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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
60918275 | 3 | #include <errno.h> |
400f1a33 LP |
4 | #include <fcntl.h> |
5 | #include <linux/kd.h> | |
e46b13c8 | 6 | #include <sys/epoll.h> |
400f1a33 | 7 | #include <sys/inotify.h> |
e1414003 | 8 | #include <sys/ioctl.h> |
400f1a33 | 9 | #include <sys/reboot.h> |
8742514c | 10 | #include <sys/timerfd.h> |
400f1a33 LP |
11 | #include <sys/wait.h> |
12 | #include <unistd.h> | |
830f6caa | 13 | |
349cc4a5 | 14 | #if HAVE_AUDIT |
4927fcae | 15 | #include <libaudit.h> |
830f6caa | 16 | #endif |
60918275 | 17 | |
718db961 | 18 | #include "sd-daemon.h" |
718db961 | 19 | #include "sd-messages.h" |
3536f49e | 20 | #include "sd-path.h" |
81527be1 | 21 | |
57b7a260 | 22 | #include "all-units.h" |
d68c645b | 23 | #include "alloc-util.h" |
400f1a33 LP |
24 | #include "audit-fd.h" |
25 | #include "boot-timestamps.h" | |
26 | #include "bus-common-errors.h" | |
27 | #include "bus-error.h" | |
28 | #include "bus-kernel.h" | |
29 | #include "bus-util.h" | |
00d9ef85 | 30 | #include "clean-ipc.h" |
af6b0ecc | 31 | #include "clock-util.h" |
19d22d43 | 32 | #include "core-varlink.h" |
786d19fd | 33 | #include "creds-util.h" |
400f1a33 LP |
34 | #include "dbus-job.h" |
35 | #include "dbus-manager.h" | |
36 | #include "dbus-unit.h" | |
37 | #include "dbus.h" | |
0e7f5ad9 | 38 | #include "def.h" |
d063a527 | 39 | #include "dirent-util.h" |
400f1a33 | 40 | #include "env-util.h" |
4f5dd394 | 41 | #include "escape.h" |
89711996 | 42 | #include "exec-util.h" |
d3070fbd | 43 | #include "execute.h" |
400f1a33 | 44 | #include "exit-status.h" |
3ffd4af2 | 45 | #include "fd-util.h" |
0d39fa9c | 46 | #include "fileio.h" |
385093b7 | 47 | #include "generator-setup.h" |
60918275 | 48 | #include "hashmap.h" |
9e5fd717 | 49 | #include "inotify-util.h" |
5cfa33e0 | 50 | #include "install.h" |
19d22d43 | 51 | #include "io-util.h" |
d3070fbd | 52 | #include "label.h" |
d904afc7 | 53 | #include "load-fragment.h" |
786d19fd | 54 | #include "locale-setup.h" |
16354eff | 55 | #include "log.h" |
400f1a33 | 56 | #include "macro.h" |
3ffd4af2 | 57 | #include "manager.h" |
2a341bb9 | 58 | #include "manager-dump.h" |
a01ba4b2 | 59 | #include "manager-serialize.h" |
0a970718 | 60 | #include "memory-util.h" |
35cd0ba5 | 61 | #include "mkdir-label.h" |
6bedfcbb | 62 | #include "parse-util.h" |
400f1a33 LP |
63 | #include "path-lookup.h" |
64 | #include "path-util.h" | |
65 | #include "process-util.h" | |
ea430986 | 66 | #include "ratelimit.h" |
31ce987c | 67 | #include "rlimit-util.h" |
c6878637 | 68 | #include "rm-rf.h" |
45ae2f72 | 69 | #include "selinux-util.h" |
400f1a33 | 70 | #include "signal-util.h" |
57b7a260 | 71 | #include "socket-util.h" |
514f4ef5 | 72 | #include "special.h" |
8fcde012 | 73 | #include "stat-util.h" |
8b43440b | 74 | #include "string-table.h" |
07630cea | 75 | #include "string-util.h" |
400f1a33 | 76 | #include "strv.h" |
dd1db3c2 | 77 | #include "strxcpyx.h" |
6123dfaa | 78 | #include "sysctl-util.h" |
a6ecbf83 | 79 | #include "syslog-util.h" |
400f1a33 LP |
80 | #include "terminal-util.h" |
81 | #include "time-util.h" | |
82 | #include "transaction.h" | |
affb60b1 | 83 | #include "umask-util.h" |
400f1a33 | 84 | #include "unit-name.h" |
00d9ef85 | 85 | #include "user-util.h" |
5dc4c17f | 86 | #include "virt.h" |
e96d6be7 | 87 | #include "watchdog.h" |
60918275 | 88 | |
a47806fa | 89 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 90 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 91 | |
03b717a3 | 92 | /* Initial delay and the interval for printing status messages about running jobs */ |
1b4154a8 ZJS |
93 | #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC) |
94 | #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC) | |
fd08a840 | 95 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) |
03b717a3 MS |
96 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
97 | ||
5238e957 | 98 | /* If there are more than 1K bus messages queue across our API and direct buses, then let's not add more on top until |
e0a08581 LP |
99 | * the queue gets more empty. */ |
100 | #define MANAGER_BUS_BUSY_THRESHOLD 1024LU | |
101 | ||
102 | /* How many units and jobs to process of the bus queue before returning to the event loop. */ | |
103 | #define MANAGER_BUS_MESSAGE_BUDGET 100U | |
104 | ||
718db961 | 105 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 106 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
107 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
108 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
109 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 110 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 111 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 112 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
575b300b | 113 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata); |
bbf5fd8e | 114 | static int manager_dispatch_timezone_change(sd_event_source *source, const struct inotify_event *event, void *userdata); |
64691d20 | 115 | static int manager_run_environment_generators(Manager *m); |
e801700e | 116 | static int manager_run_generators(Manager *m); |
06a4eb07 | 117 | static void manager_vacuum(Manager *m); |
718db961 | 118 | |
1b4154a8 | 119 | static usec_t manager_watch_jobs_next_time(Manager *m) { |
3889fc6f ZJS |
120 | usec_t timeout; |
121 | ||
122 | if (MANAGER_IS_USER(m)) | |
123 | /* Let the user manager without a timeout show status quickly, so the system manager can make | |
124 | * use of it, if it wants to. */ | |
125 | timeout = JOBS_IN_PROGRESS_WAIT_USEC * 2 / 3; | |
126 | else if (show_status_on(m->show_status)) | |
127 | /* When status is on, just use the usual timeout. */ | |
128 | timeout = JOBS_IN_PROGRESS_WAIT_USEC; | |
129 | else | |
130 | timeout = JOBS_IN_PROGRESS_QUIET_WAIT_USEC; | |
131 | ||
132 | return usec_add(now(CLOCK_MONOTONIC), timeout); | |
1b4154a8 ZJS |
133 | } |
134 | ||
2ae56591 | 135 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 136 | usec_t next; |
cfa9677b | 137 | int r; |
e5723c89 | 138 | |
718db961 | 139 | assert(m); |
03b717a3 | 140 | |
42bf1ae1 FB |
141 | /* We do not want to show the cylon animation if the user |
142 | * needs to confirm service executions otherwise confirmation | |
143 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 144 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
145 | return; |
146 | ||
718db961 | 147 | if (m->jobs_in_progress_event_source) |
2ae56591 | 148 | return; |
03b717a3 | 149 | |
1b4154a8 | 150 | next = manager_watch_jobs_next_time(m); |
cfa9677b | 151 | r = sd_event_add_time( |
6a0f1f6d LP |
152 | m->event, |
153 | &m->jobs_in_progress_event_source, | |
154 | CLOCK_MONOTONIC, | |
155 | next, 0, | |
156 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
157 | if (r < 0) |
158 | return; | |
7dfbe2e3 TG |
159 | |
160 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
161 | } |
162 | ||
fbd0b64f | 163 | #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL)) |
03b717a3 | 164 | |
03b717a3 MS |
165 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
166 | char *p = buffer; | |
167 | ||
168 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
169 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
170 | ||
171 | if (pos > 1) { | |
6282c859 MS |
172 | if (pos > 2) |
173 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
174 | if (log_get_show_color()) |
175 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
176 | *p++ = '*'; |
177 | } | |
178 | ||
179 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
180 | if (log_get_show_color()) |
181 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
182 | *p++ = '*'; |
183 | } | |
184 | ||
64c3610b FB |
185 | if (log_get_show_color()) |
186 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
187 | |
188 | if (pos < width) { | |
64c3610b FB |
189 | if (log_get_show_color()) |
190 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 191 | *p++ = '*'; |
6282c859 MS |
192 | if (pos < width-1) |
193 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
194 | if (log_get_show_color()) |
195 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 196 | } |
03b717a3 MS |
197 | } |
198 | ||
1addc46c | 199 | static void manager_flip_auto_status(Manager *m, bool enable, const char *reason) { |
f755e3b7 LP |
200 | assert(m); |
201 | ||
cb8ccb22 ZJS |
202 | if (enable) { |
203 | if (m->show_status == SHOW_STATUS_AUTO) | |
7365a296 | 204 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY, reason); |
cb8ccb22 ZJS |
205 | } else { |
206 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
7365a296 | 207 | manager_set_show_status(m, SHOW_STATUS_AUTO, reason); |
cb8ccb22 ZJS |
208 | } |
209 | } | |
210 | ||
03b717a3 | 211 | static void manager_print_jobs_in_progress(Manager *m) { |
03b717a3 | 212 | Job *j; |
03b717a3 MS |
213 | unsigned counter = 0, print_nr; |
214 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
215 | unsigned cylon_pos; | |
8bb310c3 | 216 | uint64_t x; |
03b717a3 | 217 | |
718db961 | 218 | assert(m); |
9c3349e2 | 219 | assert(m->n_running_jobs > 0); |
718db961 | 220 | |
7365a296 | 221 | manager_flip_auto_status(m, true, "delay"); |
d450b6f2 | 222 | |
03b717a3 MS |
223 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
224 | ||
90e74a66 | 225 | HASHMAP_FOREACH(j, m->jobs) |
03b717a3 MS |
226 | if (j->state == JOB_RUNNING && counter++ == print_nr) |
227 | break; | |
228 | ||
e970a72e MS |
229 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
230 | * so the above loop must have succeeded in finding j. */ | |
231 | assert(counter == print_nr + 1); | |
51d122af | 232 | assert(j); |
5a82a91a | 233 | |
03b717a3 MS |
234 | cylon_pos = m->jobs_in_progress_iteration % 14; |
235 | if (cylon_pos >= 8) | |
236 | cylon_pos = 14 - cylon_pos; | |
237 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
238 | ||
8bb310c3 ZJS |
239 | m->jobs_in_progress_iteration++; |
240 | ||
3889fc6f | 241 | char job_of_n[STRLEN("( of ) ") + DECIMAL_STR_MAX(unsigned)*2] = ""; |
5291f26d | 242 | if (m->n_running_jobs > 1) |
3889fc6f | 243 | xsprintf(job_of_n, "(%u of %u) ", counter, m->n_running_jobs); |
03b717a3 | 244 | |
5291f26d | 245 | bool have_timeout = job_get_timeout(j, &x) > 0; |
8bb310c3 | 246 | |
04d232d8 ZJS |
247 | /* We want to use enough information for the user to identify previous lines talking about the same |
248 | * unit, but keep the message as short as possible. So if 'Starting foo.service' or 'Starting | |
3889fc6f | 249 | * foo.service - Description' were used, 'foo.service' is enough here. On the other hand, if we used |
04d232d8 ZJS |
250 | * 'Starting Description' before, then we shall also use 'Description' here. So we pass NULL as the |
251 | * second argument to unit_status_string(). */ | |
252 | const char *ident = unit_status_string(j->unit, NULL); | |
253 | ||
3889fc6f ZJS |
254 | const char *time = FORMAT_TIMESPAN(now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
255 | const char *limit = have_timeout ? FORMAT_TIMESPAN(x - j->begin_usec, 1*USEC_PER_SEC) : "no limit"; | |
256 | ||
257 | if (m->status_unit_format == STATUS_UNIT_FORMAT_DESCRIPTION) | |
258 | /* When using 'Description', we effectively don't have enough space to show the nested status | |
259 | * without ellipsization, so let's not even try. */ | |
260 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
261 | "%sA %s job is running for %s (%s / %s)", | |
262 | job_of_n, | |
263 | job_type_to_string(j->type), | |
264 | ident, | |
265 | time, limit); | |
266 | else { | |
267 | const char *status_text = unit_status_text(j->unit); | |
268 | ||
269 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
270 | "%sJob %s/%s running (%s / %s)%s%s", | |
271 | job_of_n, | |
272 | ident, | |
273 | job_type_to_string(j->type), | |
274 | time, limit, | |
275 | status_text ? ": " : "", | |
276 | strempty(status_text)); | |
277 | } | |
278 | ||
279 | sd_notifyf(false, | |
280 | "STATUS=%sUser job %s/%s running (%s / %s)...", | |
281 | job_of_n, | |
282 | ident, | |
283 | job_type_to_string(j->type), | |
284 | time, limit); | |
285 | m->status_ready = false; | |
03b717a3 MS |
286 | } |
287 | ||
e46b13c8 | 288 | static int have_ask_password(void) { |
c2b2df60 | 289 | _cleanup_closedir_ DIR *dir = NULL; |
e46b13c8 ZJS |
290 | |
291 | dir = opendir("/run/systemd/ask-password"); | |
292 | if (!dir) { | |
293 | if (errno == ENOENT) | |
294 | return false; | |
295 | else | |
296 | return -errno; | |
297 | } | |
298 | ||
c7f0d9e5 | 299 | FOREACH_DIRENT_ALL(de, dir, return -errno) |
e46b13c8 ZJS |
300 | if (startswith(de->d_name, "ask.")) |
301 | return true; | |
8fb3f009 | 302 | return false; |
e46b13c8 ZJS |
303 | } |
304 | ||
305 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
306 | int fd, uint32_t revents, void *userdata) { | |
307 | Manager *m = userdata; | |
308 | ||
309 | assert(m); | |
310 | ||
665dfe93 | 311 | (void) flush_fd(fd); |
e46b13c8 ZJS |
312 | |
313 | m->have_ask_password = have_ask_password(); | |
314 | if (m->have_ask_password < 0) | |
315 | /* Log error but continue. Negative have_ask_password | |
316 | * is treated as unknown status. */ | |
c33b3297 | 317 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
318 | |
319 | return 0; | |
320 | } | |
321 | ||
322 | static void manager_close_ask_password(Manager *m) { | |
323 | assert(m); | |
324 | ||
5dcadb4c | 325 | m->ask_password_event_source = sd_event_source_disable_unref(m->ask_password_event_source); |
90990e28 | 326 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
327 | m->have_ask_password = -EINVAL; |
328 | } | |
329 | ||
330 | static int manager_check_ask_password(Manager *m) { | |
331 | int r; | |
332 | ||
333 | assert(m); | |
334 | ||
335 | if (!m->ask_password_event_source) { | |
336 | assert(m->ask_password_inotify_fd < 0); | |
337 | ||
17e4b070 | 338 | (void) mkdir_p_label("/run/systemd/ask-password", 0755); |
e46b13c8 ZJS |
339 | |
340 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 | 341 | if (m->ask_password_inotify_fd < 0) |
330b8fb3 | 342 | return log_error_errno(errno, "Failed to create inotify object: %m"); |
e46b13c8 | 343 | |
27c3112d FB |
344 | r = inotify_add_watch_and_warn(m->ask_password_inotify_fd, |
345 | "/run/systemd/ask-password", | |
346 | IN_CREATE|IN_DELETE|IN_MOVE); | |
347 | if (r < 0) { | |
e46b13c8 | 348 | manager_close_ask_password(m); |
27c3112d | 349 | return r; |
e46b13c8 ZJS |
350 | } |
351 | ||
352 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
353 | m->ask_password_inotify_fd, EPOLLIN, | |
354 | manager_dispatch_ask_password_fd, m); | |
355 | if (r < 0) { | |
df3d3bdf | 356 | log_error_errno(r, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 | 357 | manager_close_ask_password(m); |
df3d3bdf | 358 | return r; |
e46b13c8 ZJS |
359 | } |
360 | ||
7dfbe2e3 TG |
361 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
362 | ||
e46b13c8 ZJS |
363 | /* Queries might have been added meanwhile... */ |
364 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
365 | m->ask_password_inotify_fd, EPOLLIN, m); | |
366 | } | |
367 | ||
368 | return m->have_ask_password; | |
369 | } | |
370 | ||
31a7eb86 | 371 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
372 | int r; |
373 | ||
718db961 LP |
374 | assert(m); |
375 | ||
376 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
377 | return 0; |
378 | ||
379 | if (m->idle_pipe[2] < 0) | |
380 | return 0; | |
381 | ||
151b9b96 | 382 | 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 |
383 | if (r < 0) |
384 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 385 | |
7dfbe2e3 TG |
386 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
387 | ||
31a7eb86 | 388 | return 0; |
31a7eb86 ZJS |
389 | } |
390 | ||
718db961 LP |
391 | static void manager_close_idle_pipe(Manager *m) { |
392 | assert(m); | |
31a7eb86 | 393 | |
5dcadb4c | 394 | m->idle_pipe_event_source = sd_event_source_disable_unref(m->idle_pipe_event_source); |
cd72bd8a | 395 | |
3d94f76c LP |
396 | safe_close_pair(m->idle_pipe); |
397 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
398 | } |
399 | ||
8742514c | 400 | static int manager_setup_time_change(Manager *m) { |
718db961 | 401 | int r; |
b92bea5d | 402 | |
718db961 | 403 | assert(m); |
8742514c | 404 | |
638cece4 | 405 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
406 | return 0; |
407 | ||
5dcadb4c | 408 | m->time_change_event_source = sd_event_source_disable_unref(m->time_change_event_source); |
7feedd18 LP |
409 | m->time_change_fd = safe_close(m->time_change_fd); |
410 | ||
4f811d27 | 411 | m->time_change_fd = time_change_fd(); |
4a62c710 | 412 | if (m->time_change_fd < 0) |
4f811d27 | 413 | return log_error_errno(m->time_change_fd, "Failed to create timer change timer fd: %m"); |
8742514c | 414 | |
151b9b96 | 415 | 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 |
416 | if (r < 0) |
417 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 418 | |
a5cc7e5a LP |
419 | /* Schedule this slightly earlier than the .timer event sources */ |
420 | r = sd_event_source_set_priority(m->time_change_event_source, SD_EVENT_PRIORITY_NORMAL-1); | |
421 | if (r < 0) | |
422 | return log_error_errno(r, "Failed to set priority of time change event sources: %m"); | |
423 | ||
7dfbe2e3 TG |
424 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
425 | ||
8742514c LP |
426 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
bbf5fd8e LP |
431 | static int manager_read_timezone_stat(Manager *m) { |
432 | struct stat st; | |
433 | bool changed; | |
434 | ||
435 | assert(m); | |
436 | ||
437 | /* Read the current stat() data of /etc/localtime so that we detect changes */ | |
438 | if (lstat("/etc/localtime", &st) < 0) { | |
439 | log_debug_errno(errno, "Failed to stat /etc/localtime, ignoring: %m"); | |
440 | changed = m->etc_localtime_accessible; | |
441 | m->etc_localtime_accessible = false; | |
442 | } else { | |
443 | usec_t k; | |
444 | ||
445 | k = timespec_load(&st.st_mtim); | |
446 | changed = !m->etc_localtime_accessible || k != m->etc_localtime_mtime; | |
447 | ||
448 | m->etc_localtime_mtime = k; | |
449 | m->etc_localtime_accessible = true; | |
450 | } | |
451 | ||
452 | return changed; | |
453 | } | |
454 | ||
455 | static int manager_setup_timezone_change(Manager *m) { | |
a5cc7e5a | 456 | _cleanup_(sd_event_source_unrefp) sd_event_source *new_event = NULL; |
bbf5fd8e LP |
457 | int r; |
458 | ||
459 | assert(m); | |
460 | ||
638cece4 | 461 | if (MANAGER_IS_TEST_RUN(m)) |
bbf5fd8e LP |
462 | return 0; |
463 | ||
464 | /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even | |
465 | * though another link might be kept), renames, and file close operations after writing. Note we don't bother | |
466 | * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count | |
467 | * went to zero and all fds to it are closed. | |
468 | * | |
469 | * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases | |
470 | * correctly. | |
471 | * | |
472 | * Note that we create the new event source first here, before releasing the old one. This should optimize | |
473 | * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */ | |
474 | ||
475 | r = sd_event_add_inotify(m->event, &new_event, "/etc/localtime", | |
476 | IN_ATTRIB|IN_MOVE_SELF|IN_CLOSE_WRITE|IN_DONT_FOLLOW, manager_dispatch_timezone_change, m); | |
0cb21d8c LP |
477 | if (r == -ENOENT) { |
478 | /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by | |
479 | * O_CREATE or by rename() */ | |
480 | ||
481 | log_debug_errno(r, "/etc/localtime doesn't exist yet, watching /etc instead."); | |
bbf5fd8e LP |
482 | r = sd_event_add_inotify(m->event, &new_event, "/etc", |
483 | IN_CREATE|IN_MOVED_TO|IN_ONLYDIR, manager_dispatch_timezone_change, m); | |
0cb21d8c | 484 | } |
bbf5fd8e LP |
485 | if (r < 0) |
486 | return log_error_errno(r, "Failed to create timezone change event source: %m"); | |
487 | ||
a5cc7e5a LP |
488 | /* Schedule this slightly earlier than the .timer event sources */ |
489 | r = sd_event_source_set_priority(new_event, SD_EVENT_PRIORITY_NORMAL-1); | |
490 | if (r < 0) | |
491 | return log_error_errno(r, "Failed to set priority of timezone change event sources: %m"); | |
492 | ||
bbf5fd8e | 493 | sd_event_source_unref(m->timezone_change_event_source); |
a5cc7e5a | 494 | m->timezone_change_event_source = TAKE_PTR(new_event); |
bbf5fd8e LP |
495 | |
496 | return 0; | |
497 | } | |
498 | ||
80876c20 | 499 | static int enable_special_signals(Manager *m) { |
718db961 | 500 | _cleanup_close_ int fd = -1; |
80876c20 LP |
501 | |
502 | assert(m); | |
503 | ||
638cece4 | 504 | if (MANAGER_IS_TEST_RUN(m)) |
37453b3a EV |
505 | return 0; |
506 | ||
a41b539e | 507 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
508 | * this will fail with EPERM (older) or EINVAL (newer), so |
509 | * ignore that. */ | |
4c701096 | 510 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 511 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 512 | |
a41b539e LP |
513 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
514 | if (fd < 0) { | |
515 | /* Support systems without virtual console */ | |
516 | if (fd != -ENOENT) | |
56f64d95 | 517 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 518 | } else { |
80876c20 LP |
519 | /* Enable that we get SIGWINCH on kbrequest */ |
520 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 521 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
522 | } |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
8750ac02 ZJS |
527 | #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1) |
528 | ||
ce578209 | 529 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
530 | struct sigaction sa = { |
531 | .sa_handler = SIG_DFL, | |
532 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
533 | }; | |
718db961 LP |
534 | sigset_t mask; |
535 | int r; | |
60918275 | 536 | |
ce578209 LP |
537 | assert(m); |
538 | ||
57c0c30e LP |
539 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
540 | ||
4dffec14 LP |
541 | /* We make liberal use of realtime signals here. On |
542 | * Linux/glibc we have 30 of them (with the exception of Linux | |
543 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
544 | * (aka SIGRTMAX). */ | |
7d793605 | 545 | |
4dffec14 | 546 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
547 | sigset_add_many(&mask, |
548 | SIGCHLD, /* Child died */ | |
549 | SIGTERM, /* Reexecute daemon */ | |
550 | SIGHUP, /* Reload configuration */ | |
54d04cd1 | 551 | SIGUSR1, /* systemd: reconnect to D-Bus */ |
7d793605 LP |
552 | SIGUSR2, /* systemd: dump status */ |
553 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
554 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
555 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 556 | |
7d793605 | 557 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 558 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
559 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
560 | SIGRTMIN+3, /* systemd: start halt.target */ | |
561 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
562 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 563 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
564 | |
565 | /* ... space for more special targets ... */ | |
566 | ||
0003d1ab LP |
567 | SIGRTMIN+13, /* systemd: Immediate halt */ |
568 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
569 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
570 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
571 | |
572 | /* ... space for more immediate system state changes ... */ | |
573 | ||
0658666b LP |
574 | SIGRTMIN+20, /* systemd: enable status messages */ |
575 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
576 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
577 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 578 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
463aef23 | 579 | SIGRTMIN+25, /* systemd: reexecute manager */ |
4dffec14 | 580 | |
8750ac02 ZJS |
581 | /* Apparently Linux on hppa had fewer RT signals until v3.18, |
582 | * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered, | |
583 | * see commit v3.17-7614-g1f25df2eff. | |
584 | * | |
585 | * We cannot unconditionally make use of those signals here, | |
586 | * so let's use a runtime check. Since these commands are | |
587 | * accessible by different means and only really a safety | |
588 | * net, the missing functionality on hppa shouldn't matter. | |
589 | */ | |
590 | ||
591 | RTSIG_IF_AVAILABLE(SIGRTMIN+26), /* systemd: set log target to journal-or-kmsg */ | |
592 | RTSIG_IF_AVAILABLE(SIGRTMIN+27), /* systemd: set log target to console */ | |
593 | RTSIG_IF_AVAILABLE(SIGRTMIN+28), /* systemd: set log target to kmsg */ | |
594 | RTSIG_IF_AVAILABLE(SIGRTMIN+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */ | |
4dffec14 LP |
595 | |
596 | /* ... one free signal here SIGRTMIN+30 ... */ | |
7d793605 | 597 | -1); |
ce578209 LP |
598 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
599 | ||
718db961 LP |
600 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
601 | if (m->signal_fd < 0) | |
ce578209 LP |
602 | return -errno; |
603 | ||
151b9b96 | 604 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
605 | if (r < 0) |
606 | return r; | |
ce578209 | 607 | |
7dfbe2e3 TG |
608 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
609 | ||
d8fdc620 LP |
610 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
611 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
612 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
613 | * status information before detecting that there's no process in a cgroup. */ | |
614 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
615 | if (r < 0) |
616 | return r; | |
617 | ||
463d0d15 | 618 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 619 | return enable_special_signals(m); |
e1414003 | 620 | |
ce578209 LP |
621 | return 0; |
622 | } | |
623 | ||
1ad6e8b3 | 624 | static char** sanitize_environment(char **l) { |
f069efb4 | 625 | |
47cf8ff2 | 626 | /* Let's remove some environment variables that we need ourselves to communicate with our clients */ |
f069efb4 | 627 | strv_env_unset_many( |
1ad6e8b3 | 628 | l, |
8047ac8f LP |
629 | "CACHE_DIRECTORY", |
630 | "CONFIGURATION_DIRECTORY", | |
bb0c0d6f | 631 | "CREDENTIALS_DIRECTORY", |
47cf8ff2 LP |
632 | "EXIT_CODE", |
633 | "EXIT_STATUS", | |
634 | "INVOCATION_ID", | |
635 | "JOURNAL_STREAM", | |
636 | "LISTEN_FDNAMES", | |
637 | "LISTEN_FDS", | |
638 | "LISTEN_PID", | |
8047ac8f | 639 | "LOGS_DIRECTORY", |
f069efb4 LP |
640 | "MAINPID", |
641 | "MANAGERPID", | |
47cf8ff2 | 642 | "NOTIFY_SOCKET", |
dcf3c3c3 | 643 | "PIDFILE", |
47cf8ff2 LP |
644 | "REMOTE_ADDR", |
645 | "REMOTE_PORT", | |
8047ac8f | 646 | "RUNTIME_DIRECTORY", |
47cf8ff2 | 647 | "SERVICE_RESULT", |
8047ac8f | 648 | "STATE_DIRECTORY", |
f069efb4 LP |
649 | "WATCHDOG_PID", |
650 | "WATCHDOG_USEC", | |
651 | NULL); | |
47cf8ff2 LP |
652 | |
653 | /* Let's order the environment alphabetically, just to make it pretty */ | |
305757d8 | 654 | return strv_sort(l); |
f069efb4 LP |
655 | } |
656 | ||
79a224c4 | 657 | int manager_default_environment(Manager *m) { |
db11487d ZJS |
658 | int r; |
659 | ||
71ecc858 LP |
660 | assert(m); |
661 | ||
1ad6e8b3 LP |
662 | m->transient_environment = strv_free(m->transient_environment); |
663 | ||
463d0d15 | 664 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
665 | /* The system manager always starts with a clean |
666 | * environment for its children. It does not import | |
71cb7d30 | 667 | * the kernel's or the parents' exported variables. |
e21fea24 | 668 | * |
71cb7d30 | 669 | * The initial passed environment is untouched to keep |
e21fea24 KS |
670 | * /proc/self/environ valid; it is used for tagging |
671 | * the init process inside containers. */ | |
1ad6e8b3 | 672 | m->transient_environment = strv_new("PATH=" DEFAULT_PATH); |
db11487d ZJS |
673 | if (!m->transient_environment) |
674 | return log_oom(); | |
e21fea24 KS |
675 | |
676 | /* Import locale variables LC_*= from configuration */ | |
1ad6e8b3 | 677 | (void) locale_setup(&m->transient_environment); |
db11487d | 678 | } else { |
aaf057c4 | 679 | /* The user manager passes its own environment along to its children, except for $PATH. */ |
1ad6e8b3 | 680 | m->transient_environment = strv_copy(environ); |
db11487d ZJS |
681 | if (!m->transient_environment) |
682 | return log_oom(); | |
683 | ||
aaf057c4 | 684 | r = strv_env_replace_strdup(&m->transient_environment, "PATH=" DEFAULT_USER_PATH); |
db11487d ZJS |
685 | if (r < 0) |
686 | return log_oom(); | |
db11487d | 687 | } |
8b55b8c4 | 688 | |
1ad6e8b3 | 689 | sanitize_environment(m->transient_environment); |
9d5a3757 | 690 | |
e21fea24 | 691 | return 0; |
71ecc858 LP |
692 | } |
693 | ||
3536f49e YW |
694 | static int manager_setup_prefix(Manager *m) { |
695 | struct table_entry { | |
696 | uint64_t type; | |
697 | const char *suffix; | |
698 | }; | |
699 | ||
72fd1768 | 700 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
701 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
702 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
703 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
704 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
3536f49e YW |
705 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, |
706 | }; | |
707 | ||
72fd1768 | 708 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
709 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
710 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
711 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, | |
712 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
713 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
3536f49e YW |
714 | }; |
715 | ||
3536f49e YW |
716 | assert(m); |
717 | ||
24b45970 ZJS |
718 | const struct table_entry *p = MANAGER_IS_SYSTEM(m) ? paths_system : paths_user; |
719 | int r; | |
3536f49e | 720 | |
24b45970 | 721 | for (ExecDirectoryType i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
51327bcc | 722 | r = sd_path_lookup(p[i].type, p[i].suffix, &m->prefix[i]); |
3536f49e | 723 | if (r < 0) |
998df7ce ZJS |
724 | return log_warning_errno(r, "Failed to lookup %s path: %m", |
725 | exec_directory_type_to_string(i)); | |
3536f49e YW |
726 | } |
727 | ||
728 | return 0; | |
729 | } | |
730 | ||
e8630e69 ZJS |
731 | static void manager_free_unit_name_maps(Manager *m) { |
732 | m->unit_id_map = hashmap_free(m->unit_id_map); | |
733 | m->unit_name_map = hashmap_free(m->unit_name_map); | |
3fb2326f | 734 | m->unit_path_cache = set_free(m->unit_path_cache); |
c2911d48 | 735 | m->unit_cache_timestamp_hash = 0; |
e8630e69 ZJS |
736 | } |
737 | ||
279d81dd LP |
738 | static int manager_setup_run_queue(Manager *m) { |
739 | int r; | |
740 | ||
741 | assert(m); | |
742 | assert(!m->run_queue_event_source); | |
743 | ||
744 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
745 | if (r < 0) | |
746 | return r; | |
747 | ||
748 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
749 | if (r < 0) | |
750 | return r; | |
751 | ||
752 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
753 | if (r < 0) | |
754 | return r; | |
755 | ||
756 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
575b300b LP |
761 | static int manager_setup_sigchld_event_source(Manager *m) { |
762 | int r; | |
763 | ||
764 | assert(m); | |
765 | assert(!m->sigchld_event_source); | |
766 | ||
767 | r = sd_event_add_defer(m->event, &m->sigchld_event_source, manager_dispatch_sigchld, m); | |
768 | if (r < 0) | |
769 | return r; | |
770 | ||
771 | r = sd_event_source_set_priority(m->sigchld_event_source, SD_EVENT_PRIORITY_NORMAL-7); | |
772 | if (r < 0) | |
773 | return r; | |
774 | ||
775 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); | |
776 | if (r < 0) | |
777 | return r; | |
778 | ||
779 | (void) sd_event_source_set_description(m->sigchld_event_source, "manager-sigchld"); | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
638cece4 | 784 | int manager_new(UnitFileScope scope, ManagerTestRunFlags test_run_flags, Manager **_m) { |
c70cac54 | 785 | _cleanup_(manager_freep) Manager *m = NULL; |
bb0c0d6f | 786 | const char *e; |
e3dd987c | 787 | int r; |
8e274523 LP |
788 | |
789 | assert(_m); | |
463d0d15 | 790 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 791 | |
3ad228ce | 792 | m = new(Manager, 1); |
915b3753 | 793 | if (!m) |
8e274523 | 794 | return -ENOMEM; |
60918275 | 795 | |
3ad228ce LP |
796 | *m = (Manager) { |
797 | .unit_file_scope = scope, | |
798 | .objective = _MANAGER_OBJECTIVE_INVALID, | |
799 | ||
36cf4507 ZJS |
800 | .status_unit_format = STATUS_UNIT_FORMAT_DEFAULT, |
801 | ||
3ad228ce LP |
802 | .default_timer_accuracy_usec = USEC_PER_MINUTE, |
803 | .default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT, | |
804 | .default_tasks_accounting = true, | |
3a0f06c4 | 805 | .default_tasks_max = TASKS_MAX_UNSET, |
3ad228ce LP |
806 | .default_timeout_start_usec = DEFAULT_TIMEOUT_USEC, |
807 | .default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC, | |
808 | .default_restart_usec = DEFAULT_RESTART_USEC, | |
809 | ||
810 | .original_log_level = -1, | |
811 | .original_log_target = _LOG_TARGET_INVALID, | |
812 | ||
986935cf FB |
813 | .watchdog_overridden[WATCHDOG_RUNTIME] = USEC_INFINITY, |
814 | .watchdog_overridden[WATCHDOG_REBOOT] = USEC_INFINITY, | |
815 | .watchdog_overridden[WATCHDOG_KEXEC] = USEC_INFINITY, | |
816 | ||
44a41954 FB |
817 | .show_status_overridden = _SHOW_STATUS_INVALID, |
818 | ||
3ad228ce LP |
819 | .notify_fd = -1, |
820 | .cgroups_agent_fd = -1, | |
821 | .signal_fd = -1, | |
822 | .time_change_fd = -1, | |
823 | .user_lookup_fds = { -1, -1 }, | |
824 | .private_listen_fd = -1, | |
825 | .dev_autofs_fd = -1, | |
826 | .cgroup_inotify_fd = -1, | |
827 | .pin_cgroupfs_fd = -1, | |
828 | .ask_password_inotify_fd = -1, | |
829 | .idle_pipe = { -1, -1, -1, -1}, | |
830 | ||
831 | /* start as id #1, so that we can leave #0 around as "null-like" value */ | |
832 | .current_job_id = 1, | |
833 | ||
834 | .have_ask_password = -EINVAL, /* we don't know */ | |
835 | .first_boot = -1, | |
836 | .test_run_flags = test_run_flags, | |
afcfaa69 LP |
837 | |
838 | .default_oom_policy = OOM_STOP, | |
3ad228ce | 839 | }; |
80876c20 | 840 | |
349cc4a5 | 841 | #if ENABLE_EFI |
463d0d15 | 842 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
843 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
844 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
845 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
846 | #endif |
847 | ||
f2341e0a | 848 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
849 | if (MANAGER_IS_SYSTEM(m)) { |
850 | m->unit_log_field = "UNIT="; | |
851 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
852 | |
853 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 854 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
855 | } else { |
856 | m->unit_log_field = "USER_UNIT="; | |
857 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
858 | |
859 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 860 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 861 | } |
f2341e0a | 862 | |
2e5c94b9 | 863 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
8c227e7f | 864 | m->ctrl_alt_del_ratelimit = (RateLimit) { .interval = 2 * USEC_PER_SEC, .burst = 7 }; |
2e5c94b9 | 865 | |
e21fea24 KS |
866 | r = manager_default_environment(m); |
867 | if (r < 0) | |
c70cac54 | 868 | return r; |
1137a57c | 869 | |
d5099efc | 870 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 871 | if (r < 0) |
c70cac54 | 872 | return r; |
60918275 | 873 | |
548f6937 | 874 | r = hashmap_ensure_allocated(&m->cgroup_unit, &path_hash_ops); |
718db961 | 875 | if (r < 0) |
c70cac54 | 876 | return r; |
9152c765 | 877 | |
d5099efc | 878 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 879 | if (r < 0) |
c70cac54 | 880 | return r; |
05e343b7 | 881 | |
da8e1782 MO |
882 | r = prioq_ensure_allocated(&m->run_queue, compare_job_priority); |
883 | if (r < 0) | |
884 | return r; | |
885 | ||
e8112e67 | 886 | r = manager_setup_prefix(m); |
718db961 | 887 | if (r < 0) |
c70cac54 | 888 | return r; |
8742514c | 889 | |
786d19fd LP |
890 | r = get_credentials_dir(&e); |
891 | if (r >= 0) { | |
bb0c0d6f LP |
892 | m->received_credentials = strdup(e); |
893 | if (!m->received_credentials) | |
894 | return -ENOMEM; | |
895 | } | |
896 | ||
e8112e67 | 897 | r = sd_event_default(&m->event); |
8742514c | 898 | if (r < 0) |
c70cac54 | 899 | return r; |
9152c765 | 900 | |
e8112e67 | 901 | r = manager_setup_run_queue(m); |
a1d32bac | 902 | if (r < 0) |
c70cac54 | 903 | return r; |
8e274523 | 904 | |
5dd2f5ff | 905 | if (FLAGS_SET(test_run_flags, MANAGER_TEST_RUN_MINIMAL)) { |
e8112e67 ZJS |
906 | m->cgroup_root = strdup(""); |
907 | if (!m->cgroup_root) | |
908 | return -ENOMEM; | |
909 | } else { | |
910 | r = manager_setup_signals(m); | |
911 | if (r < 0) | |
912 | return r; | |
8c47c732 | 913 | |
e8112e67 ZJS |
914 | r = manager_setup_cgroup(m); |
915 | if (r < 0) | |
916 | return r; | |
575b300b | 917 | |
e8112e67 ZJS |
918 | r = manager_setup_time_change(m); |
919 | if (r < 0) | |
920 | return r; | |
9670d583 | 921 | |
bbf5fd8e LP |
922 | r = manager_read_timezone_stat(m); |
923 | if (r < 0) | |
924 | return r; | |
925 | ||
ea5c5f68 | 926 | (void) manager_setup_timezone_change(m); |
bbf5fd8e | 927 | |
e8112e67 ZJS |
928 | r = manager_setup_sigchld_event_source(m); |
929 | if (r < 0) | |
930 | return r; | |
b1994387 ILG |
931 | |
932 | #if HAVE_LIBBPF | |
933 | if (MANAGER_IS_SYSTEM(m) && lsm_bpf_supported()) { | |
934 | r = lsm_bpf_setup(m); | |
935 | if (r < 0) | |
936 | return r; | |
937 | } | |
938 | #endif | |
e8112e67 | 939 | } |
e27fe688 | 940 | |
2f8c48b6 AZ |
941 | if (test_run_flags == 0) { |
942 | if (MANAGER_IS_SYSTEM(m)) | |
943 | r = mkdir_label("/run/systemd/units", 0755); | |
944 | else { | |
945 | _cleanup_free_ char *units_path = NULL; | |
946 | r = xdg_user_runtime_dir(&units_path, "/systemd/units"); | |
947 | if (r < 0) | |
948 | return r; | |
949 | r = mkdir_p_label(units_path, 0755); | |
950 | } | |
951 | ||
d3070fbd | 952 | if (r < 0 && r != -EEXIST) |
c70cac54 | 953 | return r; |
d3070fbd LP |
954 | } |
955 | ||
e27fe688 LP |
956 | m->taint_usr = |
957 | !in_initrd() && | |
958 | dir_is_empty("/usr") > 0; | |
959 | ||
232f6754 ZJS |
960 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
961 | * since they might have gotten serialized across the reexec. */ | |
3536f49e | 962 | |
1cc6c93a YW |
963 | *_m = TAKE_PTR(m); |
964 | ||
8e274523 | 965 | return 0; |
60918275 LP |
966 | } |
967 | ||
d86f9d52 | 968 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 969 | int r; |
d86f9d52 | 970 | |
638cece4 | 971 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
972 | return 0; |
973 | ||
d86f9d52 LP |
974 | if (m->notify_fd < 0) { |
975 | _cleanup_close_ int fd = -1; | |
f36a9d59 ZJS |
976 | union sockaddr_union sa; |
977 | socklen_t sa_len; | |
d86f9d52 LP |
978 | |
979 | /* First free all secondary fields */ | |
a1e58e8e | 980 | m->notify_socket = mfree(m->notify_socket); |
5dcadb4c | 981 | m->notify_event_source = sd_event_source_disable_unref(m->notify_event_source); |
d86f9d52 LP |
982 | |
983 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
984 | if (fd < 0) |
985 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 986 | |
a47806fa LP |
987 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
988 | ||
b910cc72 | 989 | m->notify_socket = path_join(m->prefix[EXEC_DIRECTORY_RUNTIME], "systemd/notify"); |
498e87d6 LP |
990 | if (!m->notify_socket) |
991 | return log_oom(); | |
992 | ||
f36a9d59 ZJS |
993 | r = sockaddr_un_set_path(&sa.un, m->notify_socket); |
994 | if (r < 0) | |
995 | return log_error_errno(r, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", | |
996 | m->notify_socket); | |
997 | sa_len = r; | |
15a3e96f | 998 | |
498e87d6 | 999 | (void) mkdir_parents_label(m->notify_socket, 0755); |
fbda85b0 | 1000 | (void) sockaddr_un_unlink(&sa.un); |
7181dbdb | 1001 | |
45ae2f72 | 1002 | r = mac_selinux_bind(fd, &sa.sa, sa_len); |
4a62c710 | 1003 | if (r < 0) |
45ae2f72 | 1004 | return log_error_errno(r, "bind(%s) failed: %m", m->notify_socket); |
d86f9d52 | 1005 | |
2ff48e98 | 1006 | r = setsockopt_int(fd, SOL_SOCKET, SO_PASSCRED, true); |
4a62c710 | 1007 | if (r < 0) |
2ff48e98 | 1008 | return log_error_errno(r, "SO_PASSCRED failed: %m"); |
d86f9d52 | 1009 | |
c10d6bdb | 1010 | m->notify_fd = TAKE_FD(fd); |
d86f9d52 LP |
1011 | |
1012 | log_debug("Using notification socket %s", m->notify_socket); | |
1013 | } | |
1014 | ||
1015 | if (!m->notify_event_source) { | |
151b9b96 | 1016 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
1017 | if (r < 0) |
1018 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 1019 | |
d8fdc620 LP |
1020 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
1021 | * service an exit message belongs. */ | |
575b300b | 1022 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-8); |
23bbb0de MS |
1023 | if (r < 0) |
1024 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
1025 | |
1026 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
1027 | } |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
d8fdc620 LP |
1032 | static int manager_setup_cgroups_agent(Manager *m) { |
1033 | ||
1034 | static const union sockaddr_union sa = { | |
1035 | .un.sun_family = AF_UNIX, | |
1036 | .un.sun_path = "/run/systemd/cgroups-agent", | |
1037 | }; | |
1038 | int r; | |
1039 | ||
1040 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
1041 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
1042 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
1043 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
1044 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
1045 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
1046 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
1047 | * we thus won't lose messages. | |
1048 | * | |
1049 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
1050 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
1051 | * bus for these messages. */ | |
1052 | ||
638cece4 | 1053 | if (MANAGER_IS_TEST_RUN(m)) |
d8fdc620 LP |
1054 | return 0; |
1055 | ||
1056 | if (!MANAGER_IS_SYSTEM(m)) | |
1057 | return 0; | |
1058 | ||
c22800e4 | 1059 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
1060 | if (r < 0) |
1061 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
1062 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
1063 | return 0; |
1064 | ||
1065 | if (m->cgroups_agent_fd < 0) { | |
1066 | _cleanup_close_ int fd = -1; | |
1067 | ||
1068 | /* First free all secondary fields */ | |
5dcadb4c | 1069 | m->cgroups_agent_event_source = sd_event_source_disable_unref(m->cgroups_agent_event_source); |
d8fdc620 LP |
1070 | |
1071 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1072 | if (fd < 0) | |
1073 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
1074 | ||
1075 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
1076 | ||
155b6876 | 1077 | (void) sockaddr_un_unlink(&sa.un); |
d8fdc620 LP |
1078 | |
1079 | /* Only allow root to connect to this socket */ | |
1080 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 1081 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
1082 | if (r < 0) |
1083 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
1084 | ||
0b7e8b32 | 1085 | m->cgroups_agent_fd = TAKE_FD(fd); |
d8fdc620 LP |
1086 | } |
1087 | ||
1088 | if (!m->cgroups_agent_event_source) { | |
1089 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
1090 | if (r < 0) | |
1091 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
1092 | ||
cbe83389 LP |
1093 | /* Process cgroups notifications early. Note that when the agent notification is received |
1094 | * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than | |
1095 | * that. Also see handling of cgroup inotify for the unified cgroup stuff. */ | |
1096 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-9); | |
d8fdc620 LP |
1097 | if (r < 0) |
1098 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
1099 | ||
1100 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
1101 | } | |
1102 | ||
1103 | return 0; | |
1104 | } | |
1105 | ||
00d9ef85 LP |
1106 | static int manager_setup_user_lookup_fd(Manager *m) { |
1107 | int r; | |
1108 | ||
1109 | assert(m); | |
1110 | ||
1111 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
1112 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
1113 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
1114 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
1115 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
1116 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
1117 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
1118 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
1119 | * this purpose. | |
1120 | * | |
1121 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
1122 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
1123 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
1124 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
1125 | * | |
1126 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
1127 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
1128 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
1129 | ||
1130 | if (m->user_lookup_fds[0] < 0) { | |
1131 | ||
1132 | /* Free all secondary fields */ | |
1133 | safe_close_pair(m->user_lookup_fds); | |
5dcadb4c | 1134 | m->user_lookup_event_source = sd_event_source_disable_unref(m->user_lookup_event_source); |
00d9ef85 LP |
1135 | |
1136 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
1137 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
1138 | ||
1139 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
1140 | } | |
1141 | ||
1142 | if (!m->user_lookup_event_source) { | |
1143 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
1144 | if (r < 0) | |
1145 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
1146 | ||
1147 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
1148 | * resolutions */ | |
67ae4e8d | 1149 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-11); |
00d9ef85 | 1150 | if (r < 0) |
5238e957 | 1151 | return log_error_errno(errno, "Failed to set priority of user lookup event source: %m"); |
00d9ef85 LP |
1152 | |
1153 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
1154 | } | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
23a177ef | 1159 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 1160 | Unit *u; |
23a177ef LP |
1161 | unsigned n = 0; |
1162 | ||
1163 | assert(m); | |
1164 | ||
595ed347 MS |
1165 | while ((u = m->cleanup_queue)) { |
1166 | assert(u->in_cleanup_queue); | |
23a177ef | 1167 | |
595ed347 | 1168 | unit_free(u); |
23a177ef LP |
1169 | n++; |
1170 | } | |
1171 | ||
1172 | return n; | |
1173 | } | |
1174 | ||
eced69b3 | 1175 | enum { |
35b8ca3a | 1176 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
1177 | GC_OFFSET_UNSURE, /* No clue */ |
1178 | GC_OFFSET_GOOD, /* We still need this unit */ | |
1179 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
1180 | _GC_OFFSET_MAX | |
1181 | }; | |
1182 | ||
00d9ef85 | 1183 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
1184 | Unit *other; |
1185 | ||
1186 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
1187 | ||
1188 | /* Recursively mark referenced units as GOOD as well */ | |
15ed3c3a | 1189 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_REFERENCES) |
4892084f LN |
1190 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
1191 | unit_gc_mark_good(other, gc_marker); | |
1192 | } | |
1193 | ||
eced69b3 | 1194 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 1195 | Unit *other; |
eced69b3 | 1196 | bool is_bad; |
701cc384 LP |
1197 | |
1198 | assert(u); | |
1199 | ||
4c701096 YW |
1200 | if (IN_SET(u->gc_marker - gc_marker, |
1201 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1202 | return; |
1203 | ||
ac155bb8 | 1204 | if (u->in_cleanup_queue) |
701cc384 LP |
1205 | goto bad; |
1206 | ||
f2f725e5 | 1207 | if (!unit_may_gc(u)) |
701cc384 LP |
1208 | goto good; |
1209 | ||
ac155bb8 | 1210 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1211 | |
1212 | is_bad = true; | |
1213 | ||
15ed3c3a | 1214 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_REFERENCED_BY) { |
701cc384 LP |
1215 | unit_gc_sweep(other, gc_marker); |
1216 | ||
ac155bb8 | 1217 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1218 | goto good; |
eced69b3 | 1219 | |
ac155bb8 | 1220 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1221 | is_bad = false; |
701cc384 LP |
1222 | } |
1223 | ||
ef3fc326 ZJS |
1224 | const UnitRef *ref; |
1225 | LIST_FOREACH(refs_by_target, ref, u->refs_by_target) { | |
1226 | unit_gc_sweep(ref->source, gc_marker); | |
2641f02e | 1227 | |
ef3fc326 ZJS |
1228 | if (ref->source->gc_marker == gc_marker + GC_OFFSET_GOOD) |
1229 | goto good; | |
2641f02e | 1230 | |
ef3fc326 ZJS |
1231 | if (ref->source->gc_marker != gc_marker + GC_OFFSET_BAD) |
1232 | is_bad = false; | |
2641f02e | 1233 | } |
701cc384 | 1234 | |
eced69b3 LP |
1235 | if (is_bad) |
1236 | goto bad; | |
1237 | ||
1238 | /* We were unable to find anything out about this entry, so | |
1239 | * let's investigate it later */ | |
ac155bb8 | 1240 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1241 | unit_add_to_gc_queue(u); |
1242 | return; | |
1243 | ||
701cc384 | 1244 | bad: |
eced69b3 LP |
1245 | /* We definitely know that this one is not useful anymore, so |
1246 | * let's mark it for deletion */ | |
ac155bb8 | 1247 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1248 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1249 | return; |
1250 | ||
1251 | good: | |
4892084f | 1252 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1253 | } |
1254 | ||
c5a97ed1 LP |
1255 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1256 | unsigned n = 0, gc_marker; | |
595ed347 | 1257 | Unit *u; |
701cc384 LP |
1258 | |
1259 | assert(m); | |
1260 | ||
cf1265e1 | 1261 | /* log_debug("Running GC..."); */ |
701cc384 | 1262 | |
eced69b3 LP |
1263 | m->gc_marker += _GC_OFFSET_MAX; |
1264 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1265 | m->gc_marker = 1; |
701cc384 | 1266 | |
eced69b3 LP |
1267 | gc_marker = m->gc_marker; |
1268 | ||
c5a97ed1 | 1269 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1270 | assert(u->in_gc_queue); |
701cc384 | 1271 | |
595ed347 | 1272 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1273 | |
c5a97ed1 | 1274 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1275 | u->in_gc_queue = false; |
701cc384 LP |
1276 | |
1277 | n++; | |
1278 | ||
4c701096 YW |
1279 | if (IN_SET(u->gc_marker - gc_marker, |
1280 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1281 | if (u->id) |
f2341e0a | 1282 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1283 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1284 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1285 | } |
1286 | } | |
1287 | ||
701cc384 LP |
1288 | return n; |
1289 | } | |
1290 | ||
c5a97ed1 LP |
1291 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1292 | unsigned n = 0; | |
1293 | Job *j; | |
1294 | ||
1295 | assert(m); | |
1296 | ||
1297 | while ((j = m->gc_job_queue)) { | |
1298 | assert(j->in_gc_queue); | |
1299 | ||
1300 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1301 | j->in_gc_queue = false; | |
1302 | ||
1303 | n++; | |
1304 | ||
2ab3050f | 1305 | if (!job_may_gc(j)) |
c5a97ed1 LP |
1306 | continue; |
1307 | ||
1308 | log_unit_debug(j->unit, "Collecting job."); | |
1309 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1310 | } | |
1311 | ||
1312 | return n; | |
1313 | } | |
1314 | ||
a3c1168a LP |
1315 | static unsigned manager_dispatch_stop_when_unneeded_queue(Manager *m) { |
1316 | unsigned n = 0; | |
1317 | Unit *u; | |
1318 | int r; | |
1319 | ||
1320 | assert(m); | |
1321 | ||
1322 | while ((u = m->stop_when_unneeded_queue)) { | |
1323 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
a3c1168a LP |
1324 | |
1325 | assert(u->in_stop_when_unneeded_queue); | |
1326 | LIST_REMOVE(stop_when_unneeded_queue, m->stop_when_unneeded_queue, u); | |
1327 | u->in_stop_when_unneeded_queue = false; | |
1328 | ||
1329 | n++; | |
1330 | ||
1331 | if (!unit_is_unneeded(u)) | |
1332 | continue; | |
1333 | ||
1334 | log_unit_debug(u, "Unit is not needed anymore."); | |
1335 | ||
1336 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1337 | * service being unnecessary after a while. */ | |
1338 | ||
0bc488c9 | 1339 | if (!ratelimit_below(&u->auto_start_stop_ratelimit)) { |
a3c1168a LP |
1340 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); |
1341 | continue; | |
1342 | } | |
1343 | ||
1344 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
50cbaba4 | 1345 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, NULL, &error, NULL); |
a3c1168a LP |
1346 | if (r < 0) |
1347 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1348 | } | |
1349 | ||
1350 | return n; | |
1351 | } | |
1352 | ||
0bc488c9 LP |
1353 | static unsigned manager_dispatch_start_when_upheld_queue(Manager *m) { |
1354 | unsigned n = 0; | |
1355 | Unit *u; | |
1356 | int r; | |
1357 | ||
1358 | assert(m); | |
1359 | ||
1360 | while ((u = m->start_when_upheld_queue)) { | |
1361 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1362 | Unit *culprit = NULL; | |
1363 | ||
1364 | assert(u->in_start_when_upheld_queue); | |
1365 | LIST_REMOVE(start_when_upheld_queue, m->start_when_upheld_queue, u); | |
1366 | u->in_start_when_upheld_queue = false; | |
1367 | ||
1368 | n++; | |
1369 | ||
1370 | if (!unit_is_upheld_by_active(u, &culprit)) | |
1371 | continue; | |
1372 | ||
1373 | log_unit_debug(u, "Unit is started because upheld by active unit %s.", culprit->id); | |
1374 | ||
1375 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1376 | * service being unnecessary after a while. */ | |
1377 | ||
1378 | if (!ratelimit_below(&u->auto_start_stop_ratelimit)) { | |
1379 | log_unit_warning(u, "Unit needs to be started because active unit %s upholds it, but not starting since we tried this too often recently.", culprit->id); | |
1380 | continue; | |
1381 | } | |
1382 | ||
1383 | r = manager_add_job(u->manager, JOB_START, u, JOB_FAIL, NULL, &error, NULL); | |
1384 | if (r < 0) | |
1385 | log_unit_warning_errno(u, r, "Failed to enqueue start job, ignoring: %s", bus_error_message(&error, r)); | |
1386 | } | |
1387 | ||
1388 | return n; | |
1389 | } | |
1390 | ||
56c59592 LP |
1391 | static unsigned manager_dispatch_stop_when_bound_queue(Manager *m) { |
1392 | unsigned n = 0; | |
1393 | Unit *u; | |
1394 | int r; | |
1395 | ||
1396 | assert(m); | |
1397 | ||
1398 | while ((u = m->stop_when_bound_queue)) { | |
1399 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1400 | Unit *culprit = NULL; | |
1401 | ||
1402 | assert(u->in_stop_when_bound_queue); | |
1403 | LIST_REMOVE(stop_when_bound_queue, m->stop_when_bound_queue, u); | |
1404 | u->in_stop_when_bound_queue = false; | |
1405 | ||
1406 | n++; | |
1407 | ||
1408 | if (!unit_is_bound_by_inactive(u, &culprit)) | |
1409 | continue; | |
1410 | ||
1411 | log_unit_debug(u, "Unit is stopped because bound to inactive unit %s.", culprit->id); | |
1412 | ||
1413 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1414 | * service being unnecessary after a while. */ | |
1415 | ||
1416 | if (!ratelimit_below(&u->auto_start_stop_ratelimit)) { | |
1417 | log_unit_warning(u, "Unit needs to be stopped because it is bound to inactive unit %s it, but not stopping since we tried this too often recently.", culprit->id); | |
1418 | continue; | |
1419 | } | |
1420 | ||
1421 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_REPLACE, NULL, &error, NULL); | |
1422 | if (r < 0) | |
1423 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1424 | } | |
1425 | ||
1426 | return n; | |
1427 | } | |
1428 | ||
a16e1123 | 1429 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1430 | Unit *u; |
60918275 LP |
1431 | |
1432 | assert(m); | |
1433 | ||
87f0e418 LP |
1434 | while ((u = hashmap_first(m->units))) |
1435 | unit_free(u); | |
964e0949 LP |
1436 | |
1437 | manager_dispatch_cleanup_queue(m); | |
1438 | ||
1439 | assert(!m->load_queue); | |
da8e1782 | 1440 | assert(prioq_isempty(m->run_queue)); |
964e0949 LP |
1441 | assert(!m->dbus_unit_queue); |
1442 | assert(!m->dbus_job_queue); | |
1443 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1444 | assert(!m->gc_unit_queue); |
1445 | assert(!m->gc_job_queue); | |
13e72103 MK |
1446 | assert(!m->cgroup_realize_queue); |
1447 | assert(!m->cgroup_empty_queue); | |
1448 | assert(!m->cgroup_oom_queue); | |
1449 | assert(!m->target_deps_queue); | |
a3c1168a | 1450 | assert(!m->stop_when_unneeded_queue); |
0bc488c9 | 1451 | assert(!m->start_when_upheld_queue); |
56c59592 | 1452 | assert(!m->stop_when_bound_queue); |
964e0949 | 1453 | |
964e0949 LP |
1454 | assert(hashmap_isempty(m->jobs)); |
1455 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1456 | |
1457 | m->n_on_console = 0; | |
1458 | m->n_running_jobs = 0; | |
1e75824c MK |
1459 | m->n_installed_jobs = 0; |
1460 | m->n_failed_jobs = 0; | |
a16e1123 LP |
1461 | } |
1462 | ||
06d8d842 | 1463 | Manager* manager_free(Manager *m) { |
06d8d842 ZJS |
1464 | if (!m) |
1465 | return NULL; | |
a16e1123 LP |
1466 | |
1467 | manager_clear_jobs_and_units(m); | |
23a177ef | 1468 | |
24b45970 | 1469 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) |
7824bbeb LP |
1470 | if (unit_vtable[c]->shutdown) |
1471 | unit_vtable[c]->shutdown(m); | |
1472 | ||
86036b26 LP |
1473 | /* Keep the cgroup hierarchy in place except when we know we are going down for good */ |
1474 | manager_shutdown_cgroup(m, IN_SET(m->objective, MANAGER_EXIT, MANAGER_REBOOT, MANAGER_POWEROFF, MANAGER_HALT, MANAGER_KEXEC)); | |
8e274523 | 1475 | |
07a78643 | 1476 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1477 | |
5e8d1c9a | 1478 | bus_done(m); |
19d22d43 | 1479 | manager_varlink_done(m); |
ea430986 | 1480 | |
e8a565cb YW |
1481 | exec_runtime_vacuum(m); |
1482 | hashmap_free(m->exec_runtime_by_id); | |
1483 | ||
29206d46 LP |
1484 | dynamic_user_vacuum(m, false); |
1485 | hashmap_free(m->dynamic_users); | |
1486 | ||
87f0e418 | 1487 | hashmap_free(m->units); |
4b58153d | 1488 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1489 | hashmap_free(m->jobs); |
62a76913 | 1490 | hashmap_free(m->watch_pids); |
05e343b7 | 1491 | hashmap_free(m->watch_bus); |
9152c765 | 1492 | |
da8e1782 MO |
1493 | prioq_free(m->run_queue); |
1494 | ||
95ae05c0 | 1495 | set_free(m->startup_units); |
f755e3b7 LP |
1496 | set_free(m->failed_units); |
1497 | ||
718db961 | 1498 | sd_event_source_unref(m->signal_event_source); |
575b300b | 1499 | sd_event_source_unref(m->sigchld_event_source); |
718db961 | 1500 | sd_event_source_unref(m->notify_event_source); |
d8fdc620 | 1501 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 | 1502 | sd_event_source_unref(m->time_change_event_source); |
bbf5fd8e | 1503 | sd_event_source_unref(m->timezone_change_event_source); |
718db961 | 1504 | sd_event_source_unref(m->jobs_in_progress_event_source); |
752b5905 | 1505 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1506 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1507 | |
03e334a1 LP |
1508 | safe_close(m->signal_fd); |
1509 | safe_close(m->notify_fd); | |
d8fdc620 | 1510 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1511 | safe_close(m->time_change_fd); |
00d9ef85 | 1512 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1513 | |
e46b13c8 ZJS |
1514 | manager_close_ask_password(m); |
1515 | ||
718db961 LP |
1516 | manager_close_idle_pipe(m); |
1517 | ||
1518 | sd_event_unref(m->event); | |
60918275 | 1519 | |
c952c6ec LP |
1520 | free(m->notify_socket); |
1521 | ||
84e3543e | 1522 | lookup_paths_free(&m->lookup_paths); |
1ad6e8b3 LP |
1523 | strv_free(m->transient_environment); |
1524 | strv_free(m->client_environment); | |
036643a2 | 1525 | |
4ad49000 | 1526 | hashmap_free(m->cgroup_unit); |
e8630e69 | 1527 | manager_free_unit_name_maps(m); |
33be102a | 1528 | |
664f88a7 LP |
1529 | free(m->switch_root); |
1530 | free(m->switch_root_init); | |
1531 | ||
31ce987c | 1532 | rlimit_free_all(m->rlimit); |
c93ff2e9 | 1533 | |
a57f7e2c LP |
1534 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1535 | hashmap_free(m->units_requiring_mounts_for); | |
1536 | ||
00d9ef85 LP |
1537 | hashmap_free(m->uid_refs); |
1538 | hashmap_free(m->gid_refs); | |
1539 | ||
24b45970 | 1540 | for (ExecDirectoryType dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a | 1541 | m->prefix[dt] = mfree(m->prefix[dt]); |
bb0c0d6f | 1542 | free(m->received_credentials); |
35aba85a | 1543 | |
b1994387 ILG |
1544 | #if BPF_FRAMEWORK |
1545 | lsm_bpf_destroy(m->restrict_fs); | |
1546 | #endif | |
1547 | ||
6b430fdb | 1548 | return mfree(m); |
60918275 LP |
1549 | } |
1550 | ||
04eb582a | 1551 | static void manager_enumerate_perpetual(Manager *m) { |
04eb582a LP |
1552 | assert(m); |
1553 | ||
1545051c | 1554 | if (FLAGS_SET(m->test_run_flags, MANAGER_TEST_RUN_MINIMAL)) |
b1d5246d ZJS |
1555 | return; |
1556 | ||
04eb582a | 1557 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1558 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
04eb582a LP |
1559 | if (!unit_type_supported(c)) { |
1560 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); | |
1561 | continue; | |
1562 | } | |
1563 | ||
1564 | if (unit_vtable[c]->enumerate_perpetual) | |
1565 | unit_vtable[c]->enumerate_perpetual(m); | |
1566 | } | |
1567 | } | |
1568 | ||
a1113e08 | 1569 | static void manager_enumerate(Manager *m) { |
f50e0a01 LP |
1570 | assert(m); |
1571 | ||
1545051c | 1572 | if (FLAGS_SET(m->test_run_flags, MANAGER_TEST_RUN_MINIMAL)) |
b1d5246d ZJS |
1573 | return; |
1574 | ||
04eb582a | 1575 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1576 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1577 | if (!unit_type_supported(c)) { |
03afec3c | 1578 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1579 | continue; |
a57f7e2c | 1580 | } |
f50e0a01 | 1581 | |
94b01dae ZJS |
1582 | if (unit_vtable[c]->enumerate) |
1583 | unit_vtable[c]->enumerate(m); | |
0faacd47 LP |
1584 | } |
1585 | ||
f50e0a01 | 1586 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1587 | } |
1588 | ||
007c6337 | 1589 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1590 | Unit *u; |
1591 | char *k; | |
007c6337 | 1592 | int r; |
a16e1123 LP |
1593 | |
1594 | assert(m); | |
f50e0a01 | 1595 | |
f0831ed2 LP |
1596 | log_debug("Invoking unit coldplug() handlers…"); |
1597 | ||
1598 | /* Let's place the units back into their deserialized state */ | |
90e74a66 | 1599 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f50e0a01 LP |
1600 | |
1601 | /* ignore aliases */ | |
ac155bb8 | 1602 | if (u->id != k) |
f50e0a01 LP |
1603 | continue; |
1604 | ||
007c6337 LP |
1605 | r = unit_coldplug(u); |
1606 | if (r < 0) | |
1607 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1608 | } |
a16e1123 LP |
1609 | } |
1610 | ||
f0831ed2 | 1611 | static void manager_catchup(Manager *m) { |
f0831ed2 LP |
1612 | Unit *u; |
1613 | char *k; | |
1614 | ||
1615 | assert(m); | |
1616 | ||
1617 | log_debug("Invoking unit catchup() handlers…"); | |
1618 | ||
1619 | /* Let's catch up on any state changes that happened while we were reloading/reexecing */ | |
90e74a66 | 1620 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f0831ed2 LP |
1621 | |
1622 | /* ignore aliases */ | |
1623 | if (u->id != k) | |
1624 | continue; | |
1625 | ||
1626 | unit_catchup(u); | |
1627 | } | |
1628 | } | |
1629 | ||
9ff1a6f1 | 1630 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9ff1a6f1 | 1631 | Unit *u; |
9588bc32 LP |
1632 | |
1633 | assert(m); | |
1634 | ||
90e74a66 | 1635 | HASHMAP_FOREACH(u, m->units) { |
9588bc32 LP |
1636 | |
1637 | if (fdset_size(fds) <= 0) | |
1638 | break; | |
1639 | ||
9ff1a6f1 LP |
1640 | if (!UNIT_VTABLE(u)->distribute_fds) |
1641 | continue; | |
9588bc32 | 1642 | |
9ff1a6f1 LP |
1643 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1644 | } | |
9588bc32 LP |
1645 | } |
1646 | ||
8559b3b7 LP |
1647 | static bool manager_dbus_is_running(Manager *m, bool deserialized) { |
1648 | Unit *u; | |
1649 | ||
1650 | assert(m); | |
1651 | ||
1652 | /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket | |
1653 | * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit | |
1654 | * rather than the current one. */ | |
1655 | ||
638cece4 | 1656 | if (MANAGER_IS_TEST_RUN(m)) |
8559b3b7 LP |
1657 | return false; |
1658 | ||
8559b3b7 LP |
1659 | u = manager_get_unit(m, SPECIAL_DBUS_SOCKET); |
1660 | if (!u) | |
1661 | return false; | |
1662 | if ((deserialized ? SOCKET(u)->deserialized_state : SOCKET(u)->state) != SOCKET_RUNNING) | |
1663 | return false; | |
1664 | ||
1665 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1666 | if (!u) | |
1667 | return false; | |
1668 | if (!IN_SET((deserialized ? SERVICE(u)->deserialized_state : SERVICE(u)->state), SERVICE_RUNNING, SERVICE_RELOAD)) | |
1669 | return false; | |
1670 | ||
1671 | return true; | |
1672 | } | |
1673 | ||
9d4c195c LP |
1674 | static void manager_setup_bus(Manager *m) { |
1675 | assert(m); | |
1676 | ||
1677 | /* Let's set up our private bus connection now, unconditionally */ | |
1678 | (void) bus_init_private(m); | |
1679 | ||
1680 | /* If we are in --user mode also connect to the system bus now */ | |
1681 | if (MANAGER_IS_USER(m)) | |
1682 | (void) bus_init_system(m); | |
1683 | ||
1684 | /* Let's connect to the bus now, but only if the unit is supposed to be up */ | |
1685 | if (manager_dbus_is_running(m, MANAGER_IS_RELOADING(m))) { | |
1686 | (void) bus_init_api(m); | |
1687 | ||
1688 | if (MANAGER_IS_SYSTEM(m)) | |
1689 | (void) bus_init_system(m); | |
1690 | } | |
1691 | } | |
1692 | ||
159f1e76 LP |
1693 | static void manager_preset_all(Manager *m) { |
1694 | int r; | |
1695 | ||
1696 | assert(m); | |
1697 | ||
1698 | if (m->first_boot <= 0) | |
1699 | return; | |
1700 | ||
1701 | if (!MANAGER_IS_SYSTEM(m)) | |
1702 | return; | |
1703 | ||
638cece4 | 1704 | if (MANAGER_IS_TEST_RUN(m)) |
159f1e76 LP |
1705 | return; |
1706 | ||
1707 | /* If this is the first boot, and we are in the host system, then preset everything */ | |
1708 | r = unit_file_preset_all(UNIT_FILE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); | |
1709 | if (r < 0) | |
1710 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1711 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
1712 | else | |
1713 | log_info("Populated /etc with preset unit settings."); | |
1714 | } | |
1715 | ||
5ce5e1ad LP |
1716 | static void manager_ready(Manager *m) { |
1717 | assert(m); | |
1718 | ||
1719 | /* After having loaded everything, do the final round of catching up with what might have changed */ | |
1720 | ||
1721 | m->objective = MANAGER_OK; /* Tell everyone we are up now */ | |
1722 | ||
1723 | /* It might be safe to log to the journal now and connect to dbus */ | |
1724 | manager_recheck_journal(m); | |
1725 | manager_recheck_dbus(m); | |
1726 | ||
5ce5e1ad LP |
1727 | /* Let's finally catch up with any changes that took place while we were reloading/reexecing */ |
1728 | manager_catchup(m); | |
c6e892bc | 1729 | |
15b9243c | 1730 | /* Create a file which will indicate when the manager started loading units the last time. */ |
4b3ad81b LB |
1731 | if (MANAGER_IS_SYSTEM(m)) |
1732 | (void) touch_file("/run/systemd/systemd-units-load", false, | |
1733 | m->timestamps[MANAGER_TIMESTAMP_UNITS_LOAD].realtime ?: now(CLOCK_REALTIME), | |
1734 | UID_INVALID, GID_INVALID, 0444); | |
15b9243c | 1735 | |
c6e892bc | 1736 | m->honor_device_enumeration = true; |
5ce5e1ad LP |
1737 | } |
1738 | ||
a01ba4b2 | 1739 | Manager* manager_reloading_start(Manager *m) { |
d147e2b6 | 1740 | m->n_reloading++; |
49fbe940 | 1741 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD); |
d147e2b6 ZJS |
1742 | return m; |
1743 | } | |
49fbe940 | 1744 | |
a01ba4b2 | 1745 | void manager_reloading_stopp(Manager **m) { |
d147e2b6 ZJS |
1746 | if (*m) { |
1747 | assert((*m)->n_reloading > 0); | |
1748 | (*m)->n_reloading--; | |
1749 | } | |
1750 | } | |
1751 | ||
2a7cf953 | 1752 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds, const char *root) { |
17f01ace | 1753 | int r; |
a16e1123 LP |
1754 | |
1755 | assert(m); | |
1756 | ||
a1f31f47 ZJS |
1757 | /* If we are running in test mode, we still want to run the generators, |
1758 | * but we should not touch the real generator directories. */ | |
1759 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, | |
638cece4 | 1760 | MANAGER_IS_TEST_RUN(m) ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
2a7cf953 | 1761 | root); |
e801700e | 1762 | if (r < 0) |
572986ca | 1763 | return log_error_errno(r, "Failed to initialize path lookup table: %m"); |
5a1e9937 | 1764 | |
d4ee7bd8 | 1765 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START)); |
eb523bfb LP |
1766 | r = manager_run_environment_generators(m); |
1767 | if (r >= 0) | |
1768 | r = manager_run_generators(m); | |
d4ee7bd8 | 1769 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH)); |
07719a21 LP |
1770 | if (r < 0) |
1771 | return r; | |
1772 | ||
159f1e76 | 1773 | manager_preset_all(m); |
572986ca | 1774 | |
581fef8d | 1775 | lookup_paths_log(&m->lookup_paths); |
572986ca | 1776 | |
4df7d537 ZJS |
1777 | { |
1778 | /* This block is (optionally) done with the reloading counter bumped */ | |
d7ac0952 | 1779 | _unused_ _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
4df7d537 ZJS |
1780 | |
1781 | /* If we will deserialize make sure that during enumeration this is already known, so we increase the | |
1782 | * counter here already */ | |
1783 | if (serialization) | |
1784 | reloading = manager_reloading_start(m); | |
1785 | ||
1786 | /* First, enumerate what we can from all config files */ | |
1787 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START)); | |
1788 | manager_enumerate_perpetual(m); | |
1789 | manager_enumerate(m); | |
1790 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH)); | |
1791 | ||
1792 | /* Second, deserialize if there is something to deserialize */ | |
1793 | if (serialization) { | |
1794 | r = manager_deserialize(m, serialization, fds); | |
1795 | if (r < 0) | |
1796 | return log_error_errno(r, "Deserialization failed: %m"); | |
1797 | } | |
01e10de3 | 1798 | |
4df7d537 ZJS |
1799 | /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass |
1800 | * some file descriptors to us pre-initialized. This enables socket-based activation of entire | |
1801 | * containers. */ | |
1802 | manager_distribute_fds(m, fds); | |
d86f9d52 | 1803 | |
4df7d537 ZJS |
1804 | /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */ |
1805 | r = manager_setup_notify(m); | |
1806 | if (r < 0) | |
1807 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1808 | return r; | |
d8fdc620 | 1809 | |
4df7d537 ZJS |
1810 | r = manager_setup_cgroups_agent(m); |
1811 | if (r < 0) | |
1812 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1813 | return r; | |
00d9ef85 | 1814 | |
4df7d537 ZJS |
1815 | r = manager_setup_user_lookup_fd(m); |
1816 | if (r < 0) | |
1817 | /* This shouldn't fail, except if things are really broken. */ | |
1818 | return r; | |
8559b3b7 | 1819 | |
4df7d537 ZJS |
1820 | /* Connect to the bus if we are good for it */ |
1821 | manager_setup_bus(m); | |
e3dd987c | 1822 | |
5238e957 | 1823 | /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */ |
4df7d537 ZJS |
1824 | r = bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); |
1825 | if (r < 0) | |
1826 | log_warning_errno(r, "Failed to deserialized tracked clients, ignoring: %m"); | |
1827 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
a16e1123 | 1828 | |
19d22d43 LP |
1829 | r = manager_varlink_init(m); |
1830 | if (r < 0) | |
064a5c14 | 1831 | log_warning_errno(r, "Failed to set up Varlink, ignoring: %m"); |
19d22d43 | 1832 | |
4df7d537 ZJS |
1833 | /* Third, fire things up! */ |
1834 | manager_coldplug(m); | |
3ad2afb6 | 1835 | |
4df7d537 ZJS |
1836 | /* Clean up runtime objects */ |
1837 | manager_vacuum(m); | |
71445ae7 | 1838 | |
4df7d537 ZJS |
1839 | if (serialization) |
1840 | /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the | |
1841 | * reload is finished */ | |
1842 | m->send_reloading_done = true; | |
9f611ad8 LP |
1843 | } |
1844 | ||
5ce5e1ad | 1845 | manager_ready(m); |
f0831ed2 | 1846 | |
17f01ace | 1847 | return 0; |
f50e0a01 LP |
1848 | } |
1849 | ||
50cbaba4 LP |
1850 | int manager_add_job( |
1851 | Manager *m, | |
1852 | JobType type, | |
1853 | Unit *unit, | |
1854 | JobMode mode, | |
1855 | Set *affected_jobs, | |
1856 | sd_bus_error *error, | |
1857 | Job **ret) { | |
1858 | ||
7527cb52 | 1859 | Transaction *tr; |
50cbaba4 | 1860 | int r; |
e5b5ae50 LP |
1861 | |
1862 | assert(m); | |
1863 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1864 | assert(unit); |
e5b5ae50 | 1865 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1866 | |
7358dc02 | 1867 | if (mode == JOB_ISOLATE && type != JOB_START) |
1b09b81c | 1868 | return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); |
c497c7a9 | 1869 | |
7358dc02 | 1870 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1b09b81c | 1871 | return sd_bus_error_set(error, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
2528a7a6 | 1872 | |
1f0f9f21 | 1873 | if (mode == JOB_TRIGGERING && type != JOB_STOP) |
1b09b81c | 1874 | return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "--job-mode=triggering is only valid for stop."); |
1f0f9f21 | 1875 | |
f2341e0a | 1876 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1877 | |
c6497ccb | 1878 | type = job_type_collapse(type, unit); |
e0209d83 | 1879 | |
23ade460 | 1880 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1881 | if (!tr) |
1882 | return -ENOMEM; | |
11dd41ce | 1883 | |
4bd29fe5 | 1884 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
3742095b | 1885 | IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS), |
50cbaba4 | 1886 | mode == JOB_IGNORE_DEPENDENCIES, error); |
7527cb52 MS |
1887 | if (r < 0) |
1888 | goto tr_abort; | |
c497c7a9 | 1889 | |
7527cb52 MS |
1890 | if (mode == JOB_ISOLATE) { |
1891 | r = transaction_add_isolate_jobs(tr, m); | |
1892 | if (r < 0) | |
1893 | goto tr_abort; | |
1894 | } | |
1895 | ||
1f0f9f21 KK |
1896 | if (mode == JOB_TRIGGERING) { |
1897 | r = transaction_add_triggering_jobs(tr, unit); | |
1898 | if (r < 0) | |
1899 | goto tr_abort; | |
1900 | } | |
1901 | ||
50cbaba4 | 1902 | r = transaction_activate(tr, m, mode, affected_jobs, error); |
7527cb52 MS |
1903 | if (r < 0) |
1904 | goto tr_abort; | |
e5b5ae50 | 1905 | |
f2341e0a | 1906 | log_unit_debug(unit, |
66870f90 ZJS |
1907 | "Enqueued job %s/%s as %u", unit->id, |
1908 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1909 | |
50cbaba4 LP |
1910 | if (ret) |
1911 | *ret = tr->anchor_job; | |
60918275 | 1912 | |
7527cb52 | 1913 | transaction_free(tr); |
e5b5ae50 | 1914 | return 0; |
7527cb52 MS |
1915 | |
1916 | tr_abort: | |
1917 | transaction_abort(tr); | |
1918 | transaction_free(tr); | |
1919 | return r; | |
e5b5ae50 | 1920 | } |
60918275 | 1921 | |
50cbaba4 | 1922 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, Set *affected_jobs, sd_bus_error *e, Job **ret) { |
4440b27d | 1923 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1924 | int r; |
1925 | ||
1926 | assert(m); | |
1927 | assert(type < _JOB_TYPE_MAX); | |
1928 | assert(name); | |
1929 | assert(mode < _JOB_MODE_MAX); | |
1930 | ||
c3090674 LP |
1931 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1932 | if (r < 0) | |
28247076 | 1933 | return r; |
4440b27d | 1934 | assert(unit); |
28247076 | 1935 | |
50cbaba4 | 1936 | return manager_add_job(m, type, unit, mode, affected_jobs, e, ret); |
53f18416 LP |
1937 | } |
1938 | ||
50cbaba4 | 1939 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Set *affected_jobs, Job **ret) { |
4afd3348 | 1940 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1941 | int r; |
1942 | ||
1943 | assert(m); | |
1944 | assert(type < _JOB_TYPE_MAX); | |
1945 | assert(name); | |
1946 | assert(mode < _JOB_MODE_MAX); | |
1947 | ||
50cbaba4 | 1948 | r = manager_add_job_by_name(m, type, name, mode, affected_jobs, &error, ret); |
53f18416 LP |
1949 | if (r < 0) |
1950 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1951 | ||
1952 | return r; | |
28247076 LP |
1953 | } |
1954 | ||
15d167f8 JW |
1955 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1956 | int r; | |
1957 | Transaction *tr; | |
1958 | ||
1959 | assert(m); | |
1960 | assert(unit); | |
1961 | assert(mode < _JOB_MODE_MAX); | |
1962 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1963 | ||
1964 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1965 | if (!tr) | |
1966 | return -ENOMEM; | |
1967 | ||
1968 | /* We need an anchor job */ | |
1969 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1970 | if (r < 0) | |
1971 | goto tr_abort; | |
1972 | ||
1973 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1974 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1975 | ||
50cbaba4 | 1976 | r = transaction_activate(tr, m, mode, NULL, e); |
15d167f8 JW |
1977 | if (r < 0) |
1978 | goto tr_abort; | |
1979 | ||
1980 | transaction_free(tr); | |
1981 | return 0; | |
1982 | ||
1983 | tr_abort: | |
1984 | transaction_abort(tr); | |
1985 | transaction_free(tr); | |
1986 | return r; | |
1987 | } | |
1988 | ||
60918275 LP |
1989 | Job *manager_get_job(Manager *m, uint32_t id) { |
1990 | assert(m); | |
1991 | ||
1992 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1993 | } | |
1994 | ||
87f0e418 | 1995 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1996 | assert(m); |
1997 | assert(name); | |
1998 | ||
87f0e418 | 1999 | return hashmap_get(m->units, name); |
60918275 LP |
2000 | } |
2001 | ||
19496554 MS |
2002 | static int manager_dispatch_target_deps_queue(Manager *m) { |
2003 | Unit *u; | |
19496554 MS |
2004 | int r = 0; |
2005 | ||
19496554 MS |
2006 | assert(m); |
2007 | ||
2008 | while ((u = m->target_deps_queue)) { | |
15ed3c3a LP |
2009 | _cleanup_free_ Unit **targets = NULL; |
2010 | int n_targets; | |
2011 | ||
19496554 MS |
2012 | assert(u->in_target_deps_queue); |
2013 | ||
2014 | LIST_REMOVE(target_deps_queue, u->manager->target_deps_queue, u); | |
2015 | u->in_target_deps_queue = false; | |
2016 | ||
15ed3c3a LP |
2017 | /* Take an "atomic" snapshot of dependencies here, as the call below will likely modify the |
2018 | * dependencies, and we can't have it that hash tables we iterate through are modified while | |
2019 | * we are iterating through them. */ | |
2020 | n_targets = unit_get_dependency_array(u, UNIT_ATOM_DEFAULT_TARGET_DEPENDENCIES, &targets); | |
2021 | if (n_targets < 0) | |
2022 | return n_targets; | |
19496554 | 2023 | |
15ed3c3a LP |
2024 | for (int i = 0; i < n_targets; i++) { |
2025 | r = unit_add_default_target_dependency(u, targets[i]); | |
2026 | if (r < 0) | |
2027 | return r; | |
19496554 MS |
2028 | } |
2029 | } | |
2030 | ||
2031 | return r; | |
2032 | } | |
2033 | ||
c1e1601e | 2034 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 2035 | Unit *u; |
c1e1601e | 2036 | unsigned n = 0; |
60918275 LP |
2037 | |
2038 | assert(m); | |
2039 | ||
223dabab LP |
2040 | /* Make sure we are not run recursively */ |
2041 | if (m->dispatching_load_queue) | |
c1e1601e | 2042 | return 0; |
223dabab LP |
2043 | |
2044 | m->dispatching_load_queue = true; | |
2045 | ||
87f0e418 | 2046 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
2047 | * tries to load its data until the queue is empty */ |
2048 | ||
595ed347 MS |
2049 | while ((u = m->load_queue)) { |
2050 | assert(u->in_load_queue); | |
034c6ed7 | 2051 | |
595ed347 | 2052 | unit_load(u); |
c1e1601e | 2053 | n++; |
60918275 LP |
2054 | } |
2055 | ||
223dabab | 2056 | m->dispatching_load_queue = false; |
19496554 MS |
2057 | |
2058 | /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about | |
2059 | * should be loaded and have aliases resolved */ | |
2060 | (void) manager_dispatch_target_deps_queue(m); | |
2061 | ||
c1e1601e | 2062 | return n; |
60918275 LP |
2063 | } |
2064 | ||
81be2388 | 2065 | bool manager_unit_cache_should_retry_load(Unit *u) { |
cda66772 LB |
2066 | assert(u); |
2067 | ||
81be2388 ZJS |
2068 | /* Automatic reloading from disk only applies to units which were not found sometime in the past, and |
2069 | * the not-found stub is kept pinned in the unit graph by dependencies. For units that were | |
2070 | * previously loaded, we don't do automatic reloading, and daemon-reload is necessary to update. */ | |
cda66772 LB |
2071 | if (u->load_state != UNIT_NOT_FOUND) |
2072 | return false; | |
2073 | ||
81be2388 ZJS |
2074 | /* The cache has been updated since the last time we tried to load the unit. There might be new |
2075 | * fragment paths to read. */ | |
c2911d48 | 2076 | if (u->manager->unit_cache_timestamp_hash != u->fragment_not_found_timestamp_hash) |
cda66772 | 2077 | return true; |
d904afc7 | 2078 | |
81be2388 | 2079 | /* The cache needs to be updated because there are modifications on disk. */ |
c2911d48 | 2080 | return !lookup_paths_timestamp_hash_same(&u->manager->lookup_paths, u->manager->unit_cache_timestamp_hash, NULL); |
d904afc7 LB |
2081 | } |
2082 | ||
c2756a68 LP |
2083 | int manager_load_unit_prepare( |
2084 | Manager *m, | |
2085 | const char *name, | |
2086 | const char *path, | |
718db961 | 2087 | sd_bus_error *e, |
c2756a68 LP |
2088 | Unit **_ret) { |
2089 | ||
dc409696 | 2090 | _cleanup_(unit_freep) Unit *cleanup_ret = NULL; |
87f0e418 | 2091 | Unit *ret; |
7d17cfbc | 2092 | UnitType t; |
60918275 LP |
2093 | int r; |
2094 | ||
2095 | assert(m); | |
7a6a095a | 2096 | assert(_ret); |
60918275 | 2097 | |
526e3cbb | 2098 | /* This will prepare the unit for loading, but not actually load anything from disk. */ |
0301abf4 | 2099 | |
526e3cbb | 2100 | if (path && !path_is_absolute(path)) |
718db961 | 2101 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); |
9e2f7c11 | 2102 | |
08f46856 BR |
2103 | if (!name) { |
2104 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
2105 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
2106 | * but this cannot be possible in any code path (See #6119). */ | |
2107 | assert_se(path); | |
2b6bf07d | 2108 | name = basename(path); |
08f46856 | 2109 | } |
9e2f7c11 | 2110 | |
7d17cfbc MS |
2111 | t = unit_name_to_type(name); |
2112 | ||
5d512d54 LN |
2113 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
2114 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
2115 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
2116 | ||
718db961 | 2117 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 2118 | } |
60918275 | 2119 | |
7d17cfbc MS |
2120 | ret = manager_get_unit(m, name); |
2121 | if (ret) { | |
d904afc7 LB |
2122 | /* The time-based cache allows to start new units without daemon-reload, |
2123 | * but if they are already referenced (because of dependencies or ordering) | |
2124 | * then we have to force a load of the fragment. As an optimization, check | |
2125 | * first if anything in the usual paths was modified since the last time | |
7233e91a LB |
2126 | * the cache was loaded. Also check if the last time an attempt to load the |
2127 | * unit was made was before the most recent cache refresh, so that we know | |
81be2388 | 2128 | * we need to try again — even if the cache is current, it might have been |
7233e91a LB |
2129 | * updated in a different context before we had a chance to retry loading |
2130 | * this particular unit. */ | |
81be2388 | 2131 | if (manager_unit_cache_should_retry_load(ret)) |
d904afc7 LB |
2132 | ret->load_state = UNIT_STUB; |
2133 | else { | |
2134 | *_ret = ret; | |
2135 | return 1; | |
2136 | } | |
2137 | } else { | |
2138 | ret = cleanup_ret = unit_new(m, unit_vtable[t]->object_size); | |
2139 | if (!ret) | |
2140 | return -ENOMEM; | |
034c6ed7 | 2141 | } |
60918275 | 2142 | |
7d17cfbc | 2143 | if (path) { |
d904afc7 LB |
2144 | r = free_and_strdup(&ret->fragment_path, path); |
2145 | if (r < 0) | |
2146 | return r; | |
7d17cfbc | 2147 | } |
0301abf4 | 2148 | |
1058cbf2 | 2149 | r = unit_add_name(ret, name); |
dc409696 | 2150 | if (r < 0) |
1ffba6fe | 2151 | return r; |
60918275 | 2152 | |
87f0e418 | 2153 | unit_add_to_load_queue(ret); |
c1e1601e | 2154 | unit_add_to_dbus_queue(ret); |
949061f0 | 2155 | unit_add_to_gc_queue(ret); |
c1e1601e | 2156 | |
7a6a095a | 2157 | *_ret = ret; |
dc409696 | 2158 | cleanup_ret = NULL; |
db06e3b6 LP |
2159 | |
2160 | return 0; | |
2161 | } | |
2162 | ||
c2756a68 LP |
2163 | int manager_load_unit( |
2164 | Manager *m, | |
2165 | const char *name, | |
2166 | const char *path, | |
718db961 | 2167 | sd_bus_error *e, |
c2756a68 LP |
2168 | Unit **_ret) { |
2169 | ||
db06e3b6 LP |
2170 | int r; |
2171 | ||
2172 | assert(m); | |
7a6a095a | 2173 | assert(_ret); |
db06e3b6 LP |
2174 | |
2175 | /* This will load the service information files, but not actually | |
2176 | * start any services or anything. */ | |
2177 | ||
c3090674 LP |
2178 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
2179 | if (r != 0) | |
db06e3b6 LP |
2180 | return r; |
2181 | ||
f50e0a01 | 2182 | manager_dispatch_load_queue(m); |
60918275 | 2183 | |
7a6a095a | 2184 | *_ret = unit_follow_merge(*_ret); |
4109ede7 ZJS |
2185 | return 0; |
2186 | } | |
2187 | ||
2188 | int manager_load_startable_unit_or_warn( | |
2189 | Manager *m, | |
2190 | const char *name, | |
2191 | const char *path, | |
2192 | Unit **ret) { | |
2193 | ||
2194 | /* Load a unit, make sure it loaded fully and is not masked. */ | |
2195 | ||
2196 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2197 | Unit *unit; | |
2198 | int r; | |
2199 | ||
2200 | r = manager_load_unit(m, name, path, &error, &unit); | |
2201 | if (r < 0) | |
2202 | return log_error_errno(r, "Failed to load %s %s: %s", | |
8ace1db7 | 2203 | name ? "unit" : "unit file", name ?: path, |
4109ede7 | 2204 | bus_error_message(&error, r)); |
8ace1db7 LP |
2205 | |
2206 | r = bus_unit_validate_load_state(unit, &error); | |
2207 | if (r < 0) | |
2208 | return log_error_errno(r, "%s", bus_error_message(&error, r)); | |
9e2f7c11 | 2209 | |
4109ede7 | 2210 | *ret = unit; |
60918275 LP |
2211 | return 0; |
2212 | } | |
a66d02c3 | 2213 | |
7fad411c LP |
2214 | void manager_clear_jobs(Manager *m) { |
2215 | Job *j; | |
2216 | ||
2217 | assert(m); | |
2218 | ||
7fad411c | 2219 | while ((j = hashmap_first(m->jobs))) |
5273510e | 2220 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 2221 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 2222 | } |
83c60c9f | 2223 | |
f75f613d FB |
2224 | void manager_unwatch_pid(Manager *m, pid_t pid) { |
2225 | assert(m); | |
2226 | ||
2227 | /* First let's drop the unit keyed as "pid". */ | |
2228 | (void) hashmap_remove(m->watch_pids, PID_TO_PTR(pid)); | |
2229 | ||
2230 | /* Then, let's also drop the array keyed by -pid. */ | |
2231 | free(hashmap_remove(m->watch_pids, PID_TO_PTR(-pid))); | |
2232 | } | |
2233 | ||
752b5905 LP |
2234 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
2235 | Manager *m = userdata; | |
83c60c9f | 2236 | Job *j; |
034c6ed7 | 2237 | |
752b5905 LP |
2238 | assert(source); |
2239 | assert(m); | |
9152c765 | 2240 | |
da8e1782 | 2241 | while ((j = prioq_peek(m->run_queue))) { |
ac1135be | 2242 | assert(j->installed); |
034c6ed7 LP |
2243 | assert(j->in_run_queue); |
2244 | ||
6e64994d | 2245 | (void) job_run_and_invalidate(j); |
9152c765 | 2246 | } |
034c6ed7 | 2247 | |
a0b64226 | 2248 | if (m->n_running_jobs > 0) |
03b717a3 MS |
2249 | manager_watch_jobs_in_progress(m); |
2250 | ||
31a7eb86 ZJS |
2251 | if (m->n_on_console > 0) |
2252 | manager_watch_idle_pipe(m); | |
2253 | ||
752b5905 | 2254 | return 1; |
c1e1601e LP |
2255 | } |
2256 | ||
b0c4b282 LP |
2257 | void manager_trigger_run_queue(Manager *m) { |
2258 | int r; | |
2259 | ||
2260 | assert(m); | |
2261 | ||
2262 | r = sd_event_source_set_enabled( | |
2263 | m->run_queue_event_source, | |
2264 | prioq_isempty(m->run_queue) ? SD_EVENT_OFF : SD_EVENT_ONESHOT); | |
2265 | if (r < 0) | |
2266 | log_warning_errno(r, "Failed to enable job run queue event source, ignoring: %m"); | |
2267 | } | |
2268 | ||
9588bc32 | 2269 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
e0a08581 | 2270 | unsigned n = 0, budget; |
595ed347 | 2271 | Unit *u; |
e0a08581 | 2272 | Job *j; |
c1e1601e LP |
2273 | |
2274 | assert(m); | |
2275 | ||
b8d381c4 LP |
2276 | /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly |
2277 | * as we can. There's no point in throttling generation of signals in that case. */ | |
2278 | if (MANAGER_IS_RELOADING(m) || m->send_reloading_done || m->pending_reload_message) | |
f5fbe71d | 2279 | budget = UINT_MAX; /* infinite budget in this case */ |
b8d381c4 LP |
2280 | else { |
2281 | /* Anything to do at all? */ | |
2282 | if (!m->dbus_unit_queue && !m->dbus_job_queue) | |
2283 | return 0; | |
2284 | ||
2285 | /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's | |
2286 | * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */ | |
2287 | if (manager_bus_n_queued_write(m) > MANAGER_BUS_BUSY_THRESHOLD) | |
2288 | return 0; | |
2289 | ||
2290 | /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't | |
2291 | * overly full before this call we shouldn't increase it in size too wildly in one step, and we | |
2292 | * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of | |
2293 | * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message, | |
5238e957 BB |
2294 | * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to |
2295 | * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct | |
b8d381c4 LP |
2296 | * connections it will be counted five times. This difference in counting ("references" |
2297 | * vs. "instances") is primarily a result of the fact that it's easier to implement it this way, | |
2298 | * however it also reflects the thinking that the "threshold" should put a limit on used queue memory, | |
2299 | * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is | |
2300 | * currently chosen much higher than the "budget". */ | |
2301 | budget = MANAGER_BUS_MESSAGE_BUDGET; | |
2302 | } | |
e0a08581 | 2303 | |
b8d381c4 | 2304 | while (budget != 0 && (u = m->dbus_unit_queue)) { |
e0a08581 | 2305 | |
595ed347 | 2306 | assert(u->in_dbus_queue); |
c1e1601e | 2307 | |
595ed347 | 2308 | bus_unit_send_change_signal(u); |
b8d381c4 LP |
2309 | n++; |
2310 | ||
f5fbe71d | 2311 | if (budget != UINT_MAX) |
b8d381c4 | 2312 | budget--; |
c1e1601e LP |
2313 | } |
2314 | ||
b8d381c4 | 2315 | while (budget != 0 && (j = m->dbus_job_queue)) { |
c1e1601e LP |
2316 | assert(j->in_dbus_queue); |
2317 | ||
2318 | bus_job_send_change_signal(j); | |
b8d381c4 LP |
2319 | n++; |
2320 | ||
f5fbe71d | 2321 | if (budget != UINT_MAX) |
b8d381c4 | 2322 | budget--; |
c1e1601e LP |
2323 | } |
2324 | ||
b8d381c4 | 2325 | if (m->send_reloading_done) { |
71445ae7 | 2326 | m->send_reloading_done = false; |
718db961 | 2327 | bus_manager_send_reloading(m, false); |
b8d381c4 | 2328 | n++; |
71445ae7 LP |
2329 | } |
2330 | ||
b8d381c4 | 2331 | if (m->pending_reload_message) { |
209de525 | 2332 | bus_send_pending_reload_message(m); |
e0a08581 LP |
2333 | n++; |
2334 | } | |
718db961 | 2335 | |
c1e1601e | 2336 | return n; |
9152c765 LP |
2337 | } |
2338 | ||
d8fdc620 LP |
2339 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2340 | Manager *m = userdata; | |
60473f0c | 2341 | char buf[PATH_MAX]; |
d8fdc620 LP |
2342 | ssize_t n; |
2343 | ||
2344 | n = recv(fd, buf, sizeof(buf), 0); | |
2345 | if (n < 0) | |
2346 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
2347 | if (n == 0) { | |
2348 | log_error("Got zero-length cgroups agent message, ignoring."); | |
2349 | return 0; | |
2350 | } | |
2351 | if ((size_t) n >= sizeof(buf)) { | |
2352 | log_error("Got overly long cgroups agent message, ignoring."); | |
2353 | return 0; | |
2354 | } | |
2355 | ||
2356 | if (memchr(buf, 0, n)) { | |
2357 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
2358 | return 0; | |
2359 | } | |
2360 | buf[n] = 0; | |
2361 | ||
2362 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 2363 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
2364 | |
2365 | return 0; | |
2366 | } | |
2367 | ||
5151b4cc | 2368 | static bool manager_process_barrier_fd(char * const *tags, FDSet *fds) { |
4f07ddfa KKD |
2369 | |
2370 | /* nothing else must be sent when using BARRIER=1 */ | |
5151b4cc BR |
2371 | if (strv_contains(tags, "BARRIER=1")) { |
2372 | if (strv_length(tags) == 1) { | |
2373 | if (fdset_size(fds) != 1) | |
2374 | log_warning("Got incorrect number of fds with BARRIER=1, closing them."); | |
2375 | } else | |
2376 | log_warning("Extra notification messages sent with BARRIER=1, ignoring everything."); | |
2377 | ||
2378 | /* Drop the message if BARRIER=1 was found */ | |
4f07ddfa | 2379 | return true; |
5151b4cc | 2380 | } |
4f07ddfa KKD |
2381 | |
2382 | return false; | |
2383 | } | |
2384 | ||
db256aab LP |
2385 | static void manager_invoke_notify_message( |
2386 | Manager *m, | |
2387 | Unit *u, | |
2388 | const struct ucred *ucred, | |
5151b4cc | 2389 | char * const *tags, |
db256aab LP |
2390 | FDSet *fds) { |
2391 | ||
5ba6985b LP |
2392 | assert(m); |
2393 | assert(u); | |
db256aab | 2394 | assert(ucred); |
5151b4cc | 2395 | assert(tags); |
5ba6985b | 2396 | |
62a76913 | 2397 | if (u->notifygen == m->notifygen) /* Already invoked on this same unit in this same iteration? */ |
5ba6985b | 2398 | return; |
62a76913 LP |
2399 | u->notifygen = m->notifygen; |
2400 | ||
5151b4cc | 2401 | if (UNIT_VTABLE(u)->notify_message) |
db256aab | 2402 | UNIT_VTABLE(u)->notify_message(u, ucred, tags, fds); |
62a76913 | 2403 | |
5151b4cc BR |
2404 | else if (DEBUG_LOGGING) { |
2405 | _cleanup_free_ char *buf = NULL, *x = NULL, *y = NULL; | |
a86b7675 | 2406 | |
5151b4cc BR |
2407 | buf = strv_join(tags, ", "); |
2408 | if (buf) | |
2409 | x = ellipsize(buf, 20, 90); | |
a86b7675 | 2410 | if (x) |
da5fb861 LP |
2411 | y = cescape(x); |
2412 | ||
a86b7675 ZJS |
2413 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); |
2414 | } | |
5ba6985b LP |
2415 | } |
2416 | ||
718db961 | 2417 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 2418 | |
b215b0ed | 2419 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 2420 | Manager *m = userdata; |
b215b0ed DH |
2421 | char buf[NOTIFY_BUFFER_MAX+1]; |
2422 | struct iovec iovec = { | |
2423 | .iov_base = buf, | |
2424 | .iov_len = sizeof(buf)-1, | |
2425 | }; | |
fb29cdbe LP |
2426 | CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred)) + |
2427 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)) control; | |
b215b0ed DH |
2428 | struct msghdr msghdr = { |
2429 | .msg_iov = &iovec, | |
2430 | .msg_iovlen = 1, | |
2431 | .msg_control = &control, | |
2432 | .msg_controllen = sizeof(control), | |
2433 | }; | |
2434 | ||
2435 | struct cmsghdr *cmsg; | |
2436 | struct ucred *ucred = NULL; | |
62a76913 | 2437 | _cleanup_free_ Unit **array_copy = NULL; |
5151b4cc | 2438 | _cleanup_strv_free_ char **tags = NULL; |
62a76913 | 2439 | Unit *u1, *u2, **array; |
b215b0ed | 2440 | int r, *fd_array = NULL; |
da6053d0 | 2441 | size_t n_fds = 0; |
62a76913 | 2442 | bool found = false; |
8c47c732 LP |
2443 | ssize_t n; |
2444 | ||
2445 | assert(m); | |
718db961 LP |
2446 | assert(m->notify_fd == fd); |
2447 | ||
2448 | if (revents != EPOLLIN) { | |
2449 | log_warning("Got unexpected poll event for notify fd."); | |
2450 | return 0; | |
2451 | } | |
8c47c732 | 2452 | |
3691bcf3 | 2453 | n = recvmsg_safe(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
8add30a0 YW |
2454 | if (n < 0) { |
2455 | if (ERRNO_IS_TRANSIENT(n)) | |
2456 | return 0; /* Spurious wakeup, try again */ | |
2457 | if (n == -EXFULL) { | |
2458 | log_warning("Got message with truncated control data (too many fds sent?), ignoring."); | |
2459 | return 0; | |
2460 | } | |
3691bcf3 LP |
2461 | /* If this is any other, real error, then let's stop processing this socket. This of course |
2462 | * means we won't take notification messages anymore, but that's still better than busy | |
2463 | * looping around this: being woken up over and over again but being unable to actually read | |
2464 | * the message off the socket. */ | |
2465 | return log_error_errno(n, "Failed to receive notification message: %m"); | |
8add30a0 | 2466 | } |
a354329f | 2467 | |
b215b0ed DH |
2468 | CMSG_FOREACH(cmsg, &msghdr) { |
2469 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 2470 | |
3691bcf3 | 2471 | assert(!fd_array); |
b215b0ed DH |
2472 | fd_array = (int*) CMSG_DATA(cmsg); |
2473 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 2474 | |
b215b0ed DH |
2475 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
2476 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
2477 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 2478 | |
3691bcf3 | 2479 | assert(!ucred); |
b215b0ed | 2480 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 2481 | } |
b215b0ed | 2482 | } |
a354329f | 2483 | |
b215b0ed DH |
2484 | if (n_fds > 0) { |
2485 | assert(fd_array); | |
a354329f | 2486 | |
b215b0ed DH |
2487 | r = fdset_new_array(&fds, fd_array, n_fds); |
2488 | if (r < 0) { | |
2489 | close_many(fd_array, n_fds); | |
9987750e FB |
2490 | log_oom(); |
2491 | return 0; | |
a354329f | 2492 | } |
b215b0ed | 2493 | } |
8c47c732 | 2494 | |
15e23e8c | 2495 | if (!ucred || !pid_is_valid(ucred->pid)) { |
b215b0ed DH |
2496 | log_warning("Received notify message without valid credentials. Ignoring."); |
2497 | return 0; | |
2498 | } | |
8c47c732 | 2499 | |
045a3d59 | 2500 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
2501 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
2502 | return 0; | |
2503 | } | |
8c47c732 | 2504 | |
875ca88d LP |
2505 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
2506 | * trailing NUL byte in the message, but don't expect it. */ | |
2507 | if (n > 1 && memchr(buf, 0, n-1)) { | |
2508 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
2509 | return 0; | |
2510 | } | |
2511 | ||
5151b4cc | 2512 | /* Make sure it's NUL-terminated, then parse it to obtain the tags list */ |
b215b0ed | 2513 | buf[n] = 0; |
5151b4cc BR |
2514 | tags = strv_split_newlines(buf); |
2515 | if (!tags) { | |
2516 | log_oom(); | |
2517 | return 0; | |
2518 | } | |
8c47c732 | 2519 | |
4f07ddfa | 2520 | /* possibly a barrier fd, let's see */ |
5151b4cc | 2521 | if (manager_process_barrier_fd(tags, fds)) |
4f07ddfa KKD |
2522 | return 0; |
2523 | ||
62a76913 LP |
2524 | /* Increase the generation counter used for filtering out duplicate unit invocations. */ |
2525 | m->notifygen++; | |
2526 | ||
2527 | /* Notify every unit that might be interested, which might be multiple. */ | |
b215b0ed | 2528 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); |
62a76913 LP |
2529 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(ucred->pid)); |
2530 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-ucred->pid)); | |
2531 | if (array) { | |
2532 | size_t k = 0; | |
5ba6985b | 2533 | |
62a76913 LP |
2534 | while (array[k]) |
2535 | k++; | |
5ba6985b | 2536 | |
62a76913 LP |
2537 | array_copy = newdup(Unit*, array, k+1); |
2538 | if (!array_copy) | |
2539 | log_oom(); | |
2540 | } | |
2541 | /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units | |
2542 | * make sure we only invoke each unit's handler once. */ | |
2543 | if (u1) { | |
5151b4cc | 2544 | manager_invoke_notify_message(m, u1, ucred, tags, fds); |
62a76913 LP |
2545 | found = true; |
2546 | } | |
2547 | if (u2) { | |
5151b4cc | 2548 | manager_invoke_notify_message(m, u2, ucred, tags, fds); |
62a76913 LP |
2549 | found = true; |
2550 | } | |
2551 | if (array_copy) | |
2552 | for (size_t i = 0; array_copy[i]; i++) { | |
5151b4cc | 2553 | manager_invoke_notify_message(m, array_copy[i], ucred, tags, fds); |
62a76913 LP |
2554 | found = true; |
2555 | } | |
8c47c732 | 2556 | |
62a76913 LP |
2557 | if (!found) |
2558 | log_warning("Cannot find unit for notify message of PID "PID_FMT", ignoring.", ucred->pid); | |
a354329f | 2559 | |
b215b0ed | 2560 | if (fdset_size(fds) > 0) |
5fd2c135 | 2561 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2562 | |
2563 | return 0; | |
2564 | } | |
2565 | ||
62a76913 LP |
2566 | static void manager_invoke_sigchld_event( |
2567 | Manager *m, | |
2568 | Unit *u, | |
2569 | const siginfo_t *si) { | |
36f20ae3 | 2570 | |
5ba6985b LP |
2571 | assert(m); |
2572 | assert(u); | |
2573 | assert(si); | |
2574 | ||
62a76913 LP |
2575 | /* Already invoked the handler of this unit in this iteration? Then don't process this again */ |
2576 | if (u->sigchldgen == m->sigchldgen) | |
2577 | return; | |
2578 | u->sigchldgen = m->sigchldgen; | |
5ba6985b | 2579 | |
62a76913 | 2580 | log_unit_debug(u, "Child "PID_FMT" belongs to %s.", si->si_pid, u->id); |
5ba6985b | 2581 | unit_unwatch_pid(u, si->si_pid); |
e57051f5 | 2582 | |
62a76913 LP |
2583 | if (UNIT_VTABLE(u)->sigchld_event) |
2584 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
5ba6985b LP |
2585 | } |
2586 | ||
575b300b LP |
2587 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata) { |
2588 | Manager *m = userdata; | |
2589 | siginfo_t si = {}; | |
2590 | int r; | |
2591 | ||
2592 | assert(source); | |
9152c765 LP |
2593 | assert(m); |
2594 | ||
0a51b45c | 2595 | /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it |
575b300b | 2596 | * while it is a zombie. */ |
9152c765 | 2597 | |
575b300b | 2598 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { |
acbb0225 | 2599 | |
8afabc50 AJ |
2600 | if (errno != ECHILD) |
2601 | log_error_errno(errno, "Failed to peek for child with waitid(), ignoring: %m"); | |
acbb0225 | 2602 | |
8afabc50 | 2603 | goto turn_off; |
575b300b | 2604 | } |
4112df16 | 2605 | |
575b300b LP |
2606 | if (si.si_pid <= 0) |
2607 | goto turn_off; | |
2608 | ||
2609 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { | |
62a76913 | 2610 | _cleanup_free_ Unit **array_copy = NULL; |
575b300b | 2611 | _cleanup_free_ char *name = NULL; |
62a76913 | 2612 | Unit *u1, *u2, **array; |
575b300b LP |
2613 | |
2614 | (void) get_process_comm(si.si_pid, &name); | |
2615 | ||
2616 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
2617 | si.si_pid, strna(name), | |
2618 | sigchld_code_to_string(si.si_code), | |
2619 | si.si_status, | |
2620 | strna(si.si_code == CLD_EXITED | |
2621 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2622 | : signal_to_string(si.si_status))); | |
2623 | ||
62a76913 LP |
2624 | /* Increase the generation counter used for filtering out duplicate unit invocations */ |
2625 | m->sigchldgen++; | |
2626 | ||
2627 | /* And now figure out the unit this belongs to, it might be multiple... */ | |
575b300b | 2628 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
62a76913 LP |
2629 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(si.si_pid)); |
2630 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-si.si_pid)); | |
2631 | if (array) { | |
2632 | size_t n = 0; | |
2633 | ||
5238e957 | 2634 | /* Count how many entries the array has */ |
62a76913 LP |
2635 | while (array[n]) |
2636 | n++; | |
2637 | ||
2638 | /* Make a copy of the array so that we don't trip up on the array changing beneath us */ | |
2639 | array_copy = newdup(Unit*, array, n+1); | |
2640 | if (!array_copy) | |
2641 | log_oom(); | |
2642 | } | |
2643 | ||
2644 | /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but | |
2645 | * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for | |
2646 | * each iteration. */ | |
2ba6ae6b ZJS |
2647 | if (u1) { |
2648 | /* We check for oom condition, in case we got SIGCHLD before the oom notification. | |
2649 | * We only do this for the cgroup the PID belonged to. */ | |
2650 | (void) unit_check_oom(u1); | |
2651 | ||
fe8d22fb AZ |
2652 | /* This only logs for now. In the future when the interface for kills/notifications |
2653 | * is more stable we can extend service results table similar to how kernel oom kills | |
2654 | * are managed. */ | |
2655 | (void) unit_check_oomd_kill(u1); | |
2656 | ||
62a76913 | 2657 | manager_invoke_sigchld_event(m, u1, &si); |
2ba6ae6b | 2658 | } |
62a76913 LP |
2659 | if (u2) |
2660 | manager_invoke_sigchld_event(m, u2, &si); | |
2661 | if (array_copy) | |
2662 | for (size_t i = 0; array_copy[i]; i++) | |
2663 | manager_invoke_sigchld_event(m, array_copy[i], &si); | |
575b300b | 2664 | } |
9152c765 | 2665 | |
575b300b LP |
2666 | /* And now, we actually reap the zombie. */ |
2667 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2668 | log_error_errno(errno, "Failed to dequeue child, ignoring: %m"); | |
2669 | return 0; | |
2670 | } | |
9152c765 | 2671 | |
575b300b | 2672 | return 0; |
8c47c732 | 2673 | |
575b300b LP |
2674 | turn_off: |
2675 | /* All children processed for now, turn off event source */ | |
4112df16 | 2676 | |
575b300b LP |
2677 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); |
2678 | if (r < 0) | |
2679 | return log_error_errno(r, "Failed to disable SIGCHLD event source: %m"); | |
9152c765 LP |
2680 | |
2681 | return 0; | |
2682 | } | |
2683 | ||
5f968096 ZJS |
2684 | static void manager_start_special(Manager *m, const char *name, JobMode mode) { |
2685 | Job *job; | |
398ef8ba | 2686 | |
5f968096 ZJS |
2687 | if (manager_add_job_by_name_and_warn(m, JOB_START, name, mode, NULL, &job) < 0) |
2688 | return; | |
1e001f52 | 2689 | |
5f968096 ZJS |
2690 | const char *s = unit_status_string(job->unit, NULL); |
2691 | ||
2692 | log_info("Activating special unit %s...", s); | |
3889fc6f ZJS |
2693 | |
2694 | sd_notifyf(false, | |
2695 | "STATUS=Activating special unit %s...", s); | |
2696 | m->status_ready = false; | |
28247076 LP |
2697 | } |
2698 | ||
24dd31c1 LN |
2699 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2700 | /* If the user presses C-A-D more than | |
2701 | * 7 times within 2s, we reboot/shutdown immediately, | |
2702 | * unless it was disabled in system.conf */ | |
2703 | ||
7994ac1d | 2704 | if (ratelimit_below(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
5f968096 | 2705 | manager_start_special(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 | 2706 | else |
7af67e9a | 2707 | emergency_action(m, m->cad_burst_action, EMERGENCY_ACTION_WARN, NULL, -1, |
ae8c7939 | 2708 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); |
24dd31c1 LN |
2709 | } |
2710 | ||
718db961 LP |
2711 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2712 | Manager *m = userdata; | |
9152c765 LP |
2713 | ssize_t n; |
2714 | struct signalfd_siginfo sfsi; | |
dacd6cee | 2715 | int r; |
9152c765 LP |
2716 | |
2717 | assert(m); | |
718db961 LP |
2718 | assert(m->signal_fd == fd); |
2719 | ||
2720 | if (revents != EPOLLIN) { | |
2721 | log_warning("Got unexpected events from signal file descriptor."); | |
2722 | return 0; | |
2723 | } | |
9152c765 | 2724 | |
575b300b | 2725 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
8add30a0 YW |
2726 | if (n < 0) { |
2727 | if (ERRNO_IS_TRANSIENT(errno)) | |
575b300b | 2728 | return 0; |
9152c765 | 2729 | |
575b300b LP |
2730 | /* We return an error here, which will kill this handler, |
2731 | * to avoid a busy loop on read error. */ | |
2732 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
2733 | } | |
8add30a0 YW |
2734 | if (n != sizeof(sfsi)) { |
2735 | log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n); | |
2736 | return 0; | |
2737 | } | |
9152c765 | 2738 | |
575b300b LP |
2739 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
2740 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) | |
2741 | ? LOG_DEBUG : LOG_INFO, | |
2742 | &sfsi); | |
1e001f52 | 2743 | |
575b300b | 2744 | switch (sfsi.ssi_signo) { |
b9cd2ec1 | 2745 | |
575b300b LP |
2746 | case SIGCHLD: |
2747 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
2748 | if (r < 0) | |
8afabc50 | 2749 | log_warning_errno(r, "Failed to enable SIGCHLD event source, ignoring: %m"); |
b9cd2ec1 | 2750 | |
575b300b | 2751 | break; |
84e9af1e | 2752 | |
575b300b LP |
2753 | case SIGTERM: |
2754 | if (MANAGER_IS_SYSTEM(m)) { | |
ba0c7754 | 2755 | /* This is for compatibility with the original sysvinit */ |
c52b19d6 LP |
2756 | if (verify_run_space_and_log("Refusing to reexecute") < 0) |
2757 | break; | |
2758 | ||
2759 | m->objective = MANAGER_REEXECUTE; | |
a1b256b0 | 2760 | break; |
575b300b | 2761 | } |
84e9af1e | 2762 | |
575b300b LP |
2763 | _fallthrough_; |
2764 | case SIGINT: | |
2765 | if (MANAGER_IS_SYSTEM(m)) | |
2766 | manager_handle_ctrl_alt_del(m); | |
2767 | else | |
5f968096 | 2768 | manager_start_special(m, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY); |
575b300b | 2769 | break; |
84e9af1e | 2770 | |
575b300b | 2771 | case SIGWINCH: |
ba0c7754 | 2772 | /* This is a nop on non-init */ |
575b300b | 2773 | if (MANAGER_IS_SYSTEM(m)) |
5f968096 | 2774 | manager_start_special(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2775 | |
575b300b | 2776 | break; |
84e9af1e | 2777 | |
575b300b | 2778 | case SIGPWR: |
ba0c7754 | 2779 | /* This is a nop on non-init */ |
575b300b | 2780 | if (MANAGER_IS_SYSTEM(m)) |
5f968096 | 2781 | manager_start_special(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
6632c602 | 2782 | |
575b300b | 2783 | break; |
57ee42ce | 2784 | |
8559b3b7 | 2785 | case SIGUSR1: |
8559b3b7 | 2786 | if (manager_dbus_is_running(m, false)) { |
575b300b | 2787 | log_info("Trying to reconnect to bus..."); |
575b300b | 2788 | |
8559b3b7 LP |
2789 | (void) bus_init_api(m); |
2790 | ||
2791 | if (MANAGER_IS_SYSTEM(m)) | |
2792 | (void) bus_init_system(m); | |
5f968096 ZJS |
2793 | } else |
2794 | manager_start_special(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); | |
57ee42ce | 2795 | |
575b300b | 2796 | break; |
575b300b LP |
2797 | |
2798 | case SIGUSR2: { | |
2799 | _cleanup_free_ char *dump = NULL; | |
2800 | ||
2801 | r = manager_get_dump_string(m, &dump); | |
2802 | if (r < 0) { | |
2803 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); | |
57ee42ce LP |
2804 | break; |
2805 | } | |
2806 | ||
575b300b LP |
2807 | log_dump(LOG_INFO, dump); |
2808 | break; | |
2809 | } | |
2149e37c | 2810 | |
575b300b | 2811 | case SIGHUP: |
c52b19d6 LP |
2812 | if (verify_run_space_and_log("Refusing to reload") < 0) |
2813 | break; | |
2814 | ||
2815 | m->objective = MANAGER_RELOAD; | |
575b300b LP |
2816 | break; |
2817 | ||
2818 | default: { | |
2819 | ||
2820 | /* Starting SIGRTMIN+0 */ | |
2821 | static const struct { | |
2822 | const char *target; | |
2823 | JobMode mode; | |
2824 | } target_table[] = { | |
2825 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2826 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2827 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2828 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2829 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2830 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2831 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2832 | }; | |
2833 | ||
2834 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
af41e508 | 2835 | static const ManagerObjective objective_table[] = { |
575b300b LP |
2836 | [0] = MANAGER_HALT, |
2837 | [1] = MANAGER_POWEROFF, | |
2838 | [2] = MANAGER_REBOOT, | |
2839 | [3] = MANAGER_KEXEC, | |
2840 | }; | |
b2cdc666 | 2841 | |
575b300b LP |
2842 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && |
2843 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
2844 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
5f968096 | 2845 | manager_start_special(m, target_table[idx].target, target_table[idx].mode); |
1005d14f | 2846 | break; |
2149e37c | 2847 | } |
1005d14f | 2848 | |
575b300b | 2849 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
af41e508 LP |
2850 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(objective_table)) { |
2851 | m->objective = objective_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
575b300b LP |
2852 | break; |
2853 | } | |
2854 | ||
2855 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
2856 | ||
2857 | case 20: | |
43bba15a | 2858 | manager_override_show_status(m, SHOW_STATUS_YES, "signal"); |
a16e1123 LP |
2859 | break; |
2860 | ||
575b300b | 2861 | case 21: |
43bba15a | 2862 | manager_override_show_status(m, SHOW_STATUS_NO, "signal"); |
575b300b | 2863 | break; |
7d793605 | 2864 | |
575b300b | 2865 | case 22: |
a6ecbf83 | 2866 | manager_override_log_level(m, LOG_DEBUG); |
575b300b LP |
2867 | break; |
2868 | ||
2869 | case 23: | |
a6ecbf83 | 2870 | manager_restore_original_log_level(m); |
575b300b | 2871 | break; |
0003d1ab | 2872 | |
575b300b LP |
2873 | case 24: |
2874 | if (MANAGER_IS_USER(m)) { | |
af41e508 | 2875 | m->objective = MANAGER_EXIT; |
575b300b | 2876 | return 0; |
0658666b | 2877 | } |
9152c765 | 2878 | |
575b300b LP |
2879 | /* This is a nop on init */ |
2880 | break; | |
2881 | ||
463aef23 FB |
2882 | case 25: |
2883 | m->objective = MANAGER_REEXECUTE; | |
2884 | break; | |
2885 | ||
575b300b LP |
2886 | case 26: |
2887 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
bda7d78b | 2888 | manager_restore_original_log_target(m); |
575b300b LP |
2889 | break; |
2890 | ||
2891 | case 27: | |
bda7d78b | 2892 | manager_override_log_target(m, LOG_TARGET_CONSOLE); |
575b300b LP |
2893 | break; |
2894 | ||
2895 | case 28: | |
bda7d78b | 2896 | manager_override_log_target(m, LOG_TARGET_KMSG); |
575b300b LP |
2897 | break; |
2898 | ||
2899 | default: | |
2900 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
2901 | } | |
2902 | }} | |
034c6ed7 LP |
2903 | |
2904 | return 0; | |
2905 | } | |
2906 | ||
718db961 LP |
2907 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2908 | Manager *m = userdata; | |
718db961 | 2909 | Unit *u; |
034c6ed7 LP |
2910 | |
2911 | assert(m); | |
718db961 | 2912 | assert(m->time_change_fd == fd); |
034c6ed7 | 2913 | |
a80c1575 | 2914 | log_struct(LOG_DEBUG, |
2b044526 | 2915 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
a1230ff9 | 2916 | LOG_MESSAGE("Time has been changed")); |
034c6ed7 | 2917 | |
718db961 | 2918 | /* Restart the watch */ |
7feedd18 | 2919 | (void) manager_setup_time_change(m); |
4e434314 | 2920 | |
90e74a66 | 2921 | HASHMAP_FOREACH(u, m->units) |
718db961 LP |
2922 | if (UNIT_VTABLE(u)->time_change) |
2923 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2924 | |
718db961 LP |
2925 | return 0; |
2926 | } | |
ea430986 | 2927 | |
bbf5fd8e LP |
2928 | static int manager_dispatch_timezone_change( |
2929 | sd_event_source *source, | |
2930 | const struct inotify_event *e, | |
2931 | void *userdata) { | |
2932 | ||
2933 | Manager *m = userdata; | |
2934 | int changed; | |
bbf5fd8e LP |
2935 | Unit *u; |
2936 | ||
2937 | assert(m); | |
2938 | ||
2939 | log_debug("inotify event for /etc/localtime"); | |
2940 | ||
2941 | changed = manager_read_timezone_stat(m); | |
f20db199 | 2942 | if (changed <= 0) |
bbf5fd8e | 2943 | return changed; |
bbf5fd8e LP |
2944 | |
2945 | /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */ | |
2946 | (void) manager_setup_timezone_change(m); | |
2947 | ||
2948 | /* Read the new timezone */ | |
2949 | tzset(); | |
2950 | ||
2951 | log_debug("Timezone has been changed (now: %s).", tzname[daylight]); | |
2952 | ||
90e74a66 | 2953 | HASHMAP_FOREACH(u, m->units) |
bbf5fd8e LP |
2954 | if (UNIT_VTABLE(u)->timezone_change) |
2955 | UNIT_VTABLE(u)->timezone_change(u); | |
2956 | ||
2957 | return 0; | |
2958 | } | |
2959 | ||
718db961 LP |
2960 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2961 | Manager *m = userdata; | |
8742514c | 2962 | |
718db961 LP |
2963 | assert(m); |
2964 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2965 | |
5a69973f LP |
2966 | /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's |
2967 | * now turn off any further console output if there's at least one service that needs console access, so that | |
2968 | * from now on our own output should not spill into that service's output anymore. After all, we support | |
2969 | * Type=idle only to beautify console output and it generally is set on services that want to own the console | |
2970 | * exclusively without our interference. */ | |
718db961 | 2971 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2972 | |
5a69973f LP |
2973 | /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer |
2974 | * by closing the pipes towards them, which is what they are waiting for. */ | |
718db961 | 2975 | manager_close_idle_pipe(m); |
03b717a3 | 2976 | |
718db961 LP |
2977 | return 0; |
2978 | } | |
31a7eb86 | 2979 | |
718db961 LP |
2980 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2981 | Manager *m = userdata; | |
fd08a840 | 2982 | int r; |
31a7eb86 | 2983 | |
718db961 | 2984 | assert(m); |
fd08a840 | 2985 | assert(source); |
9152c765 | 2986 | |
718db961 | 2987 | manager_print_jobs_in_progress(m); |
fd08a840 | 2988 | |
39cf0351 | 2989 | r = sd_event_source_set_time_relative(source, JOBS_IN_PROGRESS_PERIOD_USEC); |
fd08a840 ZJS |
2990 | if (r < 0) |
2991 | return r; | |
2992 | ||
2993 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2994 | } |
2995 | ||
2996 | int manager_loop(Manager *m) { | |
8c227e7f | 2997 | RateLimit rl = { .interval = 1*USEC_PER_SEC, .burst = 50000 }; |
9152c765 | 2998 | int r; |
9152c765 LP |
2999 | |
3000 | assert(m); | |
1fb70e66 | 3001 | assert(m->objective == MANAGER_OK); /* Ensure manager_startup() has been called */ |
9152c765 | 3002 | |
b0c918b9 LP |
3003 | manager_check_finished(m); |
3004 | ||
575b300b LP |
3005 | /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */ |
3006 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
e96d6be7 | 3007 | if (r < 0) |
575b300b | 3008 | return log_error_errno(r, "Failed to enable SIGCHLD event source: %m"); |
a4312405 | 3009 | |
af41e508 | 3010 | while (m->objective == MANAGER_OK) { |
9152c765 | 3011 | |
ae4a0ec4 | 3012 | (void) watchdog_ping(); |
e96d6be7 | 3013 | |
7994ac1d | 3014 | if (!ratelimit_below(&rl)) { |
ea430986 LP |
3015 | /* Yay, something is going seriously wrong, pause a little */ |
3016 | log_warning("Looping too fast. Throttling execution a little."); | |
3017 | sleep(1); | |
3018 | } | |
3019 | ||
37a8e683 | 3020 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
3021 | continue; |
3022 | ||
c5a97ed1 LP |
3023 | if (manager_dispatch_gc_job_queue(m) > 0) |
3024 | continue; | |
3025 | ||
3026 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
3027 | continue; |
3028 | ||
cf1265e1 | 3029 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 3030 | continue; |
034c6ed7 | 3031 | |
91a6073e | 3032 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
3033 | continue; |
3034 | ||
0bc488c9 LP |
3035 | if (manager_dispatch_start_when_upheld_queue(m) > 0) |
3036 | continue; | |
3037 | ||
56c59592 LP |
3038 | if (manager_dispatch_stop_when_bound_queue(m) > 0) |
3039 | continue; | |
3040 | ||
a3c1168a LP |
3041 | if (manager_dispatch_stop_when_unneeded_queue(m) > 0) |
3042 | continue; | |
3043 | ||
c1e1601e | 3044 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 3045 | continue; |
ea430986 | 3046 | |
c5f8a179 | 3047 | /* Sleep for watchdog runtime wait time */ |
12663295 | 3048 | r = sd_event_run(m->event, watchdog_runtime_wait()); |
23bbb0de MS |
3049 | if (r < 0) |
3050 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 3051 | } |
957ca890 | 3052 | |
af41e508 | 3053 | return m->objective; |
83c60c9f | 3054 | } |
ea430986 | 3055 | |
718db961 | 3056 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 3057 | _cleanup_free_ char *n = NULL; |
4b58153d | 3058 | sd_id128_t invocation_id; |
ea430986 | 3059 | Unit *u; |
80fbf05e | 3060 | int r; |
ea430986 LP |
3061 | |
3062 | assert(m); | |
3063 | assert(s); | |
3064 | assert(_u); | |
3065 | ||
ede3a796 LP |
3066 | r = unit_name_from_dbus_path(s, &n); |
3067 | if (r < 0) | |
3068 | return r; | |
ea430986 | 3069 | |
4b58153d LP |
3070 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
3071 | * as invocation ID. */ | |
3072 | r = sd_id128_from_string(n, &invocation_id); | |
3073 | if (r >= 0) { | |
3074 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
3075 | if (u) { | |
3076 | *_u = u; | |
3077 | return 0; | |
3078 | } | |
3079 | ||
930c124c ZJS |
3080 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, |
3081 | "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", | |
3082 | SD_ID128_FORMAT_VAL(invocation_id)); | |
4b58153d LP |
3083 | } |
3084 | ||
00c83b43 | 3085 | /* If this didn't work, we check if this is a unit name */ |
930c124c ZJS |
3086 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
3087 | _cleanup_free_ char *nn = NULL; | |
3088 | ||
3089 | nn = cescape(n); | |
3090 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, | |
3091 | "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn)); | |
3092 | } | |
00c83b43 | 3093 | |
80fbf05e | 3094 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
3095 | if (r < 0) |
3096 | return r; | |
ea430986 LP |
3097 | |
3098 | *_u = u; | |
ea430986 LP |
3099 | return 0; |
3100 | } | |
86fbf370 LP |
3101 | |
3102 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 3103 | const char *p; |
86fbf370 | 3104 | unsigned id; |
718db961 | 3105 | Job *j; |
86fbf370 LP |
3106 | int r; |
3107 | ||
3108 | assert(m); | |
3109 | assert(s); | |
3110 | assert(_j); | |
3111 | ||
718db961 LP |
3112 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
3113 | if (!p) | |
86fbf370 LP |
3114 | return -EINVAL; |
3115 | ||
718db961 | 3116 | r = safe_atou(p, &id); |
8742514c | 3117 | if (r < 0) |
86fbf370 LP |
3118 | return r; |
3119 | ||
8742514c LP |
3120 | j = manager_get_job(m, id); |
3121 | if (!j) | |
86fbf370 LP |
3122 | return -ENOENT; |
3123 | ||
3124 | *_j = j; | |
3125 | ||
3126 | return 0; | |
3127 | } | |
dfcd764e | 3128 | |
4927fcae | 3129 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 3130 | |
349cc4a5 | 3131 | #if HAVE_AUDIT |
2ba11090 | 3132 | _cleanup_free_ char *p = NULL; |
0aa281df | 3133 | const char *msg; |
7410616c | 3134 | int audit_fd, r; |
e537352b | 3135 | |
463d0d15 | 3136 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
3137 | return; |
3138 | ||
c1165f82 LP |
3139 | audit_fd = get_audit_fd(); |
3140 | if (audit_fd < 0) | |
e537352b LP |
3141 | return; |
3142 | ||
bbd3a7ba LP |
3143 | /* Don't generate audit events if the service was already |
3144 | * started and we're just deserializing */ | |
2c289ea8 | 3145 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
3146 | return; |
3147 | ||
ac155bb8 | 3148 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
3149 | return; |
3150 | ||
7410616c LP |
3151 | r = unit_name_to_prefix_and_instance(u->id, &p); |
3152 | if (r < 0) { | |
3153 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
3154 | return; |
3155 | } | |
3156 | ||
63c372cb | 3157 | msg = strjoina("unit=", p); |
0aa281df LP |
3158 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
3159 | if (errno == EPERM) | |
391ade86 | 3160 | /* We aren't allowed to send audit messages? |
44785992 | 3161 | * Then let's not retry again. */ |
c1165f82 | 3162 | close_audit_fd(); |
0aa281df | 3163 | else |
56f64d95 | 3164 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 3165 | } |
4927fcae | 3166 | #endif |
e537352b | 3167 | |
e537352b LP |
3168 | } |
3169 | ||
e983b760 | 3170 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 3171 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
3172 | _cleanup_free_ char *message = NULL; |
3173 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 3174 | int n = 0; |
e983b760 LP |
3175 | |
3176 | /* Don't generate plymouth events if the service was already | |
3177 | * started and we're just deserializing */ | |
2c289ea8 | 3178 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
3179 | return; |
3180 | ||
463d0d15 | 3181 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
3182 | return; |
3183 | ||
75f86906 | 3184 | if (detect_container() > 0) |
3772995a LP |
3185 | return; |
3186 | ||
ec2ce0c5 | 3187 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
3188 | return; |
3189 | ||
3190 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
3191 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
3192 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
3193 | if (fd < 0) { | |
56f64d95 | 3194 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
3195 | return; |
3196 | } | |
3197 | ||
fc2fffe7 | 3198 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
f60a028a | 3199 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3200 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 3201 | return; |
e983b760 LP |
3202 | } |
3203 | ||
305757d8 ZJS |
3204 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) |
3205 | return (void) log_oom(); | |
e983b760 LP |
3206 | |
3207 | errno = 0; | |
2ba11090 | 3208 | if (write(fd, message, n + 1) != n + 1) |
f60a028a | 3209 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3210 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
3211 | } |
3212 | ||
986935cf FB |
3213 | usec_t manager_get_watchdog(Manager *m, WatchdogType t) { |
3214 | assert(m); | |
3215 | ||
3216 | if (MANAGER_IS_USER(m)) | |
3217 | return USEC_INFINITY; | |
3218 | ||
3219 | if (timestamp_is_set(m->watchdog_overridden[t])) | |
3220 | return m->watchdog_overridden[t]; | |
3221 | ||
3222 | return m->watchdog[t]; | |
3223 | } | |
3224 | ||
3225 | void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout) { | |
986935cf FB |
3226 | |
3227 | assert(m); | |
3228 | ||
3229 | if (MANAGER_IS_USER(m)) | |
3230 | return; | |
3231 | ||
3232 | if (m->watchdog[t] == timeout) | |
3233 | return; | |
3234 | ||
3235 | if (t == WATCHDOG_RUNTIME) | |
f16890f8 FB |
3236 | if (!timestamp_is_set(m->watchdog_overridden[WATCHDOG_RUNTIME])) |
3237 | (void) watchdog_setup(timeout); | |
986935cf | 3238 | |
61927b9f | 3239 | m->watchdog[t] = timeout; |
986935cf FB |
3240 | } |
3241 | ||
43bba15a | 3242 | int manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout) { |
986935cf FB |
3243 | |
3244 | assert(m); | |
3245 | ||
3246 | if (MANAGER_IS_USER(m)) | |
3247 | return 0; | |
3248 | ||
3249 | if (m->watchdog_overridden[t] == timeout) | |
3250 | return 0; | |
3251 | ||
3252 | if (t == WATCHDOG_RUNTIME) { | |
2628b98f | 3253 | usec_t usec = timestamp_is_set(timeout) ? timeout : m->watchdog[t]; |
986935cf | 3254 | |
f16890f8 | 3255 | (void) watchdog_setup(usec); |
986935cf FB |
3256 | } |
3257 | ||
61927b9f | 3258 | m->watchdog_overridden[t] = timeout; |
986935cf FB |
3259 | return 0; |
3260 | } | |
3261 | ||
a16e1123 | 3262 | int manager_reload(Manager *m) { |
d7ac0952 | 3263 | _unused_ _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
51d122af | 3264 | _cleanup_fdset_free_ FDSet *fds = NULL; |
6a33af40 LP |
3265 | _cleanup_fclose_ FILE *f = NULL; |
3266 | int r; | |
a16e1123 LP |
3267 | |
3268 | assert(m); | |
3269 | ||
07719a21 LP |
3270 | r = manager_open_serialization(m, &f); |
3271 | if (r < 0) | |
6a33af40 | 3272 | return log_error_errno(r, "Failed to create serialization file: %m"); |
38c52d46 | 3273 | |
07719a21 | 3274 | fds = fdset_new(); |
6a33af40 LP |
3275 | if (!fds) |
3276 | return log_oom(); | |
3277 | ||
d147e2b6 ZJS |
3278 | /* We are officially in reload mode from here on. */ |
3279 | reloading = manager_reloading_start(m); | |
a16e1123 | 3280 | |
b3680f49 | 3281 | r = manager_serialize(m, f, fds, false); |
d147e2b6 | 3282 | if (r < 0) |
d68c645b | 3283 | return r; |
a16e1123 | 3284 | |
d147e2b6 ZJS |
3285 | if (fseeko(f, 0, SEEK_SET) < 0) |
3286 | return log_error_errno(errno, "Failed to seek to beginning of serialization: %m"); | |
a16e1123 | 3287 | |
6a33af40 | 3288 | /* 💀 This is the point of no return, from here on there is no way back. 💀 */ |
d147e2b6 | 3289 | reloading = NULL; |
6a33af40 LP |
3290 | |
3291 | bus_manager_send_reloading(m, true); | |
3292 | ||
3293 | /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users | |
3294 | * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need | |
7802194a | 3295 | * it. */ |
6a33af40 | 3296 | |
a16e1123 | 3297 | manager_clear_jobs_and_units(m); |
07a78643 | 3298 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 3299 | lookup_paths_free(&m->lookup_paths); |
e8a565cb | 3300 | exec_runtime_vacuum(m); |
29206d46 | 3301 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
3302 | m->uid_refs = hashmap_free(m->uid_refs); |
3303 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 3304 | |
7c3733d5 | 3305 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
6a33af40 LP |
3306 | if (r < 0) |
3307 | log_warning_errno(r, "Failed to initialize path lookup table, ignoring: %m"); | |
5a1e9937 | 3308 | |
6a33af40 LP |
3309 | (void) manager_run_environment_generators(m); |
3310 | (void) manager_run_generators(m); | |
64691d20 | 3311 | |
581fef8d | 3312 | lookup_paths_log(&m->lookup_paths); |
07719a21 | 3313 | |
91e0ee5f | 3314 | /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */ |
e8630e69 | 3315 | manager_free_unit_name_maps(m); |
5a1e9937 | 3316 | |
6a33af40 | 3317 | /* First, enumerate what we can from kernel and suchlike */ |
3ad2afb6 | 3318 | manager_enumerate_perpetual(m); |
ba64af90 | 3319 | manager_enumerate(m); |
a16e1123 LP |
3320 | |
3321 | /* Second, deserialize our stored data */ | |
6a33af40 LP |
3322 | r = manager_deserialize(m, f, fds); |
3323 | if (r < 0) | |
3324 | log_warning_errno(r, "Deserialization failed, proceeding anyway: %m"); | |
a16e1123 | 3325 | |
6a33af40 | 3326 | /* We don't need the serialization anymore */ |
62b0cbb3 | 3327 | f = safe_fclose(f); |
a16e1123 | 3328 | |
6a33af40 LP |
3329 | /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */ |
3330 | (void) manager_setup_notify(m); | |
3331 | (void) manager_setup_cgroups_agent(m); | |
3332 | (void) manager_setup_user_lookup_fd(m); | |
00d9ef85 | 3333 | |
a16e1123 | 3334 | /* Third, fire things up! */ |
007c6337 | 3335 | manager_coldplug(m); |
a16e1123 | 3336 | |
5197be06 LP |
3337 | /* Clean up runtime objects no longer referenced */ |
3338 | manager_vacuum(m); | |
e8a565cb | 3339 | |
3deed59a AA |
3340 | /* Clean up deserialized tracked clients */ |
3341 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
3342 | ||
6a33af40 | 3343 | /* Consider the reload process complete now. */ |
31dc1ca3 LP |
3344 | assert(m->n_reloading > 0); |
3345 | m->n_reloading--; | |
3346 | ||
c6e892bc YW |
3347 | /* On manager reloading, device tag data should exists, thus, we should honor the results of device |
3348 | * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So, | |
3349 | * let's always set the flag here for safety. */ | |
3350 | m->honor_device_enumeration = true; | |
3351 | ||
5ce5e1ad | 3352 | manager_ready(m); |
8936a5e3 | 3353 | |
71445ae7 | 3354 | m->send_reloading_done = true; |
6a33af40 | 3355 | return 0; |
a16e1123 LP |
3356 | } |
3357 | ||
fdf20a31 | 3358 | void manager_reset_failed(Manager *m) { |
5632e374 | 3359 | Unit *u; |
5632e374 LP |
3360 | |
3361 | assert(m); | |
3362 | ||
90e74a66 | 3363 | HASHMAP_FOREACH(u, m->units) |
fdf20a31 | 3364 | unit_reset_failed(u); |
5632e374 LP |
3365 | } |
3366 | ||
31afa0a4 | 3367 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3368 | Unit *u; |
3369 | ||
3370 | assert(m); | |
3371 | assert(name); | |
3372 | ||
3373 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3374 | u = manager_get_unit(m, name); |
3375 | if (!u) | |
8f6df3fa LP |
3376 | return true; |
3377 | ||
31afa0a4 | 3378 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3379 | } |
3380 | ||
d8eb10d6 ZJS |
3381 | static void log_taint_string(Manager *m) { |
3382 | _cleanup_free_ char *taint = NULL; | |
3383 | ||
3384 | assert(m); | |
3385 | ||
3386 | if (MANAGER_IS_USER(m) || m->taint_logged) | |
3387 | return; | |
3388 | ||
3389 | m->taint_logged = true; /* only check for taint once */ | |
3390 | ||
3391 | taint = manager_taint_string(m); | |
3392 | if (isempty(taint)) | |
3393 | return; | |
3394 | ||
3395 | log_struct(LOG_NOTICE, | |
3396 | LOG_MESSAGE("System is tainted: %s", taint), | |
3397 | "TAINT=%s", taint, | |
a1230ff9 | 3398 | "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR); |
d8eb10d6 ZJS |
3399 | } |
3400 | ||
56dacdbc | 3401 | static void manager_notify_finished(Manager *m) { |
915b3753 | 3402 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3403 | |
638cece4 | 3404 | if (MANAGER_IS_TEST_RUN(m)) |
b0c918b9 LP |
3405 | return; |
3406 | ||
463d0d15 | 3407 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
dc3c9f5e ZJS |
3408 | char buf[FORMAT_TIMESPAN_MAX + STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX + STRLEN(" (loader) + ")] |
3409 | = {}; | |
3410 | char *p = buf; | |
3411 | size_t size = sizeof buf; | |
e03ae661 | 3412 | |
9f9f0342 LP |
3413 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3414 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3415 | * negative values. */ |
3416 | ||
9f9f0342 LP |
3417 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3418 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3419 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3420 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3421 | |
dd1db3c2 | 3422 | if (firmware_usec > 0) |
5291f26d | 3423 | size = strpcpyf(&p, size, "%s (firmware) + ", FORMAT_TIMESPAN(firmware_usec, USEC_PER_MSEC)); |
dd1db3c2 | 3424 | if (loader_usec > 0) |
5291f26d | 3425 | size = strpcpyf(&p, size, "%s (loader) + ", FORMAT_TIMESPAN(loader_usec, USEC_PER_MSEC)); |
dd1db3c2 | 3426 | |
9f9f0342 | 3427 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3428 | |
7802194a | 3429 | /* The initrd case on bare-metal */ |
9f9f0342 LP |
3430 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; |
3431 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3432 | |
e12919e8 | 3433 | log_struct(LOG_INFO, |
2b044526 | 3434 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3435 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3436 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3437 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
dd1db3c2 YW |
3438 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3439 | buf, | |
5291f26d ZJS |
3440 | FORMAT_TIMESPAN(kernel_usec, USEC_PER_MSEC), |
3441 | FORMAT_TIMESPAN(initrd_usec, USEC_PER_MSEC), | |
3442 | FORMAT_TIMESPAN(userspace_usec, USEC_PER_MSEC), | |
3443 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); | |
18fa6b27 | 3444 | } else { |
7802194a | 3445 | /* The initrd-less case on bare-metal */ |
9f9f0342 LP |
3446 | |
3447 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3448 | initrd_usec = 0; |
3449 | ||
81270860 | 3450 | log_struct(LOG_INFO, |
2b044526 | 3451 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3452 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3453 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
dd1db3c2 YW |
3454 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.", |
3455 | buf, | |
5291f26d ZJS |
3456 | FORMAT_TIMESPAN(kernel_usec, USEC_PER_MSEC), |
3457 | FORMAT_TIMESPAN(userspace_usec, USEC_PER_MSEC), | |
3458 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); | |
e12919e8 LP |
3459 | } |
3460 | } else { | |
4adf314b | 3461 | /* The container and --user case */ |
e12919e8 | 3462 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3463 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3464 | |
3465 | log_struct(LOG_INFO, | |
2b044526 | 3466 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3467 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca | 3468 | LOG_MESSAGE("Startup finished in %s.", |
5291f26d | 3469 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3470 | } |
b0c918b9 | 3471 | |
718db961 | 3472 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 | 3473 | |
d8eb10d6 | 3474 | log_taint_string(m); |
b0c918b9 LP |
3475 | } |
3476 | ||
6d932659 | 3477 | static void user_manager_send_ready(Manager *m) { |
4bf4f50f ZJS |
3478 | int r; |
3479 | ||
4adf314b LP |
3480 | assert(m); |
3481 | ||
3482 | /* We send READY=1 on reaching basic.target only when running in --user mode. */ | |
3483 | if (!MANAGER_IS_USER(m) || m->ready_sent) | |
3484 | return; | |
3485 | ||
d4341b76 ZJS |
3486 | r = sd_notify(false, |
3487 | "READY=1\n" | |
3488 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
4bf4f50f ZJS |
3489 | if (r < 0) |
3490 | log_warning_errno(r, "Failed to send readiness notification, ignoring: %m"); | |
3491 | ||
6d932659 ZJS |
3492 | m->ready_sent = true; |
3493 | m->status_ready = false; | |
3494 | } | |
3495 | ||
3496 | static void manager_send_ready(Manager *m) { | |
4bf4f50f ZJS |
3497 | int r; |
3498 | ||
6d932659 ZJS |
3499 | if (m->ready_sent && m->status_ready) |
3500 | /* Skip the notification if nothing changed. */ | |
3501 | return; | |
3502 | ||
028f7d3a ZJS |
3503 | r = sd_notify(false, |
3504 | "READY=1\n" | |
3505 | "STATUS=Ready."); | |
4bf4f50f ZJS |
3506 | if (r < 0) |
3507 | log_full_errno(m->ready_sent ? LOG_DEBUG : LOG_WARNING, r, | |
3508 | "Failed to send readiness notification, ignoring: %m"); | |
3509 | ||
6d932659 | 3510 | m->ready_sent = m->status_ready = true; |
4adf314b LP |
3511 | } |
3512 | ||
3513 | static void manager_check_basic_target(Manager *m) { | |
3514 | Unit *u; | |
3515 | ||
3516 | assert(m); | |
3517 | ||
3518 | /* Small shortcut */ | |
3519 | if (m->ready_sent && m->taint_logged) | |
3520 | return; | |
3521 | ||
3522 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3523 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3524 | return; | |
3525 | ||
3526 | /* For user managers, send out READY=1 as soon as we reach basic.target */ | |
6d932659 | 3527 | user_manager_send_ready(m); |
4adf314b LP |
3528 | |
3529 | /* Log the taint string as soon as we reach basic.target */ | |
3530 | log_taint_string(m); | |
3531 | } | |
3532 | ||
56dacdbc | 3533 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3534 | assert(m); |
3535 | ||
2c289ea8 | 3536 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3537 | return; |
3538 | ||
4259d202 LP |
3539 | /* Verify that we have entered the event loop already, and not left it again. */ |
3540 | if (!MANAGER_IS_RUNNING(m)) | |
9771b62d LP |
3541 | return; |
3542 | ||
4adf314b | 3543 | manager_check_basic_target(m); |
0c2826c6 | 3544 | |
56dacdbc | 3545 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3546 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3547 | /* Ignore any failure, this is only for feedback */ |
1b4154a8 ZJS |
3548 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, |
3549 | manager_watch_jobs_next_time(m)); | |
56dacdbc ZJS |
3550 | return; |
3551 | } | |
3552 | ||
a4ac27c1 ZJS |
3553 | /* The jobs hashmap tends to grow a lot during boot, and then it's not reused until shutdown. Let's |
3554 | kill the hashmap if it is relatively large. */ | |
3555 | if (hashmap_buckets(m->jobs) > hashmap_size(m->units) / 10) | |
3556 | m->jobs = hashmap_free(m->jobs); | |
3557 | ||
6d932659 ZJS |
3558 | manager_send_ready(m); |
3559 | ||
9c1b17c3 YW |
3560 | /* Notify Type=idle units that we are done now */ |
3561 | manager_close_idle_pipe(m); | |
3562 | ||
6d932659 ZJS |
3563 | if (MANAGER_IS_FINISHED(m)) |
3564 | return; | |
3565 | ||
7365a296 | 3566 | manager_flip_auto_status(m, false, "boot finished"); |
56dacdbc | 3567 | |
56dacdbc | 3568 | /* Turn off confirm spawn now */ |
7d5ceb64 | 3569 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
3570 | |
3571 | /* No need to update ask password status when we're going non-interactive */ | |
3572 | manager_close_ask_password(m); | |
3573 | ||
3574 | /* This is no longer the first boot */ | |
3575 | manager_set_first_boot(m, false); | |
3576 | ||
9f9f0342 | 3577 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
3578 | |
3579 | manager_notify_finished(m); | |
3580 | ||
e7ab4d1a | 3581 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3582 | } |
3583 | ||
64691d20 ZJS |
3584 | static bool generator_path_any(const char* const* paths) { |
3585 | char **path; | |
3586 | bool found = false; | |
3587 | ||
3588 | /* Optimize by skipping the whole process by not creating output directories | |
3589 | * if no generators are found. */ | |
3590 | STRV_FOREACH(path, (char**) paths) | |
3591 | if (access(*path, F_OK) == 0) | |
3592 | found = true; | |
3593 | else if (errno != ENOENT) | |
3594 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
3595 | ||
3596 | return found; | |
3597 | } | |
3598 | ||
64691d20 ZJS |
3599 | static int manager_run_environment_generators(Manager *m) { |
3600 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
cccf5703 | 3601 | _cleanup_strv_free_ char **paths = NULL; |
1ad6e8b3 LP |
3602 | void* args[] = { |
3603 | [STDOUT_GENERATE] = &tmp, | |
3604 | [STDOUT_COLLECT] = &tmp, | |
3605 | [STDOUT_CONSUME] = &m->transient_environment, | |
3606 | }; | |
e3b8d063 | 3607 | int r; |
64691d20 | 3608 | |
638cece4 | 3609 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
e0a3da1f ZJS |
3610 | return 0; |
3611 | ||
cccf5703 BB |
3612 | paths = env_generator_binary_paths(MANAGER_IS_SYSTEM(m)); |
3613 | if (!paths) | |
3614 | return log_oom(); | |
64691d20 | 3615 | |
cccf5703 | 3616 | if (!generator_path_any((const char* const*) paths)) |
64691d20 ZJS |
3617 | return 0; |
3618 | ||
e3b8d063 | 3619 | RUN_WITH_UMASK(0022) |
cccf5703 | 3620 | r = execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, gather_environment, |
43f565c6 YW |
3621 | args, NULL, m->transient_environment, |
3622 | EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS | EXEC_DIR_SET_SYSTEMD_EXEC_PID); | |
e3b8d063 | 3623 | return r; |
64691d20 ZJS |
3624 | } |
3625 | ||
e801700e | 3626 | static int manager_run_generators(Manager *m) { |
f42348ac | 3627 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 3628 | const char *argv[5]; |
07719a21 | 3629 | int r; |
5a1e9937 LP |
3630 | |
3631 | assert(m); | |
3632 | ||
638cece4 | 3633 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
e0a3da1f ZJS |
3634 | return 0; |
3635 | ||
9183df70 | 3636 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3637 | if (!paths) |
3638 | return log_oom(); | |
5a1e9937 | 3639 | |
64691d20 ZJS |
3640 | if (!generator_path_any((const char* const*) paths)) |
3641 | return 0; | |
5a1e9937 | 3642 | |
cd64fd56 | 3643 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
7eb4f326 LP |
3644 | if (r < 0) { |
3645 | log_error_errno(r, "Failed to create generator directories: %m"); | |
07719a21 | 3646 | goto finish; |
7eb4f326 | 3647 | } |
5a1e9937 | 3648 | |
83cc030f | 3649 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3650 | argv[1] = m->lookup_paths.generator; |
3651 | argv[2] = m->lookup_paths.generator_early; | |
3652 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3653 | argv[4] = NULL; |
5a1e9937 | 3654 | |
718db961 | 3655 | RUN_WITH_UMASK(0022) |
4b05f0c9 | 3656 | (void) execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, NULL, NULL, |
43f565c6 YW |
3657 | (char**) argv, m->transient_environment, |
3658 | EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS | EXEC_DIR_SET_SYSTEMD_EXEC_PID); | |
7eb4f326 LP |
3659 | |
3660 | r = 0; | |
5a1e9937 | 3661 | |
718db961 | 3662 | finish: |
cd64fd56 | 3663 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3664 | return r; |
5a1e9937 LP |
3665 | } |
3666 | ||
1ad6e8b3 LP |
3667 | int manager_transient_environment_add(Manager *m, char **plus) { |
3668 | char **a; | |
3669 | ||
3670 | assert(m); | |
3671 | ||
3672 | if (strv_isempty(plus)) | |
3673 | return 0; | |
3674 | ||
4ab3d29f | 3675 | a = strv_env_merge(m->transient_environment, plus); |
1ad6e8b3 | 3676 | if (!a) |
2fbbbf9a | 3677 | return log_oom(); |
1ad6e8b3 LP |
3678 | |
3679 | sanitize_environment(a); | |
3680 | ||
3681 | return strv_free_and_replace(m->transient_environment, a); | |
3682 | } | |
3683 | ||
3684 | int manager_client_environment_modify( | |
3685 | Manager *m, | |
3686 | char **minus, | |
3687 | char **plus) { | |
3688 | ||
718db961 | 3689 | char **a = NULL, **b = NULL, **l; |
1ad6e8b3 | 3690 | |
97d0e5f8 | 3691 | assert(m); |
bcd8e6d1 | 3692 | |
1ad6e8b3 LP |
3693 | if (strv_isempty(minus) && strv_isempty(plus)) |
3694 | return 0; | |
3695 | ||
3696 | l = m->client_environment; | |
bcd8e6d1 | 3697 | |
718db961 LP |
3698 | if (!strv_isempty(minus)) { |
3699 | a = strv_env_delete(l, 1, minus); | |
3700 | if (!a) | |
3701 | return -ENOMEM; | |
3702 | ||
3703 | l = a; | |
3704 | } | |
3705 | ||
3706 | if (!strv_isempty(plus)) { | |
4ab3d29f | 3707 | b = strv_env_merge(l, plus); |
aa9f8a30 AH |
3708 | if (!b) { |
3709 | strv_free(a); | |
718db961 | 3710 | return -ENOMEM; |
aa9f8a30 | 3711 | } |
bcd8e6d1 | 3712 | |
718db961 LP |
3713 | l = b; |
3714 | } | |
3715 | ||
1ad6e8b3 LP |
3716 | if (m->client_environment != l) |
3717 | strv_free(m->client_environment); | |
3718 | ||
718db961 LP |
3719 | if (a != l) |
3720 | strv_free(a); | |
3721 | if (b != l) | |
3722 | strv_free(b); | |
3723 | ||
1ad6e8b3 LP |
3724 | m->client_environment = sanitize_environment(l); |
3725 | return 0; | |
3726 | } | |
3727 | ||
3728 | int manager_get_effective_environment(Manager *m, char ***ret) { | |
3729 | char **l; | |
3730 | ||
3731 | assert(m); | |
3732 | assert(ret); | |
3733 | ||
4ab3d29f | 3734 | l = strv_env_merge(m->transient_environment, m->client_environment); |
1ad6e8b3 LP |
3735 | if (!l) |
3736 | return -ENOMEM; | |
f069efb4 | 3737 | |
1ad6e8b3 | 3738 | *ret = l; |
97d0e5f8 UTL |
3739 | return 0; |
3740 | } | |
3741 | ||
c93ff2e9 | 3742 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
c93ff2e9 FC |
3743 | assert(m); |
3744 | ||
5b10116e | 3745 | for (unsigned i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3746 | m->rlimit[i] = mfree(m->rlimit[i]); |
3747 | ||
07719a21 LP |
3748 | if (!default_rlimit[i]) |
3749 | continue; | |
c93ff2e9 | 3750 | |
07719a21 LP |
3751 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3752 | if (!m->rlimit[i]) | |
3ce40911 | 3753 | return log_oom(); |
c93ff2e9 FC |
3754 | } |
3755 | ||
3756 | return 0; | |
3757 | } | |
3758 | ||
8559b3b7 LP |
3759 | void manager_recheck_dbus(Manager *m) { |
3760 | assert(m); | |
3761 | ||
3762 | /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all | |
3763 | * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the | |
3764 | * connection of the API bus). That's because the system bus after all runs as service of the system instance, | |
3765 | * while in the user instance we can assume it's already there. */ | |
3766 | ||
31dc1ca3 LP |
3767 | if (MANAGER_IS_RELOADING(m)) |
3768 | return; /* don't check while we are reloading… */ | |
3769 | ||
8559b3b7 LP |
3770 | if (manager_dbus_is_running(m, false)) { |
3771 | (void) bus_init_api(m); | |
3772 | ||
3773 | if (MANAGER_IS_SYSTEM(m)) | |
3774 | (void) bus_init_system(m); | |
3775 | } else { | |
3776 | (void) bus_done_api(m); | |
3777 | ||
3778 | if (MANAGER_IS_SYSTEM(m)) | |
3779 | (void) bus_done_system(m); | |
3780 | } | |
3781 | } | |
3782 | ||
d075092f | 3783 | static bool manager_journal_is_running(Manager *m) { |
f1dd0c3f LP |
3784 | Unit *u; |
3785 | ||
3786 | assert(m); | |
3787 | ||
638cece4 | 3788 | if (MANAGER_IS_TEST_RUN(m)) |
7d814a19 LP |
3789 | return false; |
3790 | ||
d075092f | 3791 | /* If we are the user manager we can safely assume that the journal is up */ |
463d0d15 | 3792 | if (!MANAGER_IS_SYSTEM(m)) |
d075092f | 3793 | return true; |
f1dd0c3f | 3794 | |
d075092f | 3795 | /* Check that the socket is not only up, but in RUNNING state */ |
731a676c | 3796 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
d075092f LP |
3797 | if (!u) |
3798 | return false; | |
3799 | if (SOCKET(u)->state != SOCKET_RUNNING) | |
3800 | return false; | |
f1dd0c3f | 3801 | |
d075092f | 3802 | /* Similar, check if the daemon itself is fully up, too */ |
731a676c | 3803 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
d075092f LP |
3804 | if (!u) |
3805 | return false; | |
217677ab | 3806 | if (!IN_SET(SERVICE(u)->state, SERVICE_RELOAD, SERVICE_RUNNING)) |
d075092f LP |
3807 | return false; |
3808 | ||
3809 | return true; | |
3810 | } | |
3811 | ||
6123dfaa ZJS |
3812 | void disable_printk_ratelimit(void) { |
3813 | /* Disable kernel's printk ratelimit. | |
3814 | * | |
3815 | * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging | |
3816 | * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line | |
3817 | * setting takes precedence. */ | |
3818 | int r; | |
3819 | ||
3820 | r = sysctl_write("kernel/printk_devkmsg", "on"); | |
3821 | if (r < 0) | |
3822 | log_debug_errno(r, "Failed to set sysctl kernel.printk_devkmsg=on: %m"); | |
3823 | } | |
3824 | ||
d075092f LP |
3825 | void manager_recheck_journal(Manager *m) { |
3826 | ||
3827 | assert(m); | |
3828 | ||
3829 | /* Don't bother with this unless we are in the special situation of being PID 1 */ | |
3830 | if (getpid_cached() != 1) | |
731a676c | 3831 | return; |
f1dd0c3f | 3832 | |
31dc1ca3 LP |
3833 | /* Don't check this while we are reloading, things might still change */ |
3834 | if (MANAGER_IS_RELOADING(m)) | |
3835 | return; | |
3836 | ||
cedf5088 LP |
3837 | /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the |
3838 | * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger | |
3839 | * an activation ourselves we can't fulfill. */ | |
3840 | log_set_prohibit_ipc(!manager_journal_is_running(m)); | |
cc2b9e6b | 3841 | log_open(); |
f1dd0c3f LP |
3842 | } |
3843 | ||
44a41954 FB |
3844 | static ShowStatus manager_get_show_status(Manager *m) { |
3845 | assert(m); | |
3846 | ||
3847 | if (MANAGER_IS_USER(m)) | |
3848 | return _SHOW_STATUS_INVALID; | |
3849 | ||
3850 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) | |
3851 | return m->show_status_overridden; | |
3852 | ||
3853 | return m->show_status; | |
3854 | } | |
3855 | ||
3856 | bool manager_get_show_status_on(Manager *m) { | |
3857 | assert(m); | |
3858 | ||
3859 | return show_status_on(manager_get_show_status(m)); | |
3860 | } | |
b309078a | 3861 | |
3ceb3471 FB |
3862 | static void set_show_status_marker(bool b) { |
3863 | if (b) | |
3864 | (void) touch("/run/systemd/show-status"); | |
3865 | else | |
3866 | (void) unlink("/run/systemd/show-status"); | |
3867 | } | |
3868 | ||
44a41954 | 3869 | void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) { |
27d340c7 | 3870 | assert(m); |
44a41954 | 3871 | assert(reason); |
0d066dd1 | 3872 | assert(mode >= 0 && mode < _SHOW_STATUS_MAX); |
27d340c7 | 3873 | |
44a41954 | 3874 | if (MANAGER_IS_USER(m)) |
27d340c7 LP |
3875 | return; |
3876 | ||
ef15d3e1 ZJS |
3877 | if (mode == m->show_status) |
3878 | return; | |
3879 | ||
44a41954 FB |
3880 | if (m->show_status_overridden == _SHOW_STATUS_INVALID) { |
3881 | bool enabled; | |
3882 | ||
3883 | enabled = show_status_on(mode); | |
3884 | log_debug("%s (%s) showing of status (%s).", | |
3885 | enabled ? "Enabling" : "Disabling", | |
3886 | strna(show_status_to_string(mode)), | |
3887 | reason); | |
3888 | ||
3ceb3471 | 3889 | set_show_status_marker(enabled); |
44a41954 FB |
3890 | } |
3891 | ||
3892 | m->show_status = mode; | |
3893 | } | |
3894 | ||
43bba15a | 3895 | void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason) { |
44a41954 FB |
3896 | assert(m); |
3897 | assert(mode < _SHOW_STATUS_MAX); | |
3898 | ||
3899 | if (MANAGER_IS_USER(m)) | |
3900 | return; | |
3901 | ||
3902 | if (mode == m->show_status_overridden) | |
3903 | return; | |
3904 | ||
3905 | m->show_status_overridden = mode; | |
3906 | ||
3907 | if (mode == _SHOW_STATUS_INVALID) | |
3908 | mode = m->show_status; | |
3909 | ||
ef15d3e1 | 3910 | log_debug("%s (%s) showing of status (%s).", |
44a41954 | 3911 | m->show_status_overridden != _SHOW_STATUS_INVALID ? "Overriding" : "Restoring", |
ef15d3e1 ZJS |
3912 | strna(show_status_to_string(mode)), |
3913 | reason); | |
b309078a | 3914 | |
3ceb3471 | 3915 | set_show_status_marker(show_status_on(mode)); |
27d340c7 LP |
3916 | } |
3917 | ||
7d5ceb64 FB |
3918 | const char *manager_get_confirm_spawn(Manager *m) { |
3919 | static int last_errno = 0; | |
7d5ceb64 FB |
3920 | struct stat st; |
3921 | int r; | |
3922 | ||
ea758432 LP |
3923 | assert(m); |
3924 | ||
7d5ceb64 FB |
3925 | /* Here's the deal: we want to test the validity of the console but don't want |
3926 | * PID1 to go through the whole console process which might block. But we also | |
3927 | * want to warn the user only once if something is wrong with the console so we | |
3928 | * cannot do the sanity checks after spawning our children. So here we simply do | |
3929 | * really basic tests to hopefully trap common errors. | |
3930 | * | |
3931 | * If the console suddenly disappear at the time our children will really it | |
3932 | * then they will simply fail to acquire it and a positive answer will be | |
2aed63f4 | 3933 | * assumed. New children will fall back to /dev/console though. |
7d5ceb64 FB |
3934 | * |
3935 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
3936 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
2aed63f4 | 3937 | * reason the configured console is not ready, we fall back to the default |
7d5ceb64 FB |
3938 | * console. */ |
3939 | ||
ea758432 LP |
3940 | if (!m->confirm_spawn || path_equal(m->confirm_spawn, "/dev/console")) |
3941 | return m->confirm_spawn; | |
7d5ceb64 | 3942 | |
ea758432 LP |
3943 | if (stat(m->confirm_spawn, &st) < 0) { |
3944 | r = -errno; | |
7d5ceb64 | 3945 | goto fail; |
ea758432 | 3946 | } |
7d5ceb64 FB |
3947 | |
3948 | if (!S_ISCHR(st.st_mode)) { | |
ea758432 | 3949 | r = -ENOTTY; |
7d5ceb64 FB |
3950 | goto fail; |
3951 | } | |
3952 | ||
3953 | last_errno = 0; | |
ea758432 LP |
3954 | return m->confirm_spawn; |
3955 | ||
7d5ceb64 | 3956 | fail: |
ea758432 LP |
3957 | if (last_errno != r) |
3958 | last_errno = log_warning_errno(r, "Failed to open %s, using default console: %m", m->confirm_spawn); | |
3959 | ||
7d5ceb64 FB |
3960 | return "/dev/console"; |
3961 | } | |
3962 | ||
e2680723 LP |
3963 | void manager_set_first_boot(Manager *m, bool b) { |
3964 | assert(m); | |
3965 | ||
463d0d15 | 3966 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3967 | return; |
3968 | ||
ae2a2c53 LP |
3969 | if (m->first_boot != (int) b) { |
3970 | if (b) | |
3971 | (void) touch("/run/systemd/first-boot"); | |
3972 | else | |
3973 | (void) unlink("/run/systemd/first-boot"); | |
3974 | } | |
e2680723 | 3975 | |
ae2a2c53 | 3976 | m->first_boot = b; |
e2680723 LP |
3977 | } |
3978 | ||
b0eb2944 FB |
3979 | void manager_disable_confirm_spawn(void) { |
3980 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
3981 | } | |
3982 | ||
3983 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
3984 | if (!m->confirm_spawn) | |
3985 | return true; | |
3986 | ||
3987 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
3988 | } | |
3989 | ||
0d6d3cf0 FB |
3990 | static bool manager_should_show_status(Manager *m, StatusType type) { |
3991 | assert(m); | |
3992 | ||
3993 | if (!MANAGER_IS_SYSTEM(m)) | |
3994 | return false; | |
3995 | ||
3996 | if (m->no_console_output) | |
3997 | return false; | |
3998 | ||
3999 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) | |
4000 | return false; | |
4001 | ||
4002 | /* If we cannot find out the status properly, just proceed. */ | |
4003 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) | |
4004 | return false; | |
4005 | ||
4006 | if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO) | |
4007 | return true; | |
4008 | ||
44a41954 | 4009 | return manager_get_show_status_on(m); |
0d6d3cf0 FB |
4010 | } |
4011 | ||
127d5fd1 | 4012 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
4013 | va_list ap; |
4014 | ||
cb6531be ZJS |
4015 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
4016 | ||
0d6d3cf0 | 4017 | if (m && !manager_should_show_status(m, type)) |
25cee550 MS |
4018 | return; |
4019 | ||
03b717a3 MS |
4020 | /* XXX We should totally drop the check for ephemeral here |
4021 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 4022 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
4023 | return; |
4024 | ||
25cee550 | 4025 | va_start(ap, format); |
a885727a | 4026 | status_vprintf(status, SHOW_STATUS_ELLIPSIZE|(type == STATUS_TYPE_EPHEMERAL ? SHOW_STATUS_EPHEMERAL : 0), format, ap); |
25cee550 MS |
4027 | va_end(ap); |
4028 | } | |
4029 | ||
ac19bdd0 | 4030 | Set* manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
a57f7e2c LP |
4031 | assert(m); |
4032 | assert(path); | |
4033 | ||
ac19bdd0 ZJS |
4034 | if (path_equal(path, "/")) |
4035 | path = ""; | |
a57f7e2c | 4036 | |
ac19bdd0 | 4037 | return hashmap_get(m->units_requiring_mounts_for, path); |
a57f7e2c | 4038 | } |
e66cf1a3 | 4039 | |
5269eb6b | 4040 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 4041 | unsigned size; |
5269eb6b | 4042 | int r; |
03455c28 LDM |
4043 | |
4044 | assert(m); | |
4045 | assert(u->manager == m); | |
4046 | ||
4047 | size = set_size(m->failed_units); | |
4048 | ||
9fff8981 | 4049 | if (failed) { |
de7fef4b | 4050 | r = set_ensure_put(&m->failed_units, NULL, u); |
5269eb6b LP |
4051 | if (r < 0) |
4052 | return log_oom(); | |
9fff8981 | 4053 | } else |
5269eb6b | 4054 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
4055 | |
4056 | if (set_size(m->failed_units) != size) | |
4057 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
4058 | |
4059 | return 0; | |
03455c28 LDM |
4060 | } |
4061 | ||
f755e3b7 LP |
4062 | ManagerState manager_state(Manager *m) { |
4063 | Unit *u; | |
4064 | ||
4065 | assert(m); | |
4066 | ||
f9d29f6d JB |
4067 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
4068 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
4069 | if (u && unit_active_or_pending(u)) | |
4070 | return MANAGER_STOPPING; | |
4071 | ||
f755e3b7 | 4072 | /* Did we ever finish booting? If not then we are still starting up */ |
49d5666c | 4073 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
4074 | |
4075 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
4076 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
4077 | return MANAGER_INITIALIZING; | |
4078 | ||
f755e3b7 | 4079 | return MANAGER_STARTING; |
d81afec1 | 4080 | } |
f755e3b7 | 4081 | |
45a7b16b LP |
4082 | if (MANAGER_IS_SYSTEM(m)) { |
4083 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
4084 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
4085 | if (u && unit_active_or_pending(u)) | |
4086 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 4087 | |
45a7b16b LP |
4088 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
4089 | if (u && unit_active_or_pending(u)) | |
4090 | return MANAGER_MAINTENANCE; | |
4091 | } | |
f755e3b7 LP |
4092 | |
4093 | /* Are there any failed units? If so, we are in degraded mode */ | |
4094 | if (set_size(m->failed_units) > 0) | |
4095 | return MANAGER_DEGRADED; | |
4096 | ||
4097 | return MANAGER_RUNNING; | |
4098 | } | |
4099 | ||
00d9ef85 | 4100 | static void manager_unref_uid_internal( |
010becd9 | 4101 | Hashmap *uid_refs, |
00d9ef85 LP |
4102 | uid_t uid, |
4103 | bool destroy_now, | |
4104 | int (*_clean_ipc)(uid_t uid)) { | |
4105 | ||
4106 | uint32_t c, n; | |
4107 | ||
00d9ef85 LP |
4108 | assert(uid_is_valid(uid)); |
4109 | assert(_clean_ipc); | |
4110 | ||
4111 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
4112 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
4113 | * | |
827d1ba7 | 4114 | * We store a hashmap where the key is the UID/GID and the value is a 32bit reference counter, whose highest |
00d9ef85 LP |
4115 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID |
4116 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
4117 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
4118 | ||
4119 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4120 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4121 | ||
4122 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4123 | return; | |
4124 | ||
010becd9 | 4125 | c = PTR_TO_UINT32(hashmap_get(uid_refs, UID_TO_PTR(uid))); |
00d9ef85 LP |
4126 | |
4127 | n = c & ~DESTROY_IPC_FLAG; | |
4128 | assert(n > 0); | |
4129 | n--; | |
4130 | ||
4131 | if (destroy_now && n == 0) { | |
010becd9 | 4132 | hashmap_remove(uid_refs, UID_TO_PTR(uid)); |
00d9ef85 LP |
4133 | |
4134 | if (c & DESTROY_IPC_FLAG) { | |
4135 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
4136 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4137 | uid); | |
4138 | (void) _clean_ipc(uid); | |
4139 | } | |
4140 | } else { | |
4141 | c = n | (c & DESTROY_IPC_FLAG); | |
010becd9 | 4142 | assert_se(hashmap_update(uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); |
00d9ef85 LP |
4143 | } |
4144 | } | |
4145 | ||
4146 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
010becd9 | 4147 | manager_unref_uid_internal(m->uid_refs, uid, destroy_now, clean_ipc_by_uid); |
00d9ef85 LP |
4148 | } |
4149 | ||
4150 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
010becd9 | 4151 | manager_unref_uid_internal(m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); |
00d9ef85 LP |
4152 | } |
4153 | ||
4154 | static int manager_ref_uid_internal( | |
00d9ef85 LP |
4155 | Hashmap **uid_refs, |
4156 | uid_t uid, | |
4157 | bool clean_ipc) { | |
4158 | ||
4159 | uint32_t c, n; | |
4160 | int r; | |
4161 | ||
00d9ef85 LP |
4162 | assert(uid_refs); |
4163 | assert(uid_is_valid(uid)); | |
4164 | ||
4165 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
4166 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
4167 | ||
4168 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4169 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4170 | ||
4171 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4172 | return 0; | |
4173 | ||
4174 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
4175 | if (r < 0) | |
4176 | return r; | |
4177 | ||
4178 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4179 | ||
4180 | n = c & ~DESTROY_IPC_FLAG; | |
4181 | n++; | |
4182 | ||
4183 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
4184 | return -EOVERFLOW; | |
4185 | ||
4186 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
4187 | ||
4188 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
4189 | } | |
4190 | ||
4191 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
010becd9 | 4192 | return manager_ref_uid_internal(&m->uid_refs, uid, clean_ipc); |
00d9ef85 LP |
4193 | } |
4194 | ||
4195 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
010becd9 | 4196 | return manager_ref_uid_internal(&m->gid_refs, (uid_t) gid, clean_ipc); |
00d9ef85 LP |
4197 | } |
4198 | ||
4199 | static void manager_vacuum_uid_refs_internal( | |
010becd9 | 4200 | Hashmap *uid_refs, |
00d9ef85 LP |
4201 | int (*_clean_ipc)(uid_t uid)) { |
4202 | ||
00d9ef85 LP |
4203 | void *p, *k; |
4204 | ||
00d9ef85 LP |
4205 | assert(_clean_ipc); |
4206 | ||
010becd9 | 4207 | HASHMAP_FOREACH_KEY(p, k, uid_refs) { |
00d9ef85 LP |
4208 | uint32_t c, n; |
4209 | uid_t uid; | |
4210 | ||
4211 | uid = PTR_TO_UID(k); | |
4212 | c = PTR_TO_UINT32(p); | |
4213 | ||
4214 | n = c & ~DESTROY_IPC_FLAG; | |
4215 | if (n > 0) | |
4216 | continue; | |
4217 | ||
4218 | if (c & DESTROY_IPC_FLAG) { | |
4219 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
4220 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4221 | uid); | |
4222 | (void) _clean_ipc(uid); | |
4223 | } | |
4224 | ||
010becd9 | 4225 | assert_se(hashmap_remove(uid_refs, k) == p); |
00d9ef85 LP |
4226 | } |
4227 | } | |
4228 | ||
06a4eb07 | 4229 | static void manager_vacuum_uid_refs(Manager *m) { |
010becd9 | 4230 | manager_vacuum_uid_refs_internal(m->uid_refs, clean_ipc_by_uid); |
00d9ef85 LP |
4231 | } |
4232 | ||
06a4eb07 | 4233 | static void manager_vacuum_gid_refs(Manager *m) { |
010becd9 | 4234 | manager_vacuum_uid_refs_internal(m->gid_refs, clean_ipc_by_gid); |
00d9ef85 LP |
4235 | } |
4236 | ||
06a4eb07 FB |
4237 | static void manager_vacuum(Manager *m) { |
4238 | assert(m); | |
4239 | ||
4240 | /* Release any dynamic users no longer referenced */ | |
4241 | dynamic_user_vacuum(m, true); | |
4242 | ||
4243 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ | |
4244 | manager_vacuum_uid_refs(m); | |
4245 | manager_vacuum_gid_refs(m); | |
4246 | ||
4247 | /* Release any runtimes no longer referenced */ | |
4248 | exec_runtime_vacuum(m); | |
4249 | } | |
4250 | ||
00d9ef85 LP |
4251 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
4252 | struct buffer { | |
4253 | uid_t uid; | |
4254 | gid_t gid; | |
4255 | char unit_name[UNIT_NAME_MAX+1]; | |
4256 | } _packed_ buffer; | |
4257 | ||
4258 | Manager *m = userdata; | |
4259 | ssize_t l; | |
4260 | size_t n; | |
4261 | Unit *u; | |
4262 | ||
4263 | assert_se(source); | |
4264 | assert_se(m); | |
4265 | ||
4266 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
4267 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
4268 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
4269 | ||
4270 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
4271 | if (l < 0) { | |
8add30a0 | 4272 | if (ERRNO_IS_TRANSIENT(errno)) |
00d9ef85 LP |
4273 | return 0; |
4274 | ||
4275 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
4276 | } | |
4277 | ||
4278 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
4279 | log_warning("Received too short user lookup message, ignoring."); | |
4280 | return 0; | |
4281 | } | |
4282 | ||
4283 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
4284 | log_warning("Received too long user lookup message, ignoring."); | |
4285 | return 0; | |
4286 | } | |
4287 | ||
4288 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
4289 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
4290 | return 0; | |
4291 | } | |
4292 | ||
4293 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
4294 | if (memchr(buffer.unit_name, 0, n)) { | |
4295 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
4296 | return 0; | |
4297 | } | |
4298 | ||
4299 | buffer.unit_name[n] = 0; | |
4300 | u = manager_get_unit(m, buffer.unit_name); | |
4301 | if (!u) { | |
4302 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
4303 | return 0; | |
4304 | } | |
4305 | ||
4306 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
4307 | ||
4308 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
4309 | return 0; | |
4310 | } | |
4311 | ||
af6b0ecc | 4312 | char *manager_taint_string(Manager *m) { |
90d7464d | 4313 | _cleanup_free_ char *destination = NULL, *overflowuid = NULL, *overflowgid = NULL; |
af6b0ecc LP |
4314 | char *buf, *e; |
4315 | int r; | |
4316 | ||
198ce932 ZJS |
4317 | /* Returns a "taint string", e.g. "local-hwclock:var-run-bad". |
4318 | * Only things that are detected at runtime should be tagged | |
4319 | * here. For stuff that is set during compilation, emit a warning | |
4320 | * in the configuration phase. */ | |
4321 | ||
af6b0ecc LP |
4322 | assert(m); |
4323 | ||
4324 | buf = new(char, sizeof("split-usr:" | |
4325 | "cgroups-missing:" | |
82f30632 | 4326 | "cgrousv1:" |
af6b0ecc LP |
4327 | "local-hwclock:" |
4328 | "var-run-bad:" | |
90d7464d LP |
4329 | "overflowuid-not-65534:" |
4330 | "overflowgid-not-65534:")); | |
af6b0ecc LP |
4331 | if (!buf) |
4332 | return NULL; | |
4333 | ||
4334 | e = buf; | |
0fd402b0 | 4335 | buf[0] = 0; |
af6b0ecc LP |
4336 | |
4337 | if (m->taint_usr) | |
4338 | e = stpcpy(e, "split-usr:"); | |
4339 | ||
4340 | if (access("/proc/cgroups", F_OK) < 0) | |
4341 | e = stpcpy(e, "cgroups-missing:"); | |
4342 | ||
82f30632 LP |
4343 | if (cg_all_unified() == 0) |
4344 | e = stpcpy(e, "cgroupsv1:"); | |
4345 | ||
af6b0ecc LP |
4346 | if (clock_is_localtime(NULL) > 0) |
4347 | e = stpcpy(e, "local-hwclock:"); | |
4348 | ||
4349 | r = readlink_malloc("/var/run", &destination); | |
4350 | if (r < 0 || !PATH_IN_SET(destination, "../run", "/run")) | |
4351 | e = stpcpy(e, "var-run-bad:"); | |
4352 | ||
90d7464d LP |
4353 | r = read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid); |
4354 | if (r >= 0 && !streq(overflowuid, "65534")) | |
4355 | e = stpcpy(e, "overflowuid-not-65534:"); | |
4356 | ||
4357 | r = read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid); | |
4358 | if (r >= 0 && !streq(overflowgid, "65534")) | |
4359 | e = stpcpy(e, "overflowgid-not-65534:"); | |
4360 | ||
af6b0ecc LP |
4361 | /* remove the last ':' */ |
4362 | if (e != buf) | |
4363 | e[-1] = 0; | |
4364 | ||
4365 | return buf; | |
4366 | } | |
4367 | ||
adefcf28 LP |
4368 | void manager_ref_console(Manager *m) { |
4369 | assert(m); | |
4370 | ||
4371 | m->n_on_console++; | |
4372 | } | |
4373 | ||
4374 | void manager_unref_console(Manager *m) { | |
4375 | ||
4376 | assert(m->n_on_console > 0); | |
4377 | m->n_on_console--; | |
4378 | ||
4379 | if (m->n_on_console == 0) | |
4380 | m->no_console_output = false; /* unset no_console_output flag, since the console is definitely free now */ | |
4381 | } | |
4382 | ||
a6ecbf83 FB |
4383 | void manager_override_log_level(Manager *m, int level) { |
4384 | _cleanup_free_ char *s = NULL; | |
4385 | assert(m); | |
4386 | ||
4387 | if (!m->log_level_overridden) { | |
4388 | m->original_log_level = log_get_max_level(); | |
4389 | m->log_level_overridden = true; | |
4390 | } | |
4391 | ||
4392 | (void) log_level_to_string_alloc(level, &s); | |
4393 | log_info("Setting log level to %s.", strna(s)); | |
4394 | ||
4395 | log_set_max_level(level); | |
4396 | } | |
4397 | ||
4398 | void manager_restore_original_log_level(Manager *m) { | |
4399 | _cleanup_free_ char *s = NULL; | |
4400 | assert(m); | |
4401 | ||
4402 | if (!m->log_level_overridden) | |
4403 | return; | |
4404 | ||
4405 | (void) log_level_to_string_alloc(m->original_log_level, &s); | |
4406 | log_info("Restoring log level to original (%s).", strna(s)); | |
4407 | ||
4408 | log_set_max_level(m->original_log_level); | |
4409 | m->log_level_overridden = false; | |
4410 | } | |
4411 | ||
bda7d78b FB |
4412 | void manager_override_log_target(Manager *m, LogTarget target) { |
4413 | assert(m); | |
4414 | ||
4415 | if (!m->log_target_overridden) { | |
4416 | m->original_log_target = log_get_target(); | |
4417 | m->log_target_overridden = true; | |
4418 | } | |
4419 | ||
4420 | log_info("Setting log target to %s.", log_target_to_string(target)); | |
4421 | log_set_target(target); | |
4422 | } | |
4423 | ||
4424 | void manager_restore_original_log_target(Manager *m) { | |
4425 | assert(m); | |
4426 | ||
4427 | if (!m->log_target_overridden) | |
4428 | return; | |
4429 | ||
4430 | log_info("Restoring log target to original %s.", log_target_to_string(m->original_log_target)); | |
4431 | ||
4432 | log_set_target(m->original_log_target); | |
4433 | m->log_target_overridden = false; | |
4434 | } | |
4435 | ||
d4ee7bd8 YW |
4436 | ManagerTimestamp manager_timestamp_initrd_mangle(ManagerTimestamp s) { |
4437 | if (in_initrd() && | |
4438 | s >= MANAGER_TIMESTAMP_SECURITY_START && | |
4439 | s <= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH) | |
4440 | return s - MANAGER_TIMESTAMP_SECURITY_START + MANAGER_TIMESTAMP_INITRD_SECURITY_START; | |
4441 | return s; | |
4442 | } | |
4443 | ||
f755e3b7 | 4444 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 4445 | [MANAGER_INITIALIZING] = "initializing", |
48d83e33 ZJS |
4446 | [MANAGER_STARTING] = "starting", |
4447 | [MANAGER_RUNNING] = "running", | |
4448 | [MANAGER_DEGRADED] = "degraded", | |
4449 | [MANAGER_MAINTENANCE] = "maintenance", | |
4450 | [MANAGER_STOPPING] = "stopping", | |
f755e3b7 LP |
4451 | }; |
4452 | ||
4453 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
4454 | |
4455 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
48d83e33 ZJS |
4456 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", |
4457 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
4458 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
4459 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
4460 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
4461 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
4462 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
4463 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
4464 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
4465 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
4466 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
4467 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
49fbe940 | 4468 | [MANAGER_TIMESTAMP_UNITS_LOAD] = "units-load", |
48d83e33 ZJS |
4469 | [MANAGER_TIMESTAMP_INITRD_SECURITY_START] = "initrd-security-start", |
4470 | [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH] = "initrd-security-finish", | |
4471 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_START] = "initrd-generators-start", | |
d4ee7bd8 | 4472 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH] = "initrd-generators-finish", |
48d83e33 | 4473 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START] = "initrd-units-load-start", |
d4ee7bd8 | 4474 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH] = "initrd-units-load-finish", |
9f9f0342 LP |
4475 | }; |
4476 | ||
4477 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); | |
afcfaa69 LP |
4478 | |
4479 | static const char* const oom_policy_table[_OOM_POLICY_MAX] = { | |
4480 | [OOM_CONTINUE] = "continue", | |
48d83e33 ZJS |
4481 | [OOM_STOP] = "stop", |
4482 | [OOM_KILL] = "kill", | |
afcfaa69 LP |
4483 | }; |
4484 | ||
4485 | DEFINE_STRING_TABLE_LOOKUP(oom_policy, OOMPolicy); |