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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <dirent.h> | |
23 | #include <errno.h> | |
24 | #include <fcntl.h> | |
25 | #include <linux/kd.h> | |
26 | #include <signal.h> | |
27 | #include <string.h> | |
28 | #include <sys/epoll.h> | |
29 | #include <sys/inotify.h> | |
30 | #include <sys/ioctl.h> | |
31 | #include <sys/reboot.h> | |
32 | #include <sys/timerfd.h> | |
33 | #include <sys/wait.h> | |
34 | #include <unistd.h> | |
35 | ||
36 | #ifdef HAVE_AUDIT | |
37 | #include <libaudit.h> | |
38 | #endif | |
39 | ||
40 | #include "sd-daemon.h" | |
41 | #include "sd-messages.h" | |
42 | ||
43 | #include "alloc-util.h" | |
44 | #include "audit-fd.h" | |
45 | #include "boot-timestamps.h" | |
46 | #include "bus-common-errors.h" | |
47 | #include "bus-error.h" | |
48 | #include "bus-kernel.h" | |
49 | #include "bus-util.h" | |
50 | #include "dbus-job.h" | |
51 | #include "dbus-manager.h" | |
52 | #include "dbus-unit.h" | |
53 | #include "dbus.h" | |
54 | #include "env-util.h" | |
55 | #include "escape.h" | |
56 | #include "exit-status.h" | |
57 | #include "fd-util.h" | |
58 | #include "fileio.h" | |
59 | #include "fs-util.h" | |
60 | #include "hashmap.h" | |
61 | #include "io-util.h" | |
62 | #include "locale-setup.h" | |
63 | #include "log.h" | |
64 | #include "macro.h" | |
65 | #include "manager.h" | |
66 | #include "missing.h" | |
67 | #include "mkdir.h" | |
68 | #include "parse-util.h" | |
69 | #include "path-lookup.h" | |
70 | #include "path-util.h" | |
71 | #include "process-util.h" | |
72 | #include "ratelimit.h" | |
73 | #include "rm-rf.h" | |
74 | #include "signal-util.h" | |
75 | #include "special.h" | |
76 | #include "stat-util.h" | |
77 | #include "string-table.h" | |
78 | #include "string-util.h" | |
79 | #include "strv.h" | |
80 | #include "terminal-util.h" | |
81 | #include "time-util.h" | |
82 | #include "transaction.h" | |
83 | #include "umask-util.h" | |
84 | #include "unit-name.h" | |
85 | #include "util.h" | |
86 | #include "virt.h" | |
87 | #include "watchdog.h" | |
88 | ||
89 | /* Initial delay and the interval for printing status messages about running jobs */ | |
90 | #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) | |
91 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) | |
92 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 | |
93 | ||
94 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
95 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
96 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
97 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
98 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); | |
99 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); | |
100 | static int manager_run_generators(Manager *m); | |
101 | static void manager_undo_generators(Manager *m); | |
102 | ||
103 | static void manager_watch_jobs_in_progress(Manager *m) { | |
104 | usec_t next; | |
105 | int r; | |
106 | ||
107 | assert(m); | |
108 | ||
109 | if (m->jobs_in_progress_event_source) | |
110 | return; | |
111 | ||
112 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; | |
113 | r = sd_event_add_time( | |
114 | m->event, | |
115 | &m->jobs_in_progress_event_source, | |
116 | CLOCK_MONOTONIC, | |
117 | next, 0, | |
118 | manager_dispatch_jobs_in_progress, m); | |
119 | if (r < 0) | |
120 | return; | |
121 | ||
122 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
123 | } | |
124 | ||
125 | #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1)) | |
126 | ||
127 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { | |
128 | char *p = buffer; | |
129 | ||
130 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
131 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
132 | ||
133 | if (pos > 1) { | |
134 | if (pos > 2) | |
135 | p = mempset(p, ' ', pos-2); | |
136 | p = stpcpy(p, ANSI_RED); | |
137 | *p++ = '*'; | |
138 | } | |
139 | ||
140 | if (pos > 0 && pos <= width) { | |
141 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
142 | *p++ = '*'; | |
143 | } | |
144 | ||
145 | p = stpcpy(p, ANSI_NORMAL); | |
146 | ||
147 | if (pos < width) { | |
148 | p = stpcpy(p, ANSI_RED); | |
149 | *p++ = '*'; | |
150 | if (pos < width-1) | |
151 | p = mempset(p, ' ', width-1-pos); | |
152 | strcpy(p, ANSI_NORMAL); | |
153 | } | |
154 | } | |
155 | ||
156 | void manager_flip_auto_status(Manager *m, bool enable) { | |
157 | assert(m); | |
158 | ||
159 | if (enable) { | |
160 | if (m->show_status == SHOW_STATUS_AUTO) | |
161 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY); | |
162 | } else { | |
163 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
164 | manager_set_show_status(m, SHOW_STATUS_AUTO); | |
165 | } | |
166 | } | |
167 | ||
168 | static void manager_print_jobs_in_progress(Manager *m) { | |
169 | _cleanup_free_ char *job_of_n = NULL; | |
170 | Iterator i; | |
171 | Job *j; | |
172 | unsigned counter = 0, print_nr; | |
173 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
174 | unsigned cylon_pos; | |
175 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; | |
176 | uint64_t x; | |
177 | ||
178 | assert(m); | |
179 | assert(m->n_running_jobs > 0); | |
180 | ||
181 | manager_flip_auto_status(m, true); | |
182 | ||
183 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; | |
184 | ||
185 | HASHMAP_FOREACH(j, m->jobs, i) | |
186 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
187 | break; | |
188 | ||
189 | /* m->n_running_jobs must be consistent with the contents of m->jobs, | |
190 | * so the above loop must have succeeded in finding j. */ | |
191 | assert(counter == print_nr + 1); | |
192 | assert(j); | |
193 | ||
194 | cylon_pos = m->jobs_in_progress_iteration % 14; | |
195 | if (cylon_pos >= 8) | |
196 | cylon_pos = 14 - cylon_pos; | |
197 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
198 | ||
199 | m->jobs_in_progress_iteration++; | |
200 | ||
201 | if (m->n_running_jobs > 1) { | |
202 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
203 | job_of_n = NULL; | |
204 | } | |
205 | ||
206 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); | |
207 | if (job_get_timeout(j, &x) > 0) | |
208 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
209 | ||
210 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, | |
211 | "%sA %s job is running for %s (%s / %s)", | |
212 | strempty(job_of_n), | |
213 | job_type_to_string(j->type), | |
214 | unit_description(j->unit), | |
215 | time, limit); | |
216 | } | |
217 | ||
218 | static int have_ask_password(void) { | |
219 | _cleanup_closedir_ DIR *dir; | |
220 | ||
221 | dir = opendir("/run/systemd/ask-password"); | |
222 | if (!dir) { | |
223 | if (errno == ENOENT) | |
224 | return false; | |
225 | else | |
226 | return -errno; | |
227 | } | |
228 | ||
229 | for (;;) { | |
230 | struct dirent *de; | |
231 | ||
232 | errno = 0; | |
233 | de = readdir(dir); | |
234 | if (!de && errno != 0) | |
235 | return -errno; | |
236 | if (!de) | |
237 | return false; | |
238 | ||
239 | if (startswith(de->d_name, "ask.")) | |
240 | return true; | |
241 | } | |
242 | } | |
243 | ||
244 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
245 | int fd, uint32_t revents, void *userdata) { | |
246 | Manager *m = userdata; | |
247 | ||
248 | assert(m); | |
249 | ||
250 | flush_fd(fd); | |
251 | ||
252 | m->have_ask_password = have_ask_password(); | |
253 | if (m->have_ask_password < 0) | |
254 | /* Log error but continue. Negative have_ask_password | |
255 | * is treated as unknown status. */ | |
256 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | static void manager_close_ask_password(Manager *m) { | |
262 | assert(m); | |
263 | ||
264 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); | |
265 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); | |
266 | m->have_ask_password = -EINVAL; | |
267 | } | |
268 | ||
269 | static int manager_check_ask_password(Manager *m) { | |
270 | int r; | |
271 | ||
272 | assert(m); | |
273 | ||
274 | if (!m->ask_password_event_source) { | |
275 | assert(m->ask_password_inotify_fd < 0); | |
276 | ||
277 | mkdir_p_label("/run/systemd/ask-password", 0755); | |
278 | ||
279 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
280 | if (m->ask_password_inotify_fd < 0) | |
281 | return log_error_errno(errno, "inotify_init1() failed: %m"); | |
282 | ||
283 | if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) { | |
284 | log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m"); | |
285 | manager_close_ask_password(m); | |
286 | return -errno; | |
287 | } | |
288 | ||
289 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
290 | m->ask_password_inotify_fd, EPOLLIN, | |
291 | manager_dispatch_ask_password_fd, m); | |
292 | if (r < 0) { | |
293 | log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m"); | |
294 | manager_close_ask_password(m); | |
295 | return -errno; | |
296 | } | |
297 | ||
298 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); | |
299 | ||
300 | /* Queries might have been added meanwhile... */ | |
301 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
302 | m->ask_password_inotify_fd, EPOLLIN, m); | |
303 | } | |
304 | ||
305 | return m->have_ask_password; | |
306 | } | |
307 | ||
308 | static int manager_watch_idle_pipe(Manager *m) { | |
309 | int r; | |
310 | ||
311 | assert(m); | |
312 | ||
313 | if (m->idle_pipe_event_source) | |
314 | return 0; | |
315 | ||
316 | if (m->idle_pipe[2] < 0) | |
317 | return 0; | |
318 | ||
319 | r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m); | |
320 | if (r < 0) | |
321 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
322 | ||
323 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | static void manager_close_idle_pipe(Manager *m) { | |
329 | assert(m); | |
330 | ||
331 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); | |
332 | ||
333 | safe_close_pair(m->idle_pipe); | |
334 | safe_close_pair(m->idle_pipe + 2); | |
335 | } | |
336 | ||
337 | static int manager_setup_time_change(Manager *m) { | |
338 | int r; | |
339 | ||
340 | /* We only care for the cancellation event, hence we set the | |
341 | * timeout to the latest possible value. */ | |
342 | struct itimerspec its = { | |
343 | .it_value.tv_sec = TIME_T_MAX, | |
344 | }; | |
345 | ||
346 | assert(m); | |
347 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
348 | ||
349 | if (m->test_run) | |
350 | return 0; | |
351 | ||
352 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever | |
353 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
354 | ||
355 | m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
356 | if (m->time_change_fd < 0) | |
357 | return log_error_errno(errno, "Failed to create timerfd: %m"); | |
358 | ||
359 | if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { | |
360 | log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); | |
361 | m->time_change_fd = safe_close(m->time_change_fd); | |
362 | return 0; | |
363 | } | |
364 | ||
365 | r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m); | |
366 | if (r < 0) | |
367 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
368 | ||
369 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); | |
370 | ||
371 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static int enable_special_signals(Manager *m) { | |
377 | _cleanup_close_ int fd = -1; | |
378 | ||
379 | assert(m); | |
380 | ||
381 | /* Enable that we get SIGINT on control-alt-del. In containers | |
382 | * this will fail with EPERM (older) or EINVAL (newer), so | |
383 | * ignore that. */ | |
384 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL) | |
385 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); | |
386 | ||
387 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); | |
388 | if (fd < 0) { | |
389 | /* Support systems without virtual console */ | |
390 | if (fd != -ENOENT) | |
391 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); | |
392 | } else { | |
393 | /* Enable that we get SIGWINCH on kbrequest */ | |
394 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
395 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); | |
396 | } | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
401 | static int manager_setup_signals(Manager *m) { | |
402 | struct sigaction sa = { | |
403 | .sa_handler = SIG_DFL, | |
404 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
405 | }; | |
406 | sigset_t mask; | |
407 | int r; | |
408 | ||
409 | assert(m); | |
410 | ||
411 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
412 | ||
413 | /* We make liberal use of realtime signals here. On | |
414 | * Linux/glibc we have 30 of them (with the exception of Linux | |
415 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
416 | * (aka SIGRTMAX). */ | |
417 | ||
418 | assert_se(sigemptyset(&mask) == 0); | |
419 | sigset_add_many(&mask, | |
420 | SIGCHLD, /* Child died */ | |
421 | SIGTERM, /* Reexecute daemon */ | |
422 | SIGHUP, /* Reload configuration */ | |
423 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
424 | SIGUSR2, /* systemd: dump status */ | |
425 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
426 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
427 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
428 | ||
429 | SIGRTMIN+0, /* systemd: start default.target */ | |
430 | SIGRTMIN+1, /* systemd: isolate rescue.target */ | |
431 | SIGRTMIN+2, /* systemd: isolate emergency.target */ | |
432 | SIGRTMIN+3, /* systemd: start halt.target */ | |
433 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
434 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
435 | SIGRTMIN+6, /* systemd: start kexec.target */ | |
436 | ||
437 | /* ... space for more special targets ... */ | |
438 | ||
439 | SIGRTMIN+13, /* systemd: Immediate halt */ | |
440 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
441 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
442 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
443 | ||
444 | /* ... space for more immediate system state changes ... */ | |
445 | ||
446 | SIGRTMIN+20, /* systemd: enable status messages */ | |
447 | SIGRTMIN+21, /* systemd: disable status messages */ | |
448 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ | |
449 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
450 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ | |
451 | ||
452 | /* .. one free signal here ... */ | |
453 | ||
454 | #if !defined(__hppa64__) && !defined(__hppa__) | |
455 | /* Apparently Linux on hppa has fewer RT | |
456 | * signals (SIGRTMAX is SIGRTMIN+25 there), | |
457 | * hence let's not try to make use of them | |
458 | * here. Since these commands are accessible | |
459 | * by different means and only really a safety | |
460 | * net, the missing functionality on hppa | |
461 | * shouldn't matter. */ | |
462 | ||
463 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ | |
464 | SIGRTMIN+27, /* systemd: set log target to console */ | |
465 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
466 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */ | |
467 | ||
468 | /* ... one free signal here SIGRTMIN+30 ... */ | |
469 | #endif | |
470 | -1); | |
471 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); | |
472 | ||
473 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); | |
474 | if (m->signal_fd < 0) | |
475 | return -errno; | |
476 | ||
477 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); | |
478 | if (r < 0) | |
479 | return r; | |
480 | ||
481 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); | |
482 | ||
483 | /* Process signals a bit earlier than the rest of things, but | |
484 | * later than notify_fd processing, so that the notify | |
485 | * processing can still figure out to which process/service a | |
486 | * message belongs, before we reap the process. */ | |
487 | r = sd_event_source_set_priority(m->signal_event_source, -5); | |
488 | if (r < 0) | |
489 | return r; | |
490 | ||
491 | if (m->running_as == MANAGER_SYSTEM) | |
492 | return enable_special_signals(m); | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | static void manager_clean_environment(Manager *m) { | |
498 | assert(m); | |
499 | ||
500 | /* Let's remove some environment variables that we | |
501 | * need ourselves to communicate with our clients */ | |
502 | strv_env_unset_many( | |
503 | m->environment, | |
504 | "NOTIFY_SOCKET", | |
505 | "MAINPID", | |
506 | "MANAGERPID", | |
507 | "LISTEN_PID", | |
508 | "LISTEN_FDS", | |
509 | "LISTEN_FDNAMES", | |
510 | "WATCHDOG_PID", | |
511 | "WATCHDOG_USEC", | |
512 | NULL); | |
513 | } | |
514 | ||
515 | static int manager_default_environment(Manager *m) { | |
516 | assert(m); | |
517 | ||
518 | if (m->running_as == MANAGER_SYSTEM) { | |
519 | /* The system manager always starts with a clean | |
520 | * environment for its children. It does not import | |
521 | * the kernel or the parents exported variables. | |
522 | * | |
523 | * The initial passed environ is untouched to keep | |
524 | * /proc/self/environ valid; it is used for tagging | |
525 | * the init process inside containers. */ | |
526 | m->environment = strv_new("PATH=" DEFAULT_PATH, | |
527 | NULL); | |
528 | ||
529 | /* Import locale variables LC_*= from configuration */ | |
530 | locale_setup(&m->environment); | |
531 | } else { | |
532 | /* The user manager passes its own environment | |
533 | * along to its children. */ | |
534 | m->environment = strv_copy(environ); | |
535 | } | |
536 | ||
537 | if (!m->environment) | |
538 | return -ENOMEM; | |
539 | ||
540 | manager_clean_environment(m); | |
541 | strv_sort(m->environment); | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
546 | ||
547 | int manager_new(ManagerRunningAs running_as, bool test_run, Manager **_m) { | |
548 | ||
549 | static const char * const unit_log_fields[_MANAGER_RUNNING_AS_MAX] = { | |
550 | [MANAGER_SYSTEM] = "UNIT=", | |
551 | [MANAGER_USER] = "USER_UNIT=", | |
552 | }; | |
553 | ||
554 | static const char * const unit_log_format_strings[_MANAGER_RUNNING_AS_MAX] = { | |
555 | [MANAGER_SYSTEM] = "UNIT=%s", | |
556 | [MANAGER_USER] = "USER_UNIT=%s", | |
557 | }; | |
558 | ||
559 | Manager *m; | |
560 | int r; | |
561 | ||
562 | assert(_m); | |
563 | assert(running_as >= 0); | |
564 | assert(running_as < _MANAGER_RUNNING_AS_MAX); | |
565 | ||
566 | m = new0(Manager, 1); | |
567 | if (!m) | |
568 | return -ENOMEM; | |
569 | ||
570 | #ifdef ENABLE_EFI | |
571 | if (running_as == MANAGER_SYSTEM && detect_container() <= 0) | |
572 | boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); | |
573 | #endif | |
574 | ||
575 | m->running_as = running_as; | |
576 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; | |
577 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; | |
578 | ||
579 | /* Prepare log fields we can use for structured logging */ | |
580 | m->unit_log_field = unit_log_fields[running_as]; | |
581 | m->unit_log_format_string = unit_log_format_strings[running_as]; | |
582 | ||
583 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; | |
584 | ||
585 | m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = | |
586 | m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = m->cgroup_inotify_fd = -1; | |
587 | ||
588 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ | |
589 | ||
590 | m->ask_password_inotify_fd = -1; | |
591 | m->have_ask_password = -EINVAL; /* we don't know */ | |
592 | m->first_boot = -1; | |
593 | ||
594 | m->cgroup_netclass_registry_last = CGROUP_NETCLASS_FIXED_MAX; | |
595 | ||
596 | m->test_run = test_run; | |
597 | ||
598 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ | |
599 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
600 | ||
601 | r = manager_default_environment(m); | |
602 | if (r < 0) | |
603 | goto fail; | |
604 | ||
605 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); | |
606 | if (r < 0) | |
607 | goto fail; | |
608 | ||
609 | r = hashmap_ensure_allocated(&m->jobs, NULL); | |
610 | if (r < 0) | |
611 | goto fail; | |
612 | ||
613 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); | |
614 | if (r < 0) | |
615 | goto fail; | |
616 | ||
617 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); | |
618 | if (r < 0) | |
619 | goto fail; | |
620 | ||
621 | r = sd_event_default(&m->event); | |
622 | if (r < 0) | |
623 | goto fail; | |
624 | ||
625 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); | |
626 | if (r < 0) | |
627 | goto fail; | |
628 | ||
629 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
630 | if (r < 0) | |
631 | goto fail; | |
632 | ||
633 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
634 | if (r < 0) | |
635 | goto fail; | |
636 | ||
637 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); | |
638 | ||
639 | r = manager_setup_signals(m); | |
640 | if (r < 0) | |
641 | goto fail; | |
642 | ||
643 | r = manager_setup_cgroup(m); | |
644 | if (r < 0) | |
645 | goto fail; | |
646 | ||
647 | r = manager_setup_time_change(m); | |
648 | if (r < 0) | |
649 | goto fail; | |
650 | ||
651 | m->udev = udev_new(); | |
652 | if (!m->udev) { | |
653 | r = -ENOMEM; | |
654 | goto fail; | |
655 | } | |
656 | ||
657 | /* Note that we set up neither kdbus, nor the notify fd | |
658 | * here. We do that after deserialization, since they might | |
659 | * have gotten serialized across the reexec. */ | |
660 | ||
661 | m->taint_usr = dir_is_empty("/usr") > 0; | |
662 | ||
663 | *_m = m; | |
664 | return 0; | |
665 | ||
666 | fail: | |
667 | manager_free(m); | |
668 | return r; | |
669 | } | |
670 | ||
671 | static int manager_setup_notify(Manager *m) { | |
672 | int r; | |
673 | ||
674 | if (m->test_run) | |
675 | return 0; | |
676 | ||
677 | if (m->notify_fd < 0) { | |
678 | _cleanup_close_ int fd = -1; | |
679 | union sockaddr_union sa = { | |
680 | .sa.sa_family = AF_UNIX, | |
681 | }; | |
682 | static const int one = 1; | |
683 | ||
684 | /* First free all secondary fields */ | |
685 | m->notify_socket = mfree(m->notify_socket); | |
686 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); | |
687 | ||
688 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
689 | if (fd < 0) | |
690 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
691 | ||
692 | if (m->running_as == MANAGER_SYSTEM) | |
693 | m->notify_socket = strdup("/run/systemd/notify"); | |
694 | else { | |
695 | const char *e; | |
696 | ||
697 | e = getenv("XDG_RUNTIME_DIR"); | |
698 | if (!e) { | |
699 | log_error_errno(errno, "XDG_RUNTIME_DIR is not set: %m"); | |
700 | return -EINVAL; | |
701 | } | |
702 | ||
703 | m->notify_socket = strappend(e, "/systemd/notify"); | |
704 | } | |
705 | if (!m->notify_socket) | |
706 | return log_oom(); | |
707 | ||
708 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
709 | (void) unlink(m->notify_socket); | |
710 | ||
711 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
712 | r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)); | |
713 | if (r < 0) | |
714 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
715 | ||
716 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
717 | if (r < 0) | |
718 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
719 | ||
720 | m->notify_fd = fd; | |
721 | fd = -1; | |
722 | ||
723 | log_debug("Using notification socket %s", m->notify_socket); | |
724 | } | |
725 | ||
726 | if (!m->notify_event_source) { | |
727 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); | |
728 | if (r < 0) | |
729 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
730 | ||
731 | /* Process signals a bit earlier than SIGCHLD, so that we can | |
732 | * still identify to which service an exit message belongs */ | |
733 | r = sd_event_source_set_priority(m->notify_event_source, -7); | |
734 | if (r < 0) | |
735 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
736 | ||
737 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
738 | } | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
743 | static int manager_setup_kdbus(Manager *m) { | |
744 | _cleanup_free_ char *p = NULL; | |
745 | ||
746 | assert(m); | |
747 | ||
748 | if (m->test_run || m->kdbus_fd >= 0) | |
749 | return 0; | |
750 | if (!is_kdbus_available()) | |
751 | return -ESOCKTNOSUPPORT; | |
752 | ||
753 | m->kdbus_fd = bus_kernel_create_bus( | |
754 | m->running_as == MANAGER_SYSTEM ? "system" : "user", | |
755 | m->running_as == MANAGER_SYSTEM, &p); | |
756 | ||
757 | if (m->kdbus_fd < 0) | |
758 | return log_debug_errno(m->kdbus_fd, "Failed to set up kdbus: %m"); | |
759 | ||
760 | log_debug("Successfully set up kdbus on %s", p); | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | static int manager_connect_bus(Manager *m, bool reexecuting) { | |
766 | bool try_bus_connect; | |
767 | ||
768 | assert(m); | |
769 | ||
770 | if (m->test_run) | |
771 | return 0; | |
772 | ||
773 | try_bus_connect = | |
774 | m->kdbus_fd >= 0 || | |
775 | reexecuting || | |
776 | (m->running_as == MANAGER_USER && getenv("DBUS_SESSION_BUS_ADDRESS")); | |
777 | ||
778 | /* Try to connect to the buses, if possible. */ | |
779 | return bus_init(m, try_bus_connect); | |
780 | } | |
781 | ||
782 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { | |
783 | Unit *u; | |
784 | unsigned n = 0; | |
785 | ||
786 | assert(m); | |
787 | ||
788 | while ((u = m->cleanup_queue)) { | |
789 | assert(u->in_cleanup_queue); | |
790 | ||
791 | unit_free(u); | |
792 | n++; | |
793 | } | |
794 | ||
795 | return n; | |
796 | } | |
797 | ||
798 | enum { | |
799 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ | |
800 | GC_OFFSET_UNSURE, /* No clue */ | |
801 | GC_OFFSET_GOOD, /* We still need this unit */ | |
802 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
803 | _GC_OFFSET_MAX | |
804 | }; | |
805 | ||
806 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { | |
807 | Iterator i; | |
808 | Unit *other; | |
809 | bool is_bad; | |
810 | ||
811 | assert(u); | |
812 | ||
813 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || | |
814 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
815 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) | |
816 | return; | |
817 | ||
818 | if (u->in_cleanup_queue) | |
819 | goto bad; | |
820 | ||
821 | if (unit_check_gc(u)) | |
822 | goto good; | |
823 | ||
824 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; | |
825 | ||
826 | is_bad = true; | |
827 | ||
828 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { | |
829 | unit_gc_sweep(other, gc_marker); | |
830 | ||
831 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) | |
832 | goto good; | |
833 | ||
834 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) | |
835 | is_bad = false; | |
836 | } | |
837 | ||
838 | if (is_bad) | |
839 | goto bad; | |
840 | ||
841 | /* We were unable to find anything out about this entry, so | |
842 | * let's investigate it later */ | |
843 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; | |
844 | unit_add_to_gc_queue(u); | |
845 | return; | |
846 | ||
847 | bad: | |
848 | /* We definitely know that this one is not useful anymore, so | |
849 | * let's mark it for deletion */ | |
850 | u->gc_marker = gc_marker + GC_OFFSET_BAD; | |
851 | unit_add_to_cleanup_queue(u); | |
852 | return; | |
853 | ||
854 | good: | |
855 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
856 | } | |
857 | ||
858 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
859 | Unit *u; | |
860 | unsigned n = 0; | |
861 | unsigned gc_marker; | |
862 | ||
863 | assert(m); | |
864 | ||
865 | /* log_debug("Running GC..."); */ | |
866 | ||
867 | m->gc_marker += _GC_OFFSET_MAX; | |
868 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
869 | m->gc_marker = 1; | |
870 | ||
871 | gc_marker = m->gc_marker; | |
872 | ||
873 | while ((u = m->gc_queue)) { | |
874 | assert(u->in_gc_queue); | |
875 | ||
876 | unit_gc_sweep(u, gc_marker); | |
877 | ||
878 | LIST_REMOVE(gc_queue, m->gc_queue, u); | |
879 | u->in_gc_queue = false; | |
880 | ||
881 | n++; | |
882 | ||
883 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
884 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
885 | if (u->id) | |
886 | log_unit_debug(u, "Collecting."); | |
887 | u->gc_marker = gc_marker + GC_OFFSET_BAD; | |
888 | unit_add_to_cleanup_queue(u); | |
889 | } | |
890 | } | |
891 | ||
892 | m->n_in_gc_queue = 0; | |
893 | ||
894 | return n; | |
895 | } | |
896 | ||
897 | static void manager_clear_jobs_and_units(Manager *m) { | |
898 | Unit *u; | |
899 | ||
900 | assert(m); | |
901 | ||
902 | while ((u = hashmap_first(m->units))) | |
903 | unit_free(u); | |
904 | ||
905 | manager_dispatch_cleanup_queue(m); | |
906 | ||
907 | assert(!m->load_queue); | |
908 | assert(!m->run_queue); | |
909 | assert(!m->dbus_unit_queue); | |
910 | assert(!m->dbus_job_queue); | |
911 | assert(!m->cleanup_queue); | |
912 | assert(!m->gc_queue); | |
913 | ||
914 | assert(hashmap_isempty(m->jobs)); | |
915 | assert(hashmap_isempty(m->units)); | |
916 | ||
917 | m->n_on_console = 0; | |
918 | m->n_running_jobs = 0; | |
919 | } | |
920 | ||
921 | Manager* manager_free(Manager *m) { | |
922 | UnitType c; | |
923 | int i; | |
924 | ||
925 | if (!m) | |
926 | return NULL; | |
927 | ||
928 | manager_clear_jobs_and_units(m); | |
929 | ||
930 | for (c = 0; c < _UNIT_TYPE_MAX; c++) | |
931 | if (unit_vtable[c]->shutdown) | |
932 | unit_vtable[c]->shutdown(m); | |
933 | ||
934 | /* If we reexecute ourselves, we keep the root cgroup | |
935 | * around */ | |
936 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); | |
937 | ||
938 | manager_undo_generators(m); | |
939 | ||
940 | bus_done(m); | |
941 | ||
942 | hashmap_free(m->units); | |
943 | hashmap_free(m->jobs); | |
944 | hashmap_free(m->watch_pids1); | |
945 | hashmap_free(m->watch_pids2); | |
946 | hashmap_free(m->watch_bus); | |
947 | ||
948 | set_free(m->startup_units); | |
949 | set_free(m->failed_units); | |
950 | ||
951 | sd_event_source_unref(m->signal_event_source); | |
952 | sd_event_source_unref(m->notify_event_source); | |
953 | sd_event_source_unref(m->time_change_event_source); | |
954 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
955 | sd_event_source_unref(m->run_queue_event_source); | |
956 | ||
957 | safe_close(m->signal_fd); | |
958 | safe_close(m->notify_fd); | |
959 | safe_close(m->time_change_fd); | |
960 | safe_close(m->kdbus_fd); | |
961 | ||
962 | manager_close_ask_password(m); | |
963 | ||
964 | manager_close_idle_pipe(m); | |
965 | ||
966 | udev_unref(m->udev); | |
967 | sd_event_unref(m->event); | |
968 | ||
969 | free(m->notify_socket); | |
970 | ||
971 | lookup_paths_free(&m->lookup_paths); | |
972 | strv_free(m->environment); | |
973 | ||
974 | hashmap_free(m->cgroup_unit); | |
975 | set_free_free(m->unit_path_cache); | |
976 | ||
977 | hashmap_free(m->cgroup_netclass_registry); | |
978 | ||
979 | free(m->switch_root); | |
980 | free(m->switch_root_init); | |
981 | ||
982 | for (i = 0; i < _RLIMIT_MAX; i++) | |
983 | free(m->rlimit[i]); | |
984 | ||
985 | assert(hashmap_isempty(m->units_requiring_mounts_for)); | |
986 | hashmap_free(m->units_requiring_mounts_for); | |
987 | ||
988 | free(m); | |
989 | return NULL; | |
990 | } | |
991 | ||
992 | int manager_enumerate(Manager *m) { | |
993 | int r = 0; | |
994 | UnitType c; | |
995 | ||
996 | assert(m); | |
997 | ||
998 | /* Let's ask every type to load all units from disk/kernel | |
999 | * that it might know */ | |
1000 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { | |
1001 | int q; | |
1002 | ||
1003 | if (!unit_type_supported(c)) { | |
1004 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); | |
1005 | continue; | |
1006 | } | |
1007 | ||
1008 | if (!unit_vtable[c]->enumerate) | |
1009 | continue; | |
1010 | ||
1011 | q = unit_vtable[c]->enumerate(m); | |
1012 | if (q < 0) | |
1013 | r = q; | |
1014 | } | |
1015 | ||
1016 | manager_dispatch_load_queue(m); | |
1017 | return r; | |
1018 | } | |
1019 | ||
1020 | static void manager_coldplug(Manager *m) { | |
1021 | Iterator i; | |
1022 | Unit *u; | |
1023 | char *k; | |
1024 | int r; | |
1025 | ||
1026 | assert(m); | |
1027 | ||
1028 | /* Then, let's set up their initial state. */ | |
1029 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1030 | ||
1031 | /* ignore aliases */ | |
1032 | if (u->id != k) | |
1033 | continue; | |
1034 | ||
1035 | r = unit_coldplug(u); | |
1036 | if (r < 0) | |
1037 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | static void manager_build_unit_path_cache(Manager *m) { | |
1042 | char **i; | |
1043 | _cleanup_closedir_ DIR *d = NULL; | |
1044 | int r; | |
1045 | ||
1046 | assert(m); | |
1047 | ||
1048 | set_free_free(m->unit_path_cache); | |
1049 | ||
1050 | m->unit_path_cache = set_new(&string_hash_ops); | |
1051 | if (!m->unit_path_cache) { | |
1052 | log_error("Failed to allocate unit path cache."); | |
1053 | return; | |
1054 | } | |
1055 | ||
1056 | /* This simply builds a list of files we know exist, so that | |
1057 | * we don't always have to go to disk */ | |
1058 | ||
1059 | STRV_FOREACH(i, m->lookup_paths.unit_path) { | |
1060 | struct dirent *de; | |
1061 | ||
1062 | d = opendir(*i); | |
1063 | if (!d) { | |
1064 | if (errno != ENOENT) | |
1065 | log_error_errno(errno, "Failed to open directory %s: %m", *i); | |
1066 | continue; | |
1067 | } | |
1068 | ||
1069 | while ((de = readdir(d))) { | |
1070 | char *p; | |
1071 | ||
1072 | if (hidden_file(de->d_name)) | |
1073 | continue; | |
1074 | ||
1075 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); | |
1076 | if (!p) { | |
1077 | r = -ENOMEM; | |
1078 | goto fail; | |
1079 | } | |
1080 | ||
1081 | r = set_consume(m->unit_path_cache, p); | |
1082 | if (r < 0) | |
1083 | goto fail; | |
1084 | } | |
1085 | ||
1086 | d = safe_closedir(d); | |
1087 | } | |
1088 | ||
1089 | return; | |
1090 | ||
1091 | fail: | |
1092 | log_error_errno(r, "Failed to build unit path cache: %m"); | |
1093 | ||
1094 | set_free_free(m->unit_path_cache); | |
1095 | m->unit_path_cache = NULL; | |
1096 | } | |
1097 | ||
1098 | ||
1099 | static int manager_distribute_fds(Manager *m, FDSet *fds) { | |
1100 | Unit *u; | |
1101 | Iterator i; | |
1102 | int r; | |
1103 | ||
1104 | assert(m); | |
1105 | ||
1106 | HASHMAP_FOREACH(u, m->units, i) { | |
1107 | ||
1108 | if (fdset_size(fds) <= 0) | |
1109 | break; | |
1110 | ||
1111 | if (UNIT_VTABLE(u)->distribute_fds) { | |
1112 | r = UNIT_VTABLE(u)->distribute_fds(u, fds); | |
1113 | if (r < 0) | |
1114 | return r; | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { | |
1122 | int r, q; | |
1123 | ||
1124 | assert(m); | |
1125 | ||
1126 | dual_timestamp_get(&m->generators_start_timestamp); | |
1127 | r = manager_run_generators(m); | |
1128 | dual_timestamp_get(&m->generators_finish_timestamp); | |
1129 | if (r < 0) | |
1130 | return r; | |
1131 | ||
1132 | r = lookup_paths_init( | |
1133 | &m->lookup_paths, m->running_as, true, | |
1134 | NULL, | |
1135 | m->generator_unit_path, | |
1136 | m->generator_unit_path_early, | |
1137 | m->generator_unit_path_late); | |
1138 | if (r < 0) | |
1139 | return r; | |
1140 | ||
1141 | manager_build_unit_path_cache(m); | |
1142 | ||
1143 | /* If we will deserialize make sure that during enumeration | |
1144 | * this is already known, so we increase the counter here | |
1145 | * already */ | |
1146 | if (serialization) | |
1147 | m->n_reloading ++; | |
1148 | ||
1149 | /* First, enumerate what we can from all config files */ | |
1150 | dual_timestamp_get(&m->units_load_start_timestamp); | |
1151 | r = manager_enumerate(m); | |
1152 | dual_timestamp_get(&m->units_load_finish_timestamp); | |
1153 | ||
1154 | /* Second, deserialize if there is something to deserialize */ | |
1155 | if (serialization) | |
1156 | r = manager_deserialize(m, serialization, fds); | |
1157 | ||
1158 | /* Any fds left? Find some unit which wants them. This is | |
1159 | * useful to allow container managers to pass some file | |
1160 | * descriptors to us pre-initialized. This enables | |
1161 | * socket-based activation of entire containers. */ | |
1162 | if (fdset_size(fds) > 0) { | |
1163 | q = manager_distribute_fds(m, fds); | |
1164 | if (q < 0 && r == 0) | |
1165 | r = q; | |
1166 | } | |
1167 | ||
1168 | /* We might have deserialized the notify fd, but if we didn't | |
1169 | * then let's create the bus now */ | |
1170 | q = manager_setup_notify(m); | |
1171 | if (q < 0 && r == 0) | |
1172 | r = q; | |
1173 | ||
1174 | /* We might have deserialized the kdbus control fd, but if we | |
1175 | * didn't, then let's create the bus now. */ | |
1176 | manager_setup_kdbus(m); | |
1177 | manager_connect_bus(m, !!serialization); | |
1178 | bus_track_coldplug(m, &m->subscribed, &m->deserialized_subscribed); | |
1179 | ||
1180 | /* Third, fire things up! */ | |
1181 | manager_coldplug(m); | |
1182 | ||
1183 | if (serialization) { | |
1184 | assert(m->n_reloading > 0); | |
1185 | m->n_reloading --; | |
1186 | ||
1187 | /* Let's wait for the UnitNew/JobNew messages being | |
1188 | * sent, before we notify that the reload is | |
1189 | * finished */ | |
1190 | m->send_reloading_done = true; | |
1191 | } | |
1192 | ||
1193 | return r; | |
1194 | } | |
1195 | ||
1196 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, sd_bus_error *e, Job **_ret) { | |
1197 | int r; | |
1198 | Transaction *tr; | |
1199 | ||
1200 | assert(m); | |
1201 | assert(type < _JOB_TYPE_MAX); | |
1202 | assert(unit); | |
1203 | assert(mode < _JOB_MODE_MAX); | |
1204 | ||
1205 | if (mode == JOB_ISOLATE && type != JOB_START) | |
1206 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
1207 | ||
1208 | if (mode == JOB_ISOLATE && !unit->allow_isolate) | |
1209 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
1210 | ||
1211 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); | |
1212 | ||
1213 | type = job_type_collapse(type, unit); | |
1214 | ||
1215 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1216 | if (!tr) | |
1217 | return -ENOMEM; | |
1218 | ||
1219 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false, | |
1220 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
1221 | mode == JOB_IGNORE_DEPENDENCIES, e); | |
1222 | if (r < 0) | |
1223 | goto tr_abort; | |
1224 | ||
1225 | if (mode == JOB_ISOLATE) { | |
1226 | r = transaction_add_isolate_jobs(tr, m); | |
1227 | if (r < 0) | |
1228 | goto tr_abort; | |
1229 | } | |
1230 | ||
1231 | r = transaction_activate(tr, m, mode, e); | |
1232 | if (r < 0) | |
1233 | goto tr_abort; | |
1234 | ||
1235 | log_unit_debug(unit, | |
1236 | "Enqueued job %s/%s as %u", unit->id, | |
1237 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
1238 | ||
1239 | if (_ret) | |
1240 | *_ret = tr->anchor_job; | |
1241 | ||
1242 | transaction_free(tr); | |
1243 | return 0; | |
1244 | ||
1245 | tr_abort: | |
1246 | transaction_abort(tr); | |
1247 | transaction_free(tr); | |
1248 | return r; | |
1249 | } | |
1250 | ||
1251 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, sd_bus_error *e, Job **_ret) { | |
1252 | Unit *unit; | |
1253 | int r; | |
1254 | ||
1255 | assert(m); | |
1256 | assert(type < _JOB_TYPE_MAX); | |
1257 | assert(name); | |
1258 | assert(mode < _JOB_MODE_MAX); | |
1259 | ||
1260 | r = manager_load_unit(m, name, NULL, NULL, &unit); | |
1261 | if (r < 0) | |
1262 | return r; | |
1263 | ||
1264 | return manager_add_job(m, type, unit, mode, override, e, _ret); | |
1265 | } | |
1266 | ||
1267 | Job *manager_get_job(Manager *m, uint32_t id) { | |
1268 | assert(m); | |
1269 | ||
1270 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1271 | } | |
1272 | ||
1273 | Unit *manager_get_unit(Manager *m, const char *name) { | |
1274 | assert(m); | |
1275 | assert(name); | |
1276 | ||
1277 | return hashmap_get(m->units, name); | |
1278 | } | |
1279 | ||
1280 | unsigned manager_dispatch_load_queue(Manager *m) { | |
1281 | Unit *u; | |
1282 | unsigned n = 0; | |
1283 | ||
1284 | assert(m); | |
1285 | ||
1286 | /* Make sure we are not run recursively */ | |
1287 | if (m->dispatching_load_queue) | |
1288 | return 0; | |
1289 | ||
1290 | m->dispatching_load_queue = true; | |
1291 | ||
1292 | /* Dispatches the load queue. Takes a unit from the queue and | |
1293 | * tries to load its data until the queue is empty */ | |
1294 | ||
1295 | while ((u = m->load_queue)) { | |
1296 | assert(u->in_load_queue); | |
1297 | ||
1298 | unit_load(u); | |
1299 | n++; | |
1300 | } | |
1301 | ||
1302 | m->dispatching_load_queue = false; | |
1303 | return n; | |
1304 | } | |
1305 | ||
1306 | int manager_load_unit_prepare( | |
1307 | Manager *m, | |
1308 | const char *name, | |
1309 | const char *path, | |
1310 | sd_bus_error *e, | |
1311 | Unit **_ret) { | |
1312 | ||
1313 | Unit *ret; | |
1314 | UnitType t; | |
1315 | int r; | |
1316 | ||
1317 | assert(m); | |
1318 | assert(name || path); | |
1319 | ||
1320 | /* This will prepare the unit for loading, but not actually | |
1321 | * load anything from disk. */ | |
1322 | ||
1323 | if (path && !is_path(path)) | |
1324 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
1325 | ||
1326 | if (!name) | |
1327 | name = basename(path); | |
1328 | ||
1329 | t = unit_name_to_type(name); | |
1330 | ||
1331 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
1332 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); | |
1333 | ||
1334 | ret = manager_get_unit(m, name); | |
1335 | if (ret) { | |
1336 | *_ret = ret; | |
1337 | return 1; | |
1338 | } | |
1339 | ||
1340 | ret = unit_new(m, unit_vtable[t]->object_size); | |
1341 | if (!ret) | |
1342 | return -ENOMEM; | |
1343 | ||
1344 | if (path) { | |
1345 | ret->fragment_path = strdup(path); | |
1346 | if (!ret->fragment_path) { | |
1347 | unit_free(ret); | |
1348 | return -ENOMEM; | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | r = unit_add_name(ret, name); | |
1353 | if (r < 0) { | |
1354 | unit_free(ret); | |
1355 | return r; | |
1356 | } | |
1357 | ||
1358 | unit_add_to_load_queue(ret); | |
1359 | unit_add_to_dbus_queue(ret); | |
1360 | unit_add_to_gc_queue(ret); | |
1361 | ||
1362 | if (_ret) | |
1363 | *_ret = ret; | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | int manager_load_unit( | |
1369 | Manager *m, | |
1370 | const char *name, | |
1371 | const char *path, | |
1372 | sd_bus_error *e, | |
1373 | Unit **_ret) { | |
1374 | ||
1375 | int r; | |
1376 | ||
1377 | assert(m); | |
1378 | ||
1379 | /* This will load the service information files, but not actually | |
1380 | * start any services or anything. */ | |
1381 | ||
1382 | r = manager_load_unit_prepare(m, name, path, e, _ret); | |
1383 | if (r != 0) | |
1384 | return r; | |
1385 | ||
1386 | manager_dispatch_load_queue(m); | |
1387 | ||
1388 | if (_ret) | |
1389 | *_ret = unit_follow_merge(*_ret); | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { | |
1395 | Iterator i; | |
1396 | Job *j; | |
1397 | ||
1398 | assert(s); | |
1399 | assert(f); | |
1400 | ||
1401 | HASHMAP_FOREACH(j, s->jobs, i) | |
1402 | job_dump(j, f, prefix); | |
1403 | } | |
1404 | ||
1405 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { | |
1406 | Iterator i; | |
1407 | Unit *u; | |
1408 | const char *t; | |
1409 | ||
1410 | assert(s); | |
1411 | assert(f); | |
1412 | ||
1413 | HASHMAP_FOREACH_KEY(u, t, s->units, i) | |
1414 | if (u->id == t) | |
1415 | unit_dump(u, f, prefix); | |
1416 | } | |
1417 | ||
1418 | void manager_clear_jobs(Manager *m) { | |
1419 | Job *j; | |
1420 | ||
1421 | assert(m); | |
1422 | ||
1423 | while ((j = hashmap_first(m->jobs))) | |
1424 | /* No need to recurse. We're cancelling all jobs. */ | |
1425 | job_finish_and_invalidate(j, JOB_CANCELED, false); | |
1426 | } | |
1427 | ||
1428 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { | |
1429 | Manager *m = userdata; | |
1430 | Job *j; | |
1431 | ||
1432 | assert(source); | |
1433 | assert(m); | |
1434 | ||
1435 | while ((j = m->run_queue)) { | |
1436 | assert(j->installed); | |
1437 | assert(j->in_run_queue); | |
1438 | ||
1439 | job_run_and_invalidate(j); | |
1440 | } | |
1441 | ||
1442 | if (m->n_running_jobs > 0) | |
1443 | manager_watch_jobs_in_progress(m); | |
1444 | ||
1445 | if (m->n_on_console > 0) | |
1446 | manager_watch_idle_pipe(m); | |
1447 | ||
1448 | return 1; | |
1449 | } | |
1450 | ||
1451 | static unsigned manager_dispatch_dbus_queue(Manager *m) { | |
1452 | Job *j; | |
1453 | Unit *u; | |
1454 | unsigned n = 0; | |
1455 | ||
1456 | assert(m); | |
1457 | ||
1458 | if (m->dispatching_dbus_queue) | |
1459 | return 0; | |
1460 | ||
1461 | m->dispatching_dbus_queue = true; | |
1462 | ||
1463 | while ((u = m->dbus_unit_queue)) { | |
1464 | assert(u->in_dbus_queue); | |
1465 | ||
1466 | bus_unit_send_change_signal(u); | |
1467 | n++; | |
1468 | } | |
1469 | ||
1470 | while ((j = m->dbus_job_queue)) { | |
1471 | assert(j->in_dbus_queue); | |
1472 | ||
1473 | bus_job_send_change_signal(j); | |
1474 | n++; | |
1475 | } | |
1476 | ||
1477 | m->dispatching_dbus_queue = false; | |
1478 | ||
1479 | if (m->send_reloading_done) { | |
1480 | m->send_reloading_done = false; | |
1481 | ||
1482 | bus_manager_send_reloading(m, false); | |
1483 | } | |
1484 | ||
1485 | if (m->queued_message) | |
1486 | bus_send_queued_message(m); | |
1487 | ||
1488 | return n; | |
1489 | } | |
1490 | ||
1491 | static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, char *buf, size_t n, FDSet *fds) { | |
1492 | _cleanup_strv_free_ char **tags = NULL; | |
1493 | ||
1494 | assert(m); | |
1495 | assert(u); | |
1496 | assert(buf); | |
1497 | assert(n > 0); | |
1498 | ||
1499 | tags = strv_split(buf, "\n\r"); | |
1500 | if (!tags) { | |
1501 | log_oom(); | |
1502 | return; | |
1503 | } | |
1504 | ||
1505 | if (UNIT_VTABLE(u)->notify_message) | |
1506 | UNIT_VTABLE(u)->notify_message(u, pid, tags, fds); | |
1507 | else | |
1508 | log_unit_debug(u, "Got notification message for unit. Ignoring."); | |
1509 | } | |
1510 | ||
1511 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
1512 | Manager *m = userdata; | |
1513 | ssize_t n; | |
1514 | int r; | |
1515 | ||
1516 | assert(m); | |
1517 | assert(m->notify_fd == fd); | |
1518 | ||
1519 | if (revents != EPOLLIN) { | |
1520 | log_warning("Got unexpected poll event for notify fd."); | |
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | for (;;) { | |
1525 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
1526 | char buf[NOTIFY_BUFFER_MAX+1]; | |
1527 | struct iovec iovec = { | |
1528 | .iov_base = buf, | |
1529 | .iov_len = sizeof(buf)-1, | |
1530 | }; | |
1531 | union { | |
1532 | struct cmsghdr cmsghdr; | |
1533 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1534 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1535 | } control = {}; | |
1536 | struct msghdr msghdr = { | |
1537 | .msg_iov = &iovec, | |
1538 | .msg_iovlen = 1, | |
1539 | .msg_control = &control, | |
1540 | .msg_controllen = sizeof(control), | |
1541 | }; | |
1542 | struct cmsghdr *cmsg; | |
1543 | struct ucred *ucred = NULL; | |
1544 | bool found = false; | |
1545 | Unit *u1, *u2, *u3; | |
1546 | int *fd_array = NULL; | |
1547 | unsigned n_fds = 0; | |
1548 | ||
1549 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC); | |
1550 | if (n < 0) { | |
1551 | if (errno == EAGAIN || errno == EINTR) | |
1552 | break; | |
1553 | ||
1554 | return -errno; | |
1555 | } | |
1556 | ||
1557 | CMSG_FOREACH(cmsg, &msghdr) { | |
1558 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
1559 | ||
1560 | fd_array = (int*) CMSG_DATA(cmsg); | |
1561 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
1562 | ||
1563 | } else if (cmsg->cmsg_level == SOL_SOCKET && | |
1564 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1565 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
1566 | ||
1567 | ucred = (struct ucred*) CMSG_DATA(cmsg); | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | if (n_fds > 0) { | |
1572 | assert(fd_array); | |
1573 | ||
1574 | r = fdset_new_array(&fds, fd_array, n_fds); | |
1575 | if (r < 0) { | |
1576 | close_many(fd_array, n_fds); | |
1577 | return log_oom(); | |
1578 | } | |
1579 | } | |
1580 | ||
1581 | if (!ucred || ucred->pid <= 0) { | |
1582 | log_warning("Received notify message without valid credentials. Ignoring."); | |
1583 | continue; | |
1584 | } | |
1585 | ||
1586 | if ((size_t) n >= sizeof(buf)) { | |
1587 | log_warning("Received notify message exceeded maximum size. Ignoring."); | |
1588 | continue; | |
1589 | } | |
1590 | ||
1591 | buf[n] = 0; | |
1592 | ||
1593 | /* Notify every unit that might be interested, but try | |
1594 | * to avoid notifying the same one multiple times. */ | |
1595 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); | |
1596 | if (u1) { | |
1597 | manager_invoke_notify_message(m, u1, ucred->pid, buf, n, fds); | |
1598 | found = true; | |
1599 | } | |
1600 | ||
1601 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); | |
1602 | if (u2 && u2 != u1) { | |
1603 | manager_invoke_notify_message(m, u2, ucred->pid, buf, n, fds); | |
1604 | found = true; | |
1605 | } | |
1606 | ||
1607 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); | |
1608 | if (u3 && u3 != u2 && u3 != u1) { | |
1609 | manager_invoke_notify_message(m, u3, ucred->pid, buf, n, fds); | |
1610 | found = true; | |
1611 | } | |
1612 | ||
1613 | if (!found) | |
1614 | log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); | |
1615 | ||
1616 | if (fdset_size(fds) > 0) | |
1617 | log_warning("Got auxiliary fds with notification message, closing all."); | |
1618 | } | |
1619 | ||
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | static void invoke_sigchld_event(Manager *m, Unit *u, siginfo_t *si) { | |
1624 | assert(m); | |
1625 | assert(u); | |
1626 | assert(si); | |
1627 | ||
1628 | log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); | |
1629 | ||
1630 | unit_unwatch_pid(u, si->si_pid); | |
1631 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); | |
1632 | } | |
1633 | ||
1634 | static int manager_dispatch_sigchld(Manager *m) { | |
1635 | assert(m); | |
1636 | ||
1637 | for (;;) { | |
1638 | siginfo_t si = {}; | |
1639 | ||
1640 | /* First we call waitd() for a PID and do not reap the | |
1641 | * zombie. That way we can still access /proc/$PID for | |
1642 | * it while it is a zombie. */ | |
1643 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
1644 | ||
1645 | if (errno == ECHILD) | |
1646 | break; | |
1647 | ||
1648 | if (errno == EINTR) | |
1649 | continue; | |
1650 | ||
1651 | return -errno; | |
1652 | } | |
1653 | ||
1654 | if (si.si_pid <= 0) | |
1655 | break; | |
1656 | ||
1657 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { | |
1658 | _cleanup_free_ char *name = NULL; | |
1659 | Unit *u1, *u2, *u3; | |
1660 | ||
1661 | get_process_comm(si.si_pid, &name); | |
1662 | ||
1663 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", | |
1664 | si.si_pid, strna(name), | |
1665 | sigchld_code_to_string(si.si_code), | |
1666 | si.si_status, | |
1667 | strna(si.si_code == CLD_EXITED | |
1668 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1669 | : signal_to_string(si.si_status))); | |
1670 | ||
1671 | /* And now figure out the unit this belongs | |
1672 | * to, it might be multiple... */ | |
1673 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); | |
1674 | if (u1) | |
1675 | invoke_sigchld_event(m, u1, &si); | |
1676 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid)); | |
1677 | if (u2 && u2 != u1) | |
1678 | invoke_sigchld_event(m, u2, &si); | |
1679 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid)); | |
1680 | if (u3 && u3 != u2 && u3 != u1) | |
1681 | invoke_sigchld_event(m, u3, &si); | |
1682 | } | |
1683 | ||
1684 | /* And now, we actually reap the zombie. */ | |
1685 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1686 | if (errno == EINTR) | |
1687 | continue; | |
1688 | ||
1689 | return -errno; | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | return 0; | |
1694 | } | |
1695 | ||
1696 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { | |
1697 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
1698 | int r; | |
1699 | ||
1700 | log_debug("Activating special unit %s", name); | |
1701 | ||
1702 | r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL); | |
1703 | if (r < 0) | |
1704 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); | |
1705 | ||
1706 | return r; | |
1707 | } | |
1708 | ||
1709 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
1710 | Manager *m = userdata; | |
1711 | ssize_t n; | |
1712 | struct signalfd_siginfo sfsi; | |
1713 | bool sigchld = false; | |
1714 | int r; | |
1715 | ||
1716 | assert(m); | |
1717 | assert(m->signal_fd == fd); | |
1718 | ||
1719 | if (revents != EPOLLIN) { | |
1720 | log_warning("Got unexpected events from signal file descriptor."); | |
1721 | return 0; | |
1722 | } | |
1723 | ||
1724 | for (;;) { | |
1725 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); | |
1726 | if (n != sizeof(sfsi)) { | |
1727 | ||
1728 | if (n >= 0) | |
1729 | return -EIO; | |
1730 | ||
1731 | if (errno == EINTR || errno == EAGAIN) | |
1732 | break; | |
1733 | ||
1734 | return -errno; | |
1735 | } | |
1736 | ||
1737 | log_received_signal(sfsi.ssi_signo == SIGCHLD || | |
1738 | (sfsi.ssi_signo == SIGTERM && m->running_as == MANAGER_USER) | |
1739 | ? LOG_DEBUG : LOG_INFO, | |
1740 | &sfsi); | |
1741 | ||
1742 | switch (sfsi.ssi_signo) { | |
1743 | ||
1744 | case SIGCHLD: | |
1745 | sigchld = true; | |
1746 | break; | |
1747 | ||
1748 | case SIGTERM: | |
1749 | if (m->running_as == MANAGER_SYSTEM) { | |
1750 | /* This is for compatibility with the | |
1751 | * original sysvinit */ | |
1752 | m->exit_code = MANAGER_REEXECUTE; | |
1753 | break; | |
1754 | } | |
1755 | ||
1756 | /* Fall through */ | |
1757 | ||
1758 | case SIGINT: | |
1759 | if (m->running_as == MANAGER_SYSTEM) { | |
1760 | ||
1761 | /* If the user presses C-A-D more than | |
1762 | * 7 times within 2s, we reboot | |
1763 | * immediately. */ | |
1764 | ||
1765 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit)) | |
1766 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); | |
1767 | else { | |
1768 | log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately."); | |
1769 | status_printf(NULL, true, false, "Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately."); | |
1770 | m->exit_code = MANAGER_REBOOT; | |
1771 | } | |
1772 | ||
1773 | break; | |
1774 | } | |
1775 | ||
1776 | /* Run the exit target if there is one, if not, just exit. */ | |
1777 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { | |
1778 | m->exit_code = MANAGER_EXIT; | |
1779 | return 0; | |
1780 | } | |
1781 | ||
1782 | break; | |
1783 | ||
1784 | case SIGWINCH: | |
1785 | if (m->running_as == MANAGER_SYSTEM) | |
1786 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); | |
1787 | ||
1788 | /* This is a nop on non-init */ | |
1789 | break; | |
1790 | ||
1791 | case SIGPWR: | |
1792 | if (m->running_as == MANAGER_SYSTEM) | |
1793 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); | |
1794 | ||
1795 | /* This is a nop on non-init */ | |
1796 | break; | |
1797 | ||
1798 | case SIGUSR1: { | |
1799 | Unit *u; | |
1800 | ||
1801 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1802 | ||
1803 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
1804 | log_info("Trying to reconnect to bus..."); | |
1805 | bus_init(m, true); | |
1806 | } | |
1807 | ||
1808 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
1809 | log_info("Loading D-Bus service..."); | |
1810 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); | |
1811 | } | |
1812 | ||
1813 | break; | |
1814 | } | |
1815 | ||
1816 | case SIGUSR2: { | |
1817 | _cleanup_free_ char *dump = NULL; | |
1818 | _cleanup_fclose_ FILE *f = NULL; | |
1819 | size_t size; | |
1820 | ||
1821 | f = open_memstream(&dump, &size); | |
1822 | if (!f) { | |
1823 | log_warning_errno(errno, "Failed to allocate memory stream: %m"); | |
1824 | break; | |
1825 | } | |
1826 | ||
1827 | manager_dump_units(m, f, "\t"); | |
1828 | manager_dump_jobs(m, f, "\t"); | |
1829 | ||
1830 | r = fflush_and_check(f); | |
1831 | if (r < 0) { | |
1832 | log_warning_errno(r, "Failed to write status stream: %m"); | |
1833 | break; | |
1834 | } | |
1835 | ||
1836 | log_dump(LOG_INFO, dump); | |
1837 | break; | |
1838 | } | |
1839 | ||
1840 | case SIGHUP: | |
1841 | m->exit_code = MANAGER_RELOAD; | |
1842 | break; | |
1843 | ||
1844 | default: { | |
1845 | ||
1846 | /* Starting SIGRTMIN+0 */ | |
1847 | static const char * const target_table[] = { | |
1848 | [0] = SPECIAL_DEFAULT_TARGET, | |
1849 | [1] = SPECIAL_RESCUE_TARGET, | |
1850 | [2] = SPECIAL_EMERGENCY_TARGET, | |
1851 | [3] = SPECIAL_HALT_TARGET, | |
1852 | [4] = SPECIAL_POWEROFF_TARGET, | |
1853 | [5] = SPECIAL_REBOOT_TARGET, | |
1854 | [6] = SPECIAL_KEXEC_TARGET | |
1855 | }; | |
1856 | ||
1857 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
1858 | static const ManagerExitCode code_table[] = { | |
1859 | [0] = MANAGER_HALT, | |
1860 | [1] = MANAGER_POWEROFF, | |
1861 | [2] = MANAGER_REBOOT, | |
1862 | [3] = MANAGER_KEXEC | |
1863 | }; | |
1864 | ||
1865 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
1866 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { | |
1867 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; | |
1868 | manager_start_target(m, target_table[idx], | |
1869 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
1870 | break; | |
1871 | } | |
1872 | ||
1873 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && | |
1874 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
1875 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
1876 | break; | |
1877 | } | |
1878 | ||
1879 | switch (sfsi.ssi_signo - SIGRTMIN) { | |
1880 | ||
1881 | case 20: | |
1882 | log_debug("Enabling showing of status."); | |
1883 | manager_set_show_status(m, SHOW_STATUS_YES); | |
1884 | break; | |
1885 | ||
1886 | case 21: | |
1887 | log_debug("Disabling showing of status."); | |
1888 | manager_set_show_status(m, SHOW_STATUS_NO); | |
1889 | break; | |
1890 | ||
1891 | case 22: | |
1892 | log_set_max_level(LOG_DEBUG); | |
1893 | log_notice("Setting log level to debug."); | |
1894 | break; | |
1895 | ||
1896 | case 23: | |
1897 | log_set_max_level(LOG_INFO); | |
1898 | log_notice("Setting log level to info."); | |
1899 | break; | |
1900 | ||
1901 | case 24: | |
1902 | if (m->running_as == MANAGER_USER) { | |
1903 | m->exit_code = MANAGER_EXIT; | |
1904 | return 0; | |
1905 | } | |
1906 | ||
1907 | /* This is a nop on init */ | |
1908 | break; | |
1909 | ||
1910 | case 26: | |
1911 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ | |
1912 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
1913 | log_notice("Setting log target to journal-or-kmsg."); | |
1914 | break; | |
1915 | ||
1916 | case 27: | |
1917 | log_set_target(LOG_TARGET_CONSOLE); | |
1918 | log_notice("Setting log target to console."); | |
1919 | break; | |
1920 | ||
1921 | case 28: | |
1922 | log_set_target(LOG_TARGET_KMSG); | |
1923 | log_notice("Setting log target to kmsg."); | |
1924 | break; | |
1925 | ||
1926 | default: | |
1927 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); | |
1928 | } | |
1929 | } | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | if (sigchld) | |
1934 | manager_dispatch_sigchld(m); | |
1935 | ||
1936 | return 0; | |
1937 | } | |
1938 | ||
1939 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
1940 | Manager *m = userdata; | |
1941 | Iterator i; | |
1942 | Unit *u; | |
1943 | ||
1944 | assert(m); | |
1945 | assert(m->time_change_fd == fd); | |
1946 | ||
1947 | log_struct(LOG_INFO, | |
1948 | LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), | |
1949 | LOG_MESSAGE("Time has been changed"), | |
1950 | NULL); | |
1951 | ||
1952 | /* Restart the watch */ | |
1953 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
1954 | m->time_change_fd = safe_close(m->time_change_fd); | |
1955 | ||
1956 | manager_setup_time_change(m); | |
1957 | ||
1958 | HASHMAP_FOREACH(u, m->units, i) | |
1959 | if (UNIT_VTABLE(u)->time_change) | |
1960 | UNIT_VTABLE(u)->time_change(u); | |
1961 | ||
1962 | return 0; | |
1963 | } | |
1964 | ||
1965 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
1966 | Manager *m = userdata; | |
1967 | ||
1968 | assert(m); | |
1969 | assert(m->idle_pipe[2] == fd); | |
1970 | ||
1971 | m->no_console_output = m->n_on_console > 0; | |
1972 | ||
1973 | manager_close_idle_pipe(m); | |
1974 | ||
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { | |
1979 | Manager *m = userdata; | |
1980 | int r; | |
1981 | uint64_t next; | |
1982 | ||
1983 | assert(m); | |
1984 | assert(source); | |
1985 | ||
1986 | manager_print_jobs_in_progress(m); | |
1987 | ||
1988 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
1989 | r = sd_event_source_set_time(source, next); | |
1990 | if (r < 0) | |
1991 | return r; | |
1992 | ||
1993 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
1994 | } | |
1995 | ||
1996 | int manager_loop(Manager *m) { | |
1997 | int r; | |
1998 | ||
1999 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); | |
2000 | ||
2001 | assert(m); | |
2002 | m->exit_code = MANAGER_OK; | |
2003 | ||
2004 | /* Release the path cache */ | |
2005 | set_free_free(m->unit_path_cache); | |
2006 | m->unit_path_cache = NULL; | |
2007 | ||
2008 | manager_check_finished(m); | |
2009 | ||
2010 | /* There might still be some zombies hanging around from | |
2011 | * before we were exec()'ed. Let's reap them. */ | |
2012 | r = manager_dispatch_sigchld(m); | |
2013 | if (r < 0) | |
2014 | return r; | |
2015 | ||
2016 | while (m->exit_code == MANAGER_OK) { | |
2017 | usec_t wait_usec; | |
2018 | ||
2019 | if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) | |
2020 | watchdog_ping(); | |
2021 | ||
2022 | if (!ratelimit_test(&rl)) { | |
2023 | /* Yay, something is going seriously wrong, pause a little */ | |
2024 | log_warning("Looping too fast. Throttling execution a little."); | |
2025 | sleep(1); | |
2026 | continue; | |
2027 | } | |
2028 | ||
2029 | if (manager_dispatch_load_queue(m) > 0) | |
2030 | continue; | |
2031 | ||
2032 | if (manager_dispatch_gc_queue(m) > 0) | |
2033 | continue; | |
2034 | ||
2035 | if (manager_dispatch_cleanup_queue(m) > 0) | |
2036 | continue; | |
2037 | ||
2038 | if (manager_dispatch_cgroup_queue(m) > 0) | |
2039 | continue; | |
2040 | ||
2041 | if (manager_dispatch_dbus_queue(m) > 0) | |
2042 | continue; | |
2043 | ||
2044 | /* Sleep for half the watchdog time */ | |
2045 | if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) { | |
2046 | wait_usec = m->runtime_watchdog / 2; | |
2047 | if (wait_usec <= 0) | |
2048 | wait_usec = 1; | |
2049 | } else | |
2050 | wait_usec = USEC_INFINITY; | |
2051 | ||
2052 | r = sd_event_run(m->event, wait_usec); | |
2053 | if (r < 0) | |
2054 | return log_error_errno(r, "Failed to run event loop: %m"); | |
2055 | } | |
2056 | ||
2057 | return m->exit_code; | |
2058 | } | |
2059 | ||
2060 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { | |
2061 | _cleanup_free_ char *n = NULL; | |
2062 | Unit *u; | |
2063 | int r; | |
2064 | ||
2065 | assert(m); | |
2066 | assert(s); | |
2067 | assert(_u); | |
2068 | ||
2069 | r = unit_name_from_dbus_path(s, &n); | |
2070 | if (r < 0) | |
2071 | return r; | |
2072 | ||
2073 | r = manager_load_unit(m, n, NULL, e, &u); | |
2074 | if (r < 0) | |
2075 | return r; | |
2076 | ||
2077 | *_u = u; | |
2078 | ||
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
2083 | const char *p; | |
2084 | unsigned id; | |
2085 | Job *j; | |
2086 | int r; | |
2087 | ||
2088 | assert(m); | |
2089 | assert(s); | |
2090 | assert(_j); | |
2091 | ||
2092 | p = startswith(s, "/org/freedesktop/systemd1/job/"); | |
2093 | if (!p) | |
2094 | return -EINVAL; | |
2095 | ||
2096 | r = safe_atou(p, &id); | |
2097 | if (r < 0) | |
2098 | return r; | |
2099 | ||
2100 | j = manager_get_job(m, id); | |
2101 | if (!j) | |
2102 | return -ENOENT; | |
2103 | ||
2104 | *_j = j; | |
2105 | ||
2106 | return 0; | |
2107 | } | |
2108 | ||
2109 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { | |
2110 | ||
2111 | #ifdef HAVE_AUDIT | |
2112 | _cleanup_free_ char *p = NULL; | |
2113 | const char *msg; | |
2114 | int audit_fd, r; | |
2115 | ||
2116 | audit_fd = get_audit_fd(); | |
2117 | if (audit_fd < 0) | |
2118 | return; | |
2119 | ||
2120 | /* Don't generate audit events if the service was already | |
2121 | * started and we're just deserializing */ | |
2122 | if (m->n_reloading > 0) | |
2123 | return; | |
2124 | ||
2125 | if (m->running_as != MANAGER_SYSTEM) | |
2126 | return; | |
2127 | ||
2128 | if (u->type != UNIT_SERVICE) | |
2129 | return; | |
2130 | ||
2131 | r = unit_name_to_prefix_and_instance(u->id, &p); | |
2132 | if (r < 0) { | |
2133 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
2134 | return; | |
2135 | } | |
2136 | ||
2137 | msg = strjoina("unit=", p); | |
2138 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { | |
2139 | if (errno == EPERM) | |
2140 | /* We aren't allowed to send audit messages? | |
2141 | * Then let's not retry again. */ | |
2142 | close_audit_fd(); | |
2143 | else | |
2144 | log_warning_errno(errno, "Failed to send audit message: %m"); | |
2145 | } | |
2146 | #endif | |
2147 | ||
2148 | } | |
2149 | ||
2150 | void manager_send_unit_plymouth(Manager *m, Unit *u) { | |
2151 | union sockaddr_union sa = PLYMOUTH_SOCKET; | |
2152 | ||
2153 | int n = 0; | |
2154 | _cleanup_free_ char *message = NULL; | |
2155 | _cleanup_close_ int fd = -1; | |
2156 | ||
2157 | /* Don't generate plymouth events if the service was already | |
2158 | * started and we're just deserializing */ | |
2159 | if (m->n_reloading > 0) | |
2160 | return; | |
2161 | ||
2162 | if (m->running_as != MANAGER_SYSTEM) | |
2163 | return; | |
2164 | ||
2165 | if (detect_container() > 0) | |
2166 | return; | |
2167 | ||
2168 | if (u->type != UNIT_SERVICE && | |
2169 | u->type != UNIT_MOUNT && | |
2170 | u->type != UNIT_SWAP) | |
2171 | return; | |
2172 | ||
2173 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2174 | * message then wait for plymouth */ | |
2175 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
2176 | if (fd < 0) { | |
2177 | log_error_errno(errno, "socket() failed: %m"); | |
2178 | return; | |
2179 | } | |
2180 | ||
2181 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
2182 | ||
2183 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
2184 | log_error_errno(errno, "connect() failed: %m"); | |
2185 | return; | |
2186 | } | |
2187 | ||
2188 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { | |
2189 | log_oom(); | |
2190 | return; | |
2191 | } | |
2192 | ||
2193 | errno = 0; | |
2194 | if (write(fd, message, n + 1) != n + 1) | |
2195 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
2196 | log_error_errno(errno, "Failed to write Plymouth message: %m"); | |
2197 | } | |
2198 | ||
2199 | int manager_open_serialization(Manager *m, FILE **_f) { | |
2200 | const char *path; | |
2201 | int fd = -1; | |
2202 | FILE *f; | |
2203 | ||
2204 | assert(_f); | |
2205 | ||
2206 | path = m->running_as == MANAGER_SYSTEM ? "/run/systemd" : "/tmp"; | |
2207 | fd = open_tmpfile(path, O_RDWR|O_CLOEXEC); | |
2208 | if (fd < 0) | |
2209 | return -errno; | |
2210 | ||
2211 | log_debug("Serializing state to %s", path); | |
2212 | ||
2213 | f = fdopen(fd, "w+"); | |
2214 | if (!f) { | |
2215 | safe_close(fd); | |
2216 | return -errno; | |
2217 | } | |
2218 | ||
2219 | *_f = f; | |
2220 | ||
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { | |
2225 | Iterator i; | |
2226 | Unit *u; | |
2227 | const char *t; | |
2228 | char **e; | |
2229 | int r; | |
2230 | ||
2231 | assert(m); | |
2232 | assert(f); | |
2233 | assert(fds); | |
2234 | ||
2235 | m->n_reloading ++; | |
2236 | ||
2237 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); | |
2238 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
2239 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); | |
2240 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
2241 | ||
2242 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); | |
2243 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); | |
2244 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); | |
2245 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); | |
2246 | ||
2247 | if (!in_initrd()) { | |
2248 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); | |
2249 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); | |
2250 | dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp); | |
2251 | dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp); | |
2252 | dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp); | |
2253 | dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp); | |
2254 | dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp); | |
2255 | dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp); | |
2256 | } | |
2257 | ||
2258 | if (!switching_root) { | |
2259 | STRV_FOREACH(e, m->environment) { | |
2260 | _cleanup_free_ char *ce; | |
2261 | ||
2262 | ce = cescape(*e); | |
2263 | if (!ce) | |
2264 | return -ENOMEM; | |
2265 | ||
2266 | fprintf(f, "env=%s\n", *e); | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | if (m->notify_fd >= 0) { | |
2271 | int copy; | |
2272 | ||
2273 | copy = fdset_put_dup(fds, m->notify_fd); | |
2274 | if (copy < 0) | |
2275 | return copy; | |
2276 | ||
2277 | fprintf(f, "notify-fd=%i\n", copy); | |
2278 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2279 | } | |
2280 | ||
2281 | if (m->kdbus_fd >= 0) { | |
2282 | int copy; | |
2283 | ||
2284 | copy = fdset_put_dup(fds, m->kdbus_fd); | |
2285 | if (copy < 0) | |
2286 | return copy; | |
2287 | ||
2288 | fprintf(f, "kdbus-fd=%i\n", copy); | |
2289 | } | |
2290 | ||
2291 | bus_track_serialize(m->subscribed, f); | |
2292 | ||
2293 | fputc('\n', f); | |
2294 | ||
2295 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { | |
2296 | if (u->id != t) | |
2297 | continue; | |
2298 | ||
2299 | /* Start marker */ | |
2300 | fputs(u->id, f); | |
2301 | fputc('\n', f); | |
2302 | ||
2303 | r = unit_serialize(u, f, fds, !switching_root); | |
2304 | if (r < 0) { | |
2305 | m->n_reloading --; | |
2306 | return r; | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | assert(m->n_reloading > 0); | |
2311 | m->n_reloading --; | |
2312 | ||
2313 | if (ferror(f)) | |
2314 | return -EIO; | |
2315 | ||
2316 | r = bus_fdset_add_all(m, fds); | |
2317 | if (r < 0) | |
2318 | return r; | |
2319 | ||
2320 | return 0; | |
2321 | } | |
2322 | ||
2323 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2324 | int r = 0; | |
2325 | ||
2326 | assert(m); | |
2327 | assert(f); | |
2328 | ||
2329 | log_debug("Deserializing state..."); | |
2330 | ||
2331 | m->n_reloading ++; | |
2332 | ||
2333 | for (;;) { | |
2334 | char line[LINE_MAX], *l; | |
2335 | ||
2336 | if (!fgets(line, sizeof(line), f)) { | |
2337 | if (feof(f)) | |
2338 | r = 0; | |
2339 | else | |
2340 | r = -errno; | |
2341 | ||
2342 | goto finish; | |
2343 | } | |
2344 | ||
2345 | char_array_0(line); | |
2346 | l = strstrip(line); | |
2347 | ||
2348 | if (l[0] == 0) | |
2349 | break; | |
2350 | ||
2351 | if (startswith(l, "current-job-id=")) { | |
2352 | uint32_t id; | |
2353 | ||
2354 | if (safe_atou32(l+15, &id) < 0) | |
2355 | log_debug("Failed to parse current job id value %s", l+15); | |
2356 | else | |
2357 | m->current_job_id = MAX(m->current_job_id, id); | |
2358 | ||
2359 | } else if (startswith(l, "n-installed-jobs=")) { | |
2360 | uint32_t n; | |
2361 | ||
2362 | if (safe_atou32(l+17, &n) < 0) | |
2363 | log_debug("Failed to parse installed jobs counter %s", l+17); | |
2364 | else | |
2365 | m->n_installed_jobs += n; | |
2366 | ||
2367 | } else if (startswith(l, "n-failed-jobs=")) { | |
2368 | uint32_t n; | |
2369 | ||
2370 | if (safe_atou32(l+14, &n) < 0) | |
2371 | log_debug("Failed to parse failed jobs counter %s", l+14); | |
2372 | else | |
2373 | m->n_failed_jobs += n; | |
2374 | ||
2375 | } else if (startswith(l, "taint-usr=")) { | |
2376 | int b; | |
2377 | ||
2378 | b = parse_boolean(l+10); | |
2379 | if (b < 0) | |
2380 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
2381 | else | |
2382 | m->taint_usr = m->taint_usr || b; | |
2383 | ||
2384 | } else if (startswith(l, "firmware-timestamp=")) | |
2385 | dual_timestamp_deserialize(l+19, &m->firmware_timestamp); | |
2386 | else if (startswith(l, "loader-timestamp=")) | |
2387 | dual_timestamp_deserialize(l+17, &m->loader_timestamp); | |
2388 | else if (startswith(l, "kernel-timestamp=")) | |
2389 | dual_timestamp_deserialize(l+17, &m->kernel_timestamp); | |
2390 | else if (startswith(l, "initrd-timestamp=")) | |
2391 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); | |
2392 | else if (startswith(l, "userspace-timestamp=")) | |
2393 | dual_timestamp_deserialize(l+20, &m->userspace_timestamp); | |
2394 | else if (startswith(l, "finish-timestamp=")) | |
2395 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); | |
2396 | else if (startswith(l, "security-start-timestamp=")) | |
2397 | dual_timestamp_deserialize(l+25, &m->security_start_timestamp); | |
2398 | else if (startswith(l, "security-finish-timestamp=")) | |
2399 | dual_timestamp_deserialize(l+26, &m->security_finish_timestamp); | |
2400 | else if (startswith(l, "generators-start-timestamp=")) | |
2401 | dual_timestamp_deserialize(l+27, &m->generators_start_timestamp); | |
2402 | else if (startswith(l, "generators-finish-timestamp=")) | |
2403 | dual_timestamp_deserialize(l+28, &m->generators_finish_timestamp); | |
2404 | else if (startswith(l, "units-load-start-timestamp=")) | |
2405 | dual_timestamp_deserialize(l+27, &m->units_load_start_timestamp); | |
2406 | else if (startswith(l, "units-load-finish-timestamp=")) | |
2407 | dual_timestamp_deserialize(l+28, &m->units_load_finish_timestamp); | |
2408 | else if (startswith(l, "env=")) { | |
2409 | _cleanup_free_ char *uce = NULL; | |
2410 | char **e; | |
2411 | ||
2412 | r = cunescape(l + 4, UNESCAPE_RELAX, &uce); | |
2413 | if (r < 0) | |
2414 | goto finish; | |
2415 | ||
2416 | e = strv_env_set(m->environment, uce); | |
2417 | if (!e) { | |
2418 | r = -ENOMEM; | |
2419 | goto finish; | |
2420 | } | |
2421 | ||
2422 | strv_free(m->environment); | |
2423 | m->environment = e; | |
2424 | ||
2425 | } else if (startswith(l, "notify-fd=")) { | |
2426 | int fd; | |
2427 | ||
2428 | if (safe_atoi(l + 10, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2429 | log_debug("Failed to parse notify fd: %s", l + 10); | |
2430 | else { | |
2431 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); | |
2432 | safe_close(m->notify_fd); | |
2433 | m->notify_fd = fdset_remove(fds, fd); | |
2434 | } | |
2435 | ||
2436 | } else if (startswith(l, "notify-socket=")) { | |
2437 | char *n; | |
2438 | ||
2439 | n = strdup(l+14); | |
2440 | if (!n) { | |
2441 | r = -ENOMEM; | |
2442 | goto finish; | |
2443 | } | |
2444 | ||
2445 | free(m->notify_socket); | |
2446 | m->notify_socket = n; | |
2447 | ||
2448 | } else if (startswith(l, "kdbus-fd=")) { | |
2449 | int fd; | |
2450 | ||
2451 | if (safe_atoi(l + 9, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2452 | log_debug("Failed to parse kdbus fd: %s", l + 9); | |
2453 | else { | |
2454 | safe_close(m->kdbus_fd); | |
2455 | m->kdbus_fd = fdset_remove(fds, fd); | |
2456 | } | |
2457 | ||
2458 | } else { | |
2459 | int k; | |
2460 | ||
2461 | k = bus_track_deserialize_item(&m->deserialized_subscribed, l); | |
2462 | if (k < 0) | |
2463 | log_debug_errno(k, "Failed to deserialize bus tracker object: %m"); | |
2464 | else if (k == 0) | |
2465 | log_debug("Unknown serialization item '%s'", l); | |
2466 | } | |
2467 | } | |
2468 | ||
2469 | for (;;) { | |
2470 | Unit *u; | |
2471 | char name[UNIT_NAME_MAX+2]; | |
2472 | ||
2473 | /* Start marker */ | |
2474 | if (!fgets(name, sizeof(name), f)) { | |
2475 | if (feof(f)) | |
2476 | r = 0; | |
2477 | else | |
2478 | r = -errno; | |
2479 | ||
2480 | goto finish; | |
2481 | } | |
2482 | ||
2483 | char_array_0(name); | |
2484 | ||
2485 | r = manager_load_unit(m, strstrip(name), NULL, NULL, &u); | |
2486 | if (r < 0) | |
2487 | goto finish; | |
2488 | ||
2489 | r = unit_deserialize(u, f, fds); | |
2490 | if (r < 0) | |
2491 | goto finish; | |
2492 | } | |
2493 | ||
2494 | finish: | |
2495 | if (ferror(f)) | |
2496 | r = -EIO; | |
2497 | ||
2498 | assert(m->n_reloading > 0); | |
2499 | m->n_reloading --; | |
2500 | ||
2501 | return r; | |
2502 | } | |
2503 | ||
2504 | int manager_reload(Manager *m) { | |
2505 | int r, q; | |
2506 | _cleanup_fclose_ FILE *f = NULL; | |
2507 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
2508 | ||
2509 | assert(m); | |
2510 | ||
2511 | r = manager_open_serialization(m, &f); | |
2512 | if (r < 0) | |
2513 | return r; | |
2514 | ||
2515 | m->n_reloading ++; | |
2516 | bus_manager_send_reloading(m, true); | |
2517 | ||
2518 | fds = fdset_new(); | |
2519 | if (!fds) { | |
2520 | m->n_reloading --; | |
2521 | return -ENOMEM; | |
2522 | } | |
2523 | ||
2524 | r = manager_serialize(m, f, fds, false); | |
2525 | if (r < 0) { | |
2526 | m->n_reloading --; | |
2527 | return r; | |
2528 | } | |
2529 | ||
2530 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
2531 | m->n_reloading --; | |
2532 | return -errno; | |
2533 | } | |
2534 | ||
2535 | /* From here on there is no way back. */ | |
2536 | manager_clear_jobs_and_units(m); | |
2537 | manager_undo_generators(m); | |
2538 | lookup_paths_free(&m->lookup_paths); | |
2539 | ||
2540 | /* Find new unit paths */ | |
2541 | q = manager_run_generators(m); | |
2542 | if (q < 0 && r >= 0) | |
2543 | r = q; | |
2544 | ||
2545 | q = lookup_paths_init( | |
2546 | &m->lookup_paths, m->running_as, true, | |
2547 | NULL, | |
2548 | m->generator_unit_path, | |
2549 | m->generator_unit_path_early, | |
2550 | m->generator_unit_path_late); | |
2551 | if (q < 0 && r >= 0) | |
2552 | r = q; | |
2553 | ||
2554 | manager_build_unit_path_cache(m); | |
2555 | ||
2556 | /* First, enumerate what we can from all config files */ | |
2557 | q = manager_enumerate(m); | |
2558 | if (q < 0 && r >= 0) | |
2559 | r = q; | |
2560 | ||
2561 | /* Second, deserialize our stored data */ | |
2562 | q = manager_deserialize(m, f, fds); | |
2563 | if (q < 0 && r >= 0) | |
2564 | r = q; | |
2565 | ||
2566 | fclose(f); | |
2567 | f = NULL; | |
2568 | ||
2569 | /* Re-register notify_fd as event source */ | |
2570 | q = manager_setup_notify(m); | |
2571 | if (q < 0 && r >= 0) | |
2572 | r = q; | |
2573 | ||
2574 | /* Third, fire things up! */ | |
2575 | manager_coldplug(m); | |
2576 | ||
2577 | assert(m->n_reloading > 0); | |
2578 | m->n_reloading--; | |
2579 | ||
2580 | m->send_reloading_done = true; | |
2581 | ||
2582 | return r; | |
2583 | } | |
2584 | ||
2585 | bool manager_is_reloading_or_reexecuting(Manager *m) { | |
2586 | assert(m); | |
2587 | ||
2588 | return m->n_reloading != 0; | |
2589 | } | |
2590 | ||
2591 | void manager_reset_failed(Manager *m) { | |
2592 | Unit *u; | |
2593 | Iterator i; | |
2594 | ||
2595 | assert(m); | |
2596 | ||
2597 | HASHMAP_FOREACH(u, m->units, i) | |
2598 | unit_reset_failed(u); | |
2599 | } | |
2600 | ||
2601 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { | |
2602 | Unit *u; | |
2603 | ||
2604 | assert(m); | |
2605 | assert(name); | |
2606 | ||
2607 | /* Returns true if the unit is inactive or going down */ | |
2608 | u = manager_get_unit(m, name); | |
2609 | if (!u) | |
2610 | return true; | |
2611 | ||
2612 | return unit_inactive_or_pending(u); | |
2613 | } | |
2614 | ||
2615 | static void manager_notify_finished(Manager *m) { | |
2616 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; | |
2617 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; | |
2618 | ||
2619 | if (m->test_run) | |
2620 | return; | |
2621 | ||
2622 | if (m->running_as == MANAGER_SYSTEM && detect_container() <= 0) { | |
2623 | ||
2624 | /* Note that m->kernel_usec.monotonic is always at 0, | |
2625 | * and m->firmware_usec.monotonic and | |
2626 | * m->loader_usec.monotonic should be considered | |
2627 | * negative values. */ | |
2628 | ||
2629 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; | |
2630 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
2631 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
2632 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; | |
2633 | ||
2634 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { | |
2635 | ||
2636 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
2637 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
2638 | ||
2639 | log_struct(LOG_INFO, | |
2640 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), | |
2641 | "KERNEL_USEC="USEC_FMT, kernel_usec, | |
2642 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
2643 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
2644 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", | |
2645 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2646 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
2647 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2648 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
2649 | NULL); | |
2650 | } else { | |
2651 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
2652 | initrd_usec = 0; | |
2653 | ||
2654 | log_struct(LOG_INFO, | |
2655 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), | |
2656 | "KERNEL_USEC="USEC_FMT, kernel_usec, | |
2657 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
2658 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.", | |
2659 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
2660 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
2661 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
2662 | NULL); | |
2663 | } | |
2664 | } else { | |
2665 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; | |
2666 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
2667 | ||
2668 | log_struct(LOG_INFO, | |
2669 | LOG_MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), | |
2670 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
2671 | LOG_MESSAGE("Startup finished in %s.", | |
2672 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
2673 | NULL); | |
2674 | } | |
2675 | ||
2676 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); | |
2677 | ||
2678 | sd_notifyf(false, | |
2679 | "READY=1\n" | |
2680 | "STATUS=Startup finished in %s.", | |
2681 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); | |
2682 | } | |
2683 | ||
2684 | void manager_check_finished(Manager *m) { | |
2685 | assert(m); | |
2686 | ||
2687 | if (m->n_reloading > 0) | |
2688 | return; | |
2689 | ||
2690 | /* Verify that we are actually running currently. Initially | |
2691 | * the exit code is set to invalid, and during operation it is | |
2692 | * then set to MANAGER_OK */ | |
2693 | if (m->exit_code != MANAGER_OK) | |
2694 | return; | |
2695 | ||
2696 | if (hashmap_size(m->jobs) > 0) { | |
2697 | if (m->jobs_in_progress_event_source) | |
2698 | /* Ignore any failure, this is only for feedback */ | |
2699 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); | |
2700 | ||
2701 | return; | |
2702 | } | |
2703 | ||
2704 | manager_flip_auto_status(m, false); | |
2705 | ||
2706 | /* Notify Type=idle units that we are done now */ | |
2707 | manager_close_idle_pipe(m); | |
2708 | ||
2709 | /* Turn off confirm spawn now */ | |
2710 | m->confirm_spawn = false; | |
2711 | ||
2712 | /* No need to update ask password status when we're going non-interactive */ | |
2713 | manager_close_ask_password(m); | |
2714 | ||
2715 | /* This is no longer the first boot */ | |
2716 | manager_set_first_boot(m, false); | |
2717 | ||
2718 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
2719 | return; | |
2720 | ||
2721 | dual_timestamp_get(&m->finish_timestamp); | |
2722 | ||
2723 | manager_notify_finished(m); | |
2724 | ||
2725 | manager_invalidate_startup_units(m); | |
2726 | } | |
2727 | ||
2728 | static int create_generator_dir(Manager *m, char **generator, const char *name) { | |
2729 | char *p; | |
2730 | int r; | |
2731 | ||
2732 | assert(m); | |
2733 | assert(generator); | |
2734 | assert(name); | |
2735 | ||
2736 | if (*generator) | |
2737 | return 0; | |
2738 | ||
2739 | if (m->running_as == MANAGER_SYSTEM && getpid() == 1) { | |
2740 | /* systemd --system, not running --test */ | |
2741 | ||
2742 | p = strappend("/run/systemd/", name); | |
2743 | if (!p) | |
2744 | return log_oom(); | |
2745 | ||
2746 | r = mkdir_p_label(p, 0755); | |
2747 | if (r < 0) { | |
2748 | log_error_errno(r, "Failed to create generator directory %s: %m", p); | |
2749 | free(p); | |
2750 | return r; | |
2751 | } | |
2752 | } else if (m->running_as == MANAGER_USER) { | |
2753 | const char *s = NULL; | |
2754 | ||
2755 | s = getenv("XDG_RUNTIME_DIR"); | |
2756 | if (!s) | |
2757 | return -EINVAL; | |
2758 | p = strjoin(s, "/systemd/", name, NULL); | |
2759 | if (!p) | |
2760 | return log_oom(); | |
2761 | ||
2762 | r = mkdir_p_label(p, 0755); | |
2763 | if (r < 0) { | |
2764 | log_error_errno(r, "Failed to create generator directory %s: %m", p); | |
2765 | free(p); | |
2766 | return r; | |
2767 | } | |
2768 | } else { | |
2769 | /* systemd --system --test */ | |
2770 | ||
2771 | p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL); | |
2772 | if (!p) | |
2773 | return log_oom(); | |
2774 | ||
2775 | if (!mkdtemp(p)) { | |
2776 | log_error_errno(errno, "Failed to create generator directory %s: %m", | |
2777 | p); | |
2778 | free(p); | |
2779 | return -errno; | |
2780 | } | |
2781 | } | |
2782 | ||
2783 | *generator = p; | |
2784 | return 0; | |
2785 | } | |
2786 | ||
2787 | static void trim_generator_dir(Manager *m, char **generator) { | |
2788 | assert(m); | |
2789 | assert(generator); | |
2790 | ||
2791 | if (!*generator) | |
2792 | return; | |
2793 | ||
2794 | if (rmdir(*generator) >= 0) | |
2795 | *generator = mfree(*generator); | |
2796 | ||
2797 | return; | |
2798 | } | |
2799 | ||
2800 | static int manager_run_generators(Manager *m) { | |
2801 | _cleanup_strv_free_ char **paths = NULL; | |
2802 | const char *argv[5]; | |
2803 | char **path; | |
2804 | int r; | |
2805 | ||
2806 | assert(m); | |
2807 | ||
2808 | if (m->test_run) | |
2809 | return 0; | |
2810 | ||
2811 | paths = generator_paths(m->running_as); | |
2812 | if (!paths) | |
2813 | return log_oom(); | |
2814 | ||
2815 | /* Optimize by skipping the whole process by not creating output directories | |
2816 | * if no generators are found. */ | |
2817 | STRV_FOREACH(path, paths) { | |
2818 | r = access(*path, F_OK); | |
2819 | if (r == 0) | |
2820 | goto found; | |
2821 | if (errno != ENOENT) | |
2822 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
2823 | } | |
2824 | return 0; | |
2825 | ||
2826 | found: | |
2827 | r = create_generator_dir(m, &m->generator_unit_path, "generator"); | |
2828 | if (r < 0) | |
2829 | goto finish; | |
2830 | ||
2831 | r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early"); | |
2832 | if (r < 0) | |
2833 | goto finish; | |
2834 | ||
2835 | r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late"); | |
2836 | if (r < 0) | |
2837 | goto finish; | |
2838 | ||
2839 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ | |
2840 | argv[1] = m->generator_unit_path; | |
2841 | argv[2] = m->generator_unit_path_early; | |
2842 | argv[3] = m->generator_unit_path_late; | |
2843 | argv[4] = NULL; | |
2844 | ||
2845 | RUN_WITH_UMASK(0022) | |
2846 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, (char**) argv); | |
2847 | ||
2848 | finish: | |
2849 | trim_generator_dir(m, &m->generator_unit_path); | |
2850 | trim_generator_dir(m, &m->generator_unit_path_early); | |
2851 | trim_generator_dir(m, &m->generator_unit_path_late); | |
2852 | return r; | |
2853 | } | |
2854 | ||
2855 | static void remove_generator_dir(Manager *m, char **generator) { | |
2856 | assert(m); | |
2857 | assert(generator); | |
2858 | ||
2859 | if (!*generator) | |
2860 | return; | |
2861 | ||
2862 | strv_remove(m->lookup_paths.unit_path, *generator); | |
2863 | (void) rm_rf(*generator, REMOVE_ROOT); | |
2864 | ||
2865 | *generator = mfree(*generator); | |
2866 | } | |
2867 | ||
2868 | static void manager_undo_generators(Manager *m) { | |
2869 | assert(m); | |
2870 | ||
2871 | remove_generator_dir(m, &m->generator_unit_path); | |
2872 | remove_generator_dir(m, &m->generator_unit_path_early); | |
2873 | remove_generator_dir(m, &m->generator_unit_path_late); | |
2874 | } | |
2875 | ||
2876 | int manager_environment_add(Manager *m, char **minus, char **plus) { | |
2877 | char **a = NULL, **b = NULL, **l; | |
2878 | assert(m); | |
2879 | ||
2880 | l = m->environment; | |
2881 | ||
2882 | if (!strv_isempty(minus)) { | |
2883 | a = strv_env_delete(l, 1, minus); | |
2884 | if (!a) | |
2885 | return -ENOMEM; | |
2886 | ||
2887 | l = a; | |
2888 | } | |
2889 | ||
2890 | if (!strv_isempty(plus)) { | |
2891 | b = strv_env_merge(2, l, plus); | |
2892 | if (!b) { | |
2893 | strv_free(a); | |
2894 | return -ENOMEM; | |
2895 | } | |
2896 | ||
2897 | l = b; | |
2898 | } | |
2899 | ||
2900 | if (m->environment != l) | |
2901 | strv_free(m->environment); | |
2902 | if (a != l) | |
2903 | strv_free(a); | |
2904 | if (b != l) | |
2905 | strv_free(b); | |
2906 | ||
2907 | m->environment = l; | |
2908 | manager_clean_environment(m); | |
2909 | strv_sort(m->environment); | |
2910 | ||
2911 | return 0; | |
2912 | } | |
2913 | ||
2914 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { | |
2915 | int i; | |
2916 | ||
2917 | assert(m); | |
2918 | ||
2919 | for (i = 0; i < _RLIMIT_MAX; i++) { | |
2920 | if (!default_rlimit[i]) | |
2921 | continue; | |
2922 | ||
2923 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); | |
2924 | if (!m->rlimit[i]) | |
2925 | return -ENOMEM; | |
2926 | } | |
2927 | ||
2928 | return 0; | |
2929 | } | |
2930 | ||
2931 | void manager_recheck_journal(Manager *m) { | |
2932 | Unit *u; | |
2933 | ||
2934 | assert(m); | |
2935 | ||
2936 | if (m->running_as != MANAGER_SYSTEM) | |
2937 | return; | |
2938 | ||
2939 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); | |
2940 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
2941 | log_close_journal(); | |
2942 | return; | |
2943 | } | |
2944 | ||
2945 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); | |
2946 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
2947 | log_close_journal(); | |
2948 | return; | |
2949 | } | |
2950 | ||
2951 | /* Hmm, OK, so the socket is fully up and the service is up | |
2952 | * too, then let's make use of the thing. */ | |
2953 | log_open(); | |
2954 | } | |
2955 | ||
2956 | void manager_set_show_status(Manager *m, ShowStatus mode) { | |
2957 | assert(m); | |
2958 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); | |
2959 | ||
2960 | if (m->running_as != MANAGER_SYSTEM) | |
2961 | return; | |
2962 | ||
2963 | m->show_status = mode; | |
2964 | ||
2965 | if (mode > 0) | |
2966 | (void) touch("/run/systemd/show-status"); | |
2967 | else | |
2968 | (void) unlink("/run/systemd/show-status"); | |
2969 | } | |
2970 | ||
2971 | static bool manager_get_show_status(Manager *m, StatusType type) { | |
2972 | assert(m); | |
2973 | ||
2974 | if (m->running_as != MANAGER_SYSTEM) | |
2975 | return false; | |
2976 | ||
2977 | if (m->no_console_output) | |
2978 | return false; | |
2979 | ||
2980 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) | |
2981 | return false; | |
2982 | ||
2983 | /* If we cannot find out the status properly, just proceed. */ | |
2984 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) | |
2985 | return false; | |
2986 | ||
2987 | if (m->show_status > 0) | |
2988 | return true; | |
2989 | ||
2990 | return false; | |
2991 | } | |
2992 | ||
2993 | void manager_set_first_boot(Manager *m, bool b) { | |
2994 | assert(m); | |
2995 | ||
2996 | if (m->running_as != MANAGER_SYSTEM) | |
2997 | return; | |
2998 | ||
2999 | if (m->first_boot != (int) b) { | |
3000 | if (b) | |
3001 | (void) touch("/run/systemd/first-boot"); | |
3002 | else | |
3003 | (void) unlink("/run/systemd/first-boot"); | |
3004 | } | |
3005 | ||
3006 | m->first_boot = b; | |
3007 | } | |
3008 | ||
3009 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { | |
3010 | va_list ap; | |
3011 | ||
3012 | /* If m is NULL, assume we're after shutdown and let the messages through. */ | |
3013 | ||
3014 | if (m && !manager_get_show_status(m, type)) | |
3015 | return; | |
3016 | ||
3017 | /* XXX We should totally drop the check for ephemeral here | |
3018 | * and thus effectively make 'Type=idle' pointless. */ | |
3019 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) | |
3020 | return; | |
3021 | ||
3022 | va_start(ap, format); | |
3023 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); | |
3024 | va_end(ap); | |
3025 | } | |
3026 | ||
3027 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { | |
3028 | char p[strlen(path)+1]; | |
3029 | ||
3030 | assert(m); | |
3031 | assert(path); | |
3032 | ||
3033 | strcpy(p, path); | |
3034 | path_kill_slashes(p); | |
3035 | ||
3036 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3037 | } | |
3038 | ||
3039 | const char *manager_get_runtime_prefix(Manager *m) { | |
3040 | assert(m); | |
3041 | ||
3042 | return m->running_as == MANAGER_SYSTEM ? | |
3043 | "/run" : | |
3044 | getenv("XDG_RUNTIME_DIR"); | |
3045 | } | |
3046 | ||
3047 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { | |
3048 | unsigned size; | |
3049 | int r; | |
3050 | ||
3051 | assert(m); | |
3052 | assert(u->manager == m); | |
3053 | ||
3054 | size = set_size(m->failed_units); | |
3055 | ||
3056 | if (failed) { | |
3057 | r = set_ensure_allocated(&m->failed_units, NULL); | |
3058 | if (r < 0) | |
3059 | return log_oom(); | |
3060 | ||
3061 | if (set_put(m->failed_units, u) < 0) | |
3062 | return log_oom(); | |
3063 | } else | |
3064 | (void) set_remove(m->failed_units, u); | |
3065 | ||
3066 | if (set_size(m->failed_units) != size) | |
3067 | bus_manager_send_change_signal(m); | |
3068 | ||
3069 | return 0; | |
3070 | } | |
3071 | ||
3072 | ManagerState manager_state(Manager *m) { | |
3073 | Unit *u; | |
3074 | ||
3075 | assert(m); | |
3076 | ||
3077 | /* Did we ever finish booting? If not then we are still starting up */ | |
3078 | if (!dual_timestamp_is_set(&m->finish_timestamp)) { | |
3079 | ||
3080 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3081 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3082 | return MANAGER_INITIALIZING; | |
3083 | ||
3084 | return MANAGER_STARTING; | |
3085 | } | |
3086 | ||
3087 | /* Is the special shutdown target queued? If so, we are in shutdown state */ | |
3088 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
3089 | if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START)) | |
3090 | return MANAGER_STOPPING; | |
3091 | ||
3092 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3093 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3094 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
3095 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START)))) | |
3096 | return MANAGER_MAINTENANCE; | |
3097 | ||
3098 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); | |
3099 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
3100 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_TRY_RESTART, JOB_RELOAD_OR_START)))) | |
3101 | return MANAGER_MAINTENANCE; | |
3102 | ||
3103 | /* Are there any failed units? If so, we are in degraded mode */ | |
3104 | if (set_size(m->failed_units) > 0) | |
3105 | return MANAGER_DEGRADED; | |
3106 | ||
3107 | return MANAGER_RUNNING; | |
3108 | } | |
3109 | ||
3110 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { | |
3111 | [MANAGER_INITIALIZING] = "initializing", | |
3112 | [MANAGER_STARTING] = "starting", | |
3113 | [MANAGER_RUNNING] = "running", | |
3114 | [MANAGER_DEGRADED] = "degraded", | |
3115 | [MANAGER_MAINTENANCE] = "maintenance", | |
3116 | [MANAGER_STOPPING] = "stopping", | |
3117 | }; | |
3118 | ||
3119 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); |