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Commit | Line | Data |
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5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
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 | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
83c60c9f LP |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> | |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
26 | #include <fcntl.h> | |
f94ea366 | 27 | #include <sys/epoll.h> |
034c6ed7 | 28 | #include <signal.h> |
4f2d528d | 29 | #include <arpa/inet.h> |
83c60c9f | 30 | |
87f0e418 | 31 | #include "unit.h" |
5cb5a6ff | 32 | #include "socket.h" |
83c60c9f | 33 | #include "log.h" |
23a177ef LP |
34 | #include "load-dropin.h" |
35 | #include "load-fragment.h" | |
9e2f7c11 | 36 | #include "strv.h" |
4f2d528d | 37 | #include "unit-name.h" |
4139c1b2 | 38 | #include "dbus-socket.h" |
83c60c9f | 39 | |
acbb0225 | 40 | static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { |
87f0e418 LP |
41 | [SOCKET_DEAD] = UNIT_INACTIVE, |
42 | [SOCKET_START_PRE] = UNIT_ACTIVATING, | |
43 | [SOCKET_START_POST] = UNIT_ACTIVATING, | |
44 | [SOCKET_LISTENING] = UNIT_ACTIVE, | |
45 | [SOCKET_RUNNING] = UNIT_ACTIVE, | |
46 | [SOCKET_STOP_PRE] = UNIT_DEACTIVATING, | |
47 | [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING, | |
48 | [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING, | |
49 | [SOCKET_STOP_POST] = UNIT_DEACTIVATING, | |
80876c20 LP |
50 | [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
51 | [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
87f0e418 | 52 | [SOCKET_MAINTAINANCE] = UNIT_INACTIVE, |
83c60c9f | 53 | }; |
5cb5a6ff | 54 | |
a16e1123 LP |
55 | static void socket_init(Unit *u) { |
56 | Socket *s = SOCKET(u); | |
57 | ||
58 | assert(u); | |
59 | assert(u->meta.load_state == UNIT_STUB); | |
60 | ||
61 | s->timer_watch.type = WATCH_INVALID; | |
62 | s->backlog = SOMAXCONN; | |
63 | s->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
64 | s->directory_mode = 0755; | |
65 | s->socket_mode = 0666; | |
66 | ||
67 | exec_context_init(&s->exec_context); | |
68 | ||
69 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
70 | } | |
acbb0225 | 71 | |
5e94833f LP |
72 | static void socket_unwatch_control_pid(Socket *s) { |
73 | assert(s); | |
74 | ||
75 | if (s->control_pid <= 0) | |
76 | return; | |
77 | ||
78 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
79 | s->control_pid = 0; | |
80 | } | |
81 | ||
87f0e418 LP |
82 | static void socket_done(Unit *u) { |
83 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
84 | SocketPort *p; |
85 | ||
86 | assert(s); | |
87 | ||
88 | while ((p = s->ports)) { | |
89 | LIST_REMOVE(SocketPort, port, s->ports, p); | |
90 | ||
a16e1123 LP |
91 | if (p->fd >= 0) { |
92 | unit_unwatch_fd(UNIT(s), &p->fd_watch); | |
93 | close_nointr_nofail(p->fd); | |
94 | } | |
95 | ||
034c6ed7 LP |
96 | free(p->path); |
97 | free(p); | |
98 | } | |
99 | ||
100 | exec_context_done(&s->exec_context); | |
e537352b | 101 | exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX); |
034c6ed7 LP |
102 | s->control_command = NULL; |
103 | ||
5e94833f | 104 | socket_unwatch_control_pid(s); |
034c6ed7 LP |
105 | |
106 | s->service = NULL; | |
107 | ||
acbb0225 | 108 | free(s->bind_to_device); |
e537352b | 109 | s->bind_to_device = NULL; |
acbb0225 LP |
110 | |
111 | unit_unwatch_timer(u, &s->timer_watch); | |
5cb5a6ff LP |
112 | } |
113 | ||
4f2d528d LP |
114 | static bool have_non_accept_socket(Socket *s) { |
115 | SocketPort *p; | |
116 | ||
117 | assert(s); | |
118 | ||
119 | if (!s->accept) | |
120 | return true; | |
121 | ||
122 | LIST_FOREACH(port, p, s->ports) | |
123 | if (!socket_address_can_accept(&p->address)) | |
124 | return true; | |
125 | ||
126 | return false; | |
127 | } | |
128 | ||
129 | static int socket_verify(Socket *s) { | |
130 | assert(s); | |
131 | ||
132 | if (UNIT(s)->meta.load_state != UNIT_LOADED) | |
133 | return 0; | |
134 | ||
135 | if (!s->ports) { | |
136 | log_error("%s lacks Listen setting. Refusing.", UNIT(s)->meta.id); | |
137 | return -EINVAL; | |
138 | } | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
e537352b LP |
143 | static int socket_load(Unit *u) { |
144 | Socket *s = SOCKET(u); | |
145 | int r; | |
44d8db9e | 146 | |
e537352b LP |
147 | assert(u); |
148 | assert(u->meta.load_state == UNIT_STUB); | |
44d8db9e | 149 | |
e537352b | 150 | if ((r = unit_load_fragment_and_dropin(u)) < 0) |
23a177ef | 151 | return r; |
44d8db9e | 152 | |
23a177ef | 153 | /* This is a new unit? Then let's add in some extras */ |
e537352b | 154 | if (u->meta.load_state == UNIT_LOADED) { |
44d8db9e | 155 | |
4f2d528d LP |
156 | if (have_non_accept_socket(s)) { |
157 | if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service))) | |
158 | return r; | |
23a177ef | 159 | |
4f2d528d LP |
160 | if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service))) < 0) |
161 | return r; | |
162 | } | |
44d8db9e | 163 | |
23a177ef LP |
164 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) |
165 | return r; | |
166 | ||
167 | if ((r = unit_add_default_cgroup(u)) < 0) | |
168 | return r; | |
169 | } | |
170 | ||
4f2d528d | 171 | return socket_verify(s); |
44d8db9e LP |
172 | } |
173 | ||
542563ba LP |
174 | static const char* listen_lookup(int type) { |
175 | ||
176 | if (type == SOCK_STREAM) | |
177 | return "ListenStream"; | |
178 | else if (type == SOCK_DGRAM) | |
179 | return "ListenDatagram"; | |
180 | else if (type == SOCK_SEQPACKET) | |
181 | return "ListenSequentialPacket"; | |
182 | ||
034c6ed7 | 183 | assert_not_reached("Unknown socket type"); |
542563ba LP |
184 | return NULL; |
185 | } | |
186 | ||
87f0e418 | 187 | static void socket_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 188 | |
5cb5a6ff | 189 | SocketExecCommand c; |
87f0e418 | 190 | Socket *s = SOCKET(u); |
542563ba | 191 | SocketPort *p; |
82ba9f08 LP |
192 | const char *prefix2; |
193 | char *p2; | |
5cb5a6ff LP |
194 | |
195 | assert(s); | |
fa068367 | 196 | assert(f); |
5cb5a6ff | 197 | |
82ba9f08 LP |
198 | p2 = strappend(prefix, "\t"); |
199 | prefix2 = p2 ? p2 : prefix; | |
c43d20a0 | 200 | |
5cb5a6ff LP |
201 | fprintf(f, |
202 | "%sSocket State: %s\n" | |
542563ba | 203 | "%sBindIPv6Only: %s\n" |
b5a0699f | 204 | "%sBacklog: %u\n" |
50159e6a | 205 | "%sKillMode: %s\n" |
b5a0699f LP |
206 | "%sSocketMode: %04o\n" |
207 | "%sDirectoryMode: %04o\n", | |
a16e1123 | 208 | prefix, socket_state_to_string(s->state), |
542563ba | 209 | prefix, yes_no(s->bind_ipv6_only), |
b5a0699f | 210 | prefix, s->backlog, |
50159e6a | 211 | prefix, kill_mode_to_string(s->kill_mode), |
b5a0699f LP |
212 | prefix, s->socket_mode, |
213 | prefix, s->directory_mode); | |
542563ba | 214 | |
70123e68 LP |
215 | if (s->control_pid > 0) |
216 | fprintf(f, | |
217 | "%sControl PID: %llu\n", | |
218 | prefix, (unsigned long long) s->control_pid); | |
219 | ||
acbb0225 LP |
220 | if (s->bind_to_device) |
221 | fprintf(f, | |
222 | "%sBindToDevice: %s\n", | |
223 | prefix, s->bind_to_device); | |
224 | ||
4f2d528d LP |
225 | if (s->accept) |
226 | fprintf(f, | |
227 | "%sAccepted: %u\n", | |
228 | prefix, s->n_accepted); | |
229 | ||
034c6ed7 | 230 | LIST_FOREACH(port, p, s->ports) { |
5cb5a6ff | 231 | |
542563ba LP |
232 | if (p->type == SOCKET_SOCKET) { |
233 | const char *t; | |
234 | int r; | |
235 | char *k; | |
236 | ||
237 | if ((r = socket_address_print(&p->address, &k)) < 0) | |
238 | t = strerror(-r); | |
239 | else | |
240 | t = k; | |
241 | ||
242 | fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), k); | |
243 | free(k); | |
244 | } else | |
245 | fprintf(f, "%sListenFIFO: %s\n", prefix, p->path); | |
246 | } | |
5cb5a6ff LP |
247 | |
248 | exec_context_dump(&s->exec_context, f, prefix); | |
249 | ||
e537352b | 250 | for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) { |
c43d20a0 LP |
251 | if (!s->exec_command[c]) |
252 | continue; | |
5cb5a6ff | 253 | |
c43d20a0 | 254 | fprintf(f, "%s→ %s:\n", |
a16e1123 | 255 | prefix, socket_exec_command_to_string(c)); |
c43d20a0 LP |
256 | |
257 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 258 | } |
c43d20a0 | 259 | |
82ba9f08 | 260 | free(p2); |
5cb5a6ff LP |
261 | } |
262 | ||
4f2d528d LP |
263 | static int instance_from_socket(int fd, unsigned nr, char **instance) { |
264 | socklen_t l; | |
265 | char *r; | |
266 | union { | |
267 | struct sockaddr sa; | |
268 | struct sockaddr_un un; | |
269 | struct sockaddr_in in; | |
270 | struct sockaddr_in6 in6; | |
271 | struct sockaddr_storage storage; | |
272 | } local, remote; | |
273 | ||
274 | assert(fd >= 0); | |
275 | assert(instance); | |
276 | ||
277 | l = sizeof(local); | |
278 | if (getsockname(fd, &local.sa, &l) < 0) | |
279 | return -errno; | |
280 | ||
281 | l = sizeof(remote); | |
282 | if (getpeername(fd, &remote.sa, &l) < 0) | |
283 | return -errno; | |
284 | ||
285 | switch (local.sa.sa_family) { | |
286 | ||
287 | case AF_INET: { | |
288 | uint32_t | |
289 | a = ntohl(local.in.sin_addr.s_addr), | |
290 | b = ntohl(remote.in.sin_addr.s_addr); | |
291 | ||
292 | if (asprintf(&r, | |
a16e1123 | 293 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
4f2d528d LP |
294 | nr, |
295 | a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF, | |
296 | ntohs(local.in.sin_port), | |
297 | b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF, | |
298 | ntohs(remote.in.sin_port)) < 0) | |
299 | return -ENOMEM; | |
300 | ||
301 | break; | |
302 | } | |
303 | ||
304 | case AF_INET6: { | |
305 | char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN]; | |
306 | ||
307 | if (asprintf(&r, | |
a16e1123 | 308 | "%u-%s:%u-%s:%u", |
4f2d528d LP |
309 | nr, |
310 | inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)), | |
311 | ntohs(local.in6.sin6_port), | |
312 | inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)), | |
313 | ntohs(remote.in6.sin6_port)) < 0) | |
314 | return -ENOMEM; | |
315 | ||
316 | break; | |
317 | } | |
318 | ||
319 | case AF_UNIX: { | |
320 | struct ucred ucred; | |
321 | ||
322 | l = sizeof(ucred); | |
323 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) | |
324 | return -errno; | |
325 | ||
326 | if (asprintf(&r, | |
327 | "%u-%llu-%llu", | |
328 | nr, | |
329 | (unsigned long long) ucred.pid, | |
330 | (unsigned long long) ucred.uid) < 0) | |
331 | return -ENOMEM; | |
332 | ||
333 | break; | |
334 | } | |
335 | ||
336 | default: | |
337 | assert_not_reached("Unhandled socket type."); | |
338 | } | |
339 | ||
340 | *instance = r; | |
341 | return 0; | |
342 | } | |
343 | ||
034c6ed7 | 344 | static void socket_close_fds(Socket *s) { |
83c60c9f LP |
345 | SocketPort *p; |
346 | ||
347 | assert(s); | |
348 | ||
034c6ed7 | 349 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f LP |
350 | if (p->fd < 0) |
351 | continue; | |
352 | ||
acbb0225 | 353 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
a16e1123 LP |
354 | close_nointr_nofail(p->fd); |
355 | ||
356 | /* One little note: we should never delete any sockets | |
357 | * in the file system here! After all some other | |
358 | * process we spawned might still have a reference of | |
359 | * this fd and wants to continue to use it. Therefore | |
360 | * we delete sockets in the file system before we | |
361 | * create a new one, not after we stopped using | |
362 | * one! */ | |
9152c765 | 363 | |
83c60c9f LP |
364 | p->fd = -1; |
365 | } | |
366 | } | |
367 | ||
034c6ed7 | 368 | static int socket_open_fds(Socket *s) { |
83c60c9f LP |
369 | SocketPort *p; |
370 | int r; | |
371 | ||
372 | assert(s); | |
373 | ||
034c6ed7 | 374 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f | 375 | |
034c6ed7 LP |
376 | if (p->fd >= 0) |
377 | continue; | |
83c60c9f LP |
378 | |
379 | if (p->type == SOCKET_SOCKET) { | |
380 | ||
b5a0699f LP |
381 | if ((r = socket_address_listen( |
382 | &p->address, | |
383 | s->backlog, | |
384 | s->bind_ipv6_only, | |
385 | s->bind_to_device, | |
386 | s->directory_mode, | |
387 | s->socket_mode, | |
388 | &p->fd)) < 0) | |
83c60c9f LP |
389 | goto rollback; |
390 | ||
391 | } else { | |
392 | struct stat st; | |
393 | assert(p->type == SOCKET_FIFO); | |
394 | ||
8cb45bf8 LP |
395 | mkdir_parents(p->path, s->directory_mode); |
396 | ||
397 | if (mkfifo(p->path, s->socket_mode) < 0 && errno != EEXIST) { | |
83c60c9f LP |
398 | r = -errno; |
399 | goto rollback; | |
400 | } | |
401 | ||
402 | if ((p->fd = open(p->path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) { | |
403 | r = -errno; | |
404 | goto rollback; | |
405 | } | |
406 | ||
407 | if (fstat(p->fd, &st) < 0) { | |
408 | r = -errno; | |
409 | goto rollback; | |
410 | } | |
411 | ||
412 | /* FIXME verify user, access mode */ | |
413 | ||
414 | if (!S_ISFIFO(st.st_mode)) { | |
415 | r = -EEXIST; | |
416 | goto rollback; | |
417 | } | |
418 | } | |
034c6ed7 LP |
419 | } |
420 | ||
421 | return 0; | |
422 | ||
423 | rollback: | |
424 | socket_close_fds(s); | |
425 | return r; | |
426 | } | |
427 | ||
428 | static void socket_unwatch_fds(Socket *s) { | |
429 | SocketPort *p; | |
9152c765 | 430 | |
034c6ed7 LP |
431 | assert(s); |
432 | ||
433 | LIST_FOREACH(port, p, s->ports) { | |
434 | if (p->fd < 0) | |
435 | continue; | |
436 | ||
acbb0225 | 437 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
83c60c9f | 438 | } |
034c6ed7 LP |
439 | } |
440 | ||
441 | static int socket_watch_fds(Socket *s) { | |
442 | SocketPort *p; | |
443 | int r; | |
444 | ||
445 | assert(s); | |
83c60c9f | 446 | |
034c6ed7 LP |
447 | LIST_FOREACH(port, p, s->ports) { |
448 | if (p->fd < 0) | |
449 | continue; | |
450 | ||
4f2d528d LP |
451 | p->fd_watch.data.socket_accept = |
452 | s->accept && | |
453 | socket_address_can_accept(&p->address); | |
454 | ||
f94ea366 | 455 | if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0) |
034c6ed7 LP |
456 | goto fail; |
457 | } | |
83c60c9f | 458 | |
542563ba | 459 | return 0; |
83c60c9f | 460 | |
034c6ed7 LP |
461 | fail: |
462 | socket_unwatch_fds(s); | |
463 | return r; | |
464 | } | |
465 | ||
466 | static void socket_set_state(Socket *s, SocketState state) { | |
467 | SocketState old_state; | |
468 | assert(s); | |
469 | ||
470 | old_state = s->state; | |
471 | s->state = state; | |
472 | ||
473 | if (state != SOCKET_START_PRE && | |
474 | state != SOCKET_START_POST && | |
475 | state != SOCKET_STOP_PRE && | |
476 | state != SOCKET_STOP_PRE_SIGTERM && | |
477 | state != SOCKET_STOP_PRE_SIGKILL && | |
478 | state != SOCKET_STOP_POST && | |
80876c20 LP |
479 | state != SOCKET_FINAL_SIGTERM && |
480 | state != SOCKET_FINAL_SIGKILL) { | |
acbb0225 | 481 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
5e94833f | 482 | socket_unwatch_control_pid(s); |
034c6ed7 | 483 | s->control_command = NULL; |
a16e1123 | 484 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
e537352b | 485 | } |
034c6ed7 | 486 | |
a16e1123 LP |
487 | if (state != SOCKET_LISTENING) |
488 | socket_unwatch_fds(s); | |
489 | ||
034c6ed7 LP |
490 | if (state != SOCKET_START_POST && |
491 | state != SOCKET_LISTENING && | |
492 | state != SOCKET_RUNNING && | |
493 | state != SOCKET_STOP_PRE && | |
494 | state != SOCKET_STOP_PRE_SIGTERM && | |
495 | state != SOCKET_STOP_PRE_SIGKILL) | |
496 | socket_close_fds(s); | |
497 | ||
e537352b | 498 | if (state != old_state) |
a16e1123 LP |
499 | log_debug("%s changed %s → %s", |
500 | s->meta.id, | |
501 | socket_state_to_string(old_state), | |
502 | socket_state_to_string(state)); | |
acbb0225 LP |
503 | |
504 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); | |
034c6ed7 LP |
505 | } |
506 | ||
a16e1123 LP |
507 | static int socket_coldplug(Unit *u) { |
508 | Socket *s = SOCKET(u); | |
509 | int r; | |
510 | ||
511 | assert(s); | |
512 | assert(s->state == SOCKET_DEAD); | |
513 | ||
514 | if (s->deserialized_state != s->state) { | |
515 | ||
516 | if (s->deserialized_state == SOCKET_START_PRE || | |
517 | s->deserialized_state == SOCKET_START_POST || | |
518 | s->deserialized_state == SOCKET_STOP_PRE || | |
519 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
520 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL || | |
521 | s->deserialized_state == SOCKET_STOP_POST || | |
522 | s->deserialized_state == SOCKET_FINAL_SIGTERM || | |
523 | s->deserialized_state == SOCKET_FINAL_SIGKILL) { | |
524 | ||
525 | if (s->control_pid <= 0) | |
526 | return -EBADMSG; | |
527 | ||
528 | if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) | |
529 | return r; | |
530 | ||
531 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
532 | return r; | |
533 | } | |
534 | ||
535 | if (s->deserialized_state == SOCKET_START_POST || | |
536 | s->deserialized_state == SOCKET_LISTENING || | |
537 | s->deserialized_state == SOCKET_RUNNING || | |
538 | s->deserialized_state == SOCKET_STOP_PRE || | |
539 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
540 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) | |
541 | if ((r = socket_open_fds(s)) < 0) | |
542 | return r; | |
543 | ||
544 | if (s->deserialized_state == SOCKET_LISTENING) | |
545 | if ((r = socket_watch_fds(s)) < 0) | |
546 | return r; | |
547 | ||
548 | socket_set_state(s, s->deserialized_state); | |
549 | } | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
e537352b | 554 | static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { |
034c6ed7 LP |
555 | pid_t pid; |
556 | int r; | |
9e2f7c11 | 557 | char **argv; |
034c6ed7 LP |
558 | |
559 | assert(s); | |
560 | assert(c); | |
561 | assert(_pid); | |
562 | ||
e537352b LP |
563 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
564 | goto fail; | |
034c6ed7 | 565 | |
9e2f7c11 LP |
566 | if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { |
567 | r = -ENOMEM; | |
568 | goto fail; | |
569 | } | |
570 | ||
571 | r = exec_spawn(c, | |
572 | argv, | |
573 | &s->exec_context, | |
574 | NULL, 0, | |
575 | true, | |
576 | true, | |
577 | UNIT(s)->meta.manager->confirm_spawn, | |
578 | UNIT(s)->meta.cgroup_bondings, | |
579 | &pid); | |
580 | ||
581 | strv_free(argv); | |
582 | if (r < 0) | |
034c6ed7 LP |
583 | goto fail; |
584 | ||
87f0e418 | 585 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) |
034c6ed7 LP |
586 | /* FIXME: we need to do something here */ |
587 | goto fail; | |
83c60c9f | 588 | |
034c6ed7 LP |
589 | *_pid = pid; |
590 | ||
591 | return 0; | |
592 | ||
593 | fail: | |
e537352b | 594 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
83c60c9f LP |
595 | |
596 | return r; | |
542563ba LP |
597 | } |
598 | ||
034c6ed7 LP |
599 | static void socket_enter_dead(Socket *s, bool success) { |
600 | assert(s); | |
601 | ||
602 | if (!success) | |
603 | s->failure = true; | |
604 | ||
605 | socket_set_state(s, s->failure ? SOCKET_MAINTAINANCE : SOCKET_DEAD); | |
606 | } | |
607 | ||
80876c20 LP |
608 | static void socket_enter_signal(Socket *s, SocketState state, bool success); |
609 | ||
034c6ed7 LP |
610 | static void socket_enter_stop_post(Socket *s, bool success) { |
611 | int r; | |
612 | assert(s); | |
613 | ||
614 | if (!success) | |
615 | s->failure = true; | |
616 | ||
5e94833f LP |
617 | socket_unwatch_control_pid(s); |
618 | ||
a16e1123 LP |
619 | s->control_command_id = SOCKET_EXEC_STOP_POST; |
620 | ||
80876c20 | 621 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) { |
e537352b | 622 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
623 | goto fail; |
624 | ||
80876c20 LP |
625 | socket_set_state(s, SOCKET_STOP_POST); |
626 | } else | |
627 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true); | |
034c6ed7 LP |
628 | |
629 | return; | |
630 | ||
631 | fail: | |
9e2f7c11 | 632 | log_warning("%s failed to run stop-post executable: %s", s->meta.id, strerror(-r)); |
80876c20 | 633 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
634 | } |
635 | ||
636 | static void socket_enter_signal(Socket *s, SocketState state, bool success) { | |
637 | int r; | |
80876c20 | 638 | bool sent = false; |
034c6ed7 LP |
639 | |
640 | assert(s); | |
641 | ||
642 | if (!success) | |
643 | s->failure = true; | |
644 | ||
80876c20 LP |
645 | if (s->kill_mode != KILL_NONE) { |
646 | int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? SIGTERM : SIGKILL; | |
034c6ed7 | 647 | |
50159e6a LP |
648 | if (s->kill_mode == KILL_CONTROL_GROUP) { |
649 | ||
650 | if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) { | |
651 | if (r != -EAGAIN && r != -ESRCH) | |
652 | goto fail; | |
653 | } else | |
654 | sent = true; | |
034c6ed7 | 655 | } |
50159e6a | 656 | |
80876c20 | 657 | if (!sent && s->control_pid > 0) |
50159e6a LP |
658 | if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) { |
659 | r = -errno; | |
660 | goto fail; | |
661 | } | |
d6ea93e3 | 662 | } |
034c6ed7 | 663 | |
80876c20 LP |
664 | if (sent) { |
665 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
666 | goto fail; | |
d6ea93e3 | 667 | |
80876c20 LP |
668 | socket_set_state(s, state); |
669 | } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
670 | socket_enter_stop_post(s, true); | |
671 | else | |
034c6ed7 LP |
672 | socket_enter_dead(s, true); |
673 | ||
674 | return; | |
675 | ||
676 | fail: | |
9e2f7c11 | 677 | log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
678 | |
679 | if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
680 | socket_enter_stop_post(s, false); | |
681 | else | |
682 | socket_enter_dead(s, false); | |
683 | } | |
684 | ||
685 | static void socket_enter_stop_pre(Socket *s, bool success) { | |
686 | int r; | |
687 | assert(s); | |
688 | ||
689 | if (!success) | |
690 | s->failure = true; | |
691 | ||
5e94833f LP |
692 | socket_unwatch_control_pid(s); |
693 | ||
a16e1123 LP |
694 | s->control_command_id = SOCKET_EXEC_STOP_PRE; |
695 | ||
80876c20 | 696 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) { |
e537352b | 697 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
698 | goto fail; |
699 | ||
80876c20 LP |
700 | socket_set_state(s, SOCKET_STOP_PRE); |
701 | } else | |
034c6ed7 LP |
702 | socket_enter_stop_post(s, true); |
703 | ||
704 | return; | |
705 | ||
706 | fail: | |
9e2f7c11 | 707 | log_warning("%s failed to run stop-pre executable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
708 | socket_enter_stop_post(s, false); |
709 | } | |
710 | ||
e9af15c3 LP |
711 | static void socket_enter_listening(Socket *s) { |
712 | int r; | |
713 | assert(s); | |
714 | ||
715 | if ((r = socket_watch_fds(s)) < 0) { | |
9e2f7c11 | 716 | log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r)); |
e9af15c3 LP |
717 | goto fail; |
718 | } | |
719 | ||
720 | socket_set_state(s, SOCKET_LISTENING); | |
721 | return; | |
722 | ||
723 | fail: | |
724 | socket_enter_stop_pre(s, false); | |
725 | } | |
726 | ||
034c6ed7 LP |
727 | static void socket_enter_start_post(Socket *s) { |
728 | int r; | |
729 | assert(s); | |
730 | ||
e9af15c3 | 731 | if ((r = socket_open_fds(s)) < 0) { |
9e2f7c11 | 732 | log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
733 | goto fail; |
734 | } | |
735 | ||
5e94833f LP |
736 | socket_unwatch_control_pid(s); |
737 | ||
a16e1123 LP |
738 | s->control_command_id = SOCKET_EXEC_START_POST; |
739 | ||
80876c20 | 740 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) { |
e537352b | 741 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) { |
9e2f7c11 | 742 | log_warning("%s failed to run start-post executable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
743 | goto fail; |
744 | } | |
745 | ||
80876c20 LP |
746 | socket_set_state(s, SOCKET_START_POST); |
747 | } else | |
e9af15c3 | 748 | socket_enter_listening(s); |
034c6ed7 LP |
749 | |
750 | return; | |
751 | ||
752 | fail: | |
753 | socket_enter_stop_pre(s, false); | |
754 | } | |
755 | ||
756 | static void socket_enter_start_pre(Socket *s) { | |
757 | int r; | |
758 | assert(s); | |
759 | ||
5e94833f LP |
760 | socket_unwatch_control_pid(s); |
761 | ||
a16e1123 LP |
762 | s->control_command_id = SOCKET_EXEC_START_PRE; |
763 | ||
80876c20 | 764 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) { |
e537352b | 765 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
766 | goto fail; |
767 | ||
80876c20 LP |
768 | socket_set_state(s, SOCKET_START_PRE); |
769 | } else | |
034c6ed7 LP |
770 | socket_enter_start_post(s); |
771 | ||
772 | return; | |
773 | ||
774 | fail: | |
9e2f7c11 | 775 | log_warning("%s failed to run start-pre exectuable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
776 | socket_enter_dead(s, false); |
777 | } | |
778 | ||
4f2d528d | 779 | static void socket_enter_running(Socket *s, int cfd) { |
034c6ed7 LP |
780 | int r; |
781 | ||
782 | assert(s); | |
783 | ||
4f2d528d LP |
784 | if (cfd < 0) { |
785 | if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0) | |
786 | goto fail; | |
787 | ||
788 | socket_set_state(s, SOCKET_RUNNING); | |
789 | } else { | |
790 | Unit *u; | |
791 | char *prefix, *instance, *name; | |
792 | ||
793 | if ((r = instance_from_socket(cfd, s->n_accepted++, &instance))) | |
794 | goto fail; | |
795 | ||
796 | if (!(prefix = unit_name_to_prefix(UNIT(s)->meta.id))) { | |
797 | free(instance); | |
798 | r = -ENOMEM; | |
799 | goto fail; | |
800 | } | |
801 | ||
802 | name = unit_name_build(prefix, instance, ".service"); | |
803 | free(prefix); | |
804 | free(instance); | |
805 | ||
806 | if (!name) | |
807 | r = -ENOMEM; | |
808 | ||
809 | r = manager_load_unit(UNIT(s)->meta.manager, name, NULL, &u); | |
810 | free(name); | |
811 | ||
812 | if (r < 0) | |
813 | goto fail; | |
814 | ||
815 | if ((r = service_set_socket_fd(SERVICE(u), cfd) < 0)) | |
816 | goto fail; | |
817 | ||
818 | cfd = -1; | |
819 | ||
820 | if ((r = manager_add_job(u->meta.manager, JOB_START, u, JOB_REPLACE, true, NULL)) < 0) | |
821 | goto fail; | |
822 | } | |
034c6ed7 | 823 | |
034c6ed7 LP |
824 | return; |
825 | ||
826 | fail: | |
9e2f7c11 | 827 | log_warning("%s failed to queue socket startup job: %s", s->meta.id, strerror(-r)); |
80876c20 | 828 | socket_enter_stop_pre(s, false); |
4f2d528d LP |
829 | |
830 | if (cfd >= 0) | |
831 | close_nointr_nofail(cfd); | |
034c6ed7 LP |
832 | } |
833 | ||
834 | static void socket_run_next(Socket *s, bool success) { | |
835 | int r; | |
836 | ||
837 | assert(s); | |
838 | assert(s->control_command); | |
839 | assert(s->control_command->command_next); | |
840 | ||
841 | if (!success) | |
842 | s->failure = true; | |
843 | ||
5e94833f LP |
844 | socket_unwatch_control_pid(s); |
845 | ||
034c6ed7 LP |
846 | s->control_command = s->control_command->command_next; |
847 | ||
e537352b | 848 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
849 | goto fail; |
850 | ||
851 | return; | |
852 | ||
853 | fail: | |
9e2f7c11 | 854 | log_warning("%s failed to run spawn next executable: %s", s->meta.id, strerror(-r)); |
80876c20 LP |
855 | |
856 | if (s->state == SOCKET_START_POST) | |
857 | socket_enter_stop_pre(s, false); | |
034c6ed7 LP |
858 | else if (s->state == SOCKET_STOP_POST) |
859 | socket_enter_dead(s, false); | |
860 | else | |
80876c20 | 861 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
862 | } |
863 | ||
87f0e418 LP |
864 | static int socket_start(Unit *u) { |
865 | Socket *s = SOCKET(u); | |
83c60c9f LP |
866 | |
867 | assert(s); | |
868 | ||
034c6ed7 LP |
869 | /* We cannot fulfill this request right now, try again later |
870 | * please! */ | |
871 | if (s->state == SOCKET_STOP_PRE || | |
872 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
873 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
874 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
875 | s->state == SOCKET_FINAL_SIGTERM || |
876 | s->state == SOCKET_FINAL_SIGKILL) | |
034c6ed7 LP |
877 | return -EAGAIN; |
878 | ||
83c60c9f LP |
879 | if (s->state == SOCKET_START_PRE || |
880 | s->state == SOCKET_START_POST) | |
034c6ed7 | 881 | return 0; |
83c60c9f | 882 | |
034c6ed7 | 883 | /* Cannot run this without the service being around */ |
4f2d528d LP |
884 | if (s->service) { |
885 | if (s->service->meta.load_state != UNIT_LOADED) | |
886 | return -ENOENT; | |
887 | ||
888 | /* If the service is alredy actvie we cannot start the | |
889 | * socket */ | |
890 | if (s->service->state != SERVICE_DEAD && | |
891 | s->service->state != SERVICE_MAINTAINANCE && | |
892 | s->service->state != SERVICE_AUTO_RESTART) | |
893 | return -EBUSY; | |
894 | } | |
e537352b | 895 | |
034c6ed7 | 896 | assert(s->state == SOCKET_DEAD || s->state == SOCKET_MAINTAINANCE); |
83c60c9f | 897 | |
034c6ed7 LP |
898 | s->failure = false; |
899 | socket_enter_start_pre(s); | |
900 | return 0; | |
901 | } | |
83c60c9f | 902 | |
87f0e418 LP |
903 | static int socket_stop(Unit *u) { |
904 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
905 | |
906 | assert(s); | |
907 | ||
908 | /* We cannot fulfill this request right now, try again later | |
909 | * please! */ | |
910 | if (s->state == SOCKET_START_PRE || | |
911 | s->state == SOCKET_START_POST) | |
912 | return -EAGAIN; | |
83c60c9f | 913 | |
e537352b LP |
914 | /* Already on it */ |
915 | if (s->state == SOCKET_STOP_PRE || | |
916 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
917 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
918 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
919 | s->state == SOCKET_FINAL_SIGTERM || |
920 | s->state == SOCKET_FINAL_SIGTERM) | |
e537352b LP |
921 | return 0; |
922 | ||
034c6ed7 | 923 | assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING); |
83c60c9f | 924 | |
034c6ed7 | 925 | socket_enter_stop_pre(s, true); |
542563ba LP |
926 | return 0; |
927 | } | |
928 | ||
a16e1123 LP |
929 | static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { |
930 | Socket *s = SOCKET(u); | |
931 | SocketPort *p; | |
932 | int r; | |
933 | ||
934 | assert(u); | |
935 | assert(f); | |
936 | assert(fds); | |
937 | ||
938 | unit_serialize_item(u, f, "state", socket_state_to_string(s->state)); | |
939 | unit_serialize_item(u, f, "failure", yes_no(s->failure)); | |
940 | unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted); | |
941 | ||
942 | if (s->control_pid > 0) | |
943 | unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) s->control_pid); | |
944 | ||
945 | if (s->control_command_id >= 0) | |
946 | unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id)); | |
947 | ||
948 | LIST_FOREACH(port, p, s->ports) { | |
949 | int copy; | |
950 | ||
951 | if (p->fd < 0) | |
952 | continue; | |
953 | ||
954 | if ((copy = fdset_put_dup(fds, p->fd)) < 0) | |
955 | return copy; | |
956 | ||
957 | if (p->type == SOCKET_SOCKET) { | |
958 | char *t; | |
959 | ||
960 | if ((r = socket_address_print(&p->address, &t)) < 0) | |
961 | return r; | |
962 | ||
963 | unit_serialize_item_format(u, f, "socket", "%i %s", copy, t); | |
964 | free(t); | |
965 | } else { | |
966 | assert(p->type == SOCKET_FIFO); | |
967 | unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path); | |
968 | } | |
969 | } | |
970 | ||
971 | return 0; | |
972 | } | |
973 | ||
974 | static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
975 | Socket *s = SOCKET(u); | |
976 | int r; | |
977 | ||
978 | assert(u); | |
979 | assert(key); | |
980 | assert(value); | |
981 | assert(fds); | |
982 | ||
983 | if (streq(key, "state")) { | |
984 | SocketState state; | |
985 | ||
986 | if ((state = socket_state_from_string(value)) < 0) | |
987 | log_debug("Failed to parse state value %s", value); | |
988 | else | |
989 | s->deserialized_state = state; | |
990 | } else if (streq(key, "failure")) { | |
991 | int b; | |
992 | ||
993 | if ((b = parse_boolean(value)) < 0) | |
994 | log_debug("Failed to parse failure value %s", value); | |
995 | else | |
996 | s->failure = b || s->failure; | |
997 | ||
998 | } else if (streq(key, "n-accepted")) { | |
999 | unsigned k; | |
1000 | ||
1001 | if ((r = safe_atou(value, &k)) < 0) | |
1002 | log_debug("Failed to parse n-accepted value %s", value); | |
1003 | else | |
1004 | s->n_accepted += k; | |
1005 | } else if (streq(key, "control-pid")) { | |
1006 | unsigned pid; | |
1007 | ||
1008 | if ((r = safe_atou(value, &pid)) < 0 || pid <= 0) | |
1009 | log_debug("Failed to parse control-pid value %s", value); | |
1010 | else | |
1011 | s->control_pid = (pid_t) pid; | |
1012 | } else if (streq(key, "control-command")) { | |
1013 | SocketExecCommand id; | |
1014 | ||
1015 | if ((id = socket_exec_command_from_string(value)) < 0) | |
1016 | log_debug("Failed to parse exec-command value %s", value); | |
1017 | else { | |
1018 | s->control_command_id = id; | |
1019 | s->control_command = s->exec_command[id]; | |
1020 | } | |
1021 | } else if (streq(key, "fifo")) { | |
1022 | int fd, skip = 0; | |
1023 | SocketPort *p; | |
1024 | ||
1025 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1026 | log_debug("Failed to parse fifo value %s", value); | |
1027 | else { | |
1028 | ||
1029 | LIST_FOREACH(port, p, s->ports) | |
1030 | if (streq(p->path, value+skip)) | |
1031 | break; | |
1032 | ||
1033 | if (p) { | |
1034 | if (p->fd >= 0) | |
1035 | close_nointr_nofail(p->fd); | |
1036 | p->fd = fdset_remove(fds, fd); | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | } else if (streq(key, "socket")) { | |
1041 | int fd, skip = 0; | |
1042 | SocketPort *p; | |
1043 | ||
1044 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1045 | log_debug("Failed to parse socket value %s", value); | |
1046 | else { | |
1047 | ||
1048 | LIST_FOREACH(port, p, s->ports) | |
1049 | if (socket_address_is(&p->address, value+skip)) | |
1050 | break; | |
1051 | ||
1052 | if (p) { | |
1053 | if (p->fd >= 0) | |
1054 | close_nointr_nofail(p->fd); | |
1055 | p->fd = fdset_remove(fds, fd); | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | } else | |
1060 | log_debug("Unknown serialization key '%s'", key); | |
1061 | ||
1062 | return 0; | |
1063 | } | |
1064 | ||
87f0e418 LP |
1065 | static UnitActiveState socket_active_state(Unit *u) { |
1066 | assert(u); | |
5cb5a6ff | 1067 | |
acbb0225 | 1068 | return state_translation_table[SOCKET(u)->state]; |
5cb5a6ff LP |
1069 | } |
1070 | ||
10a94420 LP |
1071 | static const char *socket_sub_state_to_string(Unit *u) { |
1072 | assert(u); | |
1073 | ||
a16e1123 | 1074 | return socket_state_to_string(SOCKET(u)->state); |
10a94420 LP |
1075 | } |
1076 | ||
acbb0225 | 1077 | static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 | 1078 | Socket *s = SOCKET(u); |
4f2d528d | 1079 | int cfd = -1; |
9152c765 | 1080 | |
034c6ed7 | 1081 | assert(s); |
8d567588 | 1082 | assert(fd >= 0); |
9152c765 | 1083 | |
9e2f7c11 | 1084 | log_debug("Incoming traffic on %s", u->meta.id); |
9152c765 | 1085 | |
4f2d528d LP |
1086 | if (events != EPOLLIN) { |
1087 | log_error("Got invalid poll event on socket."); | |
8d567588 | 1088 | goto fail; |
4f2d528d LP |
1089 | } |
1090 | ||
1091 | if (w->data.socket_accept) { | |
1092 | for (;;) { | |
1093 | ||
1094 | if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) { | |
1095 | ||
1096 | if (errno == EINTR) | |
1097 | continue; | |
1098 | ||
1099 | log_error("Failed to accept socket: %m"); | |
8d567588 | 1100 | goto fail; |
4f2d528d LP |
1101 | } |
1102 | ||
1103 | break; | |
1104 | } | |
1105 | } | |
9152c765 | 1106 | |
a16e1123 | 1107 | log_debug("cfd=%i", cfd); |
4f2d528d | 1108 | socket_enter_running(s, cfd); |
8d567588 LP |
1109 | return; |
1110 | ||
1111 | fail: | |
1112 | socket_enter_stop_pre(s, false); | |
9152c765 LP |
1113 | } |
1114 | ||
87f0e418 LP |
1115 | static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1116 | Socket *s = SOCKET(u); | |
034c6ed7 | 1117 | bool success; |
5cb5a6ff LP |
1118 | |
1119 | assert(s); | |
034c6ed7 | 1120 | assert(pid >= 0); |
5cb5a6ff | 1121 | |
bd982a8b | 1122 | success = code == CLD_EXITED && status == 0; |
034c6ed7 | 1123 | s->failure = s->failure || !success; |
542563ba | 1124 | |
034c6ed7 | 1125 | assert(s->control_pid == pid); |
034c6ed7 LP |
1126 | s->control_pid = 0; |
1127 | ||
a16e1123 LP |
1128 | if (s->control_command) |
1129 | exec_status_fill(&s->control_command->exec_status, pid, code, status); | |
1130 | ||
9e2f7c11 | 1131 | log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); |
034c6ed7 | 1132 | |
a16e1123 LP |
1133 | if (s->control_command && s->control_command->command_next && success) { |
1134 | log_debug("%s running next command for state %s", u->meta.id, socket_state_to_string(s->state)); | |
034c6ed7 | 1135 | socket_run_next(s, success); |
acbb0225 | 1136 | } else { |
a16e1123 LP |
1137 | s->control_command = NULL; |
1138 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
1139 | ||
034c6ed7 LP |
1140 | /* No further commands for this step, so let's figure |
1141 | * out what to do next */ | |
5cb5a6ff | 1142 | |
a16e1123 | 1143 | log_debug("%s got final SIGCHLD for state %s", u->meta.id, socket_state_to_string(s->state)); |
acbb0225 | 1144 | |
034c6ed7 LP |
1145 | switch (s->state) { |
1146 | ||
1147 | case SOCKET_START_PRE: | |
1148 | if (success) | |
acbb0225 | 1149 | socket_enter_start_post(s); |
034c6ed7 | 1150 | else |
80876c20 | 1151 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
1152 | break; |
1153 | ||
1154 | case SOCKET_START_POST: | |
1155 | if (success) | |
e9af15c3 | 1156 | socket_enter_listening(s); |
034c6ed7 LP |
1157 | else |
1158 | socket_enter_stop_pre(s, false); | |
1159 | break; | |
1160 | ||
1161 | case SOCKET_STOP_PRE: | |
1162 | case SOCKET_STOP_PRE_SIGTERM: | |
1163 | case SOCKET_STOP_PRE_SIGKILL: | |
1164 | socket_enter_stop_post(s, success); | |
1165 | break; | |
1166 | ||
1167 | case SOCKET_STOP_POST: | |
80876c20 LP |
1168 | case SOCKET_FINAL_SIGTERM: |
1169 | case SOCKET_FINAL_SIGKILL: | |
034c6ed7 LP |
1170 | socket_enter_dead(s, success); |
1171 | break; | |
1172 | ||
1173 | default: | |
1174 | assert_not_reached("Uh, control process died at wrong time."); | |
1175 | } | |
1176 | } | |
1177 | } | |
5cb5a6ff | 1178 | |
acbb0225 | 1179 | static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) { |
87f0e418 | 1180 | Socket *s = SOCKET(u); |
5cb5a6ff | 1181 | |
034c6ed7 LP |
1182 | assert(s); |
1183 | assert(elapsed == 1); | |
acbb0225 | 1184 | assert(w == &s->timer_watch); |
034c6ed7 LP |
1185 | |
1186 | switch (s->state) { | |
1187 | ||
1188 | case SOCKET_START_PRE: | |
9e2f7c11 | 1189 | log_warning("%s starting timed out. Terminating.", u->meta.id); |
80876c20 LP |
1190 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
1191 | ||
034c6ed7 | 1192 | case SOCKET_START_POST: |
9e2f7c11 | 1193 | log_warning("%s starting timed out. Stopping.", u->meta.id); |
034c6ed7 LP |
1194 | socket_enter_stop_pre(s, false); |
1195 | break; | |
1196 | ||
1197 | case SOCKET_STOP_PRE: | |
9e2f7c11 | 1198 | log_warning("%s stopping timed out. Terminating.", u->meta.id); |
034c6ed7 LP |
1199 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false); |
1200 | break; | |
1201 | ||
1202 | case SOCKET_STOP_PRE_SIGTERM: | |
9e2f7c11 | 1203 | log_warning("%s stopping timed out. Killing.", u->meta.id); |
034c6ed7 LP |
1204 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false); |
1205 | break; | |
1206 | ||
1207 | case SOCKET_STOP_PRE_SIGKILL: | |
9e2f7c11 | 1208 | log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id); |
034c6ed7 LP |
1209 | socket_enter_stop_post(s, false); |
1210 | break; | |
1211 | ||
1212 | case SOCKET_STOP_POST: | |
9e2f7c11 | 1213 | log_warning("%s stopping timed out (2). Terminating.", u->meta.id); |
80876c20 | 1214 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
1215 | break; |
1216 | ||
80876c20 | 1217 | case SOCKET_FINAL_SIGTERM: |
9e2f7c11 | 1218 | log_warning("%s stopping timed out (2). Killing.", u->meta.id); |
80876c20 | 1219 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false); |
034c6ed7 LP |
1220 | break; |
1221 | ||
80876c20 | 1222 | case SOCKET_FINAL_SIGKILL: |
9e2f7c11 | 1223 | log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id); |
034c6ed7 LP |
1224 | socket_enter_dead(s, false); |
1225 | break; | |
1226 | ||
1227 | default: | |
1228 | assert_not_reached("Timeout at wrong time."); | |
1229 | } | |
5cb5a6ff LP |
1230 | } |
1231 | ||
44d8db9e LP |
1232 | int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { |
1233 | int *rfds; | |
1234 | unsigned rn_fds, k; | |
1235 | SocketPort *p; | |
1236 | ||
1237 | assert(s); | |
1238 | assert(fds); | |
1239 | assert(n_fds); | |
1240 | ||
1241 | /* Called from the service code for requesting our fds */ | |
1242 | ||
1243 | rn_fds = 0; | |
1244 | LIST_FOREACH(port, p, s->ports) | |
1245 | if (p->fd >= 0) | |
1246 | rn_fds++; | |
1247 | ||
1248 | if (!(rfds = new(int, rn_fds)) < 0) | |
1249 | return -ENOMEM; | |
1250 | ||
1251 | k = 0; | |
1252 | LIST_FOREACH(port, p, s->ports) | |
1253 | if (p->fd >= 0) | |
1254 | rfds[k++] = p->fd; | |
1255 | ||
1256 | assert(k == rn_fds); | |
1257 | ||
1258 | *fds = rfds; | |
1259 | *n_fds = rn_fds; | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
ceee3d82 LP |
1264 | void socket_notify_service_dead(Socket *s) { |
1265 | assert(s); | |
1266 | ||
1267 | /* The service is dead. Dang. */ | |
1268 | ||
1269 | if (s->state == SOCKET_RUNNING) { | |
9e2f7c11 | 1270 | log_debug("%s got notified about service death.", s->meta.id); |
ceee3d82 LP |
1271 | socket_enter_listening(s); |
1272 | } | |
1273 | } | |
1274 | ||
a16e1123 LP |
1275 | static const char* const socket_state_table[_SOCKET_STATE_MAX] = { |
1276 | [SOCKET_DEAD] = "dead", | |
1277 | [SOCKET_START_PRE] = "start-pre", | |
1278 | [SOCKET_START_POST] = "start-post", | |
1279 | [SOCKET_LISTENING] = "listening", | |
1280 | [SOCKET_RUNNING] = "running", | |
1281 | [SOCKET_STOP_PRE] = "stop-pre", | |
1282 | [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm", | |
1283 | [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill", | |
1284 | [SOCKET_STOP_POST] = "stop-post", | |
1285 | [SOCKET_FINAL_SIGTERM] = "final-sigterm", | |
1286 | [SOCKET_FINAL_SIGKILL] = "final-sigkill", | |
1287 | [SOCKET_MAINTAINANCE] = "maintainance" | |
1288 | }; | |
1289 | ||
1290 | DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState); | |
1291 | ||
1292 | static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = { | |
1293 | [SOCKET_EXEC_START_PRE] = "StartPre", | |
1294 | [SOCKET_EXEC_START_POST] = "StartPost", | |
1295 | [SOCKET_EXEC_STOP_PRE] = "StopPre", | |
1296 | [SOCKET_EXEC_STOP_POST] = "StopPost" | |
1297 | }; | |
1298 | ||
1299 | DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand); | |
1300 | ||
87f0e418 | 1301 | const UnitVTable socket_vtable = { |
5cb5a6ff LP |
1302 | .suffix = ".socket", |
1303 | ||
034c6ed7 LP |
1304 | .init = socket_init, |
1305 | .done = socket_done, | |
a16e1123 LP |
1306 | .load = socket_load, |
1307 | ||
1308 | .coldplug = socket_coldplug, | |
034c6ed7 | 1309 | |
5cb5a6ff LP |
1310 | .dump = socket_dump, |
1311 | ||
542563ba LP |
1312 | .start = socket_start, |
1313 | .stop = socket_stop, | |
5cb5a6ff | 1314 | |
a16e1123 LP |
1315 | .serialize = socket_serialize, |
1316 | .deserialize_item = socket_deserialize_item, | |
1317 | ||
5cb5a6ff | 1318 | .active_state = socket_active_state, |
10a94420 | 1319 | .sub_state_to_string = socket_sub_state_to_string, |
5cb5a6ff | 1320 | |
9152c765 | 1321 | .fd_event = socket_fd_event, |
034c6ed7 | 1322 | .sigchld_event = socket_sigchld_event, |
4139c1b2 LP |
1323 | .timer_event = socket_timer_event, |
1324 | ||
1325 | .bus_message_handler = bus_socket_message_handler | |
5cb5a6ff | 1326 | }; |