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Commit | Line | Data |
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a7334b09 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
a7334b09 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
e8da24a6 | 20 | #include <arpa/inet.h> |
83c60c9f LP |
21 | #include <errno.h> |
22 | #include <fcntl.h> | |
916abb21 | 23 | #include <mqueue.h> |
e8da24a6 LP |
24 | #include <netinet/tcp.h> |
25 | #include <signal.h> | |
26 | #include <sys/epoll.h> | |
27 | #include <sys/stat.h> | |
28 | #include <unistd.h> | |
62bc4efc | 29 | #include <linux/sctp.h> |
83c60c9f | 30 | |
718db961 | 31 | #include "sd-event.h" |
b5efdb8a | 32 | #include "alloc-util.h" |
e8da24a6 LP |
33 | #include "bus-error.h" |
34 | #include "bus-util.h" | |
35 | #include "copy.h" | |
36 | #include "dbus-socket.h" | |
37 | #include "def.h" | |
38 | #include "exit-status.h" | |
3ffd4af2 | 39 | #include "fd-util.h" |
e8da24a6 LP |
40 | #include "formats-util.h" |
41 | #include "label.h" | |
83c60c9f | 42 | #include "log.h" |
e8da24a6 | 43 | #include "missing.h" |
49e942b2 | 44 | #include "mkdir.h" |
6bedfcbb | 45 | #include "parse-util.h" |
9eb977db | 46 | #include "path-util.h" |
7b3e062c | 47 | #include "process-util.h" |
d7b8eec7 | 48 | #include "selinux-util.h" |
24882e06 | 49 | #include "signal-util.h" |
e8da24a6 | 50 | #include "smack-util.h" |
24882e06 | 51 | #include "socket.h" |
e8da24a6 | 52 | #include "special.h" |
8b43440b | 53 | #include "string-table.h" |
07630cea | 54 | #include "string-util.h" |
e8da24a6 LP |
55 | #include "strv.h" |
56 | #include "unit-name.h" | |
57 | #include "unit-printf.h" | |
58 | #include "unit.h" | |
b1d4f8e1 | 59 | #include "user-util.h" |
83c60c9f | 60 | |
acbb0225 | 61 | static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { |
87f0e418 LP |
62 | [SOCKET_DEAD] = UNIT_INACTIVE, |
63 | [SOCKET_START_PRE] = UNIT_ACTIVATING, | |
3900e5fd | 64 | [SOCKET_START_CHOWN] = UNIT_ACTIVATING, |
87f0e418 LP |
65 | [SOCKET_START_POST] = UNIT_ACTIVATING, |
66 | [SOCKET_LISTENING] = UNIT_ACTIVE, | |
67 | [SOCKET_RUNNING] = UNIT_ACTIVE, | |
68 | [SOCKET_STOP_PRE] = UNIT_DEACTIVATING, | |
69 | [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING, | |
70 | [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING, | |
71 | [SOCKET_STOP_POST] = UNIT_DEACTIVATING, | |
80876c20 LP |
72 | [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING, |
73 | [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 74 | [SOCKET_FAILED] = UNIT_FAILED |
83c60c9f | 75 | }; |
5cb5a6ff | 76 | |
718db961 LP |
77 | static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); |
78 | static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); | |
79 | ||
a16e1123 LP |
80 | static void socket_init(Unit *u) { |
81 | Socket *s = SOCKET(u); | |
82 | ||
83 | assert(u); | |
ac155bb8 | 84 | assert(u->load_state == UNIT_STUB); |
a16e1123 | 85 | |
a16e1123 | 86 | s->backlog = SOMAXCONN; |
1f19a534 | 87 | s->timeout_usec = u->manager->default_timeout_start_usec; |
a16e1123 | 88 | s->directory_mode = 0755; |
9131f660 | 89 | s->socket_mode = 0666; |
a16e1123 | 90 | |
6cf6bbc2 LP |
91 | s->max_connections = 64; |
92 | ||
4fd5948e | 93 | s->priority = -1; |
4fd5948e LP |
94 | s->ip_tos = -1; |
95 | s->ip_ttl = -1; | |
4fd5948e | 96 | s->mark = -1; |
4fd5948e | 97 | |
ac155bb8 MS |
98 | s->exec_context.std_output = u->manager->default_std_output; |
99 | s->exec_context.std_error = u->manager->default_std_error; | |
085afe36 | 100 | |
a16e1123 | 101 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
8b26cdbd LP |
102 | |
103 | RATELIMIT_INIT(s->trigger_limit, 5*USEC_PER_SEC, 2500); | |
a16e1123 | 104 | } |
acbb0225 | 105 | |
5e94833f LP |
106 | static void socket_unwatch_control_pid(Socket *s) { |
107 | assert(s); | |
108 | ||
109 | if (s->control_pid <= 0) | |
110 | return; | |
111 | ||
112 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
113 | s->control_pid = 0; | |
114 | } | |
115 | ||
15087cdb | 116 | static void socket_cleanup_fd_list(SocketPort *p) { |
3ffd4af2 | 117 | assert(p); |
15087cdb | 118 | |
3ffd4af2 | 119 | close_many(p->auxiliary_fds, p->n_auxiliary_fds); |
15087cdb PS |
120 | p->auxiliary_fds = mfree(p->auxiliary_fds); |
121 | p->n_auxiliary_fds = 0; | |
122 | } | |
123 | ||
74051b9b | 124 | void socket_free_ports(Socket *s) { |
034c6ed7 LP |
125 | SocketPort *p; |
126 | ||
127 | assert(s); | |
128 | ||
129 | while ((p = s->ports)) { | |
71fda00f | 130 | LIST_REMOVE(port, s->ports, p); |
034c6ed7 | 131 | |
718db961 LP |
132 | sd_event_source_unref(p->event_source); |
133 | ||
15087cdb | 134 | socket_cleanup_fd_list(p); |
03e334a1 | 135 | safe_close(p->fd); |
034c6ed7 LP |
136 | free(p->path); |
137 | free(p); | |
138 | } | |
74051b9b LP |
139 | } |
140 | ||
141 | static void socket_done(Unit *u) { | |
142 | Socket *s = SOCKET(u); | |
143 | ||
144 | assert(s); | |
145 | ||
146 | socket_free_ports(s); | |
034c6ed7 | 147 | |
613b411c | 148 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e537352b | 149 | exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX); |
034c6ed7 LP |
150 | s->control_command = NULL; |
151 | ||
5e94833f | 152 | socket_unwatch_control_pid(s); |
034c6ed7 | 153 | |
57020a3a | 154 | unit_ref_unset(&s->service); |
034c6ed7 | 155 | |
a1e58e8e LP |
156 | s->tcp_congestion = mfree(s->tcp_congestion); |
157 | s->bind_to_device = mfree(s->bind_to_device); | |
acbb0225 | 158 | |
0a78712e DM |
159 | s->smack = mfree(s->smack); |
160 | s->smack_ip_in = mfree(s->smack_ip_in); | |
161 | s->smack_ip_out = mfree(s->smack_ip_out); | |
0eb59ccf | 162 | |
811ba7a0 LP |
163 | strv_free(s->symlinks); |
164 | ||
0a78712e DM |
165 | s->user = mfree(s->user); |
166 | s->group = mfree(s->group); | |
3900e5fd | 167 | |
a97b23d6 DM |
168 | s->fdname = mfree(s->fdname); |
169 | ||
718db961 LP |
170 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
171 | } | |
172 | ||
36c16a7c | 173 | static int socket_arm_timer(Socket *s, usec_t usec) { |
718db961 LP |
174 | int r; |
175 | ||
176 | assert(s); | |
177 | ||
718db961 | 178 | if (s->timer_event_source) { |
36c16a7c | 179 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
180 | if (r < 0) |
181 | return r; | |
182 | ||
183 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
184 | } | |
185 | ||
36c16a7c LP |
186 | if (usec == USEC_INFINITY) |
187 | return 0; | |
188 | ||
7dfbe2e3 | 189 | r = sd_event_add_time( |
6a0f1f6d LP |
190 | UNIT(s)->manager->event, |
191 | &s->timer_event_source, | |
192 | CLOCK_MONOTONIC, | |
36c16a7c | 193 | usec, 0, |
6a0f1f6d | 194 | socket_dispatch_timer, s); |
7dfbe2e3 TG |
195 | if (r < 0) |
196 | return r; | |
197 | ||
198 | (void) sd_event_source_set_description(s->timer_event_source, "socket-timer"); | |
199 | ||
200 | return 0; | |
5cb5a6ff LP |
201 | } |
202 | ||
8b835fcc ZJS |
203 | int socket_instantiate_service(Socket *s) { |
204 | _cleanup_free_ char *prefix = NULL, *name = NULL; | |
b15bdda8 LP |
205 | int r; |
206 | Unit *u; | |
207 | ||
208 | assert(s); | |
209 | ||
210 | /* This fills in s->service if it isn't filled in yet. For | |
211 | * Accept=yes sockets we create the next connection service | |
212 | * here. For Accept=no this is mostly a NOP since the service | |
213 | * is figured out at load time anyway. */ | |
214 | ||
7410616c | 215 | if (UNIT_DEREF(s->service)) |
b15bdda8 LP |
216 | return 0; |
217 | ||
7410616c LP |
218 | if (!s->accept) |
219 | return 0; | |
220 | ||
221 | r = unit_name_to_prefix(UNIT(s)->id, &prefix); | |
222 | if (r < 0) | |
223 | return r; | |
b15bdda8 | 224 | |
315db1a8 | 225 | if (asprintf(&name, "%s@%u.service", prefix, s->n_accepted) < 0) |
b15bdda8 LP |
226 | return -ENOMEM; |
227 | ||
1124fe6f | 228 | r = manager_load_unit(UNIT(s)->manager, name, NULL, NULL, &u); |
b15bdda8 LP |
229 | if (r < 0) |
230 | return r; | |
231 | ||
ac155bb8 | 232 | u->no_gc = true; |
57020a3a LP |
233 | unit_ref_set(&s->service, u); |
234 | ||
235 | return unit_add_two_dependencies(UNIT(s), UNIT_BEFORE, UNIT_TRIGGERS, u, false); | |
b15bdda8 LP |
236 | } |
237 | ||
4f2d528d LP |
238 | static bool have_non_accept_socket(Socket *s) { |
239 | SocketPort *p; | |
240 | ||
241 | assert(s); | |
242 | ||
243 | if (!s->accept) | |
244 | return true; | |
245 | ||
dd5ad9d4 LP |
246 | LIST_FOREACH(port, p, s->ports) { |
247 | ||
248 | if (p->type != SOCKET_SOCKET) | |
249 | return true; | |
250 | ||
4f2d528d LP |
251 | if (!socket_address_can_accept(&p->address)) |
252 | return true; | |
dd5ad9d4 | 253 | } |
4f2d528d LP |
254 | |
255 | return false; | |
256 | } | |
257 | ||
a57f7e2c | 258 | static int socket_add_mount_links(Socket *s) { |
6e2ef85b | 259 | SocketPort *p; |
6e2ef85b LP |
260 | int r; |
261 | ||
262 | assert(s); | |
6e2ef85b | 263 | |
a57f7e2c LP |
264 | LIST_FOREACH(port, p, s->ports) { |
265 | const char *path = NULL; | |
6e2ef85b | 266 | |
a57f7e2c LP |
267 | if (p->type == SOCKET_SOCKET) |
268 | path = socket_address_get_path(&p->address); | |
60252446 | 269 | else if (IN_SET(p->type, SOCKET_FIFO, SOCKET_SPECIAL, SOCKET_USB_FUNCTION)) |
a57f7e2c | 270 | path = p->path; |
6e2ef85b | 271 | |
a57f7e2c LP |
272 | if (!path) |
273 | continue; | |
6e2ef85b | 274 | |
a57f7e2c | 275 | r = unit_require_mounts_for(UNIT(s), path); |
b87705cd | 276 | if (r < 0) |
6e2ef85b | 277 | return r; |
b87705cd | 278 | } |
6e2ef85b LP |
279 | |
280 | return 0; | |
281 | } | |
282 | ||
283 | static int socket_add_device_link(Socket *s) { | |
284 | char *t; | |
6e2ef85b LP |
285 | |
286 | assert(s); | |
287 | ||
7d0c710d | 288 | if (!s->bind_to_device || streq(s->bind_to_device, "lo")) |
6e2ef85b LP |
289 | return 0; |
290 | ||
63c372cb | 291 | t = strjoina("/sys/subsystem/net/devices/", s->bind_to_device); |
9d06297e | 292 | return unit_add_node_link(UNIT(s), t, false, UNIT_BINDS_TO); |
6e2ef85b LP |
293 | } |
294 | ||
a40eb732 LP |
295 | static int socket_add_default_dependencies(Socket *s) { |
296 | int r; | |
297 | assert(s); | |
298 | ||
4c9ea260 LP |
299 | if (!UNIT(s)->default_dependencies) |
300 | return 0; | |
301 | ||
e3d84721 LP |
302 | r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true); |
303 | if (r < 0) | |
304 | return r; | |
2a77d31d | 305 | |
463d0d15 | 306 | if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) { |
e3d84721 LP |
307 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true); |
308 | if (r < 0) | |
a40eb732 | 309 | return r; |
2a77d31d | 310 | } |
a40eb732 | 311 | |
ead8e478 | 312 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); |
a40eb732 LP |
313 | } |
314 | ||
44a6b1b6 | 315 | _pure_ static bool socket_has_exec(Socket *s) { |
4cfc6dbe LP |
316 | unsigned i; |
317 | assert(s); | |
318 | ||
319 | for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++) | |
320 | if (s->exec_command[i]) | |
321 | return true; | |
322 | ||
323 | return false; | |
324 | } | |
325 | ||
e821075a LP |
326 | static int socket_add_extras(Socket *s) { |
327 | Unit *u = UNIT(s); | |
e537352b | 328 | int r; |
44d8db9e | 329 | |
e821075a | 330 | assert(s); |
57020a3a | 331 | |
e821075a | 332 | if (have_non_accept_socket(s)) { |
23a177ef | 333 | |
e821075a LP |
334 | if (!UNIT_DEREF(s->service)) { |
335 | Unit *x; | |
57020a3a | 336 | |
e821075a | 337 | r = unit_load_related_unit(u, ".service", &x); |
57020a3a | 338 | if (r < 0) |
4f2d528d | 339 | return r; |
e821075a LP |
340 | |
341 | unit_ref_set(&s->service, x); | |
4f2d528d | 342 | } |
44d8db9e | 343 | |
e821075a LP |
344 | r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(s->service), true); |
345 | if (r < 0) | |
6e2ef85b | 346 | return r; |
e821075a | 347 | } |
6e2ef85b | 348 | |
e821075a LP |
349 | r = socket_add_mount_links(s); |
350 | if (r < 0) | |
351 | return r; | |
6e2ef85b | 352 | |
e821075a LP |
353 | r = socket_add_device_link(s); |
354 | if (r < 0) | |
355 | return r; | |
356 | ||
598459ce | 357 | r = unit_patch_contexts(u); |
e821075a LP |
358 | if (r < 0) |
359 | return r; | |
360 | ||
361 | if (socket_has_exec(s)) { | |
362 | r = unit_add_exec_dependencies(u, &s->exec_context); | |
363 | if (r < 0) | |
364 | return r; | |
23a177ef | 365 | |
d79200e2 | 366 | r = unit_set_default_slice(u); |
a016b922 LP |
367 | if (r < 0) |
368 | return r; | |
e821075a | 369 | } |
a016b922 | 370 | |
4c9ea260 LP |
371 | r = socket_add_default_dependencies(s); |
372 | if (r < 0) | |
373 | return r; | |
e821075a LP |
374 | |
375 | return 0; | |
376 | } | |
377 | ||
811ba7a0 LP |
378 | static const char *socket_find_symlink_target(Socket *s) { |
379 | const char *found = NULL; | |
380 | SocketPort *p; | |
381 | ||
382 | LIST_FOREACH(port, p, s->ports) { | |
383 | const char *f = NULL; | |
384 | ||
385 | switch (p->type) { | |
386 | ||
387 | case SOCKET_FIFO: | |
388 | f = p->path; | |
389 | break; | |
390 | ||
391 | case SOCKET_SOCKET: | |
392 | if (p->address.sockaddr.un.sun_path[0] != 0) | |
393 | f = p->address.sockaddr.un.sun_path; | |
394 | break; | |
395 | ||
396 | default: | |
397 | break; | |
398 | } | |
399 | ||
400 | if (f) { | |
401 | if (found) | |
402 | return NULL; | |
403 | ||
404 | found = f; | |
405 | } | |
406 | } | |
407 | ||
408 | return found; | |
409 | } | |
410 | ||
e821075a LP |
411 | static int socket_verify(Socket *s) { |
412 | assert(s); | |
413 | ||
414 | if (UNIT(s)->load_state != UNIT_LOADED) | |
415 | return 0; | |
416 | ||
417 | if (!s->ports) { | |
f2341e0a | 418 | log_unit_error(UNIT(s), "Unit lacks Listen setting. Refusing."); |
e821075a LP |
419 | return -EINVAL; |
420 | } | |
421 | ||
422 | if (s->accept && have_non_accept_socket(s)) { | |
f2341e0a | 423 | log_unit_error(UNIT(s), "Unit configured for accepting sockets, but sockets are non-accepting. Refusing."); |
e821075a LP |
424 | return -EINVAL; |
425 | } | |
426 | ||
427 | if (s->accept && s->max_connections <= 0) { | |
f2341e0a | 428 | log_unit_error(UNIT(s), "MaxConnection= setting too small. Refusing."); |
e821075a LP |
429 | return -EINVAL; |
430 | } | |
e06c73cc | 431 | |
e821075a | 432 | if (s->accept && UNIT_DEREF(s->service)) { |
f2341e0a | 433 | log_unit_error(UNIT(s), "Explicit service configuration for accepting socket units not supported. Refusing."); |
e821075a LP |
434 | return -EINVAL; |
435 | } | |
436 | ||
437 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { | |
f2341e0a | 438 | log_unit_error(UNIT(s), "Unit has PAM enabled. Kill mode must be set to 'control-group'. Refusing."); |
e821075a LP |
439 | return -EINVAL; |
440 | } | |
441 | ||
811ba7a0 | 442 | if (!strv_isempty(s->symlinks) && !socket_find_symlink_target(s)) { |
f2341e0a | 443 | log_unit_error(UNIT(s), "Unit has symlinks set but none or more than one node in the file system. Refusing."); |
811ba7a0 LP |
444 | return -EINVAL; |
445 | } | |
446 | ||
e821075a LP |
447 | return 0; |
448 | } | |
449 | ||
450 | static int socket_load(Unit *u) { | |
451 | Socket *s = SOCKET(u); | |
452 | int r; | |
453 | ||
454 | assert(u); | |
455 | assert(u->load_state == UNIT_STUB); | |
456 | ||
457 | r = unit_load_fragment_and_dropin(u); | |
458 | if (r < 0) | |
459 | return r; | |
460 | ||
461 | if (u->load_state == UNIT_LOADED) { | |
462 | /* This is a new unit? Then let's add in some extras */ | |
463 | r = socket_add_extras(s); | |
e06c73cc LP |
464 | if (r < 0) |
465 | return r; | |
23a177ef LP |
466 | } |
467 | ||
4f2d528d | 468 | return socket_verify(s); |
44d8db9e LP |
469 | } |
470 | ||
44a6b1b6 | 471 | _const_ static const char* listen_lookup(int family, int type) { |
7a22745a LP |
472 | |
473 | if (family == AF_NETLINK) | |
474 | return "ListenNetlink"; | |
542563ba LP |
475 | |
476 | if (type == SOCK_STREAM) | |
477 | return "ListenStream"; | |
478 | else if (type == SOCK_DGRAM) | |
479 | return "ListenDatagram"; | |
480 | else if (type == SOCK_SEQPACKET) | |
481 | return "ListenSequentialPacket"; | |
482 | ||
034c6ed7 | 483 | assert_not_reached("Unknown socket type"); |
542563ba LP |
484 | return NULL; |
485 | } | |
486 | ||
87f0e418 | 487 | static void socket_dump(Unit *u, FILE *f, const char *prefix) { |
209e9dcd | 488 | char time_string[FORMAT_TIMESPAN_MAX]; |
5cb5a6ff | 489 | SocketExecCommand c; |
87f0e418 | 490 | Socket *s = SOCKET(u); |
542563ba | 491 | SocketPort *p; |
82ba9f08 | 492 | const char *prefix2; |
5cb5a6ff LP |
493 | |
494 | assert(s); | |
fa068367 | 495 | assert(f); |
5cb5a6ff | 496 | |
4c940960 | 497 | prefix = strempty(prefix); |
63c372cb | 498 | prefix2 = strjoina(prefix, "\t"); |
c43d20a0 | 499 | |
5cb5a6ff LP |
500 | fprintf(f, |
501 | "%sSocket State: %s\n" | |
81a5c6d0 | 502 | "%sResult: %s\n" |
542563ba | 503 | "%sBindIPv6Only: %s\n" |
b5a0699f LP |
504 | "%sBacklog: %u\n" |
505 | "%sSocketMode: %04o\n" | |
4fd5948e LP |
506 | "%sDirectoryMode: %04o\n" |
507 | "%sKeepAlive: %s\n" | |
4427c3f4 | 508 | "%sNoDelay: %s\n" |
cebf8b20 | 509 | "%sFreeBind: %s\n" |
6b6d2dee | 510 | "%sTransparent: %s\n" |
ec6370a2 | 511 | "%sBroadcast: %s\n" |
ede3deb4 | 512 | "%sPassCredentials: %s\n" |
54ecda32 | 513 | "%sPassSecurity: %s\n" |
bd1fe7c7 | 514 | "%sTCPCongestion: %s\n" |
16115b0a | 515 | "%sRemoveOnStop: %s\n" |
55301ec0 | 516 | "%sWritable: %s\n" |
8dd4c05b | 517 | "%sFDName: %s\n" |
16115b0a | 518 | "%sSELinuxContextFromNet: %s\n", |
a16e1123 | 519 | prefix, socket_state_to_string(s->state), |
81a5c6d0 | 520 | prefix, socket_result_to_string(s->result), |
c0120d99 | 521 | prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only), |
b5a0699f LP |
522 | prefix, s->backlog, |
523 | prefix, s->socket_mode, | |
4fd5948e LP |
524 | prefix, s->directory_mode, |
525 | prefix, yes_no(s->keep_alive), | |
4427c3f4 | 526 | prefix, yes_no(s->no_delay), |
cebf8b20 | 527 | prefix, yes_no(s->free_bind), |
6b6d2dee | 528 | prefix, yes_no(s->transparent), |
ec6370a2 | 529 | prefix, yes_no(s->broadcast), |
d68af586 | 530 | prefix, yes_no(s->pass_cred), |
54ecda32 | 531 | prefix, yes_no(s->pass_sec), |
bd1fe7c7 | 532 | prefix, strna(s->tcp_congestion), |
16115b0a | 533 | prefix, yes_no(s->remove_on_stop), |
55301ec0 | 534 | prefix, yes_no(s->writable), |
8dd4c05b | 535 | prefix, socket_fdname(s), |
16115b0a | 536 | prefix, yes_no(s->selinux_context_from_net)); |
542563ba | 537 | |
70123e68 LP |
538 | if (s->control_pid > 0) |
539 | fprintf(f, | |
de0671ee ZJS |
540 | "%sControl PID: "PID_FMT"\n", |
541 | prefix, s->control_pid); | |
70123e68 | 542 | |
acbb0225 LP |
543 | if (s->bind_to_device) |
544 | fprintf(f, | |
545 | "%sBindToDevice: %s\n", | |
546 | prefix, s->bind_to_device); | |
547 | ||
4f2d528d LP |
548 | if (s->accept) |
549 | fprintf(f, | |
6cf6bbc2 LP |
550 | "%sAccepted: %u\n" |
551 | "%sNConnections: %u\n" | |
552 | "%sMaxConnections: %u\n", | |
553 | prefix, s->n_accepted, | |
554 | prefix, s->n_connections, | |
555 | prefix, s->max_connections); | |
4f2d528d | 556 | |
4fd5948e LP |
557 | if (s->priority >= 0) |
558 | fprintf(f, | |
559 | "%sPriority: %i\n", | |
560 | prefix, s->priority); | |
561 | ||
562 | if (s->receive_buffer > 0) | |
563 | fprintf(f, | |
564 | "%sReceiveBuffer: %zu\n", | |
565 | prefix, s->receive_buffer); | |
566 | ||
567 | if (s->send_buffer > 0) | |
568 | fprintf(f, | |
569 | "%sSendBuffer: %zu\n", | |
570 | prefix, s->send_buffer); | |
571 | ||
572 | if (s->ip_tos >= 0) | |
573 | fprintf(f, | |
574 | "%sIPTOS: %i\n", | |
575 | prefix, s->ip_tos); | |
576 | ||
577 | if (s->ip_ttl >= 0) | |
578 | fprintf(f, | |
579 | "%sIPTTL: %i\n", | |
580 | prefix, s->ip_ttl); | |
581 | ||
582 | if (s->pipe_size > 0) | |
583 | fprintf(f, | |
584 | "%sPipeSize: %zu\n", | |
585 | prefix, s->pipe_size); | |
586 | ||
587 | if (s->mark >= 0) | |
588 | fprintf(f, | |
589 | "%sMark: %i\n", | |
590 | prefix, s->mark); | |
591 | ||
916abb21 LP |
592 | if (s->mq_maxmsg > 0) |
593 | fprintf(f, | |
594 | "%sMessageQueueMaxMessages: %li\n", | |
595 | prefix, s->mq_maxmsg); | |
596 | ||
597 | if (s->mq_msgsize > 0) | |
598 | fprintf(f, | |
599 | "%sMessageQueueMessageSize: %li\n", | |
600 | prefix, s->mq_msgsize); | |
601 | ||
718db961 | 602 | if (s->reuse_port) |
f7db7a69 SL |
603 | fprintf(f, |
604 | "%sReusePort: %s\n", | |
718db961 | 605 | prefix, yes_no(s->reuse_port)); |
f7db7a69 | 606 | |
0eb59ccf AK |
607 | if (s->smack) |
608 | fprintf(f, | |
609 | "%sSmackLabel: %s\n", | |
610 | prefix, s->smack); | |
611 | ||
612 | if (s->smack_ip_in) | |
613 | fprintf(f, | |
614 | "%sSmackLabelIPIn: %s\n", | |
615 | prefix, s->smack_ip_in); | |
616 | ||
617 | if (s->smack_ip_out) | |
618 | fprintf(f, | |
619 | "%sSmackLabelIPOut: %s\n", | |
620 | prefix, s->smack_ip_out); | |
621 | ||
3900e5fd LP |
622 | if (!isempty(s->user) || !isempty(s->group)) |
623 | fprintf(f, | |
624 | "%sOwnerUser: %s\n" | |
625 | "%sOwnerGroup: %s\n", | |
626 | prefix, strna(s->user), | |
627 | prefix, strna(s->group)); | |
628 | ||
3cd761e4 | 629 | if (s->keep_alive_time > 0) |
209e9dcd | 630 | fprintf(f, |
3cd761e4 LP |
631 | "%sKeepAliveTimeSec: %s\n", |
632 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->keep_alive_time, USEC_PER_SEC)); | |
209e9dcd | 633 | |
3cd761e4 | 634 | if (s->keep_alive_interval) |
209e9dcd | 635 | fprintf(f, |
3cd761e4 LP |
636 | "%sKeepAliveIntervalSec: %s\n", |
637 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->keep_alive_interval, USEC_PER_SEC)); | |
209e9dcd | 638 | |
3cd761e4 | 639 | if (s->keep_alive_cnt) |
209e9dcd SS |
640 | fprintf(f, |
641 | "%sKeepAliveProbes: %u\n", | |
642 | prefix, s->keep_alive_cnt); | |
643 | ||
3cd761e4 | 644 | if (s->defer_accept) |
cc567c9b | 645 | fprintf(f, |
3cd761e4 LP |
646 | "%sDeferAcceptSec: %s\n", |
647 | prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->defer_accept, USEC_PER_SEC)); | |
cc567c9b | 648 | |
034c6ed7 | 649 | LIST_FOREACH(port, p, s->ports) { |
5cb5a6ff | 650 | |
542563ba LP |
651 | if (p->type == SOCKET_SOCKET) { |
652 | const char *t; | |
653 | int r; | |
e364ad06 | 654 | char *k = NULL; |
542563ba | 655 | |
e53fc357 LP |
656 | r = socket_address_print(&p->address, &k); |
657 | if (r < 0) | |
542563ba LP |
658 | t = strerror(-r); |
659 | else | |
660 | t = k; | |
661 | ||
7a22745a | 662 | fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t); |
542563ba | 663 | free(k); |
b0a3f2bc LP |
664 | } else if (p->type == SOCKET_SPECIAL) |
665 | fprintf(f, "%sListenSpecial: %s\n", prefix, p->path); | |
60252446 PS |
666 | else if (p->type == SOCKET_USB_FUNCTION) |
667 | fprintf(f, "%sListenUSBFunction: %s\n", prefix, p->path); | |
916abb21 LP |
668 | else if (p->type == SOCKET_MQUEUE) |
669 | fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path); | |
b0a3f2bc | 670 | else |
542563ba LP |
671 | fprintf(f, "%sListenFIFO: %s\n", prefix, p->path); |
672 | } | |
5cb5a6ff LP |
673 | |
674 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 675 | kill_context_dump(&s->kill_context, f, prefix); |
5cb5a6ff | 676 | |
e537352b | 677 | for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) { |
c43d20a0 LP |
678 | if (!s->exec_command[c]) |
679 | continue; | |
5cb5a6ff | 680 | |
40d50879 | 681 | fprintf(f, "%s-> %s:\n", |
a16e1123 | 682 | prefix, socket_exec_command_to_string(c)); |
c43d20a0 LP |
683 | |
684 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff LP |
685 | } |
686 | } | |
687 | ||
4f2d528d LP |
688 | static int instance_from_socket(int fd, unsigned nr, char **instance) { |
689 | socklen_t l; | |
690 | char *r; | |
9d16d0c7 | 691 | union sockaddr_union local, remote; |
4f2d528d LP |
692 | |
693 | assert(fd >= 0); | |
694 | assert(instance); | |
695 | ||
696 | l = sizeof(local); | |
697 | if (getsockname(fd, &local.sa, &l) < 0) | |
698 | return -errno; | |
699 | ||
700 | l = sizeof(remote); | |
701 | if (getpeername(fd, &remote.sa, &l) < 0) | |
702 | return -errno; | |
703 | ||
704 | switch (local.sa.sa_family) { | |
705 | ||
706 | case AF_INET: { | |
707 | uint32_t | |
708 | a = ntohl(local.in.sin_addr.s_addr), | |
709 | b = ntohl(remote.in.sin_addr.s_addr); | |
710 | ||
711 | if (asprintf(&r, | |
77b088c2 LP |
712 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
713 | nr, | |
4f2d528d LP |
714 | a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF, |
715 | ntohs(local.in.sin_port), | |
716 | b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF, | |
717 | ntohs(remote.in.sin_port)) < 0) | |
718 | return -ENOMEM; | |
719 | ||
720 | break; | |
721 | } | |
722 | ||
723 | case AF_INET6: { | |
c65a0b14 | 724 | static const unsigned char ipv4_prefix[] = { |
2b061f5a LP |
725 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF |
726 | }; | |
727 | ||
728 | if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 && | |
729 | memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) { | |
730 | const uint8_t | |
731 | *a = local.in6.sin6_addr.s6_addr+12, | |
732 | *b = remote.in6.sin6_addr.s6_addr+12; | |
733 | ||
734 | if (asprintf(&r, | |
77b088c2 LP |
735 | "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u", |
736 | nr, | |
2b061f5a LP |
737 | a[0], a[1], a[2], a[3], |
738 | ntohs(local.in6.sin6_port), | |
739 | b[0], b[1], b[2], b[3], | |
740 | ntohs(remote.in6.sin6_port)) < 0) | |
741 | return -ENOMEM; | |
742 | } else { | |
743 | char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN]; | |
744 | ||
745 | if (asprintf(&r, | |
77b088c2 LP |
746 | "%u-%s:%u-%s:%u", |
747 | nr, | |
2b061f5a LP |
748 | inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)), |
749 | ntohs(local.in6.sin6_port), | |
750 | inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)), | |
751 | ntohs(remote.in6.sin6_port)) < 0) | |
752 | return -ENOMEM; | |
753 | } | |
4f2d528d LP |
754 | |
755 | break; | |
756 | } | |
757 | ||
758 | case AF_UNIX: { | |
759 | struct ucred ucred; | |
eff05270 | 760 | int k; |
4f2d528d | 761 | |
eff05270 | 762 | k = getpeercred(fd, &ucred); |
d38f6e34 ZJS |
763 | if (k >= 0) { |
764 | if (asprintf(&r, | |
765 | "%u-"PID_FMT"-"UID_FMT, | |
766 | nr, ucred.pid, ucred.uid) < 0) | |
767 | return -ENOMEM; | |
768 | } else if (k == -ENODATA) { | |
769 | /* This handles the case where somebody is | |
770 | * connecting from another pid/uid namespace | |
771 | * (e.g. from outside of our container). */ | |
772 | if (asprintf(&r, | |
773 | "%u-unknown", | |
774 | nr) < 0) | |
775 | return -ENOMEM; | |
776 | } else | |
eff05270 | 777 | return k; |
2f20a8eb | 778 | |
2f20a8eb | 779 | break; |
4f2d528d LP |
780 | } |
781 | ||
782 | default: | |
783 | assert_not_reached("Unhandled socket type."); | |
784 | } | |
785 | ||
786 | *instance = r; | |
787 | return 0; | |
788 | } | |
789 | ||
034c6ed7 | 790 | static void socket_close_fds(Socket *s) { |
83c60c9f | 791 | SocketPort *p; |
811ba7a0 | 792 | char **i; |
83c60c9f LP |
793 | |
794 | assert(s); | |
795 | ||
034c6ed7 | 796 | LIST_FOREACH(port, p, s->ports) { |
718db961 LP |
797 | |
798 | p->event_source = sd_event_source_unref(p->event_source); | |
799 | ||
83c60c9f LP |
800 | if (p->fd < 0) |
801 | continue; | |
802 | ||
03e334a1 | 803 | p->fd = safe_close(p->fd); |
15087cdb | 804 | socket_cleanup_fd_list(p); |
a16e1123 | 805 | |
bd1fe7c7 LP |
806 | /* One little note: we should normally not delete any |
807 | * sockets in the file system here! After all some | |
808 | * other process we spawned might still have a | |
809 | * reference of this fd and wants to continue to use | |
810 | * it. Therefore we delete sockets in the file system | |
811 | * before we create a new one, not after we stopped | |
812 | * using one! */ | |
813 | ||
814 | if (s->remove_on_stop) { | |
815 | switch (p->type) { | |
816 | ||
817 | case SOCKET_FIFO: | |
818 | unlink(p->path); | |
819 | break; | |
820 | ||
821 | case SOCKET_MQUEUE: | |
822 | mq_unlink(p->path); | |
823 | break; | |
824 | ||
825 | case SOCKET_SOCKET: | |
826 | socket_address_unlink(&p->address); | |
827 | break; | |
828 | ||
829 | default: | |
830 | break; | |
831 | } | |
832 | } | |
83c60c9f | 833 | } |
811ba7a0 LP |
834 | |
835 | if (s->remove_on_stop) | |
836 | STRV_FOREACH(i, s->symlinks) | |
837 | unlink(*i); | |
83c60c9f LP |
838 | } |
839 | ||
4fd5948e | 840 | static void socket_apply_socket_options(Socket *s, int fd) { |
d53e386d LP |
841 | int r; |
842 | ||
4fd5948e LP |
843 | assert(s); |
844 | assert(fd >= 0); | |
845 | ||
846 | if (s->keep_alive) { | |
847 | int b = s->keep_alive; | |
848 | if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0) | |
f2341e0a | 849 | log_unit_warning_errno(UNIT(s), errno, "SO_KEEPALIVE failed: %m"); |
4fd5948e LP |
850 | } |
851 | ||
209e9dcd SS |
852 | if (s->keep_alive_time) { |
853 | int value = s->keep_alive_time / USEC_PER_SEC; | |
854 | if (setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &value, sizeof(value)) < 0) | |
f2341e0a | 855 | log_unit_warning_errno(UNIT(s), errno, "TCP_KEEPIDLE failed: %m"); |
209e9dcd SS |
856 | } |
857 | ||
858 | if (s->keep_alive_interval) { | |
920b52e4 | 859 | int value = s->keep_alive_interval / USEC_PER_SEC; |
209e9dcd | 860 | if (setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &value, sizeof(value)) < 0) |
f2341e0a | 861 | log_unit_warning_errno(UNIT(s), errno, "TCP_KEEPINTVL failed: %m"); |
209e9dcd SS |
862 | } |
863 | ||
864 | if (s->keep_alive_cnt) { | |
865 | int value = s->keep_alive_cnt; | |
172cfe87 | 866 | if (setsockopt(fd, SOL_TCP, TCP_KEEPCNT, &value, sizeof(value)) < 0) |
f2341e0a | 867 | log_unit_warning_errno(UNIT(s), errno, "TCP_KEEPCNT failed: %m"); |
209e9dcd SS |
868 | } |
869 | ||
cc567c9b SS |
870 | if (s->defer_accept) { |
871 | int value = s->defer_accept / USEC_PER_SEC; | |
872 | if (setsockopt(fd, SOL_TCP, TCP_DEFER_ACCEPT, &value, sizeof(value)) < 0) | |
f2341e0a | 873 | log_unit_warning_errno(UNIT(s), errno, "TCP_DEFER_ACCEPT failed: %m"); |
cc567c9b SS |
874 | } |
875 | ||
4427c3f4 SS |
876 | if (s->no_delay) { |
877 | int b = s->no_delay; | |
62bc4efc SS |
878 | |
879 | if (s->socket_protocol == IPPROTO_SCTP) { | |
880 | if (setsockopt(fd, SOL_SCTP, SCTP_NODELAY, &b, sizeof(b)) < 0) | |
881 | log_unit_warning_errno(UNIT(s), errno, "SCTP_NODELAY failed: %m"); | |
882 | } else { | |
883 | if (setsockopt(fd, SOL_TCP, TCP_NODELAY, &b, sizeof(b)) < 0) | |
884 | log_unit_warning_errno(UNIT(s), errno, "TCP_NODELAY failed: %m"); | |
885 | } | |
4427c3f4 SS |
886 | } |
887 | ||
ec6370a2 LP |
888 | if (s->broadcast) { |
889 | int one = 1; | |
890 | if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0) | |
f2341e0a | 891 | log_unit_warning_errno(UNIT(s), errno, "SO_BROADCAST failed: %m"); |
ec6370a2 LP |
892 | } |
893 | ||
d68af586 MS |
894 | if (s->pass_cred) { |
895 | int one = 1; | |
896 | if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) | |
f2341e0a | 897 | log_unit_warning_errno(UNIT(s), errno, "SO_PASSCRED failed: %m"); |
d68af586 MS |
898 | } |
899 | ||
54ecda32 LP |
900 | if (s->pass_sec) { |
901 | int one = 1; | |
902 | if (setsockopt(fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one)) < 0) | |
f2341e0a | 903 | log_unit_warning_errno(UNIT(s), errno, "SO_PASSSEC failed: %m"); |
54ecda32 LP |
904 | } |
905 | ||
4fd5948e LP |
906 | if (s->priority >= 0) |
907 | if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0) | |
f2341e0a | 908 | log_unit_warning_errno(UNIT(s), errno, "SO_PRIORITY failed: %m"); |
4fd5948e LP |
909 | |
910 | if (s->receive_buffer > 0) { | |
911 | int value = (int) s->receive_buffer; | |
7d9eaa84 LP |
912 | |
913 | /* We first try with SO_RCVBUFFORCE, in case we have the perms for that */ | |
914 | ||
b8cef44e | 915 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0) |
7d9eaa84 | 916 | if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0) |
f2341e0a | 917 | log_unit_warning_errno(UNIT(s), errno, "SO_RCVBUF failed: %m"); |
4fd5948e LP |
918 | } |
919 | ||
920 | if (s->send_buffer > 0) { | |
921 | int value = (int) s->send_buffer; | |
b8cef44e | 922 | if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0) |
7d9eaa84 | 923 | if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)) < 0) |
f2341e0a | 924 | log_unit_warning_errno(UNIT(s), errno, "SO_SNDBUF failed: %m"); |
4fd5948e LP |
925 | } |
926 | ||
927 | if (s->mark >= 0) | |
928 | if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0) | |
f2341e0a | 929 | log_unit_warning_errno(UNIT(s), errno, "SO_MARK failed: %m"); |
4fd5948e LP |
930 | |
931 | if (s->ip_tos >= 0) | |
932 | if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0) | |
f2341e0a | 933 | log_unit_warning_errno(UNIT(s), errno, "IP_TOS failed: %m"); |
4fd5948e | 934 | |
46925ac5 | 935 | if (s->ip_ttl >= 0) { |
d53e386d | 936 | int x; |
46925ac5 LP |
937 | |
938 | r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl)); | |
5bfcc1c6 FF |
939 | |
940 | if (socket_ipv6_is_supported()) | |
941 | x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl)); | |
942 | else { | |
943 | x = -1; | |
944 | errno = EAFNOSUPPORT; | |
945 | } | |
46925ac5 LP |
946 | |
947 | if (r < 0 && x < 0) | |
f2341e0a | 948 | log_unit_warning_errno(UNIT(s), errno, "IP_TTL/IPV6_UNICAST_HOPS failed: %m"); |
46925ac5 | 949 | } |
cebf8b20 TT |
950 | |
951 | if (s->tcp_congestion) | |
952 | if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0) | |
f2341e0a | 953 | log_unit_warning_errno(UNIT(s), errno, "TCP_CONGESTION failed: %m"); |
0eb59ccf | 954 | |
d53e386d | 955 | if (s->smack_ip_in) { |
5ab58c20 | 956 | r = mac_smack_apply_fd(fd, SMACK_ATTR_IPIN, s->smack_ip_in); |
d53e386d | 957 | if (r < 0) |
f2341e0a | 958 | log_unit_error_errno(UNIT(s), r, "mac_smack_apply_ip_in_fd: %m"); |
d53e386d | 959 | } |
9a4e038c | 960 | |
d53e386d | 961 | if (s->smack_ip_out) { |
5ab58c20 | 962 | r = mac_smack_apply_fd(fd, SMACK_ATTR_IPOUT, s->smack_ip_out); |
d53e386d | 963 | if (r < 0) |
f2341e0a | 964 | log_unit_error_errno(UNIT(s), r, "mac_smack_apply_ip_out_fd: %m"); |
d53e386d | 965 | } |
4fd5948e LP |
966 | } |
967 | ||
b15bdda8 | 968 | static void socket_apply_fifo_options(Socket *s, int fd) { |
d53e386d LP |
969 | int r; |
970 | ||
4fd5948e LP |
971 | assert(s); |
972 | assert(fd >= 0); | |
973 | ||
974 | if (s->pipe_size > 0) | |
975 | if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0) | |
ed460b07 | 976 | log_unit_warning_errno(UNIT(s), errno, "Setting pipe size failed, ignoring: %m"); |
0eb59ccf | 977 | |
d53e386d | 978 | if (s->smack) { |
5ab58c20 | 979 | r = mac_smack_apply_fd(fd, SMACK_ATTR_ACCESS, s->smack); |
d53e386d | 980 | if (r < 0) |
ed460b07 | 981 | log_unit_error_errno(UNIT(s), r, "SMACK relabelling failed, ignoring: %m"); |
d53e386d | 982 | } |
4fd5948e LP |
983 | } |
984 | ||
b15bdda8 LP |
985 | static int fifo_address_create( |
986 | const char *path, | |
987 | mode_t directory_mode, | |
e8da24a6 | 988 | mode_t socket_mode) { |
b15bdda8 | 989 | |
e8da24a6 | 990 | _cleanup_close_ int fd = -1; |
b15bdda8 | 991 | mode_t old_mask; |
e8da24a6 LP |
992 | struct stat st; |
993 | int r; | |
b15bdda8 LP |
994 | |
995 | assert(path); | |
b15bdda8 | 996 | |
d2e54fae | 997 | mkdir_parents_label(path, directory_mode); |
b15bdda8 | 998 | |
ecabcf8b | 999 | r = mac_selinux_create_file_prepare(path, S_IFIFO); |
e9a5ef7c | 1000 | if (r < 0) |
e8da24a6 | 1001 | return r; |
b15bdda8 LP |
1002 | |
1003 | /* Enforce the right access mode for the fifo */ | |
1004 | old_mask = umask(~ socket_mode); | |
1005 | ||
1006 | /* Include the original umask in our mask */ | |
e8da24a6 | 1007 | (void) umask(~socket_mode | old_mask); |
b15bdda8 LP |
1008 | |
1009 | r = mkfifo(path, socket_mode); | |
e8da24a6 | 1010 | (void) umask(old_mask); |
b15bdda8 | 1011 | |
94bc2731 | 1012 | if (r < 0 && errno != EEXIST) { |
b15bdda8 LP |
1013 | r = -errno; |
1014 | goto fail; | |
1015 | } | |
1016 | ||
e8da24a6 | 1017 | fd = open(path, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK | O_NOFOLLOW); |
3cc2aff1 | 1018 | if (fd < 0) { |
b15bdda8 LP |
1019 | r = -errno; |
1020 | goto fail; | |
1021 | } | |
1022 | ||
ecabcf8b | 1023 | mac_selinux_create_file_clear(); |
7a58bfa4 | 1024 | |
b15bdda8 LP |
1025 | if (fstat(fd, &st) < 0) { |
1026 | r = -errno; | |
1027 | goto fail; | |
1028 | } | |
1029 | ||
1030 | if (!S_ISFIFO(st.st_mode) || | |
de0200fc | 1031 | (st.st_mode & 0777) != (socket_mode & ~old_mask) || |
e4f44e73 DR |
1032 | st.st_uid != getuid() || |
1033 | st.st_gid != getgid()) { | |
b15bdda8 LP |
1034 | r = -EEXIST; |
1035 | goto fail; | |
1036 | } | |
1037 | ||
e8da24a6 LP |
1038 | r = fd; |
1039 | fd = -1; | |
1040 | ||
1041 | return r; | |
b15bdda8 LP |
1042 | |
1043 | fail: | |
ecabcf8b | 1044 | mac_selinux_create_file_clear(); |
b15bdda8 LP |
1045 | return r; |
1046 | } | |
1047 | ||
55301ec0 | 1048 | static int special_address_create(const char *path, bool writable) { |
e8da24a6 | 1049 | _cleanup_close_ int fd = -1; |
b0a3f2bc | 1050 | struct stat st; |
e8da24a6 | 1051 | int r; |
b0a3f2bc LP |
1052 | |
1053 | assert(path); | |
b0a3f2bc | 1054 | |
55301ec0 | 1055 | fd = open(path, (writable ? O_RDWR : O_RDONLY)|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW); |
e8da24a6 LP |
1056 | if (fd < 0) |
1057 | return -errno; | |
b0a3f2bc | 1058 | |
e8da24a6 LP |
1059 | if (fstat(fd, &st) < 0) |
1060 | return -errno; | |
b0a3f2bc LP |
1061 | |
1062 | /* Check whether this is a /proc, /sys or /dev file or char device */ | |
e8da24a6 LP |
1063 | if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) |
1064 | return -EEXIST; | |
b0a3f2bc | 1065 | |
e8da24a6 LP |
1066 | r = fd; |
1067 | fd = -1; | |
b0a3f2bc LP |
1068 | |
1069 | return r; | |
1070 | } | |
1071 | ||
36078102 | 1072 | static int usbffs_address_create(const char *path) { |
60252446 PS |
1073 | _cleanup_close_ int fd = -1; |
1074 | struct stat st; | |
e8da24a6 | 1075 | int r; |
60252446 PS |
1076 | |
1077 | assert(path); | |
60252446 PS |
1078 | |
1079 | fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW); | |
1080 | if (fd < 0) | |
1081 | return -errno; | |
1082 | ||
1083 | if (fstat(fd, &st) < 0) | |
1084 | return -errno; | |
1085 | ||
1086 | /* Check whether this is a regular file (ffs endpoint)*/ | |
1087 | if (!S_ISREG(st.st_mode)) | |
1088 | return -EEXIST; | |
1089 | ||
e8da24a6 | 1090 | r = fd; |
60252446 PS |
1091 | fd = -1; |
1092 | ||
e8da24a6 | 1093 | return r; |
60252446 PS |
1094 | } |
1095 | ||
916abb21 LP |
1096 | static int mq_address_create( |
1097 | const char *path, | |
1098 | mode_t mq_mode, | |
1099 | long maxmsg, | |
e8da24a6 | 1100 | long msgsize) { |
916abb21 | 1101 | |
e8da24a6 | 1102 | _cleanup_close_ int fd = -1; |
916abb21 LP |
1103 | struct stat st; |
1104 | mode_t old_mask; | |
1105 | struct mq_attr _attr, *attr = NULL; | |
e8da24a6 | 1106 | int r; |
916abb21 LP |
1107 | |
1108 | assert(path); | |
916abb21 LP |
1109 | |
1110 | if (maxmsg > 0 && msgsize > 0) { | |
e8da24a6 LP |
1111 | _attr = (struct mq_attr) { |
1112 | .mq_flags = O_NONBLOCK, | |
1113 | .mq_maxmsg = maxmsg, | |
1114 | .mq_msgsize = msgsize, | |
1115 | }; | |
916abb21 LP |
1116 | attr = &_attr; |
1117 | } | |
1118 | ||
1119 | /* Enforce the right access mode for the mq */ | |
1120 | old_mask = umask(~ mq_mode); | |
1121 | ||
1122 | /* Include the original umask in our mask */ | |
e8da24a6 | 1123 | (void) umask(~mq_mode | old_mask); |
916abb21 | 1124 | fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr); |
e8da24a6 | 1125 | (void) umask(old_mask); |
916abb21 | 1126 | |
e8da24a6 LP |
1127 | if (fd < 0) |
1128 | return -errno; | |
916abb21 | 1129 | |
e8da24a6 LP |
1130 | if (fstat(fd, &st) < 0) |
1131 | return -errno; | |
916abb21 LP |
1132 | |
1133 | if ((st.st_mode & 0777) != (mq_mode & ~old_mask) || | |
1134 | st.st_uid != getuid() || | |
e8da24a6 LP |
1135 | st.st_gid != getgid()) |
1136 | return -EEXIST; | |
916abb21 | 1137 | |
e8da24a6 LP |
1138 | r = fd; |
1139 | fd = -1; | |
916abb21 | 1140 | |
916abb21 LP |
1141 | return r; |
1142 | } | |
1143 | ||
811ba7a0 LP |
1144 | static int socket_symlink(Socket *s) { |
1145 | const char *p; | |
1146 | char **i; | |
1147 | ||
1148 | assert(s); | |
1149 | ||
1150 | p = socket_find_symlink_target(s); | |
1151 | if (!p) | |
1152 | return 0; | |
1153 | ||
1154 | STRV_FOREACH(i, s->symlinks) | |
43b133b4 | 1155 | symlink_label(p, *i); |
811ba7a0 LP |
1156 | |
1157 | return 0; | |
1158 | } | |
1159 | ||
36078102 | 1160 | static int usbffs_write_descs(int fd, Service *s) { |
6b7e5923 PS |
1161 | int r; |
1162 | ||
1163 | if (!s->usb_function_descriptors || !s->usb_function_strings) | |
1164 | return -EINVAL; | |
1165 | ||
1166 | r = copy_file_fd(s->usb_function_descriptors, fd, false); | |
1167 | if (r < 0) | |
e8da24a6 | 1168 | return r; |
6b7e5923 | 1169 | |
e8da24a6 | 1170 | return copy_file_fd(s->usb_function_strings, fd, false); |
6b7e5923 PS |
1171 | } |
1172 | ||
36078102 | 1173 | static int usbffs_select_ep(const struct dirent *d) { |
60252446 PS |
1174 | return d->d_name[0] != '.' && !streq(d->d_name, "ep0"); |
1175 | } | |
1176 | ||
36078102 | 1177 | static int usbffs_dispatch_eps(SocketPort *p) { |
60252446 | 1178 | _cleanup_free_ struct dirent **ent = NULL; |
60252446 | 1179 | _cleanup_free_ char *path = NULL; |
36078102 | 1180 | int r, i, n, k; |
60252446 | 1181 | |
5f311f8c LP |
1182 | path = dirname_malloc(p->path); |
1183 | if (!path) | |
1184 | return -ENOMEM; | |
60252446 | 1185 | |
36078102 | 1186 | r = scandir(path, &ent, usbffs_select_ep, alphasort); |
60252446 PS |
1187 | if (r < 0) |
1188 | return -errno; | |
1189 | ||
1190 | n = r; | |
1191 | p->auxiliary_fds = new(int, n); | |
1192 | if (!p->auxiliary_fds) | |
1193 | return -ENOMEM; | |
1194 | ||
1195 | p->n_auxiliary_fds = n; | |
1196 | ||
1197 | k = 0; | |
1198 | for (i = 0; i < n; ++i) { | |
1199 | _cleanup_free_ char *ep = NULL; | |
1200 | ||
1201 | ep = path_make_absolute(ent[i]->d_name, path); | |
1202 | if (!ep) | |
1203 | return -ENOMEM; | |
1204 | ||
1205 | path_kill_slashes(ep); | |
1206 | ||
36078102 | 1207 | r = usbffs_address_create(ep); |
60252446 PS |
1208 | if (r < 0) |
1209 | goto fail; | |
1210 | ||
e8da24a6 LP |
1211 | p->auxiliary_fds[k] = r; |
1212 | ||
60252446 PS |
1213 | ++k; |
1214 | free(ent[i]); | |
1215 | } | |
1216 | ||
1217 | return r; | |
1218 | ||
1219 | fail: | |
e8da24a6 | 1220 | close_many(p->auxiliary_fds, k); |
60252446 PS |
1221 | p->auxiliary_fds = mfree(p->auxiliary_fds); |
1222 | p->n_auxiliary_fds = 0; | |
1223 | ||
1224 | return r; | |
1225 | } | |
1226 | ||
034c6ed7 | 1227 | static int socket_open_fds(Socket *s) { |
710a6b50 LP |
1228 | _cleanup_(mac_selinux_freep) char *label = NULL; |
1229 | bool know_label = false; | |
83c60c9f LP |
1230 | SocketPort *p; |
1231 | int r; | |
1232 | ||
1233 | assert(s); | |
1234 | ||
034c6ed7 | 1235 | LIST_FOREACH(port, p, s->ports) { |
83c60c9f | 1236 | |
034c6ed7 LP |
1237 | if (p->fd >= 0) |
1238 | continue; | |
83c60c9f | 1239 | |
00411a13 LP |
1240 | switch (p->type) { |
1241 | ||
1242 | case SOCKET_SOCKET: | |
049f8642 | 1243 | |
7f416dae LP |
1244 | if (!know_label) { |
1245 | /* Figure out label, if we don't it know | |
1246 | * yet. We do it once, for the first | |
1247 | * socket where we need this and | |
1248 | * remember it for the rest. */ | |
1249 | ||
1250 | if (s->selinux_context_from_net) { | |
1251 | /* Get it from the network label */ | |
1252 | ||
1253 | r = mac_selinux_get_our_label(&label); | |
75514a70 | 1254 | if (r < 0 && r != -EOPNOTSUPP) |
7f416dae | 1255 | goto rollback; |
049f8642 | 1256 | |
7f416dae LP |
1257 | } else { |
1258 | /* Get it from the executable we are about to start */ | |
1259 | ||
1260 | r = socket_instantiate_service(s); | |
1261 | if (r < 0) | |
1262 | goto rollback; | |
1263 | ||
1264 | if (UNIT_ISSET(s->service) && | |
1265 | SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) { | |
1266 | r = mac_selinux_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label); | |
75514a70 | 1267 | if (r < 0 && r != -EPERM && r != -EOPNOTSUPP) |
7f416dae LP |
1268 | goto rollback; |
1269 | } | |
189583d7 | 1270 | } |
049f8642 LP |
1271 | |
1272 | know_label = true; | |
1273 | } | |
1274 | ||
74bb646e SS |
1275 | /* Apply the socket protocol */ |
1276 | switch(p->address.type) { | |
1277 | case SOCK_STREAM: | |
1278 | case SOCK_SEQPACKET: | |
1279 | if (p->socket->socket_protocol == IPPROTO_SCTP) | |
1280 | p->address.protocol = p->socket->socket_protocol; | |
1281 | break; | |
1282 | case SOCK_DGRAM: | |
1283 | if (p->socket->socket_protocol == IPPROTO_UDPLITE) | |
1284 | p->address.protocol = p->socket->socket_protocol; | |
1285 | break; | |
1286 | } | |
1287 | ||
175a3d25 LP |
1288 | r = socket_address_listen( |
1289 | &p->address, | |
1290 | SOCK_CLOEXEC|SOCK_NONBLOCK, | |
1291 | s->backlog, | |
1292 | s->bind_ipv6_only, | |
1293 | s->bind_to_device, | |
54255c64 | 1294 | s->reuse_port, |
175a3d25 LP |
1295 | s->free_bind, |
1296 | s->transparent, | |
1297 | s->directory_mode, | |
1298 | s->socket_mode, | |
1299 | label); | |
1300 | if (r < 0) | |
83c60c9f LP |
1301 | goto rollback; |
1302 | ||
175a3d25 | 1303 | p->fd = r; |
4fd5948e | 1304 | socket_apply_socket_options(s, p->fd); |
811ba7a0 | 1305 | socket_symlink(s); |
00411a13 | 1306 | break; |
4fd5948e | 1307 | |
00411a13 | 1308 | case SOCKET_SPECIAL: |
b0a3f2bc | 1309 | |
55301ec0 | 1310 | p->fd = special_address_create(p->path, s->writable); |
e8da24a6 LP |
1311 | if (p->fd < 0) { |
1312 | r = p->fd; | |
b0a3f2bc | 1313 | goto rollback; |
e8da24a6 | 1314 | } |
00411a13 | 1315 | break; |
b0a3f2bc | 1316 | |
00411a13 | 1317 | case SOCKET_FIFO: |
83c60c9f | 1318 | |
e8da24a6 | 1319 | p->fd = fifo_address_create( |
175a3d25 LP |
1320 | p->path, |
1321 | s->directory_mode, | |
e8da24a6 LP |
1322 | s->socket_mode); |
1323 | if (p->fd < 0) { | |
1324 | r = p->fd; | |
83c60c9f | 1325 | goto rollback; |
e8da24a6 | 1326 | } |
83c60c9f | 1327 | |
b15bdda8 | 1328 | socket_apply_fifo_options(s, p->fd); |
811ba7a0 | 1329 | socket_symlink(s); |
00411a13 | 1330 | break; |
811ba7a0 | 1331 | |
00411a13 | 1332 | case SOCKET_MQUEUE: |
83c60c9f | 1333 | |
e8da24a6 | 1334 | p->fd = mq_address_create( |
175a3d25 LP |
1335 | p->path, |
1336 | s->socket_mode, | |
1337 | s->mq_maxmsg, | |
e8da24a6 LP |
1338 | s->mq_msgsize); |
1339 | if (p->fd < 0) { | |
1340 | r = p->fd; | |
916abb21 | 1341 | goto rollback; |
e8da24a6 | 1342 | } |
00411a13 | 1343 | break; |
e8da24a6 | 1344 | |
00411a13 | 1345 | case SOCKET_USB_FUNCTION: |
27a6ea91 GB |
1346 | { |
1347 | _cleanup_free_ char *ep = NULL; | |
60252446 | 1348 | |
27a6ea91 GB |
1349 | ep = path_make_absolute("ep0", p->path); |
1350 | ||
1351 | p->fd = usbffs_address_create(ep); | |
e8da24a6 LP |
1352 | if (p->fd < 0) { |
1353 | r = p->fd; | |
60252446 | 1354 | goto rollback; |
e8da24a6 | 1355 | } |
60252446 | 1356 | |
36078102 | 1357 | r = usbffs_write_descs(p->fd, SERVICE(UNIT_DEREF(s->service))); |
6b7e5923 PS |
1358 | if (r < 0) |
1359 | goto rollback; | |
1360 | ||
36078102 | 1361 | r = usbffs_dispatch_eps(p); |
60252446 PS |
1362 | if (r < 0) |
1363 | goto rollback; | |
00411a13 LP |
1364 | |
1365 | break; | |
27a6ea91 | 1366 | } |
00411a13 | 1367 | default: |
b15bdda8 | 1368 | assert_not_reached("Unknown port type"); |
00411a13 | 1369 | } |
034c6ed7 LP |
1370 | } |
1371 | ||
1372 | return 0; | |
1373 | ||
1374 | rollback: | |
1375 | socket_close_fds(s); | |
1376 | return r; | |
1377 | } | |
1378 | ||
1379 | static void socket_unwatch_fds(Socket *s) { | |
1380 | SocketPort *p; | |
718db961 | 1381 | int r; |
9152c765 | 1382 | |
034c6ed7 LP |
1383 | assert(s); |
1384 | ||
1385 | LIST_FOREACH(port, p, s->ports) { | |
1386 | if (p->fd < 0) | |
1387 | continue; | |
1388 | ||
a4152e3f LP |
1389 | if (!p->event_source) |
1390 | continue; | |
1391 | ||
1392 | r = sd_event_source_set_enabled(p->event_source, SD_EVENT_OFF); | |
1393 | if (r < 0) | |
f2341e0a | 1394 | log_unit_debug_errno(UNIT(s), r, "Failed to disable event source: %m"); |
83c60c9f | 1395 | } |
034c6ed7 LP |
1396 | } |
1397 | ||
1398 | static int socket_watch_fds(Socket *s) { | |
1399 | SocketPort *p; | |
1400 | int r; | |
1401 | ||
1402 | assert(s); | |
83c60c9f | 1403 | |
034c6ed7 LP |
1404 | LIST_FOREACH(port, p, s->ports) { |
1405 | if (p->fd < 0) | |
1406 | continue; | |
1407 | ||
cbf60d0a | 1408 | if (p->event_source) { |
718db961 | 1409 | r = sd_event_source_set_enabled(p->event_source, SD_EVENT_ON); |
cbf60d0a LP |
1410 | if (r < 0) |
1411 | goto fail; | |
1412 | } else { | |
151b9b96 | 1413 | r = sd_event_add_io(UNIT(s)->manager->event, &p->event_source, p->fd, EPOLLIN, socket_dispatch_io, p); |
cbf60d0a LP |
1414 | if (r < 0) |
1415 | goto fail; | |
4f2d528d | 1416 | |
cbf60d0a | 1417 | (void) sd_event_source_set_description(p->event_source, "socket-port-io"); |
718db961 | 1418 | } |
034c6ed7 | 1419 | } |
83c60c9f | 1420 | |
542563ba | 1421 | return 0; |
83c60c9f | 1422 | |
034c6ed7 | 1423 | fail: |
cbf60d0a | 1424 | log_unit_warning_errno(UNIT(s), r, "Failed to watch listening fds: %m"); |
034c6ed7 LP |
1425 | socket_unwatch_fds(s); |
1426 | return r; | |
1427 | } | |
1428 | ||
1429 | static void socket_set_state(Socket *s, SocketState state) { | |
1430 | SocketState old_state; | |
1431 | assert(s); | |
1432 | ||
1433 | old_state = s->state; | |
1434 | s->state = state; | |
1435 | ||
bd1fe7c7 LP |
1436 | if (!IN_SET(state, |
1437 | SOCKET_START_PRE, | |
3900e5fd | 1438 | SOCKET_START_CHOWN, |
bd1fe7c7 LP |
1439 | SOCKET_START_POST, |
1440 | SOCKET_STOP_PRE, | |
1441 | SOCKET_STOP_PRE_SIGTERM, | |
1442 | SOCKET_STOP_PRE_SIGKILL, | |
1443 | SOCKET_STOP_POST, | |
1444 | SOCKET_FINAL_SIGTERM, | |
1445 | SOCKET_FINAL_SIGKILL)) { | |
718db961 LP |
1446 | |
1447 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); | |
5e94833f | 1448 | socket_unwatch_control_pid(s); |
034c6ed7 | 1449 | s->control_command = NULL; |
a16e1123 | 1450 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; |
e537352b | 1451 | } |
034c6ed7 | 1452 | |
a16e1123 LP |
1453 | if (state != SOCKET_LISTENING) |
1454 | socket_unwatch_fds(s); | |
1455 | ||
bd1fe7c7 | 1456 | if (!IN_SET(state, |
3900e5fd | 1457 | SOCKET_START_CHOWN, |
bd1fe7c7 LP |
1458 | SOCKET_START_POST, |
1459 | SOCKET_LISTENING, | |
1460 | SOCKET_RUNNING, | |
1461 | SOCKET_STOP_PRE, | |
1462 | SOCKET_STOP_PRE_SIGTERM, | |
1463 | SOCKET_STOP_PRE_SIGKILL)) | |
034c6ed7 LP |
1464 | socket_close_fds(s); |
1465 | ||
e537352b | 1466 | if (state != old_state) |
f2341e0a | 1467 | log_unit_debug(UNIT(s), "Changed %s -> %s", socket_state_to_string(old_state), socket_state_to_string(state)); |
acbb0225 | 1468 | |
e2f3b44c | 1469 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); |
034c6ed7 LP |
1470 | } |
1471 | ||
be847e82 | 1472 | static int socket_coldplug(Unit *u) { |
a16e1123 LP |
1473 | Socket *s = SOCKET(u); |
1474 | int r; | |
1475 | ||
1476 | assert(s); | |
1477 | assert(s->state == SOCKET_DEAD); | |
1478 | ||
e821075a LP |
1479 | if (s->deserialized_state == s->state) |
1480 | return 0; | |
a16e1123 | 1481 | |
c386f588 LP |
1482 | if (s->control_pid > 0 && |
1483 | pid_is_unwaited(s->control_pid) && | |
1484 | IN_SET(s->deserialized_state, | |
3900e5fd LP |
1485 | SOCKET_START_PRE, |
1486 | SOCKET_START_CHOWN, | |
1487 | SOCKET_START_POST, | |
1488 | SOCKET_STOP_PRE, | |
1489 | SOCKET_STOP_PRE_SIGTERM, | |
1490 | SOCKET_STOP_PRE_SIGKILL, | |
1491 | SOCKET_STOP_POST, | |
1492 | SOCKET_FINAL_SIGTERM, | |
1493 | SOCKET_FINAL_SIGKILL)) { | |
a16e1123 | 1494 | |
e821075a LP |
1495 | r = unit_watch_pid(UNIT(s), s->control_pid); |
1496 | if (r < 0) | |
1497 | return r; | |
a16e1123 | 1498 | |
36c16a7c | 1499 | r = socket_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_usec)); |
e821075a LP |
1500 | if (r < 0) |
1501 | return r; | |
1502 | } | |
a16e1123 | 1503 | |
3900e5fd LP |
1504 | if (IN_SET(s->deserialized_state, |
1505 | SOCKET_START_CHOWN, | |
1506 | SOCKET_START_POST, | |
1507 | SOCKET_LISTENING, | |
1508 | SOCKET_RUNNING, | |
1509 | SOCKET_STOP_PRE, | |
1510 | SOCKET_STOP_PRE_SIGTERM, | |
1511 | SOCKET_STOP_PRE_SIGKILL)) { | |
36c16a7c | 1512 | |
e821075a LP |
1513 | r = socket_open_fds(s); |
1514 | if (r < 0) | |
1515 | return r; | |
1516 | } | |
a16e1123 | 1517 | |
e821075a LP |
1518 | if (s->deserialized_state == SOCKET_LISTENING) { |
1519 | r = socket_watch_fds(s); | |
1520 | if (r < 0) | |
1521 | return r; | |
a16e1123 LP |
1522 | } |
1523 | ||
e821075a | 1524 | socket_set_state(s, s->deserialized_state); |
a16e1123 LP |
1525 | return 0; |
1526 | } | |
1527 | ||
e537352b | 1528 | static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { |
3900e5fd | 1529 | _cleanup_free_ char **argv = NULL; |
034c6ed7 LP |
1530 | pid_t pid; |
1531 | int r; | |
9fa95f85 DM |
1532 | ExecParameters exec_params = { |
1533 | .apply_permissions = true, | |
1534 | .apply_chroot = true, | |
1535 | .apply_tty_stdin = true, | |
a34ceba6 LP |
1536 | .stdin_fd = -1, |
1537 | .stdout_fd = -1, | |
1538 | .stderr_fd = -1, | |
9fa95f85 | 1539 | }; |
034c6ed7 LP |
1540 | |
1541 | assert(s); | |
1542 | assert(c); | |
1543 | assert(_pid); | |
1544 | ||
5ad096b3 LP |
1545 | (void) unit_realize_cgroup(UNIT(s)); |
1546 | if (s->reset_cpu_usage) { | |
1547 | (void) unit_reset_cpu_usage(UNIT(s)); | |
1548 | s->reset_cpu_usage = false; | |
1549 | } | |
4ad49000 | 1550 | |
613b411c LP |
1551 | r = unit_setup_exec_runtime(UNIT(s)); |
1552 | if (r < 0) | |
36c16a7c | 1553 | return r; |
613b411c | 1554 | |
36c16a7c | 1555 | r = socket_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
36697dc0 | 1556 | if (r < 0) |
36c16a7c | 1557 | return r; |
034c6ed7 | 1558 | |
19f6d710 LP |
1559 | r = unit_full_printf_strv(UNIT(s), c->argv, &argv); |
1560 | if (r < 0) | |
36c16a7c | 1561 | return r; |
9e2f7c11 | 1562 | |
9fa95f85 DM |
1563 | exec_params.argv = argv; |
1564 | exec_params.environment = UNIT(s)->manager->environment; | |
1565 | exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn; | |
1566 | exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported; | |
1567 | exec_params.cgroup_path = UNIT(s)->cgroup_path; | |
a931ad47 | 1568 | exec_params.cgroup_delegate = s->cgroup_context.delegate; |
9fa95f85 | 1569 | exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager); |
9fa95f85 | 1570 | |
f2341e0a LP |
1571 | r = exec_spawn(UNIT(s), |
1572 | c, | |
9e2f7c11 | 1573 | &s->exec_context, |
9fa95f85 | 1574 | &exec_params, |
613b411c | 1575 | s->exec_runtime, |
9e2f7c11 | 1576 | &pid); |
cee288ad | 1577 | if (r < 0) |
36c16a7c | 1578 | return r; |
9e2f7c11 | 1579 | |
3900e5fd | 1580 | r = unit_watch_pid(UNIT(s), pid); |
9e2f7c11 | 1581 | if (r < 0) |
3900e5fd | 1582 | /* FIXME: we need to do something here */ |
36c16a7c | 1583 | return r; |
034c6ed7 | 1584 | |
3900e5fd LP |
1585 | *_pid = pid; |
1586 | return 0; | |
3900e5fd LP |
1587 | } |
1588 | ||
1589 | static int socket_chown(Socket *s, pid_t *_pid) { | |
1590 | pid_t pid; | |
1591 | int r; | |
1592 | ||
36c16a7c | 1593 | r = socket_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
3900e5fd LP |
1594 | if (r < 0) |
1595 | goto fail; | |
1596 | ||
1597 | /* We have to resolve the user names out-of-process, hence | |
1598 | * let's fork here. It's messy, but well, what can we do? */ | |
1599 | ||
1600 | pid = fork(); | |
1601 | if (pid < 0) | |
1602 | return -errno; | |
1603 | ||
1604 | if (pid == 0) { | |
1605 | SocketPort *p; | |
fed1e721 LP |
1606 | uid_t uid = UID_INVALID; |
1607 | gid_t gid = GID_INVALID; | |
3900e5fd LP |
1608 | int ret; |
1609 | ||
ce30c8dc LP |
1610 | (void) default_signals(SIGNALS_CRASH_HANDLER, SIGNALS_IGNORE, -1); |
1611 | (void) ignore_signals(SIGPIPE, -1); | |
3900e5fd LP |
1612 | log_forget_fds(); |
1613 | ||
1614 | if (!isempty(s->user)) { | |
1615 | const char *user = s->user; | |
1616 | ||
1617 | r = get_user_creds(&user, &uid, &gid, NULL, NULL); | |
1618 | if (r < 0) { | |
1619 | ret = EXIT_USER; | |
1620 | goto fail_child; | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | if (!isempty(s->group)) { | |
1625 | const char *group = s->group; | |
1626 | ||
1627 | r = get_group_creds(&group, &gid); | |
1628 | if (r < 0) { | |
1629 | ret = EXIT_GROUP; | |
1630 | goto fail_child; | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | LIST_FOREACH(port, p, s->ports) { | |
e5a1c18d | 1635 | const char *path = NULL; |
3900e5fd LP |
1636 | |
1637 | if (p->type == SOCKET_SOCKET) | |
1638 | path = socket_address_get_path(&p->address); | |
1639 | else if (p->type == SOCKET_FIFO) | |
1640 | path = p->path; | |
1641 | ||
1642 | if (!path) | |
1643 | continue; | |
1644 | ||
1645 | if (chown(path, uid, gid) < 0) { | |
1646 | r = -errno; | |
1647 | ret = EXIT_CHOWN; | |
1648 | goto fail_child; | |
1649 | } | |
1650 | } | |
1651 | ||
1652 | _exit(0); | |
1653 | ||
1654 | fail_child: | |
1655 | log_open(); | |
da927ba9 | 1656 | log_error_errno(r, "Failed to chown socket at step %s: %m", exit_status_to_string(ret, EXIT_STATUS_SYSTEMD)); |
3900e5fd LP |
1657 | |
1658 | _exit(ret); | |
1659 | } | |
1660 | ||
718db961 LP |
1661 | r = unit_watch_pid(UNIT(s), pid); |
1662 | if (r < 0) | |
034c6ed7 | 1663 | goto fail; |
83c60c9f | 1664 | |
034c6ed7 | 1665 | *_pid = pid; |
034c6ed7 LP |
1666 | return 0; |
1667 | ||
1668 | fail: | |
718db961 | 1669 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
83c60c9f | 1670 | return r; |
542563ba LP |
1671 | } |
1672 | ||
cfc4eb4c | 1673 | static void socket_enter_dead(Socket *s, SocketResult f) { |
034c6ed7 LP |
1674 | assert(s); |
1675 | ||
cfc4eb4c LP |
1676 | if (f != SOCKET_SUCCESS) |
1677 | s->result = f; | |
034c6ed7 | 1678 | |
613b411c LP |
1679 | exec_runtime_destroy(s->exec_runtime); |
1680 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
1681 | ||
e66cf1a3 LP |
1682 | exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager)); |
1683 | ||
cfc4eb4c | 1684 | socket_set_state(s, s->result != SOCKET_SUCCESS ? SOCKET_FAILED : SOCKET_DEAD); |
034c6ed7 LP |
1685 | } |
1686 | ||
cfc4eb4c | 1687 | static void socket_enter_signal(Socket *s, SocketState state, SocketResult f); |
80876c20 | 1688 | |
cfc4eb4c | 1689 | static void socket_enter_stop_post(Socket *s, SocketResult f) { |
034c6ed7 LP |
1690 | int r; |
1691 | assert(s); | |
1692 | ||
cfc4eb4c LP |
1693 | if (f != SOCKET_SUCCESS) |
1694 | s->result = f; | |
034c6ed7 | 1695 | |
5e94833f | 1696 | socket_unwatch_control_pid(s); |
a16e1123 | 1697 | s->control_command_id = SOCKET_EXEC_STOP_POST; |
3900e5fd | 1698 | s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST]; |
a16e1123 | 1699 | |
3900e5fd LP |
1700 | if (s->control_command) { |
1701 | r = socket_spawn(s, s->control_command, &s->control_pid); | |
1702 | if (r < 0) | |
034c6ed7 LP |
1703 | goto fail; |
1704 | ||
80876c20 LP |
1705 | socket_set_state(s, SOCKET_STOP_POST); |
1706 | } else | |
cfc4eb4c | 1707 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_SUCCESS); |
034c6ed7 LP |
1708 | |
1709 | return; | |
1710 | ||
1711 | fail: | |
f2341e0a | 1712 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m"); |
cfc4eb4c | 1713 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1714 | } |
1715 | ||
cfc4eb4c | 1716 | static void socket_enter_signal(Socket *s, SocketState state, SocketResult f) { |
034c6ed7 LP |
1717 | int r; |
1718 | ||
1719 | assert(s); | |
1720 | ||
cfc4eb4c LP |
1721 | if (f != SOCKET_SUCCESS) |
1722 | s->result = f; | |
034c6ed7 | 1723 | |
cd2086fe LP |
1724 | r = unit_kill_context( |
1725 | UNIT(s), | |
1726 | &s->kill_context, | |
db2cb23b UTL |
1727 | (state != SOCKET_STOP_PRE_SIGTERM && state != SOCKET_FINAL_SIGTERM) ? |
1728 | KILL_KILL : KILL_TERMINATE, | |
cd2086fe LP |
1729 | -1, |
1730 | s->control_pid, | |
1731 | false); | |
1732 | if (r < 0) | |
1733 | goto fail; | |
034c6ed7 | 1734 | |
cd2086fe | 1735 | if (r > 0) { |
36c16a7c | 1736 | r = socket_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
36697dc0 | 1737 | if (r < 0) |
80876c20 | 1738 | goto fail; |
d6ea93e3 | 1739 | |
80876c20 | 1740 | socket_set_state(s, state); |
ac84d1fb LP |
1741 | } else if (state == SOCKET_STOP_PRE_SIGTERM) |
1742 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_SUCCESS); | |
1743 | else if (state == SOCKET_STOP_PRE_SIGKILL) | |
cfc4eb4c | 1744 | socket_enter_stop_post(s, SOCKET_SUCCESS); |
ac84d1fb LP |
1745 | else if (state == SOCKET_FINAL_SIGTERM) |
1746 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_SUCCESS); | |
80876c20 | 1747 | else |
cfc4eb4c | 1748 | socket_enter_dead(s, SOCKET_SUCCESS); |
034c6ed7 LP |
1749 | |
1750 | return; | |
1751 | ||
1752 | fail: | |
f2341e0a | 1753 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
034c6ed7 LP |
1754 | |
1755 | if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL) | |
cfc4eb4c | 1756 | socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 1757 | else |
cfc4eb4c | 1758 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1759 | } |
1760 | ||
cfc4eb4c | 1761 | static void socket_enter_stop_pre(Socket *s, SocketResult f) { |
034c6ed7 LP |
1762 | int r; |
1763 | assert(s); | |
1764 | ||
cfc4eb4c LP |
1765 | if (f != SOCKET_SUCCESS) |
1766 | s->result = f; | |
034c6ed7 | 1767 | |
5e94833f | 1768 | socket_unwatch_control_pid(s); |
a16e1123 | 1769 | s->control_command_id = SOCKET_EXEC_STOP_PRE; |
3900e5fd | 1770 | s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE]; |
a16e1123 | 1771 | |
3900e5fd LP |
1772 | if (s->control_command) { |
1773 | r = socket_spawn(s, s->control_command, &s->control_pid); | |
1774 | if (r < 0) | |
034c6ed7 LP |
1775 | goto fail; |
1776 | ||
80876c20 LP |
1777 | socket_set_state(s, SOCKET_STOP_PRE); |
1778 | } else | |
cfc4eb4c | 1779 | socket_enter_stop_post(s, SOCKET_SUCCESS); |
034c6ed7 LP |
1780 | |
1781 | return; | |
1782 | ||
1783 | fail: | |
f2341e0a | 1784 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-pre' task: %m"); |
cfc4eb4c | 1785 | socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1786 | } |
1787 | ||
e9af15c3 LP |
1788 | static void socket_enter_listening(Socket *s) { |
1789 | int r; | |
1790 | assert(s); | |
1791 | ||
cfc4eb4c LP |
1792 | r = socket_watch_fds(s); |
1793 | if (r < 0) { | |
f2341e0a | 1794 | log_unit_warning_errno(UNIT(s), r, "Failed to watch sockets: %m"); |
e9af15c3 LP |
1795 | goto fail; |
1796 | } | |
1797 | ||
1798 | socket_set_state(s, SOCKET_LISTENING); | |
1799 | return; | |
1800 | ||
1801 | fail: | |
cfc4eb4c | 1802 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
e9af15c3 LP |
1803 | } |
1804 | ||
034c6ed7 LP |
1805 | static void socket_enter_start_post(Socket *s) { |
1806 | int r; | |
1807 | assert(s); | |
1808 | ||
3900e5fd LP |
1809 | socket_unwatch_control_pid(s); |
1810 | s->control_command_id = SOCKET_EXEC_START_POST; | |
1811 | s->control_command = s->exec_command[SOCKET_EXEC_START_POST]; | |
1812 | ||
1813 | if (s->control_command) { | |
1814 | r = socket_spawn(s, s->control_command, &s->control_pid); | |
1815 | if (r < 0) { | |
f2341e0a | 1816 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m"); |
3900e5fd LP |
1817 | goto fail; |
1818 | } | |
1819 | ||
1820 | socket_set_state(s, SOCKET_START_POST); | |
1821 | } else | |
1822 | socket_enter_listening(s); | |
1823 | ||
1824 | return; | |
1825 | ||
1826 | fail: | |
1827 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); | |
1828 | } | |
1829 | ||
1830 | static void socket_enter_start_chown(Socket *s) { | |
1831 | int r; | |
1832 | ||
1833 | assert(s); | |
1834 | ||
cfc4eb4c LP |
1835 | r = socket_open_fds(s); |
1836 | if (r < 0) { | |
f2341e0a | 1837 | log_unit_warning_errno(UNIT(s), r, "Failed to listen on sockets: %m"); |
034c6ed7 LP |
1838 | goto fail; |
1839 | } | |
1840 | ||
3900e5fd | 1841 | if (!isempty(s->user) || !isempty(s->group)) { |
5e94833f | 1842 | |
3900e5fd LP |
1843 | socket_unwatch_control_pid(s); |
1844 | s->control_command_id = SOCKET_EXEC_START_CHOWN; | |
1845 | s->control_command = NULL; | |
a16e1123 | 1846 | |
3900e5fd | 1847 | r = socket_chown(s, &s->control_pid); |
cfc4eb4c | 1848 | if (r < 0) { |
f2341e0a | 1849 | log_unit_warning_errno(UNIT(s), r, "Failed to fork 'start-chown' task: %m"); |
034c6ed7 LP |
1850 | goto fail; |
1851 | } | |
1852 | ||
3900e5fd | 1853 | socket_set_state(s, SOCKET_START_CHOWN); |
80876c20 | 1854 | } else |
3900e5fd | 1855 | socket_enter_start_post(s); |
034c6ed7 LP |
1856 | |
1857 | return; | |
1858 | ||
1859 | fail: | |
cfc4eb4c | 1860 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1861 | } |
1862 | ||
1863 | static void socket_enter_start_pre(Socket *s) { | |
1864 | int r; | |
1865 | assert(s); | |
1866 | ||
5e94833f | 1867 | socket_unwatch_control_pid(s); |
a16e1123 | 1868 | s->control_command_id = SOCKET_EXEC_START_PRE; |
3900e5fd | 1869 | s->control_command = s->exec_command[SOCKET_EXEC_START_PRE]; |
a16e1123 | 1870 | |
3900e5fd | 1871 | if (s->control_command) { |
e821075a | 1872 | r = socket_spawn(s, s->control_command, &s->control_pid); |
3900e5fd | 1873 | if (r < 0) { |
f2341e0a | 1874 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m"); |
034c6ed7 | 1875 | goto fail; |
3900e5fd | 1876 | } |
034c6ed7 | 1877 | |
80876c20 LP |
1878 | socket_set_state(s, SOCKET_START_PRE); |
1879 | } else | |
3900e5fd | 1880 | socket_enter_start_chown(s); |
034c6ed7 LP |
1881 | |
1882 | return; | |
1883 | ||
1884 | fail: | |
cfc4eb4c | 1885 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
1886 | } |
1887 | ||
4f2d528d | 1888 | static void socket_enter_running(Socket *s, int cfd) { |
4afd3348 | 1889 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
034c6ed7 LP |
1890 | int r; |
1891 | ||
8b26cdbd LP |
1892 | /* Note that this call takes possession of the connection fd passed. It either has to assign it somewhere or |
1893 | * close it. */ | |
1894 | ||
034c6ed7 LP |
1895 | assert(s); |
1896 | ||
ba3e67a7 LP |
1897 | /* We don't take connections anymore if we are supposed to |
1898 | * shut down anyway */ | |
31afa0a4 | 1899 | if (unit_stop_pending(UNIT(s))) { |
e821075a | 1900 | |
f2341e0a | 1901 | log_unit_debug(UNIT(s), "Suppressing connection request since unit stop is scheduled."); |
5d909e3e | 1902 | |
7c610628 | 1903 | if (cfd >= 0) |
8b26cdbd | 1904 | cfd = safe_close(cfd); |
7c610628 LP |
1905 | else { |
1906 | /* Flush all sockets by closing and reopening them */ | |
1907 | socket_close_fds(s); | |
1908 | ||
16ac4014 LP |
1909 | r = socket_open_fds(s); |
1910 | if (r < 0) { | |
f2341e0a | 1911 | log_unit_warning_errno(UNIT(s), r, "Failed to listen on sockets: %m"); |
16ac4014 LP |
1912 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
1913 | return; | |
1914 | } | |
1915 | ||
1a710b43 MS |
1916 | r = socket_watch_fds(s); |
1917 | if (r < 0) { | |
f2341e0a | 1918 | log_unit_warning_errno(UNIT(s), r, "Failed to watch sockets: %m"); |
cfc4eb4c | 1919 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
7c610628 LP |
1920 | } |
1921 | } | |
1922 | ||
ba3e67a7 LP |
1923 | return; |
1924 | } | |
1925 | ||
8b26cdbd LP |
1926 | if (!ratelimit_test(&s->trigger_limit)) { |
1927 | safe_close(cfd); | |
1928 | log_unit_warning(UNIT(s), "Trigger limit hit, refusing further activation."); | |
1929 | socket_enter_stop_pre(s, SOCKET_FAILURE_TRIGGER_LIMIT_HIT); | |
1930 | return; | |
1931 | } | |
1932 | ||
4f2d528d | 1933 | if (cfd < 0) { |
57020a3a | 1934 | Iterator i; |
e821075a | 1935 | Unit *other; |
f976f3f6 | 1936 | bool pending = false; |
f976f3f6 LP |
1937 | |
1938 | /* If there's already a start pending don't bother to | |
1939 | * do anything */ | |
e821075a LP |
1940 | SET_FOREACH(other, UNIT(s)->dependencies[UNIT_TRIGGERS], i) |
1941 | if (unit_active_or_pending(other)) { | |
57020a3a LP |
1942 | pending = true; |
1943 | break; | |
1944 | } | |
f976f3f6 | 1945 | |
1a710b43 | 1946 | if (!pending) { |
640ace4a | 1947 | if (!UNIT_ISSET(s->service)) { |
f2341e0a | 1948 | log_unit_error(UNIT(s), "Service to activate vanished, refusing activation."); |
640ace4a LP |
1949 | r = -ENOENT; |
1950 | goto fail; | |
1951 | } | |
1952 | ||
4bd29fe5 | 1953 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT_DEREF(s->service), JOB_REPLACE, &error, NULL); |
1a710b43 | 1954 | if (r < 0) |
f976f3f6 | 1955 | goto fail; |
1a710b43 | 1956 | } |
4f2d528d LP |
1957 | |
1958 | socket_set_state(s, SOCKET_RUNNING); | |
1959 | } else { | |
e55001eb | 1960 | _cleanup_free_ char *prefix = NULL, *instance = NULL, *name = NULL; |
b15bdda8 | 1961 | Service *service; |
4f2d528d | 1962 | |
6cf6bbc2 | 1963 | if (s->n_connections >= s->max_connections) { |
8b26cdbd | 1964 | log_unit_warning(UNIT(s), "Too many incoming connections (%u), refusing connection attempt.", s->n_connections); |
03e334a1 | 1965 | safe_close(cfd); |
6cf6bbc2 LP |
1966 | return; |
1967 | } | |
1968 | ||
1a710b43 MS |
1969 | r = socket_instantiate_service(s); |
1970 | if (r < 0) | |
b15bdda8 LP |
1971 | goto fail; |
1972 | ||
1a710b43 MS |
1973 | r = instance_from_socket(cfd, s->n_accepted, &instance); |
1974 | if (r < 0) { | |
1975 | if (r != -ENOTCONN) | |
1976 | goto fail; | |
1977 | ||
1978 | /* ENOTCONN is legitimate if TCP RST was received. | |
1979 | * This connection is over, but the socket unit lives on. */ | |
8b26cdbd | 1980 | log_unit_debug(UNIT(s), "Got ENOTCONN on incoming socket, assuming aborted connection attempt, ignoring."); |
03e334a1 | 1981 | safe_close(cfd); |
1a710b43 MS |
1982 | return; |
1983 | } | |
4f2d528d | 1984 | |
7410616c LP |
1985 | r = unit_name_to_prefix(UNIT(s)->id, &prefix); |
1986 | if (r < 0) | |
4f2d528d | 1987 | goto fail; |
4f2d528d | 1988 | |
7410616c LP |
1989 | r = unit_name_build(prefix, instance, ".service", &name); |
1990 | if (r < 0) | |
b6dbbe1c | 1991 | goto fail; |
4f2d528d | 1992 | |
1a710b43 | 1993 | r = unit_add_name(UNIT_DEREF(s->service), name); |
e55001eb | 1994 | if (r < 0) |
4f2d528d | 1995 | goto fail; |
b15bdda8 | 1996 | |
57020a3a LP |
1997 | service = SERVICE(UNIT_DEREF(s->service)); |
1998 | unit_ref_unset(&s->service); | |
313cefa1 | 1999 | s->n_accepted++; |
4f2d528d | 2000 | |
1124fe6f | 2001 | UNIT(service)->no_gc = false; |
6c073082 | 2002 | |
b15bdda8 | 2003 | unit_choose_id(UNIT(service), name); |
b15bdda8 | 2004 | |
16115b0a | 2005 | r = service_set_socket_fd(service, cfd, s, s->selinux_context_from_net); |
1a710b43 | 2006 | if (r < 0) |
4f2d528d LP |
2007 | goto fail; |
2008 | ||
8b26cdbd | 2009 | cfd = -1; /* We passed ownership of the fd to the service now. Forget it here. */ |
313cefa1 | 2010 | s->n_connections++; |
6cf6bbc2 | 2011 | |
4bd29fe5 | 2012 | r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(service), JOB_REPLACE, &error, NULL); |
3e7a1f50 LP |
2013 | if (r < 0) { |
2014 | /* We failed to activate the new service, but it still exists. Let's make sure the service | |
2015 | * closes and forgets the connection fd again, immediately. */ | |
2016 | service_close_socket_fd(service); | |
4f2d528d | 2017 | goto fail; |
3e7a1f50 | 2018 | } |
c4e2ceae LP |
2019 | |
2020 | /* Notify clients about changed counters */ | |
2021 | unit_add_to_dbus_queue(UNIT(s)); | |
4f2d528d | 2022 | } |
034c6ed7 | 2023 | |
034c6ed7 LP |
2024 | return; |
2025 | ||
2026 | fail: | |
f2341e0a LP |
2027 | log_unit_warning(UNIT(s), "Failed to queue service startup job (Maybe the service file is missing or not a %s unit?): %s", |
2028 | cfd >= 0 ? "template" : "non-template", | |
718db961 | 2029 | bus_error_message(&error, r)); |
e821075a | 2030 | |
60089004 | 2031 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
03e334a1 | 2032 | safe_close(cfd); |
034c6ed7 LP |
2033 | } |
2034 | ||
cfc4eb4c | 2035 | static void socket_run_next(Socket *s) { |
034c6ed7 LP |
2036 | int r; |
2037 | ||
2038 | assert(s); | |
2039 | assert(s->control_command); | |
2040 | assert(s->control_command->command_next); | |
2041 | ||
5e94833f LP |
2042 | socket_unwatch_control_pid(s); |
2043 | ||
034c6ed7 LP |
2044 | s->control_command = s->control_command->command_next; |
2045 | ||
e821075a LP |
2046 | r = socket_spawn(s, s->control_command, &s->control_pid); |
2047 | if (r < 0) | |
034c6ed7 LP |
2048 | goto fail; |
2049 | ||
2050 | return; | |
2051 | ||
2052 | fail: | |
f2341e0a | 2053 | log_unit_warning_errno(UNIT(s), r, "Failed to run next task: %m"); |
80876c20 LP |
2054 | |
2055 | if (s->state == SOCKET_START_POST) | |
cfc4eb4c | 2056 | socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 2057 | else if (s->state == SOCKET_STOP_POST) |
cfc4eb4c | 2058 | socket_enter_dead(s, SOCKET_FAILURE_RESOURCES); |
034c6ed7 | 2059 | else |
cfc4eb4c | 2060 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES); |
034c6ed7 LP |
2061 | } |
2062 | ||
87f0e418 LP |
2063 | static int socket_start(Unit *u) { |
2064 | Socket *s = SOCKET(u); | |
83c60c9f LP |
2065 | |
2066 | assert(s); | |
2067 | ||
034c6ed7 LP |
2068 | /* We cannot fulfill this request right now, try again later |
2069 | * please! */ | |
3900e5fd LP |
2070 | if (IN_SET(s->state, |
2071 | SOCKET_STOP_PRE, | |
2072 | SOCKET_STOP_PRE_SIGKILL, | |
2073 | SOCKET_STOP_PRE_SIGTERM, | |
2074 | SOCKET_STOP_POST, | |
2075 | SOCKET_FINAL_SIGTERM, | |
2076 | SOCKET_FINAL_SIGKILL)) | |
034c6ed7 LP |
2077 | return -EAGAIN; |
2078 | ||
a4152e3f | 2079 | /* Already on it! */ |
3900e5fd LP |
2080 | if (IN_SET(s->state, |
2081 | SOCKET_START_PRE, | |
2082 | SOCKET_START_CHOWN, | |
2083 | SOCKET_START_POST)) | |
034c6ed7 | 2084 | return 0; |
83c60c9f | 2085 | |
034c6ed7 | 2086 | /* Cannot run this without the service being around */ |
9444b1f2 | 2087 | if (UNIT_ISSET(s->service)) { |
57020a3a LP |
2088 | Service *service; |
2089 | ||
2090 | service = SERVICE(UNIT_DEREF(s->service)); | |
2091 | ||
1124fe6f | 2092 | if (UNIT(service)->load_state != UNIT_LOADED) { |
f2341e0a | 2093 | log_unit_error(u, "Socket service %s not loaded, refusing.", UNIT(service)->id); |
4f2d528d | 2094 | return -ENOENT; |
4ac9236f | 2095 | } |
4f2d528d | 2096 | |
35b8ca3a | 2097 | /* If the service is already active we cannot start the |
4f2d528d | 2098 | * socket */ |
57020a3a LP |
2099 | if (service->state != SERVICE_DEAD && |
2100 | service->state != SERVICE_FAILED && | |
2101 | service->state != SERVICE_AUTO_RESTART) { | |
f2341e0a | 2102 | log_unit_error(u, "Socket service %s already active, refusing.", UNIT(service)->id); |
4f2d528d | 2103 | return -EBUSY; |
4ac9236f | 2104 | } |
4f2d528d | 2105 | } |
e537352b | 2106 | |
fdf20a31 | 2107 | assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED); |
83c60c9f | 2108 | |
cfc4eb4c | 2109 | s->result = SOCKET_SUCCESS; |
5ad096b3 LP |
2110 | s->reset_cpu_usage = true; |
2111 | ||
034c6ed7 | 2112 | socket_enter_start_pre(s); |
e821075a | 2113 | |
82a2b6bb | 2114 | return 1; |
034c6ed7 | 2115 | } |
83c60c9f | 2116 | |
87f0e418 LP |
2117 | static int socket_stop(Unit *u) { |
2118 | Socket *s = SOCKET(u); | |
034c6ed7 LP |
2119 | |
2120 | assert(s); | |
2121 | ||
e537352b | 2122 | /* Already on it */ |
3900e5fd LP |
2123 | if (IN_SET(s->state, |
2124 | SOCKET_STOP_PRE, | |
2125 | SOCKET_STOP_PRE_SIGTERM, | |
2126 | SOCKET_STOP_PRE_SIGKILL, | |
2127 | SOCKET_STOP_POST, | |
2128 | SOCKET_FINAL_SIGTERM, | |
2129 | SOCKET_FINAL_SIGKILL)) | |
e537352b LP |
2130 | return 0; |
2131 | ||
3f6c78dc LP |
2132 | /* If there's already something running we go directly into |
2133 | * kill mode. */ | |
3900e5fd LP |
2134 | if (IN_SET(s->state, |
2135 | SOCKET_START_PRE, | |
2136 | SOCKET_START_CHOWN, | |
2137 | SOCKET_START_POST)) { | |
cfc4eb4c | 2138 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_SUCCESS); |
3f6c78dc LP |
2139 | return -EAGAIN; |
2140 | } | |
2141 | ||
034c6ed7 | 2142 | assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING); |
83c60c9f | 2143 | |
cfc4eb4c | 2144 | socket_enter_stop_pre(s, SOCKET_SUCCESS); |
82a2b6bb | 2145 | return 1; |
542563ba LP |
2146 | } |
2147 | ||
a16e1123 LP |
2148 | static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { |
2149 | Socket *s = SOCKET(u); | |
2150 | SocketPort *p; | |
2151 | int r; | |
2152 | ||
2153 | assert(u); | |
2154 | assert(f); | |
2155 | assert(fds); | |
2156 | ||
2157 | unit_serialize_item(u, f, "state", socket_state_to_string(s->state)); | |
cfc4eb4c | 2158 | unit_serialize_item(u, f, "result", socket_result_to_string(s->result)); |
a16e1123 LP |
2159 | unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted); |
2160 | ||
2161 | if (s->control_pid > 0) | |
de0671ee | 2162 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
a16e1123 LP |
2163 | |
2164 | if (s->control_command_id >= 0) | |
2165 | unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id)); | |
2166 | ||
2167 | LIST_FOREACH(port, p, s->ports) { | |
2168 | int copy; | |
2169 | ||
2170 | if (p->fd < 0) | |
2171 | continue; | |
2172 | ||
613b411c LP |
2173 | copy = fdset_put_dup(fds, p->fd); |
2174 | if (copy < 0) | |
a16e1123 LP |
2175 | return copy; |
2176 | ||
2177 | if (p->type == SOCKET_SOCKET) { | |
613b411c | 2178 | _cleanup_free_ char *t = NULL; |
a16e1123 | 2179 | |
ee092817 LP |
2180 | r = socket_address_print(&p->address, &t); |
2181 | if (r < 0) | |
a16e1123 LP |
2182 | return r; |
2183 | ||
7a22745a LP |
2184 | if (socket_address_family(&p->address) == AF_NETLINK) |
2185 | unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t); | |
2186 | else | |
2187 | unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t); | |
613b411c | 2188 | |
b0a3f2bc LP |
2189 | } else if (p->type == SOCKET_SPECIAL) |
2190 | unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path); | |
ee092817 LP |
2191 | else if (p->type == SOCKET_MQUEUE) |
2192 | unit_serialize_item_format(u, f, "mqueue", "%i %s", copy, p->path); | |
60252446 PS |
2193 | else if (p->type == SOCKET_USB_FUNCTION) |
2194 | unit_serialize_item_format(u, f, "ffs", "%i %s", copy, p->path); | |
b0a3f2bc | 2195 | else { |
a16e1123 LP |
2196 | assert(p->type == SOCKET_FIFO); |
2197 | unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path); | |
2198 | } | |
2199 | } | |
2200 | ||
2201 | return 0; | |
2202 | } | |
2203 | ||
2204 | static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
2205 | Socket *s = SOCKET(u); | |
a16e1123 LP |
2206 | |
2207 | assert(u); | |
2208 | assert(key); | |
2209 | assert(value); | |
a16e1123 LP |
2210 | |
2211 | if (streq(key, "state")) { | |
2212 | SocketState state; | |
2213 | ||
ee092817 LP |
2214 | state = socket_state_from_string(value); |
2215 | if (state < 0) | |
f2341e0a | 2216 | log_unit_debug(u, "Failed to parse state value: %s", value); |
a16e1123 LP |
2217 | else |
2218 | s->deserialized_state = state; | |
cfc4eb4c LP |
2219 | } else if (streq(key, "result")) { |
2220 | SocketResult f; | |
a16e1123 | 2221 | |
cfc4eb4c LP |
2222 | f = socket_result_from_string(value); |
2223 | if (f < 0) | |
f2341e0a | 2224 | log_unit_debug(u, "Failed to parse result value: %s", value); |
cfc4eb4c LP |
2225 | else if (f != SOCKET_SUCCESS) |
2226 | s->result = f; | |
a16e1123 LP |
2227 | |
2228 | } else if (streq(key, "n-accepted")) { | |
2229 | unsigned k; | |
2230 | ||
e364ad06 | 2231 | if (safe_atou(value, &k) < 0) |
f2341e0a | 2232 | log_unit_debug(u, "Failed to parse n-accepted value: %s", value); |
a16e1123 LP |
2233 | else |
2234 | s->n_accepted += k; | |
2235 | } else if (streq(key, "control-pid")) { | |
5925dd3c | 2236 | pid_t pid; |
a16e1123 | 2237 | |
e364ad06 | 2238 | if (parse_pid(value, &pid) < 0) |
f2341e0a | 2239 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
a16e1123 | 2240 | else |
5925dd3c | 2241 | s->control_pid = pid; |
a16e1123 LP |
2242 | } else if (streq(key, "control-command")) { |
2243 | SocketExecCommand id; | |
2244 | ||
66870f90 ZJS |
2245 | id = socket_exec_command_from_string(value); |
2246 | if (id < 0) | |
f2341e0a | 2247 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
a16e1123 LP |
2248 | else { |
2249 | s->control_command_id = id; | |
2250 | s->control_command = s->exec_command[id]; | |
2251 | } | |
2252 | } else if (streq(key, "fifo")) { | |
2253 | int fd, skip = 0; | |
2254 | SocketPort *p; | |
2255 | ||
2256 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2257 | log_unit_debug(u, "Failed to parse fifo value: %s", value); |
a16e1123 LP |
2258 | else { |
2259 | ||
2260 | LIST_FOREACH(port, p, s->ports) | |
b0a3f2bc | 2261 | if (p->type == SOCKET_FIFO && |
c78e47a6 | 2262 | path_equal_or_files_same(p->path, value+skip)) |
b0a3f2bc LP |
2263 | break; |
2264 | ||
2265 | if (p) { | |
03e334a1 | 2266 | safe_close(p->fd); |
b0a3f2bc LP |
2267 | p->fd = fdset_remove(fds, fd); |
2268 | } | |
2269 | } | |
2270 | ||
2271 | } else if (streq(key, "special")) { | |
2272 | int fd, skip = 0; | |
2273 | SocketPort *p; | |
2274 | ||
2275 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2276 | log_unit_debug(u, "Failed to parse special value: %s", value); |
b0a3f2bc LP |
2277 | else { |
2278 | ||
2279 | LIST_FOREACH(port, p, s->ports) | |
2280 | if (p->type == SOCKET_SPECIAL && | |
c78e47a6 | 2281 | path_equal_or_files_same(p->path, value+skip)) |
a16e1123 LP |
2282 | break; |
2283 | ||
2284 | if (p) { | |
03e334a1 | 2285 | safe_close(p->fd); |
a16e1123 LP |
2286 | p->fd = fdset_remove(fds, fd); |
2287 | } | |
2288 | } | |
2289 | ||
ee092817 LP |
2290 | } else if (streq(key, "mqueue")) { |
2291 | int fd, skip = 0; | |
2292 | SocketPort *p; | |
2293 | ||
2294 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2295 | log_unit_debug(u, "Failed to parse mqueue value: %s", value); |
ee092817 LP |
2296 | else { |
2297 | ||
2298 | LIST_FOREACH(port, p, s->ports) | |
2299 | if (p->type == SOCKET_MQUEUE && | |
c78e47a6 | 2300 | streq(p->path, value+skip)) |
ee092817 LP |
2301 | break; |
2302 | ||
2303 | if (p) { | |
03e334a1 | 2304 | safe_close(p->fd); |
ee092817 LP |
2305 | p->fd = fdset_remove(fds, fd); |
2306 | } | |
2307 | } | |
2308 | ||
a16e1123 | 2309 | } else if (streq(key, "socket")) { |
27ca8d7a | 2310 | int fd, type, skip = 0; |
a16e1123 LP |
2311 | SocketPort *p; |
2312 | ||
27ca8d7a | 2313 | if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd)) |
f2341e0a | 2314 | log_unit_debug(u, "Failed to parse socket value: %s", value); |
a16e1123 LP |
2315 | else { |
2316 | ||
2317 | LIST_FOREACH(port, p, s->ports) | |
27ca8d7a | 2318 | if (socket_address_is(&p->address, value+skip, type)) |
a16e1123 LP |
2319 | break; |
2320 | ||
2321 | if (p) { | |
03e334a1 | 2322 | safe_close(p->fd); |
a16e1123 LP |
2323 | p->fd = fdset_remove(fds, fd); |
2324 | } | |
2325 | } | |
2326 | ||
7a22745a LP |
2327 | } else if (streq(key, "netlink")) { |
2328 | int fd, skip = 0; | |
2329 | SocketPort *p; | |
2330 | ||
2331 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
f2341e0a | 2332 | log_unit_debug(u, "Failed to parse socket value: %s", value); |
7a22745a LP |
2333 | else { |
2334 | ||
2335 | LIST_FOREACH(port, p, s->ports) | |
2336 | if (socket_address_is_netlink(&p->address, value+skip)) | |
2337 | break; | |
2338 | ||
2339 | if (p) { | |
03e334a1 | 2340 | safe_close(p->fd); |
7a22745a LP |
2341 | p->fd = fdset_remove(fds, fd); |
2342 | } | |
2343 | } | |
60252446 PS |
2344 | |
2345 | } else if (streq(key, "ffs")) { | |
2346 | int fd, skip = 0; | |
2347 | SocketPort *p; | |
2348 | ||
2349 | if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) | |
2350 | log_unit_debug(u, "Failed to parse ffs value: %s", value); | |
2351 | else { | |
2352 | ||
2353 | LIST_FOREACH(port, p, s->ports) | |
2354 | if (p->type == SOCKET_USB_FUNCTION && | |
2355 | path_equal_or_files_same(p->path, value+skip)) | |
2356 | break; | |
2357 | ||
2358 | if (p) { | |
2359 | safe_close(p->fd); | |
2360 | p->fd = fdset_remove(fds, fd); | |
2361 | } | |
2362 | } | |
2363 | ||
a16e1123 | 2364 | } else |
f2341e0a | 2365 | log_unit_debug(UNIT(s), "Unknown serialization key: %s", key); |
a16e1123 LP |
2366 | |
2367 | return 0; | |
2368 | } | |
2369 | ||
9ff1a6f1 | 2370 | static void socket_distribute_fds(Unit *u, FDSet *fds) { |
01e10de3 LP |
2371 | Socket *s = SOCKET(u); |
2372 | SocketPort *p; | |
2373 | ||
2374 | assert(u); | |
2375 | ||
2376 | LIST_FOREACH(port, p, s->ports) { | |
2377 | Iterator i; | |
2378 | int fd; | |
2379 | ||
2380 | if (p->type != SOCKET_SOCKET) | |
2381 | continue; | |
2382 | ||
2383 | if (p->fd >= 0) | |
2384 | continue; | |
2385 | ||
2386 | FDSET_FOREACH(fd, fds, i) { | |
2387 | if (socket_address_matches_fd(&p->address, fd)) { | |
2388 | p->fd = fdset_remove(fds, fd); | |
2389 | s->deserialized_state = SOCKET_LISTENING; | |
2390 | break; | |
2391 | } | |
2392 | } | |
2393 | } | |
01e10de3 LP |
2394 | } |
2395 | ||
44a6b1b6 | 2396 | _pure_ static UnitActiveState socket_active_state(Unit *u) { |
87f0e418 | 2397 | assert(u); |
5cb5a6ff | 2398 | |
acbb0225 | 2399 | return state_translation_table[SOCKET(u)->state]; |
5cb5a6ff LP |
2400 | } |
2401 | ||
44a6b1b6 | 2402 | _pure_ static const char *socket_sub_state_to_string(Unit *u) { |
10a94420 LP |
2403 | assert(u); |
2404 | ||
a16e1123 | 2405 | return socket_state_to_string(SOCKET(u)->state); |
10a94420 LP |
2406 | } |
2407 | ||
67419600 OS |
2408 | const char* socket_port_type_to_string(SocketPort *p) { |
2409 | ||
2410 | assert(p); | |
2411 | ||
2412 | switch (p->type) { | |
718db961 LP |
2413 | |
2414 | case SOCKET_SOCKET: | |
2415 | ||
2416 | switch (p->address.type) { | |
2417 | ||
2418 | case SOCK_STREAM: | |
2419 | return "Stream"; | |
2420 | ||
2421 | case SOCK_DGRAM: | |
2422 | return "Datagram"; | |
2423 | ||
2424 | case SOCK_SEQPACKET: | |
2425 | return "SequentialPacket"; | |
2426 | ||
2427 | case SOCK_RAW: | |
2428 | if (socket_address_family(&p->address) == AF_NETLINK) | |
2429 | return "Netlink"; | |
2430 | ||
2431 | default: | |
2432 | return NULL; | |
2433 | } | |
2434 | ||
2435 | case SOCKET_SPECIAL: | |
2436 | return "Special"; | |
2437 | ||
2438 | case SOCKET_MQUEUE: | |
2439 | return "MessageQueue"; | |
2440 | ||
2441 | case SOCKET_FIFO: | |
2442 | return "FIFO"; | |
2443 | ||
60252446 PS |
2444 | case SOCKET_USB_FUNCTION: |
2445 | return "USBFunction"; | |
2446 | ||
718db961 LP |
2447 | default: |
2448 | return NULL; | |
67419600 OS |
2449 | } |
2450 | } | |
2451 | ||
44a6b1b6 | 2452 | _pure_ static bool socket_check_gc(Unit *u) { |
6cf6bbc2 LP |
2453 | Socket *s = SOCKET(u); |
2454 | ||
2455 | assert(u); | |
2456 | ||
2457 | return s->n_connections > 0; | |
2458 | } | |
2459 | ||
718db961 LP |
2460 | static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
2461 | SocketPort *p = userdata; | |
4f2d528d | 2462 | int cfd = -1; |
9152c765 | 2463 | |
718db961 | 2464 | assert(p); |
8d567588 | 2465 | assert(fd >= 0); |
9152c765 | 2466 | |
718db961 LP |
2467 | if (p->socket->state != SOCKET_LISTENING) |
2468 | return 0; | |
871d7de4 | 2469 | |
f2341e0a | 2470 | log_unit_debug(UNIT(p->socket), "Incoming traffic"); |
9152c765 | 2471 | |
718db961 | 2472 | if (revents != EPOLLIN) { |
641e01dc | 2473 | |
718db961 | 2474 | if (revents & EPOLLHUP) |
f2341e0a | 2475 | log_unit_error(UNIT(p->socket), "Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that."); |
641e01dc | 2476 | else |
f2341e0a | 2477 | log_unit_error(UNIT(p->socket), "Got unexpected poll event (0x%x) on socket.", revents); |
8d567588 | 2478 | goto fail; |
4f2d528d LP |
2479 | } |
2480 | ||
718db961 LP |
2481 | if (p->socket->accept && |
2482 | p->type == SOCKET_SOCKET && | |
2483 | socket_address_can_accept(&p->address)) { | |
2484 | ||
4f2d528d LP |
2485 | for (;;) { |
2486 | ||
b14eda96 LP |
2487 | cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK); |
2488 | if (cfd < 0) { | |
4f2d528d LP |
2489 | |
2490 | if (errno == EINTR) | |
2491 | continue; | |
2492 | ||
f2341e0a | 2493 | log_unit_error_errno(UNIT(p->socket), errno, "Failed to accept socket: %m"); |
8d567588 | 2494 | goto fail; |
4f2d528d LP |
2495 | } |
2496 | ||
2497 | break; | |
2498 | } | |
4fd5948e | 2499 | |
718db961 | 2500 | socket_apply_socket_options(p->socket, cfd); |
4f2d528d | 2501 | } |
9152c765 | 2502 | |
718db961 LP |
2503 | socket_enter_running(p->socket, cfd); |
2504 | return 0; | |
8d567588 LP |
2505 | |
2506 | fail: | |
718db961 LP |
2507 | socket_enter_stop_pre(p->socket, SOCKET_FAILURE_RESOURCES); |
2508 | return 0; | |
9152c765 LP |
2509 | } |
2510 | ||
87f0e418 LP |
2511 | static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
2512 | Socket *s = SOCKET(u); | |
cfc4eb4c | 2513 | SocketResult f; |
5cb5a6ff LP |
2514 | |
2515 | assert(s); | |
034c6ed7 | 2516 | assert(pid >= 0); |
5cb5a6ff | 2517 | |
8c47c732 LP |
2518 | if (pid != s->control_pid) |
2519 | return; | |
542563ba | 2520 | |
034c6ed7 LP |
2521 | s->control_pid = 0; |
2522 | ||
96342de6 | 2523 | if (is_clean_exit(code, status, NULL)) |
cfc4eb4c LP |
2524 | f = SOCKET_SUCCESS; |
2525 | else if (code == CLD_EXITED) | |
2526 | f = SOCKET_FAILURE_EXIT_CODE; | |
2527 | else if (code == CLD_KILLED) | |
2528 | f = SOCKET_FAILURE_SIGNAL; | |
2529 | else if (code == CLD_DUMPED) | |
2530 | f = SOCKET_FAILURE_CORE_DUMP; | |
2531 | else | |
a4152e3f | 2532 | assert_not_reached("Unknown sigchld code"); |
8c47c732 | 2533 | |
b708e7ce | 2534 | if (s->control_command) { |
6ea832a2 | 2535 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
a16e1123 | 2536 | |
b708e7ce | 2537 | if (s->control_command->ignore) |
cfc4eb4c | 2538 | f = SOCKET_SUCCESS; |
b708e7ce LP |
2539 | } |
2540 | ||
f2341e0a LP |
2541 | log_unit_full(u, f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
2542 | "Control process exited, code=%s status=%i", | |
2543 | sigchld_code_to_string(code), status); | |
034c6ed7 | 2544 | |
cfc4eb4c LP |
2545 | if (f != SOCKET_SUCCESS) |
2546 | s->result = f; | |
2547 | ||
2548 | if (s->control_command && | |
2549 | s->control_command->command_next && | |
2550 | f == SOCKET_SUCCESS) { | |
2551 | ||
f2341e0a | 2552 | log_unit_debug(u, "Running next command for state %s", socket_state_to_string(s->state)); |
cfc4eb4c | 2553 | socket_run_next(s); |
acbb0225 | 2554 | } else { |
a16e1123 LP |
2555 | s->control_command = NULL; |
2556 | s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; | |
2557 | ||
034c6ed7 LP |
2558 | /* No further commands for this step, so let's figure |
2559 | * out what to do next */ | |
5cb5a6ff | 2560 | |
f2341e0a | 2561 | log_unit_debug(u, "Got final SIGCHLD for state %s", socket_state_to_string(s->state)); |
acbb0225 | 2562 | |
034c6ed7 LP |
2563 | switch (s->state) { |
2564 | ||
2565 | case SOCKET_START_PRE: | |
cfc4eb4c | 2566 | if (f == SOCKET_SUCCESS) |
3900e5fd | 2567 | socket_enter_start_chown(s); |
034c6ed7 | 2568 | else |
cfc4eb4c | 2569 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, f); |
034c6ed7 LP |
2570 | break; |
2571 | ||
3900e5fd LP |
2572 | case SOCKET_START_CHOWN: |
2573 | if (f == SOCKET_SUCCESS) | |
2574 | socket_enter_start_post(s); | |
2575 | else | |
2576 | socket_enter_stop_pre(s, f); | |
2577 | break; | |
2578 | ||
034c6ed7 | 2579 | case SOCKET_START_POST: |
cfc4eb4c | 2580 | if (f == SOCKET_SUCCESS) |
e9af15c3 | 2581 | socket_enter_listening(s); |
034c6ed7 | 2582 | else |
cfc4eb4c | 2583 | socket_enter_stop_pre(s, f); |
034c6ed7 LP |
2584 | break; |
2585 | ||
2586 | case SOCKET_STOP_PRE: | |
2587 | case SOCKET_STOP_PRE_SIGTERM: | |
2588 | case SOCKET_STOP_PRE_SIGKILL: | |
cfc4eb4c | 2589 | socket_enter_stop_post(s, f); |
034c6ed7 LP |
2590 | break; |
2591 | ||
2592 | case SOCKET_STOP_POST: | |
80876c20 LP |
2593 | case SOCKET_FINAL_SIGTERM: |
2594 | case SOCKET_FINAL_SIGKILL: | |
cfc4eb4c | 2595 | socket_enter_dead(s, f); |
034c6ed7 LP |
2596 | break; |
2597 | ||
2598 | default: | |
2599 | assert_not_reached("Uh, control process died at wrong time."); | |
2600 | } | |
2601 | } | |
c4e2ceae LP |
2602 | |
2603 | /* Notify clients about changed exit status */ | |
2604 | unit_add_to_dbus_queue(u); | |
034c6ed7 | 2605 | } |
5cb5a6ff | 2606 | |
718db961 LP |
2607 | static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
2608 | Socket *s = SOCKET(userdata); | |
5cb5a6ff | 2609 | |
034c6ed7 | 2610 | assert(s); |
718db961 | 2611 | assert(s->timer_event_source == source); |
034c6ed7 LP |
2612 | |
2613 | switch (s->state) { | |
2614 | ||
2615 | case SOCKET_START_PRE: | |
f2341e0a | 2616 | log_unit_warning(UNIT(s), "Starting timed out. Terminating."); |
cfc4eb4c | 2617 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
da19d5c1 | 2618 | break; |
80876c20 | 2619 | |
3900e5fd | 2620 | case SOCKET_START_CHOWN: |
034c6ed7 | 2621 | case SOCKET_START_POST: |
f2341e0a | 2622 | log_unit_warning(UNIT(s), "Starting timed out. Stopping."); |
cfc4eb4c | 2623 | socket_enter_stop_pre(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2624 | break; |
2625 | ||
2626 | case SOCKET_STOP_PRE: | |
f2341e0a | 2627 | log_unit_warning(UNIT(s), "Stopping timed out. Terminating."); |
cfc4eb4c | 2628 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2629 | break; |
2630 | ||
2631 | case SOCKET_STOP_PRE_SIGTERM: | |
4819ff03 | 2632 | if (s->kill_context.send_sigkill) { |
f2341e0a | 2633 | log_unit_warning(UNIT(s), "Stopping timed out. Killing."); |
cfc4eb4c | 2634 | socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2635 | } else { |
f2341e0a | 2636 | log_unit_warning(UNIT(s), "Stopping timed out. Skipping SIGKILL. Ignoring."); |
cfc4eb4c | 2637 | socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2638 | } |
034c6ed7 LP |
2639 | break; |
2640 | ||
2641 | case SOCKET_STOP_PRE_SIGKILL: | |
f2341e0a | 2642 | log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring."); |
cfc4eb4c | 2643 | socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2644 | break; |
2645 | ||
2646 | case SOCKET_STOP_POST: | |
f2341e0a | 2647 | log_unit_warning(UNIT(s), "Stopping timed out (2). Terminating."); |
cfc4eb4c | 2648 | socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2649 | break; |
2650 | ||
80876c20 | 2651 | case SOCKET_FINAL_SIGTERM: |
4819ff03 | 2652 | if (s->kill_context.send_sigkill) { |
f2341e0a | 2653 | log_unit_warning(UNIT(s), "Stopping timed out (2). Killing."); |
cfc4eb4c | 2654 | socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2655 | } else { |
f2341e0a | 2656 | log_unit_warning(UNIT(s), "Stopping timed out (2). Skipping SIGKILL. Ignoring."); |
cfc4eb4c | 2657 | socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); |
ba035df2 | 2658 | } |
034c6ed7 LP |
2659 | break; |
2660 | ||
80876c20 | 2661 | case SOCKET_FINAL_SIGKILL: |
f2341e0a | 2662 | log_unit_warning(UNIT(s), "Still around after SIGKILL (2). Entering failed mode."); |
cfc4eb4c | 2663 | socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT); |
034c6ed7 LP |
2664 | break; |
2665 | ||
2666 | default: | |
2667 | assert_not_reached("Timeout at wrong time."); | |
2668 | } | |
718db961 LP |
2669 | |
2670 | return 0; | |
5cb5a6ff LP |
2671 | } |
2672 | ||
79c7626d LP |
2673 | int socket_collect_fds(Socket *s, int **fds) { |
2674 | int *rfds, k = 0, n = 0; | |
44d8db9e LP |
2675 | SocketPort *p; |
2676 | ||
2677 | assert(s); | |
2678 | assert(fds); | |
44d8db9e LP |
2679 | |
2680 | /* Called from the service code for requesting our fds */ | |
2681 | ||
15087cdb | 2682 | LIST_FOREACH(port, p, s->ports) { |
44d8db9e | 2683 | if (p->fd >= 0) |
79c7626d LP |
2684 | n++; |
2685 | n += p->n_auxiliary_fds; | |
15087cdb | 2686 | } |
44d8db9e | 2687 | |
79c7626d | 2688 | if (n <= 0) { |
de3756ab | 2689 | *fds = NULL; |
de3756ab LP |
2690 | return 0; |
2691 | } | |
2692 | ||
79c7626d | 2693 | rfds = new(int, n); |
e5403f09 | 2694 | if (!rfds) |
44d8db9e LP |
2695 | return -ENOMEM; |
2696 | ||
15087cdb | 2697 | LIST_FOREACH(port, p, s->ports) { |
79c7626d LP |
2698 | int i; |
2699 | ||
44d8db9e LP |
2700 | if (p->fd >= 0) |
2701 | rfds[k++] = p->fd; | |
15087cdb PS |
2702 | for (i = 0; i < p->n_auxiliary_fds; ++i) |
2703 | rfds[k++] = p->auxiliary_fds[i]; | |
2704 | } | |
44d8db9e | 2705 | |
79c7626d | 2706 | assert(k == n); |
44d8db9e LP |
2707 | |
2708 | *fds = rfds; | |
79c7626d | 2709 | return n; |
44d8db9e LP |
2710 | } |
2711 | ||
e821075a LP |
2712 | static void socket_reset_failed(Unit *u) { |
2713 | Socket *s = SOCKET(u); | |
2714 | ||
2715 | assert(s); | |
2716 | ||
2717 | if (s->state == SOCKET_FAILED) | |
2718 | socket_set_state(s, SOCKET_DEAD); | |
2719 | ||
2720 | s->result = SOCKET_SUCCESS; | |
2721 | } | |
2722 | ||
6cf6bbc2 LP |
2723 | void socket_connection_unref(Socket *s) { |
2724 | assert(s); | |
2725 | ||
2726 | /* The service is dead. Yay! | |
2727 | * | |
35b8ca3a | 2728 | * This is strictly for one-instance-per-connection |
6cf6bbc2 LP |
2729 | * services. */ |
2730 | ||
2731 | assert(s->n_connections > 0); | |
2732 | s->n_connections--; | |
2733 | ||
f2341e0a | 2734 | log_unit_debug(UNIT(s), "One connection closed, %u left.", s->n_connections); |
5632e374 LP |
2735 | } |
2736 | ||
d137a488 UTL |
2737 | static void socket_trigger_notify(Unit *u, Unit *other) { |
2738 | Socket *s = SOCKET(u); | |
d137a488 UTL |
2739 | |
2740 | assert(u); | |
2741 | assert(other); | |
2742 | ||
2743 | /* Don't propagate state changes from the service if we are | |
2744 | already down or accepting connections */ | |
6bf0f408 | 2745 | if (!IN_SET(s->state, SOCKET_RUNNING, SOCKET_LISTENING) || s->accept) |
d137a488 UTL |
2746 | return; |
2747 | ||
6bf0f408 LP |
2748 | if (other->start_limit_hit) { |
2749 | socket_enter_stop_pre(s, SOCKET_FAILURE_SERVICE_START_LIMIT_HIT); | |
d137a488 | 2750 | return; |
6bf0f408 | 2751 | } |
d137a488 | 2752 | |
6bf0f408 LP |
2753 | if (other->load_state != UNIT_LOADED || other->type != UNIT_SERVICE) |
2754 | return; | |
d137a488 | 2755 | |
6bf0f408 LP |
2756 | if (IN_SET(SERVICE(other)->state, |
2757 | SERVICE_DEAD, SERVICE_FAILED, | |
2758 | SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL, | |
2759 | SERVICE_AUTO_RESTART)) | |
2760 | socket_enter_listening(s); | |
d137a488 | 2761 | |
6bf0f408 | 2762 | if (SERVICE(other)->state == SERVICE_RUNNING) |
d137a488 UTL |
2763 | socket_set_state(s, SOCKET_RUNNING); |
2764 | } | |
2765 | ||
718db961 | 2766 | static int socket_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 2767 | return unit_kill_common(u, who, signo, -1, SOCKET(u)->control_pid, error); |
8a0867d6 LP |
2768 | } |
2769 | ||
7a7821c8 | 2770 | static int socket_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 2771 | Socket *s = SOCKET(u); |
7a7821c8 | 2772 | usec_t t; |
68db7a3b ZJS |
2773 | int r; |
2774 | ||
2775 | if (!s->timer_event_source) | |
2776 | return 0; | |
2777 | ||
7a7821c8 | 2778 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
2779 | if (r < 0) |
2780 | return r; | |
7a7821c8 LP |
2781 | if (t == USEC_INFINITY) |
2782 | return 0; | |
68db7a3b | 2783 | |
7a7821c8 | 2784 | *timeout = t; |
68db7a3b ZJS |
2785 | return 1; |
2786 | } | |
2787 | ||
8dd4c05b LP |
2788 | char *socket_fdname(Socket *s) { |
2789 | assert(s); | |
2790 | ||
2791 | /* Returns the name to use for $LISTEN_NAMES. If the user | |
2792 | * didn't specify anything specifically, use the socket unit's | |
2793 | * name as fallback. */ | |
2794 | ||
2795 | if (s->fdname) | |
2796 | return s->fdname; | |
2797 | ||
2798 | return UNIT(s)->id; | |
2799 | } | |
2800 | ||
291d565a LP |
2801 | static int socket_control_pid(Unit *u) { |
2802 | Socket *s = SOCKET(u); | |
2803 | ||
2804 | assert(s); | |
2805 | ||
2806 | return s->control_pid; | |
2807 | } | |
2808 | ||
a16e1123 LP |
2809 | static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = { |
2810 | [SOCKET_EXEC_START_PRE] = "StartPre", | |
3900e5fd | 2811 | [SOCKET_EXEC_START_CHOWN] = "StartChown", |
a16e1123 LP |
2812 | [SOCKET_EXEC_START_POST] = "StartPost", |
2813 | [SOCKET_EXEC_STOP_PRE] = "StopPre", | |
2814 | [SOCKET_EXEC_STOP_POST] = "StopPost" | |
2815 | }; | |
2816 | ||
2817 | DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand); | |
2818 | ||
cfc4eb4c LP |
2819 | static const char* const socket_result_table[_SOCKET_RESULT_MAX] = { |
2820 | [SOCKET_SUCCESS] = "success", | |
2821 | [SOCKET_FAILURE_RESOURCES] = "resources", | |
2822 | [SOCKET_FAILURE_TIMEOUT] = "timeout", | |
2823 | [SOCKET_FAILURE_EXIT_CODE] = "exit-code", | |
2824 | [SOCKET_FAILURE_SIGNAL] = "signal", | |
c2f34808 | 2825 | [SOCKET_FAILURE_CORE_DUMP] = "core-dump", |
8b26cdbd | 2826 | [SOCKET_FAILURE_TRIGGER_LIMIT_HIT] = "trigger-limit-hit", |
6bf0f408 | 2827 | [SOCKET_FAILURE_SERVICE_START_LIMIT_HIT] = "service-start-limit-hit" |
cfc4eb4c LP |
2828 | }; |
2829 | ||
2830 | DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult); | |
2831 | ||
87f0e418 | 2832 | const UnitVTable socket_vtable = { |
7d17cfbc | 2833 | .object_size = sizeof(Socket), |
718db961 LP |
2834 | .exec_context_offset = offsetof(Socket, exec_context), |
2835 | .cgroup_context_offset = offsetof(Socket, cgroup_context), | |
2836 | .kill_context_offset = offsetof(Socket, kill_context), | |
613b411c | 2837 | .exec_runtime_offset = offsetof(Socket, exec_runtime), |
3ef63c31 | 2838 | |
f975e971 LP |
2839 | .sections = |
2840 | "Unit\0" | |
2841 | "Socket\0" | |
2842 | "Install\0", | |
4ad49000 | 2843 | .private_section = "Socket", |
71645aca | 2844 | |
034c6ed7 LP |
2845 | .init = socket_init, |
2846 | .done = socket_done, | |
a16e1123 LP |
2847 | .load = socket_load, |
2848 | ||
2849 | .coldplug = socket_coldplug, | |
034c6ed7 | 2850 | |
5cb5a6ff LP |
2851 | .dump = socket_dump, |
2852 | ||
542563ba LP |
2853 | .start = socket_start, |
2854 | .stop = socket_stop, | |
5cb5a6ff | 2855 | |
718db961 LP |
2856 | .kill = socket_kill, |
2857 | ||
68db7a3b ZJS |
2858 | .get_timeout = socket_get_timeout, |
2859 | ||
a16e1123 LP |
2860 | .serialize = socket_serialize, |
2861 | .deserialize_item = socket_deserialize_item, | |
01e10de3 | 2862 | .distribute_fds = socket_distribute_fds, |
a16e1123 | 2863 | |
5cb5a6ff | 2864 | .active_state = socket_active_state, |
10a94420 | 2865 | .sub_state_to_string = socket_sub_state_to_string, |
5cb5a6ff | 2866 | |
6cf6bbc2 LP |
2867 | .check_gc = socket_check_gc, |
2868 | ||
034c6ed7 | 2869 | .sigchld_event = socket_sigchld_event, |
4139c1b2 | 2870 | |
d137a488 UTL |
2871 | .trigger_notify = socket_trigger_notify, |
2872 | ||
fdf20a31 | 2873 | .reset_failed = socket_reset_failed, |
5632e374 | 2874 | |
291d565a LP |
2875 | .control_pid = socket_control_pid, |
2876 | ||
718db961 | 2877 | .bus_vtable = bus_socket_vtable, |
74c964d3 LP |
2878 | .bus_set_property = bus_socket_set_property, |
2879 | .bus_commit_properties = bus_socket_commit_properties, | |
c6918296 MS |
2880 | |
2881 | .status_message_formats = { | |
2882 | /*.starting_stopping = { | |
2883 | [0] = "Starting socket %s...", | |
2884 | [1] = "Stopping socket %s...", | |
2885 | },*/ | |
2886 | .finished_start_job = { | |
2887 | [JOB_DONE] = "Listening on %s.", | |
2888 | [JOB_FAILED] = "Failed to listen on %s.", | |
c6918296 MS |
2889 | [JOB_TIMEOUT] = "Timed out starting %s.", |
2890 | }, | |
2891 | .finished_stop_job = { | |
2892 | [JOB_DONE] = "Closed %s.", | |
2893 | [JOB_FAILED] = "Failed stopping %s.", | |
2894 | [JOB_TIMEOUT] = "Timed out stopping %s.", | |
2895 | }, | |
2896 | }, | |
5cb5a6ff | 2897 | }; |