686 | return; |
2687 | } | |
2688 | ||
fc2fffe7 | 2689 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
e983b760 | 2690 | |
2ba11090 | 2691 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) |
56f64d95 | 2692 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 2693 | return; |
e983b760 LP |
2694 | } |
2695 | ||
ac155bb8 | 2696 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 2697 | log_oom(); |
2ba11090 | 2698 | return; |
e983b760 LP |
2699 | } |
2700 | ||
2701 | errno = 0; | |
2ba11090 ZJS |
2702 | if (write(fd, message, n + 1) != n + 1) |
2703 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
56f64d95 | 2704 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
2705 | } |
2706 | ||
d8d5ab98 | 2707 | int manager_open_serialization(Manager *m, FILE **_f) { |
504afd7c | 2708 | int fd; |
a16e1123 LP |
2709 | FILE *f; |
2710 | ||
2711 | assert(_f); | |
2712 | ||
504afd7c ZJS |
2713 | fd = open_serialization_fd("systemd-state"); |
2714 | if (fd < 0) | |
2715 | return fd; | |
a16e1123 | 2716 | |
01e10de3 | 2717 | f = fdopen(fd, "w+"); |
d86f9d52 | 2718 | if (!f) { |
03e334a1 | 2719 | safe_close(fd); |
a16e1123 | 2720 | return -errno; |
d86f9d52 | 2721 | } |
a16e1123 LP |
2722 | |
2723 | *_f = f; | |
a16e1123 LP |
2724 | return 0; |
2725 | } | |
2726 | ||
b3680f49 | 2727 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { |
9f9f0342 LP |
2728 | ManagerTimestamp q; |
2729 | const char *t; | |
a16e1123 LP |
2730 | Iterator i; |
2731 | Unit *u; | |
a16e1123 LP |
2732 | int r; |
2733 | ||
2734 | assert(m); | |
2735 | assert(f); | |
2736 | assert(fds); | |
2737 | ||
313cefa1 | 2738 | m->n_reloading++; |
38c52d46 | 2739 | |
1fa2f38f | 2740 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); |
33c5fae9 LP |
2741 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
2742 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
0c2826c6 ZJS |
2743 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); |
2744 | fprintf(f, "ready-sent=%s\n", yes_no(m->ready_sent)); | |
d8eb10d6 | 2745 | fprintf(f, "taint-logged=%s\n", yes_no(m->taint_logged)); |
2a12e32e | 2746 | fprintf(f, "service-watchdogs=%s\n", yes_no(m->service_watchdogs)); |
01d67b43 | 2747 | |
9f9f0342 LP |
2748 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { |
2749 | /* The userspace and finish timestamps only apply to the host system, hence only serialize them there */ | |
2750 | if (in_initrd() && IN_SET(q, MANAGER_TIMESTAMP_USERSPACE, MANAGER_TIMESTAMP_FINISH)) | |
2751 | continue; | |
f38ed060 | 2752 | |
9f9f0342 LP |
2753 | t = manager_timestamp_to_string(q); |
2754 | { | |
fbd0b64f | 2755 | char field[strlen(t) + STRLEN("-timestamp") + 1]; |
9f9f0342 LP |
2756 | strcpy(stpcpy(field, t), "-timestamp"); |
2757 | dual_timestamp_serialize(f, field, m->timestamps + q); | |
2758 | } | |
f38ed060 | 2759 | } |
47a483a1 | 2760 | |
fe902fa4 ZJS |
2761 | if (!switching_root) |
2762 | (void) serialize_environment(f, m->environment); | |
4a9fd066 | 2763 | |
d86f9d52 LP |
2764 | if (m->notify_fd >= 0) { |
2765 | int copy; | |
2766 | ||
2767 | copy = fdset_put_dup(fds, m->notify_fd); | |
2768 | if (copy < 0) | |
2769 | return copy; | |
2770 | ||
2771 | fprintf(f, "notify-fd=%i\n", copy); | |
2772 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2773 | } | |
2774 | ||
d8fdc620 LP |
2775 | if (m->cgroups_agent_fd >= 0) { |
2776 | int copy; | |
2777 | ||
2778 | copy = fdset_put_dup(fds, m->cgroups_agent_fd); | |
2779 | if (copy < 0) | |
2780 | return copy; | |
2781 | ||
2782 | fprintf(f, "cgroups-agent-fd=%i\n", copy); | |
2783 | } | |
2784 | ||
00d9ef85 LP |
2785 | if (m->user_lookup_fds[0] >= 0) { |
2786 | int copy0, copy1; | |
2787 | ||
2788 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
2789 | if (copy0 < 0) | |
2790 | return copy0; | |
2791 | ||
2792 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
2793 | if (copy1 < 0) | |
2794 | return copy1; | |
2795 | ||
2796 | fprintf(f, "user-lookup=%i %i\n", copy0, copy1); | |
2797 | } | |
2798 | ||
05a98afd | 2799 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 2800 | |
29206d46 LP |
2801 | r = dynamic_user_serialize(m, f, fds); |
2802 | if (r < 0) | |
2803 | return r; | |
2804 | ||
00d9ef85 LP |
2805 | manager_serialize_uid_refs(m, f); |
2806 | manager_serialize_gid_refs(m, f); | |
2807 | ||
e8a565cb YW |
2808 | r = exec_runtime_serialize(m, f, fds); |
2809 | if (r < 0) | |
2810 | return r; | |
2811 | ||
0d536673 | 2812 | (void) fputc('\n', f); |
f2382a94 | 2813 | |
a16e1123 | 2814 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 2815 | if (u->id != t) |
a16e1123 LP |
2816 | continue; |
2817 | ||
a16e1123 | 2818 | /* Start marker */ |
0d536673 LP |
2819 | fputs(u->id, f); |
2820 | fputc('\n', f); | |
a16e1123 | 2821 | |
6fa48533 LP |
2822 | r = unit_serialize(u, f, fds, !switching_root); |
2823 | if (r < 0) { | |
313cefa1 | 2824 | m->n_reloading--; |
a16e1123 | 2825 | return r; |
38c52d46 | 2826 | } |
a16e1123 LP |
2827 | } |
2828 | ||
a7556052 | 2829 | assert(m->n_reloading > 0); |
313cefa1 | 2830 | m->n_reloading--; |
38c52d46 | 2831 | |
a16e1123 LP |
2832 | if (ferror(f)) |
2833 | return -EIO; | |
2834 | ||
b23de6af LP |
2835 | r = bus_fdset_add_all(m, fds); |
2836 | if (r < 0) | |
2837 | return r; | |
2838 | ||
a16e1123 LP |
2839 | return 0; |
2840 | } | |
2841 | ||
2842 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2843 | int r = 0; | |
2844 | ||
2845 | assert(m); | |
2846 | assert(f); | |
2847 | ||
2848 | log_debug("Deserializing state..."); | |
2849 | ||
313cefa1 | 2850 | m->n_reloading++; |
82c64bf5 | 2851 | |
10f8e83c | 2852 | for (;;) { |
d233c99a ZJS |
2853 | char line[LINE_MAX]; |
2854 | const char *val, *l; | |
10f8e83c LP |
2855 | |
2856 | if (!fgets(line, sizeof(line), f)) { | |
2857 | if (feof(f)) | |
2858 | r = 0; | |
2859 | else | |
2860 | r = -errno; | |
2861 | ||
2862 | goto finish; | |
2863 | } | |
2864 | ||
2865 | char_array_0(line); | |
2866 | l = strstrip(line); | |
2867 | ||
2868 | if (l[0] == 0) | |
2869 | break; | |
2870 | ||
fb4650aa | 2871 | if ((val = startswith(l, "current-job-id="))) { |
01d67b43 LP |
2872 | uint32_t id; |
2873 | ||
fb4650aa | 2874 | if (safe_atou32(val, &id) < 0) |
62c460c6 | 2875 | log_notice("Failed to parse current job id value %s", val); |
01d67b43 LP |
2876 | else |
2877 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 2878 | |
fb4650aa | 2879 | } else if ((val = startswith(l, "n-installed-jobs="))) { |
33c5fae9 LP |
2880 | uint32_t n; |
2881 | ||
fb4650aa | 2882 | if (safe_atou32(val, &n) < 0) |
62c460c6 | 2883 | log_notice("Failed to parse installed jobs counter %s", val); |
33c5fae9 LP |
2884 | else |
2885 | m->n_installed_jobs += n; | |
718db961 | 2886 | |
fb4650aa | 2887 | } else if ((val = startswith(l, "n-failed-jobs="))) { |
33c5fae9 LP |
2888 | uint32_t n; |
2889 | ||
fb4650aa | 2890 | if (safe_atou32(val, &n) < 0) |
62c460c6 | 2891 | log_notice("Failed to parse failed jobs counter %s", val); |
33c5fae9 LP |
2892 | else |
2893 | m->n_failed_jobs += n; | |
718db961 | 2894 | |
fb4650aa | 2895 | } else if ((val = startswith(l, "taint-usr="))) { |
01d67b43 LP |
2896 | int b; |
2897 | ||
fb4650aa | 2898 | b = parse_boolean(val); |
e3dd987c | 2899 | if (b < 0) |
62c460c6 | 2900 | log_notice("Failed to parse taint /usr flag %s", val); |
01d67b43 LP |
2901 | else |
2902 | m->taint_usr = m->taint_usr || b; | |
718db961 | 2903 | |
0c2826c6 ZJS |
2904 | } else if ((val = startswith(l, "ready-sent="))) { |
2905 | int b; | |
2906 | ||
2907 | b = parse_boolean(val); | |
2908 | if (b < 0) | |
2909 | log_notice("Failed to parse ready-sent flag %s", val); | |
2910 | else | |
2911 | m->ready_sent = m->ready_sent || b; | |
2912 | ||
d8eb10d6 ZJS |
2913 | } else if ((val = startswith(l, "taint-logged="))) { |
2914 | int b; | |
2915 | ||
2916 | b = parse_boolean(val); | |
2917 | if (b < 0) | |
2918 | log_notice("Failed to parse taint-logged flag %s", val); | |
2919 | else | |
2920 | m->taint_logged = m->taint_logged || b; | |
2921 | ||
2a12e32e JK |
2922 | } else if ((val = startswith(l, "service-watchdogs="))) { |
2923 | int b; | |
2924 | ||
2925 | b = parse_boolean(val); | |
2926 | if (b < 0) | |
2927 | log_notice("Failed to parse service-watchdogs flag %s", val); | |
2928 | else | |
2929 | m->service_watchdogs = b; | |
2930 | ||
9f9f0342 | 2931 | } else if (startswith(l, "env=")) { |
fe902fa4 | 2932 | r = deserialize_environment(&m->environment, l); |
d233c99a ZJS |
2933 | if (r == -ENOMEM) |
2934 | goto finish; | |
527b7a42 | 2935 | if (r < 0) |
d233c99a | 2936 | log_notice_errno(r, "Failed to parse environment entry: \"%s\": %m", l); |
e3dd987c | 2937 | |
fb4650aa | 2938 | } else if ((val = startswith(l, "notify-fd="))) { |
d86f9d52 LP |
2939 | int fd; |
2940 | ||
fb4650aa | 2941 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
62c460c6 | 2942 | log_notice("Failed to parse notify fd: \"%s\"", val); |
d86f9d52 | 2943 | else { |
03e334a1 LP |
2944 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
2945 | safe_close(m->notify_fd); | |
d86f9d52 LP |
2946 | m->notify_fd = fdset_remove(fds, fd); |
2947 | } | |
2948 | ||
fb4650aa | 2949 | } else if ((val = startswith(l, "notify-socket="))) { |
d86f9d52 LP |
2950 | char *n; |
2951 | ||
fb4650aa | 2952 | n = strdup(val); |
d86f9d52 LP |
2953 | if (!n) { |
2954 | r = -ENOMEM; | |
2955 | goto finish; | |
2956 | } | |
2957 | ||
2958 | free(m->notify_socket); | |
2959 | m->notify_socket = n; | |
2960 | ||
fb4650aa | 2961 | } else if ((val = startswith(l, "cgroups-agent-fd="))) { |
d8fdc620 LP |
2962 | int fd; |
2963 | ||
fb4650aa | 2964 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
62c460c6 | 2965 | log_notice("Failed to parse cgroups agent fd: %s", val); |
d8fdc620 LP |
2966 | else { |
2967 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
2968 | safe_close(m->cgroups_agent_fd); | |
2969 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
2970 | } | |
2971 | ||
fb4650aa | 2972 | } else if ((val = startswith(l, "user-lookup="))) { |
00d9ef85 LP |
2973 | int fd0, fd1; |
2974 | ||
fb4650aa | 2975 | if (sscanf(val, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) |
62c460c6 | 2976 | log_notice("Failed to parse user lookup fd: %s", val); |
00d9ef85 LP |
2977 | else { |
2978 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
2979 | safe_close_pair(m->user_lookup_fds); | |
2980 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
2981 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
2982 | } | |
2983 | ||
fb4650aa ZJS |
2984 | } else if ((val = startswith(l, "dynamic-user="))) |
2985 | dynamic_user_deserialize_one(m, val, fds); | |
2986 | else if ((val = startswith(l, "destroy-ipc-uid="))) | |
2987 | manager_deserialize_uid_refs_one(m, val); | |
2988 | else if ((val = startswith(l, "destroy-ipc-gid="))) | |
2989 | manager_deserialize_gid_refs_one(m, val); | |
e8a565cb YW |
2990 | else if ((val = startswith(l, "exec-runtime="))) |
2991 | exec_runtime_deserialize_one(m, val, fds); | |
fb4650aa | 2992 | else if ((val = startswith(l, "subscribed="))) { |
05a98afd | 2993 | |
fb4650aa | 2994 | if (strv_extend(&m->deserialized_subscribed, val) < 0) |
05a98afd | 2995 | log_oom(); |
9f9f0342 LP |
2996 | } else { |
2997 | ManagerTimestamp q; | |
2998 | ||
2999 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
3000 | val = startswith(l, manager_timestamp_to_string(q)); | |
3001 | if (!val) | |
3002 | continue; | |
05a98afd | 3003 | |
9f9f0342 LP |
3004 | val = startswith(val, "-timestamp="); |
3005 | if (val) | |
3006 | break; | |
3007 | } | |
05a98afd | 3008 | |
9f9f0342 LP |
3009 | if (q < _MANAGER_TIMESTAMP_MAX) /* found it */ |
3010 | dual_timestamp_deserialize(val, m->timestamps + q); | |
3011 | else if (!startswith(l, "kdbus-fd=")) /* ignore kdbus */ | |
3012 | log_notice("Unknown serialization item '%s'", l); | |
3013 | } | |
10f8e83c LP |
3014 | } |
3015 | ||
a16e1123 LP |
3016 | for (;;) { |
3017 | Unit *u; | |
3018 | char name[UNIT_NAME_MAX+2]; | |
07429866 | 3019 | const char* unit_name; |
a16e1123 LP |
3020 | |
3021 | /* Start marker */ | |
3022 | if (!fgets(name, sizeof(name), f)) { | |
3023 | if (feof(f)) | |
10f8e83c LP |
3024 | r = 0; |
3025 | else | |
3026 | r = -errno; | |
a16e1123 | 3027 | |
82c64bf5 | 3028 | goto finish; |
a16e1123 LP |
3029 | } |
3030 | ||
3031 | char_array_0(name); | |
07429866 | 3032 | unit_name = strstrip(name); |
a16e1123 | 3033 | |
07429866 ZJS |
3034 | r = manager_load_unit(m, unit_name, NULL, NULL, &u); |
3035 | if (r < 0) { | |
3036 | log_notice_errno(r, "Failed to load unit \"%s\", skipping deserialization: %m", unit_name); | |
3037 | if (r == -ENOMEM) | |
3038 | goto finish; | |
3039 | unit_deserialize_skip(f); | |
3040 | continue; | |
3041 | } | |
a16e1123 | 3042 | |
01e10de3 | 3043 | r = unit_deserialize(u, f, fds); |
07429866 ZJS |
3044 | if (r < 0) { |
3045 | log_notice_errno(r, "Failed to deserialize unit \"%s\": %m", unit_name); | |
3046 | if (r == -ENOMEM) | |
3047 | goto finish; | |
3048 | } | |
a16e1123 LP |
3049 | } |
3050 | ||
10f8e83c | 3051 | finish: |
145b1f79 | 3052 | if (ferror(f)) |
82c64bf5 | 3053 | r = -EIO; |
a16e1123 | 3054 | |
a7556052 | 3055 | assert(m->n_reloading > 0); |
313cefa1 | 3056 | m->n_reloading--; |
82c64bf5 LP |
3057 | |
3058 | return r; | |
a16e1123 LP |
3059 | } |
3060 | ||
3061 | int manager_reload(Manager *m) { | |
3062 | int r, q; | |
51d122af ZJS |
3063 | _cleanup_fclose_ FILE *f = NULL; |
3064 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
a16e1123 LP |
3065 | |
3066 | assert(m); | |
3067 | ||
07719a21 LP |
3068 | r = manager_open_serialization(m, &f); |
3069 | if (r < 0) | |
a16e1123 LP |
3070 | return r; |
3071 | ||
313cefa1 | 3072 | m->n_reloading++; |
718db961 | 3073 | bus_manager_send_reloading(m, true); |
38c52d46 | 3074 | |
07719a21 LP |
3075 | fds = fdset_new(); |
3076 | if (!fds) { | |
313cefa1 | 3077 | m->n_reloading--; |
51d122af | 3078 | return -ENOMEM; |
a16e1123 LP |
3079 | } |
3080 | ||
b3680f49 | 3081 | r = manager_serialize(m, f, fds, false); |
07719a21 | 3082 | if (r < 0) { |
313cefa1 | 3083 | m->n_reloading--; |
51d122af | 3084 | return r; |
38c52d46 | 3085 | } |
a16e1123 LP |
3086 | |
3087 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
313cefa1 | 3088 | m->n_reloading--; |
51d122af | 3089 | return -errno; |
a16e1123 LP |
3090 | } |
3091 | ||
3092 | /* From here on there is no way back. */ | |
3093 | manager_clear_jobs_and_units(m); | |
07a78643 | 3094 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 3095 | lookup_paths_free(&m->lookup_paths); |
e8a565cb | 3096 | exec_runtime_vacuum(m); |
29206d46 | 3097 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
3098 | m->uid_refs = hashmap_free(m->uid_refs); |
3099 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 3100 | |
4943d143 | 3101 | q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
3102 | if (q < 0 && r >= 0) |
3103 | r = q; | |
5a1e9937 | 3104 | |
64691d20 ZJS |
3105 | q = manager_run_environment_generators(m); |
3106 | if (q < 0 && r >= 0) | |
3107 | r = q; | |
3108 | ||
a3c4eb07 LP |
3109 | /* Find new unit paths */ |
3110 | q = manager_run_generators(m); | |
e801700e | 3111 | if (q < 0 && r >= 0) |
07719a21 LP |
3112 | r = q; |
3113 | ||
a1453343 | 3114 | lookup_paths_reduce(&m->lookup_paths); |
5a1e9937 LP |
3115 | manager_build_unit_path_cache(m); |
3116 | ||
a16e1123 | 3117 | /* First, enumerate what we can from all config files */ |
ba64af90 | 3118 | manager_enumerate(m); |
a16e1123 LP |
3119 | |
3120 | /* Second, deserialize our stored data */ | |
07719a21 | 3121 | q = manager_deserialize(m, f, fds); |
07429866 ZJS |
3122 | if (q < 0) { |
3123 | log_error_errno(q, "Deserialization failed: %m"); | |
3124 | ||
3125 | if (r >= 0) | |
3126 | r = q; | |
3127 | } | |
a16e1123 LP |
3128 | |
3129 | fclose(f); | |
3130 | f = NULL; | |
3131 | ||
a2cc4a6c ZJS |
3132 | /* Re-register notify_fd as event source */ |
3133 | q = manager_setup_notify(m); | |
e801700e | 3134 | if (q < 0 && r >= 0) |
a2cc4a6c ZJS |
3135 | r = q; |
3136 | ||
d8fdc620 LP |
3137 | q = manager_setup_cgroups_agent(m); |
3138 | if (q < 0 && r >= 0) | |
3139 | r = q; | |
3140 | ||
00d9ef85 LP |
3141 | q = manager_setup_user_lookup_fd(m); |
3142 | if (q < 0 && r >= 0) | |
3143 | r = q; | |
3144 | ||
a16e1123 | 3145 | /* Third, fire things up! */ |
007c6337 | 3146 | manager_coldplug(m); |
a16e1123 | 3147 | |
29206d46 LP |
3148 | /* Release any dynamic users no longer referenced */ |
3149 | dynamic_user_vacuum(m, true); | |
3150 | ||
00d9ef85 LP |
3151 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
3152 | manager_vacuum_uid_refs(m); | |
3153 | manager_vacuum_gid_refs(m); | |
3154 | ||
e8a565cb YW |
3155 | exec_runtime_vacuum(m); |
3156 | ||
d075092f LP |
3157 | /* It might be safe to log to the journal now. */ |
3158 | manager_recheck_journal(m); | |
3159 | ||
8936a5e3 DM |
3160 | /* Sync current state of bus names with our set of listening units */ |
3161 | if (m->api_bus) | |
3162 | manager_sync_bus_names(m, m->api_bus); | |
3163 | ||
a7556052 LP |
3164 | assert(m->n_reloading > 0); |
3165 | m->n_reloading--; | |
9f611ad8 | 3166 | |
71445ae7 LP |
3167 | m->send_reloading_done = true; |
3168 | ||
a16e1123 LP |
3169 | return r; |
3170 | } | |
3171 | ||
fdf20a31 | 3172 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
3173 | Unit *u; |
3174 | Iterator i; | |
3175 | ||
3176 | assert(m); | |
3177 | ||
3178 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 3179 | unit_reset_failed(u); |
5632e374 LP |
3180 | } |
3181 | ||
31afa0a4 | 3182 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3183 | Unit *u; |
3184 | ||
3185 | assert(m); | |
3186 | assert(name); | |
3187 | ||
3188 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3189 | u = manager_get_unit(m, name); |
3190 | if (!u) | |
8f6df3fa LP |
3191 | return true; |
3192 | ||
31afa0a4 | 3193 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3194 | } |
3195 | ||
d8eb10d6 ZJS |
3196 | static void log_taint_string(Manager *m) { |
3197 | _cleanup_free_ char *taint = NULL; | |
3198 | ||
3199 | assert(m); | |
3200 | ||
3201 | if (MANAGER_IS_USER(m) || m->taint_logged) | |
3202 | return; | |
3203 | ||
3204 | m->taint_logged = true; /* only check for taint once */ | |
3205 | ||
3206 | taint = manager_taint_string(m); | |
3207 | if (isempty(taint)) | |
3208 | return; | |
3209 | ||
3210 | log_struct(LOG_NOTICE, | |
3211 | LOG_MESSAGE("System is tainted: %s", taint), | |
3212 | "TAINT=%s", taint, | |
3213 | "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR, | |
3214 | NULL); | |
3215 | } | |
3216 | ||
56dacdbc | 3217 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 3218 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 3219 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3220 | |
e0a3da1f | 3221 | if (m->test_run_flags) |
b0c918b9 LP |
3222 | return; |
3223 | ||
463d0d15 | 3224 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
dd1db3c2 | 3225 | char ts[FORMAT_TIMESPAN_MAX]; |
dc3c9f5e ZJS |
3226 | char buf[FORMAT_TIMESPAN_MAX + STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX + STRLEN(" (loader) + ")] |
3227 | = {}; | |
3228 | char *p = buf; | |
3229 | size_t size = sizeof buf; | |
e03ae661 | 3230 | |
9f9f0342 LP |
3231 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3232 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3233 | * negative values. */ |
3234 | ||
9f9f0342 LP |
3235 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3236 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3237 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3238 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3239 | |
dd1db3c2 YW |
3240 | if (firmware_usec > 0) |
3241 | size = strpcpyf(&p, size, "%s (firmware) + ", format_timespan(ts, sizeof(ts), firmware_usec, USEC_PER_MSEC)); | |
3242 | if (loader_usec > 0) | |
3243 | size = strpcpyf(&p, size, "%s (loader) + ", format_timespan(ts, sizeof(ts), loader_usec, USEC_PER_MSEC)); | |
3244 | ||
9f9f0342 | 3245 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3246 | |
9f9f0342 LP |
3247 | /* The initrd case on bare-metal*/ |
3248 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3249 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3250 | |
e12919e8 | 3251 | log_struct(LOG_INFO, |
2b044526 | 3252 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3253 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3254 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3255 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
dd1db3c2 YW |
3256 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3257 | buf, | |
e2cc6eca LP |
3258 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), |
3259 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
3260 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
3261 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 3262 | NULL); |
18fa6b27 | 3263 | } else { |
9f9f0342 LP |
3264 | /* The initrd-less case on bare-metal*/ |
3265 | ||
3266 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3267 | initrd_usec = 0; |
3268 | ||
81270860 | 3269 | log_struct(LOG_INFO, |
2b044526 | 3270 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3271 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3272 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
dd1db3c2 YW |
3273 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.", |
3274 | buf, | |
e2cc6eca LP |
3275 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), |
3276 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
3277 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
81270860 | 3278 | NULL); |
e12919e8 LP |
3279 | } |
3280 | } else { | |
4adf314b | 3281 | /* The container and --user case */ |
e12919e8 | 3282 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3283 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3284 | |
3285 | log_struct(LOG_INFO, | |
2b044526 | 3286 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3287 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
3288 | LOG_MESSAGE("Startup finished in %s.", |
3289 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 3290 | NULL); |
18fa6b27 | 3291 | } |
b0c918b9 | 3292 | |
718db961 | 3293 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
3294 | |
3295 | sd_notifyf(false, | |
0c2826c6 ZJS |
3296 | m->ready_sent ? "STATUS=Startup finished in %s." |
3297 | : "READY=1\n" | |
3298 | "STATUS=Startup finished in %s.", | |
2fa4092c | 3299 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
0c2826c6 | 3300 | m->ready_sent = true; |
d8eb10d6 ZJS |
3301 | |
3302 | log_taint_string(m); | |
b0c918b9 LP |
3303 | } |
3304 | ||
4adf314b LP |
3305 | static void manager_send_ready(Manager *m) { |
3306 | assert(m); | |
3307 | ||
3308 | /* We send READY=1 on reaching basic.target only when running in --user mode. */ | |
3309 | if (!MANAGER_IS_USER(m) || m->ready_sent) | |
3310 | return; | |
3311 | ||
3312 | m->ready_sent = true; | |
3313 | ||
3314 | sd_notifyf(false, | |
3315 | "READY=1\n" | |
3316 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
3317 | } | |
3318 | ||
3319 | static void manager_check_basic_target(Manager *m) { | |
3320 | Unit *u; | |
3321 | ||
3322 | assert(m); | |
3323 | ||
3324 | /* Small shortcut */ | |
3325 | if (m->ready_sent && m->taint_logged) | |
3326 | return; | |
3327 | ||
3328 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3329 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3330 | return; | |
3331 | ||
3332 | /* For user managers, send out READY=1 as soon as we reach basic.target */ | |
3333 | manager_send_ready(m); | |
3334 | ||
3335 | /* Log the taint string as soon as we reach basic.target */ | |
3336 | log_taint_string(m); | |
3337 | } | |
3338 | ||
56dacdbc | 3339 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3340 | assert(m); |
3341 | ||
2c289ea8 | 3342 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3343 | return; |
3344 | ||
4259d202 LP |
3345 | /* Verify that we have entered the event loop already, and not left it again. */ |
3346 | if (!MANAGER_IS_RUNNING(m)) | |
9771b62d LP |
3347 | return; |
3348 | ||
4adf314b | 3349 | manager_check_basic_target(m); |
0c2826c6 | 3350 | |
56dacdbc | 3351 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3352 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3353 | /* Ignore any failure, this is only for feedback */ |
e7ab4d1a | 3354 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); |
56dacdbc ZJS |
3355 | |
3356 | return; | |
3357 | } | |
3358 | ||
3359 | manager_flip_auto_status(m, false); | |
3360 | ||
3361 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
3362 | manager_close_idle_pipe(m); |
3363 | ||
3364 | /* Turn off confirm spawn now */ | |
7d5ceb64 | 3365 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
3366 | |
3367 | /* No need to update ask password status when we're going non-interactive */ | |
3368 | manager_close_ask_password(m); | |
3369 | ||
3370 | /* This is no longer the first boot */ | |
3371 | manager_set_first_boot(m, false); | |
3372 | ||
49d5666c | 3373 | if (MANAGER_IS_FINISHED(m)) |
56dacdbc ZJS |
3374 | return; |
3375 | ||
9f9f0342 | 3376 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
3377 | |
3378 | manager_notify_finished(m); | |
3379 | ||
e7ab4d1a | 3380 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3381 | } |
3382 | ||
64691d20 ZJS |
3383 | static bool generator_path_any(const char* const* paths) { |
3384 | char **path; | |
3385 | bool found = false; | |
3386 | ||
3387 | /* Optimize by skipping the whole process by not creating output directories | |
3388 | * if no generators are found. */ | |
3389 | STRV_FOREACH(path, (char**) paths) | |
3390 | if (access(*path, F_OK) == 0) | |
3391 | found = true; | |
3392 | else if (errno != ENOENT) | |
3393 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
3394 | ||
3395 | return found; | |
3396 | } | |
3397 | ||
3398 | static const char* system_env_generator_binary_paths[] = { | |
3399 | "/run/systemd/system-environment-generators", | |
3400 | "/etc/systemd/system-environment-generators", | |
3401 | "/usr/local/lib/systemd/system-environment-generators", | |
3402 | SYSTEM_ENV_GENERATOR_PATH, | |
3403 | NULL | |
3404 | }; | |
3405 | ||
3406 | static const char* user_env_generator_binary_paths[] = { | |
3407 | "/run/systemd/user-environment-generators", | |
3408 | "/etc/systemd/user-environment-generators", | |
3409 | "/usr/local/lib/systemd/user-environment-generators", | |
3410 | USER_ENV_GENERATOR_PATH, | |
3411 | NULL | |
3412 | }; | |
3413 | ||
3414 | static int manager_run_environment_generators(Manager *m) { | |
3415 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
3416 | const char **paths; | |
3417 | void* args[] = {&tmp, &tmp, &m->environment}; | |
3418 | ||
e0a3da1f ZJS |
3419 | if (m->test_run_flags && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
3420 | return 0; | |
3421 | ||
64691d20 ZJS |
3422 | paths = MANAGER_IS_SYSTEM(m) ? system_env_generator_binary_paths : user_env_generator_binary_paths; |
3423 | ||
3424 | if (!generator_path_any(paths)) | |
3425 | return 0; | |
3426 | ||
3427 | return execute_directories(paths, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL); | |
3428 | } | |
3429 | ||
e801700e | 3430 | static int manager_run_generators(Manager *m) { |
f42348ac | 3431 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 3432 | const char *argv[5]; |
07719a21 | 3433 | int r; |
5a1e9937 LP |
3434 | |
3435 | assert(m); | |
3436 | ||
e0a3da1f ZJS |
3437 | if (m->test_run_flags && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
3438 | return 0; | |
3439 | ||
9183df70 | 3440 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3441 | if (!paths) |
3442 | return log_oom(); | |
5a1e9937 | 3443 | |
64691d20 ZJS |
3444 | if (!generator_path_any((const char* const*) paths)) |
3445 | return 0; | |
5a1e9937 | 3446 | |
cd64fd56 | 3447 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
07719a21 LP |
3448 | if (r < 0) |
3449 | goto finish; | |
5a1e9937 | 3450 | |
83cc030f | 3451 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3452 | argv[1] = m->lookup_paths.generator; |
3453 | argv[2] = m->lookup_paths.generator_early; | |
3454 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3455 | argv[4] = NULL; |
5a1e9937 | 3456 | |
718db961 | 3457 | RUN_WITH_UMASK(0022) |
c6e47247 ZJS |
3458 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, |
3459 | NULL, NULL, (char**) argv); | |
5a1e9937 | 3460 | |
718db961 | 3461 | finish: |
cd64fd56 | 3462 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3463 | return r; |
5a1e9937 LP |
3464 | } |
3465 | ||
718db961 LP |
3466 | int manager_environment_add(Manager *m, char **minus, char **plus) { |
3467 | char **a = NULL, **b = NULL, **l; | |
97d0e5f8 | 3468 | assert(m); |
bcd8e6d1 | 3469 | |
718db961 | 3470 | l = m->environment; |
bcd8e6d1 | 3471 | |
718db961 LP |
3472 | if (!strv_isempty(minus)) { |
3473 | a = strv_env_delete(l, 1, minus); | |
3474 | if (!a) | |
3475 | return -ENOMEM; | |
3476 | ||
3477 | l = a; | |
3478 | } | |
3479 | ||
3480 | if (!strv_isempty(plus)) { | |
3481 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
3482 | if (!b) { |
3483 | strv_free(a); | |
718db961 | 3484 | return -ENOMEM; |
aa9f8a30 | 3485 | } |
bcd8e6d1 | 3486 | |
718db961 LP |
3487 | l = b; |
3488 | } | |
3489 | ||
3490 | if (m->environment != l) | |
3491 | strv_free(m->environment); | |
3492 | if (a != l) | |
3493 | strv_free(a); | |
3494 | if (b != l) | |
3495 | strv_free(b); | |
3496 | ||
f069efb4 | 3497 | m->environment = l; |
47cf8ff2 | 3498 | manager_sanitize_environment(m); |
f069efb4 | 3499 | |
97d0e5f8 UTL |
3500 | return 0; |
3501 | } | |
3502 | ||
c93ff2e9 FC |
3503 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
3504 | int i; | |
3505 | ||
3506 | assert(m); | |
3507 | ||
517d56b1 | 3508 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3509 | m->rlimit[i] = mfree(m->rlimit[i]); |
3510 | ||
07719a21 LP |
3511 | if (!default_rlimit[i]) |
3512 | continue; | |
c93ff2e9 | 3513 | |
07719a21 LP |
3514 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3515 | if (!m->rlimit[i]) | |
3ce40911 | 3516 | return log_oom(); |
c93ff2e9 FC |
3517 | } |
3518 | ||
3519 | return 0; | |
3520 | } | |
3521 | ||
d075092f | 3522 | static bool manager_journal_is_running(Manager *m) { |
f1dd0c3f LP |
3523 | Unit *u; |
3524 | ||
3525 | assert(m); | |
3526 | ||
d075092f | 3527 | /* If we are the user manager we can safely assume that the journal is up */ |
463d0d15 | 3528 | if (!MANAGER_IS_SYSTEM(m)) |
d075092f | 3529 | return true; |
f1dd0c3f | 3530 | |
d075092f | 3531 | /* Check that the socket is not only up, but in RUNNING state */ |
731a676c | 3532 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
d075092f LP |
3533 | if (!u) |
3534 | return false; | |
3535 | if (SOCKET(u)->state != SOCKET_RUNNING) | |
3536 | return false; | |
f1dd0c3f | 3537 | |
d075092f | 3538 | /* Similar, check if the daemon itself is fully up, too */ |
731a676c | 3539 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
d075092f LP |
3540 | if (!u) |
3541 | return false; | |
3542 | if (SERVICE(u)->state != SERVICE_RUNNING) | |
3543 | return false; | |
3544 | ||
3545 | return true; | |
3546 | } | |
3547 | ||
3548 | void manager_recheck_journal(Manager *m) { | |
3549 | ||
3550 | assert(m); | |
3551 | ||
3552 | /* Don't bother with this unless we are in the special situation of being PID 1 */ | |
3553 | if (getpid_cached() != 1) | |
731a676c | 3554 | return; |
f1dd0c3f | 3555 | |
d075092f LP |
3556 | if (manager_journal_is_running(m)) { |
3557 | ||
3558 | /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. */ | |
3559 | log_set_prohibit_ipc(false); | |
d075092f LP |
3560 | } else { |
3561 | ||
3562 | /* If the journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we | |
3563 | * might trigger an activation ourselves we can't fulfill */ | |
3564 | log_set_prohibit_ipc(true); | |
d075092f | 3565 | } |
cc2b9e6b | 3566 | log_open(); |
f1dd0c3f LP |
3567 | } |
3568 | ||
d450b6f2 | 3569 | void manager_set_show_status(Manager *m, ShowStatus mode) { |
27d340c7 | 3570 | assert(m); |
d450b6f2 | 3571 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); |
27d340c7 | 3572 | |
463d0d15 | 3573 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3574 | return; |
3575 | ||
76b6f3f6 ZJS |
3576 | if (m->show_status != mode) |
3577 | log_debug("%s showing of status.", | |
3578 | mode == SHOW_STATUS_NO ? "Disabling" : "Enabling"); | |
d450b6f2 | 3579 | m->show_status = mode; |
27d340c7 | 3580 | |
d450b6f2 | 3581 | if (mode > 0) |
ac5b0c13 | 3582 | (void) touch("/run/systemd/show-status"); |
27d340c7 | 3583 | else |
ac5b0c13 | 3584 | (void) unlink("/run/systemd/show-status"); |
27d340c7 LP |
3585 | } |
3586 | ||
127d5fd1 | 3587 | static bool manager_get_show_status(Manager *m, StatusType type) { |
27d340c7 LP |
3588 | assert(m); |
3589 | ||
463d0d15 | 3590 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3591 | return false; |
3592 | ||
31a7eb86 ZJS |
3593 | if (m->no_console_output) |
3594 | return false; | |
3595 | ||
d81afec1 | 3596 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) |
08510627 LP |
3597 | return false; |
3598 | ||
e46b13c8 | 3599 | /* If we cannot find out the status properly, just proceed. */ |
ebc5788e | 3600 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) |
e46b13c8 ZJS |
3601 | return false; |
3602 | ||
46fb617b | 3603 | return m->show_status > 0; |
27d340c7 | 3604 | } |
68b29a9f | 3605 | |
7d5ceb64 FB |
3606 | const char *manager_get_confirm_spawn(Manager *m) { |
3607 | static int last_errno = 0; | |
3608 | const char *vc = m->confirm_spawn; | |
3609 | struct stat st; | |
3610 | int r; | |
3611 | ||
3612 | /* Here's the deal: we want to test the validity of the console but don't want | |
3613 | * PID1 to go through the whole console process which might block. But we also | |
3614 | * want to warn the user only once if something is wrong with the console so we | |
3615 | * cannot do the sanity checks after spawning our children. So here we simply do | |
3616 | * really basic tests to hopefully trap common errors. | |
3617 | * | |
3618 | * If the console suddenly disappear at the time our children will really it | |
3619 | * then they will simply fail to acquire it and a positive answer will be | |
3620 | * assumed. New children will fallback to /dev/console though. | |
3621 | * | |
3622 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
3623 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
3624 | * reason the configured console is not ready, we fallback to the default | |
3625 | * console. */ | |
3626 | ||
3627 | if (!vc || path_equal(vc, "/dev/console")) | |
3628 | return vc; | |
3629 | ||
3630 | r = stat(vc, &st); | |
3631 | if (r < 0) | |
3632 | goto fail; | |
3633 | ||
3634 | if (!S_ISCHR(st.st_mode)) { | |
3635 | errno = ENOTTY; | |
3636 | goto fail; | |
3637 | } | |
3638 | ||
3639 | last_errno = 0; | |
3640 | return vc; | |
3641 | fail: | |
3642 | if (last_errno != errno) { | |
3643 | last_errno = errno; | |
3644 | log_warning_errno(errno, "Failed to open %s: %m, using default console", vc); | |
3645 | } | |
3646 | return "/dev/console"; | |
3647 | } | |
3648 | ||
e2680723 LP |
3649 | void manager_set_first_boot(Manager *m, bool b) { |
3650 | assert(m); | |
3651 | ||
463d0d15 | 3652 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3653 | return; |
3654 | ||
ae2a2c53 LP |
3655 | if (m->first_boot != (int) b) { |
3656 | if (b) | |
3657 | (void) touch("/run/systemd/first-boot"); | |
3658 | else | |
3659 | (void) unlink("/run/systemd/first-boot"); | |
3660 | } | |
e2680723 | 3661 | |
ae2a2c53 | 3662 | m->first_boot = b; |
e2680723 LP |
3663 | } |
3664 | ||
b0eb2944 FB |
3665 | void manager_disable_confirm_spawn(void) { |
3666 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
3667 | } | |
3668 | ||
3669 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
3670 | if (!m->confirm_spawn) | |
3671 | return true; | |
3672 | ||
3673 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
3674 | } | |
3675 | ||
127d5fd1 | 3676 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
3677 | va_list ap; |
3678 | ||
cb6531be ZJS |
3679 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
3680 | ||
3681 | if (m && !manager_get_show_status(m, type)) | |
25cee550 MS |
3682 | return; |
3683 | ||
03b717a3 MS |
3684 | /* XXX We should totally drop the check for ephemeral here |
3685 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 3686 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
3687 | return; |
3688 | ||
25cee550 | 3689 | va_start(ap, format); |
127d5fd1 | 3690 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); |
25cee550 MS |
3691 | va_end(ap); |
3692 | } | |
3693 | ||
a57f7e2c LP |
3694 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
3695 | char p[strlen(path)+1]; | |
3696 | ||
3697 | assert(m); | |
3698 | assert(path); | |
3699 | ||
3700 | strcpy(p, path); | |
3701 | path_kill_slashes(p); | |
3702 | ||
3703 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3704 | } | |
e66cf1a3 | 3705 | |
19bbdd98 | 3706 | void manager_set_exec_params(Manager *m, ExecParameters *p) { |
f755e3b7 | 3707 | assert(m); |
3536f49e YW |
3708 | assert(p); |
3709 | ||
3710 | p->environment = m->environment; | |
3711 | p->confirm_spawn = manager_get_confirm_spawn(m); | |
3712 | p->cgroup_supported = m->cgroup_supported; | |
3713 | p->prefix = m->prefix; | |
e66cf1a3 | 3714 | |
8679efde | 3715 | SET_FLAG(p->flags, EXEC_PASS_LOG_UNIT|EXEC_CHOWN_DIRECTORIES, MANAGER_IS_SYSTEM(m)); |
e66cf1a3 | 3716 | } |
f755e3b7 | 3717 | |
5269eb6b | 3718 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 3719 | unsigned size; |
5269eb6b | 3720 | int r; |
03455c28 LDM |
3721 | |
3722 | assert(m); | |
3723 | assert(u->manager == m); | |
3724 | ||
3725 | size = set_size(m->failed_units); | |
3726 | ||
9fff8981 | 3727 | if (failed) { |
5269eb6b LP |
3728 | r = set_ensure_allocated(&m->failed_units, NULL); |
3729 | if (r < 0) | |
3730 | return log_oom(); | |
3731 | ||
9fff8981 | 3732 | if (set_put(m->failed_units, u) < 0) |
5269eb6b | 3733 | return log_oom(); |
9fff8981 | 3734 | } else |
5269eb6b | 3735 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
3736 | |
3737 | if (set_size(m->failed_units) != size) | |
3738 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
3739 | |
3740 | return 0; | |
03455c28 LDM |
3741 | } |
3742 | ||
f755e3b7 LP |
3743 | ManagerState manager_state(Manager *m) { |
3744 | Unit *u; | |
3745 | ||
3746 | assert(m); | |
3747 | ||
3748 | /* Did we ever finish booting? If not then we are still starting up */ | |
49d5666c | 3749 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
3750 | |
3751 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3752 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3753 | return MANAGER_INITIALIZING; | |
3754 | ||
f755e3b7 | 3755 | return MANAGER_STARTING; |
d81afec1 | 3756 | } |
f755e3b7 | 3757 | |
e68537f0 | 3758 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
f755e3b7 | 3759 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
706424c2 | 3760 | if (u && unit_active_or_pending(u)) |
f755e3b7 LP |
3761 | return MANAGER_STOPPING; |
3762 | ||
45a7b16b LP |
3763 | if (MANAGER_IS_SYSTEM(m)) { |
3764 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3765 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3766 | if (u && unit_active_or_pending(u)) | |
3767 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 3768 | |
45a7b16b LP |
3769 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
3770 | if (u && unit_active_or_pending(u)) | |
3771 | return MANAGER_MAINTENANCE; | |
3772 | } | |
f755e3b7 LP |
3773 | |
3774 | /* Are there any failed units? If so, we are in degraded mode */ | |
3775 | if (set_size(m->failed_units) > 0) | |
3776 | return MANAGER_DEGRADED; | |
3777 | ||
3778 | return MANAGER_RUNNING; | |
3779 | } | |
3780 | ||
00d9ef85 LP |
3781 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3782 | ||
3783 | static void manager_unref_uid_internal( | |
3784 | Manager *m, | |
3785 | Hashmap **uid_refs, | |
3786 | uid_t uid, | |
3787 | bool destroy_now, | |
3788 | int (*_clean_ipc)(uid_t uid)) { | |
3789 | ||
3790 | uint32_t c, n; | |
3791 | ||
3792 | assert(m); | |
3793 | assert(uid_refs); | |
3794 | assert(uid_is_valid(uid)); | |
3795 | assert(_clean_ipc); | |
3796 | ||
3797 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
3798 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
3799 | * | |
3800 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
3801 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
3802 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
3803 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
3804 | ||
3805 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3806 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3807 | ||
3808 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3809 | return; | |
3810 | ||
3811 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3812 | ||
3813 | n = c & ~DESTROY_IPC_FLAG; | |
3814 | assert(n > 0); | |
3815 | n--; | |
3816 | ||
3817 | if (destroy_now && n == 0) { | |
3818 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
3819 | ||
3820 | if (c & DESTROY_IPC_FLAG) { | |
3821 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
3822 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3823 | uid); | |
3824 | (void) _clean_ipc(uid); | |
3825 | } | |
3826 | } else { | |
3827 | c = n | (c & DESTROY_IPC_FLAG); | |
3828 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
3829 | } | |
3830 | } | |
3831 | ||
3832 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
3833 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
3834 | } | |
3835 | ||
3836 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
3837 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
3838 | } | |
3839 | ||
3840 | static int manager_ref_uid_internal( | |
3841 | Manager *m, | |
3842 | Hashmap **uid_refs, | |
3843 | uid_t uid, | |
3844 | bool clean_ipc) { | |
3845 | ||
3846 | uint32_t c, n; | |
3847 | int r; | |
3848 | ||
3849 | assert(m); | |
3850 | assert(uid_refs); | |
3851 | assert(uid_is_valid(uid)); | |
3852 | ||
3853 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
3854 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
3855 | ||
3856 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3857 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3858 | ||
3859 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3860 | return 0; | |
3861 | ||
3862 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3863 | if (r < 0) | |
3864 | return r; | |
3865 | ||
3866 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3867 | ||
3868 | n = c & ~DESTROY_IPC_FLAG; | |
3869 | n++; | |
3870 | ||
3871 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
3872 | return -EOVERFLOW; | |
3873 | ||
3874 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
3875 | ||
3876 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3877 | } | |
3878 | ||
3879 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
3880 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
3881 | } | |
3882 | ||
3883 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
3884 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
3885 | } | |
3886 | ||
3887 | static void manager_vacuum_uid_refs_internal( | |
3888 | Manager *m, | |
3889 | Hashmap **uid_refs, | |
3890 | int (*_clean_ipc)(uid_t uid)) { | |
3891 | ||
3892 | Iterator i; | |
3893 | void *p, *k; | |
3894 | ||
3895 | assert(m); | |
3896 | assert(uid_refs); | |
3897 | assert(_clean_ipc); | |
3898 | ||
3899 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3900 | uint32_t c, n; | |
3901 | uid_t uid; | |
3902 | ||
3903 | uid = PTR_TO_UID(k); | |
3904 | c = PTR_TO_UINT32(p); | |
3905 | ||
3906 | n = c & ~DESTROY_IPC_FLAG; | |
3907 | if (n > 0) | |
3908 | continue; | |
3909 | ||
3910 | if (c & DESTROY_IPC_FLAG) { | |
3911 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
3912 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3913 | uid); | |
3914 | (void) _clean_ipc(uid); | |
3915 | } | |
3916 | ||
3917 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
3918 | } | |
3919 | } | |
3920 | ||
3921 | void manager_vacuum_uid_refs(Manager *m) { | |
3922 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); | |
3923 | } | |
3924 | ||
3925 | void manager_vacuum_gid_refs(Manager *m) { | |
3926 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); | |
3927 | } | |
3928 | ||
3929 | static void manager_serialize_uid_refs_internal( | |
3930 | Manager *m, | |
3931 | FILE *f, | |
3932 | Hashmap **uid_refs, | |
3933 | const char *field_name) { | |
3934 | ||
3935 | Iterator i; | |
3936 | void *p, *k; | |
3937 | ||
3938 | assert(m); | |
3939 | assert(f); | |
3940 | assert(uid_refs); | |
3941 | assert(field_name); | |
3942 | ||
3943 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter | |
3944 | * of it is better rebuild after a reload/reexec. */ | |
3945 | ||
3946 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3947 | uint32_t c; | |
3948 | uid_t uid; | |
3949 | ||
3950 | uid = PTR_TO_UID(k); | |
3951 | c = PTR_TO_UINT32(p); | |
3952 | ||
3953 | if (!(c & DESTROY_IPC_FLAG)) | |
3954 | continue; | |
3955 | ||
3956 | fprintf(f, "%s=" UID_FMT "\n", field_name, uid); | |
3957 | } | |
3958 | } | |
3959 | ||
3960 | void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3961 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3962 | } | |
3963 | ||
3964 | void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3965 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3966 | } | |
3967 | ||
3968 | static void manager_deserialize_uid_refs_one_internal( | |
3969 | Manager *m, | |
3970 | Hashmap** uid_refs, | |
3971 | const char *value) { | |
3972 | ||
3973 | uid_t uid; | |
3974 | uint32_t c; | |
3975 | int r; | |
3976 | ||
3977 | assert(m); | |
3978 | assert(uid_refs); | |
3979 | assert(value); | |
3980 | ||
3981 | r = parse_uid(value, &uid); | |
3982 | if (r < 0 || uid == 0) { | |
3983 | log_debug("Unable to parse UID reference serialization"); | |
3984 | return; | |
3985 | } | |
3986 | ||
3987 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3988 | if (r < 0) { | |
3989 | log_oom(); | |
3990 | return; | |
3991 | } | |
3992 | ||
3993 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3994 | if (c & DESTROY_IPC_FLAG) | |
3995 | return; | |
3996 | ||
3997 | c |= DESTROY_IPC_FLAG; | |
3998 | ||
3999 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
4000 | if (r < 0) { | |
4001 | log_debug("Failed to add UID reference entry"); | |
4002 | return; | |
4003 | } | |
4004 | } | |
4005 | ||
4006 | void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
4007 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
4008 | } | |
4009 | ||
4010 | void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
4011 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
4012 | } | |
4013 | ||
4014 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
4015 | struct buffer { | |
4016 | uid_t uid; | |
4017 | gid_t gid; | |
4018 | char unit_name[UNIT_NAME_MAX+1]; | |
4019 | } _packed_ buffer; | |
4020 | ||
4021 | Manager *m = userdata; | |
4022 | ssize_t l; | |
4023 | size_t n; | |
4024 | Unit *u; | |
4025 | ||
4026 | assert_se(source); | |
4027 | assert_se(m); | |
4028 | ||
4029 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
4030 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
4031 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
4032 | ||
4033 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
4034 | if (l < 0) { | |
4c701096 | 4035 | if (IN_SET(errno, EINTR, EAGAIN)) |
00d9ef85 LP |
4036 | return 0; |
4037 | ||
4038 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
4039 | } | |
4040 | ||
4041 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
4042 | log_warning("Received too short user lookup message, ignoring."); | |
4043 | return 0; | |
4044 | } | |
4045 | ||
4046 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
4047 | log_warning("Received too long user lookup message, ignoring."); | |
4048 | return 0; | |
4049 | } | |
4050 | ||
4051 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
4052 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
4053 | return 0; | |
4054 | } | |
4055 | ||
4056 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
4057 | if (memchr(buffer.unit_name, 0, n)) { | |
4058 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
4059 | return 0; | |
4060 | } | |
4061 | ||
4062 | buffer.unit_name[n] = 0; | |
4063 | u = manager_get_unit(m, buffer.unit_name); | |
4064 | if (!u) { | |
4065 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
4066 | return 0; | |
4067 | } | |
4068 | ||
4069 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
4070 | ||
4071 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
4072 | return 0; | |
4073 | } | |
4074 | ||
af6b0ecc | 4075 | char *manager_taint_string(Manager *m) { |
90d7464d | 4076 | _cleanup_free_ char *destination = NULL, *overflowuid = NULL, *overflowgid = NULL; |
af6b0ecc LP |
4077 | char *buf, *e; |
4078 | int r; | |
4079 | ||
198ce932 ZJS |
4080 | /* Returns a "taint string", e.g. "local-hwclock:var-run-bad". |
4081 | * Only things that are detected at runtime should be tagged | |
4082 | * here. For stuff that is set during compilation, emit a warning | |
4083 | * in the configuration phase. */ | |
4084 | ||
af6b0ecc LP |
4085 | assert(m); |
4086 | ||
4087 | buf = new(char, sizeof("split-usr:" | |
4088 | "cgroups-missing:" | |
4089 | "local-hwclock:" | |
4090 | "var-run-bad:" | |
90d7464d LP |
4091 | "overflowuid-not-65534:" |
4092 | "overflowgid-not-65534:")); | |
af6b0ecc LP |
4093 | if (!buf) |
4094 | return NULL; | |
4095 | ||
4096 | e = buf; | |
0fd402b0 | 4097 | buf[0] = 0; |
af6b0ecc LP |
4098 | |
4099 | if (m->taint_usr) | |
4100 | e = stpcpy(e, "split-usr:"); | |
4101 | ||
4102 | if (access("/proc/cgroups", F_OK) < 0) | |
4103 | e = stpcpy(e, "cgroups-missing:"); | |
4104 | ||
4105 | if (clock_is_localtime(NULL) > 0) | |
4106 | e = stpcpy(e, "local-hwclock:"); | |
4107 | ||
4108 | r = readlink_malloc("/var/run", &destination); | |
4109 | if (r < 0 || !PATH_IN_SET(destination, "../run", "/run")) | |
4110 | e = stpcpy(e, "var-run-bad:"); | |
4111 | ||
90d7464d LP |
4112 | r = read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid); |
4113 | if (r >= 0 && !streq(overflowuid, "65534")) | |
4114 | e = stpcpy(e, "overflowuid-not-65534:"); | |
4115 | ||
4116 | r = read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid); | |
4117 | if (r >= 0 && !streq(overflowgid, "65534")) | |
4118 | e = stpcpy(e, "overflowgid-not-65534:"); | |
4119 | ||
af6b0ecc LP |
4120 | /* remove the last ':' */ |
4121 | if (e != buf) | |
4122 | e[-1] = 0; | |
4123 | ||
4124 | return buf; | |
4125 | } | |
4126 | ||
adefcf28 LP |
4127 | void manager_ref_console(Manager *m) { |
4128 | assert(m); | |
4129 | ||
4130 | m->n_on_console++; | |
4131 | } | |
4132 | ||
4133 | void manager_unref_console(Manager *m) { | |
4134 | ||
4135 | assert(m->n_on_console > 0); | |
4136 | m->n_on_console--; | |
4137 | ||
4138 | if (m->n_on_console == 0) | |
4139 | m->no_console_output = false; /* unset no_console_output flag, since the console is definitely free now */ | |
4140 | } | |
4141 | ||
f755e3b7 | 4142 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 4143 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
4144 | [MANAGER_STARTING] = "starting", |
4145 | [MANAGER_RUNNING] = "running", | |
4146 | [MANAGER_DEGRADED] = "degraded", | |
4147 | [MANAGER_MAINTENANCE] = "maintenance", | |
4148 | [MANAGER_STOPPING] = "stopping", | |
4149 | }; | |
4150 | ||
4151 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
4152 | |
4153 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
4154 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", | |
4155 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
4156 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
4157 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
4158 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
4159 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
4160 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
4161 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
4162 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
4163 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
4164 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
4165 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
4166 | }; | |
4167 | ||
4168 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); |