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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
60918275 | 3 | #include <errno.h> |
400f1a33 LP |
4 | #include <fcntl.h> |
5 | #include <linux/kd.h> | |
e46b13c8 | 6 | #include <sys/epoll.h> |
400f1a33 | 7 | #include <sys/inotify.h> |
e1414003 | 8 | #include <sys/ioctl.h> |
400f1a33 | 9 | #include <sys/reboot.h> |
8742514c | 10 | #include <sys/timerfd.h> |
400f1a33 LP |
11 | #include <sys/wait.h> |
12 | #include <unistd.h> | |
830f6caa | 13 | |
349cc4a5 | 14 | #if HAVE_AUDIT |
4927fcae | 15 | #include <libaudit.h> |
830f6caa | 16 | #endif |
60918275 | 17 | |
718db961 | 18 | #include "sd-daemon.h" |
718db961 | 19 | #include "sd-messages.h" |
3536f49e | 20 | #include "sd-path.h" |
81527be1 | 21 | |
57b7a260 | 22 | #include "all-units.h" |
d68c645b | 23 | #include "alloc-util.h" |
400f1a33 LP |
24 | #include "audit-fd.h" |
25 | #include "boot-timestamps.h" | |
26 | #include "bus-common-errors.h" | |
27 | #include "bus-error.h" | |
28 | #include "bus-kernel.h" | |
29 | #include "bus-util.h" | |
00d9ef85 | 30 | #include "clean-ipc.h" |
af6b0ecc | 31 | #include "clock-util.h" |
19d22d43 | 32 | #include "core-varlink.h" |
400f1a33 LP |
33 | #include "dbus-job.h" |
34 | #include "dbus-manager.h" | |
35 | #include "dbus-unit.h" | |
36 | #include "dbus.h" | |
0e7f5ad9 | 37 | #include "def.h" |
d063a527 | 38 | #include "dirent-util.h" |
400f1a33 | 39 | #include "env-util.h" |
4f5dd394 | 40 | #include "escape.h" |
89711996 | 41 | #include "exec-util.h" |
d3070fbd | 42 | #include "execute.h" |
400f1a33 | 43 | #include "exit-status.h" |
3ffd4af2 | 44 | #include "fd-util.h" |
0d39fa9c | 45 | #include "fileio.h" |
f4f15635 | 46 | #include "fs-util.h" |
385093b7 | 47 | #include "generator-setup.h" |
60918275 | 48 | #include "hashmap.h" |
5cfa33e0 | 49 | #include "install.h" |
19d22d43 | 50 | #include "io-util.h" |
d3070fbd | 51 | #include "label.h" |
400f1a33 | 52 | #include "locale-setup.h" |
d904afc7 | 53 | #include "load-fragment.h" |
16354eff | 54 | #include "log.h" |
400f1a33 | 55 | #include "macro.h" |
3ffd4af2 | 56 | #include "manager.h" |
0a970718 | 57 | #include "memory-util.h" |
49e942b2 | 58 | #include "mkdir.h" |
6bedfcbb | 59 | #include "parse-util.h" |
400f1a33 LP |
60 | #include "path-lookup.h" |
61 | #include "path-util.h" | |
62 | #include "process-util.h" | |
ea430986 | 63 | #include "ratelimit.h" |
31ce987c | 64 | #include "rlimit-util.h" |
c6878637 | 65 | #include "rm-rf.h" |
45ae2f72 | 66 | #include "selinux-util.h" |
d68c645b | 67 | #include "serialize.h" |
400f1a33 | 68 | #include "signal-util.h" |
57b7a260 | 69 | #include "socket-util.h" |
514f4ef5 | 70 | #include "special.h" |
8fcde012 | 71 | #include "stat-util.h" |
8b43440b | 72 | #include "string-table.h" |
07630cea | 73 | #include "string-util.h" |
400f1a33 | 74 | #include "strv.h" |
dd1db3c2 | 75 | #include "strxcpyx.h" |
6123dfaa | 76 | #include "sysctl-util.h" |
a6ecbf83 | 77 | #include "syslog-util.h" |
400f1a33 LP |
78 | #include "terminal-util.h" |
79 | #include "time-util.h" | |
80 | #include "transaction.h" | |
affb60b1 | 81 | #include "umask-util.h" |
400f1a33 | 82 | #include "unit-name.h" |
00d9ef85 | 83 | #include "user-util.h" |
5dc4c17f | 84 | #include "virt.h" |
e96d6be7 | 85 | #include "watchdog.h" |
60918275 | 86 | |
a47806fa | 87 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 88 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 89 | |
03b717a3 | 90 | /* Initial delay and the interval for printing status messages about running jobs */ |
1b4154a8 ZJS |
91 | #define JOBS_IN_PROGRESS_WAIT_USEC (2*USEC_PER_SEC) |
92 | #define JOBS_IN_PROGRESS_QUIET_WAIT_USEC (25*USEC_PER_SEC) | |
fd08a840 | 93 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) |
03b717a3 MS |
94 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
95 | ||
5238e957 | 96 | /* 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 |
97 | * the queue gets more empty. */ |
98 | #define MANAGER_BUS_BUSY_THRESHOLD 1024LU | |
99 | ||
100 | /* How many units and jobs to process of the bus queue before returning to the event loop. */ | |
101 | #define MANAGER_BUS_MESSAGE_BUDGET 100U | |
102 | ||
718db961 | 103 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 104 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
105 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
106 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
107 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 108 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 109 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 110 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
575b300b | 111 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata); |
bbf5fd8e | 112 | static int manager_dispatch_timezone_change(sd_event_source *source, const struct inotify_event *event, void *userdata); |
64691d20 | 113 | static int manager_run_environment_generators(Manager *m); |
e801700e | 114 | static int manager_run_generators(Manager *m); |
06a4eb07 | 115 | static void manager_vacuum(Manager *m); |
718db961 | 116 | |
1b4154a8 ZJS |
117 | static usec_t manager_watch_jobs_next_time(Manager *m) { |
118 | return usec_add(now(CLOCK_MONOTONIC), | |
119 | show_status_on(m->show_status) ? JOBS_IN_PROGRESS_WAIT_USEC : | |
120 | JOBS_IN_PROGRESS_QUIET_WAIT_USEC); | |
121 | } | |
122 | ||
2ae56591 | 123 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 124 | usec_t next; |
cfa9677b | 125 | int r; |
e5723c89 | 126 | |
718db961 | 127 | assert(m); |
03b717a3 | 128 | |
42bf1ae1 FB |
129 | /* We do not want to show the cylon animation if the user |
130 | * needs to confirm service executions otherwise confirmation | |
131 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 132 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
133 | return; |
134 | ||
718db961 | 135 | if (m->jobs_in_progress_event_source) |
2ae56591 | 136 | return; |
03b717a3 | 137 | |
1b4154a8 | 138 | next = manager_watch_jobs_next_time(m); |
cfa9677b | 139 | r = sd_event_add_time( |
6a0f1f6d LP |
140 | m->event, |
141 | &m->jobs_in_progress_event_source, | |
142 | CLOCK_MONOTONIC, | |
143 | next, 0, | |
144 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
145 | if (r < 0) |
146 | return; | |
7dfbe2e3 TG |
147 | |
148 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
149 | } |
150 | ||
fbd0b64f | 151 | #define CYLON_BUFFER_EXTRA (2*STRLEN(ANSI_RED) + STRLEN(ANSI_HIGHLIGHT_RED) + 2*STRLEN(ANSI_NORMAL)) |
03b717a3 | 152 | |
03b717a3 MS |
153 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
154 | char *p = buffer; | |
155 | ||
156 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
157 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
158 | ||
159 | if (pos > 1) { | |
6282c859 MS |
160 | if (pos > 2) |
161 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
162 | if (log_get_show_color()) |
163 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
164 | *p++ = '*'; |
165 | } | |
166 | ||
167 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
168 | if (log_get_show_color()) |
169 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
170 | *p++ = '*'; |
171 | } | |
172 | ||
64c3610b FB |
173 | if (log_get_show_color()) |
174 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
175 | |
176 | if (pos < width) { | |
64c3610b FB |
177 | if (log_get_show_color()) |
178 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 179 | *p++ = '*'; |
6282c859 MS |
180 | if (pos < width-1) |
181 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
182 | if (log_get_show_color()) |
183 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 184 | } |
03b717a3 MS |
185 | } |
186 | ||
1addc46c | 187 | static void manager_flip_auto_status(Manager *m, bool enable, const char *reason) { |
f755e3b7 LP |
188 | assert(m); |
189 | ||
cb8ccb22 ZJS |
190 | if (enable) { |
191 | if (m->show_status == SHOW_STATUS_AUTO) | |
7365a296 | 192 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY, reason); |
cb8ccb22 ZJS |
193 | } else { |
194 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
7365a296 | 195 | manager_set_show_status(m, SHOW_STATUS_AUTO, reason); |
cb8ccb22 ZJS |
196 | } |
197 | } | |
198 | ||
03b717a3 | 199 | static void manager_print_jobs_in_progress(Manager *m) { |
718db961 | 200 | _cleanup_free_ char *job_of_n = NULL; |
03b717a3 MS |
201 | Iterator i; |
202 | Job *j; | |
03b717a3 MS |
203 | unsigned counter = 0, print_nr; |
204 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
205 | unsigned cylon_pos; | |
8bb310c3 ZJS |
206 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
207 | uint64_t x; | |
03b717a3 | 208 | |
718db961 | 209 | assert(m); |
9c3349e2 | 210 | assert(m->n_running_jobs > 0); |
718db961 | 211 | |
7365a296 | 212 | manager_flip_auto_status(m, true, "delay"); |
d450b6f2 | 213 | |
03b717a3 MS |
214 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
215 | ||
216 | HASHMAP_FOREACH(j, m->jobs, i) | |
217 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
218 | break; | |
219 | ||
e970a72e MS |
220 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
221 | * so the above loop must have succeeded in finding j. */ | |
222 | assert(counter == print_nr + 1); | |
51d122af | 223 | assert(j); |
5a82a91a | 224 | |
03b717a3 MS |
225 | cylon_pos = m->jobs_in_progress_iteration % 14; |
226 | if (cylon_pos >= 8) | |
227 | cylon_pos = 14 - cylon_pos; | |
228 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
229 | ||
8bb310c3 ZJS |
230 | m->jobs_in_progress_iteration++; |
231 | ||
d6483ba7 ZJS |
232 | if (m->n_running_jobs > 1) { |
233 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
234 | job_of_n = NULL; | |
235 | } | |
03b717a3 | 236 | |
8bb310c3 ZJS |
237 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
238 | if (job_get_timeout(j, &x) > 0) | |
239 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
240 | ||
127d5fd1 | 241 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
242 | "%sA %s job is running for %s (%s / %s)", |
243 | strempty(job_of_n), | |
244 | job_type_to_string(j->type), | |
2a8f53c6 | 245 | unit_status_string(j->unit), |
8bb310c3 | 246 | time, limit); |
03b717a3 MS |
247 | } |
248 | ||
e46b13c8 ZJS |
249 | static int have_ask_password(void) { |
250 | _cleanup_closedir_ DIR *dir; | |
8fb3f009 | 251 | struct dirent *de; |
e46b13c8 ZJS |
252 | |
253 | dir = opendir("/run/systemd/ask-password"); | |
254 | if (!dir) { | |
255 | if (errno == ENOENT) | |
256 | return false; | |
257 | else | |
258 | return -errno; | |
259 | } | |
260 | ||
8fb3f009 | 261 | FOREACH_DIRENT_ALL(de, dir, return -errno) { |
e46b13c8 ZJS |
262 | if (startswith(de->d_name, "ask.")) |
263 | return true; | |
264 | } | |
8fb3f009 | 265 | return false; |
e46b13c8 ZJS |
266 | } |
267 | ||
268 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
269 | int fd, uint32_t revents, void *userdata) { | |
270 | Manager *m = userdata; | |
271 | ||
272 | assert(m); | |
273 | ||
665dfe93 | 274 | (void) flush_fd(fd); |
e46b13c8 ZJS |
275 | |
276 | m->have_ask_password = have_ask_password(); | |
277 | if (m->have_ask_password < 0) | |
278 | /* Log error but continue. Negative have_ask_password | |
279 | * is treated as unknown status. */ | |
c33b3297 | 280 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
281 | |
282 | return 0; | |
283 | } | |
284 | ||
285 | static void manager_close_ask_password(Manager *m) { | |
286 | assert(m); | |
287 | ||
e46b13c8 | 288 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 289 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
290 | m->have_ask_password = -EINVAL; |
291 | } | |
292 | ||
293 | static int manager_check_ask_password(Manager *m) { | |
294 | int r; | |
295 | ||
296 | assert(m); | |
297 | ||
298 | if (!m->ask_password_event_source) { | |
299 | assert(m->ask_password_inotify_fd < 0); | |
300 | ||
17e4b070 | 301 | (void) mkdir_p_label("/run/systemd/ask-password", 0755); |
e46b13c8 ZJS |
302 | |
303 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 | 304 | if (m->ask_password_inotify_fd < 0) |
330b8fb3 | 305 | return log_error_errno(errno, "Failed to create inotify object: %m"); |
e46b13c8 | 306 | |
27c3112d FB |
307 | r = inotify_add_watch_and_warn(m->ask_password_inotify_fd, |
308 | "/run/systemd/ask-password", | |
309 | IN_CREATE|IN_DELETE|IN_MOVE); | |
310 | if (r < 0) { | |
e46b13c8 | 311 | manager_close_ask_password(m); |
27c3112d | 312 | return r; |
e46b13c8 ZJS |
313 | } |
314 | ||
315 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
316 | m->ask_password_inotify_fd, EPOLLIN, | |
317 | manager_dispatch_ask_password_fd, m); | |
318 | if (r < 0) { | |
df3d3bdf | 319 | log_error_errno(r, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 | 320 | manager_close_ask_password(m); |
df3d3bdf | 321 | return r; |
e46b13c8 ZJS |
322 | } |
323 | ||
7dfbe2e3 TG |
324 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
325 | ||
e46b13c8 ZJS |
326 | /* Queries might have been added meanwhile... */ |
327 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
328 | m->ask_password_inotify_fd, EPOLLIN, m); | |
329 | } | |
330 | ||
331 | return m->have_ask_password; | |
332 | } | |
333 | ||
31a7eb86 | 334 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
335 | int r; |
336 | ||
718db961 LP |
337 | assert(m); |
338 | ||
339 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
340 | return 0; |
341 | ||
342 | if (m->idle_pipe[2] < 0) | |
343 | return 0; | |
344 | ||
151b9b96 | 345 | 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 |
346 | if (r < 0) |
347 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 348 | |
7dfbe2e3 TG |
349 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
350 | ||
31a7eb86 | 351 | return 0; |
31a7eb86 ZJS |
352 | } |
353 | ||
718db961 LP |
354 | static void manager_close_idle_pipe(Manager *m) { |
355 | assert(m); | |
31a7eb86 | 356 | |
cd72bd8a LP |
357 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
358 | ||
3d94f76c LP |
359 | safe_close_pair(m->idle_pipe); |
360 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
361 | } |
362 | ||
8742514c | 363 | static int manager_setup_time_change(Manager *m) { |
718db961 | 364 | int r; |
b92bea5d | 365 | |
718db961 | 366 | assert(m); |
8742514c | 367 | |
638cece4 | 368 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
369 | return 0; |
370 | ||
7feedd18 LP |
371 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); |
372 | m->time_change_fd = safe_close(m->time_change_fd); | |
373 | ||
4f811d27 | 374 | m->time_change_fd = time_change_fd(); |
4a62c710 | 375 | if (m->time_change_fd < 0) |
4f811d27 | 376 | return log_error_errno(m->time_change_fd, "Failed to create timer change timer fd: %m"); |
8742514c | 377 | |
151b9b96 | 378 | r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m); |
23bbb0de MS |
379 | if (r < 0) |
380 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 381 | |
a5cc7e5a LP |
382 | /* Schedule this slightly earlier than the .timer event sources */ |
383 | r = sd_event_source_set_priority(m->time_change_event_source, SD_EVENT_PRIORITY_NORMAL-1); | |
384 | if (r < 0) | |
385 | return log_error_errno(r, "Failed to set priority of time change event sources: %m"); | |
386 | ||
7dfbe2e3 TG |
387 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
388 | ||
8742514c LP |
389 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
bbf5fd8e LP |
394 | static int manager_read_timezone_stat(Manager *m) { |
395 | struct stat st; | |
396 | bool changed; | |
397 | ||
398 | assert(m); | |
399 | ||
400 | /* Read the current stat() data of /etc/localtime so that we detect changes */ | |
401 | if (lstat("/etc/localtime", &st) < 0) { | |
402 | log_debug_errno(errno, "Failed to stat /etc/localtime, ignoring: %m"); | |
403 | changed = m->etc_localtime_accessible; | |
404 | m->etc_localtime_accessible = false; | |
405 | } else { | |
406 | usec_t k; | |
407 | ||
408 | k = timespec_load(&st.st_mtim); | |
409 | changed = !m->etc_localtime_accessible || k != m->etc_localtime_mtime; | |
410 | ||
411 | m->etc_localtime_mtime = k; | |
412 | m->etc_localtime_accessible = true; | |
413 | } | |
414 | ||
415 | return changed; | |
416 | } | |
417 | ||
418 | static int manager_setup_timezone_change(Manager *m) { | |
a5cc7e5a | 419 | _cleanup_(sd_event_source_unrefp) sd_event_source *new_event = NULL; |
bbf5fd8e LP |
420 | int r; |
421 | ||
422 | assert(m); | |
423 | ||
638cece4 | 424 | if (MANAGER_IS_TEST_RUN(m)) |
bbf5fd8e LP |
425 | return 0; |
426 | ||
427 | /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even | |
428 | * though another link might be kept), renames, and file close operations after writing. Note we don't bother | |
429 | * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count | |
430 | * went to zero and all fds to it are closed. | |
431 | * | |
432 | * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases | |
433 | * correctly. | |
434 | * | |
435 | * Note that we create the new event source first here, before releasing the old one. This should optimize | |
436 | * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */ | |
437 | ||
438 | r = sd_event_add_inotify(m->event, &new_event, "/etc/localtime", | |
439 | IN_ATTRIB|IN_MOVE_SELF|IN_CLOSE_WRITE|IN_DONT_FOLLOW, manager_dispatch_timezone_change, m); | |
0cb21d8c LP |
440 | if (r == -ENOENT) { |
441 | /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by | |
442 | * O_CREATE or by rename() */ | |
443 | ||
444 | log_debug_errno(r, "/etc/localtime doesn't exist yet, watching /etc instead."); | |
bbf5fd8e LP |
445 | r = sd_event_add_inotify(m->event, &new_event, "/etc", |
446 | IN_CREATE|IN_MOVED_TO|IN_ONLYDIR, manager_dispatch_timezone_change, m); | |
0cb21d8c | 447 | } |
bbf5fd8e LP |
448 | if (r < 0) |
449 | return log_error_errno(r, "Failed to create timezone change event source: %m"); | |
450 | ||
a5cc7e5a LP |
451 | /* Schedule this slightly earlier than the .timer event sources */ |
452 | r = sd_event_source_set_priority(new_event, SD_EVENT_PRIORITY_NORMAL-1); | |
453 | if (r < 0) | |
454 | return log_error_errno(r, "Failed to set priority of timezone change event sources: %m"); | |
455 | ||
bbf5fd8e | 456 | sd_event_source_unref(m->timezone_change_event_source); |
a5cc7e5a | 457 | m->timezone_change_event_source = TAKE_PTR(new_event); |
bbf5fd8e LP |
458 | |
459 | return 0; | |
460 | } | |
461 | ||
80876c20 | 462 | static int enable_special_signals(Manager *m) { |
718db961 | 463 | _cleanup_close_ int fd = -1; |
80876c20 LP |
464 | |
465 | assert(m); | |
466 | ||
638cece4 | 467 | if (MANAGER_IS_TEST_RUN(m)) |
37453b3a EV |
468 | return 0; |
469 | ||
a41b539e | 470 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
471 | * this will fail with EPERM (older) or EINVAL (newer), so |
472 | * ignore that. */ | |
4c701096 | 473 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 474 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 475 | |
a41b539e LP |
476 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
477 | if (fd < 0) { | |
478 | /* Support systems without virtual console */ | |
479 | if (fd != -ENOENT) | |
56f64d95 | 480 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 481 | } else { |
80876c20 LP |
482 | /* Enable that we get SIGWINCH on kbrequest */ |
483 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 484 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
485 | } |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
8750ac02 ZJS |
490 | #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1) |
491 | ||
ce578209 | 492 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
493 | struct sigaction sa = { |
494 | .sa_handler = SIG_DFL, | |
495 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
496 | }; | |
718db961 LP |
497 | sigset_t mask; |
498 | int r; | |
60918275 | 499 | |
ce578209 LP |
500 | assert(m); |
501 | ||
57c0c30e LP |
502 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
503 | ||
4dffec14 LP |
504 | /* We make liberal use of realtime signals here. On |
505 | * Linux/glibc we have 30 of them (with the exception of Linux | |
506 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
507 | * (aka SIGRTMAX). */ | |
7d793605 | 508 | |
4dffec14 | 509 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
510 | sigset_add_many(&mask, |
511 | SIGCHLD, /* Child died */ | |
512 | SIGTERM, /* Reexecute daemon */ | |
513 | SIGHUP, /* Reload configuration */ | |
514 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
515 | SIGUSR2, /* systemd: dump status */ | |
516 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
517 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
518 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 519 | |
7d793605 | 520 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 521 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
522 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
523 | SIGRTMIN+3, /* systemd: start halt.target */ | |
524 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
525 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 526 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
527 | |
528 | /* ... space for more special targets ... */ | |
529 | ||
0003d1ab LP |
530 | SIGRTMIN+13, /* systemd: Immediate halt */ |
531 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
532 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
533 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
534 | |
535 | /* ... space for more immediate system state changes ... */ | |
536 | ||
0658666b LP |
537 | SIGRTMIN+20, /* systemd: enable status messages */ |
538 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
539 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
540 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 541 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
542 | |
543 | /* .. one free signal here ... */ | |
544 | ||
8750ac02 ZJS |
545 | /* Apparently Linux on hppa had fewer RT signals until v3.18, |
546 | * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered, | |
547 | * see commit v3.17-7614-g1f25df2eff. | |
548 | * | |
549 | * We cannot unconditionally make use of those signals here, | |
550 | * so let's use a runtime check. Since these commands are | |
551 | * accessible by different means and only really a safety | |
552 | * net, the missing functionality on hppa shouldn't matter. | |
553 | */ | |
554 | ||
555 | RTSIG_IF_AVAILABLE(SIGRTMIN+26), /* systemd: set log target to journal-or-kmsg */ | |
556 | RTSIG_IF_AVAILABLE(SIGRTMIN+27), /* systemd: set log target to console */ | |
557 | RTSIG_IF_AVAILABLE(SIGRTMIN+28), /* systemd: set log target to kmsg */ | |
558 | RTSIG_IF_AVAILABLE(SIGRTMIN+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */ | |
4dffec14 LP |
559 | |
560 | /* ... one free signal here SIGRTMIN+30 ... */ | |
7d793605 | 561 | -1); |
ce578209 LP |
562 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
563 | ||
718db961 LP |
564 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
565 | if (m->signal_fd < 0) | |
ce578209 LP |
566 | return -errno; |
567 | ||
151b9b96 | 568 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
569 | if (r < 0) |
570 | return r; | |
ce578209 | 571 | |
7dfbe2e3 TG |
572 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
573 | ||
d8fdc620 LP |
574 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
575 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
576 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
577 | * status information before detecting that there's no process in a cgroup. */ | |
578 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
579 | if (r < 0) |
580 | return r; | |
581 | ||
463d0d15 | 582 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 583 | return enable_special_signals(m); |
e1414003 | 584 | |
ce578209 LP |
585 | return 0; |
586 | } | |
587 | ||
1ad6e8b3 | 588 | static char** sanitize_environment(char **l) { |
f069efb4 | 589 | |
47cf8ff2 | 590 | /* Let's remove some environment variables that we need ourselves to communicate with our clients */ |
f069efb4 | 591 | strv_env_unset_many( |
1ad6e8b3 | 592 | l, |
8047ac8f LP |
593 | "CACHE_DIRECTORY", |
594 | "CONFIGURATION_DIRECTORY", | |
bb0c0d6f | 595 | "CREDENTIALS_DIRECTORY", |
47cf8ff2 LP |
596 | "EXIT_CODE", |
597 | "EXIT_STATUS", | |
598 | "INVOCATION_ID", | |
599 | "JOURNAL_STREAM", | |
600 | "LISTEN_FDNAMES", | |
601 | "LISTEN_FDS", | |
602 | "LISTEN_PID", | |
8047ac8f | 603 | "LOGS_DIRECTORY", |
f069efb4 LP |
604 | "MAINPID", |
605 | "MANAGERPID", | |
47cf8ff2 | 606 | "NOTIFY_SOCKET", |
dcf3c3c3 | 607 | "PIDFILE", |
47cf8ff2 LP |
608 | "REMOTE_ADDR", |
609 | "REMOTE_PORT", | |
8047ac8f | 610 | "RUNTIME_DIRECTORY", |
47cf8ff2 | 611 | "SERVICE_RESULT", |
8047ac8f | 612 | "STATE_DIRECTORY", |
f069efb4 LP |
613 | "WATCHDOG_PID", |
614 | "WATCHDOG_USEC", | |
615 | NULL); | |
47cf8ff2 LP |
616 | |
617 | /* Let's order the environment alphabetically, just to make it pretty */ | |
1ad6e8b3 LP |
618 | strv_sort(l); |
619 | ||
620 | return l; | |
f069efb4 LP |
621 | } |
622 | ||
79a224c4 | 623 | int manager_default_environment(Manager *m) { |
db11487d ZJS |
624 | int r; |
625 | ||
71ecc858 LP |
626 | assert(m); |
627 | ||
1ad6e8b3 LP |
628 | m->transient_environment = strv_free(m->transient_environment); |
629 | ||
463d0d15 | 630 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
631 | /* The system manager always starts with a clean |
632 | * environment for its children. It does not import | |
71cb7d30 | 633 | * the kernel's or the parents' exported variables. |
e21fea24 | 634 | * |
71cb7d30 | 635 | * The initial passed environment is untouched to keep |
e21fea24 KS |
636 | * /proc/self/environ valid; it is used for tagging |
637 | * the init process inside containers. */ | |
1ad6e8b3 | 638 | m->transient_environment = strv_new("PATH=" DEFAULT_PATH); |
db11487d ZJS |
639 | if (!m->transient_environment) |
640 | return log_oom(); | |
e21fea24 KS |
641 | |
642 | /* Import locale variables LC_*= from configuration */ | |
1ad6e8b3 | 643 | (void) locale_setup(&m->transient_environment); |
db11487d ZJS |
644 | } else { |
645 | _cleanup_free_ char *k = NULL; | |
646 | ||
e21fea24 | 647 | /* The user manager passes its own environment |
db11487d | 648 | * along to its children, except for $PATH. */ |
1ad6e8b3 | 649 | m->transient_environment = strv_copy(environ); |
db11487d ZJS |
650 | if (!m->transient_environment) |
651 | return log_oom(); | |
652 | ||
653 | k = strdup("PATH=" DEFAULT_USER_PATH); | |
654 | if (!k) | |
655 | return log_oom(); | |
43d03a83 | 656 | |
db11487d ZJS |
657 | r = strv_env_replace(&m->transient_environment, k); |
658 | if (r < 0) | |
659 | return log_oom(); | |
660 | TAKE_PTR(k); | |
661 | } | |
8b55b8c4 | 662 | |
1ad6e8b3 | 663 | sanitize_environment(m->transient_environment); |
9d5a3757 | 664 | |
e21fea24 | 665 | return 0; |
71ecc858 LP |
666 | } |
667 | ||
3536f49e YW |
668 | static int manager_setup_prefix(Manager *m) { |
669 | struct table_entry { | |
670 | uint64_t type; | |
671 | const char *suffix; | |
672 | }; | |
673 | ||
72fd1768 | 674 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
675 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
676 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
677 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
678 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
3536f49e YW |
679 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, |
680 | }; | |
681 | ||
72fd1768 | 682 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
9978e631 ZJS |
683 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
684 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
685 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, | |
686 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
687 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
3536f49e YW |
688 | }; |
689 | ||
3536f49e YW |
690 | assert(m); |
691 | ||
24b45970 ZJS |
692 | const struct table_entry *p = MANAGER_IS_SYSTEM(m) ? paths_system : paths_user; |
693 | int r; | |
3536f49e | 694 | |
24b45970 | 695 | for (ExecDirectoryType i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
51327bcc | 696 | r = sd_path_lookup(p[i].type, p[i].suffix, &m->prefix[i]); |
3536f49e YW |
697 | if (r < 0) |
698 | return r; | |
699 | } | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
e8630e69 ZJS |
704 | static void manager_free_unit_name_maps(Manager *m) { |
705 | m->unit_id_map = hashmap_free(m->unit_id_map); | |
706 | m->unit_name_map = hashmap_free(m->unit_name_map); | |
3fb2326f | 707 | m->unit_path_cache = set_free(m->unit_path_cache); |
c2911d48 | 708 | m->unit_cache_timestamp_hash = 0; |
e8630e69 ZJS |
709 | } |
710 | ||
279d81dd LP |
711 | static int manager_setup_run_queue(Manager *m) { |
712 | int r; | |
713 | ||
714 | assert(m); | |
715 | assert(!m->run_queue_event_source); | |
716 | ||
717 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
721 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
722 | if (r < 0) | |
723 | return r; | |
724 | ||
725 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
726 | if (r < 0) | |
727 | return r; | |
728 | ||
729 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
575b300b LP |
734 | static int manager_setup_sigchld_event_source(Manager *m) { |
735 | int r; | |
736 | ||
737 | assert(m); | |
738 | assert(!m->sigchld_event_source); | |
739 | ||
740 | r = sd_event_add_defer(m->event, &m->sigchld_event_source, manager_dispatch_sigchld, m); | |
741 | if (r < 0) | |
742 | return r; | |
743 | ||
744 | r = sd_event_source_set_priority(m->sigchld_event_source, SD_EVENT_PRIORITY_NORMAL-7); | |
745 | if (r < 0) | |
746 | return r; | |
747 | ||
748 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); | |
749 | if (r < 0) | |
750 | return r; | |
751 | ||
752 | (void) sd_event_source_set_description(m->sigchld_event_source, "manager-sigchld"); | |
753 | ||
754 | return 0; | |
755 | } | |
756 | ||
638cece4 | 757 | int manager_new(UnitFileScope scope, ManagerTestRunFlags test_run_flags, Manager **_m) { |
c70cac54 | 758 | _cleanup_(manager_freep) Manager *m = NULL; |
bb0c0d6f | 759 | const char *e; |
e3dd987c | 760 | int r; |
8e274523 LP |
761 | |
762 | assert(_m); | |
463d0d15 | 763 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 764 | |
3ad228ce | 765 | m = new(Manager, 1); |
915b3753 | 766 | if (!m) |
8e274523 | 767 | return -ENOMEM; |
60918275 | 768 | |
3ad228ce LP |
769 | *m = (Manager) { |
770 | .unit_file_scope = scope, | |
771 | .objective = _MANAGER_OBJECTIVE_INVALID, | |
772 | ||
36cf4507 ZJS |
773 | .status_unit_format = STATUS_UNIT_FORMAT_DEFAULT, |
774 | ||
3ad228ce LP |
775 | .default_timer_accuracy_usec = USEC_PER_MINUTE, |
776 | .default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT, | |
777 | .default_tasks_accounting = true, | |
3a0f06c4 | 778 | .default_tasks_max = TASKS_MAX_UNSET, |
3ad228ce LP |
779 | .default_timeout_start_usec = DEFAULT_TIMEOUT_USEC, |
780 | .default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC, | |
781 | .default_restart_usec = DEFAULT_RESTART_USEC, | |
782 | ||
783 | .original_log_level = -1, | |
784 | .original_log_target = _LOG_TARGET_INVALID, | |
785 | ||
986935cf FB |
786 | .watchdog_overridden[WATCHDOG_RUNTIME] = USEC_INFINITY, |
787 | .watchdog_overridden[WATCHDOG_REBOOT] = USEC_INFINITY, | |
788 | .watchdog_overridden[WATCHDOG_KEXEC] = USEC_INFINITY, | |
789 | ||
44a41954 FB |
790 | .show_status_overridden = _SHOW_STATUS_INVALID, |
791 | ||
3ad228ce LP |
792 | .notify_fd = -1, |
793 | .cgroups_agent_fd = -1, | |
794 | .signal_fd = -1, | |
795 | .time_change_fd = -1, | |
796 | .user_lookup_fds = { -1, -1 }, | |
797 | .private_listen_fd = -1, | |
798 | .dev_autofs_fd = -1, | |
799 | .cgroup_inotify_fd = -1, | |
800 | .pin_cgroupfs_fd = -1, | |
801 | .ask_password_inotify_fd = -1, | |
802 | .idle_pipe = { -1, -1, -1, -1}, | |
803 | ||
804 | /* start as id #1, so that we can leave #0 around as "null-like" value */ | |
805 | .current_job_id = 1, | |
806 | ||
807 | .have_ask_password = -EINVAL, /* we don't know */ | |
808 | .first_boot = -1, | |
809 | .test_run_flags = test_run_flags, | |
afcfaa69 LP |
810 | |
811 | .default_oom_policy = OOM_STOP, | |
3ad228ce | 812 | }; |
80876c20 | 813 | |
349cc4a5 | 814 | #if ENABLE_EFI |
463d0d15 | 815 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
816 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
817 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
818 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
819 | #endif |
820 | ||
f2341e0a | 821 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
822 | if (MANAGER_IS_SYSTEM(m)) { |
823 | m->unit_log_field = "UNIT="; | |
824 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
825 | |
826 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 827 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
828 | } else { |
829 | m->unit_log_field = "USER_UNIT="; | |
830 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
831 | |
832 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 833 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 834 | } |
f2341e0a | 835 | |
2e5c94b9 | 836 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
8c227e7f | 837 | m->ctrl_alt_del_ratelimit = (RateLimit) { .interval = 2 * USEC_PER_SEC, .burst = 7 }; |
2e5c94b9 | 838 | |
e21fea24 KS |
839 | r = manager_default_environment(m); |
840 | if (r < 0) | |
c70cac54 | 841 | return r; |
1137a57c | 842 | |
d5099efc | 843 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 844 | if (r < 0) |
c70cac54 | 845 | return r; |
60918275 | 846 | |
548f6937 | 847 | r = hashmap_ensure_allocated(&m->cgroup_unit, &path_hash_ops); |
718db961 | 848 | if (r < 0) |
c70cac54 | 849 | return r; |
9152c765 | 850 | |
d5099efc | 851 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 852 | if (r < 0) |
c70cac54 | 853 | return r; |
05e343b7 | 854 | |
da8e1782 MO |
855 | r = prioq_ensure_allocated(&m->run_queue, compare_job_priority); |
856 | if (r < 0) | |
857 | return r; | |
858 | ||
e8112e67 | 859 | r = manager_setup_prefix(m); |
718db961 | 860 | if (r < 0) |
c70cac54 | 861 | return r; |
8742514c | 862 | |
bb0c0d6f LP |
863 | e = secure_getenv("CREDENTIALS_DIRECTORY"); |
864 | if (e) { | |
865 | m->received_credentials = strdup(e); | |
866 | if (!m->received_credentials) | |
867 | return -ENOMEM; | |
868 | } | |
869 | ||
e8112e67 | 870 | r = sd_event_default(&m->event); |
8742514c | 871 | if (r < 0) |
c70cac54 | 872 | return r; |
9152c765 | 873 | |
e8112e67 | 874 | r = manager_setup_run_queue(m); |
a1d32bac | 875 | if (r < 0) |
c70cac54 | 876 | return r; |
8e274523 | 877 | |
e8112e67 ZJS |
878 | if (test_run_flags == MANAGER_TEST_RUN_MINIMAL) { |
879 | m->cgroup_root = strdup(""); | |
880 | if (!m->cgroup_root) | |
881 | return -ENOMEM; | |
882 | } else { | |
883 | r = manager_setup_signals(m); | |
884 | if (r < 0) | |
885 | return r; | |
8c47c732 | 886 | |
e8112e67 ZJS |
887 | r = manager_setup_cgroup(m); |
888 | if (r < 0) | |
889 | return r; | |
575b300b | 890 | |
e8112e67 ZJS |
891 | r = manager_setup_time_change(m); |
892 | if (r < 0) | |
893 | return r; | |
9670d583 | 894 | |
bbf5fd8e LP |
895 | r = manager_read_timezone_stat(m); |
896 | if (r < 0) | |
897 | return r; | |
898 | ||
ea5c5f68 | 899 | (void) manager_setup_timezone_change(m); |
bbf5fd8e | 900 | |
e8112e67 ZJS |
901 | r = manager_setup_sigchld_event_source(m); |
902 | if (r < 0) | |
903 | return r; | |
904 | } | |
e27fe688 | 905 | |
2f8c48b6 AZ |
906 | if (test_run_flags == 0) { |
907 | if (MANAGER_IS_SYSTEM(m)) | |
908 | r = mkdir_label("/run/systemd/units", 0755); | |
909 | else { | |
910 | _cleanup_free_ char *units_path = NULL; | |
911 | r = xdg_user_runtime_dir(&units_path, "/systemd/units"); | |
912 | if (r < 0) | |
913 | return r; | |
914 | r = mkdir_p_label(units_path, 0755); | |
915 | } | |
916 | ||
d3070fbd | 917 | if (r < 0 && r != -EEXIST) |
c70cac54 | 918 | return r; |
d3070fbd LP |
919 | } |
920 | ||
e27fe688 LP |
921 | m->taint_usr = |
922 | !in_initrd() && | |
923 | dir_is_empty("/usr") > 0; | |
924 | ||
232f6754 ZJS |
925 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
926 | * since they might have gotten serialized across the reexec. */ | |
3536f49e | 927 | |
1cc6c93a YW |
928 | *_m = TAKE_PTR(m); |
929 | ||
8e274523 | 930 | return 0; |
60918275 LP |
931 | } |
932 | ||
d86f9d52 | 933 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 934 | int r; |
d86f9d52 | 935 | |
638cece4 | 936 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
937 | return 0; |
938 | ||
d86f9d52 LP |
939 | if (m->notify_fd < 0) { |
940 | _cleanup_close_ int fd = -1; | |
f36a9d59 ZJS |
941 | union sockaddr_union sa; |
942 | socklen_t sa_len; | |
d86f9d52 LP |
943 | |
944 | /* First free all secondary fields */ | |
a1e58e8e | 945 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
946 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
947 | ||
948 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
949 | if (fd < 0) |
950 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 951 | |
a47806fa LP |
952 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
953 | ||
b910cc72 | 954 | m->notify_socket = path_join(m->prefix[EXEC_DIRECTORY_RUNTIME], "systemd/notify"); |
498e87d6 LP |
955 | if (!m->notify_socket) |
956 | return log_oom(); | |
957 | ||
f36a9d59 ZJS |
958 | r = sockaddr_un_set_path(&sa.un, m->notify_socket); |
959 | if (r < 0) | |
960 | return log_error_errno(r, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", | |
961 | m->notify_socket); | |
962 | sa_len = r; | |
15a3e96f | 963 | |
498e87d6 | 964 | (void) mkdir_parents_label(m->notify_socket, 0755); |
fbda85b0 | 965 | (void) sockaddr_un_unlink(&sa.un); |
7181dbdb | 966 | |
45ae2f72 | 967 | r = mac_selinux_bind(fd, &sa.sa, sa_len); |
4a62c710 | 968 | if (r < 0) |
45ae2f72 | 969 | return log_error_errno(r, "bind(%s) failed: %m", m->notify_socket); |
d86f9d52 | 970 | |
2ff48e98 | 971 | r = setsockopt_int(fd, SOL_SOCKET, SO_PASSCRED, true); |
4a62c710 | 972 | if (r < 0) |
2ff48e98 | 973 | return log_error_errno(r, "SO_PASSCRED failed: %m"); |
d86f9d52 | 974 | |
c10d6bdb | 975 | m->notify_fd = TAKE_FD(fd); |
d86f9d52 LP |
976 | |
977 | log_debug("Using notification socket %s", m->notify_socket); | |
978 | } | |
979 | ||
980 | if (!m->notify_event_source) { | |
151b9b96 | 981 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
982 | if (r < 0) |
983 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 984 | |
d8fdc620 LP |
985 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
986 | * service an exit message belongs. */ | |
575b300b | 987 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-8); |
23bbb0de MS |
988 | if (r < 0) |
989 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
990 | |
991 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
992 | } |
993 | ||
994 | return 0; | |
995 | } | |
996 | ||
d8fdc620 LP |
997 | static int manager_setup_cgroups_agent(Manager *m) { |
998 | ||
999 | static const union sockaddr_union sa = { | |
1000 | .un.sun_family = AF_UNIX, | |
1001 | .un.sun_path = "/run/systemd/cgroups-agent", | |
1002 | }; | |
1003 | int r; | |
1004 | ||
1005 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
1006 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
1007 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
1008 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
1009 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
1010 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
1011 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
1012 | * we thus won't lose messages. | |
1013 | * | |
1014 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
1015 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
1016 | * bus for these messages. */ | |
1017 | ||
638cece4 | 1018 | if (MANAGER_IS_TEST_RUN(m)) |
d8fdc620 LP |
1019 | return 0; |
1020 | ||
1021 | if (!MANAGER_IS_SYSTEM(m)) | |
1022 | return 0; | |
1023 | ||
c22800e4 | 1024 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
1025 | if (r < 0) |
1026 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
1027 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
1028 | return 0; |
1029 | ||
1030 | if (m->cgroups_agent_fd < 0) { | |
1031 | _cleanup_close_ int fd = -1; | |
1032 | ||
1033 | /* First free all secondary fields */ | |
1034 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
1035 | ||
1036 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1037 | if (fd < 0) | |
1038 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
1039 | ||
1040 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
1041 | ||
155b6876 | 1042 | (void) sockaddr_un_unlink(&sa.un); |
d8fdc620 LP |
1043 | |
1044 | /* Only allow root to connect to this socket */ | |
1045 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 1046 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
1047 | if (r < 0) |
1048 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
1049 | ||
0b7e8b32 | 1050 | m->cgroups_agent_fd = TAKE_FD(fd); |
d8fdc620 LP |
1051 | } |
1052 | ||
1053 | if (!m->cgroups_agent_event_source) { | |
1054 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
1055 | if (r < 0) | |
1056 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
1057 | ||
cbe83389 LP |
1058 | /* Process cgroups notifications early. Note that when the agent notification is received |
1059 | * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than | |
1060 | * that. Also see handling of cgroup inotify for the unified cgroup stuff. */ | |
1061 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-9); | |
d8fdc620 LP |
1062 | if (r < 0) |
1063 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
1064 | ||
1065 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
1066 | } | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
00d9ef85 LP |
1071 | static int manager_setup_user_lookup_fd(Manager *m) { |
1072 | int r; | |
1073 | ||
1074 | assert(m); | |
1075 | ||
1076 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
1077 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
1078 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
1079 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
1080 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
1081 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
1082 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
1083 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
1084 | * this purpose. | |
1085 | * | |
1086 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
1087 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
1088 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
1089 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
1090 | * | |
1091 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
1092 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
1093 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
1094 | ||
1095 | if (m->user_lookup_fds[0] < 0) { | |
1096 | ||
1097 | /* Free all secondary fields */ | |
1098 | safe_close_pair(m->user_lookup_fds); | |
1099 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
1100 | ||
1101 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
1102 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
1103 | ||
1104 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
1105 | } | |
1106 | ||
1107 | if (!m->user_lookup_event_source) { | |
1108 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
1109 | if (r < 0) | |
1110 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
1111 | ||
1112 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
1113 | * resolutions */ | |
67ae4e8d | 1114 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-11); |
00d9ef85 | 1115 | if (r < 0) |
5238e957 | 1116 | return log_error_errno(errno, "Failed to set priority of user lookup event source: %m"); |
00d9ef85 LP |
1117 | |
1118 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
1119 | } | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | ||
23a177ef | 1124 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 1125 | Unit *u; |
23a177ef LP |
1126 | unsigned n = 0; |
1127 | ||
1128 | assert(m); | |
1129 | ||
595ed347 MS |
1130 | while ((u = m->cleanup_queue)) { |
1131 | assert(u->in_cleanup_queue); | |
23a177ef | 1132 | |
595ed347 | 1133 | unit_free(u); |
23a177ef LP |
1134 | n++; |
1135 | } | |
1136 | ||
1137 | return n; | |
1138 | } | |
1139 | ||
eced69b3 | 1140 | enum { |
35b8ca3a | 1141 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
1142 | GC_OFFSET_UNSURE, /* No clue */ |
1143 | GC_OFFSET_GOOD, /* We still need this unit */ | |
1144 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
1145 | _GC_OFFSET_MAX | |
1146 | }; | |
1147 | ||
00d9ef85 | 1148 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f | 1149 | Unit *other; |
eef85c4a LP |
1150 | Iterator i; |
1151 | void *v; | |
4892084f LN |
1152 | |
1153 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
1154 | ||
1155 | /* Recursively mark referenced units as GOOD as well */ | |
eef85c4a | 1156 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCES], i) |
4892084f LN |
1157 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
1158 | unit_gc_mark_good(other, gc_marker); | |
1159 | } | |
1160 | ||
eced69b3 | 1161 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 1162 | Unit *other; |
eced69b3 | 1163 | bool is_bad; |
eef85c4a LP |
1164 | Iterator i; |
1165 | void *v; | |
701cc384 LP |
1166 | |
1167 | assert(u); | |
1168 | ||
4c701096 YW |
1169 | if (IN_SET(u->gc_marker - gc_marker, |
1170 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1171 | return; |
1172 | ||
ac155bb8 | 1173 | if (u->in_cleanup_queue) |
701cc384 LP |
1174 | goto bad; |
1175 | ||
f2f725e5 | 1176 | if (!unit_may_gc(u)) |
701cc384 LP |
1177 | goto good; |
1178 | ||
ac155bb8 | 1179 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1180 | |
1181 | is_bad = true; | |
1182 | ||
eef85c4a | 1183 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
1184 | unit_gc_sweep(other, gc_marker); |
1185 | ||
ac155bb8 | 1186 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1187 | goto good; |
eced69b3 | 1188 | |
ac155bb8 | 1189 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1190 | is_bad = false; |
701cc384 LP |
1191 | } |
1192 | ||
2641f02e ZJS |
1193 | if (u->refs_by_target) { |
1194 | const UnitRef *ref; | |
1195 | ||
1196 | LIST_FOREACH(refs_by_target, ref, u->refs_by_target) { | |
1197 | unit_gc_sweep(ref->source, gc_marker); | |
1198 | ||
1199 | if (ref->source->gc_marker == gc_marker + GC_OFFSET_GOOD) | |
1200 | goto good; | |
1201 | ||
1202 | if (ref->source->gc_marker != gc_marker + GC_OFFSET_BAD) | |
1203 | is_bad = false; | |
1204 | } | |
1205 | } | |
701cc384 | 1206 | |
eced69b3 LP |
1207 | if (is_bad) |
1208 | goto bad; | |
1209 | ||
1210 | /* We were unable to find anything out about this entry, so | |
1211 | * let's investigate it later */ | |
ac155bb8 | 1212 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1213 | unit_add_to_gc_queue(u); |
1214 | return; | |
1215 | ||
701cc384 | 1216 | bad: |
eced69b3 LP |
1217 | /* We definitely know that this one is not useful anymore, so |
1218 | * let's mark it for deletion */ | |
ac155bb8 | 1219 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1220 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1221 | return; |
1222 | ||
1223 | good: | |
4892084f | 1224 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1225 | } |
1226 | ||
c5a97ed1 LP |
1227 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1228 | unsigned n = 0, gc_marker; | |
595ed347 | 1229 | Unit *u; |
701cc384 LP |
1230 | |
1231 | assert(m); | |
1232 | ||
cf1265e1 | 1233 | /* log_debug("Running GC..."); */ |
701cc384 | 1234 | |
eced69b3 LP |
1235 | m->gc_marker += _GC_OFFSET_MAX; |
1236 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1237 | m->gc_marker = 1; |
701cc384 | 1238 | |
eced69b3 LP |
1239 | gc_marker = m->gc_marker; |
1240 | ||
c5a97ed1 | 1241 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1242 | assert(u->in_gc_queue); |
701cc384 | 1243 | |
595ed347 | 1244 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1245 | |
c5a97ed1 | 1246 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1247 | u->in_gc_queue = false; |
701cc384 LP |
1248 | |
1249 | n++; | |
1250 | ||
4c701096 YW |
1251 | if (IN_SET(u->gc_marker - gc_marker, |
1252 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1253 | if (u->id) |
f2341e0a | 1254 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1255 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1256 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1257 | } |
1258 | } | |
1259 | ||
701cc384 LP |
1260 | return n; |
1261 | } | |
1262 | ||
c5a97ed1 LP |
1263 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1264 | unsigned n = 0; | |
1265 | Job *j; | |
1266 | ||
1267 | assert(m); | |
1268 | ||
1269 | while ((j = m->gc_job_queue)) { | |
1270 | assert(j->in_gc_queue); | |
1271 | ||
1272 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1273 | j->in_gc_queue = false; | |
1274 | ||
1275 | n++; | |
1276 | ||
2ab3050f | 1277 | if (!job_may_gc(j)) |
c5a97ed1 LP |
1278 | continue; |
1279 | ||
1280 | log_unit_debug(j->unit, "Collecting job."); | |
1281 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1282 | } | |
1283 | ||
1284 | return n; | |
1285 | } | |
1286 | ||
a3c1168a LP |
1287 | static unsigned manager_dispatch_stop_when_unneeded_queue(Manager *m) { |
1288 | unsigned n = 0; | |
1289 | Unit *u; | |
1290 | int r; | |
1291 | ||
1292 | assert(m); | |
1293 | ||
1294 | while ((u = m->stop_when_unneeded_queue)) { | |
1295 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1296 | assert(m->stop_when_unneeded_queue); | |
1297 | ||
1298 | assert(u->in_stop_when_unneeded_queue); | |
1299 | LIST_REMOVE(stop_when_unneeded_queue, m->stop_when_unneeded_queue, u); | |
1300 | u->in_stop_when_unneeded_queue = false; | |
1301 | ||
1302 | n++; | |
1303 | ||
1304 | if (!unit_is_unneeded(u)) | |
1305 | continue; | |
1306 | ||
1307 | log_unit_debug(u, "Unit is not needed anymore."); | |
1308 | ||
1309 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1310 | * service being unnecessary after a while. */ | |
1311 | ||
1312 | if (!ratelimit_below(&u->auto_stop_ratelimit)) { | |
1313 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); | |
1314 | continue; | |
1315 | } | |
1316 | ||
1317 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
50cbaba4 | 1318 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, NULL, &error, NULL); |
a3c1168a LP |
1319 | if (r < 0) |
1320 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1321 | } | |
1322 | ||
1323 | return n; | |
1324 | } | |
1325 | ||
a16e1123 | 1326 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1327 | Unit *u; |
60918275 LP |
1328 | |
1329 | assert(m); | |
1330 | ||
87f0e418 LP |
1331 | while ((u = hashmap_first(m->units))) |
1332 | unit_free(u); | |
964e0949 LP |
1333 | |
1334 | manager_dispatch_cleanup_queue(m); | |
1335 | ||
1336 | assert(!m->load_queue); | |
da8e1782 | 1337 | assert(prioq_isempty(m->run_queue)); |
964e0949 LP |
1338 | assert(!m->dbus_unit_queue); |
1339 | assert(!m->dbus_job_queue); | |
1340 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1341 | assert(!m->gc_unit_queue); |
1342 | assert(!m->gc_job_queue); | |
a3c1168a | 1343 | assert(!m->stop_when_unneeded_queue); |
964e0949 | 1344 | |
964e0949 LP |
1345 | assert(hashmap_isempty(m->jobs)); |
1346 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1347 | |
1348 | m->n_on_console = 0; | |
1349 | m->n_running_jobs = 0; | |
1e75824c MK |
1350 | m->n_installed_jobs = 0; |
1351 | m->n_failed_jobs = 0; | |
a16e1123 LP |
1352 | } |
1353 | ||
06d8d842 | 1354 | Manager* manager_free(Manager *m) { |
06d8d842 ZJS |
1355 | if (!m) |
1356 | return NULL; | |
a16e1123 LP |
1357 | |
1358 | manager_clear_jobs_and_units(m); | |
23a177ef | 1359 | |
24b45970 | 1360 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) |
7824bbeb LP |
1361 | if (unit_vtable[c]->shutdown) |
1362 | unit_vtable[c]->shutdown(m); | |
1363 | ||
86036b26 LP |
1364 | /* Keep the cgroup hierarchy in place except when we know we are going down for good */ |
1365 | manager_shutdown_cgroup(m, IN_SET(m->objective, MANAGER_EXIT, MANAGER_REBOOT, MANAGER_POWEROFF, MANAGER_HALT, MANAGER_KEXEC)); | |
8e274523 | 1366 | |
07a78643 | 1367 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1368 | |
5e8d1c9a | 1369 | bus_done(m); |
19d22d43 | 1370 | manager_varlink_done(m); |
ea430986 | 1371 | |
e8a565cb YW |
1372 | exec_runtime_vacuum(m); |
1373 | hashmap_free(m->exec_runtime_by_id); | |
1374 | ||
29206d46 LP |
1375 | dynamic_user_vacuum(m, false); |
1376 | hashmap_free(m->dynamic_users); | |
1377 | ||
87f0e418 | 1378 | hashmap_free(m->units); |
4b58153d | 1379 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1380 | hashmap_free(m->jobs); |
62a76913 | 1381 | hashmap_free(m->watch_pids); |
05e343b7 | 1382 | hashmap_free(m->watch_bus); |
9152c765 | 1383 | |
da8e1782 MO |
1384 | prioq_free(m->run_queue); |
1385 | ||
95ae05c0 | 1386 | set_free(m->startup_units); |
f755e3b7 LP |
1387 | set_free(m->failed_units); |
1388 | ||
718db961 | 1389 | sd_event_source_unref(m->signal_event_source); |
575b300b | 1390 | sd_event_source_unref(m->sigchld_event_source); |
718db961 | 1391 | sd_event_source_unref(m->notify_event_source); |
d8fdc620 | 1392 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 | 1393 | sd_event_source_unref(m->time_change_event_source); |
bbf5fd8e | 1394 | sd_event_source_unref(m->timezone_change_event_source); |
718db961 | 1395 | sd_event_source_unref(m->jobs_in_progress_event_source); |
752b5905 | 1396 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1397 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1398 | |
03e334a1 LP |
1399 | safe_close(m->signal_fd); |
1400 | safe_close(m->notify_fd); | |
d8fdc620 | 1401 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1402 | safe_close(m->time_change_fd); |
00d9ef85 | 1403 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1404 | |
e46b13c8 ZJS |
1405 | manager_close_ask_password(m); |
1406 | ||
718db961 LP |
1407 | manager_close_idle_pipe(m); |
1408 | ||
1409 | sd_event_unref(m->event); | |
60918275 | 1410 | |
c952c6ec LP |
1411 | free(m->notify_socket); |
1412 | ||
84e3543e | 1413 | lookup_paths_free(&m->lookup_paths); |
1ad6e8b3 LP |
1414 | strv_free(m->transient_environment); |
1415 | strv_free(m->client_environment); | |
036643a2 | 1416 | |
4ad49000 | 1417 | hashmap_free(m->cgroup_unit); |
e8630e69 | 1418 | manager_free_unit_name_maps(m); |
33be102a | 1419 | |
664f88a7 LP |
1420 | free(m->switch_root); |
1421 | free(m->switch_root_init); | |
1422 | ||
31ce987c | 1423 | rlimit_free_all(m->rlimit); |
c93ff2e9 | 1424 | |
a57f7e2c LP |
1425 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1426 | hashmap_free(m->units_requiring_mounts_for); | |
1427 | ||
00d9ef85 LP |
1428 | hashmap_free(m->uid_refs); |
1429 | hashmap_free(m->gid_refs); | |
1430 | ||
24b45970 | 1431 | for (ExecDirectoryType dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a | 1432 | m->prefix[dt] = mfree(m->prefix[dt]); |
bb0c0d6f | 1433 | free(m->received_credentials); |
35aba85a | 1434 | |
6b430fdb | 1435 | return mfree(m); |
60918275 LP |
1436 | } |
1437 | ||
04eb582a | 1438 | static void manager_enumerate_perpetual(Manager *m) { |
04eb582a LP |
1439 | assert(m); |
1440 | ||
b1d5246d ZJS |
1441 | if (m->test_run_flags == MANAGER_TEST_RUN_MINIMAL) |
1442 | return; | |
1443 | ||
04eb582a | 1444 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1445 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
04eb582a LP |
1446 | if (!unit_type_supported(c)) { |
1447 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); | |
1448 | continue; | |
1449 | } | |
1450 | ||
1451 | if (unit_vtable[c]->enumerate_perpetual) | |
1452 | unit_vtable[c]->enumerate_perpetual(m); | |
1453 | } | |
1454 | } | |
1455 | ||
a1113e08 | 1456 | static void manager_enumerate(Manager *m) { |
f50e0a01 LP |
1457 | assert(m); |
1458 | ||
b1d5246d ZJS |
1459 | if (m->test_run_flags == MANAGER_TEST_RUN_MINIMAL) |
1460 | return; | |
1461 | ||
04eb582a | 1462 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1463 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1464 | if (!unit_type_supported(c)) { |
03afec3c | 1465 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1466 | continue; |
a57f7e2c | 1467 | } |
f50e0a01 | 1468 | |
94b01dae ZJS |
1469 | if (unit_vtable[c]->enumerate) |
1470 | unit_vtable[c]->enumerate(m); | |
0faacd47 LP |
1471 | } |
1472 | ||
f50e0a01 | 1473 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1474 | } |
1475 | ||
007c6337 | 1476 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1477 | Iterator i; |
1478 | Unit *u; | |
1479 | char *k; | |
007c6337 | 1480 | int r; |
a16e1123 LP |
1481 | |
1482 | assert(m); | |
f50e0a01 | 1483 | |
f0831ed2 LP |
1484 | log_debug("Invoking unit coldplug() handlers…"); |
1485 | ||
1486 | /* Let's place the units back into their deserialized state */ | |
f50e0a01 LP |
1487 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { |
1488 | ||
1489 | /* ignore aliases */ | |
ac155bb8 | 1490 | if (u->id != k) |
f50e0a01 LP |
1491 | continue; |
1492 | ||
007c6337 LP |
1493 | r = unit_coldplug(u); |
1494 | if (r < 0) | |
1495 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1496 | } |
a16e1123 LP |
1497 | } |
1498 | ||
f0831ed2 LP |
1499 | static void manager_catchup(Manager *m) { |
1500 | Iterator i; | |
1501 | Unit *u; | |
1502 | char *k; | |
1503 | ||
1504 | assert(m); | |
1505 | ||
1506 | log_debug("Invoking unit catchup() handlers…"); | |
1507 | ||
1508 | /* Let's catch up on any state changes that happened while we were reloading/reexecing */ | |
1509 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1510 | ||
1511 | /* ignore aliases */ | |
1512 | if (u->id != k) | |
1513 | continue; | |
1514 | ||
1515 | unit_catchup(u); | |
1516 | } | |
1517 | } | |
1518 | ||
9ff1a6f1 | 1519 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1520 | Iterator i; |
9ff1a6f1 | 1521 | Unit *u; |
9588bc32 LP |
1522 | |
1523 | assert(m); | |
1524 | ||
1525 | HASHMAP_FOREACH(u, m->units, i) { | |
1526 | ||
1527 | if (fdset_size(fds) <= 0) | |
1528 | break; | |
1529 | ||
9ff1a6f1 LP |
1530 | if (!UNIT_VTABLE(u)->distribute_fds) |
1531 | continue; | |
9588bc32 | 1532 | |
9ff1a6f1 LP |
1533 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1534 | } | |
9588bc32 LP |
1535 | } |
1536 | ||
8559b3b7 LP |
1537 | static bool manager_dbus_is_running(Manager *m, bool deserialized) { |
1538 | Unit *u; | |
1539 | ||
1540 | assert(m); | |
1541 | ||
1542 | /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket | |
1543 | * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit | |
1544 | * rather than the current one. */ | |
1545 | ||
638cece4 | 1546 | if (MANAGER_IS_TEST_RUN(m)) |
8559b3b7 LP |
1547 | return false; |
1548 | ||
8559b3b7 LP |
1549 | u = manager_get_unit(m, SPECIAL_DBUS_SOCKET); |
1550 | if (!u) | |
1551 | return false; | |
1552 | if ((deserialized ? SOCKET(u)->deserialized_state : SOCKET(u)->state) != SOCKET_RUNNING) | |
1553 | return false; | |
1554 | ||
1555 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1556 | if (!u) | |
1557 | return false; | |
1558 | if (!IN_SET((deserialized ? SERVICE(u)->deserialized_state : SERVICE(u)->state), SERVICE_RUNNING, SERVICE_RELOAD)) | |
1559 | return false; | |
1560 | ||
1561 | return true; | |
1562 | } | |
1563 | ||
9d4c195c LP |
1564 | static void manager_setup_bus(Manager *m) { |
1565 | assert(m); | |
1566 | ||
1567 | /* Let's set up our private bus connection now, unconditionally */ | |
1568 | (void) bus_init_private(m); | |
1569 | ||
1570 | /* If we are in --user mode also connect to the system bus now */ | |
1571 | if (MANAGER_IS_USER(m)) | |
1572 | (void) bus_init_system(m); | |
1573 | ||
1574 | /* Let's connect to the bus now, but only if the unit is supposed to be up */ | |
1575 | if (manager_dbus_is_running(m, MANAGER_IS_RELOADING(m))) { | |
1576 | (void) bus_init_api(m); | |
1577 | ||
1578 | if (MANAGER_IS_SYSTEM(m)) | |
1579 | (void) bus_init_system(m); | |
1580 | } | |
1581 | } | |
1582 | ||
159f1e76 LP |
1583 | static void manager_preset_all(Manager *m) { |
1584 | int r; | |
1585 | ||
1586 | assert(m); | |
1587 | ||
1588 | if (m->first_boot <= 0) | |
1589 | return; | |
1590 | ||
1591 | if (!MANAGER_IS_SYSTEM(m)) | |
1592 | return; | |
1593 | ||
638cece4 | 1594 | if (MANAGER_IS_TEST_RUN(m)) |
159f1e76 LP |
1595 | return; |
1596 | ||
1597 | /* If this is the first boot, and we are in the host system, then preset everything */ | |
1598 | r = unit_file_preset_all(UNIT_FILE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); | |
1599 | if (r < 0) | |
1600 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1601 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
1602 | else | |
1603 | log_info("Populated /etc with preset unit settings."); | |
1604 | } | |
1605 | ||
5ce5e1ad LP |
1606 | static void manager_ready(Manager *m) { |
1607 | assert(m); | |
1608 | ||
1609 | /* After having loaded everything, do the final round of catching up with what might have changed */ | |
1610 | ||
1611 | m->objective = MANAGER_OK; /* Tell everyone we are up now */ | |
1612 | ||
1613 | /* It might be safe to log to the journal now and connect to dbus */ | |
1614 | manager_recheck_journal(m); | |
1615 | manager_recheck_dbus(m); | |
1616 | ||
5ce5e1ad LP |
1617 | /* Let's finally catch up with any changes that took place while we were reloading/reexecing */ |
1618 | manager_catchup(m); | |
c6e892bc YW |
1619 | |
1620 | m->honor_device_enumeration = true; | |
5ce5e1ad LP |
1621 | } |
1622 | ||
d147e2b6 ZJS |
1623 | static Manager* manager_reloading_start(Manager *m) { |
1624 | m->n_reloading++; | |
1625 | return m; | |
1626 | } | |
1627 | static void manager_reloading_stopp(Manager **m) { | |
1628 | if (*m) { | |
1629 | assert((*m)->n_reloading > 0); | |
1630 | (*m)->n_reloading--; | |
1631 | } | |
1632 | } | |
1633 | ||
a16e1123 | 1634 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
17f01ace | 1635 | int r; |
a16e1123 LP |
1636 | |
1637 | assert(m); | |
1638 | ||
a1f31f47 ZJS |
1639 | /* If we are running in test mode, we still want to run the generators, |
1640 | * but we should not touch the real generator directories. */ | |
1641 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, | |
638cece4 | 1642 | MANAGER_IS_TEST_RUN(m) ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
a1f31f47 | 1643 | NULL); |
e801700e | 1644 | if (r < 0) |
572986ca | 1645 | return log_error_errno(r, "Failed to initialize path lookup table: %m"); |
5a1e9937 | 1646 | |
d4ee7bd8 | 1647 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START)); |
eb523bfb LP |
1648 | r = manager_run_environment_generators(m); |
1649 | if (r >= 0) | |
1650 | r = manager_run_generators(m); | |
d4ee7bd8 | 1651 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH)); |
07719a21 LP |
1652 | if (r < 0) |
1653 | return r; | |
1654 | ||
159f1e76 | 1655 | manager_preset_all(m); |
572986ca | 1656 | |
581fef8d | 1657 | lookup_paths_log(&m->lookup_paths); |
572986ca | 1658 | |
4df7d537 ZJS |
1659 | { |
1660 | /* This block is (optionally) done with the reloading counter bumped */ | |
1661 | _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; | |
1662 | ||
1663 | /* If we will deserialize make sure that during enumeration this is already known, so we increase the | |
1664 | * counter here already */ | |
1665 | if (serialization) | |
1666 | reloading = manager_reloading_start(m); | |
1667 | ||
1668 | /* First, enumerate what we can from all config files */ | |
1669 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START)); | |
1670 | manager_enumerate_perpetual(m); | |
1671 | manager_enumerate(m); | |
1672 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH)); | |
1673 | ||
1674 | /* Second, deserialize if there is something to deserialize */ | |
1675 | if (serialization) { | |
1676 | r = manager_deserialize(m, serialization, fds); | |
1677 | if (r < 0) | |
1678 | return log_error_errno(r, "Deserialization failed: %m"); | |
1679 | } | |
01e10de3 | 1680 | |
4df7d537 ZJS |
1681 | /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass |
1682 | * some file descriptors to us pre-initialized. This enables socket-based activation of entire | |
1683 | * containers. */ | |
1684 | manager_distribute_fds(m, fds); | |
d86f9d52 | 1685 | |
4df7d537 ZJS |
1686 | /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */ |
1687 | r = manager_setup_notify(m); | |
1688 | if (r < 0) | |
1689 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1690 | return r; | |
d8fdc620 | 1691 | |
4df7d537 ZJS |
1692 | r = manager_setup_cgroups_agent(m); |
1693 | if (r < 0) | |
1694 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1695 | return r; | |
00d9ef85 | 1696 | |
4df7d537 ZJS |
1697 | r = manager_setup_user_lookup_fd(m); |
1698 | if (r < 0) | |
1699 | /* This shouldn't fail, except if things are really broken. */ | |
1700 | return r; | |
8559b3b7 | 1701 | |
4df7d537 ZJS |
1702 | /* Connect to the bus if we are good for it */ |
1703 | manager_setup_bus(m); | |
e3dd987c | 1704 | |
5238e957 | 1705 | /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */ |
4df7d537 ZJS |
1706 | r = bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); |
1707 | if (r < 0) | |
1708 | log_warning_errno(r, "Failed to deserialized tracked clients, ignoring: %m"); | |
1709 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
a16e1123 | 1710 | |
19d22d43 LP |
1711 | r = manager_varlink_init(m); |
1712 | if (r < 0) | |
1713 | log_warning_errno(r, "Failed to set up Varlink server, ignoring: %m"); | |
1714 | ||
4df7d537 ZJS |
1715 | /* Third, fire things up! */ |
1716 | manager_coldplug(m); | |
3ad2afb6 | 1717 | |
4df7d537 ZJS |
1718 | /* Clean up runtime objects */ |
1719 | manager_vacuum(m); | |
71445ae7 | 1720 | |
4df7d537 ZJS |
1721 | if (serialization) |
1722 | /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the | |
1723 | * reload is finished */ | |
1724 | m->send_reloading_done = true; | |
9f611ad8 LP |
1725 | } |
1726 | ||
5ce5e1ad | 1727 | manager_ready(m); |
f0831ed2 | 1728 | |
17f01ace | 1729 | return 0; |
f50e0a01 LP |
1730 | } |
1731 | ||
50cbaba4 LP |
1732 | int manager_add_job( |
1733 | Manager *m, | |
1734 | JobType type, | |
1735 | Unit *unit, | |
1736 | JobMode mode, | |
1737 | Set *affected_jobs, | |
1738 | sd_bus_error *error, | |
1739 | Job **ret) { | |
1740 | ||
7527cb52 | 1741 | Transaction *tr; |
50cbaba4 | 1742 | int r; |
e5b5ae50 LP |
1743 | |
1744 | assert(m); | |
1745 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1746 | assert(unit); |
e5b5ae50 | 1747 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1748 | |
7358dc02 | 1749 | if (mode == JOB_ISOLATE && type != JOB_START) |
50cbaba4 | 1750 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); |
c497c7a9 | 1751 | |
7358dc02 | 1752 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
50cbaba4 | 1753 | return sd_bus_error_setf(error, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
2528a7a6 | 1754 | |
1f0f9f21 KK |
1755 | if (mode == JOB_TRIGGERING && type != JOB_STOP) |
1756 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "--job-mode=triggering is only valid for stop."); | |
1757 | ||
f2341e0a | 1758 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1759 | |
c6497ccb | 1760 | type = job_type_collapse(type, unit); |
e0209d83 | 1761 | |
23ade460 | 1762 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1763 | if (!tr) |
1764 | return -ENOMEM; | |
11dd41ce | 1765 | |
4bd29fe5 | 1766 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
3742095b | 1767 | IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS), |
50cbaba4 | 1768 | mode == JOB_IGNORE_DEPENDENCIES, error); |
7527cb52 MS |
1769 | if (r < 0) |
1770 | goto tr_abort; | |
c497c7a9 | 1771 | |
7527cb52 MS |
1772 | if (mode == JOB_ISOLATE) { |
1773 | r = transaction_add_isolate_jobs(tr, m); | |
1774 | if (r < 0) | |
1775 | goto tr_abort; | |
1776 | } | |
1777 | ||
1f0f9f21 KK |
1778 | if (mode == JOB_TRIGGERING) { |
1779 | r = transaction_add_triggering_jobs(tr, unit); | |
1780 | if (r < 0) | |
1781 | goto tr_abort; | |
1782 | } | |
1783 | ||
50cbaba4 | 1784 | r = transaction_activate(tr, m, mode, affected_jobs, error); |
7527cb52 MS |
1785 | if (r < 0) |
1786 | goto tr_abort; | |
e5b5ae50 | 1787 | |
f2341e0a | 1788 | log_unit_debug(unit, |
66870f90 ZJS |
1789 | "Enqueued job %s/%s as %u", unit->id, |
1790 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1791 | |
50cbaba4 LP |
1792 | if (ret) |
1793 | *ret = tr->anchor_job; | |
60918275 | 1794 | |
7527cb52 | 1795 | transaction_free(tr); |
e5b5ae50 | 1796 | return 0; |
7527cb52 MS |
1797 | |
1798 | tr_abort: | |
1799 | transaction_abort(tr); | |
1800 | transaction_free(tr); | |
1801 | return r; | |
e5b5ae50 | 1802 | } |
60918275 | 1803 | |
50cbaba4 | 1804 | 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 | 1805 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1806 | int r; |
1807 | ||
1808 | assert(m); | |
1809 | assert(type < _JOB_TYPE_MAX); | |
1810 | assert(name); | |
1811 | assert(mode < _JOB_MODE_MAX); | |
1812 | ||
c3090674 LP |
1813 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1814 | if (r < 0) | |
28247076 | 1815 | return r; |
4440b27d | 1816 | assert(unit); |
28247076 | 1817 | |
50cbaba4 | 1818 | return manager_add_job(m, type, unit, mode, affected_jobs, e, ret); |
53f18416 LP |
1819 | } |
1820 | ||
50cbaba4 | 1821 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Set *affected_jobs, Job **ret) { |
4afd3348 | 1822 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1823 | int r; |
1824 | ||
1825 | assert(m); | |
1826 | assert(type < _JOB_TYPE_MAX); | |
1827 | assert(name); | |
1828 | assert(mode < _JOB_MODE_MAX); | |
1829 | ||
50cbaba4 | 1830 | r = manager_add_job_by_name(m, type, name, mode, affected_jobs, &error, ret); |
53f18416 LP |
1831 | if (r < 0) |
1832 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1833 | ||
1834 | return r; | |
28247076 LP |
1835 | } |
1836 | ||
15d167f8 JW |
1837 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1838 | int r; | |
1839 | Transaction *tr; | |
1840 | ||
1841 | assert(m); | |
1842 | assert(unit); | |
1843 | assert(mode < _JOB_MODE_MAX); | |
1844 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1845 | ||
1846 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1847 | if (!tr) | |
1848 | return -ENOMEM; | |
1849 | ||
1850 | /* We need an anchor job */ | |
1851 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1852 | if (r < 0) | |
1853 | goto tr_abort; | |
1854 | ||
1855 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1856 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1857 | ||
50cbaba4 | 1858 | r = transaction_activate(tr, m, mode, NULL, e); |
15d167f8 JW |
1859 | if (r < 0) |
1860 | goto tr_abort; | |
1861 | ||
1862 | transaction_free(tr); | |
1863 | return 0; | |
1864 | ||
1865 | tr_abort: | |
1866 | transaction_abort(tr); | |
1867 | transaction_free(tr); | |
1868 | return r; | |
1869 | } | |
1870 | ||
60918275 LP |
1871 | Job *manager_get_job(Manager *m, uint32_t id) { |
1872 | assert(m); | |
1873 | ||
1874 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1875 | } | |
1876 | ||
87f0e418 | 1877 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1878 | assert(m); |
1879 | assert(name); | |
1880 | ||
87f0e418 | 1881 | return hashmap_get(m->units, name); |
60918275 LP |
1882 | } |
1883 | ||
19496554 MS |
1884 | static int manager_dispatch_target_deps_queue(Manager *m) { |
1885 | Unit *u; | |
19496554 MS |
1886 | int r = 0; |
1887 | ||
1888 | static const UnitDependency deps[] = { | |
1889 | UNIT_REQUIRED_BY, | |
1890 | UNIT_REQUISITE_OF, | |
1891 | UNIT_WANTED_BY, | |
1892 | UNIT_BOUND_BY | |
1893 | }; | |
1894 | ||
1895 | assert(m); | |
1896 | ||
1897 | while ((u = m->target_deps_queue)) { | |
1898 | assert(u->in_target_deps_queue); | |
1899 | ||
1900 | LIST_REMOVE(target_deps_queue, u->manager->target_deps_queue, u); | |
1901 | u->in_target_deps_queue = false; | |
1902 | ||
5b10116e | 1903 | for (size_t k = 0; k < ELEMENTSOF(deps); k++) { |
19496554 MS |
1904 | Unit *target; |
1905 | Iterator i; | |
1906 | void *v; | |
1907 | ||
1908 | HASHMAP_FOREACH_KEY(v, target, u->dependencies[deps[k]], i) { | |
1909 | r = unit_add_default_target_dependency(u, target); | |
1910 | if (r < 0) | |
1911 | return r; | |
1912 | } | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | return r; | |
1917 | } | |
1918 | ||
c1e1601e | 1919 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1920 | Unit *u; |
c1e1601e | 1921 | unsigned n = 0; |
60918275 LP |
1922 | |
1923 | assert(m); | |
1924 | ||
223dabab LP |
1925 | /* Make sure we are not run recursively */ |
1926 | if (m->dispatching_load_queue) | |
c1e1601e | 1927 | return 0; |
223dabab LP |
1928 | |
1929 | m->dispatching_load_queue = true; | |
1930 | ||
87f0e418 | 1931 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1932 | * tries to load its data until the queue is empty */ |
1933 | ||
595ed347 MS |
1934 | while ((u = m->load_queue)) { |
1935 | assert(u->in_load_queue); | |
034c6ed7 | 1936 | |
595ed347 | 1937 | unit_load(u); |
c1e1601e | 1938 | n++; |
60918275 LP |
1939 | } |
1940 | ||
223dabab | 1941 | m->dispatching_load_queue = false; |
19496554 MS |
1942 | |
1943 | /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about | |
1944 | * should be loaded and have aliases resolved */ | |
1945 | (void) manager_dispatch_target_deps_queue(m); | |
1946 | ||
c1e1601e | 1947 | return n; |
60918275 LP |
1948 | } |
1949 | ||
81be2388 | 1950 | bool manager_unit_cache_should_retry_load(Unit *u) { |
cda66772 LB |
1951 | assert(u); |
1952 | ||
81be2388 ZJS |
1953 | /* Automatic reloading from disk only applies to units which were not found sometime in the past, and |
1954 | * the not-found stub is kept pinned in the unit graph by dependencies. For units that were | |
1955 | * previously loaded, we don't do automatic reloading, and daemon-reload is necessary to update. */ | |
cda66772 LB |
1956 | if (u->load_state != UNIT_NOT_FOUND) |
1957 | return false; | |
1958 | ||
81be2388 ZJS |
1959 | /* The cache has been updated since the last time we tried to load the unit. There might be new |
1960 | * fragment paths to read. */ | |
c2911d48 | 1961 | if (u->manager->unit_cache_timestamp_hash != u->fragment_not_found_timestamp_hash) |
cda66772 | 1962 | return true; |
d904afc7 | 1963 | |
81be2388 | 1964 | /* The cache needs to be updated because there are modifications on disk. */ |
c2911d48 | 1965 | return !lookup_paths_timestamp_hash_same(&u->manager->lookup_paths, u->manager->unit_cache_timestamp_hash, NULL); |
d904afc7 LB |
1966 | } |
1967 | ||
c2756a68 LP |
1968 | int manager_load_unit_prepare( |
1969 | Manager *m, | |
1970 | const char *name, | |
1971 | const char *path, | |
718db961 | 1972 | sd_bus_error *e, |
c2756a68 LP |
1973 | Unit **_ret) { |
1974 | ||
dc409696 | 1975 | _cleanup_(unit_freep) Unit *cleanup_ret = NULL; |
87f0e418 | 1976 | Unit *ret; |
7d17cfbc | 1977 | UnitType t; |
60918275 LP |
1978 | int r; |
1979 | ||
1980 | assert(m); | |
7a6a095a | 1981 | assert(_ret); |
60918275 | 1982 | |
db06e3b6 LP |
1983 | /* This will prepare the unit for loading, but not actually |
1984 | * load anything from disk. */ | |
0301abf4 | 1985 | |
718db961 LP |
1986 | if (path && !is_path(path)) |
1987 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 | 1988 | |
08f46856 BR |
1989 | if (!name) { |
1990 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
1991 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
1992 | * but this cannot be possible in any code path (See #6119). */ | |
1993 | assert_se(path); | |
2b6bf07d | 1994 | name = basename(path); |
08f46856 | 1995 | } |
9e2f7c11 | 1996 | |
7d17cfbc MS |
1997 | t = unit_name_to_type(name); |
1998 | ||
5d512d54 LN |
1999 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
2000 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
2001 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
2002 | ||
718db961 | 2003 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 2004 | } |
60918275 | 2005 | |
7d17cfbc MS |
2006 | ret = manager_get_unit(m, name); |
2007 | if (ret) { | |
d904afc7 LB |
2008 | /* The time-based cache allows to start new units without daemon-reload, |
2009 | * but if they are already referenced (because of dependencies or ordering) | |
2010 | * then we have to force a load of the fragment. As an optimization, check | |
2011 | * first if anything in the usual paths was modified since the last time | |
7233e91a LB |
2012 | * the cache was loaded. Also check if the last time an attempt to load the |
2013 | * unit was made was before the most recent cache refresh, so that we know | |
81be2388 | 2014 | * we need to try again — even if the cache is current, it might have been |
7233e91a LB |
2015 | * updated in a different context before we had a chance to retry loading |
2016 | * this particular unit. */ | |
81be2388 | 2017 | if (manager_unit_cache_should_retry_load(ret)) |
d904afc7 LB |
2018 | ret->load_state = UNIT_STUB; |
2019 | else { | |
2020 | *_ret = ret; | |
2021 | return 1; | |
2022 | } | |
2023 | } else { | |
2024 | ret = cleanup_ret = unit_new(m, unit_vtable[t]->object_size); | |
2025 | if (!ret) | |
2026 | return -ENOMEM; | |
034c6ed7 | 2027 | } |
60918275 | 2028 | |
7d17cfbc | 2029 | if (path) { |
d904afc7 LB |
2030 | r = free_and_strdup(&ret->fragment_path, path); |
2031 | if (r < 0) | |
2032 | return r; | |
7d17cfbc | 2033 | } |
0301abf4 | 2034 | |
1058cbf2 | 2035 | r = unit_add_name(ret, name); |
dc409696 | 2036 | if (r < 0) |
1ffba6fe | 2037 | return r; |
60918275 | 2038 | |
87f0e418 | 2039 | unit_add_to_load_queue(ret); |
c1e1601e | 2040 | unit_add_to_dbus_queue(ret); |
949061f0 | 2041 | unit_add_to_gc_queue(ret); |
c1e1601e | 2042 | |
7a6a095a | 2043 | *_ret = ret; |
dc409696 | 2044 | cleanup_ret = NULL; |
db06e3b6 LP |
2045 | |
2046 | return 0; | |
2047 | } | |
2048 | ||
c2756a68 LP |
2049 | int manager_load_unit( |
2050 | Manager *m, | |
2051 | const char *name, | |
2052 | const char *path, | |
718db961 | 2053 | sd_bus_error *e, |
c2756a68 LP |
2054 | Unit **_ret) { |
2055 | ||
db06e3b6 LP |
2056 | int r; |
2057 | ||
2058 | assert(m); | |
7a6a095a | 2059 | assert(_ret); |
db06e3b6 LP |
2060 | |
2061 | /* This will load the service information files, but not actually | |
2062 | * start any services or anything. */ | |
2063 | ||
c3090674 LP |
2064 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
2065 | if (r != 0) | |
db06e3b6 LP |
2066 | return r; |
2067 | ||
f50e0a01 | 2068 | manager_dispatch_load_queue(m); |
60918275 | 2069 | |
7a6a095a | 2070 | *_ret = unit_follow_merge(*_ret); |
4109ede7 ZJS |
2071 | return 0; |
2072 | } | |
2073 | ||
2074 | int manager_load_startable_unit_or_warn( | |
2075 | Manager *m, | |
2076 | const char *name, | |
2077 | const char *path, | |
2078 | Unit **ret) { | |
2079 | ||
2080 | /* Load a unit, make sure it loaded fully and is not masked. */ | |
2081 | ||
2082 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2083 | Unit *unit; | |
2084 | int r; | |
2085 | ||
2086 | r = manager_load_unit(m, name, path, &error, &unit); | |
2087 | if (r < 0) | |
2088 | return log_error_errno(r, "Failed to load %s %s: %s", | |
8ace1db7 | 2089 | name ? "unit" : "unit file", name ?: path, |
4109ede7 | 2090 | bus_error_message(&error, r)); |
8ace1db7 LP |
2091 | |
2092 | r = bus_unit_validate_load_state(unit, &error); | |
2093 | if (r < 0) | |
2094 | return log_error_errno(r, "%s", bus_error_message(&error, r)); | |
9e2f7c11 | 2095 | |
4109ede7 | 2096 | *ret = unit; |
60918275 LP |
2097 | return 0; |
2098 | } | |
a66d02c3 | 2099 | |
cea8e32e | 2100 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 2101 | Iterator i; |
a66d02c3 LP |
2102 | Job *j; |
2103 | ||
2104 | assert(s); | |
2105 | assert(f); | |
2106 | ||
034c6ed7 | 2107 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 2108 | job_dump(j, f, prefix); |
a66d02c3 LP |
2109 | } |
2110 | ||
87f0e418 | 2111 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 2112 | Iterator i; |
87f0e418 | 2113 | Unit *u; |
11dd41ce | 2114 | const char *t; |
a66d02c3 LP |
2115 | |
2116 | assert(s); | |
2117 | assert(f); | |
2118 | ||
87f0e418 | 2119 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 2120 | if (u->id == t) |
87f0e418 | 2121 | unit_dump(u, f, prefix); |
a66d02c3 | 2122 | } |
7fad411c | 2123 | |
ad75b9e7 | 2124 | void manager_dump(Manager *m, FILE *f, const char *prefix) { |
ad75b9e7 LP |
2125 | assert(m); |
2126 | assert(f); | |
2127 | ||
5b10116e | 2128 | for (ManagerTimestamp q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { |
34541295 ZJS |
2129 | const dual_timestamp *t = m->timestamps + q; |
2130 | char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_TIMESTAMP_MAX)]; | |
ad75b9e7 | 2131 | |
34541295 | 2132 | if (dual_timestamp_is_set(t)) |
ad75b9e7 LP |
2133 | fprintf(f, "%sTimestamp %s: %s\n", |
2134 | strempty(prefix), | |
2135 | manager_timestamp_to_string(q), | |
34541295 ZJS |
2136 | timestamp_is_set(t->realtime) ? format_timestamp(buf, sizeof buf, t->realtime) : |
2137 | format_timespan(buf, sizeof buf, t->monotonic, 1)); | |
ad75b9e7 LP |
2138 | } |
2139 | ||
2140 | manager_dump_units(m, f, prefix); | |
2141 | manager_dump_jobs(m, f, prefix); | |
2142 | } | |
2143 | ||
713f6f90 LP |
2144 | int manager_get_dump_string(Manager *m, char **ret) { |
2145 | _cleanup_free_ char *dump = NULL; | |
2146 | _cleanup_fclose_ FILE *f = NULL; | |
2147 | size_t size; | |
2148 | int r; | |
2149 | ||
2150 | assert(m); | |
2151 | assert(ret); | |
2152 | ||
2fe21124 | 2153 | f = open_memstream_unlocked(&dump, &size); |
713f6f90 LP |
2154 | if (!f) |
2155 | return -errno; | |
2156 | ||
713f6f90 LP |
2157 | manager_dump(m, f, NULL); |
2158 | ||
2159 | r = fflush_and_check(f); | |
2160 | if (r < 0) | |
2161 | return r; | |
2162 | ||
2163 | f = safe_fclose(f); | |
2164 | ||
1cc6c93a | 2165 | *ret = TAKE_PTR(dump); |
713f6f90 LP |
2166 | |
2167 | return 0; | |
2168 | } | |
2169 | ||
7fad411c LP |
2170 | void manager_clear_jobs(Manager *m) { |
2171 | Job *j; | |
2172 | ||
2173 | assert(m); | |
2174 | ||
7fad411c | 2175 | while ((j = hashmap_first(m->jobs))) |
5273510e | 2176 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 2177 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 2178 | } |
83c60c9f | 2179 | |
f75f613d FB |
2180 | void manager_unwatch_pid(Manager *m, pid_t pid) { |
2181 | assert(m); | |
2182 | ||
2183 | /* First let's drop the unit keyed as "pid". */ | |
2184 | (void) hashmap_remove(m->watch_pids, PID_TO_PTR(pid)); | |
2185 | ||
2186 | /* Then, let's also drop the array keyed by -pid. */ | |
2187 | free(hashmap_remove(m->watch_pids, PID_TO_PTR(-pid))); | |
2188 | } | |
2189 | ||
752b5905 LP |
2190 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
2191 | Manager *m = userdata; | |
83c60c9f | 2192 | Job *j; |
034c6ed7 | 2193 | |
752b5905 LP |
2194 | assert(source); |
2195 | assert(m); | |
9152c765 | 2196 | |
da8e1782 | 2197 | while ((j = prioq_peek(m->run_queue))) { |
ac1135be | 2198 | assert(j->installed); |
034c6ed7 LP |
2199 | assert(j->in_run_queue); |
2200 | ||
6e64994d | 2201 | (void) job_run_and_invalidate(j); |
9152c765 | 2202 | } |
034c6ed7 | 2203 | |
a0b64226 | 2204 | if (m->n_running_jobs > 0) |
03b717a3 MS |
2205 | manager_watch_jobs_in_progress(m); |
2206 | ||
31a7eb86 ZJS |
2207 | if (m->n_on_console > 0) |
2208 | manager_watch_idle_pipe(m); | |
2209 | ||
752b5905 | 2210 | return 1; |
c1e1601e LP |
2211 | } |
2212 | ||
9588bc32 | 2213 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
e0a08581 | 2214 | unsigned n = 0, budget; |
595ed347 | 2215 | Unit *u; |
e0a08581 | 2216 | Job *j; |
c1e1601e LP |
2217 | |
2218 | assert(m); | |
2219 | ||
b8d381c4 LP |
2220 | /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly |
2221 | * as we can. There's no point in throttling generation of signals in that case. */ | |
2222 | if (MANAGER_IS_RELOADING(m) || m->send_reloading_done || m->pending_reload_message) | |
2223 | budget = (unsigned) -1; /* infinite budget in this case */ | |
2224 | else { | |
2225 | /* Anything to do at all? */ | |
2226 | if (!m->dbus_unit_queue && !m->dbus_job_queue) | |
2227 | return 0; | |
2228 | ||
2229 | /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's | |
2230 | * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */ | |
2231 | if (manager_bus_n_queued_write(m) > MANAGER_BUS_BUSY_THRESHOLD) | |
2232 | return 0; | |
2233 | ||
2234 | /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't | |
2235 | * overly full before this call we shouldn't increase it in size too wildly in one step, and we | |
2236 | * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of | |
2237 | * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message, | |
5238e957 BB |
2238 | * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to |
2239 | * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct | |
b8d381c4 LP |
2240 | * connections it will be counted five times. This difference in counting ("references" |
2241 | * vs. "instances") is primarily a result of the fact that it's easier to implement it this way, | |
2242 | * however it also reflects the thinking that the "threshold" should put a limit on used queue memory, | |
2243 | * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is | |
2244 | * currently chosen much higher than the "budget". */ | |
2245 | budget = MANAGER_BUS_MESSAGE_BUDGET; | |
2246 | } | |
e0a08581 | 2247 | |
b8d381c4 | 2248 | while (budget != 0 && (u = m->dbus_unit_queue)) { |
e0a08581 | 2249 | |
595ed347 | 2250 | assert(u->in_dbus_queue); |
c1e1601e | 2251 | |
595ed347 | 2252 | bus_unit_send_change_signal(u); |
b8d381c4 LP |
2253 | n++; |
2254 | ||
2255 | if (budget != (unsigned) -1) | |
2256 | budget--; | |
c1e1601e LP |
2257 | } |
2258 | ||
b8d381c4 | 2259 | while (budget != 0 && (j = m->dbus_job_queue)) { |
c1e1601e LP |
2260 | assert(j->in_dbus_queue); |
2261 | ||
2262 | bus_job_send_change_signal(j); | |
b8d381c4 LP |
2263 | n++; |
2264 | ||
2265 | if (budget != (unsigned) -1) | |
2266 | budget--; | |
c1e1601e LP |
2267 | } |
2268 | ||
b8d381c4 | 2269 | if (m->send_reloading_done) { |
71445ae7 | 2270 | m->send_reloading_done = false; |
718db961 | 2271 | bus_manager_send_reloading(m, false); |
b8d381c4 | 2272 | n++; |
71445ae7 LP |
2273 | } |
2274 | ||
b8d381c4 | 2275 | if (m->pending_reload_message) { |
209de525 | 2276 | bus_send_pending_reload_message(m); |
e0a08581 LP |
2277 | n++; |
2278 | } | |
718db961 | 2279 | |
c1e1601e | 2280 | return n; |
9152c765 LP |
2281 | } |
2282 | ||
d8fdc620 LP |
2283 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2284 | Manager *m = userdata; | |
60473f0c | 2285 | char buf[PATH_MAX]; |
d8fdc620 LP |
2286 | ssize_t n; |
2287 | ||
2288 | n = recv(fd, buf, sizeof(buf), 0); | |
2289 | if (n < 0) | |
2290 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
2291 | if (n == 0) { | |
2292 | log_error("Got zero-length cgroups agent message, ignoring."); | |
2293 | return 0; | |
2294 | } | |
2295 | if ((size_t) n >= sizeof(buf)) { | |
2296 | log_error("Got overly long cgroups agent message, ignoring."); | |
2297 | return 0; | |
2298 | } | |
2299 | ||
2300 | if (memchr(buf, 0, n)) { | |
2301 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
2302 | return 0; | |
2303 | } | |
2304 | buf[n] = 0; | |
2305 | ||
2306 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 2307 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
2308 | |
2309 | return 0; | |
2310 | } | |
2311 | ||
5151b4cc | 2312 | static bool manager_process_barrier_fd(char * const *tags, FDSet *fds) { |
4f07ddfa KKD |
2313 | |
2314 | /* nothing else must be sent when using BARRIER=1 */ | |
5151b4cc BR |
2315 | if (strv_contains(tags, "BARRIER=1")) { |
2316 | if (strv_length(tags) == 1) { | |
2317 | if (fdset_size(fds) != 1) | |
2318 | log_warning("Got incorrect number of fds with BARRIER=1, closing them."); | |
2319 | } else | |
2320 | log_warning("Extra notification messages sent with BARRIER=1, ignoring everything."); | |
2321 | ||
2322 | /* Drop the message if BARRIER=1 was found */ | |
4f07ddfa | 2323 | return true; |
5151b4cc | 2324 | } |
4f07ddfa KKD |
2325 | |
2326 | return false; | |
2327 | } | |
2328 | ||
db256aab LP |
2329 | static void manager_invoke_notify_message( |
2330 | Manager *m, | |
2331 | Unit *u, | |
2332 | const struct ucred *ucred, | |
5151b4cc | 2333 | char * const *tags, |
db256aab LP |
2334 | FDSet *fds) { |
2335 | ||
5ba6985b LP |
2336 | assert(m); |
2337 | assert(u); | |
db256aab | 2338 | assert(ucred); |
5151b4cc | 2339 | assert(tags); |
5ba6985b | 2340 | |
62a76913 | 2341 | if (u->notifygen == m->notifygen) /* Already invoked on this same unit in this same iteration? */ |
5ba6985b | 2342 | return; |
62a76913 LP |
2343 | u->notifygen = m->notifygen; |
2344 | ||
5151b4cc | 2345 | if (UNIT_VTABLE(u)->notify_message) |
db256aab | 2346 | UNIT_VTABLE(u)->notify_message(u, ucred, tags, fds); |
62a76913 | 2347 | |
5151b4cc BR |
2348 | else if (DEBUG_LOGGING) { |
2349 | _cleanup_free_ char *buf = NULL, *x = NULL, *y = NULL; | |
a86b7675 | 2350 | |
5151b4cc BR |
2351 | buf = strv_join(tags, ", "); |
2352 | if (buf) | |
2353 | x = ellipsize(buf, 20, 90); | |
a86b7675 | 2354 | if (x) |
da5fb861 LP |
2355 | y = cescape(x); |
2356 | ||
a86b7675 ZJS |
2357 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); |
2358 | } | |
5ba6985b LP |
2359 | } |
2360 | ||
718db961 | 2361 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 2362 | |
b215b0ed | 2363 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 2364 | Manager *m = userdata; |
b215b0ed DH |
2365 | char buf[NOTIFY_BUFFER_MAX+1]; |
2366 | struct iovec iovec = { | |
2367 | .iov_base = buf, | |
2368 | .iov_len = sizeof(buf)-1, | |
2369 | }; | |
fb29cdbe LP |
2370 | CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred)) + |
2371 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)) control; | |
b215b0ed DH |
2372 | struct msghdr msghdr = { |
2373 | .msg_iov = &iovec, | |
2374 | .msg_iovlen = 1, | |
2375 | .msg_control = &control, | |
2376 | .msg_controllen = sizeof(control), | |
2377 | }; | |
2378 | ||
2379 | struct cmsghdr *cmsg; | |
2380 | struct ucred *ucred = NULL; | |
62a76913 | 2381 | _cleanup_free_ Unit **array_copy = NULL; |
5151b4cc | 2382 | _cleanup_strv_free_ char **tags = NULL; |
62a76913 | 2383 | Unit *u1, *u2, **array; |
b215b0ed | 2384 | int r, *fd_array = NULL; |
da6053d0 | 2385 | size_t n_fds = 0; |
62a76913 | 2386 | bool found = false; |
8c47c732 LP |
2387 | ssize_t n; |
2388 | ||
2389 | assert(m); | |
718db961 LP |
2390 | assert(m->notify_fd == fd); |
2391 | ||
2392 | if (revents != EPOLLIN) { | |
2393 | log_warning("Got unexpected poll event for notify fd."); | |
2394 | return 0; | |
2395 | } | |
8c47c732 | 2396 | |
3691bcf3 LP |
2397 | n = recvmsg_safe(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
2398 | if (IN_SET(n, -EAGAIN, -EINTR)) | |
2399 | return 0; /* Spurious wakeup, try again */ | |
2400 | if (n < 0) | |
2401 | /* If this is any other, real error, then let's stop processing this socket. This of course | |
2402 | * means we won't take notification messages anymore, but that's still better than busy | |
2403 | * looping around this: being woken up over and over again but being unable to actually read | |
2404 | * the message off the socket. */ | |
2405 | return log_error_errno(n, "Failed to receive notification message: %m"); | |
a354329f | 2406 | |
b215b0ed DH |
2407 | CMSG_FOREACH(cmsg, &msghdr) { |
2408 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 2409 | |
3691bcf3 | 2410 | assert(!fd_array); |
b215b0ed DH |
2411 | fd_array = (int*) CMSG_DATA(cmsg); |
2412 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 2413 | |
b215b0ed DH |
2414 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
2415 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
2416 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 2417 | |
3691bcf3 | 2418 | assert(!ucred); |
b215b0ed | 2419 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 2420 | } |
b215b0ed | 2421 | } |
a354329f | 2422 | |
b215b0ed DH |
2423 | if (n_fds > 0) { |
2424 | assert(fd_array); | |
a354329f | 2425 | |
b215b0ed DH |
2426 | r = fdset_new_array(&fds, fd_array, n_fds); |
2427 | if (r < 0) { | |
2428 | close_many(fd_array, n_fds); | |
9987750e FB |
2429 | log_oom(); |
2430 | return 0; | |
a354329f | 2431 | } |
b215b0ed | 2432 | } |
8c47c732 | 2433 | |
15e23e8c | 2434 | if (!ucred || !pid_is_valid(ucred->pid)) { |
b215b0ed DH |
2435 | log_warning("Received notify message without valid credentials. Ignoring."); |
2436 | return 0; | |
2437 | } | |
8c47c732 | 2438 | |
045a3d59 | 2439 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
2440 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
2441 | return 0; | |
2442 | } | |
8c47c732 | 2443 | |
875ca88d LP |
2444 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
2445 | * trailing NUL byte in the message, but don't expect it. */ | |
2446 | if (n > 1 && memchr(buf, 0, n-1)) { | |
2447 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
2448 | return 0; | |
2449 | } | |
2450 | ||
5151b4cc | 2451 | /* Make sure it's NUL-terminated, then parse it to obtain the tags list */ |
b215b0ed | 2452 | buf[n] = 0; |
5151b4cc BR |
2453 | tags = strv_split_newlines(buf); |
2454 | if (!tags) { | |
2455 | log_oom(); | |
2456 | return 0; | |
2457 | } | |
8c47c732 | 2458 | |
4f07ddfa | 2459 | /* possibly a barrier fd, let's see */ |
5151b4cc | 2460 | if (manager_process_barrier_fd(tags, fds)) |
4f07ddfa KKD |
2461 | return 0; |
2462 | ||
62a76913 LP |
2463 | /* Increase the generation counter used for filtering out duplicate unit invocations. */ |
2464 | m->notifygen++; | |
2465 | ||
2466 | /* Notify every unit that might be interested, which might be multiple. */ | |
b215b0ed | 2467 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); |
62a76913 LP |
2468 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(ucred->pid)); |
2469 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-ucred->pid)); | |
2470 | if (array) { | |
2471 | size_t k = 0; | |
5ba6985b | 2472 | |
62a76913 LP |
2473 | while (array[k]) |
2474 | k++; | |
5ba6985b | 2475 | |
62a76913 LP |
2476 | array_copy = newdup(Unit*, array, k+1); |
2477 | if (!array_copy) | |
2478 | log_oom(); | |
2479 | } | |
2480 | /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units | |
2481 | * make sure we only invoke each unit's handler once. */ | |
2482 | if (u1) { | |
5151b4cc | 2483 | manager_invoke_notify_message(m, u1, ucred, tags, fds); |
62a76913 LP |
2484 | found = true; |
2485 | } | |
2486 | if (u2) { | |
5151b4cc | 2487 | manager_invoke_notify_message(m, u2, ucred, tags, fds); |
62a76913 LP |
2488 | found = true; |
2489 | } | |
2490 | if (array_copy) | |
2491 | for (size_t i = 0; array_copy[i]; i++) { | |
5151b4cc | 2492 | manager_invoke_notify_message(m, array_copy[i], ucred, tags, fds); |
62a76913 LP |
2493 | found = true; |
2494 | } | |
8c47c732 | 2495 | |
62a76913 LP |
2496 | if (!found) |
2497 | log_warning("Cannot find unit for notify message of PID "PID_FMT", ignoring.", ucred->pid); | |
a354329f | 2498 | |
b215b0ed | 2499 | if (fdset_size(fds) > 0) |
5fd2c135 | 2500 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2501 | |
2502 | return 0; | |
2503 | } | |
2504 | ||
62a76913 LP |
2505 | static void manager_invoke_sigchld_event( |
2506 | Manager *m, | |
2507 | Unit *u, | |
2508 | const siginfo_t *si) { | |
36f20ae3 | 2509 | |
5ba6985b LP |
2510 | assert(m); |
2511 | assert(u); | |
2512 | assert(si); | |
2513 | ||
62a76913 LP |
2514 | /* Already invoked the handler of this unit in this iteration? Then don't process this again */ |
2515 | if (u->sigchldgen == m->sigchldgen) | |
2516 | return; | |
2517 | u->sigchldgen = m->sigchldgen; | |
5ba6985b | 2518 | |
62a76913 | 2519 | log_unit_debug(u, "Child "PID_FMT" belongs to %s.", si->si_pid, u->id); |
5ba6985b | 2520 | unit_unwatch_pid(u, si->si_pid); |
e57051f5 | 2521 | |
62a76913 LP |
2522 | if (UNIT_VTABLE(u)->sigchld_event) |
2523 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
5ba6985b LP |
2524 | } |
2525 | ||
575b300b LP |
2526 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata) { |
2527 | Manager *m = userdata; | |
2528 | siginfo_t si = {}; | |
2529 | int r; | |
2530 | ||
2531 | assert(source); | |
9152c765 LP |
2532 | assert(m); |
2533 | ||
0a51b45c | 2534 | /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it |
575b300b | 2535 | * while it is a zombie. */ |
9152c765 | 2536 | |
575b300b | 2537 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { |
acbb0225 | 2538 | |
8afabc50 AJ |
2539 | if (errno != ECHILD) |
2540 | log_error_errno(errno, "Failed to peek for child with waitid(), ignoring: %m"); | |
acbb0225 | 2541 | |
8afabc50 | 2542 | goto turn_off; |
575b300b | 2543 | } |
4112df16 | 2544 | |
575b300b LP |
2545 | if (si.si_pid <= 0) |
2546 | goto turn_off; | |
2547 | ||
2548 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { | |
62a76913 | 2549 | _cleanup_free_ Unit **array_copy = NULL; |
575b300b | 2550 | _cleanup_free_ char *name = NULL; |
62a76913 | 2551 | Unit *u1, *u2, **array; |
575b300b LP |
2552 | |
2553 | (void) get_process_comm(si.si_pid, &name); | |
2554 | ||
2555 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
2556 | si.si_pid, strna(name), | |
2557 | sigchld_code_to_string(si.si_code), | |
2558 | si.si_status, | |
2559 | strna(si.si_code == CLD_EXITED | |
2560 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2561 | : signal_to_string(si.si_status))); | |
2562 | ||
62a76913 LP |
2563 | /* Increase the generation counter used for filtering out duplicate unit invocations */ |
2564 | m->sigchldgen++; | |
2565 | ||
2566 | /* And now figure out the unit this belongs to, it might be multiple... */ | |
575b300b | 2567 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
62a76913 LP |
2568 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(si.si_pid)); |
2569 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-si.si_pid)); | |
2570 | if (array) { | |
2571 | size_t n = 0; | |
2572 | ||
5238e957 | 2573 | /* Count how many entries the array has */ |
62a76913 LP |
2574 | while (array[n]) |
2575 | n++; | |
2576 | ||
2577 | /* Make a copy of the array so that we don't trip up on the array changing beneath us */ | |
2578 | array_copy = newdup(Unit*, array, n+1); | |
2579 | if (!array_copy) | |
2580 | log_oom(); | |
2581 | } | |
2582 | ||
2583 | /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but | |
2584 | * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for | |
2585 | * each iteration. */ | |
2ba6ae6b ZJS |
2586 | if (u1) { |
2587 | /* We check for oom condition, in case we got SIGCHLD before the oom notification. | |
2588 | * We only do this for the cgroup the PID belonged to. */ | |
2589 | (void) unit_check_oom(u1); | |
2590 | ||
62a76913 | 2591 | manager_invoke_sigchld_event(m, u1, &si); |
2ba6ae6b | 2592 | } |
62a76913 LP |
2593 | if (u2) |
2594 | manager_invoke_sigchld_event(m, u2, &si); | |
2595 | if (array_copy) | |
2596 | for (size_t i = 0; array_copy[i]; i++) | |
2597 | manager_invoke_sigchld_event(m, array_copy[i], &si); | |
575b300b | 2598 | } |
9152c765 | 2599 | |
575b300b LP |
2600 | /* And now, we actually reap the zombie. */ |
2601 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2602 | log_error_errno(errno, "Failed to dequeue child, ignoring: %m"); | |
2603 | return 0; | |
2604 | } | |
9152c765 | 2605 | |
575b300b | 2606 | return 0; |
8c47c732 | 2607 | |
575b300b LP |
2608 | turn_off: |
2609 | /* All children processed for now, turn off event source */ | |
4112df16 | 2610 | |
575b300b LP |
2611 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); |
2612 | if (r < 0) | |
2613 | return log_error_errno(r, "Failed to disable SIGCHLD event source: %m"); | |
9152c765 LP |
2614 | |
2615 | return 0; | |
2616 | } | |
2617 | ||
c75fbada | 2618 | static void manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 2619 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 2620 | int r; |
398ef8ba | 2621 | |
f2341e0a | 2622 | log_debug("Activating special unit %s", name); |
1e001f52 | 2623 | |
50cbaba4 | 2624 | r = manager_add_job_by_name(m, JOB_START, name, mode, NULL, &error, NULL); |
bd0af849 | 2625 | if (r < 0) |
f2341e0a | 2626 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
28247076 LP |
2627 | } |
2628 | ||
24dd31c1 LN |
2629 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2630 | /* If the user presses C-A-D more than | |
2631 | * 7 times within 2s, we reboot/shutdown immediately, | |
2632 | * unless it was disabled in system.conf */ | |
2633 | ||
7994ac1d | 2634 | if (ratelimit_below(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 2635 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 | 2636 | else |
7af67e9a | 2637 | emergency_action(m, m->cad_burst_action, EMERGENCY_ACTION_WARN, NULL, -1, |
ae8c7939 | 2638 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); |
24dd31c1 LN |
2639 | } |
2640 | ||
718db961 LP |
2641 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2642 | Manager *m = userdata; | |
9152c765 LP |
2643 | ssize_t n; |
2644 | struct signalfd_siginfo sfsi; | |
dacd6cee | 2645 | int r; |
9152c765 LP |
2646 | |
2647 | assert(m); | |
718db961 LP |
2648 | assert(m->signal_fd == fd); |
2649 | ||
2650 | if (revents != EPOLLIN) { | |
2651 | log_warning("Got unexpected events from signal file descriptor."); | |
2652 | return 0; | |
2653 | } | |
9152c765 | 2654 | |
575b300b LP |
2655 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
2656 | if (n != sizeof(sfsi)) { | |
2657 | if (n >= 0) { | |
2658 | log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n); | |
2659 | return 0; | |
2660 | } | |
9152c765 | 2661 | |
575b300b LP |
2662 | if (IN_SET(errno, EINTR, EAGAIN)) |
2663 | return 0; | |
9152c765 | 2664 | |
575b300b LP |
2665 | /* We return an error here, which will kill this handler, |
2666 | * to avoid a busy loop on read error. */ | |
2667 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
2668 | } | |
9152c765 | 2669 | |
575b300b LP |
2670 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
2671 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) | |
2672 | ? LOG_DEBUG : LOG_INFO, | |
2673 | &sfsi); | |
1e001f52 | 2674 | |
575b300b | 2675 | switch (sfsi.ssi_signo) { |
b9cd2ec1 | 2676 | |
575b300b LP |
2677 | case SIGCHLD: |
2678 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
2679 | if (r < 0) | |
8afabc50 | 2680 | log_warning_errno(r, "Failed to enable SIGCHLD event source, ignoring: %m"); |
b9cd2ec1 | 2681 | |
575b300b | 2682 | break; |
84e9af1e | 2683 | |
575b300b LP |
2684 | case SIGTERM: |
2685 | if (MANAGER_IS_SYSTEM(m)) { | |
ba0c7754 | 2686 | /* This is for compatibility with the original sysvinit */ |
c52b19d6 LP |
2687 | if (verify_run_space_and_log("Refusing to reexecute") < 0) |
2688 | break; | |
2689 | ||
2690 | m->objective = MANAGER_REEXECUTE; | |
a1b256b0 | 2691 | break; |
575b300b | 2692 | } |
84e9af1e | 2693 | |
575b300b LP |
2694 | _fallthrough_; |
2695 | case SIGINT: | |
2696 | if (MANAGER_IS_SYSTEM(m)) | |
2697 | manager_handle_ctrl_alt_del(m); | |
2698 | else | |
2699 | manager_start_target(m, SPECIAL_EXIT_TARGET, | |
2700 | JOB_REPLACE_IRREVERSIBLY); | |
2701 | break; | |
84e9af1e | 2702 | |
575b300b | 2703 | case SIGWINCH: |
ba0c7754 | 2704 | /* This is a nop on non-init */ |
575b300b LP |
2705 | if (MANAGER_IS_SYSTEM(m)) |
2706 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); | |
84e9af1e | 2707 | |
575b300b | 2708 | break; |
84e9af1e | 2709 | |
575b300b | 2710 | case SIGPWR: |
ba0c7754 | 2711 | /* This is a nop on non-init */ |
575b300b LP |
2712 | if (MANAGER_IS_SYSTEM(m)) |
2713 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); | |
6632c602 | 2714 | |
575b300b | 2715 | break; |
57ee42ce | 2716 | |
8559b3b7 | 2717 | case SIGUSR1: |
8559b3b7 | 2718 | if (manager_dbus_is_running(m, false)) { |
575b300b | 2719 | log_info("Trying to reconnect to bus..."); |
575b300b | 2720 | |
8559b3b7 LP |
2721 | (void) bus_init_api(m); |
2722 | ||
2723 | if (MANAGER_IS_SYSTEM(m)) | |
2724 | (void) bus_init_system(m); | |
2725 | } else { | |
2726 | log_info("Starting D-Bus service..."); | |
575b300b LP |
2727 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
2728 | } | |
57ee42ce | 2729 | |
575b300b | 2730 | break; |
575b300b LP |
2731 | |
2732 | case SIGUSR2: { | |
2733 | _cleanup_free_ char *dump = NULL; | |
2734 | ||
2735 | r = manager_get_dump_string(m, &dump); | |
2736 | if (r < 0) { | |
2737 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); | |
57ee42ce LP |
2738 | break; |
2739 | } | |
2740 | ||
575b300b LP |
2741 | log_dump(LOG_INFO, dump); |
2742 | break; | |
2743 | } | |
2149e37c | 2744 | |
575b300b | 2745 | case SIGHUP: |
c52b19d6 LP |
2746 | if (verify_run_space_and_log("Refusing to reload") < 0) |
2747 | break; | |
2748 | ||
2749 | m->objective = MANAGER_RELOAD; | |
575b300b LP |
2750 | break; |
2751 | ||
2752 | default: { | |
2753 | ||
2754 | /* Starting SIGRTMIN+0 */ | |
2755 | static const struct { | |
2756 | const char *target; | |
2757 | JobMode mode; | |
2758 | } target_table[] = { | |
2759 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2760 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2761 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2762 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2763 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2764 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2765 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2766 | }; | |
2767 | ||
2768 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
af41e508 | 2769 | static const ManagerObjective objective_table[] = { |
575b300b LP |
2770 | [0] = MANAGER_HALT, |
2771 | [1] = MANAGER_POWEROFF, | |
2772 | [2] = MANAGER_REBOOT, | |
2773 | [3] = MANAGER_KEXEC, | |
2774 | }; | |
b2cdc666 | 2775 | |
575b300b LP |
2776 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && |
2777 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
2778 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
2779 | manager_start_target(m, target_table[idx].target, | |
2780 | target_table[idx].mode); | |
1005d14f | 2781 | break; |
2149e37c | 2782 | } |
1005d14f | 2783 | |
575b300b | 2784 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
af41e508 LP |
2785 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(objective_table)) { |
2786 | m->objective = objective_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
575b300b LP |
2787 | break; |
2788 | } | |
2789 | ||
2790 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
2791 | ||
2792 | case 20: | |
43bba15a | 2793 | manager_override_show_status(m, SHOW_STATUS_YES, "signal"); |
a16e1123 LP |
2794 | break; |
2795 | ||
575b300b | 2796 | case 21: |
43bba15a | 2797 | manager_override_show_status(m, SHOW_STATUS_NO, "signal"); |
575b300b | 2798 | break; |
7d793605 | 2799 | |
575b300b | 2800 | case 22: |
a6ecbf83 | 2801 | manager_override_log_level(m, LOG_DEBUG); |
575b300b LP |
2802 | break; |
2803 | ||
2804 | case 23: | |
a6ecbf83 | 2805 | manager_restore_original_log_level(m); |
575b300b | 2806 | break; |
0003d1ab | 2807 | |
575b300b LP |
2808 | case 24: |
2809 | if (MANAGER_IS_USER(m)) { | |
af41e508 | 2810 | m->objective = MANAGER_EXIT; |
575b300b | 2811 | return 0; |
0658666b | 2812 | } |
9152c765 | 2813 | |
575b300b LP |
2814 | /* This is a nop on init */ |
2815 | break; | |
2816 | ||
2817 | case 26: | |
2818 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
bda7d78b | 2819 | manager_restore_original_log_target(m); |
575b300b LP |
2820 | break; |
2821 | ||
2822 | case 27: | |
bda7d78b | 2823 | manager_override_log_target(m, LOG_TARGET_CONSOLE); |
575b300b LP |
2824 | break; |
2825 | ||
2826 | case 28: | |
bda7d78b | 2827 | manager_override_log_target(m, LOG_TARGET_KMSG); |
575b300b LP |
2828 | break; |
2829 | ||
2830 | default: | |
2831 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
2832 | } | |
2833 | }} | |
034c6ed7 LP |
2834 | |
2835 | return 0; | |
2836 | } | |
2837 | ||
718db961 LP |
2838 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2839 | Manager *m = userdata; | |
2840 | Iterator i; | |
2841 | Unit *u; | |
034c6ed7 LP |
2842 | |
2843 | assert(m); | |
718db961 | 2844 | assert(m->time_change_fd == fd); |
034c6ed7 | 2845 | |
a80c1575 | 2846 | log_struct(LOG_DEBUG, |
2b044526 | 2847 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
a1230ff9 | 2848 | LOG_MESSAGE("Time has been changed")); |
034c6ed7 | 2849 | |
718db961 | 2850 | /* Restart the watch */ |
7feedd18 | 2851 | (void) manager_setup_time_change(m); |
4e434314 | 2852 | |
718db961 LP |
2853 | HASHMAP_FOREACH(u, m->units, i) |
2854 | if (UNIT_VTABLE(u)->time_change) | |
2855 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2856 | |
718db961 LP |
2857 | return 0; |
2858 | } | |
ea430986 | 2859 | |
bbf5fd8e LP |
2860 | static int manager_dispatch_timezone_change( |
2861 | sd_event_source *source, | |
2862 | const struct inotify_event *e, | |
2863 | void *userdata) { | |
2864 | ||
2865 | Manager *m = userdata; | |
2866 | int changed; | |
2867 | Iterator i; | |
2868 | Unit *u; | |
2869 | ||
2870 | assert(m); | |
2871 | ||
2872 | log_debug("inotify event for /etc/localtime"); | |
2873 | ||
2874 | changed = manager_read_timezone_stat(m); | |
f20db199 | 2875 | if (changed <= 0) |
bbf5fd8e | 2876 | return changed; |
bbf5fd8e LP |
2877 | |
2878 | /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */ | |
2879 | (void) manager_setup_timezone_change(m); | |
2880 | ||
2881 | /* Read the new timezone */ | |
2882 | tzset(); | |
2883 | ||
2884 | log_debug("Timezone has been changed (now: %s).", tzname[daylight]); | |
2885 | ||
2886 | HASHMAP_FOREACH(u, m->units, i) | |
2887 | if (UNIT_VTABLE(u)->timezone_change) | |
2888 | UNIT_VTABLE(u)->timezone_change(u); | |
2889 | ||
2890 | return 0; | |
2891 | } | |
2892 | ||
718db961 LP |
2893 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2894 | Manager *m = userdata; | |
8742514c | 2895 | |
718db961 LP |
2896 | assert(m); |
2897 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2898 | |
5a69973f LP |
2899 | /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's |
2900 | * now turn off any further console output if there's at least one service that needs console access, so that | |
2901 | * from now on our own output should not spill into that service's output anymore. After all, we support | |
2902 | * Type=idle only to beautify console output and it generally is set on services that want to own the console | |
2903 | * exclusively without our interference. */ | |
718db961 | 2904 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2905 | |
5a69973f LP |
2906 | /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer |
2907 | * by closing the pipes towards them, which is what they are waiting for. */ | |
718db961 | 2908 | manager_close_idle_pipe(m); |
03b717a3 | 2909 | |
718db961 LP |
2910 | return 0; |
2911 | } | |
31a7eb86 | 2912 | |
718db961 LP |
2913 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2914 | Manager *m = userdata; | |
fd08a840 | 2915 | int r; |
31a7eb86 | 2916 | |
718db961 | 2917 | assert(m); |
fd08a840 | 2918 | assert(source); |
9152c765 | 2919 | |
718db961 | 2920 | manager_print_jobs_in_progress(m); |
fd08a840 | 2921 | |
39cf0351 | 2922 | r = sd_event_source_set_time_relative(source, JOBS_IN_PROGRESS_PERIOD_USEC); |
fd08a840 ZJS |
2923 | if (r < 0) |
2924 | return r; | |
2925 | ||
2926 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2927 | } |
2928 | ||
2929 | int manager_loop(Manager *m) { | |
8c227e7f | 2930 | RateLimit rl = { .interval = 1*USEC_PER_SEC, .burst = 50000 }; |
9152c765 | 2931 | int r; |
9152c765 LP |
2932 | |
2933 | assert(m); | |
1fb70e66 | 2934 | assert(m->objective == MANAGER_OK); /* Ensure manager_startup() has been called */ |
9152c765 | 2935 | |
b0c918b9 LP |
2936 | manager_check_finished(m); |
2937 | ||
575b300b LP |
2938 | /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */ |
2939 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
e96d6be7 | 2940 | if (r < 0) |
575b300b | 2941 | return log_error_errno(r, "Failed to enable SIGCHLD event source: %m"); |
a4312405 | 2942 | |
af41e508 | 2943 | while (m->objective == MANAGER_OK) { |
986935cf | 2944 | usec_t wait_usec, watchdog_usec; |
9152c765 | 2945 | |
986935cf FB |
2946 | watchdog_usec = manager_get_watchdog(m, WATCHDOG_RUNTIME); |
2947 | if (timestamp_is_set(watchdog_usec)) | |
e96d6be7 LP |
2948 | watchdog_ping(); |
2949 | ||
7994ac1d | 2950 | if (!ratelimit_below(&rl)) { |
ea430986 LP |
2951 | /* Yay, something is going seriously wrong, pause a little */ |
2952 | log_warning("Looping too fast. Throttling execution a little."); | |
2953 | sleep(1); | |
2954 | } | |
2955 | ||
37a8e683 | 2956 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2957 | continue; |
2958 | ||
c5a97ed1 LP |
2959 | if (manager_dispatch_gc_job_queue(m) > 0) |
2960 | continue; | |
2961 | ||
2962 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
2963 | continue; |
2964 | ||
cf1265e1 | 2965 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2966 | continue; |
034c6ed7 | 2967 | |
91a6073e | 2968 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
2969 | continue; |
2970 | ||
a3c1168a LP |
2971 | if (manager_dispatch_stop_when_unneeded_queue(m) > 0) |
2972 | continue; | |
2973 | ||
c1e1601e | 2974 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2975 | continue; |
ea430986 | 2976 | |
c5f8a179 | 2977 | /* Sleep for watchdog runtime wait time */ |
986935cf | 2978 | if (timestamp_is_set(watchdog_usec)) |
c5f8a179 AP |
2979 | wait_usec = watchdog_runtime_wait(); |
2980 | else | |
3a43da28 | 2981 | wait_usec = USEC_INFINITY; |
9152c765 | 2982 | |
718db961 | 2983 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2984 | if (r < 0) |
2985 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2986 | } |
957ca890 | 2987 | |
af41e508 | 2988 | return m->objective; |
83c60c9f | 2989 | } |
ea430986 | 2990 | |
718db961 | 2991 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2992 | _cleanup_free_ char *n = NULL; |
4b58153d | 2993 | sd_id128_t invocation_id; |
ea430986 | 2994 | Unit *u; |
80fbf05e | 2995 | int r; |
ea430986 LP |
2996 | |
2997 | assert(m); | |
2998 | assert(s); | |
2999 | assert(_u); | |
3000 | ||
ede3a796 LP |
3001 | r = unit_name_from_dbus_path(s, &n); |
3002 | if (r < 0) | |
3003 | return r; | |
ea430986 | 3004 | |
4b58153d LP |
3005 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
3006 | * as invocation ID. */ | |
3007 | r = sd_id128_from_string(n, &invocation_id); | |
3008 | if (r >= 0) { | |
3009 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
3010 | if (u) { | |
3011 | *_u = u; | |
3012 | return 0; | |
3013 | } | |
3014 | ||
930c124c ZJS |
3015 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, |
3016 | "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", | |
3017 | SD_ID128_FORMAT_VAL(invocation_id)); | |
4b58153d LP |
3018 | } |
3019 | ||
00c83b43 | 3020 | /* If this didn't work, we check if this is a unit name */ |
930c124c ZJS |
3021 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
3022 | _cleanup_free_ char *nn = NULL; | |
3023 | ||
3024 | nn = cescape(n); | |
3025 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, | |
3026 | "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn)); | |
3027 | } | |
00c83b43 | 3028 | |
80fbf05e | 3029 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
3030 | if (r < 0) |
3031 | return r; | |
ea430986 LP |
3032 | |
3033 | *_u = u; | |
ea430986 LP |
3034 | return 0; |
3035 | } | |
86fbf370 LP |
3036 | |
3037 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 3038 | const char *p; |
86fbf370 | 3039 | unsigned id; |
718db961 | 3040 | Job *j; |
86fbf370 LP |
3041 | int r; |
3042 | ||
3043 | assert(m); | |
3044 | assert(s); | |
3045 | assert(_j); | |
3046 | ||
718db961 LP |
3047 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
3048 | if (!p) | |
86fbf370 LP |
3049 | return -EINVAL; |
3050 | ||
718db961 | 3051 | r = safe_atou(p, &id); |
8742514c | 3052 | if (r < 0) |
86fbf370 LP |
3053 | return r; |
3054 | ||
8742514c LP |
3055 | j = manager_get_job(m, id); |
3056 | if (!j) | |
86fbf370 LP |
3057 | return -ENOENT; |
3058 | ||
3059 | *_j = j; | |
3060 | ||
3061 | return 0; | |
3062 | } | |
dfcd764e | 3063 | |
4927fcae | 3064 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 3065 | |
349cc4a5 | 3066 | #if HAVE_AUDIT |
2ba11090 | 3067 | _cleanup_free_ char *p = NULL; |
0aa281df | 3068 | const char *msg; |
7410616c | 3069 | int audit_fd, r; |
e537352b | 3070 | |
463d0d15 | 3071 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
3072 | return; |
3073 | ||
c1165f82 LP |
3074 | audit_fd = get_audit_fd(); |
3075 | if (audit_fd < 0) | |
e537352b LP |
3076 | return; |
3077 | ||
bbd3a7ba LP |
3078 | /* Don't generate audit events if the service was already |
3079 | * started and we're just deserializing */ | |
2c289ea8 | 3080 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
3081 | return; |
3082 | ||
ac155bb8 | 3083 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
3084 | return; |
3085 | ||
7410616c LP |
3086 | r = unit_name_to_prefix_and_instance(u->id, &p); |
3087 | if (r < 0) { | |
3088 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
3089 | return; |
3090 | } | |
3091 | ||
63c372cb | 3092 | msg = strjoina("unit=", p); |
0aa281df LP |
3093 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
3094 | if (errno == EPERM) | |
391ade86 | 3095 | /* We aren't allowed to send audit messages? |
44785992 | 3096 | * Then let's not retry again. */ |
c1165f82 | 3097 | close_audit_fd(); |
0aa281df | 3098 | else |
56f64d95 | 3099 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 3100 | } |
4927fcae | 3101 | #endif |
e537352b | 3102 | |
e537352b LP |
3103 | } |
3104 | ||
e983b760 | 3105 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 3106 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
3107 | _cleanup_free_ char *message = NULL; |
3108 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 3109 | int n = 0; |
e983b760 LP |
3110 | |
3111 | /* Don't generate plymouth events if the service was already | |
3112 | * started and we're just deserializing */ | |
2c289ea8 | 3113 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
3114 | return; |
3115 | ||
463d0d15 | 3116 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
3117 | return; |
3118 | ||
75f86906 | 3119 | if (detect_container() > 0) |
3772995a LP |
3120 | return; |
3121 | ||
ec2ce0c5 | 3122 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
3123 | return; |
3124 | ||
3125 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
3126 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
3127 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
3128 | if (fd < 0) { | |
56f64d95 | 3129 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
3130 | return; |
3131 | } | |
3132 | ||
fc2fffe7 | 3133 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
f60a028a | 3134 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3135 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 3136 | return; |
e983b760 LP |
3137 | } |
3138 | ||
ac155bb8 | 3139 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 3140 | log_oom(); |
2ba11090 | 3141 | return; |
e983b760 LP |
3142 | } |
3143 | ||
3144 | errno = 0; | |
2ba11090 | 3145 | if (write(fd, message, n + 1) != n + 1) |
f60a028a | 3146 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3147 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
3148 | } |
3149 | ||
d8d5ab98 | 3150 | int manager_open_serialization(Manager *m, FILE **_f) { |
b46c3e49 | 3151 | _cleanup_close_ int fd = -1; |
a16e1123 LP |
3152 | FILE *f; |
3153 | ||
3154 | assert(_f); | |
3155 | ||
504afd7c ZJS |
3156 | fd = open_serialization_fd("systemd-state"); |
3157 | if (fd < 0) | |
3158 | return fd; | |
a16e1123 | 3159 | |
b46c3e49 VC |
3160 | f = take_fdopen(&fd, "w+"); |
3161 | if (!f) | |
a16e1123 LP |
3162 | return -errno; |
3163 | ||
3164 | *_f = f; | |
a16e1123 LP |
3165 | return 0; |
3166 | } | |
3167 | ||
cdd620e3 LP |
3168 | static bool manager_timestamp_shall_serialize(ManagerTimestamp t) { |
3169 | ||
3170 | if (!in_initrd()) | |
3171 | return true; | |
3172 | ||
3173 | /* The following timestamps only apply to the host system, hence only serialize them there */ | |
3174 | return !IN_SET(t, | |
3175 | MANAGER_TIMESTAMP_USERSPACE, MANAGER_TIMESTAMP_FINISH, | |
3176 | MANAGER_TIMESTAMP_SECURITY_START, MANAGER_TIMESTAMP_SECURITY_FINISH, | |
3177 | MANAGER_TIMESTAMP_GENERATORS_START, MANAGER_TIMESTAMP_GENERATORS_FINISH, | |
3178 | MANAGER_TIMESTAMP_UNITS_LOAD_START, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH); | |
3179 | } | |
3180 | ||
80f605c8 FB |
3181 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3182 | ||
3183 | static void manager_serialize_uid_refs_internal( | |
3184 | Manager *m, | |
3185 | FILE *f, | |
3186 | Hashmap **uid_refs, | |
3187 | const char *field_name) { | |
3188 | ||
3189 | Iterator i; | |
3190 | void *p, *k; | |
3191 | ||
3192 | assert(m); | |
3193 | assert(f); | |
3194 | assert(uid_refs); | |
3195 | assert(field_name); | |
3196 | ||
3197 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as | |
3198 | * the actual counter of it is better rebuild after a reload/reexec. */ | |
3199 | ||
3200 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3201 | uint32_t c; | |
3202 | uid_t uid; | |
3203 | ||
3204 | uid = PTR_TO_UID(k); | |
3205 | c = PTR_TO_UINT32(p); | |
3206 | ||
3207 | if (!(c & DESTROY_IPC_FLAG)) | |
3208 | continue; | |
3209 | ||
3210 | (void) serialize_item_format(f, field_name, UID_FMT, uid); | |
3211 | } | |
3212 | } | |
3213 | ||
3214 | static void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3215 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3216 | } | |
3217 | ||
3218 | static void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3219 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3220 | } | |
3221 | ||
4daf832a LP |
3222 | int manager_serialize( |
3223 | Manager *m, | |
3224 | FILE *f, | |
3225 | FDSet *fds, | |
3226 | bool switching_root) { | |
3227 | ||
9f9f0342 | 3228 | const char *t; |
a16e1123 LP |
3229 | Iterator i; |
3230 | Unit *u; | |
a16e1123 LP |
3231 | int r; |
3232 | ||
3233 | assert(m); | |
3234 | assert(f); | |
3235 | assert(fds); | |
3236 | ||
cb16b085 | 3237 | _cleanup_(manager_reloading_stopp) _unused_ Manager *reloading = manager_reloading_start(m); |
38c52d46 | 3238 | |
d68c645b LP |
3239 | (void) serialize_item_format(f, "current-job-id", "%" PRIu32, m->current_job_id); |
3240 | (void) serialize_item_format(f, "n-installed-jobs", "%u", m->n_installed_jobs); | |
3241 | (void) serialize_item_format(f, "n-failed-jobs", "%u", m->n_failed_jobs); | |
3242 | (void) serialize_bool(f, "taint-usr", m->taint_usr); | |
3243 | (void) serialize_bool(f, "ready-sent", m->ready_sent); | |
3244 | (void) serialize_bool(f, "taint-logged", m->taint_logged); | |
3245 | (void) serialize_bool(f, "service-watchdogs", m->service_watchdogs); | |
01d67b43 | 3246 | |
c6e892bc YW |
3247 | /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */ |
3248 | (void) serialize_bool(f, "honor-device-enumeration", !switching_root); | |
3249 | ||
44a41954 FB |
3250 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) |
3251 | (void) serialize_item(f, "show-status-overridden", | |
3252 | show_status_to_string(m->show_status_overridden)); | |
bee38b5c | 3253 | |
a6ecbf83 | 3254 | if (m->log_level_overridden) |
d68c645b | 3255 | (void) serialize_item_format(f, "log-level-override", "%i", log_get_max_level()); |
bda7d78b | 3256 | if (m->log_target_overridden) |
d68c645b | 3257 | (void) serialize_item(f, "log-target-override", log_target_to_string(log_get_target())); |
a6ecbf83 | 3258 | |
986935cf FB |
3259 | (void) serialize_usec(f, "runtime-watchdog-overridden", m->watchdog_overridden[WATCHDOG_RUNTIME]); |
3260 | (void) serialize_usec(f, "reboot-watchdog-overridden", m->watchdog_overridden[WATCHDOG_REBOOT]); | |
3261 | (void) serialize_usec(f, "kexec-watchdog-overridden", m->watchdog_overridden[WATCHDOG_KEXEC]); | |
3262 | ||
5b10116e | 3263 | for (ManagerTimestamp q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { |
c475e57d LP |
3264 | _cleanup_free_ char *joined = NULL; |
3265 | ||
cdd620e3 | 3266 | if (!manager_timestamp_shall_serialize(q)) |
9f9f0342 | 3267 | continue; |
f38ed060 | 3268 | |
c475e57d LP |
3269 | joined = strjoin(manager_timestamp_to_string(q), "-timestamp"); |
3270 | if (!joined) | |
3271 | return log_oom(); | |
3272 | ||
d68c645b | 3273 | (void) serialize_dual_timestamp(f, joined, m->timestamps + q); |
f38ed060 | 3274 | } |
47a483a1 | 3275 | |
fe902fa4 | 3276 | if (!switching_root) |
1ad6e8b3 | 3277 | (void) serialize_strv(f, "env", m->client_environment); |
4a9fd066 | 3278 | |
d86f9d52 | 3279 | if (m->notify_fd >= 0) { |
d68c645b LP |
3280 | r = serialize_fd(f, fds, "notify-fd", m->notify_fd); |
3281 | if (r < 0) | |
3282 | return r; | |
d86f9d52 | 3283 | |
d68c645b | 3284 | (void) serialize_item(f, "notify-socket", m->notify_socket); |
d86f9d52 LP |
3285 | } |
3286 | ||
d8fdc620 | 3287 | if (m->cgroups_agent_fd >= 0) { |
d68c645b LP |
3288 | r = serialize_fd(f, fds, "cgroups-agent-fd", m->cgroups_agent_fd); |
3289 | if (r < 0) | |
3290 | return r; | |
d8fdc620 LP |
3291 | } |
3292 | ||
00d9ef85 LP |
3293 | if (m->user_lookup_fds[0] >= 0) { |
3294 | int copy0, copy1; | |
3295 | ||
3296 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
d147e2b6 | 3297 | if (copy0 < 0) |
d68c645b | 3298 | return log_error_errno(copy0, "Failed to add user lookup fd to serialization: %m"); |
00d9ef85 LP |
3299 | |
3300 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
d147e2b6 | 3301 | if (copy1 < 0) |
d68c645b | 3302 | return log_error_errno(copy1, "Failed to add user lookup fd to serialization: %m"); |
00d9ef85 | 3303 | |
d68c645b | 3304 | (void) serialize_item_format(f, "user-lookup", "%i %i", copy0, copy1); |
00d9ef85 LP |
3305 | } |
3306 | ||
05a98afd | 3307 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 3308 | |
29206d46 LP |
3309 | r = dynamic_user_serialize(m, f, fds); |
3310 | if (r < 0) | |
d147e2b6 | 3311 | return r; |
29206d46 | 3312 | |
00d9ef85 LP |
3313 | manager_serialize_uid_refs(m, f); |
3314 | manager_serialize_gid_refs(m, f); | |
3315 | ||
e8a565cb YW |
3316 | r = exec_runtime_serialize(m, f, fds); |
3317 | if (r < 0) | |
d147e2b6 | 3318 | return r; |
e8a565cb | 3319 | |
0d536673 | 3320 | (void) fputc('\n', f); |
f2382a94 | 3321 | |
a16e1123 | 3322 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 3323 | if (u->id != t) |
a16e1123 LP |
3324 | continue; |
3325 | ||
a16e1123 | 3326 | /* Start marker */ |
0d536673 LP |
3327 | fputs(u->id, f); |
3328 | fputc('\n', f); | |
a16e1123 | 3329 | |
6fa48533 | 3330 | r = unit_serialize(u, f, fds, !switching_root); |
4daf832a | 3331 | if (r < 0) |
d147e2b6 | 3332 | return r; |
a16e1123 LP |
3333 | } |
3334 | ||
01d32c00 LP |
3335 | r = fflush_and_check(f); |
3336 | if (r < 0) | |
d68c645b | 3337 | return log_error_errno(r, "Failed to flush serialization: %m"); |
a16e1123 | 3338 | |
b23de6af LP |
3339 | r = bus_fdset_add_all(m, fds); |
3340 | if (r < 0) | |
d68c645b | 3341 | return log_error_errno(r, "Failed to add bus sockets to serialization: %m"); |
4daf832a | 3342 | |
d147e2b6 | 3343 | return 0; |
a16e1123 LP |
3344 | } |
3345 | ||
651b3b6c FB |
3346 | static int manager_deserialize_one_unit(Manager *m, const char *name, FILE *f, FDSet *fds) { |
3347 | Unit *u; | |
3348 | int r; | |
3349 | ||
3350 | r = manager_load_unit(m, name, NULL, NULL, &u); | |
3351 | if (r < 0) { | |
3352 | if (r == -ENOMEM) | |
3353 | return r; | |
3354 | return log_notice_errno(r, "Failed to load unit \"%s\", skipping deserialization: %m", name); | |
3355 | } | |
3356 | ||
3357 | r = unit_deserialize(u, f, fds); | |
3358 | if (r < 0) { | |
3359 | if (r == -ENOMEM) | |
3360 | return r; | |
3361 | return log_notice_errno(r, "Failed to deserialize unit \"%s\", skipping: %m", name); | |
3362 | } | |
3363 | ||
3364 | return 0; | |
3365 | } | |
3366 | ||
3367 | static int manager_deserialize_units(Manager *m, FILE *f, FDSet *fds) { | |
651b3b6c FB |
3368 | const char *unit_name; |
3369 | int r; | |
3370 | ||
3371 | for (;;) { | |
7334ade4 | 3372 | _cleanup_free_ char *line = NULL; |
651b3b6c FB |
3373 | /* Start marker */ |
3374 | r = read_line(f, LONG_LINE_MAX, &line); | |
3375 | if (r < 0) | |
3376 | return log_error_errno(r, "Failed to read serialization line: %m"); | |
3377 | if (r == 0) | |
3378 | break; | |
3379 | ||
3380 | unit_name = strstrip(line); | |
3381 | ||
3382 | r = manager_deserialize_one_unit(m, unit_name, f, fds); | |
3383 | if (r == -ENOMEM) | |
3384 | return r; | |
3385 | if (r < 0) { | |
3386 | r = unit_deserialize_skip(f); | |
3387 | if (r < 0) | |
3388 | return r; | |
3389 | } | |
3390 | } | |
3391 | ||
3392 | return 0; | |
3393 | } | |
3394 | ||
986935cf FB |
3395 | usec_t manager_get_watchdog(Manager *m, WatchdogType t) { |
3396 | assert(m); | |
3397 | ||
3398 | if (MANAGER_IS_USER(m)) | |
3399 | return USEC_INFINITY; | |
3400 | ||
3401 | if (timestamp_is_set(m->watchdog_overridden[t])) | |
3402 | return m->watchdog_overridden[t]; | |
3403 | ||
3404 | return m->watchdog[t]; | |
3405 | } | |
3406 | ||
3407 | void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout) { | |
3408 | int r = 0; | |
3409 | ||
3410 | assert(m); | |
3411 | ||
3412 | if (MANAGER_IS_USER(m)) | |
3413 | return; | |
3414 | ||
3415 | if (m->watchdog[t] == timeout) | |
3416 | return; | |
3417 | ||
3418 | if (t == WATCHDOG_RUNTIME) | |
3419 | if (!timestamp_is_set(m->watchdog_overridden[WATCHDOG_RUNTIME])) { | |
3420 | if (timestamp_is_set(timeout)) | |
3421 | r = watchdog_set_timeout(&timeout); | |
3422 | else | |
3423 | watchdog_close(true); | |
3424 | } | |
3425 | ||
3426 | if (r >= 0) | |
3427 | m->watchdog[t] = timeout; | |
3428 | } | |
3429 | ||
43bba15a | 3430 | int manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout) { |
986935cf FB |
3431 | int r = 0; |
3432 | ||
3433 | assert(m); | |
3434 | ||
3435 | if (MANAGER_IS_USER(m)) | |
3436 | return 0; | |
3437 | ||
3438 | if (m->watchdog_overridden[t] == timeout) | |
3439 | return 0; | |
3440 | ||
3441 | if (t == WATCHDOG_RUNTIME) { | |
3442 | usec_t *p; | |
3443 | ||
3444 | p = timestamp_is_set(timeout) ? &timeout : &m->watchdog[t]; | |
3445 | if (timestamp_is_set(*p)) | |
3446 | r = watchdog_set_timeout(p); | |
3447 | else | |
3448 | watchdog_close(true); | |
3449 | } | |
3450 | ||
3451 | if (r >= 0) | |
3452 | m->watchdog_overridden[t] = timeout; | |
3453 | ||
3454 | return 0; | |
3455 | } | |
3456 | ||
b406c6d1 FB |
3457 | static void manager_deserialize_uid_refs_one_internal( |
3458 | Manager *m, | |
3459 | Hashmap** uid_refs, | |
3460 | const char *value) { | |
3461 | ||
3462 | uid_t uid; | |
3463 | uint32_t c; | |
3464 | int r; | |
3465 | ||
3466 | assert(m); | |
3467 | assert(uid_refs); | |
3468 | assert(value); | |
3469 | ||
3470 | r = parse_uid(value, &uid); | |
3471 | if (r < 0 || uid == 0) { | |
3472 | log_debug("Unable to parse UID reference serialization: " UID_FMT, uid); | |
3473 | return; | |
3474 | } | |
3475 | ||
3476 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3477 | if (r < 0) { | |
3478 | log_oom(); | |
3479 | return; | |
3480 | } | |
3481 | ||
3482 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3483 | if (c & DESTROY_IPC_FLAG) | |
3484 | return; | |
3485 | ||
3486 | c |= DESTROY_IPC_FLAG; | |
3487 | ||
3488 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3489 | if (r < 0) { | |
3490 | log_debug_errno(r, "Failed to add UID reference entry: %m"); | |
3491 | return; | |
3492 | } | |
3493 | } | |
3494 | ||
3495 | static void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3496 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3497 | } | |
3498 | ||
3499 | static void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3500 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3501 | } | |
3502 | ||
a16e1123 LP |
3503 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { |
3504 | int r = 0; | |
3505 | ||
3506 | assert(m); | |
3507 | assert(f); | |
3508 | ||
3509 | log_debug("Deserializing state..."); | |
3510 | ||
eb10d0bf LP |
3511 | /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have |
3512 | * increased it to non-zero, which is why we just increase it by one here and down again at the end of this | |
3513 | * call. */ | |
cb16b085 | 3514 | _cleanup_(manager_reloading_stopp) _unused_ Manager *reloading = manager_reloading_start(m); |
82c64bf5 | 3515 | |
10f8e83c | 3516 | for (;;) { |
8948b341 | 3517 | _cleanup_free_ char *line = NULL; |
d233c99a | 3518 | const char *val, *l; |
10f8e83c | 3519 | |
8948b341 LP |
3520 | r = read_line(f, LONG_LINE_MAX, &line); |
3521 | if (r < 0) | |
3522 | return log_error_errno(r, "Failed to read serialization line: %m"); | |
3523 | if (r == 0) | |
3524 | break; | |
10f8e83c | 3525 | |
10f8e83c | 3526 | l = strstrip(line); |
8948b341 | 3527 | if (isempty(l)) /* end marker */ |
10f8e83c LP |
3528 | break; |
3529 | ||
fb4650aa | 3530 | if ((val = startswith(l, "current-job-id="))) { |
01d67b43 LP |
3531 | uint32_t id; |
3532 | ||
fb4650aa | 3533 | if (safe_atou32(val, &id) < 0) |
b2a8a3dd | 3534 | log_notice("Failed to parse current job id value '%s', ignoring.", val); |
01d67b43 LP |
3535 | else |
3536 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 3537 | |
fb4650aa | 3538 | } else if ((val = startswith(l, "n-installed-jobs="))) { |
33c5fae9 LP |
3539 | uint32_t n; |
3540 | ||
fb4650aa | 3541 | if (safe_atou32(val, &n) < 0) |
b2a8a3dd | 3542 | log_notice("Failed to parse installed jobs counter '%s', ignoring.", val); |
33c5fae9 LP |
3543 | else |
3544 | m->n_installed_jobs += n; | |
718db961 | 3545 | |
fb4650aa | 3546 | } else if ((val = startswith(l, "n-failed-jobs="))) { |
33c5fae9 LP |
3547 | uint32_t n; |
3548 | ||
fb4650aa | 3549 | if (safe_atou32(val, &n) < 0) |
b2a8a3dd | 3550 | log_notice("Failed to parse failed jobs counter '%s', ignoring.", val); |
33c5fae9 LP |
3551 | else |
3552 | m->n_failed_jobs += n; | |
718db961 | 3553 | |
fb4650aa | 3554 | } else if ((val = startswith(l, "taint-usr="))) { |
01d67b43 LP |
3555 | int b; |
3556 | ||
fb4650aa | 3557 | b = parse_boolean(val); |
e3dd987c | 3558 | if (b < 0) |
b2a8a3dd | 3559 | log_notice("Failed to parse taint /usr flag '%s', ignoring.", val); |
01d67b43 LP |
3560 | else |
3561 | m->taint_usr = m->taint_usr || b; | |
718db961 | 3562 | |
0c2826c6 ZJS |
3563 | } else if ((val = startswith(l, "ready-sent="))) { |
3564 | int b; | |
3565 | ||
3566 | b = parse_boolean(val); | |
3567 | if (b < 0) | |
b2a8a3dd | 3568 | log_notice("Failed to parse ready-sent flag '%s', ignoring.", val); |
0c2826c6 ZJS |
3569 | else |
3570 | m->ready_sent = m->ready_sent || b; | |
3571 | ||
d8eb10d6 ZJS |
3572 | } else if ((val = startswith(l, "taint-logged="))) { |
3573 | int b; | |
3574 | ||
3575 | b = parse_boolean(val); | |
3576 | if (b < 0) | |
b2a8a3dd | 3577 | log_notice("Failed to parse taint-logged flag '%s', ignoring.", val); |
d8eb10d6 ZJS |
3578 | else |
3579 | m->taint_logged = m->taint_logged || b; | |
3580 | ||
2a12e32e JK |
3581 | } else if ((val = startswith(l, "service-watchdogs="))) { |
3582 | int b; | |
3583 | ||
3584 | b = parse_boolean(val); | |
3585 | if (b < 0) | |
b2a8a3dd | 3586 | log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val); |
2a12e32e JK |
3587 | else |
3588 | m->service_watchdogs = b; | |
3589 | ||
c6e892bc YW |
3590 | } else if ((val = startswith(l, "honor-device-enumeration="))) { |
3591 | int b; | |
3592 | ||
3593 | b = parse_boolean(val); | |
3594 | if (b < 0) | |
3595 | log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val); | |
3596 | else | |
3597 | m->honor_device_enumeration = b; | |
3598 | ||
44a41954 | 3599 | } else if ((val = startswith(l, "show-status-overridden="))) { |
bee38b5c YW |
3600 | ShowStatus s; |
3601 | ||
3602 | s = show_status_from_string(val); | |
3603 | if (s < 0) | |
44a41954 | 3604 | log_notice("Failed to parse show-status-overridden flag '%s', ignoring.", val); |
bee38b5c | 3605 | else |
43bba15a | 3606 | manager_override_show_status(m, s, "deserialize"); |
bee38b5c | 3607 | |
a6ecbf83 FB |
3608 | } else if ((val = startswith(l, "log-level-override="))) { |
3609 | int level; | |
3610 | ||
3611 | level = log_level_from_string(val); | |
3612 | if (level < 0) | |
3613 | log_notice("Failed to parse log-level-override value '%s', ignoring.", val); | |
3614 | else | |
3615 | manager_override_log_level(m, level); | |
3616 | ||
bda7d78b FB |
3617 | } else if ((val = startswith(l, "log-target-override="))) { |
3618 | LogTarget target; | |
3619 | ||
3620 | target = log_target_from_string(val); | |
3621 | if (target < 0) | |
3622 | log_notice("Failed to parse log-target-override value '%s', ignoring.", val); | |
3623 | else | |
3624 | manager_override_log_target(m, target); | |
3625 | ||
986935cf FB |
3626 | } else if ((val = startswith(l, "runtime-watchdog-overridden="))) { |
3627 | usec_t t; | |
3628 | ||
3629 | if (deserialize_usec(val, &t) < 0) | |
3630 | log_notice("Failed to parse runtime-watchdog-overridden value '%s', ignoring.", val); | |
3631 | else | |
43bba15a | 3632 | manager_override_watchdog(m, WATCHDOG_RUNTIME, t); |
986935cf FB |
3633 | |
3634 | } else if ((val = startswith(l, "reboot-watchdog-overridden="))) { | |
3635 | usec_t t; | |
3636 | ||
3637 | if (deserialize_usec(val, &t) < 0) | |
3638 | log_notice("Failed to parse reboot-watchdog-overridden value '%s', ignoring.", val); | |
3639 | else | |
43bba15a | 3640 | manager_override_watchdog(m, WATCHDOG_REBOOT, t); |
986935cf FB |
3641 | |
3642 | } else if ((val = startswith(l, "kexec-watchdog-overridden="))) { | |
3643 | usec_t t; | |
3644 | ||
3645 | if (deserialize_usec(val, &t) < 0) | |
3646 | log_notice("Failed to parse kexec-watchdog-overridden value '%s', ignoring.", val); | |
3647 | else | |
43bba15a | 3648 | manager_override_watchdog(m, WATCHDOG_KEXEC, t); |
986935cf | 3649 | |
9f9f0342 | 3650 | } else if (startswith(l, "env=")) { |
1ad6e8b3 | 3651 | r = deserialize_environment(l + 4, &m->client_environment); |
527b7a42 | 3652 | if (r < 0) |
b2a8a3dd | 3653 | log_notice_errno(r, "Failed to parse environment entry: \"%s\", ignoring: %m", l); |
e3dd987c | 3654 | |
fb4650aa | 3655 | } else if ((val = startswith(l, "notify-fd="))) { |
d86f9d52 LP |
3656 | int fd; |
3657 | ||
fb4650aa | 3658 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
b2a8a3dd | 3659 | log_notice("Failed to parse notify fd, ignoring: \"%s\"", val); |
d86f9d52 | 3660 | else { |
03e334a1 LP |
3661 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
3662 | safe_close(m->notify_fd); | |
d86f9d52 LP |
3663 | m->notify_fd = fdset_remove(fds, fd); |
3664 | } | |
3665 | ||
fb4650aa | 3666 | } else if ((val = startswith(l, "notify-socket="))) { |
05067c3c ZJS |
3667 | r = free_and_strdup(&m->notify_socket, val); |
3668 | if (r < 0) | |
3669 | return r; | |
d86f9d52 | 3670 | |
fb4650aa | 3671 | } else if ((val = startswith(l, "cgroups-agent-fd="))) { |
d8fdc620 LP |
3672 | int fd; |
3673 | ||
fb4650aa | 3674 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
b2a8a3dd | 3675 | log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val); |
d8fdc620 LP |
3676 | else { |
3677 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
3678 | safe_close(m->cgroups_agent_fd); | |
3679 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
3680 | } | |
3681 | ||
fb4650aa | 3682 | } else if ((val = startswith(l, "user-lookup="))) { |
00d9ef85 LP |
3683 | int fd0, fd1; |
3684 | ||
fb4650aa | 3685 | if (sscanf(val, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) |
b2a8a3dd | 3686 | log_notice("Failed to parse user lookup fd, ignoring: %s", val); |
00d9ef85 LP |
3687 | else { |
3688 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
3689 | safe_close_pair(m->user_lookup_fds); | |
3690 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
3691 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
3692 | } | |
3693 | ||
fb4650aa ZJS |
3694 | } else if ((val = startswith(l, "dynamic-user="))) |
3695 | dynamic_user_deserialize_one(m, val, fds); | |
3696 | else if ((val = startswith(l, "destroy-ipc-uid="))) | |
3697 | manager_deserialize_uid_refs_one(m, val); | |
3698 | else if ((val = startswith(l, "destroy-ipc-gid="))) | |
3699 | manager_deserialize_gid_refs_one(m, val); | |
e8a565cb | 3700 | else if ((val = startswith(l, "exec-runtime="))) |
56a13a49 | 3701 | (void) exec_runtime_deserialize_one(m, val, fds); |
fb4650aa | 3702 | else if ((val = startswith(l, "subscribed="))) { |
05a98afd | 3703 | |
05067c3c ZJS |
3704 | if (strv_extend(&m->deserialized_subscribed, val) < 0) |
3705 | return -ENOMEM; | |
18869883 | 3706 | |
9f9f0342 LP |
3707 | } else { |
3708 | ManagerTimestamp q; | |
3709 | ||
3710 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
3711 | val = startswith(l, manager_timestamp_to_string(q)); | |
3712 | if (!val) | |
3713 | continue; | |
05a98afd | 3714 | |
9f9f0342 LP |
3715 | val = startswith(val, "-timestamp="); |
3716 | if (val) | |
3717 | break; | |
3718 | } | |
05a98afd | 3719 | |
9f9f0342 | 3720 | if (q < _MANAGER_TIMESTAMP_MAX) /* found it */ |
d68c645b | 3721 | (void) deserialize_dual_timestamp(val, m->timestamps + q); |
9f9f0342 | 3722 | else if (!startswith(l, "kdbus-fd=")) /* ignore kdbus */ |
b2a8a3dd | 3723 | log_notice("Unknown serialization item '%s', ignoring.", l); |
9f9f0342 | 3724 | } |
10f8e83c LP |
3725 | } |
3726 | ||
651b3b6c | 3727 | return manager_deserialize_units(m, f, fds); |
a16e1123 LP |
3728 | } |
3729 | ||
3730 | int manager_reload(Manager *m) { | |
d147e2b6 | 3731 | _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
51d122af | 3732 | _cleanup_fdset_free_ FDSet *fds = NULL; |
6a33af40 LP |
3733 | _cleanup_fclose_ FILE *f = NULL; |
3734 | int r; | |
a16e1123 LP |
3735 | |
3736 | assert(m); | |
3737 | ||
07719a21 LP |
3738 | r = manager_open_serialization(m, &f); |
3739 | if (r < 0) | |
6a33af40 | 3740 | return log_error_errno(r, "Failed to create serialization file: %m"); |
38c52d46 | 3741 | |
07719a21 | 3742 | fds = fdset_new(); |
6a33af40 LP |
3743 | if (!fds) |
3744 | return log_oom(); | |
3745 | ||
d147e2b6 ZJS |
3746 | /* We are officially in reload mode from here on. */ |
3747 | reloading = manager_reloading_start(m); | |
a16e1123 | 3748 | |
b3680f49 | 3749 | r = manager_serialize(m, f, fds, false); |
d147e2b6 | 3750 | if (r < 0) |
d68c645b | 3751 | return r; |
a16e1123 | 3752 | |
d147e2b6 ZJS |
3753 | if (fseeko(f, 0, SEEK_SET) < 0) |
3754 | return log_error_errno(errno, "Failed to seek to beginning of serialization: %m"); | |
a16e1123 | 3755 | |
6a33af40 | 3756 | /* 💀 This is the point of no return, from here on there is no way back. 💀 */ |
d147e2b6 | 3757 | reloading = NULL; |
6a33af40 LP |
3758 | |
3759 | bus_manager_send_reloading(m, true); | |
3760 | ||
3761 | /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users | |
3762 | * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need | |
3763 | * it.*/ | |
3764 | ||
a16e1123 | 3765 | manager_clear_jobs_and_units(m); |
07a78643 | 3766 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 3767 | lookup_paths_free(&m->lookup_paths); |
e8a565cb | 3768 | exec_runtime_vacuum(m); |
29206d46 | 3769 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
3770 | m->uid_refs = hashmap_free(m->uid_refs); |
3771 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 3772 | |
7c3733d5 | 3773 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
6a33af40 LP |
3774 | if (r < 0) |
3775 | log_warning_errno(r, "Failed to initialize path lookup table, ignoring: %m"); | |
5a1e9937 | 3776 | |
6a33af40 LP |
3777 | (void) manager_run_environment_generators(m); |
3778 | (void) manager_run_generators(m); | |
64691d20 | 3779 | |
581fef8d | 3780 | lookup_paths_log(&m->lookup_paths); |
07719a21 | 3781 | |
91e0ee5f | 3782 | /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */ |
e8630e69 | 3783 | manager_free_unit_name_maps(m); |
5a1e9937 | 3784 | |
6a33af40 | 3785 | /* First, enumerate what we can from kernel and suchlike */ |
3ad2afb6 | 3786 | manager_enumerate_perpetual(m); |
ba64af90 | 3787 | manager_enumerate(m); |
a16e1123 LP |
3788 | |
3789 | /* Second, deserialize our stored data */ | |
6a33af40 LP |
3790 | r = manager_deserialize(m, f, fds); |
3791 | if (r < 0) | |
3792 | log_warning_errno(r, "Deserialization failed, proceeding anyway: %m"); | |
a16e1123 | 3793 | |
6a33af40 | 3794 | /* We don't need the serialization anymore */ |
62b0cbb3 | 3795 | f = safe_fclose(f); |
a16e1123 | 3796 | |
6a33af40 LP |
3797 | /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */ |
3798 | (void) manager_setup_notify(m); | |
3799 | (void) manager_setup_cgroups_agent(m); | |
3800 | (void) manager_setup_user_lookup_fd(m); | |
00d9ef85 | 3801 | |
a16e1123 | 3802 | /* Third, fire things up! */ |
007c6337 | 3803 | manager_coldplug(m); |
a16e1123 | 3804 | |
5197be06 LP |
3805 | /* Clean up runtime objects no longer referenced */ |
3806 | manager_vacuum(m); | |
e8a565cb | 3807 | |
6a33af40 | 3808 | /* Consider the reload process complete now. */ |
31dc1ca3 LP |
3809 | assert(m->n_reloading > 0); |
3810 | m->n_reloading--; | |
3811 | ||
c6e892bc YW |
3812 | /* On manager reloading, device tag data should exists, thus, we should honor the results of device |
3813 | * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So, | |
3814 | * let's always set the flag here for safety. */ | |
3815 | m->honor_device_enumeration = true; | |
3816 | ||
5ce5e1ad | 3817 | manager_ready(m); |
8936a5e3 | 3818 | |
71445ae7 | 3819 | m->send_reloading_done = true; |
6a33af40 | 3820 | return 0; |
a16e1123 LP |
3821 | } |
3822 | ||
fdf20a31 | 3823 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
3824 | Unit *u; |
3825 | Iterator i; | |
3826 | ||
3827 | assert(m); | |
3828 | ||
3829 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 3830 | unit_reset_failed(u); |
5632e374 LP |
3831 | } |
3832 | ||
31afa0a4 | 3833 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3834 | Unit *u; |
3835 | ||
3836 | assert(m); | |
3837 | assert(name); | |
3838 | ||
3839 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3840 | u = manager_get_unit(m, name); |
3841 | if (!u) | |
8f6df3fa LP |
3842 | return true; |
3843 | ||
31afa0a4 | 3844 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3845 | } |
3846 | ||
d8eb10d6 ZJS |
3847 | static void log_taint_string(Manager *m) { |
3848 | _cleanup_free_ char *taint = NULL; | |
3849 | ||
3850 | assert(m); | |
3851 | ||
3852 | if (MANAGER_IS_USER(m) || m->taint_logged) | |
3853 | return; | |
3854 | ||
3855 | m->taint_logged = true; /* only check for taint once */ | |
3856 | ||
3857 | taint = manager_taint_string(m); | |
3858 | if (isempty(taint)) | |
3859 | return; | |
3860 | ||
3861 | log_struct(LOG_NOTICE, | |
3862 | LOG_MESSAGE("System is tainted: %s", taint), | |
3863 | "TAINT=%s", taint, | |
a1230ff9 | 3864 | "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR); |
d8eb10d6 ZJS |
3865 | } |
3866 | ||
56dacdbc | 3867 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 3868 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 3869 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3870 | |
638cece4 | 3871 | if (MANAGER_IS_TEST_RUN(m)) |
b0c918b9 LP |
3872 | return; |
3873 | ||
463d0d15 | 3874 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
dd1db3c2 | 3875 | char ts[FORMAT_TIMESPAN_MAX]; |
dc3c9f5e ZJS |
3876 | char buf[FORMAT_TIMESPAN_MAX + STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX + STRLEN(" (loader) + ")] |
3877 | = {}; | |
3878 | char *p = buf; | |
3879 | size_t size = sizeof buf; | |
e03ae661 | 3880 | |
9f9f0342 LP |
3881 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3882 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3883 | * negative values. */ |
3884 | ||
9f9f0342 LP |
3885 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3886 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3887 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3888 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3889 | |
dd1db3c2 YW |
3890 | if (firmware_usec > 0) |
3891 | size = strpcpyf(&p, size, "%s (firmware) + ", format_timespan(ts, sizeof(ts), firmware_usec, USEC_PER_MSEC)); | |
3892 | if (loader_usec > 0) | |
3893 | size = strpcpyf(&p, size, "%s (loader) + ", format_timespan(ts, sizeof(ts), loader_usec, USEC_PER_MSEC)); | |
3894 | ||
9f9f0342 | 3895 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3896 | |
9f9f0342 LP |
3897 | /* The initrd case on bare-metal*/ |
3898 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3899 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3900 | |
e12919e8 | 3901 | log_struct(LOG_INFO, |
2b044526 | 3902 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3903 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3904 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3905 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
dd1db3c2 YW |
3906 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3907 | buf, | |
e2cc6eca LP |
3908 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), |
3909 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
3910 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
a1230ff9 | 3911 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3912 | } else { |
9f9f0342 LP |
3913 | /* The initrd-less case on bare-metal*/ |
3914 | ||
3915 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3916 | initrd_usec = 0; |
3917 | ||
81270860 | 3918 | log_struct(LOG_INFO, |
2b044526 | 3919 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3920 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3921 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
dd1db3c2 YW |
3922 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.", |
3923 | buf, | |
e2cc6eca LP |
3924 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), |
3925 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
a1230ff9 | 3926 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC))); |
e12919e8 LP |
3927 | } |
3928 | } else { | |
4adf314b | 3929 | /* The container and --user case */ |
e12919e8 | 3930 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3931 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3932 | |
3933 | log_struct(LOG_INFO, | |
2b044526 | 3934 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3935 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca | 3936 | LOG_MESSAGE("Startup finished in %s.", |
a1230ff9 | 3937 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3938 | } |
b0c918b9 | 3939 | |
718db961 | 3940 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
3941 | |
3942 | sd_notifyf(false, | |
0c2826c6 ZJS |
3943 | m->ready_sent ? "STATUS=Startup finished in %s." |
3944 | : "READY=1\n" | |
3945 | "STATUS=Startup finished in %s.", | |
2fa4092c | 3946 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
0c2826c6 | 3947 | m->ready_sent = true; |
d8eb10d6 ZJS |
3948 | |
3949 | log_taint_string(m); | |
b0c918b9 LP |
3950 | } |
3951 | ||
4adf314b LP |
3952 | static void manager_send_ready(Manager *m) { |
3953 | assert(m); | |
3954 | ||
3955 | /* We send READY=1 on reaching basic.target only when running in --user mode. */ | |
3956 | if (!MANAGER_IS_USER(m) || m->ready_sent) | |
3957 | return; | |
3958 | ||
3959 | m->ready_sent = true; | |
3960 | ||
3961 | sd_notifyf(false, | |
3962 | "READY=1\n" | |
3963 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
3964 | } | |
3965 | ||
3966 | static void manager_check_basic_target(Manager *m) { | |
3967 | Unit *u; | |
3968 | ||
3969 | assert(m); | |
3970 | ||
3971 | /* Small shortcut */ | |
3972 | if (m->ready_sent && m->taint_logged) | |
3973 | return; | |
3974 | ||
3975 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3976 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3977 | return; | |
3978 | ||
3979 | /* For user managers, send out READY=1 as soon as we reach basic.target */ | |
3980 | manager_send_ready(m); | |
3981 | ||
3982 | /* Log the taint string as soon as we reach basic.target */ | |
3983 | log_taint_string(m); | |
3984 | } | |
3985 | ||
56dacdbc | 3986 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3987 | assert(m); |
3988 | ||
2c289ea8 | 3989 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3990 | return; |
3991 | ||
4259d202 LP |
3992 | /* Verify that we have entered the event loop already, and not left it again. */ |
3993 | if (!MANAGER_IS_RUNNING(m)) | |
9771b62d LP |
3994 | return; |
3995 | ||
4adf314b | 3996 | manager_check_basic_target(m); |
0c2826c6 | 3997 | |
56dacdbc | 3998 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3999 | if (m->jobs_in_progress_event_source) |
2ae56591 | 4000 | /* Ignore any failure, this is only for feedback */ |
1b4154a8 ZJS |
4001 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, |
4002 | manager_watch_jobs_next_time(m)); | |
56dacdbc ZJS |
4003 | return; |
4004 | } | |
4005 | ||
a4ac27c1 ZJS |
4006 | /* The jobs hashmap tends to grow a lot during boot, and then it's not reused until shutdown. Let's |
4007 | kill the hashmap if it is relatively large. */ | |
4008 | if (hashmap_buckets(m->jobs) > hashmap_size(m->units) / 10) | |
4009 | m->jobs = hashmap_free(m->jobs); | |
4010 | ||
7365a296 | 4011 | manager_flip_auto_status(m, false, "boot finished"); |
56dacdbc ZJS |
4012 | |
4013 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
4014 | manager_close_idle_pipe(m); |
4015 | ||
4016 | /* Turn off confirm spawn now */ | |
7d5ceb64 | 4017 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
4018 | |
4019 | /* No need to update ask password status when we're going non-interactive */ | |
4020 | manager_close_ask_password(m); | |
4021 | ||
4022 | /* This is no longer the first boot */ | |
4023 | manager_set_first_boot(m, false); | |
4024 | ||
49d5666c | 4025 | if (MANAGER_IS_FINISHED(m)) |
56dacdbc ZJS |
4026 | return; |
4027 | ||
9f9f0342 | 4028 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
4029 | |
4030 | manager_notify_finished(m); | |
4031 | ||
e7ab4d1a | 4032 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
4033 | } |
4034 | ||
64691d20 ZJS |
4035 | static bool generator_path_any(const char* const* paths) { |
4036 | char **path; | |
4037 | bool found = false; | |
4038 | ||
4039 | /* Optimize by skipping the whole process by not creating output directories | |
4040 | * if no generators are found. */ | |
4041 | STRV_FOREACH(path, (char**) paths) | |
4042 | if (access(*path, F_OK) == 0) | |
4043 | found = true; | |
4044 | else if (errno != ENOENT) | |
4045 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
4046 | ||
4047 | return found; | |
4048 | } | |
4049 | ||
64691d20 ZJS |
4050 | static int manager_run_environment_generators(Manager *m) { |
4051 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
cccf5703 | 4052 | _cleanup_strv_free_ char **paths = NULL; |
1ad6e8b3 LP |
4053 | void* args[] = { |
4054 | [STDOUT_GENERATE] = &tmp, | |
4055 | [STDOUT_COLLECT] = &tmp, | |
4056 | [STDOUT_CONSUME] = &m->transient_environment, | |
4057 | }; | |
e3b8d063 | 4058 | int r; |
64691d20 | 4059 | |
638cece4 | 4060 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
e0a3da1f ZJS |
4061 | return 0; |
4062 | ||
cccf5703 BB |
4063 | paths = env_generator_binary_paths(MANAGER_IS_SYSTEM(m)); |
4064 | if (!paths) | |
4065 | return log_oom(); | |
64691d20 | 4066 | |
cccf5703 | 4067 | if (!generator_path_any((const char* const*) paths)) |
64691d20 ZJS |
4068 | return 0; |
4069 | ||
e3b8d063 | 4070 | RUN_WITH_UMASK(0022) |
cccf5703 | 4071 | r = execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, gather_environment, |
4b05f0c9 | 4072 | args, NULL, m->transient_environment, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); |
e3b8d063 | 4073 | return r; |
64691d20 ZJS |
4074 | } |
4075 | ||
e801700e | 4076 | static int manager_run_generators(Manager *m) { |
f42348ac | 4077 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 4078 | const char *argv[5]; |
07719a21 | 4079 | int r; |
5a1e9937 LP |
4080 | |
4081 | assert(m); | |
4082 | ||
638cece4 | 4083 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
e0a3da1f ZJS |
4084 | return 0; |
4085 | ||
9183df70 | 4086 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
4087 | if (!paths) |
4088 | return log_oom(); | |
5a1e9937 | 4089 | |
64691d20 ZJS |
4090 | if (!generator_path_any((const char* const*) paths)) |
4091 | return 0; | |
5a1e9937 | 4092 | |
cd64fd56 | 4093 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
7eb4f326 LP |
4094 | if (r < 0) { |
4095 | log_error_errno(r, "Failed to create generator directories: %m"); | |
07719a21 | 4096 | goto finish; |
7eb4f326 | 4097 | } |
5a1e9937 | 4098 | |
83cc030f | 4099 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
4100 | argv[1] = m->lookup_paths.generator; |
4101 | argv[2] = m->lookup_paths.generator_early; | |
4102 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 4103 | argv[4] = NULL; |
5a1e9937 | 4104 | |
718db961 | 4105 | RUN_WITH_UMASK(0022) |
4b05f0c9 MK |
4106 | (void) execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, NULL, NULL, |
4107 | (char**) argv, m->transient_environment, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); | |
7eb4f326 LP |
4108 | |
4109 | r = 0; | |
5a1e9937 | 4110 | |
718db961 | 4111 | finish: |
cd64fd56 | 4112 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 4113 | return r; |
5a1e9937 LP |
4114 | } |
4115 | ||
1ad6e8b3 LP |
4116 | int manager_transient_environment_add(Manager *m, char **plus) { |
4117 | char **a; | |
4118 | ||
4119 | assert(m); | |
4120 | ||
4121 | if (strv_isempty(plus)) | |
4122 | return 0; | |
4123 | ||
4124 | a = strv_env_merge(2, m->transient_environment, plus); | |
4125 | if (!a) | |
2fbbbf9a | 4126 | return log_oom(); |
1ad6e8b3 LP |
4127 | |
4128 | sanitize_environment(a); | |
4129 | ||
4130 | return strv_free_and_replace(m->transient_environment, a); | |
4131 | } | |
4132 | ||
4133 | int manager_client_environment_modify( | |
4134 | Manager *m, | |
4135 | char **minus, | |
4136 | char **plus) { | |
4137 | ||
718db961 | 4138 | char **a = NULL, **b = NULL, **l; |
1ad6e8b3 | 4139 | |
97d0e5f8 | 4140 | assert(m); |
bcd8e6d1 | 4141 | |
1ad6e8b3 LP |
4142 | if (strv_isempty(minus) && strv_isempty(plus)) |
4143 | return 0; | |
4144 | ||
4145 | l = m->client_environment; | |
bcd8e6d1 | 4146 | |
718db961 LP |
4147 | if (!strv_isempty(minus)) { |
4148 | a = strv_env_delete(l, 1, minus); | |
4149 | if (!a) | |
4150 | return -ENOMEM; | |
4151 | ||
4152 | l = a; | |
4153 | } | |
4154 | ||
4155 | if (!strv_isempty(plus)) { | |
4156 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
4157 | if (!b) { |
4158 | strv_free(a); | |
718db961 | 4159 | return -ENOMEM; |
aa9f8a30 | 4160 | } |
bcd8e6d1 | 4161 | |
718db961 LP |
4162 | l = b; |
4163 | } | |
4164 | ||
1ad6e8b3 LP |
4165 | if (m->client_environment != l) |
4166 | strv_free(m->client_environment); | |
4167 | ||
718db961 LP |
4168 | if (a != l) |
4169 | strv_free(a); | |
4170 | if (b != l) | |
4171 | strv_free(b); | |
4172 | ||
1ad6e8b3 LP |
4173 | m->client_environment = sanitize_environment(l); |
4174 | return 0; | |
4175 | } | |
4176 | ||
4177 | int manager_get_effective_environment(Manager *m, char ***ret) { | |
4178 | char **l; | |
4179 | ||
4180 | assert(m); | |
4181 | assert(ret); | |
4182 | ||
4183 | l = strv_env_merge(2, m->transient_environment, m->client_environment); | |
4184 | if (!l) | |
4185 | return -ENOMEM; | |
f069efb4 | 4186 | |
1ad6e8b3 | 4187 | *ret = l; |
97d0e5f8 UTL |
4188 | return 0; |
4189 | } | |
4190 | ||
c93ff2e9 | 4191 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
c93ff2e9 FC |
4192 | assert(m); |
4193 | ||
5b10116e | 4194 | for (unsigned i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
4195 | m->rlimit[i] = mfree(m->rlimit[i]); |
4196 | ||
07719a21 LP |
4197 | if (!default_rlimit[i]) |
4198 | continue; | |
c93ff2e9 | 4199 | |
07719a21 LP |
4200 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
4201 | if (!m->rlimit[i]) | |
3ce40911 | 4202 | return log_oom(); |
c93ff2e9 FC |
4203 | } |
4204 | ||
4205 | return 0; | |
4206 | } | |
4207 | ||
8559b3b7 LP |
4208 | void manager_recheck_dbus(Manager *m) { |
4209 | assert(m); | |
4210 | ||
4211 | /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all | |
4212 | * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the | |
4213 | * connection of the API bus). That's because the system bus after all runs as service of the system instance, | |
4214 | * while in the user instance we can assume it's already there. */ | |
4215 | ||
31dc1ca3 LP |
4216 | if (MANAGER_IS_RELOADING(m)) |
4217 | return; /* don't check while we are reloading… */ | |
4218 | ||
8559b3b7 LP |
4219 | if (manager_dbus_is_running(m, false)) { |
4220 | (void) bus_init_api(m); | |
4221 | ||
4222 | if (MANAGER_IS_SYSTEM(m)) | |
4223 | (void) bus_init_system(m); | |
4224 | } else { | |
4225 | (void) bus_done_api(m); | |
4226 | ||
4227 | if (MANAGER_IS_SYSTEM(m)) | |
4228 | (void) bus_done_system(m); | |
4229 | } | |
4230 | } | |
4231 | ||
d075092f | 4232 | static bool manager_journal_is_running(Manager *m) { |
f1dd0c3f LP |
4233 | Unit *u; |
4234 | ||
4235 | assert(m); | |
4236 | ||
638cece4 | 4237 | if (MANAGER_IS_TEST_RUN(m)) |
7d814a19 LP |
4238 | return false; |
4239 | ||
d075092f | 4240 | /* If we are the user manager we can safely assume that the journal is up */ |
463d0d15 | 4241 | if (!MANAGER_IS_SYSTEM(m)) |
d075092f | 4242 | return true; |
f1dd0c3f | 4243 | |
d075092f | 4244 | /* Check that the socket is not only up, but in RUNNING state */ |
731a676c | 4245 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
d075092f LP |
4246 | if (!u) |
4247 | return false; | |
4248 | if (SOCKET(u)->state != SOCKET_RUNNING) | |
4249 | return false; | |
f1dd0c3f | 4250 | |
d075092f | 4251 | /* Similar, check if the daemon itself is fully up, too */ |
731a676c | 4252 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
d075092f LP |
4253 | if (!u) |
4254 | return false; | |
217677ab | 4255 | if (!IN_SET(SERVICE(u)->state, SERVICE_RELOAD, SERVICE_RUNNING)) |
d075092f LP |
4256 | return false; |
4257 | ||
4258 | return true; | |
4259 | } | |
4260 | ||
6123dfaa ZJS |
4261 | void disable_printk_ratelimit(void) { |
4262 | /* Disable kernel's printk ratelimit. | |
4263 | * | |
4264 | * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging | |
4265 | * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line | |
4266 | * setting takes precedence. */ | |
4267 | int r; | |
4268 | ||
4269 | r = sysctl_write("kernel/printk_devkmsg", "on"); | |
4270 | if (r < 0) | |
4271 | log_debug_errno(r, "Failed to set sysctl kernel.printk_devkmsg=on: %m"); | |
4272 | } | |
4273 | ||
d075092f LP |
4274 | void manager_recheck_journal(Manager *m) { |
4275 | ||
4276 | assert(m); | |
4277 | ||
4278 | /* Don't bother with this unless we are in the special situation of being PID 1 */ | |
4279 | if (getpid_cached() != 1) | |
731a676c | 4280 | return; |
f1dd0c3f | 4281 | |
31dc1ca3 LP |
4282 | /* Don't check this while we are reloading, things might still change */ |
4283 | if (MANAGER_IS_RELOADING(m)) | |
4284 | return; | |
4285 | ||
cedf5088 LP |
4286 | /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the |
4287 | * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger | |
4288 | * an activation ourselves we can't fulfill. */ | |
4289 | log_set_prohibit_ipc(!manager_journal_is_running(m)); | |
cc2b9e6b | 4290 | log_open(); |
f1dd0c3f LP |
4291 | } |
4292 | ||
44a41954 FB |
4293 | static ShowStatus manager_get_show_status(Manager *m) { |
4294 | assert(m); | |
4295 | ||
4296 | if (MANAGER_IS_USER(m)) | |
4297 | return _SHOW_STATUS_INVALID; | |
4298 | ||
4299 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) | |
4300 | return m->show_status_overridden; | |
4301 | ||
4302 | return m->show_status; | |
4303 | } | |
4304 | ||
4305 | bool manager_get_show_status_on(Manager *m) { | |
4306 | assert(m); | |
4307 | ||
4308 | return show_status_on(manager_get_show_status(m)); | |
4309 | } | |
b309078a | 4310 | |
3ceb3471 FB |
4311 | static void set_show_status_marker(bool b) { |
4312 | if (b) | |
4313 | (void) touch("/run/systemd/show-status"); | |
4314 | else | |
4315 | (void) unlink("/run/systemd/show-status"); | |
4316 | } | |
4317 | ||
44a41954 | 4318 | void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) { |
27d340c7 | 4319 | assert(m); |
44a41954 | 4320 | assert(reason); |
0d066dd1 | 4321 | assert(mode >= 0 && mode < _SHOW_STATUS_MAX); |
27d340c7 | 4322 | |
44a41954 | 4323 | if (MANAGER_IS_USER(m)) |
27d340c7 LP |
4324 | return; |
4325 | ||
ef15d3e1 ZJS |
4326 | if (mode == m->show_status) |
4327 | return; | |
4328 | ||
44a41954 FB |
4329 | if (m->show_status_overridden == _SHOW_STATUS_INVALID) { |
4330 | bool enabled; | |
4331 | ||
4332 | enabled = show_status_on(mode); | |
4333 | log_debug("%s (%s) showing of status (%s).", | |
4334 | enabled ? "Enabling" : "Disabling", | |
4335 | strna(show_status_to_string(mode)), | |
4336 | reason); | |
4337 | ||
3ceb3471 | 4338 | set_show_status_marker(enabled); |
44a41954 FB |
4339 | } |
4340 | ||
4341 | m->show_status = mode; | |
4342 | } | |
4343 | ||
43bba15a | 4344 | void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason) { |
44a41954 FB |
4345 | assert(m); |
4346 | assert(mode < _SHOW_STATUS_MAX); | |
4347 | ||
4348 | if (MANAGER_IS_USER(m)) | |
4349 | return; | |
4350 | ||
4351 | if (mode == m->show_status_overridden) | |
4352 | return; | |
4353 | ||
4354 | m->show_status_overridden = mode; | |
4355 | ||
4356 | if (mode == _SHOW_STATUS_INVALID) | |
4357 | mode = m->show_status; | |
4358 | ||
ef15d3e1 | 4359 | log_debug("%s (%s) showing of status (%s).", |
44a41954 | 4360 | m->show_status_overridden != _SHOW_STATUS_INVALID ? "Overriding" : "Restoring", |
ef15d3e1 ZJS |
4361 | strna(show_status_to_string(mode)), |
4362 | reason); | |
b309078a | 4363 | |
3ceb3471 | 4364 | set_show_status_marker(show_status_on(mode)); |
27d340c7 LP |
4365 | } |
4366 | ||
7d5ceb64 FB |
4367 | const char *manager_get_confirm_spawn(Manager *m) { |
4368 | static int last_errno = 0; | |
7d5ceb64 FB |
4369 | struct stat st; |
4370 | int r; | |
4371 | ||
ea758432 LP |
4372 | assert(m); |
4373 | ||
7d5ceb64 FB |
4374 | /* Here's the deal: we want to test the validity of the console but don't want |
4375 | * PID1 to go through the whole console process which might block. But we also | |
4376 | * want to warn the user only once if something is wrong with the console so we | |
4377 | * cannot do the sanity checks after spawning our children. So here we simply do | |
4378 | * really basic tests to hopefully trap common errors. | |
4379 | * | |
4380 | * If the console suddenly disappear at the time our children will really it | |
4381 | * then they will simply fail to acquire it and a positive answer will be | |
2aed63f4 | 4382 | * assumed. New children will fall back to /dev/console though. |
7d5ceb64 FB |
4383 | * |
4384 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
4385 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
2aed63f4 | 4386 | * reason the configured console is not ready, we fall back to the default |
7d5ceb64 FB |
4387 | * console. */ |
4388 | ||
ea758432 LP |
4389 | if (!m->confirm_spawn || path_equal(m->confirm_spawn, "/dev/console")) |
4390 | return m->confirm_spawn; | |
7d5ceb64 | 4391 | |
ea758432 LP |
4392 | if (stat(m->confirm_spawn, &st) < 0) { |
4393 | r = -errno; | |
7d5ceb64 | 4394 | goto fail; |
ea758432 | 4395 | } |
7d5ceb64 FB |
4396 | |
4397 | if (!S_ISCHR(st.st_mode)) { | |
ea758432 | 4398 | r = -ENOTTY; |
7d5ceb64 FB |
4399 | goto fail; |
4400 | } | |
4401 | ||
4402 | last_errno = 0; | |
ea758432 LP |
4403 | return m->confirm_spawn; |
4404 | ||
7d5ceb64 | 4405 | fail: |
ea758432 LP |
4406 | if (last_errno != r) |
4407 | last_errno = log_warning_errno(r, "Failed to open %s, using default console: %m", m->confirm_spawn); | |
4408 | ||
7d5ceb64 FB |
4409 | return "/dev/console"; |
4410 | } | |
4411 | ||
e2680723 LP |
4412 | void manager_set_first_boot(Manager *m, bool b) { |
4413 | assert(m); | |
4414 | ||
463d0d15 | 4415 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
4416 | return; |
4417 | ||
ae2a2c53 LP |
4418 | if (m->first_boot != (int) b) { |
4419 | if (b) | |
4420 | (void) touch("/run/systemd/first-boot"); | |
4421 | else | |
4422 | (void) unlink("/run/systemd/first-boot"); | |
4423 | } | |
e2680723 | 4424 | |
ae2a2c53 | 4425 | m->first_boot = b; |
e2680723 LP |
4426 | } |
4427 | ||
b0eb2944 FB |
4428 | void manager_disable_confirm_spawn(void) { |
4429 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
4430 | } | |
4431 | ||
4432 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
4433 | if (!m->confirm_spawn) | |
4434 | return true; | |
4435 | ||
4436 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
4437 | } | |
4438 | ||
0d6d3cf0 FB |
4439 | static bool manager_should_show_status(Manager *m, StatusType type) { |
4440 | assert(m); | |
4441 | ||
4442 | if (!MANAGER_IS_SYSTEM(m)) | |
4443 | return false; | |
4444 | ||
4445 | if (m->no_console_output) | |
4446 | return false; | |
4447 | ||
4448 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) | |
4449 | return false; | |
4450 | ||
4451 | /* If we cannot find out the status properly, just proceed. */ | |
4452 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) | |
4453 | return false; | |
4454 | ||
4455 | if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO) | |
4456 | return true; | |
4457 | ||
44a41954 | 4458 | return manager_get_show_status_on(m); |
0d6d3cf0 FB |
4459 | } |
4460 | ||
127d5fd1 | 4461 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
4462 | va_list ap; |
4463 | ||
cb6531be ZJS |
4464 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
4465 | ||
0d6d3cf0 | 4466 | if (m && !manager_should_show_status(m, type)) |
25cee550 MS |
4467 | return; |
4468 | ||
03b717a3 MS |
4469 | /* XXX We should totally drop the check for ephemeral here |
4470 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 4471 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
4472 | return; |
4473 | ||
25cee550 | 4474 | va_start(ap, format); |
a885727a | 4475 | status_vprintf(status, SHOW_STATUS_ELLIPSIZE|(type == STATUS_TYPE_EPHEMERAL ? SHOW_STATUS_EPHEMERAL : 0), format, ap); |
25cee550 MS |
4476 | va_end(ap); |
4477 | } | |
4478 | ||
a57f7e2c LP |
4479 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
4480 | char p[strlen(path)+1]; | |
4481 | ||
4482 | assert(m); | |
4483 | assert(path); | |
4484 | ||
4485 | strcpy(p, path); | |
858d36c1 | 4486 | path_simplify(p, false); |
a57f7e2c LP |
4487 | |
4488 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
4489 | } | |
e66cf1a3 | 4490 | |
5269eb6b | 4491 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 4492 | unsigned size; |
5269eb6b | 4493 | int r; |
03455c28 LDM |
4494 | |
4495 | assert(m); | |
4496 | assert(u->manager == m); | |
4497 | ||
4498 | size = set_size(m->failed_units); | |
4499 | ||
9fff8981 | 4500 | if (failed) { |
de7fef4b | 4501 | r = set_ensure_put(&m->failed_units, NULL, u); |
5269eb6b LP |
4502 | if (r < 0) |
4503 | return log_oom(); | |
9fff8981 | 4504 | } else |
5269eb6b | 4505 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
4506 | |
4507 | if (set_size(m->failed_units) != size) | |
4508 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
4509 | |
4510 | return 0; | |
03455c28 LDM |
4511 | } |
4512 | ||
f755e3b7 LP |
4513 | ManagerState manager_state(Manager *m) { |
4514 | Unit *u; | |
4515 | ||
4516 | assert(m); | |
4517 | ||
f9d29f6d JB |
4518 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
4519 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
4520 | if (u && unit_active_or_pending(u)) | |
4521 | return MANAGER_STOPPING; | |
4522 | ||
f755e3b7 | 4523 | /* Did we ever finish booting? If not then we are still starting up */ |
49d5666c | 4524 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
4525 | |
4526 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
4527 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
4528 | return MANAGER_INITIALIZING; | |
4529 | ||
f755e3b7 | 4530 | return MANAGER_STARTING; |
d81afec1 | 4531 | } |
f755e3b7 | 4532 | |
45a7b16b LP |
4533 | if (MANAGER_IS_SYSTEM(m)) { |
4534 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
4535 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
4536 | if (u && unit_active_or_pending(u)) | |
4537 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 4538 | |
45a7b16b LP |
4539 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
4540 | if (u && unit_active_or_pending(u)) | |
4541 | return MANAGER_MAINTENANCE; | |
4542 | } | |
f755e3b7 LP |
4543 | |
4544 | /* Are there any failed units? If so, we are in degraded mode */ | |
4545 | if (set_size(m->failed_units) > 0) | |
4546 | return MANAGER_DEGRADED; | |
4547 | ||
4548 | return MANAGER_RUNNING; | |
4549 | } | |
4550 | ||
00d9ef85 LP |
4551 | static void manager_unref_uid_internal( |
4552 | Manager *m, | |
4553 | Hashmap **uid_refs, | |
4554 | uid_t uid, | |
4555 | bool destroy_now, | |
4556 | int (*_clean_ipc)(uid_t uid)) { | |
4557 | ||
4558 | uint32_t c, n; | |
4559 | ||
4560 | assert(m); | |
4561 | assert(uid_refs); | |
4562 | assert(uid_is_valid(uid)); | |
4563 | assert(_clean_ipc); | |
4564 | ||
4565 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
4566 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
4567 | * | |
4568 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
4569 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
4570 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
4571 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
4572 | ||
4573 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4574 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4575 | ||
4576 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4577 | return; | |
4578 | ||
4579 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4580 | ||
4581 | n = c & ~DESTROY_IPC_FLAG; | |
4582 | assert(n > 0); | |
4583 | n--; | |
4584 | ||
4585 | if (destroy_now && n == 0) { | |
4586 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
4587 | ||
4588 | if (c & DESTROY_IPC_FLAG) { | |
4589 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
4590 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4591 | uid); | |
4592 | (void) _clean_ipc(uid); | |
4593 | } | |
4594 | } else { | |
4595 | c = n | (c & DESTROY_IPC_FLAG); | |
4596 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
4597 | } | |
4598 | } | |
4599 | ||
4600 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
4601 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
4602 | } | |
4603 | ||
4604 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
4605 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
4606 | } | |
4607 | ||
4608 | static int manager_ref_uid_internal( | |
4609 | Manager *m, | |
4610 | Hashmap **uid_refs, | |
4611 | uid_t uid, | |
4612 | bool clean_ipc) { | |
4613 | ||
4614 | uint32_t c, n; | |
4615 | int r; | |
4616 | ||
4617 | assert(m); | |
4618 | assert(uid_refs); | |
4619 | assert(uid_is_valid(uid)); | |
4620 | ||
4621 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
4622 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
4623 | ||
4624 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4625 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4626 | ||
4627 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4628 | return 0; | |
4629 | ||
4630 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
4631 | if (r < 0) | |
4632 | return r; | |
4633 | ||
4634 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4635 | ||
4636 | n = c & ~DESTROY_IPC_FLAG; | |
4637 | n++; | |
4638 | ||
4639 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
4640 | return -EOVERFLOW; | |
4641 | ||
4642 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
4643 | ||
4644 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
4645 | } | |
4646 | ||
4647 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
4648 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
4649 | } | |
4650 | ||
4651 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
4652 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
4653 | } | |
4654 | ||
4655 | static void manager_vacuum_uid_refs_internal( | |
4656 | Manager *m, | |
4657 | Hashmap **uid_refs, | |
4658 | int (*_clean_ipc)(uid_t uid)) { | |
4659 | ||
4660 | Iterator i; | |
4661 | void *p, *k; | |
4662 | ||
4663 | assert(m); | |
4664 | assert(uid_refs); | |
4665 | assert(_clean_ipc); | |
4666 | ||
4667 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
4668 | uint32_t c, n; | |
4669 | uid_t uid; | |
4670 | ||
4671 | uid = PTR_TO_UID(k); | |
4672 | c = PTR_TO_UINT32(p); | |
4673 | ||
4674 | n = c & ~DESTROY_IPC_FLAG; | |
4675 | if (n > 0) | |
4676 | continue; | |
4677 | ||
4678 | if (c & DESTROY_IPC_FLAG) { | |
4679 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
4680 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4681 | uid); | |
4682 | (void) _clean_ipc(uid); | |
4683 | } | |
4684 | ||
4685 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
4686 | } | |
4687 | } | |
4688 | ||
06a4eb07 | 4689 | static void manager_vacuum_uid_refs(Manager *m) { |
00d9ef85 LP |
4690 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); |
4691 | } | |
4692 | ||
06a4eb07 | 4693 | static void manager_vacuum_gid_refs(Manager *m) { |
00d9ef85 LP |
4694 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); |
4695 | } | |
4696 | ||
06a4eb07 FB |
4697 | static void manager_vacuum(Manager *m) { |
4698 | assert(m); | |
4699 | ||
4700 | /* Release any dynamic users no longer referenced */ | |
4701 | dynamic_user_vacuum(m, true); | |
4702 | ||
4703 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ | |
4704 | manager_vacuum_uid_refs(m); | |
4705 | manager_vacuum_gid_refs(m); | |
4706 | ||
4707 | /* Release any runtimes no longer referenced */ | |
4708 | exec_runtime_vacuum(m); | |
4709 | } | |
4710 | ||
00d9ef85 LP |
4711 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
4712 | struct buffer { | |
4713 | uid_t uid; | |
4714 | gid_t gid; | |
4715 | char unit_name[UNIT_NAME_MAX+1]; | |
4716 | } _packed_ buffer; | |
4717 | ||
4718 | Manager *m = userdata; | |
4719 | ssize_t l; | |
4720 | size_t n; | |
4721 | Unit *u; | |
4722 | ||
4723 | assert_se(source); | |
4724 | assert_se(m); | |
4725 | ||
4726 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
4727 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
4728 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
4729 | ||
4730 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
4731 | if (l < 0) { | |
4c701096 | 4732 | if (IN_SET(errno, EINTR, EAGAIN)) |
00d9ef85 LP |
4733 | return 0; |
4734 | ||
4735 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
4736 | } | |
4737 | ||
4738 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
4739 | log_warning("Received too short user lookup message, ignoring."); | |
4740 | return 0; | |
4741 | } | |
4742 | ||
4743 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
4744 | log_warning("Received too long user lookup message, ignoring."); | |
4745 | return 0; | |
4746 | } | |
4747 | ||
4748 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
4749 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
4750 | return 0; | |
4751 | } | |
4752 | ||
4753 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
4754 | if (memchr(buffer.unit_name, 0, n)) { | |
4755 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
4756 | return 0; | |
4757 | } | |
4758 | ||
4759 | buffer.unit_name[n] = 0; | |
4760 | u = manager_get_unit(m, buffer.unit_name); | |
4761 | if (!u) { | |
4762 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
4763 | return 0; | |
4764 | } | |
4765 | ||
4766 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
4767 | ||
4768 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
4769 | return 0; | |
4770 | } | |
4771 | ||
af6b0ecc | 4772 | char *manager_taint_string(Manager *m) { |
90d7464d | 4773 | _cleanup_free_ char *destination = NULL, *overflowuid = NULL, *overflowgid = NULL; |
af6b0ecc LP |
4774 | char *buf, *e; |
4775 | int r; | |
4776 | ||
198ce932 ZJS |
4777 | /* Returns a "taint string", e.g. "local-hwclock:var-run-bad". |
4778 | * Only things that are detected at runtime should be tagged | |
4779 | * here. For stuff that is set during compilation, emit a warning | |
4780 | * in the configuration phase. */ | |
4781 | ||
af6b0ecc LP |
4782 | assert(m); |
4783 | ||
4784 | buf = new(char, sizeof("split-usr:" | |
4785 | "cgroups-missing:" | |
4786 | "local-hwclock:" | |
4787 | "var-run-bad:" | |
90d7464d LP |
4788 | "overflowuid-not-65534:" |
4789 | "overflowgid-not-65534:")); | |
af6b0ecc LP |
4790 | if (!buf) |
4791 | return NULL; | |
4792 | ||
4793 | e = buf; | |
0fd402b0 | 4794 | buf[0] = 0; |
af6b0ecc LP |
4795 | |
4796 | if (m->taint_usr) | |
4797 | e = stpcpy(e, "split-usr:"); | |
4798 | ||
4799 | if (access("/proc/cgroups", F_OK) < 0) | |
4800 | e = stpcpy(e, "cgroups-missing:"); | |
4801 | ||
4802 | if (clock_is_localtime(NULL) > 0) | |
4803 | e = stpcpy(e, "local-hwclock:"); | |
4804 | ||
4805 | r = readlink_malloc("/var/run", &destination); | |
4806 | if (r < 0 || !PATH_IN_SET(destination, "../run", "/run")) | |
4807 | e = stpcpy(e, "var-run-bad:"); | |
4808 | ||
90d7464d LP |
4809 | r = read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid); |
4810 | if (r >= 0 && !streq(overflowuid, "65534")) | |
4811 | e = stpcpy(e, "overflowuid-not-65534:"); | |
4812 | ||
4813 | r = read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid); | |
4814 | if (r >= 0 && !streq(overflowgid, "65534")) | |
4815 | e = stpcpy(e, "overflowgid-not-65534:"); | |
4816 | ||
af6b0ecc LP |
4817 | /* remove the last ':' */ |
4818 | if (e != buf) | |
4819 | e[-1] = 0; | |
4820 | ||
4821 | return buf; | |
4822 | } | |
4823 | ||
adefcf28 LP |
4824 | void manager_ref_console(Manager *m) { |
4825 | assert(m); | |
4826 | ||
4827 | m->n_on_console++; | |
4828 | } | |
4829 | ||
4830 | void manager_unref_console(Manager *m) { | |
4831 | ||
4832 | assert(m->n_on_console > 0); | |
4833 | m->n_on_console--; | |
4834 | ||
4835 | if (m->n_on_console == 0) | |
4836 | m->no_console_output = false; /* unset no_console_output flag, since the console is definitely free now */ | |
4837 | } | |
4838 | ||
a6ecbf83 FB |
4839 | void manager_override_log_level(Manager *m, int level) { |
4840 | _cleanup_free_ char *s = NULL; | |
4841 | assert(m); | |
4842 | ||
4843 | if (!m->log_level_overridden) { | |
4844 | m->original_log_level = log_get_max_level(); | |
4845 | m->log_level_overridden = true; | |
4846 | } | |
4847 | ||
4848 | (void) log_level_to_string_alloc(level, &s); | |
4849 | log_info("Setting log level to %s.", strna(s)); | |
4850 | ||
4851 | log_set_max_level(level); | |
4852 | } | |
4853 | ||
4854 | void manager_restore_original_log_level(Manager *m) { | |
4855 | _cleanup_free_ char *s = NULL; | |
4856 | assert(m); | |
4857 | ||
4858 | if (!m->log_level_overridden) | |
4859 | return; | |
4860 | ||
4861 | (void) log_level_to_string_alloc(m->original_log_level, &s); | |
4862 | log_info("Restoring log level to original (%s).", strna(s)); | |
4863 | ||
4864 | log_set_max_level(m->original_log_level); | |
4865 | m->log_level_overridden = false; | |
4866 | } | |
4867 | ||
bda7d78b FB |
4868 | void manager_override_log_target(Manager *m, LogTarget target) { |
4869 | assert(m); | |
4870 | ||
4871 | if (!m->log_target_overridden) { | |
4872 | m->original_log_target = log_get_target(); | |
4873 | m->log_target_overridden = true; | |
4874 | } | |
4875 | ||
4876 | log_info("Setting log target to %s.", log_target_to_string(target)); | |
4877 | log_set_target(target); | |
4878 | } | |
4879 | ||
4880 | void manager_restore_original_log_target(Manager *m) { | |
4881 | assert(m); | |
4882 | ||
4883 | if (!m->log_target_overridden) | |
4884 | return; | |
4885 | ||
4886 | log_info("Restoring log target to original %s.", log_target_to_string(m->original_log_target)); | |
4887 | ||
4888 | log_set_target(m->original_log_target); | |
4889 | m->log_target_overridden = false; | |
4890 | } | |
4891 | ||
d4ee7bd8 YW |
4892 | ManagerTimestamp manager_timestamp_initrd_mangle(ManagerTimestamp s) { |
4893 | if (in_initrd() && | |
4894 | s >= MANAGER_TIMESTAMP_SECURITY_START && | |
4895 | s <= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH) | |
4896 | return s - MANAGER_TIMESTAMP_SECURITY_START + MANAGER_TIMESTAMP_INITRD_SECURITY_START; | |
4897 | return s; | |
4898 | } | |
4899 | ||
f755e3b7 | 4900 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 4901 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
4902 | [MANAGER_STARTING] = "starting", |
4903 | [MANAGER_RUNNING] = "running", | |
4904 | [MANAGER_DEGRADED] = "degraded", | |
4905 | [MANAGER_MAINTENANCE] = "maintenance", | |
4906 | [MANAGER_STOPPING] = "stopping", | |
4907 | }; | |
4908 | ||
4909 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
4910 | |
4911 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
4912 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", | |
4913 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
4914 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
4915 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
4916 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
4917 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
4918 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
4919 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
4920 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
4921 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
4922 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
4923 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
d4ee7bd8 YW |
4924 | [MANAGER_TIMESTAMP_INITRD_SECURITY_START] = "initrd-security-start", |
4925 | [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH] = "initrd-security-finish", | |
4926 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_START] = "initrd-generators-start", | |
4927 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH] = "initrd-generators-finish", | |
4928 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START] = "initrd-units-load-start", | |
4929 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH] = "initrd-units-load-finish", | |
9f9f0342 LP |
4930 | }; |
4931 | ||
4932 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); | |
afcfaa69 LP |
4933 | |
4934 | static const char* const oom_policy_table[_OOM_POLICY_MAX] = { | |
4935 | [OOM_CONTINUE] = "continue", | |
4936 | [OOM_STOP] = "stop", | |
4937 | [OOM_KILL] = "kill", | |
4938 | }; | |
4939 | ||
4940 | DEFINE_STRING_TABLE_LOOKUP(oom_policy, OOMPolicy); |