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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" |
6fcbec6f | 12 | #include "dbus-unit.h" |
4366e598 YW |
13 | #include "device-private.h" |
14 | #include "device-util.h" | |
57b7a260 | 15 | #include "device.h" |
4f5dd394 | 16 | #include "escape.h" |
9a57c629 | 17 | #include "exit-status.h" |
3ffd4af2 | 18 | #include "fd-util.h" |
f97b34a6 | 19 | #include "format-util.h" |
4f5dd394 | 20 | #include "fstab-util.h" |
6bedfcbb | 21 | #include "parse-util.h" |
9eb977db | 22 | #include "path-util.h" |
7b3e062c | 23 | #include "process-util.h" |
d68c645b | 24 | #include "serialize.h" |
4f5dd394 | 25 | #include "special.h" |
8b43440b | 26 | #include "string-table.h" |
07630cea | 27 | #include "string-util.h" |
3ffd4af2 | 28 | #include "swap.h" |
4f5dd394 LP |
29 | #include "unit-name.h" |
30 | #include "unit.h" | |
31 | #include "virt.h" | |
07b0b134 ML |
32 | |
33 | static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = { | |
34 | [SWAP_DEAD] = UNIT_INACTIVE, | |
e04aad61 | 35 | [SWAP_ACTIVATING] = UNIT_ACTIVATING, |
5bcb0f2b | 36 | [SWAP_ACTIVATING_DONE] = UNIT_ACTIVE, |
07b0b134 | 37 | [SWAP_ACTIVE] = UNIT_ACTIVE, |
e04aad61 | 38 | [SWAP_DEACTIVATING] = UNIT_DEACTIVATING, |
e04aad61 LP |
39 | [SWAP_DEACTIVATING_SIGTERM] = UNIT_DEACTIVATING, |
40 | [SWAP_DEACTIVATING_SIGKILL] = UNIT_DEACTIVATING, | |
fdf20a31 | 41 | [SWAP_FAILED] = UNIT_FAILED |
07b0b134 ML |
42 | }; |
43 | ||
718db961 LP |
44 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata); |
45 | static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata); | |
46 | ||
dedf3719 LP |
47 | static bool SWAP_STATE_WITH_PROCESS(SwapState state) { |
48 | return IN_SET(state, | |
49 | SWAP_ACTIVATING, | |
50 | SWAP_ACTIVATING_DONE, | |
51 | SWAP_DEACTIVATING, | |
52 | SWAP_DEACTIVATING_SIGTERM, | |
53 | SWAP_DEACTIVATING_SIGKILL); | |
54 | } | |
55 | ||
e04aad61 | 56 | static void swap_unset_proc_swaps(Swap *s) { |
9670d583 LP |
57 | assert(s); |
58 | ||
59 | if (!s->from_proc_swaps) | |
60 | return; | |
61 | ||
a1e58e8e | 62 | s->parameters_proc_swaps.what = mfree(s->parameters_proc_swaps.what); |
9670d583 LP |
63 | |
64 | s->from_proc_swaps = false; | |
65 | } | |
66 | ||
67 | static int swap_set_devnode(Swap *s, const char *devnode) { | |
df326b84 | 68 | Hashmap *swaps; |
5bcb0f2b | 69 | Swap *first; |
9670d583 | 70 | int r; |
e04aad61 LP |
71 | |
72 | assert(s); | |
73 | ||
548f6937 | 74 | r = hashmap_ensure_allocated(&UNIT(s)->manager->swaps_by_devnode, &path_hash_ops); |
9670d583 LP |
75 | if (r < 0) |
76 | return r; | |
e04aad61 | 77 | |
9670d583 | 78 | swaps = UNIT(s)->manager->swaps_by_devnode; |
e04aad61 | 79 | |
9670d583 LP |
80 | if (s->devnode) { |
81 | first = hashmap_get(swaps, s->devnode); | |
e04aad61 | 82 | |
9670d583 LP |
83 | LIST_REMOVE(same_devnode, first, s); |
84 | if (first) | |
85 | hashmap_replace(swaps, first->devnode, first); | |
86 | else | |
87 | hashmap_remove(swaps, s->devnode); | |
5bcb0f2b | 88 | |
a1e58e8e | 89 | s->devnode = mfree(s->devnode); |
9670d583 LP |
90 | } |
91 | ||
92 | if (devnode) { | |
93 | s->devnode = strdup(devnode); | |
94 | if (!s->devnode) | |
95 | return -ENOMEM; | |
96 | ||
97 | first = hashmap_get(swaps, s->devnode); | |
98 | LIST_PREPEND(same_devnode, first, s); | |
99 | ||
100 | return hashmap_replace(swaps, first->devnode, first); | |
101 | } | |
102 | ||
103 | return 0; | |
e04aad61 LP |
104 | } |
105 | ||
f6cebb3b | 106 | static void swap_init(Unit *u) { |
6e620bec LP |
107 | Swap *s = SWAP(u); |
108 | ||
109 | assert(s); | |
1124fe6f | 110 | assert(UNIT(s)->load_state == UNIT_STUB); |
6e620bec | 111 | |
1f19a534 | 112 | s->timeout_usec = u->manager->default_timeout_start_usec; |
e04aad61 | 113 | |
ac155bb8 MS |
114 | s->exec_context.std_output = u->manager->default_std_output; |
115 | s->exec_context.std_error = u->manager->default_std_error; | |
085afe36 | 116 | |
6b1dc2bd | 117 | s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1; |
e04aad61 | 118 | |
e1770af8 | 119 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; |
c8f4d764 | 120 | |
5bcb0f2b | 121 | u->ignore_on_isolate = true; |
e04aad61 LP |
122 | } |
123 | ||
124 | static void swap_unwatch_control_pid(Swap *s) { | |
125 | assert(s); | |
126 | ||
127 | if (s->control_pid <= 0) | |
128 | return; | |
129 | ||
130 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
131 | s->control_pid = 0; | |
6e620bec LP |
132 | } |
133 | ||
4e85aff4 LP |
134 | static void swap_done(Unit *u) { |
135 | Swap *s = SWAP(u); | |
07b0b134 | 136 | |
4e85aff4 | 137 | assert(s); |
07b0b134 | 138 | |
e04aad61 | 139 | swap_unset_proc_swaps(s); |
9670d583 | 140 | swap_set_devnode(s, NULL); |
e04aad61 | 141 | |
a1e58e8e LP |
142 | s->what = mfree(s->what); |
143 | s->parameters_fragment.what = mfree(s->parameters_fragment.what); | |
144 | s->parameters_fragment.options = mfree(s->parameters_fragment.options); | |
86b23b07 | 145 | |
e8a565cb | 146 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, false); |
e04aad61 LP |
147 | exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); |
148 | s->control_command = NULL; | |
149 | ||
29206d46 LP |
150 | dynamic_creds_unref(&s->dynamic_creds); |
151 | ||
e04aad61 LP |
152 | swap_unwatch_control_pid(s); |
153 | ||
718db961 LP |
154 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
155 | } | |
156 | ||
36c16a7c | 157 | static int swap_arm_timer(Swap *s, usec_t usec) { |
718db961 LP |
158 | int r; |
159 | ||
160 | assert(s); | |
161 | ||
718db961 | 162 | if (s->timer_event_source) { |
36c16a7c | 163 | r = sd_event_source_set_time(s->timer_event_source, usec); |
718db961 LP |
164 | if (r < 0) |
165 | return r; | |
166 | ||
167 | return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT); | |
168 | } | |
169 | ||
36c16a7c LP |
170 | if (usec == USEC_INFINITY) |
171 | return 0; | |
172 | ||
7dfbe2e3 | 173 | r = sd_event_add_time( |
6a0f1f6d LP |
174 | UNIT(s)->manager->event, |
175 | &s->timer_event_source, | |
176 | CLOCK_MONOTONIC, | |
36c16a7c | 177 | usec, 0, |
6a0f1f6d | 178 | swap_dispatch_timer, s); |
7dfbe2e3 TG |
179 | if (r < 0) |
180 | return r; | |
181 | ||
182 | (void) sd_event_source_set_description(s->timer_event_source, "swap-timer"); | |
183 | ||
184 | return 0; | |
07b0b134 ML |
185 | } |
186 | ||
eef85c4a | 187 | static int swap_add_device_dependencies(Swap *s) { |
173a8d04 LP |
188 | assert(s); |
189 | ||
190 | if (!s->what) | |
191 | return 0; | |
192 | ||
f10af76d LP |
193 | if (!s->from_fragment) |
194 | return 0; | |
195 | ||
cfcfd4ae | 196 | if (is_device_path(s->what)) |
eef85c4a | 197 | return unit_add_node_dependency(UNIT(s), s->what, MANAGER_IS_SYSTEM(UNIT(s)->manager), UNIT_BINDS_TO, UNIT_DEPENDENCY_FILE); |
cfcfd4ae LP |
198 | else |
199 | /* File based swap devices need to be ordered after | |
2b93b027 | 200 | * systemd-remount-fs.service, since they might need a |
cfcfd4ae | 201 | * writable file system. */ |
35d8c19a | 202 | return unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_REMOUNT_FS_SERVICE, true, UNIT_DEPENDENCY_FILE); |
173a8d04 LP |
203 | } |
204 | ||
2edd4434 | 205 | static int swap_add_default_dependencies(Swap *s) { |
8bf23dc7 FB |
206 | int r; |
207 | ||
2edd4434 LP |
208 | assert(s); |
209 | ||
4c9ea260 LP |
210 | if (!UNIT(s)->default_dependencies) |
211 | return 0; | |
212 | ||
463d0d15 | 213 | if (!MANAGER_IS_SYSTEM(UNIT(s)->manager)) |
6b1dc2bd | 214 | return 0; |
2edd4434 | 215 | |
75f86906 | 216 | if (detect_container() > 0) |
c0387ebf LP |
217 | return 0; |
218 | ||
8bf23dc7 FB |
219 | /* swap units generated for the swap dev links are missing the |
220 | * ordering dep against the swap target. */ | |
35d8c19a | 221 | r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SWAP_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
8bf23dc7 FB |
222 | if (r < 0) |
223 | return r; | |
224 | ||
5a724170 | 225 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, true, UNIT_DEPENDENCY_DEFAULT); |
2edd4434 LP |
226 | } |
227 | ||
4e85aff4 | 228 | static int swap_verify(Swap *s) { |
7fd1b19b | 229 | _cleanup_free_ char *e = NULL; |
7410616c | 230 | int r; |
4e85aff4 | 231 | |
1124fe6f | 232 | if (UNIT(s)->load_state != UNIT_LOADED) |
5bcb0f2b | 233 | return 0; |
4e85aff4 | 234 | |
7410616c LP |
235 | r = unit_name_from_path(s->what, ".swap", &e); |
236 | if (r < 0) | |
f2341e0a | 237 | return log_unit_error_errno(UNIT(s), r, "Failed to generate unit name from path: %m"); |
4e85aff4 | 238 | |
7410616c | 239 | if (!unit_has_name(UNIT(s), e)) { |
f2341e0a | 240 | log_unit_error(UNIT(s), "Value of What= and unit name do not match, not loading."); |
6f40aa45 | 241 | return -ENOEXEC; |
4e85aff4 LP |
242 | } |
243 | ||
4819ff03 | 244 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { |
f2341e0a | 245 | log_unit_error(UNIT(s), "Unit has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load."); |
6f40aa45 | 246 | return -ENOEXEC; |
e04aad61 LP |
247 | } |
248 | ||
4e85aff4 LP |
249 | return 0; |
250 | } | |
251 | ||
9670d583 | 252 | static int swap_load_devnode(Swap *s) { |
4366e598 | 253 | _cleanup_(sd_device_unrefp) sd_device *d = NULL; |
9670d583 LP |
254 | struct stat st; |
255 | const char *p; | |
e5ca27b7 | 256 | int r; |
9670d583 LP |
257 | |
258 | assert(s); | |
259 | ||
260 | if (stat(s->what, &st) < 0 || !S_ISBLK(st.st_mode)) | |
261 | return 0; | |
262 | ||
4366e598 | 263 | r = device_new_from_stat_rdev(&d, &st); |
e5ca27b7 LP |
264 | if (r < 0) { |
265 | log_unit_full(UNIT(s), r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, | |
4366e598 | 266 | "Failed to allocate device for swap %s: %m", s->what); |
9670d583 | 267 | return 0; |
e5ca27b7 | 268 | } |
9670d583 | 269 | |
4366e598 | 270 | if (sd_device_get_devname(d, &p) < 0) |
9670d583 LP |
271 | return 0; |
272 | ||
273 | return swap_set_devnode(s, p); | |
274 | } | |
275 | ||
07b0b134 ML |
276 | static int swap_load(Unit *u) { |
277 | int r; | |
278 | Swap *s = SWAP(u); | |
279 | ||
280 | assert(s); | |
ac155bb8 | 281 | assert(u->load_state == UNIT_STUB); |
07b0b134 ML |
282 | |
283 | /* Load a .swap file */ | |
3000f850 YW |
284 | if (SWAP(u)->from_proc_swaps) |
285 | r = unit_load_fragment_and_dropin_optional(u); | |
286 | else | |
287 | r = unit_load_fragment_and_dropin(u); | |
646134dc | 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 | 310 | |
858d36c1 | 311 | path_simplify(s->what, false); |
07b0b134 | 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 | |
eef85c4a | 319 | r = unit_require_mounts_for(UNIT(s), s->what, UNIT_DEPENDENCY_IMPLICIT); |
646134dc | 320 | if (r < 0) |
07b0b134 ML |
321 | return r; |
322 | ||
eef85c4a | 323 | r = swap_add_device_dependencies(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 && |
baaa35ad ZJS |
376 | !path_equal(SWAP(u)->parameters_proc_swaps.what, what_proc_swaps)) |
377 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
378 | "Swap %s appeared twice with different device paths %s and %s", | |
379 | e, SWAP(u)->parameters_proc_swaps.what, what_proc_swaps); | |
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) { |
4366e598 YW |
430 | _cleanup_(sd_device_unrefp) sd_device *d = NULL; |
431 | const char *dn, *devlink; | |
432 | struct stat st, st_link; | |
5bcb0f2b | 433 | int r; |
e04aad61 LP |
434 | |
435 | assert(m); | |
436 | ||
628c89cc | 437 | r = swap_setup_unit(m, device, device, prio, set_flags); |
5bcb0f2b LP |
438 | if (r < 0) |
439 | return r; | |
e04aad61 | 440 | |
5bcb0f2b LP |
441 | /* If this is a block device, then let's add duplicates for |
442 | * all other names of this block device */ | |
443 | if (stat(device, &st) < 0 || !S_ISBLK(st.st_mode)) | |
444 | return 0; | |
e04aad61 | 445 | |
4366e598 | 446 | r = device_new_from_stat_rdev(&d, &st); |
e5ca27b7 LP |
447 | if (r < 0) { |
448 | log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, | |
4366e598 | 449 | "Failed to allocate device for swap %s: %m", device); |
5bcb0f2b | 450 | return 0; |
e5ca27b7 | 451 | } |
e04aad61 | 452 | |
5bcb0f2b | 453 | /* Add the main device node */ |
4366e598 | 454 | if (sd_device_get_devname(d, &dn) >= 0 && !streq(dn, device)) |
628c89cc | 455 | swap_setup_unit(m, dn, device, prio, set_flags); |
e04aad61 | 456 | |
5bcb0f2b | 457 | /* Add additional units for all symlinks */ |
4366e598 | 458 | FOREACH_DEVICE_DEVLINK(d, devlink) { |
e04aad61 | 459 | |
5bcb0f2b | 460 | /* Don't bother with the /dev/block links */ |
4366e598 | 461 | if (streq(devlink, device)) |
5bcb0f2b | 462 | continue; |
e04aad61 | 463 | |
4366e598 | 464 | if (path_startswith(devlink, "/dev/block/")) |
5bcb0f2b | 465 | continue; |
e04aad61 | 466 | |
4366e598 YW |
467 | if (stat(devlink, &st_link) >= 0 && |
468 | (!S_ISBLK(st_link.st_mode) || | |
469 | st_link.st_rdev != st.st_rdev)) | |
470 | continue; | |
e04aad61 | 471 | |
4366e598 | 472 | swap_setup_unit(m, devlink, device, prio, set_flags); |
e04aad61 LP |
473 | } |
474 | ||
e04aad61 LP |
475 | return r; |
476 | } | |
477 | ||
07b0b134 ML |
478 | static void swap_set_state(Swap *s, SwapState state) { |
479 | SwapState old_state; | |
37cf8fee | 480 | Swap *other; |
e04aad61 | 481 | |
07b0b134 ML |
482 | assert(s); |
483 | ||
6fcbec6f LP |
484 | if (s->state != state) |
485 | bus_unit_send_pending_change_signal(UNIT(s), false); | |
486 | ||
07b0b134 ML |
487 | old_state = s->state; |
488 | s->state = state; | |
489 | ||
dedf3719 | 490 | if (!SWAP_STATE_WITH_PROCESS(state)) { |
718db961 | 491 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
e04aad61 LP |
492 | swap_unwatch_control_pid(s); |
493 | s->control_command = NULL; | |
494 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
495 | } | |
496 | ||
07b0b134 | 497 | if (state != old_state) |
f2341e0a | 498 | log_unit_debug(UNIT(s), "Changed %s -> %s", swap_state_to_string(old_state), swap_state_to_string(state)); |
07b0b134 | 499 | |
2ad2e41a | 500 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], 0); |
37cf8fee LP |
501 | |
502 | /* If there other units for the same device node have a job | |
503 | queued it might be worth checking again if it is runnable | |
504 | now. This is necessary, since swap_start() refuses | |
505 | operation with EAGAIN if there's already another job for | |
506 | the same device node queued. */ | |
507 | LIST_FOREACH_OTHERS(same_devnode, other, s) | |
508 | if (UNIT(other)->job) | |
509 | job_add_to_run_queue(UNIT(other)->job); | |
07b0b134 ML |
510 | } |
511 | ||
be847e82 | 512 | static int swap_coldplug(Unit *u) { |
07b0b134 ML |
513 | Swap *s = SWAP(u); |
514 | SwapState new_state = SWAP_DEAD; | |
e04aad61 | 515 | int r; |
07b0b134 ML |
516 | |
517 | assert(s); | |
518 | assert(s->state == SWAP_DEAD); | |
519 | ||
520 | if (s->deserialized_state != s->state) | |
521 | new_state = s->deserialized_state; | |
4e85aff4 | 522 | else if (s->from_proc_swaps) |
07b0b134 ML |
523 | new_state = SWAP_ACTIVE; |
524 | ||
5bcb0f2b LP |
525 | if (new_state == s->state) |
526 | return 0; | |
e04aad61 | 527 | |
c386f588 LP |
528 | if (s->control_pid > 0 && |
529 | pid_is_unwaited(s->control_pid) && | |
dedf3719 | 530 | SWAP_STATE_WITH_PROCESS(new_state)) { |
e04aad61 | 531 | |
5bcb0f2b LP |
532 | r = unit_watch_pid(UNIT(s), s->control_pid); |
533 | if (r < 0) | |
534 | return r; | |
e04aad61 | 535 | |
36c16a7c | 536 | r = swap_arm_timer(s, usec_add(u->state_change_timestamp.monotonic, s->timeout_usec)); |
5bcb0f2b LP |
537 | if (r < 0) |
538 | return r; | |
e04aad61 | 539 | } |
07b0b134 | 540 | |
e8a565cb | 541 | if (!IN_SET(new_state, SWAP_DEAD, SWAP_FAILED)) { |
29206d46 | 542 | (void) unit_setup_dynamic_creds(u); |
e8a565cb YW |
543 | (void) unit_setup_exec_runtime(u); |
544 | } | |
29206d46 | 545 | |
5bcb0f2b | 546 | swap_set_state(s, new_state); |
07b0b134 ML |
547 | return 0; |
548 | } | |
549 | ||
550 | static void swap_dump(Unit *u, FILE *f, const char *prefix) { | |
f2e18ef1 | 551 | char buf[FORMAT_TIMESPAN_MAX]; |
07b0b134 | 552 | Swap *s = SWAP(u); |
4e85aff4 | 553 | SwapParameters *p; |
07b0b134 ML |
554 | |
555 | assert(s); | |
4e85aff4 LP |
556 | assert(f); |
557 | ||
558 | if (s->from_proc_swaps) | |
559 | p = &s->parameters_proc_swaps; | |
560 | else if (s->from_fragment) | |
561 | p = &s->parameters_fragment; | |
b6bfc7bb LP |
562 | else |
563 | p = NULL; | |
07b0b134 ML |
564 | |
565 | fprintf(f, | |
4e85aff4 | 566 | "%sSwap State: %s\n" |
e1770af8 | 567 | "%sResult: %s\n" |
07b0b134 | 568 | "%sWhat: %s\n" |
4e85aff4 LP |
569 | "%sFrom /proc/swaps: %s\n" |
570 | "%sFrom fragment: %s\n", | |
07b0b134 | 571 | prefix, swap_state_to_string(s->state), |
e1770af8 | 572 | prefix, swap_result_to_string(s->result), |
07b0b134 | 573 | prefix, s->what, |
4e85aff4 LP |
574 | prefix, yes_no(s->from_proc_swaps), |
575 | prefix, yes_no(s->from_fragment)); | |
e04aad61 | 576 | |
9670d583 LP |
577 | if (s->devnode) |
578 | fprintf(f, "%sDevice Node: %s\n", prefix, s->devnode); | |
579 | ||
b6bfc7bb LP |
580 | if (p) |
581 | fprintf(f, | |
582 | "%sPriority: %i\n" | |
47cb901e | 583 | "%sOptions: %s\n", |
b6bfc7bb | 584 | prefix, p->priority, |
47cb901e | 585 | prefix, strempty(p->options)); |
b6bfc7bb | 586 | |
9bd0e1b8 YW |
587 | fprintf(f, |
588 | "%sTimeoutSec: %s\n", | |
589 | prefix, format_timespan(buf, sizeof(buf), s->timeout_usec, USEC_PER_SEC)); | |
590 | ||
e04aad61 LP |
591 | if (s->control_pid > 0) |
592 | fprintf(f, | |
de0671ee ZJS |
593 | "%sControl PID: "PID_FMT"\n", |
594 | prefix, s->control_pid); | |
e04aad61 LP |
595 | |
596 | exec_context_dump(&s->exec_context, f, prefix); | |
4819ff03 | 597 | kill_context_dump(&s->kill_context, f, prefix); |
18f573aa | 598 | cgroup_context_dump(&s->cgroup_context, f, prefix); |
e04aad61 LP |
599 | } |
600 | ||
601 | static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) { | |
3c7416b6 | 602 | |
b9c04eaf | 603 | _cleanup_(exec_params_clear) ExecParameters exec_params = { |
1703fa41 | 604 | .flags = EXEC_APPLY_SANDBOXING|EXEC_APPLY_CHROOT|EXEC_APPLY_TTY_STDIN, |
c39f1ce2 LP |
605 | .stdin_fd = -1, |
606 | .stdout_fd = -1, | |
607 | .stderr_fd = -1, | |
5686391b | 608 | .exec_fd = -1, |
9fa95f85 | 609 | }; |
3c7416b6 LP |
610 | pid_t pid; |
611 | int r; | |
e04aad61 LP |
612 | |
613 | assert(s); | |
614 | assert(c); | |
615 | assert(_pid); | |
616 | ||
3c7416b6 | 617 | r = unit_prepare_exec(UNIT(s)); |
29206d46 | 618 | if (r < 0) |
3c7416b6 | 619 | return r; |
29206d46 | 620 | |
36c16a7c | 621 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 622 | if (r < 0) |
e04aad61 LP |
623 | goto fail; |
624 | ||
1ad6e8b3 LP |
625 | r = unit_set_exec_params(UNIT(s), &exec_params); |
626 | if (r < 0) | |
627 | goto fail; | |
9fa95f85 | 628 | |
f2341e0a LP |
629 | r = exec_spawn(UNIT(s), |
630 | c, | |
646134dc | 631 | &s->exec_context, |
9fa95f85 | 632 | &exec_params, |
613b411c | 633 | s->exec_runtime, |
29206d46 | 634 | &s->dynamic_creds, |
646134dc ZJS |
635 | &pid); |
636 | if (r < 0) | |
e04aad61 LP |
637 | goto fail; |
638 | ||
646134dc ZJS |
639 | r = unit_watch_pid(UNIT(s), pid); |
640 | if (r < 0) | |
e04aad61 LP |
641 | /* FIXME: we need to do something here */ |
642 | goto fail; | |
643 | ||
644 | *_pid = pid; | |
645 | ||
646 | return 0; | |
647 | ||
648 | fail: | |
718db961 | 649 | s->timer_event_source = sd_event_source_unref(s->timer_event_source); |
3536f49e | 650 | |
e04aad61 | 651 | return r; |
07b0b134 ML |
652 | } |
653 | ||
e1770af8 | 654 | static void swap_enter_dead(Swap *s, SwapResult f) { |
07b0b134 ML |
655 | assert(s); |
656 | ||
a0fef983 | 657 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 658 | s->result = f; |
e04aad61 | 659 | |
aac99f30 | 660 | unit_log_result(UNIT(s), s->result == SWAP_SUCCESS, swap_result_to_string(s->result)); |
29206d46 LP |
661 | swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD); |
662 | ||
e8a565cb | 663 | s->exec_runtime = exec_runtime_unref(s->exec_runtime, true); |
613b411c | 664 | |
3536f49e | 665 | exec_context_destroy_runtime_directory(&s->exec_context, UNIT(s)->manager->prefix[EXEC_DIRECTORY_RUNTIME]); |
e66cf1a3 | 666 | |
00d9ef85 LP |
667 | unit_unref_uid_gid(UNIT(s), true); |
668 | ||
29206d46 | 669 | dynamic_creds_destroy(&s->dynamic_creds); |
07b0b134 ML |
670 | } |
671 | ||
e1770af8 | 672 | static void swap_enter_active(Swap *s, SwapResult f) { |
e04aad61 LP |
673 | assert(s); |
674 | ||
a0fef983 | 675 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 676 | s->result = f; |
e04aad61 LP |
677 | |
678 | swap_set_state(s, SWAP_ACTIVE); | |
679 | } | |
680 | ||
50864457 LP |
681 | static void swap_enter_dead_or_active(Swap *s, SwapResult f) { |
682 | assert(s); | |
683 | ||
684 | if (s->from_proc_swaps) | |
685 | swap_enter_active(s, f); | |
686 | else | |
687 | swap_enter_dead(s, f); | |
688 | } | |
689 | ||
e1770af8 | 690 | static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) { |
07b0b134 | 691 | int r; |
d31ae548 | 692 | KillOperation kop; |
07b0b134 ML |
693 | |
694 | assert(s); | |
e04aad61 | 695 | |
a0fef983 | 696 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 697 | s->result = f; |
e04aad61 | 698 | |
50864457 | 699 | if (state == SWAP_DEACTIVATING_SIGTERM) |
d31ae548 FB |
700 | kop = KILL_TERMINATE; |
701 | else | |
702 | kop = KILL_KILL; | |
703 | ||
704 | r = unit_kill_context(UNIT(s), &s->kill_context, kop, -1, s->control_pid, false); | |
cd2086fe LP |
705 | if (r < 0) |
706 | goto fail; | |
e04aad61 | 707 | |
cd2086fe | 708 | if (r > 0) { |
36c16a7c | 709 | r = swap_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_usec)); |
646134dc | 710 | if (r < 0) |
e04aad61 LP |
711 | goto fail; |
712 | ||
713 | swap_set_state(s, state); | |
50864457 | 714 | } else if (state == SWAP_DEACTIVATING_SIGTERM && s->kill_context.send_sigkill) |
ac84d1fb LP |
715 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_SUCCESS); |
716 | else | |
50864457 | 717 | swap_enter_dead_or_active(s, SWAP_SUCCESS); |
e04aad61 LP |
718 | |
719 | return; | |
720 | ||
721 | fail: | |
f2341e0a | 722 | log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m"); |
50864457 | 723 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
724 | } |
725 | ||
726 | static void swap_enter_activating(Swap *s) { | |
bf1d7ba7 KZ |
727 | _cleanup_free_ char *opts = NULL; |
728 | int r; | |
e04aad61 LP |
729 | |
730 | assert(s); | |
731 | ||
a4634b21 LP |
732 | unit_warn_leftover_processes(UNIT(s)); |
733 | ||
e04aad61 LP |
734 | s->control_command_id = SWAP_EXEC_ACTIVATE; |
735 | s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE; | |
07b0b134 | 736 | |
86b23b07 | 737 | if (s->from_fragment) { |
bf1d7ba7 | 738 | int priority = -1; |
47cb901e | 739 | |
bf1d7ba7 KZ |
740 | r = fstab_find_pri(s->parameters_fragment.options, &priority); |
741 | if (r < 0) | |
742 | log_warning_errno(r, "Failed to parse swap priority \"%s\", ignoring: %m", s->parameters_fragment.options); | |
743 | else if (r == 1 && s->parameters_fragment.priority >= 0) | |
744 | log_warning("Duplicate swap priority configuration by Priority and Options fields."); | |
745 | ||
746 | if (r <= 0 && s->parameters_fragment.priority >= 0) { | |
747 | if (s->parameters_fragment.options) | |
748 | r = asprintf(&opts, "%s,pri=%i", s->parameters_fragment.options, s->parameters_fragment.priority); | |
749 | else | |
750 | r = asprintf(&opts, "pri=%i", s->parameters_fragment.priority); | |
e64d5235 | 751 | if (r < 0) |
bf1d7ba7 | 752 | goto fail; |
e64d5235 | 753 | } |
86b23b07 JS |
754 | } |
755 | ||
756 | r = exec_command_set(s->control_command, "/sbin/swapon", NULL); | |
757 | if (r < 0) | |
758 | goto fail; | |
4e85aff4 | 759 | |
bf1d7ba7 KZ |
760 | if (s->parameters_fragment.options || opts) { |
761 | r = exec_command_append(s->control_command, "-o", | |
762 | opts ? : s->parameters_fragment.options, NULL); | |
86b23b07 JS |
763 | if (r < 0) |
764 | goto fail; | |
765 | } | |
e04aad61 | 766 | |
86b23b07 | 767 | r = exec_command_append(s->control_command, s->what, NULL); |
e04aad61 LP |
768 | if (r < 0) |
769 | goto fail; | |
770 | ||
771 | swap_unwatch_control_pid(s); | |
772 | ||
646134dc ZJS |
773 | r = swap_spawn(s, s->control_command, &s->control_pid); |
774 | if (r < 0) | |
e04aad61 LP |
775 | goto fail; |
776 | ||
777 | swap_set_state(s, SWAP_ACTIVATING); | |
778 | ||
779 | return; | |
780 | ||
781 | fail: | |
f2341e0a | 782 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapon' task: %m"); |
50864457 | 783 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
784 | } |
785 | ||
e1770af8 | 786 | static void swap_enter_deactivating(Swap *s) { |
e04aad61 LP |
787 | int r; |
788 | ||
789 | assert(s); | |
790 | ||
e04aad61 LP |
791 | s->control_command_id = SWAP_EXEC_DEACTIVATE; |
792 | s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE; | |
793 | ||
646134dc | 794 | r = exec_command_set(s->control_command, |
e04aad61 LP |
795 | "/sbin/swapoff", |
796 | s->what, | |
646134dc ZJS |
797 | NULL); |
798 | if (r < 0) | |
e04aad61 LP |
799 | goto fail; |
800 | ||
801 | swap_unwatch_control_pid(s); | |
802 | ||
646134dc ZJS |
803 | r = swap_spawn(s, s->control_command, &s->control_pid); |
804 | if (r < 0) | |
e04aad61 LP |
805 | goto fail; |
806 | ||
807 | swap_set_state(s, SWAP_DEACTIVATING); | |
808 | ||
809 | return; | |
810 | ||
811 | fail: | |
f2341e0a | 812 | log_unit_warning_errno(UNIT(s), r, "Failed to run 'swapoff' task: %m"); |
50864457 | 813 | swap_enter_dead_or_active(s, SWAP_FAILURE_RESOURCES); |
e04aad61 LP |
814 | } |
815 | ||
31135818 LP |
816 | static void swap_cycle_clear(Swap *s) { |
817 | assert(s); | |
818 | ||
819 | s->result = SWAP_SUCCESS; | |
820 | exec_command_reset_status_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX); | |
821 | UNIT(s)->reset_accounting = true; | |
822 | } | |
823 | ||
e04aad61 | 824 | static int swap_start(Unit *u) { |
37cf8fee | 825 | Swap *s = SWAP(u), *other; |
07299350 | 826 | int r; |
e04aad61 LP |
827 | |
828 | assert(s); | |
829 | ||
50864457 | 830 | /* We cannot fulfill this request right now, try again later please! */ |
d31ae548 FB |
831 | if (IN_SET(s->state, |
832 | SWAP_DEACTIVATING, | |
833 | SWAP_DEACTIVATING_SIGTERM, | |
50864457 | 834 | SWAP_DEACTIVATING_SIGKILL)) |
e04aad61 LP |
835 | return -EAGAIN; |
836 | ||
50864457 | 837 | /* Already on it! */ |
e04aad61 LP |
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 | ||
31135818 | 863 | swap_cycle_clear(s); |
e04aad61 | 864 | swap_enter_activating(s); |
82a2b6bb | 865 | return 1; |
07b0b134 ML |
866 | } |
867 | ||
868 | static int swap_stop(Unit *u) { | |
869 | Swap *s = SWAP(u); | |
07b0b134 ML |
870 | |
871 | assert(s); | |
872 | ||
50864457 LP |
873 | switch (s->state) { |
874 | ||
875 | case SWAP_DEACTIVATING: | |
876 | case SWAP_DEACTIVATING_SIGTERM: | |
877 | case SWAP_DEACTIVATING_SIGKILL: | |
878 | /* Already on it */ | |
e04aad61 | 879 | return 0; |
07b0b134 | 880 | |
50864457 LP |
881 | case SWAP_ACTIVATING: |
882 | case SWAP_ACTIVATING_DONE: | |
883 | /* There's a control process pending, directly enter kill mode */ | |
884 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_SUCCESS); | |
885 | return 0; | |
07b0b134 | 886 | |
50864457 LP |
887 | case SWAP_ACTIVE: |
888 | if (detect_container() > 0) | |
889 | return -EPERM; | |
a5c3034f | 890 | |
50864457 LP |
891 | swap_enter_deactivating(s); |
892 | return 1; | |
893 | ||
894 | default: | |
895 | assert_not_reached("Unexpected state."); | |
896 | } | |
07b0b134 ML |
897 | } |
898 | ||
899 | static int swap_serialize(Unit *u, FILE *f, FDSet *fds) { | |
900 | Swap *s = SWAP(u); | |
901 | ||
902 | assert(s); | |
903 | assert(f); | |
904 | assert(fds); | |
905 | ||
d68c645b LP |
906 | (void) serialize_item(f, "state", swap_state_to_string(s->state)); |
907 | (void) serialize_item(f, "result", swap_result_to_string(s->result)); | |
e04aad61 LP |
908 | |
909 | if (s->control_pid > 0) | |
d68c645b | 910 | (void) serialize_item_format(f, "control-pid", PID_FMT, s->control_pid); |
e04aad61 LP |
911 | |
912 | if (s->control_command_id >= 0) | |
d68c645b | 913 | (void) serialize_item(f, "control-command", swap_exec_command_to_string(s->control_command_id)); |
07b0b134 ML |
914 | |
915 | return 0; | |
916 | } | |
917 | ||
918 | static int swap_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
919 | Swap *s = SWAP(u); | |
920 | ||
921 | assert(s); | |
922 | assert(fds); | |
923 | ||
924 | if (streq(key, "state")) { | |
925 | SwapState state; | |
926 | ||
646134dc ZJS |
927 | state = swap_state_from_string(value); |
928 | if (state < 0) | |
f2341e0a | 929 | log_unit_debug(u, "Failed to parse state value: %s", value); |
07b0b134 ML |
930 | else |
931 | s->deserialized_state = state; | |
e1770af8 LP |
932 | } else if (streq(key, "result")) { |
933 | SwapResult f; | |
934 | ||
935 | f = swap_result_from_string(value); | |
936 | if (f < 0) | |
f2341e0a | 937 | log_unit_debug(u, "Failed to parse result value: %s", value); |
e1770af8 LP |
938 | else if (f != SWAP_SUCCESS) |
939 | s->result = f; | |
e04aad61 LP |
940 | } else if (streq(key, "control-pid")) { |
941 | pid_t pid; | |
942 | ||
943 | if (parse_pid(value, &pid) < 0) | |
f2341e0a | 944 | log_unit_debug(u, "Failed to parse control-pid value: %s", value); |
e04aad61 LP |
945 | else |
946 | s->control_pid = pid; | |
947 | ||
948 | } else if (streq(key, "control-command")) { | |
949 | SwapExecCommand id; | |
950 | ||
646134dc ZJS |
951 | id = swap_exec_command_from_string(value); |
952 | if (id < 0) | |
f2341e0a | 953 | log_unit_debug(u, "Failed to parse exec-command value: %s", value); |
e04aad61 LP |
954 | else { |
955 | s->control_command_id = id; | |
956 | s->control_command = s->exec_command + id; | |
957 | } | |
07b0b134 | 958 | } else |
f2341e0a | 959 | log_unit_debug(u, "Unknown serialization key: %s", key); |
07b0b134 ML |
960 | |
961 | return 0; | |
962 | } | |
963 | ||
44a6b1b6 | 964 | _pure_ static UnitActiveState swap_active_state(Unit *u) { |
07b0b134 ML |
965 | assert(u); |
966 | ||
967 | return state_translation_table[SWAP(u)->state]; | |
968 | } | |
969 | ||
44a6b1b6 | 970 | _pure_ static const char *swap_sub_state_to_string(Unit *u) { |
07b0b134 ML |
971 | assert(u); |
972 | ||
973 | return swap_state_to_string(SWAP(u)->state); | |
974 | } | |
975 | ||
f2f725e5 | 976 | _pure_ static bool swap_may_gc(Unit *u) { |
07b0b134 ML |
977 | Swap *s = SWAP(u); |
978 | ||
979 | assert(s); | |
980 | ||
f2f725e5 ZJS |
981 | if (s->from_proc_swaps) |
982 | return false; | |
983 | ||
984 | return true; | |
07b0b134 ML |
985 | } |
986 | ||
e04aad61 LP |
987 | static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
988 | Swap *s = SWAP(u); | |
e1770af8 | 989 | SwapResult f; |
e04aad61 LP |
990 | |
991 | assert(s); | |
992 | assert(pid >= 0); | |
993 | ||
994 | if (pid != s->control_pid) | |
995 | return; | |
996 | ||
997 | s->control_pid = 0; | |
998 | ||
1f0958f6 | 999 | if (is_clean_exit(code, status, EXIT_CLEAN_COMMAND, NULL)) |
e1770af8 LP |
1000 | f = SWAP_SUCCESS; |
1001 | else if (code == CLD_EXITED) | |
1002 | f = SWAP_FAILURE_EXIT_CODE; | |
1003 | else if (code == CLD_KILLED) | |
1004 | f = SWAP_FAILURE_SIGNAL; | |
1005 | else if (code == CLD_DUMPED) | |
1006 | f = SWAP_FAILURE_CORE_DUMP; | |
1007 | else | |
1008 | assert_not_reached("Unknown code"); | |
1009 | ||
a0fef983 | 1010 | if (s->result == SWAP_SUCCESS) |
e1770af8 | 1011 | s->result = f; |
e04aad61 LP |
1012 | |
1013 | if (s->control_command) { | |
6ea832a2 | 1014 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); |
e1770af8 | 1015 | |
e04aad61 LP |
1016 | s->control_command = NULL; |
1017 | s->control_command_id = _SWAP_EXEC_COMMAND_INVALID; | |
1018 | } | |
1019 | ||
91bbd9b7 LP |
1020 | unit_log_process_exit( |
1021 | u, f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
1022 | "Swap process", | |
1023 | swap_exec_command_to_string(s->control_command_id), | |
1024 | code, status); | |
e04aad61 LP |
1025 | |
1026 | switch (s->state) { | |
1027 | ||
1028 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1029 | case SWAP_ACTIVATING_DONE: |
e04aad61 | 1030 | |
50864457 | 1031 | if (f == SWAP_SUCCESS || s->from_proc_swaps) |
e1770af8 | 1032 | swap_enter_active(s, f); |
e04aad61 | 1033 | else |
e1770af8 | 1034 | swap_enter_dead(s, f); |
e04aad61 LP |
1035 | break; |
1036 | ||
1037 | case SWAP_DEACTIVATING: | |
1038 | case SWAP_DEACTIVATING_SIGKILL: | |
1039 | case SWAP_DEACTIVATING_SIGTERM: | |
1040 | ||
50864457 | 1041 | swap_enter_dead_or_active(s, f); |
e04aad61 LP |
1042 | break; |
1043 | ||
1044 | default: | |
1045 | assert_not_reached("Uh, control process died at wrong time."); | |
1046 | } | |
1047 | ||
1048 | /* Notify clients about changed exit status */ | |
1049 | unit_add_to_dbus_queue(u); | |
e04aad61 LP |
1050 | } |
1051 | ||
718db961 LP |
1052 | static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { |
1053 | Swap *s = SWAP(userdata); | |
e04aad61 LP |
1054 | |
1055 | assert(s); | |
718db961 | 1056 | assert(s->timer_event_source == source); |
e04aad61 LP |
1057 | |
1058 | switch (s->state) { | |
1059 | ||
1060 | case SWAP_ACTIVATING: | |
5bcb0f2b | 1061 | case SWAP_ACTIVATING_DONE: |
f2341e0a | 1062 | log_unit_warning(UNIT(s), "Activation timed out. Stopping."); |
50864457 | 1063 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1064 | break; |
1065 | ||
1066 | case SWAP_DEACTIVATING: | |
f2341e0a | 1067 | log_unit_warning(UNIT(s), "Deactivation timed out. Stopping."); |
e1770af8 | 1068 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT); |
e04aad61 LP |
1069 | break; |
1070 | ||
e04aad61 | 1071 | case SWAP_DEACTIVATING_SIGTERM: |
4819ff03 | 1072 | if (s->kill_context.send_sigkill) { |
50864457 | 1073 | log_unit_warning(UNIT(s), "Swap process timed out. Killing."); |
e1770af8 | 1074 | swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT); |
ba035df2 | 1075 | } else { |
50864457 LP |
1076 | log_unit_warning(UNIT(s), "Swap process timed out. Skipping SIGKILL. Ignoring."); |
1077 | swap_enter_dead_or_active(s, SWAP_FAILURE_TIMEOUT); | |
ba035df2 | 1078 | } |
e04aad61 LP |
1079 | break; |
1080 | ||
e04aad61 | 1081 | case SWAP_DEACTIVATING_SIGKILL: |
f2341e0a | 1082 | log_unit_warning(UNIT(s), "Swap process still around after SIGKILL. Ignoring."); |
50864457 | 1083 | swap_enter_dead_or_active(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 | ||
485ae697 | 1125 | device_found_node(m, d, DEVICE_FOUND_SWAP, DEVICE_FOUND_SWAP); |
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 | 1179 | if (swap->what) |
485ae697 | 1180 | device_found_node(m, swap->what, 0, DEVICE_FOUND_SWAP); |
628c89cc | 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: | |
31135818 LP |
1190 | (void) unit_acquire_invocation_id(u); |
1191 | swap_cycle_clear(swap); | |
e1770af8 | 1192 | swap_enter_active(swap, SWAP_SUCCESS); |
e04aad61 LP |
1193 | break; |
1194 | ||
5bcb0f2b LP |
1195 | case SWAP_ACTIVATING: |
1196 | swap_set_state(swap, SWAP_ACTIVATING_DONE); | |
1197 | break; | |
1198 | ||
e04aad61 LP |
1199 | default: |
1200 | /* Nothing really changed, but let's | |
1201 | * issue an notification call | |
1202 | * nonetheless, in case somebody is | |
1203 | * waiting for this. */ | |
1204 | swap_set_state(swap, swap->state); | |
1205 | break; | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | /* Reset the flags for later calls */ | |
1210 | swap->is_active = swap->just_activated = false; | |
1211 | } | |
1212 | ||
1213 | return 1; | |
1214 | } | |
1215 | ||
1216 | static Unit *swap_following(Unit *u) { | |
1217 | Swap *s = SWAP(u); | |
1218 | Swap *other, *first = NULL; | |
1219 | ||
1220 | assert(s); | |
1221 | ||
cdc89820 ZJS |
1222 | /* If the user configured the swap through /etc/fstab or |
1223 | * a device unit, follow that. */ | |
1224 | ||
1225 | if (s->from_fragment) | |
e04aad61 LP |
1226 | return NULL; |
1227 | ||
caac2704 | 1228 | LIST_FOREACH_OTHERS(same_devnode, other, s) |
cdc89820 ZJS |
1229 | if (other->from_fragment) |
1230 | return UNIT(other); | |
1231 | ||
b938cb90 | 1232 | /* Otherwise, make everybody follow the unit that's named after |
cdc89820 ZJS |
1233 | * the swap device in the kernel */ |
1234 | ||
1235 | if (streq_ptr(s->what, s->devnode)) | |
1236 | return NULL; | |
e04aad61 | 1237 | |
9670d583 LP |
1238 | LIST_FOREACH_AFTER(same_devnode, other, s) |
1239 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1240 | return UNIT(other); |
1241 | ||
9670d583 LP |
1242 | LIST_FOREACH_BEFORE(same_devnode, other, s) { |
1243 | if (streq_ptr(other->what, other->devnode)) | |
e04aad61 LP |
1244 | return UNIT(other); |
1245 | ||
1246 | first = other; | |
1247 | } | |
1248 | ||
cdc89820 | 1249 | /* Fall back to the first on the list */ |
e04aad61 | 1250 | return UNIT(first); |
07b0b134 ML |
1251 | } |
1252 | ||
6210e7fc | 1253 | static int swap_following_set(Unit *u, Set **_set) { |
5bcb0f2b | 1254 | Swap *s = SWAP(u), *other; |
af4fa99d | 1255 | _cleanup_set_free_ Set *set = NULL; |
6210e7fc LP |
1256 | int r; |
1257 | ||
1258 | assert(s); | |
1259 | assert(_set); | |
1260 | ||
9670d583 | 1261 | if (LIST_JUST_US(same_devnode, s)) { |
6210e7fc LP |
1262 | *_set = NULL; |
1263 | return 0; | |
1264 | } | |
1265 | ||
d5099efc | 1266 | set = set_new(NULL); |
5bcb0f2b | 1267 | if (!set) |
6210e7fc LP |
1268 | return -ENOMEM; |
1269 | ||
caac2704 | 1270 | LIST_FOREACH_OTHERS(same_devnode, other, s) { |
5bcb0f2b LP |
1271 | r = set_put(set, other); |
1272 | if (r < 0) | |
95f14a3e | 1273 | return r; |
5bcb0f2b | 1274 | } |
6210e7fc | 1275 | |
95f14a3e | 1276 | *_set = TAKE_PTR(set); |
6210e7fc | 1277 | return 1; |
6210e7fc LP |
1278 | } |
1279 | ||
07b0b134 ML |
1280 | static void swap_shutdown(Manager *m) { |
1281 | assert(m); | |
1282 | ||
718db961 | 1283 | m->swap_event_source = sd_event_source_unref(m->swap_event_source); |
74ca738f | 1284 | m->proc_swaps = safe_fclose(m->proc_swaps); |
525d3cc7 | 1285 | m->swaps_by_devnode = hashmap_free(m->swaps_by_devnode); |
07b0b134 ML |
1286 | } |
1287 | ||
ba64af90 | 1288 | static void swap_enumerate(Manager *m) { |
07b0b134 | 1289 | int r; |
9670d583 | 1290 | |
07b0b134 ML |
1291 | assert(m); |
1292 | ||
4e434314 | 1293 | if (!m->proc_swaps) { |
646134dc | 1294 | m->proc_swaps = fopen("/proc/swaps", "re"); |
ba64af90 LP |
1295 | if (!m->proc_swaps) { |
1296 | if (errno == ENOENT) | |
cb209a04 | 1297 | log_debug_errno(errno, "Not swap enabled, skipping enumeration."); |
ba64af90 | 1298 | else |
cb209a04 | 1299 | log_warning_errno(errno, "Failed to open /proc/swaps, ignoring: %m"); |
ba64af90 LP |
1300 | |
1301 | return; | |
1302 | } | |
4e434314 | 1303 | |
151b9b96 | 1304 | r = sd_event_add_io(m->event, &m->swap_event_source, fileno(m->proc_swaps), EPOLLPRI, swap_dispatch_io, m); |
ba64af90 LP |
1305 | if (r < 0) { |
1306 | log_error_errno(r, "Failed to watch /proc/swaps: %m"); | |
29083707 | 1307 | goto fail; |
ba64af90 | 1308 | } |
29083707 LP |
1309 | |
1310 | /* Dispatch this before we dispatch SIGCHLD, so that | |
1311 | * we always get the events from /proc/swaps before | |
1312 | * the SIGCHLD of /sbin/swapon. */ | |
83231637 | 1313 | r = sd_event_source_set_priority(m->swap_event_source, SD_EVENT_PRIORITY_NORMAL-10); |
ba64af90 LP |
1314 | if (r < 0) { |
1315 | log_error_errno(r, "Failed to change /proc/swaps priority: %m"); | |
718db961 | 1316 | goto fail; |
ba64af90 | 1317 | } |
7dfbe2e3 TG |
1318 | |
1319 | (void) sd_event_source_set_description(m->swap_event_source, "swap-proc"); | |
4e434314 LP |
1320 | } |
1321 | ||
646134dc ZJS |
1322 | r = swap_load_proc_swaps(m, false); |
1323 | if (r < 0) | |
718db961 LP |
1324 | goto fail; |
1325 | ||
ba64af90 | 1326 | return; |
07b0b134 | 1327 | |
718db961 LP |
1328 | fail: |
1329 | swap_shutdown(m); | |
07b0b134 ML |
1330 | } |
1331 | ||
4366e598 | 1332 | int swap_process_device_new(Manager *m, sd_device *dev) { |
9670d583 | 1333 | _cleanup_free_ char *e = NULL; |
4366e598 | 1334 | const char *dn, *devlink; |
cabf58b2 | 1335 | Unit *u; |
9670d583 LP |
1336 | int r = 0; |
1337 | ||
1338 | assert(m); | |
1339 | assert(dev); | |
1340 | ||
4366e598 YW |
1341 | r = sd_device_get_devname(dev, &dn); |
1342 | if (r < 0) | |
9670d583 LP |
1343 | return 0; |
1344 | ||
7410616c LP |
1345 | r = unit_name_from_path(dn, ".swap", &e); |
1346 | if (r < 0) | |
1347 | return r; | |
9670d583 | 1348 | |
cabf58b2 FB |
1349 | u = manager_get_unit(m, e); |
1350 | if (u) | |
1351 | r = swap_set_devnode(SWAP(u), dn); | |
9670d583 | 1352 | |
4366e598 | 1353 | FOREACH_DEVICE_DEVLINK(dev, devlink) { |
9670d583 | 1354 | _cleanup_free_ char *n = NULL; |
7410616c | 1355 | int q; |
9670d583 | 1356 | |
4366e598 | 1357 | q = unit_name_from_path(devlink, ".swap", &n); |
7410616c LP |
1358 | if (q < 0) |
1359 | return q; | |
9670d583 | 1360 | |
cabf58b2 FB |
1361 | u = manager_get_unit(m, n); |
1362 | if (u) { | |
1363 | q = swap_set_devnode(SWAP(u), dn); | |
9670d583 LP |
1364 | if (q < 0) |
1365 | r = q; | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | return r; | |
1370 | } | |
1371 | ||
4366e598 | 1372 | int swap_process_device_remove(Manager *m, sd_device *dev) { |
9670d583 LP |
1373 | const char *dn; |
1374 | int r = 0; | |
1375 | Swap *s; | |
1376 | ||
4366e598 YW |
1377 | r = sd_device_get_devname(dev, &dn); |
1378 | if (r < 0) | |
9670d583 LP |
1379 | return 0; |
1380 | ||
1381 | while ((s = hashmap_get(m->swaps_by_devnode, dn))) { | |
1382 | int q; | |
1383 | ||
1384 | q = swap_set_devnode(s, NULL); | |
1385 | if (q < 0) | |
1386 | r = q; | |
1387 | } | |
1388 | ||
1389 | return r; | |
1390 | } | |
1391 | ||
fdf20a31 | 1392 | static void swap_reset_failed(Unit *u) { |
5632e374 LP |
1393 | Swap *s = SWAP(u); |
1394 | ||
1395 | assert(s); | |
1396 | ||
fdf20a31 | 1397 | if (s->state == SWAP_FAILED) |
5632e374 | 1398 | swap_set_state(s, SWAP_DEAD); |
e04aad61 | 1399 | |
e1770af8 | 1400 | s->result = SWAP_SUCCESS; |
5632e374 LP |
1401 | } |
1402 | ||
718db961 | 1403 | static int swap_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) { |
814cc562 | 1404 | return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error); |
8a0867d6 LP |
1405 | } |
1406 | ||
7a7821c8 | 1407 | static int swap_get_timeout(Unit *u, usec_t *timeout) { |
68db7a3b | 1408 | Swap *s = SWAP(u); |
7a7821c8 | 1409 | usec_t t; |
68db7a3b ZJS |
1410 | int r; |
1411 | ||
1412 | if (!s->timer_event_source) | |
1413 | return 0; | |
1414 | ||
7a7821c8 | 1415 | r = sd_event_source_get_time(s->timer_event_source, &t); |
68db7a3b ZJS |
1416 | if (r < 0) |
1417 | return r; | |
7a7821c8 LP |
1418 | if (t == USEC_INFINITY) |
1419 | return 0; | |
68db7a3b | 1420 | |
7a7821c8 | 1421 | *timeout = t; |
68db7a3b ZJS |
1422 | return 1; |
1423 | } | |
1424 | ||
1c2e9646 | 1425 | static bool swap_supported(void) { |
0faacd47 LP |
1426 | static int supported = -1; |
1427 | ||
1428 | /* If swap support is not available in the kernel, or we are | |
1429 | * running in a container we don't support swap units, and any | |
1430 | * attempts to starting one should fail immediately. */ | |
1431 | ||
1432 | if (supported < 0) | |
1433 | supported = | |
1434 | access("/proc/swaps", F_OK) >= 0 && | |
75f86906 | 1435 | detect_container() <= 0; |
0faacd47 LP |
1436 | |
1437 | return supported; | |
1438 | } | |
1439 | ||
291d565a LP |
1440 | static int swap_control_pid(Unit *u) { |
1441 | Swap *s = SWAP(u); | |
1442 | ||
1443 | assert(s); | |
1444 | ||
1445 | return s->control_pid; | |
1446 | } | |
1447 | ||
e04aad61 LP |
1448 | static const char* const swap_exec_command_table[_SWAP_EXEC_COMMAND_MAX] = { |
1449 | [SWAP_EXEC_ACTIVATE] = "ExecActivate", | |
1450 | [SWAP_EXEC_DEACTIVATE] = "ExecDeactivate", | |
1451 | }; | |
1452 | ||
1453 | DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand); | |
1454 | ||
e1770af8 LP |
1455 | static const char* const swap_result_table[_SWAP_RESULT_MAX] = { |
1456 | [SWAP_SUCCESS] = "success", | |
1457 | [SWAP_FAILURE_RESOURCES] = "resources", | |
1458 | [SWAP_FAILURE_TIMEOUT] = "timeout", | |
1459 | [SWAP_FAILURE_EXIT_CODE] = "exit-code", | |
1460 | [SWAP_FAILURE_SIGNAL] = "signal", | |
07299350 LP |
1461 | [SWAP_FAILURE_CORE_DUMP] = "core-dump", |
1462 | [SWAP_FAILURE_START_LIMIT_HIT] = "start-limit-hit", | |
e1770af8 LP |
1463 | }; |
1464 | ||
1465 | DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult); | |
1466 | ||
07b0b134 | 1467 | const UnitVTable swap_vtable = { |
7d17cfbc | 1468 | .object_size = sizeof(Swap), |
718db961 LP |
1469 | .exec_context_offset = offsetof(Swap, exec_context), |
1470 | .cgroup_context_offset = offsetof(Swap, cgroup_context), | |
1471 | .kill_context_offset = offsetof(Swap, kill_context), | |
613b411c | 1472 | .exec_runtime_offset = offsetof(Swap, exec_runtime), |
29206d46 | 1473 | .dynamic_creds_offset = offsetof(Swap, dynamic_creds), |
3ef63c31 | 1474 | |
f975e971 LP |
1475 | .sections = |
1476 | "Unit\0" | |
1477 | "Swap\0" | |
1478 | "Install\0", | |
4ad49000 | 1479 | .private_section = "Swap", |
71645aca | 1480 | |
4e85aff4 | 1481 | .init = swap_init, |
07b0b134 | 1482 | .load = swap_load, |
6e620bec | 1483 | .done = swap_done, |
07b0b134 ML |
1484 | |
1485 | .coldplug = swap_coldplug, | |
1486 | ||
1487 | .dump = swap_dump, | |
1488 | ||
1489 | .start = swap_start, | |
1490 | .stop = swap_stop, | |
1491 | ||
8a0867d6 LP |
1492 | .kill = swap_kill, |
1493 | ||
68db7a3b ZJS |
1494 | .get_timeout = swap_get_timeout, |
1495 | ||
07b0b134 ML |
1496 | .serialize = swap_serialize, |
1497 | .deserialize_item = swap_deserialize_item, | |
1498 | ||
1499 | .active_state = swap_active_state, | |
1500 | .sub_state_to_string = swap_sub_state_to_string, | |
1501 | ||
f2f725e5 | 1502 | .may_gc = swap_may_gc, |
07b0b134 | 1503 | |
e04aad61 | 1504 | .sigchld_event = swap_sigchld_event, |
e04aad61 LP |
1505 | |
1506 | .reset_failed = swap_reset_failed, | |
1507 | ||
291d565a LP |
1508 | .control_pid = swap_control_pid, |
1509 | ||
718db961 | 1510 | .bus_vtable = bus_swap_vtable, |
74c964d3 LP |
1511 | .bus_set_property = bus_swap_set_property, |
1512 | .bus_commit_properties = bus_swap_commit_properties, | |
07b0b134 | 1513 | |
e04aad61 | 1514 | .following = swap_following, |
6210e7fc | 1515 | .following_set = swap_following_set, |
5632e374 | 1516 | |
6e620bec | 1517 | .enumerate = swap_enumerate, |
c6918296 | 1518 | .shutdown = swap_shutdown, |
0faacd47 | 1519 | .supported = swap_supported, |
c6918296 MS |
1520 | |
1521 | .status_message_formats = { | |
1522 | .starting_stopping = { | |
1523 | [0] = "Activating swap %s...", | |
1524 | [1] = "Deactivating swap %s...", | |
1525 | }, | |
1526 | .finished_start_job = { | |
1527 | [JOB_DONE] = "Activated swap %s.", | |
1528 | [JOB_FAILED] = "Failed to activate swap %s.", | |
c6918296 MS |
1529 | [JOB_TIMEOUT] = "Timed out activating swap %s.", |
1530 | }, | |
1531 | .finished_stop_job = { | |
1532 | [JOB_DONE] = "Deactivated swap %s.", | |
1533 | [JOB_FAILED] = "Failed deactivating swap %s.", | |
1534 | [JOB_TIMEOUT] = "Timed out deactivating swap %s.", | |
1535 | }, | |
1536 | }, | |
07b0b134 | 1537 | }; |