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Commit | Line | Data |
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07b0b134 ML |
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 | |
07b0b134 ML |
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. |
07b0b134 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
07b0b134 ML |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
20 | #include <errno.h> | |
07b0b134 ML |
21 | #include <sys/epoll.h> |
22 | #include <sys/stat.h> | |
4f5dd394 | 23 | #include <unistd.h> |
07b0b134 | 24 | |
b4bbcaa9 TA |
25 | #include "libudev.h" |
26 | ||
b5efdb8a | 27 | #include "alloc-util.h" |
07b0b134 | 28 | #include "dbus-swap.h" |
4f5dd394 | 29 | #include "escape.h" |
9a57c629 | 30 | #include "exit-status.h" |
3ffd4af2 | 31 | #include "fd-util.h" |
f97b34a6 | 32 | #include "format-util.h" |
4f5dd394 | 33 | #include "fstab-util.h" |
6bedfcbb | 34 | #include "parse-util.h" |
9eb977db | 35 | #include "path-util.h" |
7b3e062c | 36 | #include "process-util.h" |
4f5dd394 | 37 | #include "special.h" |
8b43440b | 38 | #include "string-table.h" |
07630cea | 39 | #include "string-util.h" |
3ffd4af2 | 40 | #include "swap.h" |
5bcb0f2b | 41 | #include "udev-util.h" |
4f5dd394 LP |
42 | #include "unit-name.h" |
43 | #include "unit.h" | |
44 | #include "virt.h" | |
07b0b134 ML |
45 | |
46 | static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = { | |
47 | [SWAP_DEAD] = UNIT_INACTIVE, | |
e04aad61 | 48 | [SWAP_ACTIVATING] = UNIT_ACTIVATING, |
5bcb0f2b | 49 | [SWAP_ACTIVATING_DONE] = UNIT_ACTIVE, |
07b0b134 | 50 | [SWAP_ACTIVE] = UNIT_ACTIVE, |
e04aad61 LP |
51 | [SWAP_DEACTIVATING] = UNIT_DEACTIVATING, |
52 | [SWAP_ACTIVATING_SIGTERM] = UNIT_DEACTIVATING, | |
53 | [SWAP_ACTIVATING_SIGKILL] = UNIT_DEACTIVATING, | |
54 | [SWAP_DEACTIVATING_SIGTERM] = UNIT_DEACTIVATING, | |
55 | [SWAP_DEACTIVATING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 56 | [SWAP_FAILED] = UNIT_FAILED |
07b0b134 ML |
57 | }; |
58 | ||
718db961 LP |
59 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
60 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
61 | ||
e04aad61 | 62 | static void swap_unset_proc_swaps(Swap *s) { |
9670d583 LP |
63 | assert(s); |
64 | ||
65 | if (!s->from_proc_swaps) | |
66 | return; | |
67 | ||
a1e58e8e | 68 | s->parameters_proc_swaps.what = mfree(s->parameters_proc_swaps.what); |
9670d583 LP |
69 | |
70 | s->from_proc_swaps = false; | |
71 | } | |
72 | ||
73 | static int swap_set_devnode(Swap *s, const char *devnode) { | |
df326b84 | 74 | Hashmap *swaps; |
5bcb0f2b | 75 | Swap *first; |
9670d583 | 76 | int r; |
e04aad61 LP |
77 | |
78 | assert(s); | |
79 | ||
d5099efc | 80 | r = hashmap_ensure_allocated(&UNIT(s)->manager->swaps_by_devnode, &string_hash_ops); |
9670d583 LP |
81 | if (r < 0) |
82 | return r; | |
e04aad61 | 83 | |
9670d583 | 84 | swaps = UNIT(s)->manager->swaps_by_devnode; |
e04aad61 | 85 | |
9670d583 LP |
86 | if (s->devnode) { |
87 | first = hashmap_get(swaps, s->devnode); | |
e04aad61 | 88 | |
9670d583 LP |
89 | LIST_REMOVE(same_devnode, first, s); |
90 | if (first) | |
91 | hashmap_replace(swaps, first->devnode, first); | |
92 | else | |
93 | hashmap_remove(swaps, s->devnode); | |
5bcb0f2b | 94 | |
a1e58e8e | 95 | s->devnode = mfree(s->devnode); |
9670d583 LP |
96 | } |
97 | ||
98 | if (devnode) { | |
99 | s->devnode = strdup(devnode); | |
100 | if (!s->devnode) | |
101 | return -ENOMEM; | |
102 | ||
103 | first = hashmap_get(swaps, s->devnode); | |
104 | LIST_PREPEND(same_devnode, first, s); | |
105 | ||
106 | return hashmap_replace(swaps, first->devnode, first); | |
107 | } | |
108 | ||
109 | return 0; | |
e04aad61 LP |
110 | } |
111 | ||
f6cebb3b | 112 | static void swap_init(Unit *u) { |
6e620bec LP |
113 | Swap *s = SWAP(u); |
114 | ||
115 | assert(s); | |
1124fe6f | 116 | assert(UNIT(s)->load_state == UNIT_STUB); |
6e620bec | 117 | |
1f19a534 | 118 | s->timeout_usec = u->manager->default_timeout_start_usec; |
e04aad61 | 119 | |
ac155bb8 MS |
120 | s->exec_context.std_output = u->manager->default_std_output; |
121 | s->exec_context.std_error = u->manager->default_std_error; | |
085afe36 | 122 | |
6b1dc2bd | 123 | s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1; |
e04aad61 | 124 | |
e1770af8 | 125 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; |
c8f4d764 | 126 | |
5bcb0f2b | 127 | u->ignore_on_isolate = true; |
e04aad61 LP |
128 | } |
129 | ||
130 | static void swap_unwatch_control_pid(Swap *s) { | |
131 | assert(s); | |
132 | ||
133 | if (s->control_pid <= 0) | |
134 | return; | |
135 | ||
136 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
137 | s->control_pid = 0; | |
6e620bec LP |
138 | } |
139 | ||
4e85aff4 LP |
140 | static void swap_done(Unit *u) { |
141 | Swap *s = SWAP(u); | |
07b0b134 | 142 | |
4e85aff4 | 143 | assert(s); |
07b0b134 | 144 | |
e04aad61 | 145 | swap_unset_proc_swaps(s); |
9670d583 | 146 | swap_set_devnode(s, NULL); |
e04aad61 | 147 | |
a1e58e8e LP |
148 | s->what = mfree(s->what); |
149 | s->parameters_fragment.what = mfree(s->parameters_fragment.what); | |
150 | s->parameters_fragment.options = mfree(s->parameters_fragment.options); | |
86b23b07 | 151 | |
613b411c | 152 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); |
e04aad61 LP |
153 | exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); |
154 | s->control_command = NULL; | |
155 | ||
29206d46 LP |
156 | dynamic_creds_unref(&s->dynamic_creds); |
157 | ||
e04aad61 LP |
158 | swap_unwatch_control_pid(s); |
159 | ||
718db961 LP |
160 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
161 | } | |
162 | ||
36c16a7c | 163 | static int swap_arm_timer(Swap *s, usec_t usec) { |
718db961 LP |
164 | int r; |
165 | ||
166 | assert(s); | |
167 | ||
718db961 | 168 | if (s->timer_event_source) { |
36c16a7c | 169 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
170 | if (r < 0) |
171 | return r; | |
172 | ||
173 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
174 | } | |
175 | ||
36c16a7c LP |
176 | if (usec == USEC_INFINITY) |
177 | return 0; | |
178 | ||
7dfbe2e3 | 179 | r = sd_event_add_time( |
6a0f1f6d LP |
180 | UNIT(s)->manager->event, |
181 | &s->timer_event_source, | |
182 | CLOCK_MONOTONIC, | |
36c16a7c | 183 | usec, 0, |
6a0f1f6d | 184 | swap_dispatch_timer, s); |
7dfbe2e3 TG |
185 | if (r < 0) |
186 | return r; | |
187 | ||
188 | (void) sd_event_source_set_description(s->timer_event_source, "swap-timer"); | |
189 | ||
190 | return 0; | |
07b0b134 ML |
191 | } |
192 | ||
173a8d04 | 193 | static int swap_add_device_links(Swap *s) { |
173a8d04 LP |
194 | assert(s); |
195 | ||
196 | if (!s->what) | |
197 | return 0; | |
198 | ||
f10af76d LP |
199 | if (!s->from_fragment) |
200 | return 0; | |
201 | ||
cfcfd4ae | 202 | if (is_device_path(s->what)) |
463d0d15 | 203 | return unit_add_node_link(UNIT(s), s->what, MANAGER_IS_SYSTEM(UNIT(s)->manager), UNIT_BINDS_TO); |
cfcfd4ae LP |
204 | else |
205 | /* File based swap devices need to be ordered after | |
2b93b027 | 206 | * systemd-remount-fs.service, since they might need a |
cfcfd4ae | 207 | * writable file system. */ |
2b93b027 | 208 | return unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_REMOUNT_FS_SERVICE, NULL, true); |
173a8d04 LP |
209 | } |
210 | ||
2edd4434 | 211 | static int swap_add_default_dependencies(Swap *s) { |
8bf23dc7 FB |
212 | int r; |
213 | ||
2edd4434 LP |
214 | assert(s); |
215 | ||
4c9ea260 LP |
216 | if (!UNIT(s)->default_dependencies) |
217 | return 0; | |
218 | ||
463d0d15 | 219 | if (!MANAGER_IS_SYSTEM(UNIT(s)->manager)) |
6b1dc2bd | 220 | return 0; |
2edd4434 | 221 | |
75f86906 | 222 | if (detect_container() > 0) |
c0387ebf LP |
223 | return 0; |
224 | ||
8bf23dc7 FB |
225 | /* swap units generated for the swap dev links are missing the |
226 | * ordering dep against the swap target. */ | |
227 | r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SWAP_TARGET, NULL, true); | |
228 | if (r < 0) | |
229 | return r; | |
230 | ||
5607d856 | 231 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); |
2edd4434 LP |
232 | } |
233 | ||
4e85aff4 | 234 | static int swap_verify(Swap *s) { |
7fd1b19b | 235 | _cleanup_free_ char *e = NULL; |
7410616c | 236 | int r; |
4e85aff4 | 237 | |
1124fe6f | 238 | if (UNIT(s)->load_state != UNIT_LOADED) |
5bcb0f2b | 239 | return 0; |
4e85aff4 | 240 | |
7410616c LP |
241 | r = unit_name_from_path(s->what, ".swap", &e); |
242 | if (r < 0) | |
f2341e0a | 243 | return log_unit_error_errno(UNIT(s), r, "Failed to generate unit name from path: %m"); |
4e85aff4 | 244 | |
7410616c | 245 | if (!unit_has_name(UNIT(s), e)) { |
f2341e0a | 246 | log_unit_error(UNIT(s), "Value of What= and unit name do not match, not loading."); |
4e85aff4 LP |
247 | return -EINVAL; |
248 | } | |
249 | ||
4819ff03 | 250 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 251 | log_unit_error(UNIT(s), "Unit has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load."); |
e04aad61 LP |
252 | return -EINVAL; |
253 | } | |
254 | ||
4e85aff4 LP |
255 | return 0; |
256 | } | |
257 | ||
9670d583 LP |
258 | static int swap_load_devnode(Swap *s) { |
259 | _cleanup_udev_device_unref_ struct udev_device *d = NULL; | |
260 | struct stat st; | |
261 | const char *p; | |
262 | ||
263 | assert(s); | |
264 | ||
265 | if (stat(s->what, &st) < 0 || !S_ISBLK(st.st_mode)) | |
266 | return 0; | |
267 | ||
268 | d = udev_device_new_from_devnum(UNIT(s)->manager->udev, 'b', st.st_rdev); | |
269 | if (!d) | |
270 | return 0; | |
271 | ||
272 | p = udev_device_get_devnode(d); | |
273 | if (!p) | |
274 | return 0; | |
275 | ||
276 | return swap_set_devnode(s, p); | |
277 | } | |
278 | ||
07b0b134 ML |
279 | static int swap_load(Unit *u) { |
280 | int r; | |
281 | Swap *s = SWAP(u); | |
282 | ||
283 | assert(s); | |
ac155bb8 | 284 | assert(u->load_state == UNIT_STUB); |
07b0b134 ML |
285 | |
286 | /* Load a .swap file */ | |
646134dc ZJS |
287 | r = unit_load_fragment_and_dropin_optional(u); |
288 | if (r < 0) | |
07b0b134 ML |
289 | return r; |
290 | ||
ac155bb8 | 291 | if (u->load_state == UNIT_LOADED) { |
4e85aff4 | 292 | |
1124fe6f | 293 | if (UNIT(s)->fragment_path) |
4e85aff4 LP |
294 | s->from_fragment = true; |
295 | ||
296 | if (!s->what) { | |
297 | if (s->parameters_fragment.what) | |
298 | s->what = strdup(s->parameters_fragment.what); | |
4e85aff4 LP |
299 | else if (s->parameters_proc_swaps.what) |
300 | s->what = strdup(s->parameters_proc_swaps.what); | |
7410616c LP |
301 | else { |
302 | r = unit_name_to_path(u->id, &s->what); | |
303 | if (r < 0) | |
304 | return r; | |
305 | } | |
4e85aff4 LP |
306 | |
307 | if (!s->what) | |
07b0b134 | 308 | return -ENOMEM; |
4e85aff4 | 309 | } |
07b0b134 ML |
310 | |
311 | path_kill_slashes(s->what); | |
312 | ||
5bcb0f2b LP |
313 | if (!UNIT(s)->description) { |
314 | r = unit_set_description(u, s->what); | |
315 | if (r < 0) | |
4e85aff4 | 316 | return r; |
5bcb0f2b | 317 | } |
4e85aff4 | 318 | |
a57f7e2c | 319 | r = unit_require_mounts_for(UNIT(s), s->what); |
646134dc | 320 | if (r < 0) |
07b0b134 ML |
321 | return r; |
322 | ||
a57f7e2c | 323 | r = swap_add_device_links(s); |
646134dc | 324 | if (r < 0) |
6e2ef85b | 325 | return r; |
07b0b134 | 326 | |
9670d583 LP |
327 | r = swap_load_devnode(s); |
328 | if (r < 0) | |
329 | return r; | |
330 | ||
598459ce LP |
331 | r = unit_patch_contexts(u); |
332 | if (r < 0) | |
333 | return r; | |
334 | ||
335 | r = unit_add_exec_dependencies(u, &s->exec_context); | |
336 | if (r < 0) | |
337 | return r; | |
338 | ||
d79200e2 | 339 | r = unit_set_default_slice(u); |
a016b922 LP |
340 | if (r < 0) |
341 | return r; | |
342 | ||
4c9ea260 LP |
343 | r = swap_add_default_dependencies(s); |
344 | if (r < 0) | |
345 | return r; | |
07b0b134 ML |
346 | } |
347 | ||
348 | return swap_verify(s); | |
349 | } | |
350 | ||
628c89cc | 351 | static int swap_setup_unit( |
4e85aff4 LP |
352 | Manager *m, |
353 | const char *what, | |
e04aad61 | 354 | const char *what_proc_swaps, |
4e85aff4 | 355 | int priority, |
e04aad61 LP |
356 | bool set_flags) { |
357 | ||
7fd1b19b | 358 | _cleanup_free_ char *e = NULL; |
2c7c6144 | 359 | bool delete = false; |
5bcb0f2b | 360 | Unit *u = NULL; |
07b0b134 | 361 | int r; |
4e85aff4 LP |
362 | SwapParameters *p; |
363 | ||
364 | assert(m); | |
365 | assert(what); | |
6b1dc2bd | 366 | assert(what_proc_swaps); |
07b0b134 | 367 | |
7410616c LP |
368 | r = unit_name_from_path(what, ".swap", &e); |
369 | if (r < 0) | |
f2341e0a | 370 | return log_unit_error_errno(u, r, "Failed to generate unit name from path: %m"); |
07b0b134 | 371 | |
e04aad61 LP |
372 | u = manager_get_unit(m, e); |
373 | ||
6b1dc2bd | 374 | if (u && |
e04aad61 | 375 | SWAP(u)->from_proc_swaps && |
628c89cc LP |
376 | !path_equal(SWAP(u)->parameters_proc_swaps.what, what_proc_swaps)) { |
377 | log_error("Swap %s appeared twice with different device paths %s and %s", e, SWAP(u)->parameters_proc_swaps.what, what_proc_swaps); | |
e04aad61 | 378 | return -EEXIST; |
628c89cc | 379 | } |
4e85aff4 LP |
380 | |
381 | if (!u) { | |
07b0b134 ML |
382 | delete = true; |
383 | ||
a581e45a | 384 | r = unit_new_for_name(m, sizeof(Swap), e, &u); |
7d17cfbc | 385 | if (r < 0) |
e04aad61 LP |
386 | goto fail; |
387 | ||
7d17cfbc MS |
388 | SWAP(u)->what = strdup(what); |
389 | if (!SWAP(u)->what) { | |
628c89cc | 390 | r = -ENOMEM; |
e04aad61 LP |
391 | goto fail; |
392 | } | |
393 | ||
394 | unit_add_to_load_queue(u); | |
4e85aff4 LP |
395 | } else |
396 | delete = false; | |
07b0b134 | 397 | |
6b1dc2bd | 398 | p = &SWAP(u)->parameters_proc_swaps; |
07b0b134 | 399 | |
6b1dc2bd | 400 | if (!p->what) { |
5bcb0f2b LP |
401 | p->what = strdup(what_proc_swaps); |
402 | if (!p->what) { | |
403 | r = -ENOMEM; | |
6b1dc2bd LP |
404 | goto fail; |
405 | } | |
6b1dc2bd | 406 | } |
e04aad61 | 407 | |
6b1dc2bd LP |
408 | if (set_flags) { |
409 | SWAP(u)->is_active = true; | |
410 | SWAP(u)->just_activated = !SWAP(u)->from_proc_swaps; | |
4e85aff4 | 411 | } |
07b0b134 | 412 | |
6b1dc2bd LP |
413 | SWAP(u)->from_proc_swaps = true; |
414 | ||
4e85aff4 | 415 | p->priority = priority; |
07b0b134 | 416 | |
4e85aff4 | 417 | unit_add_to_dbus_queue(u); |
07b0b134 ML |
418 | return 0; |
419 | ||
420 | fail: | |
f2341e0a | 421 | log_unit_warning_errno(u, r, "Failed to load swap unit: %m"); |
e04aad61 | 422 | |
c9d5c9c0 | 423 | if (delete) |
07b0b134 ML |
424 | unit_free(u); |
425 | ||
4e85aff4 | 426 | return r; |
07b0b134 ML |
427 | } |
428 | ||
628c89cc | 429 | static int swap_process_new(Manager *m, const char *device, int prio, bool set_flags) { |
5bcb0f2b LP |
430 | _cleanup_udev_device_unref_ struct udev_device *d = NULL; |
431 | struct udev_list_entry *item = NULL, *first = NULL; | |
432 | const char *dn; | |
e04aad61 | 433 | struct stat st; |
5bcb0f2b | 434 | int r; |
e04aad61 LP |
435 | |
436 | assert(m); | |
437 | ||
628c89cc | 438 | r = swap_setup_unit(m, device, device, prio, set_flags); |
5bcb0f2b LP |
439 | if (r < 0) |
440 | return r; | |
e04aad61 | 441 | |
5bcb0f2b LP |
442 | /* If this is a block device, then let's add duplicates for |
443 | * all other names of this block device */ | |
444 | if (stat(device, &st) < 0 || !S_ISBLK(st.st_mode)) | |
445 | return 0; | |
e04aad61 | 446 | |
5bcb0f2b LP |
447 | d = udev_device_new_from_devnum(m->udev, 'b', st.st_rdev); |
448 | if (!d) | |
449 | return 0; | |
e04aad61 | 450 | |
5bcb0f2b LP |
451 | /* Add the main device node */ |
452 | dn = udev_device_get_devnode(d); | |
453 | if (dn && !streq(dn, device)) | |
628c89cc | 454 | swap_setup_unit(m, dn, device, prio, set_flags); |
e04aad61 | 455 | |
5bcb0f2b LP |
456 | /* Add additional units for all symlinks */ |
457 | first = udev_device_get_devlinks_list_entry(d); | |
458 | udev_list_entry_foreach(item, first) { | |
459 | const char *p; | |
e04aad61 | 460 | |
5bcb0f2b LP |
461 | /* Don't bother with the /dev/block links */ |
462 | p = udev_list_entry_get_name(item); | |
e04aad61 | 463 | |
5bcb0f2b LP |
464 | if (streq(p, device)) |
465 | continue; | |
e04aad61 | 466 | |
5bcb0f2b LP |
467 | if (path_startswith(p, "/dev/block/")) |
468 | continue; | |
e04aad61 | 469 | |
5bcb0f2b LP |
470 | if (stat(p, &st) >= 0) |
471 | if (!S_ISBLK(st.st_mode) || | |
472 | st.st_rdev != udev_device_get_devnum(d)) | |
473 | continue; | |
e04aad61 | 474 | |
628c89cc | 475 | swap_setup_unit(m, p, device, prio, set_flags); |
e04aad61 LP |
476 | } |
477 | ||
e04aad61 LP |
478 | return r; |
479 | } | |
480 | ||
07b0b134 ML |
481 | static void swap_set_state(Swap *s, SwapState state) { |
482 | SwapState old_state; | |
37cf8fee | 483 | Swap *other; |
e04aad61 | 484 | |
07b0b134 ML |
485 | assert(s); |
486 | ||
487 | old_state = s->state; | |
488 | s->state = state; | |
489 | ||
d31ae548 FB |
490 | if (!IN_SET(state, |
491 | SWAP_ACTIVATING, | |
492 | SWAP_ACTIVATING_SIGTERM, | |
493 | SWAP_ACTIVATING_SIGKILL, | |
494 | SWAP_ACTIVATING_DONE, | |
495 | SWAP_DEACTIVATING, | |
496 | SWAP_DEACTIVATING_SIGTERM, | |
497 | SWAP_DEACTIVATING_SIGKILL)) { | |
718db961 | 498 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
e04aad61 LP |
499 | swap_unwatch_control_pid(s); |
500 | s->control_command = NULL; | |
501 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
502 | } | |
503 | ||
07b0b134 | 504 | if (state != old_state) |
f2341e0a | 505 | log_unit_debug(UNIT(s), "Changed %s -> %s", swap_state_to_string(old_state), swap_state_to_string(state)); |
07b0b134 | 506 | |
5bcb0f2b | 507 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true); |
37cf8fee LP |
508 | |
509 | /* If there other units for the same device node have a job | |
510 | queued it might be worth checking again if it is runnable | |
511 | now. This is necessary, since swap_start() refuses | |
512 | operation with EAGAIN if there's already another job for | |
513 | the same device node queued. */ | |
514 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
515 | if (UNIT(other)->job) | |
516 | job_add_to_run_queue(UNIT(other)->job); | |
07b0b134 ML |
517 | } |
518 | ||
be847e82 | 519 | static int swap_coldplug(Unit *u) { |
07b0b134 ML |
520 | Swap *s = SWAP(u); |
521 | SwapState new_state = SWAP_DEAD; | |
e04aad61 | 522 | int r; |
07b0b134 ML |
523 | |
524 | assert(s); | |
525 | assert(s->state == SWAP_DEAD); | |
526 | ||
527 | if (s->deserialized_state != s->state) | |
528 | new_state = s->deserialized_state; | |
4e85aff4 | 529 | else if (s->from_proc_swaps) |
07b0b134 ML |
530 | new_state = SWAP_ACTIVE; |
531 | ||
5bcb0f2b LP |
532 | if (new_state == s->state) |
533 | return 0; | |
e04aad61 | 534 | |
c386f588 LP |
535 | if (s->control_pid > 0 && |
536 | pid_is_unwaited(s->control_pid) && | |
537 | IN_SET(new_state, | |
538 | SWAP_ACTIVATING, | |
539 | SWAP_ACTIVATING_SIGTERM, | |
540 | SWAP_ACTIVATING_SIGKILL, | |
541 | SWAP_ACTIVATING_DONE, | |
542 | SWAP_DEACTIVATING, | |
543 | SWAP_DEACTIVATING_SIGTERM, | |
544 | SWAP_DEACTIVATING_SIGKILL)) { | |
e04aad61 | 545 | |
5bcb0f2b LP |
546 | r = unit_watch_pid(UNIT(s), s->control_pid); |
547 | if (r < 0) | |
548 | return r; | |
e04aad61 | 549 | |
36c16a7c | 550 | r = swap_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_usec)); |
5bcb0f2b LP |
551 | if (r < 0) |
552 | return r; | |
e04aad61 | 553 | } |
07b0b134 | 554 | |
29206d46 LP |
555 | if (!IN_SET(new_state, SWAP_DEAD, SWAP_FAILED)) |
556 | (void) unit_setup_dynamic_creds(u); | |
557 | ||
5bcb0f2b | 558 | swap_set_state(s, new_state); |
07b0b134 ML |
559 | return 0; |
560 | } | |
561 | ||
562 | static void swap_dump(Unit *u, FILE *f, const char *prefix) { | |
563 | Swap *s = SWAP(u); | |
4e85aff4 | 564 | SwapParameters *p; |
07b0b134 ML |
565 | |
566 | assert(s); | |
4e85aff4 LP |
567 | assert(f); |
568 | ||
569 | if (s->from_proc_swaps) | |
570 | p = &s->parameters_proc_swaps; | |
571 | else if (s->from_fragment) | |
572 | p = &s->parameters_fragment; | |
b6bfc7bb LP |
573 | else |
574 | p = NULL; | |
07b0b134 ML |
575 | |
576 | fprintf(f, | |
4e85aff4 | 577 | "%sSwap State: %s\n" |
e1770af8 | 578 | "%sResult: %s\n" |
07b0b134 | 579 | "%sWhat: %s\n" |
4e85aff4 LP |
580 | "%sFrom /proc/swaps: %s\n" |
581 | "%sFrom fragment: %s\n", | |
07b0b134 | 582 | prefix, swap_state_to_string(s->state), |
e1770af8 | 583 | prefix, swap_result_to_string(s->result), |
07b0b134 | 584 | prefix, s->what, |
4e85aff4 LP |
585 | prefix, yes_no(s->from_proc_swaps), |
586 | prefix, yes_no(s->from_fragment)); | |
e04aad61 | 587 | |
9670d583 LP |
588 | if (s->devnode) |
589 | fprintf(f, "%sDevice Node: %s\n", prefix, s->devnode); | |
590 | ||
b6bfc7bb LP |
591 | if (p) |
592 | fprintf(f, | |
593 | "%sPriority: %i\n" | |
47cb901e | 594 | "%sOptions: %s\n", |
b6bfc7bb | 595 | prefix, p->priority, |
47cb901e | 596 | prefix, strempty(p->options)); |
b6bfc7bb | 597 | |
e04aad61 LP |
598 | if (s->control_pid > 0) |
599 | fprintf(f, | |
de0671ee ZJS |
600 | "%sControl PID: "PID_FMT"\n", |
601 | prefix, s->control_pid); | |
e04aad61 LP |
602 | |
603 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 604 | kill_context_dump(&s->kill_context, f, prefix); |
18f573aa | 605 | cgroup_context_dump(&s->cgroup_context, f, prefix); |
e04aad61 LP |
606 | } |
607 | ||
608 | static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) { | |
609 | pid_t pid; | |
610 | int r; | |
9fa95f85 | 611 | ExecParameters exec_params = { |
1703fa41 | 612 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
613 | .stdin_fd = -1, |
614 | .stdout_fd = -1, | |
615 | .stderr_fd = -1, | |
9fa95f85 | 616 | }; |
e04aad61 LP |
617 | |
618 | assert(s); | |
619 | assert(c); | |
620 | assert(_pid); | |
621 | ||
5ad096b3 LP |
622 | (void) unit_realize_cgroup(UNIT(s)); |
623 | if (s->reset_cpu_usage) { | |
624 | (void) unit_reset_cpu_usage(UNIT(s)); | |
625 | s->reset_cpu_usage = false; | |
626 | } | |
4ad49000 | 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 | |
29206d46 LP |
674 | swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD); |
675 | ||
613b411c LP |
676 | exec_runtime_destroy(s->exec_runtime); |
677 | s->exec_runtime = exec_runtime_unref(s->exec_runtime); | |
678 | ||
3536f49e | 679 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 680 | |
00d9ef85 LP |
681 | unit_unref_uid_gid(UNIT(s), true); |
682 | ||
29206d46 | 683 | dynamic_creds_destroy(&s->dynamic_creds); |
07b0b134 ML |
684 | } |
685 | ||
e1770af8 | 686 | static void swap_enter_active(Swap *s, SwapResult f) { |
e04aad61 LP |
687 | assert(s); |
688 | ||
a0fef983 | 689 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 690 | s->result = f; |
e04aad61 LP |
691 | |
692 | swap_set_state(s, SWAP_ACTIVE); | |
693 | } | |
694 | ||
e1770af8 | 695 | static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) { |
07b0b134 | 696 | int r; |
d31ae548 | 697 | KillOperation kop; |
07b0b134 ML |
698 | |
699 | assert(s); | |
e04aad61 | 700 | |
a0fef983 | 701 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 702 | s->result = f; |
e04aad61 | 703 | |
d31ae548 FB |
704 | if (IN_SET(state, SWAP_ACTIVATING_SIGTERM, SWAP_DEACTIVATING_SIGTERM)) |
705 | kop = KILL_TERMINATE; | |
706 | else | |
707 | kop = KILL_KILL; | |
708 | ||
709 | r = unit_kill_context(UNIT(s), &s->kill_context, kop, -1, s->control_pid, false); | |
cd2086fe LP |
710 | if (r < 0) |
711 | goto fail; | |
e04aad61 | 712 | |
cd2086fe | 713 | if (r > 0) { |
36c16a7c | 714 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 715 | if (r < 0) |
e04aad61 LP |
716 | goto fail; |
717 | ||
718 | swap_set_state(s, state); | |
ac84d1fb LP |
719 | } else if (state == SWAP_ACTIVATING_SIGTERM) |
720 | swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_SUCCESS); | |
721 | else if (state == SWAP_DEACTIVATING_SIGTERM) | |
722 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_SUCCESS); | |
723 | else | |
e1770af8 | 724 | swap_enter_dead(s, SWAP_SUCCESS); |
e04aad61 LP |
725 | |
726 | return; | |
727 | ||
728 | fail: | |
f2341e0a | 729 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
e1770af8 | 730 | swap_enter_dead(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
731 | } |
732 | ||
733 | static void swap_enter_activating(Swap *s) { | |
bf1d7ba7 KZ |
734 | _cleanup_free_ char *opts = NULL; |
735 | int r; | |
e04aad61 LP |
736 | |
737 | assert(s); | |
738 | ||
739 | s->control_command_id = SWAP_EXEC_ACTIVATE; | |
740 | s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE; | |
07b0b134 | 741 | |
86b23b07 | 742 | if (s->from_fragment) { |
bf1d7ba7 | 743 | int priority = -1; |
47cb901e | 744 | |
bf1d7ba7 KZ |
745 | r = fstab_find_pri(s->parameters_fragment.options, &priority); |
746 | if (r < 0) | |
747 | log_warning_errno(r, "Failed to parse swap priority \"%s\", ignoring: %m", s->parameters_fragment.options); | |
748 | else if (r == 1 && s->parameters_fragment.priority >= 0) | |
749 | log_warning("Duplicate swap priority configuration by Priority and Options fields."); | |
750 | ||
751 | if (r <= 0 && s->parameters_fragment.priority >= 0) { | |
752 | if (s->parameters_fragment.options) | |
753 | r = asprintf(&opts, "%s,pri=%i", s->parameters_fragment.options, s->parameters_fragment.priority); | |
754 | else | |
755 | r = asprintf(&opts, "pri=%i", s->parameters_fragment.priority); | |
e64d5235 | 756 | if (r < 0) |
bf1d7ba7 | 757 | goto fail; |
e64d5235 | 758 | } |
86b23b07 JS |
759 | } |
760 | ||
761 | r = exec_command_set(s->control_command, "/sbin/swapon", NULL); | |
762 | if (r < 0) | |
763 | goto fail; | |
4e85aff4 | 764 | |
bf1d7ba7 KZ |
765 | if (s->parameters_fragment.options || opts) { |
766 | r = exec_command_append(s->control_command, "-o", | |
767 | opts ? : s->parameters_fragment.options, NULL); | |
86b23b07 JS |
768 | if (r < 0) |
769 | goto fail; | |
770 | } | |
e04aad61 | 771 | |
86b23b07 | 772 | r = exec_command_append(s->control_command, s->what, NULL); |
e04aad61 LP |
773 | if (r < 0) |
774 | goto fail; | |
775 | ||
776 | swap_unwatch_control_pid(s); | |
777 | ||
646134dc ZJS |
778 | r = swap_spawn(s, s->control_command, &s->control_pid); |
779 | if (r < 0) | |
e04aad61 LP |
780 | goto fail; |
781 | ||
782 | swap_set_state(s, SWAP_ACTIVATING); | |
783 | ||
784 | return; | |
785 | ||
786 | fail: | |
f2341e0a | 787 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapon' task: %m"); |
e1770af8 | 788 | swap_enter_dead(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
789 | } |
790 | ||
e1770af8 | 791 | static void swap_enter_deactivating(Swap *s) { |
e04aad61 LP |
792 | int r; |
793 | ||
794 | assert(s); | |
795 | ||
e04aad61 LP |
796 | s->control_command_id = SWAP_EXEC_DEACTIVATE; |
797 | s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE; | |
798 | ||
646134dc | 799 | r = exec_command_set(s->control_command, |
e04aad61 LP |
800 | "/sbin/swapoff", |
801 | s->what, | |
646134dc ZJS |
802 | NULL); |
803 | if (r < 0) | |
e04aad61 LP |
804 | goto fail; |
805 | ||
806 | swap_unwatch_control_pid(s); | |
807 | ||
646134dc ZJS |
808 | r = swap_spawn(s, s->control_command, &s->control_pid); |
809 | if (r < 0) | |
e04aad61 LP |
810 | goto fail; |
811 | ||
812 | swap_set_state(s, SWAP_DEACTIVATING); | |
813 | ||
814 | return; | |
815 | ||
816 | fail: | |
f2341e0a | 817 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapoff' task: %m"); |
e1770af8 | 818 | swap_enter_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
819 | } |
820 | ||
821 | static int swap_start(Unit *u) { | |
37cf8fee | 822 | Swap *s = SWAP(u), *other; |
07299350 | 823 | int r; |
e04aad61 LP |
824 | |
825 | assert(s); | |
826 | ||
827 | /* We cannot fulfill this request right now, try again later | |
828 | * please! */ | |
829 | ||
d31ae548 FB |
830 | if (IN_SET(s->state, |
831 | SWAP_DEACTIVATING, | |
832 | SWAP_DEACTIVATING_SIGTERM, | |
833 | SWAP_DEACTIVATING_SIGKILL, | |
834 | SWAP_ACTIVATING_SIGTERM, | |
835 | SWAP_ACTIVATING_SIGKILL)) | |
e04aad61 LP |
836 | return -EAGAIN; |
837 | ||
838 | if (s->state == SWAP_ACTIVATING) | |
839 | return 0; | |
840 | ||
d31ae548 | 841 | assert(IN_SET(s->state, SWAP_DEAD, SWAP_FAILED)); |
e04aad61 | 842 | |
75f86906 | 843 | if (detect_container() > 0) |
a5c3034f LP |
844 | return -EPERM; |
845 | ||
37cf8fee LP |
846 | /* If there's a job for another swap unit for the same node |
847 | * running, then let's not dispatch this one for now, and wait | |
848 | * until that other job has finished. */ | |
849 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
850 | if (UNIT(other)->job && UNIT(other)->job->state == JOB_RUNNING) | |
851 | return -EAGAIN; | |
852 | ||
07299350 LP |
853 | r = unit_start_limit_test(u); |
854 | if (r < 0) { | |
855 | swap_enter_dead(s, SWAP_FAILURE_START_LIMIT_HIT); | |
856 | return r; | |
857 | } | |
858 | ||
4b58153d LP |
859 | r = unit_acquire_invocation_id(u); |
860 | if (r < 0) | |
861 | return r; | |
862 | ||
e1770af8 | 863 | s->result = SWAP_SUCCESS; |
5ad096b3 LP |
864 | s->reset_cpu_usage = true; |
865 | ||
e04aad61 | 866 | swap_enter_activating(s); |
82a2b6bb | 867 | return 1; |
07b0b134 ML |
868 | } |
869 | ||
870 | static int swap_stop(Unit *u) { | |
871 | Swap *s = SWAP(u); | |
07b0b134 ML |
872 | |
873 | assert(s); | |
874 | ||
d31ae548 FB |
875 | if (IN_SET(s->state, |
876 | SWAP_DEACTIVATING, | |
877 | SWAP_DEACTIVATING_SIGTERM, | |
878 | SWAP_DEACTIVATING_SIGKILL, | |
879 | SWAP_ACTIVATING_SIGTERM, | |
880 | SWAP_ACTIVATING_SIGKILL)) | |
e04aad61 | 881 | return 0; |
07b0b134 | 882 | |
d31ae548 | 883 | assert(IN_SET(s->state, SWAP_ACTIVATING, SWAP_ACTIVATING_DONE, SWAP_ACTIVE)); |
07b0b134 | 884 | |
75f86906 | 885 | if (detect_container() > 0) |
a5c3034f LP |
886 | return -EPERM; |
887 | ||
e1770af8 | 888 | swap_enter_deactivating(s); |
82a2b6bb | 889 | return 1; |
07b0b134 ML |
890 | } |
891 | ||
892 | static int swap_serialize(Unit *u, FILE *f, FDSet *fds) { | |
893 | Swap *s = SWAP(u); | |
894 | ||
895 | assert(s); | |
896 | assert(f); | |
897 | assert(fds); | |
898 | ||
899 | unit_serialize_item(u, f, "state", swap_state_to_string(s->state)); | |
e1770af8 | 900 | unit_serialize_item(u, f, "result", swap_result_to_string(s->result)); |
e04aad61 LP |
901 | |
902 | if (s->control_pid > 0) | |
de0671ee | 903 | unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid); |
e04aad61 LP |
904 | |
905 | if (s->control_command_id >= 0) | |
906 | unit_serialize_item(u, f, "control-command", swap_exec_command_to_string(s->control_command_id)); | |
07b0b134 ML |
907 | |
908 | return 0; | |
909 | } | |
910 | ||
911 | static int swap_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
912 | Swap *s = SWAP(u); | |
913 | ||
914 | assert(s); | |
915 | assert(fds); | |
916 | ||
917 | if (streq(key, "state")) { | |
918 | SwapState state; | |
919 | ||
646134dc ZJS |
920 | state = swap_state_from_string(value); |
921 | if (state < 0) | |
f2341e0a | 922 | log_unit_debug(u, "Failed to parse state value: %s", value); |
07b0b134 ML |
923 | else |
924 | s->deserialized_state = state; | |
e1770af8 LP |
925 | } else if (streq(key, "result")) { |
926 | SwapResult f; | |
927 | ||
928 | f = swap_result_from_string(value); | |
929 | if (f < 0) | |
f2341e0a | 930 | log_unit_debug(u, "Failed to parse result value: %s", value); |
e1770af8 LP |
931 | else if (f != SWAP_SUCCESS) |
932 | s->result = f; | |
e04aad61 LP |
933 | } else if (streq(key, "control-pid")) { |
934 | pid_t pid; | |
935 | ||
936 | if (parse_pid(value, &pid) < 0) | |
f2341e0a | 937 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
e04aad61 LP |
938 | else |
939 | s->control_pid = pid; | |
940 | ||
941 | } else if (streq(key, "control-command")) { | |
942 | SwapExecCommand id; | |
943 | ||
646134dc ZJS |
944 | id = swap_exec_command_from_string(value); |
945 | if (id < 0) | |
f2341e0a | 946 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
e04aad61 LP |
947 | else { |
948 | s->control_command_id = id; | |
949 | s->control_command = s->exec_command + id; | |
950 | } | |
07b0b134 | 951 | } else |
f2341e0a | 952 | log_unit_debug(u, "Unknown serialization key: %s", key); |
07b0b134 ML |
953 | |
954 | return 0; | |
955 | } | |
956 | ||
44a6b1b6 | 957 | _pure_ static UnitActiveState swap_active_state(Unit *u) { |
07b0b134 ML |
958 | assert(u); |
959 | ||
960 | return state_translation_table[SWAP(u)->state]; | |
961 | } | |
962 | ||
44a6b1b6 | 963 | _pure_ static const char *swap_sub_state_to_string(Unit *u) { |
07b0b134 ML |
964 | assert(u); |
965 | ||
966 | return swap_state_to_string(SWAP(u)->state); | |
967 | } | |
968 | ||
44a6b1b6 | 969 | _pure_ static bool swap_check_gc(Unit *u) { |
07b0b134 ML |
970 | Swap *s = SWAP(u); |
971 | ||
972 | assert(s); | |
973 | ||
6b1dc2bd | 974 | return s->from_proc_swaps; |
07b0b134 ML |
975 | } |
976 | ||
e04aad61 LP |
977 | static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
978 | Swap *s = SWAP(u); | |
e1770af8 | 979 | SwapResult f; |
e04aad61 LP |
980 | |
981 | assert(s); | |
982 | assert(pid >= 0); | |
983 | ||
984 | if (pid != s->control_pid) | |
985 | return; | |
986 | ||
987 | s->control_pid = 0; | |
988 | ||
1f0958f6 | 989 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
e1770af8 LP |
990 | f = SWAP_SUCCESS; |
991 | else if (code == CLD_EXITED) | |
992 | f = SWAP_FAILURE_EXIT_CODE; | |
993 | else if (code == CLD_KILLED) | |
994 | f = SWAP_FAILURE_SIGNAL; | |
995 | else if (code == CLD_DUMPED) | |
996 | f = SWAP_FAILURE_CORE_DUMP; | |
997 | else | |
998 | assert_not_reached("Unknown code"); | |
999 | ||
a0fef983 | 1000 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 1001 | s->result = f; |
e04aad61 LP |
1002 | |
1003 | if (s->control_command) { | |
6ea832a2 | 1004 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
e1770af8 | 1005 | |
e04aad61 LP |
1006 | s->control_command = NULL; |
1007 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
1008 | } | |
1009 | ||
f2341e0a LP |
1010 | log_unit_full(u, f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0, |
1011 | "Swap process exited, code=%s status=%i", sigchld_code_to_string(code), status); | |
e04aad61 LP |
1012 | |
1013 | switch (s->state) { | |
1014 | ||
1015 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1016 | case SWAP_ACTIVATING_DONE: |
e04aad61 LP |
1017 | case SWAP_ACTIVATING_SIGTERM: |
1018 | case SWAP_ACTIVATING_SIGKILL: | |
1019 | ||
e1770af8 LP |
1020 | if (f == SWAP_SUCCESS) |
1021 | swap_enter_active(s, f); | |
e04aad61 | 1022 | else |
e1770af8 | 1023 | swap_enter_dead(s, f); |
e04aad61 LP |
1024 | break; |
1025 | ||
1026 | case SWAP_DEACTIVATING: | |
1027 | case SWAP_DEACTIVATING_SIGKILL: | |
1028 | case SWAP_DEACTIVATING_SIGTERM: | |
1029 | ||
7bb01eff | 1030 | swap_enter_dead(s, f); |
e04aad61 LP |
1031 | break; |
1032 | ||
1033 | default: | |
1034 | assert_not_reached("Uh, control process died at wrong time."); | |
1035 | } | |
1036 | ||
1037 | /* Notify clients about changed exit status */ | |
1038 | unit_add_to_dbus_queue(u); | |
e04aad61 LP |
1039 | } |
1040 | ||
718db961 LP |
1041 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1042 | Swap *s = SWAP(userdata); | |
e04aad61 LP |
1043 | |
1044 | assert(s); | |
718db961 | 1045 | assert(s->timer_event_source == source); |
e04aad61 LP |
1046 | |
1047 | switch (s->state) { | |
1048 | ||
1049 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1050 | case SWAP_ACTIVATING_DONE: |
f2341e0a | 1051 | log_unit_warning(UNIT(s), "Activation timed out. Stopping."); |
e1770af8 | 1052 | swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1053 | break; |
1054 | ||
1055 | case SWAP_DEACTIVATING: | |
f2341e0a | 1056 | log_unit_warning(UNIT(s), "Deactivation timed out. Stopping."); |
e1770af8 | 1057 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1058 | break; |
1059 | ||
1060 | case SWAP_ACTIVATING_SIGTERM: | |
4819ff03 | 1061 | if (s->kill_context.send_sigkill) { |
f2341e0a | 1062 | log_unit_warning(UNIT(s), "Activation timed out. Killing."); |
e1770af8 | 1063 | swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1064 | } else { |
f2341e0a | 1065 | log_unit_warning(UNIT(s), "Activation timed out. Skipping SIGKILL. Ignoring."); |
e1770af8 | 1066 | swap_enter_dead(s, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1067 | } |
e04aad61 LP |
1068 | break; |
1069 | ||
1070 | case SWAP_DEACTIVATING_SIGTERM: | |
4819ff03 | 1071 | if (s->kill_context.send_sigkill) { |
f2341e0a | 1072 | log_unit_warning(UNIT(s), "Deactivation timed out. Killing."); |
e1770af8 | 1073 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1074 | } else { |
f2341e0a | 1075 | log_unit_warning(UNIT(s), "Deactivation timed out. Skipping SIGKILL. Ignoring."); |
e1770af8 | 1076 | swap_enter_dead(s, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1077 | } |
e04aad61 LP |
1078 | break; |
1079 | ||
1080 | case SWAP_ACTIVATING_SIGKILL: | |
1081 | case SWAP_DEACTIVATING_SIGKILL: | |
f2341e0a | 1082 | log_unit_warning(UNIT(s), "Swap process still around after SIGKILL. Ignoring."); |
e1770af8 | 1083 | swap_enter_dead(s, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1084 | break; |
1085 | ||
1086 | default: | |
1087 | assert_not_reached("Timeout at wrong time."); | |
1088 | } | |
718db961 LP |
1089 | |
1090 | return 0; | |
e04aad61 LP |
1091 | } |
1092 | ||
1093 | static int swap_load_proc_swaps(Manager *m, bool set_flags) { | |
1094 | unsigned i; | |
1095 | int r = 0; | |
1096 | ||
1097 | assert(m); | |
1098 | ||
07b0b134 | 1099 | rewind(m->proc_swaps); |
bab45044 | 1100 | |
4e85aff4 | 1101 | (void) fscanf(m->proc_swaps, "%*s %*s %*s %*s %*s\n"); |
07b0b134 | 1102 | |
e04aad61 | 1103 | for (i = 1;; i++) { |
9fb3675e | 1104 | _cleanup_free_ char *dev = NULL, *d = NULL; |
07b0b134 ML |
1105 | int prio = 0, k; |
1106 | ||
646134dc ZJS |
1107 | k = fscanf(m->proc_swaps, |
1108 | "%ms " /* device/file */ | |
1109 | "%*s " /* type of swap */ | |
1110 | "%*s " /* swap size */ | |
1111 | "%*s " /* used */ | |
1112 | "%i\n", /* priority */ | |
1113 | &dev, &prio); | |
1114 | if (k != 2) { | |
07b0b134 | 1115 | if (k == EOF) |
4e85aff4 | 1116 | break; |
07b0b134 | 1117 | |
628c89cc | 1118 | log_warning("Failed to parse /proc/swaps:%u.", i); |
e04aad61 | 1119 | continue; |
07b0b134 | 1120 | } |
07b0b134 | 1121 | |
527b7a42 | 1122 | if (cunescape(dev, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1123 | return log_oom(); |
1124 | ||
1125 | device_found_node(m, d, true, DEVICE_FOUND_SWAP, set_flags); | |
4e85aff4 | 1126 | |
628c89cc | 1127 | k = swap_process_new(m, d, prio, set_flags); |
07b0b134 | 1128 | if (k < 0) |
e04aad61 | 1129 | r = k; |
07b0b134 ML |
1130 | } |
1131 | ||
e04aad61 LP |
1132 | return r; |
1133 | } | |
1134 | ||
718db961 LP |
1135 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1136 | Manager *m = userdata; | |
595ed347 | 1137 | Unit *u; |
4e434314 LP |
1138 | int r; |
1139 | ||
1140 | assert(m); | |
718db961 | 1141 | assert(revents & EPOLLPRI); |
4e434314 | 1142 | |
646134dc ZJS |
1143 | r = swap_load_proc_swaps(m, true); |
1144 | if (r < 0) { | |
da927ba9 | 1145 | log_error_errno(r, "Failed to reread /proc/swaps: %m"); |
e04aad61 LP |
1146 | |
1147 | /* Reset flags, just in case, for late calls */ | |
595ed347 MS |
1148 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) { |
1149 | Swap *swap = SWAP(u); | |
e04aad61 LP |
1150 | |
1151 | swap->is_active = swap->just_activated = false; | |
1152 | } | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | manager_dispatch_load_queue(m); | |
1158 | ||
595ed347 MS |
1159 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) { |
1160 | Swap *swap = SWAP(u); | |
e04aad61 LP |
1161 | |
1162 | if (!swap->is_active) { | |
1163 | /* This has just been deactivated */ | |
1164 | ||
e04aad61 LP |
1165 | swap_unset_proc_swaps(swap); |
1166 | ||
1167 | switch (swap->state) { | |
1168 | ||
1169 | case SWAP_ACTIVE: | |
e1770af8 | 1170 | swap_enter_dead(swap, SWAP_SUCCESS); |
e04aad61 LP |
1171 | break; |
1172 | ||
1173 | default: | |
5bcb0f2b | 1174 | /* Fire again */ |
e04aad61 LP |
1175 | swap_set_state(swap, swap->state); |
1176 | break; | |
1177 | } | |
1178 | ||
628c89cc LP |
1179 | if (swap->what) |
1180 | device_found_node(m, swap->what, false, DEVICE_FOUND_SWAP, true); | |
1181 | ||
e04aad61 LP |
1182 | } else if (swap->just_activated) { |
1183 | ||
1184 | /* New swap entry */ | |
1185 | ||
1186 | switch (swap->state) { | |
1187 | ||
1188 | case SWAP_DEAD: | |
1189 | case SWAP_FAILED: | |
4b58153d | 1190 | (void) unit_acquire_invocation_id(UNIT(swap)); |
e1770af8 | 1191 | swap_enter_active(swap, SWAP_SUCCESS); |
e04aad61 LP |
1192 | break; |
1193 | ||
5bcb0f2b LP |
1194 | case SWAP_ACTIVATING: |
1195 | swap_set_state(swap, SWAP_ACTIVATING_DONE); | |
1196 | break; | |
1197 | ||
e04aad61 LP |
1198 | default: |
1199 | /* Nothing really changed, but let's | |
1200 | * issue an notification call | |
1201 | * nonetheless, in case somebody is | |
1202 | * waiting for this. */ | |
1203 | swap_set_state(swap, swap->state); | |
1204 | break; | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | /* Reset the flags for later calls */ | |
1209 | swap->is_active = swap->just_activated = false; | |
1210 | } | |
1211 | ||
1212 | return 1; | |
1213 | } | |
1214 | ||
1215 | static Unit *swap_following(Unit *u) { | |
1216 | Swap *s = SWAP(u); | |
1217 | Swap *other, *first = NULL; | |
1218 | ||
1219 | assert(s); | |
1220 | ||
cdc89820 ZJS |
1221 | /* If the user configured the swap through /etc/fstab or |
1222 | * a device unit, follow that. */ | |
1223 | ||
1224 | if (s->from_fragment) | |
e04aad61 LP |
1225 | return NULL; |
1226 | ||
caac2704 | 1227 | LIST_FOREACH_OTHERS(same_devnode, other, s) |
cdc89820 ZJS |
1228 | if (other->from_fragment) |
1229 | return UNIT(other); | |
1230 | ||
b938cb90 | 1231 | /* Otherwise, make everybody follow the unit that's named after |
cdc89820 ZJS |
1232 | * the swap device in the kernel */ |
1233 | ||
1234 | if (streq_ptr(s->what, s->devnode)) | |
1235 | return NULL; | |
e04aad61 | 1236 | |
9670d583 LP |
1237 | LIST_FOREACH_AFTER(same_devnode, other, s) |
1238 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1239 | return UNIT(other); |
1240 | ||
9670d583 LP |
1241 | LIST_FOREACH_BEFORE(same_devnode, other, s) { |
1242 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1243 | return UNIT(other); |
1244 | ||
1245 | first = other; | |
1246 | } | |
1247 | ||
cdc89820 | 1248 | /* Fall back to the first on the list */ |
e04aad61 | 1249 | return UNIT(first); |
07b0b134 ML |
1250 | } |
1251 | ||
6210e7fc | 1252 | static int swap_following_set(Unit *u, Set **_set) { |
5bcb0f2b | 1253 | Swap *s = SWAP(u), *other; |
6210e7fc LP |
1254 | Set *set; |
1255 | int r; | |
1256 | ||
1257 | assert(s); | |
1258 | assert(_set); | |
1259 | ||
9670d583 | 1260 | if (LIST_JUST_US(same_devnode, s)) { |
6210e7fc LP |
1261 | *_set = NULL; |
1262 | return 0; | |
1263 | } | |
1264 | ||
d5099efc | 1265 | set = set_new(NULL); |
5bcb0f2b | 1266 | if (!set) |
6210e7fc LP |
1267 | return -ENOMEM; |
1268 | ||
caac2704 | 1269 | LIST_FOREACH_OTHERS(same_devnode, other, s) { |
5bcb0f2b LP |
1270 | r = set_put(set, other); |
1271 | if (r < 0) | |
6210e7fc | 1272 | goto fail; |
5bcb0f2b | 1273 | } |
6210e7fc LP |
1274 | |
1275 | *_set = set; | |
1276 | return 1; | |
1277 | ||
1278 | fail: | |
1279 | set_free(set); | |
1280 | return r; | |
1281 | } | |
1282 | ||
07b0b134 ML |
1283 | static void swap_shutdown(Manager *m) { |
1284 | assert(m); | |
1285 | ||
718db961 LP |
1286 | m->swap_event_source = sd_event_source_unref(m->swap_event_source); |
1287 | ||
74ca738f | 1288 | m->proc_swaps = safe_fclose(m->proc_swaps); |
e04aad61 | 1289 | |
525d3cc7 | 1290 | m->swaps_by_devnode = hashmap_free(m->swaps_by_devnode); |
07b0b134 ML |
1291 | } |
1292 | ||
ba64af90 | 1293 | static void swap_enumerate(Manager *m) { |
07b0b134 | 1294 | int r; |
9670d583 | 1295 | |
07b0b134 ML |
1296 | assert(m); |
1297 | ||
4e434314 | 1298 | if (!m->proc_swaps) { |
646134dc | 1299 | m->proc_swaps = fopen("/proc/swaps", "re"); |
ba64af90 LP |
1300 | if (!m->proc_swaps) { |
1301 | if (errno == ENOENT) | |
1302 | log_debug("Not swap enabled, skipping enumeration"); | |
1303 | else | |
1304 | log_error_errno(errno, "Failed to open /proc/swaps: %m"); | |
1305 | ||
1306 | return; | |
1307 | } | |
4e434314 | 1308 | |
151b9b96 | 1309 | r = sd_event_add_io(m->event, &m->swap_event_source, fileno(m->proc_swaps), EPOLLPRI, swap_dispatch_io, m); |
ba64af90 LP |
1310 | if (r < 0) { |
1311 | log_error_errno(r, "Failed to watch /proc/swaps: %m"); | |
29083707 | 1312 | goto fail; |
ba64af90 | 1313 | } |
29083707 LP |
1314 | |
1315 | /* Dispatch this before we dispatch SIGCHLD, so that | |
1316 | * we always get the events from /proc/swaps before | |
1317 | * the SIGCHLD of /sbin/swapon. */ | |
1318 | r = sd_event_source_set_priority(m->swap_event_source, -10); | |
ba64af90 LP |
1319 | if (r < 0) { |
1320 | log_error_errno(r, "Failed to change /proc/swaps priority: %m"); | |
718db961 | 1321 | goto fail; |
ba64af90 | 1322 | } |
7dfbe2e3 TG |
1323 | |
1324 | (void) sd_event_source_set_description(m->swap_event_source, "swap-proc"); | |
4e434314 LP |
1325 | } |
1326 | ||
646134dc ZJS |
1327 | r = swap_load_proc_swaps(m, false); |
1328 | if (r < 0) | |
718db961 LP |
1329 | goto fail; |
1330 | ||
ba64af90 | 1331 | return; |
07b0b134 | 1332 | |
718db961 LP |
1333 | fail: |
1334 | swap_shutdown(m); | |
07b0b134 ML |
1335 | } |
1336 | ||
628c89cc | 1337 | int swap_process_device_new(Manager *m, struct udev_device *dev) { |
9670d583 LP |
1338 | struct udev_list_entry *item = NULL, *first = NULL; |
1339 | _cleanup_free_ char *e = NULL; | |
1340 | const char *dn; | |
cabf58b2 | 1341 | Unit *u; |
9670d583 LP |
1342 | int r = 0; |
1343 | ||
1344 | assert(m); | |
1345 | assert(dev); | |
1346 | ||
1347 | dn = udev_device_get_devnode(dev); | |
1348 | if (!dn) | |
1349 | return 0; | |
1350 | ||
7410616c LP |
1351 | r = unit_name_from_path(dn, ".swap", &e); |
1352 | if (r < 0) | |
1353 | return r; | |
9670d583 | 1354 | |
cabf58b2 FB |
1355 | u = manager_get_unit(m, e); |
1356 | if (u) | |
1357 | r = swap_set_devnode(SWAP(u), dn); | |
9670d583 LP |
1358 | |
1359 | first = udev_device_get_devlinks_list_entry(dev); | |
1360 | udev_list_entry_foreach(item, first) { | |
1361 | _cleanup_free_ char *n = NULL; | |
7410616c | 1362 | int q; |
9670d583 | 1363 | |
7410616c LP |
1364 | q = unit_name_from_path(udev_list_entry_get_name(item), ".swap", &n); |
1365 | if (q < 0) | |
1366 | return q; | |
9670d583 | 1367 | |
cabf58b2 FB |
1368 | u = manager_get_unit(m, n); |
1369 | if (u) { | |
1370 | q = swap_set_devnode(SWAP(u), dn); | |
9670d583 LP |
1371 | if (q < 0) |
1372 | r = q; | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | return r; | |
1377 | } | |
1378 | ||
628c89cc | 1379 | int swap_process_device_remove(Manager *m, struct udev_device *dev) { |
9670d583 LP |
1380 | const char *dn; |
1381 | int r = 0; | |
1382 | Swap *s; | |
1383 | ||
1384 | dn = udev_device_get_devnode(dev); | |
1385 | if (!dn) | |
1386 | return 0; | |
1387 | ||
1388 | while ((s = hashmap_get(m->swaps_by_devnode, dn))) { | |
1389 | int q; | |
1390 | ||
1391 | q = swap_set_devnode(s, NULL); | |
1392 | if (q < 0) | |
1393 | r = q; | |
1394 | } | |
1395 | ||
1396 | return r; | |
1397 | } | |
1398 | ||
fdf20a31 | 1399 | static void swap_reset_failed(Unit *u) { |
5632e374 LP |
1400 | Swap *s = SWAP(u); |
1401 | ||
1402 | assert(s); | |
1403 | ||
fdf20a31 | 1404 | if (s->state == SWAP_FAILED) |
5632e374 | 1405 | swap_set_state(s, SWAP_DEAD); |
e04aad61 | 1406 | |
e1770af8 | 1407 | s->result = SWAP_SUCCESS; |
5632e374 LP |
1408 | } |
1409 | ||
718db961 | 1410 | static int swap_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 1411 | return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error); |
8a0867d6 LP |
1412 | } |
1413 | ||
7a7821c8 | 1414 | static int swap_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1415 | Swap *s = SWAP(u); |
7a7821c8 | 1416 | usec_t t; |
68db7a3b ZJS |
1417 | int r; |
1418 | ||
1419 | if (!s->timer_event_source) | |
1420 | return 0; | |
1421 | ||
7a7821c8 | 1422 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
1423 | if (r < 0) |
1424 | return r; | |
7a7821c8 LP |
1425 | if (t == USEC_INFINITY) |
1426 | return 0; | |
68db7a3b | 1427 | |
7a7821c8 | 1428 | *timeout = t; |
68db7a3b ZJS |
1429 | return 1; |
1430 | } | |
1431 | ||
1c2e9646 | 1432 | static bool swap_supported(void) { |
0faacd47 LP |
1433 | static int supported = -1; |
1434 | ||
1435 | /* If swap support is not available in the kernel, or we are | |
1436 | * running in a container we don't support swap units, and any | |
1437 | * attempts to starting one should fail immediately. */ | |
1438 | ||
1439 | if (supported < 0) | |
1440 | supported = | |
1441 | access("/proc/swaps", F_OK) >= 0 && | |
75f86906 | 1442 | detect_container() <= 0; |
0faacd47 LP |
1443 | |
1444 | return supported; | |
1445 | } | |
1446 | ||
291d565a LP |
1447 | static int swap_control_pid(Unit *u) { |
1448 | Swap *s = SWAP(u); | |
1449 | ||
1450 | assert(s); | |
1451 | ||
1452 | return s->control_pid; | |
1453 | } | |
1454 | ||
e04aad61 LP |
1455 | static const char* const swap_exec_command_table[_SWAP_EXEC_COMMAND_MAX] = { |
1456 | [SWAP_EXEC_ACTIVATE] = "ExecActivate", | |
1457 | [SWAP_EXEC_DEACTIVATE] = "ExecDeactivate", | |
1458 | }; | |
1459 | ||
1460 | DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand); | |
1461 | ||
e1770af8 LP |
1462 | static const char* const swap_result_table[_SWAP_RESULT_MAX] = { |
1463 | [SWAP_SUCCESS] = "success", | |
1464 | [SWAP_FAILURE_RESOURCES] = "resources", | |
1465 | [SWAP_FAILURE_TIMEOUT] = "timeout", | |
1466 | [SWAP_FAILURE_EXIT_CODE] = "exit-code", | |
1467 | [SWAP_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1468 | [SWAP_FAILURE_CORE_DUMP] = "core-dump", |
1469 | [SWAP_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
e1770af8 LP |
1470 | }; |
1471 | ||
1472 | DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult); | |
1473 | ||
07b0b134 | 1474 | const UnitVTable swap_vtable = { |
7d17cfbc | 1475 | .object_size = sizeof(Swap), |
718db961 LP |
1476 | .exec_context_offset = offsetof(Swap, exec_context), |
1477 | .cgroup_context_offset = offsetof(Swap, cgroup_context), | |
1478 | .kill_context_offset = offsetof(Swap, kill_context), | |
613b411c | 1479 | .exec_runtime_offset = offsetof(Swap, exec_runtime), |
29206d46 | 1480 | .dynamic_creds_offset = offsetof(Swap, dynamic_creds), |
3ef63c31 | 1481 | |
f975e971 LP |
1482 | .sections = |
1483 | "Unit\0" | |
1484 | "Swap\0" | |
1485 | "Install\0", | |
4ad49000 | 1486 | .private_section = "Swap", |
71645aca | 1487 | |
4e85aff4 | 1488 | .init = swap_init, |
07b0b134 | 1489 | .load = swap_load, |
6e620bec | 1490 | .done = swap_done, |
07b0b134 ML |
1491 | |
1492 | .coldplug = swap_coldplug, | |
1493 | ||
1494 | .dump = swap_dump, | |
1495 | ||
1496 | .start = swap_start, | |
1497 | .stop = swap_stop, | |
1498 | ||
8a0867d6 LP |
1499 | .kill = swap_kill, |
1500 | ||
68db7a3b ZJS |
1501 | .get_timeout = swap_get_timeout, |
1502 | ||
07b0b134 ML |
1503 | .serialize = swap_serialize, |
1504 | .deserialize_item = swap_deserialize_item, | |
1505 | ||
1506 | .active_state = swap_active_state, | |
1507 | .sub_state_to_string = swap_sub_state_to_string, | |
1508 | ||
1509 | .check_gc = swap_check_gc, | |
1510 | ||
e04aad61 | 1511 | .sigchld_event = swap_sigchld_event, |
e04aad61 LP |
1512 | |
1513 | .reset_failed = swap_reset_failed, | |
1514 | ||
291d565a LP |
1515 | .control_pid = swap_control_pid, |
1516 | ||
718db961 | 1517 | .bus_vtable = bus_swap_vtable, |
74c964d3 LP |
1518 | .bus_set_property = bus_swap_set_property, |
1519 | .bus_commit_properties = bus_swap_commit_properties, | |
07b0b134 | 1520 | |
e04aad61 | 1521 | .following = swap_following, |
6210e7fc | 1522 | .following_set = swap_following_set, |
5632e374 | 1523 | |
6e620bec | 1524 | .enumerate = swap_enumerate, |
c6918296 | 1525 | .shutdown = swap_shutdown, |
0faacd47 | 1526 | .supported = swap_supported, |
c6918296 MS |
1527 | |
1528 | .status_message_formats = { | |
1529 | .starting_stopping = { | |
1530 | [0] = "Activating swap %s...", | |
1531 | [1] = "Deactivating swap %s...", | |
1532 | }, | |
1533 | .finished_start_job = { | |
1534 | [JOB_DONE] = "Activated swap %s.", | |
1535 | [JOB_FAILED] = "Failed to activate swap %s.", | |
c6918296 MS |
1536 | [JOB_TIMEOUT] = "Timed out activating swap %s.", |
1537 | }, | |
1538 | .finished_stop_job = { | |
1539 | [JOB_DONE] = "Deactivated swap %s.", | |
1540 | [JOB_FAILED] = "Failed deactivating swap %s.", | |
1541 | [JOB_TIMEOUT] = "Timed out deactivating swap %s.", | |
1542 | }, | |
1543 | }, | |
07b0b134 | 1544 | }; |