]>
Commit | Line | Data |
---|---|---|
d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
60918275 LP |
22 | #include <assert.h> |
23 | #include <errno.h> | |
87d1515d | 24 | #include <string.h> |
9152c765 LP |
25 | #include <sys/epoll.h> |
26 | #include <signal.h> | |
27 | #include <sys/signalfd.h> | |
28 | #include <sys/wait.h> | |
29 | #include <unistd.h> | |
30 | #include <sys/poll.h> | |
e1414003 LP |
31 | #include <sys/reboot.h> |
32 | #include <sys/ioctl.h> | |
33 | #include <linux/kd.h> | |
80876c20 LP |
34 | #include <termios.h> |
35 | #include <fcntl.h> | |
a16e1123 LP |
36 | #include <sys/types.h> |
37 | #include <sys/stat.h> | |
fe51822e | 38 | #include <dirent.h> |
8742514c | 39 | #include <sys/timerfd.h> |
830f6caa LP |
40 | |
41 | #ifdef HAVE_AUDIT | |
4927fcae | 42 | #include <libaudit.h> |
830f6caa | 43 | #endif |
60918275 | 44 | |
877d54e9 LP |
45 | #include "systemd/sd-daemon.h" |
46 | #include "systemd/sd-id128.h" | |
47 | #include "systemd/sd-messages.h" | |
81527be1 | 48 | |
60918275 | 49 | #include "manager.h" |
75778e21 | 50 | #include "transaction.h" |
60918275 LP |
51 | #include "hashmap.h" |
52 | #include "macro.h" | |
53 | #include "strv.h" | |
16354eff | 54 | #include "log.h" |
2a987ee8 | 55 | #include "util.h" |
49e942b2 | 56 | #include "mkdir.h" |
ea430986 | 57 | #include "ratelimit.h" |
8e274523 LP |
58 | #include "cgroup.h" |
59 | #include "mount-setup.h" | |
9e2f7c11 | 60 | #include "unit-name.h" |
4139c1b2 LP |
61 | #include "dbus-unit.h" |
62 | #include "dbus-job.h" | |
1137a57c | 63 | #include "missing.h" |
84e3543e | 64 | #include "path-lookup.h" |
514f4ef5 | 65 | #include "special.h" |
398ef8ba | 66 | #include "bus-errors.h" |
d06dacd0 | 67 | #include "exit-status.h" |
5dc4c17f | 68 | #include "virt.h" |
e96d6be7 | 69 | #include "watchdog.h" |
b59e2465 | 70 | #include "cgroup-util.h" |
9eb977db | 71 | #include "path-util.h" |
c1165f82 | 72 | #include "audit-fd.h" |
2e3d0692 | 73 | #include "efivars.h" |
8b55b8c4 | 74 | #include "env-util.h" |
60918275 | 75 | |
701cc384 LP |
76 | /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */ |
77 | #define GC_QUEUE_ENTRIES_MAX 16 | |
78 | ||
79 | /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */ | |
94b6dfa2 | 80 | #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC) |
701cc384 | 81 | |
8c47c732 | 82 | /* Where clients shall send notification messages to */ |
29252e9e | 83 | #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify" |
8c47c732 | 84 | |
c3e31c7b ZJS |
85 | #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) |
86 | ||
8c47c732 LP |
87 | static int manager_setup_notify(Manager *m) { |
88 | union { | |
89 | struct sockaddr sa; | |
90 | struct sockaddr_un un; | |
91 | } sa; | |
92 | struct epoll_event ev; | |
29252e9e | 93 | int one = 1; |
8c47c732 LP |
94 | |
95 | assert(m); | |
96 | ||
97 | m->notify_watch.type = WATCH_NOTIFY; | |
29252e9e LP |
98 | m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
99 | if (m->notify_watch.fd < 0) { | |
8c47c732 LP |
100 | log_error("Failed to allocate notification socket: %m"); |
101 | return -errno; | |
102 | } | |
103 | ||
104 | zero(sa); | |
105 | sa.sa.sa_family = AF_UNIX; | |
106 | ||
31f92a7d | 107 | if (getpid() != 1 || detect_container(NULL) > 0) |
29252e9e LP |
108 | snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull()); |
109 | else | |
110 | strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path)); | |
8c47c732 | 111 | |
29252e9e | 112 | sa.un.sun_path[0] = 0; |
1d6702e8 | 113 | |
29252e9e | 114 | if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { |
8c47c732 LP |
115 | log_error("bind() failed: %m"); |
116 | return -errno; | |
117 | } | |
118 | ||
119 | if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) { | |
120 | log_error("SO_PASSCRED failed: %m"); | |
121 | return -errno; | |
122 | } | |
123 | ||
124 | zero(ev); | |
125 | ev.events = EPOLLIN; | |
126 | ev.data.ptr = &m->notify_watch; | |
127 | ||
8742514c | 128 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) { |
28137202 | 129 | log_error("Failed to add notification socket fd to epoll: %m"); |
8c47c732 | 130 | return -errno; |
8742514c | 131 | } |
8c47c732 | 132 | |
29252e9e LP |
133 | sa.un.sun_path[0] = '@'; |
134 | m->notify_socket = strdup(sa.un.sun_path); | |
135 | if (!m->notify_socket) | |
8742514c | 136 | return log_oom(); |
8c47c732 | 137 | |
b2bb3dbe LP |
138 | log_debug("Using notification socket %s", m->notify_socket); |
139 | ||
8c47c732 LP |
140 | return 0; |
141 | } | |
142 | ||
8742514c LP |
143 | static int manager_setup_time_change(Manager *m) { |
144 | struct epoll_event ev; | |
145 | struct itimerspec its; | |
146 | ||
147 | assert(m); | |
148 | assert(m->time_change_watch.type == WATCH_INVALID); | |
149 | ||
150 | /* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever | |
151 | * CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */ | |
152 | ||
153 | m->time_change_watch.type = WATCH_TIME_CHANGE; | |
154 | m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC); | |
155 | if (m->time_change_watch.fd < 0) { | |
156 | log_error("Failed to create timerfd: %m"); | |
157 | return -errno; | |
158 | } | |
159 | ||
160 | zero(its); | |
8a3a1704 LP |
161 | |
162 | /* We only care for the cancellation event, hence we set the | |
163 | * timeout to the latest possible value. */ | |
d6a195a3 ZJS |
164 | assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX)); |
165 | its.it_value.tv_sec = TIME_T_MAX; | |
8a3a1704 | 166 | |
8742514c LP |
167 | if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) { |
168 | log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m"); | |
169 | close_nointr_nofail(m->time_change_watch.fd); | |
170 | watch_init(&m->time_change_watch); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | zero(ev); | |
175 | ev.events = EPOLLIN; | |
176 | ev.data.ptr = &m->time_change_watch; | |
177 | ||
178 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) { | |
179 | log_error("Failed to add timer change fd to epoll: %m"); | |
180 | return -errno; | |
181 | } | |
182 | ||
183 | log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd."); | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
80876c20 | 188 | static int enable_special_signals(Manager *m) { |
4466ee6a | 189 | int fd; |
80876c20 LP |
190 | |
191 | assert(m); | |
192 | ||
a41b539e | 193 | /* Enable that we get SIGINT on control-alt-del. In containers |
c9999773 LP |
194 | * this will fail with EPERM (older) or EINVAL (newer), so |
195 | * ignore that. */ | |
196 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL) | |
80876c20 LP |
197 | log_warning("Failed to enable ctrl-alt-del handling: %m"); |
198 | ||
a41b539e LP |
199 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
200 | if (fd < 0) { | |
201 | /* Support systems without virtual console */ | |
202 | if (fd != -ENOENT) | |
203 | log_warning("Failed to open /dev/tty0: %m"); | |
204 | } else { | |
80876c20 LP |
205 | /* Enable that we get SIGWINCH on kbrequest */ |
206 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
207 | log_warning("Failed to enable kbrequest handling: %s", strerror(errno)); | |
208 | ||
209 | close_nointr_nofail(fd); | |
210 | } | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
ce578209 | 215 | static int manager_setup_signals(Manager *m) { |
9152c765 LP |
216 | sigset_t mask; |
217 | struct epoll_event ev; | |
57c0c30e | 218 | struct sigaction sa; |
60918275 | 219 | |
ce578209 LP |
220 | assert(m); |
221 | ||
57c0c30e LP |
222 | /* We are not interested in SIGSTOP and friends. */ |
223 | zero(sa); | |
224 | sa.sa_handler = SIG_DFL; | |
225 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
226 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
227 | ||
ce578209 | 228 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
229 | |
230 | sigset_add_many(&mask, | |
231 | SIGCHLD, /* Child died */ | |
232 | SIGTERM, /* Reexecute daemon */ | |
233 | SIGHUP, /* Reload configuration */ | |
234 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
235 | SIGUSR2, /* systemd: dump status */ | |
236 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
237 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
238 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
239 | SIGRTMIN+0, /* systemd: start default.target */ | |
0003d1ab | 240 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
241 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
242 | SIGRTMIN+3, /* systemd: start halt.target */ | |
243 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
244 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab LP |
245 | SIGRTMIN+6, /* systemd: start kexec.target */ |
246 | SIGRTMIN+13, /* systemd: Immediate halt */ | |
247 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
248 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
249 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
0658666b LP |
250 | SIGRTMIN+20, /* systemd: enable status messages */ |
251 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
252 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
253 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
600b704e | 254 | SIGRTMIN+24, /* systemd: Immediate exit (--user only) */ |
4cfa2c99 | 255 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
256 | SIGRTMIN+27, /* systemd: set log target to console */ |
257 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
258 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */ | |
7d793605 | 259 | -1); |
ce578209 LP |
260 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
261 | ||
ef734fd6 | 262 | m->signal_watch.type = WATCH_SIGNAL; |
8742514c LP |
263 | m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); |
264 | if (m->signal_watch.fd < 0) | |
ce578209 LP |
265 | return -errno; |
266 | ||
267 | zero(ev); | |
268 | ev.events = EPOLLIN; | |
269 | ev.data.ptr = &m->signal_watch; | |
270 | ||
271 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0) | |
272 | return -errno; | |
273 | ||
67445f4e | 274 | if (m->running_as == SYSTEMD_SYSTEM) |
80876c20 | 275 | return enable_special_signals(m); |
e1414003 | 276 | |
ce578209 LP |
277 | return 0; |
278 | } | |
279 | ||
71ecc858 LP |
280 | static void manager_strip_environment(Manager *m) { |
281 | assert(m); | |
282 | ||
283 | /* Remove variables from the inherited set that are part of | |
284 | * the container interface: | |
285 | * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */ | |
286 | strv_remove_prefix(m->environment, "container="); | |
287 | strv_remove_prefix(m->environment, "container_"); | |
288 | ||
289 | /* Remove variables from the inherited set that are part of | |
290 | * the initrd interface: | |
291 | * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */ | |
292 | strv_remove_prefix(m->environment, "RD_"); | |
8b55b8c4 LP |
293 | |
294 | /* Drop invalid entries */ | |
295 | strv_env_clean(m->environment); | |
71ecc858 LP |
296 | } |
297 | ||
67445f4e | 298 | int manager_new(SystemdRunningAs running_as, Manager **_m) { |
ce578209 | 299 | Manager *m; |
8e274523 LP |
300 | int r = -ENOMEM; |
301 | ||
302 | assert(_m); | |
a5dab5ce | 303 | assert(running_as >= 0); |
67445f4e | 304 | assert(running_as < _SYSTEMD_RUNNING_AS_MAX); |
ce578209 | 305 | |
915b3753 LP |
306 | m = new0(Manager, 1); |
307 | if (!m) | |
8e274523 | 308 | return -ENOMEM; |
60918275 | 309 | |
915b3753 | 310 | dual_timestamp_get(&m->userspace_timestamp); |
cae0c5e0 | 311 | dual_timestamp_from_monotonic(&m->kernel_timestamp, 0); |
b872e9a0 | 312 | #ifdef ENABLE_EFI |
2e3d0692 | 313 | efi_get_boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp); |
b872e9a0 | 314 | #endif |
e537352b | 315 | |
a5dab5ce | 316 | m->running_as = running_as; |
cbd37330 | 317 | m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1; |
a16e1123 | 318 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
33be102a | 319 | m->pin_cgroupfs_fd = -1; |
f2b68789 | 320 | m->idle_pipe[0] = m->idle_pipe[1] = -1; |
80876c20 | 321 | |
8742514c LP |
322 | watch_init(&m->signal_watch); |
323 | watch_init(&m->mount_watch); | |
324 | watch_init(&m->swap_watch); | |
325 | watch_init(&m->udev_watch); | |
326 | watch_init(&m->time_change_watch); | |
327 | ||
328 | m->epoll_fd = m->dev_autofs_fd = -1; | |
ea430986 | 329 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 330 | |
71ecc858 LP |
331 | m->environment = strv_copy(environ); |
332 | if (!m->environment) | |
1137a57c LP |
333 | goto fail; |
334 | ||
71ecc858 LP |
335 | manager_strip_environment(m); |
336 | ||
67445f4e | 337 | if (running_as == SYSTEMD_SYSTEM) { |
88f06645 LP |
338 | m->default_controllers = strv_new("cpu", NULL); |
339 | if (!m->default_controllers) | |
340 | goto fail; | |
341 | } | |
06d4c99a | 342 | |
87f0e418 | 343 | if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) |
60918275 LP |
344 | goto fail; |
345 | ||
346 | if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) | |
347 | goto fail; | |
348 | ||
9152c765 LP |
349 | if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) |
350 | goto fail; | |
351 | ||
8e274523 LP |
352 | if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func))) |
353 | goto fail; | |
354 | ||
05e343b7 LP |
355 | if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func))) |
356 | goto fail; | |
357 | ||
8742514c LP |
358 | m->epoll_fd = epoll_create1(EPOLL_CLOEXEC); |
359 | if (m->epoll_fd < 0) | |
360 | goto fail; | |
361 | ||
362 | r = manager_setup_signals(m); | |
363 | if (r < 0) | |
9152c765 LP |
364 | goto fail; |
365 | ||
8742514c LP |
366 | r = manager_setup_cgroup(m); |
367 | if (r < 0) | |
8e274523 LP |
368 | goto fail; |
369 | ||
8742514c LP |
370 | r = manager_setup_notify(m); |
371 | if (r < 0) | |
9152c765 LP |
372 | goto fail; |
373 | ||
8742514c LP |
374 | r = manager_setup_time_change(m); |
375 | if (r < 0) | |
8c47c732 LP |
376 | goto fail; |
377 | ||
f278026d | 378 | /* Try to connect to the busses, if possible. */ |
8742514c LP |
379 | r = bus_init(m, running_as != SYSTEMD_SYSTEM); |
380 | if (r < 0) | |
ea430986 LP |
381 | goto fail; |
382 | ||
72bc8d00 LP |
383 | m->taint_usr = dir_is_empty("/usr") > 0; |
384 | ||
8e274523 LP |
385 | *_m = m; |
386 | return 0; | |
60918275 LP |
387 | |
388 | fail: | |
389 | manager_free(m); | |
8e274523 | 390 | return r; |
60918275 LP |
391 | } |
392 | ||
23a177ef | 393 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 394 | Unit *u; |
23a177ef LP |
395 | unsigned n = 0; |
396 | ||
397 | assert(m); | |
398 | ||
595ed347 MS |
399 | while ((u = m->cleanup_queue)) { |
400 | assert(u->in_cleanup_queue); | |
23a177ef | 401 | |
595ed347 | 402 | unit_free(u); |
23a177ef LP |
403 | n++; |
404 | } | |
405 | ||
406 | return n; | |
407 | } | |
408 | ||
eced69b3 | 409 | enum { |
35b8ca3a | 410 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
411 | GC_OFFSET_UNSURE, /* No clue */ |
412 | GC_OFFSET_GOOD, /* We still need this unit */ | |
413 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
414 | _GC_OFFSET_MAX | |
415 | }; | |
416 | ||
417 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { | |
701cc384 LP |
418 | Iterator i; |
419 | Unit *other; | |
eced69b3 | 420 | bool is_bad; |
701cc384 LP |
421 | |
422 | assert(u); | |
423 | ||
ac155bb8 MS |
424 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
425 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
426 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) | |
701cc384 LP |
427 | return; |
428 | ||
ac155bb8 | 429 | if (u->in_cleanup_queue) |
701cc384 LP |
430 | goto bad; |
431 | ||
432 | if (unit_check_gc(u)) | |
433 | goto good; | |
434 | ||
ac155bb8 | 435 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
436 | |
437 | is_bad = true; | |
438 | ||
ac155bb8 | 439 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
440 | unit_gc_sweep(other, gc_marker); |
441 | ||
ac155bb8 | 442 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 443 | goto good; |
eced69b3 | 444 | |
ac155bb8 | 445 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 446 | is_bad = false; |
701cc384 LP |
447 | } |
448 | ||
eced69b3 LP |
449 | if (is_bad) |
450 | goto bad; | |
451 | ||
452 | /* We were unable to find anything out about this entry, so | |
453 | * let's investigate it later */ | |
ac155bb8 | 454 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
455 | unit_add_to_gc_queue(u); |
456 | return; | |
457 | ||
701cc384 | 458 | bad: |
eced69b3 LP |
459 | /* We definitely know that this one is not useful anymore, so |
460 | * let's mark it for deletion */ | |
ac155bb8 | 461 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 462 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
463 | return; |
464 | ||
465 | good: | |
ac155bb8 | 466 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; |
701cc384 LP |
467 | } |
468 | ||
469 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
595ed347 | 470 | Unit *u; |
701cc384 | 471 | unsigned n = 0; |
eced69b3 | 472 | unsigned gc_marker; |
701cc384 LP |
473 | |
474 | assert(m); | |
475 | ||
476 | if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) && | |
477 | (m->gc_queue_timestamp <= 0 || | |
478 | (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC))) | |
479 | return 0; | |
480 | ||
481 | log_debug("Running GC..."); | |
482 | ||
eced69b3 LP |
483 | m->gc_marker += _GC_OFFSET_MAX; |
484 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 485 | m->gc_marker = 1; |
701cc384 | 486 | |
eced69b3 LP |
487 | gc_marker = m->gc_marker; |
488 | ||
595ed347 MS |
489 | while ((u = m->gc_queue)) { |
490 | assert(u->in_gc_queue); | |
701cc384 | 491 | |
595ed347 | 492 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 493 | |
595ed347 MS |
494 | LIST_REMOVE(Unit, gc_queue, m->gc_queue, u); |
495 | u->in_gc_queue = false; | |
701cc384 LP |
496 | |
497 | n++; | |
498 | ||
595ed347 MS |
499 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
500 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
66870f90 | 501 | log_debug_unit(u->id, "Collecting %s", u->id); |
595ed347 MS |
502 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
503 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
504 | } |
505 | } | |
506 | ||
507 | m->n_in_gc_queue = 0; | |
508 | m->gc_queue_timestamp = 0; | |
509 | ||
510 | return n; | |
511 | } | |
512 | ||
a16e1123 | 513 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 514 | Unit *u; |
60918275 LP |
515 | |
516 | assert(m); | |
517 | ||
87f0e418 LP |
518 | while ((u = hashmap_first(m->units))) |
519 | unit_free(u); | |
964e0949 LP |
520 | |
521 | manager_dispatch_cleanup_queue(m); | |
522 | ||
523 | assert(!m->load_queue); | |
524 | assert(!m->run_queue); | |
525 | assert(!m->dbus_unit_queue); | |
526 | assert(!m->dbus_job_queue); | |
527 | assert(!m->cleanup_queue); | |
528 | assert(!m->gc_queue); | |
529 | ||
964e0949 LP |
530 | assert(hashmap_isempty(m->jobs)); |
531 | assert(hashmap_isempty(m->units)); | |
a16e1123 LP |
532 | } |
533 | ||
534 | void manager_free(Manager *m) { | |
535 | UnitType c; | |
c93ff2e9 | 536 | int i; |
87f0e418 | 537 | |
a16e1123 LP |
538 | assert(m); |
539 | ||
540 | manager_clear_jobs_and_units(m); | |
23a177ef | 541 | |
7824bbeb LP |
542 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
543 | if (unit_vtable[c]->shutdown) | |
544 | unit_vtable[c]->shutdown(m); | |
545 | ||
a16e1123 LP |
546 | /* If we reexecute ourselves, we keep the root cgroup |
547 | * around */ | |
c6c18be3 | 548 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 549 | |
5a1e9937 LP |
550 | manager_undo_generators(m); |
551 | ||
5e8d1c9a | 552 | bus_done(m); |
ea430986 | 553 | |
87f0e418 | 554 | hashmap_free(m->units); |
60918275 | 555 | hashmap_free(m->jobs); |
9152c765 | 556 | hashmap_free(m->watch_pids); |
05e343b7 | 557 | hashmap_free(m->watch_bus); |
9152c765 LP |
558 | |
559 | if (m->epoll_fd >= 0) | |
a16e1123 | 560 | close_nointr_nofail(m->epoll_fd); |
acbb0225 | 561 | if (m->signal_watch.fd >= 0) |
a16e1123 | 562 | close_nointr_nofail(m->signal_watch.fd); |
8c47c732 LP |
563 | if (m->notify_watch.fd >= 0) |
564 | close_nointr_nofail(m->notify_watch.fd); | |
8742514c LP |
565 | if (m->time_change_watch.fd >= 0) |
566 | close_nointr_nofail(m->time_change_watch.fd); | |
60918275 | 567 | |
c952c6ec LP |
568 | free(m->notify_socket); |
569 | ||
84e3543e | 570 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 571 | strv_free(m->environment); |
036643a2 | 572 | |
06d4c99a LP |
573 | strv_free(m->default_controllers); |
574 | ||
8e274523 | 575 | hashmap_free(m->cgroup_bondings); |
c6c18be3 | 576 | set_free_free(m->unit_path_cache); |
33be102a | 577 | |
f2b68789 LP |
578 | close_pipe(m->idle_pipe); |
579 | ||
664f88a7 LP |
580 | free(m->switch_root); |
581 | free(m->switch_root_init); | |
582 | ||
c93ff2e9 FC |
583 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
584 | free(m->rlimit[i]); | |
585 | ||
60918275 LP |
586 | free(m); |
587 | } | |
588 | ||
a16e1123 LP |
589 | int manager_enumerate(Manager *m) { |
590 | int r = 0, q; | |
f50e0a01 | 591 | UnitType c; |
f50e0a01 LP |
592 | |
593 | assert(m); | |
594 | ||
a16e1123 LP |
595 | /* Let's ask every type to load all units from disk/kernel |
596 | * that it might know */ | |
f50e0a01 LP |
597 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
598 | if (unit_vtable[c]->enumerate) | |
a16e1123 LP |
599 | if ((q = unit_vtable[c]->enumerate(m)) < 0) |
600 | r = q; | |
f50e0a01 LP |
601 | |
602 | manager_dispatch_load_queue(m); | |
a16e1123 LP |
603 | return r; |
604 | } | |
605 | ||
606 | int manager_coldplug(Manager *m) { | |
607 | int r = 0, q; | |
608 | Iterator i; | |
609 | Unit *u; | |
610 | char *k; | |
611 | ||
612 | assert(m); | |
f50e0a01 LP |
613 | |
614 | /* Then, let's set up their initial state. */ | |
615 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
616 | ||
617 | /* ignore aliases */ | |
ac155bb8 | 618 | if (u->id != k) |
f50e0a01 LP |
619 | continue; |
620 | ||
cca098b0 LP |
621 | if ((q = unit_coldplug(u)) < 0) |
622 | r = q; | |
f50e0a01 LP |
623 | } |
624 | ||
a16e1123 LP |
625 | return r; |
626 | } | |
627 | ||
fe51822e LP |
628 | static void manager_build_unit_path_cache(Manager *m) { |
629 | char **i; | |
874310b7 | 630 | DIR _cleanup_free_ *d = NULL; |
fe51822e LP |
631 | int r; |
632 | ||
633 | assert(m); | |
634 | ||
635 | set_free_free(m->unit_path_cache); | |
636 | ||
874310b7 ZJS |
637 | m->unit_path_cache = set_new(string_hash_func, string_compare_func); |
638 | if (!m->unit_path_cache) { | |
fe51822e LP |
639 | log_error("Failed to allocate unit path cache."); |
640 | return; | |
641 | } | |
642 | ||
643 | /* This simply builds a list of files we know exist, so that | |
644 | * we don't always have to go to disk */ | |
645 | ||
646 | STRV_FOREACH(i, m->lookup_paths.unit_path) { | |
647 | struct dirent *de; | |
648 | ||
bd0af849 ZJS |
649 | d = opendir(*i); |
650 | if (!d) { | |
874310b7 ZJS |
651 | if (errno != ENOENT) |
652 | log_error("Failed to open directory %s: %m", *i); | |
fe51822e LP |
653 | continue; |
654 | } | |
655 | ||
656 | while ((de = readdir(d))) { | |
657 | char *p; | |
658 | ||
659 | if (ignore_file(de->d_name)) | |
660 | continue; | |
661 | ||
b7def684 | 662 | p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
44d91056 | 663 | if (!p) { |
fe51822e LP |
664 | r = -ENOMEM; |
665 | goto fail; | |
666 | } | |
667 | ||
874310b7 ZJS |
668 | r = set_put(m->unit_path_cache, p); |
669 | if (r < 0) { | |
fe51822e LP |
670 | free(p); |
671 | goto fail; | |
672 | } | |
673 | } | |
674 | ||
675 | closedir(d); | |
676 | d = NULL; | |
677 | } | |
678 | ||
679 | return; | |
680 | ||
681 | fail: | |
682 | log_error("Failed to build unit path cache: %s", strerror(-r)); | |
683 | ||
684 | set_free_free(m->unit_path_cache); | |
685 | m->unit_path_cache = NULL; | |
fe51822e LP |
686 | } |
687 | ||
a16e1123 LP |
688 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
689 | int r, q; | |
690 | ||
691 | assert(m); | |
692 | ||
5a1e9937 LP |
693 | manager_run_generators(m); |
694 | ||
07719a21 LP |
695 | r = lookup_paths_init( |
696 | &m->lookup_paths, m->running_as, true, | |
697 | m->generator_unit_path, | |
698 | m->generator_unit_path_early, | |
699 | m->generator_unit_path_late); | |
700 | if (r < 0) | |
701 | return r; | |
702 | ||
fe51822e LP |
703 | manager_build_unit_path_cache(m); |
704 | ||
9f611ad8 LP |
705 | /* If we will deserialize make sure that during enumeration |
706 | * this is already known, so we increase the counter here | |
707 | * already */ | |
708 | if (serialization) | |
a7556052 | 709 | m->n_reloading ++; |
9f611ad8 | 710 | |
a16e1123 LP |
711 | /* First, enumerate what we can from all config files */ |
712 | r = manager_enumerate(m); | |
713 | ||
714 | /* Second, deserialize if there is something to deserialize */ | |
07719a21 LP |
715 | if (serialization) { |
716 | q = manager_deserialize(m, serialization, fds); | |
717 | if (q < 0) | |
a16e1123 | 718 | r = q; |
07719a21 | 719 | } |
a16e1123 | 720 | |
01e10de3 LP |
721 | /* Any fds left? Find some unit which wants them. This is |
722 | * useful to allow container managers to pass some file | |
723 | * descriptors to us pre-initialized. This enables | |
724 | * socket-based activation of entire containers. */ | |
725 | if (fdset_size(fds) > 0) { | |
726 | q = manager_distribute_fds(m, fds); | |
727 | if (q < 0) | |
728 | r = q; | |
729 | } | |
730 | ||
a16e1123 | 731 | /* Third, fire things up! */ |
07719a21 LP |
732 | q = manager_coldplug(m); |
733 | if (q < 0) | |
a16e1123 LP |
734 | r = q; |
735 | ||
9f611ad8 | 736 | if (serialization) { |
a7556052 LP |
737 | assert(m->n_reloading > 0); |
738 | m->n_reloading --; | |
9f611ad8 LP |
739 | } |
740 | ||
a16e1123 | 741 | return r; |
f50e0a01 LP |
742 | } |
743 | ||
398ef8ba | 744 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { |
e5b5ae50 | 745 | int r; |
7527cb52 | 746 | Transaction *tr; |
e5b5ae50 LP |
747 | |
748 | assert(m); | |
749 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 750 | assert(unit); |
e5b5ae50 | 751 | assert(mode < _JOB_MODE_MAX); |
60918275 | 752 | |
398ef8ba LP |
753 | if (mode == JOB_ISOLATE && type != JOB_START) { |
754 | dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); | |
c497c7a9 | 755 | return -EINVAL; |
398ef8ba | 756 | } |
c497c7a9 | 757 | |
ac155bb8 | 758 | if (mode == JOB_ISOLATE && !unit->allow_isolate) { |
2528a7a6 LP |
759 | dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
760 | return -EPERM; | |
761 | } | |
762 | ||
66870f90 ZJS |
763 | log_debug_unit(unit->id, |
764 | "Trying to enqueue job %s/%s/%s", unit->id, | |
765 | job_type_to_string(type), job_mode_to_string(mode)); | |
9f04bd52 | 766 | |
e0209d83 MS |
767 | job_type_collapse(&type, unit); |
768 | ||
23ade460 | 769 | tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY); |
7527cb52 MS |
770 | if (!tr) |
771 | return -ENOMEM; | |
11dd41ce | 772 | |
7527cb52 MS |
773 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false, |
774 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
b94fbd30 | 775 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
776 | if (r < 0) |
777 | goto tr_abort; | |
c497c7a9 | 778 | |
7527cb52 MS |
779 | if (mode == JOB_ISOLATE) { |
780 | r = transaction_add_isolate_jobs(tr, m); | |
781 | if (r < 0) | |
782 | goto tr_abort; | |
783 | } | |
784 | ||
785 | r = transaction_activate(tr, m, mode, e); | |
786 | if (r < 0) | |
787 | goto tr_abort; | |
e5b5ae50 | 788 | |
66870f90 ZJS |
789 | log_debug_unit(unit->id, |
790 | "Enqueued job %s/%s as %u", unit->id, | |
791 | job_type_to_string(type), (unsigned) tr->anchor_job->id); | |
f50e0a01 | 792 | |
e5b5ae50 | 793 | if (_ret) |
b94fbd30 | 794 | *_ret = tr->anchor_job; |
60918275 | 795 | |
7527cb52 | 796 | transaction_free(tr); |
e5b5ae50 | 797 | return 0; |
7527cb52 MS |
798 | |
799 | tr_abort: | |
800 | transaction_abort(tr); | |
801 | transaction_free(tr); | |
802 | return r; | |
e5b5ae50 | 803 | } |
60918275 | 804 | |
398ef8ba | 805 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { |
28247076 LP |
806 | Unit *unit; |
807 | int r; | |
808 | ||
809 | assert(m); | |
810 | assert(type < _JOB_TYPE_MAX); | |
811 | assert(name); | |
812 | assert(mode < _JOB_MODE_MAX); | |
813 | ||
c3090674 LP |
814 | r = manager_load_unit(m, name, NULL, NULL, &unit); |
815 | if (r < 0) | |
28247076 LP |
816 | return r; |
817 | ||
398ef8ba | 818 | return manager_add_job(m, type, unit, mode, override, e, _ret); |
28247076 LP |
819 | } |
820 | ||
60918275 LP |
821 | Job *manager_get_job(Manager *m, uint32_t id) { |
822 | assert(m); | |
823 | ||
824 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
825 | } | |
826 | ||
87f0e418 | 827 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
828 | assert(m); |
829 | assert(name); | |
830 | ||
87f0e418 | 831 | return hashmap_get(m->units, name); |
60918275 LP |
832 | } |
833 | ||
c1e1601e | 834 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 835 | Unit *u; |
c1e1601e | 836 | unsigned n = 0; |
60918275 LP |
837 | |
838 | assert(m); | |
839 | ||
223dabab LP |
840 | /* Make sure we are not run recursively */ |
841 | if (m->dispatching_load_queue) | |
c1e1601e | 842 | return 0; |
223dabab LP |
843 | |
844 | m->dispatching_load_queue = true; | |
845 | ||
87f0e418 | 846 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
847 | * tries to load its data until the queue is empty */ |
848 | ||
595ed347 MS |
849 | while ((u = m->load_queue)) { |
850 | assert(u->in_load_queue); | |
034c6ed7 | 851 | |
595ed347 | 852 | unit_load(u); |
c1e1601e | 853 | n++; |
60918275 LP |
854 | } |
855 | ||
223dabab | 856 | m->dispatching_load_queue = false; |
c1e1601e | 857 | return n; |
60918275 LP |
858 | } |
859 | ||
398ef8ba | 860 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
87f0e418 | 861 | Unit *ret; |
7d17cfbc | 862 | UnitType t; |
60918275 LP |
863 | int r; |
864 | ||
865 | assert(m); | |
9e2f7c11 | 866 | assert(name || path); |
60918275 | 867 | |
db06e3b6 LP |
868 | /* This will prepare the unit for loading, but not actually |
869 | * load anything from disk. */ | |
0301abf4 | 870 | |
398ef8ba LP |
871 | if (path && !is_path(path)) { |
872 | dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); | |
9e2f7c11 | 873 | return -EINVAL; |
398ef8ba | 874 | } |
9e2f7c11 LP |
875 | |
876 | if (!name) | |
9eb977db | 877 | name = path_get_file_name(path); |
9e2f7c11 | 878 | |
7d17cfbc MS |
879 | t = unit_name_to_type(name); |
880 | ||
5f739699 | 881 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) { |
398ef8ba | 882 | dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); |
9e2f7c11 | 883 | return -EINVAL; |
398ef8ba | 884 | } |
60918275 | 885 | |
7d17cfbc MS |
886 | ret = manager_get_unit(m, name); |
887 | if (ret) { | |
034c6ed7 | 888 | *_ret = ret; |
413d6313 | 889 | return 1; |
034c6ed7 | 890 | } |
60918275 | 891 | |
7d17cfbc MS |
892 | ret = unit_new(m, unit_vtable[t]->object_size); |
893 | if (!ret) | |
60918275 LP |
894 | return -ENOMEM; |
895 | ||
7d17cfbc | 896 | if (path) { |
ac155bb8 MS |
897 | ret->fragment_path = strdup(path); |
898 | if (!ret->fragment_path) { | |
0301abf4 LP |
899 | unit_free(ret); |
900 | return -ENOMEM; | |
901 | } | |
7d17cfbc | 902 | } |
0301abf4 | 903 | |
87f0e418 LP |
904 | if ((r = unit_add_name(ret, name)) < 0) { |
905 | unit_free(ret); | |
1ffba6fe | 906 | return r; |
60918275 LP |
907 | } |
908 | ||
87f0e418 | 909 | unit_add_to_load_queue(ret); |
c1e1601e | 910 | unit_add_to_dbus_queue(ret); |
949061f0 | 911 | unit_add_to_gc_queue(ret); |
c1e1601e | 912 | |
db06e3b6 LP |
913 | if (_ret) |
914 | *_ret = ret; | |
915 | ||
916 | return 0; | |
917 | } | |
918 | ||
398ef8ba | 919 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
db06e3b6 LP |
920 | int r; |
921 | ||
922 | assert(m); | |
923 | ||
924 | /* This will load the service information files, but not actually | |
925 | * start any services or anything. */ | |
926 | ||
c3090674 LP |
927 | r = manager_load_unit_prepare(m, name, path, e, _ret); |
928 | if (r != 0) | |
db06e3b6 LP |
929 | return r; |
930 | ||
f50e0a01 | 931 | manager_dispatch_load_queue(m); |
60918275 | 932 | |
9e2f7c11 | 933 | if (_ret) |
413d6313 | 934 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 935 | |
60918275 LP |
936 | return 0; |
937 | } | |
a66d02c3 | 938 | |
cea8e32e | 939 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 940 | Iterator i; |
a66d02c3 LP |
941 | Job *j; |
942 | ||
943 | assert(s); | |
944 | assert(f); | |
945 | ||
034c6ed7 | 946 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 947 | job_dump(j, f, prefix); |
a66d02c3 LP |
948 | } |
949 | ||
87f0e418 | 950 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 951 | Iterator i; |
87f0e418 | 952 | Unit *u; |
11dd41ce | 953 | const char *t; |
a66d02c3 LP |
954 | |
955 | assert(s); | |
956 | assert(f); | |
957 | ||
87f0e418 | 958 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 959 | if (u->id == t) |
87f0e418 | 960 | unit_dump(u, f, prefix); |
a66d02c3 | 961 | } |
7fad411c LP |
962 | |
963 | void manager_clear_jobs(Manager *m) { | |
964 | Job *j; | |
965 | ||
966 | assert(m); | |
967 | ||
7fad411c | 968 | while ((j = hashmap_first(m->jobs))) |
5273510e MS |
969 | /* No need to recurse. We're cancelling all jobs. */ |
970 | job_finish_and_invalidate(j, JOB_CANCELED, false); | |
7fad411c | 971 | } |
83c60c9f | 972 | |
c1e1601e | 973 | unsigned manager_dispatch_run_queue(Manager *m) { |
83c60c9f | 974 | Job *j; |
c1e1601e | 975 | unsigned n = 0; |
83c60c9f | 976 | |
034c6ed7 | 977 | if (m->dispatching_run_queue) |
c1e1601e | 978 | return 0; |
034c6ed7 LP |
979 | |
980 | m->dispatching_run_queue = true; | |
9152c765 | 981 | |
034c6ed7 | 982 | while ((j = m->run_queue)) { |
ac1135be | 983 | assert(j->installed); |
034c6ed7 LP |
984 | assert(j->in_run_queue); |
985 | ||
986 | job_run_and_invalidate(j); | |
c1e1601e | 987 | n++; |
9152c765 | 988 | } |
034c6ed7 LP |
989 | |
990 | m->dispatching_run_queue = false; | |
c1e1601e LP |
991 | return n; |
992 | } | |
993 | ||
994 | unsigned manager_dispatch_dbus_queue(Manager *m) { | |
995 | Job *j; | |
595ed347 | 996 | Unit *u; |
c1e1601e LP |
997 | unsigned n = 0; |
998 | ||
999 | assert(m); | |
1000 | ||
1001 | if (m->dispatching_dbus_queue) | |
1002 | return 0; | |
1003 | ||
1004 | m->dispatching_dbus_queue = true; | |
1005 | ||
595ed347 MS |
1006 | while ((u = m->dbus_unit_queue)) { |
1007 | assert(u->in_dbus_queue); | |
c1e1601e | 1008 | |
595ed347 | 1009 | bus_unit_send_change_signal(u); |
c1e1601e LP |
1010 | n++; |
1011 | } | |
1012 | ||
1013 | while ((j = m->dbus_job_queue)) { | |
1014 | assert(j->in_dbus_queue); | |
1015 | ||
1016 | bus_job_send_change_signal(j); | |
1017 | n++; | |
1018 | } | |
1019 | ||
1020 | m->dispatching_dbus_queue = false; | |
1021 | return n; | |
9152c765 LP |
1022 | } |
1023 | ||
8c47c732 LP |
1024 | static int manager_process_notify_fd(Manager *m) { |
1025 | ssize_t n; | |
1026 | ||
1027 | assert(m); | |
1028 | ||
1029 | for (;;) { | |
1030 | char buf[4096]; | |
1031 | struct msghdr msghdr; | |
1032 | struct iovec iovec; | |
1033 | struct ucred *ucred; | |
1034 | union { | |
1035 | struct cmsghdr cmsghdr; | |
1036 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred))]; | |
1037 | } control; | |
1038 | Unit *u; | |
1039 | char **tags; | |
1040 | ||
1041 | zero(iovec); | |
1042 | iovec.iov_base = buf; | |
1043 | iovec.iov_len = sizeof(buf)-1; | |
1044 | ||
1045 | zero(control); | |
1046 | zero(msghdr); | |
1047 | msghdr.msg_iov = &iovec; | |
1048 | msghdr.msg_iovlen = 1; | |
1049 | msghdr.msg_control = &control; | |
1050 | msghdr.msg_controllen = sizeof(control); | |
1051 | ||
bd0af849 ZJS |
1052 | n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT); |
1053 | if (n <= 0) { | |
8c47c732 LP |
1054 | if (n >= 0) |
1055 | return -EIO; | |
1056 | ||
f6144808 | 1057 | if (errno == EAGAIN || errno == EINTR) |
8c47c732 LP |
1058 | break; |
1059 | ||
1060 | return -errno; | |
1061 | } | |
1062 | ||
1063 | if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) || | |
1064 | control.cmsghdr.cmsg_level != SOL_SOCKET || | |
1065 | control.cmsghdr.cmsg_type != SCM_CREDENTIALS || | |
1066 | control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) { | |
1067 | log_warning("Received notify message without credentials. Ignoring."); | |
1068 | continue; | |
1069 | } | |
1070 | ||
1071 | ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); | |
1072 | ||
bd0af849 ZJS |
1073 | u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)); |
1074 | if (!u) { | |
1075 | u = cgroup_unit_by_pid(m, ucred->pid); | |
1076 | if (!u) { | |
8c47c732 LP |
1077 | log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); |
1078 | continue; | |
1079 | } | |
bd0af849 | 1080 | } |
8c47c732 | 1081 | |
8c40acf7 LP |
1082 | assert((size_t) n < sizeof(buf)); |
1083 | buf[n] = 0; | |
bd0af849 ZJS |
1084 | tags = strv_split(buf, "\n\r"); |
1085 | if (!tags) | |
1086 | return log_oom(); | |
8c47c732 | 1087 | |
66870f90 | 1088 | log_debug_unit(u->id, "Got notification message for unit %s", u->id); |
8c47c732 LP |
1089 | |
1090 | if (UNIT_VTABLE(u)->notify_message) | |
c952c6ec | 1091 | UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); |
8c47c732 LP |
1092 | |
1093 | strv_free(tags); | |
1094 | } | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
034c6ed7 | 1099 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1100 | assert(m); |
1101 | ||
1102 | for (;;) { | |
1103 | siginfo_t si; | |
87f0e418 | 1104 | Unit *u; |
8c47c732 | 1105 | int r; |
9152c765 LP |
1106 | |
1107 | zero(si); | |
4112df16 LP |
1108 | |
1109 | /* First we call waitd() for a PID and do not reap the | |
1110 | * zombie. That way we can still access /proc/$PID for | |
1111 | * it while it is a zombie. */ | |
1112 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1113 | |
1114 | if (errno == ECHILD) | |
1115 | break; | |
1116 | ||
4112df16 LP |
1117 | if (errno == EINTR) |
1118 | continue; | |
1119 | ||
9152c765 | 1120 | return -errno; |
acbb0225 | 1121 | } |
9152c765 | 1122 | |
4112df16 | 1123 | if (si.si_pid <= 0) |
9152c765 LP |
1124 | break; |
1125 | ||
15d5d9d9 | 1126 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
bd0af849 | 1127 | char _cleanup_free_ *name = NULL; |
4112df16 | 1128 | |
87d2c1ff | 1129 | get_process_comm(si.si_pid, &name); |
bb00e604 | 1130 | log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); |
4112df16 LP |
1131 | } |
1132 | ||
8c47c732 LP |
1133 | /* Let's flush any message the dying child might still |
1134 | * have queued for us. This ensures that the process | |
1135 | * still exists in /proc so that we can figure out | |
1136 | * which cgroup and hence unit it belongs to. */ | |
bd0af849 ZJS |
1137 | r = manager_process_notify_fd(m); |
1138 | if (r < 0) | |
8c47c732 LP |
1139 | return r; |
1140 | ||
1141 | /* And now figure out the unit this belongs to */ | |
bd0af849 ZJS |
1142 | u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
1143 | if (!u) | |
8c47c732 LP |
1144 | u = cgroup_unit_by_pid(m, si.si_pid); |
1145 | ||
4112df16 LP |
1146 | /* And now, we actually reap the zombie. */ |
1147 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1148 | if (errno == EINTR) | |
1149 | continue; | |
1150 | ||
1151 | return -errno; | |
1152 | } | |
1153 | ||
034c6ed7 LP |
1154 | if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) |
1155 | continue; | |
1156 | ||
bb00e604 LP |
1157 | log_debug("Child %lu died (code=%s, status=%i/%s)", |
1158 | (long unsigned) si.si_pid, | |
4112df16 LP |
1159 | sigchld_code_to_string(si.si_code), |
1160 | si.si_status, | |
d06dacd0 LP |
1161 | strna(si.si_code == CLD_EXITED |
1162 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1163 | : signal_to_string(si.si_status))); | |
acbb0225 | 1164 | |
8c47c732 | 1165 | if (!u) |
9152c765 LP |
1166 | continue; |
1167 | ||
66870f90 ZJS |
1168 | log_debug_unit(u->id, |
1169 | "Child %lu belongs to %s", (long unsigned) si.si_pid, u->id); | |
6c1a0478 | 1170 | |
c6c18be3 | 1171 | hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
87f0e418 | 1172 | UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); |
9152c765 LP |
1173 | } |
1174 | ||
1175 | return 0; | |
1176 | } | |
1177 | ||
7d793605 | 1178 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
28247076 | 1179 | int r; |
398ef8ba LP |
1180 | DBusError error; |
1181 | ||
1182 | dbus_error_init(&error); | |
1183 | ||
66870f90 | 1184 | log_debug_unit(name, "Activating special unit %s", name); |
1e001f52 | 1185 | |
bd0af849 ZJS |
1186 | r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL); |
1187 | if (r < 0) | |
66870f90 ZJS |
1188 | log_error_unit(name, |
1189 | "Failed to enqueue %s job: %s", name, bus_error(&error, r)); | |
28247076 | 1190 | |
398ef8ba | 1191 | dbus_error_free(&error); |
a1b256b0 LP |
1192 | |
1193 | return r; | |
28247076 LP |
1194 | } |
1195 | ||
a16e1123 | 1196 | static int manager_process_signal_fd(Manager *m) { |
9152c765 LP |
1197 | ssize_t n; |
1198 | struct signalfd_siginfo sfsi; | |
1199 | bool sigchld = false; | |
1200 | ||
1201 | assert(m); | |
1202 | ||
1203 | for (;;) { | |
57cb4adf LP |
1204 | n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi)); |
1205 | if (n != sizeof(sfsi)) { | |
9152c765 LP |
1206 | |
1207 | if (n >= 0) | |
1208 | return -EIO; | |
1209 | ||
63090775 | 1210 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 1211 | break; |
9152c765 LP |
1212 | |
1213 | return -errno; | |
1214 | } | |
1215 | ||
67370238 LP |
1216 | if (sfsi.ssi_pid > 0) { |
1217 | char *p = NULL; | |
1218 | ||
87d2c1ff | 1219 | get_process_comm(sfsi.ssi_pid, &p); |
dfa7f7e1 | 1220 | |
67370238 | 1221 | log_debug("Received SIG%s from PID %lu (%s).", |
4e240ab0 | 1222 | signal_to_string(sfsi.ssi_signo), |
67370238 LP |
1223 | (unsigned long) sfsi.ssi_pid, strna(p)); |
1224 | free(p); | |
1225 | } else | |
4e240ab0 | 1226 | log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo)); |
1e001f52 | 1227 | |
b9cd2ec1 LP |
1228 | switch (sfsi.ssi_signo) { |
1229 | ||
4112df16 | 1230 | case SIGCHLD: |
9152c765 | 1231 | sigchld = true; |
b9cd2ec1 LP |
1232 | break; |
1233 | ||
6632c602 | 1234 | case SIGTERM: |
67445f4e | 1235 | if (m->running_as == SYSTEMD_SYSTEM) { |
db06e3b6 LP |
1236 | /* This is for compatibility with the |
1237 | * original sysvinit */ | |
e11dc4a2 | 1238 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1239 | break; |
1240 | } | |
84e9af1e | 1241 | |
a1b256b0 | 1242 | /* Fall through */ |
e11dc4a2 LP |
1243 | |
1244 | case SIGINT: | |
67445f4e | 1245 | if (m->running_as == SYSTEMD_SYSTEM) { |
7d793605 | 1246 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); |
84e9af1e LP |
1247 | break; |
1248 | } | |
1249 | ||
a1b256b0 | 1250 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 1251 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
1252 | m->exit_code = MANAGER_EXIT; |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | break; | |
84e9af1e | 1257 | |
28247076 | 1258 | case SIGWINCH: |
67445f4e | 1259 | if (m->running_as == SYSTEMD_SYSTEM) |
7d793605 | 1260 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 1261 | |
28247076 LP |
1262 | /* This is a nop on non-init */ |
1263 | break; | |
84e9af1e | 1264 | |
28247076 | 1265 | case SIGPWR: |
67445f4e | 1266 | if (m->running_as == SYSTEMD_SYSTEM) |
7d793605 | 1267 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 1268 | |
28247076 | 1269 | /* This is a nop on non-init */ |
84e9af1e | 1270 | break; |
6632c602 | 1271 | |
1005d14f | 1272 | case SIGUSR1: { |
57ee42ce LP |
1273 | Unit *u; |
1274 | ||
1275 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1276 | ||
1277 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
1278 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 1279 | bus_init(m, true); |
57ee42ce LP |
1280 | } |
1281 | ||
1282 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
1283 | log_info("Loading D-Bus service..."); | |
7d793605 | 1284 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
1285 | } |
1286 | ||
1287 | break; | |
1288 | } | |
1289 | ||
2149e37c LP |
1290 | case SIGUSR2: { |
1291 | FILE *f; | |
1292 | char *dump = NULL; | |
1293 | size_t size; | |
1294 | ||
1295 | if (!(f = open_memstream(&dump, &size))) { | |
1296 | log_warning("Failed to allocate memory stream."); | |
1297 | break; | |
1298 | } | |
1299 | ||
1300 | manager_dump_units(m, f, "\t"); | |
1301 | manager_dump_jobs(m, f, "\t"); | |
1302 | ||
1303 | if (ferror(f)) { | |
1304 | fclose(f); | |
1305 | free(dump); | |
1306 | log_warning("Failed to write status stream"); | |
1307 | break; | |
1308 | } | |
1309 | ||
1310 | fclose(f); | |
1311 | log_dump(LOG_INFO, dump); | |
1312 | free(dump); | |
1313 | ||
1005d14f | 1314 | break; |
2149e37c | 1315 | } |
1005d14f | 1316 | |
a16e1123 LP |
1317 | case SIGHUP: |
1318 | m->exit_code = MANAGER_RELOAD; | |
1319 | break; | |
1320 | ||
7d793605 | 1321 | default: { |
253ee27a | 1322 | |
0003d1ab LP |
1323 | /* Starting SIGRTMIN+0 */ |
1324 | static const char * const target_table[] = { | |
7d793605 LP |
1325 | [0] = SPECIAL_DEFAULT_TARGET, |
1326 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 1327 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
1328 | [3] = SPECIAL_HALT_TARGET, |
1329 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
1330 | [5] = SPECIAL_REBOOT_TARGET, |
1331 | [6] = SPECIAL_KEXEC_TARGET | |
1332 | }; | |
1333 | ||
1334 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
1335 | static const ManagerExitCode code_table[] = { | |
1336 | [0] = MANAGER_HALT, | |
1337 | [1] = MANAGER_POWEROFF, | |
1338 | [2] = MANAGER_REBOOT, | |
1339 | [3] = MANAGER_KEXEC | |
7d793605 LP |
1340 | }; |
1341 | ||
1342 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 1343 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
1344 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
1345 | manager_start_target(m, target_table[idx], | |
1346 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
1347 | break; |
1348 | } | |
1349 | ||
0003d1ab LP |
1350 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
1351 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
1352 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
1353 | break; | |
1354 | } | |
1355 | ||
0658666b LP |
1356 | switch (sfsi.ssi_signo - SIGRTMIN) { |
1357 | ||
1358 | case 20: | |
1359 | log_debug("Enabling showing of status."); | |
27d340c7 | 1360 | manager_set_show_status(m, true); |
0658666b LP |
1361 | break; |
1362 | ||
1363 | case 21: | |
1364 | log_debug("Disabling showing of status."); | |
27d340c7 | 1365 | manager_set_show_status(m, false); |
0658666b LP |
1366 | break; |
1367 | ||
253ee27a LP |
1368 | case 22: |
1369 | log_set_max_level(LOG_DEBUG); | |
1370 | log_notice("Setting log level to debug."); | |
1371 | break; | |
1372 | ||
1373 | case 23: | |
1374 | log_set_max_level(LOG_INFO); | |
1375 | log_notice("Setting log level to info."); | |
1376 | break; | |
1377 | ||
600b704e LP |
1378 | case 24: |
1379 | if (m->running_as == SYSTEMD_USER) { | |
1380 | m->exit_code = MANAGER_EXIT; | |
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | /* This is a nop on init */ | |
1385 | break; | |
1386 | ||
4cfa2c99 LP |
1387 | case 26: |
1388 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
1389 | log_notice("Setting log target to journal-or-kmsg."); | |
1390 | break; | |
1391 | ||
253ee27a LP |
1392 | case 27: |
1393 | log_set_target(LOG_TARGET_CONSOLE); | |
1394 | log_notice("Setting log target to console."); | |
1395 | break; | |
1396 | ||
1397 | case 28: | |
1398 | log_set_target(LOG_TARGET_KMSG); | |
1399 | log_notice("Setting log target to kmsg."); | |
1400 | break; | |
1401 | ||
1402 | case 29: | |
1403 | log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); | |
1404 | log_notice("Setting log target to syslog-or-kmsg."); | |
1405 | break; | |
1406 | ||
0658666b | 1407 | default: |
4e240ab0 | 1408 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 1409 | } |
b9cd2ec1 | 1410 | } |
7d793605 | 1411 | } |
9152c765 LP |
1412 | } |
1413 | ||
1414 | if (sigchld) | |
034c6ed7 LP |
1415 | return manager_dispatch_sigchld(m); |
1416 | ||
1417 | return 0; | |
1418 | } | |
1419 | ||
a16e1123 | 1420 | static int process_event(Manager *m, struct epoll_event *ev) { |
034c6ed7 | 1421 | int r; |
acbb0225 | 1422 | Watch *w; |
034c6ed7 LP |
1423 | |
1424 | assert(m); | |
1425 | assert(ev); | |
1426 | ||
3df5bf61 | 1427 | assert_se(w = ev->data.ptr); |
034c6ed7 | 1428 | |
40dde66f LP |
1429 | if (w->type == WATCH_INVALID) |
1430 | return 0; | |
1431 | ||
acbb0225 | 1432 | switch (w->type) { |
034c6ed7 | 1433 | |
ef734fd6 | 1434 | case WATCH_SIGNAL: |
034c6ed7 | 1435 | |
acbb0225 | 1436 | /* An incoming signal? */ |
f94ea366 | 1437 | if (ev->events != EPOLLIN) |
acbb0225 | 1438 | return -EINVAL; |
034c6ed7 | 1439 | |
a16e1123 | 1440 | if ((r = manager_process_signal_fd(m)) < 0) |
acbb0225 | 1441 | return r; |
034c6ed7 | 1442 | |
acbb0225 | 1443 | break; |
034c6ed7 | 1444 | |
8c47c732 LP |
1445 | case WATCH_NOTIFY: |
1446 | ||
1447 | /* An incoming daemon notification event? */ | |
1448 | if (ev->events != EPOLLIN) | |
1449 | return -EINVAL; | |
1450 | ||
1451 | if ((r = manager_process_notify_fd(m)) < 0) | |
1452 | return r; | |
1453 | ||
1454 | break; | |
1455 | ||
acbb0225 | 1456 | case WATCH_FD: |
034c6ed7 | 1457 | |
acbb0225 | 1458 | /* Some fd event, to be dispatched to the units */ |
ea430986 | 1459 | UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); |
acbb0225 | 1460 | break; |
034c6ed7 | 1461 | |
faf919f1 LP |
1462 | case WATCH_UNIT_TIMER: |
1463 | case WATCH_JOB_TIMER: { | |
acbb0225 LP |
1464 | uint64_t v; |
1465 | ssize_t k; | |
034c6ed7 | 1466 | |
acbb0225 | 1467 | /* Some timer event, to be dispatched to the units */ |
68b29a9f LP |
1468 | k = read(w->fd, &v, sizeof(v)); |
1469 | if (k != sizeof(v)) { | |
034c6ed7 | 1470 | |
acbb0225 LP |
1471 | if (k < 0 && (errno == EINTR || errno == EAGAIN)) |
1472 | break; | |
034c6ed7 | 1473 | |
8742514c | 1474 | log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read"); |
acbb0225 | 1475 | return k < 0 ? -errno : -EIO; |
034c6ed7 LP |
1476 | } |
1477 | ||
faf919f1 LP |
1478 | if (w->type == WATCH_UNIT_TIMER) |
1479 | UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); | |
1480 | else | |
1481 | job_timer_event(w->data.job, v, w); | |
acbb0225 LP |
1482 | break; |
1483 | } | |
1484 | ||
ef734fd6 LP |
1485 | case WATCH_MOUNT: |
1486 | /* Some mount table change, intended for the mount subsystem */ | |
1487 | mount_fd_event(m, ev->events); | |
1488 | break; | |
1489 | ||
4e434314 LP |
1490 | case WATCH_SWAP: |
1491 | /* Some swap table change, intended for the swap subsystem */ | |
1492 | swap_fd_event(m, ev->events); | |
1493 | break; | |
1494 | ||
f94ea366 LP |
1495 | case WATCH_UDEV: |
1496 | /* Some notification from udev, intended for the device subsystem */ | |
1497 | device_fd_event(m, ev->events); | |
1498 | break; | |
1499 | ||
ea430986 LP |
1500 | case WATCH_DBUS_WATCH: |
1501 | bus_watch_event(m, w, ev->events); | |
1502 | break; | |
1503 | ||
1504 | case WATCH_DBUS_TIMEOUT: | |
1505 | bus_timeout_event(m, w, ev->events); | |
1506 | break; | |
1507 | ||
8742514c LP |
1508 | case WATCH_TIME_CHANGE: { |
1509 | Unit *u; | |
1510 | Iterator i; | |
1511 | ||
1512 | log_struct(LOG_INFO, | |
1513 | MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), | |
1514 | "MESSAGE=Time has been changed", | |
1515 | NULL); | |
1516 | ||
1517 | /* Restart the watch */ | |
1518 | close_nointr_nofail(m->time_change_watch.fd); | |
1519 | watch_init(&m->time_change_watch); | |
1520 | manager_setup_time_change(m); | |
1521 | ||
1522 | HASHMAP_FOREACH(u, m->units, i) { | |
1523 | if (UNIT_VTABLE(u)->time_change) | |
1524 | UNIT_VTABLE(u)->time_change(u); | |
1525 | } | |
1526 | ||
1527 | break; | |
1528 | } | |
1529 | ||
acbb0225 | 1530 | default: |
c5fd1e57 | 1531 | log_error("event type=%i", w->type); |
acbb0225 | 1532 | assert_not_reached("Unknown epoll event type."); |
034c6ed7 | 1533 | } |
9152c765 LP |
1534 | |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | int manager_loop(Manager *m) { | |
1539 | int r; | |
9152c765 | 1540 | |
fac9f8df | 1541 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 1542 | |
9152c765 | 1543 | assert(m); |
a16e1123 | 1544 | m->exit_code = MANAGER_RUNNING; |
9152c765 | 1545 | |
fe51822e LP |
1546 | /* Release the path cache */ |
1547 | set_free_free(m->unit_path_cache); | |
1548 | m->unit_path_cache = NULL; | |
1549 | ||
b0c918b9 LP |
1550 | manager_check_finished(m); |
1551 | ||
a4312405 LP |
1552 | /* There might still be some zombies hanging around from |
1553 | * before we were exec()'ed. Leat's reap them */ | |
e96d6be7 LP |
1554 | r = manager_dispatch_sigchld(m); |
1555 | if (r < 0) | |
a4312405 LP |
1556 | return r; |
1557 | ||
a16e1123 | 1558 | while (m->exit_code == MANAGER_RUNNING) { |
957ca890 LP |
1559 | struct epoll_event event; |
1560 | int n; | |
c757a65b | 1561 | int wait_msec = -1; |
9152c765 | 1562 | |
67445f4e | 1563 | if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) |
e96d6be7 LP |
1564 | watchdog_ping(); |
1565 | ||
ea430986 LP |
1566 | if (!ratelimit_test(&rl)) { |
1567 | /* Yay, something is going seriously wrong, pause a little */ | |
1568 | log_warning("Looping too fast. Throttling execution a little."); | |
1569 | sleep(1); | |
e96d6be7 | 1570 | continue; |
ea430986 LP |
1571 | } |
1572 | ||
37a8e683 | 1573 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
1574 | continue; |
1575 | ||
37a8e683 | 1576 | if (manager_dispatch_run_queue(m) > 0) |
701cc384 LP |
1577 | continue; |
1578 | ||
37a8e683 | 1579 | if (bus_dispatch(m) > 0) |
c1e1601e | 1580 | continue; |
034c6ed7 | 1581 | |
37a8e683 | 1582 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e LP |
1583 | continue; |
1584 | ||
37a8e683 | 1585 | if (manager_dispatch_gc_queue(m) > 0) |
c1e1601e LP |
1586 | continue; |
1587 | ||
1588 | if (manager_dispatch_dbus_queue(m) > 0) | |
ea430986 | 1589 | continue; |
ea430986 | 1590 | |
e04aad61 LP |
1591 | if (swap_dispatch_reload(m) > 0) |
1592 | continue; | |
1593 | ||
c757a65b | 1594 | /* Sleep for half the watchdog time */ |
67445f4e | 1595 | if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) { |
c757a65b LP |
1596 | wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC); |
1597 | if (wait_msec <= 0) | |
1598 | wait_msec = 1; | |
1599 | } else | |
1600 | wait_msec = -1; | |
1601 | ||
e96d6be7 LP |
1602 | n = epoll_wait(m->epoll_fd, &event, 1, wait_msec); |
1603 | if (n < 0) { | |
9152c765 | 1604 | |
6089f4a9 | 1605 | if (errno == EINTR) |
9152c765 LP |
1606 | continue; |
1607 | ||
1608 | return -errno; | |
e96d6be7 LP |
1609 | } else if (n == 0) |
1610 | continue; | |
9152c765 | 1611 | |
957ca890 | 1612 | assert(n == 1); |
b9cd2ec1 | 1613 | |
e96d6be7 LP |
1614 | r = process_event(m, &event); |
1615 | if (r < 0) | |
957ca890 | 1616 | return r; |
a16e1123 | 1617 | } |
957ca890 | 1618 | |
a16e1123 | 1619 | return m->exit_code; |
83c60c9f | 1620 | } |
ea430986 | 1621 | |
80fbf05e | 1622 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) { |
ea430986 LP |
1623 | char *n; |
1624 | Unit *u; | |
80fbf05e | 1625 | int r; |
ea430986 LP |
1626 | |
1627 | assert(m); | |
1628 | assert(s); | |
1629 | assert(_u); | |
1630 | ||
1631 | if (!startswith(s, "/org/freedesktop/systemd1/unit/")) | |
1632 | return -EINVAL; | |
1633 | ||
80fbf05e MS |
1634 | n = bus_path_unescape(s+31); |
1635 | if (!n) | |
ea430986 LP |
1636 | return -ENOMEM; |
1637 | ||
80fbf05e | 1638 | r = manager_load_unit(m, n, NULL, e, &u); |
ea430986 LP |
1639 | free(n); |
1640 | ||
80fbf05e MS |
1641 | if (r < 0) |
1642 | return r; | |
ea430986 LP |
1643 | |
1644 | *_u = u; | |
1645 | ||
1646 | return 0; | |
1647 | } | |
86fbf370 LP |
1648 | |
1649 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
1650 | Job *j; | |
1651 | unsigned id; | |
1652 | int r; | |
1653 | ||
1654 | assert(m); | |
1655 | assert(s); | |
1656 | assert(_j); | |
1657 | ||
1658 | if (!startswith(s, "/org/freedesktop/systemd1/job/")) | |
1659 | return -EINVAL; | |
1660 | ||
8742514c LP |
1661 | r = safe_atou(s + 30, &id); |
1662 | if (r < 0) | |
86fbf370 LP |
1663 | return r; |
1664 | ||
8742514c LP |
1665 | j = manager_get_job(m, id); |
1666 | if (!j) | |
86fbf370 LP |
1667 | return -ENOENT; |
1668 | ||
1669 | *_j = j; | |
1670 | ||
1671 | return 0; | |
1672 | } | |
dfcd764e | 1673 | |
4927fcae | 1674 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 1675 | |
4927fcae LP |
1676 | #ifdef HAVE_AUDIT |
1677 | char *p; | |
c1165f82 | 1678 | int audit_fd; |
e537352b | 1679 | |
c1165f82 LP |
1680 | audit_fd = get_audit_fd(); |
1681 | if (audit_fd < 0) | |
e537352b LP |
1682 | return; |
1683 | ||
bbd3a7ba LP |
1684 | /* Don't generate audit events if the service was already |
1685 | * started and we're just deserializing */ | |
a7556052 | 1686 | if (m->n_reloading > 0) |
bbd3a7ba LP |
1687 | return; |
1688 | ||
67445f4e | 1689 | if (m->running_as != SYSTEMD_SYSTEM) |
f1dd0c3f LP |
1690 | return; |
1691 | ||
ac155bb8 | 1692 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
1693 | return; |
1694 | ||
bd0af849 ZJS |
1695 | p = unit_name_to_prefix_and_instance(u->id); |
1696 | if (!p) { | |
66870f90 ZJS |
1697 | log_error_unit(u->id, |
1698 | "Failed to allocate unit name for audit message: %s", strerror(ENOMEM)); | |
e537352b LP |
1699 | return; |
1700 | } | |
1701 | ||
c1165f82 | 1702 | if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) { |
391ade86 LP |
1703 | if (errno == EPERM) { |
1704 | /* We aren't allowed to send audit messages? | |
44785992 | 1705 | * Then let's not retry again. */ |
c1165f82 | 1706 | close_audit_fd(); |
44785992 LP |
1707 | } else |
1708 | log_warning("Failed to send audit message: %m"); | |
391ade86 | 1709 | } |
e537352b | 1710 | |
4927fcae LP |
1711 | free(p); |
1712 | #endif | |
e537352b | 1713 | |
e537352b LP |
1714 | } |
1715 | ||
e983b760 LP |
1716 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
1717 | int fd = -1; | |
1718 | union sockaddr_union sa; | |
1719 | int n = 0; | |
1720 | char *message = NULL; | |
e983b760 LP |
1721 | |
1722 | /* Don't generate plymouth events if the service was already | |
1723 | * started and we're just deserializing */ | |
a7556052 | 1724 | if (m->n_reloading > 0) |
e983b760 LP |
1725 | return; |
1726 | ||
67445f4e | 1727 | if (m->running_as != SYSTEMD_SYSTEM) |
e983b760 LP |
1728 | return; |
1729 | ||
ac155bb8 MS |
1730 | if (u->type != UNIT_SERVICE && |
1731 | u->type != UNIT_MOUNT && | |
1732 | u->type != UNIT_SWAP) | |
e983b760 LP |
1733 | return; |
1734 | ||
1735 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
1736 | * message then wait for plymouth */ | |
1737 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
1738 | log_error("socket() failed: %m"); | |
1739 | return; | |
1740 | } | |
1741 | ||
1742 | zero(sa); | |
1743 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
1744 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
1745 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
e983b760 LP |
1746 | |
1747 | if (errno != EPIPE && | |
1748 | errno != EAGAIN && | |
1749 | errno != ENOENT && | |
1750 | errno != ECONNREFUSED && | |
1751 | errno != ECONNRESET && | |
1752 | errno != ECONNABORTED) | |
1753 | log_error("connect() failed: %m"); | |
1754 | ||
1755 | goto finish; | |
1756 | } | |
1757 | ||
ac155bb8 | 1758 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
0d0f0c50 | 1759 | log_oom(); |
e983b760 LP |
1760 | goto finish; |
1761 | } | |
1762 | ||
1763 | errno = 0; | |
bd40a2d8 | 1764 | if (write(fd, message, n + 1) != n + 1) { |
e983b760 LP |
1765 | |
1766 | if (errno != EPIPE && | |
1767 | errno != EAGAIN && | |
1768 | errno != ENOENT && | |
1769 | errno != ECONNREFUSED && | |
1770 | errno != ECONNRESET && | |
1771 | errno != ECONNABORTED) | |
1772 | log_error("Failed to write Plymouth message: %m"); | |
1773 | ||
1774 | goto finish; | |
1775 | } | |
1776 | ||
1777 | finish: | |
1778 | if (fd >= 0) | |
1779 | close_nointr_nofail(fd); | |
1780 | ||
1781 | free(message); | |
1782 | } | |
1783 | ||
05e343b7 LP |
1784 | void manager_dispatch_bus_name_owner_changed( |
1785 | Manager *m, | |
1786 | const char *name, | |
1787 | const char* old_owner, | |
1788 | const char *new_owner) { | |
1789 | ||
1790 | Unit *u; | |
1791 | ||
1792 | assert(m); | |
1793 | assert(name); | |
1794 | ||
1795 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1796 | return; | |
1797 | ||
1798 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
1799 | } | |
1800 | ||
1801 | void manager_dispatch_bus_query_pid_done( | |
1802 | Manager *m, | |
1803 | const char *name, | |
1804 | pid_t pid) { | |
1805 | ||
1806 | Unit *u; | |
1807 | ||
1808 | assert(m); | |
1809 | assert(name); | |
1810 | assert(pid >= 1); | |
1811 | ||
1812 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1813 | return; | |
1814 | ||
1815 | UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); | |
1816 | } | |
1817 | ||
d8d5ab98 | 1818 | int manager_open_serialization(Manager *m, FILE **_f) { |
b925e726 | 1819 | char *path = NULL; |
a16e1123 LP |
1820 | mode_t saved_umask; |
1821 | int fd; | |
1822 | FILE *f; | |
1823 | ||
1824 | assert(_f); | |
1825 | ||
67445f4e | 1826 | if (m->running_as == SYSTEMD_SYSTEM) |
2b583ce6 | 1827 | asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); |
b925e726 LP |
1828 | else |
1829 | asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); | |
d8d5ab98 | 1830 | |
b925e726 LP |
1831 | if (!path) |
1832 | return -ENOMEM; | |
a16e1123 LP |
1833 | |
1834 | saved_umask = umask(0077); | |
1835 | fd = mkostemp(path, O_RDWR|O_CLOEXEC); | |
1836 | umask(saved_umask); | |
1837 | ||
1838 | if (fd < 0) { | |
1839 | free(path); | |
1840 | return -errno; | |
1841 | } | |
1842 | ||
1843 | unlink(path); | |
1844 | ||
1845 | log_debug("Serializing state to %s", path); | |
1846 | free(path); | |
1847 | ||
01e10de3 LP |
1848 | f = fdopen(fd, "w+"); |
1849 | if (!f) | |
a16e1123 LP |
1850 | return -errno; |
1851 | ||
1852 | *_f = f; | |
1853 | ||
1854 | return 0; | |
1855 | } | |
1856 | ||
6b78f9b4 | 1857 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) { |
a16e1123 LP |
1858 | Iterator i; |
1859 | Unit *u; | |
1860 | const char *t; | |
4a9fd066 | 1861 | char **e; |
a16e1123 LP |
1862 | int r; |
1863 | ||
1864 | assert(m); | |
1865 | assert(f); | |
1866 | assert(fds); | |
1867 | ||
a7556052 | 1868 | m->n_reloading ++; |
38c52d46 | 1869 | |
01d67b43 LP |
1870 | fprintf(f, "current-job-id=%i\n", m->current_job_id); |
1871 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
33c5fae9 LP |
1872 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
1873 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 1874 | |
915b3753 LP |
1875 | dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp); |
1876 | dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp); | |
1877 | dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp); | |
e9ddabc2 | 1878 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 1879 | |
26a1efdf | 1880 | if (!in_initrd()) { |
915b3753 | 1881 | dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp); |
f38ed060 HH |
1882 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); |
1883 | } | |
47a483a1 | 1884 | |
4a9fd066 OS |
1885 | STRV_FOREACH(e, m->environment) { |
1886 | _cleanup_free_ char *ce; | |
1887 | ||
1888 | ce = cescape(*e); | |
1889 | if (ce) | |
1890 | fprintf(f, "env=%s\n", *e); | |
1891 | } | |
1892 | ||
f2382a94 LP |
1893 | fputc('\n', f); |
1894 | ||
a16e1123 | 1895 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 1896 | if (u->id != t) |
a16e1123 LP |
1897 | continue; |
1898 | ||
1899 | if (!unit_can_serialize(u)) | |
1900 | continue; | |
1901 | ||
1902 | /* Start marker */ | |
ac155bb8 | 1903 | fputs(u->id, f); |
a16e1123 LP |
1904 | fputc('\n', f); |
1905 | ||
6b78f9b4 | 1906 | if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) { |
a7556052 | 1907 | m->n_reloading --; |
a16e1123 | 1908 | return r; |
38c52d46 | 1909 | } |
a16e1123 LP |
1910 | } |
1911 | ||
a7556052 LP |
1912 | assert(m->n_reloading > 0); |
1913 | m->n_reloading --; | |
38c52d46 | 1914 | |
a16e1123 LP |
1915 | if (ferror(f)) |
1916 | return -EIO; | |
1917 | ||
b23de6af LP |
1918 | r = bus_fdset_add_all(m, fds); |
1919 | if (r < 0) | |
1920 | return r; | |
1921 | ||
a16e1123 LP |
1922 | return 0; |
1923 | } | |
1924 | ||
1925 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
1926 | int r = 0; | |
1927 | ||
1928 | assert(m); | |
1929 | assert(f); | |
1930 | ||
1931 | log_debug("Deserializing state..."); | |
1932 | ||
a7556052 | 1933 | m->n_reloading ++; |
82c64bf5 | 1934 | |
10f8e83c | 1935 | for (;;) { |
20c03b7b | 1936 | char line[LINE_MAX], *l; |
10f8e83c LP |
1937 | |
1938 | if (!fgets(line, sizeof(line), f)) { | |
1939 | if (feof(f)) | |
1940 | r = 0; | |
1941 | else | |
1942 | r = -errno; | |
1943 | ||
1944 | goto finish; | |
1945 | } | |
1946 | ||
1947 | char_array_0(line); | |
1948 | l = strstrip(line); | |
1949 | ||
1950 | if (l[0] == 0) | |
1951 | break; | |
1952 | ||
01d67b43 LP |
1953 | if (startswith(l, "current-job-id=")) { |
1954 | uint32_t id; | |
1955 | ||
1956 | if (safe_atou32(l+15, &id) < 0) | |
1957 | log_debug("Failed to parse current job id value %s", l+15); | |
1958 | else | |
1959 | m->current_job_id = MAX(m->current_job_id, id); | |
33c5fae9 LP |
1960 | } else if (startswith(l, "n-installed-jobs=")) { |
1961 | uint32_t n; | |
1962 | ||
1963 | if (safe_atou32(l+17, &n) < 0) | |
1964 | log_debug("Failed to parse installed jobs counter %s", l+17); | |
1965 | else | |
1966 | m->n_installed_jobs += n; | |
1967 | } else if (startswith(l, "n-failed-jobs=")) { | |
1968 | uint32_t n; | |
1969 | ||
1970 | if (safe_atou32(l+14, &n) < 0) | |
1971 | log_debug("Failed to parse failed jobs counter %s", l+14); | |
1972 | else | |
1973 | m->n_failed_jobs += n; | |
01d67b43 LP |
1974 | } else if (startswith(l, "taint-usr=")) { |
1975 | int b; | |
1976 | ||
1977 | if ((b = parse_boolean(l+10)) < 0) | |
1978 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
1979 | else | |
1980 | m->taint_usr = m->taint_usr || b; | |
915b3753 LP |
1981 | } else if (startswith(l, "firmware-timestamp=")) |
1982 | dual_timestamp_deserialize(l+19, &m->firmware_timestamp); | |
1983 | else if (startswith(l, "loader-timestamp=")) | |
1984 | dual_timestamp_deserialize(l+17, &m->loader_timestamp); | |
1985 | else if (startswith(l, "kernel-timestamp=")) | |
1986 | dual_timestamp_deserialize(l+17, &m->kernel_timestamp); | |
1987 | else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 | 1988 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
915b3753 LP |
1989 | else if (startswith(l, "userspace-timestamp=")) |
1990 | dual_timestamp_deserialize(l+20, &m->userspace_timestamp); | |
10717a1a | 1991 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 1992 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
4a9fd066 OS |
1993 | else if (startswith(l, "env=")) { |
1994 | _cleanup_free_ char *uce = NULL; | |
1995 | char **e; | |
1996 | ||
1997 | uce = cunescape(l+4); | |
1998 | if (!uce) { | |
1999 | r = -ENOMEM; | |
2000 | goto finish; | |
2001 | } | |
2002 | ||
2003 | e = strv_env_set(m->environment, uce); | |
2004 | if (!e) { | |
2005 | r = -ENOMEM; | |
2006 | goto finish; | |
2007 | } | |
2008 | ||
2009 | strv_free(m->environment); | |
2010 | m->environment = e; | |
2011 | } else | |
10f8e83c LP |
2012 | log_debug("Unknown serialization item '%s'", l); |
2013 | } | |
2014 | ||
a16e1123 LP |
2015 | for (;;) { |
2016 | Unit *u; | |
2017 | char name[UNIT_NAME_MAX+2]; | |
2018 | ||
2019 | /* Start marker */ | |
2020 | if (!fgets(name, sizeof(name), f)) { | |
2021 | if (feof(f)) | |
10f8e83c LP |
2022 | r = 0; |
2023 | else | |
2024 | r = -errno; | |
a16e1123 | 2025 | |
82c64bf5 | 2026 | goto finish; |
a16e1123 LP |
2027 | } |
2028 | ||
2029 | char_array_0(name); | |
2030 | ||
bd0af849 ZJS |
2031 | r = manager_load_unit(m, strstrip(name), NULL, NULL, &u); |
2032 | if (r < 0) | |
82c64bf5 | 2033 | goto finish; |
a16e1123 | 2034 | |
01e10de3 LP |
2035 | r = unit_deserialize(u, f, fds); |
2036 | if (r < 0) | |
82c64bf5 | 2037 | goto finish; |
a16e1123 LP |
2038 | } |
2039 | ||
10f8e83c | 2040 | finish: |
82c64bf5 LP |
2041 | if (ferror(f)) { |
2042 | r = -EIO; | |
2043 | goto finish; | |
2044 | } | |
a16e1123 | 2045 | |
a7556052 LP |
2046 | assert(m->n_reloading > 0); |
2047 | m->n_reloading --; | |
82c64bf5 LP |
2048 | |
2049 | return r; | |
a16e1123 LP |
2050 | } |
2051 | ||
01e10de3 LP |
2052 | int manager_distribute_fds(Manager *m, FDSet *fds) { |
2053 | Unit *u; | |
2054 | Iterator i; | |
2055 | int r; | |
2056 | ||
2057 | assert(m); | |
2058 | ||
2059 | HASHMAP_FOREACH(u, m->units, i) { | |
2060 | ||
2061 | if (fdset_size(fds) <= 0) | |
2062 | break; | |
2063 | ||
2064 | if (UNIT_VTABLE(u)->distribute_fds) { | |
2065 | r = UNIT_VTABLE(u)->distribute_fds(u, fds); | |
2066 | if (r < 0) | |
2067 | return r; | |
2068 | } | |
2069 | } | |
2070 | ||
2071 | return 0; | |
2072 | } | |
2073 | ||
a16e1123 LP |
2074 | int manager_reload(Manager *m) { |
2075 | int r, q; | |
2076 | FILE *f; | |
2077 | FDSet *fds; | |
2078 | ||
2079 | assert(m); | |
2080 | ||
07719a21 LP |
2081 | r = manager_open_serialization(m, &f); |
2082 | if (r < 0) | |
a16e1123 LP |
2083 | return r; |
2084 | ||
a7556052 | 2085 | m->n_reloading ++; |
38c52d46 | 2086 | |
07719a21 LP |
2087 | fds = fdset_new(); |
2088 | if (!fds) { | |
a7556052 | 2089 | m->n_reloading --; |
a16e1123 LP |
2090 | r = -ENOMEM; |
2091 | goto finish; | |
2092 | } | |
2093 | ||
6b78f9b4 | 2094 | r = manager_serialize(m, f, fds, true); |
07719a21 | 2095 | if (r < 0) { |
a7556052 | 2096 | m->n_reloading --; |
a16e1123 | 2097 | goto finish; |
38c52d46 | 2098 | } |
a16e1123 LP |
2099 | |
2100 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
a7556052 | 2101 | m->n_reloading --; |
a16e1123 LP |
2102 | r = -errno; |
2103 | goto finish; | |
2104 | } | |
2105 | ||
2106 | /* From here on there is no way back. */ | |
2107 | manager_clear_jobs_and_units(m); | |
5a1e9937 | 2108 | manager_undo_generators(m); |
84e3543e | 2109 | lookup_paths_free(&m->lookup_paths); |
2ded0c04 | 2110 | |
07719a21 | 2111 | /* Find new unit paths */ |
5a1e9937 LP |
2112 | manager_run_generators(m); |
2113 | ||
07719a21 LP |
2114 | q = lookup_paths_init( |
2115 | &m->lookup_paths, m->running_as, true, | |
2116 | m->generator_unit_path, | |
2117 | m->generator_unit_path_early, | |
2118 | m->generator_unit_path_late); | |
2119 | if (q < 0) | |
2120 | r = q; | |
2121 | ||
5a1e9937 LP |
2122 | manager_build_unit_path_cache(m); |
2123 | ||
a16e1123 | 2124 | /* First, enumerate what we can from all config files */ |
07719a21 LP |
2125 | q = manager_enumerate(m); |
2126 | if (q < 0) | |
a16e1123 LP |
2127 | r = q; |
2128 | ||
2129 | /* Second, deserialize our stored data */ | |
07719a21 LP |
2130 | q = manager_deserialize(m, f, fds); |
2131 | if (q < 0) | |
a16e1123 LP |
2132 | r = q; |
2133 | ||
2134 | fclose(f); | |
2135 | f = NULL; | |
2136 | ||
2137 | /* Third, fire things up! */ | |
07719a21 LP |
2138 | q = manager_coldplug(m); |
2139 | if (q < 0) | |
a16e1123 LP |
2140 | r = q; |
2141 | ||
a7556052 LP |
2142 | assert(m->n_reloading > 0); |
2143 | m->n_reloading--; | |
9f611ad8 | 2144 | |
a16e1123 LP |
2145 | finish: |
2146 | if (f) | |
2147 | fclose(f); | |
2148 | ||
2149 | if (fds) | |
2150 | fdset_free(fds); | |
2151 | ||
2152 | return r; | |
2153 | } | |
2154 | ||
6084e22e | 2155 | static bool manager_is_booting_or_shutting_down(Manager *m) { |
9e58ff9c LP |
2156 | Unit *u; |
2157 | ||
2158 | assert(m); | |
2159 | ||
2160 | /* Is the initial job still around? */ | |
bacbccb7 | 2161 | if (manager_get_job(m, m->default_unit_job_id)) |
9e58ff9c LP |
2162 | return true; |
2163 | ||
2164 | /* Is there a job for the shutdown target? */ | |
27d340c7 LP |
2165 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
2166 | if (u) | |
ac155bb8 | 2167 | return !!u->job; |
9e58ff9c LP |
2168 | |
2169 | return false; | |
2170 | } | |
2171 | ||
fdf20a31 | 2172 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2173 | Unit *u; |
2174 | Iterator i; | |
2175 | ||
2176 | assert(m); | |
2177 | ||
2178 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2179 | unit_reset_failed(u); |
5632e374 LP |
2180 | } |
2181 | ||
8f6df3fa LP |
2182 | bool manager_unit_pending_inactive(Manager *m, const char *name) { |
2183 | Unit *u; | |
2184 | ||
2185 | assert(m); | |
2186 | assert(name); | |
2187 | ||
2188 | /* Returns true if the unit is inactive or going down */ | |
bd0af849 ZJS |
2189 | u = manager_get_unit(m, name); |
2190 | if (!u) | |
8f6df3fa LP |
2191 | return true; |
2192 | ||
18ffdfda | 2193 | return unit_pending_inactive(u); |
8f6df3fa LP |
2194 | } |
2195 | ||
b0c918b9 | 2196 | void manager_check_finished(Manager *m) { |
7ceba241 | 2197 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
915b3753 | 2198 | usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 LP |
2199 | |
2200 | assert(m); | |
2201 | ||
f2b68789 | 2202 | if (hashmap_size(m->jobs) > 0) |
b0c918b9 LP |
2203 | return; |
2204 | ||
f2b68789 LP |
2205 | /* Notify Type=idle units that we are done now */ |
2206 | close_pipe(m->idle_pipe); | |
2207 | ||
af6da548 LP |
2208 | /* Turn off confirm spawn now */ |
2209 | m->confirm_spawn = false; | |
2210 | ||
f2b68789 | 2211 | if (dual_timestamp_is_set(&m->finish_timestamp)) |
b0c918b9 LP |
2212 | return; |
2213 | ||
2214 | dual_timestamp_get(&m->finish_timestamp); | |
2215 | ||
67445f4e | 2216 | if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) { |
e03ae661 | 2217 | |
915b3753 LP |
2218 | /* Note that m->kernel_usec.monotonic is always at 0, |
2219 | * and m->firmware_usec.monotonic and | |
2220 | * m->loader_usec.monotonic should be considered | |
2221 | * negative values. */ | |
2222 | ||
7ceba241 LP |
2223 | firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic; |
2224 | loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic; | |
915b3753 | 2225 | userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; |
7ceba241 | 2226 | total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic; |
18fa6b27 | 2227 | |
e9ddabc2 | 2228 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 | 2229 | |
915b3753 LP |
2230 | kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic; |
2231 | initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
18fa6b27 | 2232 | |
81270860 LP |
2233 | if (!log_on_console()) |
2234 | log_struct(LOG_INFO, | |
1ca6783f | 2235 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2236 | "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, |
2237 | "INITRD_USEC=%llu", (unsigned long long) initrd_usec, | |
2238 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, | |
2239 | "MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", | |
2240 | format_timespan(kernel, sizeof(kernel), kernel_usec), | |
2241 | format_timespan(initrd, sizeof(initrd), initrd_usec), | |
2242 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2243 | format_timespan(sum, sizeof(sum), total_usec), | |
2244 | NULL); | |
18fa6b27 | 2245 | } else { |
915b3753 | 2246 | kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic; |
18fa6b27 LP |
2247 | initrd_usec = 0; |
2248 | ||
81270860 LP |
2249 | if (!log_on_console()) |
2250 | log_struct(LOG_INFO, | |
1ca6783f | 2251 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2252 | "KERNEL_USEC=%llu", (unsigned long long) kernel_usec, |
2253 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, | |
2254 | "MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.", | |
2255 | format_timespan(kernel, sizeof(kernel), kernel_usec), | |
2256 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2257 | format_timespan(sum, sizeof(sum), total_usec), | |
2258 | NULL); | |
18fa6b27 LP |
2259 | } |
2260 | } else { | |
915b3753 LP |
2261 | firmware_usec = loader_usec = initrd_usec = kernel_usec = 0; |
2262 | total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic; | |
877d54e9 | 2263 | |
81270860 LP |
2264 | if (!log_on_console()) |
2265 | log_struct(LOG_INFO, | |
1ca6783f | 2266 | MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED), |
81270860 LP |
2267 | "USERSPACE_USEC=%llu", (unsigned long long) userspace_usec, |
2268 | "MESSAGE=Startup finished in %s.", | |
2269 | format_timespan(sum, sizeof(sum), total_usec), | |
2270 | NULL); | |
18fa6b27 | 2271 | } |
b0c918b9 | 2272 | |
915b3753 | 2273 | bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2274 | |
2275 | sd_notifyf(false, | |
2276 | "READY=1\nSTATUS=Startup finished in %s.", | |
2277 | format_timespan(sum, sizeof(sum), total_usec)); | |
b0c918b9 LP |
2278 | } |
2279 | ||
07719a21 LP |
2280 | static int create_generator_dir(Manager *m, char **generator, const char *name) { |
2281 | char *p; | |
2282 | int r; | |
2283 | ||
2284 | assert(m); | |
2285 | assert(generator); | |
2286 | assert(name); | |
2287 | ||
2288 | if (*generator) | |
2289 | return 0; | |
2290 | ||
67445f4e | 2291 | if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) { |
07719a21 LP |
2292 | |
2293 | p = strappend("/run/systemd/", name); | |
0d0f0c50 SL |
2294 | if (!p) |
2295 | return log_oom(); | |
07719a21 | 2296 | |
d2e54fae | 2297 | r = mkdir_p_label(p, 0755); |
07719a21 | 2298 | if (r < 0) { |
7ad94c71 ZJS |
2299 | log_error("Failed to create generator directory %s: %s", |
2300 | p, strerror(-r)); | |
07719a21 LP |
2301 | free(p); |
2302 | return r; | |
2303 | } | |
2304 | } else { | |
b7def684 | 2305 | p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL); |
0d0f0c50 SL |
2306 | if (!p) |
2307 | return log_oom(); | |
07719a21 LP |
2308 | |
2309 | if (!mkdtemp(p)) { | |
2310 | free(p); | |
7ad94c71 ZJS |
2311 | log_error("Failed to create generator directory %s: %m", |
2312 | p); | |
07719a21 LP |
2313 | return -errno; |
2314 | } | |
2315 | } | |
2316 | ||
2317 | *generator = p; | |
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | static void trim_generator_dir(Manager *m, char **generator) { | |
2322 | assert(m); | |
2323 | assert(generator); | |
2324 | ||
2325 | if (!*generator) | |
2326 | return; | |
2327 | ||
2328 | if (rmdir(*generator) >= 0) { | |
2329 | free(*generator); | |
2330 | *generator = NULL; | |
2331 | } | |
2332 | ||
2333 | return; | |
2334 | } | |
2335 | ||
5a1e9937 LP |
2336 | void manager_run_generators(Manager *m) { |
2337 | DIR *d = NULL; | |
5a1e9937 | 2338 | const char *generator_path; |
07719a21 | 2339 | const char *argv[5]; |
07f8a4aa | 2340 | mode_t u; |
07719a21 | 2341 | int r; |
5a1e9937 LP |
2342 | |
2343 | assert(m); | |
2344 | ||
67445f4e | 2345 | generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH; |
07719a21 LP |
2346 | d = opendir(generator_path); |
2347 | if (!d) { | |
5a1e9937 LP |
2348 | if (errno == ENOENT) |
2349 | return; | |
2350 | ||
7ad94c71 ZJS |
2351 | log_error("Failed to enumerate generator directory %s: %m", |
2352 | generator_path); | |
5a1e9937 LP |
2353 | return; |
2354 | } | |
2355 | ||
07719a21 LP |
2356 | r = create_generator_dir(m, &m->generator_unit_path, "generator"); |
2357 | if (r < 0) | |
2358 | goto finish; | |
f1d19aa4 | 2359 | |
07719a21 LP |
2360 | r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early"); |
2361 | if (r < 0) | |
2362 | goto finish; | |
5a1e9937 | 2363 | |
07719a21 LP |
2364 | r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late"); |
2365 | if (r < 0) | |
2366 | goto finish; | |
5a1e9937 | 2367 | |
83cc030f LP |
2368 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
2369 | argv[1] = m->generator_unit_path; | |
07719a21 LP |
2370 | argv[2] = m->generator_unit_path_early; |
2371 | argv[3] = m->generator_unit_path_late; | |
2372 | argv[4] = NULL; | |
5a1e9937 | 2373 | |
07f8a4aa | 2374 | u = umask(0022); |
83cc030f | 2375 | execute_directory(generator_path, d, (char**) argv); |
07f8a4aa | 2376 | umask(u); |
5a1e9937 | 2377 | |
07719a21 LP |
2378 | trim_generator_dir(m, &m->generator_unit_path); |
2379 | trim_generator_dir(m, &m->generator_unit_path_early); | |
2380 | trim_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2381 | |
2382 | finish: | |
2383 | if (d) | |
2384 | closedir(d); | |
5a1e9937 LP |
2385 | } |
2386 | ||
07719a21 | 2387 | static void remove_generator_dir(Manager *m, char **generator) { |
5a1e9937 | 2388 | assert(m); |
07719a21 | 2389 | assert(generator); |
5a1e9937 | 2390 | |
07719a21 | 2391 | if (!*generator) |
5a1e9937 LP |
2392 | return; |
2393 | ||
07719a21 LP |
2394 | strv_remove(m->lookup_paths.unit_path, *generator); |
2395 | rm_rf(*generator, false, true, false); | |
5a1e9937 | 2396 | |
07719a21 LP |
2397 | free(*generator); |
2398 | *generator = NULL; | |
2399 | } | |
2400 | ||
2401 | void manager_undo_generators(Manager *m) { | |
2402 | assert(m); | |
2403 | ||
2404 | remove_generator_dir(m, &m->generator_unit_path); | |
2405 | remove_generator_dir(m, &m->generator_unit_path_early); | |
2406 | remove_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2407 | } |
2408 | ||
06d4c99a LP |
2409 | int manager_set_default_controllers(Manager *m, char **controllers) { |
2410 | char **l; | |
2411 | ||
2412 | assert(m); | |
2413 | ||
9156e799 LP |
2414 | l = strv_copy(controllers); |
2415 | if (!l) | |
06d4c99a LP |
2416 | return -ENOMEM; |
2417 | ||
2418 | strv_free(m->default_controllers); | |
2419 | m->default_controllers = l; | |
2420 | ||
b59e2465 | 2421 | cg_shorten_controllers(m->default_controllers); |
9156e799 | 2422 | |
06d4c99a LP |
2423 | return 0; |
2424 | } | |
2425 | ||
c93ff2e9 FC |
2426 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
2427 | int i; | |
2428 | ||
2429 | assert(m); | |
2430 | ||
2431 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
07719a21 LP |
2432 | if (!default_rlimit[i]) |
2433 | continue; | |
c93ff2e9 | 2434 | |
07719a21 LP |
2435 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
2436 | if (!m->rlimit[i]) | |
2437 | return -ENOMEM; | |
c93ff2e9 FC |
2438 | } |
2439 | ||
2440 | return 0; | |
2441 | } | |
2442 | ||
4cfa2c99 | 2443 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
2444 | Unit *u; |
2445 | ||
2446 | assert(m); | |
2447 | ||
67445f4e | 2448 | if (m->running_as != SYSTEMD_SYSTEM) |
f1dd0c3f LP |
2449 | return; |
2450 | ||
731a676c LP |
2451 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
2452 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 2453 | log_close_journal(); |
731a676c | 2454 | return; |
f1dd0c3f LP |
2455 | } |
2456 | ||
731a676c LP |
2457 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
2458 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 2459 | log_close_journal(); |
731a676c LP |
2460 | return; |
2461 | } | |
f1dd0c3f | 2462 | |
731a676c LP |
2463 | /* Hmm, OK, so the socket is fully up and the service is up |
2464 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
2465 | log_open(); |
2466 | } | |
2467 | ||
27d340c7 LP |
2468 | void manager_set_show_status(Manager *m, bool b) { |
2469 | assert(m); | |
2470 | ||
67445f4e | 2471 | if (m->running_as != SYSTEMD_SYSTEM) |
27d340c7 LP |
2472 | return; |
2473 | ||
2474 | m->show_status = b; | |
2475 | ||
2476 | if (b) | |
2477 | touch("/run/systemd/show-status"); | |
2478 | else | |
2479 | unlink("/run/systemd/show-status"); | |
2480 | } | |
2481 | ||
6084e22e | 2482 | static bool manager_get_show_status(Manager *m) { |
27d340c7 LP |
2483 | assert(m); |
2484 | ||
67445f4e | 2485 | if (m->running_as != SYSTEMD_SYSTEM) |
27d340c7 LP |
2486 | return false; |
2487 | ||
2488 | if (m->show_status) | |
2489 | return true; | |
2490 | ||
2491 | /* If Plymouth is running make sure we show the status, so | |
2492 | * that there's something nice to see when people press Esc */ | |
2493 | ||
2494 | return plymouth_running(); | |
2495 | } | |
68b29a9f | 2496 | |
984a2be4 | 2497 | void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) { |
25cee550 MS |
2498 | va_list ap; |
2499 | ||
2500 | if (!manager_get_show_status(m)) | |
2501 | return; | |
2502 | ||
2503 | if (!manager_is_booting_or_shutting_down(m)) | |
2504 | return; | |
2505 | ||
2506 | va_start(ap, format); | |
984a2be4 | 2507 | status_vprintf(status, true, ephemeral, format, ap); |
25cee550 MS |
2508 | va_end(ap); |
2509 | } | |
2510 | ||
68b29a9f LP |
2511 | void watch_init(Watch *w) { |
2512 | assert(w); | |
2513 | ||
2514 | w->type = WATCH_INVALID; | |
2515 | w->fd = -1; | |
2516 | } |