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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 | ||
6e2ef85b LP |
148 | static bool socket_needs_mount(Socket *s, const char *prefix) { |
149 | SocketPort *p; | |
150 | ||
151 | assert(s); | |
152 | ||
153 | LIST_FOREACH(port, p, s->ports) { | |
154 | ||
155 | if (p->type == SOCKET_SOCKET) { | |
156 | if (socket_address_needs_mount(&p->address, prefix)) | |
157 | return true; | |
158 | } else { | |
159 | assert(p->type == SOCKET_FIFO); | |
160 | if (path_startswith(p->path, prefix)) | |
161 | return true; | |
162 | } | |
163 | } | |
164 | ||
165 | return false; | |
166 | } | |
167 | ||
168 | int socket_add_one_mount_link(Socket *s, Mount *m) { | |
169 | int r; | |
170 | ||
171 | assert(s); | |
172 | assert(m); | |
173 | ||
174 | if (s->meta.load_state != UNIT_LOADED || | |
175 | m->meta.load_state != UNIT_LOADED) | |
176 | return 0; | |
177 | ||
178 | if (!socket_needs_mount(s, m->where)) | |
179 | return 0; | |
180 | ||
181 | if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(s), true)) < 0) | |
182 | return r; | |
183 | ||
184 | if ((r = unit_add_dependency(UNIT(s), UNIT_REQUIRES, UNIT(m), true)) < 0) | |
185 | return r; | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int socket_add_mount_links(Socket *s) { | |
191 | Meta *other; | |
192 | int r; | |
193 | ||
194 | assert(s); | |
195 | ||
196 | LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_MOUNT]) | |
197 | if ((r = socket_add_one_mount_link(s, (Mount*) other)) < 0) | |
198 | return r; | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static int socket_add_device_link(Socket *s) { | |
204 | char *t; | |
205 | int r; | |
206 | ||
207 | assert(s); | |
208 | ||
209 | if (!s->bind_to_device) | |
210 | return 0; | |
211 | ||
212 | if (asprintf(&t, "/sys/subsystem/net/devices/%s", s->bind_to_device) < 0) | |
213 | return -ENOMEM; | |
214 | ||
215 | r = unit_add_node_link(UNIT(s), t, false); | |
216 | free(t); | |
217 | ||
218 | return r; | |
219 | } | |
220 | ||
e537352b LP |
221 | static int socket_load(Unit *u) { |
222 | Socket *s = SOCKET(u); | |
223 | int r; | |
44d8db9e | 224 | |
e537352b LP |
225 | assert(u); |
226 | assert(u->meta.load_state == UNIT_STUB); | |
44d8db9e | 227 | |
e537352b | 228 | if ((r = unit_load_fragment_and_dropin(u)) < 0) |
23a177ef | 229 | return r; |
44d8db9e | 230 | |
23a177ef | 231 | /* This is a new unit? Then let's add in some extras */ |
e537352b | 232 | if (u->meta.load_state == UNIT_LOADED) { |
44d8db9e | 233 | |
4f2d528d LP |
234 | if (have_non_accept_socket(s)) { |
235 | if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service))) | |
236 | return r; | |
23a177ef | 237 | |
701cc384 | 238 | if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service), true)) < 0) |
4f2d528d LP |
239 | return r; |
240 | } | |
44d8db9e | 241 | |
6e2ef85b LP |
242 | if ((r = socket_add_mount_links(s)) < 0) |
243 | return r; | |
244 | ||
245 | if ((r = socket_add_device_link(s)) < 0) | |
246 | return r; | |
247 | ||
23a177ef LP |
248 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) |
249 | return r; | |
250 | ||
251 | if ((r = unit_add_default_cgroup(u)) < 0) | |
252 | return r; | |
253 | } | |
254 | ||
4f2d528d | 255 | return socket_verify(s); |
44d8db9e LP |
256 | } |
257 | ||
542563ba LP |
258 | static const char* listen_lookup(int type) { |
259 | ||
260 | if (type == SOCK_STREAM) | |
261 | return "ListenStream"; | |
262 | else if (type == SOCK_DGRAM) | |
263 | return "ListenDatagram"; | |
264 | else if (type == SOCK_SEQPACKET) | |
265 | return "ListenSequentialPacket"; | |
266 | ||
034c6ed7 | 267 | assert_not_reached("Unknown socket type"); |
542563ba LP |
268 | return NULL; |
269 | } | |
270 | ||
87f0e418 | 271 | static void socket_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 272 | |
5cb5a6ff | 273 | SocketExecCommand c; |
87f0e418 | 274 | Socket *s = SOCKET(u); |
542563ba | 275 | SocketPort *p; |
82ba9f08 LP |
276 | const char *prefix2; |
277 | char *p2; | |
5cb5a6ff LP |
278 | |
279 | assert(s); | |
fa068367 | 280 | assert(f); |
5cb5a6ff | 281 | |
82ba9f08 LP |
282 | p2 = strappend(prefix, "\t"); |
283 | prefix2 = p2 ? p2 : prefix; | |
c43d20a0 | 284 | |
5cb5a6ff LP |
285 | fprintf(f, |
286 | "%sSocket State: %s\n" | |
542563ba | 287 | "%sBindIPv6Only: %s\n" |
b5a0699f | 288 | "%sBacklog: %u\n" |
50159e6a | 289 | "%sKillMode: %s\n" |
b5a0699f LP |
290 | "%sSocketMode: %04o\n" |
291 | "%sDirectoryMode: %04o\n", | |
a16e1123 | 292 | prefix, socket_state_to_string(s->state), |
c0120d99 | 293 | prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only), |
b5a0699f | 294 | prefix, s->backlog, |
50159e6a | 295 | prefix, kill_mode_to_string(s->kill_mode), |
b5a0699f LP |
296 | prefix, s->socket_mode, |
297 | prefix, s->directory_mode); | |
542563ba | 298 | |
70123e68 LP |
299 | if (s->control_pid > 0) |
300 | fprintf(f, | |
301 | "%sControl PID: %llu\n", | |
302 | prefix, (unsigned long long) s->control_pid); | |
303 | ||
acbb0225 LP |
304 | if (s->bind_to_device) |
305 | fprintf(f, | |
306 | "%sBindToDevice: %s\n", | |
307 | prefix, s->bind_to_device); | |
308 | ||
4f2d528d LP |
309 | if (s->accept) |
310 | fprintf(f, | |
311 | "%sAccepted: %u\n", | |
312 | prefix, s->n_accepted); | |
313 | ||
034c6ed7 | 314 | LIST_FOREACH(port, p, s->ports) { |
5cb5a6ff | 315 | |
542563ba LP |
316 | if (p->type == SOCKET_SOCKET) { |
317 | const char *t; | |
318 | int r; | |
319 | char *k; | |
320 | ||
321 | if ((r = socket_address_print(&p->address, &k)) < 0) | |
322 | t = strerror(-r); | |
323 | else | |
324 | t = k; | |
325 | ||
326 | fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), k); | |
327 | free(k); | |
328 | } else | |
329 | fprintf(f, "%sListenFIFO: %s\n", prefix, p->path); | |
330 | } | |
5cb5a6ff LP |
331 | |
332 | exec_context_dump(&s->exec_context, f, prefix); | |
333 | ||
e537352b | 334 | for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) { |
c43d20a0 LP |
335 | if (!s->exec_command[c]) |
336 | continue; | |
5cb5a6ff | 337 | |
40d50879 | 338 | fprintf(f, "%s-> %s:\n", |
a16e1123 | 339 | prefix, socket_exec_command_to_string(c)); |
c43d20a0 LP |
340 | |
341 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 342 | } |
c43d20a0 | 343 | |
82ba9f08 | 344 | free(p2); |
5cb5a6ff LP |
345 | } |
346 | ||
4f2d528d LP |
347 | static int instance_from_socket(int fd, unsigned nr, char **instance) { |
348 | socklen_t l; | |
349 | char *r; | |
350 | union { | |
351 | struct sockaddr sa; | |
352 | struct sockaddr_un un; | |
353 | struct sockaddr_in in; | |
354 | struct sockaddr_in6 in6; | |
355 | struct sockaddr_storage storage; | |
356 | } local, remote; | |
357 | ||
358 | assert(fd >= 0); | |
359 | assert(instance); | |
360 | ||
361 | l = sizeof(local); | |
362 | if (getsockname(fd, &local.sa, &l) < 0) | |
363 | return -errno; | |
364 | ||
365 | l = sizeof(remote); | |
366 | if (getpeername(fd, &remote.sa, &l) < 0) | |
367 | return -errno; | |
368 | ||
369 | switch (local.sa.sa_family) { | |
370 | ||
371 | case AF_INET: { | |
372 | uint32_t | |
373 | a = ntohl(local.in.sin_addr.s_addr), | |
374 | b = ntohl(remote.in.sin_addr.s_addr); | |
375 | ||
376 | if (asprintf(&r, | |
a16e1123 | 377 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
4f2d528d LP |
378 | nr, |
379 | a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF, | |
380 | ntohs(local.in.sin_port), | |
381 | b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF, | |
382 | ntohs(remote.in.sin_port)) < 0) | |
383 | return -ENOMEM; | |
384 | ||
385 | break; | |
386 | } | |
387 | ||
388 | case AF_INET6: { | |
2b061f5a LP |
389 | static const char ipv4_prefix[] = { |
390 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF | |
391 | }; | |
392 | ||
393 | if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 && | |
394 | memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) { | |
395 | const uint8_t | |
396 | *a = local.in6.sin6_addr.s6_addr+12, | |
397 | *b = remote.in6.sin6_addr.s6_addr+12; | |
398 | ||
399 | if (asprintf(&r, | |
400 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", | |
401 | nr, | |
402 | a[0], a[1], a[2], a[3], | |
403 | ntohs(local.in6.sin6_port), | |
404 | b[0], b[1], b[2], b[3], | |
405 | ntohs(remote.in6.sin6_port)) < 0) | |
406 | return -ENOMEM; | |
407 | } else { | |
408 | char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN]; | |
409 | ||
410 | if (asprintf(&r, | |
411 | "%u-%s:%u-%s:%u", | |
412 | nr, | |
413 | inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)), | |
414 | ntohs(local.in6.sin6_port), | |
415 | inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)), | |
416 | ntohs(remote.in6.sin6_port)) < 0) | |
417 | return -ENOMEM; | |
418 | } | |
4f2d528d LP |
419 | |
420 | break; | |
421 | } | |
422 | ||
423 | case AF_UNIX: { | |
424 | struct ucred ucred; | |
425 | ||
426 | l = sizeof(ucred); | |
427 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) | |
428 | return -errno; | |
429 | ||
430 | if (asprintf(&r, | |
431 | "%u-%llu-%llu", | |
432 | nr, | |
433 | (unsigned long long) ucred.pid, | |
434 | (unsigned long long) ucred.uid) < 0) | |
435 | return -ENOMEM; | |
436 | ||
437 | break; | |
438 | } | |
439 | ||
440 | default: | |
441 | assert_not_reached("Unhandled socket type."); | |
442 | } | |
443 | ||
444 | *instance = r; | |
445 | return 0; | |
446 | } | |
447 | ||
034c6ed7 | 448 | static void socket_close_fds(Socket *s) { |
83c60c9f LP |
449 | SocketPort *p; |
450 | ||
451 | assert(s); | |
452 | ||
034c6ed7 | 453 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f LP |
454 | if (p->fd < 0) |
455 | continue; | |
456 | ||
acbb0225 | 457 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
a16e1123 LP |
458 | close_nointr_nofail(p->fd); |
459 | ||
460 | /* One little note: we should never delete any sockets | |
461 | * in the file system here! After all some other | |
462 | * process we spawned might still have a reference of | |
463 | * this fd and wants to continue to use it. Therefore | |
464 | * we delete sockets in the file system before we | |
465 | * create a new one, not after we stopped using | |
466 | * one! */ | |
9152c765 | 467 | |
83c60c9f LP |
468 | p->fd = -1; |
469 | } | |
470 | } | |
471 | ||
034c6ed7 | 472 | static int socket_open_fds(Socket *s) { |
83c60c9f LP |
473 | SocketPort *p; |
474 | int r; | |
475 | ||
476 | assert(s); | |
477 | ||
034c6ed7 | 478 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f | 479 | |
034c6ed7 LP |
480 | if (p->fd >= 0) |
481 | continue; | |
83c60c9f LP |
482 | |
483 | if (p->type == SOCKET_SOCKET) { | |
484 | ||
b5a0699f LP |
485 | if ((r = socket_address_listen( |
486 | &p->address, | |
487 | s->backlog, | |
488 | s->bind_ipv6_only, | |
489 | s->bind_to_device, | |
490 | s->directory_mode, | |
491 | s->socket_mode, | |
492 | &p->fd)) < 0) | |
83c60c9f LP |
493 | goto rollback; |
494 | ||
495 | } else { | |
496 | struct stat st; | |
497 | assert(p->type == SOCKET_FIFO); | |
498 | ||
8cb45bf8 LP |
499 | mkdir_parents(p->path, s->directory_mode); |
500 | ||
501 | if (mkfifo(p->path, s->socket_mode) < 0 && errno != EEXIST) { | |
83c60c9f LP |
502 | r = -errno; |
503 | goto rollback; | |
504 | } | |
505 | ||
506 | if ((p->fd = open(p->path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) { | |
507 | r = -errno; | |
508 | goto rollback; | |
509 | } | |
510 | ||
511 | if (fstat(p->fd, &st) < 0) { | |
512 | r = -errno; | |
513 | goto rollback; | |
514 | } | |
515 | ||
516 | /* FIXME verify user, access mode */ | |
517 | ||
518 | if (!S_ISFIFO(st.st_mode)) { | |
519 | r = -EEXIST; | |
520 | goto rollback; | |
521 | } | |
522 | } | |
034c6ed7 LP |
523 | } |
524 | ||
525 | return 0; | |
526 | ||
527 | rollback: | |
528 | socket_close_fds(s); | |
529 | return r; | |
530 | } | |
531 | ||
532 | static void socket_unwatch_fds(Socket *s) { | |
533 | SocketPort *p; | |
9152c765 | 534 | |
034c6ed7 LP |
535 | assert(s); |
536 | ||
537 | LIST_FOREACH(port, p, s->ports) { | |
538 | if (p->fd < 0) | |
539 | continue; | |
540 | ||
acbb0225 | 541 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
83c60c9f | 542 | } |
034c6ed7 LP |
543 | } |
544 | ||
545 | static int socket_watch_fds(Socket *s) { | |
546 | SocketPort *p; | |
547 | int r; | |
548 | ||
549 | assert(s); | |
83c60c9f | 550 | |
034c6ed7 LP |
551 | LIST_FOREACH(port, p, s->ports) { |
552 | if (p->fd < 0) | |
553 | continue; | |
554 | ||
cabab516 | 555 | p->fd_watch.socket_accept = |
4f2d528d | 556 | s->accept && |
dd5ad9d4 | 557 | p->type == SOCKET_SOCKET && |
4f2d528d LP |
558 | socket_address_can_accept(&p->address); |
559 | ||
f94ea366 | 560 | if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0) |
034c6ed7 LP |
561 | goto fail; |
562 | } | |
83c60c9f | 563 | |
542563ba | 564 | return 0; |
83c60c9f | 565 | |
034c6ed7 LP |
566 | fail: |
567 | socket_unwatch_fds(s); | |
568 | return r; | |
569 | } | |
570 | ||
571 | static void socket_set_state(Socket *s, SocketState state) { | |
572 | SocketState old_state; | |
573 | assert(s); | |
574 | ||
575 | old_state = s->state; | |
576 | s->state = state; | |
577 | ||
578 | if (state != SOCKET_START_PRE && | |
579 | state != SOCKET_START_POST && | |
580 | state != SOCKET_STOP_PRE && | |
581 | state != SOCKET_STOP_PRE_SIGTERM && | |
582 | state != SOCKET_STOP_PRE_SIGKILL && | |
583 | state != SOCKET_STOP_POST && | |
80876c20 LP |
584 | state != SOCKET_FINAL_SIGTERM && |
585 | state != SOCKET_FINAL_SIGKILL) { | |
acbb0225 | 586 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
5e94833f | 587 | socket_unwatch_control_pid(s); |
034c6ed7 | 588 | s->control_command = NULL; |
a16e1123 | 589 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
e537352b | 590 | } |
034c6ed7 | 591 | |
a16e1123 LP |
592 | if (state != SOCKET_LISTENING) |
593 | socket_unwatch_fds(s); | |
594 | ||
034c6ed7 LP |
595 | if (state != SOCKET_START_POST && |
596 | state != SOCKET_LISTENING && | |
597 | state != SOCKET_RUNNING && | |
598 | state != SOCKET_STOP_PRE && | |
599 | state != SOCKET_STOP_PRE_SIGTERM && | |
600 | state != SOCKET_STOP_PRE_SIGKILL) | |
601 | socket_close_fds(s); | |
602 | ||
e537352b | 603 | if (state != old_state) |
40d50879 | 604 | log_debug("%s changed %s -> %s", |
a16e1123 LP |
605 | s->meta.id, |
606 | socket_state_to_string(old_state), | |
607 | socket_state_to_string(state)); | |
acbb0225 LP |
608 | |
609 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); | |
034c6ed7 LP |
610 | } |
611 | ||
a16e1123 LP |
612 | static int socket_coldplug(Unit *u) { |
613 | Socket *s = SOCKET(u); | |
614 | int r; | |
615 | ||
616 | assert(s); | |
617 | assert(s->state == SOCKET_DEAD); | |
618 | ||
619 | if (s->deserialized_state != s->state) { | |
620 | ||
621 | if (s->deserialized_state == SOCKET_START_PRE || | |
622 | s->deserialized_state == SOCKET_START_POST || | |
623 | s->deserialized_state == SOCKET_STOP_PRE || | |
624 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
625 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL || | |
626 | s->deserialized_state == SOCKET_STOP_POST || | |
627 | s->deserialized_state == SOCKET_FINAL_SIGTERM || | |
628 | s->deserialized_state == SOCKET_FINAL_SIGKILL) { | |
629 | ||
630 | if (s->control_pid <= 0) | |
631 | return -EBADMSG; | |
632 | ||
633 | if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) | |
634 | return r; | |
635 | ||
636 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
637 | return r; | |
638 | } | |
639 | ||
640 | if (s->deserialized_state == SOCKET_START_POST || | |
641 | s->deserialized_state == SOCKET_LISTENING || | |
642 | s->deserialized_state == SOCKET_RUNNING || | |
643 | s->deserialized_state == SOCKET_STOP_PRE || | |
644 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
645 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) | |
646 | if ((r = socket_open_fds(s)) < 0) | |
647 | return r; | |
648 | ||
649 | if (s->deserialized_state == SOCKET_LISTENING) | |
650 | if ((r = socket_watch_fds(s)) < 0) | |
651 | return r; | |
652 | ||
653 | socket_set_state(s, s->deserialized_state); | |
654 | } | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
e537352b | 659 | static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { |
034c6ed7 LP |
660 | pid_t pid; |
661 | int r; | |
9e2f7c11 | 662 | char **argv; |
034c6ed7 LP |
663 | |
664 | assert(s); | |
665 | assert(c); | |
666 | assert(_pid); | |
667 | ||
e537352b LP |
668 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
669 | goto fail; | |
034c6ed7 | 670 | |
9e2f7c11 LP |
671 | if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { |
672 | r = -ENOMEM; | |
673 | goto fail; | |
674 | } | |
675 | ||
676 | r = exec_spawn(c, | |
677 | argv, | |
678 | &s->exec_context, | |
679 | NULL, 0, | |
1137a57c | 680 | s->meta.manager->environment, |
9e2f7c11 LP |
681 | true, |
682 | true, | |
683 | UNIT(s)->meta.manager->confirm_spawn, | |
684 | UNIT(s)->meta.cgroup_bondings, | |
685 | &pid); | |
686 | ||
687 | strv_free(argv); | |
688 | if (r < 0) | |
034c6ed7 LP |
689 | goto fail; |
690 | ||
87f0e418 | 691 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) |
034c6ed7 LP |
692 | /* FIXME: we need to do something here */ |
693 | goto fail; | |
83c60c9f | 694 | |
034c6ed7 LP |
695 | *_pid = pid; |
696 | ||
697 | return 0; | |
698 | ||
699 | fail: | |
e537352b | 700 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
83c60c9f LP |
701 | |
702 | return r; | |
542563ba LP |
703 | } |
704 | ||
034c6ed7 LP |
705 | static void socket_enter_dead(Socket *s, bool success) { |
706 | assert(s); | |
707 | ||
708 | if (!success) | |
709 | s->failure = true; | |
710 | ||
711 | socket_set_state(s, s->failure ? SOCKET_MAINTAINANCE : SOCKET_DEAD); | |
712 | } | |
713 | ||
80876c20 LP |
714 | static void socket_enter_signal(Socket *s, SocketState state, bool success); |
715 | ||
034c6ed7 LP |
716 | static void socket_enter_stop_post(Socket *s, bool success) { |
717 | int r; | |
718 | assert(s); | |
719 | ||
720 | if (!success) | |
721 | s->failure = true; | |
722 | ||
5e94833f LP |
723 | socket_unwatch_control_pid(s); |
724 | ||
a16e1123 LP |
725 | s->control_command_id = SOCKET_EXEC_STOP_POST; |
726 | ||
80876c20 | 727 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) { |
e537352b | 728 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
729 | goto fail; |
730 | ||
80876c20 LP |
731 | socket_set_state(s, SOCKET_STOP_POST); |
732 | } else | |
733 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true); | |
034c6ed7 LP |
734 | |
735 | return; | |
736 | ||
737 | fail: | |
9e2f7c11 | 738 | log_warning("%s failed to run stop-post executable: %s", s->meta.id, strerror(-r)); |
80876c20 | 739 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
740 | } |
741 | ||
742 | static void socket_enter_signal(Socket *s, SocketState state, bool success) { | |
743 | int r; | |
80876c20 | 744 | bool sent = false; |
034c6ed7 LP |
745 | |
746 | assert(s); | |
747 | ||
748 | if (!success) | |
749 | s->failure = true; | |
750 | ||
80876c20 LP |
751 | if (s->kill_mode != KILL_NONE) { |
752 | int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? SIGTERM : SIGKILL; | |
034c6ed7 | 753 | |
50159e6a LP |
754 | if (s->kill_mode == KILL_CONTROL_GROUP) { |
755 | ||
756 | if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) { | |
757 | if (r != -EAGAIN && r != -ESRCH) | |
758 | goto fail; | |
759 | } else | |
760 | sent = true; | |
034c6ed7 | 761 | } |
50159e6a | 762 | |
80876c20 | 763 | if (!sent && s->control_pid > 0) |
50159e6a LP |
764 | if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) { |
765 | r = -errno; | |
766 | goto fail; | |
767 | } | |
d6ea93e3 | 768 | } |
034c6ed7 | 769 | |
e93bc5a6 | 770 | if (sent && s->control_pid > 0) { |
80876c20 LP |
771 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
772 | goto fail; | |
d6ea93e3 | 773 | |
80876c20 LP |
774 | socket_set_state(s, state); |
775 | } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
776 | socket_enter_stop_post(s, true); | |
777 | else | |
034c6ed7 LP |
778 | socket_enter_dead(s, true); |
779 | ||
780 | return; | |
781 | ||
782 | fail: | |
9e2f7c11 | 783 | log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
784 | |
785 | if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
786 | socket_enter_stop_post(s, false); | |
787 | else | |
788 | socket_enter_dead(s, false); | |
789 | } | |
790 | ||
791 | static void socket_enter_stop_pre(Socket *s, bool success) { | |
792 | int r; | |
793 | assert(s); | |
794 | ||
795 | if (!success) | |
796 | s->failure = true; | |
797 | ||
5e94833f LP |
798 | socket_unwatch_control_pid(s); |
799 | ||
a16e1123 LP |
800 | s->control_command_id = SOCKET_EXEC_STOP_PRE; |
801 | ||
80876c20 | 802 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) { |
e537352b | 803 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
804 | goto fail; |
805 | ||
80876c20 LP |
806 | socket_set_state(s, SOCKET_STOP_PRE); |
807 | } else | |
034c6ed7 LP |
808 | socket_enter_stop_post(s, true); |
809 | ||
810 | return; | |
811 | ||
812 | fail: | |
9e2f7c11 | 813 | log_warning("%s failed to run stop-pre executable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
814 | socket_enter_stop_post(s, false); |
815 | } | |
816 | ||
e9af15c3 LP |
817 | static void socket_enter_listening(Socket *s) { |
818 | int r; | |
819 | assert(s); | |
820 | ||
821 | if ((r = socket_watch_fds(s)) < 0) { | |
9e2f7c11 | 822 | log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r)); |
e9af15c3 LP |
823 | goto fail; |
824 | } | |
825 | ||
826 | socket_set_state(s, SOCKET_LISTENING); | |
827 | return; | |
828 | ||
829 | fail: | |
830 | socket_enter_stop_pre(s, false); | |
831 | } | |
832 | ||
034c6ed7 LP |
833 | static void socket_enter_start_post(Socket *s) { |
834 | int r; | |
835 | assert(s); | |
836 | ||
e9af15c3 | 837 | if ((r = socket_open_fds(s)) < 0) { |
9e2f7c11 | 838 | log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
839 | goto fail; |
840 | } | |
841 | ||
5e94833f LP |
842 | socket_unwatch_control_pid(s); |
843 | ||
a16e1123 LP |
844 | s->control_command_id = SOCKET_EXEC_START_POST; |
845 | ||
80876c20 | 846 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) { |
e537352b | 847 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) { |
9e2f7c11 | 848 | log_warning("%s failed to run start-post executable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
849 | goto fail; |
850 | } | |
851 | ||
80876c20 LP |
852 | socket_set_state(s, SOCKET_START_POST); |
853 | } else | |
e9af15c3 | 854 | socket_enter_listening(s); |
034c6ed7 LP |
855 | |
856 | return; | |
857 | ||
858 | fail: | |
859 | socket_enter_stop_pre(s, false); | |
860 | } | |
861 | ||
862 | static void socket_enter_start_pre(Socket *s) { | |
863 | int r; | |
864 | assert(s); | |
865 | ||
5e94833f LP |
866 | socket_unwatch_control_pid(s); |
867 | ||
a16e1123 LP |
868 | s->control_command_id = SOCKET_EXEC_START_PRE; |
869 | ||
80876c20 | 870 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) { |
e537352b | 871 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
872 | goto fail; |
873 | ||
80876c20 LP |
874 | socket_set_state(s, SOCKET_START_PRE); |
875 | } else | |
034c6ed7 LP |
876 | socket_enter_start_post(s); |
877 | ||
878 | return; | |
879 | ||
880 | fail: | |
9e2f7c11 | 881 | log_warning("%s failed to run start-pre exectuable: %s", s->meta.id, strerror(-r)); |
034c6ed7 LP |
882 | socket_enter_dead(s, false); |
883 | } | |
884 | ||
4f2d528d | 885 | static void socket_enter_running(Socket *s, int cfd) { |
034c6ed7 LP |
886 | int r; |
887 | ||
888 | assert(s); | |
889 | ||
4f2d528d LP |
890 | if (cfd < 0) { |
891 | if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0) | |
892 | goto fail; | |
893 | ||
894 | socket_set_state(s, SOCKET_RUNNING); | |
895 | } else { | |
896 | Unit *u; | |
897 | char *prefix, *instance, *name; | |
898 | ||
b6dbbe1c | 899 | if ((r = instance_from_socket(cfd, s->n_accepted++, &instance)) < 0) |
4f2d528d LP |
900 | goto fail; |
901 | ||
902 | if (!(prefix = unit_name_to_prefix(UNIT(s)->meta.id))) { | |
903 | free(instance); | |
904 | r = -ENOMEM; | |
905 | goto fail; | |
906 | } | |
907 | ||
908 | name = unit_name_build(prefix, instance, ".service"); | |
909 | free(prefix); | |
910 | free(instance); | |
911 | ||
b6dbbe1c | 912 | if (!name) { |
4f2d528d | 913 | r = -ENOMEM; |
b6dbbe1c LP |
914 | goto fail; |
915 | } | |
4f2d528d LP |
916 | |
917 | r = manager_load_unit(UNIT(s)->meta.manager, name, NULL, &u); | |
918 | free(name); | |
919 | ||
920 | if (r < 0) | |
921 | goto fail; | |
922 | ||
b6dbbe1c | 923 | if ((r = service_set_socket_fd(SERVICE(u), cfd)) < 0) |
4f2d528d LP |
924 | goto fail; |
925 | ||
926 | cfd = -1; | |
927 | ||
928 | if ((r = manager_add_job(u->meta.manager, JOB_START, u, JOB_REPLACE, true, NULL)) < 0) | |
929 | goto fail; | |
930 | } | |
034c6ed7 | 931 | |
034c6ed7 LP |
932 | return; |
933 | ||
934 | fail: | |
9e2f7c11 | 935 | log_warning("%s failed to queue socket startup job: %s", s->meta.id, strerror(-r)); |
80876c20 | 936 | socket_enter_stop_pre(s, false); |
4f2d528d LP |
937 | |
938 | if (cfd >= 0) | |
939 | close_nointr_nofail(cfd); | |
034c6ed7 LP |
940 | } |
941 | ||
942 | static void socket_run_next(Socket *s, bool success) { | |
943 | int r; | |
944 | ||
945 | assert(s); | |
946 | assert(s->control_command); | |
947 | assert(s->control_command->command_next); | |
948 | ||
949 | if (!success) | |
950 | s->failure = true; | |
951 | ||
5e94833f LP |
952 | socket_unwatch_control_pid(s); |
953 | ||
034c6ed7 LP |
954 | s->control_command = s->control_command->command_next; |
955 | ||
e537352b | 956 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
957 | goto fail; |
958 | ||
959 | return; | |
960 | ||
961 | fail: | |
9e2f7c11 | 962 | log_warning("%s failed to run spawn next executable: %s", s->meta.id, strerror(-r)); |
80876c20 LP |
963 | |
964 | if (s->state == SOCKET_START_POST) | |
965 | socket_enter_stop_pre(s, false); | |
034c6ed7 LP |
966 | else if (s->state == SOCKET_STOP_POST) |
967 | socket_enter_dead(s, false); | |
968 | else | |
80876c20 | 969 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
970 | } |
971 | ||
87f0e418 LP |
972 | static int socket_start(Unit *u) { |
973 | Socket *s = SOCKET(u); | |
83c60c9f LP |
974 | |
975 | assert(s); | |
976 | ||
034c6ed7 LP |
977 | /* We cannot fulfill this request right now, try again later |
978 | * please! */ | |
979 | if (s->state == SOCKET_STOP_PRE || | |
980 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
981 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
982 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
983 | s->state == SOCKET_FINAL_SIGTERM || |
984 | s->state == SOCKET_FINAL_SIGKILL) | |
034c6ed7 LP |
985 | return -EAGAIN; |
986 | ||
83c60c9f LP |
987 | if (s->state == SOCKET_START_PRE || |
988 | s->state == SOCKET_START_POST) | |
034c6ed7 | 989 | return 0; |
83c60c9f | 990 | |
034c6ed7 | 991 | /* Cannot run this without the service being around */ |
4f2d528d LP |
992 | if (s->service) { |
993 | if (s->service->meta.load_state != UNIT_LOADED) | |
994 | return -ENOENT; | |
995 | ||
996 | /* If the service is alredy actvie we cannot start the | |
997 | * socket */ | |
998 | if (s->service->state != SERVICE_DEAD && | |
999 | s->service->state != SERVICE_MAINTAINANCE && | |
1000 | s->service->state != SERVICE_AUTO_RESTART) | |
1001 | return -EBUSY; | |
1002 | } | |
e537352b | 1003 | |
034c6ed7 | 1004 | assert(s->state == SOCKET_DEAD || s->state == SOCKET_MAINTAINANCE); |
83c60c9f | 1005 | |
034c6ed7 LP |
1006 | s->failure = false; |
1007 | socket_enter_start_pre(s); | |
1008 | return 0; | |
1009 | } | |
83c60c9f | 1010 | |
87f0e418 LP |
1011 | static int socket_stop(Unit *u) { |
1012 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
1013 | |
1014 | assert(s); | |
1015 | ||
1016 | /* We cannot fulfill this request right now, try again later | |
1017 | * please! */ | |
1018 | if (s->state == SOCKET_START_PRE || | |
1019 | s->state == SOCKET_START_POST) | |
1020 | return -EAGAIN; | |
83c60c9f | 1021 | |
e537352b LP |
1022 | /* Already on it */ |
1023 | if (s->state == SOCKET_STOP_PRE || | |
1024 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
1025 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
1026 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
1027 | s->state == SOCKET_FINAL_SIGTERM || |
1028 | s->state == SOCKET_FINAL_SIGTERM) | |
e537352b LP |
1029 | return 0; |
1030 | ||
034c6ed7 | 1031 | assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING); |
83c60c9f | 1032 | |
034c6ed7 | 1033 | socket_enter_stop_pre(s, true); |
542563ba LP |
1034 | return 0; |
1035 | } | |
1036 | ||
a16e1123 LP |
1037 | static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { |
1038 | Socket *s = SOCKET(u); | |
1039 | SocketPort *p; | |
1040 | int r; | |
1041 | ||
1042 | assert(u); | |
1043 | assert(f); | |
1044 | assert(fds); | |
1045 | ||
1046 | unit_serialize_item(u, f, "state", socket_state_to_string(s->state)); | |
1047 | unit_serialize_item(u, f, "failure", yes_no(s->failure)); | |
1048 | unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted); | |
1049 | ||
1050 | if (s->control_pid > 0) | |
1051 | unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) s->control_pid); | |
1052 | ||
1053 | if (s->control_command_id >= 0) | |
1054 | unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id)); | |
1055 | ||
1056 | LIST_FOREACH(port, p, s->ports) { | |
1057 | int copy; | |
1058 | ||
1059 | if (p->fd < 0) | |
1060 | continue; | |
1061 | ||
1062 | if ((copy = fdset_put_dup(fds, p->fd)) < 0) | |
1063 | return copy; | |
1064 | ||
1065 | if (p->type == SOCKET_SOCKET) { | |
1066 | char *t; | |
1067 | ||
1068 | if ((r = socket_address_print(&p->address, &t)) < 0) | |
1069 | return r; | |
1070 | ||
1071 | unit_serialize_item_format(u, f, "socket", "%i %s", copy, t); | |
1072 | free(t); | |
1073 | } else { | |
1074 | assert(p->type == SOCKET_FIFO); | |
1075 | unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path); | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1083 | Socket *s = SOCKET(u); | |
1084 | int r; | |
1085 | ||
1086 | assert(u); | |
1087 | assert(key); | |
1088 | assert(value); | |
1089 | assert(fds); | |
1090 | ||
1091 | if (streq(key, "state")) { | |
1092 | SocketState state; | |
1093 | ||
1094 | if ((state = socket_state_from_string(value)) < 0) | |
1095 | log_debug("Failed to parse state value %s", value); | |
1096 | else | |
1097 | s->deserialized_state = state; | |
1098 | } else if (streq(key, "failure")) { | |
1099 | int b; | |
1100 | ||
1101 | if ((b = parse_boolean(value)) < 0) | |
1102 | log_debug("Failed to parse failure value %s", value); | |
1103 | else | |
1104 | s->failure = b || s->failure; | |
1105 | ||
1106 | } else if (streq(key, "n-accepted")) { | |
1107 | unsigned k; | |
1108 | ||
1109 | if ((r = safe_atou(value, &k)) < 0) | |
1110 | log_debug("Failed to parse n-accepted value %s", value); | |
1111 | else | |
1112 | s->n_accepted += k; | |
1113 | } else if (streq(key, "control-pid")) { | |
1114 | unsigned pid; | |
1115 | ||
1116 | if ((r = safe_atou(value, &pid)) < 0 || pid <= 0) | |
1117 | log_debug("Failed to parse control-pid value %s", value); | |
1118 | else | |
1119 | s->control_pid = (pid_t) pid; | |
1120 | } else if (streq(key, "control-command")) { | |
1121 | SocketExecCommand id; | |
1122 | ||
1123 | if ((id = socket_exec_command_from_string(value)) < 0) | |
1124 | log_debug("Failed to parse exec-command value %s", value); | |
1125 | else { | |
1126 | s->control_command_id = id; | |
1127 | s->control_command = s->exec_command[id]; | |
1128 | } | |
1129 | } else if (streq(key, "fifo")) { | |
1130 | int fd, skip = 0; | |
1131 | SocketPort *p; | |
1132 | ||
1133 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1134 | log_debug("Failed to parse fifo value %s", value); | |
1135 | else { | |
1136 | ||
1137 | LIST_FOREACH(port, p, s->ports) | |
1138 | if (streq(p->path, value+skip)) | |
1139 | break; | |
1140 | ||
1141 | if (p) { | |
1142 | if (p->fd >= 0) | |
1143 | close_nointr_nofail(p->fd); | |
1144 | p->fd = fdset_remove(fds, fd); | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | } else if (streq(key, "socket")) { | |
1149 | int fd, skip = 0; | |
1150 | SocketPort *p; | |
1151 | ||
1152 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1153 | log_debug("Failed to parse socket value %s", value); | |
1154 | else { | |
1155 | ||
1156 | LIST_FOREACH(port, p, s->ports) | |
1157 | if (socket_address_is(&p->address, value+skip)) | |
1158 | break; | |
1159 | ||
1160 | if (p) { | |
1161 | if (p->fd >= 0) | |
1162 | close_nointr_nofail(p->fd); | |
1163 | p->fd = fdset_remove(fds, fd); | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | } else | |
1168 | log_debug("Unknown serialization key '%s'", key); | |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
87f0e418 LP |
1173 | static UnitActiveState socket_active_state(Unit *u) { |
1174 | assert(u); | |
5cb5a6ff | 1175 | |
acbb0225 | 1176 | return state_translation_table[SOCKET(u)->state]; |
5cb5a6ff LP |
1177 | } |
1178 | ||
10a94420 LP |
1179 | static const char *socket_sub_state_to_string(Unit *u) { |
1180 | assert(u); | |
1181 | ||
a16e1123 | 1182 | return socket_state_to_string(SOCKET(u)->state); |
10a94420 LP |
1183 | } |
1184 | ||
acbb0225 | 1185 | static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 | 1186 | Socket *s = SOCKET(u); |
4f2d528d | 1187 | int cfd = -1; |
9152c765 | 1188 | |
034c6ed7 | 1189 | assert(s); |
8d567588 | 1190 | assert(fd >= 0); |
9152c765 | 1191 | |
871d7de4 LP |
1192 | if (s->state != SOCKET_LISTENING) |
1193 | return; | |
1194 | ||
9e2f7c11 | 1195 | log_debug("Incoming traffic on %s", u->meta.id); |
9152c765 | 1196 | |
4f2d528d LP |
1197 | if (events != EPOLLIN) { |
1198 | log_error("Got invalid poll event on socket."); | |
8d567588 | 1199 | goto fail; |
4f2d528d LP |
1200 | } |
1201 | ||
cabab516 | 1202 | if (w->socket_accept) { |
4f2d528d LP |
1203 | for (;;) { |
1204 | ||
1205 | if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) { | |
1206 | ||
1207 | if (errno == EINTR) | |
1208 | continue; | |
1209 | ||
1210 | log_error("Failed to accept socket: %m"); | |
8d567588 | 1211 | goto fail; |
4f2d528d LP |
1212 | } |
1213 | ||
1214 | break; | |
1215 | } | |
1216 | } | |
9152c765 | 1217 | |
4f2d528d | 1218 | socket_enter_running(s, cfd); |
8d567588 LP |
1219 | return; |
1220 | ||
1221 | fail: | |
1222 | socket_enter_stop_pre(s, false); | |
9152c765 LP |
1223 | } |
1224 | ||
87f0e418 LP |
1225 | static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1226 | Socket *s = SOCKET(u); | |
034c6ed7 | 1227 | bool success; |
5cb5a6ff LP |
1228 | |
1229 | assert(s); | |
034c6ed7 | 1230 | assert(pid >= 0); |
5cb5a6ff | 1231 | |
cb8a8f78 | 1232 | success = is_clean_exit(code, status); |
034c6ed7 | 1233 | s->failure = s->failure || !success; |
542563ba | 1234 | |
034c6ed7 | 1235 | assert(s->control_pid == pid); |
034c6ed7 LP |
1236 | s->control_pid = 0; |
1237 | ||
a16e1123 LP |
1238 | if (s->control_command) |
1239 | exec_status_fill(&s->control_command->exec_status, pid, code, status); | |
1240 | ||
9e2f7c11 | 1241 | log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); |
034c6ed7 | 1242 | |
a16e1123 LP |
1243 | if (s->control_command && s->control_command->command_next && success) { |
1244 | log_debug("%s running next command for state %s", u->meta.id, socket_state_to_string(s->state)); | |
034c6ed7 | 1245 | socket_run_next(s, success); |
acbb0225 | 1246 | } else { |
a16e1123 LP |
1247 | s->control_command = NULL; |
1248 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
1249 | ||
034c6ed7 LP |
1250 | /* No further commands for this step, so let's figure |
1251 | * out what to do next */ | |
5cb5a6ff | 1252 | |
a16e1123 | 1253 | log_debug("%s got final SIGCHLD for state %s", u->meta.id, socket_state_to_string(s->state)); |
acbb0225 | 1254 | |
034c6ed7 LP |
1255 | switch (s->state) { |
1256 | ||
1257 | case SOCKET_START_PRE: | |
1258 | if (success) | |
acbb0225 | 1259 | socket_enter_start_post(s); |
034c6ed7 | 1260 | else |
80876c20 | 1261 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
1262 | break; |
1263 | ||
1264 | case SOCKET_START_POST: | |
1265 | if (success) | |
e9af15c3 | 1266 | socket_enter_listening(s); |
034c6ed7 LP |
1267 | else |
1268 | socket_enter_stop_pre(s, false); | |
1269 | break; | |
1270 | ||
1271 | case SOCKET_STOP_PRE: | |
1272 | case SOCKET_STOP_PRE_SIGTERM: | |
1273 | case SOCKET_STOP_PRE_SIGKILL: | |
1274 | socket_enter_stop_post(s, success); | |
1275 | break; | |
1276 | ||
1277 | case SOCKET_STOP_POST: | |
80876c20 LP |
1278 | case SOCKET_FINAL_SIGTERM: |
1279 | case SOCKET_FINAL_SIGKILL: | |
034c6ed7 LP |
1280 | socket_enter_dead(s, success); |
1281 | break; | |
1282 | ||
1283 | default: | |
1284 | assert_not_reached("Uh, control process died at wrong time."); | |
1285 | } | |
1286 | } | |
1287 | } | |
5cb5a6ff | 1288 | |
acbb0225 | 1289 | static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) { |
87f0e418 | 1290 | Socket *s = SOCKET(u); |
5cb5a6ff | 1291 | |
034c6ed7 LP |
1292 | assert(s); |
1293 | assert(elapsed == 1); | |
acbb0225 | 1294 | assert(w == &s->timer_watch); |
034c6ed7 LP |
1295 | |
1296 | switch (s->state) { | |
1297 | ||
1298 | case SOCKET_START_PRE: | |
9e2f7c11 | 1299 | log_warning("%s starting timed out. Terminating.", u->meta.id); |
80876c20 LP |
1300 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
1301 | ||
034c6ed7 | 1302 | case SOCKET_START_POST: |
9e2f7c11 | 1303 | log_warning("%s starting timed out. Stopping.", u->meta.id); |
034c6ed7 LP |
1304 | socket_enter_stop_pre(s, false); |
1305 | break; | |
1306 | ||
1307 | case SOCKET_STOP_PRE: | |
9e2f7c11 | 1308 | log_warning("%s stopping timed out. Terminating.", u->meta.id); |
034c6ed7 LP |
1309 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false); |
1310 | break; | |
1311 | ||
1312 | case SOCKET_STOP_PRE_SIGTERM: | |
9e2f7c11 | 1313 | log_warning("%s stopping timed out. Killing.", u->meta.id); |
034c6ed7 LP |
1314 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false); |
1315 | break; | |
1316 | ||
1317 | case SOCKET_STOP_PRE_SIGKILL: | |
9e2f7c11 | 1318 | log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id); |
034c6ed7 LP |
1319 | socket_enter_stop_post(s, false); |
1320 | break; | |
1321 | ||
1322 | case SOCKET_STOP_POST: | |
9e2f7c11 | 1323 | log_warning("%s stopping timed out (2). Terminating.", u->meta.id); |
80876c20 | 1324 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false); |
034c6ed7 LP |
1325 | break; |
1326 | ||
80876c20 | 1327 | case SOCKET_FINAL_SIGTERM: |
9e2f7c11 | 1328 | log_warning("%s stopping timed out (2). Killing.", u->meta.id); |
80876c20 | 1329 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false); |
034c6ed7 LP |
1330 | break; |
1331 | ||
80876c20 | 1332 | case SOCKET_FINAL_SIGKILL: |
9e2f7c11 | 1333 | log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id); |
034c6ed7 LP |
1334 | socket_enter_dead(s, false); |
1335 | break; | |
1336 | ||
1337 | default: | |
1338 | assert_not_reached("Timeout at wrong time."); | |
1339 | } | |
5cb5a6ff LP |
1340 | } |
1341 | ||
44d8db9e LP |
1342 | int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { |
1343 | int *rfds; | |
1344 | unsigned rn_fds, k; | |
1345 | SocketPort *p; | |
1346 | ||
1347 | assert(s); | |
1348 | assert(fds); | |
1349 | assert(n_fds); | |
1350 | ||
1351 | /* Called from the service code for requesting our fds */ | |
1352 | ||
1353 | rn_fds = 0; | |
1354 | LIST_FOREACH(port, p, s->ports) | |
1355 | if (p->fd >= 0) | |
1356 | rn_fds++; | |
1357 | ||
1358 | if (!(rfds = new(int, rn_fds)) < 0) | |
1359 | return -ENOMEM; | |
1360 | ||
1361 | k = 0; | |
1362 | LIST_FOREACH(port, p, s->ports) | |
1363 | if (p->fd >= 0) | |
1364 | rfds[k++] = p->fd; | |
1365 | ||
1366 | assert(k == rn_fds); | |
1367 | ||
1368 | *fds = rfds; | |
1369 | *n_fds = rn_fds; | |
1370 | ||
1371 | return 0; | |
1372 | } | |
1373 | ||
ceee3d82 LP |
1374 | void socket_notify_service_dead(Socket *s) { |
1375 | assert(s); | |
1376 | ||
1377 | /* The service is dead. Dang. */ | |
1378 | ||
1379 | if (s->state == SOCKET_RUNNING) { | |
9e2f7c11 | 1380 | log_debug("%s got notified about service death.", s->meta.id); |
ceee3d82 LP |
1381 | socket_enter_listening(s); |
1382 | } | |
1383 | } | |
1384 | ||
a16e1123 LP |
1385 | static const char* const socket_state_table[_SOCKET_STATE_MAX] = { |
1386 | [SOCKET_DEAD] = "dead", | |
1387 | [SOCKET_START_PRE] = "start-pre", | |
1388 | [SOCKET_START_POST] = "start-post", | |
1389 | [SOCKET_LISTENING] = "listening", | |
1390 | [SOCKET_RUNNING] = "running", | |
1391 | [SOCKET_STOP_PRE] = "stop-pre", | |
1392 | [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm", | |
1393 | [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill", | |
1394 | [SOCKET_STOP_POST] = "stop-post", | |
1395 | [SOCKET_FINAL_SIGTERM] = "final-sigterm", | |
1396 | [SOCKET_FINAL_SIGKILL] = "final-sigkill", | |
1397 | [SOCKET_MAINTAINANCE] = "maintainance" | |
1398 | }; | |
1399 | ||
1400 | DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState); | |
1401 | ||
1402 | static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = { | |
1403 | [SOCKET_EXEC_START_PRE] = "StartPre", | |
1404 | [SOCKET_EXEC_START_POST] = "StartPost", | |
1405 | [SOCKET_EXEC_STOP_PRE] = "StopPre", | |
1406 | [SOCKET_EXEC_STOP_POST] = "StopPost" | |
1407 | }; | |
1408 | ||
1409 | DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand); | |
1410 | ||
87f0e418 | 1411 | const UnitVTable socket_vtable = { |
5cb5a6ff LP |
1412 | .suffix = ".socket", |
1413 | ||
034c6ed7 LP |
1414 | .init = socket_init, |
1415 | .done = socket_done, | |
a16e1123 LP |
1416 | .load = socket_load, |
1417 | ||
1418 | .coldplug = socket_coldplug, | |
034c6ed7 | 1419 | |
5cb5a6ff LP |
1420 | .dump = socket_dump, |
1421 | ||
542563ba LP |
1422 | .start = socket_start, |
1423 | .stop = socket_stop, | |
5cb5a6ff | 1424 | |
a16e1123 LP |
1425 | .serialize = socket_serialize, |
1426 | .deserialize_item = socket_deserialize_item, | |
1427 | ||
5cb5a6ff | 1428 | .active_state = socket_active_state, |
10a94420 | 1429 | .sub_state_to_string = socket_sub_state_to_string, |
5cb5a6ff | 1430 | |
9152c765 | 1431 | .fd_event = socket_fd_event, |
034c6ed7 | 1432 | .sigchld_event = socket_sigchld_event, |
4139c1b2 LP |
1433 | .timer_event = socket_timer_event, |
1434 | ||
1435 | .bus_message_handler = bus_socket_message_handler | |
5cb5a6ff | 1436 | }; |