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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> |
ca6ce62d | 9 | #include <sys/mount.h> |
400f1a33 | 10 | #include <sys/reboot.h> |
8742514c | 11 | #include <sys/timerfd.h> |
40efaaed | 12 | #include <sys/utsname.h> |
400f1a33 LP |
13 | #include <sys/wait.h> |
14 | #include <unistd.h> | |
830f6caa | 15 | |
349cc4a5 | 16 | #if HAVE_AUDIT |
4927fcae | 17 | #include <libaudit.h> |
830f6caa | 18 | #endif |
60918275 | 19 | |
718db961 | 20 | #include "sd-daemon.h" |
718db961 | 21 | #include "sd-messages.h" |
3536f49e | 22 | #include "sd-path.h" |
81527be1 | 23 | |
57b7a260 | 24 | #include "all-units.h" |
d68c645b | 25 | #include "alloc-util.h" |
400f1a33 LP |
26 | #include "audit-fd.h" |
27 | #include "boot-timestamps.h" | |
28 | #include "bus-common-errors.h" | |
29 | #include "bus-error.h" | |
30 | #include "bus-kernel.h" | |
31 | #include "bus-util.h" | |
00d9ef85 | 32 | #include "clean-ipc.h" |
af6b0ecc | 33 | #include "clock-util.h" |
29e6b0c1 | 34 | #include "common-signal.h" |
28db6fbf | 35 | #include "constants.h" |
19d22d43 | 36 | #include "core-varlink.h" |
786d19fd | 37 | #include "creds-util.h" |
400f1a33 LP |
38 | #include "dbus-job.h" |
39 | #include "dbus-manager.h" | |
40 | #include "dbus-unit.h" | |
41 | #include "dbus.h" | |
d063a527 | 42 | #include "dirent-util.h" |
400f1a33 | 43 | #include "env-util.h" |
4f5dd394 | 44 | #include "escape.h" |
ec75e8e0 | 45 | #include "event-util.h" |
89711996 | 46 | #include "exec-util.h" |
d3070fbd | 47 | #include "execute.h" |
400f1a33 | 48 | #include "exit-status.h" |
3ffd4af2 | 49 | #include "fd-util.h" |
0d39fa9c | 50 | #include "fileio.h" |
385093b7 | 51 | #include "generator-setup.h" |
60918275 | 52 | #include "hashmap.h" |
baa6a42d | 53 | #include "initrd-util.h" |
9e5fd717 | 54 | #include "inotify-util.h" |
5cfa33e0 | 55 | #include "install.h" |
19d22d43 | 56 | #include "io-util.h" |
0690160e | 57 | #include "label-util.h" |
d904afc7 | 58 | #include "load-fragment.h" |
786d19fd | 59 | #include "locale-setup.h" |
16354eff | 60 | #include "log.h" |
400f1a33 | 61 | #include "macro.h" |
3ffd4af2 | 62 | #include "manager.h" |
2a341bb9 | 63 | #include "manager-dump.h" |
a01ba4b2 | 64 | #include "manager-serialize.h" |
0a970718 | 65 | #include "memory-util.h" |
35cd0ba5 | 66 | #include "mkdir-label.h" |
ca6ce62d | 67 | #include "mount-util.h" |
4bd03515 | 68 | #include "os-util.h" |
6bedfcbb | 69 | #include "parse-util.h" |
400f1a33 LP |
70 | #include "path-lookup.h" |
71 | #include "path-util.h" | |
72 | #include "process-util.h" | |
6bb00842 | 73 | #include "psi-util.h" |
ea430986 | 74 | #include "ratelimit.h" |
31ce987c | 75 | #include "rlimit-util.h" |
c6878637 | 76 | #include "rm-rf.h" |
45ae2f72 | 77 | #include "selinux-util.h" |
400f1a33 | 78 | #include "signal-util.h" |
57b7a260 | 79 | #include "socket-util.h" |
514f4ef5 | 80 | #include "special.h" |
8fcde012 | 81 | #include "stat-util.h" |
8b43440b | 82 | #include "string-table.h" |
07630cea | 83 | #include "string-util.h" |
400f1a33 | 84 | #include "strv.h" |
dd1db3c2 | 85 | #include "strxcpyx.h" |
6123dfaa | 86 | #include "sysctl-util.h" |
a6ecbf83 | 87 | #include "syslog-util.h" |
400f1a33 LP |
88 | #include "terminal-util.h" |
89 | #include "time-util.h" | |
90 | #include "transaction.h" | |
63e8df04 | 91 | #include "uid-range.h" |
affb60b1 | 92 | #include "umask-util.h" |
400f1a33 | 93 | #include "unit-name.h" |
00d9ef85 | 94 | #include "user-util.h" |
5dc4c17f | 95 | #include "virt.h" |
e96d6be7 | 96 | #include "watchdog.h" |
60918275 | 97 | |
a47806fa | 98 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 99 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 100 | |
03b717a3 | 101 | /* Initial delay and the interval for printing status messages about running jobs */ |
1b4154a8 ZJS |
102 | #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC) |
103 | #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC) | |
fd08a840 | 104 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) |
03b717a3 MS |
105 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
106 | ||
5238e957 | 107 | /* 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 |
108 | * the queue gets more empty. */ |
109 | #define MANAGER_BUS_BUSY_THRESHOLD 1024LU | |
110 | ||
111 | /* How many units and jobs to process of the bus queue before returning to the event loop. */ | |
112 | #define MANAGER_BUS_MESSAGE_BUDGET 100U | |
113 | ||
718db961 | 114 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 115 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
116 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
117 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
118 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 119 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 120 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 121 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
575b300b | 122 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata); |
bbf5fd8e | 123 | static int manager_dispatch_timezone_change(sd_event_source *source, const struct inotify_event *event, void *userdata); |
64691d20 | 124 | static int manager_run_environment_generators(Manager *m); |
e801700e | 125 | static int manager_run_generators(Manager *m); |
06a4eb07 | 126 | static void manager_vacuum(Manager *m); |
718db961 | 127 | |
1b4154a8 | 128 | static usec_t manager_watch_jobs_next_time(Manager *m) { |
3889fc6f ZJS |
129 | usec_t timeout; |
130 | ||
131 | if (MANAGER_IS_USER(m)) | |
132 | /* Let the user manager without a timeout show status quickly, so the system manager can make | |
133 | * use of it, if it wants to. */ | |
134 | timeout = JOBS_IN_PROGRESS_WAIT_USEC * 2 / 3; | |
135 | else if (show_status_on(m->show_status)) | |
136 | /* When status is on, just use the usual timeout. */ | |
137 | timeout = JOBS_IN_PROGRESS_WAIT_USEC; | |
138 | else | |
139 | timeout = JOBS_IN_PROGRESS_QUIET_WAIT_USEC; | |
140 | ||
141 | return usec_add(now(CLOCK_MONOTONIC), timeout); | |
1b4154a8 ZJS |
142 | } |
143 | ||
2ae56591 | 144 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 145 | usec_t next; |
cfa9677b | 146 | int r; |
e5723c89 | 147 | |
718db961 | 148 | assert(m); |
03b717a3 | 149 | |
42bf1ae1 FB |
150 | /* We do not want to show the cylon animation if the user |
151 | * needs to confirm service executions otherwise confirmation | |
152 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 153 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
154 | return; |
155 | ||
718db961 | 156 | if (m->jobs_in_progress_event_source) |
2ae56591 | 157 | return; |
03b717a3 | 158 | |
1b4154a8 | 159 | next = manager_watch_jobs_next_time(m); |
cfa9677b | 160 | r = sd_event_add_time( |
6a0f1f6d LP |
161 | m->event, |
162 | &m->jobs_in_progress_event_source, | |
163 | CLOCK_MONOTONIC, | |
164 | next, 0, | |
165 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
166 | if (r < 0) |
167 | return; | |
7dfbe2e3 TG |
168 | |
169 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
170 | } |
171 | ||
fbd0b64f | 172 | #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL)) |
03b717a3 | 173 | |
03b717a3 MS |
174 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
175 | char *p = buffer; | |
176 | ||
177 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
178 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
179 | ||
180 | if (pos > 1) { | |
6282c859 MS |
181 | if (pos > 2) |
182 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
183 | if (log_get_show_color()) |
184 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
185 | *p++ = '*'; |
186 | } | |
187 | ||
188 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
189 | if (log_get_show_color()) |
190 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
191 | *p++ = '*'; |
192 | } | |
193 | ||
64c3610b FB |
194 | if (log_get_show_color()) |
195 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
196 | |
197 | if (pos < width) { | |
64c3610b FB |
198 | if (log_get_show_color()) |
199 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 200 | *p++ = '*'; |
6282c859 MS |
201 | if (pos < width-1) |
202 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
203 | if (log_get_show_color()) |
204 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 205 | } |
03b717a3 MS |
206 | } |
207 | ||
1addc46c | 208 | static void manager_flip_auto_status(Manager *m, bool enable, const char *reason) { |
f755e3b7 LP |
209 | assert(m); |
210 | ||
cb8ccb22 ZJS |
211 | if (enable) { |
212 | if (m->show_status == SHOW_STATUS_AUTO) | |
7365a296 | 213 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY, reason); |
cb8ccb22 ZJS |
214 | } else { |
215 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
7365a296 | 216 | manager_set_show_status(m, SHOW_STATUS_AUTO, reason); |
cb8ccb22 ZJS |
217 | } |
218 | } | |
219 | ||
03b717a3 | 220 | static void manager_print_jobs_in_progress(Manager *m) { |
03b717a3 | 221 | Job *j; |
03b717a3 MS |
222 | unsigned counter = 0, print_nr; |
223 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
224 | unsigned cylon_pos; | |
4c989f89 | 225 | uint64_t timeout = 0; |
03b717a3 | 226 | |
718db961 | 227 | assert(m); |
9c3349e2 | 228 | assert(m->n_running_jobs > 0); |
718db961 | 229 | |
7365a296 | 230 | manager_flip_auto_status(m, true, "delay"); |
d450b6f2 | 231 | |
03b717a3 MS |
232 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
233 | ||
90e74a66 | 234 | HASHMAP_FOREACH(j, m->jobs) |
03b717a3 MS |
235 | if (j->state == JOB_RUNNING && counter++ == print_nr) |
236 | break; | |
237 | ||
e970a72e MS |
238 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
239 | * so the above loop must have succeeded in finding j. */ | |
240 | assert(counter == print_nr + 1); | |
51d122af | 241 | assert(j); |
5a82a91a | 242 | |
03b717a3 MS |
243 | cylon_pos = m->jobs_in_progress_iteration % 14; |
244 | if (cylon_pos >= 8) | |
245 | cylon_pos = 14 - cylon_pos; | |
246 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
247 | ||
8bb310c3 ZJS |
248 | m->jobs_in_progress_iteration++; |
249 | ||
3889fc6f | 250 | char job_of_n[STRLEN("( of ) ") + DECIMAL_STR_MAX(unsigned)*2] = ""; |
5291f26d | 251 | if (m->n_running_jobs > 1) |
3889fc6f | 252 | xsprintf(job_of_n, "(%u of %u) ", counter, m->n_running_jobs); |
03b717a3 | 253 | |
4c989f89 | 254 | (void) job_get_timeout(j, &timeout); |
8bb310c3 | 255 | |
04d232d8 ZJS |
256 | /* We want to use enough information for the user to identify previous lines talking about the same |
257 | * unit, but keep the message as short as possible. So if 'Starting foo.service' or 'Starting | |
3889fc6f | 258 | * foo.service - Description' were used, 'foo.service' is enough here. On the other hand, if we used |
04d232d8 ZJS |
259 | * 'Starting Description' before, then we shall also use 'Description' here. So we pass NULL as the |
260 | * second argument to unit_status_string(). */ | |
261 | const char *ident = unit_status_string(j->unit, NULL); | |
262 | ||
3889fc6f | 263 | const char *time = FORMAT_TIMESPAN(now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
4c989f89 | 264 | const char *limit = timeout > 0 ? FORMAT_TIMESPAN(timeout - j->begin_usec, 1*USEC_PER_SEC) : "no limit"; |
3889fc6f ZJS |
265 | |
266 | if (m->status_unit_format == STATUS_UNIT_FORMAT_DESCRIPTION) | |
267 | /* When using 'Description', we effectively don't have enough space to show the nested status | |
268 | * without ellipsization, so let's not even try. */ | |
269 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
270 | "%sA %s job is running for %s (%s / %s)", | |
271 | job_of_n, | |
272 | job_type_to_string(j->type), | |
273 | ident, | |
274 | time, limit); | |
275 | else { | |
276 | const char *status_text = unit_status_text(j->unit); | |
277 | ||
278 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
279 | "%sJob %s/%s running (%s / %s)%s%s", | |
280 | job_of_n, | |
281 | ident, | |
282 | job_type_to_string(j->type), | |
283 | time, limit, | |
284 | status_text ? ": " : "", | |
285 | strempty(status_text)); | |
286 | } | |
287 | ||
288 | sd_notifyf(false, | |
289 | "STATUS=%sUser job %s/%s running (%s / %s)...", | |
290 | job_of_n, | |
291 | ident, | |
292 | job_type_to_string(j->type), | |
293 | time, limit); | |
294 | m->status_ready = false; | |
03b717a3 MS |
295 | } |
296 | ||
e46b13c8 | 297 | static int have_ask_password(void) { |
c2b2df60 | 298 | _cleanup_closedir_ DIR *dir = NULL; |
e46b13c8 ZJS |
299 | |
300 | dir = opendir("/run/systemd/ask-password"); | |
301 | if (!dir) { | |
302 | if (errno == ENOENT) | |
303 | return false; | |
304 | else | |
305 | return -errno; | |
306 | } | |
307 | ||
c7f0d9e5 | 308 | FOREACH_DIRENT_ALL(de, dir, return -errno) |
e46b13c8 ZJS |
309 | if (startswith(de->d_name, "ask.")) |
310 | return true; | |
8fb3f009 | 311 | return false; |
e46b13c8 ZJS |
312 | } |
313 | ||
314 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
315 | int fd, uint32_t revents, void *userdata) { | |
99534007 | 316 | Manager *m = ASSERT_PTR(userdata); |
e46b13c8 | 317 | |
665dfe93 | 318 | (void) flush_fd(fd); |
e46b13c8 ZJS |
319 | |
320 | m->have_ask_password = have_ask_password(); | |
321 | if (m->have_ask_password < 0) | |
322 | /* Log error but continue. Negative have_ask_password | |
323 | * is treated as unknown status. */ | |
c33b3297 | 324 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
325 | |
326 | return 0; | |
327 | } | |
328 | ||
329 | static void manager_close_ask_password(Manager *m) { | |
330 | assert(m); | |
331 | ||
5dcadb4c | 332 | m->ask_password_event_source = sd_event_source_disable_unref(m->ask_password_event_source); |
90990e28 | 333 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
334 | m->have_ask_password = -EINVAL; |
335 | } | |
336 | ||
337 | static int manager_check_ask_password(Manager *m) { | |
338 | int r; | |
339 | ||
340 | assert(m); | |
341 | ||
342 | if (!m->ask_password_event_source) { | |
343 | assert(m->ask_password_inotify_fd < 0); | |
344 | ||
17e4b070 | 345 | (void) mkdir_p_label("/run/systemd/ask-password", 0755); |
e46b13c8 ZJS |
346 | |
347 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 | 348 | if (m->ask_password_inotify_fd < 0) |
330b8fb3 | 349 | return log_error_errno(errno, "Failed to create inotify object: %m"); |
e46b13c8 | 350 | |
27c3112d FB |
351 | r = inotify_add_watch_and_warn(m->ask_password_inotify_fd, |
352 | "/run/systemd/ask-password", | |
353 | IN_CREATE|IN_DELETE|IN_MOVE); | |
354 | if (r < 0) { | |
e46b13c8 | 355 | manager_close_ask_password(m); |
27c3112d | 356 | return r; |
e46b13c8 ZJS |
357 | } |
358 | ||
359 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
360 | m->ask_password_inotify_fd, EPOLLIN, | |
361 | manager_dispatch_ask_password_fd, m); | |
362 | if (r < 0) { | |
df3d3bdf | 363 | log_error_errno(r, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 | 364 | manager_close_ask_password(m); |
df3d3bdf | 365 | return r; |
e46b13c8 ZJS |
366 | } |
367 | ||
7dfbe2e3 TG |
368 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
369 | ||
e46b13c8 ZJS |
370 | /* Queries might have been added meanwhile... */ |
371 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
372 | m->ask_password_inotify_fd, EPOLLIN, m); | |
373 | } | |
374 | ||
375 | return m->have_ask_password; | |
376 | } | |
377 | ||
31a7eb86 | 378 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
379 | int r; |
380 | ||
718db961 LP |
381 | assert(m); |
382 | ||
383 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
384 | return 0; |
385 | ||
386 | if (m->idle_pipe[2] < 0) | |
387 | return 0; | |
388 | ||
151b9b96 | 389 | 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 |
390 | if (r < 0) |
391 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 392 | |
7dfbe2e3 TG |
393 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
394 | ||
31a7eb86 | 395 | return 0; |
31a7eb86 ZJS |
396 | } |
397 | ||
718db961 LP |
398 | static void manager_close_idle_pipe(Manager *m) { |
399 | assert(m); | |
31a7eb86 | 400 | |
5dcadb4c | 401 | m->idle_pipe_event_source = sd_event_source_disable_unref(m->idle_pipe_event_source); |
cd72bd8a | 402 | |
3d94f76c LP |
403 | safe_close_pair(m->idle_pipe); |
404 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
405 | } |
406 | ||
8742514c | 407 | static int manager_setup_time_change(Manager *m) { |
718db961 | 408 | int r; |
b92bea5d | 409 | |
718db961 | 410 | assert(m); |
8742514c | 411 | |
638cece4 | 412 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
413 | return 0; |
414 | ||
5dcadb4c | 415 | m->time_change_event_source = sd_event_source_disable_unref(m->time_change_event_source); |
7feedd18 | 416 | |
ec75e8e0 | 417 | r = event_add_time_change(m->event, &m->time_change_event_source, manager_dispatch_time_change_fd, m); |
23bbb0de MS |
418 | if (r < 0) |
419 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 420 | |
a5cc7e5a LP |
421 | /* Schedule this slightly earlier than the .timer event sources */ |
422 | r = sd_event_source_set_priority(m->time_change_event_source, SD_EVENT_PRIORITY_NORMAL-1); | |
423 | if (r < 0) | |
424 | return log_error_errno(r, "Failed to set priority of time change event sources: %m"); | |
425 | ||
8742514c LP |
426 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
bbf5fd8e LP |
431 | static int manager_read_timezone_stat(Manager *m) { |
432 | struct stat st; | |
433 | bool changed; | |
434 | ||
435 | assert(m); | |
436 | ||
437 | /* Read the current stat() data of /etc/localtime so that we detect changes */ | |
438 | if (lstat("/etc/localtime", &st) < 0) { | |
439 | log_debug_errno(errno, "Failed to stat /etc/localtime, ignoring: %m"); | |
440 | changed = m->etc_localtime_accessible; | |
441 | m->etc_localtime_accessible = false; | |
442 | } else { | |
443 | usec_t k; | |
444 | ||
445 | k = timespec_load(&st.st_mtim); | |
446 | changed = !m->etc_localtime_accessible || k != m->etc_localtime_mtime; | |
447 | ||
448 | m->etc_localtime_mtime = k; | |
449 | m->etc_localtime_accessible = true; | |
450 | } | |
451 | ||
452 | return changed; | |
453 | } | |
454 | ||
455 | static int manager_setup_timezone_change(Manager *m) { | |
a5cc7e5a | 456 | _cleanup_(sd_event_source_unrefp) sd_event_source *new_event = NULL; |
bbf5fd8e LP |
457 | int r; |
458 | ||
459 | assert(m); | |
460 | ||
638cece4 | 461 | if (MANAGER_IS_TEST_RUN(m)) |
bbf5fd8e LP |
462 | return 0; |
463 | ||
464 | /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even | |
465 | * though another link might be kept), renames, and file close operations after writing. Note we don't bother | |
466 | * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count | |
467 | * went to zero and all fds to it are closed. | |
468 | * | |
469 | * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases | |
470 | * correctly. | |
471 | * | |
472 | * Note that we create the new event source first here, before releasing the old one. This should optimize | |
473 | * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */ | |
474 | ||
475 | r = sd_event_add_inotify(m->event, &new_event, "/etc/localtime", | |
476 | IN_ATTRIB|IN_MOVE_SELF|IN_CLOSE_WRITE|IN_DONT_FOLLOW, manager_dispatch_timezone_change, m); | |
0cb21d8c LP |
477 | if (r == -ENOENT) { |
478 | /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by | |
479 | * O_CREATE or by rename() */ | |
480 | ||
481 | log_debug_errno(r, "/etc/localtime doesn't exist yet, watching /etc instead."); | |
bbf5fd8e LP |
482 | r = sd_event_add_inotify(m->event, &new_event, "/etc", |
483 | IN_CREATE|IN_MOVED_TO|IN_ONLYDIR, manager_dispatch_timezone_change, m); | |
0cb21d8c | 484 | } |
bbf5fd8e LP |
485 | if (r < 0) |
486 | return log_error_errno(r, "Failed to create timezone change event source: %m"); | |
487 | ||
a5cc7e5a LP |
488 | /* Schedule this slightly earlier than the .timer event sources */ |
489 | r = sd_event_source_set_priority(new_event, SD_EVENT_PRIORITY_NORMAL-1); | |
490 | if (r < 0) | |
491 | return log_error_errno(r, "Failed to set priority of timezone change event sources: %m"); | |
492 | ||
bbf5fd8e | 493 | sd_event_source_unref(m->timezone_change_event_source); |
a5cc7e5a | 494 | m->timezone_change_event_source = TAKE_PTR(new_event); |
bbf5fd8e LP |
495 | |
496 | return 0; | |
497 | } | |
498 | ||
80876c20 | 499 | static int enable_special_signals(Manager *m) { |
254d1313 | 500 | _cleanup_close_ int fd = -EBADF; |
80876c20 LP |
501 | |
502 | assert(m); | |
503 | ||
638cece4 | 504 | if (MANAGER_IS_TEST_RUN(m)) |
37453b3a EV |
505 | return 0; |
506 | ||
a41b539e | 507 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
508 | * this will fail with EPERM (older) or EINVAL (newer), so |
509 | * ignore that. */ | |
4c701096 | 510 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 511 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 512 | |
a41b539e LP |
513 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
514 | if (fd < 0) { | |
515 | /* Support systems without virtual console */ | |
516 | if (fd != -ENOENT) | |
56f64d95 | 517 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 518 | } else { |
80876c20 LP |
519 | /* Enable that we get SIGWINCH on kbrequest */ |
520 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 521 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
522 | } |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
8750ac02 ZJS |
527 | #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1) |
528 | ||
ce578209 | 529 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
530 | struct sigaction sa = { |
531 | .sa_handler = SIG_DFL, | |
532 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
533 | }; | |
718db961 LP |
534 | sigset_t mask; |
535 | int r; | |
60918275 | 536 | |
ce578209 LP |
537 | assert(m); |
538 | ||
57c0c30e LP |
539 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
540 | ||
4dffec14 LP |
541 | /* We make liberal use of realtime signals here. On |
542 | * Linux/glibc we have 30 of them (with the exception of Linux | |
543 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
544 | * (aka SIGRTMAX). */ | |
7d793605 | 545 | |
4dffec14 | 546 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
547 | sigset_add_many(&mask, |
548 | SIGCHLD, /* Child died */ | |
549 | SIGTERM, /* Reexecute daemon */ | |
550 | SIGHUP, /* Reload configuration */ | |
54d04cd1 | 551 | SIGUSR1, /* systemd: reconnect to D-Bus */ |
7d793605 LP |
552 | SIGUSR2, /* systemd: dump status */ |
553 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
554 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
555 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 556 | |
7d793605 | 557 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 558 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
559 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
560 | SIGRTMIN+3, /* systemd: start halt.target */ | |
561 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
562 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 563 | SIGRTMIN+6, /* systemd: start kexec.target */ |
13ffc607 | 564 | SIGRTMIN+7, /* systemd: start soft-reboot.target */ |
4dffec14 LP |
565 | |
566 | /* ... space for more special targets ... */ | |
567 | ||
0003d1ab LP |
568 | SIGRTMIN+13, /* systemd: Immediate halt */ |
569 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
570 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
571 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
13ffc607 | 572 | SIGRTMIN+17, /* systemd: Immediate soft-reboot */ |
29e6b0c1 LP |
573 | SIGRTMIN+18, /* systemd: control command */ |
574 | ||
575 | /* ... space ... */ | |
4dffec14 | 576 | |
0658666b LP |
577 | SIGRTMIN+20, /* systemd: enable status messages */ |
578 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
579 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
580 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 581 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
463aef23 | 582 | SIGRTMIN+25, /* systemd: reexecute manager */ |
4dffec14 | 583 | |
8750ac02 ZJS |
584 | /* Apparently Linux on hppa had fewer RT signals until v3.18, |
585 | * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered, | |
586 | * see commit v3.17-7614-g1f25df2eff. | |
587 | * | |
588 | * We cannot unconditionally make use of those signals here, | |
589 | * so let's use a runtime check. Since these commands are | |
590 | * accessible by different means and only really a safety | |
591 | * net, the missing functionality on hppa shouldn't matter. | |
592 | */ | |
593 | ||
594 | RTSIG_IF_AVAILABLE(SIGRTMIN+26), /* systemd: set log target to journal-or-kmsg */ | |
595 | RTSIG_IF_AVAILABLE(SIGRTMIN+27), /* systemd: set log target to console */ | |
596 | RTSIG_IF_AVAILABLE(SIGRTMIN+28), /* systemd: set log target to kmsg */ | |
597 | RTSIG_IF_AVAILABLE(SIGRTMIN+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */ | |
4dffec14 LP |
598 | |
599 | /* ... one free signal here SIGRTMIN+30 ... */ | |
7d793605 | 600 | -1); |
ce578209 LP |
601 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
602 | ||
718db961 LP |
603 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
604 | if (m->signal_fd < 0) | |
ce578209 LP |
605 | return -errno; |
606 | ||
151b9b96 | 607 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
608 | if (r < 0) |
609 | return r; | |
ce578209 | 610 | |
7dfbe2e3 TG |
611 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
612 | ||
d8fdc620 LP |
613 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
614 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
615 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
616 | * status information before detecting that there's no process in a cgroup. */ | |
617 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
618 | if (r < 0) |
619 | return r; | |
620 | ||
463d0d15 | 621 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 622 | return enable_special_signals(m); |
e1414003 | 623 | |
ce578209 LP |
624 | return 0; |
625 | } | |
626 | ||
1ad6e8b3 | 627 | static char** sanitize_environment(char **l) { |
f069efb4 | 628 | |
47cf8ff2 | 629 | /* Let's remove some environment variables that we need ourselves to communicate with our clients */ |
f069efb4 | 630 | strv_env_unset_many( |
1ad6e8b3 | 631 | l, |
8047ac8f LP |
632 | "CACHE_DIRECTORY", |
633 | "CONFIGURATION_DIRECTORY", | |
bb0c0d6f | 634 | "CREDENTIALS_DIRECTORY", |
47cf8ff2 LP |
635 | "EXIT_CODE", |
636 | "EXIT_STATUS", | |
637 | "INVOCATION_ID", | |
638 | "JOURNAL_STREAM", | |
639 | "LISTEN_FDNAMES", | |
640 | "LISTEN_FDS", | |
641 | "LISTEN_PID", | |
8047ac8f | 642 | "LOGS_DIRECTORY", |
c792a2e5 | 643 | "LOG_NAMESPACE", |
f069efb4 LP |
644 | "MAINPID", |
645 | "MANAGERPID", | |
6bb00842 LP |
646 | "MEMORY_PRESSURE_WATCH", |
647 | "MEMORY_PRESSURE_WRITE", | |
c792a2e5 LP |
648 | "MONITOR_EXIT_CODE", |
649 | "MONITOR_EXIT_STATUS", | |
650 | "MONITOR_INVOCATION_ID", | |
651 | "MONITOR_SERVICE_RESULT", | |
652 | "MONITOR_UNIT", | |
47cf8ff2 | 653 | "NOTIFY_SOCKET", |
dcf3c3c3 | 654 | "PIDFILE", |
47cf8ff2 LP |
655 | "REMOTE_ADDR", |
656 | "REMOTE_PORT", | |
8047ac8f | 657 | "RUNTIME_DIRECTORY", |
47cf8ff2 | 658 | "SERVICE_RESULT", |
8047ac8f | 659 | "STATE_DIRECTORY", |
c792a2e5 LP |
660 | "SYSTEMD_EXEC_PID", |
661 | "TRIGGER_PATH", | |
662 | "TRIGGER_TIMER_MONOTONIC_USEC", | |
663 | "TRIGGER_TIMER_REALTIME_USEC", | |
664 | "TRIGGER_UNIT", | |
f069efb4 LP |
665 | "WATCHDOG_PID", |
666 | "WATCHDOG_USEC", | |
667 | NULL); | |
47cf8ff2 LP |
668 | |
669 | /* Let's order the environment alphabetically, just to make it pretty */ | |
305757d8 | 670 | return strv_sort(l); |
f069efb4 LP |
671 | } |
672 | ||
79a224c4 | 673 | int manager_default_environment(Manager *m) { |
db11487d ZJS |
674 | int r; |
675 | ||
71ecc858 LP |
676 | assert(m); |
677 | ||
1ad6e8b3 LP |
678 | m->transient_environment = strv_free(m->transient_environment); |
679 | ||
463d0d15 | 680 | if (MANAGER_IS_SYSTEM(m)) { |
c792a2e5 LP |
681 | /* The system manager always starts with a clean environment for its children. It does not |
682 | * import the kernel's or the parents' exported variables. | |
e21fea24 | 683 | * |
c792a2e5 LP |
684 | * The initial passed environment is untouched to keep /proc/self/environ valid; it is used |
685 | * for tagging the init process inside containers. */ | |
1ad6e8b3 | 686 | m->transient_environment = strv_new("PATH=" DEFAULT_PATH); |
db11487d ZJS |
687 | if (!m->transient_environment) |
688 | return log_oom(); | |
e21fea24 KS |
689 | |
690 | /* Import locale variables LC_*= from configuration */ | |
1ad6e8b3 | 691 | (void) locale_setup(&m->transient_environment); |
db11487d | 692 | } else { |
aaf057c4 | 693 | /* The user manager passes its own environment along to its children, except for $PATH. */ |
1ad6e8b3 | 694 | m->transient_environment = strv_copy(environ); |
db11487d ZJS |
695 | if (!m->transient_environment) |
696 | return log_oom(); | |
697 | ||
aaf057c4 | 698 | r = strv_env_replace_strdup(&m->transient_environment, "PATH=" DEFAULT_USER_PATH); |
db11487d ZJS |
699 | if (r < 0) |
700 | return log_oom(); | |
db11487d | 701 | } |
8b55b8c4 | 702 | |
1ad6e8b3 | 703 | sanitize_environment(m->transient_environment); |
e21fea24 | 704 | return 0; |
71ecc858 LP |
705 | } |
706 | ||
3536f49e YW |
707 | static int manager_setup_prefix(Manager *m) { |
708 | struct table_entry { | |
709 | uint64_t type; | |
710 | const char *suffix; | |
711 | }; | |
712 | ||
72fd1768 | 713 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
714 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
715 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
716 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
717 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
3536f49e YW |
718 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, |
719 | }; | |
720 | ||
72fd1768 | 721 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 | 722 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
f9c91932 | 723 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_STATE_PRIVATE, NULL }, |
9978e631 | 724 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, |
f9c91932 | 725 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_STATE_PRIVATE, "log" }, |
9978e631 | 726 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, |
3536f49e YW |
727 | }; |
728 | ||
3536f49e YW |
729 | assert(m); |
730 | ||
24b45970 ZJS |
731 | const struct table_entry *p = MANAGER_IS_SYSTEM(m) ? paths_system : paths_user; |
732 | int r; | |
3536f49e | 733 | |
24b45970 | 734 | for (ExecDirectoryType i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
51327bcc | 735 | r = sd_path_lookup(p[i].type, p[i].suffix, &m->prefix[i]); |
3536f49e | 736 | if (r < 0) |
998df7ce ZJS |
737 | return log_warning_errno(r, "Failed to lookup %s path: %m", |
738 | exec_directory_type_to_string(i)); | |
3536f49e YW |
739 | } |
740 | ||
741 | return 0; | |
742 | } | |
743 | ||
e8630e69 ZJS |
744 | static void manager_free_unit_name_maps(Manager *m) { |
745 | m->unit_id_map = hashmap_free(m->unit_id_map); | |
746 | m->unit_name_map = hashmap_free(m->unit_name_map); | |
3fb2326f | 747 | m->unit_path_cache = set_free(m->unit_path_cache); |
c2911d48 | 748 | m->unit_cache_timestamp_hash = 0; |
e8630e69 ZJS |
749 | } |
750 | ||
279d81dd LP |
751 | static int manager_setup_run_queue(Manager *m) { |
752 | int r; | |
753 | ||
754 | assert(m); | |
755 | assert(!m->run_queue_event_source); | |
756 | ||
757 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
758 | if (r < 0) | |
759 | return r; | |
760 | ||
761 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
762 | if (r < 0) | |
763 | return r; | |
764 | ||
765 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
769 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
770 | ||
771 | return 0; | |
772 | } | |
773 | ||
575b300b LP |
774 | static int manager_setup_sigchld_event_source(Manager *m) { |
775 | int r; | |
776 | ||
777 | assert(m); | |
778 | assert(!m->sigchld_event_source); | |
779 | ||
780 | r = sd_event_add_defer(m->event, &m->sigchld_event_source, manager_dispatch_sigchld, m); | |
781 | if (r < 0) | |
782 | return r; | |
783 | ||
784 | r = sd_event_source_set_priority(m->sigchld_event_source, SD_EVENT_PRIORITY_NORMAL-7); | |
785 | if (r < 0) | |
786 | return r; | |
787 | ||
788 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); | |
789 | if (r < 0) | |
790 | return r; | |
791 | ||
792 | (void) sd_event_source_set_description(m->sigchld_event_source, "manager-sigchld"); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
29e6b0c1 LP |
797 | int manager_setup_memory_pressure_event_source(Manager *m) { |
798 | int r; | |
799 | ||
800 | assert(m); | |
801 | ||
802 | m->memory_pressure_event_source = sd_event_source_disable_unref(m->memory_pressure_event_source); | |
803 | ||
804 | r = sd_event_add_memory_pressure(m->event, &m->memory_pressure_event_source, NULL, NULL); | |
805 | if (r < 0) | |
806 | log_full_errno(ERRNO_IS_NOT_SUPPORTED(r) || ERRNO_IS_PRIVILEGE(r) || (r == -EHOSTDOWN) ? LOG_DEBUG : LOG_NOTICE, r, | |
807 | "Failed to establish memory pressure event source, ignoring: %m"); | |
6bb00842 LP |
808 | else if (m->default_memory_pressure_threshold_usec != USEC_INFINITY) { |
809 | ||
810 | /* If there's a default memory pressure threshold set, also apply it to the service manager itself */ | |
811 | r = sd_event_source_set_memory_pressure_period( | |
812 | m->memory_pressure_event_source, | |
813 | m->default_memory_pressure_threshold_usec, | |
814 | MEMORY_PRESSURE_DEFAULT_WINDOW_USEC); | |
815 | if (r < 0) | |
816 | log_warning_errno(r, "Failed to adjust memory pressure threshold, ignoring: %m"); | |
817 | } | |
29e6b0c1 LP |
818 | |
819 | return 0; | |
820 | } | |
821 | ||
2ad591a3 LP |
822 | static int manager_find_credentials_dirs(Manager *m) { |
823 | const char *e; | |
824 | int r; | |
825 | ||
826 | assert(m); | |
827 | ||
828 | r = get_credentials_dir(&e); | |
829 | if (r < 0) { | |
830 | if (r != -ENXIO) | |
831 | log_debug_errno(r, "Failed to determine credentials directory, ignoring: %m"); | |
832 | } else { | |
833 | m->received_credentials_directory = strdup(e); | |
834 | if (!m->received_credentials_directory) | |
835 | return -ENOMEM; | |
836 | } | |
837 | ||
838 | r = get_encrypted_credentials_dir(&e); | |
839 | if (r < 0) { | |
840 | if (r != -ENXIO) | |
841 | log_debug_errno(r, "Failed to determine encrypted credentials directory, ignoring: %m"); | |
842 | } else { | |
843 | m->received_encrypted_credentials_directory = strdup(e); | |
844 | if (!m->received_encrypted_credentials_directory) | |
845 | return -ENOMEM; | |
846 | } | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
d35fe8c0 | 851 | void manager_set_switching_root(Manager *m, bool switching_root) { |
7fa49280 LP |
852 | assert(m); |
853 | ||
d35fe8c0 FB |
854 | m->switching_root = MANAGER_IS_SYSTEM(m) && switching_root; |
855 | } | |
856 | ||
4870133b | 857 | int manager_new(RuntimeScope runtime_scope, ManagerTestRunFlags test_run_flags, Manager **_m) { |
c70cac54 | 858 | _cleanup_(manager_freep) Manager *m = NULL; |
e3dd987c | 859 | int r; |
8e274523 LP |
860 | |
861 | assert(_m); | |
4870133b | 862 | assert(IN_SET(runtime_scope, RUNTIME_SCOPE_SYSTEM, RUNTIME_SCOPE_USER)); |
ce578209 | 863 | |
3ad228ce | 864 | m = new(Manager, 1); |
915b3753 | 865 | if (!m) |
8e274523 | 866 | return -ENOMEM; |
60918275 | 867 | |
3ad228ce | 868 | *m = (Manager) { |
4870133b | 869 | .runtime_scope = runtime_scope, |
3ad228ce LP |
870 | .objective = _MANAGER_OBJECTIVE_INVALID, |
871 | ||
36cf4507 ZJS |
872 | .status_unit_format = STATUS_UNIT_FORMAT_DEFAULT, |
873 | ||
3ad228ce LP |
874 | .default_timer_accuracy_usec = USEC_PER_MINUTE, |
875 | .default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT, | |
876 | .default_tasks_accounting = true, | |
3a0f06c4 | 877 | .default_tasks_max = TASKS_MAX_UNSET, |
4870133b LP |
878 | .default_timeout_start_usec = manager_default_timeout(runtime_scope), |
879 | .default_timeout_stop_usec = manager_default_timeout(runtime_scope), | |
3ad228ce | 880 | .default_restart_usec = DEFAULT_RESTART_USEC, |
4870133b | 881 | .default_device_timeout_usec = manager_default_timeout(runtime_scope), |
3ad228ce LP |
882 | |
883 | .original_log_level = -1, | |
884 | .original_log_target = _LOG_TARGET_INVALID, | |
885 | ||
986935cf FB |
886 | .watchdog_overridden[WATCHDOG_RUNTIME] = USEC_INFINITY, |
887 | .watchdog_overridden[WATCHDOG_REBOOT] = USEC_INFINITY, | |
888 | .watchdog_overridden[WATCHDOG_KEXEC] = USEC_INFINITY, | |
5717062e | 889 | .watchdog_overridden[WATCHDOG_PRETIMEOUT] = USEC_INFINITY, |
986935cf | 890 | |
44a41954 FB |
891 | .show_status_overridden = _SHOW_STATUS_INVALID, |
892 | ||
254d1313 ZJS |
893 | .notify_fd = -EBADF, |
894 | .cgroups_agent_fd = -EBADF, | |
895 | .signal_fd = -EBADF, | |
19ee48a6 | 896 | .user_lookup_fds = PIPE_EBADF, |
254d1313 ZJS |
897 | .private_listen_fd = -EBADF, |
898 | .dev_autofs_fd = -EBADF, | |
899 | .cgroup_inotify_fd = -EBADF, | |
900 | .pin_cgroupfs_fd = -EBADF, | |
901 | .ask_password_inotify_fd = -EBADF, | |
902 | .idle_pipe = { -EBADF, -EBADF, -EBADF, -EBADF}, | |
3ad228ce LP |
903 | |
904 | /* start as id #1, so that we can leave #0 around as "null-like" value */ | |
905 | .current_job_id = 1, | |
906 | ||
907 | .have_ask_password = -EINVAL, /* we don't know */ | |
908 | .first_boot = -1, | |
909 | .test_run_flags = test_run_flags, | |
afcfaa69 LP |
910 | |
911 | .default_oom_policy = OOM_STOP, | |
6bb00842 LP |
912 | |
913 | .default_memory_pressure_watch = CGROUP_PRESSURE_WATCH_AUTO, | |
914 | .default_memory_pressure_threshold_usec = USEC_INFINITY, | |
d9365956 LB |
915 | |
916 | .dump_ratelimit = { | |
917 | .interval = 10 * USEC_PER_MINUTE, | |
918 | .burst = 10, | |
919 | }, | |
3ad228ce | 920 | }; |
80876c20 | 921 | |
349cc4a5 | 922 | #if ENABLE_EFI |
463d0d15 | 923 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
924 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
925 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
926 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
927 | #endif |
928 | ||
f2341e0a | 929 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
930 | if (MANAGER_IS_SYSTEM(m)) { |
931 | m->unit_log_field = "UNIT="; | |
932 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
933 | |
934 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 935 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
936 | } else { |
937 | m->unit_log_field = "USER_UNIT="; | |
938 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
939 | |
940 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 941 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 942 | } |
f2341e0a | 943 | |
2e5c94b9 | 944 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
7d1e61ca | 945 | m->ctrl_alt_del_ratelimit = (const RateLimit) { .interval = 2 * USEC_PER_SEC, .burst = 7 }; |
2e5c94b9 | 946 | |
e21fea24 KS |
947 | r = manager_default_environment(m); |
948 | if (r < 0) | |
c70cac54 | 949 | return r; |
1137a57c | 950 | |
d5099efc | 951 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 952 | if (r < 0) |
c70cac54 | 953 | return r; |
60918275 | 954 | |
548f6937 | 955 | r = hashmap_ensure_allocated(&m->cgroup_unit, &path_hash_ops); |
718db961 | 956 | if (r < 0) |
c70cac54 | 957 | return r; |
9152c765 | 958 | |
d5099efc | 959 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 960 | if (r < 0) |
c70cac54 | 961 | return r; |
05e343b7 | 962 | |
da8e1782 MO |
963 | r = prioq_ensure_allocated(&m->run_queue, compare_job_priority); |
964 | if (r < 0) | |
965 | return r; | |
966 | ||
e8112e67 | 967 | r = manager_setup_prefix(m); |
718db961 | 968 | if (r < 0) |
c70cac54 | 969 | return r; |
8742514c | 970 | |
2ad591a3 LP |
971 | r = manager_find_credentials_dirs(m); |
972 | if (r < 0) | |
973 | return r; | |
bb0c0d6f | 974 | |
e8112e67 | 975 | r = sd_event_default(&m->event); |
8742514c | 976 | if (r < 0) |
c70cac54 | 977 | return r; |
9152c765 | 978 | |
e8112e67 | 979 | r = manager_setup_run_queue(m); |
a1d32bac | 980 | if (r < 0) |
c70cac54 | 981 | return r; |
8e274523 | 982 | |
5dd2f5ff | 983 | if (FLAGS_SET(test_run_flags, MANAGER_TEST_RUN_MINIMAL)) { |
e8112e67 ZJS |
984 | m->cgroup_root = strdup(""); |
985 | if (!m->cgroup_root) | |
986 | return -ENOMEM; | |
987 | } else { | |
988 | r = manager_setup_signals(m); | |
989 | if (r < 0) | |
990 | return r; | |
8c47c732 | 991 | |
e8112e67 ZJS |
992 | r = manager_setup_cgroup(m); |
993 | if (r < 0) | |
994 | return r; | |
575b300b | 995 | |
e8112e67 ZJS |
996 | r = manager_setup_time_change(m); |
997 | if (r < 0) | |
998 | return r; | |
9670d583 | 999 | |
bbf5fd8e LP |
1000 | r = manager_read_timezone_stat(m); |
1001 | if (r < 0) | |
1002 | return r; | |
1003 | ||
ea5c5f68 | 1004 | (void) manager_setup_timezone_change(m); |
bbf5fd8e | 1005 | |
e8112e67 ZJS |
1006 | r = manager_setup_sigchld_event_source(m); |
1007 | if (r < 0) | |
1008 | return r; | |
b1994387 | 1009 | |
29e6b0c1 LP |
1010 | r = manager_setup_memory_pressure_event_source(m); |
1011 | if (r < 0) | |
1012 | return r; | |
1013 | ||
b1994387 | 1014 | #if HAVE_LIBBPF |
ba187c9c | 1015 | if (MANAGER_IS_SYSTEM(m) && lsm_bpf_supported(/* initialize = */ true)) { |
b1994387 ILG |
1016 | r = lsm_bpf_setup(m); |
1017 | if (r < 0) | |
299d9417 | 1018 | log_warning_errno(r, "Failed to setup LSM BPF, ignoring: %m"); |
b1994387 ILG |
1019 | } |
1020 | #endif | |
e8112e67 | 1021 | } |
e27fe688 | 1022 | |
2f8c48b6 AZ |
1023 | if (test_run_flags == 0) { |
1024 | if (MANAGER_IS_SYSTEM(m)) | |
1025 | r = mkdir_label("/run/systemd/units", 0755); | |
1026 | else { | |
1027 | _cleanup_free_ char *units_path = NULL; | |
1028 | r = xdg_user_runtime_dir(&units_path, "/systemd/units"); | |
1029 | if (r < 0) | |
1030 | return r; | |
1031 | r = mkdir_p_label(units_path, 0755); | |
1032 | } | |
1033 | ||
d3070fbd | 1034 | if (r < 0 && r != -EEXIST) |
c70cac54 | 1035 | return r; |
d3070fbd LP |
1036 | } |
1037 | ||
e27fe688 LP |
1038 | m->taint_usr = |
1039 | !in_initrd() && | |
db55bbf2 | 1040 | dir_is_empty("/usr", /* ignore_hidden_or_backup= */ false) > 0; |
e27fe688 | 1041 | |
232f6754 ZJS |
1042 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
1043 | * since they might have gotten serialized across the reexec. */ | |
3536f49e | 1044 | |
1cc6c93a YW |
1045 | *_m = TAKE_PTR(m); |
1046 | ||
8e274523 | 1047 | return 0; |
60918275 LP |
1048 | } |
1049 | ||
d86f9d52 | 1050 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 1051 | int r; |
d86f9d52 | 1052 | |
638cece4 | 1053 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
1054 | return 0; |
1055 | ||
d86f9d52 | 1056 | if (m->notify_fd < 0) { |
254d1313 | 1057 | _cleanup_close_ int fd = -EBADF; |
f36a9d59 ZJS |
1058 | union sockaddr_union sa; |
1059 | socklen_t sa_len; | |
d86f9d52 LP |
1060 | |
1061 | /* First free all secondary fields */ | |
a1e58e8e | 1062 | m->notify_socket = mfree(m->notify_socket); |
5dcadb4c | 1063 | m->notify_event_source = sd_event_source_disable_unref(m->notify_event_source); |
d86f9d52 LP |
1064 | |
1065 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
1066 | if (fd < 0) |
1067 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 1068 | |
28e7e934 | 1069 | fd_increase_rxbuf(fd, NOTIFY_RCVBUF_SIZE); |
a47806fa | 1070 | |
b910cc72 | 1071 | m->notify_socket = path_join(m->prefix[EXEC_DIRECTORY_RUNTIME], "systemd/notify"); |
498e87d6 LP |
1072 | if (!m->notify_socket) |
1073 | return log_oom(); | |
1074 | ||
f36a9d59 ZJS |
1075 | r = sockaddr_un_set_path(&sa.un, m->notify_socket); |
1076 | if (r < 0) | |
1077 | return log_error_errno(r, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", | |
1078 | m->notify_socket); | |
1079 | sa_len = r; | |
15a3e96f | 1080 | |
498e87d6 | 1081 | (void) mkdir_parents_label(m->notify_socket, 0755); |
fbda85b0 | 1082 | (void) sockaddr_un_unlink(&sa.un); |
7181dbdb | 1083 | |
45ae2f72 | 1084 | r = mac_selinux_bind(fd, &sa.sa, sa_len); |
4a62c710 | 1085 | if (r < 0) |
45ae2f72 | 1086 | return log_error_errno(r, "bind(%s) failed: %m", m->notify_socket); |
d86f9d52 | 1087 | |
2ff48e98 | 1088 | r = setsockopt_int(fd, SOL_SOCKET, SO_PASSCRED, true); |
4a62c710 | 1089 | if (r < 0) |
2ff48e98 | 1090 | return log_error_errno(r, "SO_PASSCRED failed: %m"); |
d86f9d52 | 1091 | |
c10d6bdb | 1092 | m->notify_fd = TAKE_FD(fd); |
d86f9d52 LP |
1093 | |
1094 | log_debug("Using notification socket %s", m->notify_socket); | |
1095 | } | |
1096 | ||
1097 | if (!m->notify_event_source) { | |
151b9b96 | 1098 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
1099 | if (r < 0) |
1100 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 1101 | |
d8fdc620 LP |
1102 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
1103 | * service an exit message belongs. */ | |
575b300b | 1104 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-8); |
23bbb0de MS |
1105 | if (r < 0) |
1106 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
1107 | |
1108 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
1109 | } |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
d8fdc620 LP |
1114 | static int manager_setup_cgroups_agent(Manager *m) { |
1115 | ||
1116 | static const union sockaddr_union sa = { | |
1117 | .un.sun_family = AF_UNIX, | |
1118 | .un.sun_path = "/run/systemd/cgroups-agent", | |
1119 | }; | |
1120 | int r; | |
1121 | ||
1122 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
1123 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
1124 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
1125 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
1126 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
1127 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
1128 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
1129 | * we thus won't lose messages. | |
1130 | * | |
1131 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
1132 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
1133 | * bus for these messages. */ | |
1134 | ||
638cece4 | 1135 | if (MANAGER_IS_TEST_RUN(m)) |
d8fdc620 LP |
1136 | return 0; |
1137 | ||
1138 | if (!MANAGER_IS_SYSTEM(m)) | |
1139 | return 0; | |
1140 | ||
c22800e4 | 1141 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
1142 | if (r < 0) |
1143 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
1144 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
1145 | return 0; |
1146 | ||
1147 | if (m->cgroups_agent_fd < 0) { | |
254d1313 | 1148 | _cleanup_close_ int fd = -EBADF; |
d8fdc620 LP |
1149 | |
1150 | /* First free all secondary fields */ | |
5dcadb4c | 1151 | m->cgroups_agent_event_source = sd_event_source_disable_unref(m->cgroups_agent_event_source); |
d8fdc620 LP |
1152 | |
1153 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1154 | if (fd < 0) | |
1155 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
1156 | ||
28e7e934 | 1157 | fd_increase_rxbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); |
d8fdc620 | 1158 | |
155b6876 | 1159 | (void) sockaddr_un_unlink(&sa.un); |
d8fdc620 LP |
1160 | |
1161 | /* Only allow root to connect to this socket */ | |
2053593f | 1162 | WITH_UMASK(0077) |
fc2fffe7 | 1163 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
1164 | if (r < 0) |
1165 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
1166 | ||
0b7e8b32 | 1167 | m->cgroups_agent_fd = TAKE_FD(fd); |
d8fdc620 LP |
1168 | } |
1169 | ||
1170 | if (!m->cgroups_agent_event_source) { | |
1171 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
1172 | if (r < 0) | |
1173 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
1174 | ||
cbe83389 LP |
1175 | /* Process cgroups notifications early. Note that when the agent notification is received |
1176 | * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than | |
1177 | * that. Also see handling of cgroup inotify for the unified cgroup stuff. */ | |
1178 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-9); | |
d8fdc620 LP |
1179 | if (r < 0) |
1180 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
1181 | ||
1182 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
1183 | } | |
1184 | ||
1185 | return 0; | |
1186 | } | |
1187 | ||
00d9ef85 LP |
1188 | static int manager_setup_user_lookup_fd(Manager *m) { |
1189 | int r; | |
1190 | ||
1191 | assert(m); | |
1192 | ||
1193 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
1194 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
1195 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
1196 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
1197 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
1198 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
1199 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
1200 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
1201 | * this purpose. | |
1202 | * | |
1203 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
1204 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
1205 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
1206 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
1207 | * | |
1208 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
1209 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
1210 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
1211 | ||
1212 | if (m->user_lookup_fds[0] < 0) { | |
1213 | ||
1214 | /* Free all secondary fields */ | |
1215 | safe_close_pair(m->user_lookup_fds); | |
5dcadb4c | 1216 | m->user_lookup_event_source = sd_event_source_disable_unref(m->user_lookup_event_source); |
00d9ef85 LP |
1217 | |
1218 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
1219 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
1220 | ||
28e7e934 | 1221 | (void) fd_increase_rxbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); |
00d9ef85 LP |
1222 | } |
1223 | ||
1224 | if (!m->user_lookup_event_source) { | |
1225 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
1226 | if (r < 0) | |
1227 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
1228 | ||
1229 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
1230 | * resolutions */ | |
67ae4e8d | 1231 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-11); |
00d9ef85 | 1232 | if (r < 0) |
5238e957 | 1233 | return log_error_errno(errno, "Failed to set priority of user lookup event source: %m"); |
00d9ef85 LP |
1234 | |
1235 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
1236 | } | |
1237 | ||
1238 | return 0; | |
1239 | } | |
1240 | ||
23a177ef | 1241 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 1242 | Unit *u; |
23a177ef LP |
1243 | unsigned n = 0; |
1244 | ||
1245 | assert(m); | |
1246 | ||
595ed347 MS |
1247 | while ((u = m->cleanup_queue)) { |
1248 | assert(u->in_cleanup_queue); | |
23a177ef | 1249 | |
595ed347 | 1250 | unit_free(u); |
23a177ef LP |
1251 | n++; |
1252 | } | |
1253 | ||
1254 | return n; | |
1255 | } | |
1256 | ||
6ac62d61 LP |
1257 | static unsigned manager_dispatch_release_resources_queue(Manager *m) { |
1258 | unsigned n = 0; | |
1259 | Unit *u; | |
1260 | ||
1261 | assert(m); | |
1262 | ||
1263 | while ((u = m->release_resources_queue)) { | |
1264 | assert(u->in_release_resources_queue); | |
1265 | ||
1266 | LIST_REMOVE(release_resources_queue, m->release_resources_queue, u); | |
1267 | u->in_release_resources_queue = false; | |
1268 | ||
1269 | n++; | |
1270 | ||
1271 | unit_release_resources(u); | |
1272 | } | |
1273 | ||
1274 | return n; | |
1275 | } | |
1276 | ||
eced69b3 | 1277 | enum { |
35b8ca3a | 1278 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
1279 | GC_OFFSET_UNSURE, /* No clue */ |
1280 | GC_OFFSET_GOOD, /* We still need this unit */ | |
1281 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
1282 | _GC_OFFSET_MAX | |
1283 | }; | |
1284 | ||
00d9ef85 | 1285 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
1286 | Unit *other; |
1287 | ||
1288 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
1289 | ||
1290 | /* Recursively mark referenced units as GOOD as well */ | |
15ed3c3a | 1291 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_REFERENCES) |
4892084f LN |
1292 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
1293 | unit_gc_mark_good(other, gc_marker); | |
1294 | } | |
1295 | ||
eced69b3 | 1296 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 1297 | Unit *other; |
eced69b3 | 1298 | bool is_bad; |
701cc384 LP |
1299 | |
1300 | assert(u); | |
1301 | ||
4c701096 YW |
1302 | if (IN_SET(u->gc_marker - gc_marker, |
1303 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1304 | return; |
1305 | ||
ac155bb8 | 1306 | if (u->in_cleanup_queue) |
701cc384 LP |
1307 | goto bad; |
1308 | ||
f2f725e5 | 1309 | if (!unit_may_gc(u)) |
701cc384 LP |
1310 | goto good; |
1311 | ||
ac155bb8 | 1312 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1313 | |
1314 | is_bad = true; | |
1315 | ||
15ed3c3a | 1316 | UNIT_FOREACH_DEPENDENCY(other, u, UNIT_ATOM_REFERENCED_BY) { |
701cc384 LP |
1317 | unit_gc_sweep(other, gc_marker); |
1318 | ||
ac155bb8 | 1319 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1320 | goto good; |
eced69b3 | 1321 | |
ac155bb8 | 1322 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1323 | is_bad = false; |
701cc384 LP |
1324 | } |
1325 | ||
ef3fc326 ZJS |
1326 | LIST_FOREACH(refs_by_target, ref, u->refs_by_target) { |
1327 | unit_gc_sweep(ref->source, gc_marker); | |
2641f02e | 1328 | |
ef3fc326 ZJS |
1329 | if (ref->source->gc_marker == gc_marker + GC_OFFSET_GOOD) |
1330 | goto good; | |
2641f02e | 1331 | |
ef3fc326 ZJS |
1332 | if (ref->source->gc_marker != gc_marker + GC_OFFSET_BAD) |
1333 | is_bad = false; | |
2641f02e | 1334 | } |
701cc384 | 1335 | |
eced69b3 LP |
1336 | if (is_bad) |
1337 | goto bad; | |
1338 | ||
1339 | /* We were unable to find anything out about this entry, so | |
1340 | * let's investigate it later */ | |
ac155bb8 | 1341 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1342 | unit_add_to_gc_queue(u); |
1343 | return; | |
1344 | ||
701cc384 | 1345 | bad: |
eced69b3 LP |
1346 | /* We definitely know that this one is not useful anymore, so |
1347 | * let's mark it for deletion */ | |
ac155bb8 | 1348 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1349 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1350 | return; |
1351 | ||
1352 | good: | |
4892084f | 1353 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1354 | } |
1355 | ||
c5a97ed1 LP |
1356 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1357 | unsigned n = 0, gc_marker; | |
595ed347 | 1358 | Unit *u; |
701cc384 LP |
1359 | |
1360 | assert(m); | |
1361 | ||
cf1265e1 | 1362 | /* log_debug("Running GC..."); */ |
701cc384 | 1363 | |
eced69b3 LP |
1364 | m->gc_marker += _GC_OFFSET_MAX; |
1365 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1366 | m->gc_marker = 1; |
701cc384 | 1367 | |
eced69b3 LP |
1368 | gc_marker = m->gc_marker; |
1369 | ||
c5a97ed1 | 1370 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1371 | assert(u->in_gc_queue); |
701cc384 | 1372 | |
595ed347 | 1373 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1374 | |
c5a97ed1 | 1375 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1376 | u->in_gc_queue = false; |
701cc384 LP |
1377 | |
1378 | n++; | |
1379 | ||
4c701096 YW |
1380 | if (IN_SET(u->gc_marker - gc_marker, |
1381 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1382 | if (u->id) |
f2341e0a | 1383 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1384 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1385 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1386 | } |
1387 | } | |
1388 | ||
701cc384 LP |
1389 | return n; |
1390 | } | |
1391 | ||
c5a97ed1 LP |
1392 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1393 | unsigned n = 0; | |
1394 | Job *j; | |
1395 | ||
1396 | assert(m); | |
1397 | ||
1398 | while ((j = m->gc_job_queue)) { | |
1399 | assert(j->in_gc_queue); | |
1400 | ||
1401 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1402 | j->in_gc_queue = false; | |
1403 | ||
1404 | n++; | |
1405 | ||
2ab3050f | 1406 | if (!job_may_gc(j)) |
c5a97ed1 LP |
1407 | continue; |
1408 | ||
1409 | log_unit_debug(j->unit, "Collecting job."); | |
1410 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1411 | } | |
1412 | ||
1413 | return n; | |
1414 | } | |
1415 | ||
7223d500 LB |
1416 | static int manager_ratelimit_requeue(sd_event_source *s, uint64_t usec, void *userdata) { |
1417 | Unit *u = userdata; | |
1418 | ||
1419 | assert(u); | |
1420 | assert(s == u->auto_start_stop_event_source); | |
1421 | ||
1422 | u->auto_start_stop_event_source = sd_event_source_unref(u->auto_start_stop_event_source); | |
1423 | ||
1424 | /* Re-queue to all queues, if the rate limit hit we might have been throttled on any of them. */ | |
1425 | unit_submit_to_stop_when_unneeded_queue(u); | |
1426 | unit_submit_to_start_when_upheld_queue(u); | |
1427 | unit_submit_to_stop_when_bound_queue(u); | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | static int manager_ratelimit_check_and_queue(Unit *u) { | |
1433 | int r; | |
1434 | ||
1435 | assert(u); | |
1436 | ||
1437 | if (ratelimit_below(&u->auto_start_stop_ratelimit)) | |
1438 | return 1; | |
1439 | ||
1440 | /* Already queued, no need to requeue */ | |
1441 | if (u->auto_start_stop_event_source) | |
1442 | return 0; | |
1443 | ||
1444 | r = sd_event_add_time( | |
1445 | u->manager->event, | |
1446 | &u->auto_start_stop_event_source, | |
1447 | CLOCK_MONOTONIC, | |
1448 | ratelimit_end(&u->auto_start_stop_ratelimit), | |
1449 | 0, | |
1450 | manager_ratelimit_requeue, | |
1451 | u); | |
1452 | if (r < 0) | |
1453 | return log_unit_error_errno(u, r, "Failed to queue timer on event loop: %m"); | |
1454 | ||
1455 | return 0; | |
1456 | } | |
1457 | ||
a3c1168a LP |
1458 | static unsigned manager_dispatch_stop_when_unneeded_queue(Manager *m) { |
1459 | unsigned n = 0; | |
1460 | Unit *u; | |
1461 | int r; | |
1462 | ||
1463 | assert(m); | |
1464 | ||
1465 | while ((u = m->stop_when_unneeded_queue)) { | |
1466 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
a3c1168a LP |
1467 | |
1468 | assert(u->in_stop_when_unneeded_queue); | |
1469 | LIST_REMOVE(stop_when_unneeded_queue, m->stop_when_unneeded_queue, u); | |
1470 | u->in_stop_when_unneeded_queue = false; | |
1471 | ||
1472 | n++; | |
1473 | ||
1474 | if (!unit_is_unneeded(u)) | |
1475 | continue; | |
1476 | ||
1477 | log_unit_debug(u, "Unit is not needed anymore."); | |
1478 | ||
1479 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1480 | * service being unnecessary after a while. */ | |
1481 | ||
7223d500 LB |
1482 | r = manager_ratelimit_check_and_queue(u); |
1483 | if (r <= 0) { | |
1484 | log_unit_warning(u, | |
1485 | "Unit not needed anymore, but not stopping since we tried this too often recently.%s", | |
1486 | r == 0 ? " Will retry later." : ""); | |
a3c1168a LP |
1487 | continue; |
1488 | } | |
1489 | ||
1490 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
50cbaba4 | 1491 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, NULL, &error, NULL); |
a3c1168a LP |
1492 | if (r < 0) |
1493 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1494 | } | |
1495 | ||
1496 | return n; | |
1497 | } | |
1498 | ||
0bc488c9 LP |
1499 | static unsigned manager_dispatch_start_when_upheld_queue(Manager *m) { |
1500 | unsigned n = 0; | |
1501 | Unit *u; | |
1502 | int r; | |
1503 | ||
1504 | assert(m); | |
1505 | ||
1506 | while ((u = m->start_when_upheld_queue)) { | |
1507 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1508 | Unit *culprit = NULL; | |
1509 | ||
1510 | assert(u->in_start_when_upheld_queue); | |
1511 | LIST_REMOVE(start_when_upheld_queue, m->start_when_upheld_queue, u); | |
1512 | u->in_start_when_upheld_queue = false; | |
1513 | ||
1514 | n++; | |
1515 | ||
1516 | if (!unit_is_upheld_by_active(u, &culprit)) | |
1517 | continue; | |
1518 | ||
1519 | log_unit_debug(u, "Unit is started because upheld by active unit %s.", culprit->id); | |
1520 | ||
1521 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1522 | * service being unnecessary after a while. */ | |
1523 | ||
7223d500 LB |
1524 | r = manager_ratelimit_check_and_queue(u); |
1525 | if (r <= 0) { | |
1526 | log_unit_warning(u, | |
1527 | "Unit needs to be started because active unit %s upholds it, but not starting since we tried this too often recently.%s", | |
1528 | culprit->id, | |
1529 | r == 0 ? " Will retry later." : ""); | |
0bc488c9 LP |
1530 | continue; |
1531 | } | |
1532 | ||
1533 | r = manager_add_job(u->manager, JOB_START, u, JOB_FAIL, NULL, &error, NULL); | |
1534 | if (r < 0) | |
1535 | log_unit_warning_errno(u, r, "Failed to enqueue start job, ignoring: %s", bus_error_message(&error, r)); | |
1536 | } | |
1537 | ||
1538 | return n; | |
1539 | } | |
1540 | ||
56c59592 LP |
1541 | static unsigned manager_dispatch_stop_when_bound_queue(Manager *m) { |
1542 | unsigned n = 0; | |
1543 | Unit *u; | |
1544 | int r; | |
1545 | ||
1546 | assert(m); | |
1547 | ||
1548 | while ((u = m->stop_when_bound_queue)) { | |
1549 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1550 | Unit *culprit = NULL; | |
1551 | ||
1552 | assert(u->in_stop_when_bound_queue); | |
1553 | LIST_REMOVE(stop_when_bound_queue, m->stop_when_bound_queue, u); | |
1554 | u->in_stop_when_bound_queue = false; | |
1555 | ||
1556 | n++; | |
1557 | ||
1558 | if (!unit_is_bound_by_inactive(u, &culprit)) | |
1559 | continue; | |
1560 | ||
1561 | log_unit_debug(u, "Unit is stopped because bound to inactive unit %s.", culprit->id); | |
1562 | ||
1563 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1564 | * service being unnecessary after a while. */ | |
1565 | ||
7223d500 LB |
1566 | r = manager_ratelimit_check_and_queue(u); |
1567 | if (r <= 0) { | |
1568 | log_unit_warning(u, | |
1569 | "Unit needs to be stopped because it is bound to inactive unit %s it, but not stopping since we tried this too often recently.%s", | |
1570 | culprit->id, | |
1571 | r == 0 ? " Will retry later." : ""); | |
56c59592 LP |
1572 | continue; |
1573 | } | |
1574 | ||
1575 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_REPLACE, NULL, &error, NULL); | |
1576 | if (r < 0) | |
1577 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1578 | } | |
1579 | ||
1580 | return n; | |
1581 | } | |
1582 | ||
a16e1123 | 1583 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1584 | Unit *u; |
60918275 LP |
1585 | |
1586 | assert(m); | |
1587 | ||
87f0e418 LP |
1588 | while ((u = hashmap_first(m->units))) |
1589 | unit_free(u); | |
964e0949 LP |
1590 | |
1591 | manager_dispatch_cleanup_queue(m); | |
1592 | ||
1593 | assert(!m->load_queue); | |
da8e1782 | 1594 | assert(prioq_isempty(m->run_queue)); |
964e0949 LP |
1595 | assert(!m->dbus_unit_queue); |
1596 | assert(!m->dbus_job_queue); | |
1597 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1598 | assert(!m->gc_unit_queue); |
1599 | assert(!m->gc_job_queue); | |
13e72103 MK |
1600 | assert(!m->cgroup_realize_queue); |
1601 | assert(!m->cgroup_empty_queue); | |
1602 | assert(!m->cgroup_oom_queue); | |
1603 | assert(!m->target_deps_queue); | |
a3c1168a | 1604 | assert(!m->stop_when_unneeded_queue); |
0bc488c9 | 1605 | assert(!m->start_when_upheld_queue); |
56c59592 | 1606 | assert(!m->stop_when_bound_queue); |
cb3c6aec | 1607 | assert(!m->release_resources_queue); |
964e0949 | 1608 | |
964e0949 LP |
1609 | assert(hashmap_isempty(m->jobs)); |
1610 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1611 | |
1612 | m->n_on_console = 0; | |
1613 | m->n_running_jobs = 0; | |
1e75824c MK |
1614 | m->n_installed_jobs = 0; |
1615 | m->n_failed_jobs = 0; | |
a16e1123 LP |
1616 | } |
1617 | ||
06d8d842 | 1618 | Manager* manager_free(Manager *m) { |
06d8d842 ZJS |
1619 | if (!m) |
1620 | return NULL; | |
a16e1123 LP |
1621 | |
1622 | manager_clear_jobs_and_units(m); | |
23a177ef | 1623 | |
24b45970 | 1624 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) |
7824bbeb LP |
1625 | if (unit_vtable[c]->shutdown) |
1626 | unit_vtable[c]->shutdown(m); | |
1627 | ||
86036b26 | 1628 | /* Keep the cgroup hierarchy in place except when we know we are going down for good */ |
13ffc607 | 1629 | manager_shutdown_cgroup(m, /* delete= */ IN_SET(m->objective, MANAGER_EXIT, MANAGER_REBOOT, MANAGER_POWEROFF, MANAGER_HALT, MANAGER_KEXEC)); |
8e274523 | 1630 | |
07a78643 | 1631 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1632 | |
5e8d1c9a | 1633 | bus_done(m); |
19d22d43 | 1634 | manager_varlink_done(m); |
ea430986 | 1635 | |
e76506b7 DDM |
1636 | exec_shared_runtime_vacuum(m); |
1637 | hashmap_free(m->exec_shared_runtime_by_id); | |
e8a565cb | 1638 | |
29206d46 LP |
1639 | dynamic_user_vacuum(m, false); |
1640 | hashmap_free(m->dynamic_users); | |
1641 | ||
87f0e418 | 1642 | hashmap_free(m->units); |
4b58153d | 1643 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1644 | hashmap_free(m->jobs); |
62a76913 | 1645 | hashmap_free(m->watch_pids); |
05e343b7 | 1646 | hashmap_free(m->watch_bus); |
9152c765 | 1647 | |
da8e1782 MO |
1648 | prioq_free(m->run_queue); |
1649 | ||
95ae05c0 | 1650 | set_free(m->startup_units); |
f755e3b7 LP |
1651 | set_free(m->failed_units); |
1652 | ||
718db961 | 1653 | sd_event_source_unref(m->signal_event_source); |
575b300b | 1654 | sd_event_source_unref(m->sigchld_event_source); |
718db961 | 1655 | sd_event_source_unref(m->notify_event_source); |
d8fdc620 | 1656 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 | 1657 | sd_event_source_unref(m->time_change_event_source); |
bbf5fd8e | 1658 | sd_event_source_unref(m->timezone_change_event_source); |
718db961 | 1659 | sd_event_source_unref(m->jobs_in_progress_event_source); |
752b5905 | 1660 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1661 | sd_event_source_unref(m->user_lookup_event_source); |
29e6b0c1 | 1662 | sd_event_source_unref(m->memory_pressure_event_source); |
718db961 | 1663 | |
03e334a1 LP |
1664 | safe_close(m->signal_fd); |
1665 | safe_close(m->notify_fd); | |
d8fdc620 | 1666 | safe_close(m->cgroups_agent_fd); |
00d9ef85 | 1667 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1668 | |
e46b13c8 ZJS |
1669 | manager_close_ask_password(m); |
1670 | ||
718db961 LP |
1671 | manager_close_idle_pipe(m); |
1672 | ||
1673 | sd_event_unref(m->event); | |
60918275 | 1674 | |
c952c6ec LP |
1675 | free(m->notify_socket); |
1676 | ||
84e3543e | 1677 | lookup_paths_free(&m->lookup_paths); |
1ad6e8b3 LP |
1678 | strv_free(m->transient_environment); |
1679 | strv_free(m->client_environment); | |
036643a2 | 1680 | |
4ad49000 | 1681 | hashmap_free(m->cgroup_unit); |
e8630e69 | 1682 | manager_free_unit_name_maps(m); |
33be102a | 1683 | |
664f88a7 LP |
1684 | free(m->switch_root); |
1685 | free(m->switch_root_init); | |
1686 | ||
aa5ae971 ŁS |
1687 | free(m->default_smack_process_label); |
1688 | ||
31ce987c | 1689 | rlimit_free_all(m->rlimit); |
c93ff2e9 | 1690 | |
a57f7e2c LP |
1691 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1692 | hashmap_free(m->units_requiring_mounts_for); | |
1693 | ||
00d9ef85 LP |
1694 | hashmap_free(m->uid_refs); |
1695 | hashmap_free(m->gid_refs); | |
1696 | ||
24b45970 | 1697 | for (ExecDirectoryType dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a | 1698 | m->prefix[dt] = mfree(m->prefix[dt]); |
2ad591a3 LP |
1699 | free(m->received_credentials_directory); |
1700 | free(m->received_encrypted_credentials_directory); | |
35aba85a | 1701 | |
aff3a9e1 LB |
1702 | free(m->watchdog_pretimeout_governor); |
1703 | free(m->watchdog_pretimeout_governor_overridden); | |
1704 | ||
b1994387 ILG |
1705 | #if BPF_FRAMEWORK |
1706 | lsm_bpf_destroy(m->restrict_fs); | |
1707 | #endif | |
1708 | ||
6b430fdb | 1709 | return mfree(m); |
60918275 LP |
1710 | } |
1711 | ||
04eb582a | 1712 | static void manager_enumerate_perpetual(Manager *m) { |
04eb582a LP |
1713 | assert(m); |
1714 | ||
1545051c | 1715 | if (FLAGS_SET(m->test_run_flags, MANAGER_TEST_RUN_MINIMAL)) |
b1d5246d ZJS |
1716 | return; |
1717 | ||
04eb582a | 1718 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1719 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
04eb582a LP |
1720 | if (!unit_type_supported(c)) { |
1721 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); | |
1722 | continue; | |
1723 | } | |
1724 | ||
1725 | if (unit_vtable[c]->enumerate_perpetual) | |
1726 | unit_vtable[c]->enumerate_perpetual(m); | |
1727 | } | |
1728 | } | |
1729 | ||
a1113e08 | 1730 | static void manager_enumerate(Manager *m) { |
f50e0a01 LP |
1731 | assert(m); |
1732 | ||
1545051c | 1733 | if (FLAGS_SET(m->test_run_flags, MANAGER_TEST_RUN_MINIMAL)) |
b1d5246d ZJS |
1734 | return; |
1735 | ||
04eb582a | 1736 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1737 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1738 | if (!unit_type_supported(c)) { |
03afec3c | 1739 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1740 | continue; |
a57f7e2c | 1741 | } |
f50e0a01 | 1742 | |
94b01dae ZJS |
1743 | if (unit_vtable[c]->enumerate) |
1744 | unit_vtable[c]->enumerate(m); | |
0faacd47 LP |
1745 | } |
1746 | ||
f50e0a01 | 1747 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1748 | } |
1749 | ||
007c6337 | 1750 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1751 | Unit *u; |
1752 | char *k; | |
007c6337 | 1753 | int r; |
a16e1123 LP |
1754 | |
1755 | assert(m); | |
f50e0a01 | 1756 | |
28e5e1e9 | 1757 | log_debug("Invoking unit coldplug() handlers%s", special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
f0831ed2 LP |
1758 | |
1759 | /* Let's place the units back into their deserialized state */ | |
90e74a66 | 1760 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f50e0a01 LP |
1761 | |
1762 | /* ignore aliases */ | |
ac155bb8 | 1763 | if (u->id != k) |
f50e0a01 LP |
1764 | continue; |
1765 | ||
007c6337 LP |
1766 | r = unit_coldplug(u); |
1767 | if (r < 0) | |
1768 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1769 | } |
a16e1123 LP |
1770 | } |
1771 | ||
f0831ed2 | 1772 | static void manager_catchup(Manager *m) { |
f0831ed2 LP |
1773 | Unit *u; |
1774 | char *k; | |
1775 | ||
1776 | assert(m); | |
1777 | ||
28e5e1e9 | 1778 | log_debug("Invoking unit catchup() handlers%s", special_glyph(SPECIAL_GLYPH_ELLIPSIS)); |
f0831ed2 LP |
1779 | |
1780 | /* Let's catch up on any state changes that happened while we were reloading/reexecing */ | |
90e74a66 | 1781 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f0831ed2 LP |
1782 | |
1783 | /* ignore aliases */ | |
1784 | if (u->id != k) | |
1785 | continue; | |
1786 | ||
1787 | unit_catchup(u); | |
1788 | } | |
1789 | } | |
1790 | ||
9ff1a6f1 | 1791 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9ff1a6f1 | 1792 | Unit *u; |
9588bc32 LP |
1793 | |
1794 | assert(m); | |
1795 | ||
90e74a66 | 1796 | HASHMAP_FOREACH(u, m->units) { |
9588bc32 LP |
1797 | |
1798 | if (fdset_size(fds) <= 0) | |
1799 | break; | |
1800 | ||
9ff1a6f1 LP |
1801 | if (!UNIT_VTABLE(u)->distribute_fds) |
1802 | continue; | |
9588bc32 | 1803 | |
9ff1a6f1 LP |
1804 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1805 | } | |
9588bc32 LP |
1806 | } |
1807 | ||
2b680534 | 1808 | static bool manager_dbus_is_running(Manager *m, bool deserialized) { |
8559b3b7 LP |
1809 | Unit *u; |
1810 | ||
1811 | assert(m); | |
1812 | ||
1813 | /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket | |
1814 | * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit | |
1815 | * rather than the current one. */ | |
1816 | ||
638cece4 | 1817 | if (MANAGER_IS_TEST_RUN(m)) |
8559b3b7 LP |
1818 | return false; |
1819 | ||
8559b3b7 LP |
1820 | u = manager_get_unit(m, SPECIAL_DBUS_SOCKET); |
1821 | if (!u) | |
1822 | return false; | |
1823 | if ((deserialized ? SOCKET(u)->deserialized_state : SOCKET(u)->state) != SOCKET_RUNNING) | |
1824 | return false; | |
1825 | ||
1826 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1827 | if (!u) | |
1828 | return false; | |
845824ac | 1829 | if (!IN_SET((deserialized ? SERVICE(u)->deserialized_state : SERVICE(u)->state), |
1830 | SERVICE_RUNNING, | |
1831 | SERVICE_RELOAD, | |
1832 | SERVICE_RELOAD_NOTIFY, | |
1833 | SERVICE_RELOAD_SIGNAL)) | |
8559b3b7 LP |
1834 | return false; |
1835 | ||
1836 | return true; | |
1837 | } | |
1838 | ||
9d4c195c LP |
1839 | static void manager_setup_bus(Manager *m) { |
1840 | assert(m); | |
1841 | ||
1842 | /* Let's set up our private bus connection now, unconditionally */ | |
1843 | (void) bus_init_private(m); | |
1844 | ||
1845 | /* If we are in --user mode also connect to the system bus now */ | |
1846 | if (MANAGER_IS_USER(m)) | |
1847 | (void) bus_init_system(m); | |
1848 | ||
1849 | /* Let's connect to the bus now, but only if the unit is supposed to be up */ | |
2b680534 | 1850 | if (manager_dbus_is_running(m, MANAGER_IS_RELOADING(m))) { |
9d4c195c LP |
1851 | (void) bus_init_api(m); |
1852 | ||
1853 | if (MANAGER_IS_SYSTEM(m)) | |
1854 | (void) bus_init_system(m); | |
1855 | } | |
1856 | } | |
1857 | ||
159f1e76 LP |
1858 | static void manager_preset_all(Manager *m) { |
1859 | int r; | |
1860 | ||
1861 | assert(m); | |
1862 | ||
1863 | if (m->first_boot <= 0) | |
1864 | return; | |
1865 | ||
1866 | if (!MANAGER_IS_SYSTEM(m)) | |
1867 | return; | |
1868 | ||
638cece4 | 1869 | if (MANAGER_IS_TEST_RUN(m)) |
159f1e76 LP |
1870 | return; |
1871 | ||
1872 | /* If this is the first boot, and we are in the host system, then preset everything */ | |
93651582 JL |
1873 | UnitFilePresetMode mode = FIRST_BOOT_FULL_PRESET ? UNIT_FILE_PRESET_FULL : UNIT_FILE_PRESET_ENABLE_ONLY; |
1874 | ||
4870133b | 1875 | r = unit_file_preset_all(RUNTIME_SCOPE_SYSTEM, 0, NULL, mode, NULL, 0); |
159f1e76 LP |
1876 | if (r < 0) |
1877 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1878 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
1879 | else | |
1880 | log_info("Populated /etc with preset unit settings."); | |
1881 | } | |
1882 | ||
5ce5e1ad LP |
1883 | static void manager_ready(Manager *m) { |
1884 | assert(m); | |
1885 | ||
1886 | /* After having loaded everything, do the final round of catching up with what might have changed */ | |
1887 | ||
1888 | m->objective = MANAGER_OK; /* Tell everyone we are up now */ | |
1889 | ||
1890 | /* It might be safe to log to the journal now and connect to dbus */ | |
1891 | manager_recheck_journal(m); | |
1892 | manager_recheck_dbus(m); | |
1893 | ||
5ce5e1ad LP |
1894 | /* Let's finally catch up with any changes that took place while we were reloading/reexecing */ |
1895 | manager_catchup(m); | |
c6e892bc | 1896 | |
15b9243c | 1897 | /* Create a file which will indicate when the manager started loading units the last time. */ |
4b3ad81b LB |
1898 | if (MANAGER_IS_SYSTEM(m)) |
1899 | (void) touch_file("/run/systemd/systemd-units-load", false, | |
1900 | m->timestamps[MANAGER_TIMESTAMP_UNITS_LOAD].realtime ?: now(CLOCK_REALTIME), | |
1901 | UID_INVALID, GID_INVALID, 0444); | |
5ce5e1ad LP |
1902 | } |
1903 | ||
a01ba4b2 | 1904 | Manager* manager_reloading_start(Manager *m) { |
d147e2b6 | 1905 | m->n_reloading++; |
49fbe940 | 1906 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_UNITS_LOAD); |
d147e2b6 ZJS |
1907 | return m; |
1908 | } | |
49fbe940 | 1909 | |
a01ba4b2 | 1910 | void manager_reloading_stopp(Manager **m) { |
d147e2b6 ZJS |
1911 | if (*m) { |
1912 | assert((*m)->n_reloading > 0); | |
1913 | (*m)->n_reloading--; | |
1914 | } | |
1915 | } | |
1916 | ||
2a7cf953 | 1917 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds, const char *root) { |
17f01ace | 1918 | int r; |
a16e1123 LP |
1919 | |
1920 | assert(m); | |
1921 | ||
a1f31f47 ZJS |
1922 | /* If we are running in test mode, we still want to run the generators, |
1923 | * but we should not touch the real generator directories. */ | |
4870133b | 1924 | r = lookup_paths_init_or_warn(&m->lookup_paths, m->runtime_scope, |
99aad9a2 ZJS |
1925 | MANAGER_IS_TEST_RUN(m) ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
1926 | root); | |
e801700e | 1927 | if (r < 0) |
99aad9a2 | 1928 | return r; |
5a1e9937 | 1929 | |
d4ee7bd8 | 1930 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START)); |
eb523bfb LP |
1931 | r = manager_run_environment_generators(m); |
1932 | if (r >= 0) | |
1933 | r = manager_run_generators(m); | |
d4ee7bd8 | 1934 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH)); |
07719a21 LP |
1935 | if (r < 0) |
1936 | return r; | |
1937 | ||
159f1e76 | 1938 | manager_preset_all(m); |
572986ca | 1939 | |
581fef8d | 1940 | lookup_paths_log(&m->lookup_paths); |
572986ca | 1941 | |
4df7d537 ZJS |
1942 | { |
1943 | /* This block is (optionally) done with the reloading counter bumped */ | |
d7ac0952 | 1944 | _unused_ _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
4df7d537 | 1945 | |
45f540a2 ZJS |
1946 | /* Make sure we don't have a left-over from a previous run */ |
1947 | if (!serialization) | |
1948 | (void) rm_rf(m->lookup_paths.transient, 0); | |
1949 | ||
4df7d537 ZJS |
1950 | /* If we will deserialize make sure that during enumeration this is already known, so we increase the |
1951 | * counter here already */ | |
1952 | if (serialization) | |
1953 | reloading = manager_reloading_start(m); | |
1954 | ||
1955 | /* First, enumerate what we can from all config files */ | |
1956 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START)); | |
1957 | manager_enumerate_perpetual(m); | |
1958 | manager_enumerate(m); | |
1959 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH)); | |
1960 | ||
1961 | /* Second, deserialize if there is something to deserialize */ | |
1962 | if (serialization) { | |
1963 | r = manager_deserialize(m, serialization, fds); | |
1964 | if (r < 0) | |
1965 | return log_error_errno(r, "Deserialization failed: %m"); | |
1966 | } | |
01e10de3 | 1967 | |
4df7d537 ZJS |
1968 | /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass |
1969 | * some file descriptors to us pre-initialized. This enables socket-based activation of entire | |
1970 | * containers. */ | |
1971 | manager_distribute_fds(m, fds); | |
d86f9d52 | 1972 | |
4df7d537 ZJS |
1973 | /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */ |
1974 | r = manager_setup_notify(m); | |
1975 | if (r < 0) | |
1976 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1977 | return r; | |
d8fdc620 | 1978 | |
4df7d537 ZJS |
1979 | r = manager_setup_cgroups_agent(m); |
1980 | if (r < 0) | |
1981 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1982 | return r; | |
00d9ef85 | 1983 | |
4df7d537 ZJS |
1984 | r = manager_setup_user_lookup_fd(m); |
1985 | if (r < 0) | |
1986 | /* This shouldn't fail, except if things are really broken. */ | |
1987 | return r; | |
8559b3b7 | 1988 | |
4df7d537 ZJS |
1989 | /* Connect to the bus if we are good for it */ |
1990 | manager_setup_bus(m); | |
e3dd987c | 1991 | |
5238e957 | 1992 | /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */ |
4df7d537 ZJS |
1993 | r = bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); |
1994 | if (r < 0) | |
1995 | log_warning_errno(r, "Failed to deserialized tracked clients, ignoring: %m"); | |
1996 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
a16e1123 | 1997 | |
19d22d43 LP |
1998 | r = manager_varlink_init(m); |
1999 | if (r < 0) | |
064a5c14 | 2000 | log_warning_errno(r, "Failed to set up Varlink, ignoring: %m"); |
19d22d43 | 2001 | |
4df7d537 ZJS |
2002 | /* Third, fire things up! */ |
2003 | manager_coldplug(m); | |
3ad2afb6 | 2004 | |
4df7d537 ZJS |
2005 | /* Clean up runtime objects */ |
2006 | manager_vacuum(m); | |
71445ae7 | 2007 | |
4df7d537 ZJS |
2008 | if (serialization) |
2009 | /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the | |
2010 | * reload is finished */ | |
2011 | m->send_reloading_done = true; | |
9f611ad8 LP |
2012 | } |
2013 | ||
5ce5e1ad | 2014 | manager_ready(m); |
f0831ed2 | 2015 | |
d35fe8c0 FB |
2016 | manager_set_switching_root(m, false); |
2017 | ||
17f01ace | 2018 | return 0; |
f50e0a01 LP |
2019 | } |
2020 | ||
50cbaba4 LP |
2021 | int manager_add_job( |
2022 | Manager *m, | |
2023 | JobType type, | |
2024 | Unit *unit, | |
2025 | JobMode mode, | |
2026 | Set *affected_jobs, | |
2027 | sd_bus_error *error, | |
2028 | Job **ret) { | |
2029 | ||
c7e3eb5d | 2030 | _cleanup_(transaction_abort_and_freep) Transaction *tr = NULL; |
50cbaba4 | 2031 | int r; |
e5b5ae50 LP |
2032 | |
2033 | assert(m); | |
2034 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 2035 | assert(unit); |
e5b5ae50 | 2036 | assert(mode < _JOB_MODE_MAX); |
60918275 | 2037 | |
7358dc02 | 2038 | if (mode == JOB_ISOLATE && type != JOB_START) |
1b09b81c | 2039 | return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); |
c497c7a9 | 2040 | |
7358dc02 | 2041 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1b09b81c | 2042 | return sd_bus_error_set(error, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
2528a7a6 | 2043 | |
1f0f9f21 | 2044 | if (mode == JOB_TRIGGERING && type != JOB_STOP) |
1b09b81c | 2045 | return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "--job-mode=triggering is only valid for stop."); |
1f0f9f21 | 2046 | |
f2341e0a | 2047 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 2048 | |
c6497ccb | 2049 | type = job_type_collapse(type, unit); |
e0209d83 | 2050 | |
23ade460 | 2051 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
2052 | if (!tr) |
2053 | return -ENOMEM; | |
11dd41ce | 2054 | |
b0904249 LP |
2055 | r = transaction_add_job_and_dependencies( |
2056 | tr, | |
2057 | type, | |
2058 | unit, | |
2059 | /* by= */ NULL, | |
2060 | TRANSACTION_MATTERS | | |
2061 | (IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS) ? TRANSACTION_IGNORE_REQUIREMENTS : 0) | | |
2062 | (mode == JOB_IGNORE_DEPENDENCIES ? TRANSACTION_IGNORE_ORDER : 0), | |
2063 | error); | |
7527cb52 | 2064 | if (r < 0) |
c7e3eb5d | 2065 | return r; |
c497c7a9 | 2066 | |
7527cb52 MS |
2067 | if (mode == JOB_ISOLATE) { |
2068 | r = transaction_add_isolate_jobs(tr, m); | |
2069 | if (r < 0) | |
c7e3eb5d | 2070 | return r; |
7527cb52 MS |
2071 | } |
2072 | ||
1f0f9f21 KK |
2073 | if (mode == JOB_TRIGGERING) { |
2074 | r = transaction_add_triggering_jobs(tr, unit); | |
2075 | if (r < 0) | |
c7e3eb5d | 2076 | return r; |
1f0f9f21 KK |
2077 | } |
2078 | ||
50cbaba4 | 2079 | r = transaction_activate(tr, m, mode, affected_jobs, error); |
7527cb52 | 2080 | if (r < 0) |
c7e3eb5d | 2081 | return r; |
e5b5ae50 | 2082 | |
f2341e0a | 2083 | log_unit_debug(unit, |
66870f90 ZJS |
2084 | "Enqueued job %s/%s as %u", unit->id, |
2085 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 2086 | |
50cbaba4 LP |
2087 | if (ret) |
2088 | *ret = tr->anchor_job; | |
60918275 | 2089 | |
c7e3eb5d | 2090 | tr = transaction_free(tr); |
e5b5ae50 LP |
2091 | return 0; |
2092 | } | |
60918275 | 2093 | |
50cbaba4 | 2094 | 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 | 2095 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
2096 | int r; |
2097 | ||
2098 | assert(m); | |
2099 | assert(type < _JOB_TYPE_MAX); | |
2100 | assert(name); | |
2101 | assert(mode < _JOB_MODE_MAX); | |
2102 | ||
c3090674 LP |
2103 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
2104 | if (r < 0) | |
28247076 | 2105 | return r; |
4440b27d | 2106 | assert(unit); |
28247076 | 2107 | |
50cbaba4 | 2108 | return manager_add_job(m, type, unit, mode, affected_jobs, e, ret); |
53f18416 LP |
2109 | } |
2110 | ||
50cbaba4 | 2111 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Set *affected_jobs, Job **ret) { |
4afd3348 | 2112 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
2113 | int r; |
2114 | ||
2115 | assert(m); | |
2116 | assert(type < _JOB_TYPE_MAX); | |
2117 | assert(name); | |
2118 | assert(mode < _JOB_MODE_MAX); | |
2119 | ||
50cbaba4 | 2120 | r = manager_add_job_by_name(m, type, name, mode, affected_jobs, &error, ret); |
53f18416 LP |
2121 | if (r < 0) |
2122 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
2123 | ||
2124 | return r; | |
28247076 LP |
2125 | } |
2126 | ||
15d167f8 JW |
2127 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
2128 | int r; | |
32620826 | 2129 | _cleanup_(transaction_abort_and_freep) Transaction *tr = NULL; |
15d167f8 JW |
2130 | |
2131 | assert(m); | |
2132 | assert(unit); | |
2133 | assert(mode < _JOB_MODE_MAX); | |
2134 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
2135 | ||
2136 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
2137 | if (!tr) | |
2138 | return -ENOMEM; | |
2139 | ||
2140 | /* We need an anchor job */ | |
b0904249 | 2141 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, TRANSACTION_IGNORE_REQUIREMENTS|TRANSACTION_IGNORE_ORDER, e); |
15d167f8 | 2142 | if (r < 0) |
32620826 | 2143 | return r; |
15d167f8 JW |
2144 | |
2145 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
b0904249 LP |
2146 | transaction_add_propagate_reload_jobs( |
2147 | tr, | |
2148 | unit, | |
2149 | tr->anchor_job, | |
3044510d | 2150 | mode == JOB_IGNORE_DEPENDENCIES ? TRANSACTION_IGNORE_ORDER : 0); |
15d167f8 | 2151 | |
50cbaba4 | 2152 | r = transaction_activate(tr, m, mode, NULL, e); |
15d167f8 | 2153 | if (r < 0) |
32620826 | 2154 | return r; |
15d167f8 | 2155 | |
32620826 | 2156 | tr = transaction_free(tr); |
15d167f8 | 2157 | return 0; |
15d167f8 JW |
2158 | } |
2159 | ||
60918275 LP |
2160 | Job *manager_get_job(Manager *m, uint32_t id) { |
2161 | assert(m); | |
2162 | ||
2163 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
2164 | } | |
2165 | ||
87f0e418 | 2166 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
2167 | assert(m); |
2168 | assert(name); | |
2169 | ||
87f0e418 | 2170 | return hashmap_get(m->units, name); |
60918275 LP |
2171 | } |
2172 | ||
19496554 MS |
2173 | static int manager_dispatch_target_deps_queue(Manager *m) { |
2174 | Unit *u; | |
19496554 MS |
2175 | int r = 0; |
2176 | ||
19496554 MS |
2177 | assert(m); |
2178 | ||
2179 | while ((u = m->target_deps_queue)) { | |
15ed3c3a LP |
2180 | _cleanup_free_ Unit **targets = NULL; |
2181 | int n_targets; | |
2182 | ||
19496554 MS |
2183 | assert(u->in_target_deps_queue); |
2184 | ||
2185 | LIST_REMOVE(target_deps_queue, u->manager->target_deps_queue, u); | |
2186 | u->in_target_deps_queue = false; | |
2187 | ||
15ed3c3a LP |
2188 | /* Take an "atomic" snapshot of dependencies here, as the call below will likely modify the |
2189 | * dependencies, and we can't have it that hash tables we iterate through are modified while | |
2190 | * we are iterating through them. */ | |
2191 | n_targets = unit_get_dependency_array(u, UNIT_ATOM_DEFAULT_TARGET_DEPENDENCIES, &targets); | |
2192 | if (n_targets < 0) | |
2193 | return n_targets; | |
19496554 | 2194 | |
15ed3c3a LP |
2195 | for (int i = 0; i < n_targets; i++) { |
2196 | r = unit_add_default_target_dependency(u, targets[i]); | |
2197 | if (r < 0) | |
2198 | return r; | |
19496554 MS |
2199 | } |
2200 | } | |
2201 | ||
2202 | return r; | |
2203 | } | |
2204 | ||
c1e1601e | 2205 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 2206 | Unit *u; |
c1e1601e | 2207 | unsigned n = 0; |
60918275 LP |
2208 | |
2209 | assert(m); | |
2210 | ||
223dabab LP |
2211 | /* Make sure we are not run recursively */ |
2212 | if (m->dispatching_load_queue) | |
c1e1601e | 2213 | return 0; |
223dabab LP |
2214 | |
2215 | m->dispatching_load_queue = true; | |
2216 | ||
87f0e418 | 2217 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
2218 | * tries to load its data until the queue is empty */ |
2219 | ||
595ed347 MS |
2220 | while ((u = m->load_queue)) { |
2221 | assert(u->in_load_queue); | |
034c6ed7 | 2222 | |
595ed347 | 2223 | unit_load(u); |
c1e1601e | 2224 | n++; |
60918275 LP |
2225 | } |
2226 | ||
223dabab | 2227 | m->dispatching_load_queue = false; |
19496554 MS |
2228 | |
2229 | /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about | |
2230 | * should be loaded and have aliases resolved */ | |
2231 | (void) manager_dispatch_target_deps_queue(m); | |
2232 | ||
c1e1601e | 2233 | return n; |
60918275 LP |
2234 | } |
2235 | ||
81be2388 | 2236 | bool manager_unit_cache_should_retry_load(Unit *u) { |
cda66772 LB |
2237 | assert(u); |
2238 | ||
81be2388 ZJS |
2239 | /* Automatic reloading from disk only applies to units which were not found sometime in the past, and |
2240 | * the not-found stub is kept pinned in the unit graph by dependencies. For units that were | |
2241 | * previously loaded, we don't do automatic reloading, and daemon-reload is necessary to update. */ | |
cda66772 LB |
2242 | if (u->load_state != UNIT_NOT_FOUND) |
2243 | return false; | |
2244 | ||
81be2388 ZJS |
2245 | /* The cache has been updated since the last time we tried to load the unit. There might be new |
2246 | * fragment paths to read. */ | |
c2911d48 | 2247 | if (u->manager->unit_cache_timestamp_hash != u->fragment_not_found_timestamp_hash) |
cda66772 | 2248 | return true; |
d904afc7 | 2249 | |
81be2388 | 2250 | /* The cache needs to be updated because there are modifications on disk. */ |
c2911d48 | 2251 | return !lookup_paths_timestamp_hash_same(&u->manager->lookup_paths, u->manager->unit_cache_timestamp_hash, NULL); |
d904afc7 LB |
2252 | } |
2253 | ||
c2756a68 LP |
2254 | int manager_load_unit_prepare( |
2255 | Manager *m, | |
2256 | const char *name, | |
2257 | const char *path, | |
718db961 | 2258 | sd_bus_error *e, |
4b6a2b3f | 2259 | Unit **ret) { |
c2756a68 | 2260 | |
4b6a2b3f | 2261 | _cleanup_(unit_freep) Unit *cleanup_unit = NULL; |
a99626c1 | 2262 | _cleanup_free_ char *nbuf = NULL; |
60918275 LP |
2263 | int r; |
2264 | ||
2265 | assert(m); | |
4b6a2b3f | 2266 | assert(ret); |
a99626c1 | 2267 | assert(name || path); |
60918275 | 2268 | |
526e3cbb | 2269 | /* This will prepare the unit for loading, but not actually load anything from disk. */ |
0301abf4 | 2270 | |
526e3cbb | 2271 | if (path && !path_is_absolute(path)) |
718db961 | 2272 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); |
9e2f7c11 | 2273 | |
08f46856 | 2274 | if (!name) { |
a99626c1 LP |
2275 | r = path_extract_filename(path, &nbuf); |
2276 | if (r < 0) | |
2277 | return r; | |
2278 | if (r == O_DIRECTORY) | |
2279 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path '%s' refers to directory, refusing.", path); | |
2280 | ||
2281 | name = nbuf; | |
08f46856 | 2282 | } |
9e2f7c11 | 2283 | |
4b6a2b3f | 2284 | UnitType t = unit_name_to_type(name); |
7d17cfbc | 2285 | |
5d512d54 LN |
2286 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
2287 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
2288 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
2289 | ||
718db961 | 2290 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 2291 | } |
60918275 | 2292 | |
4b6a2b3f ZJS |
2293 | Unit *unit = manager_get_unit(m, name); |
2294 | if (unit) { | |
d904afc7 LB |
2295 | /* The time-based cache allows to start new units without daemon-reload, |
2296 | * but if they are already referenced (because of dependencies or ordering) | |
2297 | * then we have to force a load of the fragment. As an optimization, check | |
2298 | * first if anything in the usual paths was modified since the last time | |
7233e91a LB |
2299 | * the cache was loaded. Also check if the last time an attempt to load the |
2300 | * unit was made was before the most recent cache refresh, so that we know | |
81be2388 | 2301 | * we need to try again — even if the cache is current, it might have been |
7233e91a LB |
2302 | * updated in a different context before we had a chance to retry loading |
2303 | * this particular unit. */ | |
4b6a2b3f ZJS |
2304 | if (manager_unit_cache_should_retry_load(unit)) |
2305 | unit->load_state = UNIT_STUB; | |
d904afc7 | 2306 | else { |
4b6a2b3f | 2307 | *ret = unit; |
535b7fcb | 2308 | return 0; /* The unit was already loaded */ |
d904afc7 LB |
2309 | } |
2310 | } else { | |
4b6a2b3f ZJS |
2311 | unit = cleanup_unit = unit_new(m, unit_vtable[t]->object_size); |
2312 | if (!unit) | |
d904afc7 | 2313 | return -ENOMEM; |
034c6ed7 | 2314 | } |
60918275 | 2315 | |
7d17cfbc | 2316 | if (path) { |
4b6a2b3f | 2317 | r = free_and_strdup(&unit->fragment_path, path); |
d904afc7 LB |
2318 | if (r < 0) |
2319 | return r; | |
7d17cfbc | 2320 | } |
0301abf4 | 2321 | |
4b6a2b3f | 2322 | r = unit_add_name(unit, name); |
dc409696 | 2323 | if (r < 0) |
1ffba6fe | 2324 | return r; |
60918275 | 2325 | |
4b6a2b3f ZJS |
2326 | unit_add_to_load_queue(unit); |
2327 | unit_add_to_dbus_queue(unit); | |
2328 | unit_add_to_gc_queue(unit); | |
c1e1601e | 2329 | |
4b6a2b3f ZJS |
2330 | *ret = unit; |
2331 | TAKE_PTR(cleanup_unit); | |
db06e3b6 | 2332 | |
535b7fcb | 2333 | return 1; /* The unit was added the load queue */ |
db06e3b6 LP |
2334 | } |
2335 | ||
c2756a68 LP |
2336 | int manager_load_unit( |
2337 | Manager *m, | |
2338 | const char *name, | |
2339 | const char *path, | |
718db961 | 2340 | sd_bus_error *e, |
4b6a2b3f | 2341 | Unit **ret) { |
db06e3b6 LP |
2342 | int r; |
2343 | ||
2344 | assert(m); | |
4b6a2b3f | 2345 | assert(ret); |
db06e3b6 | 2346 | |
4b6a2b3f | 2347 | /* This will load the unit config, but not actually start any services or anything. */ |
db06e3b6 | 2348 | |
4b6a2b3f | 2349 | r = manager_load_unit_prepare(m, name, path, e, ret); |
535b7fcb | 2350 | if (r <= 0) |
db06e3b6 LP |
2351 | return r; |
2352 | ||
535b7fcb | 2353 | /* Unit was newly loaded */ |
f50e0a01 | 2354 | manager_dispatch_load_queue(m); |
4b6a2b3f | 2355 | *ret = unit_follow_merge(*ret); |
4109ede7 ZJS |
2356 | return 0; |
2357 | } | |
2358 | ||
2359 | int manager_load_startable_unit_or_warn( | |
2360 | Manager *m, | |
2361 | const char *name, | |
2362 | const char *path, | |
2363 | Unit **ret) { | |
2364 | ||
2365 | /* Load a unit, make sure it loaded fully and is not masked. */ | |
2366 | ||
2367 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2368 | Unit *unit; | |
2369 | int r; | |
2370 | ||
2371 | r = manager_load_unit(m, name, path, &error, &unit); | |
2372 | if (r < 0) | |
2373 | return log_error_errno(r, "Failed to load %s %s: %s", | |
8ace1db7 | 2374 | name ? "unit" : "unit file", name ?: path, |
4109ede7 | 2375 | bus_error_message(&error, r)); |
8ace1db7 LP |
2376 | |
2377 | r = bus_unit_validate_load_state(unit, &error); | |
2378 | if (r < 0) | |
2379 | return log_error_errno(r, "%s", bus_error_message(&error, r)); | |
9e2f7c11 | 2380 | |
4109ede7 | 2381 | *ret = unit; |
60918275 LP |
2382 | return 0; |
2383 | } | |
a66d02c3 | 2384 | |
7fad411c LP |
2385 | void manager_clear_jobs(Manager *m) { |
2386 | Job *j; | |
2387 | ||
2388 | assert(m); | |
2389 | ||
7fad411c | 2390 | while ((j = hashmap_first(m->jobs))) |
5273510e | 2391 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 2392 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 2393 | } |
83c60c9f | 2394 | |
f75f613d FB |
2395 | void manager_unwatch_pid(Manager *m, pid_t pid) { |
2396 | assert(m); | |
2397 | ||
2398 | /* First let's drop the unit keyed as "pid". */ | |
2399 | (void) hashmap_remove(m->watch_pids, PID_TO_PTR(pid)); | |
2400 | ||
2401 | /* Then, let's also drop the array keyed by -pid. */ | |
2402 | free(hashmap_remove(m->watch_pids, PID_TO_PTR(-pid))); | |
2403 | } | |
2404 | ||
752b5905 | 2405 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
99534007 | 2406 | Manager *m = ASSERT_PTR(userdata); |
83c60c9f | 2407 | Job *j; |
034c6ed7 | 2408 | |
752b5905 | 2409 | assert(source); |
9152c765 | 2410 | |
da8e1782 | 2411 | while ((j = prioq_peek(m->run_queue))) { |
ac1135be | 2412 | assert(j->installed); |
034c6ed7 LP |
2413 | assert(j->in_run_queue); |
2414 | ||
6e64994d | 2415 | (void) job_run_and_invalidate(j); |
9152c765 | 2416 | } |
034c6ed7 | 2417 | |
a0b64226 | 2418 | if (m->n_running_jobs > 0) |
03b717a3 MS |
2419 | manager_watch_jobs_in_progress(m); |
2420 | ||
31a7eb86 ZJS |
2421 | if (m->n_on_console > 0) |
2422 | manager_watch_idle_pipe(m); | |
2423 | ||
752b5905 | 2424 | return 1; |
c1e1601e LP |
2425 | } |
2426 | ||
b0c4b282 LP |
2427 | void manager_trigger_run_queue(Manager *m) { |
2428 | int r; | |
2429 | ||
2430 | assert(m); | |
2431 | ||
2432 | r = sd_event_source_set_enabled( | |
2433 | m->run_queue_event_source, | |
2434 | prioq_isempty(m->run_queue) ? SD_EVENT_OFF : SD_EVENT_ONESHOT); | |
2435 | if (r < 0) | |
2436 | log_warning_errno(r, "Failed to enable job run queue event source, ignoring: %m"); | |
2437 | } | |
2438 | ||
9588bc32 | 2439 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
e0a08581 | 2440 | unsigned n = 0, budget; |
595ed347 | 2441 | Unit *u; |
e0a08581 | 2442 | Job *j; |
c1e1601e LP |
2443 | |
2444 | assert(m); | |
2445 | ||
b8d381c4 LP |
2446 | /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly |
2447 | * as we can. There's no point in throttling generation of signals in that case. */ | |
2448 | if (MANAGER_IS_RELOADING(m) || m->send_reloading_done || m->pending_reload_message) | |
f5fbe71d | 2449 | budget = UINT_MAX; /* infinite budget in this case */ |
b8d381c4 LP |
2450 | else { |
2451 | /* Anything to do at all? */ | |
2452 | if (!m->dbus_unit_queue && !m->dbus_job_queue) | |
2453 | return 0; | |
2454 | ||
2455 | /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's | |
2456 | * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */ | |
2457 | if (manager_bus_n_queued_write(m) > MANAGER_BUS_BUSY_THRESHOLD) | |
2458 | return 0; | |
2459 | ||
2460 | /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't | |
2461 | * overly full before this call we shouldn't increase it in size too wildly in one step, and we | |
2462 | * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of | |
2463 | * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message, | |
5238e957 BB |
2464 | * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to |
2465 | * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct | |
b8d381c4 LP |
2466 | * connections it will be counted five times. This difference in counting ("references" |
2467 | * vs. "instances") is primarily a result of the fact that it's easier to implement it this way, | |
2468 | * however it also reflects the thinking that the "threshold" should put a limit on used queue memory, | |
2469 | * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is | |
2470 | * currently chosen much higher than the "budget". */ | |
2471 | budget = MANAGER_BUS_MESSAGE_BUDGET; | |
2472 | } | |
e0a08581 | 2473 | |
b8d381c4 | 2474 | while (budget != 0 && (u = m->dbus_unit_queue)) { |
e0a08581 | 2475 | |
595ed347 | 2476 | assert(u->in_dbus_queue); |
c1e1601e | 2477 | |
595ed347 | 2478 | bus_unit_send_change_signal(u); |
b8d381c4 LP |
2479 | n++; |
2480 | ||
f5fbe71d | 2481 | if (budget != UINT_MAX) |
b8d381c4 | 2482 | budget--; |
c1e1601e LP |
2483 | } |
2484 | ||
b8d381c4 | 2485 | while (budget != 0 && (j = m->dbus_job_queue)) { |
c1e1601e LP |
2486 | assert(j->in_dbus_queue); |
2487 | ||
2488 | bus_job_send_change_signal(j); | |
b8d381c4 LP |
2489 | n++; |
2490 | ||
f5fbe71d | 2491 | if (budget != UINT_MAX) |
b8d381c4 | 2492 | budget--; |
c1e1601e LP |
2493 | } |
2494 | ||
b8d381c4 | 2495 | if (m->send_reloading_done) { |
71445ae7 | 2496 | m->send_reloading_done = false; |
718db961 | 2497 | bus_manager_send_reloading(m, false); |
b8d381c4 | 2498 | n++; |
71445ae7 LP |
2499 | } |
2500 | ||
b8d381c4 | 2501 | if (m->pending_reload_message) { |
209de525 | 2502 | bus_send_pending_reload_message(m); |
e0a08581 LP |
2503 | n++; |
2504 | } | |
718db961 | 2505 | |
c1e1601e | 2506 | return n; |
9152c765 LP |
2507 | } |
2508 | ||
d8fdc620 LP |
2509 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2510 | Manager *m = userdata; | |
60473f0c | 2511 | char buf[PATH_MAX]; |
d8fdc620 LP |
2512 | ssize_t n; |
2513 | ||
2514 | n = recv(fd, buf, sizeof(buf), 0); | |
2515 | if (n < 0) | |
2516 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
2517 | if (n == 0) { | |
2518 | log_error("Got zero-length cgroups agent message, ignoring."); | |
2519 | return 0; | |
2520 | } | |
2521 | if ((size_t) n >= sizeof(buf)) { | |
2522 | log_error("Got overly long cgroups agent message, ignoring."); | |
2523 | return 0; | |
2524 | } | |
2525 | ||
2526 | if (memchr(buf, 0, n)) { | |
2527 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
2528 | return 0; | |
2529 | } | |
2530 | buf[n] = 0; | |
2531 | ||
2532 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 2533 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
2534 | |
2535 | return 0; | |
2536 | } | |
2537 | ||
5151b4cc | 2538 | static bool manager_process_barrier_fd(char * const *tags, FDSet *fds) { |
4f07ddfa KKD |
2539 | |
2540 | /* nothing else must be sent when using BARRIER=1 */ | |
5151b4cc | 2541 | if (strv_contains(tags, "BARRIER=1")) { |
46276454 | 2542 | if (strv_length(tags) != 1) |
5151b4cc | 2543 | log_warning("Extra notification messages sent with BARRIER=1, ignoring everything."); |
46276454 LP |
2544 | else if (fdset_size(fds) != 1) |
2545 | log_warning("Got incorrect number of fds with BARRIER=1, closing them."); | |
5151b4cc BR |
2546 | |
2547 | /* Drop the message if BARRIER=1 was found */ | |
4f07ddfa | 2548 | return true; |
5151b4cc | 2549 | } |
4f07ddfa KKD |
2550 | |
2551 | return false; | |
2552 | } | |
2553 | ||
db256aab LP |
2554 | static void manager_invoke_notify_message( |
2555 | Manager *m, | |
2556 | Unit *u, | |
2557 | const struct ucred *ucred, | |
5151b4cc | 2558 | char * const *tags, |
db256aab LP |
2559 | FDSet *fds) { |
2560 | ||
5ba6985b LP |
2561 | assert(m); |
2562 | assert(u); | |
db256aab | 2563 | assert(ucred); |
5151b4cc | 2564 | assert(tags); |
5ba6985b | 2565 | |
62a76913 | 2566 | if (u->notifygen == m->notifygen) /* Already invoked on this same unit in this same iteration? */ |
5ba6985b | 2567 | return; |
62a76913 LP |
2568 | u->notifygen = m->notifygen; |
2569 | ||
5151b4cc | 2570 | if (UNIT_VTABLE(u)->notify_message) |
db256aab | 2571 | UNIT_VTABLE(u)->notify_message(u, ucred, tags, fds); |
62a76913 | 2572 | |
5151b4cc BR |
2573 | else if (DEBUG_LOGGING) { |
2574 | _cleanup_free_ char *buf = NULL, *x = NULL, *y = NULL; | |
a86b7675 | 2575 | |
5151b4cc BR |
2576 | buf = strv_join(tags, ", "); |
2577 | if (buf) | |
2578 | x = ellipsize(buf, 20, 90); | |
a86b7675 | 2579 | if (x) |
da5fb861 LP |
2580 | y = cescape(x); |
2581 | ||
a86b7675 ZJS |
2582 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); |
2583 | } | |
5ba6985b LP |
2584 | } |
2585 | ||
718db961 | 2586 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 2587 | |
b215b0ed | 2588 | _cleanup_fdset_free_ FDSet *fds = NULL; |
99534007 | 2589 | Manager *m = ASSERT_PTR(userdata); |
b215b0ed DH |
2590 | char buf[NOTIFY_BUFFER_MAX+1]; |
2591 | struct iovec iovec = { | |
2592 | .iov_base = buf, | |
2593 | .iov_len = sizeof(buf)-1, | |
2594 | }; | |
fb29cdbe LP |
2595 | CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred)) + |
2596 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)) control; | |
b215b0ed DH |
2597 | struct msghdr msghdr = { |
2598 | .msg_iov = &iovec, | |
2599 | .msg_iovlen = 1, | |
2600 | .msg_control = &control, | |
2601 | .msg_controllen = sizeof(control), | |
2602 | }; | |
2603 | ||
2604 | struct cmsghdr *cmsg; | |
2605 | struct ucred *ucred = NULL; | |
62a76913 | 2606 | _cleanup_free_ Unit **array_copy = NULL; |
5151b4cc | 2607 | _cleanup_strv_free_ char **tags = NULL; |
62a76913 | 2608 | Unit *u1, *u2, **array; |
b215b0ed | 2609 | int r, *fd_array = NULL; |
da6053d0 | 2610 | size_t n_fds = 0; |
62a76913 | 2611 | bool found = false; |
8c47c732 LP |
2612 | ssize_t n; |
2613 | ||
718db961 LP |
2614 | assert(m->notify_fd == fd); |
2615 | ||
2616 | if (revents != EPOLLIN) { | |
2617 | log_warning("Got unexpected poll event for notify fd."); | |
2618 | return 0; | |
2619 | } | |
8c47c732 | 2620 | |
3691bcf3 | 2621 | n = recvmsg_safe(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
8add30a0 YW |
2622 | if (n < 0) { |
2623 | if (ERRNO_IS_TRANSIENT(n)) | |
2624 | return 0; /* Spurious wakeup, try again */ | |
2625 | if (n == -EXFULL) { | |
2626 | log_warning("Got message with truncated control data (too many fds sent?), ignoring."); | |
2627 | return 0; | |
2628 | } | |
3691bcf3 LP |
2629 | /* If this is any other, real error, then let's stop processing this socket. This of course |
2630 | * means we won't take notification messages anymore, but that's still better than busy | |
2631 | * looping around this: being woken up over and over again but being unable to actually read | |
2632 | * the message off the socket. */ | |
2633 | return log_error_errno(n, "Failed to receive notification message: %m"); | |
8add30a0 | 2634 | } |
a354329f | 2635 | |
b215b0ed DH |
2636 | CMSG_FOREACH(cmsg, &msghdr) { |
2637 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 2638 | |
3691bcf3 | 2639 | assert(!fd_array); |
b1d02191 | 2640 | fd_array = CMSG_TYPED_DATA(cmsg, int); |
b215b0ed | 2641 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); |
a354329f | 2642 | |
b215b0ed DH |
2643 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
2644 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
2645 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 2646 | |
3691bcf3 | 2647 | assert(!ucred); |
b1d02191 | 2648 | ucred = CMSG_TYPED_DATA(cmsg, struct ucred); |
a354329f | 2649 | } |
b215b0ed | 2650 | } |
a354329f | 2651 | |
b215b0ed DH |
2652 | if (n_fds > 0) { |
2653 | assert(fd_array); | |
a354329f | 2654 | |
b215b0ed DH |
2655 | r = fdset_new_array(&fds, fd_array, n_fds); |
2656 | if (r < 0) { | |
2657 | close_many(fd_array, n_fds); | |
9987750e FB |
2658 | log_oom(); |
2659 | return 0; | |
a354329f | 2660 | } |
b215b0ed | 2661 | } |
8c47c732 | 2662 | |
15e23e8c | 2663 | if (!ucred || !pid_is_valid(ucred->pid)) { |
b215b0ed DH |
2664 | log_warning("Received notify message without valid credentials. Ignoring."); |
2665 | return 0; | |
2666 | } | |
8c47c732 | 2667 | |
045a3d59 | 2668 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
2669 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
2670 | return 0; | |
2671 | } | |
8c47c732 | 2672 | |
8f41e6b6 ZJS |
2673 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. |
2674 | * We permit one trailing NUL byte in the message, but don't expect it. */ | |
875ca88d LP |
2675 | if (n > 1 && memchr(buf, 0, n-1)) { |
2676 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
2677 | return 0; | |
2678 | } | |
2679 | ||
8f41e6b6 | 2680 | /* Make sure it's NUL-terminated, then parse it to obtain the tags list. */ |
b215b0ed | 2681 | buf[n] = 0; |
5151b4cc BR |
2682 | tags = strv_split_newlines(buf); |
2683 | if (!tags) { | |
2684 | log_oom(); | |
2685 | return 0; | |
2686 | } | |
8c47c732 | 2687 | |
8f41e6b6 | 2688 | /* Possibly a barrier fd, let's see. */ |
7b0a1267 LP |
2689 | if (manager_process_barrier_fd(tags, fds)) { |
2690 | log_debug("Received barrier notification message from PID " PID_FMT ".", ucred->pid); | |
4f07ddfa | 2691 | return 0; |
7b0a1267 | 2692 | } |
4f07ddfa | 2693 | |
62a76913 LP |
2694 | /* Increase the generation counter used for filtering out duplicate unit invocations. */ |
2695 | m->notifygen++; | |
2696 | ||
2697 | /* Notify every unit that might be interested, which might be multiple. */ | |
b215b0ed | 2698 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); |
62a76913 LP |
2699 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(ucred->pid)); |
2700 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-ucred->pid)); | |
2701 | if (array) { | |
2702 | size_t k = 0; | |
5ba6985b | 2703 | |
62a76913 LP |
2704 | while (array[k]) |
2705 | k++; | |
5ba6985b | 2706 | |
62a76913 LP |
2707 | array_copy = newdup(Unit*, array, k+1); |
2708 | if (!array_copy) | |
2709 | log_oom(); | |
2710 | } | |
8f41e6b6 ZJS |
2711 | /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle |
2712 | * duplicate units make sure we only invoke each unit's handler once. */ | |
62a76913 | 2713 | if (u1) { |
5151b4cc | 2714 | manager_invoke_notify_message(m, u1, ucred, tags, fds); |
62a76913 LP |
2715 | found = true; |
2716 | } | |
2717 | if (u2) { | |
5151b4cc | 2718 | manager_invoke_notify_message(m, u2, ucred, tags, fds); |
62a76913 LP |
2719 | found = true; |
2720 | } | |
2721 | if (array_copy) | |
2722 | for (size_t i = 0; array_copy[i]; i++) { | |
5151b4cc | 2723 | manager_invoke_notify_message(m, array_copy[i], ucred, tags, fds); |
62a76913 LP |
2724 | found = true; |
2725 | } | |
8c47c732 | 2726 | |
62a76913 LP |
2727 | if (!found) |
2728 | log_warning("Cannot find unit for notify message of PID "PID_FMT", ignoring.", ucred->pid); | |
a354329f | 2729 | |
b215b0ed | 2730 | if (fdset_size(fds) > 0) |
5fd2c135 | 2731 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2732 | |
2733 | return 0; | |
2734 | } | |
2735 | ||
62a76913 LP |
2736 | static void manager_invoke_sigchld_event( |
2737 | Manager *m, | |
2738 | Unit *u, | |
2739 | const siginfo_t *si) { | |
36f20ae3 | 2740 | |
5ba6985b LP |
2741 | assert(m); |
2742 | assert(u); | |
2743 | assert(si); | |
2744 | ||
62a76913 LP |
2745 | /* Already invoked the handler of this unit in this iteration? Then don't process this again */ |
2746 | if (u->sigchldgen == m->sigchldgen) | |
2747 | return; | |
2748 | u->sigchldgen = m->sigchldgen; | |
5ba6985b | 2749 | |
62a76913 | 2750 | log_unit_debug(u, "Child "PID_FMT" belongs to %s.", si->si_pid, u->id); |
5ba6985b | 2751 | unit_unwatch_pid(u, si->si_pid); |
e57051f5 | 2752 | |
62a76913 LP |
2753 | if (UNIT_VTABLE(u)->sigchld_event) |
2754 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
5ba6985b LP |
2755 | } |
2756 | ||
575b300b | 2757 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata) { |
99534007 | 2758 | Manager *m = ASSERT_PTR(userdata); |
575b300b LP |
2759 | siginfo_t si = {}; |
2760 | int r; | |
2761 | ||
2762 | assert(source); | |
9152c765 | 2763 | |
8f41e6b6 ZJS |
2764 | /* First we call waitid() for a PID and do not reap the zombie. That way we can still access |
2765 | * /proc/$PID for it while it is a zombie. */ | |
9152c765 | 2766 | |
575b300b | 2767 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { |
acbb0225 | 2768 | |
8afabc50 AJ |
2769 | if (errno != ECHILD) |
2770 | log_error_errno(errno, "Failed to peek for child with waitid(), ignoring: %m"); | |
acbb0225 | 2771 | |
8afabc50 | 2772 | goto turn_off; |
575b300b | 2773 | } |
4112df16 | 2774 | |
575b300b LP |
2775 | if (si.si_pid <= 0) |
2776 | goto turn_off; | |
2777 | ||
2778 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { | |
62a76913 | 2779 | _cleanup_free_ Unit **array_copy = NULL; |
575b300b | 2780 | _cleanup_free_ char *name = NULL; |
62a76913 | 2781 | Unit *u1, *u2, **array; |
575b300b LP |
2782 | |
2783 | (void) get_process_comm(si.si_pid, &name); | |
2784 | ||
2785 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
2786 | si.si_pid, strna(name), | |
2787 | sigchld_code_to_string(si.si_code), | |
2788 | si.si_status, | |
2789 | strna(si.si_code == CLD_EXITED | |
2790 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2791 | : signal_to_string(si.si_status))); | |
2792 | ||
62a76913 LP |
2793 | /* Increase the generation counter used for filtering out duplicate unit invocations */ |
2794 | m->sigchldgen++; | |
2795 | ||
2796 | /* And now figure out the unit this belongs to, it might be multiple... */ | |
575b300b | 2797 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
62a76913 LP |
2798 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(si.si_pid)); |
2799 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-si.si_pid)); | |
2800 | if (array) { | |
2801 | size_t n = 0; | |
2802 | ||
5238e957 | 2803 | /* Count how many entries the array has */ |
62a76913 LP |
2804 | while (array[n]) |
2805 | n++; | |
2806 | ||
2807 | /* Make a copy of the array so that we don't trip up on the array changing beneath us */ | |
2808 | array_copy = newdup(Unit*, array, n+1); | |
2809 | if (!array_copy) | |
2810 | log_oom(); | |
2811 | } | |
2812 | ||
2813 | /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but | |
2814 | * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for | |
2815 | * each iteration. */ | |
2ba6ae6b ZJS |
2816 | if (u1) { |
2817 | /* We check for oom condition, in case we got SIGCHLD before the oom notification. | |
2818 | * We only do this for the cgroup the PID belonged to. */ | |
2819 | (void) unit_check_oom(u1); | |
2820 | ||
288bd406 | 2821 | /* We check if systemd-oomd performed a kill so that we log and notify appropriately */ |
fe8d22fb AZ |
2822 | (void) unit_check_oomd_kill(u1); |
2823 | ||
62a76913 | 2824 | manager_invoke_sigchld_event(m, u1, &si); |
2ba6ae6b | 2825 | } |
62a76913 LP |
2826 | if (u2) |
2827 | manager_invoke_sigchld_event(m, u2, &si); | |
2828 | if (array_copy) | |
2829 | for (size_t i = 0; array_copy[i]; i++) | |
2830 | manager_invoke_sigchld_event(m, array_copy[i], &si); | |
575b300b | 2831 | } |
9152c765 | 2832 | |
575b300b LP |
2833 | /* And now, we actually reap the zombie. */ |
2834 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2835 | log_error_errno(errno, "Failed to dequeue child, ignoring: %m"); | |
2836 | return 0; | |
2837 | } | |
9152c765 | 2838 | |
575b300b | 2839 | return 0; |
8c47c732 | 2840 | |
575b300b LP |
2841 | turn_off: |
2842 | /* All children processed for now, turn off event source */ | |
4112df16 | 2843 | |
575b300b LP |
2844 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); |
2845 | if (r < 0) | |
2846 | return log_error_errno(r, "Failed to disable SIGCHLD event source: %m"); | |
9152c765 LP |
2847 | |
2848 | return 0; | |
2849 | } | |
2850 | ||
5f968096 ZJS |
2851 | static void manager_start_special(Manager *m, const char *name, JobMode mode) { |
2852 | Job *job; | |
398ef8ba | 2853 | |
5f968096 ZJS |
2854 | if (manager_add_job_by_name_and_warn(m, JOB_START, name, mode, NULL, &job) < 0) |
2855 | return; | |
1e001f52 | 2856 | |
5f968096 ZJS |
2857 | const char *s = unit_status_string(job->unit, NULL); |
2858 | ||
2859 | log_info("Activating special unit %s...", s); | |
3889fc6f ZJS |
2860 | |
2861 | sd_notifyf(false, | |
2862 | "STATUS=Activating special unit %s...", s); | |
2863 | m->status_ready = false; | |
28247076 LP |
2864 | } |
2865 | ||
24dd31c1 LN |
2866 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2867 | /* If the user presses C-A-D more than | |
2868 | * 7 times within 2s, we reboot/shutdown immediately, | |
2869 | * unless it was disabled in system.conf */ | |
2870 | ||
7994ac1d | 2871 | if (ratelimit_below(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
5f968096 | 2872 | manager_start_special(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 | 2873 | else |
7af67e9a | 2874 | emergency_action(m, m->cad_burst_action, EMERGENCY_ACTION_WARN, NULL, -1, |
ae8c7939 | 2875 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); |
24dd31c1 LN |
2876 | } |
2877 | ||
718db961 | 2878 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
99534007 | 2879 | Manager *m = ASSERT_PTR(userdata); |
9152c765 LP |
2880 | ssize_t n; |
2881 | struct signalfd_siginfo sfsi; | |
dacd6cee | 2882 | int r; |
9152c765 | 2883 | |
718db961 LP |
2884 | assert(m->signal_fd == fd); |
2885 | ||
2886 | if (revents != EPOLLIN) { | |
2887 | log_warning("Got unexpected events from signal file descriptor."); | |
2888 | return 0; | |
2889 | } | |
9152c765 | 2890 | |
575b300b | 2891 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
8add30a0 YW |
2892 | if (n < 0) { |
2893 | if (ERRNO_IS_TRANSIENT(errno)) | |
575b300b | 2894 | return 0; |
9152c765 | 2895 | |
575b300b LP |
2896 | /* We return an error here, which will kill this handler, |
2897 | * to avoid a busy loop on read error. */ | |
2898 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
2899 | } | |
8add30a0 | 2900 | if (n != sizeof(sfsi)) { |
c0f86d66 | 2901 | log_warning("Truncated read from signal fd (%zi bytes), ignoring!", n); |
8add30a0 YW |
2902 | return 0; |
2903 | } | |
9152c765 | 2904 | |
575b300b LP |
2905 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
2906 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) | |
2907 | ? LOG_DEBUG : LOG_INFO, | |
2908 | &sfsi); | |
1e001f52 | 2909 | |
575b300b | 2910 | switch (sfsi.ssi_signo) { |
b9cd2ec1 | 2911 | |
575b300b LP |
2912 | case SIGCHLD: |
2913 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
2914 | if (r < 0) | |
8afabc50 | 2915 | log_warning_errno(r, "Failed to enable SIGCHLD event source, ignoring: %m"); |
b9cd2ec1 | 2916 | |
575b300b | 2917 | break; |
84e9af1e | 2918 | |
575b300b LP |
2919 | case SIGTERM: |
2920 | if (MANAGER_IS_SYSTEM(m)) { | |
ba0c7754 | 2921 | /* This is for compatibility with the original sysvinit */ |
c52b19d6 LP |
2922 | if (verify_run_space_and_log("Refusing to reexecute") < 0) |
2923 | break; | |
2924 | ||
2925 | m->objective = MANAGER_REEXECUTE; | |
a1b256b0 | 2926 | break; |
575b300b | 2927 | } |
84e9af1e | 2928 | |
575b300b LP |
2929 | _fallthrough_; |
2930 | case SIGINT: | |
2931 | if (MANAGER_IS_SYSTEM(m)) | |
2932 | manager_handle_ctrl_alt_del(m); | |
2933 | else | |
5f968096 | 2934 | manager_start_special(m, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY); |
575b300b | 2935 | break; |
84e9af1e | 2936 | |
575b300b | 2937 | case SIGWINCH: |
ba0c7754 | 2938 | /* This is a nop on non-init */ |
575b300b | 2939 | if (MANAGER_IS_SYSTEM(m)) |
5f968096 | 2940 | manager_start_special(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2941 | |
575b300b | 2942 | break; |
84e9af1e | 2943 | |
575b300b | 2944 | case SIGPWR: |
ba0c7754 | 2945 | /* This is a nop on non-init */ |
575b300b | 2946 | if (MANAGER_IS_SYSTEM(m)) |
5f968096 | 2947 | manager_start_special(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
6632c602 | 2948 | |
575b300b | 2949 | break; |
57ee42ce | 2950 | |
8559b3b7 | 2951 | case SIGUSR1: |
2b680534 | 2952 | if (manager_dbus_is_running(m, false)) { |
575b300b | 2953 | log_info("Trying to reconnect to bus..."); |
575b300b | 2954 | |
8559b3b7 LP |
2955 | (void) bus_init_api(m); |
2956 | ||
2957 | if (MANAGER_IS_SYSTEM(m)) | |
2958 | (void) bus_init_system(m); | |
5f968096 ZJS |
2959 | } else |
2960 | manager_start_special(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); | |
57ee42ce | 2961 | |
575b300b | 2962 | break; |
575b300b LP |
2963 | |
2964 | case SIGUSR2: { | |
2965 | _cleanup_free_ char *dump = NULL; | |
2966 | ||
d1d8786c | 2967 | r = manager_get_dump_string(m, /* patterns= */ NULL, &dump); |
575b300b LP |
2968 | if (r < 0) { |
2969 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); | |
57ee42ce LP |
2970 | break; |
2971 | } | |
2972 | ||
575b300b LP |
2973 | log_dump(LOG_INFO, dump); |
2974 | break; | |
2975 | } | |
2149e37c | 2976 | |
575b300b | 2977 | case SIGHUP: |
c52b19d6 LP |
2978 | if (verify_run_space_and_log("Refusing to reload") < 0) |
2979 | break; | |
2980 | ||
2981 | m->objective = MANAGER_RELOAD; | |
575b300b LP |
2982 | break; |
2983 | ||
2984 | default: { | |
2985 | ||
2986 | /* Starting SIGRTMIN+0 */ | |
2987 | static const struct { | |
2988 | const char *target; | |
2989 | JobMode mode; | |
2990 | } target_table[] = { | |
13ffc607 LP |
2991 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, |
2992 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2993 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2994 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2995 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2996 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2997 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2998 | [7] = { SPECIAL_SOFT_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
575b300b LP |
2999 | }; |
3000 | ||
3001 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
af41e508 | 3002 | static const ManagerObjective objective_table[] = { |
575b300b LP |
3003 | [0] = MANAGER_HALT, |
3004 | [1] = MANAGER_POWEROFF, | |
3005 | [2] = MANAGER_REBOOT, | |
3006 | [3] = MANAGER_KEXEC, | |
13ffc607 | 3007 | [4] = MANAGER_SOFT_REBOOT, |
575b300b | 3008 | }; |
b2cdc666 | 3009 | |
575b300b LP |
3010 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && |
3011 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
3012 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
5f968096 | 3013 | manager_start_special(m, target_table[idx].target, target_table[idx].mode); |
1005d14f | 3014 | break; |
2149e37c | 3015 | } |
1005d14f | 3016 | |
575b300b | 3017 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
af41e508 LP |
3018 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(objective_table)) { |
3019 | m->objective = objective_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
575b300b LP |
3020 | break; |
3021 | } | |
3022 | ||
3023 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
3024 | ||
29e6b0c1 LP |
3025 | case 18: { |
3026 | bool generic = false; | |
3027 | ||
3028 | if (sfsi.ssi_code != SI_QUEUE) | |
3029 | generic = true; | |
3030 | else { | |
3031 | /* Override a few select commands by our own PID1-specific logic */ | |
3032 | ||
3033 | switch (sfsi.ssi_int) { | |
3034 | ||
3035 | case _COMMON_SIGNAL_COMMAND_LOG_LEVEL_BASE..._COMMON_SIGNAL_COMMAND_LOG_LEVEL_END: | |
3036 | manager_override_log_level(m, sfsi.ssi_int - _COMMON_SIGNAL_COMMAND_LOG_LEVEL_BASE); | |
3037 | break; | |
3038 | ||
3039 | case COMMON_SIGNAL_COMMAND_CONSOLE: | |
3040 | manager_override_log_target(m, LOG_TARGET_CONSOLE); | |
3041 | break; | |
3042 | ||
3043 | case COMMON_SIGNAL_COMMAND_JOURNAL: | |
3044 | manager_override_log_target(m, LOG_TARGET_JOURNAL); | |
3045 | break; | |
3046 | ||
3047 | case COMMON_SIGNAL_COMMAND_KMSG: | |
3048 | manager_override_log_target(m, LOG_TARGET_KMSG); | |
3049 | break; | |
3050 | ||
3051 | case COMMON_SIGNAL_COMMAND_NULL: | |
3052 | manager_override_log_target(m, LOG_TARGET_NULL); | |
3053 | break; | |
3054 | ||
3055 | default: | |
3056 | generic = true; | |
3057 | } | |
3058 | } | |
3059 | ||
3060 | if (generic) | |
3061 | return sigrtmin18_handler(source, &sfsi, NULL); | |
3062 | ||
3063 | break; | |
3064 | } | |
3065 | ||
575b300b | 3066 | case 20: |
43bba15a | 3067 | manager_override_show_status(m, SHOW_STATUS_YES, "signal"); |
a16e1123 LP |
3068 | break; |
3069 | ||
575b300b | 3070 | case 21: |
43bba15a | 3071 | manager_override_show_status(m, SHOW_STATUS_NO, "signal"); |
575b300b | 3072 | break; |
7d793605 | 3073 | |
575b300b | 3074 | case 22: |
a6ecbf83 | 3075 | manager_override_log_level(m, LOG_DEBUG); |
575b300b LP |
3076 | break; |
3077 | ||
3078 | case 23: | |
a6ecbf83 | 3079 | manager_restore_original_log_level(m); |
575b300b | 3080 | break; |
0003d1ab | 3081 | |
575b300b LP |
3082 | case 24: |
3083 | if (MANAGER_IS_USER(m)) { | |
af41e508 | 3084 | m->objective = MANAGER_EXIT; |
575b300b | 3085 | return 0; |
0658666b | 3086 | } |
9152c765 | 3087 | |
575b300b LP |
3088 | /* This is a nop on init */ |
3089 | break; | |
3090 | ||
463aef23 FB |
3091 | case 25: |
3092 | m->objective = MANAGER_REEXECUTE; | |
3093 | break; | |
3094 | ||
575b300b LP |
3095 | case 26: |
3096 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
bda7d78b | 3097 | manager_restore_original_log_target(m); |
575b300b LP |
3098 | break; |
3099 | ||
3100 | case 27: | |
bda7d78b | 3101 | manager_override_log_target(m, LOG_TARGET_CONSOLE); |
575b300b LP |
3102 | break; |
3103 | ||
3104 | case 28: | |
bda7d78b | 3105 | manager_override_log_target(m, LOG_TARGET_KMSG); |
575b300b LP |
3106 | break; |
3107 | ||
3108 | default: | |
3109 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
3110 | } | |
3111 | }} | |
034c6ed7 LP |
3112 | |
3113 | return 0; | |
3114 | } | |
3115 | ||
718db961 | 3116 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
99534007 | 3117 | Manager *m = ASSERT_PTR(userdata); |
718db961 | 3118 | Unit *u; |
034c6ed7 | 3119 | |
a80c1575 | 3120 | log_struct(LOG_DEBUG, |
2b044526 | 3121 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
a1230ff9 | 3122 | LOG_MESSAGE("Time has been changed")); |
034c6ed7 | 3123 | |
718db961 | 3124 | /* Restart the watch */ |
7feedd18 | 3125 | (void) manager_setup_time_change(m); |
4e434314 | 3126 | |
90e74a66 | 3127 | HASHMAP_FOREACH(u, m->units) |
718db961 LP |
3128 | if (UNIT_VTABLE(u)->time_change) |
3129 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 3130 | |
718db961 LP |
3131 | return 0; |
3132 | } | |
ea430986 | 3133 | |
bbf5fd8e LP |
3134 | static int manager_dispatch_timezone_change( |
3135 | sd_event_source *source, | |
3136 | const struct inotify_event *e, | |
3137 | void *userdata) { | |
3138 | ||
99534007 | 3139 | Manager *m = ASSERT_PTR(userdata); |
bbf5fd8e | 3140 | int changed; |
bbf5fd8e LP |
3141 | Unit *u; |
3142 | ||
bbf5fd8e LP |
3143 | log_debug("inotify event for /etc/localtime"); |
3144 | ||
3145 | changed = manager_read_timezone_stat(m); | |
f20db199 | 3146 | if (changed <= 0) |
bbf5fd8e | 3147 | return changed; |
bbf5fd8e LP |
3148 | |
3149 | /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */ | |
3150 | (void) manager_setup_timezone_change(m); | |
3151 | ||
3152 | /* Read the new timezone */ | |
3153 | tzset(); | |
3154 | ||
3155 | log_debug("Timezone has been changed (now: %s).", tzname[daylight]); | |
3156 | ||
90e74a66 | 3157 | HASHMAP_FOREACH(u, m->units) |
bbf5fd8e LP |
3158 | if (UNIT_VTABLE(u)->timezone_change) |
3159 | UNIT_VTABLE(u)->timezone_change(u); | |
3160 | ||
3161 | return 0; | |
3162 | } | |
3163 | ||
718db961 | 3164 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
99534007 | 3165 | Manager *m = ASSERT_PTR(userdata); |
8742514c | 3166 | |
718db961 | 3167 | assert(m->idle_pipe[2] == fd); |
8742514c | 3168 | |
8f41e6b6 ZJS |
3169 | /* There's at least one Type=idle child that just gave up on us waiting for the boot process to |
3170 | * complete. Let's now turn off any further console output if there's at least one service that needs | |
3171 | * console access, so that from now on our own output should not spill into that service's output | |
3172 | * anymore. After all, we support Type=idle only to beautify console output and it generally is set | |
3173 | * on services that want to own the console exclusively without our interference. */ | |
718db961 | 3174 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 3175 | |
30fd9a2d | 3176 | /* Acknowledge the child's request, and let all other children know too that they shouldn't wait |
8f41e6b6 | 3177 | * any longer by closing the pipes towards them, which is what they are waiting for. */ |
718db961 | 3178 | manager_close_idle_pipe(m); |
03b717a3 | 3179 | |
718db961 LP |
3180 | return 0; |
3181 | } | |
31a7eb86 | 3182 | |
718db961 | 3183 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
99534007 | 3184 | Manager *m = ASSERT_PTR(userdata); |
fd08a840 | 3185 | int r; |
31a7eb86 | 3186 | |
fd08a840 | 3187 | assert(source); |
9152c765 | 3188 | |
718db961 | 3189 | manager_print_jobs_in_progress(m); |
fd08a840 | 3190 | |
39cf0351 | 3191 | r = sd_event_source_set_time_relative(source, JOBS_IN_PROGRESS_PERIOD_USEC); |
fd08a840 ZJS |
3192 | if (r < 0) |
3193 | return r; | |
3194 | ||
3195 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
3196 | } |
3197 | ||
3198 | int manager_loop(Manager *m) { | |
8c227e7f | 3199 | RateLimit rl = { .interval = 1*USEC_PER_SEC, .burst = 50000 }; |
9152c765 | 3200 | int r; |
9152c765 LP |
3201 | |
3202 | assert(m); | |
1fb70e66 | 3203 | assert(m->objective == MANAGER_OK); /* Ensure manager_startup() has been called */ |
9152c765 | 3204 | |
b0c918b9 LP |
3205 | manager_check_finished(m); |
3206 | ||
575b300b LP |
3207 | /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */ |
3208 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
e96d6be7 | 3209 | if (r < 0) |
575b300b | 3210 | return log_error_errno(r, "Failed to enable SIGCHLD event source: %m"); |
a4312405 | 3211 | |
af41e508 | 3212 | while (m->objective == MANAGER_OK) { |
9152c765 | 3213 | |
ae4a0ec4 | 3214 | (void) watchdog_ping(); |
e96d6be7 | 3215 | |
7994ac1d | 3216 | if (!ratelimit_below(&rl)) { |
ea430986 LP |
3217 | /* Yay, something is going seriously wrong, pause a little */ |
3218 | log_warning("Looping too fast. Throttling execution a little."); | |
3219 | sleep(1); | |
3220 | } | |
3221 | ||
37a8e683 | 3222 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
3223 | continue; |
3224 | ||
c5a97ed1 LP |
3225 | if (manager_dispatch_gc_job_queue(m) > 0) |
3226 | continue; | |
3227 | ||
3228 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
3229 | continue; |
3230 | ||
cf1265e1 | 3231 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 3232 | continue; |
034c6ed7 | 3233 | |
91a6073e | 3234 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
3235 | continue; |
3236 | ||
0bc488c9 LP |
3237 | if (manager_dispatch_start_when_upheld_queue(m) > 0) |
3238 | continue; | |
3239 | ||
56c59592 LP |
3240 | if (manager_dispatch_stop_when_bound_queue(m) > 0) |
3241 | continue; | |
3242 | ||
a3c1168a LP |
3243 | if (manager_dispatch_stop_when_unneeded_queue(m) > 0) |
3244 | continue; | |
3245 | ||
6ac62d61 LP |
3246 | if (manager_dispatch_release_resources_queue(m) > 0) |
3247 | continue; | |
3248 | ||
c1e1601e | 3249 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 3250 | continue; |
ea430986 | 3251 | |
c5f8a179 | 3252 | /* Sleep for watchdog runtime wait time */ |
12663295 | 3253 | r = sd_event_run(m->event, watchdog_runtime_wait()); |
23bbb0de MS |
3254 | if (r < 0) |
3255 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 3256 | } |
957ca890 | 3257 | |
af41e508 | 3258 | return m->objective; |
83c60c9f | 3259 | } |
ea430986 | 3260 | |
718db961 | 3261 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 3262 | _cleanup_free_ char *n = NULL; |
4b58153d | 3263 | sd_id128_t invocation_id; |
ea430986 | 3264 | Unit *u; |
80fbf05e | 3265 | int r; |
ea430986 LP |
3266 | |
3267 | assert(m); | |
3268 | assert(s); | |
3269 | assert(_u); | |
3270 | ||
ede3a796 LP |
3271 | r = unit_name_from_dbus_path(s, &n); |
3272 | if (r < 0) | |
3273 | return r; | |
ea430986 | 3274 | |
8f41e6b6 ZJS |
3275 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then |
3276 | * we use it as invocation ID. */ | |
4b58153d LP |
3277 | r = sd_id128_from_string(n, &invocation_id); |
3278 | if (r >= 0) { | |
3279 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
3280 | if (u) { | |
3281 | *_u = u; | |
3282 | return 0; | |
3283 | } | |
3284 | ||
930c124c ZJS |
3285 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, |
3286 | "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", | |
3287 | SD_ID128_FORMAT_VAL(invocation_id)); | |
4b58153d LP |
3288 | } |
3289 | ||
00c83b43 | 3290 | /* If this didn't work, we check if this is a unit name */ |
930c124c ZJS |
3291 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
3292 | _cleanup_free_ char *nn = NULL; | |
3293 | ||
3294 | nn = cescape(n); | |
3295 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, | |
3296 | "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn)); | |
3297 | } | |
00c83b43 | 3298 | |
80fbf05e | 3299 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
3300 | if (r < 0) |
3301 | return r; | |
ea430986 LP |
3302 | |
3303 | *_u = u; | |
ea430986 LP |
3304 | return 0; |
3305 | } | |
86fbf370 LP |
3306 | |
3307 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 3308 | const char *p; |
86fbf370 | 3309 | unsigned id; |
718db961 | 3310 | Job *j; |
86fbf370 LP |
3311 | int r; |
3312 | ||
3313 | assert(m); | |
3314 | assert(s); | |
3315 | assert(_j); | |
3316 | ||
718db961 LP |
3317 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
3318 | if (!p) | |
86fbf370 LP |
3319 | return -EINVAL; |
3320 | ||
718db961 | 3321 | r = safe_atou(p, &id); |
8742514c | 3322 | if (r < 0) |
86fbf370 LP |
3323 | return r; |
3324 | ||
8742514c LP |
3325 | j = manager_get_job(m, id); |
3326 | if (!j) | |
86fbf370 LP |
3327 | return -ENOENT; |
3328 | ||
3329 | *_j = j; | |
3330 | ||
3331 | return 0; | |
3332 | } | |
dfcd764e | 3333 | |
4927fcae | 3334 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 3335 | |
349cc4a5 | 3336 | #if HAVE_AUDIT |
2ba11090 | 3337 | _cleanup_free_ char *p = NULL; |
0aa281df | 3338 | const char *msg; |
7410616c | 3339 | int audit_fd, r; |
e537352b | 3340 | |
463d0d15 | 3341 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
3342 | return; |
3343 | ||
c1165f82 LP |
3344 | audit_fd = get_audit_fd(); |
3345 | if (audit_fd < 0) | |
e537352b LP |
3346 | return; |
3347 | ||
bbd3a7ba LP |
3348 | /* Don't generate audit events if the service was already |
3349 | * started and we're just deserializing */ | |
2c289ea8 | 3350 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
3351 | return; |
3352 | ||
ac155bb8 | 3353 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
3354 | return; |
3355 | ||
7410616c LP |
3356 | r = unit_name_to_prefix_and_instance(u->id, &p); |
3357 | if (r < 0) { | |
3358 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
3359 | return; |
3360 | } | |
3361 | ||
63c372cb | 3362 | msg = strjoina("unit=", p); |
0aa281df LP |
3363 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
3364 | if (errno == EPERM) | |
391ade86 | 3365 | /* We aren't allowed to send audit messages? |
44785992 | 3366 | * Then let's not retry again. */ |
c1165f82 | 3367 | close_audit_fd(); |
0aa281df | 3368 | else |
56f64d95 | 3369 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 3370 | } |
4927fcae | 3371 | #endif |
e537352b | 3372 | |
e537352b LP |
3373 | } |
3374 | ||
e983b760 | 3375 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 3376 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 | 3377 | _cleanup_free_ char *message = NULL; |
254d1313 | 3378 | _cleanup_close_ int fd = -EBADF; |
fc2fffe7 | 3379 | int n = 0; |
e983b760 LP |
3380 | |
3381 | /* Don't generate plymouth events if the service was already | |
3382 | * started and we're just deserializing */ | |
2c289ea8 | 3383 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
3384 | return; |
3385 | ||
463d0d15 | 3386 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
3387 | return; |
3388 | ||
75f86906 | 3389 | if (detect_container() > 0) |
3772995a LP |
3390 | return; |
3391 | ||
ec2ce0c5 | 3392 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
3393 | return; |
3394 | ||
3395 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
3396 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
3397 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
3398 | if (fd < 0) { | |
56f64d95 | 3399 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
3400 | return; |
3401 | } | |
3402 | ||
fc2fffe7 | 3403 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
f60a028a | 3404 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3405 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 3406 | return; |
e983b760 LP |
3407 | } |
3408 | ||
305757d8 ZJS |
3409 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) |
3410 | return (void) log_oom(); | |
e983b760 LP |
3411 | |
3412 | errno = 0; | |
2ba11090 | 3413 | if (write(fd, message, n + 1) != n + 1) |
f60a028a | 3414 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3415 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
3416 | } |
3417 | ||
986935cf FB |
3418 | usec_t manager_get_watchdog(Manager *m, WatchdogType t) { |
3419 | assert(m); | |
3420 | ||
3421 | if (MANAGER_IS_USER(m)) | |
3422 | return USEC_INFINITY; | |
3423 | ||
3424 | if (timestamp_is_set(m->watchdog_overridden[t])) | |
3425 | return m->watchdog_overridden[t]; | |
3426 | ||
3427 | return m->watchdog[t]; | |
3428 | } | |
3429 | ||
3430 | void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout) { | |
986935cf FB |
3431 | |
3432 | assert(m); | |
3433 | ||
3434 | if (MANAGER_IS_USER(m)) | |
3435 | return; | |
3436 | ||
3437 | if (m->watchdog[t] == timeout) | |
3438 | return; | |
3439 | ||
5717062e | 3440 | if (t == WATCHDOG_RUNTIME) { |
f16890f8 FB |
3441 | if (!timestamp_is_set(m->watchdog_overridden[WATCHDOG_RUNTIME])) |
3442 | (void) watchdog_setup(timeout); | |
5717062e CK |
3443 | } else if (t == WATCHDOG_PRETIMEOUT) |
3444 | if (m->watchdog_overridden[WATCHDOG_PRETIMEOUT] == USEC_INFINITY) | |
3445 | (void) watchdog_setup_pretimeout(timeout); | |
986935cf | 3446 | |
61927b9f | 3447 | m->watchdog[t] = timeout; |
986935cf FB |
3448 | } |
3449 | ||
aac47032 | 3450 | void manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout) { |
986935cf FB |
3451 | |
3452 | assert(m); | |
3453 | ||
3454 | if (MANAGER_IS_USER(m)) | |
aac47032 | 3455 | return; |
986935cf FB |
3456 | |
3457 | if (m->watchdog_overridden[t] == timeout) | |
aac47032 | 3458 | return; |
986935cf FB |
3459 | |
3460 | if (t == WATCHDOG_RUNTIME) { | |
2628b98f | 3461 | usec_t usec = timestamp_is_set(timeout) ? timeout : m->watchdog[t]; |
986935cf | 3462 | |
f16890f8 | 3463 | (void) watchdog_setup(usec); |
5717062e CK |
3464 | } else if (t == WATCHDOG_PRETIMEOUT) |
3465 | (void) watchdog_setup_pretimeout(timeout); | |
986935cf | 3466 | |
61927b9f | 3467 | m->watchdog_overridden[t] = timeout; |
986935cf FB |
3468 | } |
3469 | ||
aff3a9e1 LB |
3470 | int manager_set_watchdog_pretimeout_governor(Manager *m, const char *governor) { |
3471 | _cleanup_free_ char *p = NULL; | |
3472 | int r; | |
3473 | ||
3474 | assert(m); | |
3475 | ||
3476 | if (MANAGER_IS_USER(m)) | |
3477 | return 0; | |
3478 | ||
3479 | if (streq_ptr(m->watchdog_pretimeout_governor, governor)) | |
3480 | return 0; | |
3481 | ||
3482 | p = strdup(governor); | |
3483 | if (!p) | |
3484 | return -ENOMEM; | |
3485 | ||
3486 | r = watchdog_setup_pretimeout_governor(governor); | |
3487 | if (r < 0) | |
3488 | return r; | |
3489 | ||
3490 | return free_and_replace(m->watchdog_pretimeout_governor, p); | |
3491 | } | |
3492 | ||
3493 | int manager_override_watchdog_pretimeout_governor(Manager *m, const char *governor) { | |
3494 | _cleanup_free_ char *p = NULL; | |
3495 | int r; | |
3496 | ||
3497 | assert(m); | |
3498 | ||
3499 | if (MANAGER_IS_USER(m)) | |
3500 | return 0; | |
3501 | ||
3502 | if (streq_ptr(m->watchdog_pretimeout_governor_overridden, governor)) | |
3503 | return 0; | |
3504 | ||
3505 | p = strdup(governor); | |
3506 | if (!p) | |
3507 | return -ENOMEM; | |
3508 | ||
3509 | r = watchdog_setup_pretimeout_governor(governor); | |
3510 | if (r < 0) | |
3511 | return r; | |
3512 | ||
3513 | return free_and_replace(m->watchdog_pretimeout_governor_overridden, p); | |
3514 | } | |
3515 | ||
a16e1123 | 3516 | int manager_reload(Manager *m) { |
d7ac0952 | 3517 | _unused_ _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
51d122af | 3518 | _cleanup_fdset_free_ FDSet *fds = NULL; |
6a33af40 LP |
3519 | _cleanup_fclose_ FILE *f = NULL; |
3520 | int r; | |
a16e1123 LP |
3521 | |
3522 | assert(m); | |
3523 | ||
07719a21 LP |
3524 | r = manager_open_serialization(m, &f); |
3525 | if (r < 0) | |
6a33af40 | 3526 | return log_error_errno(r, "Failed to create serialization file: %m"); |
38c52d46 | 3527 | |
07719a21 | 3528 | fds = fdset_new(); |
6a33af40 LP |
3529 | if (!fds) |
3530 | return log_oom(); | |
3531 | ||
d147e2b6 ZJS |
3532 | /* We are officially in reload mode from here on. */ |
3533 | reloading = manager_reloading_start(m); | |
a16e1123 | 3534 | |
b3680f49 | 3535 | r = manager_serialize(m, f, fds, false); |
d147e2b6 | 3536 | if (r < 0) |
d68c645b | 3537 | return r; |
a16e1123 | 3538 | |
d147e2b6 ZJS |
3539 | if (fseeko(f, 0, SEEK_SET) < 0) |
3540 | return log_error_errno(errno, "Failed to seek to beginning of serialization: %m"); | |
a16e1123 | 3541 | |
6a33af40 | 3542 | /* 💀 This is the point of no return, from here on there is no way back. 💀 */ |
d147e2b6 | 3543 | reloading = NULL; |
6a33af40 LP |
3544 | |
3545 | bus_manager_send_reloading(m, true); | |
3546 | ||
3547 | /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users | |
3548 | * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need | |
7802194a | 3549 | * it. */ |
6a33af40 | 3550 | |
a16e1123 | 3551 | manager_clear_jobs_and_units(m); |
07a78643 | 3552 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 3553 | lookup_paths_free(&m->lookup_paths); |
e76506b7 | 3554 | exec_shared_runtime_vacuum(m); |
29206d46 | 3555 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
3556 | m->uid_refs = hashmap_free(m->uid_refs); |
3557 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 3558 | |
4870133b | 3559 | r = lookup_paths_init_or_warn(&m->lookup_paths, m->runtime_scope, 0, NULL); |
6a33af40 | 3560 | if (r < 0) |
99aad9a2 | 3561 | return r; |
5a1e9937 | 3562 | |
6a33af40 LP |
3563 | (void) manager_run_environment_generators(m); |
3564 | (void) manager_run_generators(m); | |
64691d20 | 3565 | |
581fef8d | 3566 | lookup_paths_log(&m->lookup_paths); |
07719a21 | 3567 | |
91e0ee5f | 3568 | /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */ |
e8630e69 | 3569 | manager_free_unit_name_maps(m); |
5a1e9937 | 3570 | |
6a33af40 | 3571 | /* First, enumerate what we can from kernel and suchlike */ |
3ad2afb6 | 3572 | manager_enumerate_perpetual(m); |
ba64af90 | 3573 | manager_enumerate(m); |
a16e1123 LP |
3574 | |
3575 | /* Second, deserialize our stored data */ | |
6a33af40 LP |
3576 | r = manager_deserialize(m, f, fds); |
3577 | if (r < 0) | |
3578 | log_warning_errno(r, "Deserialization failed, proceeding anyway: %m"); | |
a16e1123 | 3579 | |
6a33af40 | 3580 | /* We don't need the serialization anymore */ |
62b0cbb3 | 3581 | f = safe_fclose(f); |
a16e1123 | 3582 | |
6a33af40 LP |
3583 | /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */ |
3584 | (void) manager_setup_notify(m); | |
3585 | (void) manager_setup_cgroups_agent(m); | |
3586 | (void) manager_setup_user_lookup_fd(m); | |
00d9ef85 | 3587 | |
a16e1123 | 3588 | /* Third, fire things up! */ |
007c6337 | 3589 | manager_coldplug(m); |
a16e1123 | 3590 | |
5197be06 LP |
3591 | /* Clean up runtime objects no longer referenced */ |
3592 | manager_vacuum(m); | |
e8a565cb | 3593 | |
3deed59a AA |
3594 | /* Clean up deserialized tracked clients */ |
3595 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
3596 | ||
6a33af40 | 3597 | /* Consider the reload process complete now. */ |
31dc1ca3 LP |
3598 | assert(m->n_reloading > 0); |
3599 | m->n_reloading--; | |
3600 | ||
5ce5e1ad | 3601 | manager_ready(m); |
8936a5e3 | 3602 | |
71445ae7 | 3603 | m->send_reloading_done = true; |
6a33af40 | 3604 | return 0; |
a16e1123 LP |
3605 | } |
3606 | ||
fdf20a31 | 3607 | void manager_reset_failed(Manager *m) { |
5632e374 | 3608 | Unit *u; |
5632e374 LP |
3609 | |
3610 | assert(m); | |
3611 | ||
90e74a66 | 3612 | HASHMAP_FOREACH(u, m->units) |
fdf20a31 | 3613 | unit_reset_failed(u); |
5632e374 LP |
3614 | } |
3615 | ||
31afa0a4 | 3616 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3617 | Unit *u; |
3618 | ||
3619 | assert(m); | |
3620 | assert(name); | |
3621 | ||
3622 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3623 | u = manager_get_unit(m, name); |
3624 | if (!u) | |
8f6df3fa LP |
3625 | return true; |
3626 | ||
31afa0a4 | 3627 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3628 | } |
3629 | ||
d8eb10d6 ZJS |
3630 | static void log_taint_string(Manager *m) { |
3631 | _cleanup_free_ char *taint = NULL; | |
3632 | ||
3633 | assert(m); | |
3634 | ||
3635 | if (MANAGER_IS_USER(m) || m->taint_logged) | |
3636 | return; | |
3637 | ||
3638 | m->taint_logged = true; /* only check for taint once */ | |
3639 | ||
3640 | taint = manager_taint_string(m); | |
3641 | if (isempty(taint)) | |
3642 | return; | |
3643 | ||
3644 | log_struct(LOG_NOTICE, | |
3645 | LOG_MESSAGE("System is tainted: %s", taint), | |
3646 | "TAINT=%s", taint, | |
a1230ff9 | 3647 | "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR); |
d8eb10d6 ZJS |
3648 | } |
3649 | ||
56dacdbc | 3650 | static void manager_notify_finished(Manager *m) { |
915b3753 | 3651 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3652 | |
638cece4 | 3653 | if (MANAGER_IS_TEST_RUN(m)) |
b0c918b9 LP |
3654 | return; |
3655 | ||
463d0d15 | 3656 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
dc3c9f5e ZJS |
3657 | char buf[FORMAT_TIMESPAN_MAX + STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX + STRLEN(" (loader) + ")] |
3658 | = {}; | |
3659 | char *p = buf; | |
3660 | size_t size = sizeof buf; | |
e03ae661 | 3661 | |
9f9f0342 LP |
3662 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3663 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3664 | * negative values. */ |
3665 | ||
9f9f0342 LP |
3666 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3667 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3668 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3669 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3670 | |
dd1db3c2 | 3671 | if (firmware_usec > 0) |
5291f26d | 3672 | size = strpcpyf(&p, size, "%s (firmware) + ", FORMAT_TIMESPAN(firmware_usec, USEC_PER_MSEC)); |
dd1db3c2 | 3673 | if (loader_usec > 0) |
5291f26d | 3674 | size = strpcpyf(&p, size, "%s (loader) + ", FORMAT_TIMESPAN(loader_usec, USEC_PER_MSEC)); |
dd1db3c2 | 3675 | |
9f9f0342 | 3676 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3677 | |
7802194a | 3678 | /* The initrd case on bare-metal */ |
9f9f0342 LP |
3679 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; |
3680 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3681 | |
e12919e8 | 3682 | log_struct(LOG_INFO, |
2b044526 | 3683 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3684 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3685 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3686 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
dd1db3c2 YW |
3687 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3688 | buf, | |
5291f26d ZJS |
3689 | FORMAT_TIMESPAN(kernel_usec, USEC_PER_MSEC), |
3690 | FORMAT_TIMESPAN(initrd_usec, USEC_PER_MSEC), | |
3691 | FORMAT_TIMESPAN(userspace_usec, USEC_PER_MSEC), | |
3692 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); | |
18fa6b27 | 3693 | } else { |
7802194a | 3694 | /* The initrd-less case on bare-metal */ |
9f9f0342 LP |
3695 | |
3696 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3697 | initrd_usec = 0; |
3698 | ||
81270860 | 3699 | log_struct(LOG_INFO, |
2b044526 | 3700 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3701 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3702 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
dd1db3c2 YW |
3703 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.", |
3704 | buf, | |
5291f26d ZJS |
3705 | FORMAT_TIMESPAN(kernel_usec, USEC_PER_MSEC), |
3706 | FORMAT_TIMESPAN(userspace_usec, USEC_PER_MSEC), | |
3707 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); | |
e12919e8 LP |
3708 | } |
3709 | } else { | |
4adf314b | 3710 | /* The container and --user case */ |
e12919e8 | 3711 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3712 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3713 | |
3714 | log_struct(LOG_INFO, | |
2b044526 | 3715 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3716 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca | 3717 | LOG_MESSAGE("Startup finished in %s.", |
5291f26d | 3718 | FORMAT_TIMESPAN(total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3719 | } |
b0c918b9 | 3720 | |
718db961 | 3721 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 | 3722 | |
d8eb10d6 | 3723 | log_taint_string(m); |
b0c918b9 LP |
3724 | } |
3725 | ||
6d932659 | 3726 | static void user_manager_send_ready(Manager *m) { |
4bf4f50f ZJS |
3727 | int r; |
3728 | ||
4adf314b LP |
3729 | assert(m); |
3730 | ||
3731 | /* We send READY=1 on reaching basic.target only when running in --user mode. */ | |
3732 | if (!MANAGER_IS_USER(m) || m->ready_sent) | |
3733 | return; | |
3734 | ||
d4341b76 ZJS |
3735 | r = sd_notify(false, |
3736 | "READY=1\n" | |
3737 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
4bf4f50f ZJS |
3738 | if (r < 0) |
3739 | log_warning_errno(r, "Failed to send readiness notification, ignoring: %m"); | |
3740 | ||
6d932659 ZJS |
3741 | m->ready_sent = true; |
3742 | m->status_ready = false; | |
3743 | } | |
3744 | ||
3745 | static void manager_send_ready(Manager *m) { | |
4bf4f50f ZJS |
3746 | int r; |
3747 | ||
6d932659 ZJS |
3748 | if (m->ready_sent && m->status_ready) |
3749 | /* Skip the notification if nothing changed. */ | |
3750 | return; | |
3751 | ||
028f7d3a ZJS |
3752 | r = sd_notify(false, |
3753 | "READY=1\n" | |
3754 | "STATUS=Ready."); | |
4bf4f50f ZJS |
3755 | if (r < 0) |
3756 | log_full_errno(m->ready_sent ? LOG_DEBUG : LOG_WARNING, r, | |
3757 | "Failed to send readiness notification, ignoring: %m"); | |
3758 | ||
6d932659 | 3759 | m->ready_sent = m->status_ready = true; |
4adf314b LP |
3760 | } |
3761 | ||
3762 | static void manager_check_basic_target(Manager *m) { | |
3763 | Unit *u; | |
3764 | ||
3765 | assert(m); | |
3766 | ||
3767 | /* Small shortcut */ | |
3768 | if (m->ready_sent && m->taint_logged) | |
3769 | return; | |
3770 | ||
3771 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3772 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3773 | return; | |
3774 | ||
3775 | /* For user managers, send out READY=1 as soon as we reach basic.target */ | |
6d932659 | 3776 | user_manager_send_ready(m); |
4adf314b LP |
3777 | |
3778 | /* Log the taint string as soon as we reach basic.target */ | |
3779 | log_taint_string(m); | |
3780 | } | |
3781 | ||
56dacdbc | 3782 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3783 | assert(m); |
3784 | ||
2c289ea8 | 3785 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3786 | return; |
3787 | ||
4259d202 LP |
3788 | /* Verify that we have entered the event loop already, and not left it again. */ |
3789 | if (!MANAGER_IS_RUNNING(m)) | |
9771b62d LP |
3790 | return; |
3791 | ||
4adf314b | 3792 | manager_check_basic_target(m); |
0c2826c6 | 3793 | |
56dacdbc | 3794 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3795 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3796 | /* Ignore any failure, this is only for feedback */ |
1b4154a8 ZJS |
3797 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, |
3798 | manager_watch_jobs_next_time(m)); | |
56dacdbc ZJS |
3799 | return; |
3800 | } | |
3801 | ||
a4ac27c1 ZJS |
3802 | /* The jobs hashmap tends to grow a lot during boot, and then it's not reused until shutdown. Let's |
3803 | kill the hashmap if it is relatively large. */ | |
3804 | if (hashmap_buckets(m->jobs) > hashmap_size(m->units) / 10) | |
3805 | m->jobs = hashmap_free(m->jobs); | |
3806 | ||
6d932659 ZJS |
3807 | manager_send_ready(m); |
3808 | ||
9c1b17c3 YW |
3809 | /* Notify Type=idle units that we are done now */ |
3810 | manager_close_idle_pipe(m); | |
3811 | ||
6d932659 ZJS |
3812 | if (MANAGER_IS_FINISHED(m)) |
3813 | return; | |
3814 | ||
7365a296 | 3815 | manager_flip_auto_status(m, false, "boot finished"); |
56dacdbc | 3816 | |
56dacdbc | 3817 | /* Turn off confirm spawn now */ |
7d5ceb64 | 3818 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
3819 | |
3820 | /* No need to update ask password status when we're going non-interactive */ | |
3821 | manager_close_ask_password(m); | |
3822 | ||
3823 | /* This is no longer the first boot */ | |
3824 | manager_set_first_boot(m, false); | |
3825 | ||
9f9f0342 | 3826 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
3827 | |
3828 | manager_notify_finished(m); | |
3829 | ||
e7ab4d1a | 3830 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3831 | } |
3832 | ||
dd0ab174 LP |
3833 | void manager_send_reloading(Manager *m) { |
3834 | assert(m); | |
3835 | ||
3836 | /* Let whoever invoked us know that we are now reloading */ | |
3837 | (void) sd_notifyf(/* unset= */ false, | |
3838 | "RELOADING=1\n" | |
3839 | "MONOTONIC_USEC=" USEC_FMT "\n", now(CLOCK_MONOTONIC)); | |
3840 | ||
3841 | /* And ensure that we'll send READY=1 again as soon as we are ready again */ | |
3842 | m->ready_sent = false; | |
3843 | } | |
3844 | ||
64691d20 | 3845 | static bool generator_path_any(const char* const* paths) { |
64691d20 ZJS |
3846 | bool found = false; |
3847 | ||
3848 | /* Optimize by skipping the whole process by not creating output directories | |
3849 | * if no generators are found. */ | |
2034c8b8 | 3850 | STRV_FOREACH(path, paths) |
64691d20 ZJS |
3851 | if (access(*path, F_OK) == 0) |
3852 | found = true; | |
3853 | else if (errno != ENOENT) | |
3854 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
3855 | ||
3856 | return found; | |
3857 | } | |
3858 | ||
64691d20 ZJS |
3859 | static int manager_run_environment_generators(Manager *m) { |
3860 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
cccf5703 | 3861 | _cleanup_strv_free_ char **paths = NULL; |
1ad6e8b3 LP |
3862 | void* args[] = { |
3863 | [STDOUT_GENERATE] = &tmp, | |
3864 | [STDOUT_COLLECT] = &tmp, | |
3865 | [STDOUT_CONSUME] = &m->transient_environment, | |
3866 | }; | |
e3b8d063 | 3867 | int r; |
64691d20 | 3868 | |
638cece4 | 3869 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
e0a3da1f ZJS |
3870 | return 0; |
3871 | ||
361cacf4 | 3872 | paths = env_generator_binary_paths(m->runtime_scope); |
cccf5703 BB |
3873 | if (!paths) |
3874 | return log_oom(); | |
64691d20 | 3875 | |
cccf5703 | 3876 | if (!generator_path_any((const char* const*) paths)) |
64691d20 ZJS |
3877 | return 0; |
3878 | ||
2053593f | 3879 | WITH_UMASK(0022) |
cccf5703 | 3880 | r = execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, gather_environment, |
43f565c6 YW |
3881 | args, NULL, m->transient_environment, |
3882 | EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS | EXEC_DIR_SET_SYSTEMD_EXEC_PID); | |
e3b8d063 | 3883 | return r; |
64691d20 ZJS |
3884 | } |
3885 | ||
82c5db16 LP |
3886 | static int build_generator_environment(Manager *m, char ***ret) { |
3887 | _cleanup_strv_free_ char **nl = NULL; | |
3888 | Virtualization v; | |
3889 | int r; | |
3890 | ||
3891 | assert(m); | |
3892 | assert(ret); | |
3893 | ||
3894 | /* Generators oftentimes want to know some basic facts about the environment they run in, in order to | |
3895 | * adjust generated units to that. Let's pass down some bits of information that are easy for us to | |
3896 | * determine (but a bit harder for generator scripts to determine), as environment variables. */ | |
3897 | ||
3898 | nl = strv_copy(m->transient_environment); | |
3899 | if (!nl) | |
3900 | return -ENOMEM; | |
3901 | ||
4870133b | 3902 | r = strv_env_assign(&nl, "SYSTEMD_SCOPE", runtime_scope_to_string(m->runtime_scope)); |
82c5db16 LP |
3903 | if (r < 0) |
3904 | return r; | |
3905 | ||
3906 | if (MANAGER_IS_SYSTEM(m)) { | |
3907 | /* Note that $SYSTEMD_IN_INITRD may be used to override the initrd detection in much of our | |
3908 | * codebase. This is hence more than purely informational. It will shortcut detection of the | |
3909 | * initrd state if generators invoke our own tools. But that's OK, as it would come to the | |
3910 | * same results (hopefully). */ | |
3911 | r = strv_env_assign(&nl, "SYSTEMD_IN_INITRD", one_zero(in_initrd())); | |
3912 | if (r < 0) | |
3913 | return r; | |
3914 | ||
3915 | if (m->first_boot >= 0) { | |
3916 | r = strv_env_assign(&nl, "SYSTEMD_FIRST_BOOT", one_zero(m->first_boot)); | |
3917 | if (r < 0) | |
3918 | return r; | |
3919 | } | |
3920 | } | |
3921 | ||
3922 | v = detect_virtualization(); | |
3923 | if (v < 0) | |
3924 | log_debug_errno(v, "Failed to detect virtualization, ignoring: %m"); | |
3925 | else if (v > 0) { | |
3926 | const char *s; | |
3927 | ||
3928 | s = strjoina(VIRTUALIZATION_IS_VM(v) ? "vm:" : | |
3929 | VIRTUALIZATION_IS_CONTAINER(v) ? "container:" : ":", | |
3930 | virtualization_to_string(v)); | |
3931 | ||
3932 | r = strv_env_assign(&nl, "SYSTEMD_VIRTUALIZATION", s); | |
3933 | if (r < 0) | |
3934 | return r; | |
3935 | } | |
3936 | ||
3937 | r = strv_env_assign(&nl, "SYSTEMD_ARCHITECTURE", architecture_to_string(uname_architecture())); | |
3938 | if (r < 0) | |
3939 | return r; | |
3940 | ||
3941 | *ret = TAKE_PTR(nl); | |
3942 | return 0; | |
3943 | } | |
3944 | ||
ca6ce62d ZJS |
3945 | static int manager_execute_generators(Manager *m, char **paths, bool remount_ro) { |
3946 | _cleanup_strv_free_ char **ge = NULL; | |
3947 | const char *argv[] = { | |
3948 | NULL, /* Leave this empty, execute_directory() will fill something in */ | |
3949 | m->lookup_paths.generator, | |
3950 | m->lookup_paths.generator_early, | |
3951 | m->lookup_paths.generator_late, | |
3952 | NULL, | |
3953 | }; | |
3954 | int r; | |
3955 | ||
3956 | r = build_generator_environment(m, &ge); | |
3957 | if (r < 0) | |
3958 | return log_error_errno(r, "Failed to build generator environment: %m"); | |
3959 | ||
3960 | if (remount_ro) { | |
3961 | /* Remount most of the filesystem tree read-only. We leave /sys/ as-is, because our code | |
3962 | * checks whether it is read-only to detect containerized execution environments. We leave | |
3963 | * /run/ as-is too, because that's where our output goes. We also leave /proc/ and /dev/shm/ | |
3964 | * because they're API, and /tmp/ that safe_fork() mounted for us. | |
3965 | */ | |
3966 | r = bind_remount_recursive("/", MS_RDONLY, MS_RDONLY, | |
3967 | STRV_MAKE("/sys", "/run", "/proc", "/dev/shm", "/tmp")); | |
3968 | if (r < 0) | |
3969 | log_warning_errno(r, "Read-only bind remount failed, ignoring: %m"); | |
3970 | } | |
3971 | ||
3972 | BLOCK_WITH_UMASK(0022); | |
3973 | return execute_directories( | |
3974 | (const char* const*) paths, | |
3975 | DEFAULT_TIMEOUT_USEC, | |
3976 | /* callbacks= */ NULL, /* callback_args= */ NULL, | |
3977 | (char**) argv, | |
3978 | ge, | |
3979 | EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS | EXEC_DIR_SET_SYSTEMD_EXEC_PID); | |
3980 | } | |
3981 | ||
e801700e | 3982 | static int manager_run_generators(Manager *m) { |
b8fba0cd | 3983 | ForkFlags flags = FORK_RESET_SIGNALS | FORK_WAIT | FORK_NEW_MOUNTNS | FORK_MOUNTNS_SLAVE; |
ca6ce62d | 3984 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 3985 | int r; |
5a1e9937 LP |
3986 | |
3987 | assert(m); | |
3988 | ||
638cece4 | 3989 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
e0a3da1f ZJS |
3990 | return 0; |
3991 | ||
4870133b | 3992 | paths = generator_binary_paths(m->runtime_scope); |
e801700e ZJS |
3993 | if (!paths) |
3994 | return log_oom(); | |
5a1e9937 | 3995 | |
64691d20 ZJS |
3996 | if (!generator_path_any((const char* const*) paths)) |
3997 | return 0; | |
5a1e9937 | 3998 | |
cd64fd56 | 3999 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
7eb4f326 LP |
4000 | if (r < 0) { |
4001 | log_error_errno(r, "Failed to create generator directories: %m"); | |
07719a21 | 4002 | goto finish; |
7eb4f326 | 4003 | } |
5a1e9937 | 4004 | |
ca6ce62d ZJS |
4005 | /* If we are the system manager, we fork and invoke the generators in a sanitized mount namespace. If |
4006 | * we are the user manager, let's just execute the generators directly. We might not have the | |
4007 | * necessary privileges, and the system manager has already mounted /tmp/ and everything else for us. | |
4008 | */ | |
4009 | if (MANAGER_IS_USER(m)) { | |
4010 | r = manager_execute_generators(m, paths, /* remount_ro= */ false); | |
82c5db16 LP |
4011 | goto finish; |
4012 | } | |
5a1e9937 | 4013 | |
b8fba0cd LB |
4014 | /* On some systems /tmp/ doesn't exist, and on some other systems we cannot create it at all. Avoid |
4015 | * trying to mount a private tmpfs on it as there's no one size fits all. */ | |
4016 | if (is_dir("/tmp", /* follow= */ false) > 0) | |
4017 | flags |= FORK_PRIVATE_TMP; | |
4018 | ||
4019 | r = safe_fork("(sd-gens)", flags, NULL); | |
ca6ce62d ZJS |
4020 | if (r == 0) { |
4021 | r = manager_execute_generators(m, paths, /* remount_ro= */ true); | |
4022 | _exit(r >= 0 ? EXIT_SUCCESS : EXIT_FAILURE); | |
4023 | } | |
a2275dcb YW |
4024 | if (r < 0) { |
4025 | if (!ERRNO_IS_PRIVILEGE(r)) { | |
4026 | log_error_errno(r, "Failed to fork off sandboxing environment for executing generators: %m"); | |
4027 | goto finish; | |
4028 | } | |
4029 | ||
4030 | /* Failed to fork with new mount namespace? Maybe, running in a container environment with | |
4031 | * seccomp or without capability. */ | |
4032 | log_debug_errno(r, | |
4033 | "Failed to fork off sandboxing environment for executing generators. " | |
4034 | "Falling back to execute generators without sandboxing: %m"); | |
4035 | r = manager_execute_generators(m, paths, /* remount_ro= */ false); | |
4036 | } | |
5a1e9937 | 4037 | |
718db961 | 4038 | finish: |
cd64fd56 | 4039 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 4040 | return r; |
5a1e9937 LP |
4041 | } |
4042 | ||
1ad6e8b3 LP |
4043 | int manager_transient_environment_add(Manager *m, char **plus) { |
4044 | char **a; | |
4045 | ||
4046 | assert(m); | |
4047 | ||
4048 | if (strv_isempty(plus)) | |
4049 | return 0; | |
4050 | ||
4ab3d29f | 4051 | a = strv_env_merge(m->transient_environment, plus); |
1ad6e8b3 | 4052 | if (!a) |
2fbbbf9a | 4053 | return log_oom(); |
1ad6e8b3 LP |
4054 | |
4055 | sanitize_environment(a); | |
4056 | ||
4057 | return strv_free_and_replace(m->transient_environment, a); | |
4058 | } | |
4059 | ||
4060 | int manager_client_environment_modify( | |
4061 | Manager *m, | |
4062 | char **minus, | |
4063 | char **plus) { | |
4064 | ||
718db961 | 4065 | char **a = NULL, **b = NULL, **l; |
1ad6e8b3 | 4066 | |
97d0e5f8 | 4067 | assert(m); |
bcd8e6d1 | 4068 | |
1ad6e8b3 LP |
4069 | if (strv_isempty(minus) && strv_isempty(plus)) |
4070 | return 0; | |
4071 | ||
4072 | l = m->client_environment; | |
bcd8e6d1 | 4073 | |
718db961 LP |
4074 | if (!strv_isempty(minus)) { |
4075 | a = strv_env_delete(l, 1, minus); | |
4076 | if (!a) | |
4077 | return -ENOMEM; | |
4078 | ||
4079 | l = a; | |
4080 | } | |
4081 | ||
4082 | if (!strv_isempty(plus)) { | |
4ab3d29f | 4083 | b = strv_env_merge(l, plus); |
aa9f8a30 AH |
4084 | if (!b) { |
4085 | strv_free(a); | |
718db961 | 4086 | return -ENOMEM; |
aa9f8a30 | 4087 | } |
bcd8e6d1 | 4088 | |
718db961 LP |
4089 | l = b; |
4090 | } | |
4091 | ||
1ad6e8b3 LP |
4092 | if (m->client_environment != l) |
4093 | strv_free(m->client_environment); | |
4094 | ||
718db961 LP |
4095 | if (a != l) |
4096 | strv_free(a); | |
4097 | if (b != l) | |
4098 | strv_free(b); | |
4099 | ||
1ad6e8b3 LP |
4100 | m->client_environment = sanitize_environment(l); |
4101 | return 0; | |
4102 | } | |
4103 | ||
4104 | int manager_get_effective_environment(Manager *m, char ***ret) { | |
4105 | char **l; | |
4106 | ||
4107 | assert(m); | |
4108 | assert(ret); | |
4109 | ||
4ab3d29f | 4110 | l = strv_env_merge(m->transient_environment, m->client_environment); |
1ad6e8b3 LP |
4111 | if (!l) |
4112 | return -ENOMEM; | |
f069efb4 | 4113 | |
1ad6e8b3 | 4114 | *ret = l; |
97d0e5f8 UTL |
4115 | return 0; |
4116 | } | |
4117 | ||
aa5ae971 ŁS |
4118 | int manager_set_default_smack_process_label(Manager *m, const char *label) { |
4119 | assert(m); | |
4120 | ||
4121 | #ifdef SMACK_DEFAULT_PROCESS_LABEL | |
4122 | if (!label) | |
4123 | return free_and_strdup(&m->default_smack_process_label, SMACK_DEFAULT_PROCESS_LABEL); | |
4124 | #endif | |
4125 | if (streq_ptr(label, "/")) | |
4126 | return free_and_strdup(&m->default_smack_process_label, NULL); | |
4127 | ||
4128 | return free_and_strdup(&m->default_smack_process_label, label); | |
4129 | } | |
4130 | ||
c93ff2e9 | 4131 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
c93ff2e9 FC |
4132 | assert(m); |
4133 | ||
5b10116e | 4134 | for (unsigned i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
4135 | m->rlimit[i] = mfree(m->rlimit[i]); |
4136 | ||
07719a21 LP |
4137 | if (!default_rlimit[i]) |
4138 | continue; | |
c93ff2e9 | 4139 | |
07719a21 LP |
4140 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
4141 | if (!m->rlimit[i]) | |
3ce40911 | 4142 | return log_oom(); |
c93ff2e9 FC |
4143 | } |
4144 | ||
4145 | return 0; | |
4146 | } | |
4147 | ||
8559b3b7 LP |
4148 | void manager_recheck_dbus(Manager *m) { |
4149 | assert(m); | |
4150 | ||
8f41e6b6 ZJS |
4151 | /* Connects to the bus if the dbus service and socket are running. If we are running in user mode |
4152 | * this is all it does. In system mode we'll also connect to the system bus (which will most likely | |
4153 | * just reuse the connection of the API bus). That's because the system bus after all runs as service | |
4154 | * of the system instance, while in the user instance we can assume it's already there. */ | |
8559b3b7 | 4155 | |
31dc1ca3 LP |
4156 | if (MANAGER_IS_RELOADING(m)) |
4157 | return; /* don't check while we are reloading… */ | |
4158 | ||
2b680534 | 4159 | if (manager_dbus_is_running(m, false)) { |
8559b3b7 LP |
4160 | (void) bus_init_api(m); |
4161 | ||
4162 | if (MANAGER_IS_SYSTEM(m)) | |
4163 | (void) bus_init_system(m); | |
4164 | } else { | |
4165 | (void) bus_done_api(m); | |
4166 | ||
4167 | if (MANAGER_IS_SYSTEM(m)) | |
4168 | (void) bus_done_system(m); | |
4169 | } | |
4170 | } | |
4171 | ||
d075092f | 4172 | static bool manager_journal_is_running(Manager *m) { |
f1dd0c3f LP |
4173 | Unit *u; |
4174 | ||
4175 | assert(m); | |
4176 | ||
638cece4 | 4177 | if (MANAGER_IS_TEST_RUN(m)) |
7d814a19 LP |
4178 | return false; |
4179 | ||
d075092f | 4180 | /* If we are the user manager we can safely assume that the journal is up */ |
463d0d15 | 4181 | if (!MANAGER_IS_SYSTEM(m)) |
d075092f | 4182 | return true; |
f1dd0c3f | 4183 | |
d075092f | 4184 | /* Check that the socket is not only up, but in RUNNING state */ |
731a676c | 4185 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
d075092f LP |
4186 | if (!u) |
4187 | return false; | |
4188 | if (SOCKET(u)->state != SOCKET_RUNNING) | |
4189 | return false; | |
f1dd0c3f | 4190 | |
d075092f | 4191 | /* Similar, check if the daemon itself is fully up, too */ |
731a676c | 4192 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
d075092f LP |
4193 | if (!u) |
4194 | return false; | |
217677ab | 4195 | if (!IN_SET(SERVICE(u)->state, SERVICE_RELOAD, SERVICE_RUNNING)) |
d075092f LP |
4196 | return false; |
4197 | ||
4198 | return true; | |
4199 | } | |
4200 | ||
6123dfaa ZJS |
4201 | void disable_printk_ratelimit(void) { |
4202 | /* Disable kernel's printk ratelimit. | |
4203 | * | |
4204 | * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging | |
4205 | * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line | |
4206 | * setting takes precedence. */ | |
4207 | int r; | |
4208 | ||
4209 | r = sysctl_write("kernel/printk_devkmsg", "on"); | |
4210 | if (r < 0) | |
4211 | log_debug_errno(r, "Failed to set sysctl kernel.printk_devkmsg=on: %m"); | |
4212 | } | |
4213 | ||
d075092f LP |
4214 | void manager_recheck_journal(Manager *m) { |
4215 | ||
4216 | assert(m); | |
4217 | ||
4218 | /* Don't bother with this unless we are in the special situation of being PID 1 */ | |
4219 | if (getpid_cached() != 1) | |
731a676c | 4220 | return; |
f1dd0c3f | 4221 | |
31dc1ca3 LP |
4222 | /* Don't check this while we are reloading, things might still change */ |
4223 | if (MANAGER_IS_RELOADING(m)) | |
4224 | return; | |
4225 | ||
8f41e6b6 ZJS |
4226 | /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If |
4227 | * the journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we | |
4228 | * might trigger an activation ourselves we can't fulfill. */ | |
cedf5088 | 4229 | log_set_prohibit_ipc(!manager_journal_is_running(m)); |
cc2b9e6b | 4230 | log_open(); |
f1dd0c3f LP |
4231 | } |
4232 | ||
44a41954 FB |
4233 | static ShowStatus manager_get_show_status(Manager *m) { |
4234 | assert(m); | |
4235 | ||
4236 | if (MANAGER_IS_USER(m)) | |
4237 | return _SHOW_STATUS_INVALID; | |
4238 | ||
4239 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) | |
4240 | return m->show_status_overridden; | |
4241 | ||
4242 | return m->show_status; | |
4243 | } | |
4244 | ||
4245 | bool manager_get_show_status_on(Manager *m) { | |
4246 | assert(m); | |
4247 | ||
4248 | return show_status_on(manager_get_show_status(m)); | |
4249 | } | |
b309078a | 4250 | |
3ceb3471 FB |
4251 | static void set_show_status_marker(bool b) { |
4252 | if (b) | |
4253 | (void) touch("/run/systemd/show-status"); | |
4254 | else | |
4255 | (void) unlink("/run/systemd/show-status"); | |
4256 | } | |
4257 | ||
44a41954 | 4258 | void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) { |
27d340c7 | 4259 | assert(m); |
44a41954 | 4260 | assert(reason); |
0d066dd1 | 4261 | assert(mode >= 0 && mode < _SHOW_STATUS_MAX); |
27d340c7 | 4262 | |
44a41954 | 4263 | if (MANAGER_IS_USER(m)) |
27d340c7 LP |
4264 | return; |
4265 | ||
ef15d3e1 ZJS |
4266 | if (mode == m->show_status) |
4267 | return; | |
4268 | ||
44a41954 FB |
4269 | if (m->show_status_overridden == _SHOW_STATUS_INVALID) { |
4270 | bool enabled; | |
4271 | ||
4272 | enabled = show_status_on(mode); | |
4273 | log_debug("%s (%s) showing of status (%s).", | |
4274 | enabled ? "Enabling" : "Disabling", | |
4275 | strna(show_status_to_string(mode)), | |
4276 | reason); | |
4277 | ||
3ceb3471 | 4278 | set_show_status_marker(enabled); |
44a41954 FB |
4279 | } |
4280 | ||
4281 | m->show_status = mode; | |
4282 | } | |
4283 | ||
43bba15a | 4284 | void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason) { |
44a41954 FB |
4285 | assert(m); |
4286 | assert(mode < _SHOW_STATUS_MAX); | |
4287 | ||
4288 | if (MANAGER_IS_USER(m)) | |
4289 | return; | |
4290 | ||
4291 | if (mode == m->show_status_overridden) | |
4292 | return; | |
4293 | ||
4294 | m->show_status_overridden = mode; | |
4295 | ||
4296 | if (mode == _SHOW_STATUS_INVALID) | |
4297 | mode = m->show_status; | |
4298 | ||
ef15d3e1 | 4299 | log_debug("%s (%s) showing of status (%s).", |
44a41954 | 4300 | m->show_status_overridden != _SHOW_STATUS_INVALID ? "Overriding" : "Restoring", |
ef15d3e1 ZJS |
4301 | strna(show_status_to_string(mode)), |
4302 | reason); | |
b309078a | 4303 | |
3ceb3471 | 4304 | set_show_status_marker(show_status_on(mode)); |
27d340c7 LP |
4305 | } |
4306 | ||
7d5ceb64 FB |
4307 | const char *manager_get_confirm_spawn(Manager *m) { |
4308 | static int last_errno = 0; | |
7d5ceb64 FB |
4309 | struct stat st; |
4310 | int r; | |
4311 | ||
ea758432 LP |
4312 | assert(m); |
4313 | ||
7d5ceb64 FB |
4314 | /* Here's the deal: we want to test the validity of the console but don't want |
4315 | * PID1 to go through the whole console process which might block. But we also | |
4316 | * want to warn the user only once if something is wrong with the console so we | |
4317 | * cannot do the sanity checks after spawning our children. So here we simply do | |
4318 | * really basic tests to hopefully trap common errors. | |
4319 | * | |
4320 | * If the console suddenly disappear at the time our children will really it | |
4321 | * then they will simply fail to acquire it and a positive answer will be | |
2aed63f4 | 4322 | * assumed. New children will fall back to /dev/console though. |
7d5ceb64 FB |
4323 | * |
4324 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
4325 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
2aed63f4 | 4326 | * reason the configured console is not ready, we fall back to the default |
7d5ceb64 FB |
4327 | * console. */ |
4328 | ||
ea758432 LP |
4329 | if (!m->confirm_spawn || path_equal(m->confirm_spawn, "/dev/console")) |
4330 | return m->confirm_spawn; | |
7d5ceb64 | 4331 | |
ea758432 LP |
4332 | if (stat(m->confirm_spawn, &st) < 0) { |
4333 | r = -errno; | |
7d5ceb64 | 4334 | goto fail; |
ea758432 | 4335 | } |
7d5ceb64 FB |
4336 | |
4337 | if (!S_ISCHR(st.st_mode)) { | |
ea758432 | 4338 | r = -ENOTTY; |
7d5ceb64 FB |
4339 | goto fail; |
4340 | } | |
4341 | ||
4342 | last_errno = 0; | |
ea758432 LP |
4343 | return m->confirm_spawn; |
4344 | ||
7d5ceb64 | 4345 | fail: |
ea758432 LP |
4346 | if (last_errno != r) |
4347 | last_errno = log_warning_errno(r, "Failed to open %s, using default console: %m", m->confirm_spawn); | |
4348 | ||
7d5ceb64 FB |
4349 | return "/dev/console"; |
4350 | } | |
4351 | ||
e2680723 LP |
4352 | void manager_set_first_boot(Manager *m, bool b) { |
4353 | assert(m); | |
4354 | ||
463d0d15 | 4355 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
4356 | return; |
4357 | ||
ae2a2c53 LP |
4358 | if (m->first_boot != (int) b) { |
4359 | if (b) | |
4360 | (void) touch("/run/systemd/first-boot"); | |
4361 | else | |
4362 | (void) unlink("/run/systemd/first-boot"); | |
4363 | } | |
e2680723 | 4364 | |
ae2a2c53 | 4365 | m->first_boot = b; |
e2680723 LP |
4366 | } |
4367 | ||
b0eb2944 FB |
4368 | void manager_disable_confirm_spawn(void) { |
4369 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
4370 | } | |
4371 | ||
4372 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
4373 | if (!m->confirm_spawn) | |
4374 | return true; | |
4375 | ||
4376 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
4377 | } | |
4378 | ||
0d6d3cf0 FB |
4379 | static bool manager_should_show_status(Manager *m, StatusType type) { |
4380 | assert(m); | |
4381 | ||
4382 | if (!MANAGER_IS_SYSTEM(m)) | |
4383 | return false; | |
4384 | ||
4385 | if (m->no_console_output) | |
4386 | return false; | |
4387 | ||
4388 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) | |
4389 | return false; | |
4390 | ||
4391 | /* If we cannot find out the status properly, just proceed. */ | |
4392 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) | |
4393 | return false; | |
4394 | ||
4395 | if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO) | |
4396 | return true; | |
4397 | ||
44a41954 | 4398 | return manager_get_show_status_on(m); |
0d6d3cf0 FB |
4399 | } |
4400 | ||
127d5fd1 | 4401 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
4402 | va_list ap; |
4403 | ||
cb6531be ZJS |
4404 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
4405 | ||
0d6d3cf0 | 4406 | if (m && !manager_should_show_status(m, type)) |
25cee550 MS |
4407 | return; |
4408 | ||
03b717a3 MS |
4409 | /* XXX We should totally drop the check for ephemeral here |
4410 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 4411 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
4412 | return; |
4413 | ||
25cee550 | 4414 | va_start(ap, format); |
a885727a | 4415 | status_vprintf(status, SHOW_STATUS_ELLIPSIZE|(type == STATUS_TYPE_EPHEMERAL ? SHOW_STATUS_EPHEMERAL : 0), format, ap); |
25cee550 MS |
4416 | va_end(ap); |
4417 | } | |
4418 | ||
ac19bdd0 | 4419 | Set* manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
a57f7e2c LP |
4420 | assert(m); |
4421 | assert(path); | |
4422 | ||
ac19bdd0 ZJS |
4423 | if (path_equal(path, "/")) |
4424 | path = ""; | |
a57f7e2c | 4425 | |
ac19bdd0 | 4426 | return hashmap_get(m->units_requiring_mounts_for, path); |
a57f7e2c | 4427 | } |
e66cf1a3 | 4428 | |
5269eb6b | 4429 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 4430 | unsigned size; |
5269eb6b | 4431 | int r; |
03455c28 LDM |
4432 | |
4433 | assert(m); | |
4434 | assert(u->manager == m); | |
4435 | ||
4436 | size = set_size(m->failed_units); | |
4437 | ||
9fff8981 | 4438 | if (failed) { |
de7fef4b | 4439 | r = set_ensure_put(&m->failed_units, NULL, u); |
5269eb6b LP |
4440 | if (r < 0) |
4441 | return log_oom(); | |
9fff8981 | 4442 | } else |
5269eb6b | 4443 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
4444 | |
4445 | if (set_size(m->failed_units) != size) | |
4446 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
4447 | |
4448 | return 0; | |
03455c28 LDM |
4449 | } |
4450 | ||
f755e3b7 LP |
4451 | ManagerState manager_state(Manager *m) { |
4452 | Unit *u; | |
4453 | ||
4454 | assert(m); | |
4455 | ||
f9d29f6d JB |
4456 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
4457 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
4458 | if (u && unit_active_or_pending(u)) | |
4459 | return MANAGER_STOPPING; | |
4460 | ||
f755e3b7 | 4461 | /* Did we ever finish booting? If not then we are still starting up */ |
49d5666c | 4462 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
4463 | |
4464 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
4465 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
4466 | return MANAGER_INITIALIZING; | |
4467 | ||
f755e3b7 | 4468 | return MANAGER_STARTING; |
d81afec1 | 4469 | } |
f755e3b7 | 4470 | |
45a7b16b LP |
4471 | if (MANAGER_IS_SYSTEM(m)) { |
4472 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
4473 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
4474 | if (u && unit_active_or_pending(u)) | |
4475 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 4476 | |
45a7b16b LP |
4477 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
4478 | if (u && unit_active_or_pending(u)) | |
4479 | return MANAGER_MAINTENANCE; | |
4480 | } | |
f755e3b7 LP |
4481 | |
4482 | /* Are there any failed units? If so, we are in degraded mode */ | |
4483 | if (set_size(m->failed_units) > 0) | |
4484 | return MANAGER_DEGRADED; | |
4485 | ||
4486 | return MANAGER_RUNNING; | |
4487 | } | |
4488 | ||
00d9ef85 | 4489 | static void manager_unref_uid_internal( |
010becd9 | 4490 | Hashmap *uid_refs, |
00d9ef85 LP |
4491 | uid_t uid, |
4492 | bool destroy_now, | |
4493 | int (*_clean_ipc)(uid_t uid)) { | |
4494 | ||
4495 | uint32_t c, n; | |
4496 | ||
00d9ef85 LP |
4497 | assert(uid_is_valid(uid)); |
4498 | assert(_clean_ipc); | |
4499 | ||
8f41e6b6 ZJS |
4500 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the |
4501 | * assumption that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
00d9ef85 | 4502 | * |
8f41e6b6 ZJS |
4503 | * We store a hashmap where the key is the UID/GID and the value is a 32bit reference counter, whose |
4504 | * highest bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last | |
4505 | * reference to the UID/GID is dropped. The flag is set to on, once at least one reference from a | |
4506 | * unit where RemoveIPC= is set is added on a UID/GID. It is reset when the UID's/GID's reference | |
4507 | * counter drops to 0 again. */ | |
00d9ef85 LP |
4508 | |
4509 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4510 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4511 | ||
4512 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4513 | return; | |
4514 | ||
010becd9 | 4515 | c = PTR_TO_UINT32(hashmap_get(uid_refs, UID_TO_PTR(uid))); |
00d9ef85 LP |
4516 | |
4517 | n = c & ~DESTROY_IPC_FLAG; | |
4518 | assert(n > 0); | |
4519 | n--; | |
4520 | ||
4521 | if (destroy_now && n == 0) { | |
010becd9 | 4522 | hashmap_remove(uid_refs, UID_TO_PTR(uid)); |
00d9ef85 LP |
4523 | |
4524 | if (c & DESTROY_IPC_FLAG) { | |
4525 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
4526 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4527 | uid); | |
4528 | (void) _clean_ipc(uid); | |
4529 | } | |
4530 | } else { | |
4531 | c = n | (c & DESTROY_IPC_FLAG); | |
010becd9 | 4532 | assert_se(hashmap_update(uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); |
00d9ef85 LP |
4533 | } |
4534 | } | |
4535 | ||
4536 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
010becd9 | 4537 | manager_unref_uid_internal(m->uid_refs, uid, destroy_now, clean_ipc_by_uid); |
00d9ef85 LP |
4538 | } |
4539 | ||
4540 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
010becd9 | 4541 | manager_unref_uid_internal(m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); |
00d9ef85 LP |
4542 | } |
4543 | ||
4544 | static int manager_ref_uid_internal( | |
00d9ef85 LP |
4545 | Hashmap **uid_refs, |
4546 | uid_t uid, | |
4547 | bool clean_ipc) { | |
4548 | ||
4549 | uint32_t c, n; | |
4550 | int r; | |
4551 | ||
00d9ef85 LP |
4552 | assert(uid_refs); |
4553 | assert(uid_is_valid(uid)); | |
4554 | ||
8f41e6b6 ZJS |
4555 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the |
4556 | * assumption that uid_t and gid_t are actually defined the same way, with the same validity | |
4557 | * rules. */ | |
00d9ef85 LP |
4558 | |
4559 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4560 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4561 | ||
4562 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4563 | return 0; | |
4564 | ||
4565 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
4566 | if (r < 0) | |
4567 | return r; | |
4568 | ||
4569 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4570 | ||
4571 | n = c & ~DESTROY_IPC_FLAG; | |
4572 | n++; | |
4573 | ||
4574 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
4575 | return -EOVERFLOW; | |
4576 | ||
4577 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
4578 | ||
4579 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
4580 | } | |
4581 | ||
4582 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
010becd9 | 4583 | return manager_ref_uid_internal(&m->uid_refs, uid, clean_ipc); |
00d9ef85 LP |
4584 | } |
4585 | ||
4586 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
010becd9 | 4587 | return manager_ref_uid_internal(&m->gid_refs, (uid_t) gid, clean_ipc); |
00d9ef85 LP |
4588 | } |
4589 | ||
4590 | static void manager_vacuum_uid_refs_internal( | |
010becd9 | 4591 | Hashmap *uid_refs, |
00d9ef85 LP |
4592 | int (*_clean_ipc)(uid_t uid)) { |
4593 | ||
00d9ef85 LP |
4594 | void *p, *k; |
4595 | ||
00d9ef85 LP |
4596 | assert(_clean_ipc); |
4597 | ||
010becd9 | 4598 | HASHMAP_FOREACH_KEY(p, k, uid_refs) { |
00d9ef85 LP |
4599 | uint32_t c, n; |
4600 | uid_t uid; | |
4601 | ||
4602 | uid = PTR_TO_UID(k); | |
4603 | c = PTR_TO_UINT32(p); | |
4604 | ||
4605 | n = c & ~DESTROY_IPC_FLAG; | |
4606 | if (n > 0) | |
4607 | continue; | |
4608 | ||
4609 | if (c & DESTROY_IPC_FLAG) { | |
4610 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
4611 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4612 | uid); | |
4613 | (void) _clean_ipc(uid); | |
4614 | } | |
4615 | ||
010becd9 | 4616 | assert_se(hashmap_remove(uid_refs, k) == p); |
00d9ef85 LP |
4617 | } |
4618 | } | |
4619 | ||
06a4eb07 | 4620 | static void manager_vacuum_uid_refs(Manager *m) { |
010becd9 | 4621 | manager_vacuum_uid_refs_internal(m->uid_refs, clean_ipc_by_uid); |
00d9ef85 LP |
4622 | } |
4623 | ||
06a4eb07 | 4624 | static void manager_vacuum_gid_refs(Manager *m) { |
010becd9 | 4625 | manager_vacuum_uid_refs_internal(m->gid_refs, clean_ipc_by_gid); |
00d9ef85 LP |
4626 | } |
4627 | ||
06a4eb07 FB |
4628 | static void manager_vacuum(Manager *m) { |
4629 | assert(m); | |
4630 | ||
4631 | /* Release any dynamic users no longer referenced */ | |
4632 | dynamic_user_vacuum(m, true); | |
4633 | ||
4634 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ | |
4635 | manager_vacuum_uid_refs(m); | |
4636 | manager_vacuum_gid_refs(m); | |
4637 | ||
4638 | /* Release any runtimes no longer referenced */ | |
e76506b7 | 4639 | exec_shared_runtime_vacuum(m); |
06a4eb07 FB |
4640 | } |
4641 | ||
00d9ef85 LP |
4642 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
4643 | struct buffer { | |
4644 | uid_t uid; | |
4645 | gid_t gid; | |
4646 | char unit_name[UNIT_NAME_MAX+1]; | |
4647 | } _packed_ buffer; | |
4648 | ||
4649 | Manager *m = userdata; | |
4650 | ssize_t l; | |
4651 | size_t n; | |
4652 | Unit *u; | |
4653 | ||
4654 | assert_se(source); | |
4655 | assert_se(m); | |
4656 | ||
8f41e6b6 ZJS |
4657 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the |
4658 | * resulting UID/GID in a datagram. We parse the datagram here and pass it off to the unit, so that | |
4659 | * it can add a reference to the UID/GID so that it can destroy the UID/GID's IPC objects when the | |
4660 | * reference counter drops to 0. */ | |
00d9ef85 LP |
4661 | |
4662 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
4663 | if (l < 0) { | |
8add30a0 | 4664 | if (ERRNO_IS_TRANSIENT(errno)) |
00d9ef85 LP |
4665 | return 0; |
4666 | ||
4667 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
4668 | } | |
4669 | ||
4670 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
4671 | log_warning("Received too short user lookup message, ignoring."); | |
4672 | return 0; | |
4673 | } | |
4674 | ||
4675 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
4676 | log_warning("Received too long user lookup message, ignoring."); | |
4677 | return 0; | |
4678 | } | |
4679 | ||
4680 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
4681 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
4682 | return 0; | |
4683 | } | |
4684 | ||
4685 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
4686 | if (memchr(buffer.unit_name, 0, n)) { | |
4687 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
4688 | return 0; | |
4689 | } | |
4690 | ||
4691 | buffer.unit_name[n] = 0; | |
4692 | u = manager_get_unit(m, buffer.unit_name); | |
4693 | if (!u) { | |
4694 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
4695 | return 0; | |
4696 | } | |
4697 | ||
4698 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
4699 | ||
4700 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
4701 | return 0; | |
4702 | } | |
4703 | ||
63e8df04 | 4704 | static int short_uid_range(const char *path) { |
8dcc66ce | 4705 | _cleanup_(uid_range_freep) UidRange *p = NULL; |
63e8df04 LP |
4706 | int r; |
4707 | ||
4708 | assert(path); | |
4709 | ||
4710 | /* Taint systemd if we the UID range assigned to this environment doesn't at least cover 0…65534, | |
4711 | * i.e. from root to nobody. */ | |
4712 | ||
8dcc66ce YW |
4713 | r = uid_range_load_userns(&p, path); |
4714 | if (r < 0) { | |
4715 | if (ERRNO_IS_NOT_SUPPORTED(r)) | |
4716 | return false; | |
63e8df04 | 4717 | return log_debug_errno(r, "Failed to load %s: %m", path); |
8dcc66ce | 4718 | } |
63e8df04 | 4719 | |
8dcc66ce | 4720 | return !uid_range_covers(p, 0, 65535); |
63e8df04 LP |
4721 | } |
4722 | ||
83fe5d8a ZJS |
4723 | char* manager_taint_string(const Manager *m) { |
4724 | /* Returns a "taint string", e.g. "local-hwclock:var-run-bad". Only things that are detected at | |
4725 | * runtime should be tagged here. For stuff that is known during compilation, emit a warning in the | |
63e8df04 | 4726 | * configuration phase. */ |
198ce932 | 4727 | |
af6b0ecc LP |
4728 | assert(m); |
4729 | ||
4bd03515 | 4730 | const char* stage[13] = {}; |
83fe5d8a | 4731 | size_t n = 0; |
af6b0ecc LP |
4732 | |
4733 | if (m->taint_usr) | |
83fe5d8a | 4734 | stage[n++] = "split-usr"; |
af6b0ecc | 4735 | |
31cd2dd9 LB |
4736 | _cleanup_free_ char *usrbin = NULL; |
4737 | if (readlink_malloc("/bin", &usrbin) < 0 || !PATH_IN_SET(usrbin, "usr/bin", "/usr/bin")) | |
4738 | stage[n++] = "unmerged-usr"; | |
4739 | ||
af6b0ecc | 4740 | if (access("/proc/cgroups", F_OK) < 0) |
83fe5d8a | 4741 | stage[n++] = "cgroups-missing"; |
af6b0ecc | 4742 | |
82f30632 | 4743 | if (cg_all_unified() == 0) |
83fe5d8a | 4744 | stage[n++] = "cgroupsv1"; |
82f30632 | 4745 | |
af6b0ecc | 4746 | if (clock_is_localtime(NULL) > 0) |
83fe5d8a | 4747 | stage[n++] = "local-hwclock"; |
af6b0ecc | 4748 | |
6bfe9b3b | 4749 | if (os_release_support_ended(NULL, /* quiet= */ true, NULL) > 0) |
4bd03515 ZJS |
4750 | stage[n++] = "support-ended"; |
4751 | ||
83fe5d8a ZJS |
4752 | _cleanup_free_ char *destination = NULL; |
4753 | if (readlink_malloc("/var/run", &destination) < 0 || | |
4754 | !PATH_IN_SET(destination, "../run", "/run")) | |
4755 | stage[n++] = "var-run-bad"; | |
af6b0ecc | 4756 | |
83fe5d8a ZJS |
4757 | _cleanup_free_ char *overflowuid = NULL, *overflowgid = NULL; |
4758 | if (read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid) >= 0 && | |
4759 | !streq(overflowuid, "65534")) | |
4760 | stage[n++] = "overflowuid-not-65534"; | |
4761 | if (read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid) >= 0 && | |
4762 | !streq(overflowgid, "65534")) | |
4763 | stage[n++] = "overflowgid-not-65534"; | |
90d7464d | 4764 | |
83fe5d8a | 4765 | struct utsname uts; |
40efaaed LP |
4766 | assert_se(uname(&uts) >= 0); |
4767 | if (strverscmp_improved(uts.release, KERNEL_BASELINE_VERSION) < 0) | |
83fe5d8a | 4768 | stage[n++] = "old-kernel"; |
40efaaed | 4769 | |
63e8df04 | 4770 | if (short_uid_range("/proc/self/uid_map") > 0) |
83fe5d8a | 4771 | stage[n++] = "short-uid-range"; |
63e8df04 | 4772 | if (short_uid_range("/proc/self/gid_map") > 0) |
83fe5d8a | 4773 | stage[n++] = "short-gid-range"; |
63e8df04 | 4774 | |
83fe5d8a | 4775 | assert(n < ELEMENTSOF(stage) - 1); /* One extra for NULL terminator */ |
af6b0ecc | 4776 | |
83fe5d8a | 4777 | return strv_join((char**) stage, ":"); |
af6b0ecc LP |
4778 | } |
4779 | ||
adefcf28 LP |
4780 | void manager_ref_console(Manager *m) { |
4781 | assert(m); | |
4782 | ||
4783 | m->n_on_console++; | |
4784 | } | |
4785 | ||
4786 | void manager_unref_console(Manager *m) { | |
4787 | ||
4788 | assert(m->n_on_console > 0); | |
4789 | m->n_on_console--; | |
4790 | ||
4791 | if (m->n_on_console == 0) | |
4792 | m->no_console_output = false; /* unset no_console_output flag, since the console is definitely free now */ | |
4793 | } | |
4794 | ||
a6ecbf83 FB |
4795 | void manager_override_log_level(Manager *m, int level) { |
4796 | _cleanup_free_ char *s = NULL; | |
4797 | assert(m); | |
4798 | ||
4799 | if (!m->log_level_overridden) { | |
4800 | m->original_log_level = log_get_max_level(); | |
4801 | m->log_level_overridden = true; | |
4802 | } | |
4803 | ||
4804 | (void) log_level_to_string_alloc(level, &s); | |
4805 | log_info("Setting log level to %s.", strna(s)); | |
4806 | ||
4807 | log_set_max_level(level); | |
4808 | } | |
4809 | ||
4810 | void manager_restore_original_log_level(Manager *m) { | |
4811 | _cleanup_free_ char *s = NULL; | |
4812 | assert(m); | |
4813 | ||
4814 | if (!m->log_level_overridden) | |
4815 | return; | |
4816 | ||
4817 | (void) log_level_to_string_alloc(m->original_log_level, &s); | |
4818 | log_info("Restoring log level to original (%s).", strna(s)); | |
4819 | ||
4820 | log_set_max_level(m->original_log_level); | |
4821 | m->log_level_overridden = false; | |
4822 | } | |
4823 | ||
bda7d78b FB |
4824 | void manager_override_log_target(Manager *m, LogTarget target) { |
4825 | assert(m); | |
4826 | ||
4827 | if (!m->log_target_overridden) { | |
4828 | m->original_log_target = log_get_target(); | |
4829 | m->log_target_overridden = true; | |
4830 | } | |
4831 | ||
4832 | log_info("Setting log target to %s.", log_target_to_string(target)); | |
4833 | log_set_target(target); | |
4834 | } | |
4835 | ||
4836 | void manager_restore_original_log_target(Manager *m) { | |
4837 | assert(m); | |
4838 | ||
4839 | if (!m->log_target_overridden) | |
4840 | return; | |
4841 | ||
4842 | log_info("Restoring log target to original %s.", log_target_to_string(m->original_log_target)); | |
4843 | ||
4844 | log_set_target(m->original_log_target); | |
4845 | m->log_target_overridden = false; | |
4846 | } | |
4847 | ||
d4ee7bd8 YW |
4848 | ManagerTimestamp manager_timestamp_initrd_mangle(ManagerTimestamp s) { |
4849 | if (in_initrd() && | |
4850 | s >= MANAGER_TIMESTAMP_SECURITY_START && | |
4851 | s <= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH) | |
4852 | return s - MANAGER_TIMESTAMP_SECURITY_START + MANAGER_TIMESTAMP_INITRD_SECURITY_START; | |
4853 | return s; | |
4854 | } | |
4855 | ||
f755e3b7 | 4856 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 4857 | [MANAGER_INITIALIZING] = "initializing", |
48d83e33 ZJS |
4858 | [MANAGER_STARTING] = "starting", |
4859 | [MANAGER_RUNNING] = "running", | |
4860 | [MANAGER_DEGRADED] = "degraded", | |
4861 | [MANAGER_MAINTENANCE] = "maintenance", | |
4862 | [MANAGER_STOPPING] = "stopping", | |
f755e3b7 LP |
4863 | }; |
4864 | ||
4865 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
4866 | |
4867 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
48d83e33 ZJS |
4868 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", |
4869 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
4870 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
4871 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
4872 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
4873 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
4874 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
4875 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
4876 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
4877 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
4878 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
4879 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
49fbe940 | 4880 | [MANAGER_TIMESTAMP_UNITS_LOAD] = "units-load", |
48d83e33 ZJS |
4881 | [MANAGER_TIMESTAMP_INITRD_SECURITY_START] = "initrd-security-start", |
4882 | [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH] = "initrd-security-finish", | |
4883 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_START] = "initrd-generators-start", | |
d4ee7bd8 | 4884 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH] = "initrd-generators-finish", |
48d83e33 | 4885 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START] = "initrd-units-load-start", |
d4ee7bd8 | 4886 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH] = "initrd-units-load-finish", |
9f9f0342 LP |
4887 | }; |
4888 | ||
4889 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); | |
afcfaa69 LP |
4890 | |
4891 | static const char* const oom_policy_table[_OOM_POLICY_MAX] = { | |
4892 | [OOM_CONTINUE] = "continue", | |
48d83e33 ZJS |
4893 | [OOM_STOP] = "stop", |
4894 | [OOM_KILL] = "kill", | |
afcfaa69 LP |
4895 | }; |
4896 | ||
4897 | DEFINE_STRING_TABLE_LOOKUP(oom_policy, OOMPolicy); |