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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> |
40efaaed | 11 | #include <sys/utsname.h> |
400f1a33 LP |
12 | #include <sys/wait.h> |
13 | #include <unistd.h> | |
830f6caa | 14 | |
349cc4a5 | 15 | #if HAVE_AUDIT |
4927fcae | 16 | #include <libaudit.h> |
830f6caa | 17 | #endif |
60918275 | 18 | |
718db961 | 19 | #include "sd-daemon.h" |
718db961 | 20 | #include "sd-messages.h" |
3536f49e | 21 | #include "sd-path.h" |
81527be1 | 22 | |
57b7a260 | 23 | #include "all-units.h" |
d68c645b | 24 | #include "alloc-util.h" |
400f1a33 LP |
25 | #include "audit-fd.h" |
26 | #include "boot-timestamps.h" | |
27 | #include "bus-common-errors.h" | |
28 | #include "bus-error.h" | |
29 | #include "bus-kernel.h" | |
30 | #include "bus-util.h" | |
00d9ef85 | 31 | #include "clean-ipc.h" |
af6b0ecc | 32 | #include "clock-util.h" |
19d22d43 | 33 | #include "core-varlink.h" |
786d19fd | 34 | #include "creds-util.h" |
400f1a33 LP |
35 | #include "dbus-job.h" |
36 | #include "dbus-manager.h" | |
37 | #include "dbus-unit.h" | |
38 | #include "dbus.h" | |
0e7f5ad9 | 39 | #include "def.h" |
d063a527 | 40 | #include "dirent-util.h" |
400f1a33 | 41 | #include "env-util.h" |
4f5dd394 | 42 | #include "escape.h" |
ec75e8e0 | 43 | #include "event-util.h" |
89711996 | 44 | #include "exec-util.h" |
d3070fbd | 45 | #include "execute.h" |
400f1a33 | 46 | #include "exit-status.h" |
3ffd4af2 | 47 | #include "fd-util.h" |
0d39fa9c | 48 | #include "fileio.h" |
385093b7 | 49 | #include "generator-setup.h" |
60918275 | 50 | #include "hashmap.h" |
9e5fd717 | 51 | #include "inotify-util.h" |
5cfa33e0 | 52 | #include "install.h" |
19d22d43 | 53 | #include "io-util.h" |
d3070fbd | 54 | #include "label.h" |
d904afc7 | 55 | #include "load-fragment.h" |
786d19fd | 56 | #include "locale-setup.h" |
16354eff | 57 | #include "log.h" |
400f1a33 | 58 | #include "macro.h" |
3ffd4af2 | 59 | #include "manager.h" |
2a341bb9 | 60 | #include "manager-dump.h" |
a01ba4b2 | 61 | #include "manager-serialize.h" |
0a970718 | 62 | #include "memory-util.h" |
35cd0ba5 | 63 | #include "mkdir-label.h" |
6bedfcbb | 64 | #include "parse-util.h" |
400f1a33 LP |
65 | #include "path-lookup.h" |
66 | #include "path-util.h" | |
67 | #include "process-util.h" | |
ea430986 | 68 | #include "ratelimit.h" |
31ce987c | 69 | #include "rlimit-util.h" |
c6878637 | 70 | #include "rm-rf.h" |
45ae2f72 | 71 | #include "selinux-util.h" |
400f1a33 | 72 | #include "signal-util.h" |
57b7a260 | 73 | #include "socket-util.h" |
514f4ef5 | 74 | #include "special.h" |
8fcde012 | 75 | #include "stat-util.h" |
8b43440b | 76 | #include "string-table.h" |
07630cea | 77 | #include "string-util.h" |
400f1a33 | 78 | #include "strv.h" |
dd1db3c2 | 79 | #include "strxcpyx.h" |
6123dfaa | 80 | #include "sysctl-util.h" |
a6ecbf83 | 81 | #include "syslog-util.h" |
400f1a33 LP |
82 | #include "terminal-util.h" |
83 | #include "time-util.h" | |
84 | #include "transaction.h" | |
63e8df04 | 85 | #include "uid-range.h" |
affb60b1 | 86 | #include "umask-util.h" |
400f1a33 | 87 | #include "unit-name.h" |
00d9ef85 | 88 | #include "user-util.h" |
5dc4c17f | 89 | #include "virt.h" |
e96d6be7 | 90 | #include "watchdog.h" |
60918275 | 91 | |
a47806fa | 92 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 93 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 94 | |
03b717a3 | 95 | /* Initial delay and the interval for printing status messages about running jobs */ |
1b4154a8 ZJS |
96 | #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC) |
97 | #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC) | |
fd08a840 | 98 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) |
03b717a3 MS |
99 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
100 | ||
5238e957 | 101 | /* 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 |
102 | * the queue gets more empty. */ |
103 | #define MANAGER_BUS_BUSY_THRESHOLD 1024LU | |
104 | ||
105 | /* How many units and jobs to process of the bus queue before returning to the event loop. */ | |
106 | #define MANAGER_BUS_MESSAGE_BUDGET 100U | |
107 | ||
718db961 | 108 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 109 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
110 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
111 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
112 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 113 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 114 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 115 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
575b300b | 116 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata); |
bbf5fd8e | 117 | static int manager_dispatch_timezone_change(sd_event_source *source, const struct inotify_event *event, void *userdata); |
64691d20 | 118 | static int manager_run_environment_generators(Manager *m); |
e801700e | 119 | static int manager_run_generators(Manager *m); |
06a4eb07 | 120 | static void manager_vacuum(Manager *m); |
718db961 | 121 | |
1b4154a8 | 122 | static usec_t manager_watch_jobs_next_time(Manager *m) { |
3889fc6f ZJS |
123 | usec_t timeout; |
124 | ||
125 | if (MANAGER_IS_USER(m)) | |
126 | /* Let the user manager without a timeout show status quickly, so the system manager can make | |
127 | * use of it, if it wants to. */ | |
128 | timeout = JOBS_IN_PROGRESS_WAIT_USEC * 2 / 3; | |
129 | else if (show_status_on(m->show_status)) | |
130 | /* When status is on, just use the usual timeout. */ | |
131 | timeout = JOBS_IN_PROGRESS_WAIT_USEC; | |
132 | else | |
133 | timeout = JOBS_IN_PROGRESS_QUIET_WAIT_USEC; | |
134 | ||
135 | return usec_add(now(CLOCK_MONOTONIC), timeout); | |
1b4154a8 ZJS |
136 | } |
137 | ||
2ae56591 | 138 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 139 | usec_t next; |
cfa9677b | 140 | int r; |
e5723c89 | 141 | |
718db961 | 142 | assert(m); |
03b717a3 | 143 | |
42bf1ae1 FB |
144 | /* We do not want to show the cylon animation if the user |
145 | * needs to confirm service executions otherwise confirmation | |
146 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 147 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
148 | return; |
149 | ||
718db961 | 150 | if (m->jobs_in_progress_event_source) |
2ae56591 | 151 | return; |
03b717a3 | 152 | |
1b4154a8 | 153 | next = manager_watch_jobs_next_time(m); |
cfa9677b | 154 | r = sd_event_add_time( |
6a0f1f6d LP |
155 | m->event, |
156 | &m->jobs_in_progress_event_source, | |
157 | CLOCK_MONOTONIC, | |
158 | next, 0, | |
159 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
160 | if (r < 0) |
161 | return; | |
7dfbe2e3 TG |
162 | |
163 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
164 | } |
165 | ||
fbd0b64f | 166 | #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL)) |
03b717a3 | 167 | |
03b717a3 MS |
168 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
169 | char *p = buffer; | |
170 | ||
171 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
172 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
173 | ||
174 | if (pos > 1) { | |
6282c859 MS |
175 | if (pos > 2) |
176 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
177 | if (log_get_show_color()) |
178 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
179 | *p++ = '*'; |
180 | } | |
181 | ||
182 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
183 | if (log_get_show_color()) |
184 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
185 | *p++ = '*'; |
186 | } | |
187 | ||
64c3610b FB |
188 | if (log_get_show_color()) |
189 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
190 | |
191 | if (pos < width) { | |
64c3610b FB |
192 | if (log_get_show_color()) |
193 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 194 | *p++ = '*'; |
6282c859 MS |
195 | if (pos < width-1) |
196 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
197 | if (log_get_show_color()) |
198 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 199 | } |
03b717a3 MS |
200 | } |
201 | ||
1addc46c | 202 | static void manager_flip_auto_status(Manager *m, bool enable, const char *reason) { |
f755e3b7 LP |
203 | assert(m); |
204 | ||
cb8ccb22 ZJS |
205 | if (enable) { |
206 | if (m->show_status == SHOW_STATUS_AUTO) | |
7365a296 | 207 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY, reason); |
cb8ccb22 ZJS |
208 | } else { |
209 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
7365a296 | 210 | manager_set_show_status(m, SHOW_STATUS_AUTO, reason); |
cb8ccb22 ZJS |
211 | } |
212 | } | |
213 | ||
03b717a3 | 214 | static void manager_print_jobs_in_progress(Manager *m) { |
03b717a3 | 215 | Job *j; |
03b717a3 MS |
216 | unsigned counter = 0, print_nr; |
217 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
218 | unsigned cylon_pos; | |
4c989f89 | 219 | uint64_t timeout = 0; |
03b717a3 | 220 | |
718db961 | 221 | assert(m); |
9c3349e2 | 222 | assert(m->n_running_jobs > 0); |
718db961 | 223 | |
7365a296 | 224 | manager_flip_auto_status(m, true, "delay"); |
d450b6f2 | 225 | |
03b717a3 MS |
226 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
227 | ||
90e74a66 | 228 | HASHMAP_FOREACH(j, m->jobs) |
03b717a3 MS |
229 | if (j->state == JOB_RUNNING && counter++ == print_nr) |
230 | break; | |
231 | ||
e970a72e MS |
232 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
233 | * so the above loop must have succeeded in finding j. */ | |
234 | assert(counter == print_nr + 1); | |
51d122af | 235 | assert(j); |
5a82a91a | 236 | |
03b717a3 MS |
237 | cylon_pos = m->jobs_in_progress_iteration % 14; |
238 | if (cylon_pos >= 8) | |
239 | cylon_pos = 14 - cylon_pos; | |
240 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
241 | ||
8bb310c3 ZJS |
242 | m->jobs_in_progress_iteration++; |
243 | ||
3889fc6f | 244 | char job_of_n[STRLEN("( of ) ") + DECIMAL_STR_MAX(unsigned)*2] = ""; |
5291f26d | 245 | if (m->n_running_jobs > 1) |
3889fc6f | 246 | xsprintf(job_of_n, "(%u of %u) ", counter, m->n_running_jobs); |
03b717a3 | 247 | |
4c989f89 | 248 | (void) job_get_timeout(j, &timeout); |
8bb310c3 | 249 | |
04d232d8 ZJS |
250 | /* We want to use enough information for the user to identify previous lines talking about the same |
251 | * unit, but keep the message as short as possible. So if 'Starting foo.service' or 'Starting | |
3889fc6f | 252 | * foo.service - Description' were used, 'foo.service' is enough here. On the other hand, if we used |
04d232d8 ZJS |
253 | * 'Starting Description' before, then we shall also use 'Description' here. So we pass NULL as the |
254 | * second argument to unit_status_string(). */ | |
255 | const char *ident = unit_status_string(j->unit, NULL); | |
256 | ||
3889fc6f | 257 | const char *time = FORMAT_TIMESPAN(now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
4c989f89 | 258 | const char *limit = timeout > 0 ? FORMAT_TIMESPAN(timeout - j->begin_usec, 1*USEC_PER_SEC) : "no limit"; |
3889fc6f ZJS |
259 | |
260 | if (m->status_unit_format == STATUS_UNIT_FORMAT_DESCRIPTION) | |
261 | /* When using 'Description', we effectively don't have enough space to show the nested status | |
262 | * without ellipsization, so let's not even try. */ | |
263 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
264 | "%sA %s job is running for %s (%s / %s)", | |
265 | job_of_n, | |
266 | job_type_to_string(j->type), | |
267 | ident, | |
268 | time, limit); | |
269 | else { | |
270 | const char *status_text = unit_status_text(j->unit); | |
271 | ||
272 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
273 | "%sJob %s/%s running (%s / %s)%s%s", | |
274 | job_of_n, | |
275 | ident, | |
276 | job_type_to_string(j->type), | |
277 | time, limit, | |
278 | status_text ? ": " : "", | |
279 | strempty(status_text)); | |
280 | } | |
281 | ||
282 | sd_notifyf(false, | |
283 | "STATUS=%sUser job %s/%s running (%s / %s)...", | |
284 | job_of_n, | |
285 | ident, | |
286 | job_type_to_string(j->type), | |
287 | time, limit); | |
288 | m->status_ready = false; | |
03b717a3 MS |
289 | } |
290 | ||
e46b13c8 | 291 | static int have_ask_password(void) { |
c2b2df60 | 292 | _cleanup_closedir_ DIR *dir = NULL; |
e46b13c8 ZJS |
293 | |
294 | dir = opendir("/run/systemd/ask-password"); | |
295 | if (!dir) { | |
296 | if (errno == ENOENT) | |
297 | return false; | |
298 | else | |
299 | return -errno; | |
300 | } | |
301 | ||
c7f0d9e5 | 302 | FOREACH_DIRENT_ALL(de, dir, return -errno) |
e46b13c8 ZJS |
303 | if (startswith(de->d_name, "ask.")) |
304 | return true; | |
8fb3f009 | 305 | return false; |
e46b13c8 ZJS |
306 | } |
307 | ||
308 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
309 | int fd, uint32_t revents, void *userdata) { | |
310 | Manager *m = userdata; | |
311 | ||
312 | assert(m); | |
313 | ||
665dfe93 | 314 | (void) flush_fd(fd); |
e46b13c8 ZJS |
315 | |
316 | m->have_ask_password = have_ask_password(); | |
317 | if (m->have_ask_password < 0) | |
318 | /* Log error but continue. Negative have_ask_password | |
319 | * is treated as unknown status. */ | |
c33b3297 | 320 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
321 | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static void manager_close_ask_password(Manager *m) { | |
326 | assert(m); | |
327 | ||
5dcadb4c | 328 | m->ask_password_event_source = sd_event_source_disable_unref(m->ask_password_event_source); |
90990e28 | 329 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
330 | m->have_ask_password = -EINVAL; |
331 | } | |
332 | ||
333 | static int manager_check_ask_password(Manager *m) { | |
334 | int r; | |
335 | ||
336 | assert(m); | |
337 | ||
338 | if (!m->ask_password_event_source) { | |
339 | assert(m->ask_password_inotify_fd < 0); | |
340 | ||
17e4b070 | 341 | (void) mkdir_p_label("/run/systemd/ask-password", 0755); |
e46b13c8 ZJS |
342 | |
343 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 | 344 | if (m->ask_password_inotify_fd < 0) |
330b8fb3 | 345 | return log_error_errno(errno, "Failed to create inotify object: %m"); |
e46b13c8 | 346 | |
27c3112d FB |
347 | r = inotify_add_watch_and_warn(m->ask_password_inotify_fd, |
348 | "/run/systemd/ask-password", | |
349 | IN_CREATE|IN_DELETE|IN_MOVE); | |
350 | if (r < 0) { | |
e46b13c8 | 351 | manager_close_ask_password(m); |
27c3112d | 352 | return r; |
e46b13c8 ZJS |
353 | } |
354 | ||
355 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
356 | m->ask_password_inotify_fd, EPOLLIN, | |
357 | manager_dispatch_ask_password_fd, m); | |
358 | if (r < 0) { | |
df3d3bdf | 359 | log_error_errno(r, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 | 360 | manager_close_ask_password(m); |
df3d3bdf | 361 | return r; |
e46b13c8 ZJS |
362 | } |
363 | ||
7dfbe2e3 TG |
364 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
365 | ||
e46b13c8 ZJS |
366 | /* Queries might have been added meanwhile... */ |
367 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
368 | m->ask_password_inotify_fd, EPOLLIN, m); | |
369 | } | |
370 | ||
371 | return m->have_ask_password; | |
372 | } | |
373 | ||
31a7eb86 | 374 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
375 | int r; |
376 | ||
718db961 LP |
377 | assert(m); |
378 | ||
379 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
380 | return 0; |
381 | ||
382 | if (m->idle_pipe[2] < 0) | |
383 | return 0; | |
384 | ||
151b9b96 | 385 | 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 |
386 | if (r < 0) |
387 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 388 | |
7dfbe2e3 TG |
389 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
390 | ||
31a7eb86 | 391 | return 0; |
31a7eb86 ZJS |
392 | } |
393 | ||
718db961 LP |
394 | static void manager_close_idle_pipe(Manager *m) { |
395 | assert(m); | |
31a7eb86 | 396 | |
5dcadb4c | 397 | m->idle_pipe_event_source = sd_event_source_disable_unref(m->idle_pipe_event_source); |
cd72bd8a | 398 | |
3d94f76c LP |
399 | safe_close_pair(m->idle_pipe); |
400 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
401 | } |
402 | ||
8742514c | 403 | static int manager_setup_time_change(Manager *m) { |
718db961 | 404 | int r; |
b92bea5d | 405 | |
718db961 | 406 | assert(m); |
8742514c | 407 | |
638cece4 | 408 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
409 | return 0; |
410 | ||
5dcadb4c | 411 | m->time_change_event_source = sd_event_source_disable_unref(m->time_change_event_source); |
7feedd18 | 412 | |
ec75e8e0 | 413 | r = event_add_time_change(m->event, &m->time_change_event_source, manager_dispatch_time_change_fd, m); |
23bbb0de MS |
414 | if (r < 0) |
415 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 416 | |
a5cc7e5a LP |
417 | /* Schedule this slightly earlier than the .timer event sources */ |
418 | r = sd_event_source_set_priority(m->time_change_event_source, SD_EVENT_PRIORITY_NORMAL-1); | |
419 | if (r < 0) | |
420 | return log_error_errno(r, "Failed to set priority of time change event sources: %m"); | |
421 | ||
8742514c LP |
422 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
bbf5fd8e LP |
427 | static int manager_read_timezone_stat(Manager *m) { |
428 | struct stat st; | |
429 | bool changed; | |
430 | ||
431 | assert(m); | |
432 | ||
433 | /* Read the current stat() data of /etc/localtime so that we detect changes */ | |
434 | if (lstat("/etc/localtime", &st) < 0) { | |
435 | log_debug_errno(errno, "Failed to stat /etc/localtime, ignoring: %m"); | |
436 | changed = m->etc_localtime_accessible; | |
437 | m->etc_localtime_accessible = false; | |
438 | } else { | |
439 | usec_t k; | |
440 | ||
441 | k = timespec_load(&st.st_mtim); | |
442 | changed = !m->etc_localtime_accessible || k != m->etc_localtime_mtime; | |
443 | ||
444 | m->etc_localtime_mtime = k; | |
445 | m->etc_localtime_accessible = true; | |
446 | } | |
447 | ||
448 | return changed; | |
449 | } | |
450 | ||
451 | static int manager_setup_timezone_change(Manager *m) { | |
a5cc7e5a | 452 | _cleanup_(sd_event_source_unrefp) sd_event_source *new_event = NULL; |
bbf5fd8e LP |
453 | int r; |
454 | ||
455 | assert(m); | |
456 | ||
638cece4 | 457 | if (MANAGER_IS_TEST_RUN(m)) |
bbf5fd8e LP |
458 | return 0; |
459 | ||
460 | /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even | |
461 | * though another link might be kept), renames, and file close operations after writing. Note we don't bother | |
462 | * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count | |
463 | * went to zero and all fds to it are closed. | |
464 | * | |
465 | * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases | |
466 | * correctly. | |
467 | * | |
468 | * Note that we create the new event source first here, before releasing the old one. This should optimize | |
469 | * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */ | |
470 | ||
471 | r = sd_event_add_inotify(m->event, &new_event, "/etc/localtime", | |
472 | IN_ATTRIB|IN_MOVE_SELF|IN_CLOSE_WRITE|IN_DONT_FOLLOW, manager_dispatch_timezone_change, m); | |
0cb21d8c LP |
473 | if (r == -ENOENT) { |
474 | /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by | |
475 | * O_CREATE or by rename() */ | |
476 | ||
477 | log_debug_errno(r, "/etc/localtime doesn't exist yet, watching /etc instead."); | |
bbf5fd8e LP |
478 | r = sd_event_add_inotify(m->event, &new_event, "/etc", |
479 | IN_CREATE|IN_MOVED_TO|IN_ONLYDIR, manager_dispatch_timezone_change, m); | |
0cb21d8c | 480 | } |
bbf5fd8e LP |
481 | if (r < 0) |
482 | return log_error_errno(r, "Failed to create timezone change event source: %m"); | |
483 | ||
a5cc7e5a LP |
484 | /* Schedule this slightly earlier than the .timer event sources */ |
485 | r = sd_event_source_set_priority(new_event, SD_EVENT_PRIORITY_NORMAL-1); | |
486 | if (r < 0) | |
487 | return log_error_errno(r, "Failed to set priority of timezone change event sources: %m"); | |
488 | ||
bbf5fd8e | 489 | sd_event_source_unref(m->timezone_change_event_source); |
a5cc7e5a | 490 | m->timezone_change_event_source = TAKE_PTR(new_event); |
bbf5fd8e LP |
491 | |
492 | return 0; | |
493 | } | |
494 | ||
80876c20 | 495 | static int enable_special_signals(Manager *m) { |
718db961 | 496 | _cleanup_close_ int fd = -1; |
80876c20 LP |
497 | |
498 | assert(m); | |
499 | ||
638cece4 | 500 | if (MANAGER_IS_TEST_RUN(m)) |
37453b3a EV |
501 | return 0; |
502 | ||
a41b539e | 503 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
504 | * this will fail with EPERM (older) or EINVAL (newer), so |
505 | * ignore that. */ | |
4c701096 | 506 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 507 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 508 | |
a41b539e LP |
509 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
510 | if (fd < 0) { | |
511 | /* Support systems without virtual console */ | |
512 | if (fd != -ENOENT) | |
56f64d95 | 513 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 514 | } else { |
80876c20 LP |
515 | /* Enable that we get SIGWINCH on kbrequest */ |
516 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 517 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
518 | } |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
8750ac02 ZJS |
523 | #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1) |
524 | ||
ce578209 | 525 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
526 | struct sigaction sa = { |
527 | .sa_handler = SIG_DFL, | |
528 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
529 | }; | |
718db961 LP |
530 | sigset_t mask; |
531 | int r; | |
60918275 | 532 | |
ce578209 LP |
533 | assert(m); |
534 | ||
57c0c30e LP |
535 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
536 | ||
4dffec14 LP |
537 | /* We make liberal use of realtime signals here. On |
538 | * Linux/glibc we have 30 of them (with the exception of Linux | |
539 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
540 | * (aka SIGRTMAX). */ | |
7d793605 | 541 | |
4dffec14 | 542 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
543 | sigset_add_many(&mask, |
544 | SIGCHLD, /* Child died */ | |
545 | SIGTERM, /* Reexecute daemon */ | |
546 | SIGHUP, /* Reload configuration */ | |
54d04cd1 | 547 | SIGUSR1, /* systemd: reconnect to D-Bus */ |
7d793605 LP |
548 | SIGUSR2, /* systemd: dump status */ |
549 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
550 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
551 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 552 | |
7d793605 | 553 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 554 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
555 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
556 | SIGRTMIN+3, /* systemd: start halt.target */ | |
557 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
558 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 559 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
560 | |
561 | /* ... space for more special targets ... */ | |
562 | ||
0003d1ab LP |
563 | SIGRTMIN+13, /* systemd: Immediate halt */ |
564 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
565 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
566 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
567 | |
568 | /* ... space for more immediate system state changes ... */ | |
569 | ||
0658666b LP |
570 | SIGRTMIN+20, /* systemd: enable status messages */ |
571 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
572 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
573 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 574 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
463aef23 | 575 | SIGRTMIN+25, /* systemd: reexecute manager */ |
4dffec14 | 576 | |
8750ac02 ZJS |
577 | /* Apparently Linux on hppa had fewer RT signals until v3.18, |
578 | * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered, | |
579 | * see commit v3.17-7614-g1f25df2eff. | |
580 | * | |
581 | * We cannot unconditionally make use of those signals here, | |
582 | * so let's use a runtime check. Since these commands are | |
583 | * accessible by different means and only really a safety | |
584 | * net, the missing functionality on hppa shouldn't matter. | |
585 | */ | |
586 | ||
587 | RTSIG_IF_AVAILABLE(SIGRTMIN+26), /* systemd: set log target to journal-or-kmsg */ | |
588 | RTSIG_IF_AVAILABLE(SIGRTMIN+27), /* systemd: set log target to console */ | |
589 | RTSIG_IF_AVAILABLE(SIGRTMIN+28), /* systemd: set log target to kmsg */ | |
590 | RTSIG_IF_AVAILABLE(SIGRTMIN+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */ | |
4dffec14 LP |
591 | |
592 | /* ... one free signal here SIGRTMIN+30 ... */ | |
7d793605 | 593 | -1); |
ce578209 LP |
594 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
595 | ||
718db961 LP |
596 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
597 | if (m->signal_fd < 0) | |
ce578209 LP |
598 | return -errno; |
599 | ||
151b9b96 | 600 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
601 | if (r < 0) |
602 | return r; | |
ce578209 | 603 | |
7dfbe2e3 TG |
604 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
605 | ||
d8fdc620 LP |
606 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
607 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
608 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
609 | * status information before detecting that there's no process in a cgroup. */ | |
610 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
611 | if (r < 0) |
612 | return r; | |
613 | ||
463d0d15 | 614 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 615 | return enable_special_signals(m); |
e1414003 | 616 | |
ce578209 LP |
617 | return 0; |
618 | } | |
619 | ||
1ad6e8b3 | 620 | static char** sanitize_environment(char **l) { |
f069efb4 | 621 | |
47cf8ff2 | 622 | /* Let's remove some environment variables that we need ourselves to communicate with our clients */ |
f069efb4 | 623 | strv_env_unset_many( |
1ad6e8b3 | 624 | l, |
8047ac8f LP |
625 | "CACHE_DIRECTORY", |
626 | "CONFIGURATION_DIRECTORY", | |
bb0c0d6f | 627 | "CREDENTIALS_DIRECTORY", |
47cf8ff2 LP |
628 | "EXIT_CODE", |
629 | "EXIT_STATUS", | |
630 | "INVOCATION_ID", | |
631 | "JOURNAL_STREAM", | |
632 | "LISTEN_FDNAMES", | |
633 | "LISTEN_FDS", | |
634 | "LISTEN_PID", | |
8047ac8f | 635 | "LOGS_DIRECTORY", |
f069efb4 LP |
636 | "MAINPID", |
637 | "MANAGERPID", | |
47cf8ff2 | 638 | "NOTIFY_SOCKET", |
dcf3c3c3 | 639 | "PIDFILE", |
47cf8ff2 LP |
640 | "REMOTE_ADDR", |
641 | "REMOTE_PORT", | |
8047ac8f | 642 | "RUNTIME_DIRECTORY", |
47cf8ff2 | 643 | "SERVICE_RESULT", |
8047ac8f | 644 | "STATE_DIRECTORY", |
f069efb4 LP |
645 | "WATCHDOG_PID", |
646 | "WATCHDOG_USEC", | |
647 | NULL); | |
47cf8ff2 LP |
648 | |
649 | /* Let's order the environment alphabetically, just to make it pretty */ | |
305757d8 | 650 | return strv_sort(l); |
f069efb4 LP |
651 | } |
652 | ||
79a224c4 | 653 | int manager_default_environment(Manager *m) { |
db11487d ZJS |
654 | int r; |
655 | ||
71ecc858 LP |
656 | assert(m); |
657 | ||
1ad6e8b3 LP |
658 | m->transient_environment = strv_free(m->transient_environment); |
659 | ||
463d0d15 | 660 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
661 | /* The system manager always starts with a clean |
662 | * environment for its children. It does not import | |
71cb7d30 | 663 | * the kernel's or the parents' exported variables. |
e21fea24 | 664 | * |
71cb7d30 | 665 | * The initial passed environment is untouched to keep |
e21fea24 KS |
666 | * /proc/self/environ valid; it is used for tagging |
667 | * the init process inside containers. */ | |
1ad6e8b3 | 668 | m->transient_environment = strv_new("PATH=" DEFAULT_PATH); |
db11487d ZJS |
669 | if (!m->transient_environment) |
670 | return log_oom(); | |
e21fea24 KS |
671 | |
672 | /* Import locale variables LC_*= from configuration */ | |
1ad6e8b3 | 673 | (void) locale_setup(&m->transient_environment); |
db11487d | 674 | } else { |
aaf057c4 | 675 | /* The user manager passes its own environment along to its children, except for $PATH. */ |
1ad6e8b3 | 676 | m->transient_environment = strv_copy(environ); |
db11487d ZJS |
677 | if (!m->transient_environment) |
678 | return log_oom(); | |
679 | ||
aaf057c4 | 680 | r = strv_env_replace_strdup(&m->transient_environment, "PATH=" DEFAULT_USER_PATH); |
db11487d ZJS |
681 | if (r < 0) |
682 | return log_oom(); | |
db11487d | 683 | } |
8b55b8c4 | 684 | |
1ad6e8b3 | 685 | sanitize_environment(m->transient_environment); |
9d5a3757 | 686 | |
e21fea24 | 687 | return 0; |
71ecc858 LP |
688 | } |
689 | ||
3536f49e YW |
690 | static int manager_setup_prefix(Manager *m) { |
691 | struct table_entry { | |
692 | uint64_t type; | |
693 | const char *suffix; | |
694 | }; | |
695 | ||
72fd1768 | 696 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
697 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
698 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
699 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
700 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
3536f49e YW |
701 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, |
702 | }; | |
703 | ||
72fd1768 | 704 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
705 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
706 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
707 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, | |
708 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
709 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
3536f49e YW |
710 | }; |
711 | ||
3536f49e YW |
712 | assert(m); |
713 | ||
24b45970 ZJS |
714 | const struct table_entry *p = MANAGER_IS_SYSTEM(m) ? paths_system : paths_user; |
715 | int r; | |
3536f49e | 716 | |
24b45970 | 717 | for (ExecDirectoryType i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
51327bcc | 718 | r = sd_path_lookup(p[i].type, p[i].suffix, &m->prefix[i]); |
3536f49e | 719 | if (r < 0) |
998df7ce ZJS |
720 | return log_warning_errno(r, "Failed to lookup %s path: %m", |
721 | exec_directory_type_to_string(i)); | |
3536f49e YW |
722 | } |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
e8630e69 ZJS |
727 | static void manager_free_unit_name_maps(Manager *m) { |
728 | m->unit_id_map = hashmap_free(m->unit_id_map); | |
729 | m->unit_name_map = hashmap_free(m->unit_name_map); | |
3fb2326f | 730 | m->unit_path_cache = set_free(m->unit_path_cache); |
c2911d48 | 731 | m->unit_cache_timestamp_hash = 0; |
e8630e69 ZJS |
732 | } |
733 | ||
279d81dd LP |
734 | static int manager_setup_run_queue(Manager *m) { |
735 | int r; | |
736 | ||
737 | assert(m); | |
738 | assert(!m->run_queue_event_source); | |
739 | ||
740 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
741 | if (r < 0) | |
742 | return r; | |
743 | ||
744 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
745 | if (r < 0) | |
746 | return r; | |
747 | ||
748 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
749 | if (r < 0) | |
750 | return r; | |
751 | ||
752 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
753 | ||
754 | return 0; | |
755 | } | |
756 | ||
575b300b LP |
757 | static int manager_setup_sigchld_event_source(Manager *m) { |
758 | int r; | |
759 | ||
760 | assert(m); | |
761 | assert(!m->sigchld_event_source); | |
762 | ||
763 | r = sd_event_add_defer(m->event, &m->sigchld_event_source, manager_dispatch_sigchld, m); | |
764 | if (r < 0) | |
765 | return r; | |
766 | ||
767 | r = sd_event_source_set_priority(m->sigchld_event_source, SD_EVENT_PRIORITY_NORMAL-7); | |
768 | if (r < 0) | |
769 | return r; | |
770 | ||
771 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); | |
772 | if (r < 0) | |
773 | return r; | |
774 | ||
775 | (void) sd_event_source_set_description(m->sigchld_event_source, "manager-sigchld"); | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
2ad591a3 LP |
780 | static int manager_find_credentials_dirs(Manager *m) { |
781 | const char *e; | |
782 | int r; | |
783 | ||
784 | assert(m); | |
785 | ||
786 | r = get_credentials_dir(&e); | |
787 | if (r < 0) { | |
788 | if (r != -ENXIO) | |
789 | log_debug_errno(r, "Failed to determine credentials directory, ignoring: %m"); | |
790 | } else { | |
791 | m->received_credentials_directory = strdup(e); | |
792 | if (!m->received_credentials_directory) | |
793 | return -ENOMEM; | |
794 | } | |
795 | ||
796 | r = get_encrypted_credentials_dir(&e); | |
797 | if (r < 0) { | |
798 | if (r != -ENXIO) | |
799 | log_debug_errno(r, "Failed to determine encrypted credentials directory, ignoring: %m"); | |
800 | } else { | |
801 | m->received_encrypted_credentials_directory = strdup(e); | |
802 | if (!m->received_encrypted_credentials_directory) | |
803 | return -ENOMEM; | |
804 | } | |
805 | ||
806 | return 0; | |
807 | } | |
808 | ||
b380b643 | 809 | int manager_new(LookupScope scope, ManagerTestRunFlags test_run_flags, Manager **_m) { |
c70cac54 | 810 | _cleanup_(manager_freep) Manager *m = NULL; |
e3dd987c | 811 | int r; |
8e274523 LP |
812 | |
813 | assert(_m); | |
b380b643 | 814 | assert(IN_SET(scope, LOOKUP_SCOPE_SYSTEM, LOOKUP_SCOPE_USER)); |
ce578209 | 815 | |
3ad228ce | 816 | m = new(Manager, 1); |
915b3753 | 817 | if (!m) |
8e274523 | 818 | return -ENOMEM; |
60918275 | 819 | |
3ad228ce LP |
820 | *m = (Manager) { |
821 | .unit_file_scope = scope, | |
822 | .objective = _MANAGER_OBJECTIVE_INVALID, | |
823 | ||
36cf4507 ZJS |
824 | .status_unit_format = STATUS_UNIT_FORMAT_DEFAULT, |
825 | ||
3ad228ce LP |
826 | .default_timer_accuracy_usec = USEC_PER_MINUTE, |
827 | .default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT, | |
828 | .default_tasks_accounting = true, | |
3a0f06c4 | 829 | .default_tasks_max = TASKS_MAX_UNSET, |
3ad228ce LP |
830 | .default_timeout_start_usec = DEFAULT_TIMEOUT_USEC, |
831 | .default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC, | |
832 | .default_restart_usec = DEFAULT_RESTART_USEC, | |
833 | ||
834 | .original_log_level = -1, | |
835 | .original_log_target = _LOG_TARGET_INVALID, | |
836 | ||
986935cf FB |
837 | .watchdog_overridden[WATCHDOG_RUNTIME] = USEC_INFINITY, |
838 | .watchdog_overridden[WATCHDOG_REBOOT] = USEC_INFINITY, | |
839 | .watchdog_overridden[WATCHDOG_KEXEC] = USEC_INFINITY, | |
5717062e | 840 | .watchdog_overridden[WATCHDOG_PRETIMEOUT] = USEC_INFINITY, |
986935cf | 841 | |
44a41954 FB |
842 | .show_status_overridden = _SHOW_STATUS_INVALID, |
843 | ||
3ad228ce LP |
844 | .notify_fd = -1, |
845 | .cgroups_agent_fd = -1, | |
846 | .signal_fd = -1, | |
3ad228ce LP |
847 | .user_lookup_fds = { -1, -1 }, |
848 | .private_listen_fd = -1, | |
849 | .dev_autofs_fd = -1, | |
850 | .cgroup_inotify_fd = -1, | |
851 | .pin_cgroupfs_fd = -1, | |
852 | .ask_password_inotify_fd = -1, | |
853 | .idle_pipe = { -1, -1, -1, -1}, | |
854 | ||
855 | /* start as id #1, so that we can leave #0 around as "null-like" value */ | |
856 | .current_job_id = 1, | |
857 | ||
858 | .have_ask_password = -EINVAL, /* we don't know */ | |
859 | .first_boot = -1, | |
860 | .test_run_flags = test_run_flags, | |
afcfaa69 LP |
861 | |
862 | .default_oom_policy = OOM_STOP, | |
3ad228ce | 863 | }; |
80876c20 | 864 | |
349cc4a5 | 865 | #if ENABLE_EFI |
463d0d15 | 866 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
867 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
868 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
869 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
870 | #endif |
871 | ||
f2341e0a | 872 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
873 | if (MANAGER_IS_SYSTEM(m)) { |
874 | m->unit_log_field = "UNIT="; | |
875 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
876 | |
877 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 878 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
879 | } else { |
880 | m->unit_log_field = "USER_UNIT="; | |
881 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
882 | |
883 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 884 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 885 | } |
f2341e0a | 886 | |
2e5c94b9 | 887 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
8c227e7f | 888 | m->ctrl_alt_del_ratelimit = (RateLimit) { .interval = 2 * USEC_PER_SEC, .burst = 7 }; |
2e5c94b9 | 889 | |
e21fea24 KS |
890 | r = manager_default_environment(m); |
891 | if (r < 0) | |
c70cac54 | 892 | return r; |
1137a57c | 893 | |
d5099efc | 894 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 895 | if (r < 0) |
c70cac54 | 896 | return r; |
60918275 | 897 | |
548f6937 | 898 | r = hashmap_ensure_allocated(&m->cgroup_unit, &path_hash_ops); |
718db961 | 899 | if (r < 0) |
c70cac54 | 900 | return r; |
9152c765 | 901 | |
d5099efc | 902 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 903 | if (r < 0) |
c70cac54 | 904 | return r; |
05e343b7 | 905 | |
da8e1782 MO |
906 | r = prioq_ensure_allocated(&m->run_queue, compare_job_priority); |
907 | if (r < 0) | |
908 | return r; | |
909 | ||
e8112e67 | 910 | r = manager_setup_prefix(m); |
718db961 | 911 | if (r < 0) |
c70cac54 | 912 | return r; |
8742514c | 913 | |
2ad591a3 LP |
914 | r = manager_find_credentials_dirs(m); |
915 | if (r < 0) | |
916 | return r; | |
bb0c0d6f | 917 | |
e8112e67 | 918 | r = sd_event_default(&m->event); |
8742514c | 919 | if (r < 0) |
c70cac54 | 920 | return r; |
9152c765 | 921 | |
e8112e67 | 922 | r = manager_setup_run_queue(m); |
a1d32bac | 923 | if (r < 0) |
c70cac54 | 924 | return r; |
8e274523 | 925 | |
5dd2f5ff | 926 | if (FLAGS_SET(test_run_flags, MANAGER_TEST_RUN_MINIMAL)) { |
e8112e67 ZJS |
927 | m->cgroup_root = strdup(""); |
928 | if (!m->cgroup_root) | |
929 | return -ENOMEM; | |
930 | } else { | |
931 | r = manager_setup_signals(m); | |
932 | if (r < 0) | |
933 | return r; | |
8c47c732 | 934 | |
e8112e67 ZJS |
935 | r = manager_setup_cgroup(m); |
936 | if (r < 0) | |
937 | return r; | |
575b300b | 938 | |
e8112e67 ZJS |
939 | r = manager_setup_time_change(m); |
940 | if (r < 0) | |
941 | return r; | |
9670d583 | 942 | |
bbf5fd8e LP |
943 | r = manager_read_timezone_stat(m); |
944 | if (r < 0) | |
945 | return r; | |
946 | ||
ea5c5f68 | 947 | (void) manager_setup_timezone_change(m); |
bbf5fd8e | 948 | |
e8112e67 ZJS |
949 | r = manager_setup_sigchld_event_source(m); |
950 | if (r < 0) | |
951 | return r; | |
b1994387 ILG |
952 | |
953 | #if HAVE_LIBBPF | |
ba187c9c | 954 | if (MANAGER_IS_SYSTEM(m) && lsm_bpf_supported(/* initialize = */ true)) { |
b1994387 ILG |
955 | r = lsm_bpf_setup(m); |
956 | if (r < 0) | |
299d9417 | 957 | log_warning_errno(r, "Failed to setup LSM BPF, ignoring: %m"); |
b1994387 ILG |
958 | } |
959 | #endif | |
e8112e67 | 960 | } |
e27fe688 | 961 | |
2f8c48b6 AZ |
962 | if (test_run_flags == 0) { |
963 | if (MANAGER_IS_SYSTEM(m)) | |
964 | r = mkdir_label("/run/systemd/units", 0755); | |
965 | else { | |
966 | _cleanup_free_ char *units_path = NULL; | |
967 | r = xdg_user_runtime_dir(&units_path, "/systemd/units"); | |
968 | if (r < 0) | |
969 | return r; | |
970 | r = mkdir_p_label(units_path, 0755); | |
971 | } | |
972 | ||
d3070fbd | 973 | if (r < 0 && r != -EEXIST) |
c70cac54 | 974 | return r; |
d3070fbd LP |
975 | } |
976 | ||
e27fe688 LP |
977 | m->taint_usr = |
978 | !in_initrd() && | |
db55bbf2 | 979 | dir_is_empty("/usr", /* ignore_hidden_or_backup= */ false) > 0; |
e27fe688 | 980 | |
232f6754 ZJS |
981 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
982 | * since they might have gotten serialized across the reexec. */ | |
3536f49e | 983 | |
1cc6c93a YW |
984 | *_m = TAKE_PTR(m); |
985 | ||
8e274523 | 986 | return 0; |
60918275 LP |
987 | } |
988 | ||
d86f9d52 | 989 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 990 | int r; |
d86f9d52 | 991 | |
638cece4 | 992 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
993 | return 0; |
994 | ||
d86f9d52 LP |
995 | if (m->notify_fd < 0) { |
996 | _cleanup_close_ int fd = -1; | |
f36a9d59 ZJS |
997 | union sockaddr_union sa; |
998 | socklen_t sa_len; | |
d86f9d52 LP |
999 | |
1000 | /* First free all secondary fields */ | |
a1e58e8e | 1001 | m->notify_socket = mfree(m->notify_socket); |
5dcadb4c | 1002 | m->notify_event_source = sd_event_source_disable_unref(m->notify_event_source); |
d86f9d52 LP |
1003 | |
1004 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
1005 | if (fd < 0) |
1006 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 1007 | |
a47806fa LP |
1008 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
1009 | ||
b910cc72 | 1010 | m->notify_socket = path_join(m->prefix[EXEC_DIRECTORY_RUNTIME], "systemd/notify"); |
498e87d6 LP |
1011 | if (!m->notify_socket) |
1012 | return log_oom(); | |
1013 | ||
f36a9d59 ZJS |
1014 | r = sockaddr_un_set_path(&sa.un, m->notify_socket); |
1015 | if (r < 0) | |
1016 | return log_error_errno(r, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", | |
1017 | m->notify_socket); | |
1018 | sa_len = r; | |
15a3e96f | 1019 | |
498e87d6 | 1020 | (void) mkdir_parents_label(m->notify_socket, 0755); |
fbda85b0 | 1021 | (void) sockaddr_un_unlink(&sa.un); |
7181dbdb | 1022 | |
45ae2f72 | 1023 | r = mac_selinux_bind(fd, &sa.sa, sa_len); |
4a62c710 | 1024 | if (r < 0) |
45ae2f72 | 1025 | return log_error_errno(r, "bind(%s) failed: %m", m->notify_socket); |
d86f9d52 | 1026 | |
2ff48e98 | 1027 | r = setsockopt_int(fd, SOL_SOCKET, SO_PASSCRED, true); |
4a62c710 | 1028 | if (r < 0) |
2ff48e98 | 1029 | return log_error_errno(r, "SO_PASSCRED failed: %m"); |
d86f9d52 | 1030 | |
c10d6bdb | 1031 | m->notify_fd = TAKE_FD(fd); |
d86f9d52 LP |
1032 | |
1033 | log_debug("Using notification socket %s", m->notify_socket); | |
1034 | } | |
1035 | ||
1036 | if (!m->notify_event_source) { | |
151b9b96 | 1037 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
1038 | if (r < 0) |
1039 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 1040 | |
d8fdc620 LP |
1041 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
1042 | * service an exit message belongs. */ | |
575b300b | 1043 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-8); |
23bbb0de MS |
1044 | if (r < 0) |
1045 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
1046 | |
1047 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
1048 | } |
1049 | ||
1050 | return 0; | |
1051 | } | |
1052 | ||
d8fdc620 LP |
1053 | static int manager_setup_cgroups_agent(Manager *m) { |
1054 | ||
1055 | static const union sockaddr_union sa = { | |
1056 | .un.sun_family = AF_UNIX, | |
1057 | .un.sun_path = "/run/systemd/cgroups-agent", | |
1058 | }; | |
1059 | int r; | |
1060 | ||
1061 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
1062 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
1063 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
1064 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
1065 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
1066 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
1067 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
1068 | * we thus won't lose messages. | |
1069 | * | |
1070 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
1071 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
1072 | * bus for these messages. */ | |
1073 | ||
638cece4 | 1074 | if (MANAGER_IS_TEST_RUN(m)) |
d8fdc620 LP |
1075 | return 0; |
1076 | ||
1077 | if (!MANAGER_IS_SYSTEM(m)) | |
1078 | return 0; | |
1079 | ||
c22800e4 | 1080 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
1081 | if (r < 0) |
1082 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
1083 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
1084 | return 0; |
1085 | ||
1086 | if (m->cgroups_agent_fd < 0) { | |
1087 | _cleanup_close_ int fd = -1; | |
1088 | ||
1089 | /* First free all secondary fields */ | |
5dcadb4c | 1090 | m->cgroups_agent_event_source = sd_event_source_disable_unref(m->cgroups_agent_event_source); |
d8fdc620 LP |
1091 | |
1092 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1093 | if (fd < 0) | |
1094 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
1095 | ||
1096 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
1097 | ||
155b6876 | 1098 | (void) sockaddr_un_unlink(&sa.un); |
d8fdc620 LP |
1099 | |
1100 | /* Only allow root to connect to this socket */ | |
1101 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 1102 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
1103 | if (r < 0) |
1104 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
1105 | ||
0b7e8b32 | 1106 | m->cgroups_agent_fd = TAKE_FD(fd); |
d8fdc620 LP |
1107 | } |
1108 | ||
1109 | if (!m->cgroups_agent_event_source) { | |
1110 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
1111 | if (r < 0) | |
1112 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
1113 | ||
cbe83389 LP |
1114 | /* Process cgroups notifications early. Note that when the agent notification is received |
1115 | * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than | |
1116 | * that. Also see handling of cgroup inotify for the unified cgroup stuff. */ | |
1117 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-9); | |
d8fdc620 LP |
1118 | if (r < 0) |
1119 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
1120 | ||
1121 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
1122 | } | |
1123 | ||
1124 | return 0; | |
1125 | } | |
1126 | ||
00d9ef85 LP |
1127 | static int manager_setup_user_lookup_fd(Manager *m) { |
1128 | int r; | |
1129 | ||
1130 | assert(m); | |
1131 | ||
1132 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
1133 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
1134 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
1135 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
1136 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
1137 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
1138 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
1139 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
1140 | * this purpose. | |
1141 | * | |
1142 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
1143 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
1144 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
1145 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
1146 | * | |
1147 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
1148 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
1149 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
1150 | ||
1151 | if (m->user_lookup_fds[0] < 0) { | |
1152 | ||
1153 | /* Free all secondary fields */ | |
1154 | safe_close_pair(m->user_lookup_fds); | |
5dcadb4c | 1155 | m->user_lookup_event_source = sd_event_source_disable_unref(m->user_lookup_event_source); |
00d9ef85 LP |
1156 | |
1157 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
1158 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
1159 | ||
1160 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
1161 | } | |
1162 | ||
1163 | if (!m->user_lookup_event_source) { | |
1164 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
1165 | if (r < 0) | |
1166 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
1167 | ||
1168 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
1169 | * resolutions */ | |
67ae4e8d | 1170 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-11); |
00d9ef85 | 1171 | if (r < 0) |
5238e957 | 1172 | return log_error_errno(errno, "Failed to set priority of user lookup event source: %m"); |
00d9ef85 LP |
1173 | |
1174 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
1175 | } | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
23a177ef | 1180 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 1181 | Unit *u; |
23a177ef LP |
1182 | unsigned n = 0; |
1183 | ||
1184 | assert(m); | |
1185 | ||
595ed347 MS |
1186 | while ((u = m->cleanup_queue)) { |
1187 | assert(u->in_cleanup_queue); | |
23a177ef | 1188 | |
595ed347 | 1189 | unit_free(u); |
23a177ef LP |
1190 | n++; |
1191 | } | |
1192 | ||
1193 | return n; | |
1194 | } | |
1195 | ||
eced69b3 | 1196 | enum { |
35b8ca3a | 1197 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
1198 | GC_OFFSET_UNSURE, /* No clue */ |
1199 | GC_OFFSET_GOOD, /* We still need this unit */ | |
1200 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
1201 | _GC_OFFSET_MAX | |
1202 | }; | |
1203 | ||
00d9ef85 | 1204 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
1205 | Unit *other; |
1206 | ||
1207 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
1208 | ||
1209 | /* Recursively mark referenced units as GOOD as well */ | |
15ed3c3a | 1210 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_REFERENCES) |
4892084f LN |
1211 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
1212 | unit_gc_mark_good(other, gc_marker); | |
1213 | } | |
1214 | ||
eced69b3 | 1215 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 1216 | Unit *other; |
eced69b3 | 1217 | bool is_bad; |
701cc384 LP |
1218 | |
1219 | assert(u); | |
1220 | ||
4c701096 YW |
1221 | if (IN_SET(u->gc_marker - gc_marker, |
1222 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1223 | return; |
1224 | ||
ac155bb8 | 1225 | if (u->in_cleanup_queue) |
701cc384 LP |
1226 | goto bad; |
1227 | ||
f2f725e5 | 1228 | if (!unit_may_gc(u)) |
701cc384 LP |
1229 | goto good; |
1230 | ||
ac155bb8 | 1231 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1232 | |
1233 | is_bad = true; | |
1234 | ||
15ed3c3a | 1235 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_REFERENCED_BY) { |
701cc384 LP |
1236 | unit_gc_sweep(other, gc_marker); |
1237 | ||
ac155bb8 | 1238 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1239 | goto good; |
eced69b3 | 1240 | |
ac155bb8 | 1241 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1242 | is_bad = false; |
701cc384 LP |
1243 | } |
1244 | ||
ef3fc326 ZJS |
1245 | LIST_FOREACH(refs_by_target, ref, u->refs_by_target) { |
1246 | unit_gc_sweep(ref->source, gc_marker); | |
2641f02e | 1247 | |
ef3fc326 ZJS |
1248 | if (ref->source->gc_marker == gc_marker + GC_OFFSET_GOOD) |
1249 | goto good; | |
2641f02e | 1250 | |
ef3fc326 ZJS |
1251 | if (ref->source->gc_marker != gc_marker + GC_OFFSET_BAD) |
1252 | is_bad = false; | |
2641f02e | 1253 | } |
701cc384 | 1254 | |
eced69b3 LP |
1255 | if (is_bad) |
1256 | goto bad; | |
1257 | ||
1258 | /* We were unable to find anything out about this entry, so | |
1259 | * let's investigate it later */ | |
ac155bb8 | 1260 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1261 | unit_add_to_gc_queue(u); |
1262 | return; | |
1263 | ||
701cc384 | 1264 | bad: |
eced69b3 LP |
1265 | /* We definitely know that this one is not useful anymore, so |
1266 | * let's mark it for deletion */ | |
ac155bb8 | 1267 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1268 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1269 | return; |
1270 | ||
1271 | good: | |
4892084f | 1272 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1273 | } |
1274 | ||
c5a97ed1 LP |
1275 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1276 | unsigned n = 0, gc_marker; | |
595ed347 | 1277 | Unit *u; |
701cc384 LP |
1278 | |
1279 | assert(m); | |
1280 | ||
cf1265e1 | 1281 | /* log_debug("Running GC..."); */ |
701cc384 | 1282 | |
eced69b3 LP |
1283 | m->gc_marker += _GC_OFFSET_MAX; |
1284 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1285 | m->gc_marker = 1; |
701cc384 | 1286 | |
eced69b3 LP |
1287 | gc_marker = m->gc_marker; |
1288 | ||
c5a97ed1 | 1289 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1290 | assert(u->in_gc_queue); |
701cc384 | 1291 | |
595ed347 | 1292 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1293 | |
c5a97ed1 | 1294 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1295 | u->in_gc_queue = false; |
701cc384 LP |
1296 | |
1297 | n++; | |
1298 | ||
4c701096 YW |
1299 | if (IN_SET(u->gc_marker - gc_marker, |
1300 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1301 | if (u->id) |
f2341e0a | 1302 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1303 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1304 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1305 | } |
1306 | } | |
1307 | ||
701cc384 LP |
1308 | return n; |
1309 | } | |
1310 | ||
c5a97ed1 LP |
1311 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1312 | unsigned n = 0; | |
1313 | Job *j; | |
1314 | ||
1315 | assert(m); | |
1316 | ||
1317 | while ((j = m->gc_job_queue)) { | |
1318 | assert(j->in_gc_queue); | |
1319 | ||
1320 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1321 | j->in_gc_queue = false; | |
1322 | ||
1323 | n++; | |
1324 | ||
2ab3050f | 1325 | if (!job_may_gc(j)) |
c5a97ed1 LP |
1326 | continue; |
1327 | ||
1328 | log_unit_debug(j->unit, "Collecting job."); | |
1329 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1330 | } | |
1331 | ||
1332 | return n; | |
1333 | } | |
1334 | ||
a3c1168a LP |
1335 | static unsigned manager_dispatch_stop_when_unneeded_queue(Manager *m) { |
1336 | unsigned n = 0; | |
1337 | Unit *u; | |
1338 | int r; | |
1339 | ||
1340 | assert(m); | |
1341 | ||
1342 | while ((u = m->stop_when_unneeded_queue)) { | |
1343 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
a3c1168a LP |
1344 | |
1345 | assert(u->in_stop_when_unneeded_queue); | |
1346 | LIST_REMOVE(stop_when_unneeded_queue, m->stop_when_unneeded_queue, u); | |
1347 | u->in_stop_when_unneeded_queue = false; | |
1348 | ||
1349 | n++; | |
1350 | ||
1351 | if (!unit_is_unneeded(u)) | |
1352 | continue; | |
1353 | ||
1354 | log_unit_debug(u, "Unit is not needed anymore."); | |
1355 | ||
1356 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1357 | * service being unnecessary after a while. */ | |
1358 | ||
0bc488c9 | 1359 | if (!ratelimit_below(&u->auto_start_stop_ratelimit)) { |
a3c1168a LP |
1360 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); |
1361 | continue; | |
1362 | } | |
1363 | ||
1364 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
50cbaba4 | 1365 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, NULL, &error, NULL); |
a3c1168a LP |
1366 | if (r < 0) |
1367 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1368 | } | |
1369 | ||
1370 | return n; | |
1371 | } | |
1372 | ||
0bc488c9 LP |
1373 | static unsigned manager_dispatch_start_when_upheld_queue(Manager *m) { |
1374 | unsigned n = 0; | |
1375 | Unit *u; | |
1376 | int r; | |
1377 | ||
1378 | assert(m); | |
1379 | ||
1380 | while ((u = m->start_when_upheld_queue)) { | |
1381 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1382 | Unit *culprit = NULL; | |
1383 | ||
1384 | assert(u->in_start_when_upheld_queue); | |
1385 | LIST_REMOVE(start_when_upheld_queue, m->start_when_upheld_queue, u); | |
1386 | u->in_start_when_upheld_queue = false; | |
1387 | ||
1388 | n++; | |
1389 | ||
1390 | if (!unit_is_upheld_by_active(u, &culprit)) | |
1391 | continue; | |
1392 | ||
1393 | log_unit_debug(u, "Unit is started because upheld by active unit %s.", culprit->id); | |
1394 | ||
1395 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1396 | * service being unnecessary after a while. */ | |
1397 | ||
1398 | if (!ratelimit_below(&u->auto_start_stop_ratelimit)) { | |
1399 | 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); | |
1400 | continue; | |
1401 | } | |
1402 | ||
1403 | r = manager_add_job(u->manager, JOB_START, u, JOB_FAIL, NULL, &error, NULL); | |
1404 | if (r < 0) | |
1405 | log_unit_warning_errno(u, r, "Failed to enqueue start job, ignoring: %s", bus_error_message(&error, r)); | |
1406 | } | |
1407 | ||
1408 | return n; | |
1409 | } | |
1410 | ||
56c59592 LP |
1411 | static unsigned manager_dispatch_stop_when_bound_queue(Manager *m) { |
1412 | unsigned n = 0; | |
1413 | Unit *u; | |
1414 | int r; | |
1415 | ||
1416 | assert(m); | |
1417 | ||
1418 | while ((u = m->stop_when_bound_queue)) { | |
1419 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1420 | Unit *culprit = NULL; | |
1421 | ||
1422 | assert(u->in_stop_when_bound_queue); | |
1423 | LIST_REMOVE(stop_when_bound_queue, m->stop_when_bound_queue, u); | |
1424 | u->in_stop_when_bound_queue = false; | |
1425 | ||
1426 | n++; | |
1427 | ||
1428 | if (!unit_is_bound_by_inactive(u, &culprit)) | |
1429 | continue; | |
1430 | ||
1431 | log_unit_debug(u, "Unit is stopped because bound to inactive unit %s.", culprit->id); | |
1432 | ||
1433 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1434 | * service being unnecessary after a while. */ | |
1435 | ||
1436 | if (!ratelimit_below(&u->auto_start_stop_ratelimit)) { | |
1437 | 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); | |
1438 | continue; | |
1439 | } | |
1440 | ||
1441 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_REPLACE, NULL, &error, NULL); | |
1442 | if (r < 0) | |
1443 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1444 | } | |
1445 | ||
1446 | return n; | |
1447 | } | |
1448 | ||
a16e1123 | 1449 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1450 | Unit *u; |
60918275 LP |
1451 | |
1452 | assert(m); | |
1453 | ||
87f0e418 LP |
1454 | while ((u = hashmap_first(m->units))) |
1455 | unit_free(u); | |
964e0949 LP |
1456 | |
1457 | manager_dispatch_cleanup_queue(m); | |
1458 | ||
1459 | assert(!m->load_queue); | |
da8e1782 | 1460 | assert(prioq_isempty(m->run_queue)); |
964e0949 LP |
1461 | assert(!m->dbus_unit_queue); |
1462 | assert(!m->dbus_job_queue); | |
1463 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1464 | assert(!m->gc_unit_queue); |
1465 | assert(!m->gc_job_queue); | |
13e72103 MK |
1466 | assert(!m->cgroup_realize_queue); |
1467 | assert(!m->cgroup_empty_queue); | |
1468 | assert(!m->cgroup_oom_queue); | |
1469 | assert(!m->target_deps_queue); | |
a3c1168a | 1470 | assert(!m->stop_when_unneeded_queue); |
0bc488c9 | 1471 | assert(!m->start_when_upheld_queue); |
56c59592 | 1472 | assert(!m->stop_when_bound_queue); |
964e0949 | 1473 | |
964e0949 LP |
1474 | assert(hashmap_isempty(m->jobs)); |
1475 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1476 | |
1477 | m->n_on_console = 0; | |
1478 | m->n_running_jobs = 0; | |
1e75824c MK |
1479 | m->n_installed_jobs = 0; |
1480 | m->n_failed_jobs = 0; | |
a16e1123 LP |
1481 | } |
1482 | ||
06d8d842 | 1483 | Manager* manager_free(Manager *m) { |
06d8d842 ZJS |
1484 | if (!m) |
1485 | return NULL; | |
a16e1123 LP |
1486 | |
1487 | manager_clear_jobs_and_units(m); | |
23a177ef | 1488 | |
24b45970 | 1489 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) |
7824bbeb LP |
1490 | if (unit_vtable[c]->shutdown) |
1491 | unit_vtable[c]->shutdown(m); | |
1492 | ||
86036b26 LP |
1493 | /* Keep the cgroup hierarchy in place except when we know we are going down for good */ |
1494 | manager_shutdown_cgroup(m, IN_SET(m->objective, MANAGER_EXIT, MANAGER_REBOOT, MANAGER_POWEROFF, MANAGER_HALT, MANAGER_KEXEC)); | |
8e274523 | 1495 | |
07a78643 | 1496 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1497 | |
5e8d1c9a | 1498 | bus_done(m); |
19d22d43 | 1499 | manager_varlink_done(m); |
ea430986 | 1500 | |
e8a565cb YW |
1501 | exec_runtime_vacuum(m); |
1502 | hashmap_free(m->exec_runtime_by_id); | |
1503 | ||
29206d46 LP |
1504 | dynamic_user_vacuum(m, false); |
1505 | hashmap_free(m->dynamic_users); | |
1506 | ||
87f0e418 | 1507 | hashmap_free(m->units); |
4b58153d | 1508 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1509 | hashmap_free(m->jobs); |
62a76913 | 1510 | hashmap_free(m->watch_pids); |
05e343b7 | 1511 | hashmap_free(m->watch_bus); |
9152c765 | 1512 | |
da8e1782 MO |
1513 | prioq_free(m->run_queue); |
1514 | ||
95ae05c0 | 1515 | set_free(m->startup_units); |
f755e3b7 LP |
1516 | set_free(m->failed_units); |
1517 | ||
718db961 | 1518 | sd_event_source_unref(m->signal_event_source); |
575b300b | 1519 | sd_event_source_unref(m->sigchld_event_source); |
718db961 | 1520 | sd_event_source_unref(m->notify_event_source); |
d8fdc620 | 1521 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 | 1522 | sd_event_source_unref(m->time_change_event_source); |
bbf5fd8e | 1523 | sd_event_source_unref(m->timezone_change_event_source); |
718db961 | 1524 | sd_event_source_unref(m->jobs_in_progress_event_source); |
752b5905 | 1525 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1526 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1527 | |
03e334a1 LP |
1528 | safe_close(m->signal_fd); |
1529 | safe_close(m->notify_fd); | |
d8fdc620 | 1530 | safe_close(m->cgroups_agent_fd); |
00d9ef85 | 1531 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1532 | |
e46b13c8 ZJS |
1533 | manager_close_ask_password(m); |
1534 | ||
718db961 LP |
1535 | manager_close_idle_pipe(m); |
1536 | ||
1537 | sd_event_unref(m->event); | |
60918275 | 1538 | |
c952c6ec LP |
1539 | free(m->notify_socket); |
1540 | ||
84e3543e | 1541 | lookup_paths_free(&m->lookup_paths); |
1ad6e8b3 LP |
1542 | strv_free(m->transient_environment); |
1543 | strv_free(m->client_environment); | |
036643a2 | 1544 | |
4ad49000 | 1545 | hashmap_free(m->cgroup_unit); |
e8630e69 | 1546 | manager_free_unit_name_maps(m); |
33be102a | 1547 | |
664f88a7 LP |
1548 | free(m->switch_root); |
1549 | free(m->switch_root_init); | |
1550 | ||
31ce987c | 1551 | rlimit_free_all(m->rlimit); |
c93ff2e9 | 1552 | |
a57f7e2c LP |
1553 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1554 | hashmap_free(m->units_requiring_mounts_for); | |
1555 | ||
00d9ef85 LP |
1556 | hashmap_free(m->uid_refs); |
1557 | hashmap_free(m->gid_refs); | |
1558 | ||
24b45970 | 1559 | for (ExecDirectoryType dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a | 1560 | m->prefix[dt] = mfree(m->prefix[dt]); |
2ad591a3 LP |
1561 | free(m->received_credentials_directory); |
1562 | free(m->received_encrypted_credentials_directory); | |
35aba85a | 1563 | |
aff3a9e1 LB |
1564 | free(m->watchdog_pretimeout_governor); |
1565 | free(m->watchdog_pretimeout_governor_overridden); | |
1566 | ||
b1994387 ILG |
1567 | #if BPF_FRAMEWORK |
1568 | lsm_bpf_destroy(m->restrict_fs); | |
1569 | #endif | |
1570 | ||
6b430fdb | 1571 | return mfree(m); |
60918275 LP |
1572 | } |
1573 | ||
04eb582a | 1574 | static void manager_enumerate_perpetual(Manager *m) { |
04eb582a LP |
1575 | assert(m); |
1576 | ||
1545051c | 1577 | if (FLAGS_SET(m->test_run_flags, MANAGER_TEST_RUN_MINIMAL)) |
b1d5246d ZJS |
1578 | return; |
1579 | ||
04eb582a | 1580 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1581 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
04eb582a LP |
1582 | if (!unit_type_supported(c)) { |
1583 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); | |
1584 | continue; | |
1585 | } | |
1586 | ||
1587 | if (unit_vtable[c]->enumerate_perpetual) | |
1588 | unit_vtable[c]->enumerate_perpetual(m); | |
1589 | } | |
1590 | } | |
1591 | ||
a1113e08 | 1592 | static void manager_enumerate(Manager *m) { |
f50e0a01 LP |
1593 | assert(m); |
1594 | ||
1545051c | 1595 | if (FLAGS_SET(m->test_run_flags, MANAGER_TEST_RUN_MINIMAL)) |
b1d5246d ZJS |
1596 | return; |
1597 | ||
04eb582a | 1598 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1599 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1600 | if (!unit_type_supported(c)) { |
03afec3c | 1601 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1602 | continue; |
a57f7e2c | 1603 | } |
f50e0a01 | 1604 | |
94b01dae ZJS |
1605 | if (unit_vtable[c]->enumerate) |
1606 | unit_vtable[c]->enumerate(m); | |
0faacd47 LP |
1607 | } |
1608 | ||
f50e0a01 | 1609 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1610 | } |
1611 | ||
007c6337 | 1612 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1613 | Unit *u; |
1614 | char *k; | |
007c6337 | 1615 | int r; |
a16e1123 LP |
1616 | |
1617 | assert(m); | |
f50e0a01 | 1618 | |
f0831ed2 LP |
1619 | log_debug("Invoking unit coldplug() handlers…"); |
1620 | ||
1621 | /* Let's place the units back into their deserialized state */ | |
90e74a66 | 1622 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f50e0a01 LP |
1623 | |
1624 | /* ignore aliases */ | |
ac155bb8 | 1625 | if (u->id != k) |
f50e0a01 LP |
1626 | continue; |
1627 | ||
007c6337 LP |
1628 | r = unit_coldplug(u); |
1629 | if (r < 0) | |
1630 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1631 | } |
a16e1123 LP |
1632 | } |
1633 | ||
f0831ed2 | 1634 | static void manager_catchup(Manager *m) { |
f0831ed2 LP |
1635 | Unit *u; |
1636 | char *k; | |
1637 | ||
1638 | assert(m); | |
1639 | ||
1640 | log_debug("Invoking unit catchup() handlers…"); | |
1641 | ||
1642 | /* Let's catch up on any state changes that happened while we were reloading/reexecing */ | |
90e74a66 | 1643 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f0831ed2 LP |
1644 | |
1645 | /* ignore aliases */ | |
1646 | if (u->id != k) | |
1647 | continue; | |
1648 | ||
1649 | unit_catchup(u); | |
1650 | } | |
1651 | } | |
1652 | ||
9ff1a6f1 | 1653 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9ff1a6f1 | 1654 | Unit *u; |
9588bc32 LP |
1655 | |
1656 | assert(m); | |
1657 | ||
90e74a66 | 1658 | HASHMAP_FOREACH(u, m->units) { |
9588bc32 LP |
1659 | |
1660 | if (fdset_size(fds) <= 0) | |
1661 | break; | |
1662 | ||
9ff1a6f1 LP |
1663 | if (!UNIT_VTABLE(u)->distribute_fds) |
1664 | continue; | |
9588bc32 | 1665 | |
9ff1a6f1 LP |
1666 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1667 | } | |
9588bc32 LP |
1668 | } |
1669 | ||
8559b3b7 LP |
1670 | static bool manager_dbus_is_running(Manager *m, bool deserialized) { |
1671 | Unit *u; | |
1672 | ||
1673 | assert(m); | |
1674 | ||
1675 | /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket | |
1676 | * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit | |
1677 | * rather than the current one. */ | |
1678 | ||
638cece4 | 1679 | if (MANAGER_IS_TEST_RUN(m)) |
8559b3b7 LP |
1680 | return false; |
1681 | ||
8559b3b7 LP |
1682 | u = manager_get_unit(m, SPECIAL_DBUS_SOCKET); |
1683 | if (!u) | |
1684 | return false; | |
1685 | if ((deserialized ? SOCKET(u)->deserialized_state : SOCKET(u)->state) != SOCKET_RUNNING) | |
1686 | return false; | |
1687 | ||
1688 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1689 | if (!u) | |
1690 | return false; | |
1691 | if (!IN_SET((deserialized ? SERVICE(u)->deserialized_state : SERVICE(u)->state), SERVICE_RUNNING, SERVICE_RELOAD)) | |
1692 | return false; | |
1693 | ||
1694 | return true; | |
1695 | } | |
1696 | ||
9d4c195c LP |
1697 | static void manager_setup_bus(Manager *m) { |
1698 | assert(m); | |
1699 | ||
1700 | /* Let's set up our private bus connection now, unconditionally */ | |
1701 | (void) bus_init_private(m); | |
1702 | ||
1703 | /* If we are in --user mode also connect to the system bus now */ | |
1704 | if (MANAGER_IS_USER(m)) | |
1705 | (void) bus_init_system(m); | |
1706 | ||
1707 | /* Let's connect to the bus now, but only if the unit is supposed to be up */ | |
1708 | if (manager_dbus_is_running(m, MANAGER_IS_RELOADING(m))) { | |
1709 | (void) bus_init_api(m); | |
1710 | ||
1711 | if (MANAGER_IS_SYSTEM(m)) | |
1712 | (void) bus_init_system(m); | |
1713 | } | |
1714 | } | |
1715 | ||
159f1e76 LP |
1716 | static void manager_preset_all(Manager *m) { |
1717 | int r; | |
1718 | ||
1719 | assert(m); | |
1720 | ||
1721 | if (m->first_boot <= 0) | |
1722 | return; | |
1723 | ||
1724 | if (!MANAGER_IS_SYSTEM(m)) | |
1725 | return; | |
1726 | ||
638cece4 | 1727 | if (MANAGER_IS_TEST_RUN(m)) |
159f1e76 LP |
1728 | return; |
1729 | ||
1730 | /* If this is the first boot, and we are in the host system, then preset everything */ | |
b380b643 | 1731 | r = unit_file_preset_all(LOOKUP_SCOPE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); |
159f1e76 LP |
1732 | if (r < 0) |
1733 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1734 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
1735 | else | |
1736 | log_info("Populated /etc with preset unit settings."); | |
1737 | } | |
1738 | ||
5ce5e1ad LP |
1739 | static void manager_ready(Manager *m) { |
1740 | assert(m); | |
1741 | ||
1742 | /* After having loaded everything, do the final round of catching up with what might have changed */ | |
1743 | ||
1744 | m->objective = MANAGER_OK; /* Tell everyone we are up now */ | |
1745 | ||
1746 | /* It might be safe to log to the journal now and connect to dbus */ | |
1747 | manager_recheck_journal(m); | |
1748 | manager_recheck_dbus(m); | |
1749 | ||
5ce5e1ad LP |
1750 | /* Let's finally catch up with any changes that took place while we were reloading/reexecing */ |
1751 | manager_catchup(m); | |
c6e892bc | 1752 | |
15b9243c | 1753 | /* Create a file which will indicate when the manager started loading units the last time. */ |
4b3ad81b LB |
1754 | if (MANAGER_IS_SYSTEM(m)) |
1755 | (void) touch_file("/run/systemd/systemd-units-load", false, | |
1756 | m->timestamps[MANAGER_TIMESTAMP_UNITS_LOAD].realtime ?: now(CLOCK_REALTIME), | |
1757 | UID_INVALID, GID_INVALID, 0444); | |
15b9243c | 1758 | |
c6e892bc | 1759 | m->honor_device_enumeration = true; |
5ce5e1ad LP |
1760 | } |
1761 | ||
a01ba4b2 | 1762 | Manager* manager_reloading_start(Manager *m) { |
d147e2b6 | 1763 | m->n_reloading++; |
49fbe940 | 1764 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD); |
d147e2b6 ZJS |
1765 | return m; |
1766 | } | |
49fbe940 | 1767 | |
a01ba4b2 | 1768 | void manager_reloading_stopp(Manager **m) { |
d147e2b6 ZJS |
1769 | if (*m) { |
1770 | assert((*m)->n_reloading > 0); | |
1771 | (*m)->n_reloading--; | |
1772 | } | |
1773 | } | |
1774 | ||
2a7cf953 | 1775 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds, const char *root) { |
17f01ace | 1776 | int r; |
a16e1123 LP |
1777 | |
1778 | assert(m); | |
1779 | ||
a1f31f47 ZJS |
1780 | /* If we are running in test mode, we still want to run the generators, |
1781 | * but we should not touch the real generator directories. */ | |
99aad9a2 ZJS |
1782 | r = lookup_paths_init_or_warn(&m->lookup_paths, m->unit_file_scope, |
1783 | MANAGER_IS_TEST_RUN(m) ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, | |
1784 | root); | |
e801700e | 1785 | if (r < 0) |
99aad9a2 | 1786 | return r; |
5a1e9937 | 1787 | |
d4ee7bd8 | 1788 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START)); |
eb523bfb LP |
1789 | r = manager_run_environment_generators(m); |
1790 | if (r >= 0) | |
1791 | r = manager_run_generators(m); | |
d4ee7bd8 | 1792 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH)); |
07719a21 LP |
1793 | if (r < 0) |
1794 | return r; | |
1795 | ||
159f1e76 | 1796 | manager_preset_all(m); |
572986ca | 1797 | |
581fef8d | 1798 | lookup_paths_log(&m->lookup_paths); |
572986ca | 1799 | |
4df7d537 ZJS |
1800 | { |
1801 | /* This block is (optionally) done with the reloading counter bumped */ | |
d7ac0952 | 1802 | _unused_ _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
4df7d537 ZJS |
1803 | |
1804 | /* If we will deserialize make sure that during enumeration this is already known, so we increase the | |
1805 | * counter here already */ | |
1806 | if (serialization) | |
1807 | reloading = manager_reloading_start(m); | |
1808 | ||
1809 | /* First, enumerate what we can from all config files */ | |
1810 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START)); | |
1811 | manager_enumerate_perpetual(m); | |
1812 | manager_enumerate(m); | |
1813 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH)); | |
1814 | ||
1815 | /* Second, deserialize if there is something to deserialize */ | |
1816 | if (serialization) { | |
1817 | r = manager_deserialize(m, serialization, fds); | |
1818 | if (r < 0) | |
1819 | return log_error_errno(r, "Deserialization failed: %m"); | |
1820 | } | |
01e10de3 | 1821 | |
4df7d537 ZJS |
1822 | /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass |
1823 | * some file descriptors to us pre-initialized. This enables socket-based activation of entire | |
1824 | * containers. */ | |
1825 | manager_distribute_fds(m, fds); | |
d86f9d52 | 1826 | |
4df7d537 ZJS |
1827 | /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */ |
1828 | r = manager_setup_notify(m); | |
1829 | if (r < 0) | |
1830 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1831 | return r; | |
d8fdc620 | 1832 | |
4df7d537 ZJS |
1833 | r = manager_setup_cgroups_agent(m); |
1834 | if (r < 0) | |
1835 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1836 | return r; | |
00d9ef85 | 1837 | |
4df7d537 ZJS |
1838 | r = manager_setup_user_lookup_fd(m); |
1839 | if (r < 0) | |
1840 | /* This shouldn't fail, except if things are really broken. */ | |
1841 | return r; | |
8559b3b7 | 1842 | |
4df7d537 ZJS |
1843 | /* Connect to the bus if we are good for it */ |
1844 | manager_setup_bus(m); | |
e3dd987c | 1845 | |
5238e957 | 1846 | /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */ |
4df7d537 ZJS |
1847 | r = bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); |
1848 | if (r < 0) | |
1849 | log_warning_errno(r, "Failed to deserialized tracked clients, ignoring: %m"); | |
1850 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
a16e1123 | 1851 | |
19d22d43 LP |
1852 | r = manager_varlink_init(m); |
1853 | if (r < 0) | |
064a5c14 | 1854 | log_warning_errno(r, "Failed to set up Varlink, ignoring: %m"); |
19d22d43 | 1855 | |
4df7d537 ZJS |
1856 | /* Third, fire things up! */ |
1857 | manager_coldplug(m); | |
3ad2afb6 | 1858 | |
4df7d537 ZJS |
1859 | /* Clean up runtime objects */ |
1860 | manager_vacuum(m); | |
71445ae7 | 1861 | |
4df7d537 ZJS |
1862 | if (serialization) |
1863 | /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the | |
1864 | * reload is finished */ | |
1865 | m->send_reloading_done = true; | |
9f611ad8 LP |
1866 | } |
1867 | ||
5ce5e1ad | 1868 | manager_ready(m); |
f0831ed2 | 1869 | |
17f01ace | 1870 | return 0; |
f50e0a01 LP |
1871 | } |
1872 | ||
50cbaba4 LP |
1873 | int manager_add_job( |
1874 | Manager *m, | |
1875 | JobType type, | |
1876 | Unit *unit, | |
1877 | JobMode mode, | |
1878 | Set *affected_jobs, | |
1879 | sd_bus_error *error, | |
1880 | Job **ret) { | |
1881 | ||
7527cb52 | 1882 | Transaction *tr; |
50cbaba4 | 1883 | int r; |
e5b5ae50 LP |
1884 | |
1885 | assert(m); | |
1886 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1887 | assert(unit); |
e5b5ae50 | 1888 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1889 | |
7358dc02 | 1890 | if (mode == JOB_ISOLATE && type != JOB_START) |
1b09b81c | 1891 | return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); |
c497c7a9 | 1892 | |
7358dc02 | 1893 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1b09b81c | 1894 | return sd_bus_error_set(error, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
2528a7a6 | 1895 | |
1f0f9f21 | 1896 | if (mode == JOB_TRIGGERING && type != JOB_STOP) |
1b09b81c | 1897 | return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "--job-mode=triggering is only valid for stop."); |
1f0f9f21 | 1898 | |
f2341e0a | 1899 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1900 | |
c6497ccb | 1901 | type = job_type_collapse(type, unit); |
e0209d83 | 1902 | |
23ade460 | 1903 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1904 | if (!tr) |
1905 | return -ENOMEM; | |
11dd41ce | 1906 | |
4bd29fe5 | 1907 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
3742095b | 1908 | IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS), |
50cbaba4 | 1909 | mode == JOB_IGNORE_DEPENDENCIES, error); |
7527cb52 MS |
1910 | if (r < 0) |
1911 | goto tr_abort; | |
c497c7a9 | 1912 | |
7527cb52 MS |
1913 | if (mode == JOB_ISOLATE) { |
1914 | r = transaction_add_isolate_jobs(tr, m); | |
1915 | if (r < 0) | |
1916 | goto tr_abort; | |
1917 | } | |
1918 | ||
1f0f9f21 KK |
1919 | if (mode == JOB_TRIGGERING) { |
1920 | r = transaction_add_triggering_jobs(tr, unit); | |
1921 | if (r < 0) | |
1922 | goto tr_abort; | |
1923 | } | |
1924 | ||
50cbaba4 | 1925 | r = transaction_activate(tr, m, mode, affected_jobs, error); |
7527cb52 MS |
1926 | if (r < 0) |
1927 | goto tr_abort; | |
e5b5ae50 | 1928 | |
f2341e0a | 1929 | log_unit_debug(unit, |
66870f90 ZJS |
1930 | "Enqueued job %s/%s as %u", unit->id, |
1931 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1932 | |
50cbaba4 LP |
1933 | if (ret) |
1934 | *ret = tr->anchor_job; | |
60918275 | 1935 | |
7527cb52 | 1936 | transaction_free(tr); |
e5b5ae50 | 1937 | return 0; |
7527cb52 MS |
1938 | |
1939 | tr_abort: | |
1940 | transaction_abort(tr); | |
1941 | transaction_free(tr); | |
1942 | return r; | |
e5b5ae50 | 1943 | } |
60918275 | 1944 | |
50cbaba4 | 1945 | 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 | 1946 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1947 | int r; |
1948 | ||
1949 | assert(m); | |
1950 | assert(type < _JOB_TYPE_MAX); | |
1951 | assert(name); | |
1952 | assert(mode < _JOB_MODE_MAX); | |
1953 | ||
c3090674 LP |
1954 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1955 | if (r < 0) | |
28247076 | 1956 | return r; |
4440b27d | 1957 | assert(unit); |
28247076 | 1958 | |
50cbaba4 | 1959 | return manager_add_job(m, type, unit, mode, affected_jobs, e, ret); |
53f18416 LP |
1960 | } |
1961 | ||
50cbaba4 | 1962 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Set *affected_jobs, Job **ret) { |
4afd3348 | 1963 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1964 | int r; |
1965 | ||
1966 | assert(m); | |
1967 | assert(type < _JOB_TYPE_MAX); | |
1968 | assert(name); | |
1969 | assert(mode < _JOB_MODE_MAX); | |
1970 | ||
50cbaba4 | 1971 | r = manager_add_job_by_name(m, type, name, mode, affected_jobs, &error, ret); |
53f18416 LP |
1972 | if (r < 0) |
1973 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1974 | ||
1975 | return r; | |
28247076 LP |
1976 | } |
1977 | ||
15d167f8 JW |
1978 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1979 | int r; | |
1980 | Transaction *tr; | |
1981 | ||
1982 | assert(m); | |
1983 | assert(unit); | |
1984 | assert(mode < _JOB_MODE_MAX); | |
1985 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1986 | ||
1987 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1988 | if (!tr) | |
1989 | return -ENOMEM; | |
1990 | ||
1991 | /* We need an anchor job */ | |
1992 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1993 | if (r < 0) | |
1994 | goto tr_abort; | |
1995 | ||
1996 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1997 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1998 | ||
50cbaba4 | 1999 | r = transaction_activate(tr, m, mode, NULL, e); |
15d167f8 JW |
2000 | if (r < 0) |
2001 | goto tr_abort; | |
2002 | ||
2003 | transaction_free(tr); | |
2004 | return 0; | |
2005 | ||
2006 | tr_abort: | |
2007 | transaction_abort(tr); | |
2008 | transaction_free(tr); | |
2009 | return r; | |
2010 | } | |
2011 | ||
60918275 LP |
2012 | Job *manager_get_job(Manager *m, uint32_t id) { |
2013 | assert(m); | |
2014 | ||
2015 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
2016 | } | |
2017 | ||
87f0e418 | 2018 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
2019 | assert(m); |
2020 | assert(name); | |
2021 | ||
87f0e418 | 2022 | return hashmap_get(m->units, name); |
60918275 LP |
2023 | } |
2024 | ||
19496554 MS |
2025 | static int manager_dispatch_target_deps_queue(Manager *m) { |
2026 | Unit *u; | |
19496554 MS |
2027 | int r = 0; |
2028 | ||
19496554 MS |
2029 | assert(m); |
2030 | ||
2031 | while ((u = m->target_deps_queue)) { | |
15ed3c3a LP |
2032 | _cleanup_free_ Unit **targets = NULL; |
2033 | int n_targets; | |
2034 | ||
19496554 MS |
2035 | assert(u->in_target_deps_queue); |
2036 | ||
2037 | LIST_REMOVE(target_deps_queue, u->manager->target_deps_queue, u); | |
2038 | u->in_target_deps_queue = false; | |
2039 | ||
15ed3c3a LP |
2040 | /* Take an "atomic" snapshot of dependencies here, as the call below will likely modify the |
2041 | * dependencies, and we can't have it that hash tables we iterate through are modified while | |
2042 | * we are iterating through them. */ | |
2043 | n_targets = unit_get_dependency_array(u, UNIT_ATOM_DEFAULT_TARGET_DEPENDENCIES, &targets); | |
2044 | if (n_targets < 0) | |
2045 | return n_targets; | |
19496554 | 2046 | |
15ed3c3a LP |
2047 | for (int i = 0; i < n_targets; i++) { |
2048 | r = unit_add_default_target_dependency(u, targets[i]); | |
2049 | if (r < 0) | |
2050 | return r; | |
19496554 MS |
2051 | } |
2052 | } | |
2053 | ||
2054 | return r; | |
2055 | } | |
2056 | ||
c1e1601e | 2057 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 2058 | Unit *u; |
c1e1601e | 2059 | unsigned n = 0; |
60918275 LP |
2060 | |
2061 | assert(m); | |
2062 | ||
223dabab LP |
2063 | /* Make sure we are not run recursively */ |
2064 | if (m->dispatching_load_queue) | |
c1e1601e | 2065 | return 0; |
223dabab LP |
2066 | |
2067 | m->dispatching_load_queue = true; | |
2068 | ||
87f0e418 | 2069 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
2070 | * tries to load its data until the queue is empty */ |
2071 | ||
595ed347 MS |
2072 | while ((u = m->load_queue)) { |
2073 | assert(u->in_load_queue); | |
034c6ed7 | 2074 | |
595ed347 | 2075 | unit_load(u); |
c1e1601e | 2076 | n++; |
60918275 LP |
2077 | } |
2078 | ||
223dabab | 2079 | m->dispatching_load_queue = false; |
19496554 MS |
2080 | |
2081 | /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about | |
2082 | * should be loaded and have aliases resolved */ | |
2083 | (void) manager_dispatch_target_deps_queue(m); | |
2084 | ||
c1e1601e | 2085 | return n; |
60918275 LP |
2086 | } |
2087 | ||
81be2388 | 2088 | bool manager_unit_cache_should_retry_load(Unit *u) { |
cda66772 LB |
2089 | assert(u); |
2090 | ||
81be2388 ZJS |
2091 | /* Automatic reloading from disk only applies to units which were not found sometime in the past, and |
2092 | * the not-found stub is kept pinned in the unit graph by dependencies. For units that were | |
2093 | * previously loaded, we don't do automatic reloading, and daemon-reload is necessary to update. */ | |
cda66772 LB |
2094 | if (u->load_state != UNIT_NOT_FOUND) |
2095 | return false; | |
2096 | ||
81be2388 ZJS |
2097 | /* The cache has been updated since the last time we tried to load the unit. There might be new |
2098 | * fragment paths to read. */ | |
c2911d48 | 2099 | if (u->manager->unit_cache_timestamp_hash != u->fragment_not_found_timestamp_hash) |
cda66772 | 2100 | return true; |
d904afc7 | 2101 | |
81be2388 | 2102 | /* The cache needs to be updated because there are modifications on disk. */ |
c2911d48 | 2103 | return !lookup_paths_timestamp_hash_same(&u->manager->lookup_paths, u->manager->unit_cache_timestamp_hash, NULL); |
d904afc7 LB |
2104 | } |
2105 | ||
c2756a68 LP |
2106 | int manager_load_unit_prepare( |
2107 | Manager *m, | |
2108 | const char *name, | |
2109 | const char *path, | |
718db961 | 2110 | sd_bus_error *e, |
c2756a68 LP |
2111 | Unit **_ret) { |
2112 | ||
dc409696 | 2113 | _cleanup_(unit_freep) Unit *cleanup_ret = NULL; |
87f0e418 | 2114 | Unit *ret; |
7d17cfbc | 2115 | UnitType t; |
60918275 LP |
2116 | int r; |
2117 | ||
2118 | assert(m); | |
7a6a095a | 2119 | assert(_ret); |
60918275 | 2120 | |
526e3cbb | 2121 | /* This will prepare the unit for loading, but not actually load anything from disk. */ |
0301abf4 | 2122 | |
526e3cbb | 2123 | if (path && !path_is_absolute(path)) |
718db961 | 2124 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); |
9e2f7c11 | 2125 | |
08f46856 BR |
2126 | if (!name) { |
2127 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
2128 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
2129 | * but this cannot be possible in any code path (See #6119). */ | |
2130 | assert_se(path); | |
2b6bf07d | 2131 | name = basename(path); |
08f46856 | 2132 | } |
9e2f7c11 | 2133 | |
7d17cfbc MS |
2134 | t = unit_name_to_type(name); |
2135 | ||
5d512d54 LN |
2136 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
2137 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
2138 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
2139 | ||
718db961 | 2140 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 2141 | } |
60918275 | 2142 | |
7d17cfbc MS |
2143 | ret = manager_get_unit(m, name); |
2144 | if (ret) { | |
d904afc7 LB |
2145 | /* The time-based cache allows to start new units without daemon-reload, |
2146 | * but if they are already referenced (because of dependencies or ordering) | |
2147 | * then we have to force a load of the fragment. As an optimization, check | |
2148 | * first if anything in the usual paths was modified since the last time | |
7233e91a LB |
2149 | * the cache was loaded. Also check if the last time an attempt to load the |
2150 | * unit was made was before the most recent cache refresh, so that we know | |
81be2388 | 2151 | * we need to try again — even if the cache is current, it might have been |
7233e91a LB |
2152 | * updated in a different context before we had a chance to retry loading |
2153 | * this particular unit. */ | |
81be2388 | 2154 | if (manager_unit_cache_should_retry_load(ret)) |
d904afc7 LB |
2155 | ret->load_state = UNIT_STUB; |
2156 | else { | |
2157 | *_ret = ret; | |
2158 | return 1; | |
2159 | } | |
2160 | } else { | |
2161 | ret = cleanup_ret = unit_new(m, unit_vtable[t]->object_size); | |
2162 | if (!ret) | |
2163 | return -ENOMEM; | |
034c6ed7 | 2164 | } |
60918275 | 2165 | |
7d17cfbc | 2166 | if (path) { |
d904afc7 LB |
2167 | r = free_and_strdup(&ret->fragment_path, path); |
2168 | if (r < 0) | |
2169 | return r; | |
7d17cfbc | 2170 | } |
0301abf4 | 2171 | |
1058cbf2 | 2172 | r = unit_add_name(ret, name); |
dc409696 | 2173 | if (r < 0) |
1ffba6fe | 2174 | return r; |
60918275 | 2175 | |
87f0e418 | 2176 | unit_add_to_load_queue(ret); |
c1e1601e | 2177 | unit_add_to_dbus_queue(ret); |
949061f0 | 2178 | unit_add_to_gc_queue(ret); |
c1e1601e | 2179 | |
7a6a095a | 2180 | *_ret = ret; |
dc409696 | 2181 | cleanup_ret = NULL; |
db06e3b6 LP |
2182 | |
2183 | return 0; | |
2184 | } | |
2185 | ||
c2756a68 LP |
2186 | int manager_load_unit( |
2187 | Manager *m, | |
2188 | const char *name, | |
2189 | const char *path, | |
718db961 | 2190 | sd_bus_error *e, |
c2756a68 LP |
2191 | Unit **_ret) { |
2192 | ||
db06e3b6 LP |
2193 | int r; |
2194 | ||
2195 | assert(m); | |
7a6a095a | 2196 | assert(_ret); |
db06e3b6 LP |
2197 | |
2198 | /* This will load the service information files, but not actually | |
2199 | * start any services or anything. */ | |
2200 | ||
c3090674 LP |
2201 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
2202 | if (r != 0) | |
db06e3b6 LP |
2203 | return r; |
2204 | ||
f50e0a01 | 2205 | manager_dispatch_load_queue(m); |
60918275 | 2206 | |
7a6a095a | 2207 | *_ret = unit_follow_merge(*_ret); |
4109ede7 ZJS |
2208 | return 0; |
2209 | } | |
2210 | ||
2211 | int manager_load_startable_unit_or_warn( | |
2212 | Manager *m, | |
2213 | const char *name, | |
2214 | const char *path, | |
2215 | Unit **ret) { | |
2216 | ||
2217 | /* Load a unit, make sure it loaded fully and is not masked. */ | |
2218 | ||
2219 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2220 | Unit *unit; | |
2221 | int r; | |
2222 | ||
2223 | r = manager_load_unit(m, name, path, &error, &unit); | |
2224 | if (r < 0) | |
2225 | return log_error_errno(r, "Failed to load %s %s: %s", | |
8ace1db7 | 2226 | name ? "unit" : "unit file", name ?: path, |
4109ede7 | 2227 | bus_error_message(&error, r)); |
8ace1db7 LP |
2228 | |
2229 | r = bus_unit_validate_load_state(unit, &error); | |
2230 | if (r < 0) | |
2231 | return log_error_errno(r, "%s", bus_error_message(&error, r)); | |
9e2f7c11 | 2232 | |
4109ede7 | 2233 | *ret = unit; |
60918275 LP |
2234 | return 0; |
2235 | } | |
a66d02c3 | 2236 | |
7fad411c LP |
2237 | void manager_clear_jobs(Manager *m) { |
2238 | Job *j; | |
2239 | ||
2240 | assert(m); | |
2241 | ||
7fad411c | 2242 | while ((j = hashmap_first(m->jobs))) |
5273510e | 2243 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 2244 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 2245 | } |
83c60c9f | 2246 | |
f75f613d FB |
2247 | void manager_unwatch_pid(Manager *m, pid_t pid) { |
2248 | assert(m); | |
2249 | ||
2250 | /* First let's drop the unit keyed as "pid". */ | |
2251 | (void) hashmap_remove(m->watch_pids, PID_TO_PTR(pid)); | |
2252 | ||
2253 | /* Then, let's also drop the array keyed by -pid. */ | |
2254 | free(hashmap_remove(m->watch_pids, PID_TO_PTR(-pid))); | |
2255 | } | |
2256 | ||
752b5905 LP |
2257 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
2258 | Manager *m = userdata; | |
83c60c9f | 2259 | Job *j; |
034c6ed7 | 2260 | |
752b5905 LP |
2261 | assert(source); |
2262 | assert(m); | |
9152c765 | 2263 | |
da8e1782 | 2264 | while ((j = prioq_peek(m->run_queue))) { |
ac1135be | 2265 | assert(j->installed); |
034c6ed7 LP |
2266 | assert(j->in_run_queue); |
2267 | ||
6e64994d | 2268 | (void) job_run_and_invalidate(j); |
9152c765 | 2269 | } |
034c6ed7 | 2270 | |
a0b64226 | 2271 | if (m->n_running_jobs > 0) |
03b717a3 MS |
2272 | manager_watch_jobs_in_progress(m); |
2273 | ||
31a7eb86 ZJS |
2274 | if (m->n_on_console > 0) |
2275 | manager_watch_idle_pipe(m); | |
2276 | ||
752b5905 | 2277 | return 1; |
c1e1601e LP |
2278 | } |
2279 | ||
b0c4b282 LP |
2280 | void manager_trigger_run_queue(Manager *m) { |
2281 | int r; | |
2282 | ||
2283 | assert(m); | |
2284 | ||
2285 | r = sd_event_source_set_enabled( | |
2286 | m->run_queue_event_source, | |
2287 | prioq_isempty(m->run_queue) ? SD_EVENT_OFF : SD_EVENT_ONESHOT); | |
2288 | if (r < 0) | |
2289 | log_warning_errno(r, "Failed to enable job run queue event source, ignoring: %m"); | |
2290 | } | |
2291 | ||
9588bc32 | 2292 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
e0a08581 | 2293 | unsigned n = 0, budget; |
595ed347 | 2294 | Unit *u; |
e0a08581 | 2295 | Job *j; |
c1e1601e LP |
2296 | |
2297 | assert(m); | |
2298 | ||
b8d381c4 LP |
2299 | /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly |
2300 | * as we can. There's no point in throttling generation of signals in that case. */ | |
2301 | if (MANAGER_IS_RELOADING(m) || m->send_reloading_done || m->pending_reload_message) | |
f5fbe71d | 2302 | budget = UINT_MAX; /* infinite budget in this case */ |
b8d381c4 LP |
2303 | else { |
2304 | /* Anything to do at all? */ | |
2305 | if (!m->dbus_unit_queue && !m->dbus_job_queue) | |
2306 | return 0; | |
2307 | ||
2308 | /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's | |
2309 | * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */ | |
2310 | if (manager_bus_n_queued_write(m) > MANAGER_BUS_BUSY_THRESHOLD) | |
2311 | return 0; | |
2312 | ||
2313 | /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't | |
2314 | * overly full before this call we shouldn't increase it in size too wildly in one step, and we | |
2315 | * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of | |
2316 | * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message, | |
5238e957 BB |
2317 | * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to |
2318 | * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct | |
b8d381c4 LP |
2319 | * connections it will be counted five times. This difference in counting ("references" |
2320 | * vs. "instances") is primarily a result of the fact that it's easier to implement it this way, | |
2321 | * however it also reflects the thinking that the "threshold" should put a limit on used queue memory, | |
2322 | * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is | |
2323 | * currently chosen much higher than the "budget". */ | |
2324 | budget = MANAGER_BUS_MESSAGE_BUDGET; | |
2325 | } | |
e0a08581 | 2326 | |
b8d381c4 | 2327 | while (budget != 0 && (u = m->dbus_unit_queue)) { |
e0a08581 | 2328 | |
595ed347 | 2329 | assert(u->in_dbus_queue); |
c1e1601e | 2330 | |
595ed347 | 2331 | bus_unit_send_change_signal(u); |
b8d381c4 LP |
2332 | n++; |
2333 | ||
f5fbe71d | 2334 | if (budget != UINT_MAX) |
b8d381c4 | 2335 | budget--; |
c1e1601e LP |
2336 | } |
2337 | ||
b8d381c4 | 2338 | while (budget != 0 && (j = m->dbus_job_queue)) { |
c1e1601e LP |
2339 | assert(j->in_dbus_queue); |
2340 | ||
2341 | bus_job_send_change_signal(j); | |
b8d381c4 LP |
2342 | n++; |
2343 | ||
f5fbe71d | 2344 | if (budget != UINT_MAX) |
b8d381c4 | 2345 | budget--; |
c1e1601e LP |
2346 | } |
2347 | ||
b8d381c4 | 2348 | if (m->send_reloading_done) { |
71445ae7 | 2349 | m->send_reloading_done = false; |
718db961 | 2350 | bus_manager_send_reloading(m, false); |
b8d381c4 | 2351 | n++; |
71445ae7 LP |
2352 | } |
2353 | ||
b8d381c4 | 2354 | if (m->pending_reload_message) { |
209de525 | 2355 | bus_send_pending_reload_message(m); |
e0a08581 LP |
2356 | n++; |
2357 | } | |
718db961 | 2358 | |
c1e1601e | 2359 | return n; |
9152c765 LP |
2360 | } |
2361 | ||
d8fdc620 LP |
2362 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2363 | Manager *m = userdata; | |
60473f0c | 2364 | char buf[PATH_MAX]; |
d8fdc620 LP |
2365 | ssize_t n; |
2366 | ||
2367 | n = recv(fd, buf, sizeof(buf), 0); | |
2368 | if (n < 0) | |
2369 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
2370 | if (n == 0) { | |
2371 | log_error("Got zero-length cgroups agent message, ignoring."); | |
2372 | return 0; | |
2373 | } | |
2374 | if ((size_t) n >= sizeof(buf)) { | |
2375 | log_error("Got overly long cgroups agent message, ignoring."); | |
2376 | return 0; | |
2377 | } | |
2378 | ||
2379 | if (memchr(buf, 0, n)) { | |
2380 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
2381 | return 0; | |
2382 | } | |
2383 | buf[n] = 0; | |
2384 | ||
2385 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 2386 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
2387 | |
2388 | return 0; | |
2389 | } | |
2390 | ||
5151b4cc | 2391 | static bool manager_process_barrier_fd(char * const *tags, FDSet *fds) { |
4f07ddfa KKD |
2392 | |
2393 | /* nothing else must be sent when using BARRIER=1 */ | |
5151b4cc BR |
2394 | if (strv_contains(tags, "BARRIER=1")) { |
2395 | if (strv_length(tags) == 1) { | |
2396 | if (fdset_size(fds) != 1) | |
2397 | log_warning("Got incorrect number of fds with BARRIER=1, closing them."); | |
2398 | } else | |
2399 | log_warning("Extra notification messages sent with BARRIER=1, ignoring everything."); | |
2400 | ||
2401 | /* Drop the message if BARRIER=1 was found */ | |
4f07ddfa | 2402 | return true; |
5151b4cc | 2403 | } |
4f07ddfa KKD |
2404 | |
2405 | return false; | |
2406 | } | |
2407 | ||
db256aab LP |
2408 | static void manager_invoke_notify_message( |
2409 | Manager *m, | |
2410 | Unit *u, | |
2411 | const struct ucred *ucred, | |
5151b4cc | 2412 | char * const *tags, |
db256aab LP |
2413 | FDSet *fds) { |
2414 | ||
5ba6985b LP |
2415 | assert(m); |
2416 | assert(u); | |
db256aab | 2417 | assert(ucred); |
5151b4cc | 2418 | assert(tags); |
5ba6985b | 2419 | |
62a76913 | 2420 | if (u->notifygen == m->notifygen) /* Already invoked on this same unit in this same iteration? */ |
5ba6985b | 2421 | return; |
62a76913 LP |
2422 | u->notifygen = m->notifygen; |
2423 | ||
5151b4cc | 2424 | if (UNIT_VTABLE(u)->notify_message) |
db256aab | 2425 | UNIT_VTABLE(u)->notify_message(u, ucred, tags, fds); |
62a76913 | 2426 | |
5151b4cc BR |
2427 | else if (DEBUG_LOGGING) { |
2428 | _cleanup_free_ char *buf = NULL, *x = NULL, *y = NULL; | |
a86b7675 | 2429 | |
5151b4cc BR |
2430 | buf = strv_join(tags, ", "); |
2431 | if (buf) | |
2432 | x = ellipsize(buf, 20, 90); | |
a86b7675 | 2433 | if (x) |
da5fb861 LP |
2434 | y = cescape(x); |
2435 | ||
a86b7675 ZJS |
2436 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); |
2437 | } | |
5ba6985b LP |
2438 | } |
2439 | ||
718db961 | 2440 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 2441 | |
b215b0ed | 2442 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 2443 | Manager *m = userdata; |
b215b0ed DH |
2444 | char buf[NOTIFY_BUFFER_MAX+1]; |
2445 | struct iovec iovec = { | |
2446 | .iov_base = buf, | |
2447 | .iov_len = sizeof(buf)-1, | |
2448 | }; | |
fb29cdbe LP |
2449 | CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred)) + |
2450 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)) control; | |
b215b0ed DH |
2451 | struct msghdr msghdr = { |
2452 | .msg_iov = &iovec, | |
2453 | .msg_iovlen = 1, | |
2454 | .msg_control = &control, | |
2455 | .msg_controllen = sizeof(control), | |
2456 | }; | |
2457 | ||
2458 | struct cmsghdr *cmsg; | |
2459 | struct ucred *ucred = NULL; | |
62a76913 | 2460 | _cleanup_free_ Unit **array_copy = NULL; |
5151b4cc | 2461 | _cleanup_strv_free_ char **tags = NULL; |
62a76913 | 2462 | Unit *u1, *u2, **array; |
b215b0ed | 2463 | int r, *fd_array = NULL; |
da6053d0 | 2464 | size_t n_fds = 0; |
62a76913 | 2465 | bool found = false; |
8c47c732 LP |
2466 | ssize_t n; |
2467 | ||
2468 | assert(m); | |
718db961 LP |
2469 | assert(m->notify_fd == fd); |
2470 | ||
2471 | if (revents != EPOLLIN) { | |
2472 | log_warning("Got unexpected poll event for notify fd."); | |
2473 | return 0; | |
2474 | } | |
8c47c732 | 2475 | |
3691bcf3 | 2476 | n = recvmsg_safe(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
8add30a0 YW |
2477 | if (n < 0) { |
2478 | if (ERRNO_IS_TRANSIENT(n)) | |
2479 | return 0; /* Spurious wakeup, try again */ | |
2480 | if (n == -EXFULL) { | |
2481 | log_warning("Got message with truncated control data (too many fds sent?), ignoring."); | |
2482 | return 0; | |
2483 | } | |
3691bcf3 LP |
2484 | /* If this is any other, real error, then let's stop processing this socket. This of course |
2485 | * means we won't take notification messages anymore, but that's still better than busy | |
2486 | * looping around this: being woken up over and over again but being unable to actually read | |
2487 | * the message off the socket. */ | |
2488 | return log_error_errno(n, "Failed to receive notification message: %m"); | |
8add30a0 | 2489 | } |
a354329f | 2490 | |
b215b0ed DH |
2491 | CMSG_FOREACH(cmsg, &msghdr) { |
2492 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 2493 | |
3691bcf3 | 2494 | assert(!fd_array); |
b215b0ed DH |
2495 | fd_array = (int*) CMSG_DATA(cmsg); |
2496 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 2497 | |
b215b0ed DH |
2498 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
2499 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
2500 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 2501 | |
3691bcf3 | 2502 | assert(!ucred); |
b215b0ed | 2503 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 2504 | } |
b215b0ed | 2505 | } |
a354329f | 2506 | |
b215b0ed DH |
2507 | if (n_fds > 0) { |
2508 | assert(fd_array); | |
a354329f | 2509 | |
b215b0ed DH |
2510 | r = fdset_new_array(&fds, fd_array, n_fds); |
2511 | if (r < 0) { | |
2512 | close_many(fd_array, n_fds); | |
9987750e FB |
2513 | log_oom(); |
2514 | return 0; | |
a354329f | 2515 | } |
b215b0ed | 2516 | } |
8c47c732 | 2517 | |
15e23e8c | 2518 | if (!ucred || !pid_is_valid(ucred->pid)) { |
b215b0ed DH |
2519 | log_warning("Received notify message without valid credentials. Ignoring."); |
2520 | return 0; | |
2521 | } | |
8c47c732 | 2522 | |
045a3d59 | 2523 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
2524 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
2525 | return 0; | |
2526 | } | |
8c47c732 | 2527 | |
875ca88d LP |
2528 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
2529 | * trailing NUL byte in the message, but don't expect it. */ | |
2530 | if (n > 1 && memchr(buf, 0, n-1)) { | |
2531 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
2532 | return 0; | |
2533 | } | |
2534 | ||
5151b4cc | 2535 | /* Make sure it's NUL-terminated, then parse it to obtain the tags list */ |
b215b0ed | 2536 | buf[n] = 0; |
5151b4cc BR |
2537 | tags = strv_split_newlines(buf); |
2538 | if (!tags) { | |
2539 | log_oom(); | |
2540 | return 0; | |
2541 | } | |
8c47c732 | 2542 | |
4f07ddfa | 2543 | /* possibly a barrier fd, let's see */ |
5151b4cc | 2544 | if (manager_process_barrier_fd(tags, fds)) |
4f07ddfa KKD |
2545 | return 0; |
2546 | ||
62a76913 LP |
2547 | /* Increase the generation counter used for filtering out duplicate unit invocations. */ |
2548 | m->notifygen++; | |
2549 | ||
2550 | /* Notify every unit that might be interested, which might be multiple. */ | |
b215b0ed | 2551 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); |
62a76913 LP |
2552 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(ucred->pid)); |
2553 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-ucred->pid)); | |
2554 | if (array) { | |
2555 | size_t k = 0; | |
5ba6985b | 2556 | |
62a76913 LP |
2557 | while (array[k]) |
2558 | k++; | |
5ba6985b | 2559 | |
62a76913 LP |
2560 | array_copy = newdup(Unit*, array, k+1); |
2561 | if (!array_copy) | |
2562 | log_oom(); | |
2563 | } | |
2564 | /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units | |
2565 | * make sure we only invoke each unit's handler once. */ | |
2566 | if (u1) { | |
5151b4cc | 2567 | manager_invoke_notify_message(m, u1, ucred, tags, fds); |
62a76913 LP |
2568 | found = true; |
2569 | } | |
2570 | if (u2) { | |
5151b4cc | 2571 | manager_invoke_notify_message(m, u2, ucred, tags, fds); |
62a76913 LP |
2572 | found = true; |
2573 | } | |
2574 | if (array_copy) | |
2575 | for (size_t i = 0; array_copy[i]; i++) { | |
5151b4cc | 2576 | manager_invoke_notify_message(m, array_copy[i], ucred, tags, fds); |
62a76913 LP |
2577 | found = true; |
2578 | } | |
8c47c732 | 2579 | |
62a76913 LP |
2580 | if (!found) |
2581 | log_warning("Cannot find unit for notify message of PID "PID_FMT", ignoring.", ucred->pid); | |
a354329f | 2582 | |
b215b0ed | 2583 | if (fdset_size(fds) > 0) |
5fd2c135 | 2584 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2585 | |
2586 | return 0; | |
2587 | } | |
2588 | ||
62a76913 LP |
2589 | static void manager_invoke_sigchld_event( |
2590 | Manager *m, | |
2591 | Unit *u, | |
2592 | const siginfo_t *si) { | |
36f20ae3 | 2593 | |
5ba6985b LP |
2594 | assert(m); |
2595 | assert(u); | |
2596 | assert(si); | |
2597 | ||
62a76913 LP |
2598 | /* Already invoked the handler of this unit in this iteration? Then don't process this again */ |
2599 | if (u->sigchldgen == m->sigchldgen) | |
2600 | return; | |
2601 | u->sigchldgen = m->sigchldgen; | |
5ba6985b | 2602 | |
62a76913 | 2603 | log_unit_debug(u, "Child "PID_FMT" belongs to %s.", si->si_pid, u->id); |
5ba6985b | 2604 | unit_unwatch_pid(u, si->si_pid); |
e57051f5 | 2605 | |
62a76913 LP |
2606 | if (UNIT_VTABLE(u)->sigchld_event) |
2607 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
5ba6985b LP |
2608 | } |
2609 | ||
575b300b LP |
2610 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata) { |
2611 | Manager *m = userdata; | |
2612 | siginfo_t si = {}; | |
2613 | int r; | |
2614 | ||
2615 | assert(source); | |
9152c765 LP |
2616 | assert(m); |
2617 | ||
0a51b45c | 2618 | /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it |
575b300b | 2619 | * while it is a zombie. */ |
9152c765 | 2620 | |
575b300b | 2621 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { |
acbb0225 | 2622 | |
8afabc50 AJ |
2623 | if (errno != ECHILD) |
2624 | log_error_errno(errno, "Failed to peek for child with waitid(), ignoring: %m"); | |
acbb0225 | 2625 | |
8afabc50 | 2626 | goto turn_off; |
575b300b | 2627 | } |
4112df16 | 2628 | |
575b300b LP |
2629 | if (si.si_pid <= 0) |
2630 | goto turn_off; | |
2631 | ||
2632 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { | |
62a76913 | 2633 | _cleanup_free_ Unit **array_copy = NULL; |
575b300b | 2634 | _cleanup_free_ char *name = NULL; |
62a76913 | 2635 | Unit *u1, *u2, **array; |
575b300b LP |
2636 | |
2637 | (void) get_process_comm(si.si_pid, &name); | |
2638 | ||
2639 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
2640 | si.si_pid, strna(name), | |
2641 | sigchld_code_to_string(si.si_code), | |
2642 | si.si_status, | |
2643 | strna(si.si_code == CLD_EXITED | |
2644 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2645 | : signal_to_string(si.si_status))); | |
2646 | ||
62a76913 LP |
2647 | /* Increase the generation counter used for filtering out duplicate unit invocations */ |
2648 | m->sigchldgen++; | |
2649 | ||
2650 | /* And now figure out the unit this belongs to, it might be multiple... */ | |
575b300b | 2651 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
62a76913 LP |
2652 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(si.si_pid)); |
2653 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-si.si_pid)); | |
2654 | if (array) { | |
2655 | size_t n = 0; | |
2656 | ||
5238e957 | 2657 | /* Count how many entries the array has */ |
62a76913 LP |
2658 | while (array[n]) |
2659 | n++; | |
2660 | ||
2661 | /* Make a copy of the array so that we don't trip up on the array changing beneath us */ | |
2662 | array_copy = newdup(Unit*, array, n+1); | |
2663 | if (!array_copy) | |
2664 | log_oom(); | |
2665 | } | |
2666 | ||
2667 | /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but | |
2668 | * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for | |
2669 | * each iteration. */ | |
2ba6ae6b ZJS |
2670 | if (u1) { |
2671 | /* We check for oom condition, in case we got SIGCHLD before the oom notification. | |
2672 | * We only do this for the cgroup the PID belonged to. */ | |
2673 | (void) unit_check_oom(u1); | |
2674 | ||
288bd406 | 2675 | /* We check if systemd-oomd performed a kill so that we log and notify appropriately */ |
fe8d22fb AZ |
2676 | (void) unit_check_oomd_kill(u1); |
2677 | ||
62a76913 | 2678 | manager_invoke_sigchld_event(m, u1, &si); |
2ba6ae6b | 2679 | } |
62a76913 LP |
2680 | if (u2) |
2681 | manager_invoke_sigchld_event(m, u2, &si); | |
2682 | if (array_copy) | |
2683 | for (size_t i = 0; array_copy[i]; i++) | |
2684 | manager_invoke_sigchld_event(m, array_copy[i], &si); | |
575b300b | 2685 | } |
9152c765 | 2686 | |
575b300b LP |
2687 | /* And now, we actually reap the zombie. */ |
2688 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2689 | log_error_errno(errno, "Failed to dequeue child, ignoring: %m"); | |
2690 | return 0; | |
2691 | } | |
9152c765 | 2692 | |
575b300b | 2693 | return 0; |
8c47c732 | 2694 | |
575b300b LP |
2695 | turn_off: |
2696 | /* All children processed for now, turn off event source */ | |
4112df16 | 2697 | |
575b300b LP |
2698 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); |
2699 | if (r < 0) | |
2700 | return log_error_errno(r, "Failed to disable SIGCHLD event source: %m"); | |
9152c765 LP |
2701 | |
2702 | return 0; | |
2703 | } | |
2704 | ||
5f968096 ZJS |
2705 | static void manager_start_special(Manager *m, const char *name, JobMode mode) { |
2706 | Job *job; | |
398ef8ba | 2707 | |
5f968096 ZJS |
2708 | if (manager_add_job_by_name_and_warn(m, JOB_START, name, mode, NULL, &job) < 0) |
2709 | return; | |
1e001f52 | 2710 | |
5f968096 ZJS |
2711 | const char *s = unit_status_string(job->unit, NULL); |
2712 | ||
2713 | log_info("Activating special unit %s...", s); | |
3889fc6f ZJS |
2714 | |
2715 | sd_notifyf(false, | |
2716 | "STATUS=Activating special unit %s...", s); | |
2717 | m->status_ready = false; | |
28247076 LP |
2718 | } |
2719 | ||
24dd31c1 LN |
2720 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2721 | /* If the user presses C-A-D more than | |
2722 | * 7 times within 2s, we reboot/shutdown immediately, | |
2723 | * unless it was disabled in system.conf */ | |
2724 | ||
7994ac1d | 2725 | if (ratelimit_below(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
5f968096 | 2726 | manager_start_special(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 | 2727 | else |
7af67e9a | 2728 | emergency_action(m, m->cad_burst_action, EMERGENCY_ACTION_WARN, NULL, -1, |
ae8c7939 | 2729 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); |
24dd31c1 LN |
2730 | } |
2731 | ||
718db961 LP |
2732 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2733 | Manager *m = userdata; | |
9152c765 LP |
2734 | ssize_t n; |
2735 | struct signalfd_siginfo sfsi; | |
dacd6cee | 2736 | int r; |
9152c765 LP |
2737 | |
2738 | assert(m); | |
718db961 LP |
2739 | assert(m->signal_fd == fd); |
2740 | ||
2741 | if (revents != EPOLLIN) { | |
2742 | log_warning("Got unexpected events from signal file descriptor."); | |
2743 | return 0; | |
2744 | } | |
9152c765 | 2745 | |
575b300b | 2746 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
8add30a0 YW |
2747 | if (n < 0) { |
2748 | if (ERRNO_IS_TRANSIENT(errno)) | |
575b300b | 2749 | return 0; |
9152c765 | 2750 | |
575b300b LP |
2751 | /* We return an error here, which will kill this handler, |
2752 | * to avoid a busy loop on read error. */ | |
2753 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
2754 | } | |
8add30a0 YW |
2755 | if (n != sizeof(sfsi)) { |
2756 | log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n); | |
2757 | return 0; | |
2758 | } | |
9152c765 | 2759 | |
575b300b LP |
2760 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
2761 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) | |
2762 | ? LOG_DEBUG : LOG_INFO, | |
2763 | &sfsi); | |
1e001f52 | 2764 | |
575b300b | 2765 | switch (sfsi.ssi_signo) { |
b9cd2ec1 | 2766 | |
575b300b LP |
2767 | case SIGCHLD: |
2768 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
2769 | if (r < 0) | |
8afabc50 | 2770 | log_warning_errno(r, "Failed to enable SIGCHLD event source, ignoring: %m"); |
b9cd2ec1 | 2771 | |
575b300b | 2772 | break; |
84e9af1e | 2773 | |
575b300b LP |
2774 | case SIGTERM: |
2775 | if (MANAGER_IS_SYSTEM(m)) { | |
ba0c7754 | 2776 | /* This is for compatibility with the original sysvinit */ |
c52b19d6 LP |
2777 | if (verify_run_space_and_log("Refusing to reexecute") < 0) |
2778 | break; | |
2779 | ||
2780 | m->objective = MANAGER_REEXECUTE; | |
a1b256b0 | 2781 | break; |
575b300b | 2782 | } |
84e9af1e | 2783 | |
575b300b LP |
2784 | _fallthrough_; |
2785 | case SIGINT: | |
2786 | if (MANAGER_IS_SYSTEM(m)) | |
2787 | manager_handle_ctrl_alt_del(m); | |
2788 | else | |
5f968096 | 2789 | manager_start_special(m, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY); |
575b300b | 2790 | break; |
84e9af1e | 2791 | |
575b300b | 2792 | case SIGWINCH: |
ba0c7754 | 2793 | /* This is a nop on non-init */ |
575b300b | 2794 | if (MANAGER_IS_SYSTEM(m)) |
5f968096 | 2795 | manager_start_special(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2796 | |
575b300b | 2797 | break; |
84e9af1e | 2798 | |
575b300b | 2799 | case SIGPWR: |
ba0c7754 | 2800 | /* This is a nop on non-init */ |
575b300b | 2801 | if (MANAGER_IS_SYSTEM(m)) |
5f968096 | 2802 | manager_start_special(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
6632c602 | 2803 | |
575b300b | 2804 | break; |
57ee42ce | 2805 | |
8559b3b7 | 2806 | case SIGUSR1: |
8559b3b7 | 2807 | if (manager_dbus_is_running(m, false)) { |
575b300b | 2808 | log_info("Trying to reconnect to bus..."); |
575b300b | 2809 | |
8559b3b7 LP |
2810 | (void) bus_init_api(m); |
2811 | ||
2812 | if (MANAGER_IS_SYSTEM(m)) | |
2813 | (void) bus_init_system(m); | |
5f968096 ZJS |
2814 | } else |
2815 | manager_start_special(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); | |
57ee42ce | 2816 | |
575b300b | 2817 | break; |
575b300b LP |
2818 | |
2819 | case SIGUSR2: { | |
2820 | _cleanup_free_ char *dump = NULL; | |
2821 | ||
2822 | r = manager_get_dump_string(m, &dump); | |
2823 | if (r < 0) { | |
2824 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); | |
57ee42ce LP |
2825 | break; |
2826 | } | |
2827 | ||
575b300b LP |
2828 | log_dump(LOG_INFO, dump); |
2829 | break; | |
2830 | } | |
2149e37c | 2831 | |
575b300b | 2832 | case SIGHUP: |
c52b19d6 LP |
2833 | if (verify_run_space_and_log("Refusing to reload") < 0) |
2834 | break; | |
2835 | ||
2836 | m->objective = MANAGER_RELOAD; | |
575b300b LP |
2837 | break; |
2838 | ||
2839 | default: { | |
2840 | ||
2841 | /* Starting SIGRTMIN+0 */ | |
2842 | static const struct { | |
2843 | const char *target; | |
2844 | JobMode mode; | |
2845 | } target_table[] = { | |
2846 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2847 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2848 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2849 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2850 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2851 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2852 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2853 | }; | |
2854 | ||
2855 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
af41e508 | 2856 | static const ManagerObjective objective_table[] = { |
575b300b LP |
2857 | [0] = MANAGER_HALT, |
2858 | [1] = MANAGER_POWEROFF, | |
2859 | [2] = MANAGER_REBOOT, | |
2860 | [3] = MANAGER_KEXEC, | |
2861 | }; | |
b2cdc666 | 2862 | |
575b300b LP |
2863 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && |
2864 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
2865 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
5f968096 | 2866 | manager_start_special(m, target_table[idx].target, target_table[idx].mode); |
1005d14f | 2867 | break; |
2149e37c | 2868 | } |
1005d14f | 2869 | |
575b300b | 2870 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
af41e508 LP |
2871 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(objective_table)) { |
2872 | m->objective = objective_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
575b300b LP |
2873 | break; |
2874 | } | |
2875 | ||
2876 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
2877 | ||
2878 | case 20: | |
43bba15a | 2879 | manager_override_show_status(m, SHOW_STATUS_YES, "signal"); |
a16e1123 LP |
2880 | break; |
2881 | ||
575b300b | 2882 | case 21: |
43bba15a | 2883 | manager_override_show_status(m, SHOW_STATUS_NO, "signal"); |
575b300b | 2884 | break; |
7d793605 | 2885 | |
575b300b | 2886 | case 22: |
a6ecbf83 | 2887 | manager_override_log_level(m, LOG_DEBUG); |
575b300b LP |
2888 | break; |
2889 | ||
2890 | case 23: | |
a6ecbf83 | 2891 | manager_restore_original_log_level(m); |
575b300b | 2892 | break; |
0003d1ab | 2893 | |
575b300b LP |
2894 | case 24: |
2895 | if (MANAGER_IS_USER(m)) { | |
af41e508 | 2896 | m->objective = MANAGER_EXIT; |
575b300b | 2897 | return 0; |
0658666b | 2898 | } |
9152c765 | 2899 | |
575b300b LP |
2900 | /* This is a nop on init */ |
2901 | break; | |
2902 | ||
463aef23 FB |
2903 | case 25: |
2904 | m->objective = MANAGER_REEXECUTE; | |
2905 | break; | |
2906 | ||
575b300b LP |
2907 | case 26: |
2908 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
bda7d78b | 2909 | manager_restore_original_log_target(m); |
575b300b LP |
2910 | break; |
2911 | ||
2912 | case 27: | |
bda7d78b | 2913 | manager_override_log_target(m, LOG_TARGET_CONSOLE); |
575b300b LP |
2914 | break; |
2915 | ||
2916 | case 28: | |
bda7d78b | 2917 | manager_override_log_target(m, LOG_TARGET_KMSG); |
575b300b LP |
2918 | break; |
2919 | ||
2920 | default: | |
2921 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
2922 | } | |
2923 | }} | |
034c6ed7 LP |
2924 | |
2925 | return 0; | |
2926 | } | |
2927 | ||
718db961 LP |
2928 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2929 | Manager *m = userdata; | |
718db961 | 2930 | Unit *u; |
034c6ed7 LP |
2931 | |
2932 | assert(m); | |
034c6ed7 | 2933 | |
a80c1575 | 2934 | log_struct(LOG_DEBUG, |
2b044526 | 2935 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
a1230ff9 | 2936 | LOG_MESSAGE("Time has been changed")); |
034c6ed7 | 2937 | |
718db961 | 2938 | /* Restart the watch */ |
7feedd18 | 2939 | (void) manager_setup_time_change(m); |
4e434314 | 2940 | |
90e74a66 | 2941 | HASHMAP_FOREACH(u, m->units) |
718db961 LP |
2942 | if (UNIT_VTABLE(u)->time_change) |
2943 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2944 | |
718db961 LP |
2945 | return 0; |
2946 | } | |
ea430986 | 2947 | |
bbf5fd8e LP |
2948 | static int manager_dispatch_timezone_change( |
2949 | sd_event_source *source, | |
2950 | const struct inotify_event *e, | |
2951 | void *userdata) { | |
2952 | ||
2953 | Manager *m = userdata; | |
2954 | int changed; | |
bbf5fd8e LP |
2955 | Unit *u; |
2956 | ||
2957 | assert(m); | |
2958 | ||
2959 | log_debug("inotify event for /etc/localtime"); | |
2960 | ||
2961 | changed = manager_read_timezone_stat(m); | |
f20db199 | 2962 | if (changed <= 0) |
bbf5fd8e | 2963 | return changed; |
bbf5fd8e LP |
2964 | |
2965 | /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */ | |
2966 | (void) manager_setup_timezone_change(m); | |
2967 | ||
2968 | /* Read the new timezone */ | |
2969 | tzset(); | |
2970 | ||
2971 | log_debug("Timezone has been changed (now: %s).", tzname[daylight]); | |
2972 | ||
90e74a66 | 2973 | HASHMAP_FOREACH(u, m->units) |
bbf5fd8e LP |
2974 | if (UNIT_VTABLE(u)->timezone_change) |
2975 | UNIT_VTABLE(u)->timezone_change(u); | |
2976 | ||
2977 | return 0; | |
2978 | } | |
2979 | ||
718db961 LP |
2980 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2981 | Manager *m = userdata; | |
8742514c | 2982 | |
718db961 LP |
2983 | assert(m); |
2984 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2985 | |
5a69973f LP |
2986 | /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's |
2987 | * now turn off any further console output if there's at least one service that needs console access, so that | |
2988 | * from now on our own output should not spill into that service's output anymore. After all, we support | |
2989 | * Type=idle only to beautify console output and it generally is set on services that want to own the console | |
2990 | * exclusively without our interference. */ | |
718db961 | 2991 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2992 | |
5a69973f LP |
2993 | /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer |
2994 | * by closing the pipes towards them, which is what they are waiting for. */ | |
718db961 | 2995 | manager_close_idle_pipe(m); |
03b717a3 | 2996 | |
718db961 LP |
2997 | return 0; |
2998 | } | |
31a7eb86 | 2999 | |
718db961 LP |
3000 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
3001 | Manager *m = userdata; | |
fd08a840 | 3002 | int r; |
31a7eb86 | 3003 | |
718db961 | 3004 | assert(m); |
fd08a840 | 3005 | assert(source); |
9152c765 | 3006 | |
718db961 | 3007 | manager_print_jobs_in_progress(m); |
fd08a840 | 3008 | |
39cf0351 | 3009 | r = sd_event_source_set_time_relative(source, JOBS_IN_PROGRESS_PERIOD_USEC); |
fd08a840 ZJS |
3010 | if (r < 0) |
3011 | return r; | |
3012 | ||
3013 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
3014 | } |
3015 | ||
3016 | int manager_loop(Manager *m) { | |
8c227e7f | 3017 | RateLimit rl = { .interval = 1*USEC_PER_SEC, .burst = 50000 }; |
9152c765 | 3018 | int r; |
9152c765 LP |
3019 | |
3020 | assert(m); | |
1fb70e66 | 3021 | assert(m->objective == MANAGER_OK); /* Ensure manager_startup() has been called */ |
9152c765 | 3022 | |
b0c918b9 LP |
3023 | manager_check_finished(m); |
3024 | ||
575b300b LP |
3025 | /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */ |
3026 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
e96d6be7 | 3027 | if (r < 0) |
575b300b | 3028 | return log_error_errno(r, "Failed to enable SIGCHLD event source: %m"); |
a4312405 | 3029 | |
af41e508 | 3030 | while (m->objective == MANAGER_OK) { |
9152c765 | 3031 | |
ae4a0ec4 | 3032 | (void) watchdog_ping(); |
e96d6be7 | 3033 | |
7994ac1d | 3034 | if (!ratelimit_below(&rl)) { |
ea430986 LP |
3035 | /* Yay, something is going seriously wrong, pause a little */ |
3036 | log_warning("Looping too fast. Throttling execution a little."); | |
3037 | sleep(1); | |
3038 | } | |
3039 | ||
37a8e683 | 3040 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
3041 | continue; |
3042 | ||
c5a97ed1 LP |
3043 | if (manager_dispatch_gc_job_queue(m) > 0) |
3044 | continue; | |
3045 | ||
3046 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
3047 | continue; |
3048 | ||
cf1265e1 | 3049 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 3050 | continue; |
034c6ed7 | 3051 | |
91a6073e | 3052 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
3053 | continue; |
3054 | ||
0bc488c9 LP |
3055 | if (manager_dispatch_start_when_upheld_queue(m) > 0) |
3056 | continue; | |
3057 | ||
56c59592 LP |
3058 | if (manager_dispatch_stop_when_bound_queue(m) > 0) |
3059 | continue; | |
3060 | ||
a3c1168a LP |
3061 | if (manager_dispatch_stop_when_unneeded_queue(m) > 0) |
3062 | continue; | |
3063 | ||
c1e1601e | 3064 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 3065 | continue; |
ea430986 | 3066 | |
c5f8a179 | 3067 | /* Sleep for watchdog runtime wait time */ |
12663295 | 3068 | r = sd_event_run(m->event, watchdog_runtime_wait()); |
23bbb0de MS |
3069 | if (r < 0) |
3070 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 3071 | } |
957ca890 | 3072 | |
af41e508 | 3073 | return m->objective; |
83c60c9f | 3074 | } |
ea430986 | 3075 | |
718db961 | 3076 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 3077 | _cleanup_free_ char *n = NULL; |
4b58153d | 3078 | sd_id128_t invocation_id; |
ea430986 | 3079 | Unit *u; |
80fbf05e | 3080 | int r; |
ea430986 LP |
3081 | |
3082 | assert(m); | |
3083 | assert(s); | |
3084 | assert(_u); | |
3085 | ||
ede3a796 LP |
3086 | r = unit_name_from_dbus_path(s, &n); |
3087 | if (r < 0) | |
3088 | return r; | |
ea430986 | 3089 | |
4b58153d LP |
3090 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
3091 | * as invocation ID. */ | |
3092 | r = sd_id128_from_string(n, &invocation_id); | |
3093 | if (r >= 0) { | |
3094 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
3095 | if (u) { | |
3096 | *_u = u; | |
3097 | return 0; | |
3098 | } | |
3099 | ||
930c124c ZJS |
3100 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, |
3101 | "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", | |
3102 | SD_ID128_FORMAT_VAL(invocation_id)); | |
4b58153d LP |
3103 | } |
3104 | ||
00c83b43 | 3105 | /* If this didn't work, we check if this is a unit name */ |
930c124c ZJS |
3106 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
3107 | _cleanup_free_ char *nn = NULL; | |
3108 | ||
3109 | nn = cescape(n); | |
3110 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, | |
3111 | "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn)); | |
3112 | } | |
00c83b43 | 3113 | |
80fbf05e | 3114 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
3115 | if (r < 0) |
3116 | return r; | |
ea430986 LP |
3117 | |
3118 | *_u = u; | |
ea430986 LP |
3119 | return 0; |
3120 | } | |
86fbf370 LP |
3121 | |
3122 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 3123 | const char *p; |
86fbf370 | 3124 | unsigned id; |
718db961 | 3125 | Job *j; |
86fbf370 LP |
3126 | int r; |
3127 | ||
3128 | assert(m); | |
3129 | assert(s); | |
3130 | assert(_j); | |
3131 | ||
718db961 LP |
3132 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
3133 | if (!p) | |
86fbf370 LP |
3134 | return -EINVAL; |
3135 | ||
718db961 | 3136 | r = safe_atou(p, &id); |
8742514c | 3137 | if (r < 0) |
86fbf370 LP |
3138 | return r; |
3139 | ||
8742514c LP |
3140 | j = manager_get_job(m, id); |
3141 | if (!j) | |
86fbf370 LP |
3142 | return -ENOENT; |
3143 | ||
3144 | *_j = j; | |
3145 | ||
3146 | return 0; | |
3147 | } | |
dfcd764e | 3148 | |
4927fcae | 3149 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 3150 | |
349cc4a5 | 3151 | #if HAVE_AUDIT |
2ba11090 | 3152 | _cleanup_free_ char *p = NULL; |
0aa281df | 3153 | const char *msg; |
7410616c | 3154 | int audit_fd, r; |
e537352b | 3155 | |
463d0d15 | 3156 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
3157 | return; |
3158 | ||
c1165f82 LP |
3159 | audit_fd = get_audit_fd(); |
3160 | if (audit_fd < 0) | |
e537352b LP |
3161 | return; |
3162 | ||
bbd3a7ba LP |
3163 | /* Don't generate audit events if the service was already |
3164 | * started and we're just deserializing */ | |
2c289ea8 | 3165 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
3166 | return; |
3167 | ||
ac155bb8 | 3168 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
3169 | return; |
3170 | ||
7410616c LP |
3171 | r = unit_name_to_prefix_and_instance(u->id, &p); |
3172 | if (r < 0) { | |
3173 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
3174 | return; |
3175 | } | |
3176 | ||
63c372cb | 3177 | msg = strjoina("unit=", p); |
0aa281df LP |
3178 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
3179 | if (errno == EPERM) | |
391ade86 | 3180 | /* We aren't allowed to send audit messages? |
44785992 | 3181 | * Then let's not retry again. */ |
c1165f82 | 3182 | close_audit_fd(); |
0aa281df | 3183 | else |
56f64d95 | 3184 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 3185 | } |
4927fcae | 3186 | #endif |
e537352b | 3187 | |
e537352b LP |
3188 | } |
3189 | ||
e983b760 | 3190 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 3191 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
3192 | _cleanup_free_ char *message = NULL; |
3193 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 3194 | int n = 0; |
e983b760 LP |
3195 | |
3196 | /* Don't generate plymouth events if the service was already | |
3197 | * started and we're just deserializing */ | |
2c289ea8 | 3198 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
3199 | return; |
3200 | ||
463d0d15 | 3201 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
3202 | return; |
3203 | ||
75f86906 | 3204 | if (detect_container() > 0) |
3772995a LP |
3205 | return; |
3206 | ||
ec2ce0c5 | 3207 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
3208 | return; |
3209 | ||
3210 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
3211 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
3212 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
3213 | if (fd < 0) { | |
56f64d95 | 3214 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
3215 | return; |
3216 | } | |
3217 | ||
fc2fffe7 | 3218 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
f60a028a | 3219 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3220 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 3221 | return; |
e983b760 LP |
3222 | } |
3223 | ||
305757d8 ZJS |
3224 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) |
3225 | return (void) log_oom(); | |
e983b760 LP |
3226 | |
3227 | errno = 0; | |
2ba11090 | 3228 | if (write(fd, message, n + 1) != n + 1) |
f60a028a | 3229 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3230 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
3231 | } |
3232 | ||
986935cf FB |
3233 | usec_t manager_get_watchdog(Manager *m, WatchdogType t) { |
3234 | assert(m); | |
3235 | ||
3236 | if (MANAGER_IS_USER(m)) | |
3237 | return USEC_INFINITY; | |
3238 | ||
3239 | if (timestamp_is_set(m->watchdog_overridden[t])) | |
3240 | return m->watchdog_overridden[t]; | |
3241 | ||
3242 | return m->watchdog[t]; | |
3243 | } | |
3244 | ||
3245 | void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout) { | |
986935cf FB |
3246 | |
3247 | assert(m); | |
3248 | ||
3249 | if (MANAGER_IS_USER(m)) | |
3250 | return; | |
3251 | ||
3252 | if (m->watchdog[t] == timeout) | |
3253 | return; | |
3254 | ||
5717062e | 3255 | if (t == WATCHDOG_RUNTIME) { |
f16890f8 FB |
3256 | if (!timestamp_is_set(m->watchdog_overridden[WATCHDOG_RUNTIME])) |
3257 | (void) watchdog_setup(timeout); | |
5717062e CK |
3258 | } else if (t == WATCHDOG_PRETIMEOUT) |
3259 | if (m->watchdog_overridden[WATCHDOG_PRETIMEOUT] == USEC_INFINITY) | |
3260 | (void) watchdog_setup_pretimeout(timeout); | |
986935cf | 3261 | |
61927b9f | 3262 | m->watchdog[t] = timeout; |
986935cf FB |
3263 | } |
3264 | ||
aac47032 | 3265 | void manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout) { |
986935cf FB |
3266 | |
3267 | assert(m); | |
3268 | ||
3269 | if (MANAGER_IS_USER(m)) | |
aac47032 | 3270 | return; |
986935cf FB |
3271 | |
3272 | if (m->watchdog_overridden[t] == timeout) | |
aac47032 | 3273 | return; |
986935cf FB |
3274 | |
3275 | if (t == WATCHDOG_RUNTIME) { | |
2628b98f | 3276 | usec_t usec = timestamp_is_set(timeout) ? timeout : m->watchdog[t]; |
986935cf | 3277 | |
f16890f8 | 3278 | (void) watchdog_setup(usec); |
5717062e CK |
3279 | } else if (t == WATCHDOG_PRETIMEOUT) |
3280 | (void) watchdog_setup_pretimeout(timeout); | |
986935cf | 3281 | |
61927b9f | 3282 | m->watchdog_overridden[t] = timeout; |
986935cf FB |
3283 | } |
3284 | ||
aff3a9e1 LB |
3285 | int manager_set_watchdog_pretimeout_governor(Manager *m, const char *governor) { |
3286 | _cleanup_free_ char *p = NULL; | |
3287 | int r; | |
3288 | ||
3289 | assert(m); | |
3290 | ||
3291 | if (MANAGER_IS_USER(m)) | |
3292 | return 0; | |
3293 | ||
3294 | if (streq_ptr(m->watchdog_pretimeout_governor, governor)) | |
3295 | return 0; | |
3296 | ||
3297 | p = strdup(governor); | |
3298 | if (!p) | |
3299 | return -ENOMEM; | |
3300 | ||
3301 | r = watchdog_setup_pretimeout_governor(governor); | |
3302 | if (r < 0) | |
3303 | return r; | |
3304 | ||
3305 | return free_and_replace(m->watchdog_pretimeout_governor, p); | |
3306 | } | |
3307 | ||
3308 | int manager_override_watchdog_pretimeout_governor(Manager *m, const char *governor) { | |
3309 | _cleanup_free_ char *p = NULL; | |
3310 | int r; | |
3311 | ||
3312 | assert(m); | |
3313 | ||
3314 | if (MANAGER_IS_USER(m)) | |
3315 | return 0; | |
3316 | ||
3317 | if (streq_ptr(m->watchdog_pretimeout_governor_overridden, governor)) | |
3318 | return 0; | |
3319 | ||
3320 | p = strdup(governor); | |
3321 | if (!p) | |
3322 | return -ENOMEM; | |
3323 | ||
3324 | r = watchdog_setup_pretimeout_governor(governor); | |
3325 | if (r < 0) | |
3326 | return r; | |
3327 | ||
3328 | return free_and_replace(m->watchdog_pretimeout_governor_overridden, p); | |
3329 | } | |
3330 | ||
a16e1123 | 3331 | int manager_reload(Manager *m) { |
d7ac0952 | 3332 | _unused_ _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
51d122af | 3333 | _cleanup_fdset_free_ FDSet *fds = NULL; |
6a33af40 LP |
3334 | _cleanup_fclose_ FILE *f = NULL; |
3335 | int r; | |
a16e1123 LP |
3336 | |
3337 | assert(m); | |
3338 | ||
07719a21 LP |
3339 | r = manager_open_serialization(m, &f); |
3340 | if (r < 0) | |
6a33af40 | 3341 | return log_error_errno(r, "Failed to create serialization file: %m"); |
38c52d46 | 3342 | |
07719a21 | 3343 | fds = fdset_new(); |
6a33af40 LP |
3344 | if (!fds) |
3345 | return log_oom(); | |
3346 | ||
d147e2b6 ZJS |
3347 | /* We are officially in reload mode from here on. */ |
3348 | reloading = manager_reloading_start(m); | |
a16e1123 | 3349 | |
b3680f49 | 3350 | r = manager_serialize(m, f, fds, false); |
d147e2b6 | 3351 | if (r < 0) |
d68c645b | 3352 | return r; |
a16e1123 | 3353 | |
d147e2b6 ZJS |
3354 | if (fseeko(f, 0, SEEK_SET) < 0) |
3355 | return log_error_errno(errno, "Failed to seek to beginning of serialization: %m"); | |
a16e1123 | 3356 | |
6a33af40 | 3357 | /* 💀 This is the point of no return, from here on there is no way back. 💀 */ |
d147e2b6 | 3358 | reloading = NULL; |
6a33af40 LP |
3359 | |
3360 | bus_manager_send_reloading(m, true); | |
3361 | ||
3362 | /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users | |
3363 | * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need | |
7802194a | 3364 | * it. */ |
6a33af40 | 3365 | |
a16e1123 | 3366 | manager_clear_jobs_and_units(m); |
07a78643 | 3367 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 3368 | lookup_paths_free(&m->lookup_paths); |
e8a565cb | 3369 | exec_runtime_vacuum(m); |
29206d46 | 3370 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
3371 | m->uid_refs = hashmap_free(m->uid_refs); |
3372 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 3373 | |
99aad9a2 | 3374 | r = lookup_paths_init_or_warn(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
6a33af40 | 3375 | if (r < 0) |
99aad9a2 | 3376 | return r; |
5a1e9937 | 3377 | |
6a33af40 LP |
3378 | (void) manager_run_environment_generators(m); |
3379 | (void) manager_run_generators(m); | |
64691d20 | 3380 | |
581fef8d | 3381 | lookup_paths_log(&m->lookup_paths); |
07719a21 | 3382 | |
91e0ee5f | 3383 | /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */ |
e8630e69 | 3384 | manager_free_unit_name_maps(m); |
5a1e9937 | 3385 | |
6a33af40 | 3386 | /* First, enumerate what we can from kernel and suchlike */ |
3ad2afb6 | 3387 | manager_enumerate_perpetual(m); |
ba64af90 | 3388 | manager_enumerate(m); |
a16e1123 LP |
3389 | |
3390 | /* Second, deserialize our stored data */ | |
6a33af40 LP |
3391 | r = manager_deserialize(m, f, fds); |
3392 | if (r < 0) | |
3393 | log_warning_errno(r, "Deserialization failed, proceeding anyway: %m"); | |
a16e1123 | 3394 | |
6a33af40 | 3395 | /* We don't need the serialization anymore */ |
62b0cbb3 | 3396 | f = safe_fclose(f); |
a16e1123 | 3397 | |
6a33af40 LP |
3398 | /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */ |
3399 | (void) manager_setup_notify(m); | |
3400 | (void) manager_setup_cgroups_agent(m); | |
3401 | (void) manager_setup_user_lookup_fd(m); | |
00d9ef85 | 3402 | |
a16e1123 | 3403 | /* Third, fire things up! */ |
007c6337 | 3404 | manager_coldplug(m); |
a16e1123 | 3405 | |
5197be06 LP |
3406 | /* Clean up runtime objects no longer referenced */ |
3407 | manager_vacuum(m); | |
e8a565cb | 3408 | |
3deed59a AA |
3409 | /* Clean up deserialized tracked clients */ |
3410 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
3411 | ||
6a33af40 | 3412 | /* Consider the reload process complete now. */ |
31dc1ca3 LP |
3413 | assert(m->n_reloading > 0); |
3414 | m->n_reloading--; | |
3415 | ||
c6e892bc YW |
3416 | /* On manager reloading, device tag data should exists, thus, we should honor the results of device |
3417 | * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So, | |
3418 | * let's always set the flag here for safety. */ | |
3419 | m->honor_device_enumeration = true; | |
3420 | ||
5ce5e1ad | 3421 | manager_ready(m); |
8936a5e3 | 3422 | |
71445ae7 | 3423 | m->send_reloading_done = true; |
6a33af40 | 3424 | return 0; |
a16e1123 LP |
3425 | } |
3426 | ||
fdf20a31 | 3427 | void manager_reset_failed(Manager *m) { |
5632e374 | 3428 | Unit *u; |
5632e374 LP |
3429 | |
3430 | assert(m); | |
3431 | ||
90e74a66 | 3432 | HASHMAP_FOREACH(u, m->units) |
fdf20a31 | 3433 | unit_reset_failed(u); |
5632e374 LP |
3434 | } |
3435 | ||
31afa0a4 | 3436 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3437 | Unit *u; |
3438 | ||
3439 | assert(m); | |
3440 | assert(name); | |
3441 | ||
3442 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3443 | u = manager_get_unit(m, name); |
3444 | if (!u) | |
8f6df3fa LP |
3445 | return true; |
3446 | ||
31afa0a4 | 3447 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3448 | } |
3449 | ||
d8eb10d6 ZJS |
3450 | static void log_taint_string(Manager *m) { |
3451 | _cleanup_free_ char *taint = NULL; | |
3452 | ||
3453 | assert(m); | |
3454 | ||
3455 | if (MANAGER_IS_USER(m) || m->taint_logged) | |
3456 | return; | |
3457 | ||
3458 | m->taint_logged = true; /* only check for taint once */ | |
3459 | ||
3460 | taint = manager_taint_string(m); | |
3461 | if (isempty(taint)) | |
3462 | return; | |
3463 | ||
3464 | log_struct(LOG_NOTICE, | |
3465 | LOG_MESSAGE("System is tainted: %s", taint), | |
3466 | "TAINT=%s", taint, | |
a1230ff9 | 3467 | "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR); |
d8eb10d6 ZJS |
3468 | } |
3469 | ||
56dacdbc | 3470 | static void manager_notify_finished(Manager *m) { |
915b3753 | 3471 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3472 | |
638cece4 | 3473 | if (MANAGER_IS_TEST_RUN(m)) |
b0c918b9 LP |
3474 | return; |
3475 | ||
463d0d15 | 3476 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
dc3c9f5e ZJS |
3477 | char buf[FORMAT_TIMESPAN_MAX + STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX + STRLEN(" (loader) + ")] |
3478 | = {}; | |
3479 | char *p = buf; | |
3480 | size_t size = sizeof buf; | |
e03ae661 | 3481 | |
9f9f0342 LP |
3482 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3483 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3484 | * negative values. */ |
3485 | ||
9f9f0342 LP |
3486 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3487 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3488 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3489 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3490 | |
dd1db3c2 | 3491 | if (firmware_usec > 0) |
5291f26d | 3492 | size = strpcpyf(&p, size, "%s (firmware) + ", FORMAT_TIMESPAN(firmware_usec, USEC_PER_MSEC)); |
dd1db3c2 | 3493 | if (loader_usec > 0) |
5291f26d | 3494 | size = strpcpyf(&p, size, "%s (loader) + ", FORMAT_TIMESPAN(loader_usec, USEC_PER_MSEC)); |
dd1db3c2 | 3495 | |
9f9f0342 | 3496 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3497 | |
7802194a | 3498 | /* The initrd case on bare-metal */ |
9f9f0342 LP |
3499 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; |
3500 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3501 | |
e12919e8 | 3502 | log_struct(LOG_INFO, |
2b044526 | 3503 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3504 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3505 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3506 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
dd1db3c2 YW |
3507 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3508 | buf, | |
5291f26d ZJS |
3509 | FORMAT_TIMESPAN(kernel_usec, USEC_PER_MSEC), |
3510 | FORMAT_TIMESPAN(initrd_usec, USEC_PER_MSEC), | |
3511 | FORMAT_TIMESPAN(userspace_usec, USEC_PER_MSEC), | |
3512 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); | |
18fa6b27 | 3513 | } else { |
7802194a | 3514 | /* The initrd-less case on bare-metal */ |
9f9f0342 LP |
3515 | |
3516 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3517 | initrd_usec = 0; |
3518 | ||
81270860 | 3519 | log_struct(LOG_INFO, |
2b044526 | 3520 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3521 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3522 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
dd1db3c2 YW |
3523 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.", |
3524 | buf, | |
5291f26d ZJS |
3525 | FORMAT_TIMESPAN(kernel_usec, USEC_PER_MSEC), |
3526 | FORMAT_TIMESPAN(userspace_usec, USEC_PER_MSEC), | |
3527 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); | |
e12919e8 LP |
3528 | } |
3529 | } else { | |
4adf314b | 3530 | /* The container and --user case */ |
e12919e8 | 3531 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3532 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3533 | |
3534 | log_struct(LOG_INFO, | |
2b044526 | 3535 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3536 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca | 3537 | LOG_MESSAGE("Startup finished in %s.", |
5291f26d | 3538 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3539 | } |
b0c918b9 | 3540 | |
718db961 | 3541 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 | 3542 | |
d8eb10d6 | 3543 | log_taint_string(m); |
b0c918b9 LP |
3544 | } |
3545 | ||
6d932659 | 3546 | static void user_manager_send_ready(Manager *m) { |
4bf4f50f ZJS |
3547 | int r; |
3548 | ||
4adf314b LP |
3549 | assert(m); |
3550 | ||
3551 | /* We send READY=1 on reaching basic.target only when running in --user mode. */ | |
3552 | if (!MANAGER_IS_USER(m) || m->ready_sent) | |
3553 | return; | |
3554 | ||
d4341b76 ZJS |
3555 | r = sd_notify(false, |
3556 | "READY=1\n" | |
3557 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
4bf4f50f ZJS |
3558 | if (r < 0) |
3559 | log_warning_errno(r, "Failed to send readiness notification, ignoring: %m"); | |
3560 | ||
6d932659 ZJS |
3561 | m->ready_sent = true; |
3562 | m->status_ready = false; | |
3563 | } | |
3564 | ||
3565 | static void manager_send_ready(Manager *m) { | |
4bf4f50f ZJS |
3566 | int r; |
3567 | ||
6d932659 ZJS |
3568 | if (m->ready_sent && m->status_ready) |
3569 | /* Skip the notification if nothing changed. */ | |
3570 | return; | |
3571 | ||
028f7d3a ZJS |
3572 | r = sd_notify(false, |
3573 | "READY=1\n" | |
3574 | "STATUS=Ready."); | |
4bf4f50f ZJS |
3575 | if (r < 0) |
3576 | log_full_errno(m->ready_sent ? LOG_DEBUG : LOG_WARNING, r, | |
3577 | "Failed to send readiness notification, ignoring: %m"); | |
3578 | ||
6d932659 | 3579 | m->ready_sent = m->status_ready = true; |
4adf314b LP |
3580 | } |
3581 | ||
3582 | static void manager_check_basic_target(Manager *m) { | |
3583 | Unit *u; | |
3584 | ||
3585 | assert(m); | |
3586 | ||
3587 | /* Small shortcut */ | |
3588 | if (m->ready_sent && m->taint_logged) | |
3589 | return; | |
3590 | ||
3591 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3592 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3593 | return; | |
3594 | ||
3595 | /* For user managers, send out READY=1 as soon as we reach basic.target */ | |
6d932659 | 3596 | user_manager_send_ready(m); |
4adf314b LP |
3597 | |
3598 | /* Log the taint string as soon as we reach basic.target */ | |
3599 | log_taint_string(m); | |
3600 | } | |
3601 | ||
56dacdbc | 3602 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3603 | assert(m); |
3604 | ||
2c289ea8 | 3605 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3606 | return; |
3607 | ||
4259d202 LP |
3608 | /* Verify that we have entered the event loop already, and not left it again. */ |
3609 | if (!MANAGER_IS_RUNNING(m)) | |
9771b62d LP |
3610 | return; |
3611 | ||
4adf314b | 3612 | manager_check_basic_target(m); |
0c2826c6 | 3613 | |
56dacdbc | 3614 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3615 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3616 | /* Ignore any failure, this is only for feedback */ |
1b4154a8 ZJS |
3617 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, |
3618 | manager_watch_jobs_next_time(m)); | |
56dacdbc ZJS |
3619 | return; |
3620 | } | |
3621 | ||
a4ac27c1 ZJS |
3622 | /* The jobs hashmap tends to grow a lot during boot, and then it's not reused until shutdown. Let's |
3623 | kill the hashmap if it is relatively large. */ | |
3624 | if (hashmap_buckets(m->jobs) > hashmap_size(m->units) / 10) | |
3625 | m->jobs = hashmap_free(m->jobs); | |
3626 | ||
6d932659 ZJS |
3627 | manager_send_ready(m); |
3628 | ||
9c1b17c3 YW |
3629 | /* Notify Type=idle units that we are done now */ |
3630 | manager_close_idle_pipe(m); | |
3631 | ||
6d932659 ZJS |
3632 | if (MANAGER_IS_FINISHED(m)) |
3633 | return; | |
3634 | ||
7365a296 | 3635 | manager_flip_auto_status(m, false, "boot finished"); |
56dacdbc | 3636 | |
56dacdbc | 3637 | /* Turn off confirm spawn now */ |
7d5ceb64 | 3638 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
3639 | |
3640 | /* No need to update ask password status when we're going non-interactive */ | |
3641 | manager_close_ask_password(m); | |
3642 | ||
3643 | /* This is no longer the first boot */ | |
3644 | manager_set_first_boot(m, false); | |
3645 | ||
9f9f0342 | 3646 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
3647 | |
3648 | manager_notify_finished(m); | |
3649 | ||
e7ab4d1a | 3650 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3651 | } |
3652 | ||
64691d20 | 3653 | static bool generator_path_any(const char* const* paths) { |
64691d20 ZJS |
3654 | bool found = false; |
3655 | ||
3656 | /* Optimize by skipping the whole process by not creating output directories | |
3657 | * if no generators are found. */ | |
2034c8b8 | 3658 | STRV_FOREACH(path, paths) |
64691d20 ZJS |
3659 | if (access(*path, F_OK) == 0) |
3660 | found = true; | |
3661 | else if (errno != ENOENT) | |
3662 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
3663 | ||
3664 | return found; | |
3665 | } | |
3666 | ||
64691d20 ZJS |
3667 | static int manager_run_environment_generators(Manager *m) { |
3668 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
cccf5703 | 3669 | _cleanup_strv_free_ char **paths = NULL; |
1ad6e8b3 LP |
3670 | void* args[] = { |
3671 | [STDOUT_GENERATE] = &tmp, | |
3672 | [STDOUT_COLLECT] = &tmp, | |
3673 | [STDOUT_CONSUME] = &m->transient_environment, | |
3674 | }; | |
e3b8d063 | 3675 | int r; |
64691d20 | 3676 | |
638cece4 | 3677 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
e0a3da1f ZJS |
3678 | return 0; |
3679 | ||
cccf5703 BB |
3680 | paths = env_generator_binary_paths(MANAGER_IS_SYSTEM(m)); |
3681 | if (!paths) | |
3682 | return log_oom(); | |
64691d20 | 3683 | |
cccf5703 | 3684 | if (!generator_path_any((const char* const*) paths)) |
64691d20 ZJS |
3685 | return 0; |
3686 | ||
e3b8d063 | 3687 | RUN_WITH_UMASK(0022) |
cccf5703 | 3688 | r = execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, gather_environment, |
43f565c6 YW |
3689 | args, NULL, m->transient_environment, |
3690 | EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS | EXEC_DIR_SET_SYSTEMD_EXEC_PID); | |
e3b8d063 | 3691 | return r; |
64691d20 ZJS |
3692 | } |
3693 | ||
82c5db16 LP |
3694 | static int build_generator_environment(Manager *m, char ***ret) { |
3695 | _cleanup_strv_free_ char **nl = NULL; | |
3696 | Virtualization v; | |
3697 | int r; | |
3698 | ||
3699 | assert(m); | |
3700 | assert(ret); | |
3701 | ||
3702 | /* Generators oftentimes want to know some basic facts about the environment they run in, in order to | |
3703 | * adjust generated units to that. Let's pass down some bits of information that are easy for us to | |
3704 | * determine (but a bit harder for generator scripts to determine), as environment variables. */ | |
3705 | ||
3706 | nl = strv_copy(m->transient_environment); | |
3707 | if (!nl) | |
3708 | return -ENOMEM; | |
3709 | ||
3710 | r = strv_env_assign(&nl, "SYSTEMD_SCOPE", MANAGER_IS_SYSTEM(m) ? "system" : "user"); | |
3711 | if (r < 0) | |
3712 | return r; | |
3713 | ||
3714 | if (MANAGER_IS_SYSTEM(m)) { | |
3715 | /* Note that $SYSTEMD_IN_INITRD may be used to override the initrd detection in much of our | |
3716 | * codebase. This is hence more than purely informational. It will shortcut detection of the | |
3717 | * initrd state if generators invoke our own tools. But that's OK, as it would come to the | |
3718 | * same results (hopefully). */ | |
3719 | r = strv_env_assign(&nl, "SYSTEMD_IN_INITRD", one_zero(in_initrd())); | |
3720 | if (r < 0) | |
3721 | return r; | |
3722 | ||
3723 | if (m->first_boot >= 0) { | |
3724 | r = strv_env_assign(&nl, "SYSTEMD_FIRST_BOOT", one_zero(m->first_boot)); | |
3725 | if (r < 0) | |
3726 | return r; | |
3727 | } | |
3728 | } | |
3729 | ||
3730 | v = detect_virtualization(); | |
3731 | if (v < 0) | |
3732 | log_debug_errno(v, "Failed to detect virtualization, ignoring: %m"); | |
3733 | else if (v > 0) { | |
3734 | const char *s; | |
3735 | ||
3736 | s = strjoina(VIRTUALIZATION_IS_VM(v) ? "vm:" : | |
3737 | VIRTUALIZATION_IS_CONTAINER(v) ? "container:" : ":", | |
3738 | virtualization_to_string(v)); | |
3739 | ||
3740 | r = strv_env_assign(&nl, "SYSTEMD_VIRTUALIZATION", s); | |
3741 | if (r < 0) | |
3742 | return r; | |
3743 | } | |
3744 | ||
3745 | r = strv_env_assign(&nl, "SYSTEMD_ARCHITECTURE", architecture_to_string(uname_architecture())); | |
3746 | if (r < 0) | |
3747 | return r; | |
3748 | ||
3749 | *ret = TAKE_PTR(nl); | |
3750 | return 0; | |
3751 | } | |
3752 | ||
e801700e | 3753 | static int manager_run_generators(Manager *m) { |
82c5db16 | 3754 | _cleanup_strv_free_ char **paths = NULL, **ge = NULL; |
07719a21 | 3755 | int r; |
5a1e9937 LP |
3756 | |
3757 | assert(m); | |
3758 | ||
638cece4 | 3759 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
e0a3da1f ZJS |
3760 | return 0; |
3761 | ||
9183df70 | 3762 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3763 | if (!paths) |
3764 | return log_oom(); | |
5a1e9937 | 3765 | |
64691d20 ZJS |
3766 | if (!generator_path_any((const char* const*) paths)) |
3767 | return 0; | |
5a1e9937 | 3768 | |
cd64fd56 | 3769 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
7eb4f326 LP |
3770 | if (r < 0) { |
3771 | log_error_errno(r, "Failed to create generator directories: %m"); | |
07719a21 | 3772 | goto finish; |
7eb4f326 | 3773 | } |
5a1e9937 | 3774 | |
82c5db16 LP |
3775 | const char *argv[] = { |
3776 | NULL, /* Leave this empty, execute_directory() will fill something in */ | |
3777 | m->lookup_paths.generator, | |
3778 | m->lookup_paths.generator_early, | |
3779 | m->lookup_paths.generator_late, | |
3780 | NULL, | |
3781 | }; | |
3782 | ||
3783 | r = build_generator_environment(m, &ge); | |
3784 | if (r < 0) { | |
3785 | log_error_errno(r, "Failed to build generator environment: %m"); | |
3786 | goto finish; | |
3787 | } | |
5a1e9937 | 3788 | |
718db961 | 3789 | RUN_WITH_UMASK(0022) |
82c5db16 LP |
3790 | (void) execute_directories( |
3791 | (const char* const*) paths, | |
3792 | DEFAULT_TIMEOUT_USEC, | |
3793 | /* callbacks= */ NULL, /* callback_args= */ NULL, | |
3794 | (char**) argv, | |
3795 | ge, | |
3796 | EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS | EXEC_DIR_SET_SYSTEMD_EXEC_PID); | |
7eb4f326 LP |
3797 | |
3798 | r = 0; | |
5a1e9937 | 3799 | |
718db961 | 3800 | finish: |
cd64fd56 | 3801 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3802 | return r; |
5a1e9937 LP |
3803 | } |
3804 | ||
1ad6e8b3 LP |
3805 | int manager_transient_environment_add(Manager *m, char **plus) { |
3806 | char **a; | |
3807 | ||
3808 | assert(m); | |
3809 | ||
3810 | if (strv_isempty(plus)) | |
3811 | return 0; | |
3812 | ||
4ab3d29f | 3813 | a = strv_env_merge(m->transient_environment, plus); |
1ad6e8b3 | 3814 | if (!a) |
2fbbbf9a | 3815 | return log_oom(); |
1ad6e8b3 LP |
3816 | |
3817 | sanitize_environment(a); | |
3818 | ||
3819 | return strv_free_and_replace(m->transient_environment, a); | |
3820 | } | |
3821 | ||
3822 | int manager_client_environment_modify( | |
3823 | Manager *m, | |
3824 | char **minus, | |
3825 | char **plus) { | |
3826 | ||
718db961 | 3827 | char **a = NULL, **b = NULL, **l; |
1ad6e8b3 | 3828 | |
97d0e5f8 | 3829 | assert(m); |
bcd8e6d1 | 3830 | |
1ad6e8b3 LP |
3831 | if (strv_isempty(minus) && strv_isempty(plus)) |
3832 | return 0; | |
3833 | ||
3834 | l = m->client_environment; | |
bcd8e6d1 | 3835 | |
718db961 LP |
3836 | if (!strv_isempty(minus)) { |
3837 | a = strv_env_delete(l, 1, minus); | |
3838 | if (!a) | |
3839 | return -ENOMEM; | |
3840 | ||
3841 | l = a; | |
3842 | } | |
3843 | ||
3844 | if (!strv_isempty(plus)) { | |
4ab3d29f | 3845 | b = strv_env_merge(l, plus); |
aa9f8a30 AH |
3846 | if (!b) { |
3847 | strv_free(a); | |
718db961 | 3848 | return -ENOMEM; |
aa9f8a30 | 3849 | } |
bcd8e6d1 | 3850 | |
718db961 LP |
3851 | l = b; |
3852 | } | |
3853 | ||
1ad6e8b3 LP |
3854 | if (m->client_environment != l) |
3855 | strv_free(m->client_environment); | |
3856 | ||
718db961 LP |
3857 | if (a != l) |
3858 | strv_free(a); | |
3859 | if (b != l) | |
3860 | strv_free(b); | |
3861 | ||
1ad6e8b3 LP |
3862 | m->client_environment = sanitize_environment(l); |
3863 | return 0; | |
3864 | } | |
3865 | ||
3866 | int manager_get_effective_environment(Manager *m, char ***ret) { | |
3867 | char **l; | |
3868 | ||
3869 | assert(m); | |
3870 | assert(ret); | |
3871 | ||
4ab3d29f | 3872 | l = strv_env_merge(m->transient_environment, m->client_environment); |
1ad6e8b3 LP |
3873 | if (!l) |
3874 | return -ENOMEM; | |
f069efb4 | 3875 | |
1ad6e8b3 | 3876 | *ret = l; |
97d0e5f8 UTL |
3877 | return 0; |
3878 | } | |
3879 | ||
c93ff2e9 | 3880 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
c93ff2e9 FC |
3881 | assert(m); |
3882 | ||
5b10116e | 3883 | for (unsigned i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3884 | m->rlimit[i] = mfree(m->rlimit[i]); |
3885 | ||
07719a21 LP |
3886 | if (!default_rlimit[i]) |
3887 | continue; | |
c93ff2e9 | 3888 | |
07719a21 LP |
3889 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3890 | if (!m->rlimit[i]) | |
3ce40911 | 3891 | return log_oom(); |
c93ff2e9 FC |
3892 | } |
3893 | ||
3894 | return 0; | |
3895 | } | |
3896 | ||
8559b3b7 LP |
3897 | void manager_recheck_dbus(Manager *m) { |
3898 | assert(m); | |
3899 | ||
3900 | /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all | |
3901 | * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the | |
3902 | * connection of the API bus). That's because the system bus after all runs as service of the system instance, | |
3903 | * while in the user instance we can assume it's already there. */ | |
3904 | ||
31dc1ca3 LP |
3905 | if (MANAGER_IS_RELOADING(m)) |
3906 | return; /* don't check while we are reloading… */ | |
3907 | ||
8559b3b7 LP |
3908 | if (manager_dbus_is_running(m, false)) { |
3909 | (void) bus_init_api(m); | |
3910 | ||
3911 | if (MANAGER_IS_SYSTEM(m)) | |
3912 | (void) bus_init_system(m); | |
3913 | } else { | |
3914 | (void) bus_done_api(m); | |
3915 | ||
3916 | if (MANAGER_IS_SYSTEM(m)) | |
3917 | (void) bus_done_system(m); | |
3918 | } | |
3919 | } | |
3920 | ||
d075092f | 3921 | static bool manager_journal_is_running(Manager *m) { |
f1dd0c3f LP |
3922 | Unit *u; |
3923 | ||
3924 | assert(m); | |
3925 | ||
638cece4 | 3926 | if (MANAGER_IS_TEST_RUN(m)) |
7d814a19 LP |
3927 | return false; |
3928 | ||
d075092f | 3929 | /* If we are the user manager we can safely assume that the journal is up */ |
463d0d15 | 3930 | if (!MANAGER_IS_SYSTEM(m)) |
d075092f | 3931 | return true; |
f1dd0c3f | 3932 | |
d075092f | 3933 | /* Check that the socket is not only up, but in RUNNING state */ |
731a676c | 3934 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
d075092f LP |
3935 | if (!u) |
3936 | return false; | |
3937 | if (SOCKET(u)->state != SOCKET_RUNNING) | |
3938 | return false; | |
f1dd0c3f | 3939 | |
d075092f | 3940 | /* Similar, check if the daemon itself is fully up, too */ |
731a676c | 3941 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
d075092f LP |
3942 | if (!u) |
3943 | return false; | |
217677ab | 3944 | if (!IN_SET(SERVICE(u)->state, SERVICE_RELOAD, SERVICE_RUNNING)) |
d075092f LP |
3945 | return false; |
3946 | ||
3947 | return true; | |
3948 | } | |
3949 | ||
6123dfaa ZJS |
3950 | void disable_printk_ratelimit(void) { |
3951 | /* Disable kernel's printk ratelimit. | |
3952 | * | |
3953 | * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging | |
3954 | * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line | |
3955 | * setting takes precedence. */ | |
3956 | int r; | |
3957 | ||
3958 | r = sysctl_write("kernel/printk_devkmsg", "on"); | |
3959 | if (r < 0) | |
3960 | log_debug_errno(r, "Failed to set sysctl kernel.printk_devkmsg=on: %m"); | |
3961 | } | |
3962 | ||
d075092f LP |
3963 | void manager_recheck_journal(Manager *m) { |
3964 | ||
3965 | assert(m); | |
3966 | ||
3967 | /* Don't bother with this unless we are in the special situation of being PID 1 */ | |
3968 | if (getpid_cached() != 1) | |
731a676c | 3969 | return; |
f1dd0c3f | 3970 | |
31dc1ca3 LP |
3971 | /* Don't check this while we are reloading, things might still change */ |
3972 | if (MANAGER_IS_RELOADING(m)) | |
3973 | return; | |
3974 | ||
cedf5088 LP |
3975 | /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the |
3976 | * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger | |
3977 | * an activation ourselves we can't fulfill. */ | |
3978 | log_set_prohibit_ipc(!manager_journal_is_running(m)); | |
cc2b9e6b | 3979 | log_open(); |
f1dd0c3f LP |
3980 | } |
3981 | ||
44a41954 FB |
3982 | static ShowStatus manager_get_show_status(Manager *m) { |
3983 | assert(m); | |
3984 | ||
3985 | if (MANAGER_IS_USER(m)) | |
3986 | return _SHOW_STATUS_INVALID; | |
3987 | ||
3988 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) | |
3989 | return m->show_status_overridden; | |
3990 | ||
3991 | return m->show_status; | |
3992 | } | |
3993 | ||
3994 | bool manager_get_show_status_on(Manager *m) { | |
3995 | assert(m); | |
3996 | ||
3997 | return show_status_on(manager_get_show_status(m)); | |
3998 | } | |
b309078a | 3999 | |
3ceb3471 FB |
4000 | static void set_show_status_marker(bool b) { |
4001 | if (b) | |
4002 | (void) touch("/run/systemd/show-status"); | |
4003 | else | |
4004 | (void) unlink("/run/systemd/show-status"); | |
4005 | } | |
4006 | ||
44a41954 | 4007 | void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) { |
27d340c7 | 4008 | assert(m); |
44a41954 | 4009 | assert(reason); |
0d066dd1 | 4010 | assert(mode >= 0 && mode < _SHOW_STATUS_MAX); |
27d340c7 | 4011 | |
44a41954 | 4012 | if (MANAGER_IS_USER(m)) |
27d340c7 LP |
4013 | return; |
4014 | ||
ef15d3e1 ZJS |
4015 | if (mode == m->show_status) |
4016 | return; | |
4017 | ||
44a41954 FB |
4018 | if (m->show_status_overridden == _SHOW_STATUS_INVALID) { |
4019 | bool enabled; | |
4020 | ||
4021 | enabled = show_status_on(mode); | |
4022 | log_debug("%s (%s) showing of status (%s).", | |
4023 | enabled ? "Enabling" : "Disabling", | |
4024 | strna(show_status_to_string(mode)), | |
4025 | reason); | |
4026 | ||
3ceb3471 | 4027 | set_show_status_marker(enabled); |
44a41954 FB |
4028 | } |
4029 | ||
4030 | m->show_status = mode; | |
4031 | } | |
4032 | ||
43bba15a | 4033 | void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason) { |
44a41954 FB |
4034 | assert(m); |
4035 | assert(mode < _SHOW_STATUS_MAX); | |
4036 | ||
4037 | if (MANAGER_IS_USER(m)) | |
4038 | return; | |
4039 | ||
4040 | if (mode == m->show_status_overridden) | |
4041 | return; | |
4042 | ||
4043 | m->show_status_overridden = mode; | |
4044 | ||
4045 | if (mode == _SHOW_STATUS_INVALID) | |
4046 | mode = m->show_status; | |
4047 | ||
ef15d3e1 | 4048 | log_debug("%s (%s) showing of status (%s).", |
44a41954 | 4049 | m->show_status_overridden != _SHOW_STATUS_INVALID ? "Overriding" : "Restoring", |
ef15d3e1 ZJS |
4050 | strna(show_status_to_string(mode)), |
4051 | reason); | |
b309078a | 4052 | |
3ceb3471 | 4053 | set_show_status_marker(show_status_on(mode)); |
27d340c7 LP |
4054 | } |
4055 | ||
7d5ceb64 FB |
4056 | const char *manager_get_confirm_spawn(Manager *m) { |
4057 | static int last_errno = 0; | |
7d5ceb64 FB |
4058 | struct stat st; |
4059 | int r; | |
4060 | ||
ea758432 LP |
4061 | assert(m); |
4062 | ||
7d5ceb64 FB |
4063 | /* Here's the deal: we want to test the validity of the console but don't want |
4064 | * PID1 to go through the whole console process which might block. But we also | |
4065 | * want to warn the user only once if something is wrong with the console so we | |
4066 | * cannot do the sanity checks after spawning our children. So here we simply do | |
4067 | * really basic tests to hopefully trap common errors. | |
4068 | * | |
4069 | * If the console suddenly disappear at the time our children will really it | |
4070 | * then they will simply fail to acquire it and a positive answer will be | |
2aed63f4 | 4071 | * assumed. New children will fall back to /dev/console though. |
7d5ceb64 FB |
4072 | * |
4073 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
4074 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
2aed63f4 | 4075 | * reason the configured console is not ready, we fall back to the default |
7d5ceb64 FB |
4076 | * console. */ |
4077 | ||
ea758432 LP |
4078 | if (!m->confirm_spawn || path_equal(m->confirm_spawn, "/dev/console")) |
4079 | return m->confirm_spawn; | |
7d5ceb64 | 4080 | |
ea758432 LP |
4081 | if (stat(m->confirm_spawn, &st) < 0) { |
4082 | r = -errno; | |
7d5ceb64 | 4083 | goto fail; |
ea758432 | 4084 | } |
7d5ceb64 FB |
4085 | |
4086 | if (!S_ISCHR(st.st_mode)) { | |
ea758432 | 4087 | r = -ENOTTY; |
7d5ceb64 FB |
4088 | goto fail; |
4089 | } | |
4090 | ||
4091 | last_errno = 0; | |
ea758432 LP |
4092 | return m->confirm_spawn; |
4093 | ||
7d5ceb64 | 4094 | fail: |
ea758432 LP |
4095 | if (last_errno != r) |
4096 | last_errno = log_warning_errno(r, "Failed to open %s, using default console: %m", m->confirm_spawn); | |
4097 | ||
7d5ceb64 FB |
4098 | return "/dev/console"; |
4099 | } | |
4100 | ||
e2680723 LP |
4101 | void manager_set_first_boot(Manager *m, bool b) { |
4102 | assert(m); | |
4103 | ||
463d0d15 | 4104 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
4105 | return; |
4106 | ||
ae2a2c53 LP |
4107 | if (m->first_boot != (int) b) { |
4108 | if (b) | |
4109 | (void) touch("/run/systemd/first-boot"); | |
4110 | else | |
4111 | (void) unlink("/run/systemd/first-boot"); | |
4112 | } | |
e2680723 | 4113 | |
ae2a2c53 | 4114 | m->first_boot = b; |
e2680723 LP |
4115 | } |
4116 | ||
b0eb2944 FB |
4117 | void manager_disable_confirm_spawn(void) { |
4118 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
4119 | } | |
4120 | ||
4121 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
4122 | if (!m->confirm_spawn) | |
4123 | return true; | |
4124 | ||
4125 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
4126 | } | |
4127 | ||
0d6d3cf0 FB |
4128 | static bool manager_should_show_status(Manager *m, StatusType type) { |
4129 | assert(m); | |
4130 | ||
4131 | if (!MANAGER_IS_SYSTEM(m)) | |
4132 | return false; | |
4133 | ||
4134 | if (m->no_console_output) | |
4135 | return false; | |
4136 | ||
4137 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) | |
4138 | return false; | |
4139 | ||
4140 | /* If we cannot find out the status properly, just proceed. */ | |
4141 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) | |
4142 | return false; | |
4143 | ||
4144 | if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO) | |
4145 | return true; | |
4146 | ||
44a41954 | 4147 | return manager_get_show_status_on(m); |
0d6d3cf0 FB |
4148 | } |
4149 | ||
127d5fd1 | 4150 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
4151 | va_list ap; |
4152 | ||
cb6531be ZJS |
4153 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
4154 | ||
0d6d3cf0 | 4155 | if (m && !manager_should_show_status(m, type)) |
25cee550 MS |
4156 | return; |
4157 | ||
03b717a3 MS |
4158 | /* XXX We should totally drop the check for ephemeral here |
4159 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 4160 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
4161 | return; |
4162 | ||
25cee550 | 4163 | va_start(ap, format); |
a885727a | 4164 | status_vprintf(status, SHOW_STATUS_ELLIPSIZE|(type == STATUS_TYPE_EPHEMERAL ? SHOW_STATUS_EPHEMERAL : 0), format, ap); |
25cee550 MS |
4165 | va_end(ap); |
4166 | } | |
4167 | ||
ac19bdd0 | 4168 | Set* manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
a57f7e2c LP |
4169 | assert(m); |
4170 | assert(path); | |
4171 | ||
ac19bdd0 ZJS |
4172 | if (path_equal(path, "/")) |
4173 | path = ""; | |
a57f7e2c | 4174 | |
ac19bdd0 | 4175 | return hashmap_get(m->units_requiring_mounts_for, path); |
a57f7e2c | 4176 | } |
e66cf1a3 | 4177 | |
5269eb6b | 4178 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 4179 | unsigned size; |
5269eb6b | 4180 | int r; |
03455c28 LDM |
4181 | |
4182 | assert(m); | |
4183 | assert(u->manager == m); | |
4184 | ||
4185 | size = set_size(m->failed_units); | |
4186 | ||
9fff8981 | 4187 | if (failed) { |
de7fef4b | 4188 | r = set_ensure_put(&m->failed_units, NULL, u); |
5269eb6b LP |
4189 | if (r < 0) |
4190 | return log_oom(); | |
9fff8981 | 4191 | } else |
5269eb6b | 4192 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
4193 | |
4194 | if (set_size(m->failed_units) != size) | |
4195 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
4196 | |
4197 | return 0; | |
03455c28 LDM |
4198 | } |
4199 | ||
f755e3b7 LP |
4200 | ManagerState manager_state(Manager *m) { |
4201 | Unit *u; | |
4202 | ||
4203 | assert(m); | |
4204 | ||
f9d29f6d JB |
4205 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
4206 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
4207 | if (u && unit_active_or_pending(u)) | |
4208 | return MANAGER_STOPPING; | |
4209 | ||
f755e3b7 | 4210 | /* Did we ever finish booting? If not then we are still starting up */ |
49d5666c | 4211 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
4212 | |
4213 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
4214 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
4215 | return MANAGER_INITIALIZING; | |
4216 | ||
f755e3b7 | 4217 | return MANAGER_STARTING; |
d81afec1 | 4218 | } |
f755e3b7 | 4219 | |
45a7b16b LP |
4220 | if (MANAGER_IS_SYSTEM(m)) { |
4221 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
4222 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
4223 | if (u && unit_active_or_pending(u)) | |
4224 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 4225 | |
45a7b16b LP |
4226 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
4227 | if (u && unit_active_or_pending(u)) | |
4228 | return MANAGER_MAINTENANCE; | |
4229 | } | |
f755e3b7 LP |
4230 | |
4231 | /* Are there any failed units? If so, we are in degraded mode */ | |
4232 | if (set_size(m->failed_units) > 0) | |
4233 | return MANAGER_DEGRADED; | |
4234 | ||
4235 | return MANAGER_RUNNING; | |
4236 | } | |
4237 | ||
00d9ef85 | 4238 | static void manager_unref_uid_internal( |
010becd9 | 4239 | Hashmap *uid_refs, |
00d9ef85 LP |
4240 | uid_t uid, |
4241 | bool destroy_now, | |
4242 | int (*_clean_ipc)(uid_t uid)) { | |
4243 | ||
4244 | uint32_t c, n; | |
4245 | ||
00d9ef85 LP |
4246 | assert(uid_is_valid(uid)); |
4247 | assert(_clean_ipc); | |
4248 | ||
4249 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
4250 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
4251 | * | |
827d1ba7 | 4252 | * We store a hashmap where the key is the UID/GID and the value is a 32bit reference counter, whose highest |
00d9ef85 LP |
4253 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID |
4254 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
4255 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
4256 | ||
4257 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4258 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4259 | ||
4260 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4261 | return; | |
4262 | ||
010becd9 | 4263 | c = PTR_TO_UINT32(hashmap_get(uid_refs, UID_TO_PTR(uid))); |
00d9ef85 LP |
4264 | |
4265 | n = c & ~DESTROY_IPC_FLAG; | |
4266 | assert(n > 0); | |
4267 | n--; | |
4268 | ||
4269 | if (destroy_now && n == 0) { | |
010becd9 | 4270 | hashmap_remove(uid_refs, UID_TO_PTR(uid)); |
00d9ef85 LP |
4271 | |
4272 | if (c & DESTROY_IPC_FLAG) { | |
4273 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
4274 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4275 | uid); | |
4276 | (void) _clean_ipc(uid); | |
4277 | } | |
4278 | } else { | |
4279 | c = n | (c & DESTROY_IPC_FLAG); | |
010becd9 | 4280 | assert_se(hashmap_update(uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); |
00d9ef85 LP |
4281 | } |
4282 | } | |
4283 | ||
4284 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
010becd9 | 4285 | manager_unref_uid_internal(m->uid_refs, uid, destroy_now, clean_ipc_by_uid); |
00d9ef85 LP |
4286 | } |
4287 | ||
4288 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
010becd9 | 4289 | manager_unref_uid_internal(m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); |
00d9ef85 LP |
4290 | } |
4291 | ||
4292 | static int manager_ref_uid_internal( | |
00d9ef85 LP |
4293 | Hashmap **uid_refs, |
4294 | uid_t uid, | |
4295 | bool clean_ipc) { | |
4296 | ||
4297 | uint32_t c, n; | |
4298 | int r; | |
4299 | ||
00d9ef85 LP |
4300 | assert(uid_refs); |
4301 | assert(uid_is_valid(uid)); | |
4302 | ||
4303 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
4304 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
4305 | ||
4306 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4307 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4308 | ||
4309 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4310 | return 0; | |
4311 | ||
4312 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
4313 | if (r < 0) | |
4314 | return r; | |
4315 | ||
4316 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4317 | ||
4318 | n = c & ~DESTROY_IPC_FLAG; | |
4319 | n++; | |
4320 | ||
4321 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
4322 | return -EOVERFLOW; | |
4323 | ||
4324 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
4325 | ||
4326 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
4327 | } | |
4328 | ||
4329 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
010becd9 | 4330 | return manager_ref_uid_internal(&m->uid_refs, uid, clean_ipc); |
00d9ef85 LP |
4331 | } |
4332 | ||
4333 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
010becd9 | 4334 | return manager_ref_uid_internal(&m->gid_refs, (uid_t) gid, clean_ipc); |
00d9ef85 LP |
4335 | } |
4336 | ||
4337 | static void manager_vacuum_uid_refs_internal( | |
010becd9 | 4338 | Hashmap *uid_refs, |
00d9ef85 LP |
4339 | int (*_clean_ipc)(uid_t uid)) { |
4340 | ||
00d9ef85 LP |
4341 | void *p, *k; |
4342 | ||
00d9ef85 LP |
4343 | assert(_clean_ipc); |
4344 | ||
010becd9 | 4345 | HASHMAP_FOREACH_KEY(p, k, uid_refs) { |
00d9ef85 LP |
4346 | uint32_t c, n; |
4347 | uid_t uid; | |
4348 | ||
4349 | uid = PTR_TO_UID(k); | |
4350 | c = PTR_TO_UINT32(p); | |
4351 | ||
4352 | n = c & ~DESTROY_IPC_FLAG; | |
4353 | if (n > 0) | |
4354 | continue; | |
4355 | ||
4356 | if (c & DESTROY_IPC_FLAG) { | |
4357 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
4358 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4359 | uid); | |
4360 | (void) _clean_ipc(uid); | |
4361 | } | |
4362 | ||
010becd9 | 4363 | assert_se(hashmap_remove(uid_refs, k) == p); |
00d9ef85 LP |
4364 | } |
4365 | } | |
4366 | ||
06a4eb07 | 4367 | static void manager_vacuum_uid_refs(Manager *m) { |
010becd9 | 4368 | manager_vacuum_uid_refs_internal(m->uid_refs, clean_ipc_by_uid); |
00d9ef85 LP |
4369 | } |
4370 | ||
06a4eb07 | 4371 | static void manager_vacuum_gid_refs(Manager *m) { |
010becd9 | 4372 | manager_vacuum_uid_refs_internal(m->gid_refs, clean_ipc_by_gid); |
00d9ef85 LP |
4373 | } |
4374 | ||
06a4eb07 FB |
4375 | static void manager_vacuum(Manager *m) { |
4376 | assert(m); | |
4377 | ||
4378 | /* Release any dynamic users no longer referenced */ | |
4379 | dynamic_user_vacuum(m, true); | |
4380 | ||
4381 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ | |
4382 | manager_vacuum_uid_refs(m); | |
4383 | manager_vacuum_gid_refs(m); | |
4384 | ||
4385 | /* Release any runtimes no longer referenced */ | |
4386 | exec_runtime_vacuum(m); | |
4387 | } | |
4388 | ||
00d9ef85 LP |
4389 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
4390 | struct buffer { | |
4391 | uid_t uid; | |
4392 | gid_t gid; | |
4393 | char unit_name[UNIT_NAME_MAX+1]; | |
4394 | } _packed_ buffer; | |
4395 | ||
4396 | Manager *m = userdata; | |
4397 | ssize_t l; | |
4398 | size_t n; | |
4399 | Unit *u; | |
4400 | ||
4401 | assert_se(source); | |
4402 | assert_se(m); | |
4403 | ||
4404 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
4405 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
4406 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
4407 | ||
4408 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
4409 | if (l < 0) { | |
8add30a0 | 4410 | if (ERRNO_IS_TRANSIENT(errno)) |
00d9ef85 LP |
4411 | return 0; |
4412 | ||
4413 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
4414 | } | |
4415 | ||
4416 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
4417 | log_warning("Received too short user lookup message, ignoring."); | |
4418 | return 0; | |
4419 | } | |
4420 | ||
4421 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
4422 | log_warning("Received too long user lookup message, ignoring."); | |
4423 | return 0; | |
4424 | } | |
4425 | ||
4426 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
4427 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
4428 | return 0; | |
4429 | } | |
4430 | ||
4431 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
4432 | if (memchr(buffer.unit_name, 0, n)) { | |
4433 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
4434 | return 0; | |
4435 | } | |
4436 | ||
4437 | buffer.unit_name[n] = 0; | |
4438 | u = manager_get_unit(m, buffer.unit_name); | |
4439 | if (!u) { | |
4440 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
4441 | return 0; | |
4442 | } | |
4443 | ||
4444 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
4445 | ||
4446 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
4447 | return 0; | |
4448 | } | |
4449 | ||
63e8df04 LP |
4450 | static int short_uid_range(const char *path) { |
4451 | _cleanup_free_ UidRange *p = NULL; | |
4452 | size_t n = 0; | |
4453 | int r; | |
4454 | ||
4455 | assert(path); | |
4456 | ||
4457 | /* Taint systemd if we the UID range assigned to this environment doesn't at least cover 0…65534, | |
4458 | * i.e. from root to nobody. */ | |
4459 | ||
4460 | r = uid_range_load_userns(&p, &n, path); | |
4461 | if (ERRNO_IS_NOT_SUPPORTED(r)) | |
4462 | return false; | |
4463 | if (r < 0) | |
4464 | return log_debug_errno(r, "Failed to load %s: %m", path); | |
4465 | ||
4466 | return !uid_range_covers(p, n, 0, 65535); | |
4467 | } | |
4468 | ||
83fe5d8a ZJS |
4469 | char* manager_taint_string(const Manager *m) { |
4470 | /* Returns a "taint string", e.g. "local-hwclock:var-run-bad". Only things that are detected at | |
4471 | * runtime should be tagged here. For stuff that is known during compilation, emit a warning in the | |
63e8df04 | 4472 | * configuration phase. */ |
198ce932 | 4473 | |
af6b0ecc LP |
4474 | assert(m); |
4475 | ||
31cd2dd9 | 4476 | const char* stage[12] = {}; |
83fe5d8a | 4477 | size_t n = 0; |
af6b0ecc LP |
4478 | |
4479 | if (m->taint_usr) | |
83fe5d8a | 4480 | stage[n++] = "split-usr"; |
af6b0ecc | 4481 | |
31cd2dd9 LB |
4482 | _cleanup_free_ char *usrbin = NULL; |
4483 | if (readlink_malloc("/bin", &usrbin) < 0 || !PATH_IN_SET(usrbin, "usr/bin", "/usr/bin")) | |
4484 | stage[n++] = "unmerged-usr"; | |
4485 | ||
af6b0ecc | 4486 | if (access("/proc/cgroups", F_OK) < 0) |
83fe5d8a | 4487 | stage[n++] = "cgroups-missing"; |
af6b0ecc | 4488 | |
82f30632 | 4489 | if (cg_all_unified() == 0) |
83fe5d8a | 4490 | stage[n++] = "cgroupsv1"; |
82f30632 | 4491 | |
af6b0ecc | 4492 | if (clock_is_localtime(NULL) > 0) |
83fe5d8a | 4493 | stage[n++] = "local-hwclock"; |
af6b0ecc | 4494 | |
83fe5d8a ZJS |
4495 | _cleanup_free_ char *destination = NULL; |
4496 | if (readlink_malloc("/var/run", &destination) < 0 || | |
4497 | !PATH_IN_SET(destination, "../run", "/run")) | |
4498 | stage[n++] = "var-run-bad"; | |
af6b0ecc | 4499 | |
83fe5d8a ZJS |
4500 | _cleanup_free_ char *overflowuid = NULL, *overflowgid = NULL; |
4501 | if (read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid) >= 0 && | |
4502 | !streq(overflowuid, "65534")) | |
4503 | stage[n++] = "overflowuid-not-65534"; | |
4504 | if (read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid) >= 0 && | |
4505 | !streq(overflowgid, "65534")) | |
4506 | stage[n++] = "overflowgid-not-65534"; | |
90d7464d | 4507 | |
83fe5d8a | 4508 | struct utsname uts; |
40efaaed LP |
4509 | assert_se(uname(&uts) >= 0); |
4510 | if (strverscmp_improved(uts.release, KERNEL_BASELINE_VERSION) < 0) | |
83fe5d8a | 4511 | stage[n++] = "old-kernel"; |
40efaaed | 4512 | |
63e8df04 | 4513 | if (short_uid_range("/proc/self/uid_map") > 0) |
83fe5d8a | 4514 | stage[n++] = "short-uid-range"; |
63e8df04 | 4515 | if (short_uid_range("/proc/self/gid_map") > 0) |
83fe5d8a | 4516 | stage[n++] = "short-gid-range"; |
63e8df04 | 4517 | |
83fe5d8a | 4518 | assert(n < ELEMENTSOF(stage) - 1); /* One extra for NULL terminator */ |
af6b0ecc | 4519 | |
83fe5d8a | 4520 | return strv_join((char**) stage, ":"); |
af6b0ecc LP |
4521 | } |
4522 | ||
adefcf28 LP |
4523 | void manager_ref_console(Manager *m) { |
4524 | assert(m); | |
4525 | ||
4526 | m->n_on_console++; | |
4527 | } | |
4528 | ||
4529 | void manager_unref_console(Manager *m) { | |
4530 | ||
4531 | assert(m->n_on_console > 0); | |
4532 | m->n_on_console--; | |
4533 | ||
4534 | if (m->n_on_console == 0) | |
4535 | m->no_console_output = false; /* unset no_console_output flag, since the console is definitely free now */ | |
4536 | } | |
4537 | ||
a6ecbf83 FB |
4538 | void manager_override_log_level(Manager *m, int level) { |
4539 | _cleanup_free_ char *s = NULL; | |
4540 | assert(m); | |
4541 | ||
4542 | if (!m->log_level_overridden) { | |
4543 | m->original_log_level = log_get_max_level(); | |
4544 | m->log_level_overridden = true; | |
4545 | } | |
4546 | ||
4547 | (void) log_level_to_string_alloc(level, &s); | |
4548 | log_info("Setting log level to %s.", strna(s)); | |
4549 | ||
4550 | log_set_max_level(level); | |
4551 | } | |
4552 | ||
4553 | void manager_restore_original_log_level(Manager *m) { | |
4554 | _cleanup_free_ char *s = NULL; | |
4555 | assert(m); | |
4556 | ||
4557 | if (!m->log_level_overridden) | |
4558 | return; | |
4559 | ||
4560 | (void) log_level_to_string_alloc(m->original_log_level, &s); | |
4561 | log_info("Restoring log level to original (%s).", strna(s)); | |
4562 | ||
4563 | log_set_max_level(m->original_log_level); | |
4564 | m->log_level_overridden = false; | |
4565 | } | |
4566 | ||
bda7d78b FB |
4567 | void manager_override_log_target(Manager *m, LogTarget target) { |
4568 | assert(m); | |
4569 | ||
4570 | if (!m->log_target_overridden) { | |
4571 | m->original_log_target = log_get_target(); | |
4572 | m->log_target_overridden = true; | |
4573 | } | |
4574 | ||
4575 | log_info("Setting log target to %s.", log_target_to_string(target)); | |
4576 | log_set_target(target); | |
4577 | } | |
4578 | ||
4579 | void manager_restore_original_log_target(Manager *m) { | |
4580 | assert(m); | |
4581 | ||
4582 | if (!m->log_target_overridden) | |
4583 | return; | |
4584 | ||
4585 | log_info("Restoring log target to original %s.", log_target_to_string(m->original_log_target)); | |
4586 | ||
4587 | log_set_target(m->original_log_target); | |
4588 | m->log_target_overridden = false; | |
4589 | } | |
4590 | ||
d4ee7bd8 YW |
4591 | ManagerTimestamp manager_timestamp_initrd_mangle(ManagerTimestamp s) { |
4592 | if (in_initrd() && | |
4593 | s >= MANAGER_TIMESTAMP_SECURITY_START && | |
4594 | s <= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH) | |
4595 | return s - MANAGER_TIMESTAMP_SECURITY_START + MANAGER_TIMESTAMP_INITRD_SECURITY_START; | |
4596 | return s; | |
4597 | } | |
4598 | ||
f755e3b7 | 4599 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 4600 | [MANAGER_INITIALIZING] = "initializing", |
48d83e33 ZJS |
4601 | [MANAGER_STARTING] = "starting", |
4602 | [MANAGER_RUNNING] = "running", | |
4603 | [MANAGER_DEGRADED] = "degraded", | |
4604 | [MANAGER_MAINTENANCE] = "maintenance", | |
4605 | [MANAGER_STOPPING] = "stopping", | |
f755e3b7 LP |
4606 | }; |
4607 | ||
4608 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
4609 | |
4610 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
48d83e33 ZJS |
4611 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", |
4612 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
4613 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
4614 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
4615 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
4616 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
4617 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
4618 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
4619 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
4620 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
4621 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
4622 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
49fbe940 | 4623 | [MANAGER_TIMESTAMP_UNITS_LOAD] = "units-load", |
48d83e33 ZJS |
4624 | [MANAGER_TIMESTAMP_INITRD_SECURITY_START] = "initrd-security-start", |
4625 | [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH] = "initrd-security-finish", | |
4626 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_START] = "initrd-generators-start", | |
d4ee7bd8 | 4627 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH] = "initrd-generators-finish", |
48d83e33 | 4628 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START] = "initrd-units-load-start", |
d4ee7bd8 | 4629 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH] = "initrd-units-load-finish", |
9f9f0342 LP |
4630 | }; |
4631 | ||
4632 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); | |
afcfaa69 LP |
4633 | |
4634 | static const char* const oom_policy_table[_OOM_POLICY_MAX] = { | |
4635 | [OOM_CONTINUE] = "continue", | |
48d83e33 ZJS |
4636 | [OOM_STOP] = "stop", |
4637 | [OOM_KILL] = "kill", | |
afcfaa69 LP |
4638 | }; |
4639 | ||
4640 | DEFINE_STRING_TABLE_LOOKUP(oom_policy, OOMPolicy); |