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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" |
28db6fbf | 24 | #include "constants.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) | |
1afe3d71 | 48 | #define SYS_ENTRY_RAW_FILE_TYPE1 "/sys/firmware/dmi/entries/1-0/raw" |
91ea7ebc | 49 | |
746cf898 SS |
50 | static void *CAPACITY_TO_PTR(int capacity) { |
51 | assert(capacity >= 0); | |
52 | assert(capacity <= 100); | |
53 | return INT_TO_PTR(capacity + 1); | |
54 | } | |
55 | ||
56 | static int PTR_TO_CAPACITY(void *p) { | |
57 | int capacity = PTR_TO_INT(p) - 1; | |
58 | assert(capacity >= 0); | |
59 | assert(capacity <= 100); | |
60 | return capacity; | |
61 | } | |
62 | ||
28ca9c24 | 63 | int parse_sleep_config(SleepConfig **ret_sleep_config) { |
c2b2df60 | 64 | _cleanup_(free_sleep_configp) SleepConfig *sc = NULL; |
e8f1d00d ZJS |
65 | int allow_suspend = -1, allow_hibernate = -1, |
66 | allow_s2h = -1, allow_hybrid_sleep = -1; | |
28ca9c24 ZS |
67 | |
68 | sc = new0(SleepConfig, 1); | |
69 | if (!sc) | |
70 | return log_oom(); | |
19adb8a3 ZJS |
71 | |
72 | const ConfigTableItem items[] = { | |
c8cd8ca3 LP |
73 | { "Sleep", "AllowSuspend", config_parse_tristate, 0, &allow_suspend }, |
74 | { "Sleep", "AllowHibernation", config_parse_tristate, 0, &allow_hibernate }, | |
75 | { "Sleep", "AllowSuspendThenHibernate", config_parse_tristate, 0, &allow_s2h }, | |
76 | { "Sleep", "AllowHybridSleep", config_parse_tristate, 0, &allow_hybrid_sleep }, | |
77 | ||
78 | { "Sleep", "SuspendMode", config_parse_strv, 0, sc->modes + SLEEP_SUSPEND }, | |
79 | { "Sleep", "SuspendState", config_parse_strv, 0, sc->states + SLEEP_SUSPEND }, | |
80 | { "Sleep", "HibernateMode", config_parse_strv, 0, sc->modes + SLEEP_HIBERNATE }, | |
81 | { "Sleep", "HibernateState", config_parse_strv, 0, sc->states + SLEEP_HIBERNATE }, | |
82 | { "Sleep", "HybridSleepMode", config_parse_strv, 0, sc->modes + SLEEP_HYBRID_SLEEP }, | |
83 | { "Sleep", "HybridSleepState", config_parse_strv, 0, sc->states + SLEEP_HYBRID_SLEEP }, | |
84 | ||
85 | { "Sleep", "HibernateDelaySec", config_parse_sec, 0, &sc->hibernate_delay_sec }, | |
34c10968 LP |
86 | {} |
87 | }; | |
19adb8a3 | 88 | |
4f9ff96a LP |
89 | (void) config_parse_many_nulstr( |
90 | PKGSYSCONFDIR "/sleep.conf", | |
91 | CONF_PATHS_NULSTR("systemd/sleep.conf.d"), | |
92 | "Sleep\0", | |
93 | config_item_table_lookup, items, | |
94 | CONFIG_PARSE_WARN, | |
95 | NULL, | |
96 | NULL); | |
19adb8a3 | 97 | |
28ca9c24 | 98 | /* use default values unless set */ |
c8cd8ca3 LP |
99 | sc->allow[SLEEP_SUSPEND] = allow_suspend != 0; |
100 | sc->allow[SLEEP_HIBERNATE] = allow_hibernate != 0; | |
101 | sc->allow[SLEEP_HYBRID_SLEEP] = allow_hybrid_sleep >= 0 ? allow_hybrid_sleep | |
7874583d | 102 | : (allow_suspend != 0 && allow_hibernate != 0); |
c8cd8ca3 | 103 | sc->allow[SLEEP_SUSPEND_THEN_HIBERNATE] = allow_s2h >= 0 ? allow_s2h |
7874583d | 104 | : (allow_suspend != 0 && allow_hibernate != 0); |
28ca9c24 | 105 | |
c8cd8ca3 LP |
106 | if (!sc->states[SLEEP_SUSPEND]) |
107 | sc->states[SLEEP_SUSPEND] = strv_new("mem", "standby", "freeze"); | |
108 | if (!sc->modes[SLEEP_HIBERNATE]) | |
109 | sc->modes[SLEEP_HIBERNATE] = strv_new("platform", "shutdown"); | |
110 | if (!sc->states[SLEEP_HIBERNATE]) | |
111 | sc->states[SLEEP_HIBERNATE] = strv_new("disk"); | |
112 | if (!sc->modes[SLEEP_HYBRID_SLEEP]) | |
113 | sc->modes[SLEEP_HYBRID_SLEEP] = strv_new("suspend", "platform", "shutdown"); | |
114 | if (!sc->states[SLEEP_HYBRID_SLEEP]) | |
115 | sc->states[SLEEP_HYBRID_SLEEP] = strv_new("disk"); | |
28ca9c24 | 116 | if (sc->hibernate_delay_sec == 0) |
a077755a | 117 | sc->hibernate_delay_sec = 2 * USEC_PER_HOUR; |
28ca9c24 ZS |
118 | |
119 | /* ensure values set for all required fields */ | |
c8cd8ca3 LP |
120 | if (!sc->states[SLEEP_SUSPEND] || !sc->modes[SLEEP_HIBERNATE] |
121 | || !sc->states[SLEEP_HIBERNATE] || !sc->modes[SLEEP_HYBRID_SLEEP] || !sc->states[SLEEP_HYBRID_SLEEP]) | |
19adb8a3 | 122 | return log_oom(); |
19adb8a3 | 123 | |
28ca9c24 | 124 | *ret_sleep_config = TAKE_PTR(sc); |
c58493c0 | 125 | |
19adb8a3 ZJS |
126 | return 0; |
127 | } | |
128 | ||
746cf898 SS |
129 | /* Get the list of batteries */ |
130 | static int battery_enumerator_new(sd_device_enumerator **ret) { | |
131 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
96d662fa SS |
132 | int r; |
133 | ||
746cf898 | 134 | assert(ret); |
96d662fa | 135 | |
746cf898 SS |
136 | r = sd_device_enumerator_new(&e); |
137 | if (r < 0) | |
138 | return r; | |
139 | ||
140 | r = sd_device_enumerator_add_match_subsystem(e, "power_supply", /* match= */ true); | |
141 | if (r < 0) | |
142 | return r; | |
143 | ||
144 | r = sd_device_enumerator_add_match_property(e, "POWER_SUPPLY_TYPE", "Battery"); | |
96d662fa | 145 | if (r < 0) |
746cf898 SS |
146 | return r; |
147 | ||
148 | *ret = TAKE_PTR(e); | |
96d662fa | 149 | |
746cf898 SS |
150 | return 0; |
151 | } | |
152 | ||
153 | static int get_capacity_by_name(Hashmap *capacities_by_name, const char *name) { | |
154 | void *p; | |
155 | ||
156 | assert(capacities_by_name); | |
157 | assert(name); | |
158 | ||
159 | p = hashmap_get(capacities_by_name, name); | |
160 | if (!p) | |
161 | return -ENOENT; | |
162 | ||
163 | return PTR_TO_CAPACITY(p); | |
96d662fa SS |
164 | } |
165 | ||
166 | /* Battery percentage capacity fetched from capacity file and if in range 0-100 then returned */ | |
746cf898 SS |
167 | static int read_battery_capacity_percentage(sd_device *dev) { |
168 | const char *power_supply_capacity; | |
96d662fa SS |
169 | int battery_capacity, r; |
170 | ||
746cf898 SS |
171 | assert(dev); |
172 | ||
173 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_CAPACITY", &power_supply_capacity); | |
96d662fa | 174 | if (r < 0) |
746cf898 | 175 | return log_device_debug_errno(dev, r, "Failed to read battery capacity: %m"); |
96d662fa | 176 | |
746cf898 | 177 | r = safe_atoi(power_supply_capacity, &battery_capacity); |
96d662fa | 178 | if (r < 0) |
746cf898 | 179 | return log_device_debug_errno(dev, r, "Failed to parse battery capacity: %m"); |
96d662fa SS |
180 | |
181 | if (battery_capacity < 0 || battery_capacity > 100) | |
746cf898 | 182 | return log_device_debug_errno(dev, SYNTHETIC_ERRNO(ERANGE), "Invalid battery capacity"); |
96d662fa SS |
183 | |
184 | return battery_capacity; | |
185 | } | |
186 | ||
746cf898 SS |
187 | /* If battery percentage capacity is less than equal to 5% return success */ |
188 | int battery_is_low(void) { | |
189 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
190 | sd_device *dev; | |
191 | int r; | |
192 | ||
193 | /* We have not used battery capacity_level since value is set to full | |
194 | * or Normal in case acpi is not working properly. In case of no battery | |
195 | * 0 will be returned and system will be suspended for 1st cycle then hibernated */ | |
196 | ||
197 | r = battery_enumerator_new(&e); | |
198 | if (r < 0) | |
199 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); | |
200 | ||
201 | FOREACH_DEVICE(e, dev) { | |
202 | r = read_battery_capacity_percentage(dev); | |
203 | if (r < 0) { | |
204 | log_device_debug_errno(dev, r, "Failed to get battery capacity, ignoring: %m"); | |
205 | continue; | |
206 | } | |
207 | if (r > BATTERY_LOW_CAPACITY_LEVEL) | |
208 | return false; | |
209 | } | |
210 | ||
211 | return true; | |
212 | } | |
213 | ||
214 | /* Store current capacity of each battery before suspension and timestamp */ | |
215 | int fetch_batteries_capacity_by_name(Hashmap **ret) { | |
216 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
217 | _cleanup_(hashmap_freep) Hashmap *batteries_capacity_by_name = NULL; | |
218 | sd_device *dev; | |
91ea7ebc SS |
219 | int r; |
220 | ||
91ea7ebc SS |
221 | assert(ret); |
222 | ||
746cf898 SS |
223 | batteries_capacity_by_name = hashmap_new(&string_hash_ops_free); |
224 | if (!batteries_capacity_by_name) | |
225 | return log_oom_debug(); | |
226 | ||
227 | r = battery_enumerator_new(&e); | |
228 | if (r < 0) | |
229 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); | |
230 | ||
231 | FOREACH_DEVICE(e, dev) { | |
232 | _cleanup_free_ char *battery_name_copy = NULL; | |
233 | const char *battery_name; | |
234 | int battery_capacity; | |
235 | ||
236 | battery_capacity = r = read_battery_capacity_percentage(dev); | |
237 | if (r < 0) { | |
238 | log_device_debug_errno(dev, r, "Failed to get battery capacity, ignoring: %m"); | |
239 | continue; | |
240 | } | |
241 | ||
242 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_NAME", &battery_name); | |
243 | if (r < 0) { | |
244 | log_device_debug_errno(dev, r, "Failed to read battery name, ignoring: %m"); | |
245 | continue; | |
246 | } | |
247 | ||
248 | battery_name_copy = strdup(battery_name); | |
249 | if (!battery_name_copy) | |
250 | return log_oom_debug(); | |
251 | ||
252 | r = hashmap_put(batteries_capacity_by_name, battery_name_copy, CAPACITY_TO_PTR(battery_capacity)); | |
253 | if (r < 0) | |
254 | return log_device_debug_errno(dev, r, "Failed to store battery capacity: %m"); | |
255 | ||
256 | TAKE_PTR(battery_name_copy); | |
257 | } | |
258 | ||
259 | *ret = TAKE_PTR(batteries_capacity_by_name); | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | /* Read file path and return hash of value in that file */ | |
265 | static int get_battery_identifier(sd_device *dev, const char *property, struct siphash *state) { | |
266 | const char *x; | |
267 | int r; | |
268 | ||
269 | assert(dev); | |
270 | assert(property); | |
271 | assert(state); | |
272 | ||
273 | r = sd_device_get_property_value(dev, property, &x); | |
91ea7ebc | 274 | if (r == -ENOENT) |
746cf898 | 275 | log_device_debug_errno(dev, r, "battery device property %s is unavailable, ignoring: %m", property); |
91ea7ebc | 276 | else if (r < 0) |
746cf898 SS |
277 | return log_device_debug_errno(dev, r, "Failed to read battery device property %s: %m", property); |
278 | else if (isempty(x)) | |
279 | log_device_debug(dev, "battery device property '%s' is null.", property); | |
91ea7ebc | 280 | else |
746cf898 | 281 | siphash24_compress_string(x, state); |
91ea7ebc SS |
282 | |
283 | return 0; | |
284 | } | |
285 | ||
286 | /* Read system and battery identifier from specific location and generate hash of it */ | |
746cf898 | 287 | static int get_system_battery_identifier_hash(sd_device *dev, uint64_t *ret) { |
91ea7ebc SS |
288 | struct siphash state; |
289 | sd_id128_t machine_id, product_id; | |
290 | int r; | |
291 | ||
746cf898 SS |
292 | assert(ret); |
293 | assert(dev); | |
91ea7ebc SS |
294 | |
295 | siphash24_init(&state, BATTERY_DISCHARGE_RATE_HASH_KEY.bytes); | |
746cf898 SS |
296 | |
297 | get_battery_identifier(dev, "POWER_SUPPLY_MANUFACTURER", &state); | |
298 | get_battery_identifier(dev, "POWER_SUPPLY_MODEL_NAME", &state); | |
299 | get_battery_identifier(dev, "POWER_SUPPLY_SERIAL_NUMBER", &state); | |
91ea7ebc SS |
300 | |
301 | r = sd_id128_get_machine(&machine_id); | |
302 | if (r == -ENOENT) | |
303 | log_debug_errno(r, "machine ID is unavailable: %m"); | |
304 | else if (r < 0) | |
305 | return log_debug_errno(r, "Failed to get machine ID: %m"); | |
306 | else | |
307 | siphash24_compress(&machine_id, sizeof(sd_id128_t), &state); | |
308 | ||
309 | r = id128_get_product(&product_id); | |
310 | if (r == -ENOENT) | |
311 | log_debug_errno(r, "product_id does not exist: %m"); | |
312 | else if (r < 0) | |
313 | return log_debug_errno(r, "Failed to get product ID: %m"); | |
314 | else | |
315 | siphash24_compress(&product_id, sizeof(sd_id128_t), &state); | |
316 | ||
746cf898 | 317 | *ret = siphash24_finalize(&state); |
91ea7ebc SS |
318 | |
319 | return 0; | |
320 | } | |
321 | ||
322 | /* battery percentage discharge rate per hour is in range 1-199 then return success */ | |
323 | static bool battery_discharge_rate_is_valid(int battery_discharge_rate) { | |
324 | return battery_discharge_rate > 0 && battery_discharge_rate < 200; | |
325 | } | |
326 | ||
327 | /* Battery percentage discharge rate per hour is read from specific file. It is stored along with system | |
328 | * and battery identifier hash to maintain the integrity of discharge rate value */ | |
746cf898 SS |
329 | static int get_battery_discharge_rate(sd_device *dev, int *ret) { |
330 | _cleanup_fclose_ FILE *f = NULL; | |
331 | uint64_t current_hash_id; | |
91ea7ebc | 332 | const char *p; |
746cf898 | 333 | int r; |
91ea7ebc | 334 | |
746cf898 SS |
335 | assert(dev); |
336 | assert(ret); | |
91ea7ebc | 337 | |
746cf898 SS |
338 | f = fopen(DISCHARGE_RATE_FILEPATH, "re"); |
339 | if (!f) | |
340 | return log_debug_errno(errno, "Failed to read discharge rate from " DISCHARGE_RATE_FILEPATH ": %m"); | |
91ea7ebc | 341 | |
746cf898 | 342 | r = get_system_battery_identifier_hash(dev, ¤t_hash_id); |
91ea7ebc | 343 | if (r < 0) |
746cf898 SS |
344 | return log_device_debug_errno(dev, r, "Failed to generate system battery identifier hash: %m"); |
345 | ||
346 | for (;;) { | |
347 | _cleanup_free_ char *stored_hash_id = NULL, *stored_discharge_rate = NULL, *line = NULL; | |
348 | uint64_t hash_id; | |
349 | int discharge_rate; | |
350 | ||
351 | r = read_line(f, LONG_LINE_MAX, &line); | |
352 | if (r < 0) | |
353 | return log_debug_errno(r, "Failed to read discharge rate from " DISCHARGE_RATE_FILEPATH ": %m"); | |
354 | if (r == 0) | |
355 | break; | |
356 | ||
357 | p = line; | |
358 | r = extract_many_words(&p, NULL, 0, &stored_hash_id, &stored_discharge_rate, NULL); | |
359 | if (r < 0) | |
360 | return log_debug_errno(r, "Failed to parse hash_id and discharge_rate read from " DISCHARGE_RATE_FILEPATH ": %m"); | |
361 | if (r != 2) | |
362 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid number of items fetched from " DISCHARGE_RATE_FILEPATH); | |
363 | ||
364 | r = safe_atou64(stored_hash_id, &hash_id); | |
365 | if (r < 0) | |
366 | return log_debug_errno(r, "Failed to parse hash ID read from " DISCHARGE_RATE_FILEPATH " location: %m"); | |
367 | ||
368 | if (current_hash_id != hash_id) | |
369 | /* matching device not found, move to next line */ | |
370 | continue; | |
371 | ||
372 | r = safe_atoi(stored_discharge_rate, &discharge_rate); | |
373 | if (r < 0) | |
374 | return log_device_debug_errno(dev, r, "Failed to parse discharge rate read from " DISCHARGE_RATE_FILEPATH ": %m"); | |
375 | ||
376 | if (!battery_discharge_rate_is_valid(discharge_rate)) | |
377 | return log_device_debug_errno(dev, SYNTHETIC_ERRNO(ERANGE), "Invalid battery discharge percentage rate per hour: %m"); | |
378 | ||
379 | *ret = discharge_rate; | |
380 | return 0; /* matching device found, exit iteration */ | |
381 | } | |
382 | ||
383 | return -ENOENT; | |
384 | } | |
91ea7ebc | 385 | |
746cf898 SS |
386 | /* Write battery percentage discharge rate per hour along with system and battery identifier hash to file */ |
387 | static int put_battery_discharge_rate(int estimated_battery_discharge_rate, uint64_t system_hash_id, bool trunc) { | |
388 | int r; | |
91ea7ebc | 389 | |
746cf898 SS |
390 | if (!battery_discharge_rate_is_valid(estimated_battery_discharge_rate)) |
391 | return log_debug_errno(SYNTHETIC_ERRNO(ERANGE), | |
392 | "Invalid battery discharge rate %d%% per hour: %m", | |
393 | estimated_battery_discharge_rate); | |
91ea7ebc | 394 | |
746cf898 SS |
395 | r = write_string_filef( |
396 | DISCHARGE_RATE_FILEPATH, | |
397 | WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_MKDIR_0755 | (trunc ? WRITE_STRING_FILE_TRUNCATE : 0), | |
398 | "%"PRIu64" %d", | |
399 | system_hash_id, | |
400 | estimated_battery_discharge_rate); | |
91ea7ebc | 401 | if (r < 0) |
746cf898 | 402 | return log_debug_errno(r, "Failed to update %s: %m", DISCHARGE_RATE_FILEPATH); |
91ea7ebc | 403 | |
746cf898 | 404 | log_debug("Estimated discharge rate %d%% per hour successfully saved to %s", estimated_battery_discharge_rate, DISCHARGE_RATE_FILEPATH); |
91ea7ebc | 405 | |
746cf898 | 406 | return 0; |
91ea7ebc SS |
407 | } |
408 | ||
746cf898 SS |
409 | /* Estimate battery discharge rate using stored previous and current capacity over timestamp difference */ |
410 | int estimate_battery_discharge_rate_per_hour( | |
411 | Hashmap *last_capacity, | |
412 | Hashmap *current_capacity, | |
413 | usec_t before_timestamp, | |
414 | usec_t after_timestamp) { | |
415 | ||
416 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
417 | sd_device *dev; | |
418 | bool trunc = true; | |
91ea7ebc SS |
419 | int r; |
420 | ||
746cf898 SS |
421 | assert(last_capacity); |
422 | assert(current_capacity); | |
423 | assert(before_timestamp < after_timestamp); | |
91ea7ebc | 424 | |
746cf898 | 425 | r = battery_enumerator_new(&e); |
91ea7ebc | 426 | if (r < 0) |
746cf898 SS |
427 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); |
428 | ||
429 | FOREACH_DEVICE(e, dev) { | |
430 | int battery_last_capacity, battery_current_capacity, battery_discharge_rate; | |
431 | const char *battery_name; | |
432 | uint64_t system_hash_id; | |
433 | ||
434 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_NAME", &battery_name); | |
435 | if (r < 0) { | |
436 | log_device_debug_errno(dev, r, "Failed to read battery name, ignoring: %m"); | |
437 | continue; | |
438 | } | |
439 | ||
440 | battery_last_capacity = get_capacity_by_name(last_capacity, battery_name); | |
441 | if (battery_last_capacity < 0) | |
442 | continue; | |
443 | ||
444 | battery_current_capacity = get_capacity_by_name(current_capacity, battery_name); | |
445 | if (battery_current_capacity < 0) | |
446 | continue; | |
447 | ||
448 | if (battery_current_capacity >= battery_last_capacity) { | |
449 | log_device_debug(dev, "Battery was not discharged during suspension"); | |
450 | continue; | |
451 | } | |
452 | ||
453 | r = get_system_battery_identifier_hash(dev, &system_hash_id); | |
454 | if (r < 0) | |
455 | return log_device_debug_errno(dev, r, "Failed to generate system battery identifier hash: %m"); | |
456 | ||
457 | log_device_debug(dev, | |
458 | "%d%% was discharged in %s. Estimating discharge rate...", | |
459 | battery_last_capacity - battery_current_capacity, | |
460 | FORMAT_TIMESPAN(after_timestamp - before_timestamp, USEC_PER_SEC)); | |
461 | ||
462 | battery_discharge_rate = (battery_last_capacity - battery_current_capacity) * USEC_PER_HOUR / (after_timestamp - before_timestamp); | |
463 | r = put_battery_discharge_rate(battery_discharge_rate, system_hash_id, trunc); | |
464 | if (r < 0) | |
465 | log_device_warning_errno(dev, r, "Failed to update battery discharge rate, ignoring: %m"); | |
466 | else | |
467 | trunc = false; | |
468 | } | |
91ea7ebc | 469 | |
746cf898 SS |
470 | return 0; |
471 | } | |
472 | ||
473 | /* calculate the suspend interval for each battery and then return the sum of it */ | |
474 | int get_total_suspend_interval(Hashmap *last_capacity, usec_t *ret) { | |
475 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
476 | usec_t total_suspend_interval = 0; | |
477 | sd_device *dev; | |
478 | int r; | |
479 | ||
480 | assert(last_capacity); | |
481 | assert(ret); | |
482 | ||
483 | r = battery_enumerator_new(&e); | |
91ea7ebc | 484 | if (r < 0) |
746cf898 SS |
485 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); |
486 | ||
487 | FOREACH_DEVICE(e, dev) { | |
488 | int battery_last_capacity, previous_discharge_rate = 0; | |
489 | const char *battery_name; | |
490 | usec_t suspend_interval; | |
491 | ||
492 | r = sd_device_get_property_value(dev, "POWER_SUPPLY_NAME", &battery_name); | |
493 | if (r < 0) { | |
494 | log_device_debug_errno(dev, r, "Failed to read battery name, ignoring: %m"); | |
495 | continue; | |
496 | } | |
497 | ||
498 | battery_last_capacity = PTR_TO_CAPACITY(hashmap_get(last_capacity, battery_name)); | |
499 | if (battery_last_capacity <= 0) | |
500 | continue; | |
501 | ||
502 | r = get_battery_discharge_rate(dev, &previous_discharge_rate); | |
503 | if (r < 0) { | |
504 | log_device_debug_errno(dev, r, "Failed to get discharge rate, ignoring: %m"); | |
505 | continue; | |
506 | } | |
507 | ||
508 | if (previous_discharge_rate == 0) | |
509 | continue; | |
510 | ||
511 | if (battery_last_capacity * 2 <= previous_discharge_rate) { | |
512 | log_device_debug(dev, "Current battery capacity percentage too low compared to discharge rate"); | |
513 | continue; | |
514 | } | |
515 | suspend_interval = battery_last_capacity * USEC_PER_HOUR / previous_discharge_rate; | |
516 | ||
517 | total_suspend_interval = usec_add(total_suspend_interval, suspend_interval); | |
518 | } | |
519 | /* The previous discharge rate is stored in per hour basis so converted to minutes. | |
520 | * Subtracted 30 minutes from the result to keep a buffer of 30 minutes before battery gets critical */ | |
521 | total_suspend_interval = usec_sub_unsigned(total_suspend_interval, 30 * USEC_PER_MINUTE); | |
522 | if (total_suspend_interval == 0) | |
523 | return -ENOENT; | |
524 | ||
525 | *ret = total_suspend_interval; | |
91ea7ebc | 526 | |
91ea7ebc SS |
527 | return 0; |
528 | } | |
529 | ||
1afe3d71 SS |
530 | /* Return true if all batteries have acpi_btp support */ |
531 | int battery_trip_point_alarm_exists(void) { | |
532 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
533 | sd_device *dev; | |
534 | int r; | |
535 | ||
536 | r = battery_enumerator_new(&e); | |
537 | if (r < 0) | |
538 | return log_debug_errno(r, "Failed to initialize battery enumerator: %m"); | |
539 | ||
540 | FOREACH_DEVICE(e, dev) { | |
541 | int battery_alarm; | |
542 | const char *s; | |
543 | ||
544 | r = sd_device_get_sysattr_value(dev, "alarm", &s); | |
545 | if (r < 0) | |
546 | return log_device_debug_errno(dev, r, "Failed to read battery alarm: %m"); | |
547 | ||
548 | r = safe_atoi(s, &battery_alarm); | |
549 | if (r < 0) | |
550 | return log_device_debug_errno(dev, r, "Failed to parse battery alarm: %m"); | |
551 | if (battery_alarm <= 0) | |
552 | return false; | |
553 | } | |
554 | ||
555 | return true; | |
556 | } | |
557 | ||
558 | /* Return true if wakeup type is APM timer */ | |
559 | int check_wakeup_type(void) { | |
560 | _cleanup_free_ char *s = NULL; | |
561 | uint8_t wakeup_type_byte, tablesize; | |
562 | size_t readsize; | |
563 | int r; | |
564 | ||
565 | /* implementation via dmi/entries */ | |
566 | r = read_full_virtual_file(SYS_ENTRY_RAW_FILE_TYPE1, &s, &readsize); | |
567 | if (r < 0) | |
568 | return log_debug_errno(r, "Unable to read %s: %m", SYS_ENTRY_RAW_FILE_TYPE1); | |
569 | ||
570 | if (readsize < 25) | |
571 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Only read %zu bytes from %s (expected 25)", readsize, SYS_ENTRY_RAW_FILE_TYPE1); | |
572 | ||
573 | /* index 1 stores the size of table */ | |
574 | tablesize = (uint8_t) s[1]; | |
575 | if (tablesize < 25) | |
576 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Table size lesser than the index[0x18] where waketype byte is available."); | |
577 | ||
578 | wakeup_type_byte = (uint8_t) s[24]; | |
579 | /* 0 is Reserved and 8 is AC Power Restored. As per table 12 in | |
580 | * https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.4.0.pdf */ | |
581 | if (wakeup_type_byte >= 128) | |
582 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Expected value in range 0-127"); | |
583 | ||
584 | if (wakeup_type_byte == 3) { | |
585 | log_debug("DMI BIOS System Information indicates wakeup type is APM Timer"); | |
586 | return true; | |
587 | } | |
588 | ||
589 | return false; | |
590 | } | |
591 | ||
19adb8a3 | 592 | int can_sleep_state(char **types) { |
434fef6d | 593 | _cleanup_free_ char *text = NULL; |
19adb8a3 | 594 | int r; |
19adb8a3 ZJS |
595 | |
596 | if (strv_isempty(types)) | |
597 | return true; | |
598 | ||
599 | /* If /sys is read-only we cannot sleep */ | |
c0d8fbfa LP |
600 | if (access("/sys/power/state", W_OK) < 0) { |
601 | log_debug_errno(errno, "/sys/power/state is not writable, cannot sleep: %m"); | |
19adb8a3 | 602 | return false; |
c0d8fbfa | 603 | } |
19adb8a3 | 604 | |
434fef6d | 605 | r = read_one_line_file("/sys/power/state", &text); |
c0d8fbfa LP |
606 | if (r < 0) { |
607 | log_debug_errno(r, "Failed to read /sys/power/state, cannot sleep: %m"); | |
19adb8a3 | 608 | return false; |
c0d8fbfa | 609 | } |
19adb8a3 | 610 | |
434fef6d ZJS |
611 | const char *found; |
612 | r = string_contains_word_strv(text, NULL, types, &found); | |
613 | if (r < 0) | |
614 | return log_debug_errno(r, "Failed to parse /sys/power/state: %m"); | |
615 | if (r > 0) | |
616 | log_debug("Sleep mode \"%s\" is supported by the kernel.", found); | |
617 | else if (DEBUG_LOGGING) { | |
c550cb7f ZJS |
618 | _cleanup_free_ char *t = strv_join(types, "/"); |
619 | log_debug("Sleep mode %s not supported by the kernel, sorry.", strnull(t)); | |
620 | } | |
434fef6d | 621 | return r; |
19adb8a3 ZJS |
622 | } |
623 | ||
624 | int can_sleep_disk(char **types) { | |
434fef6d | 625 | _cleanup_free_ char *text = NULL; |
19adb8a3 | 626 | int r; |
19adb8a3 ZJS |
627 | |
628 | if (strv_isempty(types)) | |
629 | return true; | |
630 | ||
631 | /* If /sys is read-only we cannot sleep */ | |
7474f15b LP |
632 | if (access("/sys/power/disk", W_OK) < 0) { |
633 | log_debug_errno(errno, "/sys/power/disk is not writable: %m"); | |
19adb8a3 | 634 | return false; |
7474f15b | 635 | } |
19adb8a3 | 636 | |
434fef6d | 637 | r = read_one_line_file("/sys/power/disk", &text); |
7474f15b LP |
638 | if (r < 0) { |
639 | log_debug_errno(r, "Couldn't read /sys/power/disk: %m"); | |
19adb8a3 | 640 | return false; |
7474f15b | 641 | } |
19adb8a3 | 642 | |
434fef6d ZJS |
643 | for (const char *p = text;;) { |
644 | _cleanup_free_ char *word = NULL; | |
19adb8a3 | 645 | |
434fef6d ZJS |
646 | r = extract_first_word(&p, &word, NULL, 0); |
647 | if (r < 0) | |
648 | return log_debug_errno(r, "Failed to parse /sys/power/disk: %m"); | |
649 | if (r == 0) | |
650 | break; | |
19adb8a3 | 651 | |
434fef6d ZJS |
652 | char *s = word; |
653 | size_t l = strlen(s); | |
654 | if (s[0] == '[' && s[l-1] == ']') { | |
655 | s[l-1] = '\0'; | |
656 | s++; | |
657 | } | |
658 | ||
659 | if (strv_contains(types, s)) { | |
660 | log_debug("Disk sleep mode \"%s\" is supported by the kernel.", s); | |
661 | return true; | |
19adb8a3 ZJS |
662 | } |
663 | } | |
664 | ||
434fef6d ZJS |
665 | if (DEBUG_LOGGING) { |
666 | _cleanup_free_ char *t = strv_join(types, "/"); | |
667 | log_debug("Disk sleep mode %s not supported by the kernel, sorry.", strnull(t)); | |
668 | } | |
19adb8a3 ZJS |
669 | return false; |
670 | } | |
671 | ||
69ab8088 ZJS |
672 | #define HIBERNATION_SWAP_THRESHOLD 0.98 |
673 | ||
7bdf56a2 | 674 | SwapEntry* swap_entry_free(SwapEntry *se) { |
88bc86fc ZS |
675 | if (!se) |
676 | return NULL; | |
677 | ||
678 | free(se->device); | |
679 | free(se->type); | |
680 | ||
681 | return mfree(se); | |
682 | } | |
683 | ||
7bdf56a2 ZS |
684 | HibernateLocation* hibernate_location_free(HibernateLocation *hl) { |
685 | if (!hl) | |
686 | return NULL; | |
687 | ||
688 | swap_entry_free(hl->swap); | |
7bdf56a2 ZS |
689 | |
690 | return mfree(hl); | |
691 | } | |
692 | ||
52133271 | 693 | static int swap_device_to_device_id(const SwapEntry *swap, dev_t *ret_dev) { |
7bdf56a2 | 694 | struct stat sb; |
7bdf56a2 ZS |
695 | int r; |
696 | ||
697 | assert(swap); | |
698 | assert(swap->device); | |
699 | assert(swap->type); | |
700 | ||
e9f0c5d0 | 701 | r = stat(swap->device, &sb); |
7bdf56a2 | 702 | if (r < 0) |
6f9120ad | 703 | return -errno; |
7bdf56a2 | 704 | |
52133271 | 705 | if (streq(swap->type, "partition")) { |
e9f0c5d0 | 706 | if (!S_ISBLK(sb.st_mode)) |
52133271 | 707 | return -ENOTBLK; |
6f9120ad | 708 | |
e9f0c5d0 ZJS |
709 | *ret_dev = sb.st_rdev; |
710 | return 0; | |
6f9120ad | 711 | } |
7bdf56a2 | 712 | |
6f9120ad | 713 | return get_block_device(swap->device, ret_dev); |
7bdf56a2 ZS |
714 | } |
715 | ||
52133271 | 716 | /* |
162392b7 | 717 | * Attempt to calculate the swap file offset on supported filesystems. On unsupported |
8efc2c16 | 718 | * filesystems, a debug message is logged and ret_offset is set to UINT64_MAX. |
52133271 | 719 | */ |
7bdf56a2 ZS |
720 | static int calculate_swap_file_offset(const SwapEntry *swap, uint64_t *ret_offset) { |
721 | _cleanup_close_ int fd = -1; | |
722 | _cleanup_free_ struct fiemap *fiemap = NULL; | |
723 | struct stat sb; | |
65ddc2c5 | 724 | int r; |
7bdf56a2 ZS |
725 | |
726 | assert(swap); | |
727 | assert(swap->device); | |
728 | assert(streq(swap->type, "file")); | |
729 | ||
730 | fd = open(swap->device, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
e97c3691 | 731 | if (fd < 0) |
c02540dc | 732 | return log_debug_errno(errno, "Failed to open swap file %s to determine on-disk offset: %m", swap->device); |
7bdf56a2 | 733 | |
e97c3691 | 734 | if (fstat(fd, &sb) < 0) |
c02540dc | 735 | return log_debug_errno(errno, "Failed to stat %s: %m", swap->device); |
7bdf56a2 | 736 | |
65ddc2c5 ZJS |
737 | r = fd_is_fs_type(fd, BTRFS_SUPER_MAGIC); |
738 | if (r < 0) | |
739 | return log_debug_errno(r, "Error checking %s for Btrfs filesystem: %m", swap->device); | |
740 | if (r > 0) { | |
8efc2c16 ZJS |
741 | log_debug("%s: detection of swap file offset on Btrfs is not supported", swap->device); |
742 | *ret_offset = UINT64_MAX; | |
7bdf56a2 ZS |
743 | return 0; |
744 | } | |
745 | ||
746 | r = read_fiemap(fd, &fiemap); | |
747 | if (r < 0) | |
748 | return log_debug_errno(r, "Unable to read extent map for '%s': %m", swap->device); | |
749 | ||
750 | *ret_offset = fiemap->fm_extents[0].fe_physical / page_size(); | |
7bdf56a2 ZS |
751 | return 0; |
752 | } | |
88bc86fc | 753 | |
52133271 ZS |
754 | static int read_resume_files(dev_t *ret_resume, uint64_t *ret_resume_offset) { |
755 | _cleanup_free_ char *resume_str = NULL, *resume_offset_str = NULL; | |
7bdf56a2 | 756 | uint64_t resume_offset = 0; |
c02540dc | 757 | dev_t resume; |
7bdf56a2 ZS |
758 | int r; |
759 | ||
52133271 | 760 | r = read_one_line_file("/sys/power/resume", &resume_str); |
7bdf56a2 | 761 | if (r < 0) |
5021735f | 762 | return log_debug_errno(r, "Error reading /sys/power/resume: %m"); |
7bdf56a2 | 763 | |
7176f06c | 764 | r = parse_devnum(resume_str, &resume); |
52133271 ZS |
765 | if (r < 0) |
766 | return log_debug_errno(r, "Error parsing /sys/power/resume device: %s: %m", resume_str); | |
767 | ||
7bdf56a2 | 768 | r = read_one_line_file("/sys/power/resume_offset", &resume_offset_str); |
b72571e0 | 769 | if (r == -ENOENT) |
c02540dc | 770 | log_debug_errno(r, "Kernel does not support resume_offset; swap file offset detection will be skipped."); |
b72571e0 | 771 | else if (r < 0) |
5021735f | 772 | return log_debug_errno(r, "Error reading /sys/power/resume_offset: %m"); |
b72571e0 | 773 | else { |
7bdf56a2 ZS |
774 | r = safe_atou64(resume_offset_str, &resume_offset); |
775 | if (r < 0) | |
c02540dc | 776 | return log_debug_errno(r, "Failed to parse value in /sys/power/resume_offset \"%s\": %m", resume_offset_str); |
7bdf56a2 ZS |
777 | } |
778 | ||
8f817cb8 ZJS |
779 | if (resume_offset > 0 && resume == 0) |
780 | log_debug("Warning: found /sys/power/resume_offset==%" PRIu64 ", but /sys/power/resume unset. Misconfiguration?", | |
5021735f | 781 | resume_offset); |
7bdf56a2 | 782 | |
52133271 | 783 | *ret_resume = resume; |
7bdf56a2 ZS |
784 | *ret_resume_offset = resume_offset; |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
52133271 ZS |
789 | /* |
790 | * Determine if the HibernateLocation matches the resume= (device) and resume_offset= (file). | |
791 | */ | |
792 | static bool location_is_resume_device(const HibernateLocation *location, dev_t sys_resume, uint64_t sys_offset) { | |
793 | if (!location) | |
794 | return false; | |
795 | ||
8efc2c16 ZJS |
796 | return sys_resume > 0 && |
797 | sys_resume == location->devno && | |
798 | (sys_offset == location->offset || (sys_offset > 0 && location->offset == UINT64_MAX)); | |
7bdf56a2 ZS |
799 | } |
800 | ||
801 | /* | |
802 | * Attempt to find the hibernation location by parsing /proc/swaps, /sys/power/resume, and | |
803 | * /sys/power/resume_offset. | |
804 | * | |
805 | * Returns: | |
52133271 ZS |
806 | * 1 - Values are set in /sys/power/resume and /sys/power/resume_offset. |
807 | * ret_hibernate_location will represent matching /proc/swap entry if identified or NULL if not. | |
808 | * | |
809 | * 0 - No values are set in /sys/power/resume and /sys/power/resume_offset. | |
810 | ret_hibernate_location will represent the highest priority swap with most remaining space discovered in /proc/swaps. | |
811 | * | |
812 | * Negative value in the case of error. | |
7bdf56a2 ZS |
813 | */ |
814 | int find_hibernate_location(HibernateLocation **ret_hibernate_location) { | |
b72571e0 | 815 | _cleanup_fclose_ FILE *f = NULL; |
7bdf56a2 | 816 | _cleanup_(hibernate_location_freep) HibernateLocation *hibernate_location = NULL; |
aff81b18 | 817 | dev_t sys_resume = 0; /* Unnecessary initialization to appease gcc */ |
7bdf56a2 | 818 | uint64_t sys_offset = 0; |
8efc2c16 | 819 | bool resume_match = false; |
7bdf56a2 ZS |
820 | int r; |
821 | ||
822 | /* read the /sys/power/resume & /sys/power/resume_offset values */ | |
823 | r = read_resume_files(&sys_resume, &sys_offset); | |
824 | if (r < 0) | |
825 | return r; | |
9fb3675e | 826 | |
c8a202b7 | 827 | f = fopen("/proc/swaps", "re"); |
9fb3675e | 828 | if (!f) { |
c02540dc LP |
829 | log_debug_errno(errno, "Failed to open /proc/swaps: %m"); |
830 | return errno == ENOENT ? -EOPNOTSUPP : -errno; /* Convert swap not supported to a recognizable error */ | |
9fb3675e | 831 | } |
69ab8088 | 832 | |
9fb3675e | 833 | (void) fscanf(f, "%*s %*s %*s %*s %*s\n"); |
8efc2c16 | 834 | for (unsigned i = 1;; i++) { |
88bc86fc | 835 | _cleanup_(swap_entry_freep) SwapEntry *swap = NULL; |
7bdf56a2 | 836 | uint64_t swap_offset = 0; |
9fb3675e ZJS |
837 | int k; |
838 | ||
88bc86fc ZS |
839 | swap = new0(SwapEntry, 1); |
840 | if (!swap) | |
c02540dc | 841 | return -ENOMEM; |
88bc86fc | 842 | |
9fb3675e | 843 | k = fscanf(f, |
88bc86fc ZS |
844 | "%ms " /* device/file */ |
845 | "%ms " /* type of swap */ | |
846 | "%" PRIu64 /* swap size */ | |
847 | "%" PRIu64 /* used */ | |
848 | "%i\n", /* priority */ | |
849 | &swap->device, &swap->type, &swap->size, &swap->used, &swap->priority); | |
3dea6886 LP |
850 | if (k == EOF) |
851 | break; | |
88bc86fc | 852 | if (k != 5) { |
c02540dc | 853 | log_debug("Failed to parse /proc/swaps:%u, ignoring", i); |
9fb3675e ZJS |
854 | continue; |
855 | } | |
856 | ||
88bc86fc | 857 | if (streq(swap->type, "file")) { |
88bc86fc | 858 | if (endswith(swap->device, "\\040(deleted)")) { |
c02540dc | 859 | log_debug("Ignoring deleted swap file '%s'.", swap->device); |
411ae92b AJ |
860 | continue; |
861 | } | |
862 | ||
7bdf56a2 ZS |
863 | r = calculate_swap_file_offset(swap, &swap_offset); |
864 | if (r < 0) | |
865 | return r; | |
52133271 | 866 | |
88bc86fc | 867 | } else if (streq(swap->type, "partition")) { |
411ae92b | 868 | const char *fn; |
3dea6886 | 869 | |
88bc86fc | 870 | fn = path_startswith(swap->device, "/dev/"); |
411ae92b | 871 | if (fn && startswith(fn, "zram")) { |
8efc2c16 | 872 | log_debug("%s: ignoring zram swap", swap->device); |
411ae92b AJ |
873 | continue; |
874 | } | |
8efc2c16 | 875 | |
7bdf56a2 | 876 | } else { |
8efc2c16 | 877 | log_debug("%s: swap type %s is unsupported for hibernation, ignoring", swap->device, swap->type); |
7bdf56a2 | 878 | continue; |
9fb3675e | 879 | } |
3dea6886 | 880 | |
7bdf56a2 | 881 | /* prefer resume device or highest priority swap with most remaining space */ |
936a7cb6 E |
882 | if (sys_resume == 0) { |
883 | if (hibernate_location && swap->priority < hibernate_location->swap->priority) { | |
884 | log_debug("%s: ignoring device with lower priority", swap->device); | |
885 | continue; | |
886 | } | |
887 | if (hibernate_location && | |
888 | (swap->priority == hibernate_location->swap->priority | |
889 | && swap->size - swap->used < hibernate_location->swap->size - hibernate_location->swap->used)) { | |
890 | log_debug("%s: ignoring device with lower usable space", swap->device); | |
891 | continue; | |
892 | } | |
8efc2c16 | 893 | } |
7bdf56a2 | 894 | |
8efc2c16 ZJS |
895 | dev_t swap_device; |
896 | r = swap_device_to_device_id(swap, &swap_device); | |
897 | if (r < 0) | |
c02540dc | 898 | return log_debug_errno(r, "%s: failed to query device number: %m", swap->device); |
d161680e LP |
899 | if (swap_device == 0) |
900 | return log_debug_errno(SYNTHETIC_ERRNO(ENODEV), "%s: not backed by block device.", swap->device); | |
7bdf56a2 | 901 | |
8efc2c16 ZJS |
902 | hibernate_location = hibernate_location_free(hibernate_location); |
903 | hibernate_location = new(HibernateLocation, 1); | |
904 | if (!hibernate_location) | |
c02540dc | 905 | return -ENOMEM; |
7bdf56a2 | 906 | |
8efc2c16 ZJS |
907 | *hibernate_location = (HibernateLocation) { |
908 | .devno = swap_device, | |
909 | .offset = swap_offset, | |
910 | .swap = TAKE_PTR(swap), | |
911 | }; | |
7bdf56a2 | 912 | |
8efc2c16 ZJS |
913 | /* if the swap is the resume device, stop the loop */ |
914 | if (location_is_resume_device(hibernate_location, sys_resume, sys_offset)) { | |
915 | log_debug("%s: device matches configured resume settings.", hibernate_location->swap->device); | |
916 | resume_match = true; | |
917 | break; | |
88bc86fc | 918 | } |
8efc2c16 ZJS |
919 | |
920 | log_debug("%s: is a candidate device.", hibernate_location->swap->device); | |
69ab8088 ZJS |
921 | } |
922 | ||
8efc2c16 ZJS |
923 | /* We found nothing at all */ |
924 | if (!hibernate_location) | |
925 | return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), | |
926 | "No possible swap partitions or files suitable for hibernation were found in /proc/swaps."); | |
52133271 | 927 | |
8efc2c16 ZJS |
928 | /* resume= is set but a matching /proc/swaps entry was not found */ |
929 | if (sys_resume != 0 && !resume_match) | |
930 | return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), | |
931 | "No swap partitions or files matching resume config were found in /proc/swaps."); | |
52133271 | 932 | |
8efc2c16 ZJS |
933 | if (hibernate_location->offset == UINT64_MAX) { |
934 | if (sys_offset == 0) | |
935 | return log_debug_errno(SYNTHETIC_ERRNO(ENOSYS), "Offset detection failed and /sys/power/resume_offset is not set."); | |
7bdf56a2 | 936 | |
8efc2c16 ZJS |
937 | hibernate_location->offset = sys_offset; |
938 | } | |
7bdf56a2 | 939 | |
52133271 ZS |
940 | if (resume_match) |
941 | log_debug("Hibernation will attempt to use swap entry with path: %s, device: %u:%u, offset: %" PRIu64 ", priority: %i", | |
942 | hibernate_location->swap->device, major(hibernate_location->devno), minor(hibernate_location->devno), | |
943 | hibernate_location->offset, hibernate_location->swap->priority); | |
944 | else | |
8efc2c16 | 945 | log_debug("/sys/power/resume is not configured; attempting to hibernate with path: %s, device: %u:%u, offset: %" PRIu64 ", priority: %i", |
52133271 ZS |
946 | hibernate_location->swap->device, major(hibernate_location->devno), minor(hibernate_location->devno), |
947 | hibernate_location->offset, hibernate_location->swap->priority); | |
88bc86fc | 948 | |
7bdf56a2 | 949 | *ret_hibernate_location = TAKE_PTR(hibernate_location); |
88bc86fc | 950 | |
52133271 | 951 | if (resume_match) |
7bdf56a2 | 952 | return 1; |
88bc86fc ZS |
953 | |
954 | return 0; | |
9fb3675e ZJS |
955 | } |
956 | ||
4638cd39 | 957 | static bool enough_swap_for_hibernation(void) { |
9fb3675e | 958 | _cleanup_free_ char *active = NULL; |
7bdf56a2 | 959 | _cleanup_(hibernate_location_freep) HibernateLocation *hibernate_location = NULL; |
39883f62 | 960 | unsigned long long act = 0; |
9fb3675e ZJS |
961 | int r; |
962 | ||
490d20e6 VV |
963 | if (getenv_bool("SYSTEMD_BYPASS_HIBERNATION_MEMORY_CHECK") > 0) |
964 | return true; | |
965 | ||
7bdf56a2 | 966 | r = find_hibernate_location(&hibernate_location); |
9fb3675e | 967 | if (r < 0) |
69ab8088 | 968 | return false; |
69ab8088 | 969 | |
52133271 ZS |
970 | /* If /sys/power/{resume,resume_offset} is configured but a matching entry |
971 | * could not be identified in /proc/swaps, user is likely using Btrfs with a swapfile; | |
972 | * return true and let the system attempt hibernation. | |
973 | */ | |
974 | if (r > 0 && !hibernate_location) { | |
975 | log_debug("Unable to determine remaining swap space; hibernation may fail"); | |
976 | return true; | |
977 | } | |
978 | ||
979 | if (!hibernate_location) | |
980 | return false; | |
981 | ||
c4cd1d4d | 982 | r = get_proc_field("/proc/meminfo", "Active(anon)", WHITESPACE, &active); |
69ab8088 | 983 | if (r < 0) { |
904865b8 | 984 | log_debug_errno(r, "Failed to retrieve Active(anon) from /proc/meminfo: %m"); |
69ab8088 ZJS |
985 | return false; |
986 | } | |
987 | ||
988 | r = safe_atollu(active, &act); | |
989 | if (r < 0) { | |
904865b8 | 990 | log_debug_errno(r, "Failed to parse Active(anon) from /proc/meminfo: %s: %m", active); |
69ab8088 ZJS |
991 | return false; |
992 | } | |
993 | ||
7bdf56a2 | 994 | r = act <= (hibernate_location->swap->size - hibernate_location->swap->used) * HIBERNATION_SWAP_THRESHOLD; |
88bc86fc | 995 | log_debug("%s swap for hibernation, Active(anon)=%llu kB, size=%" PRIu64 " kB, used=%" PRIu64 " kB, threshold=%.2g%%", |
7bdf56a2 | 996 | r ? "Enough" : "Not enough", act, hibernate_location->swap->size, hibernate_location->swap->used, 100*HIBERNATION_SWAP_THRESHOLD); |
69ab8088 ZJS |
997 | |
998 | return r; | |
999 | } | |
1000 | ||
17c40b3a ML |
1001 | int read_fiemap(int fd, struct fiemap **ret) { |
1002 | _cleanup_free_ struct fiemap *fiemap = NULL, *result_fiemap = NULL; | |
17c40b3a ML |
1003 | struct stat statinfo; |
1004 | uint32_t result_extents = 0; | |
1005 | uint64_t fiemap_start = 0, fiemap_length; | |
6524f1a8 | 1006 | const size_t n_extra = DIV_ROUND_UP(sizeof(struct fiemap), sizeof(struct fiemap_extent)); |
17c40b3a ML |
1007 | |
1008 | if (fstat(fd, &statinfo) < 0) | |
1009 | return log_debug_errno(errno, "Cannot determine file size: %m"); | |
1010 | if (!S_ISREG(statinfo.st_mode)) | |
1011 | return -ENOTTY; | |
1012 | fiemap_length = statinfo.st_size; | |
1013 | ||
6524f1a8 ZJS |
1014 | /* Zero this out in case we run on a file with no extents */ |
1015 | fiemap = calloc(n_extra, sizeof(struct fiemap_extent)); | |
17c40b3a ML |
1016 | if (!fiemap) |
1017 | return -ENOMEM; | |
1018 | ||
6524f1a8 | 1019 | result_fiemap = malloc_multiply(n_extra, sizeof(struct fiemap_extent)); |
17c40b3a ML |
1020 | if (!result_fiemap) |
1021 | return -ENOMEM; | |
1022 | ||
1023 | /* XFS filesystem has incorrect implementation of fiemap ioctl and | |
1024 | * returns extents for only one block-group at a time, so we need | |
1025 | * to handle it manually, starting the next fiemap call from the end | |
1026 | * of the last extent | |
1027 | */ | |
1028 | while (fiemap_start < fiemap_length) { | |
1029 | *fiemap = (struct fiemap) { | |
1030 | .fm_start = fiemap_start, | |
1031 | .fm_length = fiemap_length, | |
1032 | .fm_flags = FIEMAP_FLAG_SYNC, | |
1033 | }; | |
1034 | ||
1035 | /* Find out how many extents there are */ | |
1036 | if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0) | |
1037 | return log_debug_errno(errno, "Failed to read extents: %m"); | |
1038 | ||
1039 | /* Nothing to process */ | |
1040 | if (fiemap->fm_mapped_extents == 0) | |
1041 | break; | |
1042 | ||
6524f1a8 ZJS |
1043 | /* Resize fiemap to allow us to read in the extents, result fiemap has to hold all |
1044 | * the extents for the whole file. Add space for the initial struct fiemap. */ | |
319a4f4b | 1045 | if (!greedy_realloc0((void**) &fiemap, n_extra + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent))) |
17c40b3a ML |
1046 | return -ENOMEM; |
1047 | ||
1048 | fiemap->fm_extent_count = fiemap->fm_mapped_extents; | |
1049 | fiemap->fm_mapped_extents = 0; | |
1050 | ||
1051 | if (ioctl(fd, FS_IOC_FIEMAP, fiemap) < 0) | |
1052 | return log_debug_errno(errno, "Failed to read extents: %m"); | |
1053 | ||
6524f1a8 | 1054 | /* Resize result_fiemap to allow us to copy in the extents */ |
319a4f4b | 1055 | if (!greedy_realloc((void**) &result_fiemap, |
6524f1a8 | 1056 | n_extra + result_extents + fiemap->fm_mapped_extents, sizeof(struct fiemap_extent))) |
17c40b3a ML |
1057 | return -ENOMEM; |
1058 | ||
1059 | memcpy(result_fiemap->fm_extents + result_extents, | |
1060 | fiemap->fm_extents, | |
1061 | sizeof(struct fiemap_extent) * fiemap->fm_mapped_extents); | |
1062 | ||
1063 | result_extents += fiemap->fm_mapped_extents; | |
1064 | ||
1065 | /* Highly unlikely that it is zero */ | |
6524f1a8 | 1066 | if (_likely_(fiemap->fm_mapped_extents > 0)) { |
17c40b3a ML |
1067 | uint32_t i = fiemap->fm_mapped_extents - 1; |
1068 | ||
1069 | fiemap_start = fiemap->fm_extents[i].fe_logical + | |
1070 | fiemap->fm_extents[i].fe_length; | |
1071 | ||
1072 | if (fiemap->fm_extents[i].fe_flags & FIEMAP_EXTENT_LAST) | |
1073 | break; | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | memcpy(result_fiemap, fiemap, sizeof(struct fiemap)); | |
1078 | result_fiemap->fm_mapped_extents = result_extents; | |
1079 | *ret = TAKE_PTR(result_fiemap); | |
1080 | return 0; | |
1081 | } | |
1082 | ||
c8cd8ca3 | 1083 | static int can_sleep_internal(const SleepConfig *sleep_config, SleepOperation operation, bool check_allowed); |
e8f1d00d | 1084 | |
28ca9c24 | 1085 | static bool can_s2h(const SleepConfig *sleep_config) { |
c8cd8ca3 LP |
1086 | |
1087 | static const SleepOperation operations[] = { | |
1088 | SLEEP_SUSPEND, | |
1089 | SLEEP_HIBERNATE, | |
1090 | }; | |
1091 | ||
c58493c0 ML |
1092 | int r; |
1093 | ||
1bbbefe7 | 1094 | if (!clock_supported(CLOCK_BOOTTIME_ALARM)) { |
c732e879 | 1095 | log_debug("CLOCK_BOOTTIME_ALARM is not supported."); |
c58493c0 ML |
1096 | return false; |
1097 | } | |
1098 | ||
c8cd8ca3 LP |
1099 | for (size_t i = 0; i < ELEMENTSOF(operations); i++) { |
1100 | r = can_sleep_internal(sleep_config, operations[i], false); | |
887b2019 | 1101 | if (IN_SET(r, 0, -ENOSPC)) { |
c8cd8ca3 | 1102 | log_debug("Unable to %s system.", sleep_operation_to_string(operations[i])); |
c863dc05 ZJS |
1103 | return false; |
1104 | } | |
b71c9758 | 1105 | if (r < 0) |
c8cd8ca3 | 1106 | return log_debug_errno(r, "Failed to check if %s is possible: %m", sleep_operation_to_string(operations[i])); |
c58493c0 ML |
1107 | } |
1108 | ||
1109 | return true; | |
1110 | } | |
1111 | ||
c8cd8ca3 LP |
1112 | static int can_sleep_internal( |
1113 | const SleepConfig *sleep_config, | |
1114 | SleepOperation operation, | |
1115 | bool check_allowed) { | |
c58493c0 | 1116 | |
c8cd8ca3 LP |
1117 | assert(operation >= 0); |
1118 | assert(operation < _SLEEP_OPERATION_MAX); | |
19adb8a3 | 1119 | |
c8cd8ca3 LP |
1120 | if (check_allowed && !sleep_config->allow[operation]) { |
1121 | log_debug("Sleep mode \"%s\" is disabled by configuration.", sleep_operation_to_string(operation)); | |
e8f1d00d ZJS |
1122 | return false; |
1123 | } | |
1124 | ||
c8cd8ca3 | 1125 | if (operation == SLEEP_SUSPEND_THEN_HIBERNATE) |
28ca9c24 | 1126 | return can_s2h(sleep_config); |
e8f1d00d | 1127 | |
61dc8481 LP |
1128 | if (can_sleep_state(sleep_config->states[operation]) <= 0 || |
1129 | can_sleep_disk(sleep_config->modes[operation]) <= 0) | |
69ab8088 ZJS |
1130 | return false; |
1131 | ||
c8cd8ca3 | 1132 | if (operation == SLEEP_SUSPEND) |
b71c9758 ZJS |
1133 | return true; |
1134 | ||
4638cd39 | 1135 | if (!enough_swap_for_hibernation()) |
b71c9758 ZJS |
1136 | return -ENOSPC; |
1137 | ||
1138 | return true; | |
19adb8a3 | 1139 | } |
e8f1d00d | 1140 | |
c8cd8ca3 | 1141 | int can_sleep(SleepOperation operation) { |
28ca9c24 ZS |
1142 | _cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL; |
1143 | int r; | |
1144 | ||
1145 | r = parse_sleep_config(&sleep_config); | |
1146 | if (r < 0) | |
1147 | return r; | |
1148 | ||
c8cd8ca3 | 1149 | return can_sleep_internal(sleep_config, operation, true); |
28ca9c24 ZS |
1150 | } |
1151 | ||
1326de01 | 1152 | SleepConfig* free_sleep_config(SleepConfig *sc) { |
28ca9c24 | 1153 | if (!sc) |
1326de01 | 1154 | return NULL; |
28ca9c24 | 1155 | |
c8cd8ca3 LP |
1156 | for (SleepOperation i = 0; i < _SLEEP_OPERATION_MAX; i++) { |
1157 | strv_free(sc->modes[i]); | |
1158 | strv_free(sc->states[i]); | |
1159 | } | |
28ca9c24 | 1160 | |
1326de01 | 1161 | return mfree(sc); |
e8f1d00d | 1162 | } |
be2a4b0d LP |
1163 | |
1164 | static const char* const sleep_operation_table[_SLEEP_OPERATION_MAX] = { | |
1165 | [SLEEP_SUSPEND] = "suspend", | |
1166 | [SLEEP_HIBERNATE] = "hibernate", | |
1167 | [SLEEP_HYBRID_SLEEP] = "hybrid-sleep", | |
1168 | [SLEEP_SUSPEND_THEN_HIBERNATE] = "suspend-then-hibernate", | |
1169 | }; | |
1170 | ||
1171 | DEFINE_STRING_TABLE_LOOKUP(sleep_operation, SleepOperation); |