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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
07b0b134 ML |
2 | |
3 | #include <errno.h> | |
07b0b134 ML |
4 | #include <sys/epoll.h> |
5 | #include <sys/stat.h> | |
4f5dd394 | 6 | #include <unistd.h> |
07b0b134 | 7 | |
4366e598 | 8 | #include "sd-device.h" |
b4bbcaa9 | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
07b0b134 | 11 | #include "dbus-swap.h" |
4366e598 YW |
12 | #include "device-private.h" |
13 | #include "device-util.h" | |
57b7a260 | 14 | #include "device.h" |
4f5dd394 | 15 | #include "escape.h" |
9a57c629 | 16 | #include "exit-status.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
f97b34a6 | 18 | #include "format-util.h" |
4f5dd394 | 19 | #include "fstab-util.h" |
6bedfcbb | 20 | #include "parse-util.h" |
9eb977db | 21 | #include "path-util.h" |
7b3e062c | 22 | #include "process-util.h" |
d68c645b | 23 | #include "serialize.h" |
4f5dd394 | 24 | #include "special.h" |
8b43440b | 25 | #include "string-table.h" |
07630cea | 26 | #include "string-util.h" |
3ffd4af2 | 27 | #include "swap.h" |
4f5dd394 LP |
28 | #include "unit-name.h" |
29 | #include "unit.h" | |
30 | #include "virt.h" | |
07b0b134 ML |
31 | |
32 | static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = { | |
33 | [SWAP_DEAD] = UNIT_INACTIVE, | |
e04aad61 | 34 | [SWAP_ACTIVATING] = UNIT_ACTIVATING, |
5bcb0f2b | 35 | [SWAP_ACTIVATING_DONE] = UNIT_ACTIVE, |
07b0b134 | 36 | [SWAP_ACTIVE] = UNIT_ACTIVE, |
e04aad61 | 37 | [SWAP_DEACTIVATING] = UNIT_DEACTIVATING, |
e04aad61 LP |
38 | [SWAP_DEACTIVATING_SIGTERM] = UNIT_DEACTIVATING, |
39 | [SWAP_DEACTIVATING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 40 | [SWAP_FAILED] = UNIT_FAILED |
07b0b134 ML |
41 | }; |
42 | ||
718db961 LP |
43 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
44 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
45 | ||
dedf3719 LP |
46 | static bool SWAP_STATE_WITH_PROCESS(SwapState state) { |
47 | return IN_SET(state, | |
48 | SWAP_ACTIVATING, | |
49 | SWAP_ACTIVATING_DONE, | |
50 | SWAP_DEACTIVATING, | |
51 | SWAP_DEACTIVATING_SIGTERM, | |
52 | SWAP_DEACTIVATING_SIGKILL); | |
53 | } | |
54 | ||
e04aad61 | 55 | static void swap_unset_proc_swaps(Swap *s) { |
9670d583 LP |
56 | assert(s); |
57 | ||
58 | if (!s->from_proc_swaps) | |
59 | return; | |
60 | ||
a1e58e8e | 61 | s->parameters_proc_swaps.what = mfree(s->parameters_proc_swaps.what); |
9670d583 LP |
62 | |
63 | s->from_proc_swaps = false; | |
64 | } | |
65 | ||
66 | static int swap_set_devnode(Swap *s, const char *devnode) { | |
df326b84 | 67 | Hashmap *swaps; |
5bcb0f2b | 68 | Swap *first; |
9670d583 | 69 | int r; |
e04aad61 LP |
70 | |
71 | assert(s); | |
72 | ||
548f6937 | 73 | r = hashmap_ensure_allocated(&UNIT(s)->manager->swaps_by_devnode, &path_hash_ops); |
9670d583 LP |
74 | if (r < 0) |
75 | return r; | |
e04aad61 | 76 | |
9670d583 | 77 | swaps = UNIT(s)->manager->swaps_by_devnode; |
e04aad61 | 78 | |
9670d583 LP |
79 | if (s->devnode) { |
80 | first = hashmap_get(swaps, s->devnode); | |
e04aad61 | 81 | |
9670d583 LP |
82 | LIST_REMOVE(same_devnode, first, s); |
83 | if (first) | |
84 | hashmap_replace(swaps, first->devnode, first); | |
85 | else | |
86 | hashmap_remove(swaps, s->devnode); | |
5bcb0f2b | 87 | |
a1e58e8e | 88 | s->devnode = mfree(s->devnode); |
9670d583 LP |
89 | } |
90 | ||
91 | if (devnode) { | |
92 | s->devnode = strdup(devnode); | |
93 | if (!s->devnode) | |
94 | return -ENOMEM; | |
95 | ||
96 | first = hashmap_get(swaps, s->devnode); | |
97 | LIST_PREPEND(same_devnode, first, s); | |
98 | ||
99 | return hashmap_replace(swaps, first->devnode, first); | |
100 | } | |
101 | ||
102 | return 0; | |
e04aad61 LP |
103 | } |
104 | ||
f6cebb3b | 105 | static void swap_init(Unit *u) { |
6e620bec LP |
106 | Swap *s = SWAP(u); |
107 | ||
108 | assert(s); | |
1124fe6f | 109 | assert(UNIT(s)->load_state == UNIT_STUB); |
6e620bec | 110 | |
1f19a534 | 111 | s->timeout_usec = u->manager->default_timeout_start_usec; |
e04aad61 | 112 | |
ac155bb8 MS |
113 | s->exec_context.std_output = u->manager->default_std_output; |
114 | s->exec_context.std_error = u->manager->default_std_error; | |
085afe36 | 115 | |
6b1dc2bd | 116 | s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1; |
e04aad61 | 117 | |
e1770af8 | 118 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; |
c8f4d764 | 119 | |
5bcb0f2b | 120 | u->ignore_on_isolate = true; |
e04aad61 LP |
121 | } |
122 | ||
123 | static void swap_unwatch_control_pid(Swap *s) { | |
124 | assert(s); | |
125 | ||
126 | if (s->control_pid <= 0) | |
127 | return; | |
128 | ||
129 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
130 | s->control_pid = 0; | |
6e620bec LP |
131 | } |
132 | ||
4e85aff4 LP |
133 | static void swap_done(Unit *u) { |
134 | Swap *s = SWAP(u); | |
07b0b134 | 135 | |
4e85aff4 | 136 | assert(s); |
07b0b134 | 137 | |
e04aad61 | 138 | swap_unset_proc_swaps(s); |
9670d583 | 139 | swap_set_devnode(s, NULL); |
e04aad61 | 140 | |
a1e58e8e LP |
141 | s->what = mfree(s->what); |
142 | s->parameters_fragment.what = mfree(s->parameters_fragment.what); | |
143 | s->parameters_fragment.options = mfree(s->parameters_fragment.options); | |
86b23b07 | 144 | |
e8a565cb | 145 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e04aad61 LP |
146 | exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); |
147 | s->control_command = NULL; | |
148 | ||
29206d46 LP |
149 | dynamic_creds_unref(&s->dynamic_creds); |
150 | ||
e04aad61 LP |
151 | swap_unwatch_control_pid(s); |
152 | ||
718db961 LP |
153 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
154 | } | |
155 | ||
36c16a7c | 156 | static int swap_arm_timer(Swap *s, usec_t usec) { |
718db961 LP |
157 | int r; |
158 | ||
159 | assert(s); | |
160 | ||
718db961 | 161 | if (s->timer_event_source) { |
36c16a7c | 162 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
163 | if (r < 0) |
164 | return r; | |
165 | ||
166 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
167 | } | |
168 | ||
36c16a7c LP |
169 | if (usec == USEC_INFINITY) |
170 | return 0; | |
171 | ||
7dfbe2e3 | 172 | r = sd_event_add_time( |
6a0f1f6d LP |
173 | UNIT(s)->manager->event, |
174 | &s->timer_event_source, | |
175 | CLOCK_MONOTONIC, | |
36c16a7c | 176 | usec, 0, |
6a0f1f6d | 177 | swap_dispatch_timer, s); |
7dfbe2e3 TG |
178 | if (r < 0) |
179 | return r; | |
180 | ||
181 | (void) sd_event_source_set_description(s->timer_event_source, "swap-timer"); | |
182 | ||
183 | return 0; | |
07b0b134 ML |
184 | } |
185 | ||
eef85c4a | 186 | static int swap_add_device_dependencies(Swap *s) { |
173a8d04 LP |
187 | assert(s); |
188 | ||
189 | if (!s->what) | |
190 | return 0; | |
191 | ||
f10af76d LP |
192 | if (!s->from_fragment) |
193 | return 0; | |
194 | ||
cfcfd4ae | 195 | if (is_device_path(s->what)) |
eef85c4a | 196 | return unit_add_node_dependency(UNIT(s), s->what, MANAGER_IS_SYSTEM(UNIT(s)->manager), UNIT_BINDS_TO, UNIT_DEPENDENCY_FILE); |
cfcfd4ae LP |
197 | else |
198 | /* File based swap devices need to be ordered after | |
2b93b027 | 199 | * systemd-remount-fs.service, since they might need a |
cfcfd4ae | 200 | * writable file system. */ |
35d8c19a | 201 | return unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_REMOUNT_FS_SERVICE, true, UNIT_DEPENDENCY_FILE); |
173a8d04 LP |
202 | } |
203 | ||
2edd4434 | 204 | static int swap_add_default_dependencies(Swap *s) { |
8bf23dc7 FB |
205 | int r; |
206 | ||
2edd4434 LP |
207 | assert(s); |
208 | ||
4c9ea260 LP |
209 | if (!UNIT(s)->default_dependencies) |
210 | return 0; | |
211 | ||
463d0d15 | 212 | if (!MANAGER_IS_SYSTEM(UNIT(s)->manager)) |
6b1dc2bd | 213 | return 0; |
2edd4434 | 214 | |
75f86906 | 215 | if (detect_container() > 0) |
c0387ebf LP |
216 | return 0; |
217 | ||
8bf23dc7 FB |
218 | /* swap units generated for the swap dev links are missing the |
219 | * ordering dep against the swap target. */ | |
35d8c19a | 220 | r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SWAP_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
8bf23dc7 FB |
221 | if (r < 0) |
222 | return r; | |
223 | ||
5a724170 | 224 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
2edd4434 LP |
225 | } |
226 | ||
4e85aff4 | 227 | static int swap_verify(Swap *s) { |
7fd1b19b | 228 | _cleanup_free_ char *e = NULL; |
7410616c | 229 | int r; |
4e85aff4 | 230 | |
1124fe6f | 231 | if (UNIT(s)->load_state != UNIT_LOADED) |
5bcb0f2b | 232 | return 0; |
4e85aff4 | 233 | |
7410616c LP |
234 | r = unit_name_from_path(s->what, ".swap", &e); |
235 | if (r < 0) | |
f2341e0a | 236 | return log_unit_error_errno(UNIT(s), r, "Failed to generate unit name from path: %m"); |
4e85aff4 | 237 | |
7410616c | 238 | if (!unit_has_name(UNIT(s), e)) { |
f2341e0a | 239 | log_unit_error(UNIT(s), "Value of What= and unit name do not match, not loading."); |
6f40aa45 | 240 | return -ENOEXEC; |
4e85aff4 LP |
241 | } |
242 | ||
4819ff03 | 243 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 244 | log_unit_error(UNIT(s), "Unit has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load."); |
6f40aa45 | 245 | return -ENOEXEC; |
e04aad61 LP |
246 | } |
247 | ||
4e85aff4 LP |
248 | return 0; |
249 | } | |
250 | ||
9670d583 | 251 | static int swap_load_devnode(Swap *s) { |
4366e598 | 252 | _cleanup_(sd_device_unrefp) sd_device *d = NULL; |
9670d583 LP |
253 | struct stat st; |
254 | const char *p; | |
e5ca27b7 | 255 | int r; |
9670d583 LP |
256 | |
257 | assert(s); | |
258 | ||
259 | if (stat(s->what, &st) < 0 || !S_ISBLK(st.st_mode)) | |
260 | return 0; | |
261 | ||
4366e598 | 262 | r = device_new_from_stat_rdev(&d, &st); |
e5ca27b7 LP |
263 | if (r < 0) { |
264 | log_unit_full(UNIT(s), r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, | |
4366e598 | 265 | "Failed to allocate device for swap %s: %m", s->what); |
9670d583 | 266 | return 0; |
e5ca27b7 | 267 | } |
9670d583 | 268 | |
4366e598 | 269 | if (sd_device_get_devname(d, &p) < 0) |
9670d583 LP |
270 | return 0; |
271 | ||
272 | return swap_set_devnode(s, p); | |
273 | } | |
274 | ||
07b0b134 ML |
275 | static int swap_load(Unit *u) { |
276 | int r; | |
277 | Swap *s = SWAP(u); | |
278 | ||
279 | assert(s); | |
ac155bb8 | 280 | assert(u->load_state == UNIT_STUB); |
07b0b134 ML |
281 | |
282 | /* Load a .swap file */ | |
3000f850 YW |
283 | if (SWAP(u)->from_proc_swaps) |
284 | r = unit_load_fragment_and_dropin_optional(u); | |
285 | else | |
286 | r = unit_load_fragment_and_dropin(u); | |
646134dc | 287 | if (r < 0) |
07b0b134 ML |
288 | return r; |
289 | ||
ac155bb8 | 290 | if (u->load_state == UNIT_LOADED) { |
4e85aff4 | 291 | |
1124fe6f | 292 | if (UNIT(s)->fragment_path) |
4e85aff4 LP |
293 | s->from_fragment = true; |
294 | ||
295 | if (!s->what) { | |
296 | if (s->parameters_fragment.what) | |
297 | s->what = strdup(s->parameters_fragment.what); | |
4e85aff4 LP |
298 | else if (s->parameters_proc_swaps.what) |
299 | s->what = strdup(s->parameters_proc_swaps.what); | |
7410616c LP |
300 | else { |
301 | r = unit_name_to_path(u->id, &s->what); | |
302 | if (r < 0) | |
303 | return r; | |
304 | } | |
4e85aff4 LP |
305 | |
306 | if (!s->what) | |
07b0b134 | 307 | return -ENOMEM; |
4e85aff4 | 308 | } |
07b0b134 | 309 | |
858d36c1 | 310 | path_simplify(s->what, false); |
07b0b134 | 311 | |
5bcb0f2b LP |
312 | if (!UNIT(s)->description) { |
313 | r = unit_set_description(u, s->what); | |
314 | if (r < 0) | |
4e85aff4 | 315 | return r; |
5bcb0f2b | 316 | } |
4e85aff4 | 317 | |
eef85c4a | 318 | r = unit_require_mounts_for(UNIT(s), s->what, UNIT_DEPENDENCY_IMPLICIT); |
646134dc | 319 | if (r < 0) |
07b0b134 ML |
320 | return r; |
321 | ||
eef85c4a | 322 | r = swap_add_device_dependencies(s); |
646134dc | 323 | if (r < 0) |
6e2ef85b | 324 | return r; |
07b0b134 | 325 | |
9670d583 LP |
326 | r = swap_load_devnode(s); |
327 | if (r < 0) | |
328 | return r; | |
329 | ||
598459ce LP |
330 | r = unit_patch_contexts(u); |
331 | if (r < 0) | |
332 | return r; | |
333 | ||
334 | r = unit_add_exec_dependencies(u, &s->exec_context); | |
335 | if (r < 0) | |
336 | return r; | |
337 | ||
d79200e2 | 338 | r = unit_set_default_slice(u); |
a016b922 LP |
339 | if (r < 0) |
340 | return r; | |
341 | ||
4c9ea260 LP |
342 | r = swap_add_default_dependencies(s); |
343 | if (r < 0) | |
344 | return r; | |
07b0b134 ML |
345 | } |
346 | ||
347 | return swap_verify(s); | |
348 | } | |
349 | ||
628c89cc | 350 | static int swap_setup_unit( |
4e85aff4 LP |
351 | Manager *m, |
352 | const char *what, | |
e04aad61 | 353 | const char *what_proc_swaps, |
4e85aff4 | 354 | int priority, |
e04aad61 LP |
355 | bool set_flags) { |
356 | ||
7fd1b19b | 357 | _cleanup_free_ char *e = NULL; |
2c7c6144 | 358 | bool delete = false; |
5bcb0f2b | 359 | Unit *u = NULL; |
07b0b134 | 360 | int r; |
4e85aff4 LP |
361 | SwapParameters *p; |
362 | ||
363 | assert(m); | |
364 | assert(what); | |
6b1dc2bd | 365 | assert(what_proc_swaps); |
07b0b134 | 366 | |
7410616c LP |
367 | r = unit_name_from_path(what, ".swap", &e); |
368 | if (r < 0) | |
f2341e0a | 369 | return log_unit_error_errno(u, r, "Failed to generate unit name from path: %m"); |
07b0b134 | 370 | |
e04aad61 LP |
371 | u = manager_get_unit(m, e); |
372 | ||
6b1dc2bd | 373 | if (u && |
e04aad61 | 374 | SWAP(u)->from_proc_swaps && |
628c89cc LP |
375 | !path_equal(SWAP(u)->parameters_proc_swaps.what, what_proc_swaps)) { |
376 | log_error("Swap %s appeared twice with different device paths %s and %s", e, SWAP(u)->parameters_proc_swaps.what, what_proc_swaps); | |
e04aad61 | 377 | return -EEXIST; |
628c89cc | 378 | } |
4e85aff4 LP |
379 | |
380 | if (!u) { | |
07b0b134 ML |
381 | delete = true; |
382 | ||
a581e45a | 383 | r = unit_new_for_name(m, sizeof(Swap), e, &u); |
7d17cfbc | 384 | if (r < 0) |
e04aad61 LP |
385 | goto fail; |
386 | ||
7d17cfbc MS |
387 | SWAP(u)->what = strdup(what); |
388 | if (!SWAP(u)->what) { | |
628c89cc | 389 | r = -ENOMEM; |
e04aad61 LP |
390 | goto fail; |
391 | } | |
392 | ||
393 | unit_add_to_load_queue(u); | |
4e85aff4 LP |
394 | } else |
395 | delete = false; | |
07b0b134 | 396 | |
6b1dc2bd | 397 | p = &SWAP(u)->parameters_proc_swaps; |
07b0b134 | 398 | |
6b1dc2bd | 399 | if (!p->what) { |
5bcb0f2b LP |
400 | p->what = strdup(what_proc_swaps); |
401 | if (!p->what) { | |
402 | r = -ENOMEM; | |
6b1dc2bd LP |
403 | goto fail; |
404 | } | |
6b1dc2bd | 405 | } |
e04aad61 | 406 | |
6b1dc2bd LP |
407 | if (set_flags) { |
408 | SWAP(u)->is_active = true; | |
409 | SWAP(u)->just_activated = !SWAP(u)->from_proc_swaps; | |
4e85aff4 | 410 | } |
07b0b134 | 411 | |
6b1dc2bd LP |
412 | SWAP(u)->from_proc_swaps = true; |
413 | ||
4e85aff4 | 414 | p->priority = priority; |
07b0b134 | 415 | |
4e85aff4 | 416 | unit_add_to_dbus_queue(u); |
07b0b134 ML |
417 | return 0; |
418 | ||
419 | fail: | |
f2341e0a | 420 | log_unit_warning_errno(u, r, "Failed to load swap unit: %m"); |
e04aad61 | 421 | |
c9d5c9c0 | 422 | if (delete) |
07b0b134 ML |
423 | unit_free(u); |
424 | ||
4e85aff4 | 425 | return r; |
07b0b134 ML |
426 | } |
427 | ||
628c89cc | 428 | static int swap_process_new(Manager *m, const char *device, int prio, bool set_flags) { |
4366e598 YW |
429 | _cleanup_(sd_device_unrefp) sd_device *d = NULL; |
430 | const char *dn, *devlink; | |
431 | struct stat st, st_link; | |
5bcb0f2b | 432 | int r; |
e04aad61 LP |
433 | |
434 | assert(m); | |
435 | ||
628c89cc | 436 | r = swap_setup_unit(m, device, device, prio, set_flags); |
5bcb0f2b LP |
437 | if (r < 0) |
438 | return r; | |
e04aad61 | 439 | |
5bcb0f2b LP |
440 | /* If this is a block device, then let's add duplicates for |
441 | * all other names of this block device */ | |
442 | if (stat(device, &st) < 0 || !S_ISBLK(st.st_mode)) | |
443 | return 0; | |
e04aad61 | 444 | |
4366e598 | 445 | r = device_new_from_stat_rdev(&d, &st); |
e5ca27b7 LP |
446 | if (r < 0) { |
447 | log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, | |
4366e598 | 448 | "Failed to allocate device for swap %s: %m", device); |
5bcb0f2b | 449 | return 0; |
e5ca27b7 | 450 | } |
e04aad61 | 451 | |
5bcb0f2b | 452 | /* Add the main device node */ |
4366e598 | 453 | if (sd_device_get_devname(d, &dn) >= 0 && !streq(dn, device)) |
628c89cc | 454 | swap_setup_unit(m, dn, device, prio, set_flags); |
e04aad61 | 455 | |
5bcb0f2b | 456 | /* Add additional units for all symlinks */ |
4366e598 | 457 | FOREACH_DEVICE_DEVLINK(d, devlink) { |
e04aad61 | 458 | |
5bcb0f2b | 459 | /* Don't bother with the /dev/block links */ |
4366e598 | 460 | if (streq(devlink, device)) |
5bcb0f2b | 461 | continue; |
e04aad61 | 462 | |
4366e598 | 463 | if (path_startswith(devlink, "/dev/block/")) |
5bcb0f2b | 464 | continue; |
e04aad61 | 465 | |
4366e598 YW |
466 | if (stat(devlink, &st_link) >= 0 && |
467 | (!S_ISBLK(st_link.st_mode) || | |
468 | st_link.st_rdev != st.st_rdev)) | |
469 | continue; | |
e04aad61 | 470 | |
4366e598 | 471 | swap_setup_unit(m, devlink, device, prio, set_flags); |
e04aad61 LP |
472 | } |
473 | ||
e04aad61 LP |
474 | return r; |
475 | } | |
476 | ||
07b0b134 ML |
477 | static void swap_set_state(Swap *s, SwapState state) { |
478 | SwapState old_state; | |
37cf8fee | 479 | Swap *other; |
e04aad61 | 480 | |
07b0b134 ML |
481 | assert(s); |
482 | ||
483 | old_state = s->state; | |
484 | s->state = state; | |
485 | ||
dedf3719 | 486 | if (!SWAP_STATE_WITH_PROCESS(state)) { |
718db961 | 487 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
e04aad61 LP |
488 | swap_unwatch_control_pid(s); |
489 | s->control_command = NULL; | |
490 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
491 | } | |
492 | ||
07b0b134 | 493 | if (state != old_state) |
f2341e0a | 494 | log_unit_debug(UNIT(s), "Changed %s -> %s", swap_state_to_string(old_state), swap_state_to_string(state)); |
07b0b134 | 495 | |
2ad2e41a | 496 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], 0); |
37cf8fee LP |
497 | |
498 | /* If there other units for the same device node have a job | |
499 | queued it might be worth checking again if it is runnable | |
500 | now. This is necessary, since swap_start() refuses | |
501 | operation with EAGAIN if there's already another job for | |
502 | the same device node queued. */ | |
503 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
504 | if (UNIT(other)->job) | |
505 | job_add_to_run_queue(UNIT(other)->job); | |
07b0b134 ML |
506 | } |
507 | ||
be847e82 | 508 | static int swap_coldplug(Unit *u) { |
07b0b134 ML |
509 | Swap *s = SWAP(u); |
510 | SwapState new_state = SWAP_DEAD; | |
e04aad61 | 511 | int r; |
07b0b134 ML |
512 | |
513 | assert(s); | |
514 | assert(s->state == SWAP_DEAD); | |
515 | ||
516 | if (s->deserialized_state != s->state) | |
517 | new_state = s->deserialized_state; | |
4e85aff4 | 518 | else if (s->from_proc_swaps) |
07b0b134 ML |
519 | new_state = SWAP_ACTIVE; |
520 | ||
5bcb0f2b LP |
521 | if (new_state == s->state) |
522 | return 0; | |
e04aad61 | 523 | |
c386f588 LP |
524 | if (s->control_pid > 0 && |
525 | pid_is_unwaited(s->control_pid) && | |
dedf3719 | 526 | SWAP_STATE_WITH_PROCESS(new_state)) { |
e04aad61 | 527 | |
5bcb0f2b LP |
528 | r = unit_watch_pid(UNIT(s), s->control_pid); |
529 | if (r < 0) | |
530 | return r; | |
e04aad61 | 531 | |
36c16a7c | 532 | r = swap_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_usec)); |
5bcb0f2b LP |
533 | if (r < 0) |
534 | return r; | |
e04aad61 | 535 | } |
07b0b134 | 536 | |
e8a565cb | 537 | if (!IN_SET(new_state, SWAP_DEAD, SWAP_FAILED)) { |
29206d46 | 538 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
539 | (void) unit_setup_exec_runtime(u); |
540 | } | |
29206d46 | 541 | |
5bcb0f2b | 542 | swap_set_state(s, new_state); |
07b0b134 ML |
543 | return 0; |
544 | } | |
545 | ||
546 | static void swap_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 547 | char buf[FORMAT_TIMESPAN_MAX]; |
07b0b134 | 548 | Swap *s = SWAP(u); |
4e85aff4 | 549 | SwapParameters *p; |
07b0b134 ML |
550 | |
551 | assert(s); | |
4e85aff4 LP |
552 | assert(f); |
553 | ||
554 | if (s->from_proc_swaps) | |
555 | p = &s->parameters_proc_swaps; | |
556 | else if (s->from_fragment) | |
557 | p = &s->parameters_fragment; | |
b6bfc7bb LP |
558 | else |
559 | p = NULL; | |
07b0b134 ML |
560 | |
561 | fprintf(f, | |
4e85aff4 | 562 | "%sSwap State: %s\n" |
e1770af8 | 563 | "%sResult: %s\n" |
07b0b134 | 564 | "%sWhat: %s\n" |
4e85aff4 LP |
565 | "%sFrom /proc/swaps: %s\n" |
566 | "%sFrom fragment: %s\n", | |
07b0b134 | 567 | prefix, swap_state_to_string(s->state), |
e1770af8 | 568 | prefix, swap_result_to_string(s->result), |
07b0b134 | 569 | prefix, s->what, |
4e85aff4 LP |
570 | prefix, yes_no(s->from_proc_swaps), |
571 | prefix, yes_no(s->from_fragment)); | |
e04aad61 | 572 | |
9670d583 LP |
573 | if (s->devnode) |
574 | fprintf(f, "%sDevice Node: %s\n", prefix, s->devnode); | |
575 | ||
b6bfc7bb LP |
576 | if (p) |
577 | fprintf(f, | |
578 | "%sPriority: %i\n" | |
47cb901e | 579 | "%sOptions: %s\n", |
b6bfc7bb | 580 | prefix, p->priority, |
47cb901e | 581 | prefix, strempty(p->options)); |
b6bfc7bb | 582 | |
9bd0e1b8 YW |
583 | fprintf(f, |
584 | "%sTimeoutSec: %s\n", | |
585 | prefix, format_timespan(buf, sizeof(buf), s->timeout_usec, USEC_PER_SEC)); | |
586 | ||
e04aad61 LP |
587 | if (s->control_pid > 0) |
588 | fprintf(f, | |
de0671ee ZJS |
589 | "%sControl PID: "PID_FMT"\n", |
590 | prefix, s->control_pid); | |
e04aad61 LP |
591 | |
592 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 593 | kill_context_dump(&s->kill_context, f, prefix); |
18f573aa | 594 | cgroup_context_dump(&s->cgroup_context, f, prefix); |
e04aad61 LP |
595 | } |
596 | ||
597 | static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) { | |
3c7416b6 | 598 | |
b9c04eaf | 599 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
1703fa41 | 600 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
601 | .stdin_fd = -1, |
602 | .stdout_fd = -1, | |
603 | .stderr_fd = -1, | |
5686391b | 604 | .exec_fd = -1, |
9fa95f85 | 605 | }; |
3c7416b6 LP |
606 | pid_t pid; |
607 | int r; | |
e04aad61 LP |
608 | |
609 | assert(s); | |
610 | assert(c); | |
611 | assert(_pid); | |
612 | ||
3c7416b6 | 613 | r = unit_prepare_exec(UNIT(s)); |
29206d46 | 614 | if (r < 0) |
3c7416b6 | 615 | return r; |
29206d46 | 616 | |
36c16a7c | 617 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 618 | if (r < 0) |
e04aad61 LP |
619 | goto fail; |
620 | ||
1ad6e8b3 LP |
621 | r = unit_set_exec_params(UNIT(s), &exec_params); |
622 | if (r < 0) | |
623 | goto fail; | |
9fa95f85 | 624 | |
f2341e0a LP |
625 | r = exec_spawn(UNIT(s), |
626 | c, | |
646134dc | 627 | &s->exec_context, |
9fa95f85 | 628 | &exec_params, |
613b411c | 629 | s->exec_runtime, |
29206d46 | 630 | &s->dynamic_creds, |
646134dc ZJS |
631 | &pid); |
632 | if (r < 0) | |
e04aad61 LP |
633 | goto fail; |
634 | ||
646134dc ZJS |
635 | r = unit_watch_pid(UNIT(s), pid); |
636 | if (r < 0) | |
e04aad61 LP |
637 | /* FIXME: we need to do something here */ |
638 | goto fail; | |
639 | ||
640 | *_pid = pid; | |
641 | ||
642 | return 0; | |
643 | ||
644 | fail: | |
718db961 | 645 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
3536f49e | 646 | |
e04aad61 | 647 | return r; |
07b0b134 ML |
648 | } |
649 | ||
e1770af8 | 650 | static void swap_enter_dead(Swap *s, SwapResult f) { |
07b0b134 ML |
651 | assert(s); |
652 | ||
a0fef983 | 653 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 654 | s->result = f; |
e04aad61 | 655 | |
ed77d407 | 656 | if (s->result != SWAP_SUCCESS) |
7c047d74 | 657 | unit_log_failure(UNIT(s), swap_result_to_string(s->result)); |
ed77d407 | 658 | |
29206d46 LP |
659 | swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD); |
660 | ||
e8a565cb | 661 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
613b411c | 662 | |
3536f49e | 663 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 664 | |
00d9ef85 LP |
665 | unit_unref_uid_gid(UNIT(s), true); |
666 | ||
29206d46 | 667 | dynamic_creds_destroy(&s->dynamic_creds); |
07b0b134 ML |
668 | } |
669 | ||
e1770af8 | 670 | static void swap_enter_active(Swap *s, SwapResult f) { |
e04aad61 LP |
671 | assert(s); |
672 | ||
a0fef983 | 673 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 674 | s->result = f; |
e04aad61 LP |
675 | |
676 | swap_set_state(s, SWAP_ACTIVE); | |
677 | } | |
678 | ||
50864457 LP |
679 | static void swap_enter_dead_or_active(Swap *s, SwapResult f) { |
680 | assert(s); | |
681 | ||
682 | if (s->from_proc_swaps) | |
683 | swap_enter_active(s, f); | |
684 | else | |
685 | swap_enter_dead(s, f); | |
686 | } | |
687 | ||
e1770af8 | 688 | static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) { |
07b0b134 | 689 | int r; |
d31ae548 | 690 | KillOperation kop; |
07b0b134 ML |
691 | |
692 | assert(s); | |
e04aad61 | 693 | |
a0fef983 | 694 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 695 | s->result = f; |
e04aad61 | 696 | |
50864457 | 697 | if (state == SWAP_DEACTIVATING_SIGTERM) |
d31ae548 FB |
698 | kop = KILL_TERMINATE; |
699 | else | |
700 | kop = KILL_KILL; | |
701 | ||
702 | r = unit_kill_context(UNIT(s), &s->kill_context, kop, -1, s->control_pid, false); | |
cd2086fe LP |
703 | if (r < 0) |
704 | goto fail; | |
e04aad61 | 705 | |
cd2086fe | 706 | if (r > 0) { |
36c16a7c | 707 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 708 | if (r < 0) |
e04aad61 LP |
709 | goto fail; |
710 | ||
711 | swap_set_state(s, state); | |
50864457 | 712 | } else if (state == SWAP_DEACTIVATING_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb LP |
713 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_SUCCESS); |
714 | else | |
50864457 | 715 | swap_enter_dead_or_active(s, SWAP_SUCCESS); |
e04aad61 LP |
716 | |
717 | return; | |
718 | ||
719 | fail: | |
f2341e0a | 720 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
50864457 | 721 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
722 | } |
723 | ||
724 | static void swap_enter_activating(Swap *s) { | |
bf1d7ba7 KZ |
725 | _cleanup_free_ char *opts = NULL; |
726 | int r; | |
e04aad61 LP |
727 | |
728 | assert(s); | |
729 | ||
a4634b21 LP |
730 | unit_warn_leftover_processes(UNIT(s)); |
731 | ||
e04aad61 LP |
732 | s->control_command_id = SWAP_EXEC_ACTIVATE; |
733 | s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE; | |
07b0b134 | 734 | |
86b23b07 | 735 | if (s->from_fragment) { |
bf1d7ba7 | 736 | int priority = -1; |
47cb901e | 737 | |
bf1d7ba7 KZ |
738 | r = fstab_find_pri(s->parameters_fragment.options, &priority); |
739 | if (r < 0) | |
740 | log_warning_errno(r, "Failed to parse swap priority \"%s\", ignoring: %m", s->parameters_fragment.options); | |
741 | else if (r == 1 && s->parameters_fragment.priority >= 0) | |
742 | log_warning("Duplicate swap priority configuration by Priority and Options fields."); | |
743 | ||
744 | if (r <= 0 && s->parameters_fragment.priority >= 0) { | |
745 | if (s->parameters_fragment.options) | |
746 | r = asprintf(&opts, "%s,pri=%i", s->parameters_fragment.options, s->parameters_fragment.priority); | |
747 | else | |
748 | r = asprintf(&opts, "pri=%i", s->parameters_fragment.priority); | |
e64d5235 | 749 | if (r < 0) |
bf1d7ba7 | 750 | goto fail; |
e64d5235 | 751 | } |
86b23b07 JS |
752 | } |
753 | ||
754 | r = exec_command_set(s->control_command, "/sbin/swapon", NULL); | |
755 | if (r < 0) | |
756 | goto fail; | |
4e85aff4 | 757 | |
bf1d7ba7 KZ |
758 | if (s->parameters_fragment.options || opts) { |
759 | r = exec_command_append(s->control_command, "-o", | |
760 | opts ? : s->parameters_fragment.options, NULL); | |
86b23b07 JS |
761 | if (r < 0) |
762 | goto fail; | |
763 | } | |
e04aad61 | 764 | |
86b23b07 | 765 | r = exec_command_append(s->control_command, s->what, NULL); |
e04aad61 LP |
766 | if (r < 0) |
767 | goto fail; | |
768 | ||
769 | swap_unwatch_control_pid(s); | |
770 | ||
646134dc ZJS |
771 | r = swap_spawn(s, s->control_command, &s->control_pid); |
772 | if (r < 0) | |
e04aad61 LP |
773 | goto fail; |
774 | ||
775 | swap_set_state(s, SWAP_ACTIVATING); | |
776 | ||
777 | return; | |
778 | ||
779 | fail: | |
f2341e0a | 780 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapon' task: %m"); |
50864457 | 781 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
782 | } |
783 | ||
e1770af8 | 784 | static void swap_enter_deactivating(Swap *s) { |
e04aad61 LP |
785 | int r; |
786 | ||
787 | assert(s); | |
788 | ||
e04aad61 LP |
789 | s->control_command_id = SWAP_EXEC_DEACTIVATE; |
790 | s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE; | |
791 | ||
646134dc | 792 | r = exec_command_set(s->control_command, |
e04aad61 LP |
793 | "/sbin/swapoff", |
794 | s->what, | |
646134dc ZJS |
795 | NULL); |
796 | if (r < 0) | |
e04aad61 LP |
797 | goto fail; |
798 | ||
799 | swap_unwatch_control_pid(s); | |
800 | ||
646134dc ZJS |
801 | r = swap_spawn(s, s->control_command, &s->control_pid); |
802 | if (r < 0) | |
e04aad61 LP |
803 | goto fail; |
804 | ||
805 | swap_set_state(s, SWAP_DEACTIVATING); | |
806 | ||
807 | return; | |
808 | ||
809 | fail: | |
f2341e0a | 810 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapoff' task: %m"); |
50864457 | 811 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
812 | } |
813 | ||
814 | static int swap_start(Unit *u) { | |
37cf8fee | 815 | Swap *s = SWAP(u), *other; |
07299350 | 816 | int r; |
e04aad61 LP |
817 | |
818 | assert(s); | |
819 | ||
50864457 | 820 | /* We cannot fulfill this request right now, try again later please! */ |
d31ae548 FB |
821 | if (IN_SET(s->state, |
822 | SWAP_DEACTIVATING, | |
823 | SWAP_DEACTIVATING_SIGTERM, | |
50864457 | 824 | SWAP_DEACTIVATING_SIGKILL)) |
e04aad61 LP |
825 | return -EAGAIN; |
826 | ||
50864457 | 827 | /* Already on it! */ |
e04aad61 LP |
828 | if (s->state == SWAP_ACTIVATING) |
829 | return 0; | |
830 | ||
d31ae548 | 831 | assert(IN_SET(s->state, SWAP_DEAD, SWAP_FAILED)); |
e04aad61 | 832 | |
75f86906 | 833 | if (detect_container() > 0) |
a5c3034f LP |
834 | return -EPERM; |
835 | ||
37cf8fee LP |
836 | /* If there's a job for another swap unit for the same node |
837 | * running, then let's not dispatch this one for now, and wait | |
838 | * until that other job has finished. */ | |
839 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
840 | if (UNIT(other)->job && UNIT(other)->job->state == JOB_RUNNING) | |
841 | return -EAGAIN; | |
842 | ||
07299350 LP |
843 | r = unit_start_limit_test(u); |
844 | if (r < 0) { | |
845 | swap_enter_dead(s, SWAP_FAILURE_START_LIMIT_HIT); | |
846 | return r; | |
847 | } | |
848 | ||
4b58153d LP |
849 | r = unit_acquire_invocation_id(u); |
850 | if (r < 0) | |
851 | return r; | |
852 | ||
e1770af8 | 853 | s->result = SWAP_SUCCESS; |
6a1d4d9f | 854 | exec_command_reset_status_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); |
3c7416b6 LP |
855 | |
856 | u->reset_accounting = true; | |
5ad096b3 | 857 | |
e04aad61 | 858 | swap_enter_activating(s); |
82a2b6bb | 859 | return 1; |
07b0b134 ML |
860 | } |
861 | ||
862 | static int swap_stop(Unit *u) { | |
863 | Swap *s = SWAP(u); | |
07b0b134 ML |
864 | |
865 | assert(s); | |
866 | ||
50864457 LP |
867 | switch (s->state) { |
868 | ||
869 | case SWAP_DEACTIVATING: | |
870 | case SWAP_DEACTIVATING_SIGTERM: | |
871 | case SWAP_DEACTIVATING_SIGKILL: | |
872 | /* Already on it */ | |
e04aad61 | 873 | return 0; |
07b0b134 | 874 | |
50864457 LP |
875 | case SWAP_ACTIVATING: |
876 | case SWAP_ACTIVATING_DONE: | |
877 | /* There's a control process pending, directly enter kill mode */ | |
878 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_SUCCESS); | |
879 | return 0; | |
07b0b134 | 880 | |
50864457 LP |
881 | case SWAP_ACTIVE: |
882 | if (detect_container() > 0) | |
883 | return -EPERM; | |
a5c3034f | 884 | |
50864457 LP |
885 | swap_enter_deactivating(s); |
886 | return 1; | |
887 | ||
888 | default: | |
889 | assert_not_reached("Unexpected state."); | |
890 | } | |
07b0b134 ML |
891 | } |
892 | ||
893 | static int swap_serialize(Unit *u, FILE *f, FDSet *fds) { | |
894 | Swap *s = SWAP(u); | |
895 | ||
896 | assert(s); | |
897 | assert(f); | |
898 | assert(fds); | |
899 | ||
d68c645b LP |
900 | (void) serialize_item(f, "state", swap_state_to_string(s->state)); |
901 | (void) serialize_item(f, "result", swap_result_to_string(s->result)); | |
e04aad61 LP |
902 | |
903 | if (s->control_pid > 0) | |
d68c645b | 904 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
e04aad61 LP |
905 | |
906 | if (s->control_command_id >= 0) | |
d68c645b | 907 | (void) serialize_item(f, "control-command", swap_exec_command_to_string(s->control_command_id)); |
07b0b134 ML |
908 | |
909 | return 0; | |
910 | } | |
911 | ||
912 | static int swap_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
913 | Swap *s = SWAP(u); | |
914 | ||
915 | assert(s); | |
916 | assert(fds); | |
917 | ||
918 | if (streq(key, "state")) { | |
919 | SwapState state; | |
920 | ||
646134dc ZJS |
921 | state = swap_state_from_string(value); |
922 | if (state < 0) | |
f2341e0a | 923 | log_unit_debug(u, "Failed to parse state value: %s", value); |
07b0b134 ML |
924 | else |
925 | s->deserialized_state = state; | |
e1770af8 LP |
926 | } else if (streq(key, "result")) { |
927 | SwapResult f; | |
928 | ||
929 | f = swap_result_from_string(value); | |
930 | if (f < 0) | |
f2341e0a | 931 | log_unit_debug(u, "Failed to parse result value: %s", value); |
e1770af8 LP |
932 | else if (f != SWAP_SUCCESS) |
933 | s->result = f; | |
e04aad61 LP |
934 | } else if (streq(key, "control-pid")) { |
935 | pid_t pid; | |
936 | ||
937 | if (parse_pid(value, &pid) < 0) | |
f2341e0a | 938 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
e04aad61 LP |
939 | else |
940 | s->control_pid = pid; | |
941 | ||
942 | } else if (streq(key, "control-command")) { | |
943 | SwapExecCommand id; | |
944 | ||
646134dc ZJS |
945 | id = swap_exec_command_from_string(value); |
946 | if (id < 0) | |
f2341e0a | 947 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
e04aad61 LP |
948 | else { |
949 | s->control_command_id = id; | |
950 | s->control_command = s->exec_command + id; | |
951 | } | |
07b0b134 | 952 | } else |
f2341e0a | 953 | log_unit_debug(u, "Unknown serialization key: %s", key); |
07b0b134 ML |
954 | |
955 | return 0; | |
956 | } | |
957 | ||
44a6b1b6 | 958 | _pure_ static UnitActiveState swap_active_state(Unit *u) { |
07b0b134 ML |
959 | assert(u); |
960 | ||
961 | return state_translation_table[SWAP(u)->state]; | |
962 | } | |
963 | ||
44a6b1b6 | 964 | _pure_ static const char *swap_sub_state_to_string(Unit *u) { |
07b0b134 ML |
965 | assert(u); |
966 | ||
967 | return swap_state_to_string(SWAP(u)->state); | |
968 | } | |
969 | ||
f2f725e5 | 970 | _pure_ static bool swap_may_gc(Unit *u) { |
07b0b134 ML |
971 | Swap *s = SWAP(u); |
972 | ||
973 | assert(s); | |
974 | ||
f2f725e5 ZJS |
975 | if (s->from_proc_swaps) |
976 | return false; | |
977 | ||
978 | return true; | |
07b0b134 ML |
979 | } |
980 | ||
e04aad61 LP |
981 | static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
982 | Swap *s = SWAP(u); | |
e1770af8 | 983 | SwapResult f; |
e04aad61 LP |
984 | |
985 | assert(s); | |
986 | assert(pid >= 0); | |
987 | ||
988 | if (pid != s->control_pid) | |
989 | return; | |
990 | ||
991 | s->control_pid = 0; | |
992 | ||
1f0958f6 | 993 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
e1770af8 LP |
994 | f = SWAP_SUCCESS; |
995 | else if (code == CLD_EXITED) | |
996 | f = SWAP_FAILURE_EXIT_CODE; | |
997 | else if (code == CLD_KILLED) | |
998 | f = SWAP_FAILURE_SIGNAL; | |
999 | else if (code == CLD_DUMPED) | |
1000 | f = SWAP_FAILURE_CORE_DUMP; | |
1001 | else | |
1002 | assert_not_reached("Unknown code"); | |
1003 | ||
a0fef983 | 1004 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 1005 | s->result = f; |
e04aad61 LP |
1006 | |
1007 | if (s->control_command) { | |
6ea832a2 | 1008 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
e1770af8 | 1009 | |
e04aad61 LP |
1010 | s->control_command = NULL; |
1011 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
1012 | } | |
1013 | ||
91bbd9b7 LP |
1014 | unit_log_process_exit( |
1015 | u, f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1016 | "Swap process", | |
1017 | swap_exec_command_to_string(s->control_command_id), | |
1018 | code, status); | |
e04aad61 LP |
1019 | |
1020 | switch (s->state) { | |
1021 | ||
1022 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1023 | case SWAP_ACTIVATING_DONE: |
e04aad61 | 1024 | |
50864457 | 1025 | if (f == SWAP_SUCCESS || s->from_proc_swaps) |
e1770af8 | 1026 | swap_enter_active(s, f); |
e04aad61 | 1027 | else |
e1770af8 | 1028 | swap_enter_dead(s, f); |
e04aad61 LP |
1029 | break; |
1030 | ||
1031 | case SWAP_DEACTIVATING: | |
1032 | case SWAP_DEACTIVATING_SIGKILL: | |
1033 | case SWAP_DEACTIVATING_SIGTERM: | |
1034 | ||
50864457 | 1035 | swap_enter_dead_or_active(s, f); |
e04aad61 LP |
1036 | break; |
1037 | ||
1038 | default: | |
1039 | assert_not_reached("Uh, control process died at wrong time."); | |
1040 | } | |
1041 | ||
1042 | /* Notify clients about changed exit status */ | |
1043 | unit_add_to_dbus_queue(u); | |
e04aad61 LP |
1044 | } |
1045 | ||
718db961 LP |
1046 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1047 | Swap *s = SWAP(userdata); | |
e04aad61 LP |
1048 | |
1049 | assert(s); | |
718db961 | 1050 | assert(s->timer_event_source == source); |
e04aad61 LP |
1051 | |
1052 | switch (s->state) { | |
1053 | ||
1054 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1055 | case SWAP_ACTIVATING_DONE: |
f2341e0a | 1056 | log_unit_warning(UNIT(s), "Activation timed out. Stopping."); |
50864457 | 1057 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1058 | break; |
1059 | ||
1060 | case SWAP_DEACTIVATING: | |
f2341e0a | 1061 | log_unit_warning(UNIT(s), "Deactivation timed out. Stopping."); |
e1770af8 | 1062 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1063 | break; |
1064 | ||
e04aad61 | 1065 | case SWAP_DEACTIVATING_SIGTERM: |
4819ff03 | 1066 | if (s->kill_context.send_sigkill) { |
50864457 | 1067 | log_unit_warning(UNIT(s), "Swap process timed out. Killing."); |
e1770af8 | 1068 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1069 | } else { |
50864457 LP |
1070 | log_unit_warning(UNIT(s), "Swap process timed out. Skipping SIGKILL. Ignoring."); |
1071 | swap_enter_dead_or_active(s, SWAP_FAILURE_TIMEOUT); | |
ba035df2 | 1072 | } |
e04aad61 LP |
1073 | break; |
1074 | ||
e04aad61 | 1075 | case SWAP_DEACTIVATING_SIGKILL: |
f2341e0a | 1076 | log_unit_warning(UNIT(s), "Swap process still around after SIGKILL. Ignoring."); |
50864457 | 1077 | swap_enter_dead_or_active(s, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1078 | break; |
1079 | ||
1080 | default: | |
1081 | assert_not_reached("Timeout at wrong time."); | |
1082 | } | |
718db961 LP |
1083 | |
1084 | return 0; | |
e04aad61 LP |
1085 | } |
1086 | ||
1087 | static int swap_load_proc_swaps(Manager *m, bool set_flags) { | |
1088 | unsigned i; | |
1089 | int r = 0; | |
1090 | ||
1091 | assert(m); | |
1092 | ||
07b0b134 | 1093 | rewind(m->proc_swaps); |
bab45044 | 1094 | |
4e85aff4 | 1095 | (void) fscanf(m->proc_swaps, "%*s %*s %*s %*s %*s\n"); |
07b0b134 | 1096 | |
e04aad61 | 1097 | for (i = 1;; i++) { |
9fb3675e | 1098 | _cleanup_free_ char *dev = NULL, *d = NULL; |
07b0b134 ML |
1099 | int prio = 0, k; |
1100 | ||
646134dc ZJS |
1101 | k = fscanf(m->proc_swaps, |
1102 | "%ms " /* device/file */ | |
1103 | "%*s " /* type of swap */ | |
1104 | "%*s " /* swap size */ | |
1105 | "%*s " /* used */ | |
1106 | "%i\n", /* priority */ | |
1107 | &dev, &prio); | |
1108 | if (k != 2) { | |
07b0b134 | 1109 | if (k == EOF) |
4e85aff4 | 1110 | break; |
07b0b134 | 1111 | |
628c89cc | 1112 | log_warning("Failed to parse /proc/swaps:%u.", i); |
e04aad61 | 1113 | continue; |
07b0b134 | 1114 | } |
07b0b134 | 1115 | |
527b7a42 | 1116 | if (cunescape(dev, UNESCAPE_RELAX, &d) < 0) |
628c89cc LP |
1117 | return log_oom(); |
1118 | ||
485ae697 | 1119 | device_found_node(m, d, DEVICE_FOUND_SWAP, DEVICE_FOUND_SWAP); |
4e85aff4 | 1120 | |
628c89cc | 1121 | k = swap_process_new(m, d, prio, set_flags); |
07b0b134 | 1122 | if (k < 0) |
e04aad61 | 1123 | r = k; |
07b0b134 ML |
1124 | } |
1125 | ||
e04aad61 LP |
1126 | return r; |
1127 | } | |
1128 | ||
718db961 LP |
1129 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { |
1130 | Manager *m = userdata; | |
595ed347 | 1131 | Unit *u; |
4e434314 LP |
1132 | int r; |
1133 | ||
1134 | assert(m); | |
718db961 | 1135 | assert(revents & EPOLLPRI); |
4e434314 | 1136 | |
646134dc ZJS |
1137 | r = swap_load_proc_swaps(m, true); |
1138 | if (r < 0) { | |
da927ba9 | 1139 | log_error_errno(r, "Failed to reread /proc/swaps: %m"); |
e04aad61 LP |
1140 | |
1141 | /* Reset flags, just in case, for late calls */ | |
595ed347 MS |
1142 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) { |
1143 | Swap *swap = SWAP(u); | |
e04aad61 LP |
1144 | |
1145 | swap->is_active = swap->just_activated = false; | |
1146 | } | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | manager_dispatch_load_queue(m); | |
1152 | ||
595ed347 MS |
1153 | LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) { |
1154 | Swap *swap = SWAP(u); | |
e04aad61 LP |
1155 | |
1156 | if (!swap->is_active) { | |
1157 | /* This has just been deactivated */ | |
1158 | ||
e04aad61 LP |
1159 | swap_unset_proc_swaps(swap); |
1160 | ||
1161 | switch (swap->state) { | |
1162 | ||
1163 | case SWAP_ACTIVE: | |
e1770af8 | 1164 | swap_enter_dead(swap, SWAP_SUCCESS); |
e04aad61 LP |
1165 | break; |
1166 | ||
1167 | default: | |
5bcb0f2b | 1168 | /* Fire again */ |
e04aad61 LP |
1169 | swap_set_state(swap, swap->state); |
1170 | break; | |
1171 | } | |
1172 | ||
628c89cc | 1173 | if (swap->what) |
485ae697 | 1174 | device_found_node(m, swap->what, 0, DEVICE_FOUND_SWAP); |
628c89cc | 1175 | |
e04aad61 LP |
1176 | } else if (swap->just_activated) { |
1177 | ||
1178 | /* New swap entry */ | |
1179 | ||
1180 | switch (swap->state) { | |
1181 | ||
1182 | case SWAP_DEAD: | |
1183 | case SWAP_FAILED: | |
4b58153d | 1184 | (void) unit_acquire_invocation_id(UNIT(swap)); |
e1770af8 | 1185 | swap_enter_active(swap, SWAP_SUCCESS); |
e04aad61 LP |
1186 | break; |
1187 | ||
5bcb0f2b LP |
1188 | case SWAP_ACTIVATING: |
1189 | swap_set_state(swap, SWAP_ACTIVATING_DONE); | |
1190 | break; | |
1191 | ||
e04aad61 LP |
1192 | default: |
1193 | /* Nothing really changed, but let's | |
1194 | * issue an notification call | |
1195 | * nonetheless, in case somebody is | |
1196 | * waiting for this. */ | |
1197 | swap_set_state(swap, swap->state); | |
1198 | break; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | /* Reset the flags for later calls */ | |
1203 | swap->is_active = swap->just_activated = false; | |
1204 | } | |
1205 | ||
1206 | return 1; | |
1207 | } | |
1208 | ||
1209 | static Unit *swap_following(Unit *u) { | |
1210 | Swap *s = SWAP(u); | |
1211 | Swap *other, *first = NULL; | |
1212 | ||
1213 | assert(s); | |
1214 | ||
cdc89820 ZJS |
1215 | /* If the user configured the swap through /etc/fstab or |
1216 | * a device unit, follow that. */ | |
1217 | ||
1218 | if (s->from_fragment) | |
e04aad61 LP |
1219 | return NULL; |
1220 | ||
caac2704 | 1221 | LIST_FOREACH_OTHERS(same_devnode, other, s) |
cdc89820 ZJS |
1222 | if (other->from_fragment) |
1223 | return UNIT(other); | |
1224 | ||
b938cb90 | 1225 | /* Otherwise, make everybody follow the unit that's named after |
cdc89820 ZJS |
1226 | * the swap device in the kernel */ |
1227 | ||
1228 | if (streq_ptr(s->what, s->devnode)) | |
1229 | return NULL; | |
e04aad61 | 1230 | |
9670d583 LP |
1231 | LIST_FOREACH_AFTER(same_devnode, other, s) |
1232 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1233 | return UNIT(other); |
1234 | ||
9670d583 LP |
1235 | LIST_FOREACH_BEFORE(same_devnode, other, s) { |
1236 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1237 | return UNIT(other); |
1238 | ||
1239 | first = other; | |
1240 | } | |
1241 | ||
cdc89820 | 1242 | /* Fall back to the first on the list */ |
e04aad61 | 1243 | return UNIT(first); |
07b0b134 ML |
1244 | } |
1245 | ||
6210e7fc | 1246 | static int swap_following_set(Unit *u, Set **_set) { |
5bcb0f2b | 1247 | Swap *s = SWAP(u), *other; |
af4fa99d | 1248 | _cleanup_set_free_ Set *set = NULL; |
6210e7fc LP |
1249 | int r; |
1250 | ||
1251 | assert(s); | |
1252 | assert(_set); | |
1253 | ||
9670d583 | 1254 | if (LIST_JUST_US(same_devnode, s)) { |
6210e7fc LP |
1255 | *_set = NULL; |
1256 | return 0; | |
1257 | } | |
1258 | ||
d5099efc | 1259 | set = set_new(NULL); |
5bcb0f2b | 1260 | if (!set) |
6210e7fc LP |
1261 | return -ENOMEM; |
1262 | ||
caac2704 | 1263 | LIST_FOREACH_OTHERS(same_devnode, other, s) { |
5bcb0f2b LP |
1264 | r = set_put(set, other); |
1265 | if (r < 0) | |
95f14a3e | 1266 | return r; |
5bcb0f2b | 1267 | } |
6210e7fc | 1268 | |
95f14a3e | 1269 | *_set = TAKE_PTR(set); |
6210e7fc | 1270 | return 1; |
6210e7fc LP |
1271 | } |
1272 | ||
07b0b134 ML |
1273 | static void swap_shutdown(Manager *m) { |
1274 | assert(m); | |
1275 | ||
718db961 | 1276 | m->swap_event_source = sd_event_source_unref(m->swap_event_source); |
74ca738f | 1277 | m->proc_swaps = safe_fclose(m->proc_swaps); |
525d3cc7 | 1278 | m->swaps_by_devnode = hashmap_free(m->swaps_by_devnode); |
07b0b134 ML |
1279 | } |
1280 | ||
ba64af90 | 1281 | static void swap_enumerate(Manager *m) { |
07b0b134 | 1282 | int r; |
9670d583 | 1283 | |
07b0b134 ML |
1284 | assert(m); |
1285 | ||
4e434314 | 1286 | if (!m->proc_swaps) { |
646134dc | 1287 | m->proc_swaps = fopen("/proc/swaps", "re"); |
ba64af90 LP |
1288 | if (!m->proc_swaps) { |
1289 | if (errno == ENOENT) | |
cb209a04 | 1290 | log_debug_errno(errno, "Not swap enabled, skipping enumeration."); |
ba64af90 | 1291 | else |
cb209a04 | 1292 | log_warning_errno(errno, "Failed to open /proc/swaps, ignoring: %m"); |
ba64af90 LP |
1293 | |
1294 | return; | |
1295 | } | |
4e434314 | 1296 | |
151b9b96 | 1297 | r = sd_event_add_io(m->event, &m->swap_event_source, fileno(m->proc_swaps), EPOLLPRI, swap_dispatch_io, m); |
ba64af90 LP |
1298 | if (r < 0) { |
1299 | log_error_errno(r, "Failed to watch /proc/swaps: %m"); | |
29083707 | 1300 | goto fail; |
ba64af90 | 1301 | } |
29083707 LP |
1302 | |
1303 | /* Dispatch this before we dispatch SIGCHLD, so that | |
1304 | * we always get the events from /proc/swaps before | |
1305 | * the SIGCHLD of /sbin/swapon. */ | |
83231637 | 1306 | r = sd_event_source_set_priority(m->swap_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1307 | if (r < 0) { |
1308 | log_error_errno(r, "Failed to change /proc/swaps priority: %m"); | |
718db961 | 1309 | goto fail; |
ba64af90 | 1310 | } |
7dfbe2e3 TG |
1311 | |
1312 | (void) sd_event_source_set_description(m->swap_event_source, "swap-proc"); | |
4e434314 LP |
1313 | } |
1314 | ||
646134dc ZJS |
1315 | r = swap_load_proc_swaps(m, false); |
1316 | if (r < 0) | |
718db961 LP |
1317 | goto fail; |
1318 | ||
ba64af90 | 1319 | return; |
07b0b134 | 1320 | |
718db961 LP |
1321 | fail: |
1322 | swap_shutdown(m); | |
07b0b134 ML |
1323 | } |
1324 | ||
4366e598 | 1325 | int swap_process_device_new(Manager *m, sd_device *dev) { |
9670d583 | 1326 | _cleanup_free_ char *e = NULL; |
4366e598 | 1327 | const char *dn, *devlink; |
cabf58b2 | 1328 | Unit *u; |
9670d583 LP |
1329 | int r = 0; |
1330 | ||
1331 | assert(m); | |
1332 | assert(dev); | |
1333 | ||
4366e598 YW |
1334 | r = sd_device_get_devname(dev, &dn); |
1335 | if (r < 0) | |
9670d583 LP |
1336 | return 0; |
1337 | ||
7410616c LP |
1338 | r = unit_name_from_path(dn, ".swap", &e); |
1339 | if (r < 0) | |
1340 | return r; | |
9670d583 | 1341 | |
cabf58b2 FB |
1342 | u = manager_get_unit(m, e); |
1343 | if (u) | |
1344 | r = swap_set_devnode(SWAP(u), dn); | |
9670d583 | 1345 | |
4366e598 | 1346 | FOREACH_DEVICE_DEVLINK(dev, devlink) { |
9670d583 | 1347 | _cleanup_free_ char *n = NULL; |
7410616c | 1348 | int q; |
9670d583 | 1349 | |
4366e598 | 1350 | q = unit_name_from_path(devlink, ".swap", &n); |
7410616c LP |
1351 | if (q < 0) |
1352 | return q; | |
9670d583 | 1353 | |
cabf58b2 FB |
1354 | u = manager_get_unit(m, n); |
1355 | if (u) { | |
1356 | q = swap_set_devnode(SWAP(u), dn); | |
9670d583 LP |
1357 | if (q < 0) |
1358 | r = q; | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | return r; | |
1363 | } | |
1364 | ||
4366e598 | 1365 | int swap_process_device_remove(Manager *m, sd_device *dev) { |
9670d583 LP |
1366 | const char *dn; |
1367 | int r = 0; | |
1368 | Swap *s; | |
1369 | ||
4366e598 YW |
1370 | r = sd_device_get_devname(dev, &dn); |
1371 | if (r < 0) | |
9670d583 LP |
1372 | return 0; |
1373 | ||
1374 | while ((s = hashmap_get(m->swaps_by_devnode, dn))) { | |
1375 | int q; | |
1376 | ||
1377 | q = swap_set_devnode(s, NULL); | |
1378 | if (q < 0) | |
1379 | r = q; | |
1380 | } | |
1381 | ||
1382 | return r; | |
1383 | } | |
1384 | ||
fdf20a31 | 1385 | static void swap_reset_failed(Unit *u) { |
5632e374 LP |
1386 | Swap *s = SWAP(u); |
1387 | ||
1388 | assert(s); | |
1389 | ||
fdf20a31 | 1390 | if (s->state == SWAP_FAILED) |
5632e374 | 1391 | swap_set_state(s, SWAP_DEAD); |
e04aad61 | 1392 | |
e1770af8 | 1393 | s->result = SWAP_SUCCESS; |
5632e374 LP |
1394 | } |
1395 | ||
718db961 | 1396 | static int swap_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 1397 | return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error); |
8a0867d6 LP |
1398 | } |
1399 | ||
7a7821c8 | 1400 | static int swap_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1401 | Swap *s = SWAP(u); |
7a7821c8 | 1402 | usec_t t; |
68db7a3b ZJS |
1403 | int r; |
1404 | ||
1405 | if (!s->timer_event_source) | |
1406 | return 0; | |
1407 | ||
7a7821c8 | 1408 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
1409 | if (r < 0) |
1410 | return r; | |
7a7821c8 LP |
1411 | if (t == USEC_INFINITY) |
1412 | return 0; | |
68db7a3b | 1413 | |
7a7821c8 | 1414 | *timeout = t; |
68db7a3b ZJS |
1415 | return 1; |
1416 | } | |
1417 | ||
1c2e9646 | 1418 | static bool swap_supported(void) { |
0faacd47 LP |
1419 | static int supported = -1; |
1420 | ||
1421 | /* If swap support is not available in the kernel, or we are | |
1422 | * running in a container we don't support swap units, and any | |
1423 | * attempts to starting one should fail immediately. */ | |
1424 | ||
1425 | if (supported < 0) | |
1426 | supported = | |
1427 | access("/proc/swaps", F_OK) >= 0 && | |
75f86906 | 1428 | detect_container() <= 0; |
0faacd47 LP |
1429 | |
1430 | return supported; | |
1431 | } | |
1432 | ||
291d565a LP |
1433 | static int swap_control_pid(Unit *u) { |
1434 | Swap *s = SWAP(u); | |
1435 | ||
1436 | assert(s); | |
1437 | ||
1438 | return s->control_pid; | |
1439 | } | |
1440 | ||
e04aad61 LP |
1441 | static const char* const swap_exec_command_table[_SWAP_EXEC_COMMAND_MAX] = { |
1442 | [SWAP_EXEC_ACTIVATE] = "ExecActivate", | |
1443 | [SWAP_EXEC_DEACTIVATE] = "ExecDeactivate", | |
1444 | }; | |
1445 | ||
1446 | DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand); | |
1447 | ||
e1770af8 LP |
1448 | static const char* const swap_result_table[_SWAP_RESULT_MAX] = { |
1449 | [SWAP_SUCCESS] = "success", | |
1450 | [SWAP_FAILURE_RESOURCES] = "resources", | |
1451 | [SWAP_FAILURE_TIMEOUT] = "timeout", | |
1452 | [SWAP_FAILURE_EXIT_CODE] = "exit-code", | |
1453 | [SWAP_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1454 | [SWAP_FAILURE_CORE_DUMP] = "core-dump", |
1455 | [SWAP_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
e1770af8 LP |
1456 | }; |
1457 | ||
1458 | DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult); | |
1459 | ||
07b0b134 | 1460 | const UnitVTable swap_vtable = { |
7d17cfbc | 1461 | .object_size = sizeof(Swap), |
718db961 LP |
1462 | .exec_context_offset = offsetof(Swap, exec_context), |
1463 | .cgroup_context_offset = offsetof(Swap, cgroup_context), | |
1464 | .kill_context_offset = offsetof(Swap, kill_context), | |
613b411c | 1465 | .exec_runtime_offset = offsetof(Swap, exec_runtime), |
29206d46 | 1466 | .dynamic_creds_offset = offsetof(Swap, dynamic_creds), |
3ef63c31 | 1467 | |
f975e971 LP |
1468 | .sections = |
1469 | "Unit\0" | |
1470 | "Swap\0" | |
1471 | "Install\0", | |
4ad49000 | 1472 | .private_section = "Swap", |
71645aca | 1473 | |
4e85aff4 | 1474 | .init = swap_init, |
07b0b134 | 1475 | .load = swap_load, |
6e620bec | 1476 | .done = swap_done, |
07b0b134 ML |
1477 | |
1478 | .coldplug = swap_coldplug, | |
1479 | ||
1480 | .dump = swap_dump, | |
1481 | ||
1482 | .start = swap_start, | |
1483 | .stop = swap_stop, | |
1484 | ||
8a0867d6 LP |
1485 | .kill = swap_kill, |
1486 | ||
68db7a3b ZJS |
1487 | .get_timeout = swap_get_timeout, |
1488 | ||
07b0b134 ML |
1489 | .serialize = swap_serialize, |
1490 | .deserialize_item = swap_deserialize_item, | |
1491 | ||
1492 | .active_state = swap_active_state, | |
1493 | .sub_state_to_string = swap_sub_state_to_string, | |
1494 | ||
f2f725e5 | 1495 | .may_gc = swap_may_gc, |
07b0b134 | 1496 | |
e04aad61 | 1497 | .sigchld_event = swap_sigchld_event, |
e04aad61 LP |
1498 | |
1499 | .reset_failed = swap_reset_failed, | |
1500 | ||
291d565a LP |
1501 | .control_pid = swap_control_pid, |
1502 | ||
718db961 | 1503 | .bus_vtable = bus_swap_vtable, |
74c964d3 LP |
1504 | .bus_set_property = bus_swap_set_property, |
1505 | .bus_commit_properties = bus_swap_commit_properties, | |
07b0b134 | 1506 | |
e04aad61 | 1507 | .following = swap_following, |
6210e7fc | 1508 | .following_set = swap_following_set, |
5632e374 | 1509 | |
6e620bec | 1510 | .enumerate = swap_enumerate, |
c6918296 | 1511 | .shutdown = swap_shutdown, |
0faacd47 | 1512 | .supported = swap_supported, |
c6918296 MS |
1513 | |
1514 | .status_message_formats = { | |
1515 | .starting_stopping = { | |
1516 | [0] = "Activating swap %s...", | |
1517 | [1] = "Deactivating swap %s...", | |
1518 | }, | |
1519 | .finished_start_job = { | |
1520 | [JOB_DONE] = "Activated swap %s.", | |
1521 | [JOB_FAILED] = "Failed to activate swap %s.", | |
c6918296 MS |
1522 | [JOB_TIMEOUT] = "Timed out activating swap %s.", |
1523 | }, | |
1524 | .finished_stop_job = { | |
1525 | [JOB_DONE] = "Deactivated swap %s.", | |
1526 | [JOB_FAILED] = "Failed deactivating swap %s.", | |
1527 | [JOB_TIMEOUT] = "Timed out deactivating swap %s.", | |
1528 | }, | |
1529 | }, | |
07b0b134 | 1530 | }; |