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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> |
830f6caa LP |
39 | |
40 | #ifdef HAVE_AUDIT | |
4927fcae | 41 | #include <libaudit.h> |
830f6caa | 42 | #endif |
60918275 | 43 | |
81527be1 LP |
44 | #include <systemd/sd-daemon.h> |
45 | ||
60918275 | 46 | #include "manager.h" |
75778e21 | 47 | #include "transaction.h" |
60918275 LP |
48 | #include "hashmap.h" |
49 | #include "macro.h" | |
50 | #include "strv.h" | |
16354eff | 51 | #include "log.h" |
2a987ee8 | 52 | #include "util.h" |
49e942b2 | 53 | #include "mkdir.h" |
ea430986 | 54 | #include "ratelimit.h" |
8e274523 LP |
55 | #include "cgroup.h" |
56 | #include "mount-setup.h" | |
9e2f7c11 | 57 | #include "unit-name.h" |
4139c1b2 LP |
58 | #include "dbus-unit.h" |
59 | #include "dbus-job.h" | |
1137a57c | 60 | #include "missing.h" |
84e3543e | 61 | #include "path-lookup.h" |
514f4ef5 | 62 | #include "special.h" |
398ef8ba | 63 | #include "bus-errors.h" |
d06dacd0 | 64 | #include "exit-status.h" |
5dc4c17f | 65 | #include "virt.h" |
e96d6be7 | 66 | #include "watchdog.h" |
b59e2465 | 67 | #include "cgroup-util.h" |
9eb977db | 68 | #include "path-util.h" |
60918275 | 69 | |
701cc384 LP |
70 | /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */ |
71 | #define GC_QUEUE_ENTRIES_MAX 16 | |
72 | ||
73 | /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */ | |
94b6dfa2 | 74 | #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC) |
701cc384 | 75 | |
8c47c732 | 76 | /* Where clients shall send notification messages to */ |
29252e9e | 77 | #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify" |
8c47c732 LP |
78 | |
79 | static int manager_setup_notify(Manager *m) { | |
80 | union { | |
81 | struct sockaddr sa; | |
82 | struct sockaddr_un un; | |
83 | } sa; | |
84 | struct epoll_event ev; | |
29252e9e | 85 | int one = 1; |
8c47c732 LP |
86 | |
87 | assert(m); | |
88 | ||
89 | m->notify_watch.type = WATCH_NOTIFY; | |
29252e9e LP |
90 | m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); |
91 | if (m->notify_watch.fd < 0) { | |
8c47c732 LP |
92 | log_error("Failed to allocate notification socket: %m"); |
93 | return -errno; | |
94 | } | |
95 | ||
96 | zero(sa); | |
97 | sa.sa.sa_family = AF_UNIX; | |
98 | ||
a821caaa | 99 | if (getpid() != 1) |
29252e9e LP |
100 | snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull()); |
101 | else | |
102 | strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path)); | |
8c47c732 | 103 | |
29252e9e | 104 | sa.un.sun_path[0] = 0; |
1d6702e8 | 105 | |
29252e9e | 106 | if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { |
8c47c732 LP |
107 | log_error("bind() failed: %m"); |
108 | return -errno; | |
109 | } | |
110 | ||
111 | if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) { | |
112 | log_error("SO_PASSCRED failed: %m"); | |
113 | return -errno; | |
114 | } | |
115 | ||
116 | zero(ev); | |
117 | ev.events = EPOLLIN; | |
118 | ev.data.ptr = &m->notify_watch; | |
119 | ||
120 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) | |
121 | return -errno; | |
122 | ||
29252e9e LP |
123 | sa.un.sun_path[0] = '@'; |
124 | m->notify_socket = strdup(sa.un.sun_path); | |
125 | if (!m->notify_socket) | |
8c47c732 LP |
126 | return -ENOMEM; |
127 | ||
b2bb3dbe LP |
128 | log_debug("Using notification socket %s", m->notify_socket); |
129 | ||
8c47c732 LP |
130 | return 0; |
131 | } | |
132 | ||
80876c20 | 133 | static int enable_special_signals(Manager *m) { |
4466ee6a | 134 | int fd; |
80876c20 LP |
135 | |
136 | assert(m); | |
137 | ||
a41b539e LP |
138 | /* Enable that we get SIGINT on control-alt-del. In containers |
139 | * this will fail with EPERM, so ignore that. */ | |
140 | if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM) | |
80876c20 LP |
141 | log_warning("Failed to enable ctrl-alt-del handling: %m"); |
142 | ||
a41b539e LP |
143 | fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); |
144 | if (fd < 0) { | |
145 | /* Support systems without virtual console */ | |
146 | if (fd != -ENOENT) | |
147 | log_warning("Failed to open /dev/tty0: %m"); | |
148 | } else { | |
80876c20 LP |
149 | /* Enable that we get SIGWINCH on kbrequest */ |
150 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
151 | log_warning("Failed to enable kbrequest handling: %s", strerror(errno)); | |
152 | ||
153 | close_nointr_nofail(fd); | |
154 | } | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
ce578209 | 159 | static int manager_setup_signals(Manager *m) { |
9152c765 LP |
160 | sigset_t mask; |
161 | struct epoll_event ev; | |
57c0c30e | 162 | struct sigaction sa; |
60918275 | 163 | |
ce578209 LP |
164 | assert(m); |
165 | ||
57c0c30e LP |
166 | /* We are not interested in SIGSTOP and friends. */ |
167 | zero(sa); | |
168 | sa.sa_handler = SIG_DFL; | |
169 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
170 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
171 | ||
ce578209 | 172 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
173 | |
174 | sigset_add_many(&mask, | |
175 | SIGCHLD, /* Child died */ | |
176 | SIGTERM, /* Reexecute daemon */ | |
177 | SIGHUP, /* Reload configuration */ | |
178 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
179 | SIGUSR2, /* systemd: dump status */ | |
180 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
181 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
182 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
183 | SIGRTMIN+0, /* systemd: start default.target */ | |
0003d1ab | 184 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
185 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
186 | SIGRTMIN+3, /* systemd: start halt.target */ | |
187 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
188 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab LP |
189 | SIGRTMIN+6, /* systemd: start kexec.target */ |
190 | SIGRTMIN+13, /* systemd: Immediate halt */ | |
191 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
192 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
193 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
0658666b LP |
194 | SIGRTMIN+20, /* systemd: enable status messages */ |
195 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
196 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
197 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
4cfa2c99 | 198 | SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */ |
253ee27a LP |
199 | SIGRTMIN+27, /* systemd: set log target to console */ |
200 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
201 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */ | |
7d793605 | 202 | -1); |
ce578209 LP |
203 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
204 | ||
ef734fd6 | 205 | m->signal_watch.type = WATCH_SIGNAL; |
ce578209 LP |
206 | if ((m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) |
207 | return -errno; | |
208 | ||
209 | zero(ev); | |
210 | ev.events = EPOLLIN; | |
211 | ev.data.ptr = &m->signal_watch; | |
212 | ||
213 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0) | |
214 | return -errno; | |
215 | ||
a3d4e06d | 216 | if (m->running_as == MANAGER_SYSTEM) |
80876c20 | 217 | return enable_special_signals(m); |
e1414003 | 218 | |
ce578209 LP |
219 | return 0; |
220 | } | |
221 | ||
71ecc858 LP |
222 | static void manager_strip_environment(Manager *m) { |
223 | assert(m); | |
224 | ||
225 | /* Remove variables from the inherited set that are part of | |
226 | * the container interface: | |
227 | * http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */ | |
228 | strv_remove_prefix(m->environment, "container="); | |
229 | strv_remove_prefix(m->environment, "container_"); | |
230 | ||
231 | /* Remove variables from the inherited set that are part of | |
232 | * the initrd interface: | |
233 | * http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */ | |
234 | strv_remove_prefix(m->environment, "RD_"); | |
235 | } | |
236 | ||
9e58ff9c | 237 | int manager_new(ManagerRunningAs running_as, Manager **_m) { |
ce578209 | 238 | Manager *m; |
8e274523 LP |
239 | int r = -ENOMEM; |
240 | ||
241 | assert(_m); | |
a5dab5ce LP |
242 | assert(running_as >= 0); |
243 | assert(running_as < _MANAGER_RUNNING_AS_MAX); | |
ce578209 | 244 | |
60918275 | 245 | if (!(m = new0(Manager, 1))) |
8e274523 | 246 | return -ENOMEM; |
60918275 | 247 | |
63983207 | 248 | dual_timestamp_get(&m->startup_timestamp); |
e537352b | 249 | |
a5dab5ce | 250 | m->running_as = running_as; |
cbd37330 | 251 | m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1; |
a16e1123 | 252 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
33be102a | 253 | m->pin_cgroupfs_fd = -1; |
f2b68789 | 254 | m->idle_pipe[0] = m->idle_pipe[1] = -1; |
80876c20 | 255 | |
4927fcae LP |
256 | #ifdef HAVE_AUDIT |
257 | m->audit_fd = -1; | |
258 | #endif | |
259 | ||
4e434314 | 260 | m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = m->dev_autofs_fd = m->swap_watch.fd = -1; |
ea430986 | 261 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 262 | |
71ecc858 LP |
263 | m->environment = strv_copy(environ); |
264 | if (!m->environment) | |
1137a57c LP |
265 | goto fail; |
266 | ||
71ecc858 LP |
267 | manager_strip_environment(m); |
268 | ||
88f06645 LP |
269 | if (running_as == MANAGER_SYSTEM) { |
270 | m->default_controllers = strv_new("cpu", NULL); | |
271 | if (!m->default_controllers) | |
272 | goto fail; | |
273 | } | |
06d4c99a | 274 | |
87f0e418 | 275 | if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) |
60918275 LP |
276 | goto fail; |
277 | ||
278 | if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) | |
279 | goto fail; | |
280 | ||
9152c765 LP |
281 | if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) |
282 | goto fail; | |
283 | ||
8e274523 LP |
284 | if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func))) |
285 | goto fail; | |
286 | ||
05e343b7 LP |
287 | if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func))) |
288 | goto fail; | |
289 | ||
9152c765 LP |
290 | if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0) |
291 | goto fail; | |
292 | ||
8e274523 LP |
293 | if ((r = manager_setup_signals(m)) < 0) |
294 | goto fail; | |
295 | ||
8e274523 | 296 | if ((r = manager_setup_cgroup(m)) < 0) |
9152c765 LP |
297 | goto fail; |
298 | ||
8c47c732 LP |
299 | if ((r = manager_setup_notify(m)) < 0) |
300 | goto fail; | |
301 | ||
f278026d | 302 | /* Try to connect to the busses, if possible. */ |
3996fbe2 | 303 | if ((r = bus_init(m, running_as != MANAGER_SYSTEM)) < 0) |
ea430986 LP |
304 | goto fail; |
305 | ||
e543deae | 306 | #ifdef HAVE_AUDIT |
5a8d081c JN |
307 | if ((m->audit_fd = audit_open()) < 0 && |
308 | /* If the kernel lacks netlink or audit support, | |
309 | * don't worry about it. */ | |
310 | errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT) | |
4927fcae | 311 | log_error("Failed to connect to audit log: %m"); |
e543deae | 312 | #endif |
4927fcae | 313 | |
72bc8d00 LP |
314 | m->taint_usr = dir_is_empty("/usr") > 0; |
315 | ||
8e274523 LP |
316 | *_m = m; |
317 | return 0; | |
60918275 LP |
318 | |
319 | fail: | |
320 | manager_free(m); | |
8e274523 | 321 | return r; |
60918275 LP |
322 | } |
323 | ||
23a177ef | 324 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
595ed347 | 325 | Unit *u; |
23a177ef LP |
326 | unsigned n = 0; |
327 | ||
328 | assert(m); | |
329 | ||
595ed347 MS |
330 | while ((u = m->cleanup_queue)) { |
331 | assert(u->in_cleanup_queue); | |
23a177ef | 332 | |
595ed347 | 333 | unit_free(u); |
23a177ef LP |
334 | n++; |
335 | } | |
336 | ||
337 | return n; | |
338 | } | |
339 | ||
eced69b3 | 340 | enum { |
35b8ca3a | 341 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
342 | GC_OFFSET_UNSURE, /* No clue */ |
343 | GC_OFFSET_GOOD, /* We still need this unit */ | |
344 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
345 | _GC_OFFSET_MAX | |
346 | }; | |
347 | ||
348 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { | |
701cc384 LP |
349 | Iterator i; |
350 | Unit *other; | |
eced69b3 | 351 | bool is_bad; |
701cc384 LP |
352 | |
353 | assert(u); | |
354 | ||
ac155bb8 MS |
355 | if (u->gc_marker == gc_marker + GC_OFFSET_GOOD || |
356 | u->gc_marker == gc_marker + GC_OFFSET_BAD || | |
357 | u->gc_marker == gc_marker + GC_OFFSET_IN_PATH) | |
701cc384 LP |
358 | return; |
359 | ||
ac155bb8 | 360 | if (u->in_cleanup_queue) |
701cc384 LP |
361 | goto bad; |
362 | ||
363 | if (unit_check_gc(u)) | |
364 | goto good; | |
365 | ||
ac155bb8 | 366 | u->gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
eced69b3 LP |
367 | |
368 | is_bad = true; | |
369 | ||
ac155bb8 | 370 | SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) { |
701cc384 LP |
371 | unit_gc_sweep(other, gc_marker); |
372 | ||
ac155bb8 | 373 | if (other->gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 374 | goto good; |
eced69b3 | 375 | |
ac155bb8 | 376 | if (other->gc_marker != gc_marker + GC_OFFSET_BAD) |
eced69b3 | 377 | is_bad = false; |
701cc384 LP |
378 | } |
379 | ||
eced69b3 LP |
380 | if (is_bad) |
381 | goto bad; | |
382 | ||
383 | /* We were unable to find anything out about this entry, so | |
384 | * let's investigate it later */ | |
ac155bb8 | 385 | u->gc_marker = gc_marker + GC_OFFSET_UNSURE; |
eced69b3 LP |
386 | unit_add_to_gc_queue(u); |
387 | return; | |
388 | ||
701cc384 | 389 | bad: |
eced69b3 LP |
390 | /* We definitely know that this one is not useful anymore, so |
391 | * let's mark it for deletion */ | |
ac155bb8 | 392 | u->gc_marker = gc_marker + GC_OFFSET_BAD; |
eced69b3 | 393 | unit_add_to_cleanup_queue(u); |
701cc384 LP |
394 | return; |
395 | ||
396 | good: | |
ac155bb8 | 397 | u->gc_marker = gc_marker + GC_OFFSET_GOOD; |
701cc384 LP |
398 | } |
399 | ||
400 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
595ed347 | 401 | Unit *u; |
701cc384 | 402 | unsigned n = 0; |
eced69b3 | 403 | unsigned gc_marker; |
701cc384 LP |
404 | |
405 | assert(m); | |
406 | ||
407 | if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) && | |
408 | (m->gc_queue_timestamp <= 0 || | |
409 | (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC))) | |
410 | return 0; | |
411 | ||
412 | log_debug("Running GC..."); | |
413 | ||
eced69b3 LP |
414 | m->gc_marker += _GC_OFFSET_MAX; |
415 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 416 | m->gc_marker = 1; |
701cc384 | 417 | |
eced69b3 LP |
418 | gc_marker = m->gc_marker; |
419 | ||
595ed347 MS |
420 | while ((u = m->gc_queue)) { |
421 | assert(u->in_gc_queue); | |
701cc384 | 422 | |
595ed347 | 423 | unit_gc_sweep(u, gc_marker); |
eced69b3 | 424 | |
595ed347 MS |
425 | LIST_REMOVE(Unit, gc_queue, m->gc_queue, u); |
426 | u->in_gc_queue = false; | |
701cc384 LP |
427 | |
428 | n++; | |
429 | ||
595ed347 MS |
430 | if (u->gc_marker == gc_marker + GC_OFFSET_BAD || |
431 | u->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
432 | log_debug("Collecting %s", u->id); | |
433 | u->gc_marker = gc_marker + GC_OFFSET_BAD; | |
434 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
435 | } |
436 | } | |
437 | ||
438 | m->n_in_gc_queue = 0; | |
439 | m->gc_queue_timestamp = 0; | |
440 | ||
441 | return n; | |
442 | } | |
443 | ||
a16e1123 | 444 | static void manager_clear_jobs_and_units(Manager *m) { |
a16e1123 | 445 | Unit *u; |
60918275 LP |
446 | |
447 | assert(m); | |
448 | ||
87f0e418 LP |
449 | while ((u = hashmap_first(m->units))) |
450 | unit_free(u); | |
964e0949 LP |
451 | |
452 | manager_dispatch_cleanup_queue(m); | |
453 | ||
454 | assert(!m->load_queue); | |
455 | assert(!m->run_queue); | |
456 | assert(!m->dbus_unit_queue); | |
457 | assert(!m->dbus_job_queue); | |
458 | assert(!m->cleanup_queue); | |
459 | assert(!m->gc_queue); | |
460 | ||
964e0949 LP |
461 | assert(hashmap_isempty(m->jobs)); |
462 | assert(hashmap_isempty(m->units)); | |
a16e1123 LP |
463 | } |
464 | ||
465 | void manager_free(Manager *m) { | |
466 | UnitType c; | |
c93ff2e9 | 467 | int i; |
87f0e418 | 468 | |
a16e1123 LP |
469 | assert(m); |
470 | ||
471 | manager_clear_jobs_and_units(m); | |
23a177ef | 472 | |
7824bbeb LP |
473 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
474 | if (unit_vtable[c]->shutdown) | |
475 | unit_vtable[c]->shutdown(m); | |
476 | ||
a16e1123 LP |
477 | /* If we reexecute ourselves, we keep the root cgroup |
478 | * around */ | |
c6c18be3 | 479 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 480 | |
5a1e9937 LP |
481 | manager_undo_generators(m); |
482 | ||
5e8d1c9a | 483 | bus_done(m); |
ea430986 | 484 | |
87f0e418 | 485 | hashmap_free(m->units); |
60918275 | 486 | hashmap_free(m->jobs); |
9152c765 | 487 | hashmap_free(m->watch_pids); |
05e343b7 | 488 | hashmap_free(m->watch_bus); |
9152c765 LP |
489 | |
490 | if (m->epoll_fd >= 0) | |
a16e1123 | 491 | close_nointr_nofail(m->epoll_fd); |
acbb0225 | 492 | if (m->signal_watch.fd >= 0) |
a16e1123 | 493 | close_nointr_nofail(m->signal_watch.fd); |
8c47c732 LP |
494 | if (m->notify_watch.fd >= 0) |
495 | close_nointr_nofail(m->notify_watch.fd); | |
60918275 | 496 | |
4927fcae LP |
497 | #ifdef HAVE_AUDIT |
498 | if (m->audit_fd >= 0) | |
499 | audit_close(m->audit_fd); | |
500 | #endif | |
501 | ||
c952c6ec LP |
502 | free(m->notify_socket); |
503 | ||
84e3543e | 504 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 505 | strv_free(m->environment); |
036643a2 | 506 | |
06d4c99a LP |
507 | strv_free(m->default_controllers); |
508 | ||
8e274523 | 509 | hashmap_free(m->cgroup_bondings); |
c6c18be3 | 510 | set_free_free(m->unit_path_cache); |
33be102a | 511 | |
f2b68789 LP |
512 | close_pipe(m->idle_pipe); |
513 | ||
664f88a7 LP |
514 | free(m->switch_root); |
515 | free(m->switch_root_init); | |
516 | ||
c93ff2e9 FC |
517 | for (i = 0; i < RLIMIT_NLIMITS; i++) |
518 | free(m->rlimit[i]); | |
519 | ||
60918275 LP |
520 | free(m); |
521 | } | |
522 | ||
a16e1123 LP |
523 | int manager_enumerate(Manager *m) { |
524 | int r = 0, q; | |
f50e0a01 | 525 | UnitType c; |
f50e0a01 LP |
526 | |
527 | assert(m); | |
528 | ||
a16e1123 LP |
529 | /* Let's ask every type to load all units from disk/kernel |
530 | * that it might know */ | |
f50e0a01 LP |
531 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
532 | if (unit_vtable[c]->enumerate) | |
a16e1123 LP |
533 | if ((q = unit_vtable[c]->enumerate(m)) < 0) |
534 | r = q; | |
f50e0a01 LP |
535 | |
536 | manager_dispatch_load_queue(m); | |
a16e1123 LP |
537 | return r; |
538 | } | |
539 | ||
540 | int manager_coldplug(Manager *m) { | |
541 | int r = 0, q; | |
542 | Iterator i; | |
543 | Unit *u; | |
544 | char *k; | |
545 | ||
546 | assert(m); | |
f50e0a01 LP |
547 | |
548 | /* Then, let's set up their initial state. */ | |
549 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
550 | ||
551 | /* ignore aliases */ | |
ac155bb8 | 552 | if (u->id != k) |
f50e0a01 LP |
553 | continue; |
554 | ||
cca098b0 LP |
555 | if ((q = unit_coldplug(u)) < 0) |
556 | r = q; | |
f50e0a01 LP |
557 | } |
558 | ||
a16e1123 LP |
559 | return r; |
560 | } | |
561 | ||
fe51822e LP |
562 | static void manager_build_unit_path_cache(Manager *m) { |
563 | char **i; | |
564 | DIR *d = NULL; | |
565 | int r; | |
566 | ||
567 | assert(m); | |
568 | ||
569 | set_free_free(m->unit_path_cache); | |
570 | ||
571 | if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) { | |
572 | log_error("Failed to allocate unit path cache."); | |
573 | return; | |
574 | } | |
575 | ||
576 | /* This simply builds a list of files we know exist, so that | |
577 | * we don't always have to go to disk */ | |
578 | ||
579 | STRV_FOREACH(i, m->lookup_paths.unit_path) { | |
580 | struct dirent *de; | |
581 | ||
582 | if (!(d = opendir(*i))) { | |
583 | log_error("Failed to open directory: %m"); | |
584 | continue; | |
585 | } | |
586 | ||
587 | while ((de = readdir(d))) { | |
588 | char *p; | |
589 | ||
590 | if (ignore_file(de->d_name)) | |
591 | continue; | |
592 | ||
44d91056 LP |
593 | p = join(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
594 | if (!p) { | |
fe51822e LP |
595 | r = -ENOMEM; |
596 | goto fail; | |
597 | } | |
598 | ||
599 | if ((r = set_put(m->unit_path_cache, p)) < 0) { | |
600 | free(p); | |
601 | goto fail; | |
602 | } | |
603 | } | |
604 | ||
605 | closedir(d); | |
606 | d = NULL; | |
607 | } | |
608 | ||
609 | return; | |
610 | ||
611 | fail: | |
612 | log_error("Failed to build unit path cache: %s", strerror(-r)); | |
613 | ||
614 | set_free_free(m->unit_path_cache); | |
615 | m->unit_path_cache = NULL; | |
616 | ||
617 | if (d) | |
618 | closedir(d); | |
619 | } | |
620 | ||
a16e1123 LP |
621 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
622 | int r, q; | |
623 | ||
624 | assert(m); | |
625 | ||
5a1e9937 LP |
626 | manager_run_generators(m); |
627 | ||
07719a21 LP |
628 | r = lookup_paths_init( |
629 | &m->lookup_paths, m->running_as, true, | |
630 | m->generator_unit_path, | |
631 | m->generator_unit_path_early, | |
632 | m->generator_unit_path_late); | |
633 | if (r < 0) | |
634 | return r; | |
635 | ||
fe51822e LP |
636 | manager_build_unit_path_cache(m); |
637 | ||
9f611ad8 LP |
638 | /* If we will deserialize make sure that during enumeration |
639 | * this is already known, so we increase the counter here | |
640 | * already */ | |
641 | if (serialization) | |
a7556052 | 642 | m->n_reloading ++; |
9f611ad8 | 643 | |
a16e1123 LP |
644 | /* First, enumerate what we can from all config files */ |
645 | r = manager_enumerate(m); | |
646 | ||
647 | /* Second, deserialize if there is something to deserialize */ | |
07719a21 LP |
648 | if (serialization) { |
649 | q = manager_deserialize(m, serialization, fds); | |
650 | if (q < 0) | |
a16e1123 | 651 | r = q; |
07719a21 | 652 | } |
a16e1123 LP |
653 | |
654 | /* Third, fire things up! */ | |
07719a21 LP |
655 | q = manager_coldplug(m); |
656 | if (q < 0) | |
a16e1123 LP |
657 | r = q; |
658 | ||
9f611ad8 | 659 | if (serialization) { |
a7556052 LP |
660 | assert(m->n_reloading > 0); |
661 | m->n_reloading --; | |
9f611ad8 LP |
662 | } |
663 | ||
a16e1123 | 664 | return r; |
f50e0a01 LP |
665 | } |
666 | ||
398ef8ba | 667 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { |
e5b5ae50 | 668 | int r; |
7527cb52 | 669 | Transaction *tr; |
e5b5ae50 LP |
670 | |
671 | assert(m); | |
672 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 673 | assert(unit); |
e5b5ae50 | 674 | assert(mode < _JOB_MODE_MAX); |
60918275 | 675 | |
398ef8ba LP |
676 | if (mode == JOB_ISOLATE && type != JOB_START) { |
677 | dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); | |
c497c7a9 | 678 | return -EINVAL; |
398ef8ba | 679 | } |
c497c7a9 | 680 | |
ac155bb8 | 681 | if (mode == JOB_ISOLATE && !unit->allow_isolate) { |
2528a7a6 LP |
682 | dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); |
683 | return -EPERM; | |
684 | } | |
685 | ||
ac155bb8 | 686 | log_debug("Trying to enqueue job %s/%s/%s", unit->id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 687 | |
e0209d83 MS |
688 | job_type_collapse(&type, unit); |
689 | ||
7527cb52 MS |
690 | tr = transaction_new(); |
691 | if (!tr) | |
692 | return -ENOMEM; | |
11dd41ce | 693 | |
7527cb52 MS |
694 | r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false, |
695 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
b94fbd30 | 696 | mode == JOB_IGNORE_DEPENDENCIES, e); |
7527cb52 MS |
697 | if (r < 0) |
698 | goto tr_abort; | |
c497c7a9 | 699 | |
7527cb52 MS |
700 | if (mode == JOB_ISOLATE) { |
701 | r = transaction_add_isolate_jobs(tr, m); | |
702 | if (r < 0) | |
703 | goto tr_abort; | |
704 | } | |
705 | ||
706 | r = transaction_activate(tr, m, mode, e); | |
707 | if (r < 0) | |
708 | goto tr_abort; | |
e5b5ae50 | 709 | |
b94fbd30 | 710 | log_debug("Enqueued job %s/%s as %u", unit->id, job_type_to_string(type), (unsigned) tr->anchor_job->id); |
f50e0a01 | 711 | |
e5b5ae50 | 712 | if (_ret) |
b94fbd30 | 713 | *_ret = tr->anchor_job; |
60918275 | 714 | |
7527cb52 | 715 | transaction_free(tr); |
e5b5ae50 | 716 | return 0; |
7527cb52 MS |
717 | |
718 | tr_abort: | |
719 | transaction_abort(tr); | |
720 | transaction_free(tr); | |
721 | return r; | |
e5b5ae50 | 722 | } |
60918275 | 723 | |
398ef8ba | 724 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { |
28247076 LP |
725 | Unit *unit; |
726 | int r; | |
727 | ||
728 | assert(m); | |
729 | assert(type < _JOB_TYPE_MAX); | |
730 | assert(name); | |
731 | assert(mode < _JOB_MODE_MAX); | |
732 | ||
398ef8ba | 733 | if ((r = manager_load_unit(m, name, NULL, NULL, &unit)) < 0) |
28247076 LP |
734 | return r; |
735 | ||
398ef8ba | 736 | return manager_add_job(m, type, unit, mode, override, e, _ret); |
28247076 LP |
737 | } |
738 | ||
60918275 LP |
739 | Job *manager_get_job(Manager *m, uint32_t id) { |
740 | assert(m); | |
741 | ||
742 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
743 | } | |
744 | ||
87f0e418 | 745 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
746 | assert(m); |
747 | assert(name); | |
748 | ||
87f0e418 | 749 | return hashmap_get(m->units, name); |
60918275 LP |
750 | } |
751 | ||
c1e1601e | 752 | unsigned manager_dispatch_load_queue(Manager *m) { |
595ed347 | 753 | Unit *u; |
c1e1601e | 754 | unsigned n = 0; |
60918275 LP |
755 | |
756 | assert(m); | |
757 | ||
223dabab LP |
758 | /* Make sure we are not run recursively */ |
759 | if (m->dispatching_load_queue) | |
c1e1601e | 760 | return 0; |
223dabab LP |
761 | |
762 | m->dispatching_load_queue = true; | |
763 | ||
87f0e418 | 764 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
765 | * tries to load its data until the queue is empty */ |
766 | ||
595ed347 MS |
767 | while ((u = m->load_queue)) { |
768 | assert(u->in_load_queue); | |
034c6ed7 | 769 | |
595ed347 | 770 | unit_load(u); |
c1e1601e | 771 | n++; |
60918275 LP |
772 | } |
773 | ||
223dabab | 774 | m->dispatching_load_queue = false; |
c1e1601e | 775 | return n; |
60918275 LP |
776 | } |
777 | ||
398ef8ba | 778 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
87f0e418 | 779 | Unit *ret; |
7d17cfbc | 780 | UnitType t; |
60918275 LP |
781 | int r; |
782 | ||
783 | assert(m); | |
9e2f7c11 | 784 | assert(name || path); |
60918275 | 785 | |
db06e3b6 LP |
786 | /* This will prepare the unit for loading, but not actually |
787 | * load anything from disk. */ | |
0301abf4 | 788 | |
398ef8ba LP |
789 | if (path && !is_path(path)) { |
790 | dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); | |
9e2f7c11 | 791 | return -EINVAL; |
398ef8ba | 792 | } |
9e2f7c11 LP |
793 | |
794 | if (!name) | |
9eb977db | 795 | name = path_get_file_name(path); |
9e2f7c11 | 796 | |
7d17cfbc MS |
797 | t = unit_name_to_type(name); |
798 | ||
5f739699 | 799 | if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) { |
398ef8ba | 800 | dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); |
9e2f7c11 | 801 | return -EINVAL; |
398ef8ba | 802 | } |
60918275 | 803 | |
7d17cfbc MS |
804 | ret = manager_get_unit(m, name); |
805 | if (ret) { | |
034c6ed7 | 806 | *_ret = ret; |
413d6313 | 807 | return 1; |
034c6ed7 | 808 | } |
60918275 | 809 | |
7d17cfbc MS |
810 | ret = unit_new(m, unit_vtable[t]->object_size); |
811 | if (!ret) | |
60918275 LP |
812 | return -ENOMEM; |
813 | ||
7d17cfbc | 814 | if (path) { |
ac155bb8 MS |
815 | ret->fragment_path = strdup(path); |
816 | if (!ret->fragment_path) { | |
0301abf4 LP |
817 | unit_free(ret); |
818 | return -ENOMEM; | |
819 | } | |
7d17cfbc | 820 | } |
0301abf4 | 821 | |
87f0e418 LP |
822 | if ((r = unit_add_name(ret, name)) < 0) { |
823 | unit_free(ret); | |
1ffba6fe | 824 | return r; |
60918275 LP |
825 | } |
826 | ||
87f0e418 | 827 | unit_add_to_load_queue(ret); |
c1e1601e | 828 | unit_add_to_dbus_queue(ret); |
949061f0 | 829 | unit_add_to_gc_queue(ret); |
c1e1601e | 830 | |
db06e3b6 LP |
831 | if (_ret) |
832 | *_ret = ret; | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
398ef8ba | 837 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
db06e3b6 LP |
838 | int r; |
839 | ||
840 | assert(m); | |
841 | ||
842 | /* This will load the service information files, but not actually | |
843 | * start any services or anything. */ | |
844 | ||
398ef8ba | 845 | if ((r = manager_load_unit_prepare(m, name, path, e, _ret)) != 0) |
db06e3b6 LP |
846 | return r; |
847 | ||
f50e0a01 | 848 | manager_dispatch_load_queue(m); |
60918275 | 849 | |
9e2f7c11 | 850 | if (_ret) |
413d6313 | 851 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 852 | |
60918275 LP |
853 | return 0; |
854 | } | |
a66d02c3 | 855 | |
cea8e32e | 856 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 857 | Iterator i; |
a66d02c3 LP |
858 | Job *j; |
859 | ||
860 | assert(s); | |
861 | assert(f); | |
862 | ||
034c6ed7 | 863 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 864 | job_dump(j, f, prefix); |
a66d02c3 LP |
865 | } |
866 | ||
87f0e418 | 867 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 868 | Iterator i; |
87f0e418 | 869 | Unit *u; |
11dd41ce | 870 | const char *t; |
a66d02c3 LP |
871 | |
872 | assert(s); | |
873 | assert(f); | |
874 | ||
87f0e418 | 875 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
ac155bb8 | 876 | if (u->id == t) |
87f0e418 | 877 | unit_dump(u, f, prefix); |
a66d02c3 | 878 | } |
7fad411c LP |
879 | |
880 | void manager_clear_jobs(Manager *m) { | |
881 | Job *j; | |
882 | ||
883 | assert(m); | |
884 | ||
7fad411c | 885 | while ((j = hashmap_first(m->jobs))) |
5273510e MS |
886 | /* No need to recurse. We're cancelling all jobs. */ |
887 | job_finish_and_invalidate(j, JOB_CANCELED, false); | |
7fad411c | 888 | } |
83c60c9f | 889 | |
c1e1601e | 890 | unsigned manager_dispatch_run_queue(Manager *m) { |
83c60c9f | 891 | Job *j; |
c1e1601e | 892 | unsigned n = 0; |
83c60c9f | 893 | |
034c6ed7 | 894 | if (m->dispatching_run_queue) |
c1e1601e | 895 | return 0; |
034c6ed7 LP |
896 | |
897 | m->dispatching_run_queue = true; | |
9152c765 | 898 | |
034c6ed7 | 899 | while ((j = m->run_queue)) { |
ac1135be | 900 | assert(j->installed); |
034c6ed7 LP |
901 | assert(j->in_run_queue); |
902 | ||
903 | job_run_and_invalidate(j); | |
c1e1601e | 904 | n++; |
9152c765 | 905 | } |
034c6ed7 LP |
906 | |
907 | m->dispatching_run_queue = false; | |
c1e1601e LP |
908 | return n; |
909 | } | |
910 | ||
911 | unsigned manager_dispatch_dbus_queue(Manager *m) { | |
912 | Job *j; | |
595ed347 | 913 | Unit *u; |
c1e1601e LP |
914 | unsigned n = 0; |
915 | ||
916 | assert(m); | |
917 | ||
918 | if (m->dispatching_dbus_queue) | |
919 | return 0; | |
920 | ||
921 | m->dispatching_dbus_queue = true; | |
922 | ||
595ed347 MS |
923 | while ((u = m->dbus_unit_queue)) { |
924 | assert(u->in_dbus_queue); | |
c1e1601e | 925 | |
595ed347 | 926 | bus_unit_send_change_signal(u); |
c1e1601e LP |
927 | n++; |
928 | } | |
929 | ||
930 | while ((j = m->dbus_job_queue)) { | |
931 | assert(j->in_dbus_queue); | |
932 | ||
933 | bus_job_send_change_signal(j); | |
934 | n++; | |
935 | } | |
936 | ||
937 | m->dispatching_dbus_queue = false; | |
938 | return n; | |
9152c765 LP |
939 | } |
940 | ||
8c47c732 LP |
941 | static int manager_process_notify_fd(Manager *m) { |
942 | ssize_t n; | |
943 | ||
944 | assert(m); | |
945 | ||
946 | for (;;) { | |
947 | char buf[4096]; | |
948 | struct msghdr msghdr; | |
949 | struct iovec iovec; | |
950 | struct ucred *ucred; | |
951 | union { | |
952 | struct cmsghdr cmsghdr; | |
953 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred))]; | |
954 | } control; | |
955 | Unit *u; | |
956 | char **tags; | |
957 | ||
958 | zero(iovec); | |
959 | iovec.iov_base = buf; | |
960 | iovec.iov_len = sizeof(buf)-1; | |
961 | ||
962 | zero(control); | |
963 | zero(msghdr); | |
964 | msghdr.msg_iov = &iovec; | |
965 | msghdr.msg_iovlen = 1; | |
966 | msghdr.msg_control = &control; | |
967 | msghdr.msg_controllen = sizeof(control); | |
968 | ||
969 | if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 0) { | |
970 | if (n >= 0) | |
971 | return -EIO; | |
972 | ||
f6144808 | 973 | if (errno == EAGAIN || errno == EINTR) |
8c47c732 LP |
974 | break; |
975 | ||
976 | return -errno; | |
977 | } | |
978 | ||
979 | if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) || | |
980 | control.cmsghdr.cmsg_level != SOL_SOCKET || | |
981 | control.cmsghdr.cmsg_type != SCM_CREDENTIALS || | |
982 | control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) { | |
983 | log_warning("Received notify message without credentials. Ignoring."); | |
984 | continue; | |
985 | } | |
986 | ||
987 | ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); | |
988 | ||
c6c18be3 | 989 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)))) |
8c47c732 LP |
990 | if (!(u = cgroup_unit_by_pid(m, ucred->pid))) { |
991 | log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); | |
992 | continue; | |
993 | } | |
994 | ||
8c40acf7 LP |
995 | assert((size_t) n < sizeof(buf)); |
996 | buf[n] = 0; | |
8c47c732 LP |
997 | if (!(tags = strv_split(buf, "\n\r"))) |
998 | return -ENOMEM; | |
999 | ||
ac155bb8 | 1000 | log_debug("Got notification message for unit %s", u->id); |
8c47c732 LP |
1001 | |
1002 | if (UNIT_VTABLE(u)->notify_message) | |
c952c6ec | 1003 | UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); |
8c47c732 LP |
1004 | |
1005 | strv_free(tags); | |
1006 | } | |
1007 | ||
1008 | return 0; | |
1009 | } | |
1010 | ||
034c6ed7 | 1011 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1012 | assert(m); |
1013 | ||
1014 | for (;;) { | |
1015 | siginfo_t si; | |
87f0e418 | 1016 | Unit *u; |
8c47c732 | 1017 | int r; |
9152c765 LP |
1018 | |
1019 | zero(si); | |
4112df16 LP |
1020 | |
1021 | /* First we call waitd() for a PID and do not reap the | |
1022 | * zombie. That way we can still access /proc/$PID for | |
1023 | * it while it is a zombie. */ | |
1024 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1025 | |
1026 | if (errno == ECHILD) | |
1027 | break; | |
1028 | ||
4112df16 LP |
1029 | if (errno == EINTR) |
1030 | continue; | |
1031 | ||
9152c765 | 1032 | return -errno; |
acbb0225 | 1033 | } |
9152c765 | 1034 | |
4112df16 | 1035 | if (si.si_pid <= 0) |
9152c765 LP |
1036 | break; |
1037 | ||
15d5d9d9 | 1038 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
4112df16 LP |
1039 | char *name = NULL; |
1040 | ||
87d2c1ff | 1041 | get_process_comm(si.si_pid, &name); |
bb00e604 | 1042 | log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); |
4112df16 LP |
1043 | free(name); |
1044 | } | |
1045 | ||
8c47c732 LP |
1046 | /* Let's flush any message the dying child might still |
1047 | * have queued for us. This ensures that the process | |
1048 | * still exists in /proc so that we can figure out | |
1049 | * which cgroup and hence unit it belongs to. */ | |
1050 | if ((r = manager_process_notify_fd(m)) < 0) | |
1051 | return r; | |
1052 | ||
1053 | /* And now figure out the unit this belongs to */ | |
c6c18be3 | 1054 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)))) |
8c47c732 LP |
1055 | u = cgroup_unit_by_pid(m, si.si_pid); |
1056 | ||
4112df16 LP |
1057 | /* And now, we actually reap the zombie. */ |
1058 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
1059 | if (errno == EINTR) | |
1060 | continue; | |
1061 | ||
1062 | return -errno; | |
1063 | } | |
1064 | ||
034c6ed7 LP |
1065 | if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) |
1066 | continue; | |
1067 | ||
bb00e604 LP |
1068 | log_debug("Child %lu died (code=%s, status=%i/%s)", |
1069 | (long unsigned) si.si_pid, | |
4112df16 LP |
1070 | sigchld_code_to_string(si.si_code), |
1071 | si.si_status, | |
d06dacd0 LP |
1072 | strna(si.si_code == CLD_EXITED |
1073 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
1074 | : signal_to_string(si.si_status))); | |
acbb0225 | 1075 | |
8c47c732 | 1076 | if (!u) |
9152c765 LP |
1077 | continue; |
1078 | ||
ac155bb8 | 1079 | log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->id); |
6c1a0478 | 1080 | |
c6c18be3 | 1081 | hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
87f0e418 | 1082 | UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); |
9152c765 LP |
1083 | } |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
7d793605 | 1088 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
28247076 | 1089 | int r; |
398ef8ba LP |
1090 | DBusError error; |
1091 | ||
1092 | dbus_error_init(&error); | |
1093 | ||
af2d49f7 | 1094 | log_debug("Activating special unit %s", name); |
1e001f52 | 1095 | |
398ef8ba LP |
1096 | if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0) |
1097 | log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r)); | |
28247076 | 1098 | |
398ef8ba | 1099 | dbus_error_free(&error); |
a1b256b0 LP |
1100 | |
1101 | return r; | |
28247076 LP |
1102 | } |
1103 | ||
a16e1123 | 1104 | static int manager_process_signal_fd(Manager *m) { |
9152c765 LP |
1105 | ssize_t n; |
1106 | struct signalfd_siginfo sfsi; | |
1107 | bool sigchld = false; | |
1108 | ||
1109 | assert(m); | |
1110 | ||
1111 | for (;;) { | |
acbb0225 | 1112 | if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) { |
9152c765 LP |
1113 | |
1114 | if (n >= 0) | |
1115 | return -EIO; | |
1116 | ||
63090775 | 1117 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 1118 | break; |
9152c765 LP |
1119 | |
1120 | return -errno; | |
1121 | } | |
1122 | ||
67370238 LP |
1123 | if (sfsi.ssi_pid > 0) { |
1124 | char *p = NULL; | |
1125 | ||
87d2c1ff | 1126 | get_process_comm(sfsi.ssi_pid, &p); |
dfa7f7e1 | 1127 | |
67370238 | 1128 | log_debug("Received SIG%s from PID %lu (%s).", |
4e240ab0 | 1129 | signal_to_string(sfsi.ssi_signo), |
67370238 LP |
1130 | (unsigned long) sfsi.ssi_pid, strna(p)); |
1131 | free(p); | |
1132 | } else | |
4e240ab0 | 1133 | log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo)); |
1e001f52 | 1134 | |
b9cd2ec1 LP |
1135 | switch (sfsi.ssi_signo) { |
1136 | ||
4112df16 | 1137 | case SIGCHLD: |
9152c765 | 1138 | sigchld = true; |
b9cd2ec1 LP |
1139 | break; |
1140 | ||
6632c602 | 1141 | case SIGTERM: |
a3d4e06d | 1142 | if (m->running_as == MANAGER_SYSTEM) { |
db06e3b6 LP |
1143 | /* This is for compatibility with the |
1144 | * original sysvinit */ | |
e11dc4a2 | 1145 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
1146 | break; |
1147 | } | |
84e9af1e | 1148 | |
a1b256b0 | 1149 | /* Fall through */ |
e11dc4a2 LP |
1150 | |
1151 | case SIGINT: | |
a3d4e06d | 1152 | if (m->running_as == MANAGER_SYSTEM) { |
7d793605 | 1153 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); |
84e9af1e LP |
1154 | break; |
1155 | } | |
1156 | ||
a1b256b0 | 1157 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 1158 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
1159 | m->exit_code = MANAGER_EXIT; |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | break; | |
84e9af1e | 1164 | |
28247076 | 1165 | case SIGWINCH: |
a3d4e06d | 1166 | if (m->running_as == MANAGER_SYSTEM) |
7d793605 | 1167 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 1168 | |
28247076 LP |
1169 | /* This is a nop on non-init */ |
1170 | break; | |
84e9af1e | 1171 | |
28247076 | 1172 | case SIGPWR: |
a3d4e06d | 1173 | if (m->running_as == MANAGER_SYSTEM) |
7d793605 | 1174 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 1175 | |
28247076 | 1176 | /* This is a nop on non-init */ |
84e9af1e | 1177 | break; |
6632c602 | 1178 | |
1005d14f | 1179 | case SIGUSR1: { |
57ee42ce LP |
1180 | Unit *u; |
1181 | ||
1182 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
1183 | ||
1184 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
1185 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 1186 | bus_init(m, true); |
57ee42ce LP |
1187 | } |
1188 | ||
1189 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
1190 | log_info("Loading D-Bus service..."); | |
7d793605 | 1191 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
1192 | } |
1193 | ||
1194 | break; | |
1195 | } | |
1196 | ||
2149e37c LP |
1197 | case SIGUSR2: { |
1198 | FILE *f; | |
1199 | char *dump = NULL; | |
1200 | size_t size; | |
1201 | ||
1202 | if (!(f = open_memstream(&dump, &size))) { | |
1203 | log_warning("Failed to allocate memory stream."); | |
1204 | break; | |
1205 | } | |
1206 | ||
1207 | manager_dump_units(m, f, "\t"); | |
1208 | manager_dump_jobs(m, f, "\t"); | |
1209 | ||
1210 | if (ferror(f)) { | |
1211 | fclose(f); | |
1212 | free(dump); | |
1213 | log_warning("Failed to write status stream"); | |
1214 | break; | |
1215 | } | |
1216 | ||
1217 | fclose(f); | |
1218 | log_dump(LOG_INFO, dump); | |
1219 | free(dump); | |
1220 | ||
1005d14f | 1221 | break; |
2149e37c | 1222 | } |
1005d14f | 1223 | |
a16e1123 LP |
1224 | case SIGHUP: |
1225 | m->exit_code = MANAGER_RELOAD; | |
1226 | break; | |
1227 | ||
7d793605 | 1228 | default: { |
253ee27a | 1229 | |
0003d1ab LP |
1230 | /* Starting SIGRTMIN+0 */ |
1231 | static const char * const target_table[] = { | |
7d793605 LP |
1232 | [0] = SPECIAL_DEFAULT_TARGET, |
1233 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 1234 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
1235 | [3] = SPECIAL_HALT_TARGET, |
1236 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
1237 | [5] = SPECIAL_REBOOT_TARGET, |
1238 | [6] = SPECIAL_KEXEC_TARGET | |
1239 | }; | |
1240 | ||
1241 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
1242 | static const ManagerExitCode code_table[] = { | |
1243 | [0] = MANAGER_HALT, | |
1244 | [1] = MANAGER_POWEROFF, | |
1245 | [2] = MANAGER_REBOOT, | |
1246 | [3] = MANAGER_KEXEC | |
7d793605 LP |
1247 | }; |
1248 | ||
1249 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 1250 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
1251 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
1252 | manager_start_target(m, target_table[idx], | |
1253 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
1254 | break; |
1255 | } | |
1256 | ||
0003d1ab LP |
1257 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
1258 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
1259 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
1260 | break; | |
1261 | } | |
1262 | ||
0658666b LP |
1263 | switch (sfsi.ssi_signo - SIGRTMIN) { |
1264 | ||
1265 | case 20: | |
1266 | log_debug("Enabling showing of status."); | |
27d340c7 | 1267 | manager_set_show_status(m, true); |
0658666b LP |
1268 | break; |
1269 | ||
1270 | case 21: | |
1271 | log_debug("Disabling showing of status."); | |
27d340c7 | 1272 | manager_set_show_status(m, false); |
0658666b LP |
1273 | break; |
1274 | ||
253ee27a LP |
1275 | case 22: |
1276 | log_set_max_level(LOG_DEBUG); | |
1277 | log_notice("Setting log level to debug."); | |
1278 | break; | |
1279 | ||
1280 | case 23: | |
1281 | log_set_max_level(LOG_INFO); | |
1282 | log_notice("Setting log level to info."); | |
1283 | break; | |
1284 | ||
4cfa2c99 LP |
1285 | case 26: |
1286 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |
1287 | log_notice("Setting log target to journal-or-kmsg."); | |
1288 | break; | |
1289 | ||
253ee27a LP |
1290 | case 27: |
1291 | log_set_target(LOG_TARGET_CONSOLE); | |
1292 | log_notice("Setting log target to console."); | |
1293 | break; | |
1294 | ||
1295 | case 28: | |
1296 | log_set_target(LOG_TARGET_KMSG); | |
1297 | log_notice("Setting log target to kmsg."); | |
1298 | break; | |
1299 | ||
1300 | case 29: | |
1301 | log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); | |
1302 | log_notice("Setting log target to syslog-or-kmsg."); | |
1303 | break; | |
1304 | ||
0658666b | 1305 | default: |
4e240ab0 | 1306 | log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo)); |
0658666b | 1307 | } |
b9cd2ec1 | 1308 | } |
7d793605 | 1309 | } |
9152c765 LP |
1310 | } |
1311 | ||
1312 | if (sigchld) | |
034c6ed7 LP |
1313 | return manager_dispatch_sigchld(m); |
1314 | ||
1315 | return 0; | |
1316 | } | |
1317 | ||
a16e1123 | 1318 | static int process_event(Manager *m, struct epoll_event *ev) { |
034c6ed7 | 1319 | int r; |
acbb0225 | 1320 | Watch *w; |
034c6ed7 LP |
1321 | |
1322 | assert(m); | |
1323 | assert(ev); | |
1324 | ||
3df5bf61 | 1325 | assert_se(w = ev->data.ptr); |
034c6ed7 | 1326 | |
40dde66f LP |
1327 | if (w->type == WATCH_INVALID) |
1328 | return 0; | |
1329 | ||
acbb0225 | 1330 | switch (w->type) { |
034c6ed7 | 1331 | |
ef734fd6 | 1332 | case WATCH_SIGNAL: |
034c6ed7 | 1333 | |
acbb0225 | 1334 | /* An incoming signal? */ |
f94ea366 | 1335 | if (ev->events != EPOLLIN) |
acbb0225 | 1336 | return -EINVAL; |
034c6ed7 | 1337 | |
a16e1123 | 1338 | if ((r = manager_process_signal_fd(m)) < 0) |
acbb0225 | 1339 | return r; |
034c6ed7 | 1340 | |
acbb0225 | 1341 | break; |
034c6ed7 | 1342 | |
8c47c732 LP |
1343 | case WATCH_NOTIFY: |
1344 | ||
1345 | /* An incoming daemon notification event? */ | |
1346 | if (ev->events != EPOLLIN) | |
1347 | return -EINVAL; | |
1348 | ||
1349 | if ((r = manager_process_notify_fd(m)) < 0) | |
1350 | return r; | |
1351 | ||
1352 | break; | |
1353 | ||
acbb0225 | 1354 | case WATCH_FD: |
034c6ed7 | 1355 | |
acbb0225 | 1356 | /* Some fd event, to be dispatched to the units */ |
ea430986 | 1357 | UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); |
acbb0225 | 1358 | break; |
034c6ed7 | 1359 | |
faf919f1 LP |
1360 | case WATCH_UNIT_TIMER: |
1361 | case WATCH_JOB_TIMER: { | |
acbb0225 LP |
1362 | uint64_t v; |
1363 | ssize_t k; | |
034c6ed7 | 1364 | |
acbb0225 | 1365 | /* Some timer event, to be dispatched to the units */ |
be888ebb | 1366 | if ((k = read(w->fd, &v, sizeof(v))) != sizeof(v)) { |
034c6ed7 | 1367 | |
acbb0225 LP |
1368 | if (k < 0 && (errno == EINTR || errno == EAGAIN)) |
1369 | break; | |
034c6ed7 | 1370 | |
acbb0225 | 1371 | return k < 0 ? -errno : -EIO; |
034c6ed7 LP |
1372 | } |
1373 | ||
faf919f1 LP |
1374 | if (w->type == WATCH_UNIT_TIMER) |
1375 | UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); | |
1376 | else | |
1377 | job_timer_event(w->data.job, v, w); | |
acbb0225 LP |
1378 | break; |
1379 | } | |
1380 | ||
ef734fd6 LP |
1381 | case WATCH_MOUNT: |
1382 | /* Some mount table change, intended for the mount subsystem */ | |
1383 | mount_fd_event(m, ev->events); | |
1384 | break; | |
1385 | ||
4e434314 LP |
1386 | case WATCH_SWAP: |
1387 | /* Some swap table change, intended for the swap subsystem */ | |
1388 | swap_fd_event(m, ev->events); | |
1389 | break; | |
1390 | ||
f94ea366 LP |
1391 | case WATCH_UDEV: |
1392 | /* Some notification from udev, intended for the device subsystem */ | |
1393 | device_fd_event(m, ev->events); | |
1394 | break; | |
1395 | ||
ea430986 LP |
1396 | case WATCH_DBUS_WATCH: |
1397 | bus_watch_event(m, w, ev->events); | |
1398 | break; | |
1399 | ||
1400 | case WATCH_DBUS_TIMEOUT: | |
1401 | bus_timeout_event(m, w, ev->events); | |
1402 | break; | |
1403 | ||
acbb0225 | 1404 | default: |
c5fd1e57 | 1405 | log_error("event type=%i", w->type); |
acbb0225 | 1406 | assert_not_reached("Unknown epoll event type."); |
034c6ed7 | 1407 | } |
9152c765 LP |
1408 | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | int manager_loop(Manager *m) { | |
1413 | int r; | |
9152c765 | 1414 | |
fac9f8df | 1415 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 1416 | |
9152c765 | 1417 | assert(m); |
a16e1123 | 1418 | m->exit_code = MANAGER_RUNNING; |
9152c765 | 1419 | |
fe51822e LP |
1420 | /* Release the path cache */ |
1421 | set_free_free(m->unit_path_cache); | |
1422 | m->unit_path_cache = NULL; | |
1423 | ||
b0c918b9 LP |
1424 | manager_check_finished(m); |
1425 | ||
a4312405 LP |
1426 | /* There might still be some zombies hanging around from |
1427 | * before we were exec()'ed. Leat's reap them */ | |
e96d6be7 LP |
1428 | r = manager_dispatch_sigchld(m); |
1429 | if (r < 0) | |
a4312405 LP |
1430 | return r; |
1431 | ||
a16e1123 | 1432 | while (m->exit_code == MANAGER_RUNNING) { |
957ca890 LP |
1433 | struct epoll_event event; |
1434 | int n; | |
c757a65b | 1435 | int wait_msec = -1; |
9152c765 | 1436 | |
c757a65b | 1437 | if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) |
e96d6be7 LP |
1438 | watchdog_ping(); |
1439 | ||
ea430986 LP |
1440 | if (!ratelimit_test(&rl)) { |
1441 | /* Yay, something is going seriously wrong, pause a little */ | |
1442 | log_warning("Looping too fast. Throttling execution a little."); | |
1443 | sleep(1); | |
e96d6be7 | 1444 | continue; |
ea430986 LP |
1445 | } |
1446 | ||
37a8e683 | 1447 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
1448 | continue; |
1449 | ||
37a8e683 | 1450 | if (manager_dispatch_run_queue(m) > 0) |
701cc384 LP |
1451 | continue; |
1452 | ||
37a8e683 | 1453 | if (bus_dispatch(m) > 0) |
c1e1601e | 1454 | continue; |
034c6ed7 | 1455 | |
37a8e683 | 1456 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e LP |
1457 | continue; |
1458 | ||
37a8e683 | 1459 | if (manager_dispatch_gc_queue(m) > 0) |
c1e1601e LP |
1460 | continue; |
1461 | ||
1462 | if (manager_dispatch_dbus_queue(m) > 0) | |
ea430986 | 1463 | continue; |
ea430986 | 1464 | |
e04aad61 LP |
1465 | if (swap_dispatch_reload(m) > 0) |
1466 | continue; | |
1467 | ||
c757a65b LP |
1468 | /* Sleep for half the watchdog time */ |
1469 | if (m->runtime_watchdog > 0 && m->running_as == MANAGER_SYSTEM) { | |
1470 | wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC); | |
1471 | if (wait_msec <= 0) | |
1472 | wait_msec = 1; | |
1473 | } else | |
1474 | wait_msec = -1; | |
1475 | ||
e96d6be7 LP |
1476 | n = epoll_wait(m->epoll_fd, &event, 1, wait_msec); |
1477 | if (n < 0) { | |
9152c765 | 1478 | |
6089f4a9 | 1479 | if (errno == EINTR) |
9152c765 LP |
1480 | continue; |
1481 | ||
1482 | return -errno; | |
e96d6be7 LP |
1483 | } else if (n == 0) |
1484 | continue; | |
9152c765 | 1485 | |
957ca890 | 1486 | assert(n == 1); |
b9cd2ec1 | 1487 | |
e96d6be7 LP |
1488 | r = process_event(m, &event); |
1489 | if (r < 0) | |
957ca890 | 1490 | return r; |
a16e1123 | 1491 | } |
957ca890 | 1492 | |
a16e1123 | 1493 | return m->exit_code; |
83c60c9f | 1494 | } |
ea430986 | 1495 | |
80fbf05e | 1496 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) { |
ea430986 LP |
1497 | char *n; |
1498 | Unit *u; | |
80fbf05e | 1499 | int r; |
ea430986 LP |
1500 | |
1501 | assert(m); | |
1502 | assert(s); | |
1503 | assert(_u); | |
1504 | ||
1505 | if (!startswith(s, "/org/freedesktop/systemd1/unit/")) | |
1506 | return -EINVAL; | |
1507 | ||
80fbf05e MS |
1508 | n = bus_path_unescape(s+31); |
1509 | if (!n) | |
ea430986 LP |
1510 | return -ENOMEM; |
1511 | ||
80fbf05e | 1512 | r = manager_load_unit(m, n, NULL, e, &u); |
ea430986 LP |
1513 | free(n); |
1514 | ||
80fbf05e MS |
1515 | if (r < 0) |
1516 | return r; | |
ea430986 LP |
1517 | |
1518 | *_u = u; | |
1519 | ||
1520 | return 0; | |
1521 | } | |
86fbf370 LP |
1522 | |
1523 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
1524 | Job *j; | |
1525 | unsigned id; | |
1526 | int r; | |
1527 | ||
1528 | assert(m); | |
1529 | assert(s); | |
1530 | assert(_j); | |
1531 | ||
1532 | if (!startswith(s, "/org/freedesktop/systemd1/job/")) | |
1533 | return -EINVAL; | |
1534 | ||
1535 | if ((r = safe_atou(s + 30, &id)) < 0) | |
1536 | return r; | |
1537 | ||
1538 | if (!(j = manager_get_job(m, id))) | |
1539 | return -ENOENT; | |
1540 | ||
1541 | *_j = j; | |
1542 | ||
1543 | return 0; | |
1544 | } | |
dfcd764e | 1545 | |
4927fcae | 1546 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 1547 | |
4927fcae LP |
1548 | #ifdef HAVE_AUDIT |
1549 | char *p; | |
e537352b | 1550 | |
4927fcae | 1551 | if (m->audit_fd < 0) |
e537352b LP |
1552 | return; |
1553 | ||
bbd3a7ba LP |
1554 | /* Don't generate audit events if the service was already |
1555 | * started and we're just deserializing */ | |
a7556052 | 1556 | if (m->n_reloading > 0) |
bbd3a7ba LP |
1557 | return; |
1558 | ||
f1dd0c3f LP |
1559 | if (m->running_as != MANAGER_SYSTEM) |
1560 | return; | |
1561 | ||
ac155bb8 | 1562 | if (u->type != UNIT_SERVICE) |
f1dd0c3f LP |
1563 | return; |
1564 | ||
ac155bb8 | 1565 | if (!(p = unit_name_to_prefix_and_instance(u->id))) { |
4927fcae | 1566 | log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM)); |
e537352b LP |
1567 | return; |
1568 | } | |
1569 | ||
391ade86 | 1570 | if (audit_log_user_comm_message(m->audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) { |
391ade86 LP |
1571 | if (errno == EPERM) { |
1572 | /* We aren't allowed to send audit messages? | |
44785992 | 1573 | * Then let's not retry again. */ |
391ade86 LP |
1574 | audit_close(m->audit_fd); |
1575 | m->audit_fd = -1; | |
44785992 LP |
1576 | } else |
1577 | log_warning("Failed to send audit message: %m"); | |
391ade86 | 1578 | } |
e537352b | 1579 | |
4927fcae LP |
1580 | free(p); |
1581 | #endif | |
e537352b | 1582 | |
e537352b LP |
1583 | } |
1584 | ||
e983b760 LP |
1585 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
1586 | int fd = -1; | |
1587 | union sockaddr_union sa; | |
1588 | int n = 0; | |
1589 | char *message = NULL; | |
e983b760 LP |
1590 | |
1591 | /* Don't generate plymouth events if the service was already | |
1592 | * started and we're just deserializing */ | |
a7556052 | 1593 | if (m->n_reloading > 0) |
e983b760 LP |
1594 | return; |
1595 | ||
1596 | if (m->running_as != MANAGER_SYSTEM) | |
1597 | return; | |
1598 | ||
ac155bb8 MS |
1599 | if (u->type != UNIT_SERVICE && |
1600 | u->type != UNIT_MOUNT && | |
1601 | u->type != UNIT_SWAP) | |
e983b760 LP |
1602 | return; |
1603 | ||
1604 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
1605 | * message then wait for plymouth */ | |
1606 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
1607 | log_error("socket() failed: %m"); | |
1608 | return; | |
1609 | } | |
1610 | ||
1611 | zero(sa); | |
1612 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
1613 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
1614 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
e983b760 LP |
1615 | |
1616 | if (errno != EPIPE && | |
1617 | errno != EAGAIN && | |
1618 | errno != ENOENT && | |
1619 | errno != ECONNREFUSED && | |
1620 | errno != ECONNRESET && | |
1621 | errno != ECONNABORTED) | |
1622 | log_error("connect() failed: %m"); | |
1623 | ||
1624 | goto finish; | |
1625 | } | |
1626 | ||
ac155bb8 | 1627 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) { |
e983b760 LP |
1628 | log_error("Out of memory"); |
1629 | goto finish; | |
1630 | } | |
1631 | ||
1632 | errno = 0; | |
bd40a2d8 | 1633 | if (write(fd, message, n + 1) != n + 1) { |
e983b760 LP |
1634 | |
1635 | if (errno != EPIPE && | |
1636 | errno != EAGAIN && | |
1637 | errno != ENOENT && | |
1638 | errno != ECONNREFUSED && | |
1639 | errno != ECONNRESET && | |
1640 | errno != ECONNABORTED) | |
1641 | log_error("Failed to write Plymouth message: %m"); | |
1642 | ||
1643 | goto finish; | |
1644 | } | |
1645 | ||
1646 | finish: | |
1647 | if (fd >= 0) | |
1648 | close_nointr_nofail(fd); | |
1649 | ||
1650 | free(message); | |
1651 | } | |
1652 | ||
05e343b7 LP |
1653 | void manager_dispatch_bus_name_owner_changed( |
1654 | Manager *m, | |
1655 | const char *name, | |
1656 | const char* old_owner, | |
1657 | const char *new_owner) { | |
1658 | ||
1659 | Unit *u; | |
1660 | ||
1661 | assert(m); | |
1662 | assert(name); | |
1663 | ||
1664 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1665 | return; | |
1666 | ||
1667 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
1668 | } | |
1669 | ||
1670 | void manager_dispatch_bus_query_pid_done( | |
1671 | Manager *m, | |
1672 | const char *name, | |
1673 | pid_t pid) { | |
1674 | ||
1675 | Unit *u; | |
1676 | ||
1677 | assert(m); | |
1678 | assert(name); | |
1679 | assert(pid >= 1); | |
1680 | ||
1681 | if (!(u = hashmap_get(m->watch_bus, name))) | |
1682 | return; | |
1683 | ||
1684 | UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); | |
1685 | } | |
1686 | ||
d8d5ab98 | 1687 | int manager_open_serialization(Manager *m, FILE **_f) { |
b925e726 | 1688 | char *path = NULL; |
a16e1123 LP |
1689 | mode_t saved_umask; |
1690 | int fd; | |
1691 | FILE *f; | |
1692 | ||
1693 | assert(_f); | |
1694 | ||
b925e726 | 1695 | if (m->running_as == MANAGER_SYSTEM) |
2b583ce6 | 1696 | asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); |
b925e726 LP |
1697 | else |
1698 | asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); | |
d8d5ab98 | 1699 | |
b925e726 LP |
1700 | if (!path) |
1701 | return -ENOMEM; | |
a16e1123 LP |
1702 | |
1703 | saved_umask = umask(0077); | |
1704 | fd = mkostemp(path, O_RDWR|O_CLOEXEC); | |
1705 | umask(saved_umask); | |
1706 | ||
1707 | if (fd < 0) { | |
1708 | free(path); | |
1709 | return -errno; | |
1710 | } | |
1711 | ||
1712 | unlink(path); | |
1713 | ||
1714 | log_debug("Serializing state to %s", path); | |
1715 | free(path); | |
1716 | ||
da19d5c1 | 1717 | if (!(f = fdopen(fd, "w+"))) |
a16e1123 LP |
1718 | return -errno; |
1719 | ||
1720 | *_f = f; | |
1721 | ||
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | int manager_serialize(Manager *m, FILE *f, FDSet *fds) { | |
1726 | Iterator i; | |
1727 | Unit *u; | |
1728 | const char *t; | |
1729 | int r; | |
1730 | ||
1731 | assert(m); | |
1732 | assert(f); | |
1733 | assert(fds); | |
1734 | ||
a7556052 | 1735 | m->n_reloading ++; |
38c52d46 | 1736 | |
01d67b43 LP |
1737 | fprintf(f, "current-job-id=%i\n", m->current_job_id); |
1738 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
33c5fae9 LP |
1739 | fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs); |
1740 | fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs); | |
01d67b43 | 1741 | |
e9ddabc2 | 1742 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
f38ed060 | 1743 | |
26a1efdf | 1744 | if (!in_initrd()) { |
f38ed060 HH |
1745 | dual_timestamp_serialize(f, "startup-timestamp", &m->startup_timestamp); |
1746 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); | |
1747 | } | |
47a483a1 | 1748 | |
f2382a94 LP |
1749 | fputc('\n', f); |
1750 | ||
a16e1123 | 1751 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
ac155bb8 | 1752 | if (u->id != t) |
a16e1123 LP |
1753 | continue; |
1754 | ||
1755 | if (!unit_can_serialize(u)) | |
1756 | continue; | |
1757 | ||
1758 | /* Start marker */ | |
ac155bb8 | 1759 | fputs(u->id, f); |
a16e1123 LP |
1760 | fputc('\n', f); |
1761 | ||
38c52d46 | 1762 | if ((r = unit_serialize(u, f, fds)) < 0) { |
a7556052 | 1763 | m->n_reloading --; |
a16e1123 | 1764 | return r; |
38c52d46 | 1765 | } |
a16e1123 LP |
1766 | } |
1767 | ||
a7556052 LP |
1768 | assert(m->n_reloading > 0); |
1769 | m->n_reloading --; | |
38c52d46 | 1770 | |
a16e1123 LP |
1771 | if (ferror(f)) |
1772 | return -EIO; | |
1773 | ||
b23de6af LP |
1774 | r = bus_fdset_add_all(m, fds); |
1775 | if (r < 0) | |
1776 | return r; | |
1777 | ||
a16e1123 LP |
1778 | return 0; |
1779 | } | |
1780 | ||
1781 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
1782 | int r = 0; | |
1783 | ||
1784 | assert(m); | |
1785 | assert(f); | |
1786 | ||
1787 | log_debug("Deserializing state..."); | |
1788 | ||
a7556052 | 1789 | m->n_reloading ++; |
82c64bf5 | 1790 | |
10f8e83c | 1791 | for (;;) { |
20c03b7b | 1792 | char line[LINE_MAX], *l; |
10f8e83c LP |
1793 | |
1794 | if (!fgets(line, sizeof(line), f)) { | |
1795 | if (feof(f)) | |
1796 | r = 0; | |
1797 | else | |
1798 | r = -errno; | |
1799 | ||
1800 | goto finish; | |
1801 | } | |
1802 | ||
1803 | char_array_0(line); | |
1804 | l = strstrip(line); | |
1805 | ||
1806 | if (l[0] == 0) | |
1807 | break; | |
1808 | ||
01d67b43 LP |
1809 | if (startswith(l, "current-job-id=")) { |
1810 | uint32_t id; | |
1811 | ||
1812 | if (safe_atou32(l+15, &id) < 0) | |
1813 | log_debug("Failed to parse current job id value %s", l+15); | |
1814 | else | |
1815 | m->current_job_id = MAX(m->current_job_id, id); | |
33c5fae9 LP |
1816 | } else if (startswith(l, "n-installed-jobs=")) { |
1817 | uint32_t n; | |
1818 | ||
1819 | if (safe_atou32(l+17, &n) < 0) | |
1820 | log_debug("Failed to parse installed jobs counter %s", l+17); | |
1821 | else | |
1822 | m->n_installed_jobs += n; | |
1823 | } else if (startswith(l, "n-failed-jobs=")) { | |
1824 | uint32_t n; | |
1825 | ||
1826 | if (safe_atou32(l+14, &n) < 0) | |
1827 | log_debug("Failed to parse failed jobs counter %s", l+14); | |
1828 | else | |
1829 | m->n_failed_jobs += n; | |
01d67b43 LP |
1830 | } else if (startswith(l, "taint-usr=")) { |
1831 | int b; | |
1832 | ||
1833 | if ((b = parse_boolean(l+10)) < 0) | |
1834 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
1835 | else | |
1836 | m->taint_usr = m->taint_usr || b; | |
1837 | } else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 LP |
1838 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
1839 | else if (startswith(l, "startup-timestamp=")) | |
799fd0fd | 1840 | dual_timestamp_deserialize(l+18, &m->startup_timestamp); |
10717a1a | 1841 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 1842 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
10717a1a | 1843 | else |
10f8e83c LP |
1844 | log_debug("Unknown serialization item '%s'", l); |
1845 | } | |
1846 | ||
a16e1123 LP |
1847 | for (;;) { |
1848 | Unit *u; | |
1849 | char name[UNIT_NAME_MAX+2]; | |
1850 | ||
1851 | /* Start marker */ | |
1852 | if (!fgets(name, sizeof(name), f)) { | |
1853 | if (feof(f)) | |
10f8e83c LP |
1854 | r = 0; |
1855 | else | |
1856 | r = -errno; | |
a16e1123 | 1857 | |
82c64bf5 | 1858 | goto finish; |
a16e1123 LP |
1859 | } |
1860 | ||
1861 | char_array_0(name); | |
1862 | ||
398ef8ba | 1863 | if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0) |
82c64bf5 | 1864 | goto finish; |
a16e1123 LP |
1865 | |
1866 | if ((r = unit_deserialize(u, f, fds)) < 0) | |
82c64bf5 | 1867 | goto finish; |
a16e1123 LP |
1868 | } |
1869 | ||
10f8e83c | 1870 | finish: |
82c64bf5 LP |
1871 | if (ferror(f)) { |
1872 | r = -EIO; | |
1873 | goto finish; | |
1874 | } | |
a16e1123 | 1875 | |
a7556052 LP |
1876 | assert(m->n_reloading > 0); |
1877 | m->n_reloading --; | |
82c64bf5 LP |
1878 | |
1879 | return r; | |
a16e1123 LP |
1880 | } |
1881 | ||
1882 | int manager_reload(Manager *m) { | |
1883 | int r, q; | |
1884 | FILE *f; | |
1885 | FDSet *fds; | |
1886 | ||
1887 | assert(m); | |
1888 | ||
07719a21 LP |
1889 | r = manager_open_serialization(m, &f); |
1890 | if (r < 0) | |
a16e1123 LP |
1891 | return r; |
1892 | ||
a7556052 | 1893 | m->n_reloading ++; |
38c52d46 | 1894 | |
07719a21 LP |
1895 | fds = fdset_new(); |
1896 | if (!fds) { | |
a7556052 | 1897 | m->n_reloading --; |
a16e1123 LP |
1898 | r = -ENOMEM; |
1899 | goto finish; | |
1900 | } | |
1901 | ||
07719a21 LP |
1902 | r = manager_serialize(m, f, fds); |
1903 | if (r < 0) { | |
a7556052 | 1904 | m->n_reloading --; |
a16e1123 | 1905 | goto finish; |
38c52d46 | 1906 | } |
a16e1123 LP |
1907 | |
1908 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
a7556052 | 1909 | m->n_reloading --; |
a16e1123 LP |
1910 | r = -errno; |
1911 | goto finish; | |
1912 | } | |
1913 | ||
1914 | /* From here on there is no way back. */ | |
1915 | manager_clear_jobs_and_units(m); | |
5a1e9937 | 1916 | manager_undo_generators(m); |
84e3543e | 1917 | lookup_paths_free(&m->lookup_paths); |
2ded0c04 | 1918 | |
07719a21 | 1919 | /* Find new unit paths */ |
5a1e9937 LP |
1920 | manager_run_generators(m); |
1921 | ||
07719a21 LP |
1922 | q = lookup_paths_init( |
1923 | &m->lookup_paths, m->running_as, true, | |
1924 | m->generator_unit_path, | |
1925 | m->generator_unit_path_early, | |
1926 | m->generator_unit_path_late); | |
1927 | if (q < 0) | |
1928 | r = q; | |
1929 | ||
5a1e9937 LP |
1930 | manager_build_unit_path_cache(m); |
1931 | ||
a16e1123 | 1932 | /* First, enumerate what we can from all config files */ |
07719a21 LP |
1933 | q = manager_enumerate(m); |
1934 | if (q < 0) | |
a16e1123 LP |
1935 | r = q; |
1936 | ||
1937 | /* Second, deserialize our stored data */ | |
07719a21 LP |
1938 | q = manager_deserialize(m, f, fds); |
1939 | if (q < 0) | |
a16e1123 LP |
1940 | r = q; |
1941 | ||
1942 | fclose(f); | |
1943 | f = NULL; | |
1944 | ||
1945 | /* Third, fire things up! */ | |
07719a21 LP |
1946 | q = manager_coldplug(m); |
1947 | if (q < 0) | |
a16e1123 LP |
1948 | r = q; |
1949 | ||
a7556052 LP |
1950 | assert(m->n_reloading > 0); |
1951 | m->n_reloading--; | |
9f611ad8 | 1952 | |
a16e1123 LP |
1953 | finish: |
1954 | if (f) | |
1955 | fclose(f); | |
1956 | ||
1957 | if (fds) | |
1958 | fdset_free(fds); | |
1959 | ||
1960 | return r; | |
1961 | } | |
1962 | ||
9e58ff9c LP |
1963 | bool manager_is_booting_or_shutting_down(Manager *m) { |
1964 | Unit *u; | |
1965 | ||
1966 | assert(m); | |
1967 | ||
1968 | /* Is the initial job still around? */ | |
bacbccb7 | 1969 | if (manager_get_job(m, m->default_unit_job_id)) |
9e58ff9c LP |
1970 | return true; |
1971 | ||
1972 | /* Is there a job for the shutdown target? */ | |
27d340c7 LP |
1973 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
1974 | if (u) | |
ac155bb8 | 1975 | return !!u->job; |
9e58ff9c LP |
1976 | |
1977 | return false; | |
1978 | } | |
1979 | ||
fdf20a31 | 1980 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
1981 | Unit *u; |
1982 | Iterator i; | |
1983 | ||
1984 | assert(m); | |
1985 | ||
1986 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 1987 | unit_reset_failed(u); |
5632e374 LP |
1988 | } |
1989 | ||
8f6df3fa LP |
1990 | bool manager_unit_pending_inactive(Manager *m, const char *name) { |
1991 | Unit *u; | |
1992 | ||
1993 | assert(m); | |
1994 | assert(name); | |
1995 | ||
1996 | /* Returns true if the unit is inactive or going down */ | |
8f6df3fa LP |
1997 | if (!(u = manager_get_unit(m, name))) |
1998 | return true; | |
1999 | ||
18ffdfda | 2000 | return unit_pending_inactive(u); |
8f6df3fa LP |
2001 | } |
2002 | ||
b0c918b9 | 2003 | void manager_check_finished(Manager *m) { |
e9ddabc2 | 2004 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
7ea07dcd | 2005 | usec_t kernel_usec, initrd_usec, userspace_usec, total_usec; |
b0c918b9 LP |
2006 | |
2007 | assert(m); | |
2008 | ||
f2b68789 | 2009 | if (hashmap_size(m->jobs) > 0) |
b0c918b9 LP |
2010 | return; |
2011 | ||
f2b68789 LP |
2012 | /* Notify Type=idle units that we are done now */ |
2013 | close_pipe(m->idle_pipe); | |
2014 | ||
af6da548 LP |
2015 | /* Turn off confirm spawn now */ |
2016 | m->confirm_spawn = false; | |
2017 | ||
f2b68789 | 2018 | if (dual_timestamp_is_set(&m->finish_timestamp)) |
b0c918b9 LP |
2019 | return; |
2020 | ||
2021 | dual_timestamp_get(&m->finish_timestamp); | |
2022 | ||
e03ae661 LP |
2023 | if (m->running_as == MANAGER_SYSTEM && detect_container(NULL) <= 0) { |
2024 | ||
18fa6b27 LP |
2025 | userspace_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic; |
2026 | total_usec = m->finish_timestamp.monotonic; | |
2027 | ||
e9ddabc2 | 2028 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 LP |
2029 | |
2030 | kernel_usec = m->initrd_timestamp.monotonic; | |
2031 | initrd_usec = m->startup_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
2032 | ||
e9ddabc2 | 2033 | log_info("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
18fa6b27 LP |
2034 | format_timespan(kernel, sizeof(kernel), kernel_usec), |
2035 | format_timespan(initrd, sizeof(initrd), initrd_usec), | |
2036 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2037 | format_timespan(sum, sizeof(sum), total_usec)); | |
2038 | } else { | |
2039 | kernel_usec = m->startup_timestamp.monotonic; | |
2040 | initrd_usec = 0; | |
2041 | ||
e9ddabc2 | 2042 | log_info("Startup finished in %s (kernel) + %s (userspace) = %s.", |
18fa6b27 LP |
2043 | format_timespan(kernel, sizeof(kernel), kernel_usec), |
2044 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2045 | format_timespan(sum, sizeof(sum), total_usec)); | |
2046 | } | |
2047 | } else { | |
2048 | userspace_usec = initrd_usec = kernel_usec = 0; | |
2049 | total_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic; | |
2050 | ||
b0c918b9 | 2051 | log_debug("Startup finished in %s.", |
18fa6b27 LP |
2052 | format_timespan(sum, sizeof(sum), total_usec)); |
2053 | } | |
b0c918b9 | 2054 | |
18fa6b27 | 2055 | bus_broadcast_finished(m, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2056 | |
2057 | sd_notifyf(false, | |
2058 | "READY=1\nSTATUS=Startup finished in %s.", | |
2059 | format_timespan(sum, sizeof(sum), total_usec)); | |
b0c918b9 LP |
2060 | } |
2061 | ||
07719a21 LP |
2062 | static int create_generator_dir(Manager *m, char **generator, const char *name) { |
2063 | char *p; | |
2064 | int r; | |
2065 | ||
2066 | assert(m); | |
2067 | assert(generator); | |
2068 | assert(name); | |
2069 | ||
2070 | if (*generator) | |
2071 | return 0; | |
2072 | ||
2073 | if (m->running_as == MANAGER_SYSTEM && getpid() == 1) { | |
2074 | ||
2075 | p = strappend("/run/systemd/", name); | |
2076 | if (!p) { | |
2077 | log_error("Out of memory"); | |
2078 | return -ENOMEM; | |
2079 | } | |
2080 | ||
d2e54fae | 2081 | r = mkdir_p_label(p, 0755); |
07719a21 LP |
2082 | if (r < 0) { |
2083 | log_error("Failed to create generator directory: %s", strerror(-r)); | |
2084 | free(p); | |
2085 | return r; | |
2086 | } | |
2087 | } else { | |
2088 | p = join("/tmp/systemd-", name, ".XXXXXX", NULL); | |
2089 | if (!p) { | |
2090 | log_error("Out of memory"); | |
2091 | return -ENOMEM; | |
2092 | } | |
2093 | ||
2094 | if (!mkdtemp(p)) { | |
2095 | free(p); | |
2096 | log_error("Failed to create generator directory: %m"); | |
2097 | return -errno; | |
2098 | } | |
2099 | } | |
2100 | ||
2101 | *generator = p; | |
2102 | return 0; | |
2103 | } | |
2104 | ||
2105 | static void trim_generator_dir(Manager *m, char **generator) { | |
2106 | assert(m); | |
2107 | assert(generator); | |
2108 | ||
2109 | if (!*generator) | |
2110 | return; | |
2111 | ||
2112 | if (rmdir(*generator) >= 0) { | |
2113 | free(*generator); | |
2114 | *generator = NULL; | |
2115 | } | |
2116 | ||
2117 | return; | |
2118 | } | |
2119 | ||
5a1e9937 LP |
2120 | void manager_run_generators(Manager *m) { |
2121 | DIR *d = NULL; | |
5a1e9937 | 2122 | const char *generator_path; |
07719a21 | 2123 | const char *argv[5]; |
07f8a4aa | 2124 | mode_t u; |
07719a21 | 2125 | int r; |
5a1e9937 LP |
2126 | |
2127 | assert(m); | |
2128 | ||
af2d49f7 | 2129 | generator_path = m->running_as == MANAGER_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH; |
07719a21 LP |
2130 | d = opendir(generator_path); |
2131 | if (!d) { | |
5a1e9937 LP |
2132 | if (errno == ENOENT) |
2133 | return; | |
2134 | ||
2135 | log_error("Failed to enumerate generator directory: %m"); | |
2136 | return; | |
2137 | } | |
2138 | ||
07719a21 LP |
2139 | r = create_generator_dir(m, &m->generator_unit_path, "generator"); |
2140 | if (r < 0) | |
2141 | goto finish; | |
f1d19aa4 | 2142 | |
07719a21 LP |
2143 | r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early"); |
2144 | if (r < 0) | |
2145 | goto finish; | |
5a1e9937 | 2146 | |
07719a21 LP |
2147 | r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late"); |
2148 | if (r < 0) | |
2149 | goto finish; | |
5a1e9937 | 2150 | |
83cc030f LP |
2151 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
2152 | argv[1] = m->generator_unit_path; | |
07719a21 LP |
2153 | argv[2] = m->generator_unit_path_early; |
2154 | argv[3] = m->generator_unit_path_late; | |
2155 | argv[4] = NULL; | |
5a1e9937 | 2156 | |
07f8a4aa | 2157 | u = umask(0022); |
83cc030f | 2158 | execute_directory(generator_path, d, (char**) argv); |
07f8a4aa | 2159 | umask(u); |
5a1e9937 | 2160 | |
07719a21 LP |
2161 | trim_generator_dir(m, &m->generator_unit_path); |
2162 | trim_generator_dir(m, &m->generator_unit_path_early); | |
2163 | trim_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2164 | |
2165 | finish: | |
2166 | if (d) | |
2167 | closedir(d); | |
5a1e9937 LP |
2168 | } |
2169 | ||
07719a21 | 2170 | static void remove_generator_dir(Manager *m, char **generator) { |
5a1e9937 | 2171 | assert(m); |
07719a21 | 2172 | assert(generator); |
5a1e9937 | 2173 | |
07719a21 | 2174 | if (!*generator) |
5a1e9937 LP |
2175 | return; |
2176 | ||
07719a21 LP |
2177 | strv_remove(m->lookup_paths.unit_path, *generator); |
2178 | rm_rf(*generator, false, true, false); | |
5a1e9937 | 2179 | |
07719a21 LP |
2180 | free(*generator); |
2181 | *generator = NULL; | |
2182 | } | |
2183 | ||
2184 | void manager_undo_generators(Manager *m) { | |
2185 | assert(m); | |
2186 | ||
2187 | remove_generator_dir(m, &m->generator_unit_path); | |
2188 | remove_generator_dir(m, &m->generator_unit_path_early); | |
2189 | remove_generator_dir(m, &m->generator_unit_path_late); | |
5a1e9937 LP |
2190 | } |
2191 | ||
06d4c99a LP |
2192 | int manager_set_default_controllers(Manager *m, char **controllers) { |
2193 | char **l; | |
2194 | ||
2195 | assert(m); | |
2196 | ||
9156e799 LP |
2197 | l = strv_copy(controllers); |
2198 | if (!l) | |
06d4c99a LP |
2199 | return -ENOMEM; |
2200 | ||
2201 | strv_free(m->default_controllers); | |
2202 | m->default_controllers = l; | |
2203 | ||
b59e2465 | 2204 | cg_shorten_controllers(m->default_controllers); |
9156e799 | 2205 | |
06d4c99a LP |
2206 | return 0; |
2207 | } | |
2208 | ||
c93ff2e9 FC |
2209 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { |
2210 | int i; | |
2211 | ||
2212 | assert(m); | |
2213 | ||
2214 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
07719a21 LP |
2215 | if (!default_rlimit[i]) |
2216 | continue; | |
c93ff2e9 | 2217 | |
07719a21 LP |
2218 | m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); |
2219 | if (!m->rlimit[i]) | |
2220 | return -ENOMEM; | |
c93ff2e9 FC |
2221 | } |
2222 | ||
2223 | return 0; | |
2224 | } | |
2225 | ||
4cfa2c99 | 2226 | void manager_recheck_journal(Manager *m) { |
f1dd0c3f LP |
2227 | Unit *u; |
2228 | ||
2229 | assert(m); | |
2230 | ||
2231 | if (m->running_as != MANAGER_SYSTEM) | |
2232 | return; | |
2233 | ||
731a676c LP |
2234 | u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET); |
2235 | if (u && SOCKET(u)->state != SOCKET_RUNNING) { | |
4cfa2c99 | 2236 | log_close_journal(); |
731a676c | 2237 | return; |
f1dd0c3f LP |
2238 | } |
2239 | ||
731a676c LP |
2240 | u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE); |
2241 | if (u && SERVICE(u)->state != SERVICE_RUNNING) { | |
4cfa2c99 | 2242 | log_close_journal(); |
731a676c LP |
2243 | return; |
2244 | } | |
f1dd0c3f | 2245 | |
731a676c LP |
2246 | /* Hmm, OK, so the socket is fully up and the service is up |
2247 | * too, then let's make use of the thing. */ | |
f1dd0c3f LP |
2248 | log_open(); |
2249 | } | |
2250 | ||
27d340c7 LP |
2251 | void manager_set_show_status(Manager *m, bool b) { |
2252 | assert(m); | |
2253 | ||
2254 | if (m->running_as != MANAGER_SYSTEM) | |
2255 | return; | |
2256 | ||
2257 | m->show_status = b; | |
2258 | ||
2259 | if (b) | |
2260 | touch("/run/systemd/show-status"); | |
2261 | else | |
2262 | unlink("/run/systemd/show-status"); | |
2263 | } | |
2264 | ||
2265 | bool manager_get_show_status(Manager *m) { | |
2266 | assert(m); | |
2267 | ||
2268 | if (m->running_as != MANAGER_SYSTEM) | |
2269 | return false; | |
2270 | ||
2271 | if (m->show_status) | |
2272 | return true; | |
2273 | ||
2274 | /* If Plymouth is running make sure we show the status, so | |
2275 | * that there's something nice to see when people press Esc */ | |
2276 | ||
2277 | return plymouth_running(); | |
2278 | } | |
2279 | ||
dfcd764e | 2280 | static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = { |
dfcd764e | 2281 | [MANAGER_SYSTEM] = "system", |
af2d49f7 | 2282 | [MANAGER_USER] = "user" |
dfcd764e LP |
2283 | }; |
2284 | ||
2285 | DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs); |