]>
Commit | Line | Data |
---|---|---|
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 | 201 | Job *j; |
03b717a3 MS |
202 | unsigned counter = 0, print_nr; |
203 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
204 | unsigned cylon_pos; | |
8bb310c3 ZJS |
205 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
206 | uint64_t x; | |
03b717a3 | 207 | |
718db961 | 208 | assert(m); |
9c3349e2 | 209 | assert(m->n_running_jobs > 0); |
718db961 | 210 | |
7365a296 | 211 | manager_flip_auto_status(m, true, "delay"); |
d450b6f2 | 212 | |
03b717a3 MS |
213 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
214 | ||
90e74a66 | 215 | HASHMAP_FOREACH(j, m->jobs) |
03b717a3 MS |
216 | if (j->state == JOB_RUNNING && counter++ == print_nr) |
217 | break; | |
218 | ||
e970a72e MS |
219 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
220 | * so the above loop must have succeeded in finding j. */ | |
221 | assert(counter == print_nr + 1); | |
51d122af | 222 | assert(j); |
5a82a91a | 223 | |
03b717a3 MS |
224 | cylon_pos = m->jobs_in_progress_iteration % 14; |
225 | if (cylon_pos >= 8) | |
226 | cylon_pos = 14 - cylon_pos; | |
227 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
228 | ||
8bb310c3 ZJS |
229 | m->jobs_in_progress_iteration++; |
230 | ||
d6483ba7 ZJS |
231 | if (m->n_running_jobs > 1) { |
232 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
233 | job_of_n = NULL; | |
234 | } | |
03b717a3 | 235 | |
8bb310c3 ZJS |
236 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
237 | if (job_get_timeout(j, &x) > 0) | |
238 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
239 | ||
127d5fd1 | 240 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
241 | "%sA %s job is running for %s (%s / %s)", |
242 | strempty(job_of_n), | |
243 | job_type_to_string(j->type), | |
2a8f53c6 | 244 | unit_status_string(j->unit), |
8bb310c3 | 245 | time, limit); |
03b717a3 MS |
246 | } |
247 | ||
e46b13c8 ZJS |
248 | static int have_ask_password(void) { |
249 | _cleanup_closedir_ DIR *dir; | |
8fb3f009 | 250 | struct dirent *de; |
e46b13c8 ZJS |
251 | |
252 | dir = opendir("/run/systemd/ask-password"); | |
253 | if (!dir) { | |
254 | if (errno == ENOENT) | |
255 | return false; | |
256 | else | |
257 | return -errno; | |
258 | } | |
259 | ||
8fb3f009 | 260 | FOREACH_DIRENT_ALL(de, dir, return -errno) { |
e46b13c8 ZJS |
261 | if (startswith(de->d_name, "ask.")) |
262 | return true; | |
263 | } | |
8fb3f009 | 264 | return false; |
e46b13c8 ZJS |
265 | } |
266 | ||
267 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
268 | int fd, uint32_t revents, void *userdata) { | |
269 | Manager *m = userdata; | |
270 | ||
271 | assert(m); | |
272 | ||
665dfe93 | 273 | (void) flush_fd(fd); |
e46b13c8 ZJS |
274 | |
275 | m->have_ask_password = have_ask_password(); | |
276 | if (m->have_ask_password < 0) | |
277 | /* Log error but continue. Negative have_ask_password | |
278 | * is treated as unknown status. */ | |
c33b3297 | 279 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
280 | |
281 | return 0; | |
282 | } | |
283 | ||
284 | static void manager_close_ask_password(Manager *m) { | |
285 | assert(m); | |
286 | ||
e46b13c8 | 287 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 288 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
289 | m->have_ask_password = -EINVAL; |
290 | } | |
291 | ||
292 | static int manager_check_ask_password(Manager *m) { | |
293 | int r; | |
294 | ||
295 | assert(m); | |
296 | ||
297 | if (!m->ask_password_event_source) { | |
298 | assert(m->ask_password_inotify_fd < 0); | |
299 | ||
17e4b070 | 300 | (void) mkdir_p_label("/run/systemd/ask-password", 0755); |
e46b13c8 ZJS |
301 | |
302 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 | 303 | if (m->ask_password_inotify_fd < 0) |
330b8fb3 | 304 | return log_error_errno(errno, "Failed to create inotify object: %m"); |
e46b13c8 | 305 | |
27c3112d FB |
306 | r = inotify_add_watch_and_warn(m->ask_password_inotify_fd, |
307 | "/run/systemd/ask-password", | |
308 | IN_CREATE|IN_DELETE|IN_MOVE); | |
309 | if (r < 0) { | |
e46b13c8 | 310 | manager_close_ask_password(m); |
27c3112d | 311 | return r; |
e46b13c8 ZJS |
312 | } |
313 | ||
314 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
315 | m->ask_password_inotify_fd, EPOLLIN, | |
316 | manager_dispatch_ask_password_fd, m); | |
317 | if (r < 0) { | |
df3d3bdf | 318 | log_error_errno(r, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 | 319 | manager_close_ask_password(m); |
df3d3bdf | 320 | return r; |
e46b13c8 ZJS |
321 | } |
322 | ||
7dfbe2e3 TG |
323 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
324 | ||
e46b13c8 ZJS |
325 | /* Queries might have been added meanwhile... */ |
326 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
327 | m->ask_password_inotify_fd, EPOLLIN, m); | |
328 | } | |
329 | ||
330 | return m->have_ask_password; | |
331 | } | |
332 | ||
31a7eb86 | 333 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
334 | int r; |
335 | ||
718db961 LP |
336 | assert(m); |
337 | ||
338 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
339 | return 0; |
340 | ||
341 | if (m->idle_pipe[2] < 0) | |
342 | return 0; | |
343 | ||
151b9b96 | 344 | 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 |
345 | if (r < 0) |
346 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 347 | |
7dfbe2e3 TG |
348 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
349 | ||
31a7eb86 | 350 | return 0; |
31a7eb86 ZJS |
351 | } |
352 | ||
718db961 LP |
353 | static void manager_close_idle_pipe(Manager *m) { |
354 | assert(m); | |
31a7eb86 | 355 | |
cd72bd8a LP |
356 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
357 | ||
3d94f76c LP |
358 | safe_close_pair(m->idle_pipe); |
359 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
360 | } |
361 | ||
8742514c | 362 | static int manager_setup_time_change(Manager *m) { |
718db961 | 363 | int r; |
b92bea5d | 364 | |
718db961 | 365 | assert(m); |
8742514c | 366 | |
638cece4 | 367 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
368 | return 0; |
369 | ||
7feedd18 LP |
370 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); |
371 | m->time_change_fd = safe_close(m->time_change_fd); | |
372 | ||
4f811d27 | 373 | m->time_change_fd = time_change_fd(); |
4a62c710 | 374 | if (m->time_change_fd < 0) |
4f811d27 | 375 | return log_error_errno(m->time_change_fd, "Failed to create timer change timer fd: %m"); |
8742514c | 376 | |
151b9b96 | 377 | 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 |
378 | if (r < 0) |
379 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 380 | |
a5cc7e5a LP |
381 | /* Schedule this slightly earlier than the .timer event sources */ |
382 | r = sd_event_source_set_priority(m->time_change_event_source, SD_EVENT_PRIORITY_NORMAL-1); | |
383 | if (r < 0) | |
384 | return log_error_errno(r, "Failed to set priority of time change event sources: %m"); | |
385 | ||
7dfbe2e3 TG |
386 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
387 | ||
8742514c LP |
388 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
bbf5fd8e LP |
393 | static int manager_read_timezone_stat(Manager *m) { |
394 | struct stat st; | |
395 | bool changed; | |
396 | ||
397 | assert(m); | |
398 | ||
399 | /* Read the current stat() data of /etc/localtime so that we detect changes */ | |
400 | if (lstat("/etc/localtime", &st) < 0) { | |
401 | log_debug_errno(errno, "Failed to stat /etc/localtime, ignoring: %m"); | |
402 | changed = m->etc_localtime_accessible; | |
403 | m->etc_localtime_accessible = false; | |
404 | } else { | |
405 | usec_t k; | |
406 | ||
407 | k = timespec_load(&st.st_mtim); | |
408 | changed = !m->etc_localtime_accessible || k != m->etc_localtime_mtime; | |
409 | ||
410 | m->etc_localtime_mtime = k; | |
411 | m->etc_localtime_accessible = true; | |
412 | } | |
413 | ||
414 | return changed; | |
415 | } | |
416 | ||
417 | static int manager_setup_timezone_change(Manager *m) { | |
a5cc7e5a | 418 | _cleanup_(sd_event_source_unrefp) sd_event_source *new_event = NULL; |
bbf5fd8e LP |
419 | int r; |
420 | ||
421 | assert(m); | |
422 | ||
638cece4 | 423 | if (MANAGER_IS_TEST_RUN(m)) |
bbf5fd8e LP |
424 | return 0; |
425 | ||
426 | /* We watch /etc/localtime for three events: change of the link count (which might mean removal from /etc even | |
427 | * though another link might be kept), renames, and file close operations after writing. Note we don't bother | |
428 | * with IN_DELETE_SELF, as that would just report when the inode is removed entirely, i.e. after the link count | |
429 | * went to zero and all fds to it are closed. | |
430 | * | |
431 | * Note that we never follow symlinks here. This is a simplification, but should cover almost all cases | |
432 | * correctly. | |
433 | * | |
434 | * Note that we create the new event source first here, before releasing the old one. This should optimize | |
435 | * behaviour as this way sd-event can reuse the old watch in case the inode didn't change. */ | |
436 | ||
437 | r = sd_event_add_inotify(m->event, &new_event, "/etc/localtime", | |
438 | IN_ATTRIB|IN_MOVE_SELF|IN_CLOSE_WRITE|IN_DONT_FOLLOW, manager_dispatch_timezone_change, m); | |
0cb21d8c LP |
439 | if (r == -ENOENT) { |
440 | /* If the file doesn't exist yet, subscribe to /etc instead, and wait until it is created either by | |
441 | * O_CREATE or by rename() */ | |
442 | ||
443 | log_debug_errno(r, "/etc/localtime doesn't exist yet, watching /etc instead."); | |
bbf5fd8e LP |
444 | r = sd_event_add_inotify(m->event, &new_event, "/etc", |
445 | IN_CREATE|IN_MOVED_TO|IN_ONLYDIR, manager_dispatch_timezone_change, m); | |
0cb21d8c | 446 | } |
bbf5fd8e LP |
447 | if (r < 0) |
448 | return log_error_errno(r, "Failed to create timezone change event source: %m"); | |
449 | ||
a5cc7e5a LP |
450 | /* Schedule this slightly earlier than the .timer event sources */ |
451 | r = sd_event_source_set_priority(new_event, SD_EVENT_PRIORITY_NORMAL-1); | |
452 | if (r < 0) | |
453 | return log_error_errno(r, "Failed to set priority of timezone change event sources: %m"); | |
454 | ||
bbf5fd8e | 455 | sd_event_source_unref(m->timezone_change_event_source); |
a5cc7e5a | 456 | m->timezone_change_event_source = TAKE_PTR(new_event); |
bbf5fd8e LP |
457 | |
458 | return 0; | |
459 | } | |
460 | ||
80876c20 | 461 | static int enable_special_signals(Manager *m) { |
718db961 | 462 | _cleanup_close_ int fd = -1; |
80876c20 LP |
463 | |
464 | assert(m); | |
465 | ||
638cece4 | 466 | if (MANAGER_IS_TEST_RUN(m)) |
37453b3a EV |
467 | return 0; |
468 | ||
a41b539e | 469 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
470 | * this will fail with EPERM (older) or EINVAL (newer), so |
471 | * ignore that. */ | |
4c701096 | 472 | if (reboot(RB_DISABLE_CAD) < 0 && !IN_SET(errno, EPERM, EINVAL)) |
56f64d95 | 473 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 474 | |
a41b539e LP |
475 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
476 | if (fd < 0) { | |
477 | /* Support systems without virtual console */ | |
478 | if (fd != -ENOENT) | |
56f64d95 | 479 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 480 | } else { |
80876c20 LP |
481 | /* Enable that we get SIGWINCH on kbrequest */ |
482 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 483 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
484 | } |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
8750ac02 ZJS |
489 | #define RTSIG_IF_AVAILABLE(signum) (signum <= SIGRTMAX ? signum : -1) |
490 | ||
ce578209 | 491 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
492 | struct sigaction sa = { |
493 | .sa_handler = SIG_DFL, | |
494 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
495 | }; | |
718db961 LP |
496 | sigset_t mask; |
497 | int r; | |
60918275 | 498 | |
ce578209 LP |
499 | assert(m); |
500 | ||
57c0c30e LP |
501 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
502 | ||
4dffec14 LP |
503 | /* We make liberal use of realtime signals here. On |
504 | * Linux/glibc we have 30 of them (with the exception of Linux | |
505 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
506 | * (aka SIGRTMAX). */ | |
7d793605 | 507 | |
4dffec14 | 508 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
509 | sigset_add_many(&mask, |
510 | SIGCHLD, /* Child died */ | |
511 | SIGTERM, /* Reexecute daemon */ | |
512 | SIGHUP, /* Reload configuration */ | |
513 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
514 | SIGUSR2, /* systemd: dump status */ | |
515 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
516 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
517 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 518 | |
7d793605 | 519 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 520 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
521 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
522 | SIGRTMIN+3, /* systemd: start halt.target */ | |
523 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
524 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 525 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
526 | |
527 | /* ... space for more special targets ... */ | |
528 | ||
0003d1ab LP |
529 | SIGRTMIN+13, /* systemd: Immediate halt */ |
530 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
531 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
532 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
533 | |
534 | /* ... space for more immediate system state changes ... */ | |
535 | ||
0658666b LP |
536 | SIGRTMIN+20, /* systemd: enable status messages */ |
537 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
538 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
539 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 540 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
541 | |
542 | /* .. one free signal here ... */ | |
543 | ||
8750ac02 ZJS |
544 | /* Apparently Linux on hppa had fewer RT signals until v3.18, |
545 | * SIGRTMAX was SIGRTMIN+25, and then SIGRTMIN was lowered, | |
546 | * see commit v3.17-7614-g1f25df2eff. | |
547 | * | |
548 | * We cannot unconditionally make use of those signals here, | |
549 | * so let's use a runtime check. Since these commands are | |
550 | * accessible by different means and only really a safety | |
551 | * net, the missing functionality on hppa shouldn't matter. | |
552 | */ | |
553 | ||
554 | RTSIG_IF_AVAILABLE(SIGRTMIN+26), /* systemd: set log target to journal-or-kmsg */ | |
555 | RTSIG_IF_AVAILABLE(SIGRTMIN+27), /* systemd: set log target to console */ | |
556 | RTSIG_IF_AVAILABLE(SIGRTMIN+28), /* systemd: set log target to kmsg */ | |
557 | RTSIG_IF_AVAILABLE(SIGRTMIN+29), /* systemd: set log target to syslog-or-kmsg (obsolete) */ | |
4dffec14 LP |
558 | |
559 | /* ... one free signal here SIGRTMIN+30 ... */ | |
7d793605 | 560 | -1); |
ce578209 LP |
561 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
562 | ||
718db961 LP |
563 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
564 | if (m->signal_fd < 0) | |
ce578209 LP |
565 | return -errno; |
566 | ||
151b9b96 | 567 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
568 | if (r < 0) |
569 | return r; | |
ce578209 | 570 | |
7dfbe2e3 TG |
571 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
572 | ||
d8fdc620 LP |
573 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
574 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
575 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
576 | * status information before detecting that there's no process in a cgroup. */ | |
577 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
578 | if (r < 0) |
579 | return r; | |
580 | ||
463d0d15 | 581 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 582 | return enable_special_signals(m); |
e1414003 | 583 | |
ce578209 LP |
584 | return 0; |
585 | } | |
586 | ||
1ad6e8b3 | 587 | static char** sanitize_environment(char **l) { |
f069efb4 | 588 | |
47cf8ff2 | 589 | /* Let's remove some environment variables that we need ourselves to communicate with our clients */ |
f069efb4 | 590 | strv_env_unset_many( |
1ad6e8b3 | 591 | l, |
8047ac8f LP |
592 | "CACHE_DIRECTORY", |
593 | "CONFIGURATION_DIRECTORY", | |
bb0c0d6f | 594 | "CREDENTIALS_DIRECTORY", |
47cf8ff2 LP |
595 | "EXIT_CODE", |
596 | "EXIT_STATUS", | |
597 | "INVOCATION_ID", | |
598 | "JOURNAL_STREAM", | |
599 | "LISTEN_FDNAMES", | |
600 | "LISTEN_FDS", | |
601 | "LISTEN_PID", | |
8047ac8f | 602 | "LOGS_DIRECTORY", |
f069efb4 LP |
603 | "MAINPID", |
604 | "MANAGERPID", | |
47cf8ff2 | 605 | "NOTIFY_SOCKET", |
dcf3c3c3 | 606 | "PIDFILE", |
47cf8ff2 LP |
607 | "REMOTE_ADDR", |
608 | "REMOTE_PORT", | |
8047ac8f | 609 | "RUNTIME_DIRECTORY", |
47cf8ff2 | 610 | "SERVICE_RESULT", |
8047ac8f | 611 | "STATE_DIRECTORY", |
f069efb4 LP |
612 | "WATCHDOG_PID", |
613 | "WATCHDOG_USEC", | |
614 | NULL); | |
47cf8ff2 LP |
615 | |
616 | /* Let's order the environment alphabetically, just to make it pretty */ | |
1ad6e8b3 LP |
617 | strv_sort(l); |
618 | ||
619 | return l; | |
f069efb4 LP |
620 | } |
621 | ||
79a224c4 | 622 | int manager_default_environment(Manager *m) { |
db11487d ZJS |
623 | int r; |
624 | ||
71ecc858 LP |
625 | assert(m); |
626 | ||
1ad6e8b3 LP |
627 | m->transient_environment = strv_free(m->transient_environment); |
628 | ||
463d0d15 | 629 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
630 | /* The system manager always starts with a clean |
631 | * environment for its children. It does not import | |
71cb7d30 | 632 | * the kernel's or the parents' exported variables. |
e21fea24 | 633 | * |
71cb7d30 | 634 | * The initial passed environment is untouched to keep |
e21fea24 KS |
635 | * /proc/self/environ valid; it is used for tagging |
636 | * the init process inside containers. */ | |
1ad6e8b3 | 637 | m->transient_environment = strv_new("PATH=" DEFAULT_PATH); |
db11487d ZJS |
638 | if (!m->transient_environment) |
639 | return log_oom(); | |
e21fea24 KS |
640 | |
641 | /* Import locale variables LC_*= from configuration */ | |
1ad6e8b3 | 642 | (void) locale_setup(&m->transient_environment); |
db11487d ZJS |
643 | } else { |
644 | _cleanup_free_ char *k = NULL; | |
645 | ||
e21fea24 | 646 | /* The user manager passes its own environment |
db11487d | 647 | * along to its children, except for $PATH. */ |
1ad6e8b3 | 648 | m->transient_environment = strv_copy(environ); |
db11487d ZJS |
649 | if (!m->transient_environment) |
650 | return log_oom(); | |
651 | ||
652 | k = strdup("PATH=" DEFAULT_USER_PATH); | |
653 | if (!k) | |
654 | return log_oom(); | |
43d03a83 | 655 | |
db11487d ZJS |
656 | r = strv_env_replace(&m->transient_environment, k); |
657 | if (r < 0) | |
658 | return log_oom(); | |
659 | TAKE_PTR(k); | |
660 | } | |
8b55b8c4 | 661 | |
1ad6e8b3 | 662 | sanitize_environment(m->transient_environment); |
9d5a3757 | 663 | |
e21fea24 | 664 | return 0; |
71ecc858 LP |
665 | } |
666 | ||
3536f49e YW |
667 | static int manager_setup_prefix(Manager *m) { |
668 | struct table_entry { | |
669 | uint64_t type; | |
670 | const char *suffix; | |
671 | }; | |
672 | ||
72fd1768 | 673 | static const struct table_entry paths_system[_EXEC_DIRECTORY_TYPE_MAX] = { |
3536f49e YW |
674 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, |
675 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
676 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
677 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
678 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, | |
679 | }; | |
680 | ||
72fd1768 | 681 | static const struct table_entry paths_user[_EXEC_DIRECTORY_TYPE_MAX] = { |
3536f49e YW |
682 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, |
683 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
c6218495 LP |
684 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_USER_STATE_CACHE, NULL }, |
685 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_USER_CONFIGURATION, "log" }, | |
686 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
3536f49e YW |
687 | }; |
688 | ||
3536f49e YW |
689 | assert(m); |
690 | ||
24b45970 ZJS |
691 | const struct table_entry *p = MANAGER_IS_SYSTEM(m) ? paths_system : paths_user; |
692 | int r; | |
3536f49e | 693 | |
24b45970 | 694 | for (ExecDirectoryType i = 0; i < _EXEC_DIRECTORY_TYPE_MAX; i++) { |
51327bcc | 695 | r = sd_path_lookup(p[i].type, p[i].suffix, &m->prefix[i]); |
3536f49e YW |
696 | if (r < 0) |
697 | return r; | |
698 | } | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
e8630e69 ZJS |
703 | static void manager_free_unit_name_maps(Manager *m) { |
704 | m->unit_id_map = hashmap_free(m->unit_id_map); | |
705 | m->unit_name_map = hashmap_free(m->unit_name_map); | |
3fb2326f | 706 | m->unit_path_cache = set_free(m->unit_path_cache); |
c2911d48 | 707 | m->unit_cache_timestamp_hash = 0; |
e8630e69 ZJS |
708 | } |
709 | ||
279d81dd LP |
710 | static int manager_setup_run_queue(Manager *m) { |
711 | int r; | |
712 | ||
713 | assert(m); | |
714 | assert(!m->run_queue_event_source); | |
715 | ||
716 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
717 | if (r < 0) | |
718 | return r; | |
719 | ||
720 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
721 | if (r < 0) | |
722 | return r; | |
723 | ||
724 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
725 | if (r < 0) | |
726 | return r; | |
727 | ||
728 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
729 | ||
730 | return 0; | |
731 | } | |
732 | ||
575b300b LP |
733 | static int manager_setup_sigchld_event_source(Manager *m) { |
734 | int r; | |
735 | ||
736 | assert(m); | |
737 | assert(!m->sigchld_event_source); | |
738 | ||
739 | r = sd_event_add_defer(m->event, &m->sigchld_event_source, manager_dispatch_sigchld, m); | |
740 | if (r < 0) | |
741 | return r; | |
742 | ||
743 | r = sd_event_source_set_priority(m->sigchld_event_source, SD_EVENT_PRIORITY_NORMAL-7); | |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
747 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); | |
748 | if (r < 0) | |
749 | return r; | |
750 | ||
751 | (void) sd_event_source_set_description(m->sigchld_event_source, "manager-sigchld"); | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
638cece4 | 756 | int manager_new(UnitFileScope scope, ManagerTestRunFlags test_run_flags, Manager **_m) { |
c70cac54 | 757 | _cleanup_(manager_freep) Manager *m = NULL; |
bb0c0d6f | 758 | const char *e; |
e3dd987c | 759 | int r; |
8e274523 LP |
760 | |
761 | assert(_m); | |
463d0d15 | 762 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 763 | |
3ad228ce | 764 | m = new(Manager, 1); |
915b3753 | 765 | if (!m) |
8e274523 | 766 | return -ENOMEM; |
60918275 | 767 | |
3ad228ce LP |
768 | *m = (Manager) { |
769 | .unit_file_scope = scope, | |
770 | .objective = _MANAGER_OBJECTIVE_INVALID, | |
771 | ||
36cf4507 ZJS |
772 | .status_unit_format = STATUS_UNIT_FORMAT_DEFAULT, |
773 | ||
3ad228ce LP |
774 | .default_timer_accuracy_usec = USEC_PER_MINUTE, |
775 | .default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT, | |
776 | .default_tasks_accounting = true, | |
3a0f06c4 | 777 | .default_tasks_max = TASKS_MAX_UNSET, |
3ad228ce LP |
778 | .default_timeout_start_usec = DEFAULT_TIMEOUT_USEC, |
779 | .default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC, | |
780 | .default_restart_usec = DEFAULT_RESTART_USEC, | |
781 | ||
782 | .original_log_level = -1, | |
783 | .original_log_target = _LOG_TARGET_INVALID, | |
784 | ||
986935cf FB |
785 | .watchdog_overridden[WATCHDOG_RUNTIME] = USEC_INFINITY, |
786 | .watchdog_overridden[WATCHDOG_REBOOT] = USEC_INFINITY, | |
787 | .watchdog_overridden[WATCHDOG_KEXEC] = USEC_INFINITY, | |
788 | ||
44a41954 FB |
789 | .show_status_overridden = _SHOW_STATUS_INVALID, |
790 | ||
3ad228ce LP |
791 | .notify_fd = -1, |
792 | .cgroups_agent_fd = -1, | |
793 | .signal_fd = -1, | |
794 | .time_change_fd = -1, | |
795 | .user_lookup_fds = { -1, -1 }, | |
796 | .private_listen_fd = -1, | |
797 | .dev_autofs_fd = -1, | |
798 | .cgroup_inotify_fd = -1, | |
799 | .pin_cgroupfs_fd = -1, | |
800 | .ask_password_inotify_fd = -1, | |
801 | .idle_pipe = { -1, -1, -1, -1}, | |
802 | ||
803 | /* start as id #1, so that we can leave #0 around as "null-like" value */ | |
804 | .current_job_id = 1, | |
805 | ||
806 | .have_ask_password = -EINVAL, /* we don't know */ | |
807 | .first_boot = -1, | |
808 | .test_run_flags = test_run_flags, | |
afcfaa69 LP |
809 | |
810 | .default_oom_policy = OOM_STOP, | |
3ad228ce | 811 | }; |
80876c20 | 812 | |
349cc4a5 | 813 | #if ENABLE_EFI |
463d0d15 | 814 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) |
9f9f0342 LP |
815 | boot_timestamps(m->timestamps + MANAGER_TIMESTAMP_USERSPACE, |
816 | m->timestamps + MANAGER_TIMESTAMP_FIRMWARE, | |
817 | m->timestamps + MANAGER_TIMESTAMP_LOADER); | |
463d0d15 LP |
818 | #endif |
819 | ||
f2341e0a | 820 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
821 | if (MANAGER_IS_SYSTEM(m)) { |
822 | m->unit_log_field = "UNIT="; | |
823 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
824 | |
825 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 826 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
827 | } else { |
828 | m->unit_log_field = "USER_UNIT="; | |
829 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
830 | |
831 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 832 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 833 | } |
f2341e0a | 834 | |
2e5c94b9 | 835 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
8c227e7f | 836 | m->ctrl_alt_del_ratelimit = (RateLimit) { .interval = 2 * USEC_PER_SEC, .burst = 7 }; |
2e5c94b9 | 837 | |
e21fea24 KS |
838 | r = manager_default_environment(m); |
839 | if (r < 0) | |
c70cac54 | 840 | return r; |
1137a57c | 841 | |
d5099efc | 842 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 843 | if (r < 0) |
c70cac54 | 844 | return r; |
60918275 | 845 | |
548f6937 | 846 | r = hashmap_ensure_allocated(&m->cgroup_unit, &path_hash_ops); |
718db961 | 847 | if (r < 0) |
c70cac54 | 848 | return r; |
9152c765 | 849 | |
d5099efc | 850 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 851 | if (r < 0) |
c70cac54 | 852 | return r; |
05e343b7 | 853 | |
da8e1782 MO |
854 | r = prioq_ensure_allocated(&m->run_queue, compare_job_priority); |
855 | if (r < 0) | |
856 | return r; | |
857 | ||
e8112e67 | 858 | r = manager_setup_prefix(m); |
718db961 | 859 | if (r < 0) |
c70cac54 | 860 | return r; |
8742514c | 861 | |
bb0c0d6f LP |
862 | e = secure_getenv("CREDENTIALS_DIRECTORY"); |
863 | if (e) { | |
864 | m->received_credentials = strdup(e); | |
865 | if (!m->received_credentials) | |
866 | return -ENOMEM; | |
867 | } | |
868 | ||
e8112e67 | 869 | r = sd_event_default(&m->event); |
8742514c | 870 | if (r < 0) |
c70cac54 | 871 | return r; |
9152c765 | 872 | |
e8112e67 | 873 | r = manager_setup_run_queue(m); |
a1d32bac | 874 | if (r < 0) |
c70cac54 | 875 | return r; |
8e274523 | 876 | |
e8112e67 ZJS |
877 | if (test_run_flags == MANAGER_TEST_RUN_MINIMAL) { |
878 | m->cgroup_root = strdup(""); | |
879 | if (!m->cgroup_root) | |
880 | return -ENOMEM; | |
881 | } else { | |
882 | r = manager_setup_signals(m); | |
883 | if (r < 0) | |
884 | return r; | |
8c47c732 | 885 | |
e8112e67 ZJS |
886 | r = manager_setup_cgroup(m); |
887 | if (r < 0) | |
888 | return r; | |
575b300b | 889 | |
e8112e67 ZJS |
890 | r = manager_setup_time_change(m); |
891 | if (r < 0) | |
892 | return r; | |
9670d583 | 893 | |
bbf5fd8e LP |
894 | r = manager_read_timezone_stat(m); |
895 | if (r < 0) | |
896 | return r; | |
897 | ||
ea5c5f68 | 898 | (void) manager_setup_timezone_change(m); |
bbf5fd8e | 899 | |
e8112e67 ZJS |
900 | r = manager_setup_sigchld_event_source(m); |
901 | if (r < 0) | |
902 | return r; | |
903 | } | |
e27fe688 | 904 | |
2f8c48b6 AZ |
905 | if (test_run_flags == 0) { |
906 | if (MANAGER_IS_SYSTEM(m)) | |
907 | r = mkdir_label("/run/systemd/units", 0755); | |
908 | else { | |
909 | _cleanup_free_ char *units_path = NULL; | |
910 | r = xdg_user_runtime_dir(&units_path, "/systemd/units"); | |
911 | if (r < 0) | |
912 | return r; | |
913 | r = mkdir_p_label(units_path, 0755); | |
914 | } | |
915 | ||
d3070fbd | 916 | if (r < 0 && r != -EEXIST) |
c70cac54 | 917 | return r; |
d3070fbd LP |
918 | } |
919 | ||
e27fe688 LP |
920 | m->taint_usr = |
921 | !in_initrd() && | |
922 | dir_is_empty("/usr") > 0; | |
923 | ||
232f6754 ZJS |
924 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
925 | * since they might have gotten serialized across the reexec. */ | |
3536f49e | 926 | |
1cc6c93a YW |
927 | *_m = TAKE_PTR(m); |
928 | ||
8e274523 | 929 | return 0; |
60918275 LP |
930 | } |
931 | ||
d86f9d52 | 932 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 933 | int r; |
d86f9d52 | 934 | |
638cece4 | 935 | if (MANAGER_IS_TEST_RUN(m)) |
0d8c31ff ZJS |
936 | return 0; |
937 | ||
d86f9d52 LP |
938 | if (m->notify_fd < 0) { |
939 | _cleanup_close_ int fd = -1; | |
f36a9d59 ZJS |
940 | union sockaddr_union sa; |
941 | socklen_t sa_len; | |
d86f9d52 LP |
942 | |
943 | /* First free all secondary fields */ | |
a1e58e8e | 944 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
945 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
946 | ||
947 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
948 | if (fd < 0) |
949 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 950 | |
a47806fa LP |
951 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
952 | ||
b910cc72 | 953 | m->notify_socket = path_join(m->prefix[EXEC_DIRECTORY_RUNTIME], "systemd/notify"); |
498e87d6 LP |
954 | if (!m->notify_socket) |
955 | return log_oom(); | |
956 | ||
f36a9d59 ZJS |
957 | r = sockaddr_un_set_path(&sa.un, m->notify_socket); |
958 | if (r < 0) | |
959 | return log_error_errno(r, "Notify socket '%s' not valid for AF_UNIX socket address, refusing.", | |
960 | m->notify_socket); | |
961 | sa_len = r; | |
15a3e96f | 962 | |
498e87d6 | 963 | (void) mkdir_parents_label(m->notify_socket, 0755); |
fbda85b0 | 964 | (void) sockaddr_un_unlink(&sa.un); |
7181dbdb | 965 | |
45ae2f72 | 966 | r = mac_selinux_bind(fd, &sa.sa, sa_len); |
4a62c710 | 967 | if (r < 0) |
45ae2f72 | 968 | return log_error_errno(r, "bind(%s) failed: %m", m->notify_socket); |
d86f9d52 | 969 | |
2ff48e98 | 970 | r = setsockopt_int(fd, SOL_SOCKET, SO_PASSCRED, true); |
4a62c710 | 971 | if (r < 0) |
2ff48e98 | 972 | return log_error_errno(r, "SO_PASSCRED failed: %m"); |
d86f9d52 | 973 | |
c10d6bdb | 974 | m->notify_fd = TAKE_FD(fd); |
d86f9d52 LP |
975 | |
976 | log_debug("Using notification socket %s", m->notify_socket); | |
977 | } | |
978 | ||
979 | if (!m->notify_event_source) { | |
151b9b96 | 980 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
981 | if (r < 0) |
982 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 983 | |
d8fdc620 LP |
984 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
985 | * service an exit message belongs. */ | |
575b300b | 986 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-8); |
23bbb0de MS |
987 | if (r < 0) |
988 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
989 | |
990 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
991 | } |
992 | ||
993 | return 0; | |
994 | } | |
995 | ||
d8fdc620 LP |
996 | static int manager_setup_cgroups_agent(Manager *m) { |
997 | ||
998 | static const union sockaddr_union sa = { | |
999 | .un.sun_family = AF_UNIX, | |
1000 | .un.sun_path = "/run/systemd/cgroups-agent", | |
1001 | }; | |
1002 | int r; | |
1003 | ||
1004 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
1005 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
1006 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
1007 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
1008 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
1009 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
1010 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
1011 | * we thus won't lose messages. | |
1012 | * | |
1013 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
1014 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
1015 | * bus for these messages. */ | |
1016 | ||
638cece4 | 1017 | if (MANAGER_IS_TEST_RUN(m)) |
d8fdc620 LP |
1018 | return 0; |
1019 | ||
1020 | if (!MANAGER_IS_SYSTEM(m)) | |
1021 | return 0; | |
1022 | ||
c22800e4 | 1023 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
1024 | if (r < 0) |
1025 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
1026 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
1027 | return 0; |
1028 | ||
1029 | if (m->cgroups_agent_fd < 0) { | |
1030 | _cleanup_close_ int fd = -1; | |
1031 | ||
1032 | /* First free all secondary fields */ | |
1033 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
1034 | ||
1035 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
1036 | if (fd < 0) | |
1037 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
1038 | ||
1039 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
1040 | ||
155b6876 | 1041 | (void) sockaddr_un_unlink(&sa.un); |
d8fdc620 LP |
1042 | |
1043 | /* Only allow root to connect to this socket */ | |
1044 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 1045 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
1046 | if (r < 0) |
1047 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
1048 | ||
0b7e8b32 | 1049 | m->cgroups_agent_fd = TAKE_FD(fd); |
d8fdc620 LP |
1050 | } |
1051 | ||
1052 | if (!m->cgroups_agent_event_source) { | |
1053 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
1054 | if (r < 0) | |
1055 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
1056 | ||
cbe83389 LP |
1057 | /* Process cgroups notifications early. Note that when the agent notification is received |
1058 | * we'll just enqueue the unit in the cgroup empty queue, hence pick a high priority than | |
1059 | * that. Also see handling of cgroup inotify for the unified cgroup stuff. */ | |
1060 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-9); | |
d8fdc620 LP |
1061 | if (r < 0) |
1062 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
1063 | ||
1064 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
1065 | } | |
1066 | ||
1067 | return 0; | |
1068 | } | |
1069 | ||
00d9ef85 LP |
1070 | static int manager_setup_user_lookup_fd(Manager *m) { |
1071 | int r; | |
1072 | ||
1073 | assert(m); | |
1074 | ||
1075 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
1076 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
1077 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
1078 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
1079 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
1080 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
1081 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
1082 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
1083 | * this purpose. | |
1084 | * | |
1085 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
1086 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
1087 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
1088 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
1089 | * | |
1090 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
1091 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
1092 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
1093 | ||
1094 | if (m->user_lookup_fds[0] < 0) { | |
1095 | ||
1096 | /* Free all secondary fields */ | |
1097 | safe_close_pair(m->user_lookup_fds); | |
1098 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
1099 | ||
1100 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
1101 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
1102 | ||
1103 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
1104 | } | |
1105 | ||
1106 | if (!m->user_lookup_event_source) { | |
1107 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
1108 | if (r < 0) | |
1109 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
1110 | ||
1111 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
1112 | * resolutions */ | |
67ae4e8d | 1113 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-11); |
00d9ef85 | 1114 | if (r < 0) |
5238e957 | 1115 | return log_error_errno(errno, "Failed to set priority of user lookup event source: %m"); |
00d9ef85 LP |
1116 | |
1117 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
1118 | } | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
23a177ef | 1123 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 1124 | Unit *u; |
23a177ef LP |
1125 | unsigned n = 0; |
1126 | ||
1127 | assert(m); | |
1128 | ||
595ed347 MS |
1129 | while ((u = m->cleanup_queue)) { |
1130 | assert(u->in_cleanup_queue); | |
23a177ef | 1131 | |
595ed347 | 1132 | unit_free(u); |
23a177ef LP |
1133 | n++; |
1134 | } | |
1135 | ||
1136 | return n; | |
1137 | } | |
1138 | ||
eced69b3 | 1139 | enum { |
35b8ca3a | 1140 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
1141 | GC_OFFSET_UNSURE, /* No clue */ |
1142 | GC_OFFSET_GOOD, /* We still need this unit */ | |
1143 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
1144 | _GC_OFFSET_MAX | |
1145 | }; | |
1146 | ||
00d9ef85 | 1147 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f | 1148 | Unit *other; |
eef85c4a | 1149 | void *v; |
4892084f LN |
1150 | |
1151 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
1152 | ||
1153 | /* Recursively mark referenced units as GOOD as well */ | |
90e74a66 | 1154 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCES]) |
4892084f LN |
1155 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) |
1156 | unit_gc_mark_good(other, gc_marker); | |
1157 | } | |
1158 | ||
eced69b3 | 1159 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 | 1160 | Unit *other; |
eced69b3 | 1161 | bool is_bad; |
eef85c4a | 1162 | void *v; |
701cc384 LP |
1163 | |
1164 | assert(u); | |
1165 | ||
4c701096 YW |
1166 | if (IN_SET(u->gc_marker - gc_marker, |
1167 | GC_OFFSET_GOOD, GC_OFFSET_BAD, GC_OFFSET_UNSURE, GC_OFFSET_IN_PATH)) | |
701cc384 LP |
1168 | return; |
1169 | ||
ac155bb8 | 1170 | if (u->in_cleanup_queue) |
701cc384 LP |
1171 | goto bad; |
1172 | ||
f2f725e5 | 1173 | if (!unit_may_gc(u)) |
701cc384 LP |
1174 | goto good; |
1175 | ||
ac155bb8 | 1176 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1177 | |
1178 | is_bad = true; | |
1179 | ||
90e74a66 | 1180 | HASHMAP_FOREACH_KEY(v, other, u->dependencies[UNIT_REFERENCED_BY]) { |
701cc384 LP |
1181 | unit_gc_sweep(other, gc_marker); |
1182 | ||
ac155bb8 | 1183 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1184 | goto good; |
eced69b3 | 1185 | |
ac155bb8 | 1186 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1187 | is_bad = false; |
701cc384 LP |
1188 | } |
1189 | ||
2641f02e ZJS |
1190 | if (u->refs_by_target) { |
1191 | const UnitRef *ref; | |
1192 | ||
1193 | LIST_FOREACH(refs_by_target, ref, u->refs_by_target) { | |
1194 | unit_gc_sweep(ref->source, gc_marker); | |
1195 | ||
1196 | if (ref->source->gc_marker == gc_marker + GC_OFFSET_GOOD) | |
1197 | goto good; | |
1198 | ||
1199 | if (ref->source->gc_marker != gc_marker + GC_OFFSET_BAD) | |
1200 | is_bad = false; | |
1201 | } | |
1202 | } | |
701cc384 | 1203 | |
eced69b3 LP |
1204 | if (is_bad) |
1205 | goto bad; | |
1206 | ||
1207 | /* We were unable to find anything out about this entry, so | |
1208 | * let's investigate it later */ | |
ac155bb8 | 1209 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1210 | unit_add_to_gc_queue(u); |
1211 | return; | |
1212 | ||
701cc384 | 1213 | bad: |
eced69b3 LP |
1214 | /* We definitely know that this one is not useful anymore, so |
1215 | * let's mark it for deletion */ | |
ac155bb8 | 1216 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1217 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1218 | return; |
1219 | ||
1220 | good: | |
4892084f | 1221 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1222 | } |
1223 | ||
c5a97ed1 LP |
1224 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1225 | unsigned n = 0, gc_marker; | |
595ed347 | 1226 | Unit *u; |
701cc384 LP |
1227 | |
1228 | assert(m); | |
1229 | ||
cf1265e1 | 1230 | /* log_debug("Running GC..."); */ |
701cc384 | 1231 | |
eced69b3 LP |
1232 | m->gc_marker += _GC_OFFSET_MAX; |
1233 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1234 | m->gc_marker = 1; |
701cc384 | 1235 | |
eced69b3 LP |
1236 | gc_marker = m->gc_marker; |
1237 | ||
c5a97ed1 | 1238 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1239 | assert(u->in_gc_queue); |
701cc384 | 1240 | |
595ed347 | 1241 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1242 | |
c5a97ed1 | 1243 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1244 | u->in_gc_queue = false; |
701cc384 LP |
1245 | |
1246 | n++; | |
1247 | ||
4c701096 YW |
1248 | if (IN_SET(u->gc_marker - gc_marker, |
1249 | GC_OFFSET_BAD, GC_OFFSET_UNSURE)) { | |
cc3bc3e6 | 1250 | if (u->id) |
f2341e0a | 1251 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1252 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1253 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1254 | } |
1255 | } | |
1256 | ||
701cc384 LP |
1257 | return n; |
1258 | } | |
1259 | ||
c5a97ed1 LP |
1260 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1261 | unsigned n = 0; | |
1262 | Job *j; | |
1263 | ||
1264 | assert(m); | |
1265 | ||
1266 | while ((j = m->gc_job_queue)) { | |
1267 | assert(j->in_gc_queue); | |
1268 | ||
1269 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1270 | j->in_gc_queue = false; | |
1271 | ||
1272 | n++; | |
1273 | ||
2ab3050f | 1274 | if (!job_may_gc(j)) |
c5a97ed1 LP |
1275 | continue; |
1276 | ||
1277 | log_unit_debug(j->unit, "Collecting job."); | |
1278 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1279 | } | |
1280 | ||
1281 | return n; | |
1282 | } | |
1283 | ||
a3c1168a LP |
1284 | static unsigned manager_dispatch_stop_when_unneeded_queue(Manager *m) { |
1285 | unsigned n = 0; | |
1286 | Unit *u; | |
1287 | int r; | |
1288 | ||
1289 | assert(m); | |
1290 | ||
1291 | while ((u = m->stop_when_unneeded_queue)) { | |
1292 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
1293 | assert(m->stop_when_unneeded_queue); | |
1294 | ||
1295 | assert(u->in_stop_when_unneeded_queue); | |
1296 | LIST_REMOVE(stop_when_unneeded_queue, m->stop_when_unneeded_queue, u); | |
1297 | u->in_stop_when_unneeded_queue = false; | |
1298 | ||
1299 | n++; | |
1300 | ||
1301 | if (!unit_is_unneeded(u)) | |
1302 | continue; | |
1303 | ||
1304 | log_unit_debug(u, "Unit is not needed anymore."); | |
1305 | ||
1306 | /* If stopping a unit fails continuously we might enter a stop loop here, hence stop acting on the | |
1307 | * service being unnecessary after a while. */ | |
1308 | ||
1309 | if (!ratelimit_below(&u->auto_stop_ratelimit)) { | |
1310 | log_unit_warning(u, "Unit not needed anymore, but not stopping since we tried this too often recently."); | |
1311 | continue; | |
1312 | } | |
1313 | ||
1314 | /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ | |
50cbaba4 | 1315 | r = manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, NULL, &error, NULL); |
a3c1168a LP |
1316 | if (r < 0) |
1317 | log_unit_warning_errno(u, r, "Failed to enqueue stop job, ignoring: %s", bus_error_message(&error, r)); | |
1318 | } | |
1319 | ||
1320 | return n; | |
1321 | } | |
1322 | ||
a16e1123 | 1323 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1324 | Unit *u; |
60918275 LP |
1325 | |
1326 | assert(m); | |
1327 | ||
87f0e418 LP |
1328 | while ((u = hashmap_first(m->units))) |
1329 | unit_free(u); | |
964e0949 LP |
1330 | |
1331 | manager_dispatch_cleanup_queue(m); | |
1332 | ||
1333 | assert(!m->load_queue); | |
da8e1782 | 1334 | assert(prioq_isempty(m->run_queue)); |
964e0949 LP |
1335 | assert(!m->dbus_unit_queue); |
1336 | assert(!m->dbus_job_queue); | |
1337 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1338 | assert(!m->gc_unit_queue); |
1339 | assert(!m->gc_job_queue); | |
a3c1168a | 1340 | assert(!m->stop_when_unneeded_queue); |
964e0949 | 1341 | |
964e0949 LP |
1342 | assert(hashmap_isempty(m->jobs)); |
1343 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1344 | |
1345 | m->n_on_console = 0; | |
1346 | m->n_running_jobs = 0; | |
1e75824c MK |
1347 | m->n_installed_jobs = 0; |
1348 | m->n_failed_jobs = 0; | |
a16e1123 LP |
1349 | } |
1350 | ||
06d8d842 | 1351 | Manager* manager_free(Manager *m) { |
06d8d842 ZJS |
1352 | if (!m) |
1353 | return NULL; | |
a16e1123 LP |
1354 | |
1355 | manager_clear_jobs_and_units(m); | |
23a177ef | 1356 | |
24b45970 | 1357 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) |
7824bbeb LP |
1358 | if (unit_vtable[c]->shutdown) |
1359 | unit_vtable[c]->shutdown(m); | |
1360 | ||
86036b26 LP |
1361 | /* Keep the cgroup hierarchy in place except when we know we are going down for good */ |
1362 | manager_shutdown_cgroup(m, IN_SET(m->objective, MANAGER_EXIT, MANAGER_REBOOT, MANAGER_POWEROFF, MANAGER_HALT, MANAGER_KEXEC)); | |
8e274523 | 1363 | |
07a78643 | 1364 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1365 | |
5e8d1c9a | 1366 | bus_done(m); |
19d22d43 | 1367 | manager_varlink_done(m); |
ea430986 | 1368 | |
e8a565cb YW |
1369 | exec_runtime_vacuum(m); |
1370 | hashmap_free(m->exec_runtime_by_id); | |
1371 | ||
29206d46 LP |
1372 | dynamic_user_vacuum(m, false); |
1373 | hashmap_free(m->dynamic_users); | |
1374 | ||
87f0e418 | 1375 | hashmap_free(m->units); |
4b58153d | 1376 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1377 | hashmap_free(m->jobs); |
62a76913 | 1378 | hashmap_free(m->watch_pids); |
05e343b7 | 1379 | hashmap_free(m->watch_bus); |
9152c765 | 1380 | |
da8e1782 MO |
1381 | prioq_free(m->run_queue); |
1382 | ||
95ae05c0 | 1383 | set_free(m->startup_units); |
f755e3b7 LP |
1384 | set_free(m->failed_units); |
1385 | ||
718db961 | 1386 | sd_event_source_unref(m->signal_event_source); |
575b300b | 1387 | sd_event_source_unref(m->sigchld_event_source); |
718db961 | 1388 | sd_event_source_unref(m->notify_event_source); |
d8fdc620 | 1389 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 | 1390 | sd_event_source_unref(m->time_change_event_source); |
bbf5fd8e | 1391 | sd_event_source_unref(m->timezone_change_event_source); |
718db961 | 1392 | sd_event_source_unref(m->jobs_in_progress_event_source); |
752b5905 | 1393 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1394 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1395 | |
03e334a1 LP |
1396 | safe_close(m->signal_fd); |
1397 | safe_close(m->notify_fd); | |
d8fdc620 | 1398 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1399 | safe_close(m->time_change_fd); |
00d9ef85 | 1400 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1401 | |
e46b13c8 ZJS |
1402 | manager_close_ask_password(m); |
1403 | ||
718db961 LP |
1404 | manager_close_idle_pipe(m); |
1405 | ||
1406 | sd_event_unref(m->event); | |
60918275 | 1407 | |
c952c6ec LP |
1408 | free(m->notify_socket); |
1409 | ||
84e3543e | 1410 | lookup_paths_free(&m->lookup_paths); |
1ad6e8b3 LP |
1411 | strv_free(m->transient_environment); |
1412 | strv_free(m->client_environment); | |
036643a2 | 1413 | |
4ad49000 | 1414 | hashmap_free(m->cgroup_unit); |
e8630e69 | 1415 | manager_free_unit_name_maps(m); |
33be102a | 1416 | |
664f88a7 LP |
1417 | free(m->switch_root); |
1418 | free(m->switch_root_init); | |
1419 | ||
31ce987c | 1420 | rlimit_free_all(m->rlimit); |
c93ff2e9 | 1421 | |
a57f7e2c LP |
1422 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1423 | hashmap_free(m->units_requiring_mounts_for); | |
1424 | ||
00d9ef85 LP |
1425 | hashmap_free(m->uid_refs); |
1426 | hashmap_free(m->gid_refs); | |
1427 | ||
24b45970 | 1428 | for (ExecDirectoryType dt = 0; dt < _EXEC_DIRECTORY_TYPE_MAX; dt++) |
35aba85a | 1429 | m->prefix[dt] = mfree(m->prefix[dt]); |
bb0c0d6f | 1430 | free(m->received_credentials); |
35aba85a | 1431 | |
6b430fdb | 1432 | return mfree(m); |
60918275 LP |
1433 | } |
1434 | ||
04eb582a | 1435 | static void manager_enumerate_perpetual(Manager *m) { |
04eb582a LP |
1436 | assert(m); |
1437 | ||
b1d5246d ZJS |
1438 | if (m->test_run_flags == MANAGER_TEST_RUN_MINIMAL) |
1439 | return; | |
1440 | ||
04eb582a | 1441 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1442 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
04eb582a LP |
1443 | if (!unit_type_supported(c)) { |
1444 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); | |
1445 | continue; | |
1446 | } | |
1447 | ||
1448 | if (unit_vtable[c]->enumerate_perpetual) | |
1449 | unit_vtable[c]->enumerate_perpetual(m); | |
1450 | } | |
1451 | } | |
1452 | ||
a1113e08 | 1453 | static void manager_enumerate(Manager *m) { |
f50e0a01 LP |
1454 | assert(m); |
1455 | ||
b1d5246d ZJS |
1456 | if (m->test_run_flags == MANAGER_TEST_RUN_MINIMAL) |
1457 | return; | |
1458 | ||
04eb582a | 1459 | /* Let's ask every type to load all units from disk/kernel that it might know */ |
24b45970 | 1460 | for (UnitType c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1461 | if (!unit_type_supported(c)) { |
03afec3c | 1462 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1463 | continue; |
a57f7e2c | 1464 | } |
f50e0a01 | 1465 | |
94b01dae ZJS |
1466 | if (unit_vtable[c]->enumerate) |
1467 | unit_vtable[c]->enumerate(m); | |
0faacd47 LP |
1468 | } |
1469 | ||
f50e0a01 | 1470 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1471 | } |
1472 | ||
007c6337 | 1473 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1474 | Unit *u; |
1475 | char *k; | |
007c6337 | 1476 | int r; |
a16e1123 LP |
1477 | |
1478 | assert(m); | |
f50e0a01 | 1479 | |
f0831ed2 LP |
1480 | log_debug("Invoking unit coldplug() handlers…"); |
1481 | ||
1482 | /* Let's place the units back into their deserialized state */ | |
90e74a66 | 1483 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f50e0a01 LP |
1484 | |
1485 | /* ignore aliases */ | |
ac155bb8 | 1486 | if (u->id != k) |
f50e0a01 LP |
1487 | continue; |
1488 | ||
007c6337 LP |
1489 | r = unit_coldplug(u); |
1490 | if (r < 0) | |
1491 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1492 | } |
a16e1123 LP |
1493 | } |
1494 | ||
f0831ed2 | 1495 | static void manager_catchup(Manager *m) { |
f0831ed2 LP |
1496 | Unit *u; |
1497 | char *k; | |
1498 | ||
1499 | assert(m); | |
1500 | ||
1501 | log_debug("Invoking unit catchup() handlers…"); | |
1502 | ||
1503 | /* Let's catch up on any state changes that happened while we were reloading/reexecing */ | |
90e74a66 | 1504 | HASHMAP_FOREACH_KEY(u, k, m->units) { |
f0831ed2 LP |
1505 | |
1506 | /* ignore aliases */ | |
1507 | if (u->id != k) | |
1508 | continue; | |
1509 | ||
1510 | unit_catchup(u); | |
1511 | } | |
1512 | } | |
1513 | ||
9ff1a6f1 | 1514 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9ff1a6f1 | 1515 | Unit *u; |
9588bc32 LP |
1516 | |
1517 | assert(m); | |
1518 | ||
90e74a66 | 1519 | HASHMAP_FOREACH(u, m->units) { |
9588bc32 LP |
1520 | |
1521 | if (fdset_size(fds) <= 0) | |
1522 | break; | |
1523 | ||
9ff1a6f1 LP |
1524 | if (!UNIT_VTABLE(u)->distribute_fds) |
1525 | continue; | |
9588bc32 | 1526 | |
9ff1a6f1 LP |
1527 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1528 | } | |
9588bc32 LP |
1529 | } |
1530 | ||
8559b3b7 LP |
1531 | static bool manager_dbus_is_running(Manager *m, bool deserialized) { |
1532 | Unit *u; | |
1533 | ||
1534 | assert(m); | |
1535 | ||
1536 | /* This checks whether the dbus instance we are supposed to expose our APIs on is up. We check both the socket | |
1537 | * and the service unit. If the 'deserialized' parameter is true we'll check the deserialized state of the unit | |
1538 | * rather than the current one. */ | |
1539 | ||
638cece4 | 1540 | if (MANAGER_IS_TEST_RUN(m)) |
8559b3b7 LP |
1541 | return false; |
1542 | ||
8559b3b7 LP |
1543 | u = manager_get_unit(m, SPECIAL_DBUS_SOCKET); |
1544 | if (!u) | |
1545 | return false; | |
1546 | if ((deserialized ? SOCKET(u)->deserialized_state : SOCKET(u)->state) != SOCKET_RUNNING) | |
1547 | return false; | |
1548 | ||
1549 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1550 | if (!u) | |
1551 | return false; | |
1552 | if (!IN_SET((deserialized ? SERVICE(u)->deserialized_state : SERVICE(u)->state), SERVICE_RUNNING, SERVICE_RELOAD)) | |
1553 | return false; | |
1554 | ||
1555 | return true; | |
1556 | } | |
1557 | ||
9d4c195c LP |
1558 | static void manager_setup_bus(Manager *m) { |
1559 | assert(m); | |
1560 | ||
1561 | /* Let's set up our private bus connection now, unconditionally */ | |
1562 | (void) bus_init_private(m); | |
1563 | ||
1564 | /* If we are in --user mode also connect to the system bus now */ | |
1565 | if (MANAGER_IS_USER(m)) | |
1566 | (void) bus_init_system(m); | |
1567 | ||
1568 | /* Let's connect to the bus now, but only if the unit is supposed to be up */ | |
1569 | if (manager_dbus_is_running(m, MANAGER_IS_RELOADING(m))) { | |
1570 | (void) bus_init_api(m); | |
1571 | ||
1572 | if (MANAGER_IS_SYSTEM(m)) | |
1573 | (void) bus_init_system(m); | |
1574 | } | |
1575 | } | |
1576 | ||
159f1e76 LP |
1577 | static void manager_preset_all(Manager *m) { |
1578 | int r; | |
1579 | ||
1580 | assert(m); | |
1581 | ||
1582 | if (m->first_boot <= 0) | |
1583 | return; | |
1584 | ||
1585 | if (!MANAGER_IS_SYSTEM(m)) | |
1586 | return; | |
1587 | ||
638cece4 | 1588 | if (MANAGER_IS_TEST_RUN(m)) |
159f1e76 LP |
1589 | return; |
1590 | ||
1591 | /* If this is the first boot, and we are in the host system, then preset everything */ | |
1592 | r = unit_file_preset_all(UNIT_FILE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); | |
1593 | if (r < 0) | |
1594 | log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, | |
1595 | "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
1596 | else | |
1597 | log_info("Populated /etc with preset unit settings."); | |
1598 | } | |
1599 | ||
5ce5e1ad LP |
1600 | static void manager_ready(Manager *m) { |
1601 | assert(m); | |
1602 | ||
1603 | /* After having loaded everything, do the final round of catching up with what might have changed */ | |
1604 | ||
1605 | m->objective = MANAGER_OK; /* Tell everyone we are up now */ | |
1606 | ||
1607 | /* It might be safe to log to the journal now and connect to dbus */ | |
1608 | manager_recheck_journal(m); | |
1609 | manager_recheck_dbus(m); | |
1610 | ||
5ce5e1ad LP |
1611 | /* Let's finally catch up with any changes that took place while we were reloading/reexecing */ |
1612 | manager_catchup(m); | |
c6e892bc YW |
1613 | |
1614 | m->honor_device_enumeration = true; | |
5ce5e1ad LP |
1615 | } |
1616 | ||
d147e2b6 ZJS |
1617 | static Manager* manager_reloading_start(Manager *m) { |
1618 | m->n_reloading++; | |
1619 | return m; | |
1620 | } | |
1621 | static void manager_reloading_stopp(Manager **m) { | |
1622 | if (*m) { | |
1623 | assert((*m)->n_reloading > 0); | |
1624 | (*m)->n_reloading--; | |
1625 | } | |
1626 | } | |
1627 | ||
a16e1123 | 1628 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
17f01ace | 1629 | int r; |
a16e1123 LP |
1630 | |
1631 | assert(m); | |
1632 | ||
a1f31f47 ZJS |
1633 | /* If we are running in test mode, we still want to run the generators, |
1634 | * but we should not touch the real generator directories. */ | |
1635 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, | |
638cece4 | 1636 | MANAGER_IS_TEST_RUN(m) ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
a1f31f47 | 1637 | NULL); |
e801700e | 1638 | if (r < 0) |
572986ca | 1639 | return log_error_errno(r, "Failed to initialize path lookup table: %m"); |
5a1e9937 | 1640 | |
d4ee7bd8 | 1641 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_START)); |
eb523bfb LP |
1642 | r = manager_run_environment_generators(m); |
1643 | if (r >= 0) | |
1644 | r = manager_run_generators(m); | |
d4ee7bd8 | 1645 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_GENERATORS_FINISH)); |
07719a21 LP |
1646 | if (r < 0) |
1647 | return r; | |
1648 | ||
159f1e76 | 1649 | manager_preset_all(m); |
572986ca | 1650 | |
581fef8d | 1651 | lookup_paths_log(&m->lookup_paths); |
572986ca | 1652 | |
4df7d537 ZJS |
1653 | { |
1654 | /* This block is (optionally) done with the reloading counter bumped */ | |
1655 | _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; | |
1656 | ||
1657 | /* If we will deserialize make sure that during enumeration this is already known, so we increase the | |
1658 | * counter here already */ | |
1659 | if (serialization) | |
1660 | reloading = manager_reloading_start(m); | |
1661 | ||
1662 | /* First, enumerate what we can from all config files */ | |
1663 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_START)); | |
1664 | manager_enumerate_perpetual(m); | |
1665 | manager_enumerate(m); | |
1666 | dual_timestamp_get(m->timestamps + manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_UNITS_LOAD_FINISH)); | |
1667 | ||
1668 | /* Second, deserialize if there is something to deserialize */ | |
1669 | if (serialization) { | |
1670 | r = manager_deserialize(m, serialization, fds); | |
1671 | if (r < 0) | |
1672 | return log_error_errno(r, "Deserialization failed: %m"); | |
1673 | } | |
01e10de3 | 1674 | |
4df7d537 ZJS |
1675 | /* Any fds left? Find some unit which wants them. This is useful to allow container managers to pass |
1676 | * some file descriptors to us pre-initialized. This enables socket-based activation of entire | |
1677 | * containers. */ | |
1678 | manager_distribute_fds(m, fds); | |
d86f9d52 | 1679 | |
4df7d537 ZJS |
1680 | /* We might have deserialized the notify fd, but if we didn't then let's create the bus now */ |
1681 | r = manager_setup_notify(m); | |
1682 | if (r < 0) | |
1683 | /* No sense to continue without notifications, our children would fail anyway. */ | |
1684 | return r; | |
d8fdc620 | 1685 | |
4df7d537 ZJS |
1686 | r = manager_setup_cgroups_agent(m); |
1687 | if (r < 0) | |
1688 | /* Likewise, no sense to continue without empty cgroup notifications. */ | |
1689 | return r; | |
00d9ef85 | 1690 | |
4df7d537 ZJS |
1691 | r = manager_setup_user_lookup_fd(m); |
1692 | if (r < 0) | |
1693 | /* This shouldn't fail, except if things are really broken. */ | |
1694 | return r; | |
8559b3b7 | 1695 | |
4df7d537 ZJS |
1696 | /* Connect to the bus if we are good for it */ |
1697 | manager_setup_bus(m); | |
e3dd987c | 1698 | |
5238e957 | 1699 | /* Now that we are connected to all possible buses, let's deserialize who is tracking us. */ |
4df7d537 ZJS |
1700 | r = bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); |
1701 | if (r < 0) | |
1702 | log_warning_errno(r, "Failed to deserialized tracked clients, ignoring: %m"); | |
1703 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
a16e1123 | 1704 | |
19d22d43 LP |
1705 | r = manager_varlink_init(m); |
1706 | if (r < 0) | |
1707 | log_warning_errno(r, "Failed to set up Varlink server, ignoring: %m"); | |
1708 | ||
4df7d537 ZJS |
1709 | /* Third, fire things up! */ |
1710 | manager_coldplug(m); | |
3ad2afb6 | 1711 | |
4df7d537 ZJS |
1712 | /* Clean up runtime objects */ |
1713 | manager_vacuum(m); | |
71445ae7 | 1714 | |
4df7d537 ZJS |
1715 | if (serialization) |
1716 | /* Let's wait for the UnitNew/JobNew messages being sent, before we notify that the | |
1717 | * reload is finished */ | |
1718 | m->send_reloading_done = true; | |
9f611ad8 LP |
1719 | } |
1720 | ||
5ce5e1ad | 1721 | manager_ready(m); |
f0831ed2 | 1722 | |
17f01ace | 1723 | return 0; |
f50e0a01 LP |
1724 | } |
1725 | ||
50cbaba4 LP |
1726 | int manager_add_job( |
1727 | Manager *m, | |
1728 | JobType type, | |
1729 | Unit *unit, | |
1730 | JobMode mode, | |
1731 | Set *affected_jobs, | |
1732 | sd_bus_error *error, | |
1733 | Job **ret) { | |
1734 | ||
7527cb52 | 1735 | Transaction *tr; |
50cbaba4 | 1736 | int r; |
e5b5ae50 LP |
1737 | |
1738 | assert(m); | |
1739 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1740 | assert(unit); |
e5b5ae50 | 1741 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1742 | |
7358dc02 | 1743 | if (mode == JOB_ISOLATE && type != JOB_START) |
50cbaba4 | 1744 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); |
c497c7a9 | 1745 | |
7358dc02 | 1746 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
50cbaba4 | 1747 | return sd_bus_error_setf(error, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
2528a7a6 | 1748 | |
1f0f9f21 KK |
1749 | if (mode == JOB_TRIGGERING && type != JOB_STOP) |
1750 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "--job-mode=triggering is only valid for stop."); | |
1751 | ||
f2341e0a | 1752 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1753 | |
c6497ccb | 1754 | type = job_type_collapse(type, unit); |
e0209d83 | 1755 | |
23ade460 | 1756 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1757 | if (!tr) |
1758 | return -ENOMEM; | |
11dd41ce | 1759 | |
4bd29fe5 | 1760 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
3742095b | 1761 | IN_SET(mode, JOB_IGNORE_DEPENDENCIES, JOB_IGNORE_REQUIREMENTS), |
50cbaba4 | 1762 | mode == JOB_IGNORE_DEPENDENCIES, error); |
7527cb52 MS |
1763 | if (r < 0) |
1764 | goto tr_abort; | |
c497c7a9 | 1765 | |
7527cb52 MS |
1766 | if (mode == JOB_ISOLATE) { |
1767 | r = transaction_add_isolate_jobs(tr, m); | |
1768 | if (r < 0) | |
1769 | goto tr_abort; | |
1770 | } | |
1771 | ||
1f0f9f21 KK |
1772 | if (mode == JOB_TRIGGERING) { |
1773 | r = transaction_add_triggering_jobs(tr, unit); | |
1774 | if (r < 0) | |
1775 | goto tr_abort; | |
1776 | } | |
1777 | ||
50cbaba4 | 1778 | r = transaction_activate(tr, m, mode, affected_jobs, error); |
7527cb52 MS |
1779 | if (r < 0) |
1780 | goto tr_abort; | |
e5b5ae50 | 1781 | |
f2341e0a | 1782 | log_unit_debug(unit, |
66870f90 ZJS |
1783 | "Enqueued job %s/%s as %u", unit->id, |
1784 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1785 | |
50cbaba4 LP |
1786 | if (ret) |
1787 | *ret = tr->anchor_job; | |
60918275 | 1788 | |
7527cb52 | 1789 | transaction_free(tr); |
e5b5ae50 | 1790 | return 0; |
7527cb52 MS |
1791 | |
1792 | tr_abort: | |
1793 | transaction_abort(tr); | |
1794 | transaction_free(tr); | |
1795 | return r; | |
e5b5ae50 | 1796 | } |
60918275 | 1797 | |
50cbaba4 | 1798 | 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 | 1799 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1800 | int r; |
1801 | ||
1802 | assert(m); | |
1803 | assert(type < _JOB_TYPE_MAX); | |
1804 | assert(name); | |
1805 | assert(mode < _JOB_MODE_MAX); | |
1806 | ||
c3090674 LP |
1807 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1808 | if (r < 0) | |
28247076 | 1809 | return r; |
4440b27d | 1810 | assert(unit); |
28247076 | 1811 | |
50cbaba4 | 1812 | return manager_add_job(m, type, unit, mode, affected_jobs, e, ret); |
53f18416 LP |
1813 | } |
1814 | ||
50cbaba4 | 1815 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Set *affected_jobs, Job **ret) { |
4afd3348 | 1816 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1817 | int r; |
1818 | ||
1819 | assert(m); | |
1820 | assert(type < _JOB_TYPE_MAX); | |
1821 | assert(name); | |
1822 | assert(mode < _JOB_MODE_MAX); | |
1823 | ||
50cbaba4 | 1824 | r = manager_add_job_by_name(m, type, name, mode, affected_jobs, &error, ret); |
53f18416 LP |
1825 | if (r < 0) |
1826 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1827 | ||
1828 | return r; | |
28247076 LP |
1829 | } |
1830 | ||
15d167f8 JW |
1831 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1832 | int r; | |
1833 | Transaction *tr; | |
1834 | ||
1835 | assert(m); | |
1836 | assert(unit); | |
1837 | assert(mode < _JOB_MODE_MAX); | |
1838 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1839 | ||
1840 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1841 | if (!tr) | |
1842 | return -ENOMEM; | |
1843 | ||
1844 | /* We need an anchor job */ | |
1845 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1846 | if (r < 0) | |
1847 | goto tr_abort; | |
1848 | ||
1849 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1850 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1851 | ||
50cbaba4 | 1852 | r = transaction_activate(tr, m, mode, NULL, e); |
15d167f8 JW |
1853 | if (r < 0) |
1854 | goto tr_abort; | |
1855 | ||
1856 | transaction_free(tr); | |
1857 | return 0; | |
1858 | ||
1859 | tr_abort: | |
1860 | transaction_abort(tr); | |
1861 | transaction_free(tr); | |
1862 | return r; | |
1863 | } | |
1864 | ||
60918275 LP |
1865 | Job *manager_get_job(Manager *m, uint32_t id) { |
1866 | assert(m); | |
1867 | ||
1868 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1869 | } | |
1870 | ||
87f0e418 | 1871 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1872 | assert(m); |
1873 | assert(name); | |
1874 | ||
87f0e418 | 1875 | return hashmap_get(m->units, name); |
60918275 LP |
1876 | } |
1877 | ||
19496554 MS |
1878 | static int manager_dispatch_target_deps_queue(Manager *m) { |
1879 | Unit *u; | |
1880 | unsigned k; | |
1881 | int r = 0; | |
1882 | ||
1883 | static const UnitDependency deps[] = { | |
1884 | UNIT_REQUIRED_BY, | |
1885 | UNIT_REQUISITE_OF, | |
1886 | UNIT_WANTED_BY, | |
1887 | UNIT_BOUND_BY | |
1888 | }; | |
1889 | ||
1890 | assert(m); | |
1891 | ||
1892 | while ((u = m->target_deps_queue)) { | |
1893 | assert(u->in_target_deps_queue); | |
1894 | ||
1895 | LIST_REMOVE(target_deps_queue, u->manager->target_deps_queue, u); | |
1896 | u->in_target_deps_queue = false; | |
1897 | ||
1898 | for (k = 0; k < ELEMENTSOF(deps); k++) { | |
1899 | Unit *target; | |
19496554 MS |
1900 | void *v; |
1901 | ||
90e74a66 | 1902 | HASHMAP_FOREACH_KEY(v, target, u->dependencies[deps[k]]) { |
19496554 MS |
1903 | r = unit_add_default_target_dependency(u, target); |
1904 | if (r < 0) | |
1905 | return r; | |
1906 | } | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | return r; | |
1911 | } | |
1912 | ||
c1e1601e | 1913 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1914 | Unit *u; |
c1e1601e | 1915 | unsigned n = 0; |
60918275 LP |
1916 | |
1917 | assert(m); | |
1918 | ||
223dabab LP |
1919 | /* Make sure we are not run recursively */ |
1920 | if (m->dispatching_load_queue) | |
c1e1601e | 1921 | return 0; |
223dabab LP |
1922 | |
1923 | m->dispatching_load_queue = true; | |
1924 | ||
87f0e418 | 1925 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1926 | * tries to load its data until the queue is empty */ |
1927 | ||
595ed347 MS |
1928 | while ((u = m->load_queue)) { |
1929 | assert(u->in_load_queue); | |
034c6ed7 | 1930 | |
595ed347 | 1931 | unit_load(u); |
c1e1601e | 1932 | n++; |
60918275 LP |
1933 | } |
1934 | ||
223dabab | 1935 | m->dispatching_load_queue = false; |
19496554 MS |
1936 | |
1937 | /* Dispatch the units waiting for their target dependencies to be added now, as all targets that we know about | |
1938 | * should be loaded and have aliases resolved */ | |
1939 | (void) manager_dispatch_target_deps_queue(m); | |
1940 | ||
c1e1601e | 1941 | return n; |
60918275 LP |
1942 | } |
1943 | ||
81be2388 | 1944 | bool manager_unit_cache_should_retry_load(Unit *u) { |
cda66772 LB |
1945 | assert(u); |
1946 | ||
81be2388 ZJS |
1947 | /* Automatic reloading from disk only applies to units which were not found sometime in the past, and |
1948 | * the not-found stub is kept pinned in the unit graph by dependencies. For units that were | |
1949 | * previously loaded, we don't do automatic reloading, and daemon-reload is necessary to update. */ | |
cda66772 LB |
1950 | if (u->load_state != UNIT_NOT_FOUND) |
1951 | return false; | |
1952 | ||
81be2388 ZJS |
1953 | /* The cache has been updated since the last time we tried to load the unit. There might be new |
1954 | * fragment paths to read. */ | |
c2911d48 | 1955 | if (u->manager->unit_cache_timestamp_hash != u->fragment_not_found_timestamp_hash) |
cda66772 | 1956 | return true; |
d904afc7 | 1957 | |
81be2388 | 1958 | /* The cache needs to be updated because there are modifications on disk. */ |
c2911d48 | 1959 | return !lookup_paths_timestamp_hash_same(&u->manager->lookup_paths, u->manager->unit_cache_timestamp_hash, NULL); |
d904afc7 LB |
1960 | } |
1961 | ||
c2756a68 LP |
1962 | int manager_load_unit_prepare( |
1963 | Manager *m, | |
1964 | const char *name, | |
1965 | const char *path, | |
718db961 | 1966 | sd_bus_error *e, |
c2756a68 LP |
1967 | Unit **_ret) { |
1968 | ||
dc409696 | 1969 | _cleanup_(unit_freep) Unit *cleanup_ret = NULL; |
87f0e418 | 1970 | Unit *ret; |
7d17cfbc | 1971 | UnitType t; |
60918275 LP |
1972 | int r; |
1973 | ||
1974 | assert(m); | |
7a6a095a | 1975 | assert(_ret); |
60918275 | 1976 | |
db06e3b6 LP |
1977 | /* This will prepare the unit for loading, but not actually |
1978 | * load anything from disk. */ | |
0301abf4 | 1979 | |
718db961 LP |
1980 | if (path && !is_path(path)) |
1981 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 | 1982 | |
08f46856 BR |
1983 | if (!name) { |
1984 | /* 'name' and 'path' must not both be null. Check here 'path' using assert_se() to | |
1985 | * workaround a bug in gcc that generates a -Wnonnull warning when calling basename(), | |
1986 | * but this cannot be possible in any code path (See #6119). */ | |
1987 | assert_se(path); | |
2b6bf07d | 1988 | name = basename(path); |
08f46856 | 1989 | } |
9e2f7c11 | 1990 | |
7d17cfbc MS |
1991 | t = unit_name_to_type(name); |
1992 | ||
5d512d54 LN |
1993 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1994 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1995 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1996 | ||
718db961 | 1997 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1998 | } |
60918275 | 1999 | |
7d17cfbc MS |
2000 | ret = manager_get_unit(m, name); |
2001 | if (ret) { | |
d904afc7 LB |
2002 | /* The time-based cache allows to start new units without daemon-reload, |
2003 | * but if they are already referenced (because of dependencies or ordering) | |
2004 | * then we have to force a load of the fragment. As an optimization, check | |
2005 | * first if anything in the usual paths was modified since the last time | |
7233e91a LB |
2006 | * the cache was loaded. Also check if the last time an attempt to load the |
2007 | * unit was made was before the most recent cache refresh, so that we know | |
81be2388 | 2008 | * we need to try again — even if the cache is current, it might have been |
7233e91a LB |
2009 | * updated in a different context before we had a chance to retry loading |
2010 | * this particular unit. */ | |
81be2388 | 2011 | if (manager_unit_cache_should_retry_load(ret)) |
d904afc7 LB |
2012 | ret->load_state = UNIT_STUB; |
2013 | else { | |
2014 | *_ret = ret; | |
2015 | return 1; | |
2016 | } | |
2017 | } else { | |
2018 | ret = cleanup_ret = unit_new(m, unit_vtable[t]->object_size); | |
2019 | if (!ret) | |
2020 | return -ENOMEM; | |
034c6ed7 | 2021 | } |
60918275 | 2022 | |
7d17cfbc | 2023 | if (path) { |
d904afc7 LB |
2024 | r = free_and_strdup(&ret->fragment_path, path); |
2025 | if (r < 0) | |
2026 | return r; | |
7d17cfbc | 2027 | } |
0301abf4 | 2028 | |
1058cbf2 | 2029 | r = unit_add_name(ret, name); |
dc409696 | 2030 | if (r < 0) |
1ffba6fe | 2031 | return r; |
60918275 | 2032 | |
87f0e418 | 2033 | unit_add_to_load_queue(ret); |
c1e1601e | 2034 | unit_add_to_dbus_queue(ret); |
949061f0 | 2035 | unit_add_to_gc_queue(ret); |
c1e1601e | 2036 | |
7a6a095a | 2037 | *_ret = ret; |
dc409696 | 2038 | cleanup_ret = NULL; |
db06e3b6 LP |
2039 | |
2040 | return 0; | |
2041 | } | |
2042 | ||
c2756a68 LP |
2043 | int manager_load_unit( |
2044 | Manager *m, | |
2045 | const char *name, | |
2046 | const char *path, | |
718db961 | 2047 | sd_bus_error *e, |
c2756a68 LP |
2048 | Unit **_ret) { |
2049 | ||
db06e3b6 LP |
2050 | int r; |
2051 | ||
2052 | assert(m); | |
7a6a095a | 2053 | assert(_ret); |
db06e3b6 LP |
2054 | |
2055 | /* This will load the service information files, but not actually | |
2056 | * start any services or anything. */ | |
2057 | ||
c3090674 LP |
2058 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
2059 | if (r != 0) | |
db06e3b6 LP |
2060 | return r; |
2061 | ||
f50e0a01 | 2062 | manager_dispatch_load_queue(m); |
60918275 | 2063 | |
7a6a095a | 2064 | *_ret = unit_follow_merge(*_ret); |
4109ede7 ZJS |
2065 | return 0; |
2066 | } | |
2067 | ||
2068 | int manager_load_startable_unit_or_warn( | |
2069 | Manager *m, | |
2070 | const char *name, | |
2071 | const char *path, | |
2072 | Unit **ret) { | |
2073 | ||
2074 | /* Load a unit, make sure it loaded fully and is not masked. */ | |
2075 | ||
2076 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
2077 | Unit *unit; | |
2078 | int r; | |
2079 | ||
2080 | r = manager_load_unit(m, name, path, &error, &unit); | |
2081 | if (r < 0) | |
2082 | return log_error_errno(r, "Failed to load %s %s: %s", | |
8ace1db7 | 2083 | name ? "unit" : "unit file", name ?: path, |
4109ede7 | 2084 | bus_error_message(&error, r)); |
8ace1db7 LP |
2085 | |
2086 | r = bus_unit_validate_load_state(unit, &error); | |
2087 | if (r < 0) | |
2088 | return log_error_errno(r, "%s", bus_error_message(&error, r)); | |
9e2f7c11 | 2089 | |
4109ede7 | 2090 | *ret = unit; |
60918275 LP |
2091 | return 0; |
2092 | } | |
a66d02c3 | 2093 | |
cea8e32e | 2094 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
a66d02c3 LP |
2095 | Job *j; |
2096 | ||
2097 | assert(s); | |
2098 | assert(f); | |
2099 | ||
90e74a66 | 2100 | HASHMAP_FOREACH(j, s->jobs) |
cea8e32e | 2101 | job_dump(j, f, prefix); |
a66d02c3 LP |
2102 | } |
2103 | ||
87f0e418 | 2104 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
87f0e418 | 2105 | Unit *u; |
11dd41ce | 2106 | const char *t; |
a66d02c3 LP |
2107 | |
2108 | assert(s); | |
2109 | assert(f); | |
2110 | ||
90e74a66 | 2111 | HASHMAP_FOREACH_KEY(u, t, s->units) |
ac155bb8 | 2112 | if (u->id == t) |
87f0e418 | 2113 | unit_dump(u, f, prefix); |
a66d02c3 | 2114 | } |
7fad411c | 2115 | |
ad75b9e7 LP |
2116 | void manager_dump(Manager *m, FILE *f, const char *prefix) { |
2117 | ManagerTimestamp q; | |
2118 | ||
2119 | assert(m); | |
2120 | assert(f); | |
2121 | ||
2122 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
34541295 ZJS |
2123 | const dual_timestamp *t = m->timestamps + q; |
2124 | char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_TIMESTAMP_MAX)]; | |
ad75b9e7 | 2125 | |
34541295 | 2126 | if (dual_timestamp_is_set(t)) |
ad75b9e7 LP |
2127 | fprintf(f, "%sTimestamp %s: %s\n", |
2128 | strempty(prefix), | |
2129 | manager_timestamp_to_string(q), | |
34541295 ZJS |
2130 | timestamp_is_set(t->realtime) ? format_timestamp(buf, sizeof buf, t->realtime) : |
2131 | format_timespan(buf, sizeof buf, t->monotonic, 1)); | |
ad75b9e7 LP |
2132 | } |
2133 | ||
2134 | manager_dump_units(m, f, prefix); | |
2135 | manager_dump_jobs(m, f, prefix); | |
2136 | } | |
2137 | ||
713f6f90 LP |
2138 | int manager_get_dump_string(Manager *m, char **ret) { |
2139 | _cleanup_free_ char *dump = NULL; | |
2140 | _cleanup_fclose_ FILE *f = NULL; | |
2141 | size_t size; | |
2142 | int r; | |
2143 | ||
2144 | assert(m); | |
2145 | assert(ret); | |
2146 | ||
2fe21124 | 2147 | f = open_memstream_unlocked(&dump, &size); |
713f6f90 LP |
2148 | if (!f) |
2149 | return -errno; | |
2150 | ||
713f6f90 LP |
2151 | manager_dump(m, f, NULL); |
2152 | ||
2153 | r = fflush_and_check(f); | |
2154 | if (r < 0) | |
2155 | return r; | |
2156 | ||
2157 | f = safe_fclose(f); | |
2158 | ||
1cc6c93a | 2159 | *ret = TAKE_PTR(dump); |
713f6f90 LP |
2160 | |
2161 | return 0; | |
2162 | } | |
2163 | ||
7fad411c LP |
2164 | void manager_clear_jobs(Manager *m) { |
2165 | Job *j; | |
2166 | ||
2167 | assert(m); | |
2168 | ||
7fad411c | 2169 | while ((j = hashmap_first(m->jobs))) |
5273510e | 2170 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 2171 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 2172 | } |
83c60c9f | 2173 | |
f75f613d FB |
2174 | void manager_unwatch_pid(Manager *m, pid_t pid) { |
2175 | assert(m); | |
2176 | ||
2177 | /* First let's drop the unit keyed as "pid". */ | |
2178 | (void) hashmap_remove(m->watch_pids, PID_TO_PTR(pid)); | |
2179 | ||
2180 | /* Then, let's also drop the array keyed by -pid. */ | |
2181 | free(hashmap_remove(m->watch_pids, PID_TO_PTR(-pid))); | |
2182 | } | |
2183 | ||
752b5905 LP |
2184 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
2185 | Manager *m = userdata; | |
83c60c9f | 2186 | Job *j; |
034c6ed7 | 2187 | |
752b5905 LP |
2188 | assert(source); |
2189 | assert(m); | |
9152c765 | 2190 | |
da8e1782 | 2191 | while ((j = prioq_peek(m->run_queue))) { |
ac1135be | 2192 | assert(j->installed); |
034c6ed7 LP |
2193 | assert(j->in_run_queue); |
2194 | ||
6e64994d | 2195 | (void) job_run_and_invalidate(j); |
9152c765 | 2196 | } |
034c6ed7 | 2197 | |
a0b64226 | 2198 | if (m->n_running_jobs > 0) |
03b717a3 MS |
2199 | manager_watch_jobs_in_progress(m); |
2200 | ||
31a7eb86 ZJS |
2201 | if (m->n_on_console > 0) |
2202 | manager_watch_idle_pipe(m); | |
2203 | ||
752b5905 | 2204 | return 1; |
c1e1601e LP |
2205 | } |
2206 | ||
9588bc32 | 2207 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
e0a08581 | 2208 | unsigned n = 0, budget; |
595ed347 | 2209 | Unit *u; |
e0a08581 | 2210 | Job *j; |
c1e1601e LP |
2211 | |
2212 | assert(m); | |
2213 | ||
b8d381c4 LP |
2214 | /* When we are reloading, let's not wait with generating signals, since we need to exit the manager as quickly |
2215 | * as we can. There's no point in throttling generation of signals in that case. */ | |
2216 | if (MANAGER_IS_RELOADING(m) || m->send_reloading_done || m->pending_reload_message) | |
2217 | budget = (unsigned) -1; /* infinite budget in this case */ | |
2218 | else { | |
2219 | /* Anything to do at all? */ | |
2220 | if (!m->dbus_unit_queue && !m->dbus_job_queue) | |
2221 | return 0; | |
2222 | ||
2223 | /* Do we have overly many messages queued at the moment? If so, let's not enqueue more on top, let's | |
2224 | * sit this cycle out, and process things in a later cycle when the queues got a bit emptier. */ | |
2225 | if (manager_bus_n_queued_write(m) > MANAGER_BUS_BUSY_THRESHOLD) | |
2226 | return 0; | |
2227 | ||
2228 | /* Only process a certain number of units/jobs per event loop iteration. Even if the bus queue wasn't | |
2229 | * overly full before this call we shouldn't increase it in size too wildly in one step, and we | |
2230 | * shouldn't monopolize CPU time with generating these messages. Note the difference in counting of | |
2231 | * this "budget" and the "threshold" above: the "budget" is decreased only once per generated message, | |
5238e957 BB |
2232 | * regardless how many buses/direct connections it is enqueued on, while the "threshold" is applied to |
2233 | * each queued instance of bus message, i.e. if the same message is enqueued to five buses/direct | |
b8d381c4 LP |
2234 | * connections it will be counted five times. This difference in counting ("references" |
2235 | * vs. "instances") is primarily a result of the fact that it's easier to implement it this way, | |
2236 | * however it also reflects the thinking that the "threshold" should put a limit on used queue memory, | |
2237 | * i.e. space, while the "budget" should put a limit on time. Also note that the "threshold" is | |
2238 | * currently chosen much higher than the "budget". */ | |
2239 | budget = MANAGER_BUS_MESSAGE_BUDGET; | |
2240 | } | |
e0a08581 | 2241 | |
b8d381c4 | 2242 | while (budget != 0 && (u = m->dbus_unit_queue)) { |
e0a08581 | 2243 | |
595ed347 | 2244 | assert(u->in_dbus_queue); |
c1e1601e | 2245 | |
595ed347 | 2246 | bus_unit_send_change_signal(u); |
b8d381c4 LP |
2247 | n++; |
2248 | ||
2249 | if (budget != (unsigned) -1) | |
2250 | budget--; | |
c1e1601e LP |
2251 | } |
2252 | ||
b8d381c4 | 2253 | while (budget != 0 && (j = m->dbus_job_queue)) { |
c1e1601e LP |
2254 | assert(j->in_dbus_queue); |
2255 | ||
2256 | bus_job_send_change_signal(j); | |
b8d381c4 LP |
2257 | n++; |
2258 | ||
2259 | if (budget != (unsigned) -1) | |
2260 | budget--; | |
c1e1601e LP |
2261 | } |
2262 | ||
b8d381c4 | 2263 | if (m->send_reloading_done) { |
71445ae7 | 2264 | m->send_reloading_done = false; |
718db961 | 2265 | bus_manager_send_reloading(m, false); |
b8d381c4 | 2266 | n++; |
71445ae7 LP |
2267 | } |
2268 | ||
b8d381c4 | 2269 | if (m->pending_reload_message) { |
209de525 | 2270 | bus_send_pending_reload_message(m); |
e0a08581 LP |
2271 | n++; |
2272 | } | |
718db961 | 2273 | |
c1e1601e | 2274 | return n; |
9152c765 LP |
2275 | } |
2276 | ||
d8fdc620 LP |
2277 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2278 | Manager *m = userdata; | |
60473f0c | 2279 | char buf[PATH_MAX]; |
d8fdc620 LP |
2280 | ssize_t n; |
2281 | ||
2282 | n = recv(fd, buf, sizeof(buf), 0); | |
2283 | if (n < 0) | |
2284 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
2285 | if (n == 0) { | |
2286 | log_error("Got zero-length cgroups agent message, ignoring."); | |
2287 | return 0; | |
2288 | } | |
2289 | if ((size_t) n >= sizeof(buf)) { | |
2290 | log_error("Got overly long cgroups agent message, ignoring."); | |
2291 | return 0; | |
2292 | } | |
2293 | ||
2294 | if (memchr(buf, 0, n)) { | |
2295 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
2296 | return 0; | |
2297 | } | |
2298 | buf[n] = 0; | |
2299 | ||
2300 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 2301 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
2302 | |
2303 | return 0; | |
2304 | } | |
2305 | ||
5151b4cc | 2306 | static bool manager_process_barrier_fd(char * const *tags, FDSet *fds) { |
4f07ddfa KKD |
2307 | |
2308 | /* nothing else must be sent when using BARRIER=1 */ | |
5151b4cc BR |
2309 | if (strv_contains(tags, "BARRIER=1")) { |
2310 | if (strv_length(tags) == 1) { | |
2311 | if (fdset_size(fds) != 1) | |
2312 | log_warning("Got incorrect number of fds with BARRIER=1, closing them."); | |
2313 | } else | |
2314 | log_warning("Extra notification messages sent with BARRIER=1, ignoring everything."); | |
2315 | ||
2316 | /* Drop the message if BARRIER=1 was found */ | |
4f07ddfa | 2317 | return true; |
5151b4cc | 2318 | } |
4f07ddfa KKD |
2319 | |
2320 | return false; | |
2321 | } | |
2322 | ||
db256aab LP |
2323 | static void manager_invoke_notify_message( |
2324 | Manager *m, | |
2325 | Unit *u, | |
2326 | const struct ucred *ucred, | |
5151b4cc | 2327 | char * const *tags, |
db256aab LP |
2328 | FDSet *fds) { |
2329 | ||
5ba6985b LP |
2330 | assert(m); |
2331 | assert(u); | |
db256aab | 2332 | assert(ucred); |
5151b4cc | 2333 | assert(tags); |
5ba6985b | 2334 | |
62a76913 | 2335 | if (u->notifygen == m->notifygen) /* Already invoked on this same unit in this same iteration? */ |
5ba6985b | 2336 | return; |
62a76913 LP |
2337 | u->notifygen = m->notifygen; |
2338 | ||
5151b4cc | 2339 | if (UNIT_VTABLE(u)->notify_message) |
db256aab | 2340 | UNIT_VTABLE(u)->notify_message(u, ucred, tags, fds); |
62a76913 | 2341 | |
5151b4cc BR |
2342 | else if (DEBUG_LOGGING) { |
2343 | _cleanup_free_ char *buf = NULL, *x = NULL, *y = NULL; | |
a86b7675 | 2344 | |
5151b4cc BR |
2345 | buf = strv_join(tags, ", "); |
2346 | if (buf) | |
2347 | x = ellipsize(buf, 20, 90); | |
a86b7675 | 2348 | if (x) |
da5fb861 LP |
2349 | y = cescape(x); |
2350 | ||
a86b7675 ZJS |
2351 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); |
2352 | } | |
5ba6985b LP |
2353 | } |
2354 | ||
718db961 | 2355 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 2356 | |
b215b0ed | 2357 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 2358 | Manager *m = userdata; |
b215b0ed DH |
2359 | char buf[NOTIFY_BUFFER_MAX+1]; |
2360 | struct iovec iovec = { | |
2361 | .iov_base = buf, | |
2362 | .iov_len = sizeof(buf)-1, | |
2363 | }; | |
fb29cdbe LP |
2364 | CMSG_BUFFER_TYPE(CMSG_SPACE(sizeof(struct ucred)) + |
2365 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)) control; | |
b215b0ed DH |
2366 | struct msghdr msghdr = { |
2367 | .msg_iov = &iovec, | |
2368 | .msg_iovlen = 1, | |
2369 | .msg_control = &control, | |
2370 | .msg_controllen = sizeof(control), | |
2371 | }; | |
2372 | ||
2373 | struct cmsghdr *cmsg; | |
2374 | struct ucred *ucred = NULL; | |
62a76913 | 2375 | _cleanup_free_ Unit **array_copy = NULL; |
5151b4cc | 2376 | _cleanup_strv_free_ char **tags = NULL; |
62a76913 | 2377 | Unit *u1, *u2, **array; |
b215b0ed | 2378 | int r, *fd_array = NULL; |
da6053d0 | 2379 | size_t n_fds = 0; |
62a76913 | 2380 | bool found = false; |
8c47c732 LP |
2381 | ssize_t n; |
2382 | ||
2383 | assert(m); | |
718db961 LP |
2384 | assert(m->notify_fd == fd); |
2385 | ||
2386 | if (revents != EPOLLIN) { | |
2387 | log_warning("Got unexpected poll event for notify fd."); | |
2388 | return 0; | |
2389 | } | |
8c47c732 | 2390 | |
3691bcf3 LP |
2391 | n = recvmsg_safe(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
2392 | if (IN_SET(n, -EAGAIN, -EINTR)) | |
2393 | return 0; /* Spurious wakeup, try again */ | |
2394 | if (n < 0) | |
2395 | /* If this is any other, real error, then let's stop processing this socket. This of course | |
2396 | * means we won't take notification messages anymore, but that's still better than busy | |
2397 | * looping around this: being woken up over and over again but being unable to actually read | |
2398 | * the message off the socket. */ | |
2399 | return log_error_errno(n, "Failed to receive notification message: %m"); | |
a354329f | 2400 | |
b215b0ed DH |
2401 | CMSG_FOREACH(cmsg, &msghdr) { |
2402 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 2403 | |
3691bcf3 | 2404 | assert(!fd_array); |
b215b0ed DH |
2405 | fd_array = (int*) CMSG_DATA(cmsg); |
2406 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 2407 | |
b215b0ed DH |
2408 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
2409 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
2410 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 2411 | |
3691bcf3 | 2412 | assert(!ucred); |
b215b0ed | 2413 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 2414 | } |
b215b0ed | 2415 | } |
a354329f | 2416 | |
b215b0ed DH |
2417 | if (n_fds > 0) { |
2418 | assert(fd_array); | |
a354329f | 2419 | |
b215b0ed DH |
2420 | r = fdset_new_array(&fds, fd_array, n_fds); |
2421 | if (r < 0) { | |
2422 | close_many(fd_array, n_fds); | |
9987750e FB |
2423 | log_oom(); |
2424 | return 0; | |
a354329f | 2425 | } |
b215b0ed | 2426 | } |
8c47c732 | 2427 | |
15e23e8c | 2428 | if (!ucred || !pid_is_valid(ucred->pid)) { |
b215b0ed DH |
2429 | log_warning("Received notify message without valid credentials. Ignoring."); |
2430 | return 0; | |
2431 | } | |
8c47c732 | 2432 | |
045a3d59 | 2433 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
2434 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
2435 | return 0; | |
2436 | } | |
8c47c732 | 2437 | |
875ca88d LP |
2438 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
2439 | * trailing NUL byte in the message, but don't expect it. */ | |
2440 | if (n > 1 && memchr(buf, 0, n-1)) { | |
2441 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
2442 | return 0; | |
2443 | } | |
2444 | ||
5151b4cc | 2445 | /* Make sure it's NUL-terminated, then parse it to obtain the tags list */ |
b215b0ed | 2446 | buf[n] = 0; |
5151b4cc BR |
2447 | tags = strv_split_newlines(buf); |
2448 | if (!tags) { | |
2449 | log_oom(); | |
2450 | return 0; | |
2451 | } | |
8c47c732 | 2452 | |
4f07ddfa | 2453 | /* possibly a barrier fd, let's see */ |
5151b4cc | 2454 | if (manager_process_barrier_fd(tags, fds)) |
4f07ddfa KKD |
2455 | return 0; |
2456 | ||
62a76913 LP |
2457 | /* Increase the generation counter used for filtering out duplicate unit invocations. */ |
2458 | m->notifygen++; | |
2459 | ||
2460 | /* Notify every unit that might be interested, which might be multiple. */ | |
b215b0ed | 2461 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); |
62a76913 LP |
2462 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(ucred->pid)); |
2463 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-ucred->pid)); | |
2464 | if (array) { | |
2465 | size_t k = 0; | |
5ba6985b | 2466 | |
62a76913 LP |
2467 | while (array[k]) |
2468 | k++; | |
5ba6985b | 2469 | |
62a76913 LP |
2470 | array_copy = newdup(Unit*, array, k+1); |
2471 | if (!array_copy) | |
2472 | log_oom(); | |
2473 | } | |
2474 | /* And now invoke the per-unit callbacks. Note that manager_invoke_notify_message() will handle duplicate units | |
2475 | * make sure we only invoke each unit's handler once. */ | |
2476 | if (u1) { | |
5151b4cc | 2477 | manager_invoke_notify_message(m, u1, ucred, tags, fds); |
62a76913 LP |
2478 | found = true; |
2479 | } | |
2480 | if (u2) { | |
5151b4cc | 2481 | manager_invoke_notify_message(m, u2, ucred, tags, fds); |
62a76913 LP |
2482 | found = true; |
2483 | } | |
2484 | if (array_copy) | |
2485 | for (size_t i = 0; array_copy[i]; i++) { | |
5151b4cc | 2486 | manager_invoke_notify_message(m, array_copy[i], ucred, tags, fds); |
62a76913 LP |
2487 | found = true; |
2488 | } | |
8c47c732 | 2489 | |
62a76913 LP |
2490 | if (!found) |
2491 | log_warning("Cannot find unit for notify message of PID "PID_FMT", ignoring.", ucred->pid); | |
a354329f | 2492 | |
b215b0ed | 2493 | if (fdset_size(fds) > 0) |
5fd2c135 | 2494 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
2495 | |
2496 | return 0; | |
2497 | } | |
2498 | ||
62a76913 LP |
2499 | static void manager_invoke_sigchld_event( |
2500 | Manager *m, | |
2501 | Unit *u, | |
2502 | const siginfo_t *si) { | |
36f20ae3 | 2503 | |
5ba6985b LP |
2504 | assert(m); |
2505 | assert(u); | |
2506 | assert(si); | |
2507 | ||
62a76913 LP |
2508 | /* Already invoked the handler of this unit in this iteration? Then don't process this again */ |
2509 | if (u->sigchldgen == m->sigchldgen) | |
2510 | return; | |
2511 | u->sigchldgen = m->sigchldgen; | |
5ba6985b | 2512 | |
62a76913 | 2513 | log_unit_debug(u, "Child "PID_FMT" belongs to %s.", si->si_pid, u->id); |
5ba6985b | 2514 | unit_unwatch_pid(u, si->si_pid); |
e57051f5 | 2515 | |
62a76913 LP |
2516 | if (UNIT_VTABLE(u)->sigchld_event) |
2517 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
5ba6985b LP |
2518 | } |
2519 | ||
575b300b LP |
2520 | static int manager_dispatch_sigchld(sd_event_source *source, void *userdata) { |
2521 | Manager *m = userdata; | |
2522 | siginfo_t si = {}; | |
2523 | int r; | |
2524 | ||
2525 | assert(source); | |
9152c765 LP |
2526 | assert(m); |
2527 | ||
0a51b45c | 2528 | /* First we call waitid() for a PID and do not reap the zombie. That way we can still access /proc/$PID for it |
575b300b | 2529 | * while it is a zombie. */ |
9152c765 | 2530 | |
575b300b | 2531 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { |
acbb0225 | 2532 | |
8afabc50 AJ |
2533 | if (errno != ECHILD) |
2534 | log_error_errno(errno, "Failed to peek for child with waitid(), ignoring: %m"); | |
acbb0225 | 2535 | |
8afabc50 | 2536 | goto turn_off; |
575b300b | 2537 | } |
4112df16 | 2538 | |
575b300b LP |
2539 | if (si.si_pid <= 0) |
2540 | goto turn_off; | |
2541 | ||
2542 | if (IN_SET(si.si_code, CLD_EXITED, CLD_KILLED, CLD_DUMPED)) { | |
62a76913 | 2543 | _cleanup_free_ Unit **array_copy = NULL; |
575b300b | 2544 | _cleanup_free_ char *name = NULL; |
62a76913 | 2545 | Unit *u1, *u2, **array; |
575b300b LP |
2546 | |
2547 | (void) get_process_comm(si.si_pid, &name); | |
2548 | ||
2549 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
2550 | si.si_pid, strna(name), | |
2551 | sigchld_code_to_string(si.si_code), | |
2552 | si.si_status, | |
2553 | strna(si.si_code == CLD_EXITED | |
2554 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2555 | : signal_to_string(si.si_status))); | |
2556 | ||
62a76913 LP |
2557 | /* Increase the generation counter used for filtering out duplicate unit invocations */ |
2558 | m->sigchldgen++; | |
2559 | ||
2560 | /* And now figure out the unit this belongs to, it might be multiple... */ | |
575b300b | 2561 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
62a76913 LP |
2562 | u2 = hashmap_get(m->watch_pids, PID_TO_PTR(si.si_pid)); |
2563 | array = hashmap_get(m->watch_pids, PID_TO_PTR(-si.si_pid)); | |
2564 | if (array) { | |
2565 | size_t n = 0; | |
2566 | ||
5238e957 | 2567 | /* Count how many entries the array has */ |
62a76913 LP |
2568 | while (array[n]) |
2569 | n++; | |
2570 | ||
2571 | /* Make a copy of the array so that we don't trip up on the array changing beneath us */ | |
2572 | array_copy = newdup(Unit*, array, n+1); | |
2573 | if (!array_copy) | |
2574 | log_oom(); | |
2575 | } | |
2576 | ||
2577 | /* Finally, execute them all. Note that u1, u2 and the array might contain duplicates, but | |
2578 | * that's fine, manager_invoke_sigchld_event() will ensure we only invoke the handlers once for | |
2579 | * each iteration. */ | |
2ba6ae6b ZJS |
2580 | if (u1) { |
2581 | /* We check for oom condition, in case we got SIGCHLD before the oom notification. | |
2582 | * We only do this for the cgroup the PID belonged to. */ | |
2583 | (void) unit_check_oom(u1); | |
2584 | ||
62a76913 | 2585 | manager_invoke_sigchld_event(m, u1, &si); |
2ba6ae6b | 2586 | } |
62a76913 LP |
2587 | if (u2) |
2588 | manager_invoke_sigchld_event(m, u2, &si); | |
2589 | if (array_copy) | |
2590 | for (size_t i = 0; array_copy[i]; i++) | |
2591 | manager_invoke_sigchld_event(m, array_copy[i], &si); | |
575b300b | 2592 | } |
9152c765 | 2593 | |
575b300b LP |
2594 | /* And now, we actually reap the zombie. */ |
2595 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2596 | log_error_errno(errno, "Failed to dequeue child, ignoring: %m"); | |
2597 | return 0; | |
2598 | } | |
9152c765 | 2599 | |
575b300b | 2600 | return 0; |
8c47c732 | 2601 | |
575b300b LP |
2602 | turn_off: |
2603 | /* All children processed for now, turn off event source */ | |
4112df16 | 2604 | |
575b300b LP |
2605 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_OFF); |
2606 | if (r < 0) | |
2607 | return log_error_errno(r, "Failed to disable SIGCHLD event source: %m"); | |
9152c765 LP |
2608 | |
2609 | return 0; | |
2610 | } | |
2611 | ||
c75fbada | 2612 | static void manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 2613 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 2614 | int r; |
398ef8ba | 2615 | |
f2341e0a | 2616 | log_debug("Activating special unit %s", name); |
1e001f52 | 2617 | |
50cbaba4 | 2618 | r = manager_add_job_by_name(m, JOB_START, name, mode, NULL, &error, NULL); |
bd0af849 | 2619 | if (r < 0) |
f2341e0a | 2620 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
28247076 LP |
2621 | } |
2622 | ||
24dd31c1 LN |
2623 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2624 | /* If the user presses C-A-D more than | |
2625 | * 7 times within 2s, we reboot/shutdown immediately, | |
2626 | * unless it was disabled in system.conf */ | |
2627 | ||
7994ac1d | 2628 | if (ratelimit_below(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 2629 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 | 2630 | else |
7af67e9a | 2631 | emergency_action(m, m->cad_burst_action, EMERGENCY_ACTION_WARN, NULL, -1, |
ae8c7939 | 2632 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); |
24dd31c1 LN |
2633 | } |
2634 | ||
718db961 LP |
2635 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2636 | Manager *m = userdata; | |
9152c765 LP |
2637 | ssize_t n; |
2638 | struct signalfd_siginfo sfsi; | |
dacd6cee | 2639 | int r; |
9152c765 LP |
2640 | |
2641 | assert(m); | |
718db961 LP |
2642 | assert(m->signal_fd == fd); |
2643 | ||
2644 | if (revents != EPOLLIN) { | |
2645 | log_warning("Got unexpected events from signal file descriptor."); | |
2646 | return 0; | |
2647 | } | |
9152c765 | 2648 | |
575b300b LP |
2649 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
2650 | if (n != sizeof(sfsi)) { | |
2651 | if (n >= 0) { | |
2652 | log_warning("Truncated read from signal fd (%zu bytes), ignoring!", n); | |
2653 | return 0; | |
2654 | } | |
9152c765 | 2655 | |
575b300b LP |
2656 | if (IN_SET(errno, EINTR, EAGAIN)) |
2657 | return 0; | |
9152c765 | 2658 | |
575b300b LP |
2659 | /* We return an error here, which will kill this handler, |
2660 | * to avoid a busy loop on read error. */ | |
2661 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
2662 | } | |
9152c765 | 2663 | |
575b300b LP |
2664 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
2665 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) | |
2666 | ? LOG_DEBUG : LOG_INFO, | |
2667 | &sfsi); | |
1e001f52 | 2668 | |
575b300b | 2669 | switch (sfsi.ssi_signo) { |
b9cd2ec1 | 2670 | |
575b300b LP |
2671 | case SIGCHLD: |
2672 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
2673 | if (r < 0) | |
8afabc50 | 2674 | log_warning_errno(r, "Failed to enable SIGCHLD event source, ignoring: %m"); |
b9cd2ec1 | 2675 | |
575b300b | 2676 | break; |
84e9af1e | 2677 | |
575b300b LP |
2678 | case SIGTERM: |
2679 | if (MANAGER_IS_SYSTEM(m)) { | |
ba0c7754 | 2680 | /* This is for compatibility with the original sysvinit */ |
c52b19d6 LP |
2681 | if (verify_run_space_and_log("Refusing to reexecute") < 0) |
2682 | break; | |
2683 | ||
2684 | m->objective = MANAGER_REEXECUTE; | |
a1b256b0 | 2685 | break; |
575b300b | 2686 | } |
84e9af1e | 2687 | |
575b300b LP |
2688 | _fallthrough_; |
2689 | case SIGINT: | |
2690 | if (MANAGER_IS_SYSTEM(m)) | |
2691 | manager_handle_ctrl_alt_del(m); | |
2692 | else | |
2693 | manager_start_target(m, SPECIAL_EXIT_TARGET, | |
2694 | JOB_REPLACE_IRREVERSIBLY); | |
2695 | break; | |
84e9af1e | 2696 | |
575b300b | 2697 | case SIGWINCH: |
ba0c7754 | 2698 | /* This is a nop on non-init */ |
575b300b LP |
2699 | if (MANAGER_IS_SYSTEM(m)) |
2700 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); | |
84e9af1e | 2701 | |
575b300b | 2702 | break; |
84e9af1e | 2703 | |
575b300b | 2704 | case SIGPWR: |
ba0c7754 | 2705 | /* This is a nop on non-init */ |
575b300b LP |
2706 | if (MANAGER_IS_SYSTEM(m)) |
2707 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); | |
6632c602 | 2708 | |
575b300b | 2709 | break; |
57ee42ce | 2710 | |
8559b3b7 | 2711 | case SIGUSR1: |
8559b3b7 | 2712 | if (manager_dbus_is_running(m, false)) { |
575b300b | 2713 | log_info("Trying to reconnect to bus..."); |
575b300b | 2714 | |
8559b3b7 LP |
2715 | (void) bus_init_api(m); |
2716 | ||
2717 | if (MANAGER_IS_SYSTEM(m)) | |
2718 | (void) bus_init_system(m); | |
2719 | } else { | |
2720 | log_info("Starting D-Bus service..."); | |
575b300b LP |
2721 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
2722 | } | |
57ee42ce | 2723 | |
575b300b | 2724 | break; |
575b300b LP |
2725 | |
2726 | case SIGUSR2: { | |
2727 | _cleanup_free_ char *dump = NULL; | |
2728 | ||
2729 | r = manager_get_dump_string(m, &dump); | |
2730 | if (r < 0) { | |
2731 | log_warning_errno(errno, "Failed to acquire manager dump: %m"); | |
57ee42ce LP |
2732 | break; |
2733 | } | |
2734 | ||
575b300b LP |
2735 | log_dump(LOG_INFO, dump); |
2736 | break; | |
2737 | } | |
2149e37c | 2738 | |
575b300b | 2739 | case SIGHUP: |
c52b19d6 LP |
2740 | if (verify_run_space_and_log("Refusing to reload") < 0) |
2741 | break; | |
2742 | ||
2743 | m->objective = MANAGER_RELOAD; | |
575b300b LP |
2744 | break; |
2745 | ||
2746 | default: { | |
2747 | ||
2748 | /* Starting SIGRTMIN+0 */ | |
2749 | static const struct { | |
2750 | const char *target; | |
2751 | JobMode mode; | |
2752 | } target_table[] = { | |
2753 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2754 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2755 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2756 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2757 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2758 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2759 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2760 | }; | |
2761 | ||
2762 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
af41e508 | 2763 | static const ManagerObjective objective_table[] = { |
575b300b LP |
2764 | [0] = MANAGER_HALT, |
2765 | [1] = MANAGER_POWEROFF, | |
2766 | [2] = MANAGER_REBOOT, | |
2767 | [3] = MANAGER_KEXEC, | |
2768 | }; | |
b2cdc666 | 2769 | |
575b300b LP |
2770 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && |
2771 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
2772 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
2773 | manager_start_target(m, target_table[idx].target, | |
2774 | target_table[idx].mode); | |
1005d14f | 2775 | break; |
2149e37c | 2776 | } |
1005d14f | 2777 | |
575b300b | 2778 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
af41e508 LP |
2779 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(objective_table)) { |
2780 | m->objective = objective_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
575b300b LP |
2781 | break; |
2782 | } | |
2783 | ||
2784 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
2785 | ||
2786 | case 20: | |
43bba15a | 2787 | manager_override_show_status(m, SHOW_STATUS_YES, "signal"); |
a16e1123 LP |
2788 | break; |
2789 | ||
575b300b | 2790 | case 21: |
43bba15a | 2791 | manager_override_show_status(m, SHOW_STATUS_NO, "signal"); |
575b300b | 2792 | break; |
7d793605 | 2793 | |
575b300b | 2794 | case 22: |
a6ecbf83 | 2795 | manager_override_log_level(m, LOG_DEBUG); |
575b300b LP |
2796 | break; |
2797 | ||
2798 | case 23: | |
a6ecbf83 | 2799 | manager_restore_original_log_level(m); |
575b300b | 2800 | break; |
0003d1ab | 2801 | |
575b300b LP |
2802 | case 24: |
2803 | if (MANAGER_IS_USER(m)) { | |
af41e508 | 2804 | m->objective = MANAGER_EXIT; |
575b300b | 2805 | return 0; |
0658666b | 2806 | } |
9152c765 | 2807 | |
575b300b LP |
2808 | /* This is a nop on init */ |
2809 | break; | |
2810 | ||
2811 | case 26: | |
2812 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
bda7d78b | 2813 | manager_restore_original_log_target(m); |
575b300b LP |
2814 | break; |
2815 | ||
2816 | case 27: | |
bda7d78b | 2817 | manager_override_log_target(m, LOG_TARGET_CONSOLE); |
575b300b LP |
2818 | break; |
2819 | ||
2820 | case 28: | |
bda7d78b | 2821 | manager_override_log_target(m, LOG_TARGET_KMSG); |
575b300b LP |
2822 | break; |
2823 | ||
2824 | default: | |
2825 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
2826 | } | |
2827 | }} | |
034c6ed7 LP |
2828 | |
2829 | return 0; | |
2830 | } | |
2831 | ||
718db961 LP |
2832 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2833 | Manager *m = userdata; | |
718db961 | 2834 | Unit *u; |
034c6ed7 LP |
2835 | |
2836 | assert(m); | |
718db961 | 2837 | assert(m->time_change_fd == fd); |
034c6ed7 | 2838 | |
a80c1575 | 2839 | log_struct(LOG_DEBUG, |
2b044526 | 2840 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
a1230ff9 | 2841 | LOG_MESSAGE("Time has been changed")); |
034c6ed7 | 2842 | |
718db961 | 2843 | /* Restart the watch */ |
7feedd18 | 2844 | (void) manager_setup_time_change(m); |
4e434314 | 2845 | |
90e74a66 | 2846 | HASHMAP_FOREACH(u, m->units) |
718db961 LP |
2847 | if (UNIT_VTABLE(u)->time_change) |
2848 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2849 | |
718db961 LP |
2850 | return 0; |
2851 | } | |
ea430986 | 2852 | |
bbf5fd8e LP |
2853 | static int manager_dispatch_timezone_change( |
2854 | sd_event_source *source, | |
2855 | const struct inotify_event *e, | |
2856 | void *userdata) { | |
2857 | ||
2858 | Manager *m = userdata; | |
2859 | int changed; | |
bbf5fd8e LP |
2860 | Unit *u; |
2861 | ||
2862 | assert(m); | |
2863 | ||
2864 | log_debug("inotify event for /etc/localtime"); | |
2865 | ||
2866 | changed = manager_read_timezone_stat(m); | |
f20db199 | 2867 | if (changed <= 0) |
bbf5fd8e | 2868 | return changed; |
bbf5fd8e LP |
2869 | |
2870 | /* Something changed, restart the watch, to ensure we watch the new /etc/localtime if it changed */ | |
2871 | (void) manager_setup_timezone_change(m); | |
2872 | ||
2873 | /* Read the new timezone */ | |
2874 | tzset(); | |
2875 | ||
2876 | log_debug("Timezone has been changed (now: %s).", tzname[daylight]); | |
2877 | ||
90e74a66 | 2878 | HASHMAP_FOREACH(u, m->units) |
bbf5fd8e LP |
2879 | if (UNIT_VTABLE(u)->timezone_change) |
2880 | UNIT_VTABLE(u)->timezone_change(u); | |
2881 | ||
2882 | return 0; | |
2883 | } | |
2884 | ||
718db961 LP |
2885 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2886 | Manager *m = userdata; | |
8742514c | 2887 | |
718db961 LP |
2888 | assert(m); |
2889 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2890 | |
5a69973f LP |
2891 | /* There's at least one Type=idle child that just gave up on us waiting for the boot process to complete. Let's |
2892 | * now turn off any further console output if there's at least one service that needs console access, so that | |
2893 | * from now on our own output should not spill into that service's output anymore. After all, we support | |
2894 | * Type=idle only to beautify console output and it generally is set on services that want to own the console | |
2895 | * exclusively without our interference. */ | |
718db961 | 2896 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2897 | |
5a69973f LP |
2898 | /* Acknowledge the child's request, and let all all other children know too that they shouldn't wait any longer |
2899 | * by closing the pipes towards them, which is what they are waiting for. */ | |
718db961 | 2900 | manager_close_idle_pipe(m); |
03b717a3 | 2901 | |
718db961 LP |
2902 | return 0; |
2903 | } | |
31a7eb86 | 2904 | |
718db961 LP |
2905 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2906 | Manager *m = userdata; | |
fd08a840 | 2907 | int r; |
31a7eb86 | 2908 | |
718db961 | 2909 | assert(m); |
fd08a840 | 2910 | assert(source); |
9152c765 | 2911 | |
718db961 | 2912 | manager_print_jobs_in_progress(m); |
fd08a840 | 2913 | |
39cf0351 | 2914 | r = sd_event_source_set_time_relative(source, JOBS_IN_PROGRESS_PERIOD_USEC); |
fd08a840 ZJS |
2915 | if (r < 0) |
2916 | return r; | |
2917 | ||
2918 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2919 | } |
2920 | ||
2921 | int manager_loop(Manager *m) { | |
8c227e7f | 2922 | RateLimit rl = { .interval = 1*USEC_PER_SEC, .burst = 50000 }; |
9152c765 | 2923 | int r; |
9152c765 LP |
2924 | |
2925 | assert(m); | |
1fb70e66 | 2926 | assert(m->objective == MANAGER_OK); /* Ensure manager_startup() has been called */ |
9152c765 | 2927 | |
b0c918b9 LP |
2928 | manager_check_finished(m); |
2929 | ||
575b300b LP |
2930 | /* There might still be some zombies hanging around from before we were exec()'ed. Let's reap them. */ |
2931 | r = sd_event_source_set_enabled(m->sigchld_event_source, SD_EVENT_ON); | |
e96d6be7 | 2932 | if (r < 0) |
575b300b | 2933 | return log_error_errno(r, "Failed to enable SIGCHLD event source: %m"); |
a4312405 | 2934 | |
af41e508 | 2935 | while (m->objective == MANAGER_OK) { |
986935cf | 2936 | usec_t wait_usec, watchdog_usec; |
9152c765 | 2937 | |
986935cf FB |
2938 | watchdog_usec = manager_get_watchdog(m, WATCHDOG_RUNTIME); |
2939 | if (timestamp_is_set(watchdog_usec)) | |
e96d6be7 LP |
2940 | watchdog_ping(); |
2941 | ||
7994ac1d | 2942 | if (!ratelimit_below(&rl)) { |
ea430986 LP |
2943 | /* Yay, something is going seriously wrong, pause a little */ |
2944 | log_warning("Looping too fast. Throttling execution a little."); | |
2945 | sleep(1); | |
2946 | } | |
2947 | ||
37a8e683 | 2948 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2949 | continue; |
2950 | ||
c5a97ed1 LP |
2951 | if (manager_dispatch_gc_job_queue(m) > 0) |
2952 | continue; | |
2953 | ||
2954 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
2955 | continue; |
2956 | ||
cf1265e1 | 2957 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2958 | continue; |
034c6ed7 | 2959 | |
91a6073e | 2960 | if (manager_dispatch_cgroup_realize_queue(m) > 0) |
c1e1601e LP |
2961 | continue; |
2962 | ||
a3c1168a LP |
2963 | if (manager_dispatch_stop_when_unneeded_queue(m) > 0) |
2964 | continue; | |
2965 | ||
c1e1601e | 2966 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2967 | continue; |
ea430986 | 2968 | |
c5f8a179 | 2969 | /* Sleep for watchdog runtime wait time */ |
986935cf | 2970 | if (timestamp_is_set(watchdog_usec)) |
c5f8a179 AP |
2971 | wait_usec = watchdog_runtime_wait(); |
2972 | else | |
3a43da28 | 2973 | wait_usec = USEC_INFINITY; |
9152c765 | 2974 | |
718db961 | 2975 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2976 | if (r < 0) |
2977 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2978 | } |
957ca890 | 2979 | |
af41e508 | 2980 | return m->objective; |
83c60c9f | 2981 | } |
ea430986 | 2982 | |
718db961 | 2983 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2984 | _cleanup_free_ char *n = NULL; |
4b58153d | 2985 | sd_id128_t invocation_id; |
ea430986 | 2986 | Unit *u; |
80fbf05e | 2987 | int r; |
ea430986 LP |
2988 | |
2989 | assert(m); | |
2990 | assert(s); | |
2991 | assert(_u); | |
2992 | ||
ede3a796 LP |
2993 | r = unit_name_from_dbus_path(s, &n); |
2994 | if (r < 0) | |
2995 | return r; | |
ea430986 | 2996 | |
4b58153d LP |
2997 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
2998 | * as invocation ID. */ | |
2999 | r = sd_id128_from_string(n, &invocation_id); | |
3000 | if (r >= 0) { | |
3001 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
3002 | if (u) { | |
3003 | *_u = u; | |
3004 | return 0; | |
3005 | } | |
3006 | ||
930c124c ZJS |
3007 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, |
3008 | "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", | |
3009 | SD_ID128_FORMAT_VAL(invocation_id)); | |
4b58153d LP |
3010 | } |
3011 | ||
00c83b43 | 3012 | /* If this didn't work, we check if this is a unit name */ |
930c124c ZJS |
3013 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
3014 | _cleanup_free_ char *nn = NULL; | |
3015 | ||
3016 | nn = cescape(n); | |
3017 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, | |
3018 | "Unit name %s is neither a valid invocation ID nor unit name.", strnull(nn)); | |
3019 | } | |
00c83b43 | 3020 | |
80fbf05e | 3021 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
3022 | if (r < 0) |
3023 | return r; | |
ea430986 LP |
3024 | |
3025 | *_u = u; | |
ea430986 LP |
3026 | return 0; |
3027 | } | |
86fbf370 LP |
3028 | |
3029 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 3030 | const char *p; |
86fbf370 | 3031 | unsigned id; |
718db961 | 3032 | Job *j; |
86fbf370 LP |
3033 | int r; |
3034 | ||
3035 | assert(m); | |
3036 | assert(s); | |
3037 | assert(_j); | |
3038 | ||
718db961 LP |
3039 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
3040 | if (!p) | |
86fbf370 LP |
3041 | return -EINVAL; |
3042 | ||
718db961 | 3043 | r = safe_atou(p, &id); |
8742514c | 3044 | if (r < 0) |
86fbf370 LP |
3045 | return r; |
3046 | ||
8742514c LP |
3047 | j = manager_get_job(m, id); |
3048 | if (!j) | |
86fbf370 LP |
3049 | return -ENOENT; |
3050 | ||
3051 | *_j = j; | |
3052 | ||
3053 | return 0; | |
3054 | } | |
dfcd764e | 3055 | |
4927fcae | 3056 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 3057 | |
349cc4a5 | 3058 | #if HAVE_AUDIT |
2ba11090 | 3059 | _cleanup_free_ char *p = NULL; |
0aa281df | 3060 | const char *msg; |
7410616c | 3061 | int audit_fd, r; |
e537352b | 3062 | |
463d0d15 | 3063 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
3064 | return; |
3065 | ||
c1165f82 LP |
3066 | audit_fd = get_audit_fd(); |
3067 | if (audit_fd < 0) | |
e537352b LP |
3068 | return; |
3069 | ||
bbd3a7ba LP |
3070 | /* Don't generate audit events if the service was already |
3071 | * started and we're just deserializing */ | |
2c289ea8 | 3072 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
3073 | return; |
3074 | ||
ac155bb8 | 3075 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
3076 | return; |
3077 | ||
7410616c LP |
3078 | r = unit_name_to_prefix_and_instance(u->id, &p); |
3079 | if (r < 0) { | |
3080 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
3081 | return; |
3082 | } | |
3083 | ||
63c372cb | 3084 | msg = strjoina("unit=", p); |
0aa281df LP |
3085 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
3086 | if (errno == EPERM) | |
391ade86 | 3087 | /* We aren't allowed to send audit messages? |
44785992 | 3088 | * Then let's not retry again. */ |
c1165f82 | 3089 | close_audit_fd(); |
0aa281df | 3090 | else |
56f64d95 | 3091 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 3092 | } |
4927fcae | 3093 | #endif |
e537352b | 3094 | |
e537352b LP |
3095 | } |
3096 | ||
e983b760 | 3097 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 3098 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
3099 | _cleanup_free_ char *message = NULL; |
3100 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 3101 | int n = 0; |
e983b760 LP |
3102 | |
3103 | /* Don't generate plymouth events if the service was already | |
3104 | * started and we're just deserializing */ | |
2c289ea8 | 3105 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
3106 | return; |
3107 | ||
463d0d15 | 3108 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
3109 | return; |
3110 | ||
75f86906 | 3111 | if (detect_container() > 0) |
3772995a LP |
3112 | return; |
3113 | ||
ec2ce0c5 | 3114 | if (!IN_SET(u->type, UNIT_SERVICE, UNIT_MOUNT, UNIT_SWAP)) |
e983b760 LP |
3115 | return; |
3116 | ||
3117 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
3118 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
3119 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
3120 | if (fd < 0) { | |
56f64d95 | 3121 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
3122 | return; |
3123 | } | |
3124 | ||
fc2fffe7 | 3125 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
f60a028a | 3126 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3127 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 3128 | return; |
e983b760 LP |
3129 | } |
3130 | ||
ac155bb8 | 3131 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 3132 | log_oom(); |
2ba11090 | 3133 | return; |
e983b760 LP |
3134 | } |
3135 | ||
3136 | errno = 0; | |
2ba11090 | 3137 | if (write(fd, message, n + 1) != n + 1) |
f60a028a | 3138 | if (!IN_SET(errno, EAGAIN, ENOENT) && !ERRNO_IS_DISCONNECT(errno)) |
56f64d95 | 3139 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
3140 | } |
3141 | ||
d8d5ab98 | 3142 | int manager_open_serialization(Manager *m, FILE **_f) { |
b46c3e49 | 3143 | _cleanup_close_ int fd = -1; |
a16e1123 LP |
3144 | FILE *f; |
3145 | ||
3146 | assert(_f); | |
3147 | ||
504afd7c ZJS |
3148 | fd = open_serialization_fd("systemd-state"); |
3149 | if (fd < 0) | |
3150 | return fd; | |
a16e1123 | 3151 | |
b46c3e49 VC |
3152 | f = take_fdopen(&fd, "w+"); |
3153 | if (!f) | |
a16e1123 LP |
3154 | return -errno; |
3155 | ||
3156 | *_f = f; | |
a16e1123 LP |
3157 | return 0; |
3158 | } | |
3159 | ||
cdd620e3 LP |
3160 | static bool manager_timestamp_shall_serialize(ManagerTimestamp t) { |
3161 | ||
3162 | if (!in_initrd()) | |
3163 | return true; | |
3164 | ||
3165 | /* The following timestamps only apply to the host system, hence only serialize them there */ | |
3166 | return !IN_SET(t, | |
3167 | MANAGER_TIMESTAMP_USERSPACE, MANAGER_TIMESTAMP_FINISH, | |
3168 | MANAGER_TIMESTAMP_SECURITY_START, MANAGER_TIMESTAMP_SECURITY_FINISH, | |
3169 | MANAGER_TIMESTAMP_GENERATORS_START, MANAGER_TIMESTAMP_GENERATORS_FINISH, | |
3170 | MANAGER_TIMESTAMP_UNITS_LOAD_START, MANAGER_TIMESTAMP_UNITS_LOAD_FINISH); | |
3171 | } | |
3172 | ||
80f605c8 FB |
3173 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3174 | ||
3175 | static void manager_serialize_uid_refs_internal( | |
3176 | Manager *m, | |
3177 | FILE *f, | |
3178 | Hashmap **uid_refs, | |
3179 | const char *field_name) { | |
3180 | ||
80f605c8 FB |
3181 | void *p, *k; |
3182 | ||
3183 | assert(m); | |
3184 | assert(f); | |
3185 | assert(uid_refs); | |
3186 | assert(field_name); | |
3187 | ||
3188 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as | |
3189 | * the actual counter of it is better rebuild after a reload/reexec. */ | |
3190 | ||
90e74a66 | 3191 | HASHMAP_FOREACH_KEY(p, k, *uid_refs) { |
80f605c8 FB |
3192 | uint32_t c; |
3193 | uid_t uid; | |
3194 | ||
3195 | uid = PTR_TO_UID(k); | |
3196 | c = PTR_TO_UINT32(p); | |
3197 | ||
3198 | if (!(c & DESTROY_IPC_FLAG)) | |
3199 | continue; | |
3200 | ||
3201 | (void) serialize_item_format(f, field_name, UID_FMT, uid); | |
3202 | } | |
3203 | } | |
3204 | ||
3205 | static void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3206 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3207 | } | |
3208 | ||
3209 | static void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3210 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3211 | } | |
3212 | ||
4daf832a LP |
3213 | int manager_serialize( |
3214 | Manager *m, | |
3215 | FILE *f, | |
3216 | FDSet *fds, | |
3217 | bool switching_root) { | |
3218 | ||
9f9f0342 LP |
3219 | ManagerTimestamp q; |
3220 | const char *t; | |
a16e1123 | 3221 | Unit *u; |
a16e1123 LP |
3222 | int r; |
3223 | ||
3224 | assert(m); | |
3225 | assert(f); | |
3226 | assert(fds); | |
3227 | ||
cb16b085 | 3228 | _cleanup_(manager_reloading_stopp) _unused_ Manager *reloading = manager_reloading_start(m); |
38c52d46 | 3229 | |
d68c645b LP |
3230 | (void) serialize_item_format(f, "current-job-id", "%" PRIu32, m->current_job_id); |
3231 | (void) serialize_item_format(f, "n-installed-jobs", "%u", m->n_installed_jobs); | |
3232 | (void) serialize_item_format(f, "n-failed-jobs", "%u", m->n_failed_jobs); | |
3233 | (void) serialize_bool(f, "taint-usr", m->taint_usr); | |
3234 | (void) serialize_bool(f, "ready-sent", m->ready_sent); | |
3235 | (void) serialize_bool(f, "taint-logged", m->taint_logged); | |
3236 | (void) serialize_bool(f, "service-watchdogs", m->service_watchdogs); | |
01d67b43 | 3237 | |
c6e892bc YW |
3238 | /* After switching root, udevd has not been started yet. So, enumeration results should not be emitted. */ |
3239 | (void) serialize_bool(f, "honor-device-enumeration", !switching_root); | |
3240 | ||
44a41954 FB |
3241 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) |
3242 | (void) serialize_item(f, "show-status-overridden", | |
3243 | show_status_to_string(m->show_status_overridden)); | |
bee38b5c | 3244 | |
a6ecbf83 | 3245 | if (m->log_level_overridden) |
d68c645b | 3246 | (void) serialize_item_format(f, "log-level-override", "%i", log_get_max_level()); |
bda7d78b | 3247 | if (m->log_target_overridden) |
d68c645b | 3248 | (void) serialize_item(f, "log-target-override", log_target_to_string(log_get_target())); |
a6ecbf83 | 3249 | |
986935cf FB |
3250 | (void) serialize_usec(f, "runtime-watchdog-overridden", m->watchdog_overridden[WATCHDOG_RUNTIME]); |
3251 | (void) serialize_usec(f, "reboot-watchdog-overridden", m->watchdog_overridden[WATCHDOG_REBOOT]); | |
3252 | (void) serialize_usec(f, "kexec-watchdog-overridden", m->watchdog_overridden[WATCHDOG_KEXEC]); | |
3253 | ||
9f9f0342 | 3254 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { |
c475e57d LP |
3255 | _cleanup_free_ char *joined = NULL; |
3256 | ||
cdd620e3 | 3257 | if (!manager_timestamp_shall_serialize(q)) |
9f9f0342 | 3258 | continue; |
f38ed060 | 3259 | |
c475e57d LP |
3260 | joined = strjoin(manager_timestamp_to_string(q), "-timestamp"); |
3261 | if (!joined) | |
3262 | return log_oom(); | |
3263 | ||
d68c645b | 3264 | (void) serialize_dual_timestamp(f, joined, m->timestamps + q); |
f38ed060 | 3265 | } |
47a483a1 | 3266 | |
fe902fa4 | 3267 | if (!switching_root) |
1ad6e8b3 | 3268 | (void) serialize_strv(f, "env", m->client_environment); |
4a9fd066 | 3269 | |
d86f9d52 | 3270 | if (m->notify_fd >= 0) { |
d68c645b LP |
3271 | r = serialize_fd(f, fds, "notify-fd", m->notify_fd); |
3272 | if (r < 0) | |
3273 | return r; | |
d86f9d52 | 3274 | |
d68c645b | 3275 | (void) serialize_item(f, "notify-socket", m->notify_socket); |
d86f9d52 LP |
3276 | } |
3277 | ||
d8fdc620 | 3278 | if (m->cgroups_agent_fd >= 0) { |
d68c645b LP |
3279 | r = serialize_fd(f, fds, "cgroups-agent-fd", m->cgroups_agent_fd); |
3280 | if (r < 0) | |
3281 | return r; | |
d8fdc620 LP |
3282 | } |
3283 | ||
00d9ef85 LP |
3284 | if (m->user_lookup_fds[0] >= 0) { |
3285 | int copy0, copy1; | |
3286 | ||
3287 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
d147e2b6 | 3288 | if (copy0 < 0) |
d68c645b | 3289 | return log_error_errno(copy0, "Failed to add user lookup fd to serialization: %m"); |
00d9ef85 LP |
3290 | |
3291 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
d147e2b6 | 3292 | if (copy1 < 0) |
d68c645b | 3293 | return log_error_errno(copy1, "Failed to add user lookup fd to serialization: %m"); |
00d9ef85 | 3294 | |
d68c645b | 3295 | (void) serialize_item_format(f, "user-lookup", "%i %i", copy0, copy1); |
00d9ef85 LP |
3296 | } |
3297 | ||
05a98afd | 3298 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 3299 | |
29206d46 LP |
3300 | r = dynamic_user_serialize(m, f, fds); |
3301 | if (r < 0) | |
d147e2b6 | 3302 | return r; |
29206d46 | 3303 | |
00d9ef85 LP |
3304 | manager_serialize_uid_refs(m, f); |
3305 | manager_serialize_gid_refs(m, f); | |
3306 | ||
e8a565cb YW |
3307 | r = exec_runtime_serialize(m, f, fds); |
3308 | if (r < 0) | |
d147e2b6 | 3309 | return r; |
e8a565cb | 3310 | |
0d536673 | 3311 | (void) fputc('\n', f); |
f2382a94 | 3312 | |
90e74a66 | 3313 | HASHMAP_FOREACH_KEY(u, t, m->units) { |
ac155bb8 | 3314 | if (u->id != t) |
a16e1123 LP |
3315 | continue; |
3316 | ||
a16e1123 | 3317 | /* Start marker */ |
0d536673 LP |
3318 | fputs(u->id, f); |
3319 | fputc('\n', f); | |
a16e1123 | 3320 | |
6fa48533 | 3321 | r = unit_serialize(u, f, fds, !switching_root); |
4daf832a | 3322 | if (r < 0) |
d147e2b6 | 3323 | return r; |
a16e1123 LP |
3324 | } |
3325 | ||
01d32c00 LP |
3326 | r = fflush_and_check(f); |
3327 | if (r < 0) | |
d68c645b | 3328 | return log_error_errno(r, "Failed to flush serialization: %m"); |
a16e1123 | 3329 | |
b23de6af LP |
3330 | r = bus_fdset_add_all(m, fds); |
3331 | if (r < 0) | |
d68c645b | 3332 | return log_error_errno(r, "Failed to add bus sockets to serialization: %m"); |
4daf832a | 3333 | |
d147e2b6 | 3334 | return 0; |
a16e1123 LP |
3335 | } |
3336 | ||
651b3b6c FB |
3337 | static int manager_deserialize_one_unit(Manager *m, const char *name, FILE *f, FDSet *fds) { |
3338 | Unit *u; | |
3339 | int r; | |
3340 | ||
3341 | r = manager_load_unit(m, name, NULL, NULL, &u); | |
3342 | if (r < 0) { | |
3343 | if (r == -ENOMEM) | |
3344 | return r; | |
3345 | return log_notice_errno(r, "Failed to load unit \"%s\", skipping deserialization: %m", name); | |
3346 | } | |
3347 | ||
3348 | r = unit_deserialize(u, f, fds); | |
3349 | if (r < 0) { | |
3350 | if (r == -ENOMEM) | |
3351 | return r; | |
3352 | return log_notice_errno(r, "Failed to deserialize unit \"%s\", skipping: %m", name); | |
3353 | } | |
3354 | ||
3355 | return 0; | |
3356 | } | |
3357 | ||
3358 | static int manager_deserialize_units(Manager *m, FILE *f, FDSet *fds) { | |
651b3b6c FB |
3359 | const char *unit_name; |
3360 | int r; | |
3361 | ||
3362 | for (;;) { | |
7334ade4 | 3363 | _cleanup_free_ char *line = NULL; |
651b3b6c FB |
3364 | /* Start marker */ |
3365 | r = read_line(f, LONG_LINE_MAX, &line); | |
3366 | if (r < 0) | |
3367 | return log_error_errno(r, "Failed to read serialization line: %m"); | |
3368 | if (r == 0) | |
3369 | break; | |
3370 | ||
3371 | unit_name = strstrip(line); | |
3372 | ||
3373 | r = manager_deserialize_one_unit(m, unit_name, f, fds); | |
3374 | if (r == -ENOMEM) | |
3375 | return r; | |
3376 | if (r < 0) { | |
3377 | r = unit_deserialize_skip(f); | |
3378 | if (r < 0) | |
3379 | return r; | |
3380 | } | |
3381 | } | |
3382 | ||
3383 | return 0; | |
3384 | } | |
3385 | ||
986935cf FB |
3386 | usec_t manager_get_watchdog(Manager *m, WatchdogType t) { |
3387 | assert(m); | |
3388 | ||
3389 | if (MANAGER_IS_USER(m)) | |
3390 | return USEC_INFINITY; | |
3391 | ||
3392 | if (timestamp_is_set(m->watchdog_overridden[t])) | |
3393 | return m->watchdog_overridden[t]; | |
3394 | ||
3395 | return m->watchdog[t]; | |
3396 | } | |
3397 | ||
3398 | void manager_set_watchdog(Manager *m, WatchdogType t, usec_t timeout) { | |
3399 | int r = 0; | |
3400 | ||
3401 | assert(m); | |
3402 | ||
3403 | if (MANAGER_IS_USER(m)) | |
3404 | return; | |
3405 | ||
3406 | if (m->watchdog[t] == timeout) | |
3407 | return; | |
3408 | ||
3409 | if (t == WATCHDOG_RUNTIME) | |
3410 | if (!timestamp_is_set(m->watchdog_overridden[WATCHDOG_RUNTIME])) { | |
3411 | if (timestamp_is_set(timeout)) | |
3412 | r = watchdog_set_timeout(&timeout); | |
3413 | else | |
3414 | watchdog_close(true); | |
3415 | } | |
3416 | ||
3417 | if (r >= 0) | |
3418 | m->watchdog[t] = timeout; | |
3419 | } | |
3420 | ||
43bba15a | 3421 | int manager_override_watchdog(Manager *m, WatchdogType t, usec_t timeout) { |
986935cf FB |
3422 | int r = 0; |
3423 | ||
3424 | assert(m); | |
3425 | ||
3426 | if (MANAGER_IS_USER(m)) | |
3427 | return 0; | |
3428 | ||
3429 | if (m->watchdog_overridden[t] == timeout) | |
3430 | return 0; | |
3431 | ||
3432 | if (t == WATCHDOG_RUNTIME) { | |
3433 | usec_t *p; | |
3434 | ||
3435 | p = timestamp_is_set(timeout) ? &timeout : &m->watchdog[t]; | |
3436 | if (timestamp_is_set(*p)) | |
3437 | r = watchdog_set_timeout(p); | |
3438 | else | |
3439 | watchdog_close(true); | |
3440 | } | |
3441 | ||
3442 | if (r >= 0) | |
3443 | m->watchdog_overridden[t] = timeout; | |
3444 | ||
3445 | return 0; | |
3446 | } | |
3447 | ||
b406c6d1 FB |
3448 | static void manager_deserialize_uid_refs_one_internal( |
3449 | Manager *m, | |
3450 | Hashmap** uid_refs, | |
3451 | const char *value) { | |
3452 | ||
3453 | uid_t uid; | |
3454 | uint32_t c; | |
3455 | int r; | |
3456 | ||
3457 | assert(m); | |
3458 | assert(uid_refs); | |
3459 | assert(value); | |
3460 | ||
3461 | r = parse_uid(value, &uid); | |
3462 | if (r < 0 || uid == 0) { | |
3463 | log_debug("Unable to parse UID reference serialization: " UID_FMT, uid); | |
3464 | return; | |
3465 | } | |
3466 | ||
3467 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3468 | if (r < 0) { | |
3469 | log_oom(); | |
3470 | return; | |
3471 | } | |
3472 | ||
3473 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3474 | if (c & DESTROY_IPC_FLAG) | |
3475 | return; | |
3476 | ||
3477 | c |= DESTROY_IPC_FLAG; | |
3478 | ||
3479 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3480 | if (r < 0) { | |
3481 | log_debug_errno(r, "Failed to add UID reference entry: %m"); | |
3482 | return; | |
3483 | } | |
3484 | } | |
3485 | ||
3486 | static void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3487 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3488 | } | |
3489 | ||
3490 | static void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3491 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3492 | } | |
3493 | ||
a16e1123 LP |
3494 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { |
3495 | int r = 0; | |
3496 | ||
3497 | assert(m); | |
3498 | assert(f); | |
3499 | ||
3500 | log_debug("Deserializing state..."); | |
3501 | ||
eb10d0bf LP |
3502 | /* If we are not in reload mode yet, enter it now. Not that this is recursive, a caller might already have |
3503 | * increased it to non-zero, which is why we just increase it by one here and down again at the end of this | |
3504 | * call. */ | |
cb16b085 | 3505 | _cleanup_(manager_reloading_stopp) _unused_ Manager *reloading = manager_reloading_start(m); |
82c64bf5 | 3506 | |
10f8e83c | 3507 | for (;;) { |
8948b341 | 3508 | _cleanup_free_ char *line = NULL; |
d233c99a | 3509 | const char *val, *l; |
10f8e83c | 3510 | |
8948b341 LP |
3511 | r = read_line(f, LONG_LINE_MAX, &line); |
3512 | if (r < 0) | |
3513 | return log_error_errno(r, "Failed to read serialization line: %m"); | |
3514 | if (r == 0) | |
3515 | break; | |
10f8e83c | 3516 | |
10f8e83c | 3517 | l = strstrip(line); |
8948b341 | 3518 | if (isempty(l)) /* end marker */ |
10f8e83c LP |
3519 | break; |
3520 | ||
fb4650aa | 3521 | if ((val = startswith(l, "current-job-id="))) { |
01d67b43 LP |
3522 | uint32_t id; |
3523 | ||
fb4650aa | 3524 | if (safe_atou32(val, &id) < 0) |
b2a8a3dd | 3525 | log_notice("Failed to parse current job id value '%s', ignoring.", val); |
01d67b43 LP |
3526 | else |
3527 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 3528 | |
fb4650aa | 3529 | } else if ((val = startswith(l, "n-installed-jobs="))) { |
33c5fae9 LP |
3530 | uint32_t n; |
3531 | ||
fb4650aa | 3532 | if (safe_atou32(val, &n) < 0) |
b2a8a3dd | 3533 | log_notice("Failed to parse installed jobs counter '%s', ignoring.", val); |
33c5fae9 LP |
3534 | else |
3535 | m->n_installed_jobs += n; | |
718db961 | 3536 | |
fb4650aa | 3537 | } else if ((val = startswith(l, "n-failed-jobs="))) { |
33c5fae9 LP |
3538 | uint32_t n; |
3539 | ||
fb4650aa | 3540 | if (safe_atou32(val, &n) < 0) |
b2a8a3dd | 3541 | log_notice("Failed to parse failed jobs counter '%s', ignoring.", val); |
33c5fae9 LP |
3542 | else |
3543 | m->n_failed_jobs += n; | |
718db961 | 3544 | |
fb4650aa | 3545 | } else if ((val = startswith(l, "taint-usr="))) { |
01d67b43 LP |
3546 | int b; |
3547 | ||
fb4650aa | 3548 | b = parse_boolean(val); |
e3dd987c | 3549 | if (b < 0) |
b2a8a3dd | 3550 | log_notice("Failed to parse taint /usr flag '%s', ignoring.", val); |
01d67b43 LP |
3551 | else |
3552 | m->taint_usr = m->taint_usr || b; | |
718db961 | 3553 | |
0c2826c6 ZJS |
3554 | } else if ((val = startswith(l, "ready-sent="))) { |
3555 | int b; | |
3556 | ||
3557 | b = parse_boolean(val); | |
3558 | if (b < 0) | |
b2a8a3dd | 3559 | log_notice("Failed to parse ready-sent flag '%s', ignoring.", val); |
0c2826c6 ZJS |
3560 | else |
3561 | m->ready_sent = m->ready_sent || b; | |
3562 | ||
d8eb10d6 ZJS |
3563 | } else if ((val = startswith(l, "taint-logged="))) { |
3564 | int b; | |
3565 | ||
3566 | b = parse_boolean(val); | |
3567 | if (b < 0) | |
b2a8a3dd | 3568 | log_notice("Failed to parse taint-logged flag '%s', ignoring.", val); |
d8eb10d6 ZJS |
3569 | else |
3570 | m->taint_logged = m->taint_logged || b; | |
3571 | ||
2a12e32e JK |
3572 | } else if ((val = startswith(l, "service-watchdogs="))) { |
3573 | int b; | |
3574 | ||
3575 | b = parse_boolean(val); | |
3576 | if (b < 0) | |
b2a8a3dd | 3577 | log_notice("Failed to parse service-watchdogs flag '%s', ignoring.", val); |
2a12e32e JK |
3578 | else |
3579 | m->service_watchdogs = b; | |
3580 | ||
c6e892bc YW |
3581 | } else if ((val = startswith(l, "honor-device-enumeration="))) { |
3582 | int b; | |
3583 | ||
3584 | b = parse_boolean(val); | |
3585 | if (b < 0) | |
3586 | log_notice("Failed to parse honor-device-enumeration flag '%s', ignoring.", val); | |
3587 | else | |
3588 | m->honor_device_enumeration = b; | |
3589 | ||
44a41954 | 3590 | } else if ((val = startswith(l, "show-status-overridden="))) { |
bee38b5c YW |
3591 | ShowStatus s; |
3592 | ||
3593 | s = show_status_from_string(val); | |
3594 | if (s < 0) | |
44a41954 | 3595 | log_notice("Failed to parse show-status-overridden flag '%s', ignoring.", val); |
bee38b5c | 3596 | else |
43bba15a | 3597 | manager_override_show_status(m, s, "deserialize"); |
bee38b5c | 3598 | |
a6ecbf83 FB |
3599 | } else if ((val = startswith(l, "log-level-override="))) { |
3600 | int level; | |
3601 | ||
3602 | level = log_level_from_string(val); | |
3603 | if (level < 0) | |
3604 | log_notice("Failed to parse log-level-override value '%s', ignoring.", val); | |
3605 | else | |
3606 | manager_override_log_level(m, level); | |
3607 | ||
bda7d78b FB |
3608 | } else if ((val = startswith(l, "log-target-override="))) { |
3609 | LogTarget target; | |
3610 | ||
3611 | target = log_target_from_string(val); | |
3612 | if (target < 0) | |
3613 | log_notice("Failed to parse log-target-override value '%s', ignoring.", val); | |
3614 | else | |
3615 | manager_override_log_target(m, target); | |
3616 | ||
986935cf FB |
3617 | } else if ((val = startswith(l, "runtime-watchdog-overridden="))) { |
3618 | usec_t t; | |
3619 | ||
3620 | if (deserialize_usec(val, &t) < 0) | |
3621 | log_notice("Failed to parse runtime-watchdog-overridden value '%s', ignoring.", val); | |
3622 | else | |
43bba15a | 3623 | manager_override_watchdog(m, WATCHDOG_RUNTIME, t); |
986935cf FB |
3624 | |
3625 | } else if ((val = startswith(l, "reboot-watchdog-overridden="))) { | |
3626 | usec_t t; | |
3627 | ||
3628 | if (deserialize_usec(val, &t) < 0) | |
3629 | log_notice("Failed to parse reboot-watchdog-overridden value '%s', ignoring.", val); | |
3630 | else | |
43bba15a | 3631 | manager_override_watchdog(m, WATCHDOG_REBOOT, t); |
986935cf FB |
3632 | |
3633 | } else if ((val = startswith(l, "kexec-watchdog-overridden="))) { | |
3634 | usec_t t; | |
3635 | ||
3636 | if (deserialize_usec(val, &t) < 0) | |
3637 | log_notice("Failed to parse kexec-watchdog-overridden value '%s', ignoring.", val); | |
3638 | else | |
43bba15a | 3639 | manager_override_watchdog(m, WATCHDOG_KEXEC, t); |
986935cf | 3640 | |
9f9f0342 | 3641 | } else if (startswith(l, "env=")) { |
1ad6e8b3 | 3642 | r = deserialize_environment(l + 4, &m->client_environment); |
527b7a42 | 3643 | if (r < 0) |
b2a8a3dd | 3644 | log_notice_errno(r, "Failed to parse environment entry: \"%s\", ignoring: %m", l); |
e3dd987c | 3645 | |
fb4650aa | 3646 | } else if ((val = startswith(l, "notify-fd="))) { |
d86f9d52 LP |
3647 | int fd; |
3648 | ||
fb4650aa | 3649 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
b2a8a3dd | 3650 | log_notice("Failed to parse notify fd, ignoring: \"%s\"", val); |
d86f9d52 | 3651 | else { |
03e334a1 LP |
3652 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
3653 | safe_close(m->notify_fd); | |
d86f9d52 LP |
3654 | m->notify_fd = fdset_remove(fds, fd); |
3655 | } | |
3656 | ||
fb4650aa | 3657 | } else if ((val = startswith(l, "notify-socket="))) { |
05067c3c ZJS |
3658 | r = free_and_strdup(&m->notify_socket, val); |
3659 | if (r < 0) | |
3660 | return r; | |
d86f9d52 | 3661 | |
fb4650aa | 3662 | } else if ((val = startswith(l, "cgroups-agent-fd="))) { |
d8fdc620 LP |
3663 | int fd; |
3664 | ||
fb4650aa | 3665 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
b2a8a3dd | 3666 | log_notice("Failed to parse cgroups agent fd, ignoring.: %s", val); |
d8fdc620 LP |
3667 | else { |
3668 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
3669 | safe_close(m->cgroups_agent_fd); | |
3670 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
3671 | } | |
3672 | ||
fb4650aa | 3673 | } else if ((val = startswith(l, "user-lookup="))) { |
00d9ef85 LP |
3674 | int fd0, fd1; |
3675 | ||
fb4650aa | 3676 | if (sscanf(val, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) |
b2a8a3dd | 3677 | log_notice("Failed to parse user lookup fd, ignoring: %s", val); |
00d9ef85 LP |
3678 | else { |
3679 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
3680 | safe_close_pair(m->user_lookup_fds); | |
3681 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
3682 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
3683 | } | |
3684 | ||
fb4650aa ZJS |
3685 | } else if ((val = startswith(l, "dynamic-user="))) |
3686 | dynamic_user_deserialize_one(m, val, fds); | |
3687 | else if ((val = startswith(l, "destroy-ipc-uid="))) | |
3688 | manager_deserialize_uid_refs_one(m, val); | |
3689 | else if ((val = startswith(l, "destroy-ipc-gid="))) | |
3690 | manager_deserialize_gid_refs_one(m, val); | |
e8a565cb | 3691 | else if ((val = startswith(l, "exec-runtime="))) |
56a13a49 | 3692 | (void) exec_runtime_deserialize_one(m, val, fds); |
fb4650aa | 3693 | else if ((val = startswith(l, "subscribed="))) { |
05a98afd | 3694 | |
05067c3c ZJS |
3695 | if (strv_extend(&m->deserialized_subscribed, val) < 0) |
3696 | return -ENOMEM; | |
18869883 | 3697 | |
9f9f0342 LP |
3698 | } else { |
3699 | ManagerTimestamp q; | |
3700 | ||
3701 | for (q = 0; q < _MANAGER_TIMESTAMP_MAX; q++) { | |
3702 | val = startswith(l, manager_timestamp_to_string(q)); | |
3703 | if (!val) | |
3704 | continue; | |
05a98afd | 3705 | |
9f9f0342 LP |
3706 | val = startswith(val, "-timestamp="); |
3707 | if (val) | |
3708 | break; | |
3709 | } | |
05a98afd | 3710 | |
9f9f0342 | 3711 | if (q < _MANAGER_TIMESTAMP_MAX) /* found it */ |
d68c645b | 3712 | (void) deserialize_dual_timestamp(val, m->timestamps + q); |
9f9f0342 | 3713 | else if (!startswith(l, "kdbus-fd=")) /* ignore kdbus */ |
b2a8a3dd | 3714 | log_notice("Unknown serialization item '%s', ignoring.", l); |
9f9f0342 | 3715 | } |
10f8e83c LP |
3716 | } |
3717 | ||
651b3b6c | 3718 | return manager_deserialize_units(m, f, fds); |
a16e1123 LP |
3719 | } |
3720 | ||
3721 | int manager_reload(Manager *m) { | |
d147e2b6 | 3722 | _cleanup_(manager_reloading_stopp) Manager *reloading = NULL; |
51d122af | 3723 | _cleanup_fdset_free_ FDSet *fds = NULL; |
6a33af40 LP |
3724 | _cleanup_fclose_ FILE *f = NULL; |
3725 | int r; | |
a16e1123 LP |
3726 | |
3727 | assert(m); | |
3728 | ||
07719a21 LP |
3729 | r = manager_open_serialization(m, &f); |
3730 | if (r < 0) | |
6a33af40 | 3731 | return log_error_errno(r, "Failed to create serialization file: %m"); |
38c52d46 | 3732 | |
07719a21 | 3733 | fds = fdset_new(); |
6a33af40 LP |
3734 | if (!fds) |
3735 | return log_oom(); | |
3736 | ||
d147e2b6 ZJS |
3737 | /* We are officially in reload mode from here on. */ |
3738 | reloading = manager_reloading_start(m); | |
a16e1123 | 3739 | |
b3680f49 | 3740 | r = manager_serialize(m, f, fds, false); |
d147e2b6 | 3741 | if (r < 0) |
d68c645b | 3742 | return r; |
a16e1123 | 3743 | |
d147e2b6 ZJS |
3744 | if (fseeko(f, 0, SEEK_SET) < 0) |
3745 | return log_error_errno(errno, "Failed to seek to beginning of serialization: %m"); | |
a16e1123 | 3746 | |
6a33af40 | 3747 | /* 💀 This is the point of no return, from here on there is no way back. 💀 */ |
d147e2b6 | 3748 | reloading = NULL; |
6a33af40 LP |
3749 | |
3750 | bus_manager_send_reloading(m, true); | |
3751 | ||
3752 | /* Start by flushing out all jobs and units, all generated units, all runtime environments, all dynamic users | |
3753 | * and everything else that is worth flushing out. We'll get it all back from the serialization — if we need | |
3754 | * it.*/ | |
3755 | ||
a16e1123 | 3756 | manager_clear_jobs_and_units(m); |
07a78643 | 3757 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 3758 | lookup_paths_free(&m->lookup_paths); |
e8a565cb | 3759 | exec_runtime_vacuum(m); |
29206d46 | 3760 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
3761 | m->uid_refs = hashmap_free(m->uid_refs); |
3762 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 3763 | |
7c3733d5 | 3764 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
6a33af40 LP |
3765 | if (r < 0) |
3766 | log_warning_errno(r, "Failed to initialize path lookup table, ignoring: %m"); | |
5a1e9937 | 3767 | |
6a33af40 LP |
3768 | (void) manager_run_environment_generators(m); |
3769 | (void) manager_run_generators(m); | |
64691d20 | 3770 | |
581fef8d | 3771 | lookup_paths_log(&m->lookup_paths); |
07719a21 | 3772 | |
91e0ee5f | 3773 | /* We flushed out generated files, for which we don't watch mtime, so we should flush the old map. */ |
e8630e69 | 3774 | manager_free_unit_name_maps(m); |
5a1e9937 | 3775 | |
6a33af40 | 3776 | /* First, enumerate what we can from kernel and suchlike */ |
3ad2afb6 | 3777 | manager_enumerate_perpetual(m); |
ba64af90 | 3778 | manager_enumerate(m); |
a16e1123 LP |
3779 | |
3780 | /* Second, deserialize our stored data */ | |
6a33af40 LP |
3781 | r = manager_deserialize(m, f, fds); |
3782 | if (r < 0) | |
3783 | log_warning_errno(r, "Deserialization failed, proceeding anyway: %m"); | |
a16e1123 | 3784 | |
6a33af40 | 3785 | /* We don't need the serialization anymore */ |
62b0cbb3 | 3786 | f = safe_fclose(f); |
a16e1123 | 3787 | |
6a33af40 LP |
3788 | /* Re-register notify_fd as event source, and set up other sockets/communication channels we might need */ |
3789 | (void) manager_setup_notify(m); | |
3790 | (void) manager_setup_cgroups_agent(m); | |
3791 | (void) manager_setup_user_lookup_fd(m); | |
00d9ef85 | 3792 | |
a16e1123 | 3793 | /* Third, fire things up! */ |
007c6337 | 3794 | manager_coldplug(m); |
a16e1123 | 3795 | |
5197be06 LP |
3796 | /* Clean up runtime objects no longer referenced */ |
3797 | manager_vacuum(m); | |
e8a565cb | 3798 | |
6a33af40 | 3799 | /* Consider the reload process complete now. */ |
31dc1ca3 LP |
3800 | assert(m->n_reloading > 0); |
3801 | m->n_reloading--; | |
3802 | ||
c6e892bc YW |
3803 | /* On manager reloading, device tag data should exists, thus, we should honor the results of device |
3804 | * enumeration. The flag should be always set correctly by the serialized data, but it may fail. So, | |
3805 | * let's always set the flag here for safety. */ | |
3806 | m->honor_device_enumeration = true; | |
3807 | ||
5ce5e1ad | 3808 | manager_ready(m); |
8936a5e3 | 3809 | |
71445ae7 | 3810 | m->send_reloading_done = true; |
6a33af40 | 3811 | return 0; |
a16e1123 LP |
3812 | } |
3813 | ||
fdf20a31 | 3814 | void manager_reset_failed(Manager *m) { |
5632e374 | 3815 | Unit *u; |
5632e374 LP |
3816 | |
3817 | assert(m); | |
3818 | ||
90e74a66 | 3819 | HASHMAP_FOREACH(u, m->units) |
fdf20a31 | 3820 | unit_reset_failed(u); |
5632e374 LP |
3821 | } |
3822 | ||
31afa0a4 | 3823 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
3824 | Unit *u; |
3825 | ||
3826 | assert(m); | |
3827 | assert(name); | |
3828 | ||
3829 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
3830 | u = manager_get_unit(m, name); |
3831 | if (!u) | |
8f6df3fa LP |
3832 | return true; |
3833 | ||
31afa0a4 | 3834 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3835 | } |
3836 | ||
d8eb10d6 ZJS |
3837 | static void log_taint_string(Manager *m) { |
3838 | _cleanup_free_ char *taint = NULL; | |
3839 | ||
3840 | assert(m); | |
3841 | ||
3842 | if (MANAGER_IS_USER(m) || m->taint_logged) | |
3843 | return; | |
3844 | ||
3845 | m->taint_logged = true; /* only check for taint once */ | |
3846 | ||
3847 | taint = manager_taint_string(m); | |
3848 | if (isempty(taint)) | |
3849 | return; | |
3850 | ||
3851 | log_struct(LOG_NOTICE, | |
3852 | LOG_MESSAGE("System is tainted: %s", taint), | |
3853 | "TAINT=%s", taint, | |
a1230ff9 | 3854 | "MESSAGE_ID=" SD_MESSAGE_TAINTED_STR); |
d8eb10d6 ZJS |
3855 | } |
3856 | ||
56dacdbc | 3857 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 3858 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 3859 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3860 | |
638cece4 | 3861 | if (MANAGER_IS_TEST_RUN(m)) |
b0c918b9 LP |
3862 | return; |
3863 | ||
463d0d15 | 3864 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
dd1db3c2 | 3865 | char ts[FORMAT_TIMESPAN_MAX]; |
dc3c9f5e ZJS |
3866 | char buf[FORMAT_TIMESPAN_MAX + STRLEN(" (firmware) + ") + FORMAT_TIMESPAN_MAX + STRLEN(" (loader) + ")] |
3867 | = {}; | |
3868 | char *p = buf; | |
3869 | size_t size = sizeof buf; | |
e03ae661 | 3870 | |
9f9f0342 LP |
3871 | /* Note that MANAGER_TIMESTAMP_KERNEL's monotonic value is always at 0, and |
3872 | * MANAGER_TIMESTAMP_FIRMWARE's and MANAGER_TIMESTAMP_LOADER's monotonic value should be considered | |
915b3753 LP |
3873 | * negative values. */ |
3874 | ||
9f9f0342 LP |
3875 | firmware_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic - m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic; |
3876 | loader_usec = m->timestamps[MANAGER_TIMESTAMP_LOADER].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3877 | userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; | |
3878 | total_usec = m->timestamps[MANAGER_TIMESTAMP_FIRMWARE].monotonic + m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic; | |
18fa6b27 | 3879 | |
dd1db3c2 YW |
3880 | if (firmware_usec > 0) |
3881 | size = strpcpyf(&p, size, "%s (firmware) + ", format_timespan(ts, sizeof(ts), firmware_usec, USEC_PER_MSEC)); | |
3882 | if (loader_usec > 0) | |
3883 | size = strpcpyf(&p, size, "%s (loader) + ", format_timespan(ts, sizeof(ts), loader_usec, USEC_PER_MSEC)); | |
3884 | ||
9f9f0342 | 3885 | if (dual_timestamp_is_set(&m->timestamps[MANAGER_TIMESTAMP_INITRD])) { |
18fa6b27 | 3886 | |
9f9f0342 LP |
3887 | /* The initrd case on bare-metal*/ |
3888 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
3889 | initrd_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_INITRD].monotonic; | |
18fa6b27 | 3890 | |
e12919e8 | 3891 | log_struct(LOG_INFO, |
2b044526 | 3892 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3893 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3894 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3895 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
dd1db3c2 YW |
3896 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3897 | buf, | |
e2cc6eca LP |
3898 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), |
3899 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
3900 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
a1230ff9 | 3901 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3902 | } else { |
9f9f0342 LP |
3903 | /* The initrd-less case on bare-metal*/ |
3904 | ||
3905 | kernel_usec = m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic - m->timestamps[MANAGER_TIMESTAMP_KERNEL].monotonic; | |
18fa6b27 LP |
3906 | initrd_usec = 0; |
3907 | ||
81270860 | 3908 | log_struct(LOG_INFO, |
2b044526 | 3909 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3910 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3911 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
dd1db3c2 YW |
3912 | LOG_MESSAGE("Startup finished in %s%s (kernel) + %s (userspace) = %s.", |
3913 | buf, | |
e2cc6eca LP |
3914 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), |
3915 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
a1230ff9 | 3916 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC))); |
e12919e8 LP |
3917 | } |
3918 | } else { | |
4adf314b | 3919 | /* The container and --user case */ |
e12919e8 | 3920 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
9f9f0342 | 3921 | total_usec = userspace_usec = m->timestamps[MANAGER_TIMESTAMP_FINISH].monotonic - m->timestamps[MANAGER_TIMESTAMP_USERSPACE].monotonic; |
e12919e8 LP |
3922 | |
3923 | log_struct(LOG_INFO, | |
2b044526 | 3924 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3925 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca | 3926 | LOG_MESSAGE("Startup finished in %s.", |
a1230ff9 | 3927 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC))); |
18fa6b27 | 3928 | } |
b0c918b9 | 3929 | |
718db961 | 3930 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
3931 | |
3932 | sd_notifyf(false, | |
0c2826c6 ZJS |
3933 | m->ready_sent ? "STATUS=Startup finished in %s." |
3934 | : "READY=1\n" | |
3935 | "STATUS=Startup finished in %s.", | |
2fa4092c | 3936 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
0c2826c6 | 3937 | m->ready_sent = true; |
d8eb10d6 ZJS |
3938 | |
3939 | log_taint_string(m); | |
b0c918b9 LP |
3940 | } |
3941 | ||
4adf314b LP |
3942 | static void manager_send_ready(Manager *m) { |
3943 | assert(m); | |
3944 | ||
3945 | /* We send READY=1 on reaching basic.target only when running in --user mode. */ | |
3946 | if (!MANAGER_IS_USER(m) || m->ready_sent) | |
3947 | return; | |
3948 | ||
3949 | m->ready_sent = true; | |
3950 | ||
3951 | sd_notifyf(false, | |
3952 | "READY=1\n" | |
3953 | "STATUS=Reached " SPECIAL_BASIC_TARGET "."); | |
3954 | } | |
3955 | ||
3956 | static void manager_check_basic_target(Manager *m) { | |
3957 | Unit *u; | |
3958 | ||
3959 | assert(m); | |
3960 | ||
3961 | /* Small shortcut */ | |
3962 | if (m->ready_sent && m->taint_logged) | |
3963 | return; | |
3964 | ||
3965 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3966 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3967 | return; | |
3968 | ||
3969 | /* For user managers, send out READY=1 as soon as we reach basic.target */ | |
3970 | manager_send_ready(m); | |
3971 | ||
3972 | /* Log the taint string as soon as we reach basic.target */ | |
3973 | log_taint_string(m); | |
3974 | } | |
3975 | ||
56dacdbc | 3976 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3977 | assert(m); |
3978 | ||
2c289ea8 | 3979 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3980 | return; |
3981 | ||
4259d202 LP |
3982 | /* Verify that we have entered the event loop already, and not left it again. */ |
3983 | if (!MANAGER_IS_RUNNING(m)) | |
9771b62d LP |
3984 | return; |
3985 | ||
4adf314b | 3986 | manager_check_basic_target(m); |
0c2826c6 | 3987 | |
56dacdbc | 3988 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3989 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3990 | /* Ignore any failure, this is only for feedback */ |
1b4154a8 ZJS |
3991 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, |
3992 | manager_watch_jobs_next_time(m)); | |
56dacdbc ZJS |
3993 | return; |
3994 | } | |
3995 | ||
a4ac27c1 ZJS |
3996 | /* The jobs hashmap tends to grow a lot during boot, and then it's not reused until shutdown. Let's |
3997 | kill the hashmap if it is relatively large. */ | |
3998 | if (hashmap_buckets(m->jobs) > hashmap_size(m->units) / 10) | |
3999 | m->jobs = hashmap_free(m->jobs); | |
4000 | ||
7365a296 | 4001 | manager_flip_auto_status(m, false, "boot finished"); |
56dacdbc ZJS |
4002 | |
4003 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
4004 | manager_close_idle_pipe(m); |
4005 | ||
4006 | /* Turn off confirm spawn now */ | |
7d5ceb64 | 4007 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
4008 | |
4009 | /* No need to update ask password status when we're going non-interactive */ | |
4010 | manager_close_ask_password(m); | |
4011 | ||
4012 | /* This is no longer the first boot */ | |
4013 | manager_set_first_boot(m, false); | |
4014 | ||
49d5666c | 4015 | if (MANAGER_IS_FINISHED(m)) |
56dacdbc ZJS |
4016 | return; |
4017 | ||
9f9f0342 | 4018 | dual_timestamp_get(m->timestamps + MANAGER_TIMESTAMP_FINISH); |
56dacdbc ZJS |
4019 | |
4020 | manager_notify_finished(m); | |
4021 | ||
e7ab4d1a | 4022 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
4023 | } |
4024 | ||
64691d20 ZJS |
4025 | static bool generator_path_any(const char* const* paths) { |
4026 | char **path; | |
4027 | bool found = false; | |
4028 | ||
4029 | /* Optimize by skipping the whole process by not creating output directories | |
4030 | * if no generators are found. */ | |
4031 | STRV_FOREACH(path, (char**) paths) | |
4032 | if (access(*path, F_OK) == 0) | |
4033 | found = true; | |
4034 | else if (errno != ENOENT) | |
4035 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
4036 | ||
4037 | return found; | |
4038 | } | |
4039 | ||
64691d20 ZJS |
4040 | static int manager_run_environment_generators(Manager *m) { |
4041 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
cccf5703 | 4042 | _cleanup_strv_free_ char **paths = NULL; |
1ad6e8b3 LP |
4043 | void* args[] = { |
4044 | [STDOUT_GENERATE] = &tmp, | |
4045 | [STDOUT_COLLECT] = &tmp, | |
4046 | [STDOUT_CONSUME] = &m->transient_environment, | |
4047 | }; | |
e3b8d063 | 4048 | int r; |
64691d20 | 4049 | |
638cece4 | 4050 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
e0a3da1f ZJS |
4051 | return 0; |
4052 | ||
cccf5703 BB |
4053 | paths = env_generator_binary_paths(MANAGER_IS_SYSTEM(m)); |
4054 | if (!paths) | |
4055 | return log_oom(); | |
64691d20 | 4056 | |
cccf5703 | 4057 | if (!generator_path_any((const char* const*) paths)) |
64691d20 ZJS |
4058 | return 0; |
4059 | ||
e3b8d063 | 4060 | RUN_WITH_UMASK(0022) |
cccf5703 | 4061 | r = execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, gather_environment, |
4b05f0c9 | 4062 | args, NULL, m->transient_environment, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); |
e3b8d063 | 4063 | return r; |
64691d20 ZJS |
4064 | } |
4065 | ||
e801700e | 4066 | static int manager_run_generators(Manager *m) { |
f42348ac | 4067 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 4068 | const char *argv[5]; |
07719a21 | 4069 | int r; |
5a1e9937 LP |
4070 | |
4071 | assert(m); | |
4072 | ||
638cece4 | 4073 | if (MANAGER_IS_TEST_RUN(m) && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
e0a3da1f ZJS |
4074 | return 0; |
4075 | ||
9183df70 | 4076 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
4077 | if (!paths) |
4078 | return log_oom(); | |
5a1e9937 | 4079 | |
64691d20 ZJS |
4080 | if (!generator_path_any((const char* const*) paths)) |
4081 | return 0; | |
5a1e9937 | 4082 | |
cd64fd56 | 4083 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
7eb4f326 LP |
4084 | if (r < 0) { |
4085 | log_error_errno(r, "Failed to create generator directories: %m"); | |
07719a21 | 4086 | goto finish; |
7eb4f326 | 4087 | } |
5a1e9937 | 4088 | |
83cc030f | 4089 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
4090 | argv[1] = m->lookup_paths.generator; |
4091 | argv[2] = m->lookup_paths.generator_early; | |
4092 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 4093 | argv[4] = NULL; |
5a1e9937 | 4094 | |
718db961 | 4095 | RUN_WITH_UMASK(0022) |
4b05f0c9 MK |
4096 | (void) execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, NULL, NULL, |
4097 | (char**) argv, m->transient_environment, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); | |
7eb4f326 LP |
4098 | |
4099 | r = 0; | |
5a1e9937 | 4100 | |
718db961 | 4101 | finish: |
cd64fd56 | 4102 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 4103 | return r; |
5a1e9937 LP |
4104 | } |
4105 | ||
1ad6e8b3 LP |
4106 | int manager_transient_environment_add(Manager *m, char **plus) { |
4107 | char **a; | |
4108 | ||
4109 | assert(m); | |
4110 | ||
4111 | if (strv_isempty(plus)) | |
4112 | return 0; | |
4113 | ||
4114 | a = strv_env_merge(2, m->transient_environment, plus); | |
4115 | if (!a) | |
2fbbbf9a | 4116 | return log_oom(); |
1ad6e8b3 LP |
4117 | |
4118 | sanitize_environment(a); | |
4119 | ||
4120 | return strv_free_and_replace(m->transient_environment, a); | |
4121 | } | |
4122 | ||
4123 | int manager_client_environment_modify( | |
4124 | Manager *m, | |
4125 | char **minus, | |
4126 | char **plus) { | |
4127 | ||
718db961 | 4128 | char **a = NULL, **b = NULL, **l; |
1ad6e8b3 | 4129 | |
97d0e5f8 | 4130 | assert(m); |
bcd8e6d1 | 4131 | |
1ad6e8b3 LP |
4132 | if (strv_isempty(minus) && strv_isempty(plus)) |
4133 | return 0; | |
4134 | ||
4135 | l = m->client_environment; | |
bcd8e6d1 | 4136 | |
718db961 LP |
4137 | if (!strv_isempty(minus)) { |
4138 | a = strv_env_delete(l, 1, minus); | |
4139 | if (!a) | |
4140 | return -ENOMEM; | |
4141 | ||
4142 | l = a; | |
4143 | } | |
4144 | ||
4145 | if (!strv_isempty(plus)) { | |
4146 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
4147 | if (!b) { |
4148 | strv_free(a); | |
718db961 | 4149 | return -ENOMEM; |
aa9f8a30 | 4150 | } |
bcd8e6d1 | 4151 | |
718db961 LP |
4152 | l = b; |
4153 | } | |
4154 | ||
1ad6e8b3 LP |
4155 | if (m->client_environment != l) |
4156 | strv_free(m->client_environment); | |
4157 | ||
718db961 LP |
4158 | if (a != l) |
4159 | strv_free(a); | |
4160 | if (b != l) | |
4161 | strv_free(b); | |
4162 | ||
1ad6e8b3 LP |
4163 | m->client_environment = sanitize_environment(l); |
4164 | return 0; | |
4165 | } | |
4166 | ||
4167 | int manager_get_effective_environment(Manager *m, char ***ret) { | |
4168 | char **l; | |
4169 | ||
4170 | assert(m); | |
4171 | assert(ret); | |
4172 | ||
4173 | l = strv_env_merge(2, m->transient_environment, m->client_environment); | |
4174 | if (!l) | |
4175 | return -ENOMEM; | |
f069efb4 | 4176 | |
1ad6e8b3 | 4177 | *ret = l; |
97d0e5f8 UTL |
4178 | return 0; |
4179 | } | |
4180 | ||
c93ff2e9 FC |
4181 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
4182 | int i; | |
4183 | ||
4184 | assert(m); | |
4185 | ||
517d56b1 | 4186 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
4187 | m->rlimit[i] = mfree(m->rlimit[i]); |
4188 | ||
07719a21 LP |
4189 | if (!default_rlimit[i]) |
4190 | continue; | |
c93ff2e9 | 4191 | |
07719a21 LP |
4192 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
4193 | if (!m->rlimit[i]) | |
3ce40911 | 4194 | return log_oom(); |
c93ff2e9 FC |
4195 | } |
4196 | ||
4197 | return 0; | |
4198 | } | |
4199 | ||
8559b3b7 LP |
4200 | void manager_recheck_dbus(Manager *m) { |
4201 | assert(m); | |
4202 | ||
4203 | /* Connects to the bus if the dbus service and socket are running. If we are running in user mode this is all | |
4204 | * it does. In system mode we'll also connect to the system bus (which will most likely just reuse the | |
4205 | * connection of the API bus). That's because the system bus after all runs as service of the system instance, | |
4206 | * while in the user instance we can assume it's already there. */ | |
4207 | ||
31dc1ca3 LP |
4208 | if (MANAGER_IS_RELOADING(m)) |
4209 | return; /* don't check while we are reloading… */ | |
4210 | ||
8559b3b7 LP |
4211 | if (manager_dbus_is_running(m, false)) { |
4212 | (void) bus_init_api(m); | |
4213 | ||
4214 | if (MANAGER_IS_SYSTEM(m)) | |
4215 | (void) bus_init_system(m); | |
4216 | } else { | |
4217 | (void) bus_done_api(m); | |
4218 | ||
4219 | if (MANAGER_IS_SYSTEM(m)) | |
4220 | (void) bus_done_system(m); | |
4221 | } | |
4222 | } | |
4223 | ||
d075092f | 4224 | static bool manager_journal_is_running(Manager *m) { |
f1dd0c3f LP |
4225 | Unit *u; |
4226 | ||
4227 | assert(m); | |
4228 | ||
638cece4 | 4229 | if (MANAGER_IS_TEST_RUN(m)) |
7d814a19 LP |
4230 | return false; |
4231 | ||
d075092f | 4232 | /* If we are the user manager we can safely assume that the journal is up */ |
463d0d15 | 4233 | if (!MANAGER_IS_SYSTEM(m)) |
d075092f | 4234 | return true; |
f1dd0c3f | 4235 | |
d075092f | 4236 | /* Check that the socket is not only up, but in RUNNING state */ |
731a676c | 4237 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
d075092f LP |
4238 | if (!u) |
4239 | return false; | |
4240 | if (SOCKET(u)->state != SOCKET_RUNNING) | |
4241 | return false; | |
f1dd0c3f | 4242 | |
d075092f | 4243 | /* Similar, check if the daemon itself is fully up, too */ |
731a676c | 4244 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
d075092f LP |
4245 | if (!u) |
4246 | return false; | |
217677ab | 4247 | if (!IN_SET(SERVICE(u)->state, SERVICE_RELOAD, SERVICE_RUNNING)) |
d075092f LP |
4248 | return false; |
4249 | ||
4250 | return true; | |
4251 | } | |
4252 | ||
6123dfaa ZJS |
4253 | void disable_printk_ratelimit(void) { |
4254 | /* Disable kernel's printk ratelimit. | |
4255 | * | |
4256 | * Logging to /dev/kmsg is most useful during early boot and shutdown, where normal logging | |
4257 | * mechanisms are not available. The semantics of this sysctl are such that any kernel command-line | |
4258 | * setting takes precedence. */ | |
4259 | int r; | |
4260 | ||
4261 | r = sysctl_write("kernel/printk_devkmsg", "on"); | |
4262 | if (r < 0) | |
4263 | log_debug_errno(r, "Failed to set sysctl kernel.printk_devkmsg=on: %m"); | |
4264 | } | |
4265 | ||
d075092f LP |
4266 | void manager_recheck_journal(Manager *m) { |
4267 | ||
4268 | assert(m); | |
4269 | ||
4270 | /* Don't bother with this unless we are in the special situation of being PID 1 */ | |
4271 | if (getpid_cached() != 1) | |
731a676c | 4272 | return; |
f1dd0c3f | 4273 | |
31dc1ca3 LP |
4274 | /* Don't check this while we are reloading, things might still change */ |
4275 | if (MANAGER_IS_RELOADING(m)) | |
4276 | return; | |
4277 | ||
cedf5088 LP |
4278 | /* The journal is fully and entirely up? If so, let's permit logging to it, if that's configured. If the |
4279 | * journal is down, don't ever log to it, otherwise we might end up deadlocking ourselves as we might trigger | |
4280 | * an activation ourselves we can't fulfill. */ | |
4281 | log_set_prohibit_ipc(!manager_journal_is_running(m)); | |
cc2b9e6b | 4282 | log_open(); |
f1dd0c3f LP |
4283 | } |
4284 | ||
44a41954 FB |
4285 | static ShowStatus manager_get_show_status(Manager *m) { |
4286 | assert(m); | |
4287 | ||
4288 | if (MANAGER_IS_USER(m)) | |
4289 | return _SHOW_STATUS_INVALID; | |
4290 | ||
4291 | if (m->show_status_overridden != _SHOW_STATUS_INVALID) | |
4292 | return m->show_status_overridden; | |
4293 | ||
4294 | return m->show_status; | |
4295 | } | |
4296 | ||
4297 | bool manager_get_show_status_on(Manager *m) { | |
4298 | assert(m); | |
4299 | ||
4300 | return show_status_on(manager_get_show_status(m)); | |
4301 | } | |
b309078a | 4302 | |
3ceb3471 FB |
4303 | static void set_show_status_marker(bool b) { |
4304 | if (b) | |
4305 | (void) touch("/run/systemd/show-status"); | |
4306 | else | |
4307 | (void) unlink("/run/systemd/show-status"); | |
4308 | } | |
4309 | ||
44a41954 | 4310 | void manager_set_show_status(Manager *m, ShowStatus mode, const char *reason) { |
27d340c7 | 4311 | assert(m); |
44a41954 | 4312 | assert(reason); |
0d066dd1 | 4313 | assert(mode >= 0 && mode < _SHOW_STATUS_MAX); |
27d340c7 | 4314 | |
44a41954 | 4315 | if (MANAGER_IS_USER(m)) |
27d340c7 LP |
4316 | return; |
4317 | ||
ef15d3e1 ZJS |
4318 | if (mode == m->show_status) |
4319 | return; | |
4320 | ||
44a41954 FB |
4321 | if (m->show_status_overridden == _SHOW_STATUS_INVALID) { |
4322 | bool enabled; | |
4323 | ||
4324 | enabled = show_status_on(mode); | |
4325 | log_debug("%s (%s) showing of status (%s).", | |
4326 | enabled ? "Enabling" : "Disabling", | |
4327 | strna(show_status_to_string(mode)), | |
4328 | reason); | |
4329 | ||
3ceb3471 | 4330 | set_show_status_marker(enabled); |
44a41954 FB |
4331 | } |
4332 | ||
4333 | m->show_status = mode; | |
4334 | } | |
4335 | ||
43bba15a | 4336 | void manager_override_show_status(Manager *m, ShowStatus mode, const char *reason) { |
44a41954 FB |
4337 | assert(m); |
4338 | assert(mode < _SHOW_STATUS_MAX); | |
4339 | ||
4340 | if (MANAGER_IS_USER(m)) | |
4341 | return; | |
4342 | ||
4343 | if (mode == m->show_status_overridden) | |
4344 | return; | |
4345 | ||
4346 | m->show_status_overridden = mode; | |
4347 | ||
4348 | if (mode == _SHOW_STATUS_INVALID) | |
4349 | mode = m->show_status; | |
4350 | ||
ef15d3e1 | 4351 | log_debug("%s (%s) showing of status (%s).", |
44a41954 | 4352 | m->show_status_overridden != _SHOW_STATUS_INVALID ? "Overriding" : "Restoring", |
ef15d3e1 ZJS |
4353 | strna(show_status_to_string(mode)), |
4354 | reason); | |
b309078a | 4355 | |
3ceb3471 | 4356 | set_show_status_marker(show_status_on(mode)); |
27d340c7 LP |
4357 | } |
4358 | ||
7d5ceb64 FB |
4359 | const char *manager_get_confirm_spawn(Manager *m) { |
4360 | static int last_errno = 0; | |
7d5ceb64 FB |
4361 | struct stat st; |
4362 | int r; | |
4363 | ||
ea758432 LP |
4364 | assert(m); |
4365 | ||
7d5ceb64 FB |
4366 | /* Here's the deal: we want to test the validity of the console but don't want |
4367 | * PID1 to go through the whole console process which might block. But we also | |
4368 | * want to warn the user only once if something is wrong with the console so we | |
4369 | * cannot do the sanity checks after spawning our children. So here we simply do | |
4370 | * really basic tests to hopefully trap common errors. | |
4371 | * | |
4372 | * If the console suddenly disappear at the time our children will really it | |
4373 | * then they will simply fail to acquire it and a positive answer will be | |
2aed63f4 | 4374 | * assumed. New children will fall back to /dev/console though. |
7d5ceb64 FB |
4375 | * |
4376 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
4377 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
2aed63f4 | 4378 | * reason the configured console is not ready, we fall back to the default |
7d5ceb64 FB |
4379 | * console. */ |
4380 | ||
ea758432 LP |
4381 | if (!m->confirm_spawn || path_equal(m->confirm_spawn, "/dev/console")) |
4382 | return m->confirm_spawn; | |
7d5ceb64 | 4383 | |
ea758432 LP |
4384 | if (stat(m->confirm_spawn, &st) < 0) { |
4385 | r = -errno; | |
7d5ceb64 | 4386 | goto fail; |
ea758432 | 4387 | } |
7d5ceb64 FB |
4388 | |
4389 | if (!S_ISCHR(st.st_mode)) { | |
ea758432 | 4390 | r = -ENOTTY; |
7d5ceb64 FB |
4391 | goto fail; |
4392 | } | |
4393 | ||
4394 | last_errno = 0; | |
ea758432 LP |
4395 | return m->confirm_spawn; |
4396 | ||
7d5ceb64 | 4397 | fail: |
ea758432 LP |
4398 | if (last_errno != r) |
4399 | last_errno = log_warning_errno(r, "Failed to open %s, using default console: %m", m->confirm_spawn); | |
4400 | ||
7d5ceb64 FB |
4401 | return "/dev/console"; |
4402 | } | |
4403 | ||
e2680723 LP |
4404 | void manager_set_first_boot(Manager *m, bool b) { |
4405 | assert(m); | |
4406 | ||
463d0d15 | 4407 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
4408 | return; |
4409 | ||
ae2a2c53 LP |
4410 | if (m->first_boot != (int) b) { |
4411 | if (b) | |
4412 | (void) touch("/run/systemd/first-boot"); | |
4413 | else | |
4414 | (void) unlink("/run/systemd/first-boot"); | |
4415 | } | |
e2680723 | 4416 | |
ae2a2c53 | 4417 | m->first_boot = b; |
e2680723 LP |
4418 | } |
4419 | ||
b0eb2944 FB |
4420 | void manager_disable_confirm_spawn(void) { |
4421 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
4422 | } | |
4423 | ||
4424 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
4425 | if (!m->confirm_spawn) | |
4426 | return true; | |
4427 | ||
4428 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
4429 | } | |
4430 | ||
0d6d3cf0 FB |
4431 | static bool manager_should_show_status(Manager *m, StatusType type) { |
4432 | assert(m); | |
4433 | ||
4434 | if (!MANAGER_IS_SYSTEM(m)) | |
4435 | return false; | |
4436 | ||
4437 | if (m->no_console_output) | |
4438 | return false; | |
4439 | ||
4440 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) | |
4441 | return false; | |
4442 | ||
4443 | /* If we cannot find out the status properly, just proceed. */ | |
4444 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) | |
4445 | return false; | |
4446 | ||
4447 | if (type == STATUS_TYPE_NOTICE && m->show_status != SHOW_STATUS_NO) | |
4448 | return true; | |
4449 | ||
44a41954 | 4450 | return manager_get_show_status_on(m); |
0d6d3cf0 FB |
4451 | } |
4452 | ||
127d5fd1 | 4453 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
4454 | va_list ap; |
4455 | ||
cb6531be ZJS |
4456 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
4457 | ||
0d6d3cf0 | 4458 | if (m && !manager_should_show_status(m, type)) |
25cee550 MS |
4459 | return; |
4460 | ||
03b717a3 MS |
4461 | /* XXX We should totally drop the check for ephemeral here |
4462 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 4463 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
4464 | return; |
4465 | ||
25cee550 | 4466 | va_start(ap, format); |
a885727a | 4467 | status_vprintf(status, SHOW_STATUS_ELLIPSIZE|(type == STATUS_TYPE_EPHEMERAL ? SHOW_STATUS_EPHEMERAL : 0), format, ap); |
25cee550 MS |
4468 | va_end(ap); |
4469 | } | |
4470 | ||
a57f7e2c LP |
4471 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
4472 | char p[strlen(path)+1]; | |
4473 | ||
4474 | assert(m); | |
4475 | assert(path); | |
4476 | ||
4477 | strcpy(p, path); | |
858d36c1 | 4478 | path_simplify(p, false); |
a57f7e2c LP |
4479 | |
4480 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
4481 | } | |
e66cf1a3 | 4482 | |
5269eb6b | 4483 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 4484 | unsigned size; |
5269eb6b | 4485 | int r; |
03455c28 LDM |
4486 | |
4487 | assert(m); | |
4488 | assert(u->manager == m); | |
4489 | ||
4490 | size = set_size(m->failed_units); | |
4491 | ||
9fff8981 | 4492 | if (failed) { |
de7fef4b | 4493 | r = set_ensure_put(&m->failed_units, NULL, u); |
5269eb6b LP |
4494 | if (r < 0) |
4495 | return log_oom(); | |
9fff8981 | 4496 | } else |
5269eb6b | 4497 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
4498 | |
4499 | if (set_size(m->failed_units) != size) | |
4500 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
4501 | |
4502 | return 0; | |
03455c28 LDM |
4503 | } |
4504 | ||
f755e3b7 LP |
4505 | ManagerState manager_state(Manager *m) { |
4506 | Unit *u; | |
4507 | ||
4508 | assert(m); | |
4509 | ||
f9d29f6d JB |
4510 | /* Is the special shutdown target active or queued? If so, we are in shutdown state */ |
4511 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
4512 | if (u && unit_active_or_pending(u)) | |
4513 | return MANAGER_STOPPING; | |
4514 | ||
f755e3b7 | 4515 | /* Did we ever finish booting? If not then we are still starting up */ |
49d5666c | 4516 | if (!MANAGER_IS_FINISHED(m)) { |
d81afec1 LP |
4517 | |
4518 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
4519 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
4520 | return MANAGER_INITIALIZING; | |
4521 | ||
f755e3b7 | 4522 | return MANAGER_STARTING; |
d81afec1 | 4523 | } |
f755e3b7 | 4524 | |
45a7b16b LP |
4525 | if (MANAGER_IS_SYSTEM(m)) { |
4526 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
4527 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
4528 | if (u && unit_active_or_pending(u)) | |
4529 | return MANAGER_MAINTENANCE; | |
f755e3b7 | 4530 | |
45a7b16b LP |
4531 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); |
4532 | if (u && unit_active_or_pending(u)) | |
4533 | return MANAGER_MAINTENANCE; | |
4534 | } | |
f755e3b7 LP |
4535 | |
4536 | /* Are there any failed units? If so, we are in degraded mode */ | |
4537 | if (set_size(m->failed_units) > 0) | |
4538 | return MANAGER_DEGRADED; | |
4539 | ||
4540 | return MANAGER_RUNNING; | |
4541 | } | |
4542 | ||
00d9ef85 LP |
4543 | static void manager_unref_uid_internal( |
4544 | Manager *m, | |
4545 | Hashmap **uid_refs, | |
4546 | uid_t uid, | |
4547 | bool destroy_now, | |
4548 | int (*_clean_ipc)(uid_t uid)) { | |
4549 | ||
4550 | uint32_t c, n; | |
4551 | ||
4552 | assert(m); | |
4553 | assert(uid_refs); | |
4554 | assert(uid_is_valid(uid)); | |
4555 | assert(_clean_ipc); | |
4556 | ||
4557 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
4558 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
4559 | * | |
4560 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
4561 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
4562 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
4563 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
4564 | ||
4565 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4566 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4567 | ||
4568 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4569 | return; | |
4570 | ||
4571 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4572 | ||
4573 | n = c & ~DESTROY_IPC_FLAG; | |
4574 | assert(n > 0); | |
4575 | n--; | |
4576 | ||
4577 | if (destroy_now && n == 0) { | |
4578 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
4579 | ||
4580 | if (c & DESTROY_IPC_FLAG) { | |
4581 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
4582 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4583 | uid); | |
4584 | (void) _clean_ipc(uid); | |
4585 | } | |
4586 | } else { | |
4587 | c = n | (c & DESTROY_IPC_FLAG); | |
4588 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
4589 | } | |
4590 | } | |
4591 | ||
4592 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
4593 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
4594 | } | |
4595 | ||
4596 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
4597 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
4598 | } | |
4599 | ||
4600 | static int manager_ref_uid_internal( | |
4601 | Manager *m, | |
4602 | Hashmap **uid_refs, | |
4603 | uid_t uid, | |
4604 | bool clean_ipc) { | |
4605 | ||
4606 | uint32_t c, n; | |
4607 | int r; | |
4608 | ||
4609 | assert(m); | |
4610 | assert(uid_refs); | |
4611 | assert(uid_is_valid(uid)); | |
4612 | ||
4613 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
4614 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
4615 | ||
4616 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
4617 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
4618 | ||
4619 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
4620 | return 0; | |
4621 | ||
4622 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
4623 | if (r < 0) | |
4624 | return r; | |
4625 | ||
4626 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
4627 | ||
4628 | n = c & ~DESTROY_IPC_FLAG; | |
4629 | n++; | |
4630 | ||
4631 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
4632 | return -EOVERFLOW; | |
4633 | ||
4634 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
4635 | ||
4636 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
4637 | } | |
4638 | ||
4639 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
4640 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
4641 | } | |
4642 | ||
4643 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
4644 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
4645 | } | |
4646 | ||
4647 | static void manager_vacuum_uid_refs_internal( | |
4648 | Manager *m, | |
4649 | Hashmap **uid_refs, | |
4650 | int (*_clean_ipc)(uid_t uid)) { | |
4651 | ||
00d9ef85 LP |
4652 | void *p, *k; |
4653 | ||
4654 | assert(m); | |
4655 | assert(uid_refs); | |
4656 | assert(_clean_ipc); | |
4657 | ||
90e74a66 | 4658 | HASHMAP_FOREACH_KEY(p, k, *uid_refs) { |
00d9ef85 LP |
4659 | uint32_t c, n; |
4660 | uid_t uid; | |
4661 | ||
4662 | uid = PTR_TO_UID(k); | |
4663 | c = PTR_TO_UINT32(p); | |
4664 | ||
4665 | n = c & ~DESTROY_IPC_FLAG; | |
4666 | if (n > 0) | |
4667 | continue; | |
4668 | ||
4669 | if (c & DESTROY_IPC_FLAG) { | |
4670 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
4671 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
4672 | uid); | |
4673 | (void) _clean_ipc(uid); | |
4674 | } | |
4675 | ||
4676 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
4677 | } | |
4678 | } | |
4679 | ||
06a4eb07 | 4680 | static void manager_vacuum_uid_refs(Manager *m) { |
00d9ef85 LP |
4681 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); |
4682 | } | |
4683 | ||
06a4eb07 | 4684 | static void manager_vacuum_gid_refs(Manager *m) { |
00d9ef85 LP |
4685 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); |
4686 | } | |
4687 | ||
06a4eb07 FB |
4688 | static void manager_vacuum(Manager *m) { |
4689 | assert(m); | |
4690 | ||
4691 | /* Release any dynamic users no longer referenced */ | |
4692 | dynamic_user_vacuum(m, true); | |
4693 | ||
4694 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ | |
4695 | manager_vacuum_uid_refs(m); | |
4696 | manager_vacuum_gid_refs(m); | |
4697 | ||
4698 | /* Release any runtimes no longer referenced */ | |
4699 | exec_runtime_vacuum(m); | |
4700 | } | |
4701 | ||
00d9ef85 LP |
4702 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
4703 | struct buffer { | |
4704 | uid_t uid; | |
4705 | gid_t gid; | |
4706 | char unit_name[UNIT_NAME_MAX+1]; | |
4707 | } _packed_ buffer; | |
4708 | ||
4709 | Manager *m = userdata; | |
4710 | ssize_t l; | |
4711 | size_t n; | |
4712 | Unit *u; | |
4713 | ||
4714 | assert_se(source); | |
4715 | assert_se(m); | |
4716 | ||
4717 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
4718 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
4719 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
4720 | ||
4721 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
4722 | if (l < 0) { | |
4c701096 | 4723 | if (IN_SET(errno, EINTR, EAGAIN)) |
00d9ef85 LP |
4724 | return 0; |
4725 | ||
4726 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
4727 | } | |
4728 | ||
4729 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
4730 | log_warning("Received too short user lookup message, ignoring."); | |
4731 | return 0; | |
4732 | } | |
4733 | ||
4734 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
4735 | log_warning("Received too long user lookup message, ignoring."); | |
4736 | return 0; | |
4737 | } | |
4738 | ||
4739 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
4740 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
4741 | return 0; | |
4742 | } | |
4743 | ||
4744 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
4745 | if (memchr(buffer.unit_name, 0, n)) { | |
4746 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
4747 | return 0; | |
4748 | } | |
4749 | ||
4750 | buffer.unit_name[n] = 0; | |
4751 | u = manager_get_unit(m, buffer.unit_name); | |
4752 | if (!u) { | |
4753 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
4754 | return 0; | |
4755 | } | |
4756 | ||
4757 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
4758 | ||
4759 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
4760 | return 0; | |
4761 | } | |
4762 | ||
af6b0ecc | 4763 | char *manager_taint_string(Manager *m) { |
90d7464d | 4764 | _cleanup_free_ char *destination = NULL, *overflowuid = NULL, *overflowgid = NULL; |
af6b0ecc LP |
4765 | char *buf, *e; |
4766 | int r; | |
4767 | ||
198ce932 ZJS |
4768 | /* Returns a "taint string", e.g. "local-hwclock:var-run-bad". |
4769 | * Only things that are detected at runtime should be tagged | |
4770 | * here. For stuff that is set during compilation, emit a warning | |
4771 | * in the configuration phase. */ | |
4772 | ||
af6b0ecc LP |
4773 | assert(m); |
4774 | ||
4775 | buf = new(char, sizeof("split-usr:" | |
4776 | "cgroups-missing:" | |
4777 | "local-hwclock:" | |
4778 | "var-run-bad:" | |
90d7464d LP |
4779 | "overflowuid-not-65534:" |
4780 | "overflowgid-not-65534:")); | |
af6b0ecc LP |
4781 | if (!buf) |
4782 | return NULL; | |
4783 | ||
4784 | e = buf; | |
0fd402b0 | 4785 | buf[0] = 0; |
af6b0ecc LP |
4786 | |
4787 | if (m->taint_usr) | |
4788 | e = stpcpy(e, "split-usr:"); | |
4789 | ||
4790 | if (access("/proc/cgroups", F_OK) < 0) | |
4791 | e = stpcpy(e, "cgroups-missing:"); | |
4792 | ||
4793 | if (clock_is_localtime(NULL) > 0) | |
4794 | e = stpcpy(e, "local-hwclock:"); | |
4795 | ||
4796 | r = readlink_malloc("/var/run", &destination); | |
4797 | if (r < 0 || !PATH_IN_SET(destination, "../run", "/run")) | |
4798 | e = stpcpy(e, "var-run-bad:"); | |
4799 | ||
90d7464d LP |
4800 | r = read_one_line_file("/proc/sys/kernel/overflowuid", &overflowuid); |
4801 | if (r >= 0 && !streq(overflowuid, "65534")) | |
4802 | e = stpcpy(e, "overflowuid-not-65534:"); | |
4803 | ||
4804 | r = read_one_line_file("/proc/sys/kernel/overflowgid", &overflowgid); | |
4805 | if (r >= 0 && !streq(overflowgid, "65534")) | |
4806 | e = stpcpy(e, "overflowgid-not-65534:"); | |
4807 | ||
af6b0ecc LP |
4808 | /* remove the last ':' */ |
4809 | if (e != buf) | |
4810 | e[-1] = 0; | |
4811 | ||
4812 | return buf; | |
4813 | } | |
4814 | ||
adefcf28 LP |
4815 | void manager_ref_console(Manager *m) { |
4816 | assert(m); | |
4817 | ||
4818 | m->n_on_console++; | |
4819 | } | |
4820 | ||
4821 | void manager_unref_console(Manager *m) { | |
4822 | ||
4823 | assert(m->n_on_console > 0); | |
4824 | m->n_on_console--; | |
4825 | ||
4826 | if (m->n_on_console == 0) | |
4827 | m->no_console_output = false; /* unset no_console_output flag, since the console is definitely free now */ | |
4828 | } | |
4829 | ||
a6ecbf83 FB |
4830 | void manager_override_log_level(Manager *m, int level) { |
4831 | _cleanup_free_ char *s = NULL; | |
4832 | assert(m); | |
4833 | ||
4834 | if (!m->log_level_overridden) { | |
4835 | m->original_log_level = log_get_max_level(); | |
4836 | m->log_level_overridden = true; | |
4837 | } | |
4838 | ||
4839 | (void) log_level_to_string_alloc(level, &s); | |
4840 | log_info("Setting log level to %s.", strna(s)); | |
4841 | ||
4842 | log_set_max_level(level); | |
4843 | } | |
4844 | ||
4845 | void manager_restore_original_log_level(Manager *m) { | |
4846 | _cleanup_free_ char *s = NULL; | |
4847 | assert(m); | |
4848 | ||
4849 | if (!m->log_level_overridden) | |
4850 | return; | |
4851 | ||
4852 | (void) log_level_to_string_alloc(m->original_log_level, &s); | |
4853 | log_info("Restoring log level to original (%s).", strna(s)); | |
4854 | ||
4855 | log_set_max_level(m->original_log_level); | |
4856 | m->log_level_overridden = false; | |
4857 | } | |
4858 | ||
bda7d78b FB |
4859 | void manager_override_log_target(Manager *m, LogTarget target) { |
4860 | assert(m); | |
4861 | ||
4862 | if (!m->log_target_overridden) { | |
4863 | m->original_log_target = log_get_target(); | |
4864 | m->log_target_overridden = true; | |
4865 | } | |
4866 | ||
4867 | log_info("Setting log target to %s.", log_target_to_string(target)); | |
4868 | log_set_target(target); | |
4869 | } | |
4870 | ||
4871 | void manager_restore_original_log_target(Manager *m) { | |
4872 | assert(m); | |
4873 | ||
4874 | if (!m->log_target_overridden) | |
4875 | return; | |
4876 | ||
4877 | log_info("Restoring log target to original %s.", log_target_to_string(m->original_log_target)); | |
4878 | ||
4879 | log_set_target(m->original_log_target); | |
4880 | m->log_target_overridden = false; | |
4881 | } | |
4882 | ||
d4ee7bd8 YW |
4883 | ManagerTimestamp manager_timestamp_initrd_mangle(ManagerTimestamp s) { |
4884 | if (in_initrd() && | |
4885 | s >= MANAGER_TIMESTAMP_SECURITY_START && | |
4886 | s <= MANAGER_TIMESTAMP_UNITS_LOAD_FINISH) | |
4887 | return s - MANAGER_TIMESTAMP_SECURITY_START + MANAGER_TIMESTAMP_INITRD_SECURITY_START; | |
4888 | return s; | |
4889 | } | |
4890 | ||
f755e3b7 | 4891 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 4892 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
4893 | [MANAGER_STARTING] = "starting", |
4894 | [MANAGER_RUNNING] = "running", | |
4895 | [MANAGER_DEGRADED] = "degraded", | |
4896 | [MANAGER_MAINTENANCE] = "maintenance", | |
4897 | [MANAGER_STOPPING] = "stopping", | |
4898 | }; | |
4899 | ||
4900 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); | |
9f9f0342 LP |
4901 | |
4902 | static const char *const manager_timestamp_table[_MANAGER_TIMESTAMP_MAX] = { | |
4903 | [MANAGER_TIMESTAMP_FIRMWARE] = "firmware", | |
4904 | [MANAGER_TIMESTAMP_LOADER] = "loader", | |
4905 | [MANAGER_TIMESTAMP_KERNEL] = "kernel", | |
4906 | [MANAGER_TIMESTAMP_INITRD] = "initrd", | |
4907 | [MANAGER_TIMESTAMP_USERSPACE] = "userspace", | |
4908 | [MANAGER_TIMESTAMP_FINISH] = "finish", | |
4909 | [MANAGER_TIMESTAMP_SECURITY_START] = "security-start", | |
4910 | [MANAGER_TIMESTAMP_SECURITY_FINISH] = "security-finish", | |
4911 | [MANAGER_TIMESTAMP_GENERATORS_START] = "generators-start", | |
4912 | [MANAGER_TIMESTAMP_GENERATORS_FINISH] = "generators-finish", | |
4913 | [MANAGER_TIMESTAMP_UNITS_LOAD_START] = "units-load-start", | |
4914 | [MANAGER_TIMESTAMP_UNITS_LOAD_FINISH] = "units-load-finish", | |
d4ee7bd8 YW |
4915 | [MANAGER_TIMESTAMP_INITRD_SECURITY_START] = "initrd-security-start", |
4916 | [MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH] = "initrd-security-finish", | |
4917 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_START] = "initrd-generators-start", | |
4918 | [MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH] = "initrd-generators-finish", | |
4919 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START] = "initrd-units-load-start", | |
4920 | [MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH] = "initrd-units-load-finish", | |
9f9f0342 LP |
4921 | }; |
4922 | ||
4923 | DEFINE_STRING_TABLE_LOOKUP(manager_timestamp, ManagerTimestamp); | |
afcfaa69 LP |
4924 | |
4925 | static const char* const oom_policy_table[_OOM_POLICY_MAX] = { | |
4926 | [OOM_CONTINUE] = "continue", | |
4927 | [OOM_STOP] = "stop", | |
4928 | [OOM_KILL] = "kill", | |
4929 | }; | |
4930 | ||
4931 | DEFINE_STRING_TABLE_LOOKUP(oom_policy, OOMPolicy); |