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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
07b0b134 ML |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2010 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
8 | under the terms of the GNU Lesser General Public License as published by |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
07b0b134 ML |
10 | (at your option) any later version. |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 15 | Lesser General Public License for more details. |
07b0b134 | 16 | |
5430f7f2 | 17 | You should have received a copy of the GNU Lesser General Public License |
07b0b134 ML |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
19 | ***/ | |
20 | ||
21 | #include <errno.h> | |
07b0b134 ML |
22 | #include <sys/epoll.h> |
23 | #include <sys/stat.h> | |
4f5dd394 | 24 | #include <unistd.h> |
07b0b134 | 25 | |
b4bbcaa9 TA |
26 | #include "libudev.h" |
27 | ||
b5efdb8a | 28 | #include "alloc-util.h" |
07b0b134 | 29 | #include "dbus-swap.h" |
4f5dd394 | 30 | #include "escape.h" |
9a57c629 | 31 | #include "exit-status.h" |
3ffd4af2 | 32 | #include "fd-util.h" |
f97b34a6 | 33 | #include "format-util.h" |
4f5dd394 | 34 | #include "fstab-util.h" |
6bedfcbb | 35 | #include "parse-util.h" |
9eb977db | 36 | #include "path-util.h" |
7b3e062c | 37 | #include "process-util.h" |
4f5dd394 | 38 | #include "special.h" |
8b43440b | 39 | #include "string-table.h" |
07630cea | 40 | #include "string-util.h" |
3ffd4af2 | 41 | #include "swap.h" |
5bcb0f2b | 42 | #include "udev-util.h" |
4f5dd394 LP |
43 | #include "unit-name.h" |
44 | #include "unit.h" | |
45 | #include "virt.h" | |
07b0b134 ML |
46 | |
47 | static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = { | |
48 | [SWAP_DEAD] = UNIT_INACTIVE, | |
e04aad61 | 49 | [SWAP_ACTIVATING] = UNIT_ACTIVATING, |
5bcb0f2b | 50 | [SWAP_ACTIVATING_DONE] = UNIT_ACTIVE, |
07b0b134 | 51 | [SWAP_ACTIVE] = UNIT_ACTIVE, |
e04aad61 | 52 | [SWAP_DEACTIVATING] = UNIT_DEACTIVATING, |
e04aad61 LP |
53 | [SWAP_DEACTIVATING_SIGTERM] = UNIT_DEACTIVATING, |
54 | [SWAP_DEACTIVATING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 55 | [SWAP_FAILED] = UNIT_FAILED |
07b0b134 ML |
56 | }; |
57 | ||
718db961 LP |
58 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
59 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
60 | ||
dedf3719 LP |
61 | static bool SWAP_STATE_WITH_PROCESS(SwapState state) { |
62 | return IN_SET(state, | |
63 | SWAP_ACTIVATING, | |
64 | SWAP_ACTIVATING_DONE, | |
65 | SWAP_DEACTIVATING, | |
66 | SWAP_DEACTIVATING_SIGTERM, | |
67 | SWAP_DEACTIVATING_SIGKILL); | |
68 | } | |
69 | ||
e04aad61 | 70 | static void swap_unset_proc_swaps(Swap *s) { |
9670d583 LP |
71 | assert(s); |
72 | ||
73 | if (!s->from_proc_swaps) | |
74 | return; | |
75 | ||
a1e58e8e | 76 | s->parameters_proc_swaps.what = mfree(s->parameters_proc_swaps.what); |
9670d583 LP |
77 | |
78 | s->from_proc_swaps = false; | |
79 | } | |
80 | ||
81 | static int swap_set_devnode(Swap *s, const char *devnode) { | |
df326b84 | 82 | Hashmap *swaps; |
5bcb0f2b | 83 | Swap *first; |
9670d583 | 84 | int r; |
e04aad61 LP |
85 | |
86 | assert(s); | |
87 | ||
d5099efc | 88 | r = hashmap_ensure_allocated(&UNIT(s)->manager->swaps_by_devnode, &string_hash_ops); |
9670d583 LP |
89 | if (r < 0) |
90 | return r; | |
e04aad61 | 91 | |
9670d583 | 92 | swaps = UNIT(s)->manager->swaps_by_devnode; |
e04aad61 | 93 | |
9670d583 LP |
94 | if (s->devnode) { |
95 | first = hashmap_get(swaps, s->devnode); | |
e04aad61 | 96 | |
9670d583 LP |
97 | LIST_REMOVE(same_devnode, first, s); |
98 | if (first) | |
99 | hashmap_replace(swaps, first->devnode, first); | |
100 | else | |
101 | hashmap_remove(swaps, s->devnode); | |
5bcb0f2b | 102 | |
a1e58e8e | 103 | s->devnode = mfree(s->devnode); |
9670d583 LP |
104 | } |
105 | ||
106 | if (devnode) { | |
107 | s->devnode = strdup(devnode); | |
108 | if (!s->devnode) | |
109 | return -ENOMEM; | |
110 | ||
111 | first = hashmap_get(swaps, s->devnode); | |
112 | LIST_PREPEND(same_devnode, first, s); | |
113 | ||
114 | return hashmap_replace(swaps, first->devnode, first); | |
115 | } | |
116 | ||
117 | return 0; | |
e04aad61 LP |
118 | } |
119 | ||
f6cebb3b | 120 | static void swap_init(Unit *u) { |
6e620bec LP |
121 | Swap *s = SWAP(u); |
122 | ||
123 | assert(s); | |
1124fe6f | 124 | assert(UNIT(s)->load_state == UNIT_STUB); |
6e620bec | 125 | |
1f19a534 | 126 | s->timeout_usec = u->manager->default_timeout_start_usec; |
e04aad61 | 127 | |
ac155bb8 MS |
128 | s->exec_context.std_output = u->manager->default_std_output; |
129 | s->exec_context.std_error = u->manager->default_std_error; | |
085afe36 | 130 | |
6b1dc2bd | 131 | s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1; |
e04aad61 | 132 | |
e1770af8 | 133 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; |
c8f4d764 | 134 | |
5bcb0f2b | 135 | u->ignore_on_isolate = true; |
e04aad61 LP |
136 | } |
137 | ||
138 | static void swap_unwatch_control_pid(Swap *s) { | |
139 | assert(s); | |
140 | ||
141 | if (s->control_pid <= 0) | |
142 | return; | |
143 | ||
144 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
145 | s->control_pid = 0; | |
6e620bec LP |
146 | } |
147 | ||
4e85aff4 LP |
148 | static void swap_done(Unit *u) { |
149 | Swap *s = SWAP(u); | |
07b0b134 | 150 | |
4e85aff4 | 151 | assert(s); |
07b0b134 | 152 | |
e04aad61 | 153 | swap_unset_proc_swaps(s); |
9670d583 | 154 | swap_set_devnode(s, NULL); |
e04aad61 | 155 | |
a1e58e8e LP |
156 | s->what = mfree(s->what); |
157 | s->parameters_fragment.what = mfree(s->parameters_fragment.what); | |
158 | s->parameters_fragment.options = mfree(s->parameters_fragment.options); | |
86b23b07 | 159 | |
613b411c | 160 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e04aad61 LP |
161 | exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); |
162 | s->control_command = NULL; | |
163 | ||
29206d46 LP |
164 | dynamic_creds_unref(&s->dynamic_creds); |
165 | ||
e04aad61 LP |
166 | swap_unwatch_control_pid(s); |
167 | ||
718db961 LP |
168 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
169 | } | |
170 | ||
36c16a7c | 171 | static int swap_arm_timer(Swap *s, usec_t usec) { |
718db961 LP |
172 | int r; |
173 | ||
174 | assert(s); | |
175 | ||
718db961 | 176 | if (s->timer_event_source) { |
36c16a7c | 177 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
178 | if (r < 0) |
179 | return r; | |
180 | ||
181 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
182 | } | |
183 | ||
36c16a7c LP |
184 | if (usec == USEC_INFINITY) |
185 | return 0; | |
186 | ||
7dfbe2e3 | 187 | r = sd_event_add_time( |
6a0f1f6d LP |
188 | UNIT(s)->manager->event, |
189 | &s->timer_event_source, | |
190 | CLOCK_MONOTONIC, | |
36c16a7c | 191 | usec, 0, |
6a0f1f6d | 192 | swap_dispatch_timer, s); |
7dfbe2e3 TG |
193 | if (r < 0) |
194 | return r; | |
195 | ||
196 | (void) sd_event_source_set_description(s->timer_event_source, "swap-timer"); | |
197 | ||
198 | return 0; | |
07b0b134 ML |
199 | } |
200 | ||
eef85c4a | 201 | static int swap_add_device_dependencies(Swap *s) { |
173a8d04 LP |
202 | assert(s); |
203 | ||
204 | if (!s->what) | |
205 | return 0; | |
206 | ||
f10af76d LP |
207 | if (!s->from_fragment) |
208 | return 0; | |
209 | ||
cfcfd4ae | 210 | if (is_device_path(s->what)) |
eef85c4a | 211 | return unit_add_node_dependency(UNIT(s), s->what, MANAGER_IS_SYSTEM(UNIT(s)->manager), UNIT_BINDS_TO, UNIT_DEPENDENCY_FILE); |
cfcfd4ae LP |
212 | else |
213 | /* File based swap devices need to be ordered after | |
2b93b027 | 214 | * systemd-remount-fs.service, since they might need a |
cfcfd4ae | 215 | * writable file system. */ |
eef85c4a | 216 | return unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_REMOUNT_FS_SERVICE, NULL, true, UNIT_DEPENDENCY_FILE); |
173a8d04 LP |
217 | } |
218 | ||
2edd4434 | 219 | static int swap_add_default_dependencies(Swap *s) { |
8bf23dc7 FB |
220 | int r; |
221 | ||
2edd4434 LP |
222 | assert(s); |
223 | ||
4c9ea260 LP |
224 | if (!UNIT(s)->default_dependencies) |
225 | return 0; | |
226 | ||
463d0d15 | 227 | if (!MANAGER_IS_SYSTEM(UNIT(s)->manager)) |
6b1dc2bd | 228 | return 0; |
2edd4434 | 229 | |
75f86906 | 230 | if (detect_container() > 0) |
c0387ebf LP |
231 | return 0; |
232 | ||
8bf23dc7 FB |
233 | /* swap units generated for the swap dev links are missing the |
234 | * ordering dep against the swap target. */ | |
eef85c4a | 235 | r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SWAP_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
8bf23dc7 FB |
236 | if (r < 0) |
237 | return r; | |
238 | ||
eef85c4a | 239 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true, UNIT_DEPENDENCY_DEFAULT); |
2edd4434 LP |
240 | } |
241 | ||
4e85aff4 | 242 | static int swap_verify(Swap *s) { |
7fd1b19b | 243 | _cleanup_free_ char *e = NULL; |
7410616c | 244 | int r; |
4e85aff4 | 245 | |
1124fe6f | 246 | if (UNIT(s)->load_state != UNIT_LOADED) |
5bcb0f2b | 247 | return 0; |
4e85aff4 | 248 | |
7410616c LP |
249 | r = unit_name_from_path(s->what, ".swap", &e); |
250 | if (r < 0) | |
f2341e0a | 251 | return log_unit_error_errno(UNIT(s), r, "Failed to generate unit name from path: %m"); |
4e85aff4 | 252 | |
7410616c | 253 | if (!unit_has_name(UNIT(s), e)) { |
f2341e0a | 254 | log_unit_error(UNIT(s), "Value of What= and unit name do not match, not loading."); |
4e85aff4 LP |
255 | return -EINVAL; |
256 | } | |
257 | ||
4819ff03 | 258 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 259 | log_unit_error(UNIT(s), "Unit has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load."); |
e04aad61 LP |
260 | return -EINVAL; |
261 | } | |
262 | ||
4e85aff4 LP |
263 | return 0; |
264 | } | |
265 | ||
9670d583 LP |
266 | static int swap_load_devnode(Swap *s) { |
267 | _cleanup_udev_device_unref_ struct udev_device *d = NULL; | |
268 | struct stat st; | |
269 | const char *p; | |
270 | ||
271 | assert(s); | |
272 | ||
273 | if (stat(s->what, &st) < 0 || !S_ISBLK(st.st_mode)) | |
274 | return 0; | |
275 | ||
276 | d = udev_device_new_from_devnum(UNIT(s)->manager->udev, 'b', st.st_rdev); | |
277 | if (!d) | |
278 | return 0; | |
279 | ||
280 | p = udev_device_get_devnode(d); | |
281 | if (!p) | |
282 | return 0; | |
283 | ||
284 | return swap_set_devnode(s, p); | |
285 | } | |
286 | ||
07b0b134 ML |
287 | static int swap_load(Unit *u) { |
288 | int r; | |
289 | Swap *s = SWAP(u); | |
290 | ||
291 | assert(s); | |
ac155bb8 | 292 | assert(u->load_state == UNIT_STUB); |
07b0b134 ML |
293 | |
294 | /* Load a .swap file */ | |
3000f850 YW |
295 | if (SWAP(u)->from_proc_swaps) |
296 | r = unit_load_fragment_and_dropin_optional(u); | |
297 | else | |
298 | r = unit_load_fragment_and_dropin(u); | |
646134dc | 299 | if (r < 0) |
07b0b134 ML |
300 | return r; |
301 | ||
ac155bb8 | 302 | if (u->load_state == UNIT_LOADED) { |
4e85aff4 | 303 | |
1124fe6f | 304 | if (UNIT(s)->fragment_path) |
4e85aff4 LP |
305 | s->from_fragment = true; |
306 | ||
307 | if (!s->what) { | |
308 | if (s->parameters_fragment.what) | |
309 | s->what = strdup(s->parameters_fragment.what); | |
4e85aff4 LP |
310 | else if (s->parameters_proc_swaps.what) |
311 | s->what = strdup(s->parameters_proc_swaps.what); | |
7410616c LP |
312 | else { |
313 | r = unit_name_to_path(u->id, &s->what); | |
314 | if (r < 0) | |
315 | return r; | |
316 | } | |
4e85aff4 LP |
317 | |
318 | if (!s->what) | |
07b0b134 | 319 | return -ENOMEM; |
4e85aff4 | 320 | } |
07b0b134 ML |
321 | |
322 | path_kill_slashes(s->what); | |
323 | ||
5bcb0f2b LP |
324 | if (!UNIT(s)->description) { |
325 | r = unit_set_description(u, s->what); | |
326 | if (r < 0) | |
4e85aff4 | 327 | return r; |
5bcb0f2b | 328 | } |
4e85aff4 | 329 | |
eef85c4a | 330 | r = unit_require_mounts_for(UNIT(s), s->what, UNIT_DEPENDENCY_IMPLICIT); |
646134dc | 331 | if (r < 0) |
07b0b134 ML |
332 | return r; |
333 | ||
eef85c4a | 334 | r = swap_add_device_dependencies(s); |
646134dc | 335 | if (r < 0) |
6e2ef85b | 336 | return r; |
07b0b134 | 337 | |
9670d583 LP |
338 | r = swap_load_devnode(s); |
339 | if (r < 0) | |
340 | return r; | |
341 | ||
598459ce LP |
342 | r = unit_patch_contexts(u); |
343 | if (r < 0) | |
344 | return r; | |
345 | ||
346 | r = unit_add_exec_dependencies(u, &s->exec_context); | |
347 | if (r < 0) | |
348 | return r; | |
349 | ||
d79200e2 | 350 | r = unit_set_default_slice(u); |
a016b922 LP |
351 | if (r < 0) |
352 | return r; | |
353 | ||
4c9ea260 LP |
354 | r = swap_add_default_dependencies(s); |
355 | if (r < 0) | |
356 | return r; | |
07b0b134 ML |
357 | } |
358 | ||
359 | return swap_verify(s); | |
360 | } | |
361 | ||
628c89cc | 362 | static int swap_setup_unit( |
4e85aff4 LP |
363 | Manager *m, |
364 | const char *what, | |
e04aad61 | 365 | const char *what_proc_swaps, |
4e85aff4 | 366 | int priority, |
e04aad61 LP |
367 | bool set_flags) { |
368 | ||
7fd1b19b | 369 | _cleanup_free_ char *e = NULL; |
2c7c6144 | 370 | bool delete = false; |
5bcb0f2b | 371 | Unit *u = NULL; |
07b0b134 | 372 | int r; |
4e85aff4 LP |
373 | SwapParameters *p; |
374 | ||
375 | assert(m); | |
376 | assert(what); | |
6b1dc2bd | 377 | assert(what_proc_swaps); |
07b0b134 | 378 | |
7410616c LP |
379 | r = unit_name_from_path(what, ".swap", &e); |
380 | if (r < 0) | |
f2341e0a | 381 | return log_unit_error_errno(u, r, "Failed to generate unit name from path: %m"); |
07b0b134 | 382 | |
e04aad61 LP |
383 | u = manager_get_unit(m, e); |
384 | ||
6b1dc2bd | 385 | if (u && |
e04aad61 | 386 | SWAP(u)->from_proc_swaps && |
628c89cc LP |
387 | !path_equal(SWAP(u)->parameters_proc_swaps.what, what_proc_swaps)) { |
388 | log_error("Swap %s appeared twice with different device paths %s and %s", e, SWAP(u)->parameters_proc_swaps.what, what_proc_swaps); | |
e04aad61 | 389 | return -EEXIST; |
628c89cc | 390 | } |
4e85aff4 LP |
391 | |
392 | if (!u) { | |
07b0b134 ML |
393 | delete = true; |
394 | ||
a581e45a | 395 | r = unit_new_for_name(m, sizeof(Swap), e, &u); |
7d17cfbc | 396 | if (r < 0) |
e04aad61 LP |
397 | goto fail; |
398 | ||
7d17cfbc MS |
399 | SWAP(u)->what = strdup(what); |
400 | if (!SWAP(u)->what) { | |
628c89cc | 401 | r = -ENOMEM; |
e04aad61 LP |
402 | goto fail; |
403 | } | |
404 | ||
405 | unit_add_to_load_queue(u); | |
4e85aff4 LP |
406 | } else |
407 | delete = false; | |
07b0b134 | 408 | |
6b1dc2bd | 409 | p = &SWAP(u)->parameters_proc_swaps; |
07b0b134 | 410 | |
6b1dc2bd | 411 | if (!p->what) { |
5bcb0f2b LP |
412 | p->what = strdup(what_proc_swaps); |
413 | if (!p->what) { | |
414 | r = -ENOMEM; | |
6b1dc2bd LP |
415 | goto fail; |
416 | } | |
6b1dc2bd | 417 | } |
e04aad61 | 418 | |
6b1dc2bd LP |
419 | if (set_flags) { |
420 | SWAP(u)->is_active = true; | |
421 | SWAP(u)->just_activated = !SWAP(u)->from_proc_swaps; | |
4e85aff4 | 422 | } |
07b0b134 | 423 | |
6b1dc2bd LP |
424 | SWAP(u)->from_proc_swaps = true; |
425 | ||
4e85aff4 | 426 | p->priority = priority; |
07b0b134 | 427 | |
4e85aff4 | 428 | unit_add_to_dbus_queue(u); |
07b0b134 ML |
429 | return 0; |
430 | ||
431 | fail: | |
f2341e0a | 432 | log_unit_warning_errno(u, r, "Failed to load swap unit: %m"); |
e04aad61 | 433 | |
c9d5c9c0 | 434 | if (delete) |
07b0b134 ML |
435 | unit_free(u); |
436 | ||
4e85aff4 | 437 | return r; |
07b0b134 ML |
438 | } |
439 | ||
628c89cc | 440 | static int swap_process_new(Manager *m, const char *device, int prio, bool set_flags) { |
5bcb0f2b LP |
441 | _cleanup_udev_device_unref_ struct udev_device *d = NULL; |
442 | struct udev_list_entry *item = NULL, *first = NULL; | |
443 | const char *dn; | |
e04aad61 | 444 | struct stat st; |
5bcb0f2b | 445 | int r; |
e04aad61 LP |
446 | |
447 | assert(m); | |
448 | ||
628c89cc | 449 | r = swap_setup_unit(m, device, device, prio, set_flags); |
5bcb0f2b LP |
450 | if (r < 0) |
451 | return r; | |
e04aad61 | 452 | |
5bcb0f2b LP |
453 | /* If this is a block device, then let's add duplicates for |
454 | * all other names of this block device */ | |
455 | if (stat(device, &st) < 0 || !S_ISBLK(st.st_mode)) | |
456 | return 0; | |
e04aad61 | 457 | |
5bcb0f2b LP |
458 | d = udev_device_new_from_devnum(m->udev, 'b', st.st_rdev); |
459 | if (!d) | |
460 | return 0; | |
e04aad61 | 461 | |
5bcb0f2b LP |
462 | /* Add the main device node */ |
463 | dn = udev_device_get_devnode(d); | |
464 | if (dn && !streq(dn, device)) | |
628c89cc | 465 | swap_setup_unit(m, dn, device, prio, set_flags); |
e04aad61 | 466 | |
5bcb0f2b LP |
467 | /* Add additional units for all symlinks */ |
468 | first = udev_device_get_devlinks_list_entry(d); | |
469 | udev_list_entry_foreach(item, first) { | |
470 | const char *p; | |
e04aad61 | 471 | |
5bcb0f2b LP |
472 | /* Don't bother with the /dev/block links */ |
473 | p = udev_list_entry_get_name(item); | |
e04aad61 | 474 | |
5bcb0f2b LP |
475 | if (streq(p, device)) |
476 | continue; | |
e04aad61 | 477 | |
5bcb0f2b LP |
478 | if (path_startswith(p, "/dev/block/")) |
479 | continue; | |
e04aad61 | 480 | |
5bcb0f2b LP |
481 | if (stat(p, &st) >= 0) |
482 | if (!S_ISBLK(st.st_mode) || | |
483 | st.st_rdev != udev_device_get_devnum(d)) | |
484 | continue; | |
e04aad61 | 485 | |
628c89cc | 486 | swap_setup_unit(m, p, device, prio, set_flags); |
e04aad61 LP |
487 | } |
488 | ||
e04aad61 LP |
489 | return r; |
490 | } | |
491 | ||
07b0b134 ML |
492 | static void swap_set_state(Swap *s, SwapState state) { |
493 | SwapState old_state; | |
37cf8fee | 494 | Swap *other; |
e04aad61 | 495 | |
07b0b134 ML |
496 | assert(s); |
497 | ||
498 | old_state = s->state; | |
499 | s->state = state; | |
500 | ||
dedf3719 | 501 | if (!SWAP_STATE_WITH_PROCESS(state)) { |
718db961 | 502 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
e04aad61 LP |
503 | swap_unwatch_control_pid(s); |
504 | s->control_command = NULL; | |
505 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
506 | } | |
507 | ||
07b0b134 | 508 | if (state != old_state) |
f2341e0a | 509 | log_unit_debug(UNIT(s), "Changed %s -> %s", swap_state_to_string(old_state), swap_state_to_string(state)); |
07b0b134 | 510 | |
5bcb0f2b | 511 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); |
37cf8fee LP |
512 | |
513 | /* If there other units for the same device node have a job | |
514 | queued it might be worth checking again if it is runnable | |
515 | now. This is necessary, since swap_start() refuses | |
516 | operation with EAGAIN if there's already another job for | |
517 | the same device node queued. */ | |
518 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
519 | if (UNIT(other)->job) | |
520 | job_add_to_run_queue(UNIT(other)->job); | |
07b0b134 ML |
521 | } |
522 | ||
be847e82 | 523 | static int swap_coldplug(Unit *u) { |
07b0b134 ML |
524 | Swap *s = SWAP(u); |
525 | SwapState new_state = SWAP_DEAD; | |
e04aad61 | 526 | int r; |
07b0b134 ML |
527 | |
528 | assert(s); | |
529 | assert(s->state == SWAP_DEAD); | |
530 | ||
531 | if (s->deserialized_state != s->state) | |
532 | new_state = s->deserialized_state; | |
4e85aff4 | 533 | else if (s->from_proc_swaps) |
07b0b134 ML |
534 | new_state = SWAP_ACTIVE; |
535 | ||
5bcb0f2b LP |
536 | if (new_state == s->state) |
537 | return 0; | |
e04aad61 | 538 | |
c386f588 LP |
539 | if (s->control_pid > 0 && |
540 | pid_is_unwaited(s->control_pid) && | |
dedf3719 | 541 | SWAP_STATE_WITH_PROCESS(new_state)) { |
e04aad61 | 542 | |
5bcb0f2b LP |
543 | r = unit_watch_pid(UNIT(s), s->control_pid); |
544 | if (r < 0) | |
545 | return r; | |
e04aad61 | 546 | |
36c16a7c | 547 | r = swap_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_usec)); |
5bcb0f2b LP |
548 | if (r < 0) |
549 | return r; | |
e04aad61 | 550 | } |
07b0b134 | 551 | |
29206d46 LP |
552 | if (!IN_SET(new_state, SWAP_DEAD, SWAP_FAILED)) |
553 | (void) unit_setup_dynamic_creds(u); | |
554 | ||
5bcb0f2b | 555 | swap_set_state(s, new_state); |
07b0b134 ML |
556 | return 0; |
557 | } | |
558 | ||
559 | static void swap_dump(Unit *u, FILE *f, const char *prefix) { | |
560 | Swap *s = SWAP(u); | |
4e85aff4 | 561 | SwapParameters *p; |
07b0b134 ML |
562 | |
563 | assert(s); | |
4e85aff4 LP |
564 | assert(f); |
565 | ||
566 | if (s->from_proc_swaps) | |
567 | p = &s->parameters_proc_swaps; | |
568 | else if (s->from_fragment) | |
569 | p = &s->parameters_fragment; | |
b6bfc7bb LP |
570 | else |
571 | p = NULL; | |
07b0b134 ML |
572 | |
573 | fprintf(f, | |
4e85aff4 | 574 | "%sSwap State: %s\n" |
e1770af8 | 575 | "%sResult: %s\n" |
07b0b134 | 576 | "%sWhat: %s\n" |
4e85aff4 LP |
577 | "%sFrom /proc/swaps: %s\n" |
578 | "%sFrom fragment: %s\n", | |
07b0b134 | 579 | prefix, swap_state_to_string(s->state), |
e1770af8 | 580 | prefix, swap_result_to_string(s->result), |
07b0b134 | 581 | prefix, s->what, |
4e85aff4 LP |
582 | prefix, yes_no(s->from_proc_swaps), |
583 | prefix, yes_no(s->from_fragment)); | |
e04aad61 | 584 | |
9670d583 LP |
585 | if (s->devnode) |
586 | fprintf(f, "%sDevice Node: %s\n", prefix, s->devnode); | |
587 | ||
b6bfc7bb LP |
588 | if (p) |
589 | fprintf(f, | |
590 | "%sPriority: %i\n" | |
47cb901e | 591 | "%sOptions: %s\n", |
b6bfc7bb | 592 | prefix, p->priority, |
47cb901e | 593 | prefix, strempty(p->options)); |
b6bfc7bb | 594 | |
e04aad61 LP |
595 | if (s->control_pid > 0) |
596 | fprintf(f, | |
de0671ee ZJS |
597 | "%sControl PID: "PID_FMT"\n", |
598 | prefix, s->control_pid); | |
e04aad61 LP |
599 | |
600 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 601 | kill_context_dump(&s->kill_context, f, prefix); |
18f573aa | 602 | cgroup_context_dump(&s->cgroup_context, f, prefix); |
e04aad61 LP |
603 | } |
604 | ||
605 | static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) { | |
606 | pid_t pid; | |
607 | int r; | |
9fa95f85 | 608 | ExecParameters exec_params = { |
1703fa41 | 609 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
610 | .stdin_fd = -1, |
611 | .stdout_fd = -1, | |
612 | .stderr_fd = -1, | |
9fa95f85 | 613 | }; |
e04aad61 LP |
614 | |
615 | assert(s); | |
616 | assert(c); | |
617 | assert(_pid); | |
618 | ||
5ad096b3 | 619 | (void) unit_realize_cgroup(UNIT(s)); |
906c06f6 DM |
620 | if (s->reset_accounting) { |
621 | (void) unit_reset_cpu_accounting(UNIT(s)); | |
622 | (void) unit_reset_ip_accounting(UNIT(s)); | |
623 | s->reset_accounting = false; | |
5ad096b3 | 624 | } |
4ad49000 | 625 | |
d3070fbd LP |
626 | unit_export_state_files(UNIT(s)); |
627 | ||
613b411c LP |
628 | r = unit_setup_exec_runtime(UNIT(s)); |
629 | if (r < 0) | |
630 | goto fail; | |
631 | ||
29206d46 LP |
632 | r = unit_setup_dynamic_creds(UNIT(s)); |
633 | if (r < 0) | |
3536f49e | 634 | goto fail; |
29206d46 | 635 | |
36c16a7c | 636 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 637 | if (r < 0) |
e04aad61 LP |
638 | goto fail; |
639 | ||
19bbdd98 | 640 | manager_set_exec_params(UNIT(s)->manager, &exec_params); |
f0d47797 | 641 | unit_set_exec_params(UNIT(s), &exec_params); |
9fa95f85 | 642 | |
f2341e0a LP |
643 | r = exec_spawn(UNIT(s), |
644 | c, | |
646134dc | 645 | &s->exec_context, |
9fa95f85 | 646 | &exec_params, |
613b411c | 647 | s->exec_runtime, |
29206d46 | 648 | &s->dynamic_creds, |
646134dc ZJS |
649 | &pid); |
650 | if (r < 0) | |
e04aad61 LP |
651 | goto fail; |
652 | ||
646134dc ZJS |
653 | r = unit_watch_pid(UNIT(s), pid); |
654 | if (r < 0) | |
e04aad61 LP |
655 | /* FIXME: we need to do something here */ |
656 | goto fail; | |
657 | ||
658 | *_pid = pid; | |
659 | ||
660 | return 0; | |
661 | ||
662 | fail: | |
718db961 | 663 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
3536f49e | 664 | |
e04aad61 | 665 | return r; |
07b0b134 ML |
666 | } |
667 | ||
e1770af8 | 668 | static void swap_enter_dead(Swap *s, SwapResult f) { |
07b0b134 ML |
669 | assert(s); |
670 | ||
a0fef983 | 671 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 672 | s->result = f; |
e04aad61 | 673 | |
ed77d407 LP |
674 | if (s->result != SWAP_SUCCESS) |
675 | log_unit_warning(UNIT(s), "Failed with result '%s'.", swap_result_to_string(s->result)); | |
676 | ||
29206d46 LP |
677 | swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD); |
678 | ||
613b411c LP |
679 | exec_runtime_destroy(s->exec_runtime); |
680 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
681 | ||
3536f49e | 682 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 683 | |
00d9ef85 LP |
684 | unit_unref_uid_gid(UNIT(s), true); |
685 | ||
29206d46 | 686 | dynamic_creds_destroy(&s->dynamic_creds); |
07b0b134 ML |
687 | } |
688 | ||
e1770af8 | 689 | static void swap_enter_active(Swap *s, SwapResult f) { |
e04aad61 LP |
690 | assert(s); |
691 | ||
a0fef983 | 692 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 693 | s->result = f; |
e04aad61 LP |
694 | |
695 | swap_set_state(s, SWAP_ACTIVE); | |
696 | } | |
697 | ||
50864457 LP |
698 | static void swap_enter_dead_or_active(Swap *s, SwapResult f) { |
699 | assert(s); | |
700 | ||
701 | if (s->from_proc_swaps) | |
702 | swap_enter_active(s, f); | |
703 | else | |
704 | swap_enter_dead(s, f); | |
705 | } | |
706 | ||
e1770af8 | 707 | static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) { |
07b0b134 | 708 | int r; |
d31ae548 | 709 | KillOperation kop; |
07b0b134 ML |
710 | |
711 | assert(s); | |
e04aad61 | 712 | |
a0fef983 | 713 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 714 | s->result = f; |
e04aad61 | 715 | |
50864457 | 716 | if (state == SWAP_DEACTIVATING_SIGTERM) |
d31ae548 FB |
717 | kop = KILL_TERMINATE; |
718 | else | |
719 | kop = KILL_KILL; | |
720 | ||
721 | r = unit_kill_context(UNIT(s), &s->kill_context, kop, -1, s->control_pid, false); | |
cd2086fe LP |
722 | if (r < 0) |
723 | goto fail; | |
e04aad61 | 724 | |
cd2086fe | 725 | if (r > 0) { |
36c16a7c | 726 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 727 | if (r < 0) |
e04aad61 LP |
728 | goto fail; |
729 | ||
730 | swap_set_state(s, state); | |
50864457 | 731 | } else if (state == SWAP_DEACTIVATING_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb LP |
732 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_SUCCESS); |
733 | else | |
50864457 | 734 | swap_enter_dead_or_active(s, SWAP_SUCCESS); |
e04aad61 LP |
735 | |
736 | return; | |
737 | ||
738 | fail: | |
f2341e0a | 739 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
50864457 | 740 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
741 | } |
742 | ||
743 | static void swap_enter_activating(Swap *s) { | |
bf1d7ba7 KZ |
744 | _cleanup_free_ char *opts = NULL; |
745 | int r; | |
e04aad61 LP |
746 | |
747 | assert(s); | |
748 | ||
749 | s->control_command_id = SWAP_EXEC_ACTIVATE; | |
750 | s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE; | |
07b0b134 | 751 | |
86b23b07 | 752 | if (s->from_fragment) { |
bf1d7ba7 | 753 | int priority = -1; |
47cb901e | 754 | |
bf1d7ba7 KZ |
755 | r = fstab_find_pri(s->parameters_fragment.options, &priority); |
756 | if (r < 0) | |
757 | log_warning_errno(r, "Failed to parse swap priority \"%s\", ignoring: %m", s->parameters_fragment.options); | |
758 | else if (r == 1 && s->parameters_fragment.priority >= 0) | |
759 | log_warning("Duplicate swap priority configuration by Priority and Options fields."); | |
760 | ||
761 | if (r <= 0 && s->parameters_fragment.priority >= 0) { | |
762 | if (s->parameters_fragment.options) | |
763 | r = asprintf(&opts, "%s,pri=%i", s->parameters_fragment.options, s->parameters_fragment.priority); | |
764 | else | |
765 | r = asprintf(&opts, "pri=%i", s->parameters_fragment.priority); | |
e64d5235 | 766 | if (r < 0) |
bf1d7ba7 | 767 | goto fail; |
e64d5235 | 768 | } |
86b23b07 JS |
769 | } |
770 | ||
771 | r = exec_command_set(s->control_command, "/sbin/swapon", NULL); | |
772 | if (r < 0) | |
773 | goto fail; | |
4e85aff4 | 774 | |
bf1d7ba7 KZ |
775 | if (s->parameters_fragment.options || opts) { |
776 | r = exec_command_append(s->control_command, "-o", | |
777 | opts ? : s->parameters_fragment.options, NULL); | |
86b23b07 JS |
778 | if (r < 0) |
779 | goto fail; | |
780 | } | |
e04aad61 | 781 | |
86b23b07 | 782 | r = exec_command_append(s->control_command, s->what, NULL); |
e04aad61 LP |
783 | if (r < 0) |
784 | goto fail; | |
785 | ||
786 | swap_unwatch_control_pid(s); | |
787 | ||
646134dc ZJS |
788 | r = swap_spawn(s, s->control_command, &s->control_pid); |
789 | if (r < 0) | |
e04aad61 LP |
790 | goto fail; |
791 | ||
792 | swap_set_state(s, SWAP_ACTIVATING); | |
793 | ||
794 | return; | |
795 | ||
796 | fail: | |
f2341e0a | 797 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapon' task: %m"); |
50864457 | 798 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
799 | } |
800 | ||
e1770af8 | 801 | static void swap_enter_deactivating(Swap *s) { |
e04aad61 LP |
802 | int r; |
803 | ||
804 | assert(s); | |
805 | ||
e04aad61 LP |
806 | s->control_command_id = SWAP_EXEC_DEACTIVATE; |
807 | s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE; | |
808 | ||
646134dc | 809 | r = exec_command_set(s->control_command, |
e04aad61 LP |
810 | "/sbin/swapoff", |
811 | s->what, | |
646134dc ZJS |
812 | NULL); |
813 | if (r < 0) | |
e04aad61 LP |
814 | goto fail; |
815 | ||
816 | swap_unwatch_control_pid(s); | |
817 | ||
646134dc ZJS |
818 | r = swap_spawn(s, s->control_command, &s->control_pid); |
819 | if (r < 0) | |
e04aad61 LP |
820 | goto fail; |
821 | ||
822 | swap_set_state(s, SWAP_DEACTIVATING); | |
823 | ||
824 | return; | |
825 | ||
826 | fail: | |
f2341e0a | 827 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapoff' task: %m"); |
50864457 | 828 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
829 | } |
830 | ||
831 | static int swap_start(Unit *u) { | |
37cf8fee | 832 | Swap *s = SWAP(u), *other; |
07299350 | 833 | int r; |
e04aad61 LP |
834 | |
835 | assert(s); | |
836 | ||
50864457 | 837 | /* We cannot fulfill this request right now, try again later please! */ |
d31ae548 FB |
838 | if (IN_SET(s->state, |
839 | SWAP_DEACTIVATING, | |
840 | SWAP_DEACTIVATING_SIGTERM, | |
50864457 | 841 | SWAP_DEACTIVATING_SIGKILL)) |
e04aad61 LP |
842 | return -EAGAIN; |
843 | ||
50864457 | 844 | /* Already on it! */ |
e04aad61 LP |
845 | if (s->state == SWAP_ACTIVATING) |
846 | return 0; | |
847 | ||
d31ae548 | 848 | assert(IN_SET(s->state, SWAP_DEAD, SWAP_FAILED)); |
e04aad61 | 849 | |
75f86906 | 850 | if (detect_container() > 0) |
a5c3034f LP |
851 | return -EPERM; |
852 | ||
37cf8fee LP |
853 | /* If there's a job for another swap unit for the same node |
854 | * running, then let's not dispatch this one for now, and wait | |
855 | * until that other job has finished. */ | |
856 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
857 | if (UNIT(other)->job && UNIT(other)->job->state == JOB_RUNNING) | |
858 | return -EAGAIN; | |
859 | ||
07299350 LP |
860 | r = unit_start_limit_test(u); |
861 | if (r < 0) { | |
862 | swap_enter_dead(s, SWAP_FAILURE_START_LIMIT_HIT); | |
863 | return r; | |
864 | } | |
865 | ||
4b58153d LP |
866 | r = unit_acquire_invocation_id(u); |
867 | if (r < 0) | |
868 | return r; | |
869 | ||
e1770af8 | 870 | s->result = SWAP_SUCCESS; |
906c06f6 | 871 | s->reset_accounting = true; |
5ad096b3 | 872 | |
e04aad61 | 873 | swap_enter_activating(s); |
82a2b6bb | 874 | return 1; |
07b0b134 ML |
875 | } |
876 | ||
877 | static int swap_stop(Unit *u) { | |
878 | Swap *s = SWAP(u); | |
07b0b134 ML |
879 | |
880 | assert(s); | |
881 | ||
50864457 LP |
882 | switch (s->state) { |
883 | ||
884 | case SWAP_DEACTIVATING: | |
885 | case SWAP_DEACTIVATING_SIGTERM: | |
886 | case SWAP_DEACTIVATING_SIGKILL: | |
887 | /* Already on it */ | |
e04aad61 | 888 | return 0; |
07b0b134 | 889 | |
50864457 LP |
890 | case SWAP_ACTIVATING: |
891 | case SWAP_ACTIVATING_DONE: | |
892 | /* There's a control process pending, directly enter kill mode */ | |
893 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_SUCCESS); | |
894 | return 0; | |
07b0b134 | 895 | |
50864457 LP |
896 | case SWAP_ACTIVE: |
897 | if (detect_container() > 0) | |
898 | return -EPERM; | |
a5c3034f | 899 | |
50864457 LP |
900 | swap_enter_deactivating(s); |
901 | return 1; | |
902 | ||
903 | default: | |
904 | assert_not_reached("Unexpected state."); | |
905 | } | |
07b0b134 ML |
906 | } |
907 | ||
908 | static int swap_serialize(Unit *u, FILE *f, FDSet *fds) { | |
909 | Swap *s = SWAP(u); | |
910 | ||
911 | assert(s); | |
912 | assert(f); | |
913 | assert(fds); | |
914 | ||
915 | unit_serialize_item(u, f, "state", swap_state_to_string(s->state)); | |
e1770af8 | 916 | unit_serialize_item(u, f, "result", swap_result_to_string(s->result)); |
e04aad61 LP |
917 | |
918 | if (s->control_pid > 0) | |
de0671ee | 919 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
e04aad61 LP |
920 | |
921 | if (s->control_command_id >= 0) | |
922 | unit_serialize_item(u, f, "control-command", swap_exec_command_to_string(s->control_command_id)); | |
07b0b134 ML |
923 | |
924 | return 0; | |
925 | } | |
926 | ||
927 | static int swap_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
928 | Swap *s = SWAP(u); | |
929 | ||
930 | assert(s); | |
931 | assert(fds); | |
932 | ||
933 | if (streq(key, "state")) { | |
934 | SwapState state; | |
935 | ||
646134dc ZJS |
936 | state = swap_state_from_string(value); |
937 | if (state < 0) | |
f2341e0a | 938 | log_unit_debug(u, "Failed to parse state value: %s", value); |
07b0b134 ML |
939 | else |
940 | s->deserialized_state = state; | |
e1770af8 LP |
941 | } else if (streq(key, "result")) { |
942 | SwapResult f; | |
943 | ||
944 | f = swap_result_from_string(value); | |
945 | if (f < 0) | |
f2341e0a | 946 | log_unit_debug(u, "Failed to parse result value: %s", value); |
e1770af8 LP |
947 | else if (f != SWAP_SUCCESS) |
948 | s->result = f; | |
e04aad61 LP |
949 | } else if (streq(key, "control-pid")) { |
950 | pid_t pid; | |
951 | ||
952 | if (parse_pid(value, &pid) < 0) | |
f2341e0a | 953 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
e04aad61 LP |
954 | else |
955 | s->control_pid = pid; | |
956 | ||
957 | } else if (streq(key, "control-command")) { | |
958 | SwapExecCommand id; | |
959 | ||
646134dc ZJS |
960 | id = swap_exec_command_from_string(value); |
961 | if (id < 0) | |
f2341e0a | 962 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
e04aad61 LP |
963 | else { |
964 | s->control_command_id = id; | |
965 | s->control_command = s->exec_command + id; | |
966 | } | |
07b0b134 | 967 | } else |
f2341e0a | 968 | log_unit_debug(u, "Unknown serialization key: %s", key); |
07b0b134 ML |
969 | |
970 | return 0; | |
971 | } | |
972 | ||
44a6b1b6 | 973 | _pure_ static UnitActiveState swap_active_state(Unit *u) { |
07b0b134 ML |
974 | assert(u); |
975 | ||
976 | return state_translation_table[SWAP(u)->state]; | |
977 | } | |
978 | ||
44a6b1b6 | 979 | _pure_ static const char *swap_sub_state_to_string(Unit *u) { |
07b0b134 ML |
980 | assert(u); |
981 | ||
982 | return swap_state_to_string(SWAP(u)->state); | |
983 | } | |
984 | ||
44a6b1b6 | 985 | _pure_ static bool swap_check_gc(Unit *u) { |
07b0b134 ML |
986 | Swap *s = SWAP(u); |
987 | ||
988 | assert(s); | |
989 | ||
6b1dc2bd | 990 | return s->from_proc_swaps; |
07b0b134 ML |
991 | } |
992 | ||
e04aad61 LP |
993 | static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
994 | Swap *s = SWAP(u); | |
e1770af8 | 995 | SwapResult f; |
e04aad61 LP |
996 | |
997 | assert(s); | |
998 | assert(pid >= 0); | |
999 | ||
1000 | if (pid != s->control_pid) | |
1001 | return; | |
1002 | ||
1003 | s->control_pid = 0; | |
1004 | ||
1f0958f6 | 1005 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
e1770af8 LP |
1006 | f = SWAP_SUCCESS; |
1007 | else if (code == CLD_EXITED) | |
1008 | f = SWAP_FAILURE_EXIT_CODE; | |
1009 | else if (code == CLD_KILLED) | |
1010 | f = SWAP_FAILURE_SIGNAL; | |
1011 | else if (code == CLD_DUMPED) | |
1012 | f = SWAP_FAILURE_CORE_DUMP; | |
1013 | else | |
1014 | assert_not_reached("Unknown code"); | |
1015 | ||
a0fef983 | 1016 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 1017 | s->result = f; |
e04aad61 LP |
1018 | |
1019 | if (s->control_command) { | |
6ea832a2 | 1020 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
e1770af8 | 1021 | |
e04aad61 LP |
1022 | s->control_command = NULL; |
1023 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
1024 | } | |
1025 | ||
f2341e0a LP |
1026 | log_unit_full(u, f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1027 | "Swap process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e04aad61 LP |
1028 | |
1029 | switch (s->state) { | |
1030 | ||
1031 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1032 | case SWAP_ACTIVATING_DONE: |
e04aad61 | 1033 | |
50864457 | 1034 | if (f == SWAP_SUCCESS || s->from_proc_swaps) |
e1770af8 | 1035 | swap_enter_active(s, f); |
e04aad61 | 1036 | else |
e1770af8 | 1037 | swap_enter_dead(s, f); |
e04aad61 LP |
1038 | break; |
1039 | ||
1040 | case SWAP_DEACTIVATING: | |
1041 | case SWAP_DEACTIVATING_SIGKILL: | |
1042 | case SWAP_DEACTIVATING_SIGTERM: | |
1043 | ||
50864457 | 1044 | swap_enter_dead_or_active(s, f); |
e04aad61 LP |
1045 | break; |
1046 | ||
1047 | default: | |
1048 | assert_not_reached("Uh, control process died at wrong time."); | |
1049 | } | |
1050 | ||
1051 | /* Notify clients about changed exit status */ | |
1052 | unit_add_to_dbus_queue(u); | |
e04aad61 LP |
1053 | } |
1054 | ||
718db961 LP |
1055 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1056 | Swap *s = SWAP(userdata); | |
e04aad61 LP |
1057 | |
1058 | assert(s); | |
718db961 | 1059 | assert(s->timer_event_source == source); |
e04aad61 LP |
1060 | |
1061 | switch (s->state) { | |
1062 | ||
1063 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1064 | case SWAP_ACTIVATING_DONE: |
f2341e0a | 1065 | log_unit_warning(UNIT(s), "Activation timed out. Stopping."); |
50864457 | 1066 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1067 | break; |
1068 | ||
1069 | case SWAP_DEACTIVATING: | |
f2341e0a | 1070 | log_unit_warning(UNIT(s), "Deactivation timed out. Stopping."); |
e1770af8 | 1071 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1072 | break; |
1073 | ||
e04aad61 | 1074 | case SWAP_DEACTIVATING_SIGTERM: |
4819ff03 | 1075 | if (s->kill_context.send_sigkill) { |
50864457 | 1076 | log_unit_warning(UNIT(s), "Swap process timed out. Killing."); |
e1770af8 | 1077 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1078 | } else { |
50864457 LP |
1079 | log_unit_warning(UNIT(s), "Swap process timed out. Skipping SIGKILL. Ignoring."); |
1080 | swap_enter_dead_or_active(s, SWAP_FAILURE_TIMEOUT); | |
ba035df2 | 1081 | } |
e04aad61 LP |
1082 | break; |
1083 | ||
e04aad61 | 1084 | case SWAP_DEACTIVATING_SIGKILL: |
f2341e0a | 1085 | log_unit_warning(UNIT(s), "Swap process still around after SIGKILL. Ignoring."); |
50864457 | 1086 | swap_enter_dead_or_active(s, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1087 | break; |
1088 | ||
1089 | default: | |
1090 | assert_not_reached("Timeout at wrong time."); | |
1091 | } | |
718db961 LP |
1092 | |
1093 | return 0; | |
e04aad61 LP |
1094 | } |
1095 | ||
1096 | static int swap_load_proc_swaps(Manager *m, bool set_flags) { | |
1097 | unsigned i; | |
1098 | int r = 0; | |
1099 | ||
1100 | assert(m); | |
1101 | ||
07b0b134 | 1102 | rewind(m->proc_swaps); |
bab45044 | 1103 | |
4e85aff4 | 1104 | (void) fscanf(m->proc_swaps, "%*s %*s %*s %*s %*s\n"); |
07b0b134 | 1105 | |
e04aad61 | 1106 | for (i = 1;; i++) { |
9fb3675e | 1107 | _cleanup_free_ char *dev = NULL, *d = NULL; |
07b0b134 ML |
1108 | int prio = 0, k; |
1109 | ||
646134dc ZJS |
1110 | k = fscanf(m->proc_swaps, |
1111 | "%ms " /* device/file */ | |
1112 | "%*s " /* type of swap */ | |
1113 | "%*s " /* swap size */ | |
1114 | "%*s " /* used */ | |
1115 | "%i\n", /* priority */ | |
1116 | &dev, &prio); | |
1117 | if (k != 2) { | |
07b0b134 | 1118 | if (k == EOF) |
4e85aff4 | 1119 | break; |
07b0b134 | 1120 | |
628c89cc | 1121 | log_warning("Failed to parse /proc/swaps:%u.", i); |
e04aad61 | 1122 | continue; |
07b0b134 | 1123 | } |
07b0b134 | 1124 | |
527b7a42 | 1125 | if (cunescape(dev, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1126 | return log_oom(); |
1127 | ||
1128 | device_found_node(m, d, true, DEVICE_FOUND_SWAP, set_flags); | |
4e85aff4 | 1129 | |
628c89cc | 1130 | k = swap_process_new(m, d, prio, set_flags); |
07b0b134 | 1131 | if (k < 0) |
e04aad61 | 1132 | r = k; |
07b0b134 ML |
1133 | } |
1134 | ||
e04aad61 LP |
1135 | return r; |
1136 | } | |
1137 | ||
718db961 LP |
1138 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1139 | Manager *m = userdata; | |
595ed347 | 1140 | Unit *u; |
4e434314 LP |
1141 | int r; |
1142 | ||
1143 | assert(m); | |
718db961 | 1144 | assert(revents & EPOLLPRI); |
4e434314 | 1145 | |
646134dc ZJS |
1146 | r = swap_load_proc_swaps(m, true); |
1147 | if (r < 0) { | |
da927ba9 | 1148 | log_error_errno(r, "Failed to reread /proc/swaps: %m"); |
e04aad61 LP |
1149 | |
1150 | /* Reset flags, just in case, for late calls */ | |
595ed347 MS |
1151 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) { |
1152 | Swap *swap = SWAP(u); | |
e04aad61 LP |
1153 | |
1154 | swap->is_active = swap->just_activated = false; | |
1155 | } | |
1156 | ||
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | manager_dispatch_load_queue(m); | |
1161 | ||
595ed347 MS |
1162 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) { |
1163 | Swap *swap = SWAP(u); | |
e04aad61 LP |
1164 | |
1165 | if (!swap->is_active) { | |
1166 | /* This has just been deactivated */ | |
1167 | ||
e04aad61 LP |
1168 | swap_unset_proc_swaps(swap); |
1169 | ||
1170 | switch (swap->state) { | |
1171 | ||
1172 | case SWAP_ACTIVE: | |
e1770af8 | 1173 | swap_enter_dead(swap, SWAP_SUCCESS); |
e04aad61 LP |
1174 | break; |
1175 | ||
1176 | default: | |
5bcb0f2b | 1177 | /* Fire again */ |
e04aad61 LP |
1178 | swap_set_state(swap, swap->state); |
1179 | break; | |
1180 | } | |
1181 | ||
628c89cc LP |
1182 | if (swap->what) |
1183 | device_found_node(m, swap->what, false, DEVICE_FOUND_SWAP, true); | |
1184 | ||
e04aad61 LP |
1185 | } else if (swap->just_activated) { |
1186 | ||
1187 | /* New swap entry */ | |
1188 | ||
1189 | switch (swap->state) { | |
1190 | ||
1191 | case SWAP_DEAD: | |
1192 | case SWAP_FAILED: | |
4b58153d | 1193 | (void) unit_acquire_invocation_id(UNIT(swap)); |
e1770af8 | 1194 | swap_enter_active(swap, SWAP_SUCCESS); |
e04aad61 LP |
1195 | break; |
1196 | ||
5bcb0f2b LP |
1197 | case SWAP_ACTIVATING: |
1198 | swap_set_state(swap, SWAP_ACTIVATING_DONE); | |
1199 | break; | |
1200 | ||
e04aad61 LP |
1201 | default: |
1202 | /* Nothing really changed, but let's | |
1203 | * issue an notification call | |
1204 | * nonetheless, in case somebody is | |
1205 | * waiting for this. */ | |
1206 | swap_set_state(swap, swap->state); | |
1207 | break; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | /* Reset the flags for later calls */ | |
1212 | swap->is_active = swap->just_activated = false; | |
1213 | } | |
1214 | ||
1215 | return 1; | |
1216 | } | |
1217 | ||
1218 | static Unit *swap_following(Unit *u) { | |
1219 | Swap *s = SWAP(u); | |
1220 | Swap *other, *first = NULL; | |
1221 | ||
1222 | assert(s); | |
1223 | ||
cdc89820 ZJS |
1224 | /* If the user configured the swap through /etc/fstab or |
1225 | * a device unit, follow that. */ | |
1226 | ||
1227 | if (s->from_fragment) | |
e04aad61 LP |
1228 | return NULL; |
1229 | ||
caac2704 | 1230 | LIST_FOREACH_OTHERS(same_devnode, other, s) |
cdc89820 ZJS |
1231 | if (other->from_fragment) |
1232 | return UNIT(other); | |
1233 | ||
b938cb90 | 1234 | /* Otherwise, make everybody follow the unit that's named after |
cdc89820 ZJS |
1235 | * the swap device in the kernel */ |
1236 | ||
1237 | if (streq_ptr(s->what, s->devnode)) | |
1238 | return NULL; | |
e04aad61 | 1239 | |
9670d583 LP |
1240 | LIST_FOREACH_AFTER(same_devnode, other, s) |
1241 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1242 | return UNIT(other); |
1243 | ||
9670d583 LP |
1244 | LIST_FOREACH_BEFORE(same_devnode, other, s) { |
1245 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1246 | return UNIT(other); |
1247 | ||
1248 | first = other; | |
1249 | } | |
1250 | ||
cdc89820 | 1251 | /* Fall back to the first on the list */ |
e04aad61 | 1252 | return UNIT(first); |
07b0b134 ML |
1253 | } |
1254 | ||
6210e7fc | 1255 | static int swap_following_set(Unit *u, Set **_set) { |
5bcb0f2b | 1256 | Swap *s = SWAP(u), *other; |
6210e7fc LP |
1257 | Set *set; |
1258 | int r; | |
1259 | ||
1260 | assert(s); | |
1261 | assert(_set); | |
1262 | ||
9670d583 | 1263 | if (LIST_JUST_US(same_devnode, s)) { |
6210e7fc LP |
1264 | *_set = NULL; |
1265 | return 0; | |
1266 | } | |
1267 | ||
d5099efc | 1268 | set = set_new(NULL); |
5bcb0f2b | 1269 | if (!set) |
6210e7fc LP |
1270 | return -ENOMEM; |
1271 | ||
caac2704 | 1272 | LIST_FOREACH_OTHERS(same_devnode, other, s) { |
5bcb0f2b LP |
1273 | r = set_put(set, other); |
1274 | if (r < 0) | |
6210e7fc | 1275 | goto fail; |
5bcb0f2b | 1276 | } |
6210e7fc LP |
1277 | |
1278 | *_set = set; | |
1279 | return 1; | |
1280 | ||
1281 | fail: | |
1282 | set_free(set); | |
1283 | return r; | |
1284 | } | |
1285 | ||
07b0b134 ML |
1286 | static void swap_shutdown(Manager *m) { |
1287 | assert(m); | |
1288 | ||
718db961 LP |
1289 | m->swap_event_source = sd_event_source_unref(m->swap_event_source); |
1290 | ||
74ca738f | 1291 | m->proc_swaps = safe_fclose(m->proc_swaps); |
e04aad61 | 1292 | |
525d3cc7 | 1293 | m->swaps_by_devnode = hashmap_free(m->swaps_by_devnode); |
07b0b134 ML |
1294 | } |
1295 | ||
ba64af90 | 1296 | static void swap_enumerate(Manager *m) { |
07b0b134 | 1297 | int r; |
9670d583 | 1298 | |
07b0b134 ML |
1299 | assert(m); |
1300 | ||
4e434314 | 1301 | if (!m->proc_swaps) { |
646134dc | 1302 | m->proc_swaps = fopen("/proc/swaps", "re"); |
ba64af90 LP |
1303 | if (!m->proc_swaps) { |
1304 | if (errno == ENOENT) | |
1305 | log_debug("Not swap enabled, skipping enumeration"); | |
1306 | else | |
1307 | log_error_errno(errno, "Failed to open /proc/swaps: %m"); | |
1308 | ||
1309 | return; | |
1310 | } | |
4e434314 | 1311 | |
151b9b96 | 1312 | r = sd_event_add_io(m->event, &m->swap_event_source, fileno(m->proc_swaps), EPOLLPRI, swap_dispatch_io, m); |
ba64af90 LP |
1313 | if (r < 0) { |
1314 | log_error_errno(r, "Failed to watch /proc/swaps: %m"); | |
29083707 | 1315 | goto fail; |
ba64af90 | 1316 | } |
29083707 LP |
1317 | |
1318 | /* Dispatch this before we dispatch SIGCHLD, so that | |
1319 | * we always get the events from /proc/swaps before | |
1320 | * the SIGCHLD of /sbin/swapon. */ | |
1321 | r = sd_event_source_set_priority(m->swap_event_source, -10); | |
ba64af90 LP |
1322 | if (r < 0) { |
1323 | log_error_errno(r, "Failed to change /proc/swaps priority: %m"); | |
718db961 | 1324 | goto fail; |
ba64af90 | 1325 | } |
7dfbe2e3 TG |
1326 | |
1327 | (void) sd_event_source_set_description(m->swap_event_source, "swap-proc"); | |
4e434314 LP |
1328 | } |
1329 | ||
646134dc ZJS |
1330 | r = swap_load_proc_swaps(m, false); |
1331 | if (r < 0) | |
718db961 LP |
1332 | goto fail; |
1333 | ||
ba64af90 | 1334 | return; |
07b0b134 | 1335 | |
718db961 LP |
1336 | fail: |
1337 | swap_shutdown(m); | |
07b0b134 ML |
1338 | } |
1339 | ||
628c89cc | 1340 | int swap_process_device_new(Manager *m, struct udev_device *dev) { |
9670d583 LP |
1341 | struct udev_list_entry *item = NULL, *first = NULL; |
1342 | _cleanup_free_ char *e = NULL; | |
1343 | const char *dn; | |
cabf58b2 | 1344 | Unit *u; |
9670d583 LP |
1345 | int r = 0; |
1346 | ||
1347 | assert(m); | |
1348 | assert(dev); | |
1349 | ||
1350 | dn = udev_device_get_devnode(dev); | |
1351 | if (!dn) | |
1352 | return 0; | |
1353 | ||
7410616c LP |
1354 | r = unit_name_from_path(dn, ".swap", &e); |
1355 | if (r < 0) | |
1356 | return r; | |
9670d583 | 1357 | |
cabf58b2 FB |
1358 | u = manager_get_unit(m, e); |
1359 | if (u) | |
1360 | r = swap_set_devnode(SWAP(u), dn); | |
9670d583 LP |
1361 | |
1362 | first = udev_device_get_devlinks_list_entry(dev); | |
1363 | udev_list_entry_foreach(item, first) { | |
1364 | _cleanup_free_ char *n = NULL; | |
7410616c | 1365 | int q; |
9670d583 | 1366 | |
7410616c LP |
1367 | q = unit_name_from_path(udev_list_entry_get_name(item), ".swap", &n); |
1368 | if (q < 0) | |
1369 | return q; | |
9670d583 | 1370 | |
cabf58b2 FB |
1371 | u = manager_get_unit(m, n); |
1372 | if (u) { | |
1373 | q = swap_set_devnode(SWAP(u), dn); | |
9670d583 LP |
1374 | if (q < 0) |
1375 | r = q; | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | return r; | |
1380 | } | |
1381 | ||
628c89cc | 1382 | int swap_process_device_remove(Manager *m, struct udev_device *dev) { |
9670d583 LP |
1383 | const char *dn; |
1384 | int r = 0; | |
1385 | Swap *s; | |
1386 | ||
1387 | dn = udev_device_get_devnode(dev); | |
1388 | if (!dn) | |
1389 | return 0; | |
1390 | ||
1391 | while ((s = hashmap_get(m->swaps_by_devnode, dn))) { | |
1392 | int q; | |
1393 | ||
1394 | q = swap_set_devnode(s, NULL); | |
1395 | if (q < 0) | |
1396 | r = q; | |
1397 | } | |
1398 | ||
1399 | return r; | |
1400 | } | |
1401 | ||
fdf20a31 | 1402 | static void swap_reset_failed(Unit *u) { |
5632e374 LP |
1403 | Swap *s = SWAP(u); |
1404 | ||
1405 | assert(s); | |
1406 | ||
fdf20a31 | 1407 | if (s->state == SWAP_FAILED) |
5632e374 | 1408 | swap_set_state(s, SWAP_DEAD); |
e04aad61 | 1409 | |
e1770af8 | 1410 | s->result = SWAP_SUCCESS; |
5632e374 LP |
1411 | } |
1412 | ||
718db961 | 1413 | static int swap_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 1414 | return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error); |
8a0867d6 LP |
1415 | } |
1416 | ||
7a7821c8 | 1417 | static int swap_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1418 | Swap *s = SWAP(u); |
7a7821c8 | 1419 | usec_t t; |
68db7a3b ZJS |
1420 | int r; |
1421 | ||
1422 | if (!s->timer_event_source) | |
1423 | return 0; | |
1424 | ||
7a7821c8 | 1425 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
1426 | if (r < 0) |
1427 | return r; | |
7a7821c8 LP |
1428 | if (t == USEC_INFINITY) |
1429 | return 0; | |
68db7a3b | 1430 | |
7a7821c8 | 1431 | *timeout = t; |
68db7a3b ZJS |
1432 | return 1; |
1433 | } | |
1434 | ||
1c2e9646 | 1435 | static bool swap_supported(void) { |
0faacd47 LP |
1436 | static int supported = -1; |
1437 | ||
1438 | /* If swap support is not available in the kernel, or we are | |
1439 | * running in a container we don't support swap units, and any | |
1440 | * attempts to starting one should fail immediately. */ | |
1441 | ||
1442 | if (supported < 0) | |
1443 | supported = | |
1444 | access("/proc/swaps", F_OK) >= 0 && | |
75f86906 | 1445 | detect_container() <= 0; |
0faacd47 LP |
1446 | |
1447 | return supported; | |
1448 | } | |
1449 | ||
291d565a LP |
1450 | static int swap_control_pid(Unit *u) { |
1451 | Swap *s = SWAP(u); | |
1452 | ||
1453 | assert(s); | |
1454 | ||
1455 | return s->control_pid; | |
1456 | } | |
1457 | ||
e04aad61 LP |
1458 | static const char* const swap_exec_command_table[_SWAP_EXEC_COMMAND_MAX] = { |
1459 | [SWAP_EXEC_ACTIVATE] = "ExecActivate", | |
1460 | [SWAP_EXEC_DEACTIVATE] = "ExecDeactivate", | |
1461 | }; | |
1462 | ||
1463 | DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand); | |
1464 | ||
e1770af8 LP |
1465 | static const char* const swap_result_table[_SWAP_RESULT_MAX] = { |
1466 | [SWAP_SUCCESS] = "success", | |
1467 | [SWAP_FAILURE_RESOURCES] = "resources", | |
1468 | [SWAP_FAILURE_TIMEOUT] = "timeout", | |
1469 | [SWAP_FAILURE_EXIT_CODE] = "exit-code", | |
1470 | [SWAP_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1471 | [SWAP_FAILURE_CORE_DUMP] = "core-dump", |
1472 | [SWAP_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
e1770af8 LP |
1473 | }; |
1474 | ||
1475 | DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult); | |
1476 | ||
07b0b134 | 1477 | const UnitVTable swap_vtable = { |
7d17cfbc | 1478 | .object_size = sizeof(Swap), |
718db961 LP |
1479 | .exec_context_offset = offsetof(Swap, exec_context), |
1480 | .cgroup_context_offset = offsetof(Swap, cgroup_context), | |
1481 | .kill_context_offset = offsetof(Swap, kill_context), | |
613b411c | 1482 | .exec_runtime_offset = offsetof(Swap, exec_runtime), |
29206d46 | 1483 | .dynamic_creds_offset = offsetof(Swap, dynamic_creds), |
3ef63c31 | 1484 | |
f975e971 LP |
1485 | .sections = |
1486 | "Unit\0" | |
1487 | "Swap\0" | |
1488 | "Install\0", | |
4ad49000 | 1489 | .private_section = "Swap", |
71645aca | 1490 | |
4e85aff4 | 1491 | .init = swap_init, |
07b0b134 | 1492 | .load = swap_load, |
6e620bec | 1493 | .done = swap_done, |
07b0b134 ML |
1494 | |
1495 | .coldplug = swap_coldplug, | |
1496 | ||
1497 | .dump = swap_dump, | |
1498 | ||
1499 | .start = swap_start, | |
1500 | .stop = swap_stop, | |
1501 | ||
8a0867d6 LP |
1502 | .kill = swap_kill, |
1503 | ||
68db7a3b ZJS |
1504 | .get_timeout = swap_get_timeout, |
1505 | ||
07b0b134 ML |
1506 | .serialize = swap_serialize, |
1507 | .deserialize_item = swap_deserialize_item, | |
1508 | ||
1509 | .active_state = swap_active_state, | |
1510 | .sub_state_to_string = swap_sub_state_to_string, | |
1511 | ||
1512 | .check_gc = swap_check_gc, | |
1513 | ||
e04aad61 | 1514 | .sigchld_event = swap_sigchld_event, |
e04aad61 LP |
1515 | |
1516 | .reset_failed = swap_reset_failed, | |
1517 | ||
291d565a LP |
1518 | .control_pid = swap_control_pid, |
1519 | ||
718db961 | 1520 | .bus_vtable = bus_swap_vtable, |
74c964d3 LP |
1521 | .bus_set_property = bus_swap_set_property, |
1522 | .bus_commit_properties = bus_swap_commit_properties, | |
07b0b134 | 1523 | |
e04aad61 | 1524 | .following = swap_following, |
6210e7fc | 1525 | .following_set = swap_following_set, |
5632e374 | 1526 | |
6e620bec | 1527 | .enumerate = swap_enumerate, |
c6918296 | 1528 | .shutdown = swap_shutdown, |
0faacd47 | 1529 | .supported = swap_supported, |
c6918296 MS |
1530 | |
1531 | .status_message_formats = { | |
1532 | .starting_stopping = { | |
1533 | [0] = "Activating swap %s...", | |
1534 | [1] = "Deactivating swap %s...", | |
1535 | }, | |
1536 | .finished_start_job = { | |
1537 | [JOB_DONE] = "Activated swap %s.", | |
1538 | [JOB_FAILED] = "Failed to activate swap %s.", | |
c6918296 MS |
1539 | [JOB_TIMEOUT] = "Timed out activating swap %s.", |
1540 | }, | |
1541 | .finished_stop_job = { | |
1542 | [JOB_DONE] = "Deactivated swap %s.", | |
1543 | [JOB_FAILED] = "Failed deactivating swap %s.", | |
1544 | [JOB_TIMEOUT] = "Timed out deactivating swap %s.", | |
1545 | }, | |
1546 | }, | |
07b0b134 | 1547 | }; |