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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 | ||
dd5ad9d4 LP |
122 | LIST_FOREACH(port, p, s->ports) { |
123 | ||
124 | if (p->type != SOCKET_SOCKET) | |
125 | return true; | |
126 | ||
4f2d528d LP |
127 | if (!socket_address_can_accept(&p->address)) |
128 | return true; | |
dd5ad9d4 | 129 | } |
4f2d528d LP |
130 | |
131 | return false; | |
132 | } | |
133 | ||
134 | static int socket_verify(Socket *s) { | |
135 | assert(s); | |
136 | ||
137 | if (UNIT(s)->meta.load_state != UNIT_LOADED) | |
138 | return 0; | |
139 | ||
140 | if (!s->ports) { | |
141 | log_error("%s lacks Listen setting. Refusing.", UNIT(s)->meta.id); | |
142 | return -EINVAL; | |
143 | } | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
e537352b LP |
148 | static int socket_load(Unit *u) { |
149 | Socket *s = SOCKET(u); | |
150 | int r; | |
44d8db9e | 151 | |
e537352b LP |
152 | assert(u); |
153 | assert(u->meta.load_state == UNIT_STUB); | |
44d8db9e | 154 | |
e537352b | 155 | if ((r = unit_load_fragment_and_dropin(u)) < 0) |
23a177ef | 156 | return r; |
44d8db9e | 157 | |
23a177ef | 158 | /* This is a new unit? Then let's add in some extras */ |
e537352b | 159 | if (u->meta.load_state == UNIT_LOADED) { |
44d8db9e | 160 | |
4f2d528d LP |
161 | if (have_non_accept_socket(s)) { |
162 | if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service))) | |
163 | return r; | |
23a177ef | 164 | |
701cc384 | 165 | if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service), true)) < 0) |
4f2d528d LP |
166 | return r; |
167 | } | |
44d8db9e | 168 | |
23a177ef LP |
169 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) |
170 | return r; | |
171 | ||
172 | if ((r = unit_add_default_cgroup(u)) < 0) | |
173 | return r; | |
174 | } | |
175 | ||
4f2d528d | 176 | return socket_verify(s); |
44d8db9e LP |
177 | } |
178 | ||
542563ba LP |
179 | static const char* listen_lookup(int type) { |
180 | ||
181 | if (type == SOCK_STREAM) | |
182 | return "ListenStream"; | |
183 | else if (type == SOCK_DGRAM) | |
184 | return "ListenDatagram"; | |
185 | else if (type == SOCK_SEQPACKET) | |
186 | return "ListenSequentialPacket"; | |
187 | ||
034c6ed7 | 188 | assert_not_reached("Unknown socket type"); |
542563ba LP |
189 | return NULL; |
190 | } | |
191 | ||
87f0e418 | 192 | static void socket_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 193 | |
5cb5a6ff | 194 | SocketExecCommand c; |
87f0e418 | 195 | Socket *s = SOCKET(u); |
542563ba | 196 | SocketPort *p; |
82ba9f08 LP |
197 | const char *prefix2; |
198 | char *p2; | |
5cb5a6ff LP |
199 | |
200 | assert(s); | |
fa068367 | 201 | assert(f); |
5cb5a6ff | 202 | |
82ba9f08 LP |
203 | p2 = strappend(prefix, "\t"); |
204 | prefix2 = p2 ? p2 : prefix; | |
c43d20a0 | 205 | |
5cb5a6ff LP |
206 | fprintf(f, |
207 | "%sSocket State: %s\n" | |
542563ba | 208 | "%sBindIPv6Only: %s\n" |
b5a0699f | 209 | "%sBacklog: %u\n" |
50159e6a | 210 | "%sKillMode: %s\n" |
b5a0699f LP |
211 | "%sSocketMode: %04o\n" |
212 | "%sDirectoryMode: %04o\n", | |
a16e1123 | 213 | prefix, socket_state_to_string(s->state), |
542563ba | 214 | prefix, yes_no(s->bind_ipv6_only), |
b5a0699f | 215 | prefix, s->backlog, |
50159e6a | 216 | prefix, kill_mode_to_string(s->kill_mode), |
b5a0699f LP |
217 | prefix, s->socket_mode, |
218 | prefix, s->directory_mode); | |
542563ba | 219 | |
70123e68 LP |
220 | if (s->control_pid > 0) |
221 | fprintf(f, | |
222 | "%sControl PID: %llu\n", | |
223 | prefix, (unsigned long long) s->control_pid); | |
224 | ||
acbb0225 LP |
225 | if (s->bind_to_device) |
226 | fprintf(f, | |
227 | "%sBindToDevice: %s\n", | |
228 | prefix, s->bind_to_device); | |
229 | ||
4f2d528d LP |
230 | if (s->accept) |
231 | fprintf(f, | |
232 | "%sAccepted: %u\n", | |
233 | prefix, s->n_accepted); | |
234 | ||
034c6ed7 | 235 | LIST_FOREACH(port, p, s->ports) { |
5cb5a6ff | 236 | |
542563ba LP |
237 | if (p->type == SOCKET_SOCKET) { |
238 | const char *t; | |
239 | int r; | |
240 | char *k; | |
241 | ||
242 | if ((r = socket_address_print(&p->address, &k)) < 0) | |
243 | t = strerror(-r); | |
244 | else | |
245 | t = k; | |
246 | ||
247 | fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), k); | |
248 | free(k); | |
249 | } else | |
250 | fprintf(f, "%sListenFIFO: %s\n", prefix, p->path); | |
251 | } | |
5cb5a6ff LP |
252 | |
253 | exec_context_dump(&s->exec_context, f, prefix); | |
254 | ||
e537352b | 255 | for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) { |
c43d20a0 LP |
256 | if (!s->exec_command[c]) |
257 | continue; | |
5cb5a6ff | 258 | |
40d50879 | 259 | fprintf(f, "%s-> %s:\n", |
a16e1123 | 260 | prefix, socket_exec_command_to_string(c)); |
c43d20a0 LP |
261 | |
262 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 263 | } |
c43d20a0 | 264 | |
82ba9f08 | 265 | free(p2); |
5cb5a6ff LP |
266 | } |
267 | ||
4f2d528d LP |
268 | static int instance_from_socket(int fd, unsigned nr, char **instance) { |
269 | socklen_t l; | |
270 | char *r; | |
271 | union { | |
272 | struct sockaddr sa; | |
273 | struct sockaddr_un un; | |
274 | struct sockaddr_in in; | |
275 | struct sockaddr_in6 in6; | |
276 | struct sockaddr_storage storage; | |
277 | } local, remote; | |
278 | ||
279 | assert(fd >= 0); | |
280 | assert(instance); | |
281 | ||
282 | l = sizeof(local); | |
283 | if (getsockname(fd, &local.sa, &l) < 0) | |
284 | return -errno; | |
285 | ||
286 | l = sizeof(remote); | |
287 | if (getpeername(fd, &remote.sa, &l) < 0) | |
288 | return -errno; | |
289 | ||
290 | switch (local.sa.sa_family) { | |
291 | ||
292 | case AF_INET: { | |
293 | uint32_t | |
294 | a = ntohl(local.in.sin_addr.s_addr), | |
295 | b = ntohl(remote.in.sin_addr.s_addr); | |
296 | ||
297 | if (asprintf(&r, | |
a16e1123 | 298 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
4f2d528d LP |
299 | nr, |
300 | a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF, | |
301 | ntohs(local.in.sin_port), | |
302 | b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF, | |
303 | ntohs(remote.in.sin_port)) < 0) | |
304 | return -ENOMEM; | |
305 | ||
306 | break; | |
307 | } | |
308 | ||
309 | case AF_INET6: { | |
310 | char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN]; | |
311 | ||
312 | if (asprintf(&r, | |
a16e1123 | 313 | "%u-%s:%u-%s:%u", |
4f2d528d LP |
314 | nr, |
315 | inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)), | |
316 | ntohs(local.in6.sin6_port), | |
317 | inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)), | |
318 | ntohs(remote.in6.sin6_port)) < 0) | |
319 | return -ENOMEM; | |
320 | ||
321 | break; | |
322 | } | |
323 | ||
324 | case AF_UNIX: { | |
325 | struct ucred ucred; | |
326 | ||
327 | l = sizeof(ucred); | |
328 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) | |
329 | return -errno; | |
330 | ||
331 | if (asprintf(&r, | |
332 | "%u-%llu-%llu", | |
333 | nr, | |
334 | (unsigned long long) ucred.pid, | |
335 | (unsigned long long) ucred.uid) < 0) | |
336 | return -ENOMEM; | |
337 | ||
338 | break; | |
339 | } | |
340 | ||
341 | default: | |
342 | assert_not_reached("Unhandled socket type."); | |
343 | } | |
344 | ||
345 | *instance = r; | |
346 | return 0; | |
347 | } | |
348 | ||
034c6ed7 | 349 | static void socket_close_fds(Socket *s) { |
83c60c9f LP |
350 | SocketPort *p; |
351 | ||
352 | assert(s); | |
353 | ||
034c6ed7 | 354 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f LP |
355 | if (p->fd < 0) |
356 | continue; | |
357 | ||
acbb0225 | 358 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
a16e1123 LP |
359 | close_nointr_nofail(p->fd); |
360 | ||
361 | /* One little note: we should never delete any sockets | |
362 | * in the file system here! After all some other | |
363 | * process we spawned might still have a reference of | |
364 | * this fd and wants to continue to use it. Therefore | |
365 | * we delete sockets in the file system before we | |
366 | * create a new one, not after we stopped using | |
367 | * one! */ | |
9152c765 | 368 | |
83c60c9f LP |
369 | p->fd = -1; |
370 | } | |
371 | } | |
372 | ||
034c6ed7 | 373 | static int socket_open_fds(Socket *s) { |
83c60c9f LP |
374 | SocketPort *p; |
375 | int r; | |
376 | ||
377 | assert(s); | |
378 | ||
034c6ed7 | 379 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f | 380 | |
034c6ed7 LP |
381 | if (p->fd >= 0) |
382 | continue; | |
83c60c9f LP |
383 | |
384 | if (p->type == SOCKET_SOCKET) { | |
385 | ||
b5a0699f LP |
386 | if ((r = socket_address_listen( |
387 | &p->address, | |
388 | s->backlog, | |
389 | s->bind_ipv6_only, | |
390 | s->bind_to_device, | |
391 | s->directory_mode, | |
392 | s->socket_mode, | |
393 | &p->fd)) < 0) | |
83c60c9f LP |
394 | goto rollback; |
395 | ||
396 | } else { | |
397 | struct stat st; | |
398 | assert(p->type == SOCKET_FIFO); | |
399 | ||
8cb45bf8 LP |
400 | mkdir_parents(p->path, s->directory_mode); |
401 | ||
402 | if (mkfifo(p->path, s->socket_mode) < 0 && errno != EEXIST) { | |
83c60c9f LP |
403 | r = -errno; |
404 | goto rollback; | |
405 | } | |
406 | ||
407 | if ((p->fd = open(p->path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) { | |
408 | r = -errno; | |
409 | goto rollback; | |
410 | } | |
411 | ||
412 | if (fstat(p->fd, &st) < 0) { | |
413 | r = -errno; | |
414 | goto rollback; | |
415 | } | |
416 | ||
417 | /* FIXME verify user, access mode */ | |
418 | ||
419 | if (!S_ISFIFO(st.st_mode)) { | |
420 | r = -EEXIST; | |
421 | goto rollback; | |
422 | } | |
423 | } | |
034c6ed7 LP |
424 | } |
425 | ||
426 | return 0; | |
427 | ||
428 | rollback: | |
429 | socket_close_fds(s); | |
430 | return r; | |
431 | } | |
432 | ||
433 | static void socket_unwatch_fds(Socket *s) { | |
434 | SocketPort *p; | |
9152c765 | 435 | |
034c6ed7 LP |
436 | assert(s); |
437 | ||
438 | LIST_FOREACH(port, p, s->ports) { | |
439 | if (p->fd < 0) | |
440 | continue; | |
441 | ||
acbb0225 | 442 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
83c60c9f | 443 | } |
034c6ed7 LP |
444 | } |
445 | ||
446 | static int socket_watch_fds(Socket *s) { | |
447 | SocketPort *p; | |
448 | int r; | |
449 | ||
450 | assert(s); | |
83c60c9f | 451 | |
034c6ed7 LP |
452 | LIST_FOREACH(port, p, s->ports) { |
453 | if (p->fd < 0) | |
454 | continue; | |
455 | ||
cabab516 | 456 | p->fd_watch.socket_accept = |
4f2d528d | 457 | s->accept && |
dd5ad9d4 | 458 | p->type == SOCKET_SOCKET && |
4f2d528d LP |
459 | socket_address_can_accept(&p->address); |
460 | ||
f94ea366 | 461 | if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0) |
034c6ed7 LP |
462 | goto fail; |
463 | } | |
83c60c9f | 464 | |
542563ba | 465 | return 0; |
83c60c9f | 466 | |
034c6ed7 LP |
467 | fail: |
468 | socket_unwatch_fds(s); | |
469 | return r; | |
470 | } | |
471 | ||
472 | static void socket_set_state(Socket *s, SocketState state) { | |
473 | SocketState old_state; | |
474 | assert(s); | |
475 | ||
476 | old_state = s->state; | |
477 | s->state = state; | |
478 | ||
479 | if (state != SOCKET_START_PRE && | |
480 | state != SOCKET_START_POST && | |
481 | state != SOCKET_STOP_PRE && | |
482 | state != SOCKET_STOP_PRE_SIGTERM && | |
483 | state != SOCKET_STOP_PRE_SIGKILL && | |
484 | state != SOCKET_STOP_POST && | |
80876c20 LP |
485 | state != SOCKET_FINAL_SIGTERM && |
486 | state != SOCKET_FINAL_SIGKILL) { | |
acbb0225 | 487 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
5e94833f | 488 | socket_unwatch_control_pid(s); |
034c6ed7 | 489 | s->control_command = NULL; |
a16e1123 | 490 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
e537352b | 491 | } |
034c6ed7 | 492 | |
a16e1123 LP |
493 | if (state != SOCKET_LISTENING) |
494 | socket_unwatch_fds(s); | |
495 | ||
034c6ed7 LP |
496 | if (state != SOCKET_START_POST && |
497 | state != SOCKET_LISTENING && | |
498 | state != SOCKET_RUNNING && | |
499 | state != SOCKET_STOP_PRE && | |
500 | state != SOCKET_STOP_PRE_SIGTERM && | |
501 | state != SOCKET_STOP_PRE_SIGKILL) | |
502 | socket_close_fds(s); | |
503 | ||
e537352b | 504 | if (state != old_state) |
40d50879 | 505 | log_debug("%s changed %s -> %s", |
a16e1123 LP |
506 | s->meta.id, |
507 | socket_state_to_string(old_state), | |
508 | socket_state_to_string(state)); | |
acbb0225 LP |
509 | |
510 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); | |
034c6ed7 LP |
511 | } |
512 | ||
a16e1123 LP |
513 | static int socket_coldplug(Unit *u) { |
514 | Socket *s = SOCKET(u); | |
515 | int r; | |
516 | ||
517 | assert(s); | |
518 | assert(s->state == SOCKET_DEAD); | |
519 | ||
520 | if (s->deserialized_state != s->state) { | |
521 | ||
522 | if (s->deserialized_state == SOCKET_START_PRE || | |
523 | s->deserialized_state == SOCKET_START_POST || | |
524 | s->deserialized_state == SOCKET_STOP_PRE || | |
525 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
526 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL || | |
527 | s->deserialized_state == SOCKET_STOP_POST || | |
528 | s->deserialized_state == SOCKET_FINAL_SIGTERM || | |
529 | s->deserialized_state == SOCKET_FINAL_SIGKILL) { | |
530 | ||
531 | if (s->control_pid <= 0) | |
532 | return -EBADMSG; | |
533 | ||
534 | if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) | |
535 | return r; | |
536 | ||
537 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
538 | return r; | |
539 | } | |
540 | ||
541 | if (s->deserialized_state == SOCKET_START_POST || | |
542 | s->deserialized_state == SOCKET_LISTENING || | |
543 | s->deserialized_state == SOCKET_RUNNING || | |
544 | s->deserialized_state == SOCKET_STOP_PRE || | |
545 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
546 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) | |
547 | if ((r = socket_open_fds(s)) < 0) | |
548 | return r; | |
549 | ||
550 | if (s->deserialized_state == SOCKET_LISTENING) | |
551 | if ((r = socket_watch_fds(s)) < 0) | |
552 | return r; | |
553 | ||
554 | socket_set_state(s, s->deserialized_state); | |
555 | } | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
e537352b | 560 | static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { |
034c6ed7 LP |
561 | pid_t pid; |
562 | int r; | |
9e2f7c11 | 563 | char **argv; |
034c6ed7 LP |
564 | |
565 | assert(s); | |
566 | assert(c); | |
567 | assert(_pid); | |
568 | ||
e537352b LP |
569 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
570 | goto fail; | |
034c6ed7 | 571 | |
9e2f7c11 LP |
572 | if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { |
573 | r = -ENOMEM; | |
574 | goto fail; | |
575 | } | |
576 | ||
577 | r = exec_spawn(c, | |
578 | argv, | |
579 | &s->exec_context, | |
580 | NULL, 0, | |
581 | true, | |
582 | true, | |
583 | UNIT(s)->meta.manager->confirm_spawn, | |
584 | UNIT(s)->meta.cgroup_bondings, | |
585 | &pid); | |
586 | ||
587 | strv_free(argv); | |
588 | if (r < 0) | |
034c6ed7 LP |
589 | goto fail; |
590 | ||
87f0e418 | 591 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) |
034c6ed7 LP |
592 | /* FIXME: we need to do something here */ |
593 | goto fail; | |
83c60c9f | 594 | |
034c6ed7 LP |
595 | *_pid = pid; |
596 | ||
597 | return 0; | |
598 | ||
599 | fail: | |
e537352b | 600 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
83c60c9f LP |
601 | |
602 | return r; | |
542563ba LP |
603 | } |
604 | ||
034c6ed7 LP |
605 | static void socket_enter_dead(Socket *s, bool success) { |
606 | assert(s); | |
607 | ||
608 | if (!success) | |
609 | s->failure = true; | |
610 | ||
611 | socket_set_state(s, s->failure ? SOCKET_MAINTAINANCE : SOCKET_DEAD); | |
612 | } | |
613 | ||
80876c20 LP |
614 | static void socket_enter_signal(Socket *s, SocketState state, bool success); |
615 | ||
034c6ed7 LP |
616 | static void socket_enter_stop_post(Socket *s, bool success) { |
617 | int r; | |
618 | assert(s); | |
619 | ||
620 | if (!success) | |
621 | s->failure = true; | |
622 | ||
5e94833f LP |
623 | socket_unwatch_control_pid(s); |
624 | ||
a16e1123 LP |
625 | s->control_command_id = SOCKET_EXEC_STOP_POST; |
626 | ||
80876c20 | 627 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) { |
e537352b | 628 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
629 | goto fail; |
630 | ||
80876c20 LP |
631 | socket_set_state(s, SOCKET_STOP_POST); |
632 | } else | |
633 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true); | |
034c6ed7 LP |
634 | |
635 | return; | |
636 | ||
637 | fail: | |
9e2f7c11 | 638 | log_warning("%s failed to run stop-post executable: %s", s->meta.id, strerror(-r)); |
80876c20 | 639 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
640 | } |
641 | ||
642 | static void socket_enter_signal(Socket *s, SocketState state, bool success) { | |
643 | int r; | |
80876c20 | 644 | bool sent = false; |
034c6ed7 LP |
645 | |
646 | assert(s); | |
647 | ||
648 | if (!success) | |
649 | s->failure = true; | |
650 | ||
80876c20 LP |
651 | if (s->kill_mode != KILL_NONE) { |
652 | int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? SIGTERM : SIGKILL; | |
034c6ed7 | 653 | |
50159e6a LP |
654 | if (s->kill_mode == KILL_CONTROL_GROUP) { |
655 | ||
656 | if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) { | |
657 | if (r != -EAGAIN && r != -ESRCH) | |
658 | goto fail; | |
659 | } else | |
660 | sent = true; | |
034c6ed7 | 661 | } |
50159e6a | 662 | |
80876c20 | 663 | if (!sent && s->control_pid > 0) |
50159e6a LP |
664 | if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) { |
665 | r = -errno; | |
666 | goto fail; | |
667 | } | |
d6ea93e3 | 668 | } |
034c6ed7 | 669 | |
80876c20 LP |
670 | if (sent) { |
671 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
672 | goto fail; | |
d6ea93e3 | 673 | |
80876c20 LP |
674 | socket_set_state(s, state); |
675 | } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
676 | socket_enter_stop_post(s, true); | |
677 | else | |
034c6ed7 LP |
678 | socket_enter_dead(s, true); |
679 | ||
680 | return; | |
681 | ||
682 | fail: | |
9e2f7c11 | 683 | log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
684 | |
685 | if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
686 | socket_enter_stop_post(s, false); | |
687 | else | |
688 | socket_enter_dead(s, false); | |
689 | } | |
690 | ||
691 | static void socket_enter_stop_pre(Socket *s, bool success) { | |
692 | int r; | |
693 | assert(s); | |
694 | ||
695 | if (!success) | |
696 | s->failure = true; | |
697 | ||
5e94833f LP |
698 | socket_unwatch_control_pid(s); |
699 | ||
a16e1123 LP |
700 | s->control_command_id = SOCKET_EXEC_STOP_PRE; |
701 | ||
80876c20 | 702 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) { |
e537352b | 703 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
704 | goto fail; |
705 | ||
80876c20 LP |
706 | socket_set_state(s, SOCKET_STOP_PRE); |
707 | } else | |
034c6ed7 LP |
708 | socket_enter_stop_post(s, true); |
709 | ||
710 | return; | |
711 | ||
712 | fail: | |
9e2f7c11 | 713 | log_warning("%s failed to run stop-pre executable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
714 | socket_enter_stop_post(s, false); |
715 | } | |
716 | ||
e9af15c3 LP |
717 | static void socket_enter_listening(Socket *s) { |
718 | int r; | |
719 | assert(s); | |
720 | ||
721 | if ((r = socket_watch_fds(s)) < 0) { | |
9e2f7c11 | 722 | log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r)); |
e9af15c3 LP |
723 | goto fail; |
724 | } | |
725 | ||
726 | socket_set_state(s, SOCKET_LISTENING); | |
727 | return; | |
728 | ||
729 | fail: | |
730 | socket_enter_stop_pre(s, false); | |
731 | } | |
732 | ||
034c6ed7 LP |
733 | static void socket_enter_start_post(Socket *s) { |
734 | int r; | |
735 | assert(s); | |
736 | ||
e9af15c3 | 737 | if ((r = socket_open_fds(s)) < 0) { |
9e2f7c11 | 738 | log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
739 | goto fail; |
740 | } | |
741 | ||
5e94833f LP |
742 | socket_unwatch_control_pid(s); |
743 | ||
a16e1123 LP |
744 | s->control_command_id = SOCKET_EXEC_START_POST; |
745 | ||
80876c20 | 746 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) { |
e537352b | 747 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) { |
9e2f7c11 | 748 | log_warning("%s failed to run start-post executable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
749 | goto fail; |
750 | } | |
751 | ||
80876c20 LP |
752 | socket_set_state(s, SOCKET_START_POST); |
753 | } else | |
e9af15c3 | 754 | socket_enter_listening(s); |
034c6ed7 LP |
755 | |
756 | return; | |
757 | ||
758 | fail: | |
759 | socket_enter_stop_pre(s, false); | |
760 | } | |
761 | ||
762 | static void socket_enter_start_pre(Socket *s) { | |
763 | int r; | |
764 | assert(s); | |
765 | ||
5e94833f LP |
766 | socket_unwatch_control_pid(s); |
767 | ||
a16e1123 LP |
768 | s->control_command_id = SOCKET_EXEC_START_PRE; |
769 | ||
80876c20 | 770 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) { |
e537352b | 771 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
772 | goto fail; |
773 | ||
80876c20 LP |
774 | socket_set_state(s, SOCKET_START_PRE); |
775 | } else | |
034c6ed7 LP |
776 | socket_enter_start_post(s); |
777 | ||
778 | return; | |
779 | ||
780 | fail: | |
9e2f7c11 | 781 | log_warning("%s failed to run start-pre exectuable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
782 | socket_enter_dead(s, false); |
783 | } | |
784 | ||
4f2d528d | 785 | static void socket_enter_running(Socket *s, int cfd) { |
034c6ed7 LP |
786 | int r; |
787 | ||
788 | assert(s); | |
789 | ||
4f2d528d LP |
790 | if (cfd < 0) { |
791 | if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0) | |
792 | goto fail; | |
793 | ||
794 | socket_set_state(s, SOCKET_RUNNING); | |
795 | } else { | |
796 | Unit *u; | |
797 | char *prefix, *instance, *name; | |
798 | ||
799 | if ((r = instance_from_socket(cfd, s->n_accepted++, &instance))) | |
800 | goto fail; | |
801 | ||
802 | if (!(prefix = unit_name_to_prefix(UNIT(s)->meta.id))) { | |
803 | free(instance); | |
804 | r = -ENOMEM; | |
805 | goto fail; | |
806 | } | |
807 | ||
808 | name = unit_name_build(prefix, instance, ".service"); | |
809 | free(prefix); | |
810 | free(instance); | |
811 | ||
812 | if (!name) | |
813 | r = -ENOMEM; | |
814 | ||
815 | r = manager_load_unit(UNIT(s)->meta.manager, name, NULL, &u); | |
816 | free(name); | |
817 | ||
818 | if (r < 0) | |
819 | goto fail; | |
820 | ||
821 | if ((r = service_set_socket_fd(SERVICE(u), cfd) < 0)) | |
822 | goto fail; | |
823 | ||
824 | cfd = -1; | |
825 | ||
826 | if ((r = manager_add_job(u->meta.manager, JOB_START, u, JOB_REPLACE, true, NULL)) < 0) | |
827 | goto fail; | |
828 | } | |
034c6ed7 | 829 | |
034c6ed7 LP |
830 | return; |
831 | ||
832 | fail: | |
9e2f7c11 | 833 | log_warning("%s failed to queue socket startup job: %s", s->meta.id, strerror(-r)); |
80876c20 | 834 | socket_enter_stop_pre(s, false); |
4f2d528d LP |
835 | |
836 | if (cfd >= 0) | |
837 | close_nointr_nofail(cfd); | |
034c6ed7 LP |
838 | } |
839 | ||
840 | static void socket_run_next(Socket *s, bool success) { | |
841 | int r; | |
842 | ||
843 | assert(s); | |
844 | assert(s->control_command); | |
845 | assert(s->control_command->command_next); | |
846 | ||
847 | if (!success) | |
848 | s->failure = true; | |
849 | ||
5e94833f LP |
850 | socket_unwatch_control_pid(s); |
851 | ||
034c6ed7 LP |
852 | s->control_command = s->control_command->command_next; |
853 | ||
e537352b | 854 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
855 | goto fail; |
856 | ||
857 | return; | |
858 | ||
859 | fail: | |
9e2f7c11 | 860 | log_warning("%s failed to run spawn next executable: %s", s->meta.id, strerror(-r)); |
80876c20 LP |
861 | |
862 | if (s->state == SOCKET_START_POST) | |
863 | socket_enter_stop_pre(s, false); | |
034c6ed7 LP |
864 | else if (s->state == SOCKET_STOP_POST) |
865 | socket_enter_dead(s, false); | |
866 | else | |
80876c20 | 867 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
868 | } |
869 | ||
87f0e418 LP |
870 | static int socket_start(Unit *u) { |
871 | Socket *s = SOCKET(u); | |
83c60c9f LP |
872 | |
873 | assert(s); | |
874 | ||
034c6ed7 LP |
875 | /* We cannot fulfill this request right now, try again later |
876 | * please! */ | |
877 | if (s->state == SOCKET_STOP_PRE || | |
878 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
879 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
880 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
881 | s->state == SOCKET_FINAL_SIGTERM || |
882 | s->state == SOCKET_FINAL_SIGKILL) | |
034c6ed7 LP |
883 | return -EAGAIN; |
884 | ||
83c60c9f LP |
885 | if (s->state == SOCKET_START_PRE || |
886 | s->state == SOCKET_START_POST) | |
034c6ed7 | 887 | return 0; |
83c60c9f | 888 | |
034c6ed7 | 889 | /* Cannot run this without the service being around */ |
4f2d528d LP |
890 | if (s->service) { |
891 | if (s->service->meta.load_state != UNIT_LOADED) | |
892 | return -ENOENT; | |
893 | ||
894 | /* If the service is alredy actvie we cannot start the | |
895 | * socket */ | |
896 | if (s->service->state != SERVICE_DEAD && | |
897 | s->service->state != SERVICE_MAINTAINANCE && | |
898 | s->service->state != SERVICE_AUTO_RESTART) | |
899 | return -EBUSY; | |
900 | } | |
e537352b | 901 | |
034c6ed7 | 902 | assert(s->state == SOCKET_DEAD || s->state == SOCKET_MAINTAINANCE); |
83c60c9f | 903 | |
034c6ed7 LP |
904 | s->failure = false; |
905 | socket_enter_start_pre(s); | |
906 | return 0; | |
907 | } | |
83c60c9f | 908 | |
87f0e418 LP |
909 | static int socket_stop(Unit *u) { |
910 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
911 | |
912 | assert(s); | |
913 | ||
914 | /* We cannot fulfill this request right now, try again later | |
915 | * please! */ | |
916 | if (s->state == SOCKET_START_PRE || | |
917 | s->state == SOCKET_START_POST) | |
918 | return -EAGAIN; | |
83c60c9f | 919 | |
e537352b LP |
920 | /* Already on it */ |
921 | if (s->state == SOCKET_STOP_PRE || | |
922 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
923 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
924 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
925 | s->state == SOCKET_FINAL_SIGTERM || |
926 | s->state == SOCKET_FINAL_SIGTERM) | |
e537352b LP |
927 | return 0; |
928 | ||
034c6ed7 | 929 | assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING); |
83c60c9f | 930 | |
034c6ed7 | 931 | socket_enter_stop_pre(s, true); |
542563ba LP |
932 | return 0; |
933 | } | |
934 | ||
a16e1123 LP |
935 | static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { |
936 | Socket *s = SOCKET(u); | |
937 | SocketPort *p; | |
938 | int r; | |
939 | ||
940 | assert(u); | |
941 | assert(f); | |
942 | assert(fds); | |
943 | ||
944 | unit_serialize_item(u, f, "state", socket_state_to_string(s->state)); | |
945 | unit_serialize_item(u, f, "failure", yes_no(s->failure)); | |
946 | unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted); | |
947 | ||
948 | if (s->control_pid > 0) | |
949 | unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) s->control_pid); | |
950 | ||
951 | if (s->control_command_id >= 0) | |
952 | unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id)); | |
953 | ||
954 | LIST_FOREACH(port, p, s->ports) { | |
955 | int copy; | |
956 | ||
957 | if (p->fd < 0) | |
958 | continue; | |
959 | ||
960 | if ((copy = fdset_put_dup(fds, p->fd)) < 0) | |
961 | return copy; | |
962 | ||
963 | if (p->type == SOCKET_SOCKET) { | |
964 | char *t; | |
965 | ||
966 | if ((r = socket_address_print(&p->address, &t)) < 0) | |
967 | return r; | |
968 | ||
969 | unit_serialize_item_format(u, f, "socket", "%i %s", copy, t); | |
970 | free(t); | |
971 | } else { | |
972 | assert(p->type == SOCKET_FIFO); | |
973 | unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path); | |
974 | } | |
975 | } | |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
980 | static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
981 | Socket *s = SOCKET(u); | |
982 | int r; | |
983 | ||
984 | assert(u); | |
985 | assert(key); | |
986 | assert(value); | |
987 | assert(fds); | |
988 | ||
989 | if (streq(key, "state")) { | |
990 | SocketState state; | |
991 | ||
992 | if ((state = socket_state_from_string(value)) < 0) | |
993 | log_debug("Failed to parse state value %s", value); | |
994 | else | |
995 | s->deserialized_state = state; | |
996 | } else if (streq(key, "failure")) { | |
997 | int b; | |
998 | ||
999 | if ((b = parse_boolean(value)) < 0) | |
1000 | log_debug("Failed to parse failure value %s", value); | |
1001 | else | |
1002 | s->failure = b || s->failure; | |
1003 | ||
1004 | } else if (streq(key, "n-accepted")) { | |
1005 | unsigned k; | |
1006 | ||
1007 | if ((r = safe_atou(value, &k)) < 0) | |
1008 | log_debug("Failed to parse n-accepted value %s", value); | |
1009 | else | |
1010 | s->n_accepted += k; | |
1011 | } else if (streq(key, "control-pid")) { | |
1012 | unsigned pid; | |
1013 | ||
1014 | if ((r = safe_atou(value, &pid)) < 0 || pid <= 0) | |
1015 | log_debug("Failed to parse control-pid value %s", value); | |
1016 | else | |
1017 | s->control_pid = (pid_t) pid; | |
1018 | } else if (streq(key, "control-command")) { | |
1019 | SocketExecCommand id; | |
1020 | ||
1021 | if ((id = socket_exec_command_from_string(value)) < 0) | |
1022 | log_debug("Failed to parse exec-command value %s", value); | |
1023 | else { | |
1024 | s->control_command_id = id; | |
1025 | s->control_command = s->exec_command[id]; | |
1026 | } | |
1027 | } else if (streq(key, "fifo")) { | |
1028 | int fd, skip = 0; | |
1029 | SocketPort *p; | |
1030 | ||
1031 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1032 | log_debug("Failed to parse fifo value %s", value); | |
1033 | else { | |
1034 | ||
1035 | LIST_FOREACH(port, p, s->ports) | |
1036 | if (streq(p->path, value+skip)) | |
1037 | break; | |
1038 | ||
1039 | if (p) { | |
1040 | if (p->fd >= 0) | |
1041 | close_nointr_nofail(p->fd); | |
1042 | p->fd = fdset_remove(fds, fd); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | } else if (streq(key, "socket")) { | |
1047 | int fd, skip = 0; | |
1048 | SocketPort *p; | |
1049 | ||
1050 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1051 | log_debug("Failed to parse socket value %s", value); | |
1052 | else { | |
1053 | ||
1054 | LIST_FOREACH(port, p, s->ports) | |
1055 | if (socket_address_is(&p->address, value+skip)) | |
1056 | break; | |
1057 | ||
1058 | if (p) { | |
1059 | if (p->fd >= 0) | |
1060 | close_nointr_nofail(p->fd); | |
1061 | p->fd = fdset_remove(fds, fd); | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | } else | |
1066 | log_debug("Unknown serialization key '%s'", key); | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
87f0e418 LP |
1071 | static UnitActiveState socket_active_state(Unit *u) { |
1072 | assert(u); | |
5cb5a6ff | 1073 | |
acbb0225 | 1074 | return state_translation_table[SOCKET(u)->state]; |
5cb5a6ff LP |
1075 | } |
1076 | ||
10a94420 LP |
1077 | static const char *socket_sub_state_to_string(Unit *u) { |
1078 | assert(u); | |
1079 | ||
a16e1123 | 1080 | return socket_state_to_string(SOCKET(u)->state); |
10a94420 LP |
1081 | } |
1082 | ||
acbb0225 | 1083 | static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 | 1084 | Socket *s = SOCKET(u); |
4f2d528d | 1085 | int cfd = -1; |
9152c765 | 1086 | |
034c6ed7 | 1087 | assert(s); |
8d567588 | 1088 | assert(fd >= 0); |
9152c765 | 1089 | |
9e2f7c11 | 1090 | log_debug("Incoming traffic on %s", u->meta.id); |
9152c765 | 1091 | |
4f2d528d LP |
1092 | if (events != EPOLLIN) { |
1093 | log_error("Got invalid poll event on socket."); | |
8d567588 | 1094 | goto fail; |
4f2d528d LP |
1095 | } |
1096 | ||
cabab516 | 1097 | if (w->socket_accept) { |
4f2d528d LP |
1098 | for (;;) { |
1099 | ||
1100 | if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) { | |
1101 | ||
1102 | if (errno == EINTR) | |
1103 | continue; | |
1104 | ||
1105 | log_error("Failed to accept socket: %m"); | |
8d567588 | 1106 | goto fail; |
4f2d528d LP |
1107 | } |
1108 | ||
1109 | break; | |
1110 | } | |
1111 | } | |
9152c765 | 1112 | |
4f2d528d | 1113 | socket_enter_running(s, cfd); |
8d567588 LP |
1114 | return; |
1115 | ||
1116 | fail: | |
1117 | socket_enter_stop_pre(s, false); | |
9152c765 LP |
1118 | } |
1119 | ||
87f0e418 LP |
1120 | static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1121 | Socket *s = SOCKET(u); | |
034c6ed7 | 1122 | bool success; |
5cb5a6ff LP |
1123 | |
1124 | assert(s); | |
034c6ed7 | 1125 | assert(pid >= 0); |
5cb5a6ff | 1126 | |
bd982a8b | 1127 | success = code == CLD_EXITED && status == 0; |
034c6ed7 | 1128 | s->failure = s->failure || !success; |
542563ba | 1129 | |
034c6ed7 | 1130 | assert(s->control_pid == pid); |
034c6ed7 LP |
1131 | s->control_pid = 0; |
1132 | ||
a16e1123 LP |
1133 | if (s->control_command) |
1134 | exec_status_fill(&s->control_command->exec_status, pid, code, status); | |
1135 | ||
9e2f7c11 | 1136 | log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); |
034c6ed7 | 1137 | |
a16e1123 LP |
1138 | if (s->control_command && s->control_command->command_next && success) { |
1139 | log_debug("%s running next command for state %s", u->meta.id, socket_state_to_string(s->state)); | |
034c6ed7 | 1140 | socket_run_next(s, success); |
acbb0225 | 1141 | } else { |
a16e1123 LP |
1142 | s->control_command = NULL; |
1143 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
1144 | ||
034c6ed7 LP |
1145 | /* No further commands for this step, so let's figure |
1146 | * out what to do next */ | |
5cb5a6ff | 1147 | |
a16e1123 | 1148 | log_debug("%s got final SIGCHLD for state %s", u->meta.id, socket_state_to_string(s->state)); |
acbb0225 | 1149 | |
034c6ed7 LP |
1150 | switch (s->state) { |
1151 | ||
1152 | case SOCKET_START_PRE: | |
1153 | if (success) | |
acbb0225 | 1154 | socket_enter_start_post(s); |
034c6ed7 | 1155 | else |
80876c20 | 1156 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
1157 | break; |
1158 | ||
1159 | case SOCKET_START_POST: | |
1160 | if (success) | |
e9af15c3 | 1161 | socket_enter_listening(s); |
034c6ed7 LP |
1162 | else |
1163 | socket_enter_stop_pre(s, false); | |
1164 | break; | |
1165 | ||
1166 | case SOCKET_STOP_PRE: | |
1167 | case SOCKET_STOP_PRE_SIGTERM: | |
1168 | case SOCKET_STOP_PRE_SIGKILL: | |
1169 | socket_enter_stop_post(s, success); | |
1170 | break; | |
1171 | ||
1172 | case SOCKET_STOP_POST: | |
80876c20 LP |
1173 | case SOCKET_FINAL_SIGTERM: |
1174 | case SOCKET_FINAL_SIGKILL: | |
034c6ed7 LP |
1175 | socket_enter_dead(s, success); |
1176 | break; | |
1177 | ||
1178 | default: | |
1179 | assert_not_reached("Uh, control process died at wrong time."); | |
1180 | } | |
1181 | } | |
1182 | } | |
5cb5a6ff | 1183 | |
acbb0225 | 1184 | static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) { |
87f0e418 | 1185 | Socket *s = SOCKET(u); |
5cb5a6ff | 1186 | |
034c6ed7 LP |
1187 | assert(s); |
1188 | assert(elapsed == 1); | |
acbb0225 | 1189 | assert(w == &s->timer_watch); |
034c6ed7 LP |
1190 | |
1191 | switch (s->state) { | |
1192 | ||
1193 | case SOCKET_START_PRE: | |
9e2f7c11 | 1194 | log_warning("%s starting timed out. Terminating.", u->meta.id); |
80876c20 LP |
1195 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
1196 | ||
034c6ed7 | 1197 | case SOCKET_START_POST: |
9e2f7c11 | 1198 | log_warning("%s starting timed out. Stopping.", u->meta.id); |
034c6ed7 LP |
1199 | socket_enter_stop_pre(s, false); |
1200 | break; | |
1201 | ||
1202 | case SOCKET_STOP_PRE: | |
9e2f7c11 | 1203 | log_warning("%s stopping timed out. Terminating.", u->meta.id); |
034c6ed7 LP |
1204 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false); |
1205 | break; | |
1206 | ||
1207 | case SOCKET_STOP_PRE_SIGTERM: | |
9e2f7c11 | 1208 | log_warning("%s stopping timed out. Killing.", u->meta.id); |
034c6ed7 LP |
1209 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false); |
1210 | break; | |
1211 | ||
1212 | case SOCKET_STOP_PRE_SIGKILL: | |
9e2f7c11 | 1213 | log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id); |
034c6ed7 LP |
1214 | socket_enter_stop_post(s, false); |
1215 | break; | |
1216 | ||
1217 | case SOCKET_STOP_POST: | |
9e2f7c11 | 1218 | log_warning("%s stopping timed out (2). Terminating.", u->meta.id); |
80876c20 | 1219 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
1220 | break; |
1221 | ||
80876c20 | 1222 | case SOCKET_FINAL_SIGTERM: |
9e2f7c11 | 1223 | log_warning("%s stopping timed out (2). Killing.", u->meta.id); |
80876c20 | 1224 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false); |
034c6ed7 LP |
1225 | break; |
1226 | ||
80876c20 | 1227 | case SOCKET_FINAL_SIGKILL: |
9e2f7c11 | 1228 | log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id); |
034c6ed7 LP |
1229 | socket_enter_dead(s, false); |
1230 | break; | |
1231 | ||
1232 | default: | |
1233 | assert_not_reached("Timeout at wrong time."); | |
1234 | } | |
5cb5a6ff LP |
1235 | } |
1236 | ||
44d8db9e LP |
1237 | int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { |
1238 | int *rfds; | |
1239 | unsigned rn_fds, k; | |
1240 | SocketPort *p; | |
1241 | ||
1242 | assert(s); | |
1243 | assert(fds); | |
1244 | assert(n_fds); | |
1245 | ||
1246 | /* Called from the service code for requesting our fds */ | |
1247 | ||
1248 | rn_fds = 0; | |
1249 | LIST_FOREACH(port, p, s->ports) | |
1250 | if (p->fd >= 0) | |
1251 | rn_fds++; | |
1252 | ||
1253 | if (!(rfds = new(int, rn_fds)) < 0) | |
1254 | return -ENOMEM; | |
1255 | ||
1256 | k = 0; | |
1257 | LIST_FOREACH(port, p, s->ports) | |
1258 | if (p->fd >= 0) | |
1259 | rfds[k++] = p->fd; | |
1260 | ||
1261 | assert(k == rn_fds); | |
1262 | ||
1263 | *fds = rfds; | |
1264 | *n_fds = rn_fds; | |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
ceee3d82 LP |
1269 | void socket_notify_service_dead(Socket *s) { |
1270 | assert(s); | |
1271 | ||
1272 | /* The service is dead. Dang. */ | |
1273 | ||
1274 | if (s->state == SOCKET_RUNNING) { | |
9e2f7c11 | 1275 | log_debug("%s got notified about service death.", s->meta.id); |
ceee3d82 LP |
1276 | socket_enter_listening(s); |
1277 | } | |
1278 | } | |
1279 | ||
a16e1123 LP |
1280 | static const char* const socket_state_table[_SOCKET_STATE_MAX] = { |
1281 | [SOCKET_DEAD] = "dead", | |
1282 | [SOCKET_START_PRE] = "start-pre", | |
1283 | [SOCKET_START_POST] = "start-post", | |
1284 | [SOCKET_LISTENING] = "listening", | |
1285 | [SOCKET_RUNNING] = "running", | |
1286 | [SOCKET_STOP_PRE] = "stop-pre", | |
1287 | [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm", | |
1288 | [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill", | |
1289 | [SOCKET_STOP_POST] = "stop-post", | |
1290 | [SOCKET_FINAL_SIGTERM] = "final-sigterm", | |
1291 | [SOCKET_FINAL_SIGKILL] = "final-sigkill", | |
1292 | [SOCKET_MAINTAINANCE] = "maintainance" | |
1293 | }; | |
1294 | ||
1295 | DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState); | |
1296 | ||
1297 | static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = { | |
1298 | [SOCKET_EXEC_START_PRE] = "StartPre", | |
1299 | [SOCKET_EXEC_START_POST] = "StartPost", | |
1300 | [SOCKET_EXEC_STOP_PRE] = "StopPre", | |
1301 | [SOCKET_EXEC_STOP_POST] = "StopPost" | |
1302 | }; | |
1303 | ||
1304 | DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand); | |
1305 | ||
87f0e418 | 1306 | const UnitVTable socket_vtable = { |
5cb5a6ff LP |
1307 | .suffix = ".socket", |
1308 | ||
034c6ed7 LP |
1309 | .init = socket_init, |
1310 | .done = socket_done, | |
a16e1123 LP |
1311 | .load = socket_load, |
1312 | ||
1313 | .coldplug = socket_coldplug, | |
034c6ed7 | 1314 | |
5cb5a6ff LP |
1315 | .dump = socket_dump, |
1316 | ||
542563ba LP |
1317 | .start = socket_start, |
1318 | .stop = socket_stop, | |
5cb5a6ff | 1319 | |
a16e1123 LP |
1320 | .serialize = socket_serialize, |
1321 | .deserialize_item = socket_deserialize_item, | |
1322 | ||
5cb5a6ff | 1323 | .active_state = socket_active_state, |
10a94420 | 1324 | .sub_state_to_string = socket_sub_state_to_string, |
5cb5a6ff | 1325 | |
9152c765 | 1326 | .fd_event = socket_fd_event, |
034c6ed7 | 1327 | .sigchld_event = socket_sigchld_event, |
4139c1b2 LP |
1328 | .timer_event = socket_timer_event, |
1329 | ||
1330 | .bus_message_handler = bus_socket_message_handler | |
5cb5a6ff | 1331 | }; |