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Commit | Line | Data |
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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
60918275 | 20 | #include <errno.h> |
400f1a33 LP |
21 | #include <fcntl.h> |
22 | #include <linux/kd.h> | |
9152c765 | 23 | #include <signal.h> |
400f1a33 | 24 | #include <string.h> |
e46b13c8 | 25 | #include <sys/epoll.h> |
400f1a33 | 26 | #include <sys/inotify.h> |
e1414003 | 27 | #include <sys/ioctl.h> |
400f1a33 | 28 | #include <sys/reboot.h> |
8742514c | 29 | #include <sys/timerfd.h> |
400f1a33 LP |
30 | #include <sys/wait.h> |
31 | #include <unistd.h> | |
830f6caa LP |
32 | |
33 | #ifdef HAVE_AUDIT | |
4927fcae | 34 | #include <libaudit.h> |
830f6caa | 35 | #endif |
60918275 | 36 | |
718db961 | 37 | #include "sd-daemon.h" |
718db961 | 38 | #include "sd-messages.h" |
3536f49e | 39 | #include "sd-path.h" |
81527be1 | 40 | |
b5efdb8a | 41 | #include "alloc-util.h" |
400f1a33 LP |
42 | #include "audit-fd.h" |
43 | #include "boot-timestamps.h" | |
44 | #include "bus-common-errors.h" | |
45 | #include "bus-error.h" | |
46 | #include "bus-kernel.h" | |
47 | #include "bus-util.h" | |
00d9ef85 | 48 | #include "clean-ipc.h" |
400f1a33 LP |
49 | #include "dbus-job.h" |
50 | #include "dbus-manager.h" | |
51 | #include "dbus-unit.h" | |
52 | #include "dbus.h" | |
d063a527 | 53 | #include "dirent-util.h" |
400f1a33 | 54 | #include "env-util.h" |
4f5dd394 | 55 | #include "escape.h" |
3536f49e | 56 | #include "execute.h" |
89711996 | 57 | #include "exec-util.h" |
400f1a33 | 58 | #include "exit-status.h" |
3ffd4af2 | 59 | #include "fd-util.h" |
0d39fa9c | 60 | #include "fileio.h" |
f4f15635 | 61 | #include "fs-util.h" |
60918275 | 62 | #include "hashmap.h" |
c004493c | 63 | #include "io-util.h" |
400f1a33 | 64 | #include "locale-setup.h" |
16354eff | 65 | #include "log.h" |
400f1a33 | 66 | #include "macro.h" |
3ffd4af2 | 67 | #include "manager.h" |
400f1a33 | 68 | #include "missing.h" |
49e942b2 | 69 | #include "mkdir.h" |
6bedfcbb | 70 | #include "parse-util.h" |
400f1a33 LP |
71 | #include "path-lookup.h" |
72 | #include "path-util.h" | |
73 | #include "process-util.h" | |
ea430986 | 74 | #include "ratelimit.h" |
c6878637 | 75 | #include "rm-rf.h" |
400f1a33 | 76 | #include "signal-util.h" |
514f4ef5 | 77 | #include "special.h" |
8fcde012 | 78 | #include "stat-util.h" |
8b43440b | 79 | #include "string-table.h" |
07630cea | 80 | #include "string-util.h" |
400f1a33 LP |
81 | #include "strv.h" |
82 | #include "terminal-util.h" | |
83 | #include "time-util.h" | |
84 | #include "transaction.h" | |
affb60b1 | 85 | #include "umask-util.h" |
400f1a33 | 86 | #include "unit-name.h" |
00d9ef85 | 87 | #include "user-util.h" |
400f1a33 | 88 | #include "util.h" |
5dc4c17f | 89 | #include "virt.h" |
e96d6be7 | 90 | #include "watchdog.h" |
60918275 | 91 | |
a47806fa | 92 | #define NOTIFY_RCVBUF_SIZE (8*1024*1024) |
d8fdc620 | 93 | #define CGROUPS_AGENT_RCVBUF_SIZE (8*1024*1024) |
a47806fa | 94 | |
03b717a3 | 95 | /* Initial delay and the interval for printing status messages about running jobs */ |
fd08a840 ZJS |
96 | #define JOBS_IN_PROGRESS_WAIT_USEC (5*USEC_PER_SEC) |
97 | #define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3) | |
03b717a3 MS |
98 | #define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3 |
99 | ||
718db961 | 100 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
d8fdc620 | 101 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 LP |
102 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
103 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
104 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
00d9ef85 | 105 | static int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
718db961 | 106 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata); |
752b5905 | 107 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata); |
64691d20 | 108 | static int manager_run_environment_generators(Manager *m); |
e801700e | 109 | static int manager_run_generators(Manager *m); |
718db961 | 110 | |
2ae56591 | 111 | static void manager_watch_jobs_in_progress(Manager *m) { |
e5723c89 | 112 | usec_t next; |
cfa9677b | 113 | int r; |
e5723c89 | 114 | |
718db961 | 115 | assert(m); |
03b717a3 | 116 | |
42bf1ae1 FB |
117 | /* We do not want to show the cylon animation if the user |
118 | * needs to confirm service executions otherwise confirmation | |
119 | * messages will be screwed by the cylon animation. */ | |
b0eb2944 | 120 | if (!manager_is_confirm_spawn_disabled(m)) |
42bf1ae1 FB |
121 | return; |
122 | ||
718db961 | 123 | if (m->jobs_in_progress_event_source) |
2ae56591 | 124 | return; |
03b717a3 | 125 | |
e5723c89 | 126 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC; |
cfa9677b | 127 | r = sd_event_add_time( |
6a0f1f6d LP |
128 | m->event, |
129 | &m->jobs_in_progress_event_source, | |
130 | CLOCK_MONOTONIC, | |
131 | next, 0, | |
132 | manager_dispatch_jobs_in_progress, m); | |
cfa9677b MM |
133 | if (r < 0) |
134 | return; | |
7dfbe2e3 TG |
135 | |
136 | (void) sd_event_source_set_description(m->jobs_in_progress_event_source, "manager-jobs-in-progress"); | |
03b717a3 MS |
137 | } |
138 | ||
1fc464f6 | 139 | #define CYLON_BUFFER_EXTRA (2*(sizeof(ANSI_RED)-1) + sizeof(ANSI_HIGHLIGHT_RED)-1 + 2*(sizeof(ANSI_NORMAL)-1)) |
03b717a3 | 140 | |
03b717a3 MS |
141 | static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) { |
142 | char *p = buffer; | |
143 | ||
144 | assert(buflen >= CYLON_BUFFER_EXTRA + width + 1); | |
145 | assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */ | |
146 | ||
147 | if (pos > 1) { | |
6282c859 MS |
148 | if (pos > 2) |
149 | p = mempset(p, ' ', pos-2); | |
64c3610b FB |
150 | if (log_get_show_color()) |
151 | p = stpcpy(p, ANSI_RED); | |
03b717a3 MS |
152 | *p++ = '*'; |
153 | } | |
154 | ||
155 | if (pos > 0 && pos <= width) { | |
64c3610b FB |
156 | if (log_get_show_color()) |
157 | p = stpcpy(p, ANSI_HIGHLIGHT_RED); | |
03b717a3 MS |
158 | *p++ = '*'; |
159 | } | |
160 | ||
64c3610b FB |
161 | if (log_get_show_color()) |
162 | p = stpcpy(p, ANSI_NORMAL); | |
03b717a3 MS |
163 | |
164 | if (pos < width) { | |
64c3610b FB |
165 | if (log_get_show_color()) |
166 | p = stpcpy(p, ANSI_RED); | |
03b717a3 | 167 | *p++ = '*'; |
6282c859 MS |
168 | if (pos < width-1) |
169 | p = mempset(p, ' ', width-1-pos); | |
64c3610b FB |
170 | if (log_get_show_color()) |
171 | strcpy(p, ANSI_NORMAL); | |
03b717a3 | 172 | } |
03b717a3 MS |
173 | } |
174 | ||
cb8ccb22 | 175 | void manager_flip_auto_status(Manager *m, bool enable) { |
f755e3b7 LP |
176 | assert(m); |
177 | ||
cb8ccb22 ZJS |
178 | if (enable) { |
179 | if (m->show_status == SHOW_STATUS_AUTO) | |
180 | manager_set_show_status(m, SHOW_STATUS_TEMPORARY); | |
181 | } else { | |
182 | if (m->show_status == SHOW_STATUS_TEMPORARY) | |
183 | manager_set_show_status(m, SHOW_STATUS_AUTO); | |
184 | } | |
185 | } | |
186 | ||
03b717a3 | 187 | static void manager_print_jobs_in_progress(Manager *m) { |
718db961 | 188 | _cleanup_free_ char *job_of_n = NULL; |
03b717a3 MS |
189 | Iterator i; |
190 | Job *j; | |
03b717a3 MS |
191 | unsigned counter = 0, print_nr; |
192 | char cylon[6 + CYLON_BUFFER_EXTRA + 1]; | |
193 | unsigned cylon_pos; | |
8bb310c3 ZJS |
194 | char time[FORMAT_TIMESPAN_MAX], limit[FORMAT_TIMESPAN_MAX] = "no limit"; |
195 | uint64_t x; | |
03b717a3 | 196 | |
718db961 | 197 | assert(m); |
9c3349e2 | 198 | assert(m->n_running_jobs > 0); |
718db961 | 199 | |
cb8ccb22 | 200 | manager_flip_auto_status(m, true); |
d450b6f2 | 201 | |
03b717a3 MS |
202 | print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs; |
203 | ||
204 | HASHMAP_FOREACH(j, m->jobs, i) | |
205 | if (j->state == JOB_RUNNING && counter++ == print_nr) | |
206 | break; | |
207 | ||
e970a72e MS |
208 | /* m->n_running_jobs must be consistent with the contents of m->jobs, |
209 | * so the above loop must have succeeded in finding j. */ | |
210 | assert(counter == print_nr + 1); | |
51d122af | 211 | assert(j); |
5a82a91a | 212 | |
03b717a3 MS |
213 | cylon_pos = m->jobs_in_progress_iteration % 14; |
214 | if (cylon_pos >= 8) | |
215 | cylon_pos = 14 - cylon_pos; | |
216 | draw_cylon(cylon, sizeof(cylon), 6, cylon_pos); | |
217 | ||
8bb310c3 ZJS |
218 | m->jobs_in_progress_iteration++; |
219 | ||
d6483ba7 ZJS |
220 | if (m->n_running_jobs > 1) { |
221 | if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0) | |
222 | job_of_n = NULL; | |
223 | } | |
03b717a3 | 224 | |
8bb310c3 ZJS |
225 | format_timespan(time, sizeof(time), now(CLOCK_MONOTONIC) - j->begin_usec, 1*USEC_PER_SEC); |
226 | if (job_get_timeout(j, &x) > 0) | |
227 | format_timespan(limit, sizeof(limit), x - j->begin_usec, 1*USEC_PER_SEC); | |
228 | ||
127d5fd1 | 229 | manager_status_printf(m, STATUS_TYPE_EPHEMERAL, cylon, |
8bb310c3 ZJS |
230 | "%sA %s job is running for %s (%s / %s)", |
231 | strempty(job_of_n), | |
232 | job_type_to_string(j->type), | |
233 | unit_description(j->unit), | |
234 | time, limit); | |
03b717a3 MS |
235 | } |
236 | ||
e46b13c8 ZJS |
237 | static int have_ask_password(void) { |
238 | _cleanup_closedir_ DIR *dir; | |
8fb3f009 | 239 | struct dirent *de; |
e46b13c8 ZJS |
240 | |
241 | dir = opendir("/run/systemd/ask-password"); | |
242 | if (!dir) { | |
243 | if (errno == ENOENT) | |
244 | return false; | |
245 | else | |
246 | return -errno; | |
247 | } | |
248 | ||
8fb3f009 | 249 | FOREACH_DIRENT_ALL(de, dir, return -errno) { |
e46b13c8 ZJS |
250 | if (startswith(de->d_name, "ask.")) |
251 | return true; | |
252 | } | |
8fb3f009 | 253 | return false; |
e46b13c8 ZJS |
254 | } |
255 | ||
256 | static int manager_dispatch_ask_password_fd(sd_event_source *source, | |
257 | int fd, uint32_t revents, void *userdata) { | |
258 | Manager *m = userdata; | |
259 | ||
260 | assert(m); | |
261 | ||
262 | flush_fd(fd); | |
263 | ||
264 | m->have_ask_password = have_ask_password(); | |
265 | if (m->have_ask_password < 0) | |
266 | /* Log error but continue. Negative have_ask_password | |
267 | * is treated as unknown status. */ | |
c33b3297 | 268 | log_error_errno(m->have_ask_password, "Failed to list /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
269 | |
270 | return 0; | |
271 | } | |
272 | ||
273 | static void manager_close_ask_password(Manager *m) { | |
274 | assert(m); | |
275 | ||
e46b13c8 | 276 | m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source); |
90990e28 | 277 | m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd); |
e46b13c8 ZJS |
278 | m->have_ask_password = -EINVAL; |
279 | } | |
280 | ||
281 | static int manager_check_ask_password(Manager *m) { | |
282 | int r; | |
283 | ||
284 | assert(m); | |
285 | ||
286 | if (!m->ask_password_event_source) { | |
287 | assert(m->ask_password_inotify_fd < 0); | |
288 | ||
289 | mkdir_p_label("/run/systemd/ask-password", 0755); | |
290 | ||
291 | m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); | |
4a62c710 MS |
292 | if (m->ask_password_inotify_fd < 0) |
293 | return log_error_errno(errno, "inotify_init1() failed: %m"); | |
e46b13c8 ZJS |
294 | |
295 | if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) { | |
56f64d95 | 296 | log_error_errno(errno, "Failed to add watch on /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
297 | manager_close_ask_password(m); |
298 | return -errno; | |
299 | } | |
300 | ||
301 | r = sd_event_add_io(m->event, &m->ask_password_event_source, | |
302 | m->ask_password_inotify_fd, EPOLLIN, | |
303 | manager_dispatch_ask_password_fd, m); | |
304 | if (r < 0) { | |
56f64d95 | 305 | log_error_errno(errno, "Failed to add event source for /run/systemd/ask-password: %m"); |
e46b13c8 ZJS |
306 | manager_close_ask_password(m); |
307 | return -errno; | |
308 | } | |
309 | ||
7dfbe2e3 TG |
310 | (void) sd_event_source_set_description(m->ask_password_event_source, "manager-ask-password"); |
311 | ||
e46b13c8 ZJS |
312 | /* Queries might have been added meanwhile... */ |
313 | manager_dispatch_ask_password_fd(m->ask_password_event_source, | |
314 | m->ask_password_inotify_fd, EPOLLIN, m); | |
315 | } | |
316 | ||
317 | return m->have_ask_password; | |
318 | } | |
319 | ||
31a7eb86 | 320 | static int manager_watch_idle_pipe(Manager *m) { |
31a7eb86 ZJS |
321 | int r; |
322 | ||
718db961 LP |
323 | assert(m); |
324 | ||
325 | if (m->idle_pipe_event_source) | |
31a7eb86 ZJS |
326 | return 0; |
327 | ||
328 | if (m->idle_pipe[2] < 0) | |
329 | return 0; | |
330 | ||
151b9b96 | 331 | r = sd_event_add_io(m->event, &m->idle_pipe_event_source, m->idle_pipe[2], EPOLLIN, manager_dispatch_idle_pipe_fd, m); |
23bbb0de MS |
332 | if (r < 0) |
333 | return log_error_errno(r, "Failed to watch idle pipe: %m"); | |
31a7eb86 | 334 | |
7dfbe2e3 TG |
335 | (void) sd_event_source_set_description(m->idle_pipe_event_source, "manager-idle-pipe"); |
336 | ||
31a7eb86 | 337 | return 0; |
31a7eb86 ZJS |
338 | } |
339 | ||
718db961 LP |
340 | static void manager_close_idle_pipe(Manager *m) { |
341 | assert(m); | |
31a7eb86 | 342 | |
cd72bd8a LP |
343 | m->idle_pipe_event_source = sd_event_source_unref(m->idle_pipe_event_source); |
344 | ||
3d94f76c LP |
345 | safe_close_pair(m->idle_pipe); |
346 | safe_close_pair(m->idle_pipe + 2); | |
31a7eb86 ZJS |
347 | } |
348 | ||
8742514c | 349 | static int manager_setup_time_change(Manager *m) { |
718db961 | 350 | int r; |
b92bea5d ZJS |
351 | |
352 | /* We only care for the cancellation event, hence we set the | |
353 | * timeout to the latest possible value. */ | |
354 | struct itimerspec its = { | |
355 | .it_value.tv_sec = TIME_T_MAX, | |
356 | }; | |
8742514c | 357 | |
718db961 LP |
358 | assert(m); |
359 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); | |
8742514c | 360 | |
e0a3da1f | 361 | if (m->test_run_flags) |
0d8c31ff ZJS |
362 | return 0; |
363 | ||
8742514c LP |
364 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever |
365 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
366 | ||
718db961 | 367 | m->time_change_fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); |
4a62c710 MS |
368 | if (m->time_change_fd < 0) |
369 | return log_error_errno(errno, "Failed to create timerfd: %m"); | |
8742514c | 370 | |
718db961 | 371 | if (timerfd_settime(m->time_change_fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
56f64d95 | 372 | log_debug_errno(errno, "Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); |
03e334a1 | 373 | m->time_change_fd = safe_close(m->time_change_fd); |
8742514c LP |
374 | return 0; |
375 | } | |
376 | ||
151b9b96 | 377 | r = sd_event_add_io(m->event, &m->time_change_event_source, m->time_change_fd, EPOLLIN, manager_dispatch_time_change_fd, m); |
23bbb0de MS |
378 | if (r < 0) |
379 | return log_error_errno(r, "Failed to create time change event source: %m"); | |
8742514c | 380 | |
7dfbe2e3 TG |
381 | (void) sd_event_source_set_description(m->time_change_event_source, "manager-time-change"); |
382 | ||
8742514c LP |
383 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
80876c20 | 388 | static int enable_special_signals(Manager *m) { |
718db961 | 389 | _cleanup_close_ int fd = -1; |
80876c20 LP |
390 | |
391 | assert(m); | |
392 | ||
e0a3da1f | 393 | if (m->test_run_flags) |
37453b3a EV |
394 | return 0; |
395 | ||
a41b539e | 396 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
397 | * this will fail with EPERM (older) or EINVAL (newer), so |
398 | * ignore that. */ | |
399 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL) | |
56f64d95 | 400 | log_warning_errno(errno, "Failed to enable ctrl-alt-del handling: %m"); |
80876c20 | 401 | |
a41b539e LP |
402 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
403 | if (fd < 0) { | |
404 | /* Support systems without virtual console */ | |
405 | if (fd != -ENOENT) | |
56f64d95 | 406 | log_warning_errno(errno, "Failed to open /dev/tty0: %m"); |
a41b539e | 407 | } else { |
80876c20 LP |
408 | /* Enable that we get SIGWINCH on kbrequest */ |
409 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
56f64d95 | 410 | log_warning_errno(errno, "Failed to enable kbrequest handling: %m"); |
80876c20 LP |
411 | } |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
ce578209 | 416 | static int manager_setup_signals(Manager *m) { |
b92bea5d ZJS |
417 | struct sigaction sa = { |
418 | .sa_handler = SIG_DFL, | |
419 | .sa_flags = SA_NOCLDSTOP|SA_RESTART, | |
420 | }; | |
718db961 LP |
421 | sigset_t mask; |
422 | int r; | |
60918275 | 423 | |
ce578209 LP |
424 | assert(m); |
425 | ||
57c0c30e LP |
426 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); |
427 | ||
4dffec14 LP |
428 | /* We make liberal use of realtime signals here. On |
429 | * Linux/glibc we have 30 of them (with the exception of Linux | |
430 | * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30 | |
431 | * (aka SIGRTMAX). */ | |
7d793605 | 432 | |
4dffec14 | 433 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
434 | sigset_add_many(&mask, |
435 | SIGCHLD, /* Child died */ | |
436 | SIGTERM, /* Reexecute daemon */ | |
437 | SIGHUP, /* Reload configuration */ | |
438 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
439 | SIGUSR2, /* systemd: dump status */ | |
440 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
441 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
442 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
4dffec14 | 443 | |
7d793605 | 444 | SIGRTMIN+0, /* systemd: start default.target */ |
0003d1ab | 445 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
446 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
447 | SIGRTMIN+3, /* systemd: start halt.target */ | |
448 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
449 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab | 450 | SIGRTMIN+6, /* systemd: start kexec.target */ |
4dffec14 LP |
451 | |
452 | /* ... space for more special targets ... */ | |
453 | ||
0003d1ab LP |
454 | SIGRTMIN+13, /* systemd: Immediate halt */ |
455 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
456 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
457 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
4dffec14 LP |
458 | |
459 | /* ... space for more immediate system state changes ... */ | |
460 | ||
0658666b LP |
461 | SIGRTMIN+20, /* systemd: enable status messages */ |
462 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
463 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
464 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 465 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4dffec14 LP |
466 | |
467 | /* .. one free signal here ... */ | |
468 | ||
469 | #if !defined(__hppa64__) && !defined(__hppa__) | |
470 | /* Apparently Linux on hppa has fewer RT | |
471 | * signals (SIGRTMAX is SIGRTMIN+25 there), | |
472 | * hence let's not try to make use of them | |
473 | * here. Since these commands are accessible | |
474 | * by different means and only really a safety | |
475 | * net, the missing functionality on hppa | |
476 | * shouldn't matter. */ | |
477 | ||
4cfa2c99 | 478 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
479 | SIGRTMIN+27, /* systemd: set log target to console */ |
480 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
ee33e53a | 481 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete) */ |
4dffec14 LP |
482 | |
483 | /* ... one free signal here SIGRTMIN+30 ... */ | |
484 | #endif | |
7d793605 | 485 | -1); |
ce578209 LP |
486 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
487 | ||
718db961 LP |
488 | m->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
489 | if (m->signal_fd < 0) | |
ce578209 LP |
490 | return -errno; |
491 | ||
151b9b96 | 492 | r = sd_event_add_io(m->event, &m->signal_event_source, m->signal_fd, EPOLLIN, manager_dispatch_signal_fd, m); |
718db961 LP |
493 | if (r < 0) |
494 | return r; | |
ce578209 | 495 | |
7dfbe2e3 TG |
496 | (void) sd_event_source_set_description(m->signal_event_source, "manager-signal"); |
497 | ||
d8fdc620 LP |
498 | /* Process signals a bit earlier than the rest of things, but later than notify_fd processing, so that the |
499 | * notify processing can still figure out to which process/service a message belongs, before we reap the | |
500 | * process. Also, process this before handling cgroup notifications, so that we always collect child exit | |
501 | * status information before detecting that there's no process in a cgroup. */ | |
502 | r = sd_event_source_set_priority(m->signal_event_source, SD_EVENT_PRIORITY_NORMAL-6); | |
29083707 LP |
503 | if (r < 0) |
504 | return r; | |
505 | ||
463d0d15 | 506 | if (MANAGER_IS_SYSTEM(m)) |
80876c20 | 507 | return enable_special_signals(m); |
e1414003 | 508 | |
ce578209 LP |
509 | return 0; |
510 | } | |
511 | ||
f069efb4 LP |
512 | static void manager_clean_environment(Manager *m) { |
513 | assert(m); | |
514 | ||
515 | /* Let's remove some environment variables that we | |
516 | * need ourselves to communicate with our clients */ | |
517 | strv_env_unset_many( | |
518 | m->environment, | |
519 | "NOTIFY_SOCKET", | |
520 | "MAINPID", | |
521 | "MANAGERPID", | |
522 | "LISTEN_PID", | |
523 | "LISTEN_FDS", | |
8dd4c05b | 524 | "LISTEN_FDNAMES", |
f069efb4 LP |
525 | "WATCHDOG_PID", |
526 | "WATCHDOG_USEC", | |
4b58153d | 527 | "INVOCATION_ID", |
f069efb4 LP |
528 | NULL); |
529 | } | |
530 | ||
e21fea24 | 531 | static int manager_default_environment(Manager *m) { |
71ecc858 LP |
532 | assert(m); |
533 | ||
463d0d15 | 534 | if (MANAGER_IS_SYSTEM(m)) { |
e21fea24 KS |
535 | /* The system manager always starts with a clean |
536 | * environment for its children. It does not import | |
71cb7d30 | 537 | * the kernel's or the parents' exported variables. |
e21fea24 | 538 | * |
71cb7d30 | 539 | * The initial passed environment is untouched to keep |
e21fea24 KS |
540 | * /proc/self/environ valid; it is used for tagging |
541 | * the init process inside containers. */ | |
43638332 ZJS |
542 | m->environment = strv_new("PATH=" DEFAULT_PATH, |
543 | NULL); | |
e21fea24 KS |
544 | |
545 | /* Import locale variables LC_*= from configuration */ | |
546 | locale_setup(&m->environment); | |
71cb7d30 | 547 | } else |
e21fea24 KS |
548 | /* The user manager passes its own environment |
549 | * along to its children. */ | |
550 | m->environment = strv_copy(environ); | |
43d03a83 | 551 | |
e21fea24 KS |
552 | if (!m->environment) |
553 | return -ENOMEM; | |
8b55b8c4 | 554 | |
f069efb4 | 555 | manager_clean_environment(m); |
9d5a3757 LP |
556 | strv_sort(m->environment); |
557 | ||
e21fea24 | 558 | return 0; |
71ecc858 LP |
559 | } |
560 | ||
3536f49e YW |
561 | static int manager_setup_prefix(Manager *m) { |
562 | struct table_entry { | |
563 | uint64_t type; | |
564 | const char *suffix; | |
565 | }; | |
566 | ||
567 | static const struct table_entry paths_system[_EXEC_DIRECTORY_MAX] = { | |
568 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_SYSTEM_RUNTIME, NULL }, | |
569 | [EXEC_DIRECTORY_STATE] = { SD_PATH_SYSTEM_STATE_PRIVATE, NULL }, | |
570 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
571 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_STATE_LOGS, NULL }, | |
572 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, | |
573 | }; | |
574 | ||
575 | static const struct table_entry paths_user[_EXEC_DIRECTORY_MAX] = { | |
576 | [EXEC_DIRECTORY_RUNTIME] = { SD_PATH_USER_RUNTIME, NULL }, | |
577 | [EXEC_DIRECTORY_STATE] = { SD_PATH_USER_CONFIGURATION, NULL }, | |
578 | [EXEC_DIRECTORY_CACHE] = { SD_PATH_SYSTEM_STATE_CACHE, NULL }, | |
579 | [EXEC_DIRECTORY_LOGS] = { SD_PATH_SYSTEM_CONFIGURATION, "log" }, | |
580 | [EXEC_DIRECTORY_CONFIGURATION] = { SD_PATH_SYSTEM_CONFIGURATION, NULL }, | |
581 | }; | |
582 | ||
583 | const struct table_entry *p; | |
584 | ExecDirectoryType i; | |
585 | int r; | |
586 | ||
587 | assert(m); | |
588 | ||
589 | if (MANAGER_IS_SYSTEM(m)) | |
590 | p = paths_system; | |
591 | else | |
592 | p = paths_user; | |
593 | ||
594 | for (i = 0; i < _EXEC_DIRECTORY_MAX; i++) { | |
595 | r = sd_path_home(p[i].type, p[i].suffix, &m->prefix[i]); | |
596 | if (r < 0) | |
597 | return r; | |
598 | } | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
e0a3da1f | 603 | int manager_new(UnitFileScope scope, unsigned test_run_flags, Manager **_m) { |
ce578209 | 604 | Manager *m; |
e3dd987c | 605 | int r; |
8e274523 LP |
606 | |
607 | assert(_m); | |
463d0d15 | 608 | assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER)); |
ce578209 | 609 | |
915b3753 LP |
610 | m = new0(Manager, 1); |
611 | if (!m) | |
8e274523 | 612 | return -ENOMEM; |
60918275 | 613 | |
463d0d15 | 614 | m->unit_file_scope = scope; |
a16e1123 | 615 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
bd8f585b | 616 | m->default_timer_accuracy_usec = USEC_PER_MINUTE; |
9ded9cd1 | 617 | m->default_tasks_accounting = true; |
79baeeb9 | 618 | m->default_tasks_max = UINT64_MAX; |
bd389aa7 LP |
619 | m->default_timeout_start_usec = DEFAULT_TIMEOUT_USEC; |
620 | m->default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC; | |
621 | m->default_restart_usec = DEFAULT_RESTART_USEC; | |
80876c20 | 622 | |
463d0d15 LP |
623 | #ifdef ENABLE_EFI |
624 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) | |
625 | boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); | |
626 | #endif | |
627 | ||
f2341e0a | 628 | /* Prepare log fields we can use for structured logging */ |
463d0d15 LP |
629 | if (MANAGER_IS_SYSTEM(m)) { |
630 | m->unit_log_field = "UNIT="; | |
631 | m->unit_log_format_string = "UNIT=%s"; | |
4b58153d LP |
632 | |
633 | m->invocation_log_field = "INVOCATION_ID="; | |
f1c50bec | 634 | m->invocation_log_format_string = "INVOCATION_ID=%s"; |
463d0d15 LP |
635 | } else { |
636 | m->unit_log_field = "USER_UNIT="; | |
637 | m->unit_log_format_string = "USER_UNIT=%s"; | |
4b58153d LP |
638 | |
639 | m->invocation_log_field = "USER_INVOCATION_ID="; | |
f1c50bec | 640 | m->invocation_log_format_string = "USER_INVOCATION_ID=%s"; |
463d0d15 | 641 | } |
f2341e0a | 642 | |
718db961 | 643 | m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1; |
8742514c | 644 | |
d8fdc620 | 645 | m->pin_cgroupfs_fd = m->notify_fd = m->cgroups_agent_fd = m->signal_fd = m->time_change_fd = |
232f6754 | 646 | m->dev_autofs_fd = m->private_listen_fd = m->cgroup_inotify_fd = |
d8fdc620 | 647 | m->ask_password_inotify_fd = -1; |
d379d442 | 648 | |
00d9ef85 LP |
649 | m->user_lookup_fds[0] = m->user_lookup_fds[1] = -1; |
650 | ||
ea430986 | 651 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 652 | |
e46b13c8 | 653 | m->have_ask_password = -EINVAL; /* we don't know */ |
ae2a2c53 | 654 | m->first_boot = -1; |
e46b13c8 | 655 | |
e0a3da1f | 656 | m->test_run_flags = test_run_flags; |
0d8c31ff | 657 | |
2e5c94b9 LP |
658 | /* Reboot immediately if the user hits C-A-D more often than 7x per 2s */ |
659 | RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7); | |
660 | ||
e21fea24 KS |
661 | r = manager_default_environment(m); |
662 | if (r < 0) | |
1137a57c LP |
663 | goto fail; |
664 | ||
d5099efc | 665 | r = hashmap_ensure_allocated(&m->units, &string_hash_ops); |
718db961 | 666 | if (r < 0) |
60918275 LP |
667 | goto fail; |
668 | ||
d5099efc | 669 | r = hashmap_ensure_allocated(&m->jobs, NULL); |
718db961 | 670 | if (r < 0) |
60918275 LP |
671 | goto fail; |
672 | ||
d5099efc | 673 | r = hashmap_ensure_allocated(&m->cgroup_unit, &string_hash_ops); |
718db961 | 674 | if (r < 0) |
9152c765 LP |
675 | goto fail; |
676 | ||
d5099efc | 677 | r = hashmap_ensure_allocated(&m->watch_bus, &string_hash_ops); |
718db961 | 678 | if (r < 0) |
05e343b7 LP |
679 | goto fail; |
680 | ||
718db961 LP |
681 | r = sd_event_default(&m->event); |
682 | if (r < 0) | |
8742514c LP |
683 | goto fail; |
684 | ||
151b9b96 | 685 | r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m); |
752b5905 LP |
686 | if (r < 0) |
687 | goto fail; | |
688 | ||
689 | r = sd_event_source_set_priority(m->run_queue_event_source, SD_EVENT_PRIORITY_IDLE); | |
690 | if (r < 0) | |
691 | goto fail; | |
692 | ||
693 | r = sd_event_source_set_enabled(m->run_queue_event_source, SD_EVENT_OFF); | |
694 | if (r < 0) | |
695 | goto fail; | |
696 | ||
7dfbe2e3 TG |
697 | (void) sd_event_source_set_description(m->run_queue_event_source, "manager-run-queue"); |
698 | ||
8742514c LP |
699 | r = manager_setup_signals(m); |
700 | if (r < 0) | |
9152c765 LP |
701 | goto fail; |
702 | ||
8742514c LP |
703 | r = manager_setup_cgroup(m); |
704 | if (r < 0) | |
8e274523 LP |
705 | goto fail; |
706 | ||
8742514c LP |
707 | r = manager_setup_time_change(m); |
708 | if (r < 0) | |
8c47c732 LP |
709 | goto fail; |
710 | ||
9670d583 LP |
711 | m->udev = udev_new(); |
712 | if (!m->udev) { | |
713 | r = -ENOMEM; | |
714 | goto fail; | |
715 | } | |
716 | ||
232f6754 ZJS |
717 | /* Note that we do not set up the notify fd here. We do that after deserialization, |
718 | * since they might have gotten serialized across the reexec. */ | |
d86f9d52 | 719 | |
72bc8d00 LP |
720 | m->taint_usr = dir_is_empty("/usr") > 0; |
721 | ||
3536f49e YW |
722 | r = manager_setup_prefix(m); |
723 | if (r < 0) | |
724 | goto fail; | |
725 | ||
8e274523 LP |
726 | *_m = m; |
727 | return 0; | |
60918275 LP |
728 | |
729 | fail: | |
730 | manager_free(m); | |
8e274523 | 731 | return r; |
60918275 LP |
732 | } |
733 | ||
d86f9d52 | 734 | static int manager_setup_notify(Manager *m) { |
7181dbdb | 735 | int r; |
d86f9d52 | 736 | |
e0a3da1f | 737 | if (m->test_run_flags) |
0d8c31ff ZJS |
738 | return 0; |
739 | ||
d86f9d52 LP |
740 | if (m->notify_fd < 0) { |
741 | _cleanup_close_ int fd = -1; | |
920b52e4 | 742 | union sockaddr_union sa = { |
7181dbdb LP |
743 | .sa.sa_family = AF_UNIX, |
744 | }; | |
55836941 | 745 | static const int one = 1; |
d86f9d52 LP |
746 | |
747 | /* First free all secondary fields */ | |
a1e58e8e | 748 | m->notify_socket = mfree(m->notify_socket); |
d86f9d52 LP |
749 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
750 | ||
751 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
4a62c710 MS |
752 | if (fd < 0) |
753 | return log_error_errno(errno, "Failed to allocate notification socket: %m"); | |
d86f9d52 | 754 | |
a47806fa LP |
755 | fd_inc_rcvbuf(fd, NOTIFY_RCVBUF_SIZE); |
756 | ||
3536f49e | 757 | m->notify_socket = strappend(m->prefix[EXEC_DIRECTORY_RUNTIME], "/systemd/notify"); |
498e87d6 LP |
758 | if (!m->notify_socket) |
759 | return log_oom(); | |
760 | ||
761 | (void) mkdir_parents_label(m->notify_socket, 0755); | |
f0e62e89 | 762 | (void) unlink(m->notify_socket); |
7181dbdb LP |
763 | |
764 | strncpy(sa.un.sun_path, m->notify_socket, sizeof(sa.un.sun_path)-1); | |
fc2fffe7 | 765 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
4a62c710 MS |
766 | if (r < 0) |
767 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
d86f9d52 LP |
768 | |
769 | r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); | |
4a62c710 MS |
770 | if (r < 0) |
771 | return log_error_errno(errno, "SO_PASSCRED failed: %m"); | |
d86f9d52 | 772 | |
d86f9d52 LP |
773 | m->notify_fd = fd; |
774 | fd = -1; | |
775 | ||
776 | log_debug("Using notification socket %s", m->notify_socket); | |
777 | } | |
778 | ||
779 | if (!m->notify_event_source) { | |
151b9b96 | 780 | r = sd_event_add_io(m->event, &m->notify_event_source, m->notify_fd, EPOLLIN, manager_dispatch_notify_fd, m); |
895b3a7b MS |
781 | if (r < 0) |
782 | return log_error_errno(r, "Failed to allocate notify event source: %m"); | |
d86f9d52 | 783 | |
d8fdc620 LP |
784 | /* Process notification messages a bit earlier than SIGCHLD, so that we can still identify to which |
785 | * service an exit message belongs. */ | |
df006034 | 786 | r = sd_event_source_set_priority(m->notify_event_source, SD_EVENT_PRIORITY_NORMAL-7); |
23bbb0de MS |
787 | if (r < 0) |
788 | return log_error_errno(r, "Failed to set priority of notify event source: %m"); | |
7dfbe2e3 TG |
789 | |
790 | (void) sd_event_source_set_description(m->notify_event_source, "manager-notify"); | |
d86f9d52 LP |
791 | } |
792 | ||
793 | return 0; | |
794 | } | |
795 | ||
d8fdc620 LP |
796 | static int manager_setup_cgroups_agent(Manager *m) { |
797 | ||
798 | static const union sockaddr_union sa = { | |
799 | .un.sun_family = AF_UNIX, | |
800 | .un.sun_path = "/run/systemd/cgroups-agent", | |
801 | }; | |
802 | int r; | |
803 | ||
804 | /* This creates a listening socket we receive cgroups agent messages on. We do not use D-Bus for delivering | |
805 | * these messages from the cgroups agent binary to PID 1, as the cgroups agent binary is very short-living, and | |
806 | * each instance of it needs a new D-Bus connection. Since D-Bus connections are SOCK_STREAM/AF_UNIX, on | |
807 | * overloaded systems the backlog of the D-Bus socket becomes relevant, as not more than the configured number | |
808 | * of D-Bus connections may be queued until the kernel will start dropping further incoming connections, | |
809 | * possibly resulting in lost cgroups agent messages. To avoid this, we'll use a private SOCK_DGRAM/AF_UNIX | |
810 | * socket, where no backlog is relevant as communication may take place without an actual connect() cycle, and | |
811 | * we thus won't lose messages. | |
812 | * | |
813 | * Note that PID 1 will forward the agent message to system bus, so that the user systemd instance may listen | |
814 | * to it. The system instance hence listens on this special socket, but the user instances listen on the system | |
815 | * bus for these messages. */ | |
816 | ||
e0a3da1f | 817 | if (m->test_run_flags) |
d8fdc620 LP |
818 | return 0; |
819 | ||
820 | if (!MANAGER_IS_SYSTEM(m)) | |
821 | return 0; | |
822 | ||
c22800e4 | 823 | r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER); |
b4cccbc1 LP |
824 | if (r < 0) |
825 | return log_error_errno(r, "Failed to determine whether unified cgroups hierarchy is used: %m"); | |
826 | if (r > 0) /* We don't need this anymore on the unified hierarchy */ | |
d8fdc620 LP |
827 | return 0; |
828 | ||
829 | if (m->cgroups_agent_fd < 0) { | |
830 | _cleanup_close_ int fd = -1; | |
831 | ||
832 | /* First free all secondary fields */ | |
833 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
834 | ||
835 | fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); | |
836 | if (fd < 0) | |
837 | return log_error_errno(errno, "Failed to allocate cgroups agent socket: %m"); | |
838 | ||
839 | fd_inc_rcvbuf(fd, CGROUPS_AGENT_RCVBUF_SIZE); | |
840 | ||
841 | (void) unlink(sa.un.sun_path); | |
842 | ||
843 | /* Only allow root to connect to this socket */ | |
844 | RUN_WITH_UMASK(0077) | |
fc2fffe7 | 845 | r = bind(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)); |
d8fdc620 LP |
846 | if (r < 0) |
847 | return log_error_errno(errno, "bind(%s) failed: %m", sa.un.sun_path); | |
848 | ||
849 | m->cgroups_agent_fd = fd; | |
850 | fd = -1; | |
851 | } | |
852 | ||
853 | if (!m->cgroups_agent_event_source) { | |
854 | r = sd_event_add_io(m->event, &m->cgroups_agent_event_source, m->cgroups_agent_fd, EPOLLIN, manager_dispatch_cgroups_agent_fd, m); | |
855 | if (r < 0) | |
856 | return log_error_errno(r, "Failed to allocate cgroups agent event source: %m"); | |
857 | ||
858 | /* Process cgroups notifications early, but after having processed service notification messages or | |
859 | * SIGCHLD signals, so that a cgroup running empty is always just the last safety net of notification, | |
860 | * and we collected the metadata the notification and SIGCHLD stuff offers first. Also see handling of | |
861 | * cgroup inotify for the unified cgroup stuff. */ | |
862 | r = sd_event_source_set_priority(m->cgroups_agent_event_source, SD_EVENT_PRIORITY_NORMAL-5); | |
863 | if (r < 0) | |
864 | return log_error_errno(r, "Failed to set priority of cgroups agent event source: %m"); | |
865 | ||
866 | (void) sd_event_source_set_description(m->cgroups_agent_event_source, "manager-cgroups-agent"); | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
00d9ef85 LP |
872 | static int manager_setup_user_lookup_fd(Manager *m) { |
873 | int r; | |
874 | ||
875 | assert(m); | |
876 | ||
877 | /* Set up the socket pair used for passing UID/GID resolution results from forked off processes to PID | |
878 | * 1. Background: we can't do name lookups (NSS) from PID 1, since it might involve IPC and thus activation, | |
879 | * and we might hence deadlock on ourselves. Hence we do all user/group lookups asynchronously from the forked | |
880 | * off processes right before executing the binaries to start. In order to be able to clean up any IPC objects | |
881 | * created by a unit (see RemoveIPC=) we need to know in PID 1 the used UID/GID of the executed processes, | |
882 | * hence we establish this communication channel so that forked off processes can pass their UID/GID | |
883 | * information back to PID 1. The forked off processes send their resolved UID/GID to PID 1 in a simple | |
884 | * datagram, along with their unit name, so that we can share one communication socket pair among all units for | |
885 | * this purpose. | |
886 | * | |
887 | * You might wonder why we need a communication channel for this that is independent of the usual notification | |
888 | * socket scheme (i.e. $NOTIFY_SOCKET). The primary difference is about trust: data sent via the $NOTIFY_SOCKET | |
889 | * channel is only accepted if it originates from the right unit and if reception was enabled for it. The user | |
890 | * lookup socket OTOH is only accessible by PID 1 and its children until they exec(), and always available. | |
891 | * | |
892 | * Note that this function is called under two circumstances: when we first initialize (in which case we | |
893 | * allocate both the socket pair and the event source to listen on it), and when we deserialize after a reload | |
894 | * (in which case the socket pair already exists but we still need to allocate the event source for it). */ | |
895 | ||
896 | if (m->user_lookup_fds[0] < 0) { | |
897 | ||
898 | /* Free all secondary fields */ | |
899 | safe_close_pair(m->user_lookup_fds); | |
900 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
901 | ||
902 | if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, m->user_lookup_fds) < 0) | |
903 | return log_error_errno(errno, "Failed to allocate user lookup socket: %m"); | |
904 | ||
905 | (void) fd_inc_rcvbuf(m->user_lookup_fds[0], NOTIFY_RCVBUF_SIZE); | |
906 | } | |
907 | ||
908 | if (!m->user_lookup_event_source) { | |
909 | r = sd_event_add_io(m->event, &m->user_lookup_event_source, m->user_lookup_fds[0], EPOLLIN, manager_dispatch_user_lookup_fd, m); | |
910 | if (r < 0) | |
911 | return log_error_errno(errno, "Failed to allocate user lookup event source: %m"); | |
912 | ||
913 | /* Process even earlier than the notify event source, so that we always know first about valid UID/GID | |
914 | * resolutions */ | |
915 | r = sd_event_source_set_priority(m->user_lookup_event_source, SD_EVENT_PRIORITY_NORMAL-8); | |
916 | if (r < 0) | |
917 | return log_error_errno(errno, "Failed to set priority ot user lookup event source: %m"); | |
918 | ||
919 | (void) sd_event_source_set_description(m->user_lookup_event_source, "user-lookup"); | |
920 | } | |
921 | ||
922 | return 0; | |
923 | } | |
924 | ||
d86f9d52 LP |
925 | static int manager_connect_bus(Manager *m, bool reexecuting) { |
926 | bool try_bus_connect; | |
5463fa0a | 927 | Unit *u = NULL; |
d86f9d52 LP |
928 | |
929 | assert(m); | |
930 | ||
e0a3da1f | 931 | if (m->test_run_flags) |
0d8c31ff ZJS |
932 | return 0; |
933 | ||
5463fa0a MS |
934 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); |
935 | ||
d86f9d52 | 936 | try_bus_connect = |
5463fa0a MS |
937 | (u && UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) && |
938 | (reexecuting || | |
939 | (MANAGER_IS_USER(m) && getenv("DBUS_SESSION_BUS_ADDRESS"))); | |
d86f9d52 | 940 | |
ff9b60f3 | 941 | /* Try to connect to the buses, if possible. */ |
d86f9d52 LP |
942 | return bus_init(m, try_bus_connect); |
943 | } | |
944 | ||
23a177ef | 945 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 946 | Unit *u; |
23a177ef LP |
947 | unsigned n = 0; |
948 | ||
949 | assert(m); | |
950 | ||
595ed347 MS |
951 | while ((u = m->cleanup_queue)) { |
952 | assert(u->in_cleanup_queue); | |
23a177ef | 953 | |
595ed347 | 954 | unit_free(u); |
23a177ef LP |
955 | n++; |
956 | } | |
957 | ||
958 | return n; | |
959 | } | |
960 | ||
eced69b3 | 961 | enum { |
35b8ca3a | 962 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
963 | GC_OFFSET_UNSURE, /* No clue */ |
964 | GC_OFFSET_GOOD, /* We still need this unit */ | |
965 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
966 | _GC_OFFSET_MAX | |
967 | }; | |
968 | ||
00d9ef85 | 969 | static void unit_gc_mark_good(Unit *u, unsigned gc_marker) { |
4892084f LN |
970 | Iterator i; |
971 | Unit *other; | |
972 | ||
973 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; | |
974 | ||
975 | /* Recursively mark referenced units as GOOD as well */ | |
976 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCES], i) | |
977 | if (other->gc_marker == gc_marker + GC_OFFSET_UNSURE) | |
978 | unit_gc_mark_good(other, gc_marker); | |
979 | } | |
980 | ||
eced69b3 | 981 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { |
701cc384 LP |
982 | Iterator i; |
983 | Unit *other; | |
eced69b3 | 984 | bool is_bad; |
701cc384 LP |
985 | |
986 | assert(u); | |
987 | ||
ac155bb8 MS |
988 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
989 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
4892084f | 990 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE || |
ac155bb8 | 991 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) |
701cc384 LP |
992 | return; |
993 | ||
ac155bb8 | 994 | if (u->in_cleanup_queue) |
701cc384 LP |
995 | goto bad; |
996 | ||
997 | if (unit_check_gc(u)) | |
998 | goto good; | |
999 | ||
ac155bb8 | 1000 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
1001 | |
1002 | is_bad = true; | |
1003 | ||
ac155bb8 | 1004 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
1005 | unit_gc_sweep(other, gc_marker); |
1006 | ||
ac155bb8 | 1007 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 1008 | goto good; |
eced69b3 | 1009 | |
ac155bb8 | 1010 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 1011 | is_bad = false; |
701cc384 LP |
1012 | } |
1013 | ||
eced69b3 LP |
1014 | if (is_bad) |
1015 | goto bad; | |
1016 | ||
1017 | /* We were unable to find anything out about this entry, so | |
1018 | * let's investigate it later */ | |
ac155bb8 | 1019 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
1020 | unit_add_to_gc_queue(u); |
1021 | return; | |
1022 | ||
701cc384 | 1023 | bad: |
eced69b3 LP |
1024 | /* We definitely know that this one is not useful anymore, so |
1025 | * let's mark it for deletion */ | |
ac155bb8 | 1026 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 1027 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
1028 | return; |
1029 | ||
1030 | good: | |
4892084f | 1031 | unit_gc_mark_good(u, gc_marker); |
701cc384 LP |
1032 | } |
1033 | ||
c5a97ed1 LP |
1034 | static unsigned manager_dispatch_gc_unit_queue(Manager *m) { |
1035 | unsigned n = 0, gc_marker; | |
595ed347 | 1036 | Unit *u; |
701cc384 LP |
1037 | |
1038 | assert(m); | |
1039 | ||
cf1265e1 | 1040 | /* log_debug("Running GC..."); */ |
701cc384 | 1041 | |
eced69b3 LP |
1042 | m->gc_marker += _GC_OFFSET_MAX; |
1043 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 1044 | m->gc_marker = 1; |
701cc384 | 1045 | |
eced69b3 LP |
1046 | gc_marker = m->gc_marker; |
1047 | ||
c5a97ed1 | 1048 | while ((u = m->gc_unit_queue)) { |
595ed347 | 1049 | assert(u->in_gc_queue); |
701cc384 | 1050 | |
595ed347 | 1051 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 1052 | |
c5a97ed1 | 1053 | LIST_REMOVE(gc_queue, m->gc_unit_queue, u); |
595ed347 | 1054 | u->in_gc_queue = false; |
701cc384 LP |
1055 | |
1056 | n++; | |
1057 | ||
595ed347 MS |
1058 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
1059 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
cc3bc3e6 | 1060 | if (u->id) |
f2341e0a | 1061 | log_unit_debug(u, "Collecting."); |
595ed347 MS |
1062 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
1063 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
1064 | } |
1065 | } | |
1066 | ||
701cc384 LP |
1067 | return n; |
1068 | } | |
1069 | ||
c5a97ed1 LP |
1070 | static unsigned manager_dispatch_gc_job_queue(Manager *m) { |
1071 | unsigned n = 0; | |
1072 | Job *j; | |
1073 | ||
1074 | assert(m); | |
1075 | ||
1076 | while ((j = m->gc_job_queue)) { | |
1077 | assert(j->in_gc_queue); | |
1078 | ||
1079 | LIST_REMOVE(gc_queue, m->gc_job_queue, j); | |
1080 | j->in_gc_queue = false; | |
1081 | ||
1082 | n++; | |
1083 | ||
1084 | if (job_check_gc(j)) | |
1085 | continue; | |
1086 | ||
1087 | log_unit_debug(j->unit, "Collecting job."); | |
1088 | (void) job_finish_and_invalidate(j, JOB_COLLECTED, false, false); | |
1089 | } | |
1090 | ||
1091 | return n; | |
1092 | } | |
1093 | ||
a16e1123 | 1094 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 1095 | Unit *u; |
60918275 LP |
1096 | |
1097 | assert(m); | |
1098 | ||
87f0e418 LP |
1099 | while ((u = hashmap_first(m->units))) |
1100 | unit_free(u); | |
964e0949 LP |
1101 | |
1102 | manager_dispatch_cleanup_queue(m); | |
1103 | ||
1104 | assert(!m->load_queue); | |
1105 | assert(!m->run_queue); | |
1106 | assert(!m->dbus_unit_queue); | |
1107 | assert(!m->dbus_job_queue); | |
1108 | assert(!m->cleanup_queue); | |
c5a97ed1 LP |
1109 | assert(!m->gc_unit_queue); |
1110 | assert(!m->gc_job_queue); | |
964e0949 | 1111 | |
964e0949 LP |
1112 | assert(hashmap_isempty(m->jobs)); |
1113 | assert(hashmap_isempty(m->units)); | |
9e9e2b72 MS |
1114 | |
1115 | m->n_on_console = 0; | |
1116 | m->n_running_jobs = 0; | |
a16e1123 LP |
1117 | } |
1118 | ||
06d8d842 | 1119 | Manager* manager_free(Manager *m) { |
a16e1123 | 1120 | UnitType c; |
c93ff2e9 | 1121 | int i; |
35aba85a | 1122 | ExecDirectoryType dt; |
87f0e418 | 1123 | |
06d8d842 ZJS |
1124 | if (!m) |
1125 | return NULL; | |
a16e1123 LP |
1126 | |
1127 | manager_clear_jobs_and_units(m); | |
23a177ef | 1128 | |
7824bbeb LP |
1129 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
1130 | if (unit_vtable[c]->shutdown) | |
1131 | unit_vtable[c]->shutdown(m); | |
1132 | ||
a1f31f47 | 1133 | /* If we reexecute ourselves, we keep the root cgroup around */ |
c6c18be3 | 1134 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 1135 | |
07a78643 | 1136 | lookup_paths_flush_generator(&m->lookup_paths); |
5a1e9937 | 1137 | |
5e8d1c9a | 1138 | bus_done(m); |
ea430986 | 1139 | |
29206d46 LP |
1140 | dynamic_user_vacuum(m, false); |
1141 | hashmap_free(m->dynamic_users); | |
1142 | ||
87f0e418 | 1143 | hashmap_free(m->units); |
4b58153d | 1144 | hashmap_free(m->units_by_invocation_id); |
60918275 | 1145 | hashmap_free(m->jobs); |
5ba6985b LP |
1146 | hashmap_free(m->watch_pids1); |
1147 | hashmap_free(m->watch_pids2); | |
05e343b7 | 1148 | hashmap_free(m->watch_bus); |
9152c765 | 1149 | |
95ae05c0 | 1150 | set_free(m->startup_units); |
f755e3b7 LP |
1151 | set_free(m->failed_units); |
1152 | ||
718db961 LP |
1153 | sd_event_source_unref(m->signal_event_source); |
1154 | sd_event_source_unref(m->notify_event_source); | |
d8fdc620 | 1155 | sd_event_source_unref(m->cgroups_agent_event_source); |
718db961 LP |
1156 | sd_event_source_unref(m->time_change_event_source); |
1157 | sd_event_source_unref(m->jobs_in_progress_event_source); | |
752b5905 | 1158 | sd_event_source_unref(m->run_queue_event_source); |
00d9ef85 | 1159 | sd_event_source_unref(m->user_lookup_event_source); |
718db961 | 1160 | |
03e334a1 LP |
1161 | safe_close(m->signal_fd); |
1162 | safe_close(m->notify_fd); | |
d8fdc620 | 1163 | safe_close(m->cgroups_agent_fd); |
03e334a1 | 1164 | safe_close(m->time_change_fd); |
00d9ef85 | 1165 | safe_close_pair(m->user_lookup_fds); |
718db961 | 1166 | |
e46b13c8 ZJS |
1167 | manager_close_ask_password(m); |
1168 | ||
718db961 LP |
1169 | manager_close_idle_pipe(m); |
1170 | ||
9670d583 | 1171 | udev_unref(m->udev); |
718db961 | 1172 | sd_event_unref(m->event); |
60918275 | 1173 | |
c952c6ec LP |
1174 | free(m->notify_socket); |
1175 | ||
84e3543e | 1176 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 1177 | strv_free(m->environment); |
036643a2 | 1178 | |
4ad49000 | 1179 | hashmap_free(m->cgroup_unit); |
c6c18be3 | 1180 | set_free_free(m->unit_path_cache); |
33be102a | 1181 | |
664f88a7 LP |
1182 | free(m->switch_root); |
1183 | free(m->switch_root_init); | |
1184 | ||
517d56b1 | 1185 | for (i = 0; i < _RLIMIT_MAX; i++) |
d9814c76 | 1186 | m->rlimit[i] = mfree(m->rlimit[i]); |
c93ff2e9 | 1187 | |
a57f7e2c LP |
1188 | assert(hashmap_isempty(m->units_requiring_mounts_for)); |
1189 | hashmap_free(m->units_requiring_mounts_for); | |
1190 | ||
00d9ef85 LP |
1191 | hashmap_free(m->uid_refs); |
1192 | hashmap_free(m->gid_refs); | |
1193 | ||
35aba85a YW |
1194 | for (dt = 0; dt < _EXEC_DIRECTORY_MAX; dt++) |
1195 | m->prefix[dt] = mfree(m->prefix[dt]); | |
1196 | ||
6b430fdb | 1197 | return mfree(m); |
60918275 LP |
1198 | } |
1199 | ||
ba64af90 | 1200 | void manager_enumerate(Manager *m) { |
f50e0a01 | 1201 | UnitType c; |
f50e0a01 LP |
1202 | |
1203 | assert(m); | |
1204 | ||
a16e1123 LP |
1205 | /* Let's ask every type to load all units from disk/kernel |
1206 | * that it might know */ | |
0faacd47 | 1207 | for (c = 0; c < _UNIT_TYPE_MAX; c++) { |
1c2e9646 | 1208 | if (!unit_type_supported(c)) { |
03afec3c | 1209 | log_debug("Unit type .%s is not supported on this system.", unit_type_to_string(c)); |
0faacd47 | 1210 | continue; |
a57f7e2c | 1211 | } |
f50e0a01 | 1212 | |
0faacd47 LP |
1213 | if (!unit_vtable[c]->enumerate) |
1214 | continue; | |
1215 | ||
ba64af90 | 1216 | unit_vtable[c]->enumerate(m); |
0faacd47 LP |
1217 | } |
1218 | ||
f50e0a01 | 1219 | manager_dispatch_load_queue(m); |
a16e1123 LP |
1220 | } |
1221 | ||
007c6337 | 1222 | static void manager_coldplug(Manager *m) { |
a16e1123 LP |
1223 | Iterator i; |
1224 | Unit *u; | |
1225 | char *k; | |
007c6337 | 1226 | int r; |
a16e1123 LP |
1227 | |
1228 | assert(m); | |
f50e0a01 LP |
1229 | |
1230 | /* Then, let's set up their initial state. */ | |
1231 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1232 | ||
1233 | /* ignore aliases */ | |
ac155bb8 | 1234 | if (u->id != k) |
f50e0a01 LP |
1235 | continue; |
1236 | ||
007c6337 LP |
1237 | r = unit_coldplug(u); |
1238 | if (r < 0) | |
1239 | log_warning_errno(r, "We couldn't coldplug %s, proceeding anyway: %m", u->id); | |
f50e0a01 | 1240 | } |
a16e1123 LP |
1241 | } |
1242 | ||
fe51822e LP |
1243 | static void manager_build_unit_path_cache(Manager *m) { |
1244 | char **i; | |
fe51822e LP |
1245 | int r; |
1246 | ||
1247 | assert(m); | |
1248 | ||
1249 | set_free_free(m->unit_path_cache); | |
1250 | ||
d5099efc | 1251 | m->unit_path_cache = set_new(&string_hash_ops); |
874310b7 | 1252 | if (!m->unit_path_cache) { |
d063a527 LP |
1253 | r = -ENOMEM; |
1254 | goto fail; | |
fe51822e LP |
1255 | } |
1256 | ||
1257 | /* This simply builds a list of files we know exist, so that | |
1258 | * we don't always have to go to disk */ | |
1259 | ||
a3c4eb07 | 1260 | STRV_FOREACH(i, m->lookup_paths.search_path) { |
d063a527 | 1261 | _cleanup_closedir_ DIR *d = NULL; |
fe51822e LP |
1262 | struct dirent *de; |
1263 | ||
bd0af849 ZJS |
1264 | d = opendir(*i); |
1265 | if (!d) { | |
874310b7 | 1266 | if (errno != ENOENT) |
d063a527 | 1267 | log_warning_errno(errno, "Failed to open directory %s, ignoring: %m", *i); |
fe51822e LP |
1268 | continue; |
1269 | } | |
1270 | ||
d063a527 | 1271 | FOREACH_DIRENT(de, d, r = -errno; goto fail) { |
fe51822e LP |
1272 | char *p; |
1273 | ||
605405c6 | 1274 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name); |
44d91056 | 1275 | if (!p) { |
fe51822e LP |
1276 | r = -ENOMEM; |
1277 | goto fail; | |
1278 | } | |
1279 | ||
ef42202a ZJS |
1280 | r = set_consume(m->unit_path_cache, p); |
1281 | if (r < 0) | |
fe51822e | 1282 | goto fail; |
fe51822e | 1283 | } |
fe51822e LP |
1284 | } |
1285 | ||
1286 | return; | |
1287 | ||
1288 | fail: | |
d063a527 LP |
1289 | log_warning_errno(r, "Failed to build unit path cache, proceeding without: %m"); |
1290 | m->unit_path_cache = set_free_free(m->unit_path_cache); | |
fe51822e LP |
1291 | } |
1292 | ||
9ff1a6f1 | 1293 | static void manager_distribute_fds(Manager *m, FDSet *fds) { |
9588bc32 | 1294 | Iterator i; |
9ff1a6f1 | 1295 | Unit *u; |
9588bc32 LP |
1296 | |
1297 | assert(m); | |
1298 | ||
1299 | HASHMAP_FOREACH(u, m->units, i) { | |
1300 | ||
1301 | if (fdset_size(fds) <= 0) | |
1302 | break; | |
1303 | ||
9ff1a6f1 LP |
1304 | if (!UNIT_VTABLE(u)->distribute_fds) |
1305 | continue; | |
9588bc32 | 1306 | |
9ff1a6f1 LP |
1307 | UNIT_VTABLE(u)->distribute_fds(u, fds); |
1308 | } | |
9588bc32 LP |
1309 | } |
1310 | ||
a16e1123 LP |
1311 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
1312 | int r, q; | |
1313 | ||
1314 | assert(m); | |
1315 | ||
a1f31f47 ZJS |
1316 | /* If we are running in test mode, we still want to run the generators, |
1317 | * but we should not touch the real generator directories. */ | |
1318 | r = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, | |
e0a3da1f | 1319 | m->test_run_flags ? LOOKUP_PATHS_TEMPORARY_GENERATED : 0, |
a1f31f47 | 1320 | NULL); |
e801700e ZJS |
1321 | if (r < 0) |
1322 | return r; | |
5a1e9937 | 1323 | |
64691d20 ZJS |
1324 | r = manager_run_environment_generators(m); |
1325 | if (r < 0) | |
1326 | return r; | |
1327 | ||
a1f31f47 ZJS |
1328 | /* Make sure the transient directory always exists, so that it remains |
1329 | * in the search path */ | |
1330 | r = mkdir_p_label(m->lookup_paths.transient, 0755); | |
1331 | if (r < 0) | |
1332 | return r; | |
39591351 | 1333 | |
a3c4eb07 LP |
1334 | dual_timestamp_get(&m->generators_start_timestamp); |
1335 | r = manager_run_generators(m); | |
1336 | dual_timestamp_get(&m->generators_finish_timestamp); | |
07719a21 LP |
1337 | if (r < 0) |
1338 | return r; | |
1339 | ||
81fe6cde ZJS |
1340 | if (m->first_boot > 0 && |
1341 | m->unit_file_scope == UNIT_FILE_SYSTEM && | |
e0a3da1f | 1342 | !m->test_run_flags) { |
81fe6cde | 1343 | |
28dd66ec LB |
1344 | q = unit_file_preset_all(UNIT_FILE_SYSTEM, 0, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, NULL, 0); |
1345 | if (q < 0) | |
1346 | log_full_errno(q == -EEXIST ? LOG_NOTICE : LOG_WARNING, q, "Failed to populate /etc with preset unit settings, ignoring: %m"); | |
1347 | else | |
1348 | log_info("Populated /etc with preset unit settings."); | |
1349 | } | |
1350 | ||
a1453343 | 1351 | lookup_paths_reduce(&m->lookup_paths); |
fe51822e LP |
1352 | manager_build_unit_path_cache(m); |
1353 | ||
9f611ad8 LP |
1354 | /* If we will deserialize make sure that during enumeration |
1355 | * this is already known, so we increase the counter here | |
1356 | * already */ | |
1357 | if (serialization) | |
313cefa1 | 1358 | m->n_reloading++; |
9f611ad8 | 1359 | |
a16e1123 | 1360 | /* First, enumerate what we can from all config files */ |
718db961 | 1361 | dual_timestamp_get(&m->units_load_start_timestamp); |
ba64af90 | 1362 | manager_enumerate(m); |
718db961 | 1363 | dual_timestamp_get(&m->units_load_finish_timestamp); |
a16e1123 LP |
1364 | |
1365 | /* Second, deserialize if there is something to deserialize */ | |
07429866 | 1366 | if (serialization) { |
1cd974ed | 1367 | r = manager_deserialize(m, serialization, fds); |
07429866 ZJS |
1368 | if (r < 0) |
1369 | log_error_errno(r, "Deserialization failed: %m"); | |
1370 | } | |
a16e1123 | 1371 | |
01e10de3 LP |
1372 | /* Any fds left? Find some unit which wants them. This is |
1373 | * useful to allow container managers to pass some file | |
1374 | * descriptors to us pre-initialized. This enables | |
1375 | * socket-based activation of entire containers. */ | |
9ff1a6f1 | 1376 | manager_distribute_fds(m, fds); |
01e10de3 | 1377 | |
d86f9d52 LP |
1378 | /* We might have deserialized the notify fd, but if we didn't |
1379 | * then let's create the bus now */ | |
1cd974ed ZJS |
1380 | q = manager_setup_notify(m); |
1381 | if (q < 0 && r == 0) | |
1382 | r = q; | |
d86f9d52 | 1383 | |
d8fdc620 LP |
1384 | q = manager_setup_cgroups_agent(m); |
1385 | if (q < 0 && r == 0) | |
1386 | r = q; | |
1387 | ||
00d9ef85 LP |
1388 | q = manager_setup_user_lookup_fd(m); |
1389 | if (q < 0 && r == 0) | |
1390 | r = q; | |
1391 | ||
232f6754 | 1392 | /* Let's connect to the bus now. */ |
05a98afd LP |
1393 | (void) manager_connect_bus(m, !!serialization); |
1394 | ||
1395 | (void) bus_track_coldplug(m, &m->subscribed, false, m->deserialized_subscribed); | |
1396 | m->deserialized_subscribed = strv_free(m->deserialized_subscribed); | |
e3dd987c | 1397 | |
a16e1123 | 1398 | /* Third, fire things up! */ |
007c6337 | 1399 | manager_coldplug(m); |
a16e1123 | 1400 | |
29206d46 LP |
1401 | /* Release any dynamic users no longer referenced */ |
1402 | dynamic_user_vacuum(m, true); | |
1403 | ||
00d9ef85 LP |
1404 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
1405 | manager_vacuum_uid_refs(m); | |
1406 | manager_vacuum_gid_refs(m); | |
1407 | ||
9f611ad8 | 1408 | if (serialization) { |
a7556052 | 1409 | assert(m->n_reloading > 0); |
313cefa1 | 1410 | m->n_reloading--; |
71445ae7 LP |
1411 | |
1412 | /* Let's wait for the UnitNew/JobNew messages being | |
1413 | * sent, before we notify that the reload is | |
1414 | * finished */ | |
1415 | m->send_reloading_done = true; | |
9f611ad8 LP |
1416 | } |
1417 | ||
a16e1123 | 1418 | return r; |
f50e0a01 LP |
1419 | } |
1420 | ||
4bd29fe5 | 1421 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret) { |
e5b5ae50 | 1422 | int r; |
7527cb52 | 1423 | Transaction *tr; |
e5b5ae50 LP |
1424 | |
1425 | assert(m); | |
1426 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1427 | assert(unit); |
e5b5ae50 | 1428 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1429 | |
7358dc02 ZJS |
1430 | if (mode == JOB_ISOLATE && type != JOB_START) |
1431 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Isolate is only valid for start."); | |
c497c7a9 | 1432 | |
7358dc02 ZJS |
1433 | if (mode == JOB_ISOLATE && !unit->allow_isolate) |
1434 | return sd_bus_error_setf(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
2528a7a6 | 1435 | |
f2341e0a | 1436 | log_unit_debug(unit, "Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1437 | |
c6497ccb | 1438 | type = job_type_collapse(type, unit); |
e0209d83 | 1439 | |
23ade460 | 1440 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
1441 | if (!tr) |
1442 | return -ENOMEM; | |
11dd41ce | 1443 | |
4bd29fe5 | 1444 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, false, |
7527cb52 | 1445 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, |
b94fbd30 | 1446 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
1447 | if (r < 0) |
1448 | goto tr_abort; | |
c497c7a9 | 1449 | |
7527cb52 MS |
1450 | if (mode == JOB_ISOLATE) { |
1451 | r = transaction_add_isolate_jobs(tr, m); | |
1452 | if (r < 0) | |
1453 | goto tr_abort; | |
1454 | } | |
1455 | ||
1456 | r = transaction_activate(tr, m, mode, e); | |
1457 | if (r < 0) | |
1458 | goto tr_abort; | |
e5b5ae50 | 1459 | |
f2341e0a | 1460 | log_unit_debug(unit, |
66870f90 ZJS |
1461 | "Enqueued job %s/%s as %u", unit->id, |
1462 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 1463 | |
e5b5ae50 | 1464 | if (_ret) |
b94fbd30 | 1465 | *_ret = tr->anchor_job; |
60918275 | 1466 | |
7527cb52 | 1467 | transaction_free(tr); |
e5b5ae50 | 1468 | return 0; |
7527cb52 MS |
1469 | |
1470 | tr_abort: | |
1471 | transaction_abort(tr); | |
1472 | transaction_free(tr); | |
1473 | return r; | |
e5b5ae50 | 1474 | } |
60918275 | 1475 | |
53f18416 | 1476 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **ret) { |
4440b27d | 1477 | Unit *unit = NULL; /* just to appease gcc, initialization is not really necessary */ |
28247076 LP |
1478 | int r; |
1479 | ||
1480 | assert(m); | |
1481 | assert(type < _JOB_TYPE_MAX); | |
1482 | assert(name); | |
1483 | assert(mode < _JOB_MODE_MAX); | |
1484 | ||
c3090674 LP |
1485 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
1486 | if (r < 0) | |
28247076 | 1487 | return r; |
4440b27d | 1488 | assert(unit); |
28247076 | 1489 | |
53f18416 LP |
1490 | return manager_add_job(m, type, unit, mode, e, ret); |
1491 | } | |
1492 | ||
1493 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret) { | |
4afd3348 | 1494 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
53f18416 LP |
1495 | int r; |
1496 | ||
1497 | assert(m); | |
1498 | assert(type < _JOB_TYPE_MAX); | |
1499 | assert(name); | |
1500 | assert(mode < _JOB_MODE_MAX); | |
1501 | ||
1502 | r = manager_add_job_by_name(m, type, name, mode, &error, ret); | |
1503 | if (r < 0) | |
1504 | return log_warning_errno(r, "Failed to enqueue %s job for %s: %s", job_mode_to_string(mode), name, bus_error_message(&error, r)); | |
1505 | ||
1506 | return r; | |
28247076 LP |
1507 | } |
1508 | ||
15d167f8 JW |
1509 | int manager_propagate_reload(Manager *m, Unit *unit, JobMode mode, sd_bus_error *e) { |
1510 | int r; | |
1511 | Transaction *tr; | |
1512 | ||
1513 | assert(m); | |
1514 | assert(unit); | |
1515 | assert(mode < _JOB_MODE_MAX); | |
1516 | assert(mode != JOB_ISOLATE); /* Isolate is only valid for start */ | |
1517 | ||
1518 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); | |
1519 | if (!tr) | |
1520 | return -ENOMEM; | |
1521 | ||
1522 | /* We need an anchor job */ | |
1523 | r = transaction_add_job_and_dependencies(tr, JOB_NOP, unit, NULL, false, false, true, true, e); | |
1524 | if (r < 0) | |
1525 | goto tr_abort; | |
1526 | ||
1527 | /* Failure in adding individual dependencies is ignored, so this always succeeds. */ | |
1528 | transaction_add_propagate_reload_jobs(tr, unit, tr->anchor_job, mode == JOB_IGNORE_DEPENDENCIES, e); | |
1529 | ||
1530 | r = transaction_activate(tr, m, mode, e); | |
1531 | if (r < 0) | |
1532 | goto tr_abort; | |
1533 | ||
1534 | transaction_free(tr); | |
1535 | return 0; | |
1536 | ||
1537 | tr_abort: | |
1538 | transaction_abort(tr); | |
1539 | transaction_free(tr); | |
1540 | return r; | |
1541 | } | |
1542 | ||
60918275 LP |
1543 | Job *manager_get_job(Manager *m, uint32_t id) { |
1544 | assert(m); | |
1545 | ||
1546 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1547 | } | |
1548 | ||
87f0e418 | 1549 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1550 | assert(m); |
1551 | assert(name); | |
1552 | ||
87f0e418 | 1553 | return hashmap_get(m->units, name); |
60918275 LP |
1554 | } |
1555 | ||
c1e1601e | 1556 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 1557 | Unit *u; |
c1e1601e | 1558 | unsigned n = 0; |
60918275 LP |
1559 | |
1560 | assert(m); | |
1561 | ||
223dabab LP |
1562 | /* Make sure we are not run recursively */ |
1563 | if (m->dispatching_load_queue) | |
c1e1601e | 1564 | return 0; |
223dabab LP |
1565 | |
1566 | m->dispatching_load_queue = true; | |
1567 | ||
87f0e418 | 1568 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1569 | * tries to load its data until the queue is empty */ |
1570 | ||
595ed347 MS |
1571 | while ((u = m->load_queue)) { |
1572 | assert(u->in_load_queue); | |
034c6ed7 | 1573 | |
595ed347 | 1574 | unit_load(u); |
c1e1601e | 1575 | n++; |
60918275 LP |
1576 | } |
1577 | ||
223dabab | 1578 | m->dispatching_load_queue = false; |
c1e1601e | 1579 | return n; |
60918275 LP |
1580 | } |
1581 | ||
c2756a68 LP |
1582 | int manager_load_unit_prepare( |
1583 | Manager *m, | |
1584 | const char *name, | |
1585 | const char *path, | |
718db961 | 1586 | sd_bus_error *e, |
c2756a68 LP |
1587 | Unit **_ret) { |
1588 | ||
87f0e418 | 1589 | Unit *ret; |
7d17cfbc | 1590 | UnitType t; |
60918275 LP |
1591 | int r; |
1592 | ||
1593 | assert(m); | |
9e2f7c11 | 1594 | assert(name || path); |
7a6a095a | 1595 | assert(_ret); |
60918275 | 1596 | |
db06e3b6 LP |
1597 | /* This will prepare the unit for loading, but not actually |
1598 | * load anything from disk. */ | |
0301abf4 | 1599 | |
718db961 LP |
1600 | if (path && !is_path(path)) |
1601 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not absolute.", path); | |
9e2f7c11 LP |
1602 | |
1603 | if (!name) | |
2b6bf07d | 1604 | name = basename(path); |
9e2f7c11 | 1605 | |
7d17cfbc MS |
1606 | t = unit_name_to_type(name); |
1607 | ||
5d512d54 LN |
1608 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { |
1609 | if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) | |
1610 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is missing the instance name.", name); | |
1611 | ||
718db961 | 1612 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is not valid.", name); |
5d512d54 | 1613 | } |
60918275 | 1614 | |
7d17cfbc MS |
1615 | ret = manager_get_unit(m, name); |
1616 | if (ret) { | |
034c6ed7 | 1617 | *_ret = ret; |
413d6313 | 1618 | return 1; |
034c6ed7 | 1619 | } |
60918275 | 1620 | |
7d17cfbc MS |
1621 | ret = unit_new(m, unit_vtable[t]->object_size); |
1622 | if (!ret) | |
60918275 LP |
1623 | return -ENOMEM; |
1624 | ||
7d17cfbc | 1625 | if (path) { |
ac155bb8 MS |
1626 | ret->fragment_path = strdup(path); |
1627 | if (!ret->fragment_path) { | |
0301abf4 LP |
1628 | unit_free(ret); |
1629 | return -ENOMEM; | |
1630 | } | |
7d17cfbc | 1631 | } |
0301abf4 | 1632 | |
1058cbf2 ZJS |
1633 | r = unit_add_name(ret, name); |
1634 | if (r < 0) { | |
87f0e418 | 1635 | unit_free(ret); |
1ffba6fe | 1636 | return r; |
60918275 LP |
1637 | } |
1638 | ||
87f0e418 | 1639 | unit_add_to_load_queue(ret); |
c1e1601e | 1640 | unit_add_to_dbus_queue(ret); |
949061f0 | 1641 | unit_add_to_gc_queue(ret); |
c1e1601e | 1642 | |
7a6a095a | 1643 | *_ret = ret; |
db06e3b6 LP |
1644 | |
1645 | return 0; | |
1646 | } | |
1647 | ||
c2756a68 LP |
1648 | int manager_load_unit( |
1649 | Manager *m, | |
1650 | const char *name, | |
1651 | const char *path, | |
718db961 | 1652 | sd_bus_error *e, |
c2756a68 LP |
1653 | Unit **_ret) { |
1654 | ||
db06e3b6 LP |
1655 | int r; |
1656 | ||
1657 | assert(m); | |
7a6a095a | 1658 | assert(_ret); |
db06e3b6 LP |
1659 | |
1660 | /* This will load the service information files, but not actually | |
1661 | * start any services or anything. */ | |
1662 | ||
c3090674 LP |
1663 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
1664 | if (r != 0) | |
db06e3b6 LP |
1665 | return r; |
1666 | ||
f50e0a01 | 1667 | manager_dispatch_load_queue(m); |
60918275 | 1668 | |
7a6a095a | 1669 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1670 | |
60918275 LP |
1671 | return 0; |
1672 | } | |
a66d02c3 | 1673 | |
cea8e32e | 1674 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1675 | Iterator i; |
a66d02c3 LP |
1676 | Job *j; |
1677 | ||
1678 | assert(s); | |
1679 | assert(f); | |
1680 | ||
034c6ed7 | 1681 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1682 | job_dump(j, f, prefix); |
a66d02c3 LP |
1683 | } |
1684 | ||
87f0e418 | 1685 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1686 | Iterator i; |
87f0e418 | 1687 | Unit *u; |
11dd41ce | 1688 | const char *t; |
a66d02c3 LP |
1689 | |
1690 | assert(s); | |
1691 | assert(f); | |
1692 | ||
87f0e418 | 1693 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 1694 | if (u->id == t) |
87f0e418 | 1695 | unit_dump(u, f, prefix); |
a66d02c3 | 1696 | } |
7fad411c LP |
1697 | |
1698 | void manager_clear_jobs(Manager *m) { | |
1699 | Job *j; | |
1700 | ||
1701 | assert(m); | |
1702 | ||
7fad411c | 1703 | while ((j = hashmap_first(m->jobs))) |
5273510e | 1704 | /* No need to recurse. We're cancelling all jobs. */ |
833f92ad | 1705 | job_finish_and_invalidate(j, JOB_CANCELED, false, false); |
7fad411c | 1706 | } |
83c60c9f | 1707 | |
752b5905 LP |
1708 | static int manager_dispatch_run_queue(sd_event_source *source, void *userdata) { |
1709 | Manager *m = userdata; | |
83c60c9f | 1710 | Job *j; |
034c6ed7 | 1711 | |
752b5905 LP |
1712 | assert(source); |
1713 | assert(m); | |
9152c765 | 1714 | |
034c6ed7 | 1715 | while ((j = m->run_queue)) { |
ac1135be | 1716 | assert(j->installed); |
034c6ed7 LP |
1717 | assert(j->in_run_queue); |
1718 | ||
1719 | job_run_and_invalidate(j); | |
9152c765 | 1720 | } |
034c6ed7 | 1721 | |
a0b64226 | 1722 | if (m->n_running_jobs > 0) |
03b717a3 MS |
1723 | manager_watch_jobs_in_progress(m); |
1724 | ||
31a7eb86 ZJS |
1725 | if (m->n_on_console > 0) |
1726 | manager_watch_idle_pipe(m); | |
1727 | ||
752b5905 | 1728 | return 1; |
c1e1601e LP |
1729 | } |
1730 | ||
9588bc32 | 1731 | static unsigned manager_dispatch_dbus_queue(Manager *m) { |
c1e1601e | 1732 | Job *j; |
595ed347 | 1733 | Unit *u; |
c1e1601e LP |
1734 | unsigned n = 0; |
1735 | ||
1736 | assert(m); | |
1737 | ||
1738 | if (m->dispatching_dbus_queue) | |
1739 | return 0; | |
1740 | ||
1741 | m->dispatching_dbus_queue = true; | |
1742 | ||
595ed347 MS |
1743 | while ((u = m->dbus_unit_queue)) { |
1744 | assert(u->in_dbus_queue); | |
c1e1601e | 1745 | |
595ed347 | 1746 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1747 | n++; |
1748 | } | |
1749 | ||
1750 | while ((j = m->dbus_job_queue)) { | |
1751 | assert(j->in_dbus_queue); | |
1752 | ||
1753 | bus_job_send_change_signal(j); | |
1754 | n++; | |
1755 | } | |
1756 | ||
1757 | m->dispatching_dbus_queue = false; | |
71445ae7 LP |
1758 | |
1759 | if (m->send_reloading_done) { | |
1760 | m->send_reloading_done = false; | |
1761 | ||
718db961 | 1762 | bus_manager_send_reloading(m, false); |
71445ae7 LP |
1763 | } |
1764 | ||
718db961 LP |
1765 | if (m->queued_message) |
1766 | bus_send_queued_message(m); | |
1767 | ||
c1e1601e | 1768 | return n; |
9152c765 LP |
1769 | } |
1770 | ||
d8fdc620 LP |
1771 | static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1772 | Manager *m = userdata; | |
1773 | char buf[PATH_MAX+1]; | |
1774 | ssize_t n; | |
1775 | ||
1776 | n = recv(fd, buf, sizeof(buf), 0); | |
1777 | if (n < 0) | |
1778 | return log_error_errno(errno, "Failed to read cgroups agent message: %m"); | |
1779 | if (n == 0) { | |
1780 | log_error("Got zero-length cgroups agent message, ignoring."); | |
1781 | return 0; | |
1782 | } | |
1783 | if ((size_t) n >= sizeof(buf)) { | |
1784 | log_error("Got overly long cgroups agent message, ignoring."); | |
1785 | return 0; | |
1786 | } | |
1787 | ||
1788 | if (memchr(buf, 0, n)) { | |
1789 | log_error("Got cgroups agent message with embedded NUL byte, ignoring."); | |
1790 | return 0; | |
1791 | } | |
1792 | buf[n] = 0; | |
1793 | ||
1794 | manager_notify_cgroup_empty(m, buf); | |
d5f15326 | 1795 | (void) bus_forward_agent_released(m, buf); |
d8fdc620 LP |
1796 | |
1797 | return 0; | |
1798 | } | |
1799 | ||
8523bf7d | 1800 | static void manager_invoke_notify_message(Manager *m, Unit *u, pid_t pid, const char *buf, FDSet *fds) { |
5ba6985b LP |
1801 | _cleanup_strv_free_ char **tags = NULL; |
1802 | ||
1803 | assert(m); | |
1804 | assert(u); | |
1805 | assert(buf); | |
5ba6985b LP |
1806 | |
1807 | tags = strv_split(buf, "\n\r"); | |
1808 | if (!tags) { | |
1809 | log_oom(); | |
1810 | return; | |
1811 | } | |
1812 | ||
5ba6985b | 1813 | if (UNIT_VTABLE(u)->notify_message) |
a354329f | 1814 | UNIT_VTABLE(u)->notify_message(u, pid, tags, fds); |
a86b7675 ZJS |
1815 | else if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
1816 | _cleanup_free_ char *x = NULL, *y = NULL; | |
1817 | ||
1818 | x = cescape(buf); | |
1819 | if (x) | |
1820 | y = ellipsize(x, 20, 90); | |
1821 | log_unit_debug(u, "Got notification message \"%s\", ignoring.", strnull(y)); | |
1822 | } | |
5ba6985b LP |
1823 | } |
1824 | ||
718db961 | 1825 | static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
3d0b8a55 | 1826 | |
b215b0ed | 1827 | _cleanup_fdset_free_ FDSet *fds = NULL; |
718db961 | 1828 | Manager *m = userdata; |
b215b0ed DH |
1829 | char buf[NOTIFY_BUFFER_MAX+1]; |
1830 | struct iovec iovec = { | |
1831 | .iov_base = buf, | |
1832 | .iov_len = sizeof(buf)-1, | |
1833 | }; | |
1834 | union { | |
1835 | struct cmsghdr cmsghdr; | |
1836 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) + | |
1837 | CMSG_SPACE(sizeof(int) * NOTIFY_FD_MAX)]; | |
1838 | } control = {}; | |
1839 | struct msghdr msghdr = { | |
1840 | .msg_iov = &iovec, | |
1841 | .msg_iovlen = 1, | |
1842 | .msg_control = &control, | |
1843 | .msg_controllen = sizeof(control), | |
1844 | }; | |
1845 | ||
1846 | struct cmsghdr *cmsg; | |
1847 | struct ucred *ucred = NULL; | |
b215b0ed DH |
1848 | Unit *u1, *u2, *u3; |
1849 | int r, *fd_array = NULL; | |
1850 | unsigned n_fds = 0; | |
8c47c732 LP |
1851 | ssize_t n; |
1852 | ||
1853 | assert(m); | |
718db961 LP |
1854 | assert(m->notify_fd == fd); |
1855 | ||
1856 | if (revents != EPOLLIN) { | |
1857 | log_warning("Got unexpected poll event for notify fd."); | |
1858 | return 0; | |
1859 | } | |
8c47c732 | 1860 | |
045a3d59 | 1861 | n = recvmsg(m->notify_fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC|MSG_TRUNC); |
b215b0ed | 1862 | if (n < 0) { |
c55ae51e LP |
1863 | if (IN_SET(errno, EAGAIN, EINTR)) |
1864 | return 0; /* Spurious wakeup, try again */ | |
8c47c732 | 1865 | |
c55ae51e LP |
1866 | /* If this is any other, real error, then let's stop processing this socket. This of course means we |
1867 | * won't take notification messages anymore, but that's still better than busy looping around this: | |
1868 | * being woken up over and over again but being unable to actually read the message off the socket. */ | |
1869 | return log_error_errno(errno, "Failed to receive notification message: %m"); | |
b215b0ed | 1870 | } |
a354329f | 1871 | |
b215b0ed DH |
1872 | CMSG_FOREACH(cmsg, &msghdr) { |
1873 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { | |
a354329f | 1874 | |
b215b0ed DH |
1875 | fd_array = (int*) CMSG_DATA(cmsg); |
1876 | n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int); | |
a354329f | 1877 | |
b215b0ed DH |
1878 | } else if (cmsg->cmsg_level == SOL_SOCKET && |
1879 | cmsg->cmsg_type == SCM_CREDENTIALS && | |
1880 | cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred))) { | |
a354329f | 1881 | |
b215b0ed | 1882 | ucred = (struct ucred*) CMSG_DATA(cmsg); |
a354329f | 1883 | } |
b215b0ed | 1884 | } |
a354329f | 1885 | |
b215b0ed DH |
1886 | if (n_fds > 0) { |
1887 | assert(fd_array); | |
a354329f | 1888 | |
b215b0ed DH |
1889 | r = fdset_new_array(&fds, fd_array, n_fds); |
1890 | if (r < 0) { | |
1891 | close_many(fd_array, n_fds); | |
9987750e FB |
1892 | log_oom(); |
1893 | return 0; | |
a354329f | 1894 | } |
b215b0ed | 1895 | } |
8c47c732 | 1896 | |
b215b0ed DH |
1897 | if (!ucred || ucred->pid <= 0) { |
1898 | log_warning("Received notify message without valid credentials. Ignoring."); | |
1899 | return 0; | |
1900 | } | |
8c47c732 | 1901 | |
045a3d59 | 1902 | if ((size_t) n >= sizeof(buf) || (msghdr.msg_flags & MSG_TRUNC)) { |
b215b0ed DH |
1903 | log_warning("Received notify message exceeded maximum size. Ignoring."); |
1904 | return 0; | |
1905 | } | |
8c47c732 | 1906 | |
875ca88d LP |
1907 | /* As extra safety check, let's make sure the string we get doesn't contain embedded NUL bytes. We permit one |
1908 | * trailing NUL byte in the message, but don't expect it. */ | |
1909 | if (n > 1 && memchr(buf, 0, n-1)) { | |
1910 | log_warning("Received notify message with embedded NUL bytes. Ignoring."); | |
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | /* Make sure it's NUL-terminated. */ | |
b215b0ed | 1915 | buf[n] = 0; |
8c47c732 | 1916 | |
b215b0ed DH |
1917 | /* Notify every unit that might be interested, but try |
1918 | * to avoid notifying the same one multiple times. */ | |
1919 | u1 = manager_get_unit_by_pid_cgroup(m, ucred->pid); | |
c4bee3c4 | 1920 | if (u1) |
8523bf7d | 1921 | manager_invoke_notify_message(m, u1, ucred->pid, buf, fds); |
5ba6985b | 1922 | |
b215b0ed | 1923 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1924 | if (u2 && u2 != u1) |
8523bf7d | 1925 | manager_invoke_notify_message(m, u2, ucred->pid, buf, fds); |
5ba6985b | 1926 | |
b215b0ed | 1927 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(ucred->pid)); |
c4bee3c4 | 1928 | if (u3 && u3 != u2 && u3 != u1) |
8523bf7d | 1929 | manager_invoke_notify_message(m, u3, ucred->pid, buf, fds); |
8c47c732 | 1930 | |
c4bee3c4 | 1931 | if (!u1 && !u2 && !u3) |
b215b0ed | 1932 | log_warning("Cannot find unit for notify message of PID "PID_FMT".", ucred->pid); |
a354329f | 1933 | |
b215b0ed | 1934 | if (fdset_size(fds) > 0) |
5fd2c135 | 1935 | log_warning("Got extra auxiliary fds with notification message, closing them."); |
8c47c732 LP |
1936 | |
1937 | return 0; | |
1938 | } | |
1939 | ||
96d66d89 | 1940 | static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) { |
36f20ae3 KW |
1941 | uint64_t iteration; |
1942 | ||
5ba6985b LP |
1943 | assert(m); |
1944 | assert(u); | |
1945 | assert(si); | |
1946 | ||
36f20ae3 KW |
1947 | sd_event_get_iteration(m->event, &iteration); |
1948 | ||
f2341e0a | 1949 | log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id); |
5ba6985b LP |
1950 | |
1951 | unit_unwatch_pid(u, si->si_pid); | |
e57051f5 | 1952 | |
36f20ae3 | 1953 | if (UNIT_VTABLE(u)->sigchld_event) { |
ccc2c98e LN |
1954 | if (set_size(u->pids) <= 1 || |
1955 | iteration != u->sigchldgen || | |
1956 | unit_main_pid(u) == si->si_pid || | |
1957 | unit_control_pid(u) == si->si_pid) { | |
36f20ae3 KW |
1958 | UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status); |
1959 | u->sigchldgen = iteration; | |
1960 | } else | |
1e706c8d | 1961 | log_debug("%s already issued a sigchld this iteration %" PRIu64 ", skipping. Pids still being watched %d", u->id, iteration, set_size(u->pids)); |
36f20ae3 | 1962 | } |
5ba6985b LP |
1963 | } |
1964 | ||
034c6ed7 | 1965 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1966 | assert(m); |
1967 | ||
1968 | for (;;) { | |
b92bea5d | 1969 | siginfo_t si = {}; |
9152c765 | 1970 | |
4112df16 LP |
1971 | /* First we call waitd() for a PID and do not reap the |
1972 | * zombie. That way we can still access /proc/$PID for | |
1973 | * it while it is a zombie. */ | |
1974 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1975 | |
1976 | if (errno == ECHILD) | |
1977 | break; | |
1978 | ||
4112df16 LP |
1979 | if (errno == EINTR) |
1980 | continue; | |
1981 | ||
9152c765 | 1982 | return -errno; |
acbb0225 | 1983 | } |
9152c765 | 1984 | |
4112df16 | 1985 | if (si.si_pid <= 0) |
9152c765 LP |
1986 | break; |
1987 | ||
15d5d9d9 | 1988 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
7fd1b19b | 1989 | _cleanup_free_ char *name = NULL; |
70af4d17 | 1990 | Unit *u1, *u2, *u3; |
4112df16 | 1991 | |
87d2c1ff | 1992 | get_process_comm(si.si_pid, &name); |
4112df16 | 1993 | |
5ba6985b LP |
1994 | log_debug("Child "PID_FMT" (%s) died (code=%s, status=%i/%s)", |
1995 | si.si_pid, strna(name), | |
1996 | sigchld_code_to_string(si.si_code), | |
1997 | si.si_status, | |
1998 | strna(si.si_code == CLD_EXITED | |
1999 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2000 | : signal_to_string(si.si_status))); | |
2001 | ||
2002 | /* And now figure out the unit this belongs | |
2003 | * to, it might be multiple... */ | |
b3ac818b | 2004 | u1 = manager_get_unit_by_pid_cgroup(m, si.si_pid); |
70af4d17 LP |
2005 | if (u1) |
2006 | invoke_sigchld_event(m, u1, &si); | |
fea72cc0 | 2007 | u2 = hashmap_get(m->watch_pids1, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
2008 | if (u2 && u2 != u1) |
2009 | invoke_sigchld_event(m, u2, &si); | |
fea72cc0 | 2010 | u3 = hashmap_get(m->watch_pids2, PID_TO_PTR(si.si_pid)); |
70af4d17 LP |
2011 | if (u3 && u3 != u2 && u3 != u1) |
2012 | invoke_sigchld_event(m, u3, &si); | |
5ba6985b | 2013 | } |
8c47c732 | 2014 | |
4112df16 LP |
2015 | /* And now, we actually reap the zombie. */ |
2016 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2017 | if (errno == EINTR) | |
2018 | continue; | |
2019 | ||
2020 | return -errno; | |
2021 | } | |
9152c765 LP |
2022 | } |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | ||
c75fbada | 2027 | static void manager_start_target(Manager *m, const char *name, JobMode mode) { |
4afd3348 | 2028 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
28247076 | 2029 | int r; |
398ef8ba | 2030 | |
f2341e0a | 2031 | log_debug("Activating special unit %s", name); |
1e001f52 | 2032 | |
4bd29fe5 | 2033 | r = manager_add_job_by_name(m, JOB_START, name, mode, &error, NULL); |
bd0af849 | 2034 | if (r < 0) |
f2341e0a | 2035 | log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r)); |
28247076 LP |
2036 | } |
2037 | ||
24dd31c1 LN |
2038 | static void manager_handle_ctrl_alt_del(Manager *m) { |
2039 | /* If the user presses C-A-D more than | |
2040 | * 7 times within 2s, we reboot/shutdown immediately, | |
2041 | * unless it was disabled in system.conf */ | |
2042 | ||
ae8c7939 | 2043 | if (ratelimit_test(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE) |
24dd31c1 | 2044 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY); |
ae8c7939 LN |
2045 | else |
2046 | emergency_action(m, m->cad_burst_action, NULL, | |
2047 | "Ctrl-Alt-Del was pressed more than 7 times within 2s"); | |
24dd31c1 LN |
2048 | } |
2049 | ||
718db961 LP |
2050 | static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2051 | Manager *m = userdata; | |
9152c765 LP |
2052 | ssize_t n; |
2053 | struct signalfd_siginfo sfsi; | |
2054 | bool sigchld = false; | |
dacd6cee | 2055 | int r; |
9152c765 LP |
2056 | |
2057 | assert(m); | |
718db961 LP |
2058 | assert(m->signal_fd == fd); |
2059 | ||
2060 | if (revents != EPOLLIN) { | |
2061 | log_warning("Got unexpected events from signal file descriptor."); | |
2062 | return 0; | |
2063 | } | |
9152c765 LP |
2064 | |
2065 | for (;;) { | |
718db961 | 2066 | n = read(m->signal_fd, &sfsi, sizeof(sfsi)); |
57cb4adf | 2067 | if (n != sizeof(sfsi)) { |
8f4d6401 ZJS |
2068 | if (n >= 0) { |
2069 | log_warning("Truncated read from signal fd (%zu bytes)!", n); | |
2070 | return 0; | |
2071 | } | |
9152c765 | 2072 | |
8f4d6401 | 2073 | if (IN_SET(errno, EINTR, EAGAIN)) |
acbb0225 | 2074 | break; |
9152c765 | 2075 | |
8f4d6401 ZJS |
2076 | /* We return an error here, which will kill this handler, |
2077 | * to avoid a busy loop on read error. */ | |
2078 | return log_error_errno(errno, "Reading from signal fd failed: %m"); | |
9152c765 LP |
2079 | } |
2080 | ||
4daf54a8 | 2081 | log_received_signal(sfsi.ssi_signo == SIGCHLD || |
463d0d15 | 2082 | (sfsi.ssi_signo == SIGTERM && MANAGER_IS_USER(m)) |
4daf54a8 ZJS |
2083 | ? LOG_DEBUG : LOG_INFO, |
2084 | &sfsi); | |
1e001f52 | 2085 | |
b9cd2ec1 LP |
2086 | switch (sfsi.ssi_signo) { |
2087 | ||
4112df16 | 2088 | case SIGCHLD: |
9152c765 | 2089 | sigchld = true; |
b9cd2ec1 LP |
2090 | break; |
2091 | ||
6632c602 | 2092 | case SIGTERM: |
463d0d15 | 2093 | if (MANAGER_IS_SYSTEM(m)) { |
db06e3b6 LP |
2094 | /* This is for compatibility with the |
2095 | * original sysvinit */ | |
ae57dad3 LP |
2096 | r = verify_run_space_and_log("Refusing to reexecute"); |
2097 | if (r >= 0) | |
2098 | m->exit_code = MANAGER_REEXECUTE; | |
a1b256b0 LP |
2099 | break; |
2100 | } | |
84e9af1e | 2101 | |
a1b256b0 | 2102 | /* Fall through */ |
e11dc4a2 LP |
2103 | |
2104 | case SIGINT: | |
c75fbada | 2105 | if (MANAGER_IS_SYSTEM(m)) |
24dd31c1 | 2106 | manager_handle_ctrl_alt_del(m); |
c75fbada | 2107 | else |
d60cb656 AJ |
2108 | manager_start_target(m, SPECIAL_EXIT_TARGET, |
2109 | JOB_REPLACE_IRREVERSIBLY); | |
a1b256b0 | 2110 | break; |
84e9af1e | 2111 | |
28247076 | 2112 | case SIGWINCH: |
463d0d15 | 2113 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 2114 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2115 | |
28247076 LP |
2116 | /* This is a nop on non-init */ |
2117 | break; | |
84e9af1e | 2118 | |
28247076 | 2119 | case SIGPWR: |
463d0d15 | 2120 | if (MANAGER_IS_SYSTEM(m)) |
7d793605 | 2121 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 2122 | |
28247076 | 2123 | /* This is a nop on non-init */ |
84e9af1e | 2124 | break; |
6632c602 | 2125 | |
1005d14f | 2126 | case SIGUSR1: { |
57ee42ce LP |
2127 | Unit *u; |
2128 | ||
2129 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2130 | ||
2131 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2132 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2133 | bus_init(m, true); |
57ee42ce LP |
2134 | } |
2135 | ||
2136 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2137 | log_info("Loading D-Bus service..."); | |
7d793605 | 2138 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2139 | } |
2140 | ||
2141 | break; | |
2142 | } | |
2143 | ||
2149e37c | 2144 | case SIGUSR2: { |
718db961 LP |
2145 | _cleanup_free_ char *dump = NULL; |
2146 | _cleanup_fclose_ FILE *f = NULL; | |
2149e37c LP |
2147 | size_t size; |
2148 | ||
718db961 LP |
2149 | f = open_memstream(&dump, &size); |
2150 | if (!f) { | |
dacd6cee | 2151 | log_warning_errno(errno, "Failed to allocate memory stream: %m"); |
2149e37c LP |
2152 | break; |
2153 | } | |
2154 | ||
2155 | manager_dump_units(m, f, "\t"); | |
2156 | manager_dump_jobs(m, f, "\t"); | |
2157 | ||
dacd6cee LP |
2158 | r = fflush_and_check(f); |
2159 | if (r < 0) { | |
2160 | log_warning_errno(r, "Failed to write status stream: %m"); | |
b2cdc666 DM |
2161 | break; |
2162 | } | |
2163 | ||
2149e37c | 2164 | log_dump(LOG_INFO, dump); |
1005d14f | 2165 | break; |
2149e37c | 2166 | } |
1005d14f | 2167 | |
a16e1123 | 2168 | case SIGHUP: |
ae57dad3 LP |
2169 | r = verify_run_space_and_log("Refusing to reload"); |
2170 | if (r >= 0) | |
2171 | m->exit_code = MANAGER_RELOAD; | |
a16e1123 LP |
2172 | break; |
2173 | ||
7d793605 | 2174 | default: { |
253ee27a | 2175 | |
0003d1ab | 2176 | /* Starting SIGRTMIN+0 */ |
d60cb656 AJ |
2177 | static const struct { |
2178 | const char *target; | |
2179 | JobMode mode; | |
2180 | } target_table[] = { | |
2181 | [0] = { SPECIAL_DEFAULT_TARGET, JOB_ISOLATE }, | |
2182 | [1] = { SPECIAL_RESCUE_TARGET, JOB_ISOLATE }, | |
2183 | [2] = { SPECIAL_EMERGENCY_TARGET, JOB_ISOLATE }, | |
2184 | [3] = { SPECIAL_HALT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2185 | [4] = { SPECIAL_POWEROFF_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2186 | [5] = { SPECIAL_REBOOT_TARGET, JOB_REPLACE_IRREVERSIBLY }, | |
2187 | [6] = { SPECIAL_KEXEC_TARGET, JOB_REPLACE_IRREVERSIBLY } | |
0003d1ab LP |
2188 | }; |
2189 | ||
2190 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2191 | static const ManagerExitCode code_table[] = { | |
2192 | [0] = MANAGER_HALT, | |
2193 | [1] = MANAGER_POWEROFF, | |
2194 | [2] = MANAGER_REBOOT, | |
2195 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2196 | }; |
2197 | ||
2198 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 2199 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f | 2200 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
d60cb656 AJ |
2201 | manager_start_target(m, target_table[idx].target, |
2202 | target_table[idx].mode); | |
7d793605 LP |
2203 | break; |
2204 | } | |
2205 | ||
0003d1ab LP |
2206 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2207 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2208 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2209 | break; | |
2210 | } | |
2211 | ||
0658666b LP |
2212 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2213 | ||
2214 | case 20: | |
d450b6f2 | 2215 | manager_set_show_status(m, SHOW_STATUS_YES); |
0658666b LP |
2216 | break; |
2217 | ||
2218 | case 21: | |
d450b6f2 | 2219 | manager_set_show_status(m, SHOW_STATUS_NO); |
0658666b LP |
2220 | break; |
2221 | ||
253ee27a LP |
2222 | case 22: |
2223 | log_set_max_level(LOG_DEBUG); | |
4cee3a78 | 2224 | log_info("Setting log level to debug."); |
253ee27a LP |
2225 | break; |
2226 | ||
2227 | case 23: | |
2228 | log_set_max_level(LOG_INFO); | |
4cee3a78 | 2229 | log_info("Setting log level to info."); |
253ee27a LP |
2230 | break; |
2231 | ||
600b704e | 2232 | case 24: |
463d0d15 | 2233 | if (MANAGER_IS_USER(m)) { |
600b704e LP |
2234 | m->exit_code = MANAGER_EXIT; |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | /* This is a nop on init */ | |
2239 | break; | |
2240 | ||
4cfa2c99 | 2241 | case 26: |
c1dc6153 | 2242 | case 29: /* compatibility: used to be mapped to LOG_TARGET_SYSLOG_OR_KMSG */ |
4cfa2c99 LP |
2243 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); |
2244 | log_notice("Setting log target to journal-or-kmsg."); | |
2245 | break; | |
2246 | ||
253ee27a LP |
2247 | case 27: |
2248 | log_set_target(LOG_TARGET_CONSOLE); | |
2249 | log_notice("Setting log target to console."); | |
2250 | break; | |
2251 | ||
2252 | case 28: | |
2253 | log_set_target(LOG_TARGET_KMSG); | |
2254 | log_notice("Setting log target to kmsg."); | |
2255 | break; | |
2256 | ||
0658666b | 2257 | default: |
4e240ab0 | 2258 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 2259 | } |
b9cd2ec1 | 2260 | } |
7d793605 | 2261 | } |
9152c765 LP |
2262 | } |
2263 | ||
2264 | if (sigchld) | |
7b77ed8c | 2265 | manager_dispatch_sigchld(m); |
034c6ed7 LP |
2266 | |
2267 | return 0; | |
2268 | } | |
2269 | ||
718db961 LP |
2270 | static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2271 | Manager *m = userdata; | |
2272 | Iterator i; | |
2273 | Unit *u; | |
034c6ed7 LP |
2274 | |
2275 | assert(m); | |
718db961 | 2276 | assert(m->time_change_fd == fd); |
034c6ed7 | 2277 | |
a80c1575 | 2278 | log_struct(LOG_DEBUG, |
2b044526 | 2279 | "MESSAGE_ID=" SD_MESSAGE_TIME_CHANGE_STR, |
e2cc6eca | 2280 | LOG_MESSAGE("Time has been changed"), |
718db961 | 2281 | NULL); |
034c6ed7 | 2282 | |
718db961 LP |
2283 | /* Restart the watch */ |
2284 | m->time_change_event_source = sd_event_source_unref(m->time_change_event_source); | |
03e334a1 | 2285 | m->time_change_fd = safe_close(m->time_change_fd); |
ef734fd6 | 2286 | |
718db961 | 2287 | manager_setup_time_change(m); |
4e434314 | 2288 | |
718db961 LP |
2289 | HASHMAP_FOREACH(u, m->units, i) |
2290 | if (UNIT_VTABLE(u)->time_change) | |
2291 | UNIT_VTABLE(u)->time_change(u); | |
ea430986 | 2292 | |
718db961 LP |
2293 | return 0; |
2294 | } | |
ea430986 | 2295 | |
718db961 LP |
2296 | static int manager_dispatch_idle_pipe_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2297 | Manager *m = userdata; | |
8742514c | 2298 | |
718db961 LP |
2299 | assert(m); |
2300 | assert(m->idle_pipe[2] == fd); | |
8742514c | 2301 | |
718db961 | 2302 | m->no_console_output = m->n_on_console > 0; |
03b717a3 | 2303 | |
718db961 | 2304 | manager_close_idle_pipe(m); |
03b717a3 | 2305 | |
718db961 LP |
2306 | return 0; |
2307 | } | |
31a7eb86 | 2308 | |
718db961 LP |
2309 | static int manager_dispatch_jobs_in_progress(sd_event_source *source, usec_t usec, void *userdata) { |
2310 | Manager *m = userdata; | |
fd08a840 ZJS |
2311 | int r; |
2312 | uint64_t next; | |
31a7eb86 | 2313 | |
718db961 | 2314 | assert(m); |
fd08a840 | 2315 | assert(source); |
9152c765 | 2316 | |
718db961 | 2317 | manager_print_jobs_in_progress(m); |
fd08a840 ZJS |
2318 | |
2319 | next = now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_PERIOD_USEC; | |
2320 | r = sd_event_source_set_time(source, next); | |
2321 | if (r < 0) | |
2322 | return r; | |
2323 | ||
2324 | return sd_event_source_set_enabled(source, SD_EVENT_ONESHOT); | |
9152c765 LP |
2325 | } |
2326 | ||
2327 | int manager_loop(Manager *m) { | |
2328 | int r; | |
9152c765 | 2329 | |
fac9f8df | 2330 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2331 | |
9152c765 | 2332 | assert(m); |
f755e3b7 | 2333 | m->exit_code = MANAGER_OK; |
9152c765 | 2334 | |
fe51822e | 2335 | /* Release the path cache */ |
97044145 | 2336 | m->unit_path_cache = set_free_free(m->unit_path_cache); |
fe51822e | 2337 | |
b0c918b9 LP |
2338 | manager_check_finished(m); |
2339 | ||
a4312405 | 2340 | /* There might still be some zombies hanging around from |
f3669545 | 2341 | * before we were exec()'ed. Let's reap them. */ |
e96d6be7 LP |
2342 | r = manager_dispatch_sigchld(m); |
2343 | if (r < 0) | |
a4312405 LP |
2344 | return r; |
2345 | ||
f755e3b7 | 2346 | while (m->exit_code == MANAGER_OK) { |
718db961 | 2347 | usec_t wait_usec; |
9152c765 | 2348 | |
463d0d15 | 2349 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) |
e96d6be7 LP |
2350 | watchdog_ping(); |
2351 | ||
ea430986 LP |
2352 | if (!ratelimit_test(&rl)) { |
2353 | /* Yay, something is going seriously wrong, pause a little */ | |
2354 | log_warning("Looping too fast. Throttling execution a little."); | |
2355 | sleep(1); | |
2356 | } | |
2357 | ||
37a8e683 | 2358 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2359 | continue; |
2360 | ||
c5a97ed1 LP |
2361 | if (manager_dispatch_gc_job_queue(m) > 0) |
2362 | continue; | |
2363 | ||
2364 | if (manager_dispatch_gc_unit_queue(m) > 0) | |
701cc384 LP |
2365 | continue; |
2366 | ||
cf1265e1 | 2367 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e | 2368 | continue; |
034c6ed7 | 2369 | |
cf1265e1 | 2370 | if (manager_dispatch_cgroup_queue(m) > 0) |
c1e1601e LP |
2371 | continue; |
2372 | ||
c1e1601e | 2373 | if (manager_dispatch_dbus_queue(m) > 0) |
ea430986 | 2374 | continue; |
ea430986 | 2375 | |
c757a65b | 2376 | /* Sleep for half the watchdog time */ |
463d0d15 | 2377 | if (m->runtime_watchdog > 0 && m->runtime_watchdog != USEC_INFINITY && MANAGER_IS_SYSTEM(m)) { |
718db961 LP |
2378 | wait_usec = m->runtime_watchdog / 2; |
2379 | if (wait_usec <= 0) | |
2380 | wait_usec = 1; | |
c757a65b | 2381 | } else |
3a43da28 | 2382 | wait_usec = USEC_INFINITY; |
9152c765 | 2383 | |
718db961 | 2384 | r = sd_event_run(m->event, wait_usec); |
23bbb0de MS |
2385 | if (r < 0) |
2386 | return log_error_errno(r, "Failed to run event loop: %m"); | |
a16e1123 | 2387 | } |
957ca890 | 2388 | |
a16e1123 | 2389 | return m->exit_code; |
83c60c9f | 2390 | } |
ea430986 | 2391 | |
718db961 | 2392 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u) { |
ede3a796 | 2393 | _cleanup_free_ char *n = NULL; |
4b58153d | 2394 | sd_id128_t invocation_id; |
ea430986 | 2395 | Unit *u; |
80fbf05e | 2396 | int r; |
ea430986 LP |
2397 | |
2398 | assert(m); | |
2399 | assert(s); | |
2400 | assert(_u); | |
2401 | ||
ede3a796 LP |
2402 | r = unit_name_from_dbus_path(s, &n); |
2403 | if (r < 0) | |
2404 | return r; | |
ea430986 | 2405 | |
4b58153d LP |
2406 | /* Permit addressing units by invocation ID: if the passed bus path is suffixed by a 128bit ID then we use it |
2407 | * as invocation ID. */ | |
2408 | r = sd_id128_from_string(n, &invocation_id); | |
2409 | if (r >= 0) { | |
2410 | u = hashmap_get(m->units_by_invocation_id, &invocation_id); | |
2411 | if (u) { | |
2412 | *_u = u; | |
2413 | return 0; | |
2414 | } | |
2415 | ||
2416 | return sd_bus_error_setf(e, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", SD_ID128_FORMAT_VAL(invocation_id)); | |
2417 | } | |
2418 | ||
00c83b43 LP |
2419 | /* If this didn't work, we check if this is a unit name */ |
2420 | if (!unit_name_is_valid(n, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) | |
2421 | return sd_bus_error_setf(e, SD_BUS_ERROR_INVALID_ARGS, "Unit name %s is neither a valid invocation ID nor unit name.", n); | |
2422 | ||
80fbf05e | 2423 | r = manager_load_unit(m, n, NULL, e, &u); |
80fbf05e MS |
2424 | if (r < 0) |
2425 | return r; | |
ea430986 LP |
2426 | |
2427 | *_u = u; | |
ea430986 LP |
2428 | return 0; |
2429 | } | |
86fbf370 LP |
2430 | |
2431 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
718db961 | 2432 | const char *p; |
86fbf370 | 2433 | unsigned id; |
718db961 | 2434 | Job *j; |
86fbf370 LP |
2435 | int r; |
2436 | ||
2437 | assert(m); | |
2438 | assert(s); | |
2439 | assert(_j); | |
2440 | ||
718db961 LP |
2441 | p = startswith(s, "/org/freedesktop/systemd1/job/"); |
2442 | if (!p) | |
86fbf370 LP |
2443 | return -EINVAL; |
2444 | ||
718db961 | 2445 | r = safe_atou(p, &id); |
8742514c | 2446 | if (r < 0) |
86fbf370 LP |
2447 | return r; |
2448 | ||
8742514c LP |
2449 | j = manager_get_job(m, id); |
2450 | if (!j) | |
86fbf370 LP |
2451 | return -ENOENT; |
2452 | ||
2453 | *_j = j; | |
2454 | ||
2455 | return 0; | |
2456 | } | |
dfcd764e | 2457 | |
4927fcae | 2458 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2459 | |
4927fcae | 2460 | #ifdef HAVE_AUDIT |
2ba11090 | 2461 | _cleanup_free_ char *p = NULL; |
0aa281df | 2462 | const char *msg; |
7410616c | 2463 | int audit_fd, r; |
e537352b | 2464 | |
463d0d15 | 2465 | if (!MANAGER_IS_SYSTEM(m)) |
a1a078ee LP |
2466 | return; |
2467 | ||
c1165f82 LP |
2468 | audit_fd = get_audit_fd(); |
2469 | if (audit_fd < 0) | |
e537352b LP |
2470 | return; |
2471 | ||
bbd3a7ba LP |
2472 | /* Don't generate audit events if the service was already |
2473 | * started and we're just deserializing */ | |
2c289ea8 | 2474 | if (MANAGER_IS_RELOADING(m)) |
bbd3a7ba LP |
2475 | return; |
2476 | ||
ac155bb8 | 2477 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
2478 | return; |
2479 | ||
7410616c LP |
2480 | r = unit_name_to_prefix_and_instance(u->id, &p); |
2481 | if (r < 0) { | |
2482 | log_error_errno(r, "Failed to extract prefix and instance of unit name: %m"); | |
e537352b LP |
2483 | return; |
2484 | } | |
2485 | ||
63c372cb | 2486 | msg = strjoina("unit=", p); |
0aa281df LP |
2487 | if (audit_log_user_comm_message(audit_fd, type, msg, "systemd", NULL, NULL, NULL, success) < 0) { |
2488 | if (errno == EPERM) | |
391ade86 | 2489 | /* We aren't allowed to send audit messages? |
44785992 | 2490 | * Then let's not retry again. */ |
c1165f82 | 2491 | close_audit_fd(); |
0aa281df | 2492 | else |
56f64d95 | 2493 | log_warning_errno(errno, "Failed to send audit message: %m"); |
391ade86 | 2494 | } |
4927fcae | 2495 | #endif |
e537352b | 2496 | |
e537352b LP |
2497 | } |
2498 | ||
e983b760 | 2499 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
fc2fffe7 | 2500 | static const union sockaddr_union sa = PLYMOUTH_SOCKET; |
2ba11090 ZJS |
2501 | _cleanup_free_ char *message = NULL; |
2502 | _cleanup_close_ int fd = -1; | |
fc2fffe7 | 2503 | int n = 0; |
e983b760 LP |
2504 | |
2505 | /* Don't generate plymouth events if the service was already | |
2506 | * started and we're just deserializing */ | |
2c289ea8 | 2507 | if (MANAGER_IS_RELOADING(m)) |
e983b760 LP |
2508 | return; |
2509 | ||
463d0d15 | 2510 | if (!MANAGER_IS_SYSTEM(m)) |
e983b760 LP |
2511 | return; |
2512 | ||
75f86906 | 2513 | if (detect_container() > 0) |
3772995a LP |
2514 | return; |
2515 | ||
ac155bb8 MS |
2516 | if (u->type != UNIT_SERVICE && |
2517 | u->type != UNIT_MOUNT && | |
2518 | u->type != UNIT_SWAP) | |
e983b760 LP |
2519 | return; |
2520 | ||
2521 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2522 | * message then wait for plymouth */ | |
e62d8c39 ZJS |
2523 | fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
2524 | if (fd < 0) { | |
56f64d95 | 2525 | log_error_errno(errno, "socket() failed: %m"); |
e983b760 LP |
2526 | return; |
2527 | } | |
2528 | ||
fc2fffe7 | 2529 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)) < 0) { |
e983b760 | 2530 | |
2ba11090 | 2531 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) |
56f64d95 | 2532 | log_error_errno(errno, "connect() failed: %m"); |
2ba11090 | 2533 | return; |
e983b760 LP |
2534 | } |
2535 | ||
ac155bb8 | 2536 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 2537 | log_oom(); |
2ba11090 | 2538 | return; |
e983b760 LP |
2539 | } |
2540 | ||
2541 | errno = 0; | |
2ba11090 ZJS |
2542 | if (write(fd, message, n + 1) != n + 1) |
2543 | if (!IN_SET(errno, EPIPE, EAGAIN, ENOENT, ECONNREFUSED, ECONNRESET, ECONNABORTED)) | |
56f64d95 | 2544 | log_error_errno(errno, "Failed to write Plymouth message: %m"); |
e983b760 LP |
2545 | } |
2546 | ||
d8d5ab98 | 2547 | int manager_open_serialization(Manager *m, FILE **_f) { |
504afd7c | 2548 | int fd; |
a16e1123 LP |
2549 | FILE *f; |
2550 | ||
2551 | assert(_f); | |
2552 | ||
504afd7c ZJS |
2553 | fd = open_serialization_fd("systemd-state"); |
2554 | if (fd < 0) | |
2555 | return fd; | |
a16e1123 | 2556 | |
01e10de3 | 2557 | f = fdopen(fd, "w+"); |
d86f9d52 | 2558 | if (!f) { |
03e334a1 | 2559 | safe_close(fd); |
a16e1123 | 2560 | return -errno; |
d86f9d52 | 2561 | } |
a16e1123 LP |
2562 | |
2563 | *_f = f; | |
a16e1123 LP |
2564 | return 0; |
2565 | } | |
2566 | ||
b3680f49 | 2567 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root) { |
a16e1123 LP |
2568 | Iterator i; |
2569 | Unit *u; | |
2570 | const char *t; | |
2571 | int r; | |
2572 | ||
2573 | assert(m); | |
2574 | assert(f); | |
2575 | assert(fds); | |
2576 | ||
313cefa1 | 2577 | m->n_reloading++; |
38c52d46 | 2578 | |
1fa2f38f | 2579 | fprintf(f, "current-job-id=%"PRIu32"\n", m->current_job_id); |
01d67b43 | 2580 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); |
33c5fae9 LP |
2581 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
2582 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 2583 | |
915b3753 | 2584 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
915b3753 | 2585 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); |
718db961 | 2586 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); |
e9ddabc2 | 2587 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 2588 | |
26a1efdf | 2589 | if (!in_initrd()) { |
915b3753 | 2590 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 | 2591 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
718db961 LP |
2592 | dual_timestamp_serialize(f, "security-start-timestamp", &m->security_start_timestamp); |
2593 | dual_timestamp_serialize(f, "security-finish-timestamp", &m->security_finish_timestamp); | |
2594 | dual_timestamp_serialize(f, "generators-start-timestamp", &m->generators_start_timestamp); | |
2595 | dual_timestamp_serialize(f, "generators-finish-timestamp", &m->generators_finish_timestamp); | |
2596 | dual_timestamp_serialize(f, "units-load-start-timestamp", &m->units_load_start_timestamp); | |
2597 | dual_timestamp_serialize(f, "units-load-finish-timestamp", &m->units_load_finish_timestamp); | |
f38ed060 | 2598 | } |
47a483a1 | 2599 | |
fe902fa4 ZJS |
2600 | if (!switching_root) |
2601 | (void) serialize_environment(f, m->environment); | |
4a9fd066 | 2602 | |
d86f9d52 LP |
2603 | if (m->notify_fd >= 0) { |
2604 | int copy; | |
2605 | ||
2606 | copy = fdset_put_dup(fds, m->notify_fd); | |
2607 | if (copy < 0) | |
2608 | return copy; | |
2609 | ||
2610 | fprintf(f, "notify-fd=%i\n", copy); | |
2611 | fprintf(f, "notify-socket=%s\n", m->notify_socket); | |
2612 | } | |
2613 | ||
d8fdc620 LP |
2614 | if (m->cgroups_agent_fd >= 0) { |
2615 | int copy; | |
2616 | ||
2617 | copy = fdset_put_dup(fds, m->cgroups_agent_fd); | |
2618 | if (copy < 0) | |
2619 | return copy; | |
2620 | ||
2621 | fprintf(f, "cgroups-agent-fd=%i\n", copy); | |
2622 | } | |
2623 | ||
00d9ef85 LP |
2624 | if (m->user_lookup_fds[0] >= 0) { |
2625 | int copy0, copy1; | |
2626 | ||
2627 | copy0 = fdset_put_dup(fds, m->user_lookup_fds[0]); | |
2628 | if (copy0 < 0) | |
2629 | return copy0; | |
2630 | ||
2631 | copy1 = fdset_put_dup(fds, m->user_lookup_fds[1]); | |
2632 | if (copy1 < 0) | |
2633 | return copy1; | |
2634 | ||
2635 | fprintf(f, "user-lookup=%i %i\n", copy0, copy1); | |
2636 | } | |
2637 | ||
05a98afd | 2638 | bus_track_serialize(m->subscribed, f, "subscribed"); |
6fa48533 | 2639 | |
29206d46 LP |
2640 | r = dynamic_user_serialize(m, f, fds); |
2641 | if (r < 0) | |
2642 | return r; | |
2643 | ||
00d9ef85 LP |
2644 | manager_serialize_uid_refs(m, f); |
2645 | manager_serialize_gid_refs(m, f); | |
2646 | ||
4b61c875 | 2647 | fputc_unlocked('\n', f); |
f2382a94 | 2648 | |
a16e1123 | 2649 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 2650 | if (u->id != t) |
a16e1123 LP |
2651 | continue; |
2652 | ||
a16e1123 | 2653 | /* Start marker */ |
4b61c875 LP |
2654 | fputs_unlocked(u->id, f); |
2655 | fputc_unlocked('\n', f); | |
a16e1123 | 2656 | |
6fa48533 LP |
2657 | r = unit_serialize(u, f, fds, !switching_root); |
2658 | if (r < 0) { | |
313cefa1 | 2659 | m->n_reloading--; |
a16e1123 | 2660 | return r; |
38c52d46 | 2661 | } |
a16e1123 LP |
2662 | } |
2663 | ||
a7556052 | 2664 | assert(m->n_reloading > 0); |
313cefa1 | 2665 | m->n_reloading--; |
38c52d46 | 2666 | |
a16e1123 LP |
2667 | if (ferror(f)) |
2668 | return -EIO; | |
2669 | ||
b23de6af LP |
2670 | r = bus_fdset_add_all(m, fds); |
2671 | if (r < 0) | |
2672 | return r; | |
2673 | ||
a16e1123 LP |
2674 | return 0; |
2675 | } | |
2676 | ||
2677 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2678 | int r = 0; | |
2679 | ||
2680 | assert(m); | |
2681 | assert(f); | |
2682 | ||
2683 | log_debug("Deserializing state..."); | |
2684 | ||
313cefa1 | 2685 | m->n_reloading++; |
82c64bf5 | 2686 | |
10f8e83c | 2687 | for (;;) { |
d233c99a ZJS |
2688 | char line[LINE_MAX]; |
2689 | const char *val, *l; | |
10f8e83c LP |
2690 | |
2691 | if (!fgets(line, sizeof(line), f)) { | |
2692 | if (feof(f)) | |
2693 | r = 0; | |
2694 | else | |
2695 | r = -errno; | |
2696 | ||
2697 | goto finish; | |
2698 | } | |
2699 | ||
2700 | char_array_0(line); | |
2701 | l = strstrip(line); | |
2702 | ||
2703 | if (l[0] == 0) | |
2704 | break; | |
2705 | ||
fb4650aa | 2706 | if ((val = startswith(l, "current-job-id="))) { |
01d67b43 LP |
2707 | uint32_t id; |
2708 | ||
fb4650aa | 2709 | if (safe_atou32(val, &id) < 0) |
62c460c6 | 2710 | log_notice("Failed to parse current job id value %s", val); |
01d67b43 LP |
2711 | else |
2712 | m->current_job_id = MAX(m->current_job_id, id); | |
718db961 | 2713 | |
fb4650aa | 2714 | } else if ((val = startswith(l, "n-installed-jobs="))) { |
33c5fae9 LP |
2715 | uint32_t n; |
2716 | ||
fb4650aa | 2717 | if (safe_atou32(val, &n) < 0) |
62c460c6 | 2718 | log_notice("Failed to parse installed jobs counter %s", val); |
33c5fae9 LP |
2719 | else |
2720 | m->n_installed_jobs += n; | |
718db961 | 2721 | |
fb4650aa | 2722 | } else if ((val = startswith(l, "n-failed-jobs="))) { |
33c5fae9 LP |
2723 | uint32_t n; |
2724 | ||
fb4650aa | 2725 | if (safe_atou32(val, &n) < 0) |
62c460c6 | 2726 | log_notice("Failed to parse failed jobs counter %s", val); |
33c5fae9 LP |
2727 | else |
2728 | m->n_failed_jobs += n; | |
718db961 | 2729 | |
fb4650aa | 2730 | } else if ((val = startswith(l, "taint-usr="))) { |
01d67b43 LP |
2731 | int b; |
2732 | ||
fb4650aa | 2733 | b = parse_boolean(val); |
e3dd987c | 2734 | if (b < 0) |
62c460c6 | 2735 | log_notice("Failed to parse taint /usr flag %s", val); |
01d67b43 LP |
2736 | else |
2737 | m->taint_usr = m->taint_usr || b; | |
718db961 | 2738 | |
fb4650aa ZJS |
2739 | } else if ((val = startswith(l, "firmware-timestamp="))) |
2740 | dual_timestamp_deserialize(val, &m->firmware_timestamp); | |
2741 | else if ((val = startswith(l, "loader-timestamp="))) | |
2742 | dual_timestamp_deserialize(val, &m->loader_timestamp); | |
2743 | else if ((val = startswith(l, "kernel-timestamp="))) | |
2744 | dual_timestamp_deserialize(val, &m->kernel_timestamp); | |
2745 | else if ((val = startswith(l, "initrd-timestamp="))) | |
2746 | dual_timestamp_deserialize(val, &m->initrd_timestamp); | |
2747 | else if ((val = startswith(l, "userspace-timestamp="))) | |
2748 | dual_timestamp_deserialize(val, &m->userspace_timestamp); | |
2749 | else if ((val = startswith(l, "finish-timestamp="))) | |
2750 | dual_timestamp_deserialize(val, &m->finish_timestamp); | |
2751 | else if ((val = startswith(l, "security-start-timestamp="))) | |
2752 | dual_timestamp_deserialize(val, &m->security_start_timestamp); | |
2753 | else if ((val = startswith(l, "security-finish-timestamp="))) | |
2754 | dual_timestamp_deserialize(val, &m->security_finish_timestamp); | |
2755 | else if ((val = startswith(l, "generators-start-timestamp="))) | |
2756 | dual_timestamp_deserialize(val, &m->generators_start_timestamp); | |
2757 | else if ((val = startswith(l, "generators-finish-timestamp="))) | |
2758 | dual_timestamp_deserialize(val, &m->generators_finish_timestamp); | |
2759 | else if ((val = startswith(l, "units-load-start-timestamp="))) | |
2760 | dual_timestamp_deserialize(val, &m->units_load_start_timestamp); | |
2761 | else if ((val = startswith(l, "units-load-finish-timestamp="))) | |
2762 | dual_timestamp_deserialize(val, &m->units_load_finish_timestamp); | |
4a9fd066 | 2763 | else if (startswith(l, "env=")) { |
fe902fa4 | 2764 | r = deserialize_environment(&m->environment, l); |
d233c99a ZJS |
2765 | if (r == -ENOMEM) |
2766 | goto finish; | |
527b7a42 | 2767 | if (r < 0) |
d233c99a | 2768 | log_notice_errno(r, "Failed to parse environment entry: \"%s\": %m", l); |
e3dd987c | 2769 | |
fb4650aa | 2770 | } else if ((val = startswith(l, "notify-fd="))) { |
d86f9d52 LP |
2771 | int fd; |
2772 | ||
fb4650aa | 2773 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
62c460c6 | 2774 | log_notice("Failed to parse notify fd: \"%s\"", val); |
d86f9d52 | 2775 | else { |
03e334a1 LP |
2776 | m->notify_event_source = sd_event_source_unref(m->notify_event_source); |
2777 | safe_close(m->notify_fd); | |
d86f9d52 LP |
2778 | m->notify_fd = fdset_remove(fds, fd); |
2779 | } | |
2780 | ||
fb4650aa | 2781 | } else if ((val = startswith(l, "notify-socket="))) { |
d86f9d52 LP |
2782 | char *n; |
2783 | ||
fb4650aa | 2784 | n = strdup(val); |
d86f9d52 LP |
2785 | if (!n) { |
2786 | r = -ENOMEM; | |
2787 | goto finish; | |
2788 | } | |
2789 | ||
2790 | free(m->notify_socket); | |
2791 | m->notify_socket = n; | |
2792 | ||
fb4650aa | 2793 | } else if ((val = startswith(l, "cgroups-agent-fd="))) { |
d8fdc620 LP |
2794 | int fd; |
2795 | ||
fb4650aa | 2796 | if (safe_atoi(val, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) |
62c460c6 | 2797 | log_notice("Failed to parse cgroups agent fd: %s", val); |
d8fdc620 LP |
2798 | else { |
2799 | m->cgroups_agent_event_source = sd_event_source_unref(m->cgroups_agent_event_source); | |
2800 | safe_close(m->cgroups_agent_fd); | |
2801 | m->cgroups_agent_fd = fdset_remove(fds, fd); | |
2802 | } | |
2803 | ||
fb4650aa | 2804 | } else if ((val = startswith(l, "user-lookup="))) { |
00d9ef85 LP |
2805 | int fd0, fd1; |
2806 | ||
fb4650aa | 2807 | if (sscanf(val, "%i %i", &fd0, &fd1) != 2 || fd0 < 0 || fd1 < 0 || fd0 == fd1 || !fdset_contains(fds, fd0) || !fdset_contains(fds, fd1)) |
62c460c6 | 2808 | log_notice("Failed to parse user lookup fd: %s", val); |
00d9ef85 LP |
2809 | else { |
2810 | m->user_lookup_event_source = sd_event_source_unref(m->user_lookup_event_source); | |
2811 | safe_close_pair(m->user_lookup_fds); | |
2812 | m->user_lookup_fds[0] = fdset_remove(fds, fd0); | |
2813 | m->user_lookup_fds[1] = fdset_remove(fds, fd1); | |
2814 | } | |
2815 | ||
fb4650aa ZJS |
2816 | } else if ((val = startswith(l, "dynamic-user="))) |
2817 | dynamic_user_deserialize_one(m, val, fds); | |
2818 | else if ((val = startswith(l, "destroy-ipc-uid="))) | |
2819 | manager_deserialize_uid_refs_one(m, val); | |
2820 | else if ((val = startswith(l, "destroy-ipc-gid="))) | |
2821 | manager_deserialize_gid_refs_one(m, val); | |
2822 | else if ((val = startswith(l, "subscribed="))) { | |
05a98afd | 2823 | |
fb4650aa | 2824 | if (strv_extend(&m->deserialized_subscribed, val) < 0) |
05a98afd LP |
2825 | log_oom(); |
2826 | ||
232f6754 | 2827 | } else if (!startswith(l, "kdbus-fd=")) /* ignore this one */ |
62c460c6 | 2828 | log_notice("Unknown serialization item '%s'", l); |
10f8e83c LP |
2829 | } |
2830 | ||
a16e1123 LP |
2831 | for (;;) { |
2832 | Unit *u; | |
2833 | char name[UNIT_NAME_MAX+2]; | |
07429866 | 2834 | const char* unit_name; |
a16e1123 LP |
2835 | |
2836 | /* Start marker */ | |
2837 | if (!fgets(name, sizeof(name), f)) { | |
2838 | if (feof(f)) | |
10f8e83c LP |
2839 | r = 0; |
2840 | else | |
2841 | r = -errno; | |
a16e1123 | 2842 | |
82c64bf5 | 2843 | goto finish; |
a16e1123 LP |
2844 | } |
2845 | ||
2846 | char_array_0(name); | |
07429866 | 2847 | unit_name = strstrip(name); |
a16e1123 | 2848 | |
07429866 ZJS |
2849 | r = manager_load_unit(m, unit_name, NULL, NULL, &u); |
2850 | if (r < 0) { | |
2851 | log_notice_errno(r, "Failed to load unit \"%s\", skipping deserialization: %m", unit_name); | |
2852 | if (r == -ENOMEM) | |
2853 | goto finish; | |
2854 | unit_deserialize_skip(f); | |
2855 | continue; | |
2856 | } | |
a16e1123 | 2857 | |
01e10de3 | 2858 | r = unit_deserialize(u, f, fds); |
07429866 ZJS |
2859 | if (r < 0) { |
2860 | log_notice_errno(r, "Failed to deserialize unit \"%s\": %m", unit_name); | |
2861 | if (r == -ENOMEM) | |
2862 | goto finish; | |
2863 | } | |
a16e1123 LP |
2864 | } |
2865 | ||
10f8e83c | 2866 | finish: |
145b1f79 | 2867 | if (ferror(f)) |
82c64bf5 | 2868 | r = -EIO; |
a16e1123 | 2869 | |
a7556052 | 2870 | assert(m->n_reloading > 0); |
313cefa1 | 2871 | m->n_reloading--; |
82c64bf5 LP |
2872 | |
2873 | return r; | |
a16e1123 LP |
2874 | } |
2875 | ||
2876 | int manager_reload(Manager *m) { | |
2877 | int r, q; | |
51d122af ZJS |
2878 | _cleanup_fclose_ FILE *f = NULL; |
2879 | _cleanup_fdset_free_ FDSet *fds = NULL; | |
a16e1123 LP |
2880 | |
2881 | assert(m); | |
2882 | ||
07719a21 LP |
2883 | r = manager_open_serialization(m, &f); |
2884 | if (r < 0) | |
a16e1123 LP |
2885 | return r; |
2886 | ||
313cefa1 | 2887 | m->n_reloading++; |
718db961 | 2888 | bus_manager_send_reloading(m, true); |
38c52d46 | 2889 | |
07719a21 LP |
2890 | fds = fdset_new(); |
2891 | if (!fds) { | |
313cefa1 | 2892 | m->n_reloading--; |
51d122af | 2893 | return -ENOMEM; |
a16e1123 LP |
2894 | } |
2895 | ||
b3680f49 | 2896 | r = manager_serialize(m, f, fds, false); |
07719a21 | 2897 | if (r < 0) { |
313cefa1 | 2898 | m->n_reloading--; |
51d122af | 2899 | return r; |
38c52d46 | 2900 | } |
a16e1123 LP |
2901 | |
2902 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
313cefa1 | 2903 | m->n_reloading--; |
51d122af | 2904 | return -errno; |
a16e1123 LP |
2905 | } |
2906 | ||
2907 | /* From here on there is no way back. */ | |
2908 | manager_clear_jobs_and_units(m); | |
07a78643 | 2909 | lookup_paths_flush_generator(&m->lookup_paths); |
84e3543e | 2910 | lookup_paths_free(&m->lookup_paths); |
29206d46 | 2911 | dynamic_user_vacuum(m, false); |
00d9ef85 LP |
2912 | m->uid_refs = hashmap_free(m->uid_refs); |
2913 | m->gid_refs = hashmap_free(m->gid_refs); | |
2ded0c04 | 2914 | |
4943d143 | 2915 | q = lookup_paths_init(&m->lookup_paths, m->unit_file_scope, 0, NULL); |
e801700e ZJS |
2916 | if (q < 0 && r >= 0) |
2917 | r = q; | |
5a1e9937 | 2918 | |
64691d20 ZJS |
2919 | q = manager_run_environment_generators(m); |
2920 | if (q < 0 && r >= 0) | |
2921 | r = q; | |
2922 | ||
a3c4eb07 LP |
2923 | /* Find new unit paths */ |
2924 | q = manager_run_generators(m); | |
e801700e | 2925 | if (q < 0 && r >= 0) |
07719a21 LP |
2926 | r = q; |
2927 | ||
a1453343 | 2928 | lookup_paths_reduce(&m->lookup_paths); |
5a1e9937 LP |
2929 | manager_build_unit_path_cache(m); |
2930 | ||
a16e1123 | 2931 | /* First, enumerate what we can from all config files */ |
ba64af90 | 2932 | manager_enumerate(m); |
a16e1123 LP |
2933 | |
2934 | /* Second, deserialize our stored data */ | |
07719a21 | 2935 | q = manager_deserialize(m, f, fds); |
07429866 ZJS |
2936 | if (q < 0) { |
2937 | log_error_errno(q, "Deserialization failed: %m"); | |
2938 | ||
2939 | if (r >= 0) | |
2940 | r = q; | |
2941 | } | |
a16e1123 LP |
2942 | |
2943 | fclose(f); | |
2944 | f = NULL; | |
2945 | ||
a2cc4a6c ZJS |
2946 | /* Re-register notify_fd as event source */ |
2947 | q = manager_setup_notify(m); | |
e801700e | 2948 | if (q < 0 && r >= 0) |
a2cc4a6c ZJS |
2949 | r = q; |
2950 | ||
d8fdc620 LP |
2951 | q = manager_setup_cgroups_agent(m); |
2952 | if (q < 0 && r >= 0) | |
2953 | r = q; | |
2954 | ||
00d9ef85 LP |
2955 | q = manager_setup_user_lookup_fd(m); |
2956 | if (q < 0 && r >= 0) | |
2957 | r = q; | |
2958 | ||
a16e1123 | 2959 | /* Third, fire things up! */ |
007c6337 | 2960 | manager_coldplug(m); |
a16e1123 | 2961 | |
29206d46 LP |
2962 | /* Release any dynamic users no longer referenced */ |
2963 | dynamic_user_vacuum(m, true); | |
2964 | ||
00d9ef85 LP |
2965 | /* Release any references to UIDs/GIDs no longer referenced, and destroy any IPC owned by them */ |
2966 | manager_vacuum_uid_refs(m); | |
2967 | manager_vacuum_gid_refs(m); | |
2968 | ||
8936a5e3 DM |
2969 | /* Sync current state of bus names with our set of listening units */ |
2970 | if (m->api_bus) | |
2971 | manager_sync_bus_names(m, m->api_bus); | |
2972 | ||
a7556052 LP |
2973 | assert(m->n_reloading > 0); |
2974 | m->n_reloading--; | |
9f611ad8 | 2975 | |
71445ae7 LP |
2976 | m->send_reloading_done = true; |
2977 | ||
a16e1123 LP |
2978 | return r; |
2979 | } | |
2980 | ||
fdf20a31 | 2981 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2982 | Unit *u; |
2983 | Iterator i; | |
2984 | ||
2985 | assert(m); | |
2986 | ||
2987 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2988 | unit_reset_failed(u); |
5632e374 LP |
2989 | } |
2990 | ||
31afa0a4 | 2991 | bool manager_unit_inactive_or_pending(Manager *m, const char *name) { |
8f6df3fa LP |
2992 | Unit *u; |
2993 | ||
2994 | assert(m); | |
2995 | assert(name); | |
2996 | ||
2997 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
2998 | u = manager_get_unit(m, name); |
2999 | if (!u) | |
8f6df3fa LP |
3000 | return true; |
3001 | ||
31afa0a4 | 3002 | return unit_inactive_or_pending(u); |
8f6df3fa LP |
3003 | } |
3004 | ||
56dacdbc | 3005 | static void manager_notify_finished(Manager *m) { |
7ceba241 | 3006 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 3007 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 | 3008 | |
e0a3da1f | 3009 | if (m->test_run_flags) |
b0c918b9 LP |
3010 | return; |
3011 | ||
463d0d15 | 3012 | if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0) { |
e03ae661 | 3013 | |
915b3753 LP |
3014 | /* Note that m->kernel_usec.monotonic is always at 0, |
3015 | * and m->firmware_usec.monotonic and | |
3016 | * m->loader_usec.monotonic should be considered | |
3017 | * negative values. */ | |
3018 | ||
7ceba241 LP |
3019 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
3020 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 3021 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 3022 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 3023 | |
e9ddabc2 | 3024 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 3025 | |
915b3753 LP |
3026 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
3027 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 3028 | |
e12919e8 | 3029 | log_struct(LOG_INFO, |
2b044526 | 3030 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 LP |
3031 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
3032 | "INITRD_USEC="USEC_FMT, initrd_usec, | |
3033 | "USERSPACE_USEC="USEC_FMT, userspace_usec, | |
e2cc6eca LP |
3034 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
3035 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
3036 | format_timespan(initrd, sizeof(initrd), initrd_usec, USEC_PER_MSEC), | |
3037 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
3038 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 3039 | NULL); |
18fa6b27 | 3040 | } else { |
915b3753 | 3041 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
3042 | initrd_usec = 0; |
3043 | ||
81270860 | 3044 | log_struct(LOG_INFO, |
2b044526 | 3045 | "MESSAGE_ID=" SD_MESSAGE_STARTUP_FINISHED_STR, |
e12919e8 | 3046 | "KERNEL_USEC="USEC_FMT, kernel_usec, |
ccd06097 | 3047 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
3048 | LOG_MESSAGE("Startup finished in %s (kernel) + %s (userspace) = %s.", |
3049 | format_timespan(kernel, sizeof(kernel), kernel_usec, USEC_PER_MSEC), | |
3050 | format_timespan(userspace, sizeof(userspace), userspace_usec, USEC_PER_MSEC), | |
3051 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
81270860 | 3052 | NULL); |
e12919e8 LP |
3053 | } |
3054 | } else { | |
3055 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; | |
3056 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
3057 | ||
3058 | log_struct(LOG_INFO, | |
2b044526 | 3059 | "MESSAGE_ID=" SD_MESSAGE_USER_STARTUP_FINISHED_STR, |
e12919e8 | 3060 | "USERSPACE_USEC="USEC_FMT, userspace_usec, |
e2cc6eca LP |
3061 | LOG_MESSAGE("Startup finished in %s.", |
3062 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)), | |
e12919e8 | 3063 | NULL); |
18fa6b27 | 3064 | } |
b0c918b9 | 3065 | |
718db961 | 3066 | bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
3067 | |
3068 | sd_notifyf(false, | |
af4ec430 LP |
3069 | "READY=1\n" |
3070 | "STATUS=Startup finished in %s.", | |
2fa4092c | 3071 | format_timespan(sum, sizeof(sum), total_usec, USEC_PER_MSEC)); |
b0c918b9 LP |
3072 | } |
3073 | ||
56dacdbc | 3074 | void manager_check_finished(Manager *m) { |
56dacdbc ZJS |
3075 | assert(m); |
3076 | ||
2c289ea8 | 3077 | if (MANAGER_IS_RELOADING(m)) |
aad1976f LP |
3078 | return; |
3079 | ||
9771b62d LP |
3080 | /* Verify that we are actually running currently. Initially |
3081 | * the exit code is set to invalid, and during operation it is | |
3082 | * then set to MANAGER_OK */ | |
3083 | if (m->exit_code != MANAGER_OK) | |
3084 | return; | |
3085 | ||
56dacdbc | 3086 | if (hashmap_size(m->jobs) > 0) { |
56dacdbc | 3087 | if (m->jobs_in_progress_event_source) |
2ae56591 | 3088 | /* Ignore any failure, this is only for feedback */ |
e7ab4d1a | 3089 | (void) sd_event_source_set_time(m->jobs_in_progress_event_source, now(CLOCK_MONOTONIC) + JOBS_IN_PROGRESS_WAIT_USEC); |
56dacdbc ZJS |
3090 | |
3091 | return; | |
3092 | } | |
3093 | ||
3094 | manager_flip_auto_status(m, false); | |
3095 | ||
3096 | /* Notify Type=idle units that we are done now */ | |
56dacdbc ZJS |
3097 | manager_close_idle_pipe(m); |
3098 | ||
3099 | /* Turn off confirm spawn now */ | |
7d5ceb64 | 3100 | m->confirm_spawn = NULL; |
56dacdbc ZJS |
3101 | |
3102 | /* No need to update ask password status when we're going non-interactive */ | |
3103 | manager_close_ask_password(m); | |
3104 | ||
3105 | /* This is no longer the first boot */ | |
3106 | manager_set_first_boot(m, false); | |
3107 | ||
3108 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
3109 | return; | |
3110 | ||
3111 | dual_timestamp_get(&m->finish_timestamp); | |
3112 | ||
3113 | manager_notify_finished(m); | |
3114 | ||
e7ab4d1a | 3115 | manager_invalidate_startup_units(m); |
56dacdbc ZJS |
3116 | } |
3117 | ||
64691d20 ZJS |
3118 | static bool generator_path_any(const char* const* paths) { |
3119 | char **path; | |
3120 | bool found = false; | |
3121 | ||
3122 | /* Optimize by skipping the whole process by not creating output directories | |
3123 | * if no generators are found. */ | |
3124 | STRV_FOREACH(path, (char**) paths) | |
3125 | if (access(*path, F_OK) == 0) | |
3126 | found = true; | |
3127 | else if (errno != ENOENT) | |
3128 | log_warning_errno(errno, "Failed to open generator directory %s: %m", *path); | |
3129 | ||
3130 | return found; | |
3131 | } | |
3132 | ||
3133 | static const char* system_env_generator_binary_paths[] = { | |
3134 | "/run/systemd/system-environment-generators", | |
3135 | "/etc/systemd/system-environment-generators", | |
3136 | "/usr/local/lib/systemd/system-environment-generators", | |
3137 | SYSTEM_ENV_GENERATOR_PATH, | |
3138 | NULL | |
3139 | }; | |
3140 | ||
3141 | static const char* user_env_generator_binary_paths[] = { | |
3142 | "/run/systemd/user-environment-generators", | |
3143 | "/etc/systemd/user-environment-generators", | |
3144 | "/usr/local/lib/systemd/user-environment-generators", | |
3145 | USER_ENV_GENERATOR_PATH, | |
3146 | NULL | |
3147 | }; | |
3148 | ||
3149 | static int manager_run_environment_generators(Manager *m) { | |
3150 | char **tmp = NULL; /* this is only used in the forked process, no cleanup here */ | |
3151 | const char **paths; | |
3152 | void* args[] = {&tmp, &tmp, &m->environment}; | |
3153 | ||
e0a3da1f ZJS |
3154 | if (m->test_run_flags && !(m->test_run_flags & MANAGER_TEST_RUN_ENV_GENERATORS)) |
3155 | return 0; | |
3156 | ||
64691d20 ZJS |
3157 | paths = MANAGER_IS_SYSTEM(m) ? system_env_generator_binary_paths : user_env_generator_binary_paths; |
3158 | ||
3159 | if (!generator_path_any(paths)) | |
3160 | return 0; | |
3161 | ||
3162 | return execute_directories(paths, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL); | |
3163 | } | |
3164 | ||
e801700e | 3165 | static int manager_run_generators(Manager *m) { |
f42348ac | 3166 | _cleanup_strv_free_ char **paths = NULL; |
07719a21 | 3167 | const char *argv[5]; |
07719a21 | 3168 | int r; |
5a1e9937 LP |
3169 | |
3170 | assert(m); | |
3171 | ||
e0a3da1f ZJS |
3172 | if (m->test_run_flags && !(m->test_run_flags & MANAGER_TEST_RUN_GENERATORS)) |
3173 | return 0; | |
3174 | ||
9183df70 | 3175 | paths = generator_binary_paths(m->unit_file_scope); |
e801700e ZJS |
3176 | if (!paths) |
3177 | return log_oom(); | |
5a1e9937 | 3178 | |
64691d20 ZJS |
3179 | if (!generator_path_any((const char* const*) paths)) |
3180 | return 0; | |
5a1e9937 | 3181 | |
cd64fd56 | 3182 | r = lookup_paths_mkdir_generator(&m->lookup_paths); |
07719a21 LP |
3183 | if (r < 0) |
3184 | goto finish; | |
5a1e9937 | 3185 | |
83cc030f | 3186 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
a3c4eb07 LP |
3187 | argv[1] = m->lookup_paths.generator; |
3188 | argv[2] = m->lookup_paths.generator_early; | |
3189 | argv[3] = m->lookup_paths.generator_late; | |
07719a21 | 3190 | argv[4] = NULL; |
5a1e9937 | 3191 | |
718db961 | 3192 | RUN_WITH_UMASK(0022) |
c6e47247 ZJS |
3193 | execute_directories((const char* const*) paths, DEFAULT_TIMEOUT_USEC, |
3194 | NULL, NULL, (char**) argv); | |
5a1e9937 | 3195 | |
718db961 | 3196 | finish: |
cd64fd56 | 3197 | lookup_paths_trim_generator(&m->lookup_paths); |
e801700e | 3198 | return r; |
5a1e9937 LP |
3199 | } |
3200 | ||
718db961 LP |
3201 | int manager_environment_add(Manager *m, char **minus, char **plus) { |
3202 | char **a = NULL, **b = NULL, **l; | |
97d0e5f8 | 3203 | assert(m); |
bcd8e6d1 | 3204 | |
718db961 | 3205 | l = m->environment; |
bcd8e6d1 | 3206 | |
718db961 LP |
3207 | if (!strv_isempty(minus)) { |
3208 | a = strv_env_delete(l, 1, minus); | |
3209 | if (!a) | |
3210 | return -ENOMEM; | |
3211 | ||
3212 | l = a; | |
3213 | } | |
3214 | ||
3215 | if (!strv_isempty(plus)) { | |
3216 | b = strv_env_merge(2, l, plus); | |
aa9f8a30 AH |
3217 | if (!b) { |
3218 | strv_free(a); | |
718db961 | 3219 | return -ENOMEM; |
aa9f8a30 | 3220 | } |
bcd8e6d1 | 3221 | |
718db961 LP |
3222 | l = b; |
3223 | } | |
3224 | ||
3225 | if (m->environment != l) | |
3226 | strv_free(m->environment); | |
3227 | if (a != l) | |
3228 | strv_free(a); | |
3229 | if (b != l) | |
3230 | strv_free(b); | |
3231 | ||
f069efb4 LP |
3232 | m->environment = l; |
3233 | manager_clean_environment(m); | |
3234 | strv_sort(m->environment); | |
3235 | ||
97d0e5f8 UTL |
3236 | return 0; |
3237 | } | |
3238 | ||
c93ff2e9 FC |
3239 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
3240 | int i; | |
3241 | ||
3242 | assert(m); | |
3243 | ||
517d56b1 | 3244 | for (i = 0; i < _RLIMIT_MAX; i++) { |
d9814c76 EV |
3245 | m->rlimit[i] = mfree(m->rlimit[i]); |
3246 | ||
07719a21 LP |
3247 | if (!default_rlimit[i]) |
3248 | continue; | |
c93ff2e9 | 3249 | |
07719a21 LP |
3250 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
3251 | if (!m->rlimit[i]) | |
3ce40911 | 3252 | return log_oom(); |
c93ff2e9 FC |
3253 | } |
3254 | ||
3255 | return 0; | |
3256 | } | |
3257 | ||
4cfa2c99 | 3258 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
3259 | Unit *u; |
3260 | ||
3261 | assert(m); | |
3262 | ||
463d0d15 | 3263 | if (!MANAGER_IS_SYSTEM(m)) |
f1dd0c3f LP |
3264 | return; |
3265 | ||
731a676c LP |
3266 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
3267 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 3268 | log_close_journal(); |
731a676c | 3269 | return; |
f1dd0c3f LP |
3270 | } |
3271 | ||
731a676c LP |
3272 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
3273 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 3274 | log_close_journal(); |
731a676c LP |
3275 | return; |
3276 | } | |
f1dd0c3f | 3277 | |
731a676c LP |
3278 | /* Hmm, OK, so the socket is fully up and the service is up |
3279 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
3280 | log_open(); |
3281 | } | |
3282 | ||
d450b6f2 | 3283 | void manager_set_show_status(Manager *m, ShowStatus mode) { |
27d340c7 | 3284 | assert(m); |
d450b6f2 | 3285 | assert(IN_SET(mode, SHOW_STATUS_AUTO, SHOW_STATUS_NO, SHOW_STATUS_YES, SHOW_STATUS_TEMPORARY)); |
27d340c7 | 3286 | |
463d0d15 | 3287 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3288 | return; |
3289 | ||
76b6f3f6 ZJS |
3290 | if (m->show_status != mode) |
3291 | log_debug("%s showing of status.", | |
3292 | mode == SHOW_STATUS_NO ? "Disabling" : "Enabling"); | |
d450b6f2 | 3293 | m->show_status = mode; |
27d340c7 | 3294 | |
d450b6f2 | 3295 | if (mode > 0) |
ac5b0c13 | 3296 | (void) touch("/run/systemd/show-status"); |
27d340c7 | 3297 | else |
ac5b0c13 | 3298 | (void) unlink("/run/systemd/show-status"); |
27d340c7 LP |
3299 | } |
3300 | ||
127d5fd1 | 3301 | static bool manager_get_show_status(Manager *m, StatusType type) { |
27d340c7 LP |
3302 | assert(m); |
3303 | ||
463d0d15 | 3304 | if (!MANAGER_IS_SYSTEM(m)) |
27d340c7 LP |
3305 | return false; |
3306 | ||
31a7eb86 ZJS |
3307 | if (m->no_console_output) |
3308 | return false; | |
3309 | ||
d81afec1 | 3310 | if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING)) |
08510627 LP |
3311 | return false; |
3312 | ||
e46b13c8 | 3313 | /* If we cannot find out the status properly, just proceed. */ |
ebc5788e | 3314 | if (type != STATUS_TYPE_EMERGENCY && manager_check_ask_password(m) > 0) |
e46b13c8 ZJS |
3315 | return false; |
3316 | ||
d450b6f2 | 3317 | if (m->show_status > 0) |
27d340c7 LP |
3318 | return true; |
3319 | ||
031886ed | 3320 | return false; |
27d340c7 | 3321 | } |
68b29a9f | 3322 | |
7d5ceb64 FB |
3323 | const char *manager_get_confirm_spawn(Manager *m) { |
3324 | static int last_errno = 0; | |
3325 | const char *vc = m->confirm_spawn; | |
3326 | struct stat st; | |
3327 | int r; | |
3328 | ||
3329 | /* Here's the deal: we want to test the validity of the console but don't want | |
3330 | * PID1 to go through the whole console process which might block. But we also | |
3331 | * want to warn the user only once if something is wrong with the console so we | |
3332 | * cannot do the sanity checks after spawning our children. So here we simply do | |
3333 | * really basic tests to hopefully trap common errors. | |
3334 | * | |
3335 | * If the console suddenly disappear at the time our children will really it | |
3336 | * then they will simply fail to acquire it and a positive answer will be | |
3337 | * assumed. New children will fallback to /dev/console though. | |
3338 | * | |
3339 | * Note: TTYs are devices that can come and go any time, and frequently aren't | |
3340 | * available yet during early boot (consider a USB rs232 dongle...). If for any | |
3341 | * reason the configured console is not ready, we fallback to the default | |
3342 | * console. */ | |
3343 | ||
3344 | if (!vc || path_equal(vc, "/dev/console")) | |
3345 | return vc; | |
3346 | ||
3347 | r = stat(vc, &st); | |
3348 | if (r < 0) | |
3349 | goto fail; | |
3350 | ||
3351 | if (!S_ISCHR(st.st_mode)) { | |
3352 | errno = ENOTTY; | |
3353 | goto fail; | |
3354 | } | |
3355 | ||
3356 | last_errno = 0; | |
3357 | return vc; | |
3358 | fail: | |
3359 | if (last_errno != errno) { | |
3360 | last_errno = errno; | |
3361 | log_warning_errno(errno, "Failed to open %s: %m, using default console", vc); | |
3362 | } | |
3363 | return "/dev/console"; | |
3364 | } | |
3365 | ||
e2680723 LP |
3366 | void manager_set_first_boot(Manager *m, bool b) { |
3367 | assert(m); | |
3368 | ||
463d0d15 | 3369 | if (!MANAGER_IS_SYSTEM(m)) |
e2680723 LP |
3370 | return; |
3371 | ||
ae2a2c53 LP |
3372 | if (m->first_boot != (int) b) { |
3373 | if (b) | |
3374 | (void) touch("/run/systemd/first-boot"); | |
3375 | else | |
3376 | (void) unlink("/run/systemd/first-boot"); | |
3377 | } | |
e2680723 | 3378 | |
ae2a2c53 | 3379 | m->first_boot = b; |
e2680723 LP |
3380 | } |
3381 | ||
b0eb2944 FB |
3382 | void manager_disable_confirm_spawn(void) { |
3383 | (void) touch("/run/systemd/confirm_spawn_disabled"); | |
3384 | } | |
3385 | ||
3386 | bool manager_is_confirm_spawn_disabled(Manager *m) { | |
3387 | if (!m->confirm_spawn) | |
3388 | return true; | |
3389 | ||
3390 | return access("/run/systemd/confirm_spawn_disabled", F_OK) >= 0; | |
3391 | } | |
3392 | ||
127d5fd1 | 3393 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) { |
25cee550 MS |
3394 | va_list ap; |
3395 | ||
cb6531be ZJS |
3396 | /* If m is NULL, assume we're after shutdown and let the messages through. */ |
3397 | ||
3398 | if (m && !manager_get_show_status(m, type)) | |
25cee550 MS |
3399 | return; |
3400 | ||
03b717a3 MS |
3401 | /* XXX We should totally drop the check for ephemeral here |
3402 | * and thus effectively make 'Type=idle' pointless. */ | |
cb6531be | 3403 | if (type == STATUS_TYPE_EPHEMERAL && m && m->n_on_console > 0) |
03b717a3 MS |
3404 | return; |
3405 | ||
25cee550 | 3406 | va_start(ap, format); |
127d5fd1 | 3407 | status_vprintf(status, true, type == STATUS_TYPE_EPHEMERAL, format, ap); |
25cee550 MS |
3408 | va_end(ap); |
3409 | } | |
3410 | ||
a57f7e2c LP |
3411 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path) { |
3412 | char p[strlen(path)+1]; | |
3413 | ||
3414 | assert(m); | |
3415 | assert(path); | |
3416 | ||
3417 | strcpy(p, path); | |
3418 | path_kill_slashes(p); | |
3419 | ||
3420 | return hashmap_get(m->units_requiring_mounts_for, streq(p, "/") ? "" : p); | |
3421 | } | |
e66cf1a3 | 3422 | |
19bbdd98 | 3423 | void manager_set_exec_params(Manager *m, ExecParameters *p) { |
f755e3b7 | 3424 | assert(m); |
3536f49e YW |
3425 | assert(p); |
3426 | ||
3427 | p->environment = m->environment; | |
3428 | p->confirm_spawn = manager_get_confirm_spawn(m); | |
3429 | p->cgroup_supported = m->cgroup_supported; | |
3430 | p->prefix = m->prefix; | |
e66cf1a3 | 3431 | |
8679efde | 3432 | SET_FLAG(p->flags, EXEC_PASS_LOG_UNIT|EXEC_CHOWN_DIRECTORIES, MANAGER_IS_SYSTEM(m)); |
e66cf1a3 | 3433 | } |
f755e3b7 | 3434 | |
5269eb6b | 3435 | int manager_update_failed_units(Manager *m, Unit *u, bool failed) { |
03455c28 | 3436 | unsigned size; |
5269eb6b | 3437 | int r; |
03455c28 LDM |
3438 | |
3439 | assert(m); | |
3440 | assert(u->manager == m); | |
3441 | ||
3442 | size = set_size(m->failed_units); | |
3443 | ||
9fff8981 | 3444 | if (failed) { |
5269eb6b LP |
3445 | r = set_ensure_allocated(&m->failed_units, NULL); |
3446 | if (r < 0) | |
3447 | return log_oom(); | |
3448 | ||
9fff8981 | 3449 | if (set_put(m->failed_units, u) < 0) |
5269eb6b | 3450 | return log_oom(); |
9fff8981 | 3451 | } else |
5269eb6b | 3452 | (void) set_remove(m->failed_units, u); |
03455c28 LDM |
3453 | |
3454 | if (set_size(m->failed_units) != size) | |
3455 | bus_manager_send_change_signal(m); | |
5269eb6b LP |
3456 | |
3457 | return 0; | |
03455c28 LDM |
3458 | } |
3459 | ||
f755e3b7 LP |
3460 | ManagerState manager_state(Manager *m) { |
3461 | Unit *u; | |
3462 | ||
3463 | assert(m); | |
3464 | ||
3465 | /* Did we ever finish booting? If not then we are still starting up */ | |
d81afec1 LP |
3466 | if (!dual_timestamp_is_set(&m->finish_timestamp)) { |
3467 | ||
3468 | u = manager_get_unit(m, SPECIAL_BASIC_TARGET); | |
3469 | if (!u || !UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) | |
3470 | return MANAGER_INITIALIZING; | |
3471 | ||
f755e3b7 | 3472 | return MANAGER_STARTING; |
d81afec1 | 3473 | } |
f755e3b7 LP |
3474 | |
3475 | /* Is the special shutdown target queued? If so, we are in shutdown state */ | |
3476 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); | |
f0469b8c | 3477 | if (u && u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)) |
f755e3b7 LP |
3478 | return MANAGER_STOPPING; |
3479 | ||
3480 | /* Are the rescue or emergency targets active or queued? If so we are in maintenance state */ | |
3481 | u = manager_get_unit(m, SPECIAL_RESCUE_TARGET); | |
3482 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3483 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3484 | return MANAGER_MAINTENANCE; |
3485 | ||
3486 | u = manager_get_unit(m, SPECIAL_EMERGENCY_TARGET); | |
3487 | if (u && (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u)) || | |
f0469b8c | 3488 | (u->job && IN_SET(u->job->type, JOB_START, JOB_RESTART, JOB_RELOAD_OR_START)))) |
f755e3b7 LP |
3489 | return MANAGER_MAINTENANCE; |
3490 | ||
3491 | /* Are there any failed units? If so, we are in degraded mode */ | |
3492 | if (set_size(m->failed_units) > 0) | |
3493 | return MANAGER_DEGRADED; | |
3494 | ||
3495 | return MANAGER_RUNNING; | |
3496 | } | |
3497 | ||
00d9ef85 LP |
3498 | #define DESTROY_IPC_FLAG (UINT32_C(1) << 31) |
3499 | ||
3500 | static void manager_unref_uid_internal( | |
3501 | Manager *m, | |
3502 | Hashmap **uid_refs, | |
3503 | uid_t uid, | |
3504 | bool destroy_now, | |
3505 | int (*_clean_ipc)(uid_t uid)) { | |
3506 | ||
3507 | uint32_t c, n; | |
3508 | ||
3509 | assert(m); | |
3510 | assert(uid_refs); | |
3511 | assert(uid_is_valid(uid)); | |
3512 | assert(_clean_ipc); | |
3513 | ||
3514 | /* A generic implementation, covering both manager_unref_uid() and manager_unref_gid(), under the assumption | |
3515 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. | |
3516 | * | |
3517 | * We store a hashmap where the UID/GID is they key and the value is a 32bit reference counter, whose highest | |
3518 | * bit is used as flag for marking UIDs/GIDs whose IPC objects to remove when the last reference to the UID/GID | |
3519 | * is dropped. The flag is set to on, once at least one reference from a unit where RemoveIPC= is set is added | |
3520 | * on a UID/GID. It is reset when the UID's/GID's reference counter drops to 0 again. */ | |
3521 | ||
3522 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3523 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3524 | ||
3525 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3526 | return; | |
3527 | ||
3528 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3529 | ||
3530 | n = c & ~DESTROY_IPC_FLAG; | |
3531 | assert(n > 0); | |
3532 | n--; | |
3533 | ||
3534 | if (destroy_now && n == 0) { | |
3535 | hashmap_remove(*uid_refs, UID_TO_PTR(uid)); | |
3536 | ||
3537 | if (c & DESTROY_IPC_FLAG) { | |
3538 | log_debug("%s " UID_FMT " is no longer referenced, cleaning up its IPC.", | |
3539 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3540 | uid); | |
3541 | (void) _clean_ipc(uid); | |
3542 | } | |
3543 | } else { | |
3544 | c = n | (c & DESTROY_IPC_FLAG); | |
3545 | assert_se(hashmap_update(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)) >= 0); | |
3546 | } | |
3547 | } | |
3548 | ||
3549 | void manager_unref_uid(Manager *m, uid_t uid, bool destroy_now) { | |
3550 | manager_unref_uid_internal(m, &m->uid_refs, uid, destroy_now, clean_ipc_by_uid); | |
3551 | } | |
3552 | ||
3553 | void manager_unref_gid(Manager *m, gid_t gid, bool destroy_now) { | |
3554 | manager_unref_uid_internal(m, &m->gid_refs, (uid_t) gid, destroy_now, clean_ipc_by_gid); | |
3555 | } | |
3556 | ||
3557 | static int manager_ref_uid_internal( | |
3558 | Manager *m, | |
3559 | Hashmap **uid_refs, | |
3560 | uid_t uid, | |
3561 | bool clean_ipc) { | |
3562 | ||
3563 | uint32_t c, n; | |
3564 | int r; | |
3565 | ||
3566 | assert(m); | |
3567 | assert(uid_refs); | |
3568 | assert(uid_is_valid(uid)); | |
3569 | ||
3570 | /* A generic implementation, covering both manager_ref_uid() and manager_ref_gid(), under the assumption | |
3571 | * that uid_t and gid_t are actually defined the same way, with the same validity rules. */ | |
3572 | ||
3573 | assert_cc(sizeof(uid_t) == sizeof(gid_t)); | |
3574 | assert_cc(UID_INVALID == (uid_t) GID_INVALID); | |
3575 | ||
3576 | if (uid == 0) /* We don't keep track of root, and will never destroy it */ | |
3577 | return 0; | |
3578 | ||
3579 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3580 | if (r < 0) | |
3581 | return r; | |
3582 | ||
3583 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3584 | ||
3585 | n = c & ~DESTROY_IPC_FLAG; | |
3586 | n++; | |
3587 | ||
3588 | if (n & DESTROY_IPC_FLAG) /* check for overflow */ | |
3589 | return -EOVERFLOW; | |
3590 | ||
3591 | c = n | (c & DESTROY_IPC_FLAG) | (clean_ipc ? DESTROY_IPC_FLAG : 0); | |
3592 | ||
3593 | return hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3594 | } | |
3595 | ||
3596 | int manager_ref_uid(Manager *m, uid_t uid, bool clean_ipc) { | |
3597 | return manager_ref_uid_internal(m, &m->uid_refs, uid, clean_ipc); | |
3598 | } | |
3599 | ||
3600 | int manager_ref_gid(Manager *m, gid_t gid, bool clean_ipc) { | |
3601 | return manager_ref_uid_internal(m, &m->gid_refs, (uid_t) gid, clean_ipc); | |
3602 | } | |
3603 | ||
3604 | static void manager_vacuum_uid_refs_internal( | |
3605 | Manager *m, | |
3606 | Hashmap **uid_refs, | |
3607 | int (*_clean_ipc)(uid_t uid)) { | |
3608 | ||
3609 | Iterator i; | |
3610 | void *p, *k; | |
3611 | ||
3612 | assert(m); | |
3613 | assert(uid_refs); | |
3614 | assert(_clean_ipc); | |
3615 | ||
3616 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3617 | uint32_t c, n; | |
3618 | uid_t uid; | |
3619 | ||
3620 | uid = PTR_TO_UID(k); | |
3621 | c = PTR_TO_UINT32(p); | |
3622 | ||
3623 | n = c & ~DESTROY_IPC_FLAG; | |
3624 | if (n > 0) | |
3625 | continue; | |
3626 | ||
3627 | if (c & DESTROY_IPC_FLAG) { | |
3628 | log_debug("Found unreferenced %s " UID_FMT " after reload/reexec. Cleaning up.", | |
3629 | _clean_ipc == clean_ipc_by_uid ? "UID" : "GID", | |
3630 | uid); | |
3631 | (void) _clean_ipc(uid); | |
3632 | } | |
3633 | ||
3634 | assert_se(hashmap_remove(*uid_refs, k) == p); | |
3635 | } | |
3636 | } | |
3637 | ||
3638 | void manager_vacuum_uid_refs(Manager *m) { | |
3639 | manager_vacuum_uid_refs_internal(m, &m->uid_refs, clean_ipc_by_uid); | |
3640 | } | |
3641 | ||
3642 | void manager_vacuum_gid_refs(Manager *m) { | |
3643 | manager_vacuum_uid_refs_internal(m, &m->gid_refs, clean_ipc_by_gid); | |
3644 | } | |
3645 | ||
3646 | static void manager_serialize_uid_refs_internal( | |
3647 | Manager *m, | |
3648 | FILE *f, | |
3649 | Hashmap **uid_refs, | |
3650 | const char *field_name) { | |
3651 | ||
3652 | Iterator i; | |
3653 | void *p, *k; | |
3654 | ||
3655 | assert(m); | |
3656 | assert(f); | |
3657 | assert(uid_refs); | |
3658 | assert(field_name); | |
3659 | ||
3660 | /* Serialize the UID reference table. Or actually, just the IPC destruction flag of it, as the actual counter | |
3661 | * of it is better rebuild after a reload/reexec. */ | |
3662 | ||
3663 | HASHMAP_FOREACH_KEY(p, k, *uid_refs, i) { | |
3664 | uint32_t c; | |
3665 | uid_t uid; | |
3666 | ||
3667 | uid = PTR_TO_UID(k); | |
3668 | c = PTR_TO_UINT32(p); | |
3669 | ||
3670 | if (!(c & DESTROY_IPC_FLAG)) | |
3671 | continue; | |
3672 | ||
3673 | fprintf(f, "%s=" UID_FMT "\n", field_name, uid); | |
3674 | } | |
3675 | } | |
3676 | ||
3677 | void manager_serialize_uid_refs(Manager *m, FILE *f) { | |
3678 | manager_serialize_uid_refs_internal(m, f, &m->uid_refs, "destroy-ipc-uid"); | |
3679 | } | |
3680 | ||
3681 | void manager_serialize_gid_refs(Manager *m, FILE *f) { | |
3682 | manager_serialize_uid_refs_internal(m, f, &m->gid_refs, "destroy-ipc-gid"); | |
3683 | } | |
3684 | ||
3685 | static void manager_deserialize_uid_refs_one_internal( | |
3686 | Manager *m, | |
3687 | Hashmap** uid_refs, | |
3688 | const char *value) { | |
3689 | ||
3690 | uid_t uid; | |
3691 | uint32_t c; | |
3692 | int r; | |
3693 | ||
3694 | assert(m); | |
3695 | assert(uid_refs); | |
3696 | assert(value); | |
3697 | ||
3698 | r = parse_uid(value, &uid); | |
3699 | if (r < 0 || uid == 0) { | |
3700 | log_debug("Unable to parse UID reference serialization"); | |
3701 | return; | |
3702 | } | |
3703 | ||
3704 | r = hashmap_ensure_allocated(uid_refs, &trivial_hash_ops); | |
3705 | if (r < 0) { | |
3706 | log_oom(); | |
3707 | return; | |
3708 | } | |
3709 | ||
3710 | c = PTR_TO_UINT32(hashmap_get(*uid_refs, UID_TO_PTR(uid))); | |
3711 | if (c & DESTROY_IPC_FLAG) | |
3712 | return; | |
3713 | ||
3714 | c |= DESTROY_IPC_FLAG; | |
3715 | ||
3716 | r = hashmap_replace(*uid_refs, UID_TO_PTR(uid), UINT32_TO_PTR(c)); | |
3717 | if (r < 0) { | |
3718 | log_debug("Failed to add UID reference entry"); | |
3719 | return; | |
3720 | } | |
3721 | } | |
3722 | ||
3723 | void manager_deserialize_uid_refs_one(Manager *m, const char *value) { | |
3724 | manager_deserialize_uid_refs_one_internal(m, &m->uid_refs, value); | |
3725 | } | |
3726 | ||
3727 | void manager_deserialize_gid_refs_one(Manager *m, const char *value) { | |
3728 | manager_deserialize_uid_refs_one_internal(m, &m->gid_refs, value); | |
3729 | } | |
3730 | ||
3731 | int manager_dispatch_user_lookup_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata) { | |
3732 | struct buffer { | |
3733 | uid_t uid; | |
3734 | gid_t gid; | |
3735 | char unit_name[UNIT_NAME_MAX+1]; | |
3736 | } _packed_ buffer; | |
3737 | ||
3738 | Manager *m = userdata; | |
3739 | ssize_t l; | |
3740 | size_t n; | |
3741 | Unit *u; | |
3742 | ||
3743 | assert_se(source); | |
3744 | assert_se(m); | |
3745 | ||
3746 | /* Invoked whenever a child process succeeded resolving its user/group to use and sent us the resulting UID/GID | |
3747 | * in a datagram. We parse the datagram here and pass it off to the unit, so that it can add a reference to the | |
3748 | * UID/GID so that it can destroy the UID/GID's IPC objects when the reference counter drops to 0. */ | |
3749 | ||
3750 | l = recv(fd, &buffer, sizeof(buffer), MSG_DONTWAIT); | |
3751 | if (l < 0) { | |
3752 | if (errno == EINTR || errno == EAGAIN) | |
3753 | return 0; | |
3754 | ||
3755 | return log_error_errno(errno, "Failed to read from user lookup fd: %m"); | |
3756 | } | |
3757 | ||
3758 | if ((size_t) l <= offsetof(struct buffer, unit_name)) { | |
3759 | log_warning("Received too short user lookup message, ignoring."); | |
3760 | return 0; | |
3761 | } | |
3762 | ||
3763 | if ((size_t) l > offsetof(struct buffer, unit_name) + UNIT_NAME_MAX) { | |
3764 | log_warning("Received too long user lookup message, ignoring."); | |
3765 | return 0; | |
3766 | } | |
3767 | ||
3768 | if (!uid_is_valid(buffer.uid) && !gid_is_valid(buffer.gid)) { | |
3769 | log_warning("Got user lookup message with invalid UID/GID pair, ignoring."); | |
3770 | return 0; | |
3771 | } | |
3772 | ||
3773 | n = (size_t) l - offsetof(struct buffer, unit_name); | |
3774 | if (memchr(buffer.unit_name, 0, n)) { | |
3775 | log_warning("Received lookup message with embedded NUL character, ignoring."); | |
3776 | return 0; | |
3777 | } | |
3778 | ||
3779 | buffer.unit_name[n] = 0; | |
3780 | u = manager_get_unit(m, buffer.unit_name); | |
3781 | if (!u) { | |
3782 | log_debug("Got user lookup message but unit doesn't exist, ignoring."); | |
3783 | return 0; | |
3784 | } | |
3785 | ||
3786 | log_unit_debug(u, "User lookup succeeded: uid=" UID_FMT " gid=" GID_FMT, buffer.uid, buffer.gid); | |
3787 | ||
3788 | unit_notify_user_lookup(u, buffer.uid, buffer.gid); | |
3789 | return 0; | |
3790 | } | |
3791 | ||
f755e3b7 | 3792 | static const char *const manager_state_table[_MANAGER_STATE_MAX] = { |
d81afec1 | 3793 | [MANAGER_INITIALIZING] = "initializing", |
f755e3b7 LP |
3794 | [MANAGER_STARTING] = "starting", |
3795 | [MANAGER_RUNNING] = "running", | |
3796 | [MANAGER_DEGRADED] = "degraded", | |
3797 | [MANAGER_MAINTENANCE] = "maintenance", | |
3798 | [MANAGER_STOPPING] = "stopping", | |
3799 | }; | |
3800 | ||
3801 | DEFINE_STRING_TABLE_LOOKUP(manager_state, ManagerState); |