]>
Commit | Line | Data |
---|---|---|
d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
5cb5a6ff | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
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> |
916abb21 | 30 | #include <mqueue.h> |
83c60c9f | 31 | |
87f0e418 | 32 | #include "unit.h" |
5cb5a6ff | 33 | #include "socket.h" |
cebf8b20 | 34 | #include "netinet/tcp.h" |
83c60c9f | 35 | #include "log.h" |
23a177ef LP |
36 | #include "load-dropin.h" |
37 | #include "load-fragment.h" | |
9e2f7c11 | 38 | #include "strv.h" |
49e942b2 | 39 | #include "mkdir.h" |
9eb977db | 40 | #include "path-util.h" |
4f2d528d | 41 | #include "unit-name.h" |
4139c1b2 | 42 | #include "dbus-socket.h" |
4fd5948e | 43 | #include "missing.h" |
a40eb732 | 44 | #include "special.h" |
398ef8ba | 45 | #include "bus-errors.h" |
e51bc1a2 | 46 | #include "label.h" |
9a57c629 | 47 | #include "exit-status.h" |
f6a6225e | 48 | #include "def.h" |
83c60c9f | 49 | |
acbb0225 | 50 | static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { |
87f0e418 LP |
51 | [SOCKET_DEAD] = UNIT_INACTIVE, |
52 | [SOCKET_START_PRE] = UNIT_ACTIVATING, | |
53 | [SOCKET_START_POST] = UNIT_ACTIVATING, | |
54 | [SOCKET_LISTENING] = UNIT_ACTIVE, | |
55 | [SOCKET_RUNNING] = UNIT_ACTIVE, | |
56 | [SOCKET_STOP_PRE] = UNIT_DEACTIVATING, | |
57 | [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING, | |
58 | [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING, | |
59 | [SOCKET_STOP_POST] = UNIT_DEACTIVATING, | |
80876c20 LP |
60 | [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
61 | [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 62 | [SOCKET_FAILED] = UNIT_FAILED |
83c60c9f | 63 | }; |
5cb5a6ff | 64 | |
a16e1123 LP |
65 | static void socket_init(Unit *u) { |
66 | Socket *s = SOCKET(u); | |
67 | ||
68 | assert(u); | |
ac155bb8 | 69 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 70 | |
a16e1123 LP |
71 | s->backlog = SOMAXCONN; |
72 | s->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
73 | s->directory_mode = 0755; | |
9131f660 | 74 | s->socket_mode = 0666; |
a16e1123 | 75 | |
6cf6bbc2 LP |
76 | s->max_connections = 64; |
77 | ||
4fd5948e | 78 | s->priority = -1; |
4fd5948e LP |
79 | s->ip_tos = -1; |
80 | s->ip_ttl = -1; | |
4fd5948e | 81 | s->mark = -1; |
4fd5948e | 82 | |
a16e1123 | 83 | exec_context_init(&s->exec_context); |
ac155bb8 MS |
84 | s->exec_context.std_output = u->manager->default_std_output; |
85 | s->exec_context.std_error = u->manager->default_std_error; | |
4819ff03 | 86 | kill_context_init(&s->kill_context); |
a16e1123 LP |
87 | |
88 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
89 | } | |
acbb0225 | 90 | |
5e94833f LP |
91 | static void socket_unwatch_control_pid(Socket *s) { |
92 | assert(s); | |
93 | ||
94 | if (s->control_pid <= 0) | |
95 | return; | |
96 | ||
97 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
98 | s->control_pid = 0; | |
99 | } | |
100 | ||
87f0e418 LP |
101 | static void socket_done(Unit *u) { |
102 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
103 | SocketPort *p; |
104 | ||
105 | assert(s); | |
106 | ||
107 | while ((p = s->ports)) { | |
108 | LIST_REMOVE(SocketPort, port, s->ports, p); | |
109 | ||
a16e1123 LP |
110 | if (p->fd >= 0) { |
111 | unit_unwatch_fd(UNIT(s), &p->fd_watch); | |
112 | close_nointr_nofail(p->fd); | |
113 | } | |
114 | ||
034c6ed7 LP |
115 | free(p->path); |
116 | free(p); | |
117 | } | |
118 | ||
119 | exec_context_done(&s->exec_context); | |
e537352b | 120 | exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX); |
034c6ed7 LP |
121 | s->control_command = NULL; |
122 | ||
5e94833f | 123 | socket_unwatch_control_pid(s); |
034c6ed7 | 124 | |
57020a3a | 125 | unit_ref_unset(&s->service); |
034c6ed7 | 126 | |
cebf8b20 TT |
127 | free(s->tcp_congestion); |
128 | s->tcp_congestion = NULL; | |
129 | ||
acbb0225 | 130 | free(s->bind_to_device); |
e537352b | 131 | s->bind_to_device = NULL; |
acbb0225 LP |
132 | |
133 | unit_unwatch_timer(u, &s->timer_watch); | |
5cb5a6ff LP |
134 | } |
135 | ||
b15bdda8 LP |
136 | static int socket_instantiate_service(Socket *s) { |
137 | char *prefix, *name; | |
138 | int r; | |
139 | Unit *u; | |
140 | ||
141 | assert(s); | |
142 | ||
143 | /* This fills in s->service if it isn't filled in yet. For | |
144 | * Accept=yes sockets we create the next connection service | |
145 | * here. For Accept=no this is mostly a NOP since the service | |
146 | * is figured out at load time anyway. */ | |
147 | ||
57020a3a | 148 | if (UNIT_DEREF(s->service)) |
b15bdda8 LP |
149 | return 0; |
150 | ||
151 | assert(s->accept); | |
152 | ||
1124fe6f | 153 | if (!(prefix = unit_name_to_prefix(UNIT(s)->id))) |
b15bdda8 LP |
154 | return -ENOMEM; |
155 | ||
156 | r = asprintf(&name, "%s@%u.service", prefix, s->n_accepted); | |
157 | free(prefix); | |
158 | ||
159 | if (r < 0) | |
160 | return -ENOMEM; | |
161 | ||
1124fe6f | 162 | r = manager_load_unit(UNIT(s)->manager, name, NULL, NULL, &u); |
b15bdda8 LP |
163 | free(name); |
164 | ||
165 | if (r < 0) | |
166 | return r; | |
167 | ||
7b4bf06b | 168 | #ifdef HAVE_SYSV_COMPAT |
1b64d026 | 169 | if (SERVICE(u)->is_sysv) { |
7b4bf06b LP |
170 | log_error("Using SysV services for socket activation is not supported. Refusing."); |
171 | return -ENOENT; | |
172 | } | |
173 | #endif | |
174 | ||
ac155bb8 | 175 | u->no_gc = true; |
57020a3a LP |
176 | unit_ref_set(&s->service, u); |
177 | ||
178 | return unit_add_two_dependencies(UNIT(s), UNIT_BEFORE, UNIT_TRIGGERS, u, false); | |
b15bdda8 LP |
179 | } |
180 | ||
4f2d528d LP |
181 | static bool have_non_accept_socket(Socket *s) { |
182 | SocketPort *p; | |
183 | ||
184 | assert(s); | |
185 | ||
186 | if (!s->accept) | |
187 | return true; | |
188 | ||
dd5ad9d4 LP |
189 | LIST_FOREACH(port, p, s->ports) { |
190 | ||
191 | if (p->type != SOCKET_SOCKET) | |
192 | return true; | |
193 | ||
4f2d528d LP |
194 | if (!socket_address_can_accept(&p->address)) |
195 | return true; | |
dd5ad9d4 | 196 | } |
4f2d528d LP |
197 | |
198 | return false; | |
199 | } | |
200 | ||
201 | static int socket_verify(Socket *s) { | |
202 | assert(s); | |
203 | ||
1124fe6f | 204 | if (UNIT(s)->load_state != UNIT_LOADED) |
4f2d528d LP |
205 | return 0; |
206 | ||
207 | if (!s->ports) { | |
1124fe6f | 208 | log_error("%s lacks Listen setting. Refusing.", UNIT(s)->id); |
4f2d528d LP |
209 | return -EINVAL; |
210 | } | |
211 | ||
0009d2a6 | 212 | if (s->accept && have_non_accept_socket(s)) { |
1124fe6f | 213 | log_error("%s configured for accepting sockets, but sockets are non-accepting. Refusing.", UNIT(s)->id); |
0009d2a6 LP |
214 | return -EINVAL; |
215 | } | |
216 | ||
6cf6bbc2 | 217 | if (s->accept && s->max_connections <= 0) { |
1124fe6f | 218 | log_error("%s's MaxConnection setting too small. Refusing.", UNIT(s)->id); |
4d0e5dbd LP |
219 | return -EINVAL; |
220 | } | |
221 | ||
57020a3a | 222 | if (s->accept && UNIT_DEREF(s->service)) { |
1124fe6f | 223 | log_error("Explicit service configuration for accepting sockets not supported on %s. Refusing.", UNIT(s)->id); |
d9ff321a LP |
224 | return -EINVAL; |
225 | } | |
226 | ||
4819ff03 | 227 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
1124fe6f | 228 | log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); |
6cf6bbc2 LP |
229 | return -EINVAL; |
230 | } | |
231 | ||
4f2d528d LP |
232 | return 0; |
233 | } | |
234 | ||
6e2ef85b LP |
235 | static bool socket_needs_mount(Socket *s, const char *prefix) { |
236 | SocketPort *p; | |
237 | ||
238 | assert(s); | |
239 | ||
240 | LIST_FOREACH(port, p, s->ports) { | |
241 | ||
242 | if (p->type == SOCKET_SOCKET) { | |
243 | if (socket_address_needs_mount(&p->address, prefix)) | |
244 | return true; | |
916abb21 | 245 | } else if (p->type == SOCKET_FIFO || p->type == SOCKET_SPECIAL) { |
6e2ef85b LP |
246 | if (path_startswith(p->path, prefix)) |
247 | return true; | |
248 | } | |
249 | } | |
250 | ||
251 | return false; | |
252 | } | |
253 | ||
254 | int socket_add_one_mount_link(Socket *s, Mount *m) { | |
255 | int r; | |
256 | ||
257 | assert(s); | |
258 | assert(m); | |
259 | ||
1124fe6f MS |
260 | if (UNIT(s)->load_state != UNIT_LOADED || |
261 | UNIT(m)->load_state != UNIT_LOADED) | |
6e2ef85b LP |
262 | return 0; |
263 | ||
264 | if (!socket_needs_mount(s, m->where)) | |
265 | return 0; | |
266 | ||
2c966c03 | 267 | if ((r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0) |
6e2ef85b LP |
268 | return r; |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | static int socket_add_mount_links(Socket *s) { | |
ac155bb8 | 274 | Unit *other; |
6e2ef85b LP |
275 | int r; |
276 | ||
277 | assert(s); | |
278 | ||
1124fe6f | 279 | LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_MOUNT]) |
595ed347 | 280 | if ((r = socket_add_one_mount_link(s, MOUNT(other))) < 0) |
6e2ef85b LP |
281 | return r; |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int socket_add_device_link(Socket *s) { | |
287 | char *t; | |
288 | int r; | |
289 | ||
290 | assert(s); | |
291 | ||
292 | if (!s->bind_to_device) | |
293 | return 0; | |
294 | ||
295 | if (asprintf(&t, "/sys/subsystem/net/devices/%s", s->bind_to_device) < 0) | |
296 | return -ENOMEM; | |
297 | ||
298 | r = unit_add_node_link(UNIT(s), t, false); | |
299 | free(t); | |
300 | ||
301 | return r; | |
302 | } | |
303 | ||
a40eb732 LP |
304 | static int socket_add_default_dependencies(Socket *s) { |
305 | int r; | |
306 | assert(s); | |
307 | ||
1124fe6f | 308 | if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) { |
2a77d31d LP |
309 | if ((r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0) |
310 | return r; | |
311 | ||
a40eb732 LP |
312 | if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0) |
313 | return r; | |
2a77d31d | 314 | } |
a40eb732 | 315 | |
ead8e478 | 316 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
a40eb732 LP |
317 | } |
318 | ||
4cfc6dbe LP |
319 | static bool socket_has_exec(Socket *s) { |
320 | unsigned i; | |
321 | assert(s); | |
322 | ||
323 | for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++) | |
324 | if (s->exec_command[i]) | |
325 | return true; | |
326 | ||
327 | return false; | |
328 | } | |
329 | ||
e537352b LP |
330 | static int socket_load(Unit *u) { |
331 | Socket *s = SOCKET(u); | |
332 | int r; | |
44d8db9e | 333 | |
e537352b | 334 | assert(u); |
ac155bb8 | 335 | assert(u->load_state == UNIT_STUB); |
44d8db9e | 336 | |
e537352b | 337 | if ((r = unit_load_fragment_and_dropin(u)) < 0) |
23a177ef | 338 | return r; |
44d8db9e | 339 | |
23a177ef | 340 | /* This is a new unit? Then let's add in some extras */ |
ac155bb8 | 341 | if (u->load_state == UNIT_LOADED) { |
44d8db9e | 342 | |
4f2d528d | 343 | if (have_non_accept_socket(s)) { |
d9ff321a | 344 | |
57020a3a LP |
345 | if (!UNIT_DEREF(s->service)) { |
346 | Unit *x; | |
347 | ||
348 | r = unit_load_related_unit(u, ".service", &x); | |
349 | if (r < 0) | |
d9ff321a | 350 | return r; |
23a177ef | 351 | |
57020a3a LP |
352 | unit_ref_set(&s->service, x); |
353 | } | |
354 | ||
355 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(s->service), true); | |
356 | if (r < 0) | |
4f2d528d LP |
357 | return r; |
358 | } | |
44d8db9e | 359 | |
6e2ef85b LP |
360 | if ((r = socket_add_mount_links(s)) < 0) |
361 | return r; | |
362 | ||
363 | if ((r = socket_add_device_link(s)) < 0) | |
364 | return r; | |
365 | ||
4cfc6dbe LP |
366 | if (socket_has_exec(s)) |
367 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) | |
368 | return r; | |
23a177ef | 369 | |
d686d8a9 | 370 | if ((r = unit_add_default_cgroups(u)) < 0) |
23a177ef | 371 | return r; |
a40eb732 | 372 | |
1124fe6f | 373 | if (UNIT(s)->default_dependencies) |
a40eb732 LP |
374 | if ((r = socket_add_default_dependencies(s)) < 0) |
375 | return r; | |
e06c73cc LP |
376 | |
377 | r = unit_patch_working_directory(UNIT(s), &s->exec_context); | |
378 | if (r < 0) | |
379 | return r; | |
23a177ef LP |
380 | } |
381 | ||
4f2d528d | 382 | return socket_verify(s); |
44d8db9e LP |
383 | } |
384 | ||
7a22745a LP |
385 | static const char* listen_lookup(int family, int type) { |
386 | ||
387 | if (family == AF_NETLINK) | |
388 | return "ListenNetlink"; | |
542563ba LP |
389 | |
390 | if (type == SOCK_STREAM) | |
391 | return "ListenStream"; | |
392 | else if (type == SOCK_DGRAM) | |
393 | return "ListenDatagram"; | |
394 | else if (type == SOCK_SEQPACKET) | |
395 | return "ListenSequentialPacket"; | |
396 | ||
034c6ed7 | 397 | assert_not_reached("Unknown socket type"); |
542563ba LP |
398 | return NULL; |
399 | } | |
400 | ||
87f0e418 | 401 | static void socket_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 402 | |
5cb5a6ff | 403 | SocketExecCommand c; |
87f0e418 | 404 | Socket *s = SOCKET(u); |
542563ba | 405 | SocketPort *p; |
82ba9f08 LP |
406 | const char *prefix2; |
407 | char *p2; | |
5cb5a6ff LP |
408 | |
409 | assert(s); | |
fa068367 | 410 | assert(f); |
5cb5a6ff | 411 | |
82ba9f08 LP |
412 | p2 = strappend(prefix, "\t"); |
413 | prefix2 = p2 ? p2 : prefix; | |
c43d20a0 | 414 | |
5cb5a6ff LP |
415 | fprintf(f, |
416 | "%sSocket State: %s\n" | |
81a5c6d0 | 417 | "%sResult: %s\n" |
542563ba | 418 | "%sBindIPv6Only: %s\n" |
b5a0699f LP |
419 | "%sBacklog: %u\n" |
420 | "%sSocketMode: %04o\n" | |
4fd5948e LP |
421 | "%sDirectoryMode: %04o\n" |
422 | "%sKeepAlive: %s\n" | |
cebf8b20 | 423 | "%sFreeBind: %s\n" |
6b6d2dee | 424 | "%sTransparent: %s\n" |
ec6370a2 | 425 | "%sBroadcast: %s\n" |
ede3deb4 | 426 | "%sPassCredentials: %s\n" |
54ecda32 | 427 | "%sPassSecurity: %s\n" |
cebf8b20 | 428 | "%sTCPCongestion: %s\n", |
a16e1123 | 429 | prefix, socket_state_to_string(s->state), |
81a5c6d0 | 430 | prefix, socket_result_to_string(s->result), |
c0120d99 | 431 | prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only), |
b5a0699f LP |
432 | prefix, s->backlog, |
433 | prefix, s->socket_mode, | |
4fd5948e LP |
434 | prefix, s->directory_mode, |
435 | prefix, yes_no(s->keep_alive), | |
cebf8b20 | 436 | prefix, yes_no(s->free_bind), |
6b6d2dee | 437 | prefix, yes_no(s->transparent), |
ec6370a2 | 438 | prefix, yes_no(s->broadcast), |
d68af586 | 439 | prefix, yes_no(s->pass_cred), |
54ecda32 | 440 | prefix, yes_no(s->pass_sec), |
83a95334 | 441 | prefix, strna(s->tcp_congestion)); |
542563ba | 442 | |
70123e68 LP |
443 | if (s->control_pid > 0) |
444 | fprintf(f, | |
bb00e604 LP |
445 | "%sControl PID: %lu\n", |
446 | prefix, (unsigned long) s->control_pid); | |
70123e68 | 447 | |
acbb0225 LP |
448 | if (s->bind_to_device) |
449 | fprintf(f, | |
450 | "%sBindToDevice: %s\n", | |
451 | prefix, s->bind_to_device); | |
452 | ||
4f2d528d LP |
453 | if (s->accept) |
454 | fprintf(f, | |
6cf6bbc2 LP |
455 | "%sAccepted: %u\n" |
456 | "%sNConnections: %u\n" | |
457 | "%sMaxConnections: %u\n", | |
458 | prefix, s->n_accepted, | |
459 | prefix, s->n_connections, | |
460 | prefix, s->max_connections); | |
4f2d528d | 461 | |
4fd5948e LP |
462 | if (s->priority >= 0) |
463 | fprintf(f, | |
464 | "%sPriority: %i\n", | |
465 | prefix, s->priority); | |
466 | ||
467 | if (s->receive_buffer > 0) | |
468 | fprintf(f, | |
469 | "%sReceiveBuffer: %zu\n", | |
470 | prefix, s->receive_buffer); | |
471 | ||
472 | if (s->send_buffer > 0) | |
473 | fprintf(f, | |
474 | "%sSendBuffer: %zu\n", | |
475 | prefix, s->send_buffer); | |
476 | ||
477 | if (s->ip_tos >= 0) | |
478 | fprintf(f, | |
479 | "%sIPTOS: %i\n", | |
480 | prefix, s->ip_tos); | |
481 | ||
482 | if (s->ip_ttl >= 0) | |
483 | fprintf(f, | |
484 | "%sIPTTL: %i\n", | |
485 | prefix, s->ip_ttl); | |
486 | ||
487 | if (s->pipe_size > 0) | |
488 | fprintf(f, | |
489 | "%sPipeSize: %zu\n", | |
490 | prefix, s->pipe_size); | |
491 | ||
492 | if (s->mark >= 0) | |
493 | fprintf(f, | |
494 | "%sMark: %i\n", | |
495 | prefix, s->mark); | |
496 | ||
916abb21 LP |
497 | if (s->mq_maxmsg > 0) |
498 | fprintf(f, | |
499 | "%sMessageQueueMaxMessages: %li\n", | |
500 | prefix, s->mq_maxmsg); | |
501 | ||
502 | if (s->mq_msgsize > 0) | |
503 | fprintf(f, | |
504 | "%sMessageQueueMessageSize: %li\n", | |
505 | prefix, s->mq_msgsize); | |
506 | ||
034c6ed7 | 507 | LIST_FOREACH(port, p, s->ports) { |
5cb5a6ff | 508 | |
542563ba LP |
509 | if (p->type == SOCKET_SOCKET) { |
510 | const char *t; | |
511 | int r; | |
e364ad06 | 512 | char *k = NULL; |
542563ba LP |
513 | |
514 | if ((r = socket_address_print(&p->address, &k)) < 0) | |
515 | t = strerror(-r); | |
516 | else | |
517 | t = k; | |
518 | ||
7a22745a | 519 | fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t); |
542563ba | 520 | free(k); |
b0a3f2bc LP |
521 | } else if (p->type == SOCKET_SPECIAL) |
522 | fprintf(f, "%sListenSpecial: %s\n", prefix, p->path); | |
916abb21 LP |
523 | else if (p->type == SOCKET_MQUEUE) |
524 | fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path); | |
b0a3f2bc | 525 | else |
542563ba LP |
526 | fprintf(f, "%sListenFIFO: %s\n", prefix, p->path); |
527 | } | |
5cb5a6ff LP |
528 | |
529 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 530 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff | 531 | |
e537352b | 532 | for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) { |
c43d20a0 LP |
533 | if (!s->exec_command[c]) |
534 | continue; | |
5cb5a6ff | 535 | |
40d50879 | 536 | fprintf(f, "%s-> %s:\n", |
a16e1123 | 537 | prefix, socket_exec_command_to_string(c)); |
c43d20a0 LP |
538 | |
539 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 540 | } |
c43d20a0 | 541 | |
82ba9f08 | 542 | free(p2); |
5cb5a6ff LP |
543 | } |
544 | ||
4f2d528d LP |
545 | static int instance_from_socket(int fd, unsigned nr, char **instance) { |
546 | socklen_t l; | |
547 | char *r; | |
548 | union { | |
549 | struct sockaddr sa; | |
550 | struct sockaddr_un un; | |
551 | struct sockaddr_in in; | |
552 | struct sockaddr_in6 in6; | |
553 | struct sockaddr_storage storage; | |
554 | } local, remote; | |
555 | ||
556 | assert(fd >= 0); | |
557 | assert(instance); | |
558 | ||
559 | l = sizeof(local); | |
560 | if (getsockname(fd, &local.sa, &l) < 0) | |
561 | return -errno; | |
562 | ||
563 | l = sizeof(remote); | |
564 | if (getpeername(fd, &remote.sa, &l) < 0) | |
565 | return -errno; | |
566 | ||
567 | switch (local.sa.sa_family) { | |
568 | ||
569 | case AF_INET: { | |
570 | uint32_t | |
571 | a = ntohl(local.in.sin_addr.s_addr), | |
572 | b = ntohl(remote.in.sin_addr.s_addr); | |
573 | ||
574 | if (asprintf(&r, | |
77b088c2 LP |
575 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
576 | nr, | |
4f2d528d LP |
577 | a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF, |
578 | ntohs(local.in.sin_port), | |
579 | b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF, | |
580 | ntohs(remote.in.sin_port)) < 0) | |
581 | return -ENOMEM; | |
582 | ||
583 | break; | |
584 | } | |
585 | ||
586 | case AF_INET6: { | |
2b061f5a LP |
587 | static const char ipv4_prefix[] = { |
588 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF | |
589 | }; | |
590 | ||
591 | if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 && | |
592 | memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) { | |
593 | const uint8_t | |
594 | *a = local.in6.sin6_addr.s6_addr+12, | |
595 | *b = remote.in6.sin6_addr.s6_addr+12; | |
596 | ||
597 | if (asprintf(&r, | |
77b088c2 LP |
598 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
599 | nr, | |
2b061f5a LP |
600 | a[0], a[1], a[2], a[3], |
601 | ntohs(local.in6.sin6_port), | |
602 | b[0], b[1], b[2], b[3], | |
603 | ntohs(remote.in6.sin6_port)) < 0) | |
604 | return -ENOMEM; | |
605 | } else { | |
606 | char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN]; | |
607 | ||
608 | if (asprintf(&r, | |
77b088c2 LP |
609 | "%u-%s:%u-%s:%u", |
610 | nr, | |
2b061f5a LP |
611 | inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)), |
612 | ntohs(local.in6.sin6_port), | |
613 | inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)), | |
614 | ntohs(remote.in6.sin6_port)) < 0) | |
615 | return -ENOMEM; | |
616 | } | |
4f2d528d LP |
617 | |
618 | break; | |
619 | } | |
620 | ||
621 | case AF_UNIX: { | |
622 | struct ucred ucred; | |
623 | ||
624 | l = sizeof(ucred); | |
625 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) | |
626 | return -errno; | |
627 | ||
628 | if (asprintf(&r, | |
bb00e604 | 629 | "%u-%lu-%lu", |
4f2d528d | 630 | nr, |
bb00e604 LP |
631 | (unsigned long) ucred.pid, |
632 | (unsigned long) ucred.uid) < 0) | |
4f2d528d LP |
633 | return -ENOMEM; |
634 | ||
635 | break; | |
636 | } | |
637 | ||
638 | default: | |
639 | assert_not_reached("Unhandled socket type."); | |
640 | } | |
641 | ||
642 | *instance = r; | |
643 | return 0; | |
644 | } | |
645 | ||
034c6ed7 | 646 | static void socket_close_fds(Socket *s) { |
83c60c9f LP |
647 | SocketPort *p; |
648 | ||
649 | assert(s); | |
650 | ||
034c6ed7 | 651 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f LP |
652 | if (p->fd < 0) |
653 | continue; | |
654 | ||
acbb0225 | 655 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
a16e1123 LP |
656 | close_nointr_nofail(p->fd); |
657 | ||
658 | /* One little note: we should never delete any sockets | |
659 | * in the file system here! After all some other | |
660 | * process we spawned might still have a reference of | |
661 | * this fd and wants to continue to use it. Therefore | |
662 | * we delete sockets in the file system before we | |
663 | * create a new one, not after we stopped using | |
664 | * one! */ | |
9152c765 | 665 | |
83c60c9f LP |
666 | p->fd = -1; |
667 | } | |
668 | } | |
669 | ||
4fd5948e LP |
670 | static void socket_apply_socket_options(Socket *s, int fd) { |
671 | assert(s); | |
672 | assert(fd >= 0); | |
673 | ||
674 | if (s->keep_alive) { | |
675 | int b = s->keep_alive; | |
676 | if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0) | |
677 | log_warning("SO_KEEPALIVE failed: %m"); | |
678 | } | |
679 | ||
ec6370a2 LP |
680 | if (s->broadcast) { |
681 | int one = 1; | |
682 | if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0) | |
683 | log_warning("SO_BROADCAST failed: %m"); | |
684 | } | |
685 | ||
d68af586 MS |
686 | if (s->pass_cred) { |
687 | int one = 1; | |
688 | if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) | |
689 | log_warning("SO_PASSCRED failed: %m"); | |
690 | } | |
691 | ||
54ecda32 LP |
692 | if (s->pass_sec) { |
693 | int one = 1; | |
694 | if (setsockopt(fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one)) < 0) | |
695 | log_warning("SO_PASSSEC failed: %m"); | |
696 | } | |
697 | ||
4fd5948e LP |
698 | if (s->priority >= 0) |
699 | if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0) | |
700 | log_warning("SO_PRIORITY failed: %m"); | |
701 | ||
702 | if (s->receive_buffer > 0) { | |
703 | int value = (int) s->receive_buffer; | |
7d9eaa84 LP |
704 | |
705 | /* We first try with SO_RCVBUFFORCE, in case we have the perms for that */ | |
706 | ||
b8cef44e | 707 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0) |
7d9eaa84 LP |
708 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0) |
709 | log_warning("SO_RCVBUF failed: %m"); | |
4fd5948e LP |
710 | } |
711 | ||
712 | if (s->send_buffer > 0) { | |
713 | int value = (int) s->send_buffer; | |
b8cef44e | 714 | if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0) |
7d9eaa84 LP |
715 | if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)) < 0) |
716 | log_warning("SO_SNDBUF failed: %m"); | |
4fd5948e LP |
717 | } |
718 | ||
719 | if (s->mark >= 0) | |
720 | if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0) | |
721 | log_warning("SO_MARK failed: %m"); | |
722 | ||
723 | if (s->ip_tos >= 0) | |
724 | if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0) | |
725 | log_warning("IP_TOS failed: %m"); | |
726 | ||
46925ac5 LP |
727 | if (s->ip_ttl >= 0) { |
728 | int r, x; | |
729 | ||
730 | r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl)); | |
5bfcc1c6 FF |
731 | |
732 | if (socket_ipv6_is_supported()) | |
733 | x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl)); | |
734 | else { | |
735 | x = -1; | |
736 | errno = EAFNOSUPPORT; | |
737 | } | |
46925ac5 LP |
738 | |
739 | if (r < 0 && x < 0) | |
740 | log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m"); | |
741 | } | |
cebf8b20 TT |
742 | |
743 | if (s->tcp_congestion) | |
744 | if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0) | |
745 | log_warning("TCP_CONGESTION failed: %m"); | |
4fd5948e LP |
746 | } |
747 | ||
b15bdda8 | 748 | static void socket_apply_fifo_options(Socket *s, int fd) { |
4fd5948e LP |
749 | assert(s); |
750 | assert(fd >= 0); | |
751 | ||
752 | if (s->pipe_size > 0) | |
753 | if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0) | |
754 | log_warning("F_SETPIPE_SZ: %m"); | |
755 | } | |
756 | ||
b15bdda8 LP |
757 | static int fifo_address_create( |
758 | const char *path, | |
759 | mode_t directory_mode, | |
760 | mode_t socket_mode, | |
b15bdda8 LP |
761 | int *_fd) { |
762 | ||
7a58bfa4 | 763 | int fd = -1, r = 0; |
b15bdda8 LP |
764 | struct stat st; |
765 | mode_t old_mask; | |
766 | ||
767 | assert(path); | |
768 | assert(_fd); | |
769 | ||
d2e54fae | 770 | mkdir_parents_label(path, directory_mode); |
b15bdda8 | 771 | |
e9a5ef7c KS |
772 | r = label_context_set(path, S_IFIFO); |
773 | if (r < 0) | |
56cf987f | 774 | goto fail; |
b15bdda8 LP |
775 | |
776 | /* Enforce the right access mode for the fifo */ | |
777 | old_mask = umask(~ socket_mode); | |
778 | ||
779 | /* Include the original umask in our mask */ | |
780 | umask(~socket_mode | old_mask); | |
781 | ||
782 | r = mkfifo(path, socket_mode); | |
783 | umask(old_mask); | |
784 | ||
94bc2731 | 785 | if (r < 0 && errno != EEXIST) { |
b15bdda8 LP |
786 | r = -errno; |
787 | goto fail; | |
788 | } | |
789 | ||
790 | if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) { | |
791 | r = -errno; | |
792 | goto fail; | |
793 | } | |
794 | ||
e9a5ef7c | 795 | label_context_clear(); |
7a58bfa4 | 796 | |
b15bdda8 LP |
797 | if (fstat(fd, &st) < 0) { |
798 | r = -errno; | |
799 | goto fail; | |
800 | } | |
801 | ||
802 | if (!S_ISFIFO(st.st_mode) || | |
de0200fc | 803 | (st.st_mode & 0777) != (socket_mode & ~old_mask) || |
b15bdda8 LP |
804 | st.st_uid != getuid() || |
805 | st.st_gid != getgid()) { | |
806 | ||
807 | r = -EEXIST; | |
808 | goto fail; | |
809 | } | |
810 | ||
811 | *_fd = fd; | |
812 | return 0; | |
813 | ||
814 | fail: | |
e9a5ef7c | 815 | label_context_clear(); |
56cf987f | 816 | |
b15bdda8 LP |
817 | if (fd >= 0) |
818 | close_nointr_nofail(fd); | |
819 | ||
820 | return r; | |
821 | } | |
822 | ||
b0a3f2bc LP |
823 | static int special_address_create( |
824 | const char *path, | |
825 | int *_fd) { | |
826 | ||
827 | int fd = -1, r = 0; | |
828 | struct stat st; | |
829 | ||
830 | assert(path); | |
831 | assert(_fd); | |
832 | ||
833 | if ((fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) { | |
834 | r = -errno; | |
835 | goto fail; | |
836 | } | |
837 | ||
838 | if (fstat(fd, &st) < 0) { | |
839 | r = -errno; | |
840 | goto fail; | |
841 | } | |
842 | ||
843 | /* Check whether this is a /proc, /sys or /dev file or char device */ | |
844 | if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) { | |
845 | r = -EEXIST; | |
846 | goto fail; | |
847 | } | |
848 | ||
849 | *_fd = fd; | |
850 | return 0; | |
851 | ||
852 | fail: | |
853 | if (fd >= 0) | |
854 | close_nointr_nofail(fd); | |
855 | ||
856 | return r; | |
857 | } | |
858 | ||
916abb21 LP |
859 | static int mq_address_create( |
860 | const char *path, | |
861 | mode_t mq_mode, | |
862 | long maxmsg, | |
863 | long msgsize, | |
864 | int *_fd) { | |
865 | ||
866 | int fd = -1, r = 0; | |
867 | struct stat st; | |
868 | mode_t old_mask; | |
869 | struct mq_attr _attr, *attr = NULL; | |
870 | ||
871 | assert(path); | |
872 | assert(_fd); | |
873 | ||
874 | if (maxmsg > 0 && msgsize > 0) { | |
875 | zero(_attr); | |
876 | _attr.mq_flags = O_NONBLOCK; | |
877 | _attr.mq_maxmsg = maxmsg; | |
878 | _attr.mq_msgsize = msgsize; | |
879 | attr = &_attr; | |
880 | } | |
881 | ||
882 | /* Enforce the right access mode for the mq */ | |
883 | old_mask = umask(~ mq_mode); | |
884 | ||
885 | /* Include the original umask in our mask */ | |
886 | umask(~mq_mode | old_mask); | |
887 | ||
888 | fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr); | |
889 | umask(old_mask); | |
890 | ||
8ea913b2 | 891 | if (fd < 0) { |
916abb21 LP |
892 | r = -errno; |
893 | goto fail; | |
894 | } | |
895 | ||
896 | if (fstat(fd, &st) < 0) { | |
897 | r = -errno; | |
898 | goto fail; | |
899 | } | |
900 | ||
901 | if ((st.st_mode & 0777) != (mq_mode & ~old_mask) || | |
902 | st.st_uid != getuid() || | |
903 | st.st_gid != getgid()) { | |
904 | ||
905 | r = -EEXIST; | |
906 | goto fail; | |
907 | } | |
908 | ||
909 | *_fd = fd; | |
910 | return 0; | |
911 | ||
912 | fail: | |
913 | if (fd >= 0) | |
914 | close_nointr_nofail(fd); | |
915 | ||
916 | return r; | |
917 | } | |
918 | ||
034c6ed7 | 919 | static int socket_open_fds(Socket *s) { |
83c60c9f LP |
920 | SocketPort *p; |
921 | int r; | |
56cf987f | 922 | char *label = NULL; |
049f8642 | 923 | bool know_label = false; |
83c60c9f LP |
924 | |
925 | assert(s); | |
926 | ||
034c6ed7 | 927 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f | 928 | |
034c6ed7 LP |
929 | if (p->fd >= 0) |
930 | continue; | |
83c60c9f LP |
931 | |
932 | if (p->type == SOCKET_SOCKET) { | |
933 | ||
049f8642 LP |
934 | if (!know_label) { |
935 | ||
936 | if ((r = socket_instantiate_service(s)) < 0) | |
937 | return r; | |
938 | ||
57020a3a LP |
939 | if (UNIT_DEREF(s->service) && |
940 | SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) { | |
941 | r = label_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label); | |
189583d7 LP |
942 | |
943 | if (r < 0) { | |
a7444eda LP |
944 | if (r != -EPERM) |
945 | return r; | |
946 | } | |
189583d7 | 947 | } |
049f8642 LP |
948 | |
949 | know_label = true; | |
950 | } | |
951 | ||
b5a0699f LP |
952 | if ((r = socket_address_listen( |
953 | &p->address, | |
954 | s->backlog, | |
955 | s->bind_ipv6_only, | |
956 | s->bind_to_device, | |
4fd5948e | 957 | s->free_bind, |
6b6d2dee | 958 | s->transparent, |
b5a0699f LP |
959 | s->directory_mode, |
960 | s->socket_mode, | |
56cf987f | 961 | label, |
b5a0699f | 962 | &p->fd)) < 0) |
83c60c9f LP |
963 | goto rollback; |
964 | ||
4fd5948e LP |
965 | socket_apply_socket_options(s, p->fd); |
966 | ||
b0a3f2bc LP |
967 | } else if (p->type == SOCKET_SPECIAL) { |
968 | ||
969 | if ((r = special_address_create( | |
970 | p->path, | |
971 | &p->fd)) < 0) | |
972 | goto rollback; | |
973 | ||
b15bdda8 | 974 | } else if (p->type == SOCKET_FIFO) { |
83c60c9f | 975 | |
b15bdda8 LP |
976 | if ((r = fifo_address_create( |
977 | p->path, | |
978 | s->directory_mode, | |
979 | s->socket_mode, | |
b15bdda8 | 980 | &p->fd)) < 0) |
83c60c9f | 981 | goto rollback; |
83c60c9f | 982 | |
b15bdda8 | 983 | socket_apply_fifo_options(s, p->fd); |
916abb21 | 984 | } else if (p->type == SOCKET_MQUEUE) { |
83c60c9f | 985 | |
916abb21 LP |
986 | if ((r = mq_address_create( |
987 | p->path, | |
988 | s->socket_mode, | |
989 | s->mq_maxmsg, | |
990 | s->mq_msgsize, | |
991 | &p->fd)) < 0) | |
992 | goto rollback; | |
b15bdda8 LP |
993 | } else |
994 | assert_not_reached("Unknown port type"); | |
034c6ed7 LP |
995 | } |
996 | ||
56cf987f | 997 | label_free(label); |
034c6ed7 LP |
998 | return 0; |
999 | ||
1000 | rollback: | |
1001 | socket_close_fds(s); | |
56cf987f | 1002 | label_free(label); |
034c6ed7 LP |
1003 | return r; |
1004 | } | |
1005 | ||
1006 | static void socket_unwatch_fds(Socket *s) { | |
1007 | SocketPort *p; | |
9152c765 | 1008 | |
034c6ed7 LP |
1009 | assert(s); |
1010 | ||
1011 | LIST_FOREACH(port, p, s->ports) { | |
1012 | if (p->fd < 0) | |
1013 | continue; | |
1014 | ||
acbb0225 | 1015 | unit_unwatch_fd(UNIT(s), &p->fd_watch); |
83c60c9f | 1016 | } |
034c6ed7 LP |
1017 | } |
1018 | ||
1019 | static int socket_watch_fds(Socket *s) { | |
1020 | SocketPort *p; | |
1021 | int r; | |
1022 | ||
1023 | assert(s); | |
83c60c9f | 1024 | |
034c6ed7 LP |
1025 | LIST_FOREACH(port, p, s->ports) { |
1026 | if (p->fd < 0) | |
1027 | continue; | |
1028 | ||
cabab516 | 1029 | p->fd_watch.socket_accept = |
4f2d528d | 1030 | s->accept && |
dd5ad9d4 | 1031 | p->type == SOCKET_SOCKET && |
4f2d528d LP |
1032 | socket_address_can_accept(&p->address); |
1033 | ||
f94ea366 | 1034 | if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0) |
034c6ed7 LP |
1035 | goto fail; |
1036 | } | |
83c60c9f | 1037 | |
542563ba | 1038 | return 0; |
83c60c9f | 1039 | |
034c6ed7 LP |
1040 | fail: |
1041 | socket_unwatch_fds(s); | |
1042 | return r; | |
1043 | } | |
1044 | ||
1045 | static void socket_set_state(Socket *s, SocketState state) { | |
1046 | SocketState old_state; | |
1047 | assert(s); | |
1048 | ||
1049 | old_state = s->state; | |
1050 | s->state = state; | |
1051 | ||
1052 | if (state != SOCKET_START_PRE && | |
1053 | state != SOCKET_START_POST && | |
1054 | state != SOCKET_STOP_PRE && | |
1055 | state != SOCKET_STOP_PRE_SIGTERM && | |
1056 | state != SOCKET_STOP_PRE_SIGKILL && | |
1057 | state != SOCKET_STOP_POST && | |
80876c20 LP |
1058 | state != SOCKET_FINAL_SIGTERM && |
1059 | state != SOCKET_FINAL_SIGKILL) { | |
acbb0225 | 1060 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
5e94833f | 1061 | socket_unwatch_control_pid(s); |
034c6ed7 | 1062 | s->control_command = NULL; |
a16e1123 | 1063 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
e537352b | 1064 | } |
034c6ed7 | 1065 | |
a16e1123 LP |
1066 | if (state != SOCKET_LISTENING) |
1067 | socket_unwatch_fds(s); | |
1068 | ||
034c6ed7 LP |
1069 | if (state != SOCKET_START_POST && |
1070 | state != SOCKET_LISTENING && | |
1071 | state != SOCKET_RUNNING && | |
1072 | state != SOCKET_STOP_PRE && | |
1073 | state != SOCKET_STOP_PRE_SIGTERM && | |
1074 | state != SOCKET_STOP_PRE_SIGKILL) | |
1075 | socket_close_fds(s); | |
1076 | ||
e537352b | 1077 | if (state != old_state) |
40d50879 | 1078 | log_debug("%s changed %s -> %s", |
1124fe6f | 1079 | UNIT(s)->id, |
a16e1123 LP |
1080 | socket_state_to_string(old_state), |
1081 | socket_state_to_string(state)); | |
acbb0225 | 1082 | |
e2f3b44c | 1083 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
1084 | } |
1085 | ||
a16e1123 LP |
1086 | static int socket_coldplug(Unit *u) { |
1087 | Socket *s = SOCKET(u); | |
1088 | int r; | |
1089 | ||
1090 | assert(s); | |
1091 | assert(s->state == SOCKET_DEAD); | |
1092 | ||
1093 | if (s->deserialized_state != s->state) { | |
1094 | ||
1095 | if (s->deserialized_state == SOCKET_START_PRE || | |
1096 | s->deserialized_state == SOCKET_START_POST || | |
1097 | s->deserialized_state == SOCKET_STOP_PRE || | |
1098 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
1099 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL || | |
1100 | s->deserialized_state == SOCKET_STOP_POST || | |
1101 | s->deserialized_state == SOCKET_FINAL_SIGTERM || | |
1102 | s->deserialized_state == SOCKET_FINAL_SIGKILL) { | |
1103 | ||
1104 | if (s->control_pid <= 0) | |
1105 | return -EBADMSG; | |
1106 | ||
1107 | if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) | |
1108 | return r; | |
1109 | ||
1110 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
1111 | return r; | |
1112 | } | |
1113 | ||
1114 | if (s->deserialized_state == SOCKET_START_POST || | |
1115 | s->deserialized_state == SOCKET_LISTENING || | |
1116 | s->deserialized_state == SOCKET_RUNNING || | |
1117 | s->deserialized_state == SOCKET_STOP_PRE || | |
1118 | s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || | |
1119 | s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) | |
1120 | if ((r = socket_open_fds(s)) < 0) | |
1121 | return r; | |
1122 | ||
1123 | if (s->deserialized_state == SOCKET_LISTENING) | |
1124 | if ((r = socket_watch_fds(s)) < 0) | |
1125 | return r; | |
1126 | ||
1127 | socket_set_state(s, s->deserialized_state); | |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
e537352b | 1133 | static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { |
034c6ed7 LP |
1134 | pid_t pid; |
1135 | int r; | |
9e2f7c11 | 1136 | char **argv; |
034c6ed7 LP |
1137 | |
1138 | assert(s); | |
1139 | assert(c); | |
1140 | assert(_pid); | |
1141 | ||
e537352b LP |
1142 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
1143 | goto fail; | |
034c6ed7 | 1144 | |
9e2f7c11 LP |
1145 | if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { |
1146 | r = -ENOMEM; | |
1147 | goto fail; | |
1148 | } | |
1149 | ||
1150 | r = exec_spawn(c, | |
1151 | argv, | |
1152 | &s->exec_context, | |
1153 | NULL, 0, | |
1124fe6f | 1154 | UNIT(s)->manager->environment, |
9e2f7c11 LP |
1155 | true, |
1156 | true, | |
1e3ad081 | 1157 | true, |
1124fe6f MS |
1158 | UNIT(s)->manager->confirm_spawn, |
1159 | UNIT(s)->cgroup_bondings, | |
1160 | UNIT(s)->cgroup_attributes, | |
ecedd90f | 1161 | NULL, |
62bca2c6 | 1162 | UNIT(s)->id, |
f2b68789 | 1163 | NULL, |
9e2f7c11 LP |
1164 | &pid); |
1165 | ||
1166 | strv_free(argv); | |
1167 | if (r < 0) | |
034c6ed7 LP |
1168 | goto fail; |
1169 | ||
87f0e418 | 1170 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) |
034c6ed7 LP |
1171 | /* FIXME: we need to do something here */ |
1172 | goto fail; | |
83c60c9f | 1173 | |
034c6ed7 LP |
1174 | *_pid = pid; |
1175 | ||
1176 | return 0; | |
1177 | ||
1178 | fail: | |
e537352b | 1179 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
83c60c9f LP |
1180 | |
1181 | return r; | |
542563ba LP |
1182 | } |
1183 | ||
cfc4eb4c | 1184 | static void socket_enter_dead(Socket *s, SocketResult f) { |
034c6ed7 LP |
1185 | assert(s); |
1186 | ||
cfc4eb4c LP |
1187 | if (f != SOCKET_SUCCESS) |
1188 | s->result = f; | |
034c6ed7 | 1189 | |
cfc4eb4c | 1190 | socket_set_state(s, s->result != SOCKET_SUCCESS ? SOCKET_FAILED : SOCKET_DEAD); |
034c6ed7 LP |
1191 | } |
1192 | ||
cfc4eb4c | 1193 | static void socket_enter_signal(Socket *s, SocketState state, SocketResult f); |
80876c20 | 1194 | |
cfc4eb4c | 1195 | static void socket_enter_stop_post(Socket *s, SocketResult f) { |
034c6ed7 LP |
1196 | int r; |
1197 | assert(s); | |
1198 | ||
cfc4eb4c LP |
1199 | if (f != SOCKET_SUCCESS) |
1200 | s->result = f; | |
034c6ed7 | 1201 | |
5e94833f LP |
1202 | socket_unwatch_control_pid(s); |
1203 | ||
a16e1123 LP |
1204 | s->control_command_id = SOCKET_EXEC_STOP_POST; |
1205 | ||
80876c20 | 1206 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) { |
e537352b | 1207 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
1208 | goto fail; |
1209 | ||
80876c20 LP |
1210 | socket_set_state(s, SOCKET_STOP_POST); |
1211 | } else | |
cfc4eb4c | 1212 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_SUCCESS); |
034c6ed7 LP |
1213 | |
1214 | return; | |
1215 | ||
1216 | fail: | |
1124fe6f | 1217 | log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r)); |
cfc4eb4c | 1218 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1219 | } |
1220 | ||
cfc4eb4c | 1221 | static void socket_enter_signal(Socket *s, SocketState state, SocketResult f) { |
034c6ed7 | 1222 | int r; |
ca949c9d LP |
1223 | Set *pid_set = NULL; |
1224 | bool wait_for_exit = false; | |
034c6ed7 LP |
1225 | |
1226 | assert(s); | |
1227 | ||
cfc4eb4c LP |
1228 | if (f != SOCKET_SUCCESS) |
1229 | s->result = f; | |
034c6ed7 | 1230 | |
4819ff03 LP |
1231 | if (s->kill_context.kill_mode != KILL_NONE) { |
1232 | int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? s->kill_context.kill_signal : SIGKILL; | |
034c6ed7 | 1233 | |
ca949c9d | 1234 | if (s->control_pid > 0) { |
cd25cce9 | 1235 | if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH) |
50159e6a | 1236 | |
ca949c9d LP |
1237 | log_warning("Failed to kill control process %li: %m", (long) s->control_pid); |
1238 | else | |
1239 | wait_for_exit = true; | |
034c6ed7 | 1240 | } |
50159e6a | 1241 | |
4819ff03 | 1242 | if (s->kill_context.kill_mode == KILL_CONTROL_GROUP) { |
ca949c9d LP |
1243 | |
1244 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { | |
1245 | r = -ENOMEM; | |
50159e6a LP |
1246 | goto fail; |
1247 | } | |
ca949c9d LP |
1248 | |
1249 | /* Exclude the control pid from being killed via the cgroup */ | |
1250 | if (s->control_pid > 0) | |
1251 | if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) | |
1252 | goto fail; | |
1253 | ||
88f3e0c9 | 1254 | r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL); |
ecedd90f | 1255 | if (r < 0) { |
ca949c9d LP |
1256 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) |
1257 | log_warning("Failed to kill control group: %s", strerror(-r)); | |
1258 | } else if (r > 0) | |
1259 | wait_for_exit = true; | |
1260 | ||
1261 | set_free(pid_set); | |
da19d5c1 | 1262 | pid_set = NULL; |
ca949c9d | 1263 | } |
d6ea93e3 | 1264 | } |
034c6ed7 | 1265 | |
ca949c9d | 1266 | if (wait_for_exit) { |
80876c20 LP |
1267 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
1268 | goto fail; | |
d6ea93e3 | 1269 | |
80876c20 LP |
1270 | socket_set_state(s, state); |
1271 | } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
cfc4eb4c | 1272 | socket_enter_stop_post(s, SOCKET_SUCCESS); |
80876c20 | 1273 | else |
cfc4eb4c | 1274 | socket_enter_dead(s, SOCKET_SUCCESS); |
034c6ed7 LP |
1275 | |
1276 | return; | |
1277 | ||
1278 | fail: | |
1124fe6f | 1279 | log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); |
034c6ed7 LP |
1280 | |
1281 | if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
cfc4eb4c | 1282 | socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1283 | else |
cfc4eb4c | 1284 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
ca949c9d LP |
1285 | |
1286 | if (pid_set) | |
1287 | set_free(pid_set); | |
034c6ed7 LP |
1288 | } |
1289 | ||
cfc4eb4c | 1290 | static void socket_enter_stop_pre(Socket *s, SocketResult f) { |
034c6ed7 LP |
1291 | int r; |
1292 | assert(s); | |
1293 | ||
cfc4eb4c LP |
1294 | if (f != SOCKET_SUCCESS) |
1295 | s->result = f; | |
034c6ed7 | 1296 | |
5e94833f LP |
1297 | socket_unwatch_control_pid(s); |
1298 | ||
a16e1123 LP |
1299 | s->control_command_id = SOCKET_EXEC_STOP_PRE; |
1300 | ||
80876c20 | 1301 | if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) { |
e537352b | 1302 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
1303 | goto fail; |
1304 | ||
80876c20 LP |
1305 | socket_set_state(s, SOCKET_STOP_PRE); |
1306 | } else | |
cfc4eb4c | 1307 | socket_enter_stop_post(s, SOCKET_SUCCESS); |
034c6ed7 LP |
1308 | |
1309 | return; | |
1310 | ||
1311 | fail: | |
1124fe6f | 1312 | log_warning("%s failed to run 'stop-pre' task: %s", UNIT(s)->id, strerror(-r)); |
cfc4eb4c | 1313 | socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1314 | } |
1315 | ||
e9af15c3 LP |
1316 | static void socket_enter_listening(Socket *s) { |
1317 | int r; | |
1318 | assert(s); | |
1319 | ||
cfc4eb4c LP |
1320 | r = socket_watch_fds(s); |
1321 | if (r < 0) { | |
1124fe6f | 1322 | log_warning("%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); |
e9af15c3 LP |
1323 | goto fail; |
1324 | } | |
1325 | ||
1326 | socket_set_state(s, SOCKET_LISTENING); | |
1327 | return; | |
1328 | ||
1329 | fail: | |
cfc4eb4c | 1330 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
e9af15c3 LP |
1331 | } |
1332 | ||
034c6ed7 LP |
1333 | static void socket_enter_start_post(Socket *s) { |
1334 | int r; | |
1335 | assert(s); | |
1336 | ||
cfc4eb4c LP |
1337 | r = socket_open_fds(s); |
1338 | if (r < 0) { | |
1124fe6f | 1339 | log_warning("%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r)); |
034c6ed7 LP |
1340 | goto fail; |
1341 | } | |
1342 | ||
5e94833f LP |
1343 | socket_unwatch_control_pid(s); |
1344 | ||
a16e1123 LP |
1345 | s->control_command_id = SOCKET_EXEC_START_POST; |
1346 | ||
80876c20 | 1347 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) { |
cfc4eb4c LP |
1348 | r = socket_spawn(s, s->control_command, &s->control_pid); |
1349 | if (r < 0) { | |
1124fe6f | 1350 | log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); |
034c6ed7 LP |
1351 | goto fail; |
1352 | } | |
1353 | ||
80876c20 LP |
1354 | socket_set_state(s, SOCKET_START_POST); |
1355 | } else | |
e9af15c3 | 1356 | socket_enter_listening(s); |
034c6ed7 LP |
1357 | |
1358 | return; | |
1359 | ||
1360 | fail: | |
cfc4eb4c | 1361 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1362 | } |
1363 | ||
1364 | static void socket_enter_start_pre(Socket *s) { | |
1365 | int r; | |
1366 | assert(s); | |
1367 | ||
5e94833f LP |
1368 | socket_unwatch_control_pid(s); |
1369 | ||
a16e1123 LP |
1370 | s->control_command_id = SOCKET_EXEC_START_PRE; |
1371 | ||
80876c20 | 1372 | if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) { |
e537352b | 1373 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
1374 | goto fail; |
1375 | ||
80876c20 LP |
1376 | socket_set_state(s, SOCKET_START_PRE); |
1377 | } else | |
034c6ed7 LP |
1378 | socket_enter_start_post(s); |
1379 | ||
1380 | return; | |
1381 | ||
1382 | fail: | |
1124fe6f | 1383 | log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); |
cfc4eb4c | 1384 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1385 | } |
1386 | ||
4f2d528d | 1387 | static void socket_enter_running(Socket *s, int cfd) { |
034c6ed7 | 1388 | int r; |
398ef8ba | 1389 | DBusError error; |
034c6ed7 LP |
1390 | |
1391 | assert(s); | |
398ef8ba | 1392 | dbus_error_init(&error); |
034c6ed7 | 1393 | |
ba3e67a7 LP |
1394 | /* We don't take connections anymore if we are supposed to |
1395 | * shut down anyway */ | |
18ffdfda | 1396 | if (unit_pending_inactive(UNIT(s))) { |
1124fe6f | 1397 | log_debug("Suppressing connection request on %s since unit stop is scheduled.", UNIT(s)->id); |
5d909e3e | 1398 | |
7c610628 LP |
1399 | if (cfd >= 0) |
1400 | close_nointr_nofail(cfd); | |
1401 | else { | |
1402 | /* Flush all sockets by closing and reopening them */ | |
1403 | socket_close_fds(s); | |
1404 | ||
1a710b43 MS |
1405 | r = socket_watch_fds(s); |
1406 | if (r < 0) { | |
1124fe6f | 1407 | log_warning("%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); |
cfc4eb4c | 1408 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
7c610628 LP |
1409 | } |
1410 | } | |
1411 | ||
ba3e67a7 LP |
1412 | return; |
1413 | } | |
1414 | ||
4f2d528d | 1415 | if (cfd < 0) { |
57020a3a LP |
1416 | Iterator i; |
1417 | Unit *u; | |
f976f3f6 | 1418 | bool pending = false; |
f976f3f6 LP |
1419 | |
1420 | /* If there's already a start pending don't bother to | |
1421 | * do anything */ | |
1124fe6f | 1422 | SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERS], i) |
57020a3a LP |
1423 | if (unit_pending_active(u)) { |
1424 | pending = true; | |
1425 | break; | |
1426 | } | |
f976f3f6 | 1427 | |
1a710b43 MS |
1428 | if (!pending) { |
1429 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT_DEREF(s->service), JOB_REPLACE, true, &error, NULL); | |
1430 | if (r < 0) | |
f976f3f6 | 1431 | goto fail; |
1a710b43 | 1432 | } |
4f2d528d LP |
1433 | |
1434 | socket_set_state(s, SOCKET_RUNNING); | |
1435 | } else { | |
b4f10a5e | 1436 | char *prefix, *instance = NULL, *name; |
b15bdda8 | 1437 | Service *service; |
4f2d528d | 1438 | |
6cf6bbc2 LP |
1439 | if (s->n_connections >= s->max_connections) { |
1440 | log_warning("Too many incoming connections (%u)", s->n_connections); | |
1441 | close_nointr_nofail(cfd); | |
1442 | return; | |
1443 | } | |
1444 | ||
1a710b43 MS |
1445 | r = socket_instantiate_service(s); |
1446 | if (r < 0) | |
b15bdda8 LP |
1447 | goto fail; |
1448 | ||
1a710b43 MS |
1449 | r = instance_from_socket(cfd, s->n_accepted, &instance); |
1450 | if (r < 0) { | |
1451 | if (r != -ENOTCONN) | |
1452 | goto fail; | |
1453 | ||
1454 | /* ENOTCONN is legitimate if TCP RST was received. | |
1455 | * This connection is over, but the socket unit lives on. */ | |
1456 | close_nointr_nofail(cfd); | |
1457 | return; | |
1458 | } | |
4f2d528d | 1459 | |
1a710b43 MS |
1460 | prefix = unit_name_to_prefix(UNIT(s)->id); |
1461 | if (!prefix) { | |
4f2d528d LP |
1462 | free(instance); |
1463 | r = -ENOMEM; | |
1464 | goto fail; | |
1465 | } | |
1466 | ||
1467 | name = unit_name_build(prefix, instance, ".service"); | |
1468 | free(prefix); | |
1469 | free(instance); | |
1470 | ||
b6dbbe1c | 1471 | if (!name) { |
4f2d528d | 1472 | r = -ENOMEM; |
b6dbbe1c LP |
1473 | goto fail; |
1474 | } | |
4f2d528d | 1475 | |
1a710b43 MS |
1476 | r = unit_add_name(UNIT_DEREF(s->service), name); |
1477 | if (r < 0) { | |
b15bdda8 | 1478 | free(name); |
4f2d528d | 1479 | goto fail; |
b15bdda8 LP |
1480 | } |
1481 | ||
57020a3a LP |
1482 | service = SERVICE(UNIT_DEREF(s->service)); |
1483 | unit_ref_unset(&s->service); | |
b15bdda8 | 1484 | s->n_accepted ++; |
4f2d528d | 1485 | |
1124fe6f | 1486 | UNIT(service)->no_gc = false; |
6c073082 | 1487 | |
b15bdda8 LP |
1488 | unit_choose_id(UNIT(service), name); |
1489 | free(name); | |
1490 | ||
1a710b43 MS |
1491 | r = service_set_socket_fd(service, cfd, s); |
1492 | if (r < 0) | |
4f2d528d LP |
1493 | goto fail; |
1494 | ||
1495 | cfd = -1; | |
6cf6bbc2 LP |
1496 | s->n_connections ++; |
1497 | ||
1a710b43 MS |
1498 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL); |
1499 | if (r < 0) | |
4f2d528d | 1500 | goto fail; |
c4e2ceae LP |
1501 | |
1502 | /* Notify clients about changed counters */ | |
1503 | unit_add_to_dbus_queue(UNIT(s)); | |
4f2d528d | 1504 | } |
034c6ed7 | 1505 | |
034c6ed7 LP |
1506 | return; |
1507 | ||
1508 | fail: | |
1124fe6f | 1509 | log_warning("%s failed to queue socket startup job: %s", UNIT(s)->id, bus_error(&error, r)); |
60089004 | 1510 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
4f2d528d LP |
1511 | |
1512 | if (cfd >= 0) | |
1513 | close_nointr_nofail(cfd); | |
398ef8ba LP |
1514 | |
1515 | dbus_error_free(&error); | |
034c6ed7 LP |
1516 | } |
1517 | ||
cfc4eb4c | 1518 | static void socket_run_next(Socket *s) { |
034c6ed7 LP |
1519 | int r; |
1520 | ||
1521 | assert(s); | |
1522 | assert(s->control_command); | |
1523 | assert(s->control_command->command_next); | |
1524 | ||
5e94833f LP |
1525 | socket_unwatch_control_pid(s); |
1526 | ||
034c6ed7 LP |
1527 | s->control_command = s->control_command->command_next; |
1528 | ||
e537352b | 1529 | if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) |
034c6ed7 LP |
1530 | goto fail; |
1531 | ||
1532 | return; | |
1533 | ||
1534 | fail: | |
1124fe6f | 1535 | log_warning("%s failed to run next task: %s", UNIT(s)->id, strerror(-r)); |
80876c20 LP |
1536 | |
1537 | if (s->state == SOCKET_START_POST) | |
cfc4eb4c | 1538 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1539 | else if (s->state == SOCKET_STOP_POST) |
cfc4eb4c | 1540 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1541 | else |
cfc4eb4c | 1542 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1543 | } |
1544 | ||
87f0e418 LP |
1545 | static int socket_start(Unit *u) { |
1546 | Socket *s = SOCKET(u); | |
83c60c9f LP |
1547 | |
1548 | assert(s); | |
1549 | ||
034c6ed7 LP |
1550 | /* We cannot fulfill this request right now, try again later |
1551 | * please! */ | |
1552 | if (s->state == SOCKET_STOP_PRE || | |
1553 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
1554 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
1555 | s->state == SOCKET_STOP_POST || | |
80876c20 LP |
1556 | s->state == SOCKET_FINAL_SIGTERM || |
1557 | s->state == SOCKET_FINAL_SIGKILL) | |
034c6ed7 LP |
1558 | return -EAGAIN; |
1559 | ||
83c60c9f LP |
1560 | if (s->state == SOCKET_START_PRE || |
1561 | s->state == SOCKET_START_POST) | |
034c6ed7 | 1562 | return 0; |
83c60c9f | 1563 | |
034c6ed7 | 1564 | /* Cannot run this without the service being around */ |
57020a3a LP |
1565 | if (UNIT_DEREF(s->service)) { |
1566 | Service *service; | |
1567 | ||
1568 | service = SERVICE(UNIT_DEREF(s->service)); | |
1569 | ||
1124fe6f MS |
1570 | if (UNIT(service)->load_state != UNIT_LOADED) { |
1571 | log_error("Socket service %s not loaded, refusing.", UNIT(service)->id); | |
4f2d528d | 1572 | return -ENOENT; |
4ac9236f | 1573 | } |
4f2d528d | 1574 | |
35b8ca3a | 1575 | /* If the service is already active we cannot start the |
4f2d528d | 1576 | * socket */ |
57020a3a LP |
1577 | if (service->state != SERVICE_DEAD && |
1578 | service->state != SERVICE_FAILED && | |
1579 | service->state != SERVICE_AUTO_RESTART) { | |
1124fe6f | 1580 | log_error("Socket service %s already active, refusing.", UNIT(service)->id); |
4f2d528d | 1581 | return -EBUSY; |
4ac9236f | 1582 | } |
7b4bf06b LP |
1583 | |
1584 | #ifdef HAVE_SYSV_COMPAT | |
1b64d026 | 1585 | if (service->is_sysv) { |
7b4bf06b LP |
1586 | log_error("Using SysV services for socket activation is not supported. Refusing."); |
1587 | return -ENOENT; | |
1588 | } | |
1589 | #endif | |
4f2d528d | 1590 | } |
e537352b | 1591 | |
fdf20a31 | 1592 | assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED); |
83c60c9f | 1593 | |
cfc4eb4c | 1594 | s->result = SOCKET_SUCCESS; |
034c6ed7 LP |
1595 | socket_enter_start_pre(s); |
1596 | return 0; | |
1597 | } | |
83c60c9f | 1598 | |
87f0e418 LP |
1599 | static int socket_stop(Unit *u) { |
1600 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
1601 | |
1602 | assert(s); | |
1603 | ||
e537352b LP |
1604 | /* Already on it */ |
1605 | if (s->state == SOCKET_STOP_PRE || | |
1606 | s->state == SOCKET_STOP_PRE_SIGTERM || | |
1607 | s->state == SOCKET_STOP_PRE_SIGKILL || | |
1608 | s->state == SOCKET_STOP_POST || | |
80876c20 | 1609 | s->state == SOCKET_FINAL_SIGTERM || |
3f6c78dc | 1610 | s->state == SOCKET_FINAL_SIGKILL) |
e537352b LP |
1611 | return 0; |
1612 | ||
3f6c78dc LP |
1613 | /* If there's already something running we go directly into |
1614 | * kill mode. */ | |
1615 | if (s->state == SOCKET_START_PRE || | |
1616 | s->state == SOCKET_START_POST) { | |
cfc4eb4c | 1617 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_SUCCESS); |
3f6c78dc LP |
1618 | return -EAGAIN; |
1619 | } | |
1620 | ||
034c6ed7 | 1621 | assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING); |
83c60c9f | 1622 | |
cfc4eb4c | 1623 | socket_enter_stop_pre(s, SOCKET_SUCCESS); |
542563ba LP |
1624 | return 0; |
1625 | } | |
1626 | ||
a16e1123 LP |
1627 | static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { |
1628 | Socket *s = SOCKET(u); | |
1629 | SocketPort *p; | |
1630 | int r; | |
1631 | ||
1632 | assert(u); | |
1633 | assert(f); | |
1634 | assert(fds); | |
1635 | ||
1636 | unit_serialize_item(u, f, "state", socket_state_to_string(s->state)); | |
cfc4eb4c | 1637 | unit_serialize_item(u, f, "result", socket_result_to_string(s->result)); |
a16e1123 LP |
1638 | unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted); |
1639 | ||
1640 | if (s->control_pid > 0) | |
5925dd3c | 1641 | unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid); |
a16e1123 LP |
1642 | |
1643 | if (s->control_command_id >= 0) | |
1644 | unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id)); | |
1645 | ||
1646 | LIST_FOREACH(port, p, s->ports) { | |
1647 | int copy; | |
1648 | ||
1649 | if (p->fd < 0) | |
1650 | continue; | |
1651 | ||
1652 | if ((copy = fdset_put_dup(fds, p->fd)) < 0) | |
1653 | return copy; | |
1654 | ||
1655 | if (p->type == SOCKET_SOCKET) { | |
1656 | char *t; | |
1657 | ||
1658 | if ((r = socket_address_print(&p->address, &t)) < 0) | |
1659 | return r; | |
1660 | ||
7a22745a LP |
1661 | if (socket_address_family(&p->address) == AF_NETLINK) |
1662 | unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t); | |
1663 | else | |
1664 | unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t); | |
a16e1123 | 1665 | free(t); |
b0a3f2bc LP |
1666 | } else if (p->type == SOCKET_SPECIAL) |
1667 | unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path); | |
1668 | else { | |
a16e1123 LP |
1669 | assert(p->type == SOCKET_FIFO); |
1670 | unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path); | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | return 0; | |
1675 | } | |
1676 | ||
1677 | static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
1678 | Socket *s = SOCKET(u); | |
a16e1123 LP |
1679 | |
1680 | assert(u); | |
1681 | assert(key); | |
1682 | assert(value); | |
1683 | assert(fds); | |
1684 | ||
1685 | if (streq(key, "state")) { | |
1686 | SocketState state; | |
1687 | ||
1688 | if ((state = socket_state_from_string(value)) < 0) | |
1689 | log_debug("Failed to parse state value %s", value); | |
1690 | else | |
1691 | s->deserialized_state = state; | |
cfc4eb4c LP |
1692 | } else if (streq(key, "result")) { |
1693 | SocketResult f; | |
a16e1123 | 1694 | |
cfc4eb4c LP |
1695 | f = socket_result_from_string(value); |
1696 | if (f < 0) | |
1697 | log_debug("Failed to parse result value %s", value); | |
1698 | else if (f != SOCKET_SUCCESS) | |
1699 | s->result = f; | |
a16e1123 LP |
1700 | |
1701 | } else if (streq(key, "n-accepted")) { | |
1702 | unsigned k; | |
1703 | ||
e364ad06 | 1704 | if (safe_atou(value, &k) < 0) |
a16e1123 LP |
1705 | log_debug("Failed to parse n-accepted value %s", value); |
1706 | else | |
1707 | s->n_accepted += k; | |
1708 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 1709 | pid_t pid; |
a16e1123 | 1710 | |
e364ad06 | 1711 | if (parse_pid(value, &pid) < 0) |
a16e1123 LP |
1712 | log_debug("Failed to parse control-pid value %s", value); |
1713 | else | |
5925dd3c | 1714 | s->control_pid = pid; |
a16e1123 LP |
1715 | } else if (streq(key, "control-command")) { |
1716 | SocketExecCommand id; | |
1717 | ||
1718 | if ((id = socket_exec_command_from_string(value)) < 0) | |
1719 | log_debug("Failed to parse exec-command value %s", value); | |
1720 | else { | |
1721 | s->control_command_id = id; | |
1722 | s->control_command = s->exec_command[id]; | |
1723 | } | |
1724 | } else if (streq(key, "fifo")) { | |
1725 | int fd, skip = 0; | |
1726 | SocketPort *p; | |
1727 | ||
1728 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1729 | log_debug("Failed to parse fifo value %s", value); | |
1730 | else { | |
1731 | ||
1732 | LIST_FOREACH(port, p, s->ports) | |
b0a3f2bc LP |
1733 | if (p->type == SOCKET_FIFO && |
1734 | streq_ptr(p->path, value+skip)) | |
1735 | break; | |
1736 | ||
1737 | if (p) { | |
1738 | if (p->fd >= 0) | |
1739 | close_nointr_nofail(p->fd); | |
1740 | p->fd = fdset_remove(fds, fd); | |
1741 | } | |
1742 | } | |
1743 | ||
1744 | } else if (streq(key, "special")) { | |
1745 | int fd, skip = 0; | |
1746 | SocketPort *p; | |
1747 | ||
1748 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1749 | log_debug("Failed to parse special value %s", value); | |
1750 | else { | |
1751 | ||
1752 | LIST_FOREACH(port, p, s->ports) | |
1753 | if (p->type == SOCKET_SPECIAL && | |
1754 | streq_ptr(p->path, value+skip)) | |
a16e1123 LP |
1755 | break; |
1756 | ||
1757 | if (p) { | |
1758 | if (p->fd >= 0) | |
1759 | close_nointr_nofail(p->fd); | |
1760 | p->fd = fdset_remove(fds, fd); | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | } else if (streq(key, "socket")) { | |
27ca8d7a | 1765 | int fd, type, skip = 0; |
a16e1123 LP |
1766 | SocketPort *p; |
1767 | ||
27ca8d7a | 1768 | if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd)) |
a16e1123 LP |
1769 | log_debug("Failed to parse socket value %s", value); |
1770 | else { | |
1771 | ||
1772 | LIST_FOREACH(port, p, s->ports) | |
27ca8d7a | 1773 | if (socket_address_is(&p->address, value+skip, type)) |
a16e1123 LP |
1774 | break; |
1775 | ||
1776 | if (p) { | |
1777 | if (p->fd >= 0) | |
1778 | close_nointr_nofail(p->fd); | |
1779 | p->fd = fdset_remove(fds, fd); | |
1780 | } | |
1781 | } | |
1782 | ||
7a22745a LP |
1783 | } else if (streq(key, "netlink")) { |
1784 | int fd, skip = 0; | |
1785 | SocketPort *p; | |
1786 | ||
1787 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
1788 | log_debug("Failed to parse socket value %s", value); | |
1789 | else { | |
1790 | ||
1791 | LIST_FOREACH(port, p, s->ports) | |
1792 | if (socket_address_is_netlink(&p->address, value+skip)) | |
1793 | break; | |
1794 | ||
1795 | if (p) { | |
1796 | if (p->fd >= 0) | |
1797 | close_nointr_nofail(p->fd); | |
1798 | p->fd = fdset_remove(fds, fd); | |
1799 | } | |
1800 | } | |
1801 | ||
a16e1123 LP |
1802 | } else |
1803 | log_debug("Unknown serialization key '%s'", key); | |
1804 | ||
1805 | return 0; | |
1806 | } | |
1807 | ||
87f0e418 LP |
1808 | static UnitActiveState socket_active_state(Unit *u) { |
1809 | assert(u); | |
5cb5a6ff | 1810 | |
acbb0225 | 1811 | return state_translation_table[SOCKET(u)->state]; |
5cb5a6ff LP |
1812 | } |
1813 | ||
10a94420 LP |
1814 | static const char *socket_sub_state_to_string(Unit *u) { |
1815 | assert(u); | |
1816 | ||
a16e1123 | 1817 | return socket_state_to_string(SOCKET(u)->state); |
10a94420 LP |
1818 | } |
1819 | ||
6cf6bbc2 LP |
1820 | static bool socket_check_gc(Unit *u) { |
1821 | Socket *s = SOCKET(u); | |
1822 | ||
1823 | assert(u); | |
1824 | ||
1825 | return s->n_connections > 0; | |
1826 | } | |
1827 | ||
acbb0225 | 1828 | static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { |
87f0e418 | 1829 | Socket *s = SOCKET(u); |
4f2d528d | 1830 | int cfd = -1; |
9152c765 | 1831 | |
034c6ed7 | 1832 | assert(s); |
8d567588 | 1833 | assert(fd >= 0); |
9152c765 | 1834 | |
871d7de4 LP |
1835 | if (s->state != SOCKET_LISTENING) |
1836 | return; | |
1837 | ||
ac155bb8 | 1838 | log_debug("Incoming traffic on %s", u->id); |
9152c765 | 1839 | |
4f2d528d | 1840 | if (events != EPOLLIN) { |
641e01dc LP |
1841 | |
1842 | if (events & EPOLLHUP) | |
ac155bb8 | 1843 | log_error("%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", u->id); |
641e01dc | 1844 | else |
ac155bb8 | 1845 | log_error("%s: Got unexpected poll event (0x%x) on socket.", u->id, events); |
641e01dc | 1846 | |
8d567588 | 1847 | goto fail; |
4f2d528d LP |
1848 | } |
1849 | ||
cabab516 | 1850 | if (w->socket_accept) { |
4f2d528d LP |
1851 | for (;;) { |
1852 | ||
1853 | if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) { | |
1854 | ||
1855 | if (errno == EINTR) | |
1856 | continue; | |
1857 | ||
1858 | log_error("Failed to accept socket: %m"); | |
8d567588 | 1859 | goto fail; |
4f2d528d LP |
1860 | } |
1861 | ||
1862 | break; | |
1863 | } | |
4fd5948e LP |
1864 | |
1865 | socket_apply_socket_options(s, cfd); | |
4f2d528d | 1866 | } |
9152c765 | 1867 | |
4f2d528d | 1868 | socket_enter_running(s, cfd); |
8d567588 LP |
1869 | return; |
1870 | ||
1871 | fail: | |
cfc4eb4c | 1872 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
9152c765 LP |
1873 | } |
1874 | ||
87f0e418 LP |
1875 | static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1876 | Socket *s = SOCKET(u); | |
cfc4eb4c | 1877 | SocketResult f; |
5cb5a6ff LP |
1878 | |
1879 | assert(s); | |
034c6ed7 | 1880 | assert(pid >= 0); |
5cb5a6ff | 1881 | |
8c47c732 LP |
1882 | if (pid != s->control_pid) |
1883 | return; | |
542563ba | 1884 | |
034c6ed7 LP |
1885 | s->control_pid = 0; |
1886 | ||
cfc4eb4c LP |
1887 | if (is_clean_exit(code, status)) |
1888 | f = SOCKET_SUCCESS; | |
1889 | else if (code == CLD_EXITED) | |
1890 | f = SOCKET_FAILURE_EXIT_CODE; | |
1891 | else if (code == CLD_KILLED) | |
1892 | f = SOCKET_FAILURE_SIGNAL; | |
1893 | else if (code == CLD_DUMPED) | |
1894 | f = SOCKET_FAILURE_CORE_DUMP; | |
1895 | else | |
1896 | assert_not_reached("Unknown code"); | |
8c47c732 | 1897 | |
b708e7ce | 1898 | if (s->control_command) { |
6ea832a2 | 1899 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 1900 | |
b708e7ce | 1901 | if (s->control_command->ignore) |
cfc4eb4c | 1902 | f = SOCKET_SUCCESS; |
b708e7ce LP |
1903 | } |
1904 | ||
cfc4eb4c | 1905 | log_full(f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE, |
ac155bb8 | 1906 | "%s control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status); |
034c6ed7 | 1907 | |
cfc4eb4c LP |
1908 | if (f != SOCKET_SUCCESS) |
1909 | s->result = f; | |
1910 | ||
1911 | if (s->control_command && | |
1912 | s->control_command->command_next && | |
1913 | f == SOCKET_SUCCESS) { | |
1914 | ||
ac155bb8 | 1915 | log_debug("%s running next command for state %s", u->id, socket_state_to_string(s->state)); |
cfc4eb4c | 1916 | socket_run_next(s); |
acbb0225 | 1917 | } else { |
a16e1123 LP |
1918 | s->control_command = NULL; |
1919 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
1920 | ||
034c6ed7 LP |
1921 | /* No further commands for this step, so let's figure |
1922 | * out what to do next */ | |
5cb5a6ff | 1923 | |
ac155bb8 | 1924 | log_debug("%s got final SIGCHLD for state %s", u->id, socket_state_to_string(s->state)); |
acbb0225 | 1925 | |
034c6ed7 LP |
1926 | switch (s->state) { |
1927 | ||
1928 | case SOCKET_START_PRE: | |
cfc4eb4c | 1929 | if (f == SOCKET_SUCCESS) |
acbb0225 | 1930 | socket_enter_start_post(s); |
034c6ed7 | 1931 | else |
cfc4eb4c | 1932 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, f); |
034c6ed7 LP |
1933 | break; |
1934 | ||
1935 | case SOCKET_START_POST: | |
cfc4eb4c | 1936 | if (f == SOCKET_SUCCESS) |
e9af15c3 | 1937 | socket_enter_listening(s); |
034c6ed7 | 1938 | else |
cfc4eb4c | 1939 | socket_enter_stop_pre(s, f); |
034c6ed7 LP |
1940 | break; |
1941 | ||
1942 | case SOCKET_STOP_PRE: | |
1943 | case SOCKET_STOP_PRE_SIGTERM: | |
1944 | case SOCKET_STOP_PRE_SIGKILL: | |
cfc4eb4c | 1945 | socket_enter_stop_post(s, f); |
034c6ed7 LP |
1946 | break; |
1947 | ||
1948 | case SOCKET_STOP_POST: | |
80876c20 LP |
1949 | case SOCKET_FINAL_SIGTERM: |
1950 | case SOCKET_FINAL_SIGKILL: | |
cfc4eb4c | 1951 | socket_enter_dead(s, f); |
034c6ed7 LP |
1952 | break; |
1953 | ||
1954 | default: | |
1955 | assert_not_reached("Uh, control process died at wrong time."); | |
1956 | } | |
1957 | } | |
c4e2ceae LP |
1958 | |
1959 | /* Notify clients about changed exit status */ | |
1960 | unit_add_to_dbus_queue(u); | |
034c6ed7 | 1961 | } |
5cb5a6ff | 1962 | |
acbb0225 | 1963 | static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) { |
87f0e418 | 1964 | Socket *s = SOCKET(u); |
5cb5a6ff | 1965 | |
034c6ed7 LP |
1966 | assert(s); |
1967 | assert(elapsed == 1); | |
acbb0225 | 1968 | assert(w == &s->timer_watch); |
034c6ed7 LP |
1969 | |
1970 | switch (s->state) { | |
1971 | ||
1972 | case SOCKET_START_PRE: | |
ac155bb8 | 1973 | log_warning("%s starting timed out. Terminating.", u->id); |
cfc4eb4c | 1974 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
da19d5c1 | 1975 | break; |
80876c20 | 1976 | |
034c6ed7 | 1977 | case SOCKET_START_POST: |
ac155bb8 | 1978 | log_warning("%s starting timed out. Stopping.", u->id); |
cfc4eb4c | 1979 | socket_enter_stop_pre(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
1980 | break; |
1981 | ||
1982 | case SOCKET_STOP_PRE: | |
ac155bb8 | 1983 | log_warning("%s stopping timed out. Terminating.", u->id); |
cfc4eb4c | 1984 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
1985 | break; |
1986 | ||
1987 | case SOCKET_STOP_PRE_SIGTERM: | |
4819ff03 | 1988 | if (s->kill_context.send_sigkill) { |
ac155bb8 | 1989 | log_warning("%s stopping timed out. Killing.", u->id); |
cfc4eb4c | 1990 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 1991 | } else { |
ac155bb8 | 1992 | log_warning("%s stopping timed out. Skipping SIGKILL. Ignoring.", u->id); |
cfc4eb4c | 1993 | socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 1994 | } |
034c6ed7 LP |
1995 | break; |
1996 | ||
1997 | case SOCKET_STOP_PRE_SIGKILL: | |
ac155bb8 | 1998 | log_warning("%s still around after SIGKILL. Ignoring.", u->id); |
cfc4eb4c | 1999 | socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2000 | break; |
2001 | ||
2002 | case SOCKET_STOP_POST: | |
ac155bb8 | 2003 | log_warning("%s stopping timed out (2). Terminating.", u->id); |
cfc4eb4c | 2004 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2005 | break; |
2006 | ||
80876c20 | 2007 | case SOCKET_FINAL_SIGTERM: |
4819ff03 | 2008 | if (s->kill_context.send_sigkill) { |
ac155bb8 | 2009 | log_warning("%s stopping timed out (2). Killing.", u->id); |
cfc4eb4c | 2010 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2011 | } else { |
ac155bb8 | 2012 | log_warning("%s stopping timed out (2). Skipping SIGKILL. Ignoring.", u->id); |
cfc4eb4c | 2013 | socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2014 | } |
034c6ed7 LP |
2015 | break; |
2016 | ||
80876c20 | 2017 | case SOCKET_FINAL_SIGKILL: |
ac155bb8 | 2018 | log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id); |
cfc4eb4c | 2019 | socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2020 | break; |
2021 | ||
2022 | default: | |
2023 | assert_not_reached("Timeout at wrong time."); | |
2024 | } | |
5cb5a6ff LP |
2025 | } |
2026 | ||
44d8db9e LP |
2027 | int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { |
2028 | int *rfds; | |
2029 | unsigned rn_fds, k; | |
2030 | SocketPort *p; | |
2031 | ||
2032 | assert(s); | |
2033 | assert(fds); | |
2034 | assert(n_fds); | |
2035 | ||
2036 | /* Called from the service code for requesting our fds */ | |
2037 | ||
2038 | rn_fds = 0; | |
2039 | LIST_FOREACH(port, p, s->ports) | |
2040 | if (p->fd >= 0) | |
2041 | rn_fds++; | |
2042 | ||
de3756ab LP |
2043 | if (rn_fds <= 0) { |
2044 | *fds = NULL; | |
2045 | *n_fds = 0; | |
2046 | return 0; | |
2047 | } | |
2048 | ||
e364ad06 | 2049 | if (!(rfds = new(int, rn_fds))) |
44d8db9e LP |
2050 | return -ENOMEM; |
2051 | ||
2052 | k = 0; | |
2053 | LIST_FOREACH(port, p, s->ports) | |
2054 | if (p->fd >= 0) | |
2055 | rfds[k++] = p->fd; | |
2056 | ||
2057 | assert(k == rn_fds); | |
2058 | ||
2059 | *fds = rfds; | |
2060 | *n_fds = rn_fds; | |
2061 | ||
2062 | return 0; | |
2063 | } | |
2064 | ||
6bda96a0 | 2065 | void socket_notify_service_dead(Socket *s, bool failed_permanent) { |
ceee3d82 LP |
2066 | assert(s); |
2067 | ||
6cf6bbc2 LP |
2068 | /* The service is dead. Dang! |
2069 | * | |
2070 | * This is strictly for one-instance-for-all-connections | |
2071 | * services. */ | |
ceee3d82 LP |
2072 | |
2073 | if (s->state == SOCKET_RUNNING) { | |
6bda96a0 LP |
2074 | log_debug("%s got notified about service death (failed permanently: %s)", UNIT(s)->id, yes_no(failed_permanent)); |
2075 | if (failed_permanent) | |
2076 | socket_enter_stop_pre(s, SOCKET_FAILURE_SERVICE_FAILED_PERMANENT); | |
c2f34808 MS |
2077 | else |
2078 | socket_enter_listening(s); | |
ceee3d82 LP |
2079 | } |
2080 | } | |
2081 | ||
6cf6bbc2 LP |
2082 | void socket_connection_unref(Socket *s) { |
2083 | assert(s); | |
2084 | ||
2085 | /* The service is dead. Yay! | |
2086 | * | |
35b8ca3a | 2087 | * This is strictly for one-instance-per-connection |
6cf6bbc2 LP |
2088 | * services. */ |
2089 | ||
2090 | assert(s->n_connections > 0); | |
2091 | s->n_connections--; | |
2092 | ||
1124fe6f | 2093 | log_debug("%s: One connection closed, %u left.", UNIT(s)->id, s->n_connections); |
6cf6bbc2 LP |
2094 | } |
2095 | ||
fdf20a31 | 2096 | static void socket_reset_failed(Unit *u) { |
5632e374 LP |
2097 | Socket *s = SOCKET(u); |
2098 | ||
2099 | assert(s); | |
2100 | ||
fdf20a31 | 2101 | if (s->state == SOCKET_FAILED) |
5632e374 LP |
2102 | socket_set_state(s, SOCKET_DEAD); |
2103 | ||
cfc4eb4c | 2104 | s->result = SOCKET_SUCCESS; |
5632e374 LP |
2105 | } |
2106 | ||
8a0867d6 LP |
2107 | static int socket_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { |
2108 | Socket *s = SOCKET(u); | |
2109 | int r = 0; | |
2110 | Set *pid_set = NULL; | |
2111 | ||
2112 | assert(s); | |
2113 | ||
2114 | if (who == KILL_MAIN) { | |
2115 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Socket units have no main processes"); | |
a17204af | 2116 | return -ESRCH; |
8a0867d6 LP |
2117 | } |
2118 | ||
2119 | if (s->control_pid <= 0 && who == KILL_CONTROL) { | |
2120 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
a17204af | 2121 | return -ESRCH; |
8a0867d6 LP |
2122 | } |
2123 | ||
3611581e LP |
2124 | if (who == KILL_CONTROL || who == KILL_ALL) |
2125 | if (s->control_pid > 0) | |
2126 | if (kill(s->control_pid, signo) < 0) | |
2127 | r = -errno; | |
8a0867d6 | 2128 | |
3611581e | 2129 | if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) { |
8a0867d6 LP |
2130 | int q; |
2131 | ||
2132 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) | |
2133 | return -ENOMEM; | |
2134 | ||
2135 | /* Exclude the control pid from being killed via the cgroup */ | |
2136 | if (s->control_pid > 0) | |
2137 | if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) { | |
2138 | r = q; | |
2139 | goto finish; | |
2140 | } | |
2141 | ||
88f3e0c9 | 2142 | q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL); |
ecedd90f | 2143 | if (q < 0) |
3611581e | 2144 | if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) |
8a0867d6 LP |
2145 | r = q; |
2146 | } | |
2147 | ||
2148 | finish: | |
2149 | if (pid_set) | |
2150 | set_free(pid_set); | |
2151 | ||
2152 | return r; | |
2153 | } | |
2154 | ||
a16e1123 LP |
2155 | static const char* const socket_state_table[_SOCKET_STATE_MAX] = { |
2156 | [SOCKET_DEAD] = "dead", | |
2157 | [SOCKET_START_PRE] = "start-pre", | |
2158 | [SOCKET_START_POST] = "start-post", | |
2159 | [SOCKET_LISTENING] = "listening", | |
2160 | [SOCKET_RUNNING] = "running", | |
2161 | [SOCKET_STOP_PRE] = "stop-pre", | |
2162 | [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm", | |
2163 | [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill", | |
2164 | [SOCKET_STOP_POST] = "stop-post", | |
2165 | [SOCKET_FINAL_SIGTERM] = "final-sigterm", | |
2166 | [SOCKET_FINAL_SIGKILL] = "final-sigkill", | |
fdf20a31 | 2167 | [SOCKET_FAILED] = "failed" |
a16e1123 LP |
2168 | }; |
2169 | ||
2170 | DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState); | |
2171 | ||
2172 | static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = { | |
2173 | [SOCKET_EXEC_START_PRE] = "StartPre", | |
2174 | [SOCKET_EXEC_START_POST] = "StartPost", | |
2175 | [SOCKET_EXEC_STOP_PRE] = "StopPre", | |
2176 | [SOCKET_EXEC_STOP_POST] = "StopPost" | |
2177 | }; | |
2178 | ||
2179 | DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand); | |
2180 | ||
cfc4eb4c LP |
2181 | static const char* const socket_result_table[_SOCKET_RESULT_MAX] = { |
2182 | [SOCKET_SUCCESS] = "success", | |
2183 | [SOCKET_FAILURE_RESOURCES] = "resources", | |
2184 | [SOCKET_FAILURE_TIMEOUT] = "timeout", | |
2185 | [SOCKET_FAILURE_EXIT_CODE] = "exit-code", | |
2186 | [SOCKET_FAILURE_SIGNAL] = "signal", | |
c2f34808 | 2187 | [SOCKET_FAILURE_CORE_DUMP] = "core-dump", |
6bda96a0 | 2188 | [SOCKET_FAILURE_SERVICE_FAILED_PERMANENT] = "service-failed-permanent" |
cfc4eb4c LP |
2189 | }; |
2190 | ||
2191 | DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult); | |
2192 | ||
87f0e418 | 2193 | const UnitVTable socket_vtable = { |
7d17cfbc | 2194 | .object_size = sizeof(Socket), |
f975e971 LP |
2195 | .sections = |
2196 | "Unit\0" | |
2197 | "Socket\0" | |
2198 | "Install\0", | |
5cb5a6ff | 2199 | |
034c6ed7 LP |
2200 | .init = socket_init, |
2201 | .done = socket_done, | |
a16e1123 LP |
2202 | .load = socket_load, |
2203 | ||
8a0867d6 LP |
2204 | .kill = socket_kill, |
2205 | ||
a16e1123 | 2206 | .coldplug = socket_coldplug, |
034c6ed7 | 2207 | |
5cb5a6ff LP |
2208 | .dump = socket_dump, |
2209 | ||
542563ba LP |
2210 | .start = socket_start, |
2211 | .stop = socket_stop, | |
5cb5a6ff | 2212 | |
a16e1123 LP |
2213 | .serialize = socket_serialize, |
2214 | .deserialize_item = socket_deserialize_item, | |
2215 | ||
5cb5a6ff | 2216 | .active_state = socket_active_state, |
10a94420 | 2217 | .sub_state_to_string = socket_sub_state_to_string, |
5cb5a6ff | 2218 | |
6cf6bbc2 LP |
2219 | .check_gc = socket_check_gc, |
2220 | ||
9152c765 | 2221 | .fd_event = socket_fd_event, |
034c6ed7 | 2222 | .sigchld_event = socket_sigchld_event, |
4139c1b2 LP |
2223 | .timer_event = socket_timer_event, |
2224 | ||
fdf20a31 | 2225 | .reset_failed = socket_reset_failed, |
5632e374 | 2226 | |
c4e2ceae LP |
2227 | .bus_interface = "org.freedesktop.systemd1.Socket", |
2228 | .bus_message_handler = bus_socket_message_handler, | |
c6918296 MS |
2229 | .bus_invalidating_properties = bus_socket_invalidating_properties, |
2230 | ||
2231 | .status_message_formats = { | |
2232 | /*.starting_stopping = { | |
2233 | [0] = "Starting socket %s...", | |
2234 | [1] = "Stopping socket %s...", | |
2235 | },*/ | |
2236 | .finished_start_job = { | |
2237 | [JOB_DONE] = "Listening on %s.", | |
2238 | [JOB_FAILED] = "Failed to listen on %s.", | |
2239 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
2240 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
2241 | }, | |
2242 | .finished_stop_job = { | |
2243 | [JOB_DONE] = "Closed %s.", | |
2244 | [JOB_FAILED] = "Failed stopping %s.", | |
2245 | [JOB_TIMEOUT] = "Timed out stopping %s.", | |
2246 | }, | |
2247 | }, | |
5cb5a6ff | 2248 | }; |