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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" |
400f1a33 LP |
51 | #include "dbus-job.h" |
52 | #include "dbus-manager.h" | |
53 | #include "dbus-unit.h" | |
54 | #include "dbus.h" | |
d063a527 | 55 | #include "dirent-util.h" |
400f1a33 | 56 | #include "env-util.h" |
4f5dd394 | 57 | #include "escape.h" |
89711996 | 58 | #include "exec-util.h" |
d3070fbd | 59 | #include "execute.h" |
400f1a33 | 60 | #include "exit-status.h" |
3ffd4af2 | 61 | #include "fd-util.h" |
0d39fa9c | 62 | #include "fileio.h" |
f4f15635 | 63 | #include "fs-util.h" |
60918275 | 64 | #include "hashmap.h" |
c004493c | 65 | #include "io-util.h" |
d3070fbd | 66 | #include "label.h" |
400f1a33 | 67 | #include "locale-setup.h" |
16354eff | 68 | #include "log.h" |
400f1a33 | 69 | #include "macro.h" |
3ffd4af2 | 70 | #include "manager.h" |
400f1a33 | 71 | #include "missing.h" |
49e942b2 | 72 | #include "mkdir.h" |
6bedfcbb | 73 | #include "parse-util.h" |
400f1a33 LP |
74 | #include "path-lookup.h" |
75 | #include "path-util.h" | |
76 | #include "process-util.h" | |
ea430986 | 77 | #include "ratelimit.h" |
c6878637 | 78 | #include "rm-rf.h" |
400f1a33 | 79 | #include "signal-util.h" |
514f4ef5 | 80 | #include "special.h" |
8fcde012 | 81 | #include "stat-util.h" |
8b43440b | 82 | #include "string-table.h" |
07630cea | 83 | #include "string-util.h" |
400f1a33 LP |
84 | #include "strv.h" |
85 | #include "terminal-util.h" | |
86 | #include "time-util.h" | |
87 | #include "transaction.h" | |
affb60b1 | 88 | #include "umask-util.h" |
400f1a33 | 89 | #include "unit-name.h" |
00d9ef85 | 90 | #include "user-util.h" |
400f1a33 | 91 | #include "util.h" |
5dc4c17f | 92 | #include "virt.h" |
e96d6be7 | 93 | #include "watchdog.h" |
60918275 | 94 | |
a47806fa | 95 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 96 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 97 | |
03b717a3 | 98 | /* Initial delay and the interval for printing status messages about running jobs */ |
fd08a840 ZJS |
99 | #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) |
100 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) | |
03b717a3 MS |
101 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
102 | ||
718db961 | 103 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 104 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
105 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
106 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
107 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 108 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 109 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 110 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
64691d20 | 111 | static int manager_run_environment_generators(Manager *m); |
e801700e | 112 | static int manager_run_generators(Manager *m); |
718db961 | 113 | |
2ae56591 | 114 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 115 | usec_t next; |
cfa9677b | 116 | int r; |
e5723c89 | 117 | |
718db961 | 118 | assert(m); |
03b717a3 | 119 | |
42bf1ae1 FB |
120 | /* We do not want to show the cylon animation if the user |
121 | * needs to confirm service executions otherwise confirmation | |
122 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 123 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
124 | return; |
125 | ||
718db961 | 126 | if (m->jobs_in_progress_event_source) |
2ae56591 | 127 | return; |
03b717a3 | 128 | |
e5723c89 | 129 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; |
cfa9677b | 130 | r = sd_event_add_time( |
6a0f1f6d LP |
131 | m->event, |
132 | &m->jobs_in_progress_event_source, | |
133 | CLOCK_MONOTONIC, | |
134 | next, 0, | |
135 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
136 | if (r < 0) |
137 | return; | |
7dfbe2e3 TG |
138 | |
139 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
140 | } |
141 | ||
1fc464f6 | 142 | #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1)) |
03b717a3 | 143 | |
03b717a3 MS |
144 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
145 | char *p = buffer; | |
146 | ||
147 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
148 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
149 | ||
150 | if (pos > 1) { | |
6282c859 MS |
151 | if (pos > 2) |
152 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
153 | if (log_get_show_color()) |
154 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
155 | *p++ = '*'; |
156 | } | |
157 | ||
158 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
159 | if (log_get_show_color()) |
160 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
161 | *p++ = '*'; |
162 | } | |
163 | ||
64c3610b FB |
164 | if (log_get_show_color()) |
165 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
166 | |
167 | if (pos < width) { | |
64c3610b FB |
168 | if (log_get_show_color()) |
169 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 170 | *p++ = '*'; |
6282c859 MS |
171 | if (pos < width-1) |
172 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
173 | if (log_get_show_color()) |
174 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 175 | } |
03b717a3 MS |
176 | } |
177 | ||
cb8ccb22 | 178 | void manager_flip_auto_status(Manager *m, bool enable) { |
f755e3b7 LP |
179 | assert(m); |
180 | ||
cb8ccb22 ZJS |
181 | if (enable) { |
182 | if (m->show_status == SHOW_STATUS_AUTO) | |
183 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY); | |
184 | } else { | |
185 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
186 | manager_set_show_status(m, SHOW_STATUS_AUTO); | |
187 | } | |
188 | } | |
189 | ||
03b717a3 | 190 | static void manager_print_jobs_in_progress(Manager *m) { |
718db961 | 191 | _cleanup_free_ char *job_of_n = NULL; |
03b717a3 MS |
192 | Iterator i; |
193 | Job *j; | |
03b717a3 MS |
194 | unsigned counter = 0, print_nr; |
195 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
196 | unsigned cylon_pos; | |
8bb310c3 ZJS |
197 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
198 | uint64_t x; | |
03b717a3 | 199 | |
718db961 | 200 | assert(m); |
9c3349e2 | 201 | assert(m->n_running_jobs > 0); |
718db961 | 202 | |
cb8ccb22 | 203 | manager_flip_auto_status(m, true); |
d450b6f2 | 204 | |
03b717a3 MS |
205 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
206 | ||
207 | HASHMAP_FOREACH(j, m->jobs, i) | |
208 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
209 | break; | |
210 | ||
e970a72e MS |
211 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
212 | * so the above loop must have succeeded in finding j. */ | |
213 | assert(counter == print_nr + 1); | |
51d122af | 214 | assert(j); |
5a82a91a | 215 | |
03b717a3 MS |
216 | cylon_pos = m->jobs_in_progress_iteration % 14; |
217 | if (cylon_pos >= 8) | |
218 | cylon_pos = 14 - cylon_pos; | |
219 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
220 | ||
8bb310c3 ZJS |
221 | m->jobs_in_progress_iteration++; |
222 | ||
d6483ba7 ZJS |
223 | if (m->n_running_jobs > 1) { |
224 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
225 | job_of_n = NULL; | |
226 | } | |
03b717a3 | 227 | |
8bb310c3 ZJS |
228 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
229 | if (job_get_timeout(j, &x) > 0) | |
230 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
231 | ||
127d5fd1 | 232 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
233 | "%sA %s job is running for %s (%s / %s)", |
234 | strempty(job_of_n), | |
235 | job_type_to_string(j->type), | |
236 | unit_description(j->unit), | |
237 | time, limit); | |
03b717a3 MS |
238 | } |
239 | ||
e46b13c8 ZJS |
240 | static int have_ask_password(void) { |
241 | _cleanup_closedir_ DIR *dir; | |
8fb3f009 | 242 | struct dirent *de; |
e46b13c8 ZJS |
243 | |
244 | dir = opendir("/run/systemd/ask-password"); | |
245 | if (!dir) { | |
246 | if (errno == ENOENT) | |
247 | return false; | |
248 | else | |
249 | return -errno; | |
250 | } | |
251 | ||
8fb3f009 | 252 | FOREACH_DIRENT_ALL(de, dir, return -errno) { |
e46b13c8 ZJS |
253 | if (startswith(de->d_name, "ask.")) |
254 | return true; | |
255 | } | |
8fb3f009 | 256 | return false; |
e46b13c8 ZJS |
257 | } |
258 | ||
259 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
260 | int fd, uint32_t revents, void *userdata) { | |
261 | Manager *m = userdata; | |
262 | ||
263 | assert(m); | |
264 | ||
265 | flush_fd(fd); | |
266 | ||
267 | m->have_ask_password = have_ask_password(); | |
268 | if (m->have_ask_password < 0) | |
269 | /* Log error but continue. Negative have_ask_password | |
270 | * is treated as unknown status. */ | |
c33b3297 | 271 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
272 | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static void manager_close_ask_password(Manager *m) { | |
277 | assert(m); | |
278 | ||
e46b13c8 | 279 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 280 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
281 | m->have_ask_password = -EINVAL; |
282 | } | |
283 | ||
284 | static int manager_check_ask_password(Manager *m) { | |
285 | int r; | |
286 | ||
287 | assert(m); | |
288 | ||
289 | if (!m->ask_password_event_source) { | |
290 | assert(m->ask_password_inotify_fd < 0); | |
291 | ||
292 | mkdir_p_label("/run/systemd/ask-password", 0755); | |
293 | ||
294 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 MS |
295 | if (m->ask_password_inotify_fd < 0) |
296 | return log_error_errno(errno, "inotify_init1() failed: %m"); | |
e46b13c8 ZJS |
297 | |
298 | if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) { | |
56f64d95 | 299 | log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
300 | manager_close_ask_password(m); |
301 | return -errno; | |
302 | } | |
303 | ||
304 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
305 | m->ask_password_inotify_fd, EPOLLIN, | |
306 | manager_dispatch_ask_password_fd, m); | |
307 | if (r < 0) { | |
56f64d95 | 308 | log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
309 | manager_close_ask_password(m); |
310 | return -errno; | |
311 | } | |
312 | ||
7dfbe2e3 TG |
313 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
314 | ||
e46b13c8 ZJS |
315 | /* Queries might have been added meanwhile... */ |
316 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
317 | m->ask_password_inotify_fd, EPOLLIN, m); | |
318 | } | |
319 | ||
320 | return m->have_ask_password; | |
321 | } | |
322 | ||
31a7eb86 | 323 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
324 | int r; |
325 | ||
718db961 LP |
326 | assert(m); |
327 | ||
328 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
329 | return 0; |
330 | ||
331 | if (m->idle_pipe[2] < 0) | |
332 | return 0; | |
333 | ||
151b9b96 | 334 | 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 |
335 | if (r < 0) |
336 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 337 | |
7dfbe2e3 TG |
338 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
339 | ||
31a7eb86 | 340 | return 0; |
31a7eb86 ZJS |
341 | } |
342 | ||
718db961 LP |
343 | static void manager_close_idle_pipe(Manager *m) { |
344 | assert(m); | |
31a7eb86 | 345 | |
cd72bd8a LP |
346 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
347 | ||
3d94f76c LP |
348 | safe_close_pair(m->idle_pipe); |
349 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
350 | } |
351 | ||
8742514c | 352 | static int manager_setup_time_change(Manager *m) { |
718db961 | 353 | int r; |
b92bea5d ZJS |
354 | |
355 | /* We only care for the cancellation event, hence we set the | |
356 | * timeout to the latest possible value. */ | |
357 | struct itimerspec its = { | |
358 | .it_value.tv_sec = TIME_T_MAX, | |
359 | }; | |
8742514c | 360 | |
718db961 LP |
361 | assert(m); |
362 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
8742514c | 363 | |
e0a3da1f | 364 | if (m->test_run_flags) |
0d8c31ff ZJS |
365 | return 0; |
366 | ||
8742514c LP |
367 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever |
368 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
369 | ||
718db961 | 370 | m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); |
4a62c710 MS |
371 | if (m->time_change_fd < 0) |
372 | return log_error_errno(errno, "Failed to create timerfd: %m"); | |
8742514c | 373 | |
718db961 | 374 | if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
56f64d95 | 375 | log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); |
03e334a1 | 376 | m->time_change_fd = safe_close(m->time_change_fd); |
8742514c LP |
377 | return 0; |
378 | } | |
379 | ||
151b9b96 | 380 | 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 |
381 | if (r < 0) |
382 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 383 | |
7dfbe2e3 TG |
384 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
385 | ||
8742514c LP |
386 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
80876c20 | 391 | static int enable_special_signals(Manager *m) { |
718db961 | 392 | _cleanup_close_ int fd = -1; |
80876c20 LP |
393 | |
394 | assert(m); | |
395 | ||
e0a3da1f | 396 | if (m->test_run_flags) |
37453b3a EV |
397 | return 0; |
398 | ||
a41b539e | 399 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
400 | * this will fail with EPERM (older) or EINVAL (newer), so |
401 | * ignore that. */ | |
4c701096 | 402 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 403 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 404 | |
a41b539e LP |
405 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
406 | if (fd < 0) { | |
407 | /* Support systems without virtual console */ | |
408 | if (fd != -ENOENT) | |
56f64d95 | 409 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 410 | } else { |
80876c20 LP |
411 | /* Enable that we get SIGWINCH on kbrequest */ |
412 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 413 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
414 | } |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
ce578209 | 419 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
420 | struct sigaction sa = { |
421 | .sa_handler = SIG_DFL, | |
422 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
423 | }; | |
718db961 LP |
424 | sigset_t mask; |
425 | int r; | |
60918275 | 426 | |
ce578209 LP |
427 | assert(m); |
428 | ||
57c0c30e LP |
429 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
430 | ||
4dffec14 LP |
431 | /* We make liberal use of realtime signals here. On |
432 | * Linux/glibc we have 30 of them (with the exception of Linux | |
433 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
434 | * (aka SIGRTMAX). */ | |
7d793605 | 435 | |
4dffec14 | 436 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
437 | sigset_add_many(&mask, |
438 | SIGCHLD, /* Child died */ | |
439 | SIGTERM, /* Reexecute daemon */ | |
440 | SIGHUP, /* Reload configuration */ | |
441 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
442 | SIGUSR2, /* systemd: dump status */ | |
443 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
444 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
445 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 446 | |
7d793605 | 447 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 448 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
449 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
450 | SIGRTMIN+3, /* systemd: start halt.target */ | |
451 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
452 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 453 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
454 | |
455 | /* ... space for more special targets ... */ | |
456 | ||
0003d1ab LP |
457 | SIGRTMIN+13, /* systemd: Immediate halt */ |
458 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
459 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
460 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
461 | |
462 | /* ... space for more immediate system state changes ... */ | |
463 | ||
0658666b LP |
464 | SIGRTMIN+20, /* systemd: enable status messages */ |
465 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
466 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
467 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 468 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
469 | |
470 | /* .. one free signal here ... */ | |
471 | ||
472 | #if !defined(__hppa64__) && !defined(__hppa__) | |
473 | /* Apparently Linux on hppa has fewer RT | |
474 | * signals (SIGRTMAX is SIGRTMIN+25 there), | |
475 | * hence let's not try to make use of them | |
476 | * here. Since these commands are accessible | |
477 | * by different means and only really a safety | |
478 | * net, the missing functionality on hppa | |
479 | * shouldn't matter. */ | |
480 | ||
4cfa2c99 | 481 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
482 | SIGRTMIN+27, /* systemd: set log target to console */ |
483 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
ee33e53a | 484 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */ |
4dffec14 LP |
485 | |
486 | /* ... one free signal here SIGRTMIN+30 ... */ | |
487 | #endif | |
7d793605 | 488 | -1); |
ce578209 LP |
489 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
490 | ||
718db961 LP |
491 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
492 | if (m->signal_fd < 0) | |
ce578209 LP |
493 | return -errno; |
494 | ||
151b9b96 | 495 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
496 | if (r < 0) |
497 | return r; | |
ce578209 | 498 | |
7dfbe2e3 TG |
499 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
500 | ||
d8fdc620 LP |
501 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
502 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
503 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
504 | * status information before detecting that there's no process in a cgroup. */ | |
505 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
506 | if (r < 0) |
507 | return r; | |
508 | ||
463d0d15 | 509 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 510 | return enable_special_signals(m); |
e1414003 | 511 | |
ce578209 LP |
512 | return 0; |
513 | } | |
514 | ||
f069efb4 LP |
515 | static void manager_clean_environment(Manager *m) { |
516 | assert(m); | |
517 | ||
518 | /* Let's remove some environment variables that we | |
519 | * need ourselves to communicate with our clients */ | |
520 | strv_env_unset_many( | |
521 | m->environment, | |
522 | "NOTIFY_SOCKET", | |
523 | "MAINPID", | |
524 | "MANAGERPID", | |
525 | "LISTEN_PID", | |
526 | "LISTEN_FDS", | |
8dd4c05b | 527 | "LISTEN_FDNAMES", |
f069efb4 LP |
528 | "WATCHDOG_PID", |
529 | "WATCHDOG_USEC", | |
4b58153d | 530 | "INVOCATION_ID", |
f069efb4 LP |
531 | NULL); |
532 | } | |
533 | ||
e21fea24 | 534 | static int manager_default_environment(Manager *m) { |
71ecc858 LP |
535 | assert(m); |
536 | ||
463d0d15 | 537 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
538 | /* The system manager always starts with a clean |
539 | * environment for its children. It does not import | |
71cb7d30 | 540 | * the kernel's or the parents' exported variables. |
e21fea24 | 541 | * |
71cb7d30 | 542 | * The initial passed environment is untouched to keep |
e21fea24 KS |
543 | * /proc/self/environ valid; it is used for tagging |
544 | * the init process inside containers. */ | |
43638332 ZJS |
545 | m->environment = strv_new("PATH=" DEFAULT_PATH, |
546 | NULL); | |
e21fea24 KS |
547 | |
548 | /* Import locale variables LC_*= from configuration */ | |
549 | locale_setup(&m->environment); | |
71cb7d30 | 550 | } else |
e21fea24 KS |
551 | /* The user manager passes its own environment |
552 | * along to its children. */ | |
553 | m->environment = strv_copy(environ); | |
43d03a83 | 554 | |
e21fea24 KS |
555 | if (!m->environment) |
556 | return -ENOMEM; | |
8b55b8c4 | 557 | |
f069efb4 | 558 | manager_clean_environment(m); |
9d5a3757 LP |
559 | strv_sort(m->environment); |
560 | ||
e21fea24 | 561 | return 0; |
71ecc858 LP |
562 | } |
563 | ||
3536f49e YW |
564 | static int manager_setup_prefix(Manager *m) { |
565 | struct table_entry { | |
566 | uint64_t type; | |
567 | const char *suffix; | |
568 | }; | |
569 | ||
72fd1768 | 570 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
3536f49e YW |
571 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
572 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
573 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
574 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
575 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, | |
576 | }; | |
577 | ||
72fd1768 | 578 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
3536f49e YW |
579 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
580 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
c6218495 LP |
581 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, |
582 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
583 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
3536f49e YW |
584 | }; |
585 | ||
586 | const struct table_entry *p; | |
587 | ExecDirectoryType i; | |
588 | int r; | |
589 | ||
590 | assert(m); | |
591 | ||
592 | if (MANAGER_IS_SYSTEM(m)) | |
593 | p = paths_system; | |
594 | else | |
595 | p = paths_user; | |
596 | ||
72fd1768 | 597 | for (i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
3536f49e YW |
598 | r = sd_path_home(p[i].type, p[i].suffix, &m->prefix[i]); |
599 | if (r < 0) | |
600 | return r; | |
601 | } | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
e0a3da1f | 606 | int manager_new(UnitFileScope scope, unsigned test_run_flags, Manager **_m) { |
ce578209 | 607 | Manager *m; |
e3dd987c | 608 | int r; |
8e274523 LP |
609 | |
610 | assert(_m); | |
463d0d15 | 611 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 612 | |
915b3753 LP |
613 | m = new0(Manager, 1); |
614 | if (!m) | |
8e274523 | 615 | return -ENOMEM; |
60918275 | 616 | |
463d0d15 | 617 | m->unit_file_scope = scope; |
a16e1123 | 618 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
bd8f585b | 619 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; |
9ded9cd1 | 620 | m->default_tasks_accounting = true; |
79baeeb9 | 621 | m->default_tasks_max = UINT64_MAX; |
bd389aa7 LP |
622 | m->default_timeout_start_usec = DEFAULT_TIMEOUT_USEC; |
623 | m->default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC; | |
624 | m->default_restart_usec = DEFAULT_RESTART_USEC; | |
80876c20 | 625 | |
349cc4a5 | 626 | #if ENABLE_EFI |
463d0d15 | 627 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
628 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
629 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
630 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
631 | #endif |
632 | ||
f2341e0a | 633 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
634 | if (MANAGER_IS_SYSTEM(m)) { |
635 | m->unit_log_field = "UNIT="; | |
636 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
637 | |
638 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 639 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
640 | } else { |
641 | m->unit_log_field = "USER_UNIT="; | |
642 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
643 | |
644 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 645 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 646 | } |
f2341e0a | 647 | |
718db961 | 648 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; |
8742514c | 649 | |
d8fdc620 | 650 | m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = |
232f6754 | 651 | m->dev_autofs_fd = m->private_listen_fd = m->cgroup_inotify_fd = |
d8fdc620 | 652 | m->ask_password_inotify_fd = -1; |
d379d442 | 653 | |
00d9ef85 LP |
654 | m->user_lookup_fds[0] = m->user_lookup_fds[1] = -1; |
655 | ||
ea430986 | 656 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 657 | |
e46b13c8 | 658 | m->have_ask_password = -EINVAL; /* we don't know */ |
ae2a2c53 | 659 | m->first_boot = -1; |
e46b13c8 | 660 | |
e0a3da1f | 661 | m->test_run_flags = test_run_flags; |
0d8c31ff | 662 | |
2e5c94b9 LP |
663 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
664 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
665 | ||
e21fea24 KS |
666 | r = manager_default_environment(m); |
667 | if (r < 0) | |
1137a57c LP |
668 | goto fail; |
669 | ||
d5099efc | 670 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 671 | if (r < 0) |
60918275 LP |
672 | goto fail; |
673 | ||
d5099efc | 674 | r = hashmap_ensure_allocated(&m->jobs, NULL); |
718db961 | 675 | if (r < 0) |
60918275 LP |
676 | goto fail; |
677 | ||
d5099efc | 678 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); |
718db961 | 679 | if (r < 0) |
9152c765 LP |
680 | goto fail; |
681 | ||
d5099efc | 682 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 683 | if (r < 0) |
05e343b7 LP |
684 | goto fail; |
685 | ||
718db961 LP |
686 | r = sd_event_default(&m->event); |
687 | if (r < 0) | |
8742514c LP |
688 | goto fail; |
689 | ||
151b9b96 | 690 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); |
752b5905 LP |
691 | if (r < 0) |
692 | goto fail; | |
693 | ||
694 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
695 | if (r < 0) | |
696 | goto fail; | |
697 | ||
698 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
699 | if (r < 0) | |
700 | goto fail; | |
701 | ||
7dfbe2e3 TG |
702 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); |
703 | ||
8742514c LP |
704 | r = manager_setup_signals(m); |
705 | if (r < 0) | |
9152c765 LP |
706 | goto fail; |
707 | ||
8742514c LP |
708 | r = manager_setup_cgroup(m); |
709 | if (r < 0) | |
8e274523 LP |
710 | goto fail; |
711 | ||
8742514c LP |
712 | r = manager_setup_time_change(m); |
713 | if (r < 0) | |
8c47c732 LP |
714 | goto fail; |
715 | ||
9670d583 LP |
716 | m->udev = udev_new(); |
717 | if (!m->udev) { | |
718 | r = -ENOMEM; | |
719 | goto fail; | |
720 | } | |
721 | ||
d3070fbd LP |
722 | if (MANAGER_IS_SYSTEM(m)) { |
723 | r = mkdir_label("/run/systemd/units", 0755); | |
724 | if (r < 0 && r != -EEXIST) | |
725 | goto fail; | |
726 | } | |
727 | ||
232f6754 ZJS |
728 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
729 | * since they might have gotten serialized across the reexec. */ | |
d86f9d52 | 730 | |
72bc8d00 LP |
731 | m->taint_usr = dir_is_empty("/usr") > 0; |
732 | ||
3536f49e YW |
733 | r = manager_setup_prefix(m); |
734 | if (r < 0) | |
735 | goto fail; | |
736 | ||
8e274523 LP |
737 | *_m = m; |
738 | return 0; | |
60918275 LP |
739 | |
740 | fail: | |
741 | manager_free(m); | |
8e274523 | 742 | return r; |
60918275 LP |
743 | } |
744 | ||
d86f9d52 | 745 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 746 | int r; |
d86f9d52 | 747 | |
e0a3da1f | 748 | if (m->test_run_flags) |
0d8c31ff ZJS |
749 | return 0; |
750 | ||
d86f9d52 LP |
751 | if (m->notify_fd < 0) { |
752 | _cleanup_close_ int fd = -1; | |
920b52e4 | 753 | union sockaddr_union sa = { |
7181dbdb LP |
754 | .sa.sa_family = AF_UNIX, |
755 | }; | |
55836941 | 756 | static const int one = 1; |
d86f9d52 LP |
757 | |
758 | /* First free all secondary fields */ | |
a1e58e8e | 759 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
760 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
761 | ||
762 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
763 | if (fd < 0) |
764 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 765 | |
a47806fa LP |
766 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
767 | ||
3536f49e | 768 | m->notify_socket = strappend(m->prefix[EXEC_DIRECTORY_RUNTIME], "/systemd/notify"); |
498e87d6 LP |
769 | if (!m->notify_socket) |
770 | return log_oom(); | |
771 | ||
772 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
f0e62e89 | 773 | (void) unlink(m->notify_socket); |
7181dbdb LP |
774 | |
775 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
fc2fffe7 | 776 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
4a62c710 MS |
777 | if (r < 0) |
778 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
d86f9d52 LP |
779 | |
780 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
781 | if (r < 0) |
782 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
d86f9d52 | 783 | |
d86f9d52 LP |
784 | m->notify_fd = fd; |
785 | fd = -1; | |
786 | ||
787 | log_debug("Using notification socket %s", m->notify_socket); | |
788 | } | |
789 | ||
790 | if (!m->notify_event_source) { | |
151b9b96 | 791 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
792 | if (r < 0) |
793 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 794 | |
d8fdc620 LP |
795 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
796 | * service an exit message belongs. */ | |
df006034 | 797 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7); |
23bbb0de MS |
798 | if (r < 0) |
799 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
800 | |
801 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
802 | } |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
d8fdc620 LP |
807 | static int manager_setup_cgroups_agent(Manager *m) { |
808 | ||
809 | static const union sockaddr_union sa = { | |
810 | .un.sun_family = AF_UNIX, | |
811 | .un.sun_path = "/run/systemd/cgroups-agent", | |
812 | }; | |
813 | int r; | |
814 | ||
815 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
816 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
817 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
818 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
819 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
820 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
821 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
822 | * we thus won't lose messages. | |
823 | * | |
824 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
825 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
826 | * bus for these messages. */ | |
827 | ||
e0a3da1f | 828 | if (m->test_run_flags) |
d8fdc620 LP |
829 | return 0; |
830 | ||
831 | if (!MANAGER_IS_SYSTEM(m)) | |
832 | return 0; | |
833 | ||
c22800e4 | 834 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
835 | if (r < 0) |
836 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
837 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
838 | return 0; |
839 | ||
840 | if (m->cgroups_agent_fd < 0) { | |
841 | _cleanup_close_ int fd = -1; | |
842 | ||
843 | /* First free all secondary fields */ | |
844 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
845 | ||
846 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
847 | if (fd < 0) | |
848 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
849 | ||
850 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
851 | ||
852 | (void) unlink(sa.un.sun_path); | |
853 | ||
854 | /* Only allow root to connect to this socket */ | |
855 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 856 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
857 | if (r < 0) |
858 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
859 | ||
860 | m->cgroups_agent_fd = fd; | |
861 | fd = -1; | |
862 | } | |
863 | ||
864 | if (!m->cgroups_agent_event_source) { | |
865 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
866 | if (r < 0) | |
867 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
868 | ||
869 | /* Process cgroups notifications early, but after having processed service notification messages or | |
870 | * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, | |
871 | * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of | |
872 | * cgroup inotify for the unified cgroup stuff. */ | |
09e24654 | 873 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-4); |
d8fdc620 LP |
874 | if (r < 0) |
875 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
876 | ||
877 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
878 | } | |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
00d9ef85 LP |
883 | static int manager_setup_user_lookup_fd(Manager *m) { |
884 | int r; | |
885 | ||
886 | assert(m); | |
887 | ||
888 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
889 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
890 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
891 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
892 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
893 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
894 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
895 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
896 | * this purpose. | |
897 | * | |
898 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
899 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
900 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
901 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
902 | * | |
903 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
904 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
905 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
906 | ||
907 | if (m->user_lookup_fds[0] < 0) { | |
908 | ||
909 | /* Free all secondary fields */ | |
910 | safe_close_pair(m->user_lookup_fds); | |
911 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
912 | ||
913 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
914 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
915 | ||
916 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
917 | } | |
918 | ||
919 | if (!m->user_lookup_event_source) { | |
920 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
921 | if (r < 0) | |
922 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
923 | ||
924 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
925 | * resolutions */ | |
926 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-8); | |
927 | if (r < 0) | |
928 | return log_error_errno(errno, "Failed to set priority ot user lookup event source: %m"); | |
929 | ||
930 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
931 | } | |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
d86f9d52 LP |
936 | static int manager_connect_bus(Manager *m, bool reexecuting) { |
937 | bool try_bus_connect; | |
5463fa0a | 938 | Unit *u = NULL; |
d86f9d52 LP |
939 | |
940 | assert(m); | |
941 | ||
e0a3da1f | 942 | if (m->test_run_flags) |
0d8c31ff ZJS |
943 | return 0; |
944 | ||
5463fa0a MS |
945 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); |
946 | ||
d86f9d52 | 947 | try_bus_connect = |
41dfa61d | 948 | (u && SERVICE(u)->deserialized_state == SERVICE_RUNNING) && |
5463fa0a MS |
949 | (reexecuting || |
950 | (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"))); | |
d86f9d52 | 951 | |
ff9b60f3 | 952 | /* Try to connect to the buses, if possible. */ |
d86f9d52 LP |
953 | return bus_init(m, try_bus_connect); |
954 | } | |
955 | ||
23a177ef | 956 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 957 | Unit *u; |
23a177ef LP |
958 | unsigned n = 0; |
959 | ||
960 | assert(m); | |
961 | ||
595ed347 MS |
962 | while ((u = m->cleanup_queue)) { |
963 | assert(u->in_cleanup_queue); | |
23a177ef | 964 | |
595ed347 | 965 | unit_free(u); |
23a177ef LP |
966 | n++; |
967 | } | |
968 | ||
969 | return n; | |
970 | } | |
971 | ||
eced69b3 | 972 | enum { |
35b8ca3a | 973 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
974 | GC_OFFSET_UNSURE, /* No clue */ |
975 | GC_OFFSET_GOOD, /* We still need this unit */ | |
976 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
977 | _GC_OFFSET_MAX | |
978 | }; | |
979 | ||
00d9ef85 | 980 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f | 981 | Unit *other; |
eef85c4a LP |
982 | Iterator i; |
983 | void *v; | |
4892084f LN |
984 | |
985 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
986 | ||
987 | /* Recursively mark referenced units as GOOD as well */ | |
eef85c4a | 988 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCES], i) |
4892084f LN |
989 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
990 | unit_gc_mark_good(other, gc_marker); | |
991 | } | |
992 | ||
eced69b3 | 993 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 994 | Unit *other; |
eced69b3 | 995 | bool is_bad; |
eef85c4a LP |
996 | Iterator i; |
997 | void *v; | |
701cc384 LP |
998 | |
999 | assert(u); | |
1000 | ||
4c701096 YW |
1001 | if (IN_SET(u->gc_marker - gc_marker, |
1002 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1003 | return; |
1004 | ||
ac155bb8 | 1005 | if (u->in_cleanup_queue) |
701cc384 LP |
1006 | goto bad; |
1007 | ||
1008 | if (unit_check_gc(u)) | |
1009 | goto good; | |
1010 | ||
ac155bb8 | 1011 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1012 | |
1013 | is_bad = true; | |
1014 | ||
eef85c4a | 1015 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
1016 | unit_gc_sweep(other, gc_marker); |
1017 | ||
ac155bb8 | 1018 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1019 | goto good; |
eced69b3 | 1020 | |
ac155bb8 | 1021 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1022 | is_bad = false; |
701cc384 LP |
1023 | } |
1024 | ||
eced69b3 LP |
1025 | if (is_bad) |
1026 | goto bad; | |
1027 | ||
1028 | /* We were unable to find anything out about this entry, so | |
1029 | * let's investigate it later */ | |
ac155bb8 | 1030 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1031 | unit_add_to_gc_queue(u); |
1032 | return; | |
1033 | ||
701cc384 | 1034 | bad: |
eced69b3 LP |
1035 | /* We definitely know that this one is not useful anymore, so |
1036 | * let's mark it for deletion */ | |
ac155bb8 | 1037 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1038 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1039 | return; |
1040 | ||
1041 | good: | |
4892084f | 1042 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1043 | } |
1044 | ||
c5a97ed1 LP |
1045 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1046 | unsigned n = 0, gc_marker; | |
595ed347 | 1047 | Unit *u; |
701cc384 LP |
1048 | |
1049 | assert(m); | |
1050 | ||
cf1265e1 | 1051 | /* log_debug("Running GC..."); */ |
701cc384 | 1052 | |
eced69b3 LP |
1053 | m->gc_marker += _GC_OFFSET_MAX; |
1054 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1055 | m->gc_marker = 1; |
701cc384 | 1056 | |
eced69b3 LP |
1057 | gc_marker = m->gc_marker; |
1058 | ||
c5a97ed1 | 1059 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1060 | assert(u->in_gc_queue); |
701cc384 | 1061 | |
595ed347 | 1062 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1063 | |
c5a97ed1 | 1064 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1065 | u->in_gc_queue = false; |
701cc384 LP |
1066 | |
1067 | n++; | |
1068 | ||
4c701096 YW |
1069 | if (IN_SET(u->gc_marker - gc_marker, |
1070 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1071 | if (u->id) |
f2341e0a | 1072 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1073 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1074 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1075 | } |
1076 | } | |
1077 | ||
701cc384 LP |
1078 | return n; |
1079 | } | |
1080 | ||
c5a97ed1 LP |
1081 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1082 | unsigned n = 0; | |
1083 | Job *j; | |
1084 | ||
1085 | assert(m); | |
1086 | ||
1087 | while ((j = m->gc_job_queue)) { | |
1088 | assert(j->in_gc_queue); | |
1089 | ||
1090 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1091 | j->in_gc_queue = false; | |
1092 | ||
1093 | n++; | |
1094 | ||
1095 | if (job_check_gc(j)) | |
1096 | continue; | |
1097 | ||
1098 | log_unit_debug(j->unit, "Collecting job."); | |
1099 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1100 | } | |
1101 | ||
1102 | return n; | |
1103 | } | |
1104 | ||
a16e1123 | 1105 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1106 | Unit *u; |
60918275 LP |
1107 | |
1108 | assert(m); | |
1109 | ||
87f0e418 LP |
1110 | while ((u = hashmap_first(m->units))) |
1111 | unit_free(u); | |
964e0949 LP |
1112 | |
1113 | manager_dispatch_cleanup_queue(m); | |
1114 | ||
1115 | assert(!m->load_queue); | |
1116 | assert(!m->run_queue); | |
1117 | assert(!m->dbus_unit_queue); | |
1118 | assert(!m->dbus_job_queue); | |
1119 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1120 | assert(!m->gc_unit_queue); |
1121 | assert(!m->gc_job_queue); | |
964e0949 | 1122 | |
964e0949 LP |
1123 | assert(hashmap_isempty(m->jobs)); |
1124 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1125 | |
1126 | m->n_on_console = 0; | |
1127 | m->n_running_jobs = 0; | |
a16e1123 LP |
1128 | } |
1129 | ||
06d8d842 | 1130 | Manager* manager_free(Manager *m) { |
a16e1123 | 1131 | UnitType c; |
c93ff2e9 | 1132 | int i; |
35aba85a | 1133 | ExecDirectoryType dt; |
87f0e418 | 1134 | |
06d8d842 ZJS |
1135 | if (!m) |
1136 | return NULL; | |
a16e1123 LP |
1137 | |
1138 | manager_clear_jobs_and_units(m); | |
23a177ef | 1139 | |
7824bbeb LP |
1140 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
1141 | if (unit_vtable[c]->shutdown) | |
1142 | unit_vtable[c]->shutdown(m); | |
1143 | ||
a1f31f47 | 1144 | /* If we reexecute ourselves, we keep the root cgroup around */ |
c6c18be3 | 1145 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 1146 | |
07a78643 | 1147 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1148 | |
5e8d1c9a | 1149 | bus_done(m); |
ea430986 | 1150 | |
29206d46 LP |
1151 | dynamic_user_vacuum(m, false); |
1152 | hashmap_free(m->dynamic_users); | |
1153 | ||
87f0e418 | 1154 | hashmap_free(m->units); |
4b58153d | 1155 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1156 | hashmap_free(m->jobs); |
5ba6985b LP |
1157 | hashmap_free(m->watch_pids1); |
1158 | hashmap_free(m->watch_pids2); | |
05e343b7 | 1159 | hashmap_free(m->watch_bus); |
9152c765 | 1160 | |
95ae05c0 | 1161 | set_free(m->startup_units); |
f755e3b7 LP |
1162 | set_free(m->failed_units); |
1163 | ||
718db961 LP |
1164 | sd_event_source_unref(m->signal_event_source); |
1165 | sd_event_source_unref(m->notify_event_source); | |
d8fdc620 | 1166 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 LP |
1167 | sd_event_source_unref(m->time_change_event_source); |
1168 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
752b5905 | 1169 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1170 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1171 | |
03e334a1 LP |
1172 | safe_close(m->signal_fd); |
1173 | safe_close(m->notify_fd); | |
d8fdc620 | 1174 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1175 | safe_close(m->time_change_fd); |
00d9ef85 | 1176 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1177 | |
e46b13c8 ZJS |
1178 | manager_close_ask_password(m); |
1179 | ||
718db961 LP |
1180 | manager_close_idle_pipe(m); |
1181 | ||
9670d583 | 1182 | udev_unref(m->udev); |
718db961 | 1183 | sd_event_unref(m->event); |
60918275 | 1184 | |
c952c6ec LP |
1185 | free(m->notify_socket); |
1186 | ||
84e3543e | 1187 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 1188 | strv_free(m->environment); |
036643a2 | 1189 | |
4ad49000 | 1190 | hashmap_free(m->cgroup_unit); |
c6c18be3 | 1191 | set_free_free(m->unit_path_cache); |
33be102a | 1192 | |
664f88a7 LP |
1193 | free(m->switch_root); |
1194 | free(m->switch_root_init); | |
1195 | ||
517d56b1 | 1196 | for (i = 0; i < _RLIMIT_MAX; i++) |
d9814c76 | 1197 | m->rlimit[i] = mfree(m->rlimit[i]); |
c93ff2e9 | 1198 | |
a57f7e2c LP |
1199 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1200 | hashmap_free(m->units_requiring_mounts_for); | |
1201 | ||
00d9ef85 LP |
1202 | hashmap_free(m->uid_refs); |
1203 | hashmap_free(m->gid_refs); | |
1204 | ||
72fd1768 | 1205 | for (dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a YW |
1206 | m->prefix[dt] = mfree(m->prefix[dt]); |
1207 | ||
6b430fdb | 1208 | return mfree(m); |
60918275 LP |
1209 | } |
1210 | ||
ba64af90 | 1211 | void manager_enumerate(Manager *m) { |
f50e0a01 | 1212 | UnitType c; |
f50e0a01 LP |
1213 | |
1214 | assert(m); | |
1215 | ||
a16e1123 LP |
1216 | /* Let's ask every type to load all units from disk/kernel |
1217 | * that it might know */ | |
0faacd47 | 1218 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1219 | if (!unit_type_supported(c)) { |
03afec3c | 1220 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1221 | continue; |
a57f7e2c | 1222 | } |
f50e0a01 | 1223 | |
0faacd47 LP |
1224 | if (!unit_vtable[c]->enumerate) |
1225 | continue; | |
1226 | ||
ba64af90 | 1227 | unit_vtable[c]->enumerate(m); |
0faacd47 LP |
1228 | } |
1229 | ||
f50e0a01 | 1230 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1231 | } |
1232 | ||
007c6337 | 1233 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1234 | Iterator i; |
1235 | Unit *u; | |
1236 | char *k; | |
007c6337 | 1237 | int r; |
a16e1123 LP |
1238 | |
1239 | assert(m); | |
f50e0a01 LP |
1240 | |
1241 | /* Then, let's set up their initial state. */ | |
1242 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1243 | ||
1244 | /* ignore aliases */ | |
ac155bb8 | 1245 | if (u->id != k) |
f50e0a01 LP |
1246 | continue; |
1247 | ||
007c6337 LP |
1248 | r = unit_coldplug(u); |
1249 | if (r < 0) | |
1250 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1251 | } |
a16e1123 LP |
1252 | } |
1253 | ||
fe51822e LP |
1254 | static void manager_build_unit_path_cache(Manager *m) { |
1255 | char **i; | |
fe51822e LP |
1256 | int r; |
1257 | ||
1258 | assert(m); | |
1259 | ||
1260 | set_free_free(m->unit_path_cache); | |
1261 | ||
d5099efc | 1262 | m->unit_path_cache = set_new(&string_hash_ops); |
874310b7 | 1263 | if (!m->unit_path_cache) { |
d063a527 LP |
1264 | r = -ENOMEM; |
1265 | goto fail; | |
fe51822e LP |
1266 | } |
1267 | ||
1268 | /* This simply builds a list of files we know exist, so that | |
1269 | * we don't always have to go to disk */ | |
1270 | ||
a3c4eb07 | 1271 | STRV_FOREACH(i, m->lookup_paths.search_path) { |
d063a527 | 1272 | _cleanup_closedir_ DIR *d = NULL; |
fe51822e LP |
1273 | struct dirent *de; |
1274 | ||
bd0af849 ZJS |
1275 | d = opendir(*i); |
1276 | if (!d) { | |
874310b7 | 1277 | if (errno != ENOENT) |
d063a527 | 1278 | log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); |
fe51822e LP |
1279 | continue; |
1280 | } | |
1281 | ||
d063a527 | 1282 | FOREACH_DIRENT(de, d, r = -errno; goto fail) { |
fe51822e LP |
1283 | char *p; |
1284 | ||
605405c6 | 1285 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name); |
44d91056 | 1286 | if (!p) { |
fe51822e LP |
1287 | r = -ENOMEM; |
1288 | goto fail; | |
1289 | } | |
1290 | ||
ef42202a ZJS |
1291 | r = set_consume(m->unit_path_cache, p); |
1292 | if (r < 0) | |
fe51822e | 1293 | goto fail; |
fe51822e | 1294 | } |
fe51822e LP |
1295 | } |
1296 | ||
1297 | return; | |
1298 | ||
1299 | fail: | |
d063a527 LP |
1300 | log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); |
1301 | m->unit_path_cache = set_free_free(m->unit_path_cache); | |
fe51822e LP |
1302 | } |
1303 | ||
9ff1a6f1 | 1304 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1305 | Iterator i; |
9ff1a6f1 | 1306 | Unit *u; |
9588bc32 LP |
1307 | |
1308 | assert(m); | |
1309 | ||
1310 | HASHMAP_FOREACH(u, m->units, i) { | |
1311 | ||
1312 | if (fdset_size(fds) <= 0) | |
1313 | break; | |
1314 | ||
9ff1a6f1 LP |
1315 | if (!UNIT_VTABLE(u)->distribute_fds) |
1316 | continue; | |
9588bc32 | 1317 | |
9ff1a6f1 LP |
1318 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1319 | } | |
9588bc32 LP |
1320 | } |
1321 | ||
a16e1123 | 1322 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
17f01ace | 1323 | int r; |
a16e1123 LP |
1324 | |
1325 | assert(m); | |
1326 | ||
a1f31f47 ZJS |
1327 | /* If we are running in test mode, we still want to run the generators, |
1328 | * but we should not touch the real generator directories. */ | |
1329 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, | |
e0a3da1f | 1330 | m->test_run_flags ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
a1f31f47 | 1331 | NULL); |
e801700e ZJS |
1332 | if (r < 0) |
1333 | return r; | |
5a1e9937 | 1334 | |
64691d20 ZJS |
1335 | r = manager_run_environment_generators(m); |
1336 | if (r < 0) | |
1337 | return r; | |
1338 | ||
a1f31f47 ZJS |
1339 | /* Make sure the transient directory always exists, so that it remains |
1340 | * in the search path */ | |
1341 | r = mkdir_p_label(m->lookup_paths.transient, 0755); | |
1342 | if (r < 0) | |
17f01ace ZJS |
1343 | return log_error_errno(r, "Failed to create transient generator directory \"%s\": %m", |
1344 | m->lookup_paths.transient); | |
39591351 | 1345 | |
9f9f0342 | 1346 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_GENERATORS_START); |
a3c4eb07 | 1347 | r = manager_run_generators(m); |
9f9f0342 | 1348 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_GENERATORS_FINISH); |
07719a21 LP |
1349 | if (r < 0) |
1350 | return r; | |
1351 | ||
fd130612 | 1352 | /* If this is the first boot, and we are in the host system, then preset everything */ |
81fe6cde | 1353 | if (m->first_boot > 0 && |
fd130612 | 1354 | MANAGER_IS_SYSTEM(m) && |
e0a3da1f | 1355 | !m->test_run_flags) { |
81fe6cde | 1356 | |
17f01ace ZJS |
1357 | r = unit_file_preset_all(UNIT_FILE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); |
1358 | if (r < 0) | |
1359 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1360 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
28dd66ec LB |
1361 | else |
1362 | log_info("Populated /etc with preset unit settings."); | |
1363 | } | |
1364 | ||
a1453343 | 1365 | lookup_paths_reduce(&m->lookup_paths); |
fe51822e LP |
1366 | manager_build_unit_path_cache(m); |
1367 | ||
9f611ad8 LP |
1368 | /* If we will deserialize make sure that during enumeration |
1369 | * this is already known, so we increase the counter here | |
1370 | * already */ | |
1371 | if (serialization) | |
313cefa1 | 1372 | m->n_reloading++; |
9f611ad8 | 1373 | |
a16e1123 | 1374 | /* First, enumerate what we can from all config files */ |
9f9f0342 | 1375 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD_START); |
ba64af90 | 1376 | manager_enumerate(m); |
9f9f0342 | 1377 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD_FINISH); |
a16e1123 LP |
1378 | |
1379 | /* Second, deserialize if there is something to deserialize */ | |
07429866 | 1380 | if (serialization) { |
1cd974ed | 1381 | r = manager_deserialize(m, serialization, fds); |
07429866 | 1382 | if (r < 0) |
17f01ace | 1383 | return log_error_errno(r, "Deserialization failed: %m"); |
07429866 | 1384 | } |
a16e1123 | 1385 | |
01e10de3 LP |
1386 | /* Any fds left? Find some unit which wants them. This is |
1387 | * useful to allow container managers to pass some file | |
1388 | * descriptors to us pre-initialized. This enables | |
1389 | * socket-based activation of entire containers. */ | |
9ff1a6f1 | 1390 | manager_distribute_fds(m, fds); |
01e10de3 | 1391 | |
d86f9d52 LP |
1392 | /* We might have deserialized the notify fd, but if we didn't |
1393 | * then let's create the bus now */ | |
17f01ace ZJS |
1394 | r = manager_setup_notify(m); |
1395 | if (r < 0) | |
1396 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1397 | return r; | |
d86f9d52 | 1398 | |
17f01ace ZJS |
1399 | r = manager_setup_cgroups_agent(m); |
1400 | if (r < 0) | |
1401 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1402 | return r; | |
d8fdc620 | 1403 | |
17f01ace ZJS |
1404 | r = manager_setup_user_lookup_fd(m); |
1405 | if (r < 0) | |
1406 | /* This shouldn't fail, except if things are really broken. */ | |
1407 | return r; | |
00d9ef85 | 1408 | |
232f6754 | 1409 | /* Let's connect to the bus now. */ |
05a98afd LP |
1410 | (void) manager_connect_bus(m, !!serialization); |
1411 | ||
1412 | (void) bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); | |
1413 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
e3dd987c | 1414 | |
a16e1123 | 1415 | /* Third, fire things up! */ |
007c6337 | 1416 | manager_coldplug(m); |
a16e1123 | 1417 | |
29206d46 LP |
1418 | /* Release any dynamic users no longer referenced */ |
1419 | dynamic_user_vacuum(m, true); | |
1420 | ||
00d9ef85 LP |
1421 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
1422 | manager_vacuum_uid_refs(m); | |
1423 | manager_vacuum_gid_refs(m); | |
1424 | ||
9f611ad8 | 1425 | if (serialization) { |
a7556052 | 1426 | assert(m->n_reloading > 0); |
313cefa1 | 1427 | m->n_reloading--; |
71445ae7 LP |
1428 | |
1429 | /* Let's wait for the UnitNew/JobNew messages being | |
1430 | * sent, before we notify that the reload is | |
1431 | * finished */ | |
1432 | m->send_reloading_done = true; | |
9f611ad8 LP |
1433 | } |
1434 | ||
17f01ace | 1435 | return 0; |
f50e0a01 LP |
1436 | } |
1437 | ||
4bd29fe5 | 1438 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) { |
e5b5ae50 | 1439 | int r; |
7527cb52 | 1440 | Transaction *tr; |
e5b5ae50 LP |
1441 | |
1442 | assert(m); | |
1443 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1444 | assert(unit); |
e5b5ae50 | 1445 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1446 | |
7358dc02 ZJS |
1447 | if (mode == JOB_ISOLATE && type != JOB_START) |
1448 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
c497c7a9 | 1449 | |
7358dc02 ZJS |
1450 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1451 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
2528a7a6 | 1452 | |
f2341e0a | 1453 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1454 | |
c6497ccb | 1455 | type = job_type_collapse(type, unit); |
e0209d83 | 1456 | |
23ade460 | 1457 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1458 | if (!tr) |
1459 | return -ENOMEM; | |
11dd41ce | 1460 | |
4bd29fe5 | 1461 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
3742095b | 1462 | IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS), |
b94fbd30 | 1463 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
1464 | if (r < 0) |
1465 | goto tr_abort; | |
c497c7a9 | 1466 | |
7527cb52 MS |
1467 | if (mode == JOB_ISOLATE) { |
1468 | r = transaction_add_isolate_jobs(tr, m); | |
1469 | if (r < 0) | |
1470 | goto tr_abort; | |
1471 | } | |
1472 | ||
1473 | r = transaction_activate(tr, m, mode, e); | |
1474 | if (r < 0) | |
1475 | goto tr_abort; | |
e5b5ae50 | 1476 | |
f2341e0a | 1477 | log_unit_debug(unit, |
66870f90 ZJS |
1478 | "Enqueued job %s/%s as %u", unit->id, |
1479 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1480 | |
e5b5ae50 | 1481 | if (_ret) |
b94fbd30 | 1482 | *_ret = tr->anchor_job; |
60918275 | 1483 | |
7527cb52 | 1484 | transaction_free(tr); |
e5b5ae50 | 1485 | return 0; |
7527cb52 MS |
1486 | |
1487 | tr_abort: | |
1488 | transaction_abort(tr); | |
1489 | transaction_free(tr); | |
1490 | return r; | |
e5b5ae50 | 1491 | } |
60918275 | 1492 | |
53f18416 | 1493 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) { |
4440b27d | 1494 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1495 | int r; |
1496 | ||
1497 | assert(m); | |
1498 | assert(type < _JOB_TYPE_MAX); | |
1499 | assert(name); | |
1500 | assert(mode < _JOB_MODE_MAX); | |
1501 | ||
c3090674 LP |
1502 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1503 | if (r < 0) | |
28247076 | 1504 | return r; |
4440b27d | 1505 | assert(unit); |
28247076 | 1506 | |
53f18416 LP |
1507 | return manager_add_job(m, type, unit, mode, e, ret); |
1508 | } | |
1509 | ||
1510 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) { | |
4afd3348 | 1511 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1512 | int r; |
1513 | ||
1514 | assert(m); | |
1515 | assert(type < _JOB_TYPE_MAX); | |
1516 | assert(name); | |
1517 | assert(mode < _JOB_MODE_MAX); | |
1518 | ||
1519 | r = manager_add_job_by_name(m, type, name, mode, &error, ret); | |
1520 | if (r < 0) | |
1521 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1522 | ||
1523 | return r; | |
28247076 LP |
1524 | } |
1525 | ||
15d167f8 JW |
1526 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1527 | int r; | |
1528 | Transaction *tr; | |
1529 | ||
1530 | assert(m); | |
1531 | assert(unit); | |
1532 | assert(mode < _JOB_MODE_MAX); | |
1533 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1534 | ||
1535 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1536 | if (!tr) | |
1537 | return -ENOMEM; | |
1538 | ||
1539 | /* We need an anchor job */ | |
1540 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1541 | if (r < 0) | |
1542 | goto tr_abort; | |
1543 | ||
1544 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1545 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1546 | ||
1547 | r = transaction_activate(tr, m, mode, e); | |
1548 | if (r < 0) | |
1549 | goto tr_abort; | |
1550 | ||
1551 | transaction_free(tr); | |
1552 | return 0; | |
1553 | ||
1554 | tr_abort: | |
1555 | transaction_abort(tr); | |
1556 | transaction_free(tr); | |
1557 | return r; | |
1558 | } | |
1559 | ||
60918275 LP |
1560 | Job *manager_get_job(Manager *m, uint32_t id) { |
1561 | assert(m); | |
1562 | ||
1563 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1564 | } | |
1565 | ||
87f0e418 | 1566 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1567 | assert(m); |
1568 | assert(name); | |
1569 | ||
87f0e418 | 1570 | return hashmap_get(m->units, name); |
60918275 LP |
1571 | } |
1572 | ||
c1e1601e | 1573 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1574 | Unit *u; |
c1e1601e | 1575 | unsigned n = 0; |
60918275 LP |
1576 | |
1577 | assert(m); | |
1578 | ||
223dabab LP |
1579 | /* Make sure we are not run recursively */ |
1580 | if (m->dispatching_load_queue) | |
c1e1601e | 1581 | return 0; |
223dabab LP |
1582 | |
1583 | m->dispatching_load_queue = true; | |
1584 | ||
87f0e418 | 1585 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1586 | * tries to load its data until the queue is empty */ |
1587 | ||
595ed347 MS |
1588 | while ((u = m->load_queue)) { |
1589 | assert(u->in_load_queue); | |
034c6ed7 | 1590 | |
595ed347 | 1591 | unit_load(u); |
c1e1601e | 1592 | n++; |
60918275 LP |
1593 | } |
1594 | ||
223dabab | 1595 | m->dispatching_load_queue = false; |
c1e1601e | 1596 | return n; |
60918275 LP |
1597 | } |
1598 | ||
c2756a68 LP |
1599 | int manager_load_unit_prepare( |
1600 | Manager *m, | |
1601 | const char *name, | |
1602 | const char *path, | |
718db961 | 1603 | sd_bus_error *e, |
c2756a68 LP |
1604 | Unit **_ret) { |
1605 | ||
87f0e418 | 1606 | Unit *ret; |
7d17cfbc | 1607 | UnitType t; |
60918275 LP |
1608 | int r; |
1609 | ||
1610 | assert(m); | |
9e2f7c11 | 1611 | assert(name || path); |
7a6a095a | 1612 | assert(_ret); |
60918275 | 1613 | |
db06e3b6 LP |
1614 | /* This will prepare the unit for loading, but not actually |
1615 | * load anything from disk. */ | |
0301abf4 | 1616 | |
718db961 LP |
1617 | if (path && !is_path(path)) |
1618 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 LP |
1619 | |
1620 | if (!name) | |
2b6bf07d | 1621 | name = basename(path); |
9e2f7c11 | 1622 | |
7d17cfbc MS |
1623 | t = unit_name_to_type(name); |
1624 | ||
5d512d54 LN |
1625 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1626 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1627 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1628 | ||
718db961 | 1629 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1630 | } |
60918275 | 1631 | |
7d17cfbc MS |
1632 | ret = manager_get_unit(m, name); |
1633 | if (ret) { | |
034c6ed7 | 1634 | *_ret = ret; |
413d6313 | 1635 | return 1; |
034c6ed7 | 1636 | } |
60918275 | 1637 | |
7d17cfbc MS |
1638 | ret = unit_new(m, unit_vtable[t]->object_size); |
1639 | if (!ret) | |
60918275 LP |
1640 | return -ENOMEM; |
1641 | ||
7d17cfbc | 1642 | if (path) { |
ac155bb8 MS |
1643 | ret->fragment_path = strdup(path); |
1644 | if (!ret->fragment_path) { | |
0301abf4 LP |
1645 | unit_free(ret); |
1646 | return -ENOMEM; | |
1647 | } | |
7d17cfbc | 1648 | } |
0301abf4 | 1649 | |
1058cbf2 ZJS |
1650 | r = unit_add_name(ret, name); |
1651 | if (r < 0) { | |
87f0e418 | 1652 | unit_free(ret); |
1ffba6fe | 1653 | return r; |
60918275 LP |
1654 | } |
1655 | ||
87f0e418 | 1656 | unit_add_to_load_queue(ret); |
c1e1601e | 1657 | unit_add_to_dbus_queue(ret); |
949061f0 | 1658 | unit_add_to_gc_queue(ret); |
c1e1601e | 1659 | |
7a6a095a | 1660 | *_ret = ret; |
db06e3b6 LP |
1661 | |
1662 | return 0; | |
1663 | } | |
1664 | ||
c2756a68 LP |
1665 | int manager_load_unit( |
1666 | Manager *m, | |
1667 | const char *name, | |
1668 | const char *path, | |
718db961 | 1669 | sd_bus_error *e, |
c2756a68 LP |
1670 | Unit **_ret) { |
1671 | ||
db06e3b6 LP |
1672 | int r; |
1673 | ||
1674 | assert(m); | |
7a6a095a | 1675 | assert(_ret); |
db06e3b6 LP |
1676 | |
1677 | /* This will load the service information files, but not actually | |
1678 | * start any services or anything. */ | |
1679 | ||
c3090674 LP |
1680 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
1681 | if (r != 0) | |
db06e3b6 LP |
1682 | return r; |
1683 | ||
f50e0a01 | 1684 | manager_dispatch_load_queue(m); |
60918275 | 1685 | |
7a6a095a | 1686 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1687 | |
60918275 LP |
1688 | return 0; |
1689 | } | |
a66d02c3 | 1690 | |
cea8e32e | 1691 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1692 | Iterator i; |
a66d02c3 LP |
1693 | Job *j; |
1694 | ||
1695 | assert(s); | |
1696 | assert(f); | |
1697 | ||
034c6ed7 | 1698 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1699 | job_dump(j, f, prefix); |
a66d02c3 LP |
1700 | } |
1701 | ||
87f0e418 | 1702 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1703 | Iterator i; |
87f0e418 | 1704 | Unit *u; |
11dd41ce | 1705 | const char *t; |
a66d02c3 LP |
1706 | |
1707 | assert(s); | |
1708 | assert(f); | |
1709 | ||
87f0e418 | 1710 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 1711 | if (u->id == t) |
87f0e418 | 1712 | unit_dump(u, f, prefix); |
a66d02c3 | 1713 | } |
7fad411c | 1714 | |
ad75b9e7 LP |
1715 | void manager_dump(Manager *m, FILE *f, const char *prefix) { |
1716 | ManagerTimestamp q; | |
1717 | ||
1718 | assert(m); | |
1719 | assert(f); | |
1720 | ||
1721 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
1722 | char buf[FORMAT_TIMESTAMP_MAX]; | |
1723 | ||
1724 | if (dual_timestamp_is_set(m->timestamps + q)) | |
1725 | fprintf(f, "%sTimestamp %s: %s\n", | |
1726 | strempty(prefix), | |
1727 | manager_timestamp_to_string(q), | |
1728 | format_timestamp(buf, sizeof(buf), m->timestamps[q].realtime)); | |
1729 | } | |
1730 | ||
1731 | manager_dump_units(m, f, prefix); | |
1732 | manager_dump_jobs(m, f, prefix); | |
1733 | } | |
1734 | ||
713f6f90 LP |
1735 | int manager_get_dump_string(Manager *m, char **ret) { |
1736 | _cleanup_free_ char *dump = NULL; | |
1737 | _cleanup_fclose_ FILE *f = NULL; | |
1738 | size_t size; | |
1739 | int r; | |
1740 | ||
1741 | assert(m); | |
1742 | assert(ret); | |
1743 | ||
1744 | f = open_memstream(&dump, &size); | |
1745 | if (!f) | |
1746 | return -errno; | |
1747 | ||
1748 | __fsetlocking(f, FSETLOCKING_BYCALLER); | |
1749 | ||
1750 | manager_dump(m, f, NULL); | |
1751 | ||
1752 | r = fflush_and_check(f); | |
1753 | if (r < 0) | |
1754 | return r; | |
1755 | ||
1756 | f = safe_fclose(f); | |
1757 | ||
1758 | *ret = dump; | |
1759 | dump = NULL; | |
1760 | ||
1761 | return 0; | |
1762 | } | |
1763 | ||
7fad411c LP |
1764 | void manager_clear_jobs(Manager *m) { |
1765 | Job *j; | |
1766 | ||
1767 | assert(m); | |
1768 | ||
7fad411c | 1769 | while ((j = hashmap_first(m->jobs))) |
5273510e | 1770 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 1771 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 1772 | } |
83c60c9f | 1773 | |
752b5905 LP |
1774 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
1775 | Manager *m = userdata; | |
83c60c9f | 1776 | Job *j; |
034c6ed7 | 1777 | |
752b5905 LP |
1778 | assert(source); |
1779 | assert(m); | |
9152c765 | 1780 | |
034c6ed7 | 1781 | while ((j = m->run_queue)) { |
ac1135be | 1782 | assert(j->installed); |
034c6ed7 LP |
1783 | assert(j->in_run_queue); |
1784 | ||
1785 | job_run_and_invalidate(j); | |
9152c765 | 1786 | } |
034c6ed7 | 1787 | |
a0b64226 | 1788 | if (m->n_running_jobs > 0) |
03b717a3 MS |
1789 | manager_watch_jobs_in_progress(m); |
1790 | ||
31a7eb86 ZJS |
1791 | if (m->n_on_console > 0) |
1792 | manager_watch_idle_pipe(m); | |
1793 | ||
752b5905 | 1794 | return 1; |
c1e1601e LP |
1795 | } |
1796 | ||
9588bc32 | 1797 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
c1e1601e | 1798 | Job *j; |
595ed347 | 1799 | Unit *u; |
c1e1601e LP |
1800 | unsigned n = 0; |
1801 | ||
1802 | assert(m); | |
1803 | ||
1804 | if (m->dispatching_dbus_queue) | |
1805 | return 0; | |
1806 | ||
1807 | m->dispatching_dbus_queue = true; | |
1808 | ||
595ed347 MS |
1809 | while ((u = m->dbus_unit_queue)) { |
1810 | assert(u->in_dbus_queue); | |
c1e1601e | 1811 | |
595ed347 | 1812 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1813 | n++; |
1814 | } | |
1815 | ||
1816 | while ((j = m->dbus_job_queue)) { | |
1817 | assert(j->in_dbus_queue); | |
1818 | ||
1819 | bus_job_send_change_signal(j); | |
1820 | n++; | |
1821 | } | |
1822 | ||
1823 | m->dispatching_dbus_queue = false; | |
71445ae7 LP |
1824 | |
1825 | if (m->send_reloading_done) { | |
1826 | m->send_reloading_done = false; | |
1827 | ||
718db961 | 1828 | bus_manager_send_reloading(m, false); |
71445ae7 LP |
1829 | } |
1830 | ||
718db961 LP |
1831 | if (m->queued_message) |
1832 | bus_send_queued_message(m); | |
1833 | ||
c1e1601e | 1834 | return n; |
9152c765 LP |
1835 | } |
1836 | ||
d8fdc620 LP |
1837 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1838 | Manager *m = userdata; | |
1839 | char buf[PATH_MAX+1]; | |
1840 | ssize_t n; | |
1841 | ||
1842 | n = recv(fd, buf, sizeof(buf), 0); | |
1843 | if (n < 0) | |
1844 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
1845 | if (n == 0) { | |
1846 | log_error("Got zero-length cgroups agent message, ignoring."); | |
1847 | return 0; | |
1848 | } | |
1849 | if ((size_t) n >= sizeof(buf)) { | |
1850 | log_error("Got overly long cgroups agent message, ignoring."); | |
1851 | return 0; | |
1852 | } | |
1853 | ||
1854 | if (memchr(buf, 0, n)) { | |
1855 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
1856 | return 0; | |
1857 | } | |
1858 | buf[n] = 0; | |
1859 | ||
1860 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 1861 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
1862 | |
1863 | return 0; | |
1864 | } | |
1865 | ||
8523bf7d | 1866 | static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, FDSet *fds) { |
5ba6985b LP |
1867 | _cleanup_strv_free_ char **tags = NULL; |
1868 | ||
1869 | assert(m); | |
1870 | assert(u); | |
1871 | assert(buf); | |
5ba6985b LP |
1872 | |
1873 | tags = strv_split(buf, "\n\r"); | |
1874 | if (!tags) { | |
1875 | log_oom(); | |
1876 | return; | |
1877 | } | |
1878 | ||
5ba6985b | 1879 | if (UNIT_VTABLE(u)->notify_message) |
a354329f | 1880 | UNIT_VTABLE(u)->notify_message(u, pid, tags, fds); |
a86b7675 ZJS |
1881 | else if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
1882 | _cleanup_free_ char *x = NULL, *y = NULL; | |
1883 | ||
1884 | x = cescape(buf); | |
1885 | if (x) | |
1886 | y = ellipsize(x, 20, 90); | |
1887 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); | |
1888 | } | |
5ba6985b LP |
1889 | } |
1890 | ||
718db961 | 1891 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 1892 | |
b215b0ed | 1893 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 1894 | Manager *m = userdata; |
b215b0ed DH |
1895 | char buf[NOTIFY_BUFFER_MAX+1]; |
1896 | struct iovec iovec = { | |
1897 | .iov_base = buf, | |
1898 | .iov_len = sizeof(buf)-1, | |
1899 | }; | |
1900 | union { | |
1901 | struct cmsghdr cmsghdr; | |
1902 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1903 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1904 | } control = {}; | |
1905 | struct msghdr msghdr = { | |
1906 | .msg_iov = &iovec, | |
1907 | .msg_iovlen = 1, | |
1908 | .msg_control = &control, | |
1909 | .msg_controllen = sizeof(control), | |
1910 | }; | |
1911 | ||
1912 | struct cmsghdr *cmsg; | |
1913 | struct ucred *ucred = NULL; | |
b215b0ed DH |
1914 | Unit *u1, *u2, *u3; |
1915 | int r, *fd_array = NULL; | |
1916 | unsigned n_fds = 0; | |
8c47c732 LP |
1917 | ssize_t n; |
1918 | ||
1919 | assert(m); | |
718db961 LP |
1920 | assert(m->notify_fd == fd); |
1921 | ||
1922 | if (revents != EPOLLIN) { | |
1923 | log_warning("Got unexpected poll event for notify fd."); | |
1924 | return 0; | |
1925 | } | |
8c47c732 | 1926 | |
045a3d59 | 1927 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
b215b0ed | 1928 | if (n < 0) { |
c55ae51e LP |
1929 | if (IN_SET(errno, EAGAIN, EINTR)) |
1930 | return 0; /* Spurious wakeup, try again */ | |
8c47c732 | 1931 | |
c55ae51e LP |
1932 | /* If this is any other, real error, then let's stop processing this socket. This of course means we |
1933 | * won't take notification messages anymore, but that's still better than busy looping around this: | |
1934 | * being woken up over and over again but being unable to actually read the message off the socket. */ | |
1935 | return log_error_errno(errno, "Failed to receive notification message: %m"); | |
b215b0ed | 1936 | } |
a354329f | 1937 | |
b215b0ed DH |
1938 | CMSG_FOREACH(cmsg, &msghdr) { |
1939 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 1940 | |
b215b0ed DH |
1941 | fd_array = (int*) CMSG_DATA(cmsg); |
1942 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 1943 | |
b215b0ed DH |
1944 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
1945 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1946 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 1947 | |
b215b0ed | 1948 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 1949 | } |
b215b0ed | 1950 | } |
a354329f | 1951 | |
b215b0ed DH |
1952 | if (n_fds > 0) { |
1953 | assert(fd_array); | |
a354329f | 1954 | |
b215b0ed DH |
1955 | r = fdset_new_array(&fds, fd_array, n_fds); |
1956 | if (r < 0) { | |
1957 | close_many(fd_array, n_fds); | |
9987750e FB |
1958 | log_oom(); |
1959 | return 0; | |
a354329f | 1960 | } |
b215b0ed | 1961 | } |
8c47c732 | 1962 | |
b215b0ed DH |
1963 | if (!ucred || ucred->pid <= 0) { |
1964 | log_warning("Received notify message without valid credentials. Ignoring."); | |
1965 | return 0; | |
1966 | } | |
8c47c732 | 1967 | |
045a3d59 | 1968 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
1969 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
1970 | return 0; | |
1971 | } | |
8c47c732 | 1972 | |
875ca88d LP |
1973 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
1974 | * trailing NUL byte in the message, but don't expect it. */ | |
1975 | if (n > 1 && memchr(buf, 0, n-1)) { | |
1976 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
1977 | return 0; | |
1978 | } | |
1979 | ||
1980 | /* Make sure it's NUL-terminated. */ | |
b215b0ed | 1981 | buf[n] = 0; |
8c47c732 | 1982 | |
b215b0ed DH |
1983 | /* Notify every unit that might be interested, but try |
1984 | * to avoid notifying the same one multiple times. */ | |
1985 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); | |
c4bee3c4 | 1986 | if (u1) |
8523bf7d | 1987 | manager_invoke_notify_message(m, u1, ucred->pid, buf, fds); |
5ba6985b | 1988 | |
b215b0ed | 1989 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1990 | if (u2 && u2 != u1) |
8523bf7d | 1991 | manager_invoke_notify_message(m, u2, ucred->pid, buf, fds); |
5ba6985b | 1992 | |
b215b0ed | 1993 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1994 | if (u3 && u3 != u2 && u3 != u1) |
8523bf7d | 1995 | manager_invoke_notify_message(m, u3, ucred->pid, buf, fds); |
8c47c732 | 1996 | |
c4bee3c4 | 1997 | if (!u1 && !u2 && !u3) |
b215b0ed | 1998 | log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); |
a354329f | 1999 | |
b215b0ed | 2000 | if (fdset_size(fds) > 0) |
5fd2c135 | 2001 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2002 | |
2003 | return 0; | |
2004 | } | |
2005 | ||
96d66d89 | 2006 | static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) { |
36f20ae3 KW |
2007 | uint64_t iteration; |
2008 | ||
5ba6985b LP |
2009 | assert(m); |
2010 | assert(u); | |
2011 | assert(si); | |
2012 | ||
36f20ae3 KW |
2013 | sd_event_get_iteration(m->event, &iteration); |
2014 | ||
f2341e0a | 2015 | log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); |
5ba6985b LP |
2016 | |
2017 | unit_unwatch_pid(u, si->si_pid); | |
e57051f5 | 2018 | |
36f20ae3 | 2019 | if (UNIT_VTABLE(u)->sigchld_event) { |
ccc2c98e LN |
2020 | if (set_size(u->pids) <= 1 || |
2021 | iteration != u->sigchldgen || | |
2022 | unit_main_pid(u) == si->si_pid || | |
2023 | unit_control_pid(u) == si->si_pid) { | |
36f20ae3 KW |
2024 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); |
2025 | u->sigchldgen = iteration; | |
2026 | } else | |
1e706c8d | 2027 | log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids)); |
36f20ae3 | 2028 | } |
5ba6985b LP |
2029 | } |
2030 | ||
034c6ed7 | 2031 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
2032 | assert(m); |
2033 | ||
2034 | for (;;) { | |
b92bea5d | 2035 | siginfo_t si = {}; |
9152c765 | 2036 | |
4112df16 LP |
2037 | /* First we call waitd() for a PID and do not reap the |
2038 | * zombie. That way we can still access /proc/$PID for | |
2039 | * it while it is a zombie. */ | |
2040 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
2041 | |
2042 | if (errno == ECHILD) | |
2043 | break; | |
2044 | ||
4112df16 LP |
2045 | if (errno == EINTR) |
2046 | continue; | |
2047 | ||
9152c765 | 2048 | return -errno; |
acbb0225 | 2049 | } |
9152c765 | 2050 | |
4112df16 | 2051 | if (si.si_pid <= 0) |
9152c765 LP |
2052 | break; |
2053 | ||
3742095b | 2054 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { |
7fd1b19b | 2055 | _cleanup_free_ char *name = NULL; |
70af4d17 | 2056 | Unit *u1, *u2, *u3; |
4112df16 | 2057 | |
87d2c1ff | 2058 | get_process_comm(si.si_pid, &name); |
4112df16 | 2059 | |
5ba6985b LP |
2060 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", |
2061 | si.si_pid, strna(name), | |
2062 | sigchld_code_to_string(si.si_code), | |
2063 | si.si_status, | |
2064 | strna(si.si_code == CLD_EXITED | |
2065 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2066 | : signal_to_string(si.si_status))); | |
2067 | ||
2068 | /* And now figure out the unit this belongs | |
2069 | * to, it might be multiple... */ | |
b3ac818b | 2070 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
70af4d17 LP |
2071 | if (u1) |
2072 | invoke_sigchld_event(m, u1, &si); | |
fea72cc0 | 2073 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
2074 | if (u2 && u2 != u1) |
2075 | invoke_sigchld_event(m, u2, &si); | |
fea72cc0 | 2076 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
2077 | if (u3 && u3 != u2 && u3 != u1) |
2078 | invoke_sigchld_event(m, u3, &si); | |
5ba6985b | 2079 | } |
8c47c732 | 2080 | |
4112df16 LP |
2081 | /* And now, we actually reap the zombie. */ |
2082 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2083 | if (errno == EINTR) | |
2084 | continue; | |
2085 | ||
2086 | return -errno; | |
2087 | } | |
9152c765 LP |
2088 | } |
2089 | ||
2090 | return 0; | |
2091 | } | |
2092 | ||
c75fbada | 2093 | static void manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 2094 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 2095 | int r; |
398ef8ba | 2096 | |
f2341e0a | 2097 | log_debug("Activating special unit %s", name); |
1e001f52 | 2098 | |
4bd29fe5 | 2099 | r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL); |
bd0af849 | 2100 | if (r < 0) |
f2341e0a | 2101 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
28247076 LP |
2102 | } |
2103 | ||
24dd31c1 LN |
2104 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2105 | /* If the user presses C-A-D more than | |
2106 | * 7 times within 2s, we reboot/shutdown immediately, | |
2107 | * unless it was disabled in system.conf */ | |
2108 | ||
ae8c7939 | 2109 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 2110 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 LN |
2111 | else |
2112 | emergency_action(m, m->cad_burst_action, NULL, | |
2113 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); | |
24dd31c1 LN |
2114 | } |
2115 | ||
718db961 LP |
2116 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2117 | Manager *m = userdata; | |
9152c765 LP |
2118 | ssize_t n; |
2119 | struct signalfd_siginfo sfsi; | |
2120 | bool sigchld = false; | |
dacd6cee | 2121 | int r; |
9152c765 LP |
2122 | |
2123 | assert(m); | |
718db961 LP |
2124 | assert(m->signal_fd == fd); |
2125 | ||
2126 | if (revents != EPOLLIN) { | |
2127 | log_warning("Got unexpected events from signal file descriptor."); | |
2128 | return 0; | |
2129 | } | |
9152c765 LP |
2130 | |
2131 | for (;;) { | |
718db961 | 2132 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
57cb4adf | 2133 | if (n != sizeof(sfsi)) { |
8f4d6401 ZJS |
2134 | if (n >= 0) { |
2135 | log_warning("Truncated read from signal fd (%zu bytes)!", n); | |
2136 | return 0; | |
2137 | } | |
9152c765 | 2138 | |
8f4d6401 | 2139 | if (IN_SET(errno, EINTR, EAGAIN)) |
acbb0225 | 2140 | break; |
9152c765 | 2141 | |
8f4d6401 ZJS |
2142 | /* We return an error here, which will kill this handler, |
2143 | * to avoid a busy loop on read error. */ | |
2144 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
9152c765 LP |
2145 | } |
2146 | ||
4daf54a8 | 2147 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
463d0d15 | 2148 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) |
4daf54a8 ZJS |
2149 | ? LOG_DEBUG : LOG_INFO, |
2150 | &sfsi); | |
1e001f52 | 2151 | |
b9cd2ec1 LP |
2152 | switch (sfsi.ssi_signo) { |
2153 | ||
4112df16 | 2154 | case SIGCHLD: |
9152c765 | 2155 | sigchld = true; |
b9cd2ec1 LP |
2156 | break; |
2157 | ||
6632c602 | 2158 | case SIGTERM: |
463d0d15 | 2159 | if (MANAGER_IS_SYSTEM(m)) { |
db06e3b6 LP |
2160 | /* This is for compatibility with the |
2161 | * original sysvinit */ | |
ae57dad3 LP |
2162 | r = verify_run_space_and_log("Refusing to reexecute"); |
2163 | if (r >= 0) | |
2164 | m->exit_code = MANAGER_REEXECUTE; | |
a1b256b0 LP |
2165 | break; |
2166 | } | |
84e9af1e | 2167 | |
4831981d | 2168 | _fallthrough_; |
e11dc4a2 | 2169 | case SIGINT: |
c75fbada | 2170 | if (MANAGER_IS_SYSTEM(m)) |
24dd31c1 | 2171 | manager_handle_ctrl_alt_del(m); |
c75fbada | 2172 | else |
d60cb656 AJ |
2173 | manager_start_target(m, SPECIAL_EXIT_TARGET, |
2174 | JOB_REPLACE_IRREVERSIBLY); | |
a1b256b0 | 2175 | break; |
84e9af1e | 2176 | |
28247076 | 2177 | case SIGWINCH: |
463d0d15 | 2178 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 2179 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2180 | |
28247076 LP |
2181 | /* This is a nop on non-init */ |
2182 | break; | |
84e9af1e | 2183 | |
28247076 | 2184 | case SIGPWR: |
463d0d15 | 2185 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 2186 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 2187 | |
28247076 | 2188 | /* This is a nop on non-init */ |
84e9af1e | 2189 | break; |
6632c602 | 2190 | |
1005d14f | 2191 | case SIGUSR1: { |
57ee42ce LP |
2192 | Unit *u; |
2193 | ||
2194 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2195 | ||
2196 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2197 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2198 | bus_init(m, true); |
57ee42ce LP |
2199 | } |
2200 | ||
2201 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2202 | log_info("Loading D-Bus service..."); | |
7d793605 | 2203 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2204 | } |
2205 | ||
2206 | break; | |
2207 | } | |
2208 | ||
2149e37c | 2209 | case SIGUSR2: { |
718db961 | 2210 | _cleanup_free_ char *dump = NULL; |
2149e37c | 2211 | |
713f6f90 | 2212 | r = manager_get_dump_string(m, &dump); |
dacd6cee | 2213 | if (r < 0) { |
713f6f90 | 2214 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); |
b2cdc666 DM |
2215 | break; |
2216 | } | |
2217 | ||
2149e37c | 2218 | log_dump(LOG_INFO, dump); |
1005d14f | 2219 | break; |
2149e37c | 2220 | } |
1005d14f | 2221 | |
a16e1123 | 2222 | case SIGHUP: |
ae57dad3 LP |
2223 | r = verify_run_space_and_log("Refusing to reload"); |
2224 | if (r >= 0) | |
2225 | m->exit_code = MANAGER_RELOAD; | |
a16e1123 LP |
2226 | break; |
2227 | ||
7d793605 | 2228 | default: { |
253ee27a | 2229 | |
0003d1ab | 2230 | /* Starting SIGRTMIN+0 */ |
d60cb656 AJ |
2231 | static const struct { |
2232 | const char *target; | |
2233 | JobMode mode; | |
2234 | } target_table[] = { | |
2235 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2236 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2237 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2238 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2239 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2240 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2241 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY } | |
0003d1ab LP |
2242 | }; |
2243 | ||
2244 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2245 | static const ManagerExitCode code_table[] = { | |
2246 | [0] = MANAGER_HALT, | |
2247 | [1] = MANAGER_POWEROFF, | |
2248 | [2] = MANAGER_REBOOT, | |
2249 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2250 | }; |
2251 | ||
2252 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 2253 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f | 2254 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
d60cb656 AJ |
2255 | manager_start_target(m, target_table[idx].target, |
2256 | target_table[idx].mode); | |
7d793605 LP |
2257 | break; |
2258 | } | |
2259 | ||
0003d1ab LP |
2260 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2261 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2262 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2263 | break; | |
2264 | } | |
2265 | ||
0658666b LP |
2266 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2267 | ||
2268 | case 20: | |
d450b6f2 | 2269 | manager_set_show_status(m, SHOW_STATUS_YES); |
0658666b LP |
2270 | break; |
2271 | ||
2272 | case 21: | |
d450b6f2 | 2273 | manager_set_show_status(m, SHOW_STATUS_NO); |
0658666b LP |
2274 | break; |
2275 | ||
253ee27a LP |
2276 | case 22: |
2277 | log_set_max_level(LOG_DEBUG); | |
4cee3a78 | 2278 | log_info("Setting log level to debug."); |
253ee27a LP |
2279 | break; |
2280 | ||
2281 | case 23: | |
2282 | log_set_max_level(LOG_INFO); | |
4cee3a78 | 2283 | log_info("Setting log level to info."); |
253ee27a LP |
2284 | break; |
2285 | ||
600b704e | 2286 | case 24: |
463d0d15 | 2287 | if (MANAGER_IS_USER(m)) { |
600b704e LP |
2288 | m->exit_code = MANAGER_EXIT; |
2289 | return 0; | |
2290 | } | |
2291 | ||
2292 | /* This is a nop on init */ | |
2293 | break; | |
2294 | ||
4cfa2c99 | 2295 | case 26: |
c1dc6153 | 2296 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ |
4cfa2c99 LP |
2297 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); |
2298 | log_notice("Setting log target to journal-or-kmsg."); | |
2299 | break; | |
2300 | ||
253ee27a LP |
2301 | case 27: |
2302 | log_set_target(LOG_TARGET_CONSOLE); | |
2303 | log_notice("Setting log target to console."); | |
2304 | break; | |
2305 | ||
2306 | case 28: | |
2307 | log_set_target(LOG_TARGET_KMSG); | |
2308 | log_notice("Setting log target to kmsg."); | |
2309 | break; | |
2310 | ||
0658666b | 2311 | default: |
4e240ab0 | 2312 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 2313 | } |
b9cd2ec1 | 2314 | } |
7d793605 | 2315 | } |
9152c765 LP |
2316 | } |
2317 | ||
2318 | if (sigchld) | |
7b77ed8c | 2319 | manager_dispatch_sigchld(m); |
034c6ed7 LP |
2320 | |
2321 | return 0; | |
2322 | } | |
2323 | ||
718db961 LP |
2324 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2325 | Manager *m = userdata; | |
2326 | Iterator i; | |
2327 | Unit *u; | |
034c6ed7 LP |
2328 | |
2329 | assert(m); | |
718db961 | 2330 | assert(m->time_change_fd == fd); |
034c6ed7 | 2331 | |
a80c1575 | 2332 | log_struct(LOG_DEBUG, |
2b044526 | 2333 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
e2cc6eca | 2334 | LOG_MESSAGE("Time has been changed"), |
718db961 | 2335 | NULL); |
034c6ed7 | 2336 | |
718db961 LP |
2337 | /* Restart the watch */ |
2338 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
03e334a1 | 2339 | m->time_change_fd = safe_close(m->time_change_fd); |
ef734fd6 | 2340 | |
718db961 | 2341 | manager_setup_time_change(m); |
4e434314 | 2342 | |
718db961 LP |
2343 | HASHMAP_FOREACH(u, m->units, i) |
2344 | if (UNIT_VTABLE(u)->time_change) | |
2345 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2346 | |
718db961 LP |
2347 | return 0; |
2348 | } | |
ea430986 | 2349 | |
718db961 LP |
2350 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2351 | Manager *m = userdata; | |
8742514c | 2352 | |
718db961 LP |
2353 | assert(m); |
2354 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2355 | |
718db961 | 2356 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2357 | |
718db961 | 2358 | manager_close_idle_pipe(m); |
03b717a3 | 2359 | |
718db961 LP |
2360 | return 0; |
2361 | } | |
31a7eb86 | 2362 | |
718db961 LP |
2363 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2364 | Manager *m = userdata; | |
fd08a840 ZJS |
2365 | int r; |
2366 | uint64_t next; | |
31a7eb86 | 2367 | |
718db961 | 2368 | assert(m); |
fd08a840 | 2369 | assert(source); |
9152c765 | 2370 | |
718db961 | 2371 | manager_print_jobs_in_progress(m); |
fd08a840 ZJS |
2372 | |
2373 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
2374 | r = sd_event_source_set_time(source, next); | |
2375 | if (r < 0) | |
2376 | return r; | |
2377 | ||
2378 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2379 | } |
2380 | ||
2381 | int manager_loop(Manager *m) { | |
2382 | int r; | |
9152c765 | 2383 | |
fac9f8df | 2384 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2385 | |
9152c765 | 2386 | assert(m); |
f755e3b7 | 2387 | m->exit_code = MANAGER_OK; |
9152c765 | 2388 | |
fe51822e | 2389 | /* Release the path cache */ |
97044145 | 2390 | m->unit_path_cache = set_free_free(m->unit_path_cache); |
fe51822e | 2391 | |
b0c918b9 LP |
2392 | manager_check_finished(m); |
2393 | ||
a4312405 | 2394 | /* There might still be some zombies hanging around from |
f3669545 | 2395 | * before we were exec()'ed. Let's reap them. */ |
e96d6be7 LP |
2396 | r = manager_dispatch_sigchld(m); |
2397 | if (r < 0) | |
a4312405 LP |
2398 | return r; |
2399 | ||
f755e3b7 | 2400 | while (m->exit_code == MANAGER_OK) { |
718db961 | 2401 | usec_t wait_usec; |
9152c765 | 2402 | |
463d0d15 | 2403 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) |
e96d6be7 LP |
2404 | watchdog_ping(); |
2405 | ||
ea430986 LP |
2406 | if (!ratelimit_test(&rl)) { |
2407 | /* Yay, something is going seriously wrong, pause a little */ | |
2408 | log_warning("Looping too fast. Throttling execution a little."); | |
2409 | sleep(1); | |
2410 | } | |
2411 | ||
37a8e683 | 2412 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2413 | continue; |
2414 | ||
c5a97ed1 LP |
2415 | if (manager_dispatch_gc_job_queue(m) > 0) |
2416 | continue; | |
2417 | ||
2418 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
2419 | continue; |
2420 | ||
cf1265e1 | 2421 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2422 | continue; |
034c6ed7 | 2423 | |
91a6073e | 2424 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
2425 | continue; |
2426 | ||
c1e1601e | 2427 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2428 | continue; |
ea430986 | 2429 | |
c757a65b | 2430 | /* Sleep for half the watchdog time */ |
463d0d15 | 2431 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { |
718db961 LP |
2432 | wait_usec = m->runtime_watchdog / 2; |
2433 | if (wait_usec <= 0) | |
2434 | wait_usec = 1; | |
c757a65b | 2435 | } else |
3a43da28 | 2436 | wait_usec = USEC_INFINITY; |
9152c765 | 2437 | |
718db961 | 2438 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2439 | if (r < 0) |
2440 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2441 | } |
957ca890 | 2442 | |
a16e1123 | 2443 | return m->exit_code; |
83c60c9f | 2444 | } |
ea430986 | 2445 | |
718db961 | 2446 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2447 | _cleanup_free_ char *n = NULL; |
4b58153d | 2448 | sd_id128_t invocation_id; |
ea430986 | 2449 | Unit *u; |
80fbf05e | 2450 | int r; |
ea430986 LP |
2451 | |
2452 | assert(m); | |
2453 | assert(s); | |
2454 | assert(_u); | |
2455 | ||
ede3a796 LP |
2456 | r = unit_name_from_dbus_path(s, &n); |
2457 | if (r < 0) | |
2458 | return r; | |
ea430986 | 2459 | |
4b58153d LP |
2460 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
2461 | * as invocation ID. */ | |
2462 | r = sd_id128_from_string(n, &invocation_id); | |
2463 | if (r >= 0) { | |
2464 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
2465 | if (u) { | |
2466 | *_u = u; | |
2467 | return 0; | |
2468 | } | |
2469 | ||
2470 | 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)); | |
2471 | } | |
2472 | ||
00c83b43 LP |
2473 | /* If this didn't work, we check if this is a unit name */ |
2474 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
2475 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is neither a valid invocation ID nor unit name.", n); | |
2476 | ||
80fbf05e | 2477 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
2478 | if (r < 0) |
2479 | return r; | |
ea430986 LP |
2480 | |
2481 | *_u = u; | |
ea430986 LP |
2482 | return 0; |
2483 | } | |
86fbf370 LP |
2484 | |
2485 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 2486 | const char *p; |
86fbf370 | 2487 | unsigned id; |
718db961 | 2488 | Job *j; |
86fbf370 LP |
2489 | int r; |
2490 | ||
2491 | assert(m); | |
2492 | assert(s); | |
2493 | assert(_j); | |
2494 | ||
718db961 LP |
2495 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
2496 | if (!p) | |
86fbf370 LP |
2497 | return -EINVAL; |
2498 | ||
718db961 | 2499 | r = safe_atou(p, &id); |
8742514c | 2500 | if (r < 0) |
86fbf370 LP |
2501 | return r; |
2502 | ||
8742514c LP |
2503 | j = manager_get_job(m, id); |
2504 | if (!j) | |
86fbf370 LP |
2505 | return -ENOENT; |
2506 | ||
2507 | *_j = j; | |
2508 | ||
2509 | return 0; | |
2510 | } | |
dfcd764e | 2511 | |
4927fcae | 2512 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2513 | |
349cc4a5 | 2514 | #if HAVE_AUDIT |
2ba11090 | 2515 | _cleanup_free_ char *p = NULL; |
0aa281df | 2516 | const char *msg; |
7410616c | 2517 | int audit_fd, r; |
e537352b | 2518 | |
463d0d15 | 2519 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
2520 | return; |
2521 | ||
c1165f82 LP |
2522 | audit_fd = get_audit_fd(); |
2523 | if (audit_fd < 0) | |
e537352b LP |
2524 | return; |
2525 | ||
bbd3a7ba LP |
2526 | /* Don't generate audit events if the service was already |
2527 | * started and we're just deserializing */ | |
2c289ea8 | 2528 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
2529 | return; |
2530 | ||
ac155bb8 | 2531 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
2532 | return; |
2533 | ||
7410616c LP |
2534 | r = unit_name_to_prefix_and_instance(u->id, &p); |
2535 | if (r < 0) { | |
2536 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
2537 | return; |
2538 | } | |
2539 | ||
63c372cb | 2540 | msg = strjoina("unit=", p); |
0aa281df LP |
2541 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
2542 | if (errno == EPERM) | |
391ade86 | 2543 | /* We aren't allowed to send audit messages? |
44785992 | 2544 | * Then let's not retry again. */ |
c1165f82 | 2545 | close_audit_fd(); |
0aa281df | 2546 | else |
56f64d95 | 2547 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 2548 | } |
4927fcae | 2549 | #endif |
e537352b | 2550 | |
e537352b LP |
2551 | } |
2552 | ||
e983b760 | 2553 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 2554 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
2555 | _cleanup_free_ char *message = NULL; |
2556 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 2557 | int n = 0; |
e983b760 LP |
2558 | |
2559 | /* Don't generate plymouth events if the service was already | |
2560 | * started and we're just deserializing */ | |
2c289ea8 | 2561 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
2562 | return; |
2563 | ||
463d0d15 | 2564 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
2565 | return; |
2566 | ||
75f86906 | 2567 | if (detect_container() > 0) |
3772995a LP |
2568 | return; |
2569 | ||
ec2ce0c5 | 2570 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
2571 | return; |
2572 | ||
2573 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2574 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
2575 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
2576 | if (fd < 0) { | |
56f64d95 | 2577 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
2578 | return; |
2579 | } | |
2580 | ||
fc2fffe7 | 2581 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
e983b760 | 2582 | |
2ba11090 | 2583 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) |
56f64d95 | 2584 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 2585 | return; |
e983b760 LP |
2586 | } |
2587 | ||
ac155bb8 | 2588 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 2589 | log_oom(); |
2ba11090 | 2590 | return; |
e983b760 LP |
2591 | } |
2592 | ||
2593 | errno = 0; | |
2ba11090 ZJS |
2594 | if (write(fd, message, n + 1) != n + 1) |
2595 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
56f64d95 | 2596 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
2597 | } |
2598 | ||
d8d5ab98 | 2599 | int manager_open_serialization(Manager *m, FILE **_f) { |
504afd7c | 2600 | int fd; |
a16e1123 LP |
2601 | FILE *f; |
2602 | ||
2603 | assert(_f); | |
2604 | ||
504afd7c ZJS |
2605 | fd = open_serialization_fd("systemd-state"); |
2606 | if (fd < 0) | |
2607 | return fd; | |
a16e1123 | 2608 | |
01e10de3 | 2609 | f = fdopen(fd, "w+"); |
d86f9d52 | 2610 | if (!f) { |
03e334a1 | 2611 | safe_close(fd); |
a16e1123 | 2612 | return -errno; |
d86f9d52 | 2613 | } |
a16e1123 LP |
2614 | |
2615 | *_f = f; | |
a16e1123 LP |
2616 | return 0; |
2617 | } | |
2618 | ||
b3680f49 | 2619 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { |
9f9f0342 LP |
2620 | ManagerTimestamp q; |
2621 | const char *t; | |
a16e1123 LP |
2622 | Iterator i; |
2623 | Unit *u; | |
a16e1123 LP |
2624 | int r; |
2625 | ||
2626 | assert(m); | |
2627 | assert(f); | |
2628 | assert(fds); | |
2629 | ||
313cefa1 | 2630 | m->n_reloading++; |
38c52d46 | 2631 | |
1fa2f38f | 2632 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); |
33c5fae9 LP |
2633 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
2634 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
0c2826c6 ZJS |
2635 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); |
2636 | fprintf(f, "ready-sent=%s\n", yes_no(m->ready_sent)); | |
01d67b43 | 2637 | |
9f9f0342 LP |
2638 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { |
2639 | /* The userspace and finish timestamps only apply to the host system, hence only serialize them there */ | |
2640 | if (in_initrd() && IN_SET(q, MANAGER_TIMESTAMP_USERSPACE, MANAGER_TIMESTAMP_FINISH)) | |
2641 | continue; | |
f38ed060 | 2642 | |
9f9f0342 LP |
2643 | t = manager_timestamp_to_string(q); |
2644 | { | |
2645 | char field[strlen(t) + strlen("-timestamp") + 1]; | |
2646 | strcpy(stpcpy(field, t), "-timestamp"); | |
2647 | dual_timestamp_serialize(f, field, m->timestamps + q); | |
2648 | } | |
f38ed060 | 2649 | } |
47a483a1 | 2650 | |
fe902fa4 ZJS |
2651 | if (!switching_root) |
2652 | (void) serialize_environment(f, m->environment); | |
4a9fd066 | 2653 | |
d86f9d52 LP |
2654 | if (m->notify_fd >= 0) { |
2655 | int copy; | |
2656 | ||
2657 | copy = fdset_put_dup(fds, m->notify_fd); | |
2658 | if (copy < 0) | |
2659 | return copy; | |
2660 | ||
2661 | fprintf(f, "notify-fd=%i\n", copy); | |
2662 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2663 | } | |
2664 | ||
d8fdc620 LP |
2665 | if (m->cgroups_agent_fd >= 0) { |
2666 | int copy; | |
2667 | ||
2668 | copy = fdset_put_dup(fds, m->cgroups_agent_fd); | |
2669 | if (copy < 0) | |
2670 | return copy; | |
2671 | ||
2672 | fprintf(f, "cgroups-agent-fd=%i\n", copy); | |
2673 | } | |
2674 | ||
00d9ef85 LP |
2675 | if (m->user_lookup_fds[0] >= 0) { |
2676 | int copy0, copy1; | |
2677 | ||
2678 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
2679 | if (copy0 < 0) | |
2680 | return copy0; | |
2681 | ||
2682 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
2683 | if (copy1 < 0) | |
2684 | return copy1; | |
2685 | ||
2686 | fprintf(f, "user-lookup=%i %i\n", copy0, copy1); | |
2687 | } | |
2688 | ||
05a98afd | 2689 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 2690 | |
29206d46 LP |
2691 | r = dynamic_user_serialize(m, f, fds); |
2692 | if (r < 0) | |
2693 | return r; | |
2694 | ||
00d9ef85 LP |
2695 | manager_serialize_uid_refs(m, f); |
2696 | manager_serialize_gid_refs(m, f); | |
2697 | ||
4b61c875 | 2698 | fputc_unlocked('\n', f); |
f2382a94 | 2699 | |
a16e1123 | 2700 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 2701 | if (u->id != t) |
a16e1123 LP |
2702 | continue; |
2703 | ||
a16e1123 | 2704 | /* Start marker */ |
4b61c875 LP |
2705 | fputs_unlocked(u->id, f); |
2706 | fputc_unlocked('\n', f); | |
a16e1123 | 2707 | |
6fa48533 LP |
2708 | r = unit_serialize(u, f, fds, !switching_root); |
2709 | if (r < 0) { | |
313cefa1 | 2710 | m->n_reloading--; |
a16e1123 | 2711 | return r; |
38c52d46 | 2712 | } |
a16e1123 LP |
2713 | } |
2714 | ||
a7556052 | 2715 | assert(m->n_reloading > 0); |
313cefa1 | 2716 | m->n_reloading--; |
38c52d46 | 2717 | |
a16e1123 LP |
2718 | if (ferror(f)) |
2719 | return -EIO; | |
2720 | ||
b23de6af LP |
2721 | r = bus_fdset_add_all(m, fds); |
2722 | if (r < 0) | |
2723 | return r; | |
2724 | ||
a16e1123 LP |
2725 | return 0; |
2726 | } | |
2727 | ||
2728 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2729 | int r = 0; | |
2730 | ||
2731 | assert(m); | |
2732 | assert(f); | |
2733 | ||
2734 | log_debug("Deserializing state..."); | |
2735 | ||
313cefa1 | 2736 | m->n_reloading++; |
82c64bf5 | 2737 | |
10f8e83c | 2738 | for (;;) { |
d233c99a ZJS |
2739 | char line[LINE_MAX]; |
2740 | const char *val, *l; | |
10f8e83c LP |
2741 | |
2742 | if (!fgets(line, sizeof(line), f)) { | |
2743 | if (feof(f)) | |
2744 | r = 0; | |
2745 | else | |
2746 | r = -errno; | |
2747 | ||
2748 | goto finish; | |
2749 | } | |
2750 | ||
2751 | char_array_0(line); | |
2752 | l = strstrip(line); | |
2753 | ||
2754 | if (l[0] == 0) | |
2755 | break; | |
2756 | ||
fb4650aa | 2757 | if ((val = startswith(l, "current-job-id="))) { |
01d67b43 LP |
2758 | uint32_t id; |
2759 | ||
fb4650aa | 2760 | if (safe_atou32(val, &id) < 0) |
62c460c6 | 2761 | log_notice("Failed to parse current job id value %s", val); |
01d67b43 LP |
2762 | else |
2763 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 2764 | |
fb4650aa | 2765 | } else if ((val = startswith(l, "n-installed-jobs="))) { |
33c5fae9 LP |
2766 | uint32_t n; |
2767 | ||
fb4650aa | 2768 | if (safe_atou32(val, &n) < 0) |
62c460c6 | 2769 | log_notice("Failed to parse installed jobs counter %s", val); |
33c5fae9 LP |
2770 | else |
2771 | m->n_installed_jobs += n; | |
718db961 | 2772 | |
fb4650aa | 2773 | } else if ((val = startswith(l, "n-failed-jobs="))) { |
33c5fae9 LP |
2774 | uint32_t n; |
2775 | ||
fb4650aa | 2776 | if (safe_atou32(val, &n) < 0) |
62c460c6 | 2777 | log_notice("Failed to parse failed jobs counter %s", val); |
33c5fae9 LP |
2778 | else |
2779 | m->n_failed_jobs += n; | |
718db961 | 2780 | |
fb4650aa | 2781 | } else if ((val = startswith(l, "taint-usr="))) { |
01d67b43 LP |
2782 | int b; |
2783 | ||
fb4650aa | 2784 | b = parse_boolean(val); |
e3dd987c | 2785 | if (b < 0) |
62c460c6 | 2786 | log_notice("Failed to parse taint /usr flag %s", val); |
01d67b43 LP |
2787 | else |
2788 | m->taint_usr = m->taint_usr || b; | |
718db961 | 2789 | |
0c2826c6 ZJS |
2790 | } else if ((val = startswith(l, "ready-sent="))) { |
2791 | int b; | |
2792 | ||
2793 | b = parse_boolean(val); | |
2794 | if (b < 0) | |
2795 | log_notice("Failed to parse ready-sent flag %s", val); | |
2796 | else | |
2797 | m->ready_sent = m->ready_sent || b; | |
2798 | ||
9f9f0342 | 2799 | } else if (startswith(l, "env=")) { |
fe902fa4 | 2800 | r = deserialize_environment(&m->environment, l); |
d233c99a ZJS |
2801 | if (r == -ENOMEM) |
2802 | goto finish; | |
527b7a42 | 2803 | if (r < 0) |
d233c99a | 2804 | log_notice_errno(r, "Failed to parse environment entry: \"%s\": %m", l); |
e3dd987c | 2805 | |
fb4650aa | 2806 | } else if ((val = startswith(l, "notify-fd="))) { |
d86f9d52 LP |
2807 | int fd; |
2808 | ||
fb4650aa | 2809 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
62c460c6 | 2810 | log_notice("Failed to parse notify fd: \"%s\"", val); |
d86f9d52 | 2811 | else { |
03e334a1 LP |
2812 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
2813 | safe_close(m->notify_fd); | |
d86f9d52 LP |
2814 | m->notify_fd = fdset_remove(fds, fd); |
2815 | } | |
2816 | ||
fb4650aa | 2817 | } else if ((val = startswith(l, "notify-socket="))) { |
d86f9d52 LP |
2818 | char *n; |
2819 | ||
fb4650aa | 2820 | n = strdup(val); |
d86f9d52 LP |
2821 | if (!n) { |
2822 | r = -ENOMEM; | |
2823 | goto finish; | |
2824 | } | |
2825 | ||
2826 | free(m->notify_socket); | |
2827 | m->notify_socket = n; | |
2828 | ||
fb4650aa | 2829 | } else if ((val = startswith(l, "cgroups-agent-fd="))) { |
d8fdc620 LP |
2830 | int fd; |
2831 | ||
fb4650aa | 2832 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
62c460c6 | 2833 | log_notice("Failed to parse cgroups agent fd: %s", val); |
d8fdc620 LP |
2834 | else { |
2835 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
2836 | safe_close(m->cgroups_agent_fd); | |
2837 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
2838 | } | |
2839 | ||
fb4650aa | 2840 | } else if ((val = startswith(l, "user-lookup="))) { |
00d9ef85 LP |
2841 | int fd0, fd1; |
2842 | ||
fb4650aa | 2843 | if (sscanf(val, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) |
62c460c6 | 2844 | log_notice("Failed to parse user lookup fd: %s", val); |
00d9ef85 LP |
2845 | else { |
2846 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
2847 | safe_close_pair(m->user_lookup_fds); | |
2848 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
2849 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
2850 | } | |
2851 | ||
fb4650aa ZJS |
2852 | } else if ((val = startswith(l, "dynamic-user="))) |
2853 | dynamic_user_deserialize_one(m, val, fds); | |
2854 | else if ((val = startswith(l, "destroy-ipc-uid="))) | |
2855 | manager_deserialize_uid_refs_one(m, val); | |
2856 | else if ((val = startswith(l, "destroy-ipc-gid="))) | |
2857 | manager_deserialize_gid_refs_one(m, val); | |
2858 | else if ((val = startswith(l, "subscribed="))) { | |
05a98afd | 2859 | |
fb4650aa | 2860 | if (strv_extend(&m->deserialized_subscribed, val) < 0) |
05a98afd | 2861 | log_oom(); |
9f9f0342 LP |
2862 | } else { |
2863 | ManagerTimestamp q; | |
2864 | ||
2865 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
2866 | val = startswith(l, manager_timestamp_to_string(q)); | |
2867 | if (!val) | |
2868 | continue; | |
05a98afd | 2869 | |
9f9f0342 LP |
2870 | val = startswith(val, "-timestamp="); |
2871 | if (val) | |
2872 | break; | |
2873 | } | |
05a98afd | 2874 | |
9f9f0342 LP |
2875 | if (q < _MANAGER_TIMESTAMP_MAX) /* found it */ |
2876 | dual_timestamp_deserialize(val, m->timestamps + q); | |
2877 | else if (!startswith(l, "kdbus-fd=")) /* ignore kdbus */ | |
2878 | log_notice("Unknown serialization item '%s'", l); | |
2879 | } | |
10f8e83c LP |
2880 | } |
2881 | ||
a16e1123 LP |
2882 | for (;;) { |
2883 | Unit *u; | |
2884 | char name[UNIT_NAME_MAX+2]; | |
07429866 | 2885 | const char* unit_name; |
a16e1123 LP |
2886 | |
2887 | /* Start marker */ | |
2888 | if (!fgets(name, sizeof(name), f)) { | |
2889 | if (feof(f)) | |
10f8e83c LP |
2890 | r = 0; |
2891 | else | |
2892 | r = -errno; | |
a16e1123 | 2893 | |
82c64bf5 | 2894 | goto finish; |
a16e1123 LP |
2895 | } |
2896 | ||
2897 | char_array_0(name); | |
07429866 | 2898 | unit_name = strstrip(name); |
a16e1123 | 2899 | |
07429866 ZJS |
2900 | r = manager_load_unit(m, unit_name, NULL, NULL, &u); |
2901 | if (r < 0) { | |
2902 | log_notice_errno(r, "Failed to load unit \"%s\", skipping deserialization: %m", unit_name); | |
2903 | if (r == -ENOMEM) | |
2904 | goto finish; | |
2905 | unit_deserialize_skip(f); | |
2906 | continue; | |
2907 | } | |
a16e1123 | 2908 | |
01e10de3 | 2909 | r = unit_deserialize(u, f, fds); |
07429866 ZJS |
2910 | if (r < 0) { |
2911 | log_notice_errno(r, "Failed to deserialize unit \"%s\": %m", unit_name); | |
2912 | if (r == -ENOMEM) | |
2913 | goto finish; | |
2914 | } | |
a16e1123 LP |
2915 | } |
2916 | ||
10f8e83c | 2917 | finish: |
145b1f79 | 2918 | if (ferror(f)) |
82c64bf5 | 2919 | r = -EIO; |
a16e1123 | 2920 | |
a7556052 | 2921 | assert(m->n_reloading > 0); |
313cefa1 | 2922 | m->n_reloading--; |
82c64bf5 LP |
2923 | |
2924 | return r; | |
a16e1123 LP |
2925 | } |
2926 | ||
2927 | int manager_reload(Manager *m) { | |
2928 | int r, q; | |
51d122af ZJS |
2929 | _cleanup_fclose_ FILE *f = NULL; |
2930 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
a16e1123 LP |
2931 | |
2932 | assert(m); | |
2933 | ||
07719a21 LP |
2934 | r = manager_open_serialization(m, &f); |
2935 | if (r < 0) | |
a16e1123 LP |
2936 | return r; |
2937 | ||
313cefa1 | 2938 | m->n_reloading++; |
718db961 | 2939 | bus_manager_send_reloading(m, true); |
38c52d46 | 2940 | |
07719a21 LP |
2941 | fds = fdset_new(); |
2942 | if (!fds) { | |
313cefa1 | 2943 | m->n_reloading--; |
51d122af | 2944 | return -ENOMEM; |
a16e1123 LP |
2945 | } |
2946 | ||
b3680f49 | 2947 | r = manager_serialize(m, f, fds, false); |
07719a21 | 2948 | if (r < 0) { |
313cefa1 | 2949 | m->n_reloading--; |
51d122af | 2950 | return r; |
38c52d46 | 2951 | } |
a16e1123 LP |
2952 | |
2953 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
313cefa1 | 2954 | m->n_reloading--; |
51d122af | 2955 | return -errno; |
a16e1123 LP |
2956 | } |
2957 | ||
2958 | /* From here on there is no way back. */ | |
2959 | manager_clear_jobs_and_units(m); | |
07a78643 | 2960 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 2961 | lookup_paths_free(&m->lookup_paths); |
29206d46 | 2962 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
2963 | m->uid_refs = hashmap_free(m->uid_refs); |
2964 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 2965 | |
4943d143 | 2966 | q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
2967 | if (q < 0 && r >= 0) |
2968 | r = q; | |
5a1e9937 | 2969 | |
64691d20 ZJS |
2970 | q = manager_run_environment_generators(m); |
2971 | if (q < 0 && r >= 0) | |
2972 | r = q; | |
2973 | ||
a3c4eb07 LP |
2974 | /* Find new unit paths */ |
2975 | q = manager_run_generators(m); | |
e801700e | 2976 | if (q < 0 && r >= 0) |
07719a21 LP |
2977 | r = q; |
2978 | ||
a1453343 | 2979 | lookup_paths_reduce(&m->lookup_paths); |
5a1e9937 LP |
2980 | manager_build_unit_path_cache(m); |
2981 | ||
a16e1123 | 2982 | /* First, enumerate what we can from all config files */ |
ba64af90 | 2983 | manager_enumerate(m); |
a16e1123 LP |
2984 | |
2985 | /* Second, deserialize our stored data */ | |
07719a21 | 2986 | q = manager_deserialize(m, f, fds); |
07429866 ZJS |
2987 | if (q < 0) { |
2988 | log_error_errno(q, "Deserialization failed: %m"); | |
2989 | ||
2990 | if (r >= 0) | |
2991 | r = q; | |
2992 | } | |
a16e1123 LP |
2993 | |
2994 | fclose(f); | |
2995 | f = NULL; | |
2996 | ||
a2cc4a6c ZJS |
2997 | /* Re-register notify_fd as event source */ |
2998 | q = manager_setup_notify(m); | |
e801700e | 2999 | if (q < 0 && r >= 0) |
a2cc4a6c ZJS |
3000 | r = q; |
3001 | ||
d8fdc620 LP |
3002 | q = manager_setup_cgroups_agent(m); |
3003 | if (q < 0 && r >= 0) | |
3004 | r = q; | |
3005 | ||
00d9ef85 LP |
3006 | q = manager_setup_user_lookup_fd(m); |
3007 | if (q < 0 && r >= 0) | |
3008 | r = q; | |
3009 | ||
a16e1123 | 3010 | /* Third, fire things up! */ |
007c6337 | 3011 | manager_coldplug(m); |
a16e1123 | 3012 | |
29206d46 LP |
3013 | /* Release any dynamic users no longer referenced */ |
3014 | dynamic_user_vacuum(m, true); | |
3015 | ||
00d9ef85 LP |
3016 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
3017 | manager_vacuum_uid_refs(m); | |
3018 | manager_vacuum_gid_refs(m); | |
3019 | ||
8936a5e3 DM |
3020 | /* Sync current state of bus names with our set of listening units */ |
3021 | if (m->api_bus) | |
3022 | manager_sync_bus_names(m, m->api_bus); | |
3023 | ||
a7556052 LP |
3024 | assert(m->n_reloading > 0); |
3025 | m->n_reloading--; | |
9f611ad8 | 3026 | |
71445ae7 LP |
3027 | m->send_reloading_done = true; |
3028 | ||
a16e1123 LP |
3029 | return r; |
3030 | } | |
3031 | ||
fdf20a31 | 3032 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
3033 | Unit *u; |
3034 | Iterator i; | |
3035 | ||
3036 | assert(m); | |
3037 | ||
3038 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 3039 | unit_reset_failed(u); |
5632e374 LP |
3040 | } |
3041 | ||
31afa0a4 | 3042 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3043 | Unit *u; |
3044 | ||
3045 | assert(m); | |
3046 | assert(name); | |
3047 | ||
3048 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3049 | u = manager_get_unit(m, name); |
3050 | if (!u) | |
8f6df3fa LP |
3051 | return true; |
3052 | ||
31afa0a4 | 3053 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3054 | } |
3055 | ||
56dacdbc | 3056 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 3057 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 3058 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3059 | |
e0a3da1f | 3060 | if (m->test_run_flags) |
b0c918b9 LP |
3061 | return; |
3062 | ||
463d0d15 | 3063 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
e03ae661 | 3064 | |
9f9f0342 LP |
3065 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3066 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3067 | * negative values. */ |
3068 | ||
9f9f0342 LP |
3069 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3070 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3071 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3072 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3073 | |
9f9f0342 | 3074 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3075 | |
9f9f0342 LP |
3076 | /* The initrd case on bare-metal*/ |
3077 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3078 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3079 | |
e12919e8 | 3080 | log_struct(LOG_INFO, |
2b044526 | 3081 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3082 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3083 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3084 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
e2cc6eca LP |
3085 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3086 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
3087 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
3088 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
3089 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 3090 | NULL); |
18fa6b27 | 3091 | } else { |
9f9f0342 LP |
3092 | /* The initrd-less case on bare-metal*/ |
3093 | ||
3094 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3095 | initrd_usec = 0; |
3096 | ||
81270860 | 3097 | log_struct(LOG_INFO, |
2b044526 | 3098 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3099 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3100 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
3101 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.", |
3102 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
3103 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
3104 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
81270860 | 3105 | NULL); |
e12919e8 LP |
3106 | } |
3107 | } else { | |
9f9f0342 | 3108 | /* The container case */ |
e12919e8 | 3109 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3110 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3111 | |
3112 | log_struct(LOG_INFO, | |
2b044526 | 3113 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3114 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
3115 | LOG_MESSAGE("Startup finished in %s.", |
3116 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 3117 | NULL); |
18fa6b27 | 3118 | } |
b0c918b9 | 3119 | |
718db961 | 3120 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
3121 | |
3122 | sd_notifyf(false, | |
0c2826c6 ZJS |
3123 | m->ready_sent ? "STATUS=Startup finished in %s." |
3124 | : "READY=1\n" | |
3125 | "STATUS=Startup finished in %s.", | |
2fa4092c | 3126 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
0c2826c6 | 3127 | m->ready_sent = true; |
b0c918b9 LP |
3128 | } |
3129 | ||
56dacdbc | 3130 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3131 | assert(m); |
3132 | ||
2c289ea8 | 3133 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3134 | return; |
3135 | ||
9771b62d LP |
3136 | /* Verify that we are actually running currently. Initially |
3137 | * the exit code is set to invalid, and during operation it is | |
3138 | * then set to MANAGER_OK */ | |
3139 | if (m->exit_code != MANAGER_OK) | |
3140 | return; | |
3141 | ||
0c2826c6 ZJS |
3142 | /* For user managers, send out READY=1 as soon as we reach basic.target */ |
3143 | if (MANAGER_IS_USER(m) && !m->ready_sent) { | |
3144 | Unit *u; | |
3145 | ||
3146 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3147 | if (u && !u->job) { | |
3148 | sd_notifyf(false, | |
3149 | "READY=1\n" | |
3150 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
3151 | m->ready_sent = true; | |
3152 | } | |
3153 | } | |
3154 | ||
56dacdbc | 3155 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3156 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3157 | /* Ignore any failure, this is only for feedback */ |
e7ab4d1a | 3158 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); |
56dacdbc ZJS |
3159 | |
3160 | return; | |
3161 | } | |
3162 | ||
3163 | manager_flip_auto_status(m, false); | |
3164 | ||
3165 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
3166 | manager_close_idle_pipe(m); |
3167 | ||
3168 | /* Turn off confirm spawn now */ | |
7d5ceb64 | 3169 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
3170 | |
3171 | /* No need to update ask password status when we're going non-interactive */ | |
3172 | manager_close_ask_password(m); | |
3173 | ||
3174 | /* This is no longer the first boot */ | |
3175 | manager_set_first_boot(m, false); | |
3176 | ||
49d5666c | 3177 | if (MANAGER_IS_FINISHED(m)) |
56dacdbc ZJS |
3178 | return; |
3179 | ||
9f9f0342 | 3180 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
3181 | |
3182 | manager_notify_finished(m); | |
3183 | ||
e7ab4d1a | 3184 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3185 | } |
3186 | ||
64691d20 ZJS |
3187 | static bool generator_path_any(const char* const* paths) { |
3188 | char **path; | |
3189 | bool found = false; | |
3190 | ||
3191 | /* Optimize by skipping the whole process by not creating output directories | |
3192 | * if no generators are found. */ | |
3193 | STRV_FOREACH(path, (char**) paths) | |
3194 | if (access(*path, F_OK) == 0) | |
3195 | found = true; | |
3196 | else if (errno != ENOENT) | |
3197 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
3198 | ||
3199 | return found; | |
3200 | } | |
3201 | ||
3202 | static const char* system_env_generator_binary_paths[] = { | |
3203 | "/run/systemd/system-environment-generators", | |
3204 | "/etc/systemd/system-environment-generators", | |
3205 | "/usr/local/lib/systemd/system-environment-generators", | |
3206 | SYSTEM_ENV_GENERATOR_PATH, | |
3207 | NULL | |
3208 | }; | |
3209 | ||
3210 | static const char* user_env_generator_binary_paths[] = { | |
3211 | "/run/systemd/user-environment-generators", | |
3212 | "/etc/systemd/user-environment-generators", | |
3213 | "/usr/local/lib/systemd/user-environment-generators", | |
3214 | USER_ENV_GENERATOR_PATH, | |
3215 | NULL | |
3216 | }; | |
3217 | ||
3218 | static int manager_run_environment_generators(Manager *m) { | |
3219 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
3220 | const char **paths; | |
3221 | void* args[] = {&tmp, &tmp, &m->environment}; | |
3222 | ||
e0a3da1f ZJS |
3223 | if (m->test_run_flags && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
3224 | return 0; | |
3225 | ||
64691d20 ZJS |
3226 | paths = MANAGER_IS_SYSTEM(m) ? system_env_generator_binary_paths : user_env_generator_binary_paths; |
3227 | ||
3228 | if (!generator_path_any(paths)) | |
3229 | return 0; | |
3230 | ||
3231 | return execute_directories(paths, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL); | |
3232 | } | |
3233 | ||
e801700e | 3234 | static int manager_run_generators(Manager *m) { |
f42348ac | 3235 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 3236 | const char *argv[5]; |
07719a21 | 3237 | int r; |
5a1e9937 LP |
3238 | |
3239 | assert(m); | |
3240 | ||
e0a3da1f ZJS |
3241 | if (m->test_run_flags && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
3242 | return 0; | |
3243 | ||
9183df70 | 3244 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3245 | if (!paths) |
3246 | return log_oom(); | |
5a1e9937 | 3247 | |
64691d20 ZJS |
3248 | if (!generator_path_any((const char* const*) paths)) |
3249 | return 0; | |
5a1e9937 | 3250 | |
cd64fd56 | 3251 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
07719a21 LP |
3252 | if (r < 0) |
3253 | goto finish; | |
5a1e9937 | 3254 | |
83cc030f | 3255 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3256 | argv[1] = m->lookup_paths.generator; |
3257 | argv[2] = m->lookup_paths.generator_early; | |
3258 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3259 | argv[4] = NULL; |
5a1e9937 | 3260 | |
718db961 | 3261 | RUN_WITH_UMASK(0022) |
c6e47247 ZJS |
3262 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, |
3263 | NULL, NULL, (char**) argv); | |
5a1e9937 | 3264 | |
718db961 | 3265 | finish: |
cd64fd56 | 3266 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3267 | return r; |
5a1e9937 LP |
3268 | } |
3269 | ||
718db961 LP |
3270 | int manager_environment_add(Manager *m, char **minus, char **plus) { |
3271 | char **a = NULL, **b = NULL, **l; | |
97d0e5f8 | 3272 | assert(m); |
bcd8e6d1 | 3273 | |
718db961 | 3274 | l = m->environment; |
bcd8e6d1 | 3275 | |
718db961 LP |
3276 | if (!strv_isempty(minus)) { |
3277 | a = strv_env_delete(l, 1, minus); | |
3278 | if (!a) | |
3279 | return -ENOMEM; | |
3280 | ||
3281 | l = a; | |
3282 | } | |
3283 | ||
3284 | if (!strv_isempty(plus)) { | |
3285 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
3286 | if (!b) { |
3287 | strv_free(a); | |
718db961 | 3288 | return -ENOMEM; |
aa9f8a30 | 3289 | } |
bcd8e6d1 | 3290 | |
718db961 LP |
3291 | l = b; |
3292 | } | |
3293 | ||
3294 | if (m->environment != l) | |
3295 | strv_free(m->environment); | |
3296 | if (a != l) | |
3297 | strv_free(a); | |
3298 | if (b != l) | |
3299 | strv_free(b); | |
3300 | ||
f069efb4 LP |
3301 | m->environment = l; |
3302 | manager_clean_environment(m); | |
3303 | strv_sort(m->environment); | |
3304 | ||
97d0e5f8 UTL |
3305 | return 0; |
3306 | } | |
3307 | ||
c93ff2e9 FC |
3308 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
3309 | int i; | |
3310 | ||
3311 | assert(m); | |
3312 | ||
517d56b1 | 3313 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3314 | m->rlimit[i] = mfree(m->rlimit[i]); |
3315 | ||
07719a21 LP |
3316 | if (!default_rlimit[i]) |
3317 | continue; | |
c93ff2e9 | 3318 | |
07719a21 LP |
3319 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3320 | if (!m->rlimit[i]) | |
3ce40911 | 3321 | return log_oom(); |
c93ff2e9 FC |
3322 | } |
3323 | ||
3324 | return 0; | |
3325 | } | |
3326 | ||
4cfa2c99 | 3327 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
3328 | Unit *u; |
3329 | ||
3330 | assert(m); | |
3331 | ||
463d0d15 | 3332 | if (!MANAGER_IS_SYSTEM(m)) |
f1dd0c3f LP |
3333 | return; |
3334 | ||
731a676c LP |
3335 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
3336 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 3337 | log_close_journal(); |
731a676c | 3338 | return; |
f1dd0c3f LP |
3339 | } |
3340 | ||
731a676c LP |
3341 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
3342 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 3343 | log_close_journal(); |
731a676c LP |
3344 | return; |
3345 | } | |
f1dd0c3f | 3346 | |
731a676c LP |
3347 | /* Hmm, OK, so the socket is fully up and the service is up |
3348 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
3349 | log_open(); |
3350 | } | |
3351 | ||
d450b6f2 | 3352 | void manager_set_show_status(Manager *m, ShowStatus mode) { |
27d340c7 | 3353 | assert(m); |
d450b6f2 | 3354 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); |
27d340c7 | 3355 | |
463d0d15 | 3356 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3357 | return; |
3358 | ||
76b6f3f6 ZJS |
3359 | if (m->show_status != mode) |
3360 | log_debug("%s showing of status.", | |
3361 | mode == SHOW_STATUS_NO ? "Disabling" : "Enabling"); | |
d450b6f2 | 3362 | m->show_status = mode; |
27d340c7 | 3363 | |
d450b6f2 | 3364 | if (mode > 0) |
ac5b0c13 | 3365 | (void) touch("/run/systemd/show-status"); |
27d340c7 | 3366 | else |
ac5b0c13 | 3367 | (void) unlink("/run/systemd/show-status"); |
27d340c7 LP |
3368 | } |
3369 | ||
127d5fd1 | 3370 | static bool manager_get_show_status(Manager *m, StatusType type) { |
27d340c7 LP |
3371 | assert(m); |
3372 | ||
463d0d15 | 3373 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3374 | return false; |
3375 | ||
31a7eb86 ZJS |
3376 | if (m->no_console_output) |
3377 | return false; | |
3378 | ||
d81afec1 | 3379 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) |
08510627 LP |
3380 | return false; |
3381 | ||
e46b13c8 | 3382 | /* If we cannot find out the status properly, just proceed. */ |
ebc5788e | 3383 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) |
e46b13c8 ZJS |
3384 | return false; |
3385 | ||
d450b6f2 | 3386 | if (m->show_status > 0) |
27d340c7 LP |
3387 | return true; |
3388 | ||
031886ed | 3389 | return false; |
27d340c7 | 3390 | } |
68b29a9f | 3391 | |
7d5ceb64 FB |
3392 | const char *manager_get_confirm_spawn(Manager *m) { |
3393 | static int last_errno = 0; | |
3394 | const char *vc = m->confirm_spawn; | |
3395 | struct stat st; | |
3396 | int r; | |
3397 | ||
3398 | /* Here's the deal: we want to test the validity of the console but don't want | |
3399 | * PID1 to go through the whole console process which might block. But we also | |
3400 | * want to warn the user only once if something is wrong with the console so we | |
3401 | * cannot do the sanity checks after spawning our children. So here we simply do | |
3402 | * really basic tests to hopefully trap common errors. | |
3403 | * | |
3404 | * If the console suddenly disappear at the time our children will really it | |
3405 | * then they will simply fail to acquire it and a positive answer will be | |
3406 | * assumed. New children will fallback to /dev/console though. | |
3407 | * | |
3408 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
3409 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
3410 | * reason the configured console is not ready, we fallback to the default | |
3411 | * console. */ | |
3412 | ||
3413 | if (!vc || path_equal(vc, "/dev/console")) | |
3414 | return vc; | |
3415 | ||
3416 | r = stat(vc, &st); | |
3417 | if (r < 0) | |
3418 | goto fail; | |
3419 | ||
3420 | if (!S_ISCHR(st.st_mode)) { | |
3421 | errno = ENOTTY; | |
3422 | goto fail; | |
3423 | } | |
3424 | ||
3425 | last_errno = 0; | |
3426 | return vc; | |
3427 | fail: | |
3428 | if (last_errno != errno) { | |
3429 | last_errno = errno; | |
3430 | log_warning_errno(errno, "Failed to open %s: %m, using default console", vc); | |
3431 | } | |
3432 | return "/dev/console"; | |
3433 | } | |
3434 | ||
e2680723 LP |
3435 | void manager_set_first_boot(Manager *m, bool b) { |
3436 | assert(m); | |
3437 | ||
463d0d15 | 3438 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3439 | return; |
3440 | ||
ae2a2c53 LP |
3441 | if (m->first_boot != (int) b) { |
3442 | if (b) | |
3443 | (void) touch("/run/systemd/first-boot"); | |
3444 | else | |
3445 | (void) unlink("/run/systemd/first-boot"); | |
3446 | } | |
e2680723 | 3447 | |
ae2a2c53 | 3448 | m->first_boot = b; |
e2680723 LP |
3449 | } |
3450 | ||
b0eb2944 FB |
3451 | void manager_disable_confirm_spawn(void) { |
3452 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
3453 | } | |
3454 | ||
3455 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
3456 | if (!m->confirm_spawn) | |
3457 | return true; | |
3458 | ||
3459 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
3460 | } | |
3461 | ||
127d5fd1 | 3462 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
3463 | va_list ap; |
3464 | ||
cb6531be ZJS |
3465 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
3466 | ||
3467 | if (m && !manager_get_show_status(m, type)) | |
25cee550 MS |
3468 | return; |
3469 | ||
03b717a3 MS |
3470 | /* XXX We should totally drop the check for ephemeral here |
3471 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 3472 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
3473 | return; |
3474 | ||
25cee550 | 3475 | va_start(ap, format); |
127d5fd1 | 3476 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); |
25cee550 MS |
3477 | va_end(ap); |
3478 | } | |
3479 | ||
a57f7e2c LP |
3480 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
3481 | char p[strlen(path)+1]; | |
3482 | ||
3483 | assert(m); | |
3484 | assert(path); | |
3485 | ||
3486 | strcpy(p, path); | |
3487 | path_kill_slashes(p); | |
3488 | ||
3489 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3490 | } | |
e66cf1a3 | 3491 | |
19bbdd98 | 3492 | void manager_set_exec_params(Manager *m, ExecParameters *p) { |
f755e3b7 | 3493 | assert(m); |
3536f49e YW |
3494 | assert(p); |
3495 | ||
3496 | p->environment = m->environment; | |
3497 | p->confirm_spawn = manager_get_confirm_spawn(m); | |
3498 | p->cgroup_supported = m->cgroup_supported; | |
3499 | p->prefix = m->prefix; | |
e66cf1a3 | 3500 | |
8679efde | 3501 | SET_FLAG(p->flags, EXEC_PASS_LOG_UNIT|EXEC_CHOWN_DIRECTORIES, MANAGER_IS_SYSTEM(m)); |
e66cf1a3 | 3502 | } |
f755e3b7 | 3503 | |
5269eb6b | 3504 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 3505 | unsigned size; |
5269eb6b | 3506 | int r; |
03455c28 LDM |
3507 | |
3508 | assert(m); | |
3509 | assert(u->manager == m); | |
3510 | ||
3511 | size = set_size(m->failed_units); | |
3512 | ||
9fff8981 | 3513 | if (failed) { |
5269eb6b LP |
3514 | r = set_ensure_allocated(&m->failed_units, NULL); |
3515 | if (r < 0) | |
3516 | return log_oom(); | |
3517 | ||
9fff8981 | 3518 | if (set_put(m->failed_units, u) < 0) |
5269eb6b | 3519 | return log_oom(); |
9fff8981 | 3520 | } else |
5269eb6b | 3521 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
3522 | |
3523 | if (set_size(m->failed_units) != size) | |
3524 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
3525 | |
3526 | return 0; | |
03455c28 LDM |
3527 | } |
3528 | ||
f755e3b7 LP |
3529 | ManagerState manager_state(Manager *m) { |
3530 | Unit *u; | |
3531 | ||
3532 | assert(m); | |
3533 | ||
3534 | /* Did we ever finish booting? If not then we are still starting up */ | |
49d5666c | 3535 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
3536 | |
3537 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3538 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3539 | return MANAGER_INITIALIZING; | |
3540 | ||
f755e3b7 | 3541 | return MANAGER_STARTING; |
d81afec1 | 3542 | } |
f755e3b7 | 3543 | |
e68537f0 | 3544 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
f755e3b7 | 3545 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
706424c2 | 3546 | if (u && unit_active_or_pending(u)) |
f755e3b7 LP |
3547 | return MANAGER_STOPPING; |
3548 | ||
45a7b16b LP |
3549 | if (MANAGER_IS_SYSTEM(m)) { |
3550 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3551 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3552 | if (u && unit_active_or_pending(u)) | |
3553 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 3554 | |
45a7b16b LP |
3555 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
3556 | if (u && unit_active_or_pending(u)) | |
3557 | return MANAGER_MAINTENANCE; | |
3558 | } | |
f755e3b7 LP |
3559 | |
3560 | /* Are there any failed units? If so, we are in degraded mode */ | |
3561 | if (set_size(m->failed_units) > 0) | |
3562 | return MANAGER_DEGRADED; | |
3563 | ||
3564 | return MANAGER_RUNNING; | |
3565 | } | |
3566 | ||
00d9ef85 LP |
3567 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3568 | ||
3569 | static void manager_unref_uid_internal( | |
3570 | Manager *m, | |
3571 | Hashmap **uid_refs, | |
3572 | uid_t uid, | |
3573 | bool destroy_now, | |
3574 | int (*_clean_ipc)(uid_t uid)) { | |
3575 | ||
3576 | uint32_t c, n; | |
3577 | ||
3578 | assert(m); | |
3579 | assert(uid_refs); | |
3580 | assert(uid_is_valid(uid)); | |
3581 | assert(_clean_ipc); | |
3582 | ||
3583 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
3584 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
3585 | * | |
3586 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
3587 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
3588 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
3589 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
3590 | ||
3591 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3592 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3593 | ||
3594 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3595 | return; | |
3596 | ||
3597 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3598 | ||
3599 | n = c & ~DESTROY_IPC_FLAG; | |
3600 | assert(n > 0); | |
3601 | n--; | |
3602 | ||
3603 | if (destroy_now && n == 0) { | |
3604 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
3605 | ||
3606 | if (c & DESTROY_IPC_FLAG) { | |
3607 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
3608 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3609 | uid); | |
3610 | (void) _clean_ipc(uid); | |
3611 | } | |
3612 | } else { | |
3613 | c = n | (c & DESTROY_IPC_FLAG); | |
3614 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
3615 | } | |
3616 | } | |
3617 | ||
3618 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
3619 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
3620 | } | |
3621 | ||
3622 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
3623 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
3624 | } | |
3625 | ||
3626 | static int manager_ref_uid_internal( | |
3627 | Manager *m, | |
3628 | Hashmap **uid_refs, | |
3629 | uid_t uid, | |
3630 | bool clean_ipc) { | |
3631 | ||
3632 | uint32_t c, n; | |
3633 | int r; | |
3634 | ||
3635 | assert(m); | |
3636 | assert(uid_refs); | |
3637 | assert(uid_is_valid(uid)); | |
3638 | ||
3639 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
3640 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
3641 | ||
3642 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3643 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3644 | ||
3645 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3646 | return 0; | |
3647 | ||
3648 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3649 | if (r < 0) | |
3650 | return r; | |
3651 | ||
3652 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3653 | ||
3654 | n = c & ~DESTROY_IPC_FLAG; | |
3655 | n++; | |
3656 | ||
3657 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
3658 | return -EOVERFLOW; | |
3659 | ||
3660 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
3661 | ||
3662 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3663 | } | |
3664 | ||
3665 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
3666 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
3667 | } | |
3668 | ||
3669 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
3670 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
3671 | } | |
3672 | ||
3673 | static void manager_vacuum_uid_refs_internal( | |
3674 | Manager *m, | |
3675 | Hashmap **uid_refs, | |
3676 | int (*_clean_ipc)(uid_t uid)) { | |
3677 | ||
3678 | Iterator i; | |
3679 | void *p, *k; | |
3680 | ||
3681 | assert(m); | |
3682 | assert(uid_refs); | |
3683 | assert(_clean_ipc); | |
3684 | ||
3685 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3686 | uint32_t c, n; | |
3687 | uid_t uid; | |
3688 | ||
3689 | uid = PTR_TO_UID(k); | |
3690 | c = PTR_TO_UINT32(p); | |
3691 | ||
3692 | n = c & ~DESTROY_IPC_FLAG; | |
3693 | if (n > 0) | |
3694 | continue; | |
3695 | ||
3696 | if (c & DESTROY_IPC_FLAG) { | |
3697 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
3698 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3699 | uid); | |
3700 | (void) _clean_ipc(uid); | |
3701 | } | |
3702 | ||
3703 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
3704 | } | |
3705 | } | |
3706 | ||
3707 | void manager_vacuum_uid_refs(Manager *m) { | |
3708 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); | |
3709 | } | |
3710 | ||
3711 | void manager_vacuum_gid_refs(Manager *m) { | |
3712 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); | |
3713 | } | |
3714 | ||
3715 | static void manager_serialize_uid_refs_internal( | |
3716 | Manager *m, | |
3717 | FILE *f, | |
3718 | Hashmap **uid_refs, | |
3719 | const char *field_name) { | |
3720 | ||
3721 | Iterator i; | |
3722 | void *p, *k; | |
3723 | ||
3724 | assert(m); | |
3725 | assert(f); | |
3726 | assert(uid_refs); | |
3727 | assert(field_name); | |
3728 | ||
3729 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter | |
3730 | * of it is better rebuild after a reload/reexec. */ | |
3731 | ||
3732 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3733 | uint32_t c; | |
3734 | uid_t uid; | |
3735 | ||
3736 | uid = PTR_TO_UID(k); | |
3737 | c = PTR_TO_UINT32(p); | |
3738 | ||
3739 | if (!(c & DESTROY_IPC_FLAG)) | |
3740 | continue; | |
3741 | ||
3742 | fprintf(f, "%s=" UID_FMT "\n", field_name, uid); | |
3743 | } | |
3744 | } | |
3745 | ||
3746 | void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3747 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3748 | } | |
3749 | ||
3750 | void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3751 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3752 | } | |
3753 | ||
3754 | static void manager_deserialize_uid_refs_one_internal( | |
3755 | Manager *m, | |
3756 | Hashmap** uid_refs, | |
3757 | const char *value) { | |
3758 | ||
3759 | uid_t uid; | |
3760 | uint32_t c; | |
3761 | int r; | |
3762 | ||
3763 | assert(m); | |
3764 | assert(uid_refs); | |
3765 | assert(value); | |
3766 | ||
3767 | r = parse_uid(value, &uid); | |
3768 | if (r < 0 || uid == 0) { | |
3769 | log_debug("Unable to parse UID reference serialization"); | |
3770 | return; | |
3771 | } | |
3772 | ||
3773 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3774 | if (r < 0) { | |
3775 | log_oom(); | |
3776 | return; | |
3777 | } | |
3778 | ||
3779 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3780 | if (c & DESTROY_IPC_FLAG) | |
3781 | return; | |
3782 | ||
3783 | c |= DESTROY_IPC_FLAG; | |
3784 | ||
3785 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3786 | if (r < 0) { | |
3787 | log_debug("Failed to add UID reference entry"); | |
3788 | return; | |
3789 | } | |
3790 | } | |
3791 | ||
3792 | void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3793 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3794 | } | |
3795 | ||
3796 | void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3797 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3798 | } | |
3799 | ||
3800 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
3801 | struct buffer { | |
3802 | uid_t uid; | |
3803 | gid_t gid; | |
3804 | char unit_name[UNIT_NAME_MAX+1]; | |
3805 | } _packed_ buffer; | |
3806 | ||
3807 | Manager *m = userdata; | |
3808 | ssize_t l; | |
3809 | size_t n; | |
3810 | Unit *u; | |
3811 | ||
3812 | assert_se(source); | |
3813 | assert_se(m); | |
3814 | ||
3815 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
3816 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
3817 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
3818 | ||
3819 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
3820 | if (l < 0) { | |
4c701096 | 3821 | if (IN_SET(errno, EINTR, EAGAIN)) |
00d9ef85 LP |
3822 | return 0; |
3823 | ||
3824 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
3825 | } | |
3826 | ||
3827 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
3828 | log_warning("Received too short user lookup message, ignoring."); | |
3829 | return 0; | |
3830 | } | |
3831 | ||
3832 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
3833 | log_warning("Received too long user lookup message, ignoring."); | |
3834 | return 0; | |
3835 | } | |
3836 | ||
3837 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
3838 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
3839 | return 0; | |
3840 | } | |
3841 | ||
3842 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
3843 | if (memchr(buffer.unit_name, 0, n)) { | |
3844 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
3845 | return 0; | |
3846 | } | |
3847 | ||
3848 | buffer.unit_name[n] = 0; | |
3849 | u = manager_get_unit(m, buffer.unit_name); | |
3850 | if (!u) { | |
3851 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
3852 | return 0; | |
3853 | } | |
3854 | ||
3855 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
3856 | ||
3857 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
3858 | return 0; | |
3859 | } | |
3860 | ||
f755e3b7 | 3861 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 3862 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
3863 | [MANAGER_STARTING] = "starting", |
3864 | [MANAGER_RUNNING] = "running", | |
3865 | [MANAGER_DEGRADED] = "degraded", | |
3866 | [MANAGER_MAINTENANCE] = "maintenance", | |
3867 | [MANAGER_STOPPING] = "stopping", | |
3868 | }; | |
3869 | ||
3870 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
3871 | |
3872 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
3873 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", | |
3874 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
3875 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
3876 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
3877 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
3878 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
3879 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
3880 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
3881 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
3882 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
3883 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
3884 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
3885 | }; | |
3886 | ||
3887 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); |