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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> |
718db961 | 30 | #include <netinet/tcp.h> |
916abb21 | 31 | #include <mqueue.h> |
d2edfae0 | 32 | #include <sys/xattr.h> |
83c60c9f | 33 | |
718db961 | 34 | #include "sd-event.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" |
41f9172f | 42 | #include "unit-printf.h" |
4fd5948e | 43 | #include "missing.h" |
a40eb732 | 44 | #include "special.h" |
e51bc1a2 | 45 | #include "label.h" |
9a57c629 | 46 | #include "exit-status.h" |
f6a6225e | 47 | #include "def.h" |
5a045dad | 48 | #include "smack-util.h" |
718db961 LP |
49 | #include "bus-util.h" |
50 | #include "bus-error.h" | |
e821075a LP |
51 | #include "dbus-socket.h" |
52 | #include "unit.h" | |
53 | #include "socket.h" | |
83c60c9f | 54 | |
acbb0225 | 55 | static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { |
87f0e418 LP |
56 | [SOCKET_DEAD] = UNIT_INACTIVE, |
57 | [SOCKET_START_PRE] = UNIT_ACTIVATING, | |
3900e5fd | 58 | [SOCKET_START_CHOWN] = UNIT_ACTIVATING, |
87f0e418 LP |
59 | [SOCKET_START_POST] = UNIT_ACTIVATING, |
60 | [SOCKET_LISTENING] = UNIT_ACTIVE, | |
61 | [SOCKET_RUNNING] = UNIT_ACTIVE, | |
62 | [SOCKET_STOP_PRE] = UNIT_DEACTIVATING, | |
63 | [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING, | |
64 | [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING, | |
65 | [SOCKET_STOP_POST] = UNIT_DEACTIVATING, | |
80876c20 LP |
66 | [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
67 | [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 68 | [SOCKET_FAILED] = UNIT_FAILED |
83c60c9f | 69 | }; |
5cb5a6ff | 70 | |
718db961 LP |
71 | static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
72 | static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
73 | ||
a16e1123 LP |
74 | static void socket_init(Unit *u) { |
75 | Socket *s = SOCKET(u); | |
76 | ||
77 | assert(u); | |
ac155bb8 | 78 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 79 | |
a16e1123 | 80 | s->backlog = SOMAXCONN; |
1f19a534 | 81 | s->timeout_usec = u->manager->default_timeout_start_usec; |
a16e1123 | 82 | s->directory_mode = 0755; |
9131f660 | 83 | s->socket_mode = 0666; |
a16e1123 | 84 | |
6cf6bbc2 LP |
85 | s->max_connections = 64; |
86 | ||
4fd5948e | 87 | s->priority = -1; |
4fd5948e LP |
88 | s->ip_tos = -1; |
89 | s->ip_ttl = -1; | |
4fd5948e | 90 | s->mark = -1; |
4fd5948e | 91 | |
ac155bb8 MS |
92 | s->exec_context.std_output = u->manager->default_std_output; |
93 | s->exec_context.std_error = u->manager->default_std_error; | |
085afe36 | 94 | |
a16e1123 LP |
95 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
96 | } | |
acbb0225 | 97 | |
5e94833f LP |
98 | static void socket_unwatch_control_pid(Socket *s) { |
99 | assert(s); | |
100 | ||
101 | if (s->control_pid <= 0) | |
102 | return; | |
103 | ||
104 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
105 | s->control_pid = 0; | |
106 | } | |
107 | ||
74051b9b | 108 | void socket_free_ports(Socket *s) { |
034c6ed7 LP |
109 | SocketPort *p; |
110 | ||
111 | assert(s); | |
112 | ||
113 | while ((p = s->ports)) { | |
71fda00f | 114 | LIST_REMOVE(port, s->ports, p); |
034c6ed7 | 115 | |
718db961 LP |
116 | sd_event_source_unref(p->event_source); |
117 | ||
03e334a1 | 118 | safe_close(p->fd); |
034c6ed7 LP |
119 | free(p->path); |
120 | free(p); | |
121 | } | |
74051b9b LP |
122 | } |
123 | ||
124 | static void socket_done(Unit *u) { | |
125 | Socket *s = SOCKET(u); | |
126 | ||
127 | assert(s); | |
128 | ||
129 | socket_free_ports(s); | |
034c6ed7 | 130 | |
613b411c | 131 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e537352b | 132 | exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX); |
034c6ed7 LP |
133 | s->control_command = NULL; |
134 | ||
5e94833f | 135 | socket_unwatch_control_pid(s); |
034c6ed7 | 136 | |
57020a3a | 137 | unit_ref_unset(&s->service); |
034c6ed7 | 138 | |
cebf8b20 TT |
139 | free(s->tcp_congestion); |
140 | s->tcp_congestion = NULL; | |
141 | ||
acbb0225 | 142 | free(s->bind_to_device); |
e537352b | 143 | s->bind_to_device = NULL; |
acbb0225 | 144 | |
0eb59ccf AK |
145 | free(s->smack); |
146 | free(s->smack_ip_in); | |
147 | free(s->smack_ip_out); | |
148 | ||
811ba7a0 LP |
149 | strv_free(s->symlinks); |
150 | ||
3900e5fd LP |
151 | free(s->user); |
152 | free(s->group); | |
153 | ||
718db961 LP |
154 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
155 | } | |
156 | ||
157 | static int socket_arm_timer(Socket *s) { | |
158 | int r; | |
159 | ||
160 | assert(s); | |
161 | ||
162 | if (s->timeout_usec <= 0) { | |
163 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | if (s->timer_event_source) { | |
168 | r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + s->timeout_usec); | |
169 | if (r < 0) | |
170 | return r; | |
171 | ||
172 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
173 | } | |
174 | ||
6a0f1f6d LP |
175 | return sd_event_add_time( |
176 | UNIT(s)->manager->event, | |
177 | &s->timer_event_source, | |
178 | CLOCK_MONOTONIC, | |
179 | now(CLOCK_MONOTONIC) + s->timeout_usec, 0, | |
180 | socket_dispatch_timer, s); | |
5cb5a6ff LP |
181 | } |
182 | ||
8b835fcc ZJS |
183 | int socket_instantiate_service(Socket *s) { |
184 | _cleanup_free_ char *prefix = NULL, *name = NULL; | |
b15bdda8 LP |
185 | int r; |
186 | Unit *u; | |
187 | ||
188 | assert(s); | |
189 | ||
190 | /* This fills in s->service if it isn't filled in yet. For | |
191 | * Accept=yes sockets we create the next connection service | |
192 | * here. For Accept=no this is mostly a NOP since the service | |
193 | * is figured out at load time anyway. */ | |
194 | ||
8b835fcc | 195 | if (UNIT_DEREF(s->service) || !s->accept) |
b15bdda8 LP |
196 | return 0; |
197 | ||
315db1a8 ZJS |
198 | prefix = unit_name_to_prefix(UNIT(s)->id); |
199 | if (!prefix) | |
b15bdda8 LP |
200 | return -ENOMEM; |
201 | ||
315db1a8 | 202 | if (asprintf(&name, "%s@%u.service", prefix, s->n_accepted) < 0) |
b15bdda8 LP |
203 | return -ENOMEM; |
204 | ||
1124fe6f | 205 | r = manager_load_unit(UNIT(s)->manager, name, NULL, NULL, &u); |
b15bdda8 LP |
206 | if (r < 0) |
207 | return r; | |
208 | ||
ac155bb8 | 209 | u->no_gc = true; |
57020a3a LP |
210 | unit_ref_set(&s->service, u); |
211 | ||
212 | return unit_add_two_dependencies(UNIT(s), UNIT_BEFORE, UNIT_TRIGGERS, u, false); | |
b15bdda8 LP |
213 | } |
214 | ||
4f2d528d LP |
215 | static bool have_non_accept_socket(Socket *s) { |
216 | SocketPort *p; | |
217 | ||
218 | assert(s); | |
219 | ||
220 | if (!s->accept) | |
221 | return true; | |
222 | ||
dd5ad9d4 LP |
223 | LIST_FOREACH(port, p, s->ports) { |
224 | ||
225 | if (p->type != SOCKET_SOCKET) | |
226 | return true; | |
227 | ||
4f2d528d LP |
228 | if (!socket_address_can_accept(&p->address)) |
229 | return true; | |
dd5ad9d4 | 230 | } |
4f2d528d LP |
231 | |
232 | return false; | |
233 | } | |
234 | ||
a57f7e2c | 235 | static int socket_add_mount_links(Socket *s) { |
6e2ef85b | 236 | SocketPort *p; |
6e2ef85b LP |
237 | int r; |
238 | ||
239 | assert(s); | |
6e2ef85b | 240 | |
a57f7e2c LP |
241 | LIST_FOREACH(port, p, s->ports) { |
242 | const char *path = NULL; | |
6e2ef85b | 243 | |
a57f7e2c LP |
244 | if (p->type == SOCKET_SOCKET) |
245 | path = socket_address_get_path(&p->address); | |
246 | else if (p->type == SOCKET_FIFO || p->type == SOCKET_SPECIAL) | |
247 | path = p->path; | |
6e2ef85b | 248 | |
a57f7e2c LP |
249 | if (!path) |
250 | continue; | |
6e2ef85b | 251 | |
a57f7e2c | 252 | r = unit_require_mounts_for(UNIT(s), path); |
b87705cd | 253 | if (r < 0) |
6e2ef85b | 254 | return r; |
b87705cd | 255 | } |
6e2ef85b LP |
256 | |
257 | return 0; | |
258 | } | |
259 | ||
260 | static int socket_add_device_link(Socket *s) { | |
261 | char *t; | |
6e2ef85b LP |
262 | |
263 | assert(s); | |
264 | ||
7d0c710d | 265 | if (!s->bind_to_device || streq(s->bind_to_device, "lo")) |
6e2ef85b LP |
266 | return 0; |
267 | ||
e821075a LP |
268 | t = strappenda("/sys/subsystem/net/devices/", s->bind_to_device); |
269 | return unit_add_node_link(UNIT(s), t, false); | |
6e2ef85b LP |
270 | } |
271 | ||
a40eb732 LP |
272 | static int socket_add_default_dependencies(Socket *s) { |
273 | int r; | |
274 | assert(s); | |
275 | ||
e3d84721 LP |
276 | r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true); |
277 | if (r < 0) | |
278 | return r; | |
2a77d31d | 279 | |
e3d84721 LP |
280 | if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) { |
281 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); | |
282 | if (r < 0) | |
a40eb732 | 283 | return r; |
2a77d31d | 284 | } |
a40eb732 | 285 | |
ead8e478 | 286 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
a40eb732 LP |
287 | } |
288 | ||
44a6b1b6 | 289 | _pure_ static bool socket_has_exec(Socket *s) { |
4cfc6dbe LP |
290 | unsigned i; |
291 | assert(s); | |
292 | ||
293 | for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++) | |
294 | if (s->exec_command[i]) | |
295 | return true; | |
296 | ||
297 | return false; | |
298 | } | |
299 | ||
e821075a LP |
300 | static int socket_add_extras(Socket *s) { |
301 | Unit *u = UNIT(s); | |
e537352b | 302 | int r; |
44d8db9e | 303 | |
e821075a | 304 | assert(s); |
57020a3a | 305 | |
e821075a | 306 | if (have_non_accept_socket(s)) { |
23a177ef | 307 | |
e821075a LP |
308 | if (!UNIT_DEREF(s->service)) { |
309 | Unit *x; | |
57020a3a | 310 | |
e821075a | 311 | r = unit_load_related_unit(u, ".service", &x); |
57020a3a | 312 | if (r < 0) |
4f2d528d | 313 | return r; |
e821075a LP |
314 | |
315 | unit_ref_set(&s->service, x); | |
4f2d528d | 316 | } |
44d8db9e | 317 | |
e821075a LP |
318 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(s->service), true); |
319 | if (r < 0) | |
6e2ef85b | 320 | return r; |
e821075a | 321 | } |
6e2ef85b | 322 | |
e821075a LP |
323 | r = socket_add_mount_links(s); |
324 | if (r < 0) | |
325 | return r; | |
6e2ef85b | 326 | |
e821075a LP |
327 | r = socket_add_device_link(s); |
328 | if (r < 0) | |
329 | return r; | |
330 | ||
598459ce | 331 | r = unit_patch_contexts(u); |
e821075a LP |
332 | if (r < 0) |
333 | return r; | |
334 | ||
335 | if (socket_has_exec(s)) { | |
336 | r = unit_add_exec_dependencies(u, &s->exec_context); | |
337 | if (r < 0) | |
338 | return r; | |
23a177ef | 339 | |
598459ce | 340 | r = unit_add_default_slice(u, &s->cgroup_context); |
a016b922 LP |
341 | if (r < 0) |
342 | return r; | |
e821075a | 343 | } |
a016b922 | 344 | |
e821075a LP |
345 | if (u->default_dependencies) { |
346 | r = socket_add_default_dependencies(s); | |
347 | if (r < 0) | |
348 | return r; | |
349 | } | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
811ba7a0 LP |
354 | static const char *socket_find_symlink_target(Socket *s) { |
355 | const char *found = NULL; | |
356 | SocketPort *p; | |
357 | ||
358 | LIST_FOREACH(port, p, s->ports) { | |
359 | const char *f = NULL; | |
360 | ||
361 | switch (p->type) { | |
362 | ||
363 | case SOCKET_FIFO: | |
364 | f = p->path; | |
365 | break; | |
366 | ||
367 | case SOCKET_SOCKET: | |
368 | if (p->address.sockaddr.un.sun_path[0] != 0) | |
369 | f = p->address.sockaddr.un.sun_path; | |
370 | break; | |
371 | ||
372 | default: | |
373 | break; | |
374 | } | |
375 | ||
376 | if (f) { | |
377 | if (found) | |
378 | return NULL; | |
379 | ||
380 | found = f; | |
381 | } | |
382 | } | |
383 | ||
384 | return found; | |
385 | } | |
386 | ||
e821075a LP |
387 | static int socket_verify(Socket *s) { |
388 | assert(s); | |
389 | ||
390 | if (UNIT(s)->load_state != UNIT_LOADED) | |
391 | return 0; | |
392 | ||
393 | if (!s->ports) { | |
394 | log_error_unit(UNIT(s)->id, "%s lacks Listen setting. Refusing.", UNIT(s)->id); | |
395 | return -EINVAL; | |
396 | } | |
397 | ||
398 | if (s->accept && have_non_accept_socket(s)) { | |
399 | log_error_unit(UNIT(s)->id, "%s configured for accepting sockets, but sockets are non-accepting. Refusing.", | |
400 | UNIT(s)->id); | |
401 | return -EINVAL; | |
402 | } | |
403 | ||
404 | if (s->accept && s->max_connections <= 0) { | |
405 | log_error_unit(UNIT(s)->id, "%s's MaxConnection setting too small. Refusing.", UNIT(s)->id); | |
406 | return -EINVAL; | |
407 | } | |
e06c73cc | 408 | |
e821075a LP |
409 | if (s->accept && UNIT_DEREF(s->service)) { |
410 | log_error_unit(UNIT(s)->id, "Explicit service configuration for accepting sockets not supported on %s. Refusing.", UNIT(s)->id); | |
411 | return -EINVAL; | |
412 | } | |
413 | ||
414 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { | |
415 | log_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); | |
416 | return -EINVAL; | |
417 | } | |
418 | ||
811ba7a0 LP |
419 | if (!strv_isempty(s->symlinks) && !socket_find_symlink_target(s)) { |
420 | log_error_unit(UNIT(s)->id, "%s has symlinks set but none or more than one node in the file system. Refusing.", UNIT(s)->id); | |
421 | return -EINVAL; | |
422 | } | |
423 | ||
e821075a LP |
424 | return 0; |
425 | } | |
426 | ||
427 | static int socket_load(Unit *u) { | |
428 | Socket *s = SOCKET(u); | |
429 | int r; | |
430 | ||
431 | assert(u); | |
432 | assert(u->load_state == UNIT_STUB); | |
433 | ||
434 | r = unit_load_fragment_and_dropin(u); | |
435 | if (r < 0) | |
436 | return r; | |
437 | ||
438 | if (u->load_state == UNIT_LOADED) { | |
439 | /* This is a new unit? Then let's add in some extras */ | |
440 | r = socket_add_extras(s); | |
e06c73cc LP |
441 | if (r < 0) |
442 | return r; | |
23a177ef LP |
443 | } |
444 | ||
4f2d528d | 445 | return socket_verify(s); |
44d8db9e LP |
446 | } |
447 | ||
44a6b1b6 | 448 | _const_ static const char* listen_lookup(int family, int type) { |
7a22745a LP |
449 | |
450 | if (family == AF_NETLINK) | |
451 | return "ListenNetlink"; | |
542563ba LP |
452 | |
453 | if (type == SOCK_STREAM) | |
454 | return "ListenStream"; | |
455 | else if (type == SOCK_DGRAM) | |
456 | return "ListenDatagram"; | |
457 | else if (type == SOCK_SEQPACKET) | |
458 | return "ListenSequentialPacket"; | |
459 | ||
034c6ed7 | 460 | assert_not_reached("Unknown socket type"); |
542563ba LP |
461 | return NULL; |
462 | } | |
463 | ||
87f0e418 | 464 | static void socket_dump(Unit *u, FILE *f, const char *prefix) { |
209e9dcd | 465 | char time_string[FORMAT_TIMESPAN_MAX]; |
5cb5a6ff | 466 | SocketExecCommand c; |
87f0e418 | 467 | Socket *s = SOCKET(u); |
542563ba | 468 | SocketPort *p; |
82ba9f08 | 469 | const char *prefix2; |
5cb5a6ff LP |
470 | |
471 | assert(s); | |
fa068367 | 472 | assert(f); |
5cb5a6ff | 473 | |
4c940960 | 474 | prefix = strempty(prefix); |
e821075a | 475 | prefix2 = strappenda(prefix, "\t"); |
c43d20a0 | 476 | |
5cb5a6ff LP |
477 | fprintf(f, |
478 | "%sSocket State: %s\n" | |
81a5c6d0 | 479 | "%sResult: %s\n" |
542563ba | 480 | "%sBindIPv6Only: %s\n" |
b5a0699f LP |
481 | "%sBacklog: %u\n" |
482 | "%sSocketMode: %04o\n" | |
4fd5948e LP |
483 | "%sDirectoryMode: %04o\n" |
484 | "%sKeepAlive: %s\n" | |
4427c3f4 | 485 | "%sNoDelay: %s\n" |
cebf8b20 | 486 | "%sFreeBind: %s\n" |
6b6d2dee | 487 | "%sTransparent: %s\n" |
ec6370a2 | 488 | "%sBroadcast: %s\n" |
ede3deb4 | 489 | "%sPassCredentials: %s\n" |
54ecda32 | 490 | "%sPassSecurity: %s\n" |
bd1fe7c7 | 491 | "%sTCPCongestion: %s\n" |
16115b0a MS |
492 | "%sRemoveOnStop: %s\n" |
493 | "%sSELinuxContextFromNet: %s\n", | |
a16e1123 | 494 | prefix, socket_state_to_string(s->state), |
81a5c6d0 | 495 | prefix, socket_result_to_string(s->result), |
c0120d99 | 496 | prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only), |
b5a0699f LP |
497 | prefix, s->backlog, |
498 | prefix, s->socket_mode, | |
4fd5948e LP |
499 | prefix, s->directory_mode, |
500 | prefix, yes_no(s->keep_alive), | |
4427c3f4 | 501 | prefix, yes_no(s->no_delay), |
cebf8b20 | 502 | prefix, yes_no(s->free_bind), |
6b6d2dee | 503 | prefix, yes_no(s->transparent), |
ec6370a2 | 504 | prefix, yes_no(s->broadcast), |
d68af586 | 505 | prefix, yes_no(s->pass_cred), |
54ecda32 | 506 | prefix, yes_no(s->pass_sec), |
bd1fe7c7 | 507 | prefix, strna(s->tcp_congestion), |
16115b0a MS |
508 | prefix, yes_no(s->remove_on_stop), |
509 | prefix, yes_no(s->selinux_context_from_net)); | |
542563ba | 510 | |
70123e68 LP |
511 | if (s->control_pid > 0) |
512 | fprintf(f, | |
de0671ee ZJS |
513 | "%sControl PID: "PID_FMT"\n", |
514 | prefix, s->control_pid); | |
70123e68 | 515 | |
acbb0225 LP |
516 | if (s->bind_to_device) |
517 | fprintf(f, | |
518 | "%sBindToDevice: %s\n", | |
519 | prefix, s->bind_to_device); | |
520 | ||
4f2d528d LP |
521 | if (s->accept) |
522 | fprintf(f, | |
6cf6bbc2 LP |
523 | "%sAccepted: %u\n" |
524 | "%sNConnections: %u\n" | |
525 | "%sMaxConnections: %u\n", | |
526 | prefix, s->n_accepted, | |
527 | prefix, s->n_connections, | |
528 | prefix, s->max_connections); | |
4f2d528d | 529 | |
4fd5948e LP |
530 | if (s->priority >= 0) |
531 | fprintf(f, | |
532 | "%sPriority: %i\n", | |
533 | prefix, s->priority); | |
534 | ||
535 | if (s->receive_buffer > 0) | |
536 | fprintf(f, | |
537 | "%sReceiveBuffer: %zu\n", | |
538 | prefix, s->receive_buffer); | |
539 | ||
540 | if (s->send_buffer > 0) | |
541 | fprintf(f, | |
542 | "%sSendBuffer: %zu\n", | |
543 | prefix, s->send_buffer); | |
544 | ||
545 | if (s->ip_tos >= 0) | |
546 | fprintf(f, | |
547 | "%sIPTOS: %i\n", | |
548 | prefix, s->ip_tos); | |
549 | ||
550 | if (s->ip_ttl >= 0) | |
551 | fprintf(f, | |
552 | "%sIPTTL: %i\n", | |
553 | prefix, s->ip_ttl); | |
554 | ||
555 | if (s->pipe_size > 0) | |
556 | fprintf(f, | |
557 | "%sPipeSize: %zu\n", | |
558 | prefix, s->pipe_size); | |
559 | ||
560 | if (s->mark >= 0) | |
561 | fprintf(f, | |
562 | "%sMark: %i\n", | |
563 | prefix, s->mark); | |
564 | ||
916abb21 LP |
565 | if (s->mq_maxmsg > 0) |
566 | fprintf(f, | |
567 | "%sMessageQueueMaxMessages: %li\n", | |
568 | prefix, s->mq_maxmsg); | |
569 | ||
570 | if (s->mq_msgsize > 0) | |
571 | fprintf(f, | |
572 | "%sMessageQueueMessageSize: %li\n", | |
573 | prefix, s->mq_msgsize); | |
574 | ||
718db961 | 575 | if (s->reuse_port) |
f7db7a69 SL |
576 | fprintf(f, |
577 | "%sReusePort: %s\n", | |
718db961 | 578 | prefix, yes_no(s->reuse_port)); |
f7db7a69 | 579 | |
0eb59ccf AK |
580 | if (s->smack) |
581 | fprintf(f, | |
582 | "%sSmackLabel: %s\n", | |
583 | prefix, s->smack); | |
584 | ||
585 | if (s->smack_ip_in) | |
586 | fprintf(f, | |
587 | "%sSmackLabelIPIn: %s\n", | |
588 | prefix, s->smack_ip_in); | |
589 | ||
590 | if (s->smack_ip_out) | |
591 | fprintf(f, | |
592 | "%sSmackLabelIPOut: %s\n", | |
593 | prefix, s->smack_ip_out); | |
594 | ||
3900e5fd LP |
595 | if (!isempty(s->user) || !isempty(s->group)) |
596 | fprintf(f, | |
597 | "%sOwnerUser: %s\n" | |
598 | "%sOwnerGroup: %s\n", | |
599 | prefix, strna(s->user), | |
600 | prefix, strna(s->group)); | |
601 | ||
3cd761e4 | 602 | if (s->keep_alive_time > 0) |
209e9dcd | 603 | fprintf(f, |
3cd761e4 LP |
604 | "%sKeepAliveTimeSec: %s\n", |
605 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->keep_alive_time, USEC_PER_SEC)); | |
209e9dcd | 606 | |
3cd761e4 | 607 | if (s->keep_alive_interval) |
209e9dcd | 608 | fprintf(f, |
3cd761e4 LP |
609 | "%sKeepAliveIntervalSec: %s\n", |
610 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->keep_alive_interval, USEC_PER_SEC)); | |
209e9dcd | 611 | |
3cd761e4 | 612 | if (s->keep_alive_cnt) |
209e9dcd SS |
613 | fprintf(f, |
614 | "%sKeepAliveProbes: %u\n", | |
615 | prefix, s->keep_alive_cnt); | |
616 | ||
3cd761e4 | 617 | if (s->defer_accept) |
cc567c9b | 618 | fprintf(f, |
3cd761e4 LP |
619 | "%sDeferAcceptSec: %s\n", |
620 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->defer_accept, USEC_PER_SEC)); | |
cc567c9b | 621 | |
034c6ed7 | 622 | LIST_FOREACH(port, p, s->ports) { |
5cb5a6ff | 623 | |
542563ba LP |
624 | if (p->type == SOCKET_SOCKET) { |
625 | const char *t; | |
626 | int r; | |
e364ad06 | 627 | char *k = NULL; |
542563ba LP |
628 | |
629 | if ((r = socket_address_print(&p->address, &k)) < 0) | |
630 | t = strerror(-r); | |
631 | else | |
632 | t = k; | |
633 | ||
7a22745a | 634 | fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t); |
542563ba | 635 | free(k); |
b0a3f2bc LP |
636 | } else if (p->type == SOCKET_SPECIAL) |
637 | fprintf(f, "%sListenSpecial: %s\n", prefix, p->path); | |
916abb21 LP |
638 | else if (p->type == SOCKET_MQUEUE) |
639 | fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path); | |
b0a3f2bc | 640 | else |
542563ba LP |
641 | fprintf(f, "%sListenFIFO: %s\n", prefix, p->path); |
642 | } | |
5cb5a6ff LP |
643 | |
644 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 645 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff | 646 | |
e537352b | 647 | for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) { |
c43d20a0 LP |
648 | if (!s->exec_command[c]) |
649 | continue; | |
5cb5a6ff | 650 | |
40d50879 | 651 | fprintf(f, "%s-> %s:\n", |
a16e1123 | 652 | prefix, socket_exec_command_to_string(c)); |
c43d20a0 LP |
653 | |
654 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff LP |
655 | } |
656 | } | |
657 | ||
4f2d528d LP |
658 | static int instance_from_socket(int fd, unsigned nr, char **instance) { |
659 | socklen_t l; | |
660 | char *r; | |
9d16d0c7 | 661 | union sockaddr_union local, remote; |
4f2d528d LP |
662 | |
663 | assert(fd >= 0); | |
664 | assert(instance); | |
665 | ||
666 | l = sizeof(local); | |
667 | if (getsockname(fd, &local.sa, &l) < 0) | |
668 | return -errno; | |
669 | ||
670 | l = sizeof(remote); | |
671 | if (getpeername(fd, &remote.sa, &l) < 0) | |
672 | return -errno; | |
673 | ||
674 | switch (local.sa.sa_family) { | |
675 | ||
676 | case AF_INET: { | |
677 | uint32_t | |
678 | a = ntohl(local.in.sin_addr.s_addr), | |
679 | b = ntohl(remote.in.sin_addr.s_addr); | |
680 | ||
681 | if (asprintf(&r, | |
77b088c2 LP |
682 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
683 | nr, | |
4f2d528d LP |
684 | a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF, |
685 | ntohs(local.in.sin_port), | |
686 | b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF, | |
687 | ntohs(remote.in.sin_port)) < 0) | |
688 | return -ENOMEM; | |
689 | ||
690 | break; | |
691 | } | |
692 | ||
693 | case AF_INET6: { | |
c65a0b14 | 694 | static const unsigned char ipv4_prefix[] = { |
2b061f5a LP |
695 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF |
696 | }; | |
697 | ||
698 | if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 && | |
699 | memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) { | |
700 | const uint8_t | |
701 | *a = local.in6.sin6_addr.s6_addr+12, | |
702 | *b = remote.in6.sin6_addr.s6_addr+12; | |
703 | ||
704 | if (asprintf(&r, | |
77b088c2 LP |
705 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
706 | nr, | |
2b061f5a LP |
707 | a[0], a[1], a[2], a[3], |
708 | ntohs(local.in6.sin6_port), | |
709 | b[0], b[1], b[2], b[3], | |
710 | ntohs(remote.in6.sin6_port)) < 0) | |
711 | return -ENOMEM; | |
712 | } else { | |
713 | char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN]; | |
714 | ||
715 | if (asprintf(&r, | |
77b088c2 LP |
716 | "%u-%s:%u-%s:%u", |
717 | nr, | |
2b061f5a LP |
718 | inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)), |
719 | ntohs(local.in6.sin6_port), | |
720 | inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)), | |
721 | ntohs(remote.in6.sin6_port)) < 0) | |
722 | return -ENOMEM; | |
723 | } | |
4f2d528d LP |
724 | |
725 | break; | |
726 | } | |
727 | ||
728 | case AF_UNIX: { | |
729 | struct ucred ucred; | |
eff05270 | 730 | int k; |
4f2d528d | 731 | |
eff05270 | 732 | k = getpeercred(fd, &ucred); |
d38f6e34 ZJS |
733 | if (k >= 0) { |
734 | if (asprintf(&r, | |
735 | "%u-"PID_FMT"-"UID_FMT, | |
736 | nr, ucred.pid, ucred.uid) < 0) | |
737 | return -ENOMEM; | |
738 | } else if (k == -ENODATA) { | |
739 | /* This handles the case where somebody is | |
740 | * connecting from another pid/uid namespace | |
741 | * (e.g. from outside of our container). */ | |
742 | if (asprintf(&r, | |
743 | "%u-unknown", | |
744 | nr) < 0) | |
745 | return -ENOMEM; | |
746 | } else | |
eff05270 | 747 | return k; |
2f20a8eb | 748 | |
2f20a8eb | 749 | break; |
4f2d528d LP |
750 | } |
751 | ||
752 | default: | |
753 | assert_not_reached("Unhandled socket type."); | |
754 | } | |
755 | ||
756 | *instance = r; | |
757 | return 0; | |
758 | } | |
759 | ||
034c6ed7 | 760 | static void socket_close_fds(Socket *s) { |
83c60c9f | 761 | SocketPort *p; |
811ba7a0 | 762 | char **i; |
83c60c9f LP |
763 | |
764 | assert(s); | |
765 | ||
034c6ed7 | 766 | LIST_FOREACH(port, p, s->ports) { |
718db961 LP |
767 | |
768 | p->event_source = sd_event_source_unref(p->event_source); | |
769 | ||
83c60c9f LP |
770 | if (p->fd < 0) |
771 | continue; | |
772 | ||
03e334a1 | 773 | p->fd = safe_close(p->fd); |
a16e1123 | 774 | |
bd1fe7c7 LP |
775 | /* One little note: we should normally not delete any |
776 | * sockets in the file system here! After all some | |
777 | * other process we spawned might still have a | |
778 | * reference of this fd and wants to continue to use | |
779 | * it. Therefore we delete sockets in the file system | |
780 | * before we create a new one, not after we stopped | |
781 | * using one! */ | |
782 | ||
783 | if (s->remove_on_stop) { | |
784 | switch (p->type) { | |
785 | ||
786 | case SOCKET_FIFO: | |
787 | unlink(p->path); | |
788 | break; | |
789 | ||
790 | case SOCKET_MQUEUE: | |
791 | mq_unlink(p->path); | |
792 | break; | |
793 | ||
794 | case SOCKET_SOCKET: | |
795 | socket_address_unlink(&p->address); | |
796 | break; | |
797 | ||
798 | default: | |
799 | break; | |
800 | } | |
801 | } | |
83c60c9f | 802 | } |
811ba7a0 LP |
803 | |
804 | if (s->remove_on_stop) | |
805 | STRV_FOREACH(i, s->symlinks) | |
806 | unlink(*i); | |
83c60c9f LP |
807 | } |
808 | ||
4fd5948e LP |
809 | static void socket_apply_socket_options(Socket *s, int fd) { |
810 | assert(s); | |
811 | assert(fd >= 0); | |
812 | ||
813 | if (s->keep_alive) { | |
814 | int b = s->keep_alive; | |
815 | if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0) | |
66870f90 | 816 | log_warning_unit(UNIT(s)->id, "SO_KEEPALIVE failed: %m"); |
4fd5948e LP |
817 | } |
818 | ||
209e9dcd SS |
819 | if (s->keep_alive_time) { |
820 | int value = s->keep_alive_time / USEC_PER_SEC; | |
821 | if (setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &value, sizeof(value)) < 0) | |
822 | log_warning_unit(UNIT(s)->id, "TCP_KEEPIDLE failed: %m"); | |
823 | } | |
824 | ||
825 | if (s->keep_alive_interval) { | |
826 | int value = s->keep_alive_interval / USEC_PER_SEC; | |
827 | if (setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &value, sizeof(value)) < 0) | |
828 | log_warning_unit(UNIT(s)->id, "TCP_KEEPINTVL failed: %m"); | |
829 | } | |
830 | ||
831 | if (s->keep_alive_cnt) { | |
832 | int value = s->keep_alive_cnt; | |
833 | if (setsockopt(fd, SOL_SOCKET, TCP_KEEPCNT, &value, sizeof(value)) < 0) | |
834 | log_warning_unit(UNIT(s)->id, "TCP_KEEPCNT failed: %m"); | |
835 | } | |
836 | ||
cc567c9b SS |
837 | if (s->defer_accept) { |
838 | int value = s->defer_accept / USEC_PER_SEC; | |
839 | if (setsockopt(fd, SOL_TCP, TCP_DEFER_ACCEPT, &value, sizeof(value)) < 0) | |
840 | log_warning_unit(UNIT(s)->id, "TCP_DEFER_ACCEPT failed: %m"); | |
841 | } | |
842 | ||
4427c3f4 SS |
843 | if (s->no_delay) { |
844 | int b = s->no_delay; | |
845 | if (setsockopt(fd, SOL_TCP, TCP_NODELAY, &b, sizeof(b)) < 0) | |
846 | log_warning_unit(UNIT(s)->id, "TCP_NODELAY failed: %m"); | |
847 | } | |
848 | ||
ec6370a2 LP |
849 | if (s->broadcast) { |
850 | int one = 1; | |
851 | if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0) | |
66870f90 | 852 | log_warning_unit(UNIT(s)->id, "SO_BROADCAST failed: %m"); |
ec6370a2 LP |
853 | } |
854 | ||
d68af586 MS |
855 | if (s->pass_cred) { |
856 | int one = 1; | |
857 | if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) | |
66870f90 | 858 | log_warning_unit(UNIT(s)->id, "SO_PASSCRED failed: %m"); |
d68af586 MS |
859 | } |
860 | ||
54ecda32 LP |
861 | if (s->pass_sec) { |
862 | int one = 1; | |
863 | if (setsockopt(fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one)) < 0) | |
66870f90 | 864 | log_warning_unit(UNIT(s)->id, "SO_PASSSEC failed: %m"); |
54ecda32 LP |
865 | } |
866 | ||
4fd5948e LP |
867 | if (s->priority >= 0) |
868 | if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0) | |
66870f90 | 869 | log_warning_unit(UNIT(s)->id, "SO_PRIORITY failed: %m"); |
4fd5948e LP |
870 | |
871 | if (s->receive_buffer > 0) { | |
872 | int value = (int) s->receive_buffer; | |
7d9eaa84 LP |
873 | |
874 | /* We first try with SO_RCVBUFFORCE, in case we have the perms for that */ | |
875 | ||
b8cef44e | 876 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0) |
7d9eaa84 | 877 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0) |
66870f90 | 878 | log_warning_unit(UNIT(s)->id, "SO_RCVBUF failed: %m"); |
4fd5948e LP |
879 | } |
880 | ||
881 | if (s->send_buffer > 0) { | |
882 | int value = (int) s->send_buffer; | |
b8cef44e | 883 | if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0) |
7d9eaa84 | 884 | if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)) < 0) |
66870f90 | 885 | log_warning_unit(UNIT(s)->id, "SO_SNDBUF failed: %m"); |
4fd5948e LP |
886 | } |
887 | ||
888 | if (s->mark >= 0) | |
889 | if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0) | |
66870f90 | 890 | log_warning_unit(UNIT(s)->id, "SO_MARK failed: %m"); |
4fd5948e LP |
891 | |
892 | if (s->ip_tos >= 0) | |
893 | if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0) | |
66870f90 | 894 | log_warning_unit(UNIT(s)->id, "IP_TOS failed: %m"); |
4fd5948e | 895 | |
46925ac5 LP |
896 | if (s->ip_ttl >= 0) { |
897 | int r, x; | |
898 | ||
899 | r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl)); | |
5bfcc1c6 FF |
900 | |
901 | if (socket_ipv6_is_supported()) | |
902 | x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl)); | |
903 | else { | |
904 | x = -1; | |
905 | errno = EAFNOSUPPORT; | |
906 | } | |
46925ac5 LP |
907 | |
908 | if (r < 0 && x < 0) | |
66870f90 ZJS |
909 | log_warning_unit(UNIT(s)->id, |
910 | "IP_TTL/IPV6_UNICAST_HOPS failed: %m"); | |
46925ac5 | 911 | } |
cebf8b20 TT |
912 | |
913 | if (s->tcp_congestion) | |
914 | if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0) | |
66870f90 | 915 | log_warning_unit(UNIT(s)->id, "TCP_CONGESTION failed: %m"); |
0eb59ccf | 916 | |
718db961 LP |
917 | if (s->reuse_port) { |
918 | int b = s->reuse_port; | |
f0511bd7 | 919 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &b, sizeof(b)) < 0) |
f7db7a69 SL |
920 | log_warning_unit(UNIT(s)->id, "SO_REUSEPORT failed: %m"); |
921 | } | |
922 | ||
9a4e038c KS |
923 | if (s->smack_ip_in) |
924 | if (smack_label_ip_in_fd(fd, s->smack_ip_in) < 0) | |
925 | log_error_unit(UNIT(s)->id, "smack_label_ip_in_fd: %m"); | |
926 | ||
927 | if (s->smack_ip_out) | |
928 | if (smack_label_ip_out_fd(fd, s->smack_ip_out) < 0) | |
929 | log_error_unit(UNIT(s)->id, "smack_label_ip_out_fd: %m"); | |
4fd5948e LP |
930 | } |
931 | ||
b15bdda8 | 932 | static void socket_apply_fifo_options(Socket *s, int fd) { |
4fd5948e LP |
933 | assert(s); |
934 | assert(fd >= 0); | |
935 | ||
936 | if (s->pipe_size > 0) | |
937 | if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0) | |
66870f90 ZJS |
938 | log_warning_unit(UNIT(s)->id, |
939 | "F_SETPIPE_SZ: %m"); | |
0eb59ccf | 940 | |
9a4e038c KS |
941 | if (s->smack) |
942 | if (smack_label_fd(fd, s->smack) < 0) | |
943 | log_error_unit(UNIT(s)->id, "smack_label_fd: %m"); | |
4fd5948e LP |
944 | } |
945 | ||
b15bdda8 LP |
946 | static int fifo_address_create( |
947 | const char *path, | |
948 | mode_t directory_mode, | |
949 | mode_t socket_mode, | |
b15bdda8 LP |
950 | int *_fd) { |
951 | ||
7a58bfa4 | 952 | int fd = -1, r = 0; |
b15bdda8 LP |
953 | struct stat st; |
954 | mode_t old_mask; | |
955 | ||
956 | assert(path); | |
957 | assert(_fd); | |
958 | ||
d2e54fae | 959 | mkdir_parents_label(path, directory_mode); |
b15bdda8 | 960 | |
e9a5ef7c KS |
961 | r = label_context_set(path, S_IFIFO); |
962 | if (r < 0) | |
56cf987f | 963 | goto fail; |
b15bdda8 LP |
964 | |
965 | /* Enforce the right access mode for the fifo */ | |
966 | old_mask = umask(~ socket_mode); | |
967 | ||
968 | /* Include the original umask in our mask */ | |
969 | umask(~socket_mode | old_mask); | |
970 | ||
971 | r = mkfifo(path, socket_mode); | |
972 | umask(old_mask); | |
973 | ||
94bc2731 | 974 | if (r < 0 && errno != EEXIST) { |
b15bdda8 LP |
975 | r = -errno; |
976 | goto fail; | |
977 | } | |
978 | ||
e4f44e73 | 979 | if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) { |
b15bdda8 LP |
980 | r = -errno; |
981 | goto fail; | |
982 | } | |
983 | ||
e9a5ef7c | 984 | label_context_clear(); |
7a58bfa4 | 985 | |
b15bdda8 LP |
986 | if (fstat(fd, &st) < 0) { |
987 | r = -errno; | |
988 | goto fail; | |
989 | } | |
990 | ||
991 | if (!S_ISFIFO(st.st_mode) || | |
de0200fc | 992 | (st.st_mode & 0777) != (socket_mode & ~old_mask) || |
e4f44e73 DR |
993 | st.st_uid != getuid() || |
994 | st.st_gid != getgid()) { | |
b15bdda8 LP |
995 | |
996 | r = -EEXIST; | |
997 | goto fail; | |
998 | } | |
999 | ||
1000 | *_fd = fd; | |
1001 | return 0; | |
1002 | ||
1003 | fail: | |
e9a5ef7c | 1004 | label_context_clear(); |
03e334a1 | 1005 | safe_close(fd); |
b15bdda8 LP |
1006 | |
1007 | return r; | |
1008 | } | |
1009 | ||
b0a3f2bc LP |
1010 | static int special_address_create( |
1011 | const char *path, | |
1012 | int *_fd) { | |
1013 | ||
1014 | int fd = -1, r = 0; | |
1015 | struct stat st; | |
1016 | ||
1017 | assert(path); | |
1018 | assert(_fd); | |
1019 | ||
811ba7a0 LP |
1020 | fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW); |
1021 | if (fd < 0) { | |
b0a3f2bc LP |
1022 | r = -errno; |
1023 | goto fail; | |
1024 | } | |
1025 | ||
1026 | if (fstat(fd, &st) < 0) { | |
1027 | r = -errno; | |
1028 | goto fail; | |
1029 | } | |
1030 | ||
1031 | /* Check whether this is a /proc, /sys or /dev file or char device */ | |
1032 | if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) { | |
1033 | r = -EEXIST; | |
1034 | goto fail; | |
1035 | } | |
1036 | ||
1037 | *_fd = fd; | |
1038 | return 0; | |
1039 | ||
1040 | fail: | |
03e334a1 | 1041 | safe_close(fd); |
b0a3f2bc LP |
1042 | |
1043 | return r; | |
1044 | } | |
1045 | ||
916abb21 LP |
1046 | static int mq_address_create( |
1047 | const char *path, | |
1048 | mode_t mq_mode, | |
1049 | long maxmsg, | |
1050 | long msgsize, | |
1051 | int *_fd) { | |
1052 | ||
1053 | int fd = -1, r = 0; | |
1054 | struct stat st; | |
1055 | mode_t old_mask; | |
1056 | struct mq_attr _attr, *attr = NULL; | |
1057 | ||
1058 | assert(path); | |
1059 | assert(_fd); | |
1060 | ||
1061 | if (maxmsg > 0 && msgsize > 0) { | |
1062 | zero(_attr); | |
1063 | _attr.mq_flags = O_NONBLOCK; | |
1064 | _attr.mq_maxmsg = maxmsg; | |
1065 | _attr.mq_msgsize = msgsize; | |
1066 | attr = &_attr; | |
1067 | } | |
1068 | ||
1069 | /* Enforce the right access mode for the mq */ | |
1070 | old_mask = umask(~ mq_mode); | |
1071 | ||
1072 | /* Include the original umask in our mask */ | |
1073 | umask(~mq_mode | old_mask); | |
916abb21 LP |
1074 | fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr); |
1075 | umask(old_mask); | |
1076 | ||
8ea913b2 | 1077 | if (fd < 0) { |
916abb21 LP |
1078 | r = -errno; |
1079 | goto fail; | |
1080 | } | |
1081 | ||
1082 | if (fstat(fd, &st) < 0) { | |
1083 | r = -errno; | |
1084 | goto fail; | |
1085 | } | |
1086 | ||
1087 | if ((st.st_mode & 0777) != (mq_mode & ~old_mask) || | |
1088 | st.st_uid != getuid() || | |
1089 | st.st_gid != getgid()) { | |
1090 | ||
1091 | r = -EEXIST; | |
1092 | goto fail; | |
1093 | } | |
1094 | ||
1095 | *_fd = fd; | |
1096 | return 0; | |
1097 | ||
1098 | fail: | |
03e334a1 | 1099 | safe_close(fd); |
916abb21 LP |
1100 | return r; |
1101 | } | |
1102 | ||
811ba7a0 LP |
1103 | static int socket_symlink(Socket *s) { |
1104 | const char *p; | |
1105 | char **i; | |
1106 | ||
1107 | assert(s); | |
1108 | ||
1109 | p = socket_find_symlink_target(s); | |
1110 | if (!p) | |
1111 | return 0; | |
1112 | ||
1113 | STRV_FOREACH(i, s->symlinks) | |
1114 | symlink(p, *i); | |
1115 | ||
1116 | return 0; | |
1117 | } | |
1118 | ||
034c6ed7 | 1119 | static int socket_open_fds(Socket *s) { |
83c60c9f LP |
1120 | SocketPort *p; |
1121 | int r; | |
56cf987f | 1122 | char *label = NULL; |
049f8642 | 1123 | bool know_label = false; |
83c60c9f LP |
1124 | |
1125 | assert(s); | |
1126 | ||
034c6ed7 | 1127 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f | 1128 | |
034c6ed7 LP |
1129 | if (p->fd >= 0) |
1130 | continue; | |
83c60c9f LP |
1131 | |
1132 | if (p->type == SOCKET_SOCKET) { | |
16115b0a MS |
1133 | if (!know_label && s->selinux_context_from_net) { |
1134 | r = label_get_our_label(&label); | |
1135 | if (r < 0) | |
1136 | return r; | |
1137 | know_label = true; | |
1138 | } else if (!know_label) { | |
049f8642 | 1139 | |
bd1fe7c7 LP |
1140 | r = socket_instantiate_service(s); |
1141 | if (r < 0) | |
049f8642 LP |
1142 | return r; |
1143 | ||
9444b1f2 | 1144 | if (UNIT_ISSET(s->service) && |
57020a3a LP |
1145 | SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) { |
1146 | r = label_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label); | |
bd1fe7c7 LP |
1147 | if (r < 0 && r != -EPERM) |
1148 | return r; | |
189583d7 | 1149 | } |
049f8642 LP |
1150 | |
1151 | know_label = true; | |
1152 | } | |
1153 | ||
175a3d25 LP |
1154 | r = socket_address_listen( |
1155 | &p->address, | |
1156 | SOCK_CLOEXEC|SOCK_NONBLOCK, | |
1157 | s->backlog, | |
1158 | s->bind_ipv6_only, | |
1159 | s->bind_to_device, | |
1160 | s->free_bind, | |
1161 | s->transparent, | |
1162 | s->directory_mode, | |
1163 | s->socket_mode, | |
1164 | label); | |
1165 | if (r < 0) | |
83c60c9f LP |
1166 | goto rollback; |
1167 | ||
175a3d25 | 1168 | p->fd = r; |
4fd5948e | 1169 | socket_apply_socket_options(s, p->fd); |
811ba7a0 | 1170 | socket_symlink(s); |
4fd5948e | 1171 | |
b0a3f2bc LP |
1172 | } else if (p->type == SOCKET_SPECIAL) { |
1173 | ||
175a3d25 LP |
1174 | r = special_address_create( |
1175 | p->path, | |
1176 | &p->fd); | |
1177 | if (r < 0) | |
b0a3f2bc LP |
1178 | goto rollback; |
1179 | ||
b15bdda8 | 1180 | } else if (p->type == SOCKET_FIFO) { |
83c60c9f | 1181 | |
175a3d25 LP |
1182 | r = fifo_address_create( |
1183 | p->path, | |
1184 | s->directory_mode, | |
1185 | s->socket_mode, | |
1186 | &p->fd); | |
1187 | if (r < 0) | |
83c60c9f | 1188 | goto rollback; |
83c60c9f | 1189 | |
b15bdda8 | 1190 | socket_apply_fifo_options(s, p->fd); |
811ba7a0 LP |
1191 | socket_symlink(s); |
1192 | ||
916abb21 | 1193 | } else if (p->type == SOCKET_MQUEUE) { |
83c60c9f | 1194 | |
175a3d25 LP |
1195 | r = mq_address_create( |
1196 | p->path, | |
1197 | s->socket_mode, | |
1198 | s->mq_maxmsg, | |
1199 | s->mq_msgsize, | |
1200 | &p->fd); | |
1201 | if (r < 0) | |
916abb21 | 1202 | goto rollback; |
b15bdda8 LP |
1203 | } else |
1204 | assert_not_reached("Unknown port type"); | |
034c6ed7 LP |
1205 | } |
1206 | ||
56cf987f | 1207 | label_free(label); |
034c6ed7 LP |
1208 | return 0; |
1209 | ||
1210 | rollback: | |
1211 | socket_close_fds(s); | |
56cf987f | 1212 | label_free(label); |
034c6ed7 LP |
1213 | return r; |
1214 | } | |
1215 | ||
1216 | static void socket_unwatch_fds(Socket *s) { | |
1217 | SocketPort *p; | |
718db961 | 1218 | int r; |
9152c765 | 1219 | |
034c6ed7 LP |
1220 | assert(s); |
1221 | ||
1222 | LIST_FOREACH(port, p, s->ports) { | |
1223 | if (p->fd < 0) | |
1224 | continue; | |
1225 | ||
a4152e3f LP |
1226 | if (!p->event_source) |
1227 | continue; | |
1228 | ||
1229 | r = sd_event_source_set_enabled(p->event_source, SD_EVENT_OFF); | |
1230 | if (r < 0) | |
1231 | log_debug_unit(UNIT(s)->id, "Failed to disable event source."); | |
83c60c9f | 1232 | } |
034c6ed7 LP |
1233 | } |
1234 | ||
1235 | static int socket_watch_fds(Socket *s) { | |
1236 | SocketPort *p; | |
1237 | int r; | |
1238 | ||
1239 | assert(s); | |
83c60c9f | 1240 | |
034c6ed7 LP |
1241 | LIST_FOREACH(port, p, s->ports) { |
1242 | if (p->fd < 0) | |
1243 | continue; | |
1244 | ||
718db961 LP |
1245 | if (p->event_source) |
1246 | r = sd_event_source_set_enabled(p->event_source, SD_EVENT_ON); | |
1247 | else | |
151b9b96 | 1248 | r = sd_event_add_io(UNIT(s)->manager->event, &p->event_source, p->fd, EPOLLIN, socket_dispatch_io, p); |
4f2d528d | 1249 | |
718db961 LP |
1250 | if (r < 0) { |
1251 | log_warning_unit(UNIT(s)->id, "Failed to watch listening fds: %s", strerror(-r)); | |
034c6ed7 | 1252 | goto fail; |
718db961 | 1253 | } |
034c6ed7 | 1254 | } |
83c60c9f | 1255 | |
542563ba | 1256 | return 0; |
83c60c9f | 1257 | |
034c6ed7 LP |
1258 | fail: |
1259 | socket_unwatch_fds(s); | |
1260 | return r; | |
1261 | } | |
1262 | ||
1263 | static void socket_set_state(Socket *s, SocketState state) { | |
1264 | SocketState old_state; | |
1265 | assert(s); | |
1266 | ||
1267 | old_state = s->state; | |
1268 | s->state = state; | |
1269 | ||
bd1fe7c7 LP |
1270 | if (!IN_SET(state, |
1271 | SOCKET_START_PRE, | |
3900e5fd | 1272 | SOCKET_START_CHOWN, |
bd1fe7c7 LP |
1273 | SOCKET_START_POST, |
1274 | SOCKET_STOP_PRE, | |
1275 | SOCKET_STOP_PRE_SIGTERM, | |
1276 | SOCKET_STOP_PRE_SIGKILL, | |
1277 | SOCKET_STOP_POST, | |
1278 | SOCKET_FINAL_SIGTERM, | |
1279 | SOCKET_FINAL_SIGKILL)) { | |
718db961 LP |
1280 | |
1281 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
5e94833f | 1282 | socket_unwatch_control_pid(s); |
034c6ed7 | 1283 | s->control_command = NULL; |
a16e1123 | 1284 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
e537352b | 1285 | } |
034c6ed7 | 1286 | |
a16e1123 LP |
1287 | if (state != SOCKET_LISTENING) |
1288 | socket_unwatch_fds(s); | |
1289 | ||
bd1fe7c7 | 1290 | if (!IN_SET(state, |
3900e5fd | 1291 | SOCKET_START_CHOWN, |
bd1fe7c7 LP |
1292 | SOCKET_START_POST, |
1293 | SOCKET_LISTENING, | |
1294 | SOCKET_RUNNING, | |
1295 | SOCKET_STOP_PRE, | |
1296 | SOCKET_STOP_PRE_SIGTERM, | |
1297 | SOCKET_STOP_PRE_SIGKILL)) | |
034c6ed7 LP |
1298 | socket_close_fds(s); |
1299 | ||
e537352b | 1300 | if (state != old_state) |
e821075a LP |
1301 | log_debug_unit(UNIT(s)->id, "%s changed %s -> %s", |
1302 | UNIT(s)->id, socket_state_to_string(old_state), socket_state_to_string(state)); | |
acbb0225 | 1303 | |
e2f3b44c | 1304 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
1305 | } |
1306 | ||
a16e1123 LP |
1307 | static int socket_coldplug(Unit *u) { |
1308 | Socket *s = SOCKET(u); | |
1309 | int r; | |
1310 | ||
1311 | assert(s); | |
1312 | assert(s->state == SOCKET_DEAD); | |
1313 | ||
e821075a LP |
1314 | if (s->deserialized_state == s->state) |
1315 | return 0; | |
a16e1123 | 1316 | |
3900e5fd LP |
1317 | if (IN_SET(s->deserialized_state, |
1318 | SOCKET_START_PRE, | |
1319 | SOCKET_START_CHOWN, | |
1320 | SOCKET_START_POST, | |
1321 | SOCKET_STOP_PRE, | |
1322 | SOCKET_STOP_PRE_SIGTERM, | |
1323 | SOCKET_STOP_PRE_SIGKILL, | |
1324 | SOCKET_STOP_POST, | |
1325 | SOCKET_FINAL_SIGTERM, | |
1326 | SOCKET_FINAL_SIGKILL)) { | |
a16e1123 | 1327 | |
e821075a LP |
1328 | if (s->control_pid <= 0) |
1329 | return -EBADMSG; | |
a16e1123 | 1330 | |
e821075a LP |
1331 | r = unit_watch_pid(UNIT(s), s->control_pid); |
1332 | if (r < 0) | |
1333 | return r; | |
a16e1123 | 1334 | |
e821075a LP |
1335 | r = socket_arm_timer(s); |
1336 | if (r < 0) | |
1337 | return r; | |
1338 | } | |
a16e1123 | 1339 | |
3900e5fd LP |
1340 | if (IN_SET(s->deserialized_state, |
1341 | SOCKET_START_CHOWN, | |
1342 | SOCKET_START_POST, | |
1343 | SOCKET_LISTENING, | |
1344 | SOCKET_RUNNING, | |
1345 | SOCKET_STOP_PRE, | |
1346 | SOCKET_STOP_PRE_SIGTERM, | |
1347 | SOCKET_STOP_PRE_SIGKILL)) { | |
e821075a LP |
1348 | r = socket_open_fds(s); |
1349 | if (r < 0) | |
1350 | return r; | |
1351 | } | |
a16e1123 | 1352 | |
e821075a LP |
1353 | if (s->deserialized_state == SOCKET_LISTENING) { |
1354 | r = socket_watch_fds(s); | |
1355 | if (r < 0) | |
1356 | return r; | |
a16e1123 LP |
1357 | } |
1358 | ||
e821075a | 1359 | socket_set_state(s, s->deserialized_state); |
a16e1123 LP |
1360 | return 0; |
1361 | } | |
1362 | ||
e537352b | 1363 | static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { |
3900e5fd | 1364 | _cleanup_free_ char **argv = NULL; |
034c6ed7 LP |
1365 | pid_t pid; |
1366 | int r; | |
9fa95f85 DM |
1367 | ExecParameters exec_params = { |
1368 | .apply_permissions = true, | |
1369 | .apply_chroot = true, | |
1370 | .apply_tty_stdin = true, | |
1371 | }; | |
034c6ed7 LP |
1372 | |
1373 | assert(s); | |
1374 | assert(c); | |
1375 | assert(_pid); | |
1376 | ||
4ad49000 LP |
1377 | unit_realize_cgroup(UNIT(s)); |
1378 | ||
613b411c LP |
1379 | r = unit_setup_exec_runtime(UNIT(s)); |
1380 | if (r < 0) | |
1381 | goto fail; | |
1382 | ||
718db961 | 1383 | r = socket_arm_timer(s); |
36697dc0 | 1384 | if (r < 0) |
e537352b | 1385 | goto fail; |
034c6ed7 | 1386 | |
19f6d710 LP |
1387 | r = unit_full_printf_strv(UNIT(s), c->argv, &argv); |
1388 | if (r < 0) | |
9e2f7c11 | 1389 | goto fail; |
9e2f7c11 | 1390 | |
9fa95f85 DM |
1391 | exec_params.argv = argv; |
1392 | exec_params.environment = UNIT(s)->manager->environment; | |
1393 | exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn; | |
1394 | exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported; | |
1395 | exec_params.cgroup_path = UNIT(s)->cgroup_path; | |
1396 | exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager); | |
1397 | exec_params.unit_id = UNIT(s)->id; | |
1398 | ||
9e2f7c11 | 1399 | r = exec_spawn(c, |
9e2f7c11 | 1400 | &s->exec_context, |
9fa95f85 | 1401 | &exec_params, |
613b411c | 1402 | s->exec_runtime, |
9e2f7c11 | 1403 | &pid); |
cee288ad TA |
1404 | if (r < 0) |
1405 | goto fail; | |
9e2f7c11 | 1406 | |
3900e5fd | 1407 | r = unit_watch_pid(UNIT(s), pid); |
9e2f7c11 | 1408 | if (r < 0) |
3900e5fd | 1409 | /* FIXME: we need to do something here */ |
034c6ed7 LP |
1410 | goto fail; |
1411 | ||
3900e5fd LP |
1412 | *_pid = pid; |
1413 | return 0; | |
1414 | ||
1415 | fail: | |
1416 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
1417 | return r; | |
1418 | } | |
1419 | ||
1420 | static int socket_chown(Socket *s, pid_t *_pid) { | |
1421 | pid_t pid; | |
1422 | int r; | |
1423 | ||
1424 | r = socket_arm_timer(s); | |
1425 | if (r < 0) | |
1426 | goto fail; | |
1427 | ||
1428 | /* We have to resolve the user names out-of-process, hence | |
1429 | * let's fork here. It's messy, but well, what can we do? */ | |
1430 | ||
1431 | pid = fork(); | |
1432 | if (pid < 0) | |
1433 | return -errno; | |
1434 | ||
1435 | if (pid == 0) { | |
1436 | SocketPort *p; | |
1437 | uid_t uid = (uid_t) -1; | |
1438 | gid_t gid = (gid_t) -1; | |
1439 | int ret; | |
1440 | ||
1441 | default_signals(SIGNALS_CRASH_HANDLER, SIGNALS_IGNORE, -1); | |
1442 | ignore_signals(SIGPIPE, -1); | |
1443 | log_forget_fds(); | |
1444 | ||
1445 | if (!isempty(s->user)) { | |
1446 | const char *user = s->user; | |
1447 | ||
1448 | r = get_user_creds(&user, &uid, &gid, NULL, NULL); | |
1449 | if (r < 0) { | |
1450 | ret = EXIT_USER; | |
1451 | goto fail_child; | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | if (!isempty(s->group)) { | |
1456 | const char *group = s->group; | |
1457 | ||
1458 | r = get_group_creds(&group, &gid); | |
1459 | if (r < 0) { | |
1460 | ret = EXIT_GROUP; | |
1461 | goto fail_child; | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | LIST_FOREACH(port, p, s->ports) { | |
e5a1c18d | 1466 | const char *path = NULL; |
3900e5fd LP |
1467 | |
1468 | if (p->type == SOCKET_SOCKET) | |
1469 | path = socket_address_get_path(&p->address); | |
1470 | else if (p->type == SOCKET_FIFO) | |
1471 | path = p->path; | |
1472 | ||
1473 | if (!path) | |
1474 | continue; | |
1475 | ||
1476 | if (chown(path, uid, gid) < 0) { | |
1477 | r = -errno; | |
1478 | ret = EXIT_CHOWN; | |
1479 | goto fail_child; | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | _exit(0); | |
1484 | ||
1485 | fail_child: | |
1486 | log_open(); | |
1487 | log_error("Failed to chown socket at step %s: %s", exit_status_to_string(ret, EXIT_STATUS_SYSTEMD), strerror(-r)); | |
1488 | ||
1489 | _exit(ret); | |
1490 | } | |
1491 | ||
718db961 LP |
1492 | r = unit_watch_pid(UNIT(s), pid); |
1493 | if (r < 0) | |
034c6ed7 | 1494 | goto fail; |
83c60c9f | 1495 | |
034c6ed7 | 1496 | *_pid = pid; |
034c6ed7 LP |
1497 | return 0; |
1498 | ||
1499 | fail: | |
718db961 | 1500 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
83c60c9f | 1501 | return r; |
542563ba LP |
1502 | } |
1503 | ||
cfc4eb4c | 1504 | static void socket_enter_dead(Socket *s, SocketResult f) { |
034c6ed7 LP |
1505 | assert(s); |
1506 | ||
cfc4eb4c LP |
1507 | if (f != SOCKET_SUCCESS) |
1508 | s->result = f; | |
034c6ed7 | 1509 | |
613b411c LP |
1510 | exec_runtime_destroy(s->exec_runtime); |
1511 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
1512 | ||
e66cf1a3 LP |
1513 | exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager)); |
1514 | ||
cfc4eb4c | 1515 | socket_set_state(s, s->result != SOCKET_SUCCESS ? SOCKET_FAILED : SOCKET_DEAD); |
034c6ed7 LP |
1516 | } |
1517 | ||
cfc4eb4c | 1518 | static void socket_enter_signal(Socket *s, SocketState state, SocketResult f); |
80876c20 | 1519 | |
cfc4eb4c | 1520 | static void socket_enter_stop_post(Socket *s, SocketResult f) { |
034c6ed7 LP |
1521 | int r; |
1522 | assert(s); | |
1523 | ||
cfc4eb4c LP |
1524 | if (f != SOCKET_SUCCESS) |
1525 | s->result = f; | |
034c6ed7 | 1526 | |
5e94833f | 1527 | socket_unwatch_control_pid(s); |
a16e1123 | 1528 | s->control_command_id = SOCKET_EXEC_STOP_POST; |
3900e5fd | 1529 | s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST]; |
a16e1123 | 1530 | |
3900e5fd LP |
1531 | if (s->control_command) { |
1532 | r = socket_spawn(s, s->control_command, &s->control_pid); | |
1533 | if (r < 0) | |
034c6ed7 LP |
1534 | goto fail; |
1535 | ||
80876c20 LP |
1536 | socket_set_state(s, SOCKET_STOP_POST); |
1537 | } else | |
cfc4eb4c | 1538 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_SUCCESS); |
034c6ed7 LP |
1539 | |
1540 | return; | |
1541 | ||
1542 | fail: | |
66870f90 ZJS |
1543 | log_warning_unit(UNIT(s)->id, |
1544 | "%s failed to run 'stop-post' task: %s", | |
1545 | UNIT(s)->id, strerror(-r)); | |
cfc4eb4c | 1546 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1547 | } |
1548 | ||
cfc4eb4c | 1549 | static void socket_enter_signal(Socket *s, SocketState state, SocketResult f) { |
034c6ed7 LP |
1550 | int r; |
1551 | ||
1552 | assert(s); | |
1553 | ||
cfc4eb4c LP |
1554 | if (f != SOCKET_SUCCESS) |
1555 | s->result = f; | |
034c6ed7 | 1556 | |
cd2086fe LP |
1557 | r = unit_kill_context( |
1558 | UNIT(s), | |
1559 | &s->kill_context, | |
1560 | state != SOCKET_STOP_PRE_SIGTERM && state != SOCKET_FINAL_SIGTERM, | |
1561 | -1, | |
1562 | s->control_pid, | |
1563 | false); | |
1564 | if (r < 0) | |
1565 | goto fail; | |
034c6ed7 | 1566 | |
cd2086fe | 1567 | if (r > 0) { |
718db961 | 1568 | r = socket_arm_timer(s); |
36697dc0 | 1569 | if (r < 0) |
80876c20 | 1570 | goto fail; |
d6ea93e3 | 1571 | |
80876c20 | 1572 | socket_set_state(s, state); |
ac84d1fb LP |
1573 | } else if (state == SOCKET_STOP_PRE_SIGTERM) |
1574 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_SUCCESS); | |
1575 | else if (state == SOCKET_STOP_PRE_SIGKILL) | |
cfc4eb4c | 1576 | socket_enter_stop_post(s, SOCKET_SUCCESS); |
ac84d1fb LP |
1577 | else if (state == SOCKET_FINAL_SIGTERM) |
1578 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_SUCCESS); | |
80876c20 | 1579 | else |
cfc4eb4c | 1580 | socket_enter_dead(s, SOCKET_SUCCESS); |
034c6ed7 LP |
1581 | |
1582 | return; | |
1583 | ||
1584 | fail: | |
e821075a | 1585 | log_warning_unit(UNIT(s)->id, "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); |
034c6ed7 LP |
1586 | |
1587 | if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
cfc4eb4c | 1588 | socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1589 | else |
cfc4eb4c | 1590 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1591 | } |
1592 | ||
cfc4eb4c | 1593 | static void socket_enter_stop_pre(Socket *s, SocketResult f) { |
034c6ed7 LP |
1594 | int r; |
1595 | assert(s); | |
1596 | ||
cfc4eb4c LP |
1597 | if (f != SOCKET_SUCCESS) |
1598 | s->result = f; | |
034c6ed7 | 1599 | |
5e94833f | 1600 | socket_unwatch_control_pid(s); |
a16e1123 | 1601 | s->control_command_id = SOCKET_EXEC_STOP_PRE; |
3900e5fd | 1602 | s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE]; |
a16e1123 | 1603 | |
3900e5fd LP |
1604 | if (s->control_command) { |
1605 | r = socket_spawn(s, s->control_command, &s->control_pid); | |
1606 | if (r < 0) | |
034c6ed7 LP |
1607 | goto fail; |
1608 | ||
80876c20 LP |
1609 | socket_set_state(s, SOCKET_STOP_PRE); |
1610 | } else | |
cfc4eb4c | 1611 | socket_enter_stop_post(s, SOCKET_SUCCESS); |
034c6ed7 LP |
1612 | |
1613 | return; | |
1614 | ||
1615 | fail: | |
e821075a | 1616 | log_warning_unit(UNIT(s)->id, "%s failed to run 'stop-pre' task: %s", UNIT(s)->id, strerror(-r)); |
cfc4eb4c | 1617 | socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1618 | } |
1619 | ||
e9af15c3 LP |
1620 | static void socket_enter_listening(Socket *s) { |
1621 | int r; | |
1622 | assert(s); | |
1623 | ||
cfc4eb4c LP |
1624 | r = socket_watch_fds(s); |
1625 | if (r < 0) { | |
e821075a | 1626 | log_warning_unit(UNIT(s)->id, "%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); |
e9af15c3 LP |
1627 | goto fail; |
1628 | } | |
1629 | ||
1630 | socket_set_state(s, SOCKET_LISTENING); | |
1631 | return; | |
1632 | ||
1633 | fail: | |
cfc4eb4c | 1634 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
e9af15c3 LP |
1635 | } |
1636 | ||
034c6ed7 LP |
1637 | static void socket_enter_start_post(Socket *s) { |
1638 | int r; | |
1639 | assert(s); | |
1640 | ||
3900e5fd LP |
1641 | socket_unwatch_control_pid(s); |
1642 | s->control_command_id = SOCKET_EXEC_START_POST; | |
1643 | s->control_command = s->exec_command[SOCKET_EXEC_START_POST]; | |
1644 | ||
1645 | if (s->control_command) { | |
1646 | r = socket_spawn(s, s->control_command, &s->control_pid); | |
1647 | if (r < 0) { | |
1648 | log_warning_unit(UNIT(s)->id, "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); | |
1649 | goto fail; | |
1650 | } | |
1651 | ||
1652 | socket_set_state(s, SOCKET_START_POST); | |
1653 | } else | |
1654 | socket_enter_listening(s); | |
1655 | ||
1656 | return; | |
1657 | ||
1658 | fail: | |
1659 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); | |
1660 | } | |
1661 | ||
1662 | static void socket_enter_start_chown(Socket *s) { | |
1663 | int r; | |
1664 | ||
1665 | assert(s); | |
1666 | ||
cfc4eb4c LP |
1667 | r = socket_open_fds(s); |
1668 | if (r < 0) { | |
e821075a | 1669 | log_warning_unit(UNIT(s)->id, "%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r)); |
034c6ed7 LP |
1670 | goto fail; |
1671 | } | |
1672 | ||
3900e5fd | 1673 | if (!isempty(s->user) || !isempty(s->group)) { |
5e94833f | 1674 | |
3900e5fd LP |
1675 | socket_unwatch_control_pid(s); |
1676 | s->control_command_id = SOCKET_EXEC_START_CHOWN; | |
1677 | s->control_command = NULL; | |
a16e1123 | 1678 | |
3900e5fd | 1679 | r = socket_chown(s, &s->control_pid); |
cfc4eb4c | 1680 | if (r < 0) { |
3900e5fd | 1681 | log_warning_unit(UNIT(s)->id, "%s failed to fork 'start-chown' task: %s", UNIT(s)->id, strerror(-r)); |
034c6ed7 LP |
1682 | goto fail; |
1683 | } | |
1684 | ||
3900e5fd | 1685 | socket_set_state(s, SOCKET_START_CHOWN); |
80876c20 | 1686 | } else |
3900e5fd | 1687 | socket_enter_start_post(s); |
034c6ed7 LP |
1688 | |
1689 | return; | |
1690 | ||
1691 | fail: | |
cfc4eb4c | 1692 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1693 | } |
1694 | ||
1695 | static void socket_enter_start_pre(Socket *s) { | |
1696 | int r; | |
1697 | assert(s); | |
1698 | ||
5e94833f | 1699 | socket_unwatch_control_pid(s); |
a16e1123 | 1700 | s->control_command_id = SOCKET_EXEC_START_PRE; |
3900e5fd | 1701 | s->control_command = s->exec_command[SOCKET_EXEC_START_PRE]; |
a16e1123 | 1702 | |
3900e5fd | 1703 | if (s->control_command) { |
e821075a | 1704 | r = socket_spawn(s, s->control_command, &s->control_pid); |
3900e5fd LP |
1705 | if (r < 0) { |
1706 | log_warning_unit(UNIT(s)->id, "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); | |
034c6ed7 | 1707 | goto fail; |
3900e5fd | 1708 | } |
034c6ed7 | 1709 | |
80876c20 LP |
1710 | socket_set_state(s, SOCKET_START_PRE); |
1711 | } else | |
3900e5fd | 1712 | socket_enter_start_chown(s); |
034c6ed7 LP |
1713 | |
1714 | return; | |
1715 | ||
1716 | fail: | |
cfc4eb4c | 1717 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1718 | } |
1719 | ||
4f2d528d | 1720 | static void socket_enter_running(Socket *s, int cfd) { |
718db961 | 1721 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 LP |
1722 | int r; |
1723 | ||
1724 | assert(s); | |
1725 | ||
ba3e67a7 LP |
1726 | /* We don't take connections anymore if we are supposed to |
1727 | * shut down anyway */ | |
31afa0a4 | 1728 | if (unit_stop_pending(UNIT(s))) { |
e821075a LP |
1729 | |
1730 | log_debug_unit(UNIT(s)->id, "Suppressing connection request on %s since unit stop is scheduled.", UNIT(s)->id); | |
5d909e3e | 1731 | |
7c610628 | 1732 | if (cfd >= 0) |
03e334a1 | 1733 | safe_close(cfd); |
7c610628 LP |
1734 | else { |
1735 | /* Flush all sockets by closing and reopening them */ | |
1736 | socket_close_fds(s); | |
1737 | ||
16ac4014 LP |
1738 | r = socket_open_fds(s); |
1739 | if (r < 0) { | |
1740 | log_warning_unit(UNIT(s)->id, "%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r)); | |
1741 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); | |
1742 | return; | |
1743 | } | |
1744 | ||
1a710b43 MS |
1745 | r = socket_watch_fds(s); |
1746 | if (r < 0) { | |
e821075a | 1747 | log_warning_unit(UNIT(s)->id, "%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); |
cfc4eb4c | 1748 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
7c610628 LP |
1749 | } |
1750 | } | |
1751 | ||
ba3e67a7 LP |
1752 | return; |
1753 | } | |
1754 | ||
4f2d528d | 1755 | if (cfd < 0) { |
57020a3a | 1756 | Iterator i; |
e821075a | 1757 | Unit *other; |
f976f3f6 | 1758 | bool pending = false; |
f976f3f6 LP |
1759 | |
1760 | /* If there's already a start pending don't bother to | |
1761 | * do anything */ | |
e821075a LP |
1762 | SET_FOREACH(other, UNIT(s)->dependencies[UNIT_TRIGGERS], i) |
1763 | if (unit_active_or_pending(other)) { | |
57020a3a LP |
1764 | pending = true; |
1765 | break; | |
1766 | } | |
f976f3f6 | 1767 | |
1a710b43 | 1768 | if (!pending) { |
640ace4a LP |
1769 | if (!UNIT_ISSET(s->service)) { |
1770 | log_error_unit(UNIT(s)->id, "%s: service to activate vanished, refusing activation.", UNIT(s)->id); | |
1771 | r = -ENOENT; | |
1772 | goto fail; | |
1773 | } | |
1774 | ||
1a710b43 MS |
1775 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT_DEREF(s->service), JOB_REPLACE, true, &error, NULL); |
1776 | if (r < 0) | |
f976f3f6 | 1777 | goto fail; |
1a710b43 | 1778 | } |
4f2d528d LP |
1779 | |
1780 | socket_set_state(s, SOCKET_RUNNING); | |
1781 | } else { | |
e55001eb | 1782 | _cleanup_free_ char *prefix = NULL, *instance = NULL, *name = NULL; |
b15bdda8 | 1783 | Service *service; |
4f2d528d | 1784 | |
6cf6bbc2 | 1785 | if (s->n_connections >= s->max_connections) { |
e821075a | 1786 | log_warning_unit(UNIT(s)->id, "%s: Too many incoming connections (%u)", UNIT(s)->id, s->n_connections); |
03e334a1 | 1787 | safe_close(cfd); |
6cf6bbc2 LP |
1788 | return; |
1789 | } | |
1790 | ||
1a710b43 MS |
1791 | r = socket_instantiate_service(s); |
1792 | if (r < 0) | |
b15bdda8 LP |
1793 | goto fail; |
1794 | ||
1a710b43 MS |
1795 | r = instance_from_socket(cfd, s->n_accepted, &instance); |
1796 | if (r < 0) { | |
1797 | if (r != -ENOTCONN) | |
1798 | goto fail; | |
1799 | ||
1800 | /* ENOTCONN is legitimate if TCP RST was received. | |
1801 | * This connection is over, but the socket unit lives on. */ | |
03e334a1 | 1802 | safe_close(cfd); |
1a710b43 MS |
1803 | return; |
1804 | } | |
4f2d528d | 1805 | |
1a710b43 MS |
1806 | prefix = unit_name_to_prefix(UNIT(s)->id); |
1807 | if (!prefix) { | |
4f2d528d LP |
1808 | r = -ENOMEM; |
1809 | goto fail; | |
1810 | } | |
1811 | ||
1812 | name = unit_name_build(prefix, instance, ".service"); | |
b6dbbe1c | 1813 | if (!name) { |
4f2d528d | 1814 | r = -ENOMEM; |
b6dbbe1c LP |
1815 | goto fail; |
1816 | } | |
4f2d528d | 1817 | |
1a710b43 | 1818 | r = unit_add_name(UNIT_DEREF(s->service), name); |
e55001eb | 1819 | if (r < 0) |
4f2d528d | 1820 | goto fail; |
b15bdda8 | 1821 | |
57020a3a LP |
1822 | service = SERVICE(UNIT_DEREF(s->service)); |
1823 | unit_ref_unset(&s->service); | |
b15bdda8 | 1824 | s->n_accepted ++; |
4f2d528d | 1825 | |
1124fe6f | 1826 | UNIT(service)->no_gc = false; |
6c073082 | 1827 | |
b15bdda8 | 1828 | unit_choose_id(UNIT(service), name); |
b15bdda8 | 1829 | |
16115b0a | 1830 | r = service_set_socket_fd(service, cfd, s, s->selinux_context_from_net); |
1a710b43 | 1831 | if (r < 0) |
4f2d528d LP |
1832 | goto fail; |
1833 | ||
1834 | cfd = -1; | |
6cf6bbc2 LP |
1835 | s->n_connections ++; |
1836 | ||
1a710b43 MS |
1837 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL); |
1838 | if (r < 0) | |
4f2d528d | 1839 | goto fail; |
c4e2ceae LP |
1840 | |
1841 | /* Notify clients about changed counters */ | |
1842 | unit_add_to_dbus_queue(UNIT(s)); | |
4f2d528d | 1843 | } |
034c6ed7 | 1844 | |
034c6ed7 LP |
1845 | return; |
1846 | ||
1847 | fail: | |
e821075a LP |
1848 | log_warning_unit(UNIT(s)->id, "%s failed to queue service startup job (Maybe the service file is missing or not a %s unit?): %s", |
1849 | UNIT(s)->id, cfd >= 0 ? "template" : "non-template", | |
718db961 | 1850 | bus_error_message(&error, r)); |
e821075a | 1851 | |
60089004 | 1852 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
03e334a1 | 1853 | safe_close(cfd); |
034c6ed7 LP |
1854 | } |
1855 | ||
cfc4eb4c | 1856 | static void socket_run_next(Socket *s) { |
034c6ed7 LP |
1857 | int r; |
1858 | ||
1859 | assert(s); | |
1860 | assert(s->control_command); | |
1861 | assert(s->control_command->command_next); | |
1862 | ||
5e94833f LP |
1863 | socket_unwatch_control_pid(s); |
1864 | ||
034c6ed7 LP |
1865 | s->control_command = s->control_command->command_next; |
1866 | ||
e821075a LP |
1867 | r = socket_spawn(s, s->control_command, &s->control_pid); |
1868 | if (r < 0) | |
034c6ed7 LP |
1869 | goto fail; |
1870 | ||
1871 | return; | |
1872 | ||
1873 | fail: | |
e821075a | 1874 | log_warning_unit(UNIT(s)->id, "%s failed to run next task: %s", UNIT(s)->id, strerror(-r)); |
80876c20 LP |
1875 | |
1876 | if (s->state == SOCKET_START_POST) | |
cfc4eb4c | 1877 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1878 | else if (s->state == SOCKET_STOP_POST) |
cfc4eb4c | 1879 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1880 | else |
cfc4eb4c | 1881 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1882 | } |
1883 | ||
87f0e418 LP |
1884 | static int socket_start(Unit *u) { |
1885 | Socket *s = SOCKET(u); | |
83c60c9f LP |
1886 | |
1887 | assert(s); | |
1888 | ||
034c6ed7 LP |
1889 | /* We cannot fulfill this request right now, try again later |
1890 | * please! */ | |
3900e5fd LP |
1891 | if (IN_SET(s->state, |
1892 | SOCKET_STOP_PRE, | |
1893 | SOCKET_STOP_PRE_SIGKILL, | |
1894 | SOCKET_STOP_PRE_SIGTERM, | |
1895 | SOCKET_STOP_POST, | |
1896 | SOCKET_FINAL_SIGTERM, | |
1897 | SOCKET_FINAL_SIGKILL)) | |
034c6ed7 LP |
1898 | return -EAGAIN; |
1899 | ||
a4152e3f | 1900 | /* Already on it! */ |
3900e5fd LP |
1901 | if (IN_SET(s->state, |
1902 | SOCKET_START_PRE, | |
1903 | SOCKET_START_CHOWN, | |
1904 | SOCKET_START_POST)) | |
034c6ed7 | 1905 | return 0; |
83c60c9f | 1906 | |
034c6ed7 | 1907 | /* Cannot run this without the service being around */ |
9444b1f2 | 1908 | if (UNIT_ISSET(s->service)) { |
57020a3a LP |
1909 | Service *service; |
1910 | ||
1911 | service = SERVICE(UNIT_DEREF(s->service)); | |
1912 | ||
1124fe6f | 1913 | if (UNIT(service)->load_state != UNIT_LOADED) { |
e821075a | 1914 | log_error_unit(u->id, "Socket service %s not loaded, refusing.", UNIT(service)->id); |
4f2d528d | 1915 | return -ENOENT; |
4ac9236f | 1916 | } |
4f2d528d | 1917 | |
35b8ca3a | 1918 | /* If the service is already active we cannot start the |
4f2d528d | 1919 | * socket */ |
57020a3a LP |
1920 | if (service->state != SERVICE_DEAD && |
1921 | service->state != SERVICE_FAILED && | |
1922 | service->state != SERVICE_AUTO_RESTART) { | |
e821075a | 1923 | log_error_unit(u->id, "Socket service %s already active, refusing.", UNIT(service)->id); |
4f2d528d | 1924 | return -EBUSY; |
4ac9236f | 1925 | } |
4f2d528d | 1926 | } |
e537352b | 1927 | |
fdf20a31 | 1928 | assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED); |
83c60c9f | 1929 | |
cfc4eb4c | 1930 | s->result = SOCKET_SUCCESS; |
034c6ed7 | 1931 | socket_enter_start_pre(s); |
e821075a | 1932 | |
034c6ed7 LP |
1933 | return 0; |
1934 | } | |
83c60c9f | 1935 | |
87f0e418 LP |
1936 | static int socket_stop(Unit *u) { |
1937 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
1938 | |
1939 | assert(s); | |
1940 | ||
e537352b | 1941 | /* Already on it */ |
3900e5fd LP |
1942 | if (IN_SET(s->state, |
1943 | SOCKET_STOP_PRE, | |
1944 | SOCKET_STOP_PRE_SIGTERM, | |
1945 | SOCKET_STOP_PRE_SIGKILL, | |
1946 | SOCKET_STOP_POST, | |
1947 | SOCKET_FINAL_SIGTERM, | |
1948 | SOCKET_FINAL_SIGKILL)) | |
e537352b LP |
1949 | return 0; |
1950 | ||
3f6c78dc LP |
1951 | /* If there's already something running we go directly into |
1952 | * kill mode. */ | |
3900e5fd LP |
1953 | if (IN_SET(s->state, |
1954 | SOCKET_START_PRE, | |
1955 | SOCKET_START_CHOWN, | |
1956 | SOCKET_START_POST)) { | |
cfc4eb4c | 1957 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_SUCCESS); |
3f6c78dc LP |
1958 | return -EAGAIN; |
1959 | } | |
1960 | ||
034c6ed7 | 1961 | assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING); |
83c60c9f | 1962 | |
cfc4eb4c | 1963 | socket_enter_stop_pre(s, SOCKET_SUCCESS); |
542563ba LP |
1964 | return 0; |
1965 | } | |
1966 | ||
a16e1123 LP |
1967 | static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { |
1968 | Socket *s = SOCKET(u); | |
1969 | SocketPort *p; | |
1970 | int r; | |
1971 | ||
1972 | assert(u); | |
1973 | assert(f); | |
1974 | assert(fds); | |
1975 | ||
1976 | unit_serialize_item(u, f, "state", socket_state_to_string(s->state)); | |
cfc4eb4c | 1977 | unit_serialize_item(u, f, "result", socket_result_to_string(s->result)); |
a16e1123 LP |
1978 | unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted); |
1979 | ||
1980 | if (s->control_pid > 0) | |
de0671ee | 1981 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 LP |
1982 | |
1983 | if (s->control_command_id >= 0) | |
1984 | unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id)); | |
1985 | ||
1986 | LIST_FOREACH(port, p, s->ports) { | |
1987 | int copy; | |
1988 | ||
1989 | if (p->fd < 0) | |
1990 | continue; | |
1991 | ||
613b411c LP |
1992 | copy = fdset_put_dup(fds, p->fd); |
1993 | if (copy < 0) | |
a16e1123 LP |
1994 | return copy; |
1995 | ||
1996 | if (p->type == SOCKET_SOCKET) { | |
613b411c | 1997 | _cleanup_free_ char *t = NULL; |
a16e1123 | 1998 | |
ee092817 LP |
1999 | r = socket_address_print(&p->address, &t); |
2000 | if (r < 0) | |
a16e1123 LP |
2001 | return r; |
2002 | ||
7a22745a LP |
2003 | if (socket_address_family(&p->address) == AF_NETLINK) |
2004 | unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t); | |
2005 | else | |
2006 | unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t); | |
613b411c | 2007 | |
b0a3f2bc LP |
2008 | } else if (p->type == SOCKET_SPECIAL) |
2009 | unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path); | |
ee092817 LP |
2010 | else if (p->type == SOCKET_MQUEUE) |
2011 | unit_serialize_item_format(u, f, "mqueue", "%i %s", copy, p->path); | |
b0a3f2bc | 2012 | else { |
a16e1123 LP |
2013 | assert(p->type == SOCKET_FIFO); |
2014 | unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path); | |
2015 | } | |
2016 | } | |
2017 | ||
2018 | return 0; | |
2019 | } | |
2020 | ||
2021 | static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
2022 | Socket *s = SOCKET(u); | |
a16e1123 LP |
2023 | |
2024 | assert(u); | |
2025 | assert(key); | |
2026 | assert(value); | |
a16e1123 LP |
2027 | |
2028 | if (streq(key, "state")) { | |
2029 | SocketState state; | |
2030 | ||
ee092817 LP |
2031 | state = socket_state_from_string(value); |
2032 | if (state < 0) | |
e821075a | 2033 | log_debug_unit(u->id, "Failed to parse state value %s", value); |
a16e1123 LP |
2034 | else |
2035 | s->deserialized_state = state; | |
cfc4eb4c LP |
2036 | } else if (streq(key, "result")) { |
2037 | SocketResult f; | |
a16e1123 | 2038 | |
cfc4eb4c LP |
2039 | f = socket_result_from_string(value); |
2040 | if (f < 0) | |
e821075a | 2041 | log_debug_unit(u->id, "Failed to parse result value %s", value); |
cfc4eb4c LP |
2042 | else if (f != SOCKET_SUCCESS) |
2043 | s->result = f; | |
a16e1123 LP |
2044 | |
2045 | } else if (streq(key, "n-accepted")) { | |
2046 | unsigned k; | |
2047 | ||
e364ad06 | 2048 | if (safe_atou(value, &k) < 0) |
e821075a | 2049 | log_debug_unit(u->id, "Failed to parse n-accepted value %s", value); |
a16e1123 LP |
2050 | else |
2051 | s->n_accepted += k; | |
2052 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 2053 | pid_t pid; |
a16e1123 | 2054 | |
e364ad06 | 2055 | if (parse_pid(value, &pid) < 0) |
e821075a | 2056 | log_debug_unit(u->id, "Failed to parse control-pid value %s", value); |
a16e1123 | 2057 | else |
5925dd3c | 2058 | s->control_pid = pid; |
a16e1123 LP |
2059 | } else if (streq(key, "control-command")) { |
2060 | SocketExecCommand id; | |
2061 | ||
66870f90 ZJS |
2062 | id = socket_exec_command_from_string(value); |
2063 | if (id < 0) | |
e821075a | 2064 | log_debug_unit(u->id, "Failed to parse exec-command value %s", value); |
a16e1123 LP |
2065 | else { |
2066 | s->control_command_id = id; | |
2067 | s->control_command = s->exec_command[id]; | |
2068 | } | |
2069 | } else if (streq(key, "fifo")) { | |
2070 | int fd, skip = 0; | |
2071 | SocketPort *p; | |
2072 | ||
2073 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
e821075a | 2074 | log_debug_unit(u->id, "Failed to parse fifo value %s", value); |
a16e1123 LP |
2075 | else { |
2076 | ||
2077 | LIST_FOREACH(port, p, s->ports) | |
b0a3f2bc LP |
2078 | if (p->type == SOCKET_FIFO && |
2079 | streq_ptr(p->path, value+skip)) | |
2080 | break; | |
2081 | ||
2082 | if (p) { | |
03e334a1 | 2083 | safe_close(p->fd); |
b0a3f2bc LP |
2084 | p->fd = fdset_remove(fds, fd); |
2085 | } | |
2086 | } | |
2087 | ||
2088 | } else if (streq(key, "special")) { | |
2089 | int fd, skip = 0; | |
2090 | SocketPort *p; | |
2091 | ||
2092 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
e821075a | 2093 | log_debug_unit(u->id, "Failed to parse special value %s", value); |
b0a3f2bc LP |
2094 | else { |
2095 | ||
2096 | LIST_FOREACH(port, p, s->ports) | |
2097 | if (p->type == SOCKET_SPECIAL && | |
2098 | streq_ptr(p->path, value+skip)) | |
a16e1123 LP |
2099 | break; |
2100 | ||
2101 | if (p) { | |
03e334a1 | 2102 | safe_close(p->fd); |
a16e1123 LP |
2103 | p->fd = fdset_remove(fds, fd); |
2104 | } | |
2105 | } | |
2106 | ||
ee092817 LP |
2107 | } else if (streq(key, "mqueue")) { |
2108 | int fd, skip = 0; | |
2109 | SocketPort *p; | |
2110 | ||
2111 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
e821075a | 2112 | log_debug_unit(u->id, "Failed to parse mqueue value %s", value); |
ee092817 LP |
2113 | else { |
2114 | ||
2115 | LIST_FOREACH(port, p, s->ports) | |
2116 | if (p->type == SOCKET_MQUEUE && | |
2117 | streq_ptr(p->path, value+skip)) | |
2118 | break; | |
2119 | ||
2120 | if (p) { | |
03e334a1 | 2121 | safe_close(p->fd); |
ee092817 LP |
2122 | p->fd = fdset_remove(fds, fd); |
2123 | } | |
2124 | } | |
2125 | ||
a16e1123 | 2126 | } else if (streq(key, "socket")) { |
27ca8d7a | 2127 | int fd, type, skip = 0; |
a16e1123 LP |
2128 | SocketPort *p; |
2129 | ||
27ca8d7a | 2130 | if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd)) |
e821075a | 2131 | log_debug_unit(u->id, "Failed to parse socket value %s", value); |
a16e1123 LP |
2132 | else { |
2133 | ||
2134 | LIST_FOREACH(port, p, s->ports) | |
27ca8d7a | 2135 | if (socket_address_is(&p->address, value+skip, type)) |
a16e1123 LP |
2136 | break; |
2137 | ||
2138 | if (p) { | |
03e334a1 | 2139 | safe_close(p->fd); |
a16e1123 LP |
2140 | p->fd = fdset_remove(fds, fd); |
2141 | } | |
2142 | } | |
2143 | ||
7a22745a LP |
2144 | } else if (streq(key, "netlink")) { |
2145 | int fd, skip = 0; | |
2146 | SocketPort *p; | |
2147 | ||
2148 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
e821075a | 2149 | log_debug_unit(u->id, "Failed to parse socket value %s", value); |
7a22745a LP |
2150 | else { |
2151 | ||
2152 | LIST_FOREACH(port, p, s->ports) | |
2153 | if (socket_address_is_netlink(&p->address, value+skip)) | |
2154 | break; | |
2155 | ||
2156 | if (p) { | |
03e334a1 | 2157 | safe_close(p->fd); |
7a22745a LP |
2158 | p->fd = fdset_remove(fds, fd); |
2159 | } | |
2160 | } | |
a16e1123 | 2161 | } else |
e821075a | 2162 | log_debug_unit(UNIT(s)->id, "Unknown serialization key '%s'", key); |
a16e1123 LP |
2163 | |
2164 | return 0; | |
2165 | } | |
2166 | ||
01e10de3 LP |
2167 | static int socket_distribute_fds(Unit *u, FDSet *fds) { |
2168 | Socket *s = SOCKET(u); | |
2169 | SocketPort *p; | |
2170 | ||
2171 | assert(u); | |
2172 | ||
2173 | LIST_FOREACH(port, p, s->ports) { | |
2174 | Iterator i; | |
2175 | int fd; | |
2176 | ||
2177 | if (p->type != SOCKET_SOCKET) | |
2178 | continue; | |
2179 | ||
2180 | if (p->fd >= 0) | |
2181 | continue; | |
2182 | ||
2183 | FDSET_FOREACH(fd, fds, i) { | |
2184 | if (socket_address_matches_fd(&p->address, fd)) { | |
2185 | p->fd = fdset_remove(fds, fd); | |
2186 | s->deserialized_state = SOCKET_LISTENING; | |
2187 | break; | |
2188 | } | |
2189 | } | |
2190 | } | |
2191 | ||
2192 | return 0; | |
2193 | } | |
2194 | ||
44a6b1b6 | 2195 | _pure_ static UnitActiveState socket_active_state(Unit *u) { |
87f0e418 | 2196 | assert(u); |
5cb5a6ff | 2197 | |
acbb0225 | 2198 | return state_translation_table[SOCKET(u)->state]; |
5cb5a6ff LP |
2199 | } |
2200 | ||
44a6b1b6 | 2201 | _pure_ static const char *socket_sub_state_to_string(Unit *u) { |
10a94420 LP |
2202 | assert(u); |
2203 | ||
a16e1123 | 2204 | return socket_state_to_string(SOCKET(u)->state); |
10a94420 LP |
2205 | } |
2206 | ||
67419600 OS |
2207 | const char* socket_port_type_to_string(SocketPort *p) { |
2208 | ||
2209 | assert(p); | |
2210 | ||
2211 | switch (p->type) { | |
718db961 LP |
2212 | |
2213 | case SOCKET_SOCKET: | |
2214 | ||
2215 | switch (p->address.type) { | |
2216 | ||
2217 | case SOCK_STREAM: | |
2218 | return "Stream"; | |
2219 | ||
2220 | case SOCK_DGRAM: | |
2221 | return "Datagram"; | |
2222 | ||
2223 | case SOCK_SEQPACKET: | |
2224 | return "SequentialPacket"; | |
2225 | ||
2226 | case SOCK_RAW: | |
2227 | if (socket_address_family(&p->address) == AF_NETLINK) | |
2228 | return "Netlink"; | |
2229 | ||
2230 | default: | |
2231 | return NULL; | |
2232 | } | |
2233 | ||
2234 | case SOCKET_SPECIAL: | |
2235 | return "Special"; | |
2236 | ||
2237 | case SOCKET_MQUEUE: | |
2238 | return "MessageQueue"; | |
2239 | ||
2240 | case SOCKET_FIFO: | |
2241 | return "FIFO"; | |
2242 | ||
2243 | default: | |
2244 | return NULL; | |
67419600 OS |
2245 | } |
2246 | } | |
2247 | ||
44a6b1b6 | 2248 | _pure_ static bool socket_check_gc(Unit *u) { |
6cf6bbc2 LP |
2249 | Socket *s = SOCKET(u); |
2250 | ||
2251 | assert(u); | |
2252 | ||
2253 | return s->n_connections > 0; | |
2254 | } | |
2255 | ||
718db961 LP |
2256 | static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2257 | SocketPort *p = userdata; | |
4f2d528d | 2258 | int cfd = -1; |
9152c765 | 2259 | |
718db961 | 2260 | assert(p); |
8d567588 | 2261 | assert(fd >= 0); |
9152c765 | 2262 | |
718db961 LP |
2263 | if (p->socket->state != SOCKET_LISTENING) |
2264 | return 0; | |
871d7de4 | 2265 | |
718db961 | 2266 | log_debug_unit(UNIT(p->socket)->id, "Incoming traffic on %s", UNIT(p->socket)->id); |
9152c765 | 2267 | |
718db961 | 2268 | if (revents != EPOLLIN) { |
641e01dc | 2269 | |
718db961 | 2270 | if (revents & EPOLLHUP) |
e821075a | 2271 | log_error_unit(UNIT(p->socket)->id, "%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", |
718db961 | 2272 | UNIT(p->socket)->id); |
641e01dc | 2273 | else |
e821075a | 2274 | log_error_unit(UNIT(p->socket)->id, "%s: Got unexpected poll event (0x%x) on socket.", |
718db961 | 2275 | UNIT(p->socket)->id, revents); |
641e01dc | 2276 | |
8d567588 | 2277 | goto fail; |
4f2d528d LP |
2278 | } |
2279 | ||
718db961 LP |
2280 | if (p->socket->accept && |
2281 | p->type == SOCKET_SOCKET && | |
2282 | socket_address_can_accept(&p->address)) { | |
2283 | ||
4f2d528d LP |
2284 | for (;;) { |
2285 | ||
b14eda96 LP |
2286 | cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK); |
2287 | if (cfd < 0) { | |
4f2d528d LP |
2288 | |
2289 | if (errno == EINTR) | |
2290 | continue; | |
2291 | ||
718db961 | 2292 | log_error_unit(UNIT(p->socket)->id, |
66870f90 | 2293 | "Failed to accept socket: %m"); |
8d567588 | 2294 | goto fail; |
4f2d528d LP |
2295 | } |
2296 | ||
2297 | break; | |
2298 | } | |
4fd5948e | 2299 | |
718db961 | 2300 | socket_apply_socket_options(p->socket, cfd); |
4f2d528d | 2301 | } |
9152c765 | 2302 | |
718db961 LP |
2303 | socket_enter_running(p->socket, cfd); |
2304 | return 0; | |
8d567588 LP |
2305 | |
2306 | fail: | |
718db961 LP |
2307 | socket_enter_stop_pre(p->socket, SOCKET_FAILURE_RESOURCES); |
2308 | return 0; | |
9152c765 LP |
2309 | } |
2310 | ||
87f0e418 LP |
2311 | static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
2312 | Socket *s = SOCKET(u); | |
cfc4eb4c | 2313 | SocketResult f; |
5cb5a6ff LP |
2314 | |
2315 | assert(s); | |
034c6ed7 | 2316 | assert(pid >= 0); |
5cb5a6ff | 2317 | |
8c47c732 LP |
2318 | if (pid != s->control_pid) |
2319 | return; | |
542563ba | 2320 | |
034c6ed7 LP |
2321 | s->control_pid = 0; |
2322 | ||
96342de6 | 2323 | if (is_clean_exit(code, status, NULL)) |
cfc4eb4c LP |
2324 | f = SOCKET_SUCCESS; |
2325 | else if (code == CLD_EXITED) | |
2326 | f = SOCKET_FAILURE_EXIT_CODE; | |
2327 | else if (code == CLD_KILLED) | |
2328 | f = SOCKET_FAILURE_SIGNAL; | |
2329 | else if (code == CLD_DUMPED) | |
2330 | f = SOCKET_FAILURE_CORE_DUMP; | |
2331 | else | |
a4152e3f | 2332 | assert_not_reached("Unknown sigchld code"); |
8c47c732 | 2333 | |
b708e7ce | 2334 | if (s->control_command) { |
6ea832a2 | 2335 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 2336 | |
b708e7ce | 2337 | if (s->control_command->ignore) |
cfc4eb4c | 2338 | f = SOCKET_SUCCESS; |
b708e7ce LP |
2339 | } |
2340 | ||
66870f90 ZJS |
2341 | log_full_unit(f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE, |
2342 | u->id, | |
2343 | "%s control process exited, code=%s status=%i", | |
2344 | u->id, sigchld_code_to_string(code), status); | |
034c6ed7 | 2345 | |
cfc4eb4c LP |
2346 | if (f != SOCKET_SUCCESS) |
2347 | s->result = f; | |
2348 | ||
2349 | if (s->control_command && | |
2350 | s->control_command->command_next && | |
2351 | f == SOCKET_SUCCESS) { | |
2352 | ||
66870f90 ZJS |
2353 | log_debug_unit(u->id, |
2354 | "%s running next command for state %s", | |
2355 | u->id, socket_state_to_string(s->state)); | |
cfc4eb4c | 2356 | socket_run_next(s); |
acbb0225 | 2357 | } else { |
a16e1123 LP |
2358 | s->control_command = NULL; |
2359 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
2360 | ||
034c6ed7 LP |
2361 | /* No further commands for this step, so let's figure |
2362 | * out what to do next */ | |
5cb5a6ff | 2363 | |
66870f90 ZJS |
2364 | log_debug_unit(u->id, |
2365 | "%s got final SIGCHLD for state %s", | |
2366 | u->id, socket_state_to_string(s->state)); | |
acbb0225 | 2367 | |
034c6ed7 LP |
2368 | switch (s->state) { |
2369 | ||
2370 | case SOCKET_START_PRE: | |
cfc4eb4c | 2371 | if (f == SOCKET_SUCCESS) |
3900e5fd | 2372 | socket_enter_start_chown(s); |
034c6ed7 | 2373 | else |
cfc4eb4c | 2374 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, f); |
034c6ed7 LP |
2375 | break; |
2376 | ||
3900e5fd LP |
2377 | case SOCKET_START_CHOWN: |
2378 | if (f == SOCKET_SUCCESS) | |
2379 | socket_enter_start_post(s); | |
2380 | else | |
2381 | socket_enter_stop_pre(s, f); | |
2382 | break; | |
2383 | ||
034c6ed7 | 2384 | case SOCKET_START_POST: |
cfc4eb4c | 2385 | if (f == SOCKET_SUCCESS) |
e9af15c3 | 2386 | socket_enter_listening(s); |
034c6ed7 | 2387 | else |
cfc4eb4c | 2388 | socket_enter_stop_pre(s, f); |
034c6ed7 LP |
2389 | break; |
2390 | ||
2391 | case SOCKET_STOP_PRE: | |
2392 | case SOCKET_STOP_PRE_SIGTERM: | |
2393 | case SOCKET_STOP_PRE_SIGKILL: | |
cfc4eb4c | 2394 | socket_enter_stop_post(s, f); |
034c6ed7 LP |
2395 | break; |
2396 | ||
2397 | case SOCKET_STOP_POST: | |
80876c20 LP |
2398 | case SOCKET_FINAL_SIGTERM: |
2399 | case SOCKET_FINAL_SIGKILL: | |
cfc4eb4c | 2400 | socket_enter_dead(s, f); |
034c6ed7 LP |
2401 | break; |
2402 | ||
2403 | default: | |
2404 | assert_not_reached("Uh, control process died at wrong time."); | |
2405 | } | |
2406 | } | |
c4e2ceae LP |
2407 | |
2408 | /* Notify clients about changed exit status */ | |
2409 | unit_add_to_dbus_queue(u); | |
034c6ed7 | 2410 | } |
5cb5a6ff | 2411 | |
718db961 LP |
2412 | static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
2413 | Socket *s = SOCKET(userdata); | |
5cb5a6ff | 2414 | |
034c6ed7 | 2415 | assert(s); |
718db961 | 2416 | assert(s->timer_event_source == source); |
034c6ed7 LP |
2417 | |
2418 | switch (s->state) { | |
2419 | ||
2420 | case SOCKET_START_PRE: | |
3900e5fd | 2421 | log_warning_unit(UNIT(s)->id, "%s starting timed out. Terminating.", UNIT(s)->id); |
cfc4eb4c | 2422 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
da19d5c1 | 2423 | break; |
80876c20 | 2424 | |
3900e5fd | 2425 | case SOCKET_START_CHOWN: |
034c6ed7 | 2426 | case SOCKET_START_POST: |
3900e5fd | 2427 | log_warning_unit(UNIT(s)->id, "%s starting timed out. Stopping.", UNIT(s)->id); |
cfc4eb4c | 2428 | socket_enter_stop_pre(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2429 | break; |
2430 | ||
2431 | case SOCKET_STOP_PRE: | |
3900e5fd | 2432 | log_warning_unit(UNIT(s)->id, "%s stopping timed out. Terminating.", UNIT(s)->id); |
cfc4eb4c | 2433 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2434 | break; |
2435 | ||
2436 | case SOCKET_STOP_PRE_SIGTERM: | |
4819ff03 | 2437 | if (s->kill_context.send_sigkill) { |
3900e5fd | 2438 | log_warning_unit(UNIT(s)->id, "%s stopping timed out. Killing.", UNIT(s)->id); |
cfc4eb4c | 2439 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2440 | } else { |
3900e5fd | 2441 | log_warning_unit(UNIT(s)->id, "%s stopping timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id); |
cfc4eb4c | 2442 | socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2443 | } |
034c6ed7 LP |
2444 | break; |
2445 | ||
2446 | case SOCKET_STOP_PRE_SIGKILL: | |
3900e5fd | 2447 | log_warning_unit(UNIT(s)->id, "%s still around after SIGKILL. Ignoring.", UNIT(s)->id); |
cfc4eb4c | 2448 | socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2449 | break; |
2450 | ||
2451 | case SOCKET_STOP_POST: | |
3900e5fd | 2452 | log_warning_unit(UNIT(s)->id, "%s stopping timed out (2). Terminating.", UNIT(s)->id); |
cfc4eb4c | 2453 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2454 | break; |
2455 | ||
80876c20 | 2456 | case SOCKET_FINAL_SIGTERM: |
4819ff03 | 2457 | if (s->kill_context.send_sigkill) { |
3900e5fd | 2458 | log_warning_unit(UNIT(s)->id, "%s stopping timed out (2). Killing.", UNIT(s)->id); |
cfc4eb4c | 2459 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2460 | } else { |
3900e5fd | 2461 | log_warning_unit(UNIT(s)->id, "%s stopping timed out (2). Skipping SIGKILL. Ignoring.", UNIT(s)->id); |
cfc4eb4c | 2462 | socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2463 | } |
034c6ed7 LP |
2464 | break; |
2465 | ||
80876c20 | 2466 | case SOCKET_FINAL_SIGKILL: |
3900e5fd | 2467 | log_warning_unit(UNIT(s)->id, "%s still around after SIGKILL (2). Entering failed mode.", UNIT(s)->id); |
cfc4eb4c | 2468 | socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2469 | break; |
2470 | ||
2471 | default: | |
2472 | assert_not_reached("Timeout at wrong time."); | |
2473 | } | |
718db961 LP |
2474 | |
2475 | return 0; | |
5cb5a6ff LP |
2476 | } |
2477 | ||
44d8db9e LP |
2478 | int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { |
2479 | int *rfds; | |
2480 | unsigned rn_fds, k; | |
2481 | SocketPort *p; | |
2482 | ||
2483 | assert(s); | |
2484 | assert(fds); | |
2485 | assert(n_fds); | |
2486 | ||
2487 | /* Called from the service code for requesting our fds */ | |
2488 | ||
2489 | rn_fds = 0; | |
2490 | LIST_FOREACH(port, p, s->ports) | |
2491 | if (p->fd >= 0) | |
2492 | rn_fds++; | |
2493 | ||
de3756ab LP |
2494 | if (rn_fds <= 0) { |
2495 | *fds = NULL; | |
2496 | *n_fds = 0; | |
2497 | return 0; | |
2498 | } | |
2499 | ||
e364ad06 | 2500 | if (!(rfds = new(int, rn_fds))) |
44d8db9e LP |
2501 | return -ENOMEM; |
2502 | ||
2503 | k = 0; | |
2504 | LIST_FOREACH(port, p, s->ports) | |
2505 | if (p->fd >= 0) | |
2506 | rfds[k++] = p->fd; | |
2507 | ||
2508 | assert(k == rn_fds); | |
2509 | ||
2510 | *fds = rfds; | |
2511 | *n_fds = rn_fds; | |
2512 | ||
2513 | return 0; | |
2514 | } | |
2515 | ||
e821075a LP |
2516 | static void socket_reset_failed(Unit *u) { |
2517 | Socket *s = SOCKET(u); | |
2518 | ||
2519 | assert(s); | |
2520 | ||
2521 | if (s->state == SOCKET_FAILED) | |
2522 | socket_set_state(s, SOCKET_DEAD); | |
2523 | ||
2524 | s->result = SOCKET_SUCCESS; | |
2525 | } | |
2526 | ||
d137a488 | 2527 | static void socket_notify_service_dead(Socket *s, bool failed_permanent) { |
ceee3d82 LP |
2528 | assert(s); |
2529 | ||
6cf6bbc2 LP |
2530 | /* The service is dead. Dang! |
2531 | * | |
2532 | * This is strictly for one-instance-for-all-connections | |
2533 | * services. */ | |
ceee3d82 LP |
2534 | |
2535 | if (s->state == SOCKET_RUNNING) { | |
e821075a | 2536 | log_debug_unit(UNIT(s)->id, "%s got notified about service death (failed permanently: %s)", UNIT(s)->id, yes_no(failed_permanent)); |
6bda96a0 LP |
2537 | if (failed_permanent) |
2538 | socket_enter_stop_pre(s, SOCKET_FAILURE_SERVICE_FAILED_PERMANENT); | |
c2f34808 MS |
2539 | else |
2540 | socket_enter_listening(s); | |
ceee3d82 LP |
2541 | } |
2542 | } | |
2543 | ||
6cf6bbc2 LP |
2544 | void socket_connection_unref(Socket *s) { |
2545 | assert(s); | |
2546 | ||
2547 | /* The service is dead. Yay! | |
2548 | * | |
35b8ca3a | 2549 | * This is strictly for one-instance-per-connection |
6cf6bbc2 LP |
2550 | * services. */ |
2551 | ||
2552 | assert(s->n_connections > 0); | |
2553 | s->n_connections--; | |
2554 | ||
e821075a | 2555 | log_debug_unit(UNIT(s)->id, "%s: One connection closed, %u left.", UNIT(s)->id, s->n_connections); |
5632e374 LP |
2556 | } |
2557 | ||
d137a488 UTL |
2558 | static void socket_trigger_notify(Unit *u, Unit *other) { |
2559 | Socket *s = SOCKET(u); | |
e821075a | 2560 | Service *se; |
d137a488 UTL |
2561 | |
2562 | assert(u); | |
2563 | assert(other); | |
2564 | ||
2565 | /* Don't propagate state changes from the service if we are | |
2566 | already down or accepting connections */ | |
2567 | if ((s->state != SOCKET_RUNNING && | |
2568 | s->state != SOCKET_LISTENING) || | |
2569 | s->accept) | |
2570 | return; | |
2571 | ||
2572 | if (other->load_state != UNIT_LOADED || | |
2573 | other->type != UNIT_SERVICE) | |
2574 | return; | |
2575 | ||
e821075a LP |
2576 | se = SERVICE(other); |
2577 | ||
d137a488 UTL |
2578 | if (se->state == SERVICE_FAILED) |
2579 | socket_notify_service_dead(s, se->result == SERVICE_FAILURE_START_LIMIT); | |
2580 | ||
2581 | if (se->state == SERVICE_DEAD || | |
2582 | se->state == SERVICE_STOP || | |
2583 | se->state == SERVICE_STOP_SIGTERM || | |
2584 | se->state == SERVICE_STOP_SIGKILL || | |
2585 | se->state == SERVICE_STOP_POST || | |
2586 | se->state == SERVICE_FINAL_SIGTERM || | |
2587 | se->state == SERVICE_FINAL_SIGKILL || | |
2588 | se->state == SERVICE_AUTO_RESTART) | |
2589 | socket_notify_service_dead(s, false); | |
2590 | ||
2591 | if (se->state == SERVICE_RUNNING) | |
2592 | socket_set_state(s, SOCKET_RUNNING); | |
2593 | } | |
2594 | ||
718db961 | 2595 | static int socket_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 2596 | return unit_kill_common(u, who, signo, -1, SOCKET(u)->control_pid, error); |
8a0867d6 LP |
2597 | } |
2598 | ||
68db7a3b ZJS |
2599 | static int socket_get_timeout(Unit *u, uint64_t *timeout) { |
2600 | Socket *s = SOCKET(u); | |
2601 | int r; | |
2602 | ||
2603 | if (!s->timer_event_source) | |
2604 | return 0; | |
2605 | ||
2606 | r = sd_event_source_get_time(s->timer_event_source, timeout); | |
2607 | if (r < 0) | |
2608 | return r; | |
2609 | ||
2610 | return 1; | |
2611 | } | |
2612 | ||
a16e1123 LP |
2613 | static const char* const socket_state_table[_SOCKET_STATE_MAX] = { |
2614 | [SOCKET_DEAD] = "dead", | |
2615 | [SOCKET_START_PRE] = "start-pre", | |
3900e5fd | 2616 | [SOCKET_START_CHOWN] = "start-chown", |
a16e1123 LP |
2617 | [SOCKET_START_POST] = "start-post", |
2618 | [SOCKET_LISTENING] = "listening", | |
2619 | [SOCKET_RUNNING] = "running", | |
2620 | [SOCKET_STOP_PRE] = "stop-pre", | |
2621 | [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm", | |
2622 | [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill", | |
2623 | [SOCKET_STOP_POST] = "stop-post", | |
2624 | [SOCKET_FINAL_SIGTERM] = "final-sigterm", | |
2625 | [SOCKET_FINAL_SIGKILL] = "final-sigkill", | |
fdf20a31 | 2626 | [SOCKET_FAILED] = "failed" |
a16e1123 LP |
2627 | }; |
2628 | ||
2629 | DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState); | |
2630 | ||
2631 | static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = { | |
2632 | [SOCKET_EXEC_START_PRE] = "StartPre", | |
3900e5fd | 2633 | [SOCKET_EXEC_START_CHOWN] = "StartChown", |
a16e1123 LP |
2634 | [SOCKET_EXEC_START_POST] = "StartPost", |
2635 | [SOCKET_EXEC_STOP_PRE] = "StopPre", | |
2636 | [SOCKET_EXEC_STOP_POST] = "StopPost" | |
2637 | }; | |
2638 | ||
2639 | DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand); | |
2640 | ||
cfc4eb4c LP |
2641 | static const char* const socket_result_table[_SOCKET_RESULT_MAX] = { |
2642 | [SOCKET_SUCCESS] = "success", | |
2643 | [SOCKET_FAILURE_RESOURCES] = "resources", | |
2644 | [SOCKET_FAILURE_TIMEOUT] = "timeout", | |
2645 | [SOCKET_FAILURE_EXIT_CODE] = "exit-code", | |
2646 | [SOCKET_FAILURE_SIGNAL] = "signal", | |
c2f34808 | 2647 | [SOCKET_FAILURE_CORE_DUMP] = "core-dump", |
6bda96a0 | 2648 | [SOCKET_FAILURE_SERVICE_FAILED_PERMANENT] = "service-failed-permanent" |
cfc4eb4c LP |
2649 | }; |
2650 | ||
2651 | DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult); | |
2652 | ||
87f0e418 | 2653 | const UnitVTable socket_vtable = { |
7d17cfbc | 2654 | .object_size = sizeof(Socket), |
718db961 LP |
2655 | .exec_context_offset = offsetof(Socket, exec_context), |
2656 | .cgroup_context_offset = offsetof(Socket, cgroup_context), | |
2657 | .kill_context_offset = offsetof(Socket, kill_context), | |
613b411c | 2658 | .exec_runtime_offset = offsetof(Socket, exec_runtime), |
3ef63c31 | 2659 | |
f975e971 LP |
2660 | .sections = |
2661 | "Unit\0" | |
2662 | "Socket\0" | |
2663 | "Install\0", | |
4ad49000 | 2664 | .private_section = "Socket", |
71645aca | 2665 | |
034c6ed7 LP |
2666 | .init = socket_init, |
2667 | .done = socket_done, | |
a16e1123 LP |
2668 | .load = socket_load, |
2669 | ||
2670 | .coldplug = socket_coldplug, | |
034c6ed7 | 2671 | |
5cb5a6ff LP |
2672 | .dump = socket_dump, |
2673 | ||
542563ba LP |
2674 | .start = socket_start, |
2675 | .stop = socket_stop, | |
5cb5a6ff | 2676 | |
718db961 LP |
2677 | .kill = socket_kill, |
2678 | ||
68db7a3b ZJS |
2679 | .get_timeout = socket_get_timeout, |
2680 | ||
a16e1123 LP |
2681 | .serialize = socket_serialize, |
2682 | .deserialize_item = socket_deserialize_item, | |
01e10de3 | 2683 | .distribute_fds = socket_distribute_fds, |
a16e1123 | 2684 | |
5cb5a6ff | 2685 | .active_state = socket_active_state, |
10a94420 | 2686 | .sub_state_to_string = socket_sub_state_to_string, |
5cb5a6ff | 2687 | |
6cf6bbc2 LP |
2688 | .check_gc = socket_check_gc, |
2689 | ||
034c6ed7 | 2690 | .sigchld_event = socket_sigchld_event, |
4139c1b2 | 2691 | |
d137a488 UTL |
2692 | .trigger_notify = socket_trigger_notify, |
2693 | ||
fdf20a31 | 2694 | .reset_failed = socket_reset_failed, |
5632e374 | 2695 | |
c4e2ceae | 2696 | .bus_interface = "org.freedesktop.systemd1.Socket", |
718db961 | 2697 | .bus_vtable = bus_socket_vtable, |
74c964d3 LP |
2698 | .bus_set_property = bus_socket_set_property, |
2699 | .bus_commit_properties = bus_socket_commit_properties, | |
c6918296 MS |
2700 | |
2701 | .status_message_formats = { | |
2702 | /*.starting_stopping = { | |
2703 | [0] = "Starting socket %s...", | |
2704 | [1] = "Stopping socket %s...", | |
2705 | },*/ | |
2706 | .finished_start_job = { | |
2707 | [JOB_DONE] = "Listening on %s.", | |
2708 | [JOB_FAILED] = "Failed to listen on %s.", | |
2709 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
2710 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
2711 | }, | |
2712 | .finished_stop_job = { | |
2713 | [JOB_DONE] = "Closed %s.", | |
2714 | [JOB_FAILED] = "Failed stopping %s.", | |
2715 | [JOB_TIMEOUT] = "Timed out stopping %s.", | |
2716 | }, | |
2717 | }, | |
5cb5a6ff | 2718 | }; |