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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
19adb8a3 | 2 | /*** |
96b2fb93 | 3 | Copyright © 2018 Dell Inc. |
19adb8a3 ZJS |
4 | ***/ |
5 | ||
a8fbdf54 | 6 | #include <errno.h> |
ca78ad1d | 7 | #include <fcntl.h> |
17c40b3a | 8 | #include <linux/fs.h> |
65ddc2c5 | 9 | #include <linux/magic.h> |
a8fbdf54 TA |
10 | #include <stdbool.h> |
11 | #include <stddef.h> | |
36dd5ffd | 12 | #include <sys/ioctl.h> |
ca78ad1d ZJS |
13 | #include <sys/stat.h> |
14 | #include <sys/types.h> | |
a8fbdf54 TA |
15 | #include <syslog.h> |
16 | #include <unistd.h> | |
19adb8a3 | 17 | |
746cf898 SS |
18 | #include "sd-device.h" |
19 | ||
b5efdb8a | 20 | #include "alloc-util.h" |
52133271 | 21 | #include "blockdev-util.h" |
7bdf56a2 | 22 | #include "btrfs-util.h" |
19adb8a3 | 23 | #include "conf-parser.h" |
a0f29c76 | 24 | #include "def.h" |
746cf898 | 25 | #include "device-util.h" |
7176f06c | 26 | #include "devnum-util.h" |
490d20e6 | 27 | #include "env-util.h" |
427646ea | 28 | #include "errno-util.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
19adb8a3 | 30 | #include "fileio.h" |
91ea7ebc SS |
31 | #include "hexdecoct.h" |
32 | #include "id128-util.h" | |
19adb8a3 | 33 | #include "log.h" |
a8fbdf54 | 34 | #include "macro.h" |
411ae92b | 35 | #include "path-util.h" |
3ffd4af2 | 36 | #include "sleep-config.h" |
91ea7ebc | 37 | #include "siphash24.h" |
65ddc2c5 | 38 | #include "stat-util.h" |
7bdf56a2 | 39 | #include "stdio-util.h" |
be2a4b0d | 40 | #include "string-table.h" |
07630cea | 41 | #include "string-util.h" |
19adb8a3 | 42 | #include "strv.h" |
1bbbefe7 | 43 | #include "time-util.h" |
19adb8a3 | 44 | |
746cf898 | 45 | #define BATTERY_LOW_CAPACITY_LEVEL 5 |
91ea7ebc SS |
46 | #define DISCHARGE_RATE_FILEPATH "/var/lib/systemd/sleep/battery_discharge_percentage_rate_per_hour" |
47 | #define BATTERY_DISCHARGE_RATE_HASH_KEY SD_ID128_MAKE(5f,9a,20,18,38,76,46,07,8d,36,58,0b,bb,c4,e0,63) | |
48 | ||
746cf898 SS |
49 | static void *CAPACITY_TO_PTR(int capacity) { |
50 | assert(capacity >= 0); | |
51 | assert(capacity <= 100); | |
52 | return INT_TO_PTR(capacity + 1); | |
53 | } | |
54 | ||
55 | static int PTR_TO_CAPACITY(void *p) { | |
56 | int capacity = PTR_TO_INT(p) - 1; | |
57 | assert(capacity >= 0); | |
58 | assert(capacity <= 100); | |
59 | return capacity; | |
60 | } | |
61 | ||
28ca9c24 | 62 | int parse_sleep_config(SleepConfig **ret_sleep_config) { |
c2b2df60 | 63 | _cleanup_(free_sleep_configp) SleepConfig *sc = NULL; |
e8f1d00d ZJS |
64 | int allow_suspend = -1, allow_hibernate = -1, |
65 | allow_s2h = -1, allow_hybrid_sleep = -1; | |
28ca9c24 ZS |
66 | |
67 | sc = new0(SleepConfig, 1); | |
68 | if (!sc) | |
69 | return log_oom(); | |
19adb8a3 ZJS |
70 | |
71 | const ConfigTableItem items[] = { | |
c8cd8ca3 LP |
72 | { "Sleep", "AllowSuspend", config_parse_tristate, 0, &allow_suspend }, |
73 | { "Sleep", "AllowHibernation", config_parse_tristate, 0, &allow_hibernate }, | |
74 | { "Sleep", "AllowSuspendThenHibernate", config_parse_tristate, 0, &allow_s2h }, | |
75 | { "Sleep", "AllowHybridSleep", config_parse_tristate, 0, &allow_hybrid_sleep }, | |
76 | ||
77 | { "Sleep", "SuspendMode", config_parse_strv, 0, sc->modes + SLEEP_SUSPEND }, | |
78 | { "Sleep", "SuspendState", config_parse_strv, 0, sc->states + SLEEP_SUSPEND }, | |
79 | { "Sleep", "HibernateMode", config_parse_strv, 0, sc->modes + SLEEP_HIBERNATE }, | |
80 | { "Sleep", "HibernateState", config_parse_strv, 0, sc->states + SLEEP_HIBERNATE }, | |
81 | { "Sleep", "HybridSleepMode", config_parse_strv, 0, sc->modes + SLEEP_HYBRID_SLEEP }, | |
82 | { "Sleep", "HybridSleepState", config_parse_strv, 0, sc->states + SLEEP_HYBRID_SLEEP }, | |
83 | ||
84 | { "Sleep", "HibernateDelaySec", config_parse_sec, 0, &sc->hibernate_delay_sec }, | |
34c10968 LP |
85 | {} |
86 | }; | |
19adb8a3 | 87 | |
4f9ff96a LP |
88 | (void) config_parse_many_nulstr( |
89 | PKGSYSCONFDIR "/sleep.conf", | |
90 | CONF_PATHS_NULSTR("systemd/sleep.conf.d"), | |
91 | "Sleep\0", | |
92 | config_item_table_lookup, items, | |
93 | CONFIG_PARSE_WARN, | |
94 | NULL, | |
95 | NULL); | |
19adb8a3 | 96 | |
28ca9c24 | 97 | /* use default values unless set */ |
c8cd8ca3 LP |
98 | sc->allow[SLEEP_SUSPEND] = allow_suspend != 0; |
99 | sc->allow[SLEEP_HIBERNATE] = allow_hibernate != 0; | |
100 | sc->allow[SLEEP_HYBRID_SLEEP] = allow_hybrid_sleep >= 0 ? allow_hybrid_sleep | |
7874583d | 101 | : (allow_suspend != 0 && allow_hibernate != 0); |
c8cd8ca3 | 102 | sc->allow[SLEEP_SUSPEND_THEN_HIBERNATE] = allow_s2h >= 0 ? allow_s2h |
7874583d | 103 | : (allow_suspend != 0 && allow_hibernate != 0); |
28ca9c24 | 104 | |
c8cd8ca3 LP |
105 | if (!sc->states[SLEEP_SUSPEND]) |
106 | sc->states[SLEEP_SUSPEND] = strv_new("mem", "standby", "freeze"); | |
107 | if (!sc->modes[SLEEP_HIBERNATE]) | |
108 | sc->modes[SLEEP_HIBERNATE] = strv_new("platform", "shutdown"); | |
109 | if (!sc->states[SLEEP_HIBERNATE]) | |
110 | sc->states[SLEEP_HIBERNATE] = strv_new("disk"); | |
111 | if (!sc->modes[SLEEP_HYBRID_SLEEP]) | |
112 | sc->modes[SLEEP_HYBRID_SLEEP] = strv_new("suspend", "platform", "shutdown"); | |
113 | if (!sc->states[SLEEP_HYBRID_SLEEP]) | |
114 | sc->states[SLEEP_HYBRID_SLEEP] = strv_new("disk"); | |
28ca9c24 | 115 | if (sc->hibernate_delay_sec == 0) |
a077755a | 116 | sc->hibernate_delay_sec = 2 * USEC_PER_HOUR; |
28ca9c24 ZS |
117 | |
118 | /* ensure values set for all required fields */ | |
c8cd8ca3 LP |
119 | if (!sc->states[SLEEP_SUSPEND] || !sc->modes[SLEEP_HIBERNATE] |
120 | || !sc->states[SLEEP_HIBERNATE] || !sc->modes[SLEEP_HYBRID_SLEEP] || !sc->states[SLEEP_HYBRID_SLEEP]) | |
19adb8a3 | 121 | return log_oom(); |
19adb8a3 | 122 | |
28ca9c24 | 123 | *ret_sleep_config = TAKE_PTR(sc); |
c58493c0 | 124 | |
19adb8a3 ZJS |
125 | return 0; |
126 | } | |
127 | ||
746cf898 SS |
128 | /* Get the list of batteries */ |
129 | static int battery_enumerator_new(sd_device_enumerator **ret) { | |
130 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
96d662fa SS |
131 | int r; |
132 | ||
746cf898 | 133 | assert(ret); |
96d662fa | 134 | |
746cf898 SS |
135 | r = sd_device_enumerator_new(&e); |
136 | if (r < 0) | |
137 | return r; | |
138 | ||
139 | r = sd_device_enumerator_add_match_subsystem(e, "power_supply", /* match= */ true); | |
140 | if (r < 0) | |
141 | return r; | |
142 | ||
143 | r = sd_device_enumerator_add_match_property(e, "POWER_SUPPLY_TYPE", "Battery"); | |
96d662fa | 144 | if (r < 0) |
746cf898 SS |
145 | return r; |
146 | ||
147 | *ret = TAKE_PTR(e); | |
96d662fa | 148 | |
746cf898 SS |
149 | return 0; |
150 | } | |
151 | ||
152 | static int get_capacity_by_name(Hashmap *capacities_by_name, const char *name) { | |
153 | void *p; | |
154 | ||
155 | assert(capacities_by_name); | |
156 | assert(name); | |
157 | ||
158 | p = hashmap_get(capacities_by_name, name); | |
159 | if (!p) | |
160 | return -ENOENT; | |
161 | ||
162 | return PTR_TO_CAPACITY(p); | |
96d662fa SS |
163 | } |
164 | ||
165 | /* Battery percentage capacity fetched from capacity file and if in range 0-100 then returned */ | |
746cf898 SS |
166 | static int read_battery_capacity_percentage(sd_device *dev) { |
167 | const char *power_supply_capacity; | |
96d662fa SS |
168 | int battery_capacity, r; |
169 | ||
746cf898 SS |
170 | assert(dev); |
171 | ||
172 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_CAPACITY", &power_supply_capacity); | |
96d662fa | 173 | if (r < 0) |
746cf898 | 174 | return log_device_debug_errno(dev, r, "Failed to read battery capacity: %m"); |
96d662fa | 175 | |
746cf898 | 176 | r = safe_atoi(power_supply_capacity, &battery_capacity); |
96d662fa | 177 | if (r < 0) |
746cf898 | 178 | return log_device_debug_errno(dev, r, "Failed to parse battery capacity: %m"); |
96d662fa SS |
179 | |
180 | if (battery_capacity < 0 || battery_capacity > 100) | |
746cf898 | 181 | return log_device_debug_errno(dev, SYNTHETIC_ERRNO(ERANGE), "Invalid battery capacity"); |
96d662fa SS |
182 | |
183 | return battery_capacity; | |
184 | } | |
185 | ||
746cf898 SS |
186 | /* If battery percentage capacity is less than equal to 5% return success */ |
187 | int battery_is_low(void) { | |
188 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
189 | sd_device *dev; | |
190 | int r; | |
191 | ||
192 | /* We have not used battery capacity_level since value is set to full | |
193 | * or Normal in case acpi is not working properly. In case of no battery | |
194 | * 0 will be returned and system will be suspended for 1st cycle then hibernated */ | |
195 | ||
196 | r = battery_enumerator_new(&e); | |
197 | if (r < 0) | |
198 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); | |
199 | ||
200 | FOREACH_DEVICE(e, dev) { | |
201 | r = read_battery_capacity_percentage(dev); | |
202 | if (r < 0) { | |
203 | log_device_debug_errno(dev, r, "Failed to get battery capacity, ignoring: %m"); | |
204 | continue; | |
205 | } | |
206 | if (r > BATTERY_LOW_CAPACITY_LEVEL) | |
207 | return false; | |
208 | } | |
209 | ||
210 | return true; | |
211 | } | |
212 | ||
213 | /* Store current capacity of each battery before suspension and timestamp */ | |
214 | int fetch_batteries_capacity_by_name(Hashmap **ret) { | |
215 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
216 | _cleanup_(hashmap_freep) Hashmap *batteries_capacity_by_name = NULL; | |
217 | sd_device *dev; | |
91ea7ebc SS |
218 | int r; |
219 | ||
91ea7ebc SS |
220 | assert(ret); |
221 | ||
746cf898 SS |
222 | batteries_capacity_by_name = hashmap_new(&string_hash_ops_free); |
223 | if (!batteries_capacity_by_name) | |
224 | return log_oom_debug(); | |
225 | ||
226 | r = battery_enumerator_new(&e); | |
227 | if (r < 0) | |
228 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); | |
229 | ||
230 | FOREACH_DEVICE(e, dev) { | |
231 | _cleanup_free_ char *battery_name_copy = NULL; | |
232 | const char *battery_name; | |
233 | int battery_capacity; | |
234 | ||
235 | battery_capacity = r = read_battery_capacity_percentage(dev); | |
236 | if (r < 0) { | |
237 | log_device_debug_errno(dev, r, "Failed to get battery capacity, ignoring: %m"); | |
238 | continue; | |
239 | } | |
240 | ||
241 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_NAME", &battery_name); | |
242 | if (r < 0) { | |
243 | log_device_debug_errno(dev, r, "Failed to read battery name, ignoring: %m"); | |
244 | continue; | |
245 | } | |
246 | ||
247 | battery_name_copy = strdup(battery_name); | |
248 | if (!battery_name_copy) | |
249 | return log_oom_debug(); | |
250 | ||
251 | r = hashmap_put(batteries_capacity_by_name, battery_name_copy, CAPACITY_TO_PTR(battery_capacity)); | |
252 | if (r < 0) | |
253 | return log_device_debug_errno(dev, r, "Failed to store battery capacity: %m"); | |
254 | ||
255 | TAKE_PTR(battery_name_copy); | |
256 | } | |
257 | ||
258 | *ret = TAKE_PTR(batteries_capacity_by_name); | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | /* Read file path and return hash of value in that file */ | |
264 | static int get_battery_identifier(sd_device *dev, const char *property, struct siphash *state) { | |
265 | const char *x; | |
266 | int r; | |
267 | ||
268 | assert(dev); | |
269 | assert(property); | |
270 | assert(state); | |
271 | ||
272 | r = sd_device_get_property_value(dev, property, &x); | |
91ea7ebc | 273 | if (r == -ENOENT) |
746cf898 | 274 | log_device_debug_errno(dev, r, "battery device property %s is unavailable, ignoring: %m", property); |
91ea7ebc | 275 | else if (r < 0) |
746cf898 SS |
276 | return log_device_debug_errno(dev, r, "Failed to read battery device property %s: %m", property); |
277 | else if (isempty(x)) | |
278 | log_device_debug(dev, "battery device property '%s' is null.", property); | |
91ea7ebc | 279 | else |
746cf898 | 280 | siphash24_compress_string(x, state); |
91ea7ebc SS |
281 | |
282 | return 0; | |
283 | } | |
284 | ||
285 | /* Read system and battery identifier from specific location and generate hash of it */ | |
746cf898 | 286 | static int get_system_battery_identifier_hash(sd_device *dev, uint64_t *ret) { |
91ea7ebc SS |
287 | struct siphash state; |
288 | sd_id128_t machine_id, product_id; | |
289 | int r; | |
290 | ||
746cf898 SS |
291 | assert(ret); |
292 | assert(dev); | |
91ea7ebc SS |
293 | |
294 | siphash24_init(&state, BATTERY_DISCHARGE_RATE_HASH_KEY.bytes); | |
746cf898 SS |
295 | |
296 | get_battery_identifier(dev, "POWER_SUPPLY_MANUFACTURER", &state); | |
297 | get_battery_identifier(dev, "POWER_SUPPLY_MODEL_NAME", &state); | |
298 | get_battery_identifier(dev, "POWER_SUPPLY_SERIAL_NUMBER", &state); | |
91ea7ebc SS |
299 | |
300 | r = sd_id128_get_machine(&machine_id); | |
301 | if (r == -ENOENT) | |
302 | log_debug_errno(r, "machine ID is unavailable: %m"); | |
303 | else if (r < 0) | |
304 | return log_debug_errno(r, "Failed to get machine ID: %m"); | |
305 | else | |
306 | siphash24_compress(&machine_id, sizeof(sd_id128_t), &state); | |
307 | ||
308 | r = id128_get_product(&product_id); | |
309 | if (r == -ENOENT) | |
310 | log_debug_errno(r, "product_id does not exist: %m"); | |
311 | else if (r < 0) | |
312 | return log_debug_errno(r, "Failed to get product ID: %m"); | |
313 | else | |
314 | siphash24_compress(&product_id, sizeof(sd_id128_t), &state); | |
315 | ||
746cf898 | 316 | *ret = siphash24_finalize(&state); |
91ea7ebc SS |
317 | |
318 | return 0; | |
319 | } | |
320 | ||
321 | /* battery percentage discharge rate per hour is in range 1-199 then return success */ | |
322 | static bool battery_discharge_rate_is_valid(int battery_discharge_rate) { | |
323 | return battery_discharge_rate > 0 && battery_discharge_rate < 200; | |
324 | } | |
325 | ||
326 | /* Battery percentage discharge rate per hour is read from specific file. It is stored along with system | |
327 | * and battery identifier hash to maintain the integrity of discharge rate value */ | |
746cf898 SS |
328 | static int get_battery_discharge_rate(sd_device *dev, int *ret) { |
329 | _cleanup_fclose_ FILE *f = NULL; | |
330 | uint64_t current_hash_id; | |
91ea7ebc | 331 | const char *p; |
746cf898 | 332 | int r; |
91ea7ebc | 333 | |
746cf898 SS |
334 | assert(dev); |
335 | assert(ret); | |
91ea7ebc | 336 | |
746cf898 SS |
337 | f = fopen(DISCHARGE_RATE_FILEPATH, "re"); |
338 | if (!f) | |
339 | return log_debug_errno(errno, "Failed to read discharge rate from " DISCHARGE_RATE_FILEPATH ": %m"); | |
91ea7ebc | 340 | |
746cf898 | 341 | r = get_system_battery_identifier_hash(dev, ¤t_hash_id); |
91ea7ebc | 342 | if (r < 0) |
746cf898 SS |
343 | return log_device_debug_errno(dev, r, "Failed to generate system battery identifier hash: %m"); |
344 | ||
345 | for (;;) { | |
346 | _cleanup_free_ char *stored_hash_id = NULL, *stored_discharge_rate = NULL, *line = NULL; | |
347 | uint64_t hash_id; | |
348 | int discharge_rate; | |
349 | ||
350 | r = read_line(f, LONG_LINE_MAX, &line); | |
351 | if (r < 0) | |
352 | return log_debug_errno(r, "Failed to read discharge rate from " DISCHARGE_RATE_FILEPATH ": %m"); | |
353 | if (r == 0) | |
354 | break; | |
355 | ||
356 | p = line; | |
357 | r = extract_many_words(&p, NULL, 0, &stored_hash_id, &stored_discharge_rate, NULL); | |
358 | if (r < 0) | |
359 | return log_debug_errno(r, "Failed to parse hash_id and discharge_rate read from " DISCHARGE_RATE_FILEPATH ": %m"); | |
360 | if (r != 2) | |
361 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid number of items fetched from " DISCHARGE_RATE_FILEPATH); | |
362 | ||
363 | r = safe_atou64(stored_hash_id, &hash_id); | |
364 | if (r < 0) | |
365 | return log_debug_errno(r, "Failed to parse hash ID read from " DISCHARGE_RATE_FILEPATH " location: %m"); | |
366 | ||
367 | if (current_hash_id != hash_id) | |
368 | /* matching device not found, move to next line */ | |
369 | continue; | |
370 | ||
371 | r = safe_atoi(stored_discharge_rate, &discharge_rate); | |
372 | if (r < 0) | |
373 | return log_device_debug_errno(dev, r, "Failed to parse discharge rate read from " DISCHARGE_RATE_FILEPATH ": %m"); | |
374 | ||
375 | if (!battery_discharge_rate_is_valid(discharge_rate)) | |
376 | return log_device_debug_errno(dev, SYNTHETIC_ERRNO(ERANGE), "Invalid battery discharge percentage rate per hour: %m"); | |
377 | ||
378 | *ret = discharge_rate; | |
379 | return 0; /* matching device found, exit iteration */ | |
380 | } | |
381 | ||
382 | return -ENOENT; | |
383 | } | |
91ea7ebc | 384 | |
746cf898 SS |
385 | /* Write battery percentage discharge rate per hour along with system and battery identifier hash to file */ |
386 | static int put_battery_discharge_rate(int estimated_battery_discharge_rate, uint64_t system_hash_id, bool trunc) { | |
387 | int r; | |
91ea7ebc | 388 | |
746cf898 SS |
389 | if (!battery_discharge_rate_is_valid(estimated_battery_discharge_rate)) |
390 | return log_debug_errno(SYNTHETIC_ERRNO(ERANGE), | |
391 | "Invalid battery discharge rate %d%% per hour: %m", | |
392 | estimated_battery_discharge_rate); | |
91ea7ebc | 393 | |
746cf898 SS |
394 | r = write_string_filef( |
395 | DISCHARGE_RATE_FILEPATH, | |
396 | WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_MKDIR_0755 | (trunc ? WRITE_STRING_FILE_TRUNCATE : 0), | |
397 | "%"PRIu64" %d", | |
398 | system_hash_id, | |
399 | estimated_battery_discharge_rate); | |
91ea7ebc | 400 | if (r < 0) |
746cf898 | 401 | return log_debug_errno(r, "Failed to update %s: %m", DISCHARGE_RATE_FILEPATH); |
91ea7ebc | 402 | |
746cf898 | 403 | log_debug("Estimated discharge rate %d%% per hour successfully saved to %s", estimated_battery_discharge_rate, DISCHARGE_RATE_FILEPATH); |
91ea7ebc | 404 | |
746cf898 | 405 | return 0; |
91ea7ebc SS |
406 | } |
407 | ||
746cf898 SS |
408 | /* Estimate battery discharge rate using stored previous and current capacity over timestamp difference */ |
409 | int estimate_battery_discharge_rate_per_hour( | |
410 | Hashmap *last_capacity, | |
411 | Hashmap *current_capacity, | |
412 | usec_t before_timestamp, | |
413 | usec_t after_timestamp) { | |
414 | ||
415 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
416 | sd_device *dev; | |
417 | bool trunc = true; | |
91ea7ebc SS |
418 | int r; |
419 | ||
746cf898 SS |
420 | assert(last_capacity); |
421 | assert(current_capacity); | |
422 | assert(before_timestamp < after_timestamp); | |
91ea7ebc | 423 | |
746cf898 | 424 | r = battery_enumerator_new(&e); |
91ea7ebc | 425 | if (r < 0) |
746cf898 SS |
426 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); |
427 | ||
428 | FOREACH_DEVICE(e, dev) { | |
429 | int battery_last_capacity, battery_current_capacity, battery_discharge_rate; | |
430 | const char *battery_name; | |
431 | uint64_t system_hash_id; | |
432 | ||
433 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_NAME", &battery_name); | |
434 | if (r < 0) { | |
435 | log_device_debug_errno(dev, r, "Failed to read battery name, ignoring: %m"); | |
436 | continue; | |
437 | } | |
438 | ||
439 | battery_last_capacity = get_capacity_by_name(last_capacity, battery_name); | |
440 | if (battery_last_capacity < 0) | |
441 | continue; | |
442 | ||
443 | battery_current_capacity = get_capacity_by_name(current_capacity, battery_name); | |
444 | if (battery_current_capacity < 0) | |
445 | continue; | |
446 | ||
447 | if (battery_current_capacity >= battery_last_capacity) { | |
448 | log_device_debug(dev, "Battery was not discharged during suspension"); | |
449 | continue; | |
450 | } | |
451 | ||
452 | r = get_system_battery_identifier_hash(dev, &system_hash_id); | |
453 | if (r < 0) | |
454 | return log_device_debug_errno(dev, r, "Failed to generate system battery identifier hash: %m"); | |
455 | ||
456 | log_device_debug(dev, | |
457 | "%d%% was discharged in %s. Estimating discharge rate...", | |
458 | battery_last_capacity - battery_current_capacity, | |
459 | FORMAT_TIMESPAN(after_timestamp - before_timestamp, USEC_PER_SEC)); | |
460 | ||
461 | battery_discharge_rate = (battery_last_capacity - battery_current_capacity) * USEC_PER_HOUR / (after_timestamp - before_timestamp); | |
462 | r = put_battery_discharge_rate(battery_discharge_rate, system_hash_id, trunc); | |
463 | if (r < 0) | |
464 | log_device_warning_errno(dev, r, "Failed to update battery discharge rate, ignoring: %m"); | |
465 | else | |
466 | trunc = false; | |
467 | } | |
91ea7ebc | 468 | |
746cf898 SS |
469 | return 0; |
470 | } | |
471 | ||
472 | /* calculate the suspend interval for each battery and then return the sum of it */ | |
473 | int get_total_suspend_interval(Hashmap *last_capacity, usec_t *ret) { | |
474 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
475 | usec_t total_suspend_interval = 0; | |
476 | sd_device *dev; | |
477 | int r; | |
478 | ||
479 | assert(last_capacity); | |
480 | assert(ret); | |
481 | ||
482 | r = battery_enumerator_new(&e); | |
91ea7ebc | 483 | if (r < 0) |
746cf898 SS |
484 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); |
485 | ||
486 | FOREACH_DEVICE(e, dev) { | |
487 | int battery_last_capacity, previous_discharge_rate = 0; | |
488 | const char *battery_name; | |
489 | usec_t suspend_interval; | |
490 | ||
491 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_NAME", &battery_name); | |
492 | if (r < 0) { | |
493 | log_device_debug_errno(dev, r, "Failed to read battery name, ignoring: %m"); | |
494 | continue; | |
495 | } | |
496 | ||
497 | battery_last_capacity = PTR_TO_CAPACITY(hashmap_get(last_capacity, battery_name)); | |
498 | if (battery_last_capacity <= 0) | |
499 | continue; | |
500 | ||
501 | r = get_battery_discharge_rate(dev, &previous_discharge_rate); | |
502 | if (r < 0) { | |
503 | log_device_debug_errno(dev, r, "Failed to get discharge rate, ignoring: %m"); | |
504 | continue; | |
505 | } | |
506 | ||
507 | if (previous_discharge_rate == 0) | |
508 | continue; | |
509 | ||
510 | if (battery_last_capacity * 2 <= previous_discharge_rate) { | |
511 | log_device_debug(dev, "Current battery capacity percentage too low compared to discharge rate"); | |
512 | continue; | |
513 | } | |
514 | suspend_interval = battery_last_capacity * USEC_PER_HOUR / previous_discharge_rate; | |
515 | ||
516 | total_suspend_interval = usec_add(total_suspend_interval, suspend_interval); | |
517 | } | |
518 | /* The previous discharge rate is stored in per hour basis so converted to minutes. | |
519 | * Subtracted 30 minutes from the result to keep a buffer of 30 minutes before battery gets critical */ | |
520 | total_suspend_interval = usec_sub_unsigned(total_suspend_interval, 30 * USEC_PER_MINUTE); | |
521 | if (total_suspend_interval == 0) | |
522 | return -ENOENT; | |
523 | ||
524 | *ret = total_suspend_interval; | |
91ea7ebc | 525 | |
91ea7ebc SS |
526 | return 0; |
527 | } | |
528 | ||
19adb8a3 | 529 | int can_sleep_state(char **types) { |
434fef6d | 530 | _cleanup_free_ char *text = NULL; |
19adb8a3 | 531 | int r; |
19adb8a3 ZJS |
532 | |
533 | if (strv_isempty(types)) | |
534 | return true; | |
535 | ||
536 | /* If /sys is read-only we cannot sleep */ | |
c0d8fbfa LP |
537 | if (access("/sys/power/state", W_OK) < 0) { |
538 | log_debug_errno(errno, "/sys/power/state is not writable, cannot sleep: %m"); | |
19adb8a3 | 539 | return false; |
c0d8fbfa | 540 | } |
19adb8a3 | 541 | |
434fef6d | 542 | r = read_one_line_file("/sys/power/state", &text); |
c0d8fbfa LP |
543 | if (r < 0) { |
544 | log_debug_errno(r, "Failed to read /sys/power/state, cannot sleep: %m"); | |
19adb8a3 | 545 | return false; |
c0d8fbfa | 546 | } |
19adb8a3 | 547 | |
434fef6d ZJS |
548 | const char *found; |
549 | r = string_contains_word_strv(text, NULL, types, &found); | |
550 | if (r < 0) | |
551 | return log_debug_errno(r, "Failed to parse /sys/power/state: %m"); | |
552 | if (r > 0) | |
553 | log_debug("Sleep mode \"%s\" is supported by the kernel.", found); | |
554 | else if (DEBUG_LOGGING) { | |
c550cb7f ZJS |
555 | _cleanup_free_ char *t = strv_join(types, "/"); |
556 | log_debug("Sleep mode %s not supported by the kernel, sorry.", strnull(t)); | |
557 | } | |
434fef6d | 558 | return r; |
19adb8a3 ZJS |
559 | } |
560 | ||
561 | int can_sleep_disk(char **types) { | |
434fef6d | 562 | _cleanup_free_ char *text = NULL; |
19adb8a3 | 563 | int r; |
19adb8a3 ZJS |
564 | |
565 | if (strv_isempty(types)) | |
566 | return true; | |
567 | ||
568 | /* If /sys is read-only we cannot sleep */ | |
7474f15b LP |
569 | if (access("/sys/power/disk", W_OK) < 0) { |
570 | log_debug_errno(errno, "/sys/power/disk is not writable: %m"); | |
19adb8a3 | 571 | return false; |
7474f15b | 572 | } |
19adb8a3 | 573 | |
434fef6d | 574 | r = read_one_line_file("/sys/power/disk", &text); |
7474f15b LP |
575 | if (r < 0) { |
576 | log_debug_errno(r, "Couldn't read /sys/power/disk: %m"); | |
19adb8a3 | 577 | return false; |
7474f15b | 578 | } |
19adb8a3 | 579 | |
434fef6d ZJS |
580 | for (const char *p = text;;) { |
581 | _cleanup_free_ char *word = NULL; | |
19adb8a3 | 582 | |
434fef6d ZJS |
583 | r = extract_first_word(&p, &word, NULL, 0); |
584 | if (r < 0) | |
585 | return log_debug_errno(r, "Failed to parse /sys/power/disk: %m"); | |
586 | if (r == 0) | |
587 | break; | |
19adb8a3 | 588 | |
434fef6d ZJS |
589 | char *s = word; |
590 | size_t l = strlen(s); | |
591 | if (s[0] == '[' && s[l-1] == ']') { | |
592 | s[l-1] = '\0'; | |
593 | s++; | |
594 | } | |
595 | ||
596 | if (strv_contains(types, s)) { | |
597 | log_debug("Disk sleep mode \"%s\" is supported by the kernel.", s); | |
598 | return true; | |
19adb8a3 ZJS |
599 | } |
600 | } | |
601 | ||
434fef6d ZJS |
602 | if (DEBUG_LOGGING) { |
603 | _cleanup_free_ char *t = strv_join(types, "/"); | |
604 | log_debug("Disk sleep mode %s not supported by the kernel, sorry.", strnull(t)); | |
605 | } | |
19adb8a3 ZJS |
606 | return false; |
607 | } | |
608 | ||
69ab8088 ZJS |
609 | #define HIBERNATION_SWAP_THRESHOLD 0.98 |
610 | ||
7bdf56a2 | 611 | SwapEntry* swap_entry_free(SwapEntry *se) { |
88bc86fc ZS |
612 | if (!se) |
613 | return NULL; | |
614 | ||
615 | free(se->device); | |
616 | free(se->type); | |
617 | ||
618 | return mfree(se); | |
619 | } | |
620 | ||
7bdf56a2 ZS |
621 | HibernateLocation* hibernate_location_free(HibernateLocation *hl) { |
622 | if (!hl) | |
623 | return NULL; | |
624 | ||
625 | swap_entry_free(hl->swap); | |
7bdf56a2 ZS |
626 | |
627 | return mfree(hl); | |
628 | } | |
629 | ||
52133271 | 630 | static int swap_device_to_device_id(const SwapEntry *swap, dev_t *ret_dev) { |
7bdf56a2 | 631 | struct stat sb; |
7bdf56a2 ZS |
632 | int r; |
633 | ||
634 | assert(swap); | |
635 | assert(swap->device); | |
636 | assert(swap->type); | |
637 | ||
e9f0c5d0 | 638 | r = stat(swap->device, &sb); |
7bdf56a2 | 639 | if (r < 0) |
6f9120ad | 640 | return -errno; |
7bdf56a2 | 641 | |
52133271 | 642 | if (streq(swap->type, "partition")) { |
e9f0c5d0 | 643 | if (!S_ISBLK(sb.st_mode)) |
52133271 | 644 | return -ENOTBLK; |
6f9120ad | 645 | |
e9f0c5d0 ZJS |
646 | *ret_dev = sb.st_rdev; |
647 | return 0; | |
6f9120ad | 648 | } |
7bdf56a2 | 649 | |
6f9120ad | 650 | return get_block_device(swap->device, ret_dev); |
7bdf56a2 ZS |
651 | } |
652 | ||
52133271 | 653 | /* |
162392b7 | 654 | * Attempt to calculate the swap file offset on supported filesystems. On unsupported |
8efc2c16 | 655 | * filesystems, a debug message is logged and ret_offset is set to UINT64_MAX. |
52133271 | 656 | */ |
7bdf56a2 ZS |
657 | static int calculate_swap_file_offset(const SwapEntry *swap, uint64_t *ret_offset) { |
658 | _cleanup_close_ int fd = -1; | |
659 | _cleanup_free_ struct fiemap *fiemap = NULL; | |
660 | struct stat sb; | |
65ddc2c5 | 661 | int r; |
7bdf56a2 ZS |
662 | |
663 | assert(swap); | |
664 | assert(swap->device); | |
665 | assert(streq(swap->type, "file")); | |
666 | ||
667 | fd = open(swap->device, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
e97c3691 | 668 | if (fd < 0) |
c02540dc | 669 | return log_debug_errno(errno, "Failed to open swap file %s to determine on-disk offset: %m", swap->device); |
7bdf56a2 | 670 | |
e97c3691 | 671 | if (fstat(fd, &sb) < 0) |
c02540dc | 672 | return log_debug_errno(errno, "Failed to stat %s: %m", swap->device); |
7bdf56a2 | 673 | |
65ddc2c5 ZJS |
674 | r = fd_is_fs_type(fd, BTRFS_SUPER_MAGIC); |
675 | if (r < 0) | |
676 | return log_debug_errno(r, "Error checking %s for Btrfs filesystem: %m", swap->device); | |
677 | if (r > 0) { | |
8efc2c16 ZJS |
678 | log_debug("%s: detection of swap file offset on Btrfs is not supported", swap->device); |
679 | *ret_offset = UINT64_MAX; | |
7bdf56a2 ZS |
680 | return 0; |
681 | } | |
682 | ||
683 | r = read_fiemap(fd, &fiemap); | |
684 | if (r < 0) | |
685 | return log_debug_errno(r, "Unable to read extent map for '%s': %m", swap->device); | |
686 | ||
687 | *ret_offset = fiemap->fm_extents[0].fe_physical / page_size(); | |
7bdf56a2 ZS |
688 | return 0; |
689 | } | |
88bc86fc | 690 | |
52133271 ZS |
691 | static int read_resume_files(dev_t *ret_resume, uint64_t *ret_resume_offset) { |
692 | _cleanup_free_ char *resume_str = NULL, *resume_offset_str = NULL; | |
7bdf56a2 | 693 | uint64_t resume_offset = 0; |
c02540dc | 694 | dev_t resume; |
7bdf56a2 ZS |
695 | int r; |
696 | ||
52133271 | 697 | r = read_one_line_file("/sys/power/resume", &resume_str); |
7bdf56a2 | 698 | if (r < 0) |
5021735f | 699 | return log_debug_errno(r, "Error reading /sys/power/resume: %m"); |
7bdf56a2 | 700 | |
7176f06c | 701 | r = parse_devnum(resume_str, &resume); |
52133271 ZS |
702 | if (r < 0) |
703 | return log_debug_errno(r, "Error parsing /sys/power/resume device: %s: %m", resume_str); | |
704 | ||
7bdf56a2 | 705 | r = read_one_line_file("/sys/power/resume_offset", &resume_offset_str); |
b72571e0 | 706 | if (r == -ENOENT) |
c02540dc | 707 | log_debug_errno(r, "Kernel does not support resume_offset; swap file offset detection will be skipped."); |
b72571e0 | 708 | else if (r < 0) |
5021735f | 709 | return log_debug_errno(r, "Error reading /sys/power/resume_offset: %m"); |
b72571e0 | 710 | else { |
7bdf56a2 ZS |
711 | r = safe_atou64(resume_offset_str, &resume_offset); |
712 | if (r < 0) | |
c02540dc | 713 | return log_debug_errno(r, "Failed to parse value in /sys/power/resume_offset \"%s\": %m", resume_offset_str); |
7bdf56a2 ZS |
714 | } |
715 | ||
8f817cb8 ZJS |
716 | if (resume_offset > 0 && resume == 0) |
717 | log_debug("Warning: found /sys/power/resume_offset==%" PRIu64 ", but /sys/power/resume unset. Misconfiguration?", | |
5021735f | 718 | resume_offset); |
7bdf56a2 | 719 | |
52133271 | 720 | *ret_resume = resume; |
7bdf56a2 ZS |
721 | *ret_resume_offset = resume_offset; |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
52133271 ZS |
726 | /* |
727 | * Determine if the HibernateLocation matches the resume= (device) and resume_offset= (file). | |
728 | */ | |
729 | static bool location_is_resume_device(const HibernateLocation *location, dev_t sys_resume, uint64_t sys_offset) { | |
730 | if (!location) | |
731 | return false; | |
732 | ||
8efc2c16 ZJS |
733 | return sys_resume > 0 && |
734 | sys_resume == location->devno && | |
735 | (sys_offset == location->offset || (sys_offset > 0 && location->offset == UINT64_MAX)); | |
7bdf56a2 ZS |
736 | } |
737 | ||
738 | /* | |
739 | * Attempt to find the hibernation location by parsing /proc/swaps, /sys/power/resume, and | |
740 | * /sys/power/resume_offset. | |
741 | * | |
742 | * Returns: | |
52133271 ZS |
743 | * 1 - Values are set in /sys/power/resume and /sys/power/resume_offset. |
744 | * ret_hibernate_location will represent matching /proc/swap entry if identified or NULL if not. | |
745 | * | |
746 | * 0 - No values are set in /sys/power/resume and /sys/power/resume_offset. | |
747 | ret_hibernate_location will represent the highest priority swap with most remaining space discovered in /proc/swaps. | |
748 | * | |
749 | * Negative value in the case of error. | |
7bdf56a2 ZS |
750 | */ |
751 | int find_hibernate_location(HibernateLocation **ret_hibernate_location) { | |
b72571e0 | 752 | _cleanup_fclose_ FILE *f = NULL; |
7bdf56a2 | 753 | _cleanup_(hibernate_location_freep) HibernateLocation *hibernate_location = NULL; |
aff81b18 | 754 | dev_t sys_resume = 0; /* Unnecessary initialization to appease gcc */ |
7bdf56a2 | 755 | uint64_t sys_offset = 0; |
8efc2c16 | 756 | bool resume_match = false; |
7bdf56a2 ZS |
757 | int r; |
758 | ||
759 | /* read the /sys/power/resume & /sys/power/resume_offset values */ | |
760 | r = read_resume_files(&sys_resume, &sys_offset); | |
761 | if (r < 0) | |
762 | return r; | |
9fb3675e | 763 | |
c8a202b7 | 764 | f = fopen("/proc/swaps", "re"); |
9fb3675e | 765 | if (!f) { |
c02540dc LP |
766 | log_debug_errno(errno, "Failed to open /proc/swaps: %m"); |
767 | return errno == ENOENT ? -EOPNOTSUPP : -errno; /* Convert swap not supported to a recognizable error */ | |
9fb3675e | 768 | } |
69ab8088 | 769 | |
9fb3675e | 770 | (void) fscanf(f, "%*s %*s %*s %*s %*s\n"); |
8efc2c16 | 771 | for (unsigned i = 1;; i++) { |
88bc86fc | 772 | _cleanup_(swap_entry_freep) SwapEntry *swap = NULL; |
7bdf56a2 | 773 | uint64_t swap_offset = 0; |
9fb3675e ZJS |
774 | int k; |
775 | ||
88bc86fc ZS |
776 | swap = new0(SwapEntry, 1); |
777 | if (!swap) | |
c02540dc | 778 | return -ENOMEM; |
88bc86fc | 779 | |
9fb3675e | 780 | k = fscanf(f, |
88bc86fc ZS |
781 | "%ms " /* device/file */ |
782 | "%ms " /* type of swap */ | |
783 | "%" PRIu64 /* swap size */ | |
784 | "%" PRIu64 /* used */ | |
785 | "%i\n", /* priority */ | |
786 | &swap->device, &swap->type, &swap->size, &swap->used, &swap->priority); | |
3dea6886 LP |
787 | if (k == EOF) |
788 | break; | |
88bc86fc | 789 | if (k != 5) { |
c02540dc | 790 | log_debug("Failed to parse /proc/swaps:%u, ignoring", i); |
9fb3675e ZJS |
791 | continue; |
792 | } | |
793 | ||
88bc86fc | 794 | if (streq(swap->type, "file")) { |
88bc86fc | 795 | if (endswith(swap->device, "\\040(deleted)")) { |
c02540dc | 796 | log_debug("Ignoring deleted swap file '%s'.", swap->device); |
411ae92b AJ |
797 | continue; |
798 | } | |
799 | ||
7bdf56a2 ZS |
800 | r = calculate_swap_file_offset(swap, &swap_offset); |
801 | if (r < 0) | |
802 | return r; | |
52133271 | 803 | |
88bc86fc | 804 | } else if (streq(swap->type, "partition")) { |
411ae92b | 805 | const char *fn; |
3dea6886 | 806 | |
88bc86fc | 807 | fn = path_startswith(swap->device, "/dev/"); |
411ae92b | 808 | if (fn && startswith(fn, "zram")) { |
8efc2c16 | 809 | log_debug("%s: ignoring zram swap", swap->device); |
411ae92b AJ |
810 | continue; |
811 | } | |
8efc2c16 | 812 | |
7bdf56a2 | 813 | } else { |
8efc2c16 | 814 | log_debug("%s: swap type %s is unsupported for hibernation, ignoring", swap->device, swap->type); |
7bdf56a2 | 815 | continue; |
9fb3675e | 816 | } |
3dea6886 | 817 | |
7bdf56a2 | 818 | /* prefer resume device or highest priority swap with most remaining space */ |
936a7cb6 E |
819 | if (sys_resume == 0) { |
820 | if (hibernate_location && swap->priority < hibernate_location->swap->priority) { | |
821 | log_debug("%s: ignoring device with lower priority", swap->device); | |
822 | continue; | |
823 | } | |
824 | if (hibernate_location && | |
825 | (swap->priority == hibernate_location->swap->priority | |
826 | && swap->size - swap->used < hibernate_location->swap->size - hibernate_location->swap->used)) { | |
827 | log_debug("%s: ignoring device with lower usable space", swap->device); | |
828 | continue; | |
829 | } | |
8efc2c16 | 830 | } |
7bdf56a2 | 831 | |
8efc2c16 ZJS |
832 | dev_t swap_device; |
833 | r = swap_device_to_device_id(swap, &swap_device); | |
834 | if (r < 0) | |
c02540dc | 835 | return log_debug_errno(r, "%s: failed to query device number: %m", swap->device); |
d161680e LP |
836 | if (swap_device == 0) |
837 | return log_debug_errno(SYNTHETIC_ERRNO(ENODEV), "%s: not backed by block device.", swap->device); | |
7bdf56a2 | 838 | |
8efc2c16 ZJS |
839 | hibernate_location = hibernate_location_free(hibernate_location); |
840 | hibernate_location = new(HibernateLocation, 1); | |
841 | if (!hibernate_location) | |
c02540dc | 842 | return -ENOMEM; |
7bdf56a2 | 843 | |
8efc2c16 ZJS |
844 | *hibernate_location = (HibernateLocation) { |
845 | .devno = swap_device, | |
846 | .offset = swap_offset, | |
847 | .swap = TAKE_PTR(swap), | |
848 | }; | |
7bdf56a2 | 849 | |
8efc2c16 ZJS |
850 | /* if the swap is the resume device, stop the loop */ |
851 | if (location_is_resume_device(hibernate_location, sys_resume, sys_offset)) { | |
852 | log_debug("%s: device matches configured resume settings.", hibernate_location->swap->device); | |
853 | resume_match = true; | |
854 | break; | |
88bc86fc | 855 | } |
8efc2c16 ZJS |
856 | |
857 | log_debug("%s: is a candidate device.", hibernate_location->swap->device); | |
69ab8088 ZJS |
858 | } |
859 | ||
8efc2c16 ZJS |
860 | /* We found nothing at all */ |
861 | if (!hibernate_location) | |
862 | return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), | |
863 | "No possible swap partitions or files suitable for hibernation were found in /proc/swaps."); | |
52133271 | 864 | |
8efc2c16 ZJS |
865 | /* resume= is set but a matching /proc/swaps entry was not found */ |
866 | if (sys_resume != 0 && !resume_match) | |
867 | return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), | |
868 | "No swap partitions or files matching resume config were found in /proc/swaps."); | |
52133271 | 869 | |
8efc2c16 ZJS |
870 | if (hibernate_location->offset == UINT64_MAX) { |
871 | if (sys_offset == 0) | |
872 | return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), "Offset detection failed and /sys/power/resume_offset is not set."); | |
7bdf56a2 | 873 | |
8efc2c16 ZJS |
874 | hibernate_location->offset = sys_offset; |
875 | } | |
7bdf56a2 | 876 | |
52133271 ZS |
877 | if (resume_match) |
878 | log_debug("Hibernation will attempt to use swap entry with path: %s, device: %u:%u, offset: %" PRIu64 ", priority: %i", | |
879 | hibernate_location->swap->device, major(hibernate_location->devno), minor(hibernate_location->devno), | |
880 | hibernate_location->offset, hibernate_location->swap->priority); | |
881 | else | |
8efc2c16 | 882 | log_debug("/sys/power/resume is not configured; attempting to hibernate with path: %s, device: %u:%u, offset: %" PRIu64 ", priority: %i", |
52133271 ZS |
883 | hibernate_location->swap->device, major(hibernate_location->devno), minor(hibernate_location->devno), |
884 | hibernate_location->offset, hibernate_location->swap->priority); | |
88bc86fc | 885 | |
7bdf56a2 | 886 | *ret_hibernate_location = TAKE_PTR(hibernate_location); |
88bc86fc | 887 | |
52133271 | 888 | if (resume_match) |
7bdf56a2 | 889 | return 1; |
88bc86fc ZS |
890 | |
891 | return 0; | |
9fb3675e ZJS |
892 | } |
893 | ||
4638cd39 | 894 | static bool enough_swap_for_hibernation(void) { |
9fb3675e | 895 | _cleanup_free_ char *active = NULL; |
7bdf56a2 | 896 | _cleanup_(hibernate_location_freep) HibernateLocation *hibernate_location = NULL; |
39883f62 | 897 | unsigned long long act = 0; |
9fb3675e ZJS |
898 | int r; |
899 | ||
490d20e6 VV |
900 | if (getenv_bool("SYSTEMD_BYPASS_HIBERNATION_MEMORY_CHECK") > 0) |
901 | return true; | |
902 | ||
7bdf56a2 | 903 | r = find_hibernate_location(&hibernate_location); |
9fb3675e | 904 | if (r < 0) |
69ab8088 | 905 | return false; |
69ab8088 | 906 | |
52133271 ZS |
907 | /* If /sys/power/{resume,resume_offset} is configured but a matching entry |
908 | * could not be identified in /proc/swaps, user is likely using Btrfs with a swapfile; | |
909 | * return true and let the system attempt hibernation. | |
910 | */ | |
911 | if (r > 0 && !hibernate_location) { | |
912 | log_debug("Unable to determine remaining swap space; hibernation may fail"); | |
913 | return true; | |
914 | } | |
915 | ||
916 | if (!hibernate_location) | |
917 | return false; | |
918 | ||
c4cd1d4d | 919 | r = get_proc_field("/proc/meminfo", "Active(anon)", WHITESPACE, &active); |
69ab8088 | 920 | if (r < 0) { |
904865b8 | 921 | log_debug_errno(r, "Failed to retrieve Active(anon) from /proc/meminfo: %m"); |
69ab8088 ZJS |
922 | return false; |
923 | } | |
924 | ||
925 | r = safe_atollu(active, &act); | |
926 | if (r < 0) { | |
904865b8 | 927 | log_debug_errno(r, "Failed to parse Active(anon) from /proc/meminfo: %s: %m", active); |
69ab8088 ZJS |
928 | return false; |
929 | } | |
930 | ||
7bdf56a2 | 931 | r = act <= (hibernate_location->swap->size - hibernate_location->swap->used) * HIBERNATION_SWAP_THRESHOLD; |
88bc86fc | 932 | log_debug("%s swap for hibernation, Active(anon)=%llu kB, size=%" PRIu64 " kB, used=%" PRIu64 " kB, threshold=%.2g%%", |
7bdf56a2 | 933 | r ? "Enough" : "Not enough", act, hibernate_location->swap->size, hibernate_location->swap->used, 100*HIBERNATION_SWAP_THRESHOLD); |
69ab8088 ZJS |
934 | |
935 | return r; | |
936 | } | |
937 | ||
17c40b3a ML |
938 | int read_fiemap(int fd, struct fiemap **ret) { |
939 | _cleanup_free_ struct fiemap *fiemap = NULL, *result_fiemap = NULL; | |
17c40b3a ML |
940 | struct stat statinfo; |
941 | uint32_t result_extents = 0; | |
942 | uint64_t fiemap_start = 0, fiemap_length; | |
6524f1a8 | 943 | const size_t n_extra = DIV_ROUND_UP(sizeof(struct fiemap), sizeof(struct fiemap_extent)); |
17c40b3a ML |
944 | |
945 | if (fstat(fd, &statinfo) < 0) | |
946 | return log_debug_errno(errno, "Cannot determine file size: %m"); | |
947 | if (!S_ISREG(statinfo.st_mode)) | |
948 | return -ENOTTY; | |
949 | fiemap_length = statinfo.st_size; | |
950 | ||
6524f1a8 ZJS |
951 | /* Zero this out in case we run on a file with no extents */ |
952 | fiemap = calloc(n_extra, sizeof(struct fiemap_extent)); | |
17c40b3a ML |
953 | if (!fiemap) |
954 | return -ENOMEM; | |
955 | ||
6524f1a8 | 956 | result_fiemap = malloc_multiply(n_extra, sizeof(struct fiemap_extent)); |
17c40b3a ML |
957 | if (!result_fiemap) |
958 | return -ENOMEM; | |
959 | ||
960 | /* XFS filesystem has incorrect implementation of fiemap ioctl and | |
961 | * returns extents for only one block-group at a time, so we need | |
962 | * to handle it manually, starting the next fiemap call from the end | |
963 | * of the last extent | |
964 | */ | |
965 | while (fiemap_start < fiemap_length) { | |
966 | *fiemap = (struct fiemap) { | |
967 | .fm_start = fiemap_start, | |
968 | .fm_length = fiemap_length, | |
969 | .fm_flags = FIEMAP_FLAG_SYNC, | |
970 | }; | |
971 | ||
972 | /* Find out how many extents there are */ | |
973 | if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0) | |
974 | return log_debug_errno(errno, "Failed to read extents: %m"); | |
975 | ||
976 | /* Nothing to process */ | |
977 | if (fiemap->fm_mapped_extents == 0) | |
978 | break; | |
979 | ||
6524f1a8 ZJS |
980 | /* Resize fiemap to allow us to read in the extents, result fiemap has to hold all |
981 | * the extents for the whole file. Add space for the initial struct fiemap. */ | |
319a4f4b | 982 | if (!greedy_realloc0((void**) &fiemap, n_extra + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent))) |
17c40b3a ML |
983 | return -ENOMEM; |
984 | ||
985 | fiemap->fm_extent_count = fiemap->fm_mapped_extents; | |
986 | fiemap->fm_mapped_extents = 0; | |
987 | ||
988 | if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0) | |
989 | return log_debug_errno(errno, "Failed to read extents: %m"); | |
990 | ||
6524f1a8 | 991 | /* Resize result_fiemap to allow us to copy in the extents */ |
319a4f4b | 992 | if (!greedy_realloc((void**) &result_fiemap, |
6524f1a8 | 993 | n_extra + result_extents + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent))) |
17c40b3a ML |
994 | return -ENOMEM; |
995 | ||
996 | memcpy(result_fiemap->fm_extents + result_extents, | |
997 | fiemap->fm_extents, | |
998 | sizeof(struct fiemap_extent) * fiemap->fm_mapped_extents); | |
999 | ||
1000 | result_extents += fiemap->fm_mapped_extents; | |
1001 | ||
1002 | /* Highly unlikely that it is zero */ | |
6524f1a8 | 1003 | if (_likely_(fiemap->fm_mapped_extents > 0)) { |
17c40b3a ML |
1004 | uint32_t i = fiemap->fm_mapped_extents - 1; |
1005 | ||
1006 | fiemap_start = fiemap->fm_extents[i].fe_logical + | |
1007 | fiemap->fm_extents[i].fe_length; | |
1008 | ||
1009 | if (fiemap->fm_extents[i].fe_flags & FIEMAP_EXTENT_LAST) | |
1010 | break; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | memcpy(result_fiemap, fiemap, sizeof(struct fiemap)); | |
1015 | result_fiemap->fm_mapped_extents = result_extents; | |
1016 | *ret = TAKE_PTR(result_fiemap); | |
1017 | return 0; | |
1018 | } | |
1019 | ||
c8cd8ca3 | 1020 | static int can_sleep_internal(const SleepConfig *sleep_config, SleepOperation operation, bool check_allowed); |
e8f1d00d | 1021 | |
28ca9c24 | 1022 | static bool can_s2h(const SleepConfig *sleep_config) { |
c8cd8ca3 LP |
1023 | |
1024 | static const SleepOperation operations[] = { | |
1025 | SLEEP_SUSPEND, | |
1026 | SLEEP_HIBERNATE, | |
1027 | }; | |
1028 | ||
c58493c0 ML |
1029 | int r; |
1030 | ||
1bbbefe7 | 1031 | if (!clock_supported(CLOCK_BOOTTIME_ALARM)) { |
c732e879 | 1032 | log_debug("CLOCK_BOOTTIME_ALARM is not supported."); |
c58493c0 ML |
1033 | return false; |
1034 | } | |
1035 | ||
c8cd8ca3 LP |
1036 | for (size_t i = 0; i < ELEMENTSOF(operations); i++) { |
1037 | r = can_sleep_internal(sleep_config, operations[i], false); | |
887b2019 | 1038 | if (IN_SET(r, 0, -ENOSPC)) { |
c8cd8ca3 | 1039 | log_debug("Unable to %s system.", sleep_operation_to_string(operations[i])); |
c863dc05 ZJS |
1040 | return false; |
1041 | } | |
b71c9758 | 1042 | if (r < 0) |
c8cd8ca3 | 1043 | return log_debug_errno(r, "Failed to check if %s is possible: %m", sleep_operation_to_string(operations[i])); |
c58493c0 ML |
1044 | } |
1045 | ||
1046 | return true; | |
1047 | } | |
1048 | ||
c8cd8ca3 LP |
1049 | static int can_sleep_internal( |
1050 | const SleepConfig *sleep_config, | |
1051 | SleepOperation operation, | |
1052 | bool check_allowed) { | |
c58493c0 | 1053 | |
c8cd8ca3 LP |
1054 | assert(operation >= 0); |
1055 | assert(operation < _SLEEP_OPERATION_MAX); | |
19adb8a3 | 1056 | |
c8cd8ca3 LP |
1057 | if (check_allowed && !sleep_config->allow[operation]) { |
1058 | log_debug("Sleep mode \"%s\" is disabled by configuration.", sleep_operation_to_string(operation)); | |
e8f1d00d ZJS |
1059 | return false; |
1060 | } | |
1061 | ||
c8cd8ca3 | 1062 | if (operation == SLEEP_SUSPEND_THEN_HIBERNATE) |
28ca9c24 | 1063 | return can_s2h(sleep_config); |
e8f1d00d | 1064 | |
61dc8481 LP |
1065 | if (can_sleep_state(sleep_config->states[operation]) <= 0 || |
1066 | can_sleep_disk(sleep_config->modes[operation]) <= 0) | |
69ab8088 ZJS |
1067 | return false; |
1068 | ||
c8cd8ca3 | 1069 | if (operation == SLEEP_SUSPEND) |
b71c9758 ZJS |
1070 | return true; |
1071 | ||
4638cd39 | 1072 | if (!enough_swap_for_hibernation()) |
b71c9758 ZJS |
1073 | return -ENOSPC; |
1074 | ||
1075 | return true; | |
19adb8a3 | 1076 | } |
e8f1d00d | 1077 | |
c8cd8ca3 | 1078 | int can_sleep(SleepOperation operation) { |
28ca9c24 ZS |
1079 | _cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL; |
1080 | int r; | |
1081 | ||
1082 | r = parse_sleep_config(&sleep_config); | |
1083 | if (r < 0) | |
1084 | return r; | |
1085 | ||
c8cd8ca3 | 1086 | return can_sleep_internal(sleep_config, operation, true); |
28ca9c24 ZS |
1087 | } |
1088 | ||
1326de01 | 1089 | SleepConfig* free_sleep_config(SleepConfig *sc) { |
28ca9c24 | 1090 | if (!sc) |
1326de01 | 1091 | return NULL; |
28ca9c24 | 1092 | |
c8cd8ca3 LP |
1093 | for (SleepOperation i = 0; i < _SLEEP_OPERATION_MAX; i++) { |
1094 | strv_free(sc->modes[i]); | |
1095 | strv_free(sc->states[i]); | |
1096 | } | |
28ca9c24 | 1097 | |
1326de01 | 1098 | return mfree(sc); |
e8f1d00d | 1099 | } |
be2a4b0d LP |
1100 | |
1101 | static const char* const sleep_operation_table[_SLEEP_OPERATION_MAX] = { | |
1102 | [SLEEP_SUSPEND] = "suspend", | |
1103 | [SLEEP_HIBERNATE] = "hibernate", | |
1104 | [SLEEP_HYBRID_SLEEP] = "hybrid-sleep", | |
1105 | [SLEEP_SUSPEND_THEN_HIBERNATE] = "suspend-then-hibernate", | |
1106 | }; | |
1107 | ||
1108 | DEFINE_STRING_TABLE_LOOKUP(sleep_operation, SleepOperation); |