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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
6edd7d0a | 2 | /*** |
96b2fb93 LP |
3 | Copyright © 2010-2017 Canonical |
4 | Copyright © 2018 Dell Inc. | |
6edd7d0a LP |
5 | ***/ |
6 | ||
6edd7d0a | 7 | #include <errno.h> |
ca78ad1d | 8 | #include <fcntl.h> |
19adb8a3 | 9 | #include <getopt.h> |
17c40b3a | 10 | #include <linux/fiemap.h> |
1bbbefe7 | 11 | #include <poll.h> |
ca78ad1d ZJS |
12 | #include <sys/stat.h> |
13 | #include <sys/types.h> | |
1bbbefe7 | 14 | #include <sys/timerfd.h> |
ca78ad1d | 15 | #include <unistd.h> |
6edd7d0a | 16 | |
f13f91f0 | 17 | #include "sd-bus.h" |
aa62a893 | 18 | #include "sd-messages.h" |
3f6fd1ba | 19 | |
319c4648 | 20 | #include "battery-util.h" |
64602c84 | 21 | #include "btrfs-util.h" |
d6b4d1c7 | 22 | #include "build.h" |
ba0fb5ac | 23 | #include "bus-error.h" |
f13f91f0 SS |
24 | #include "bus-locator.h" |
25 | #include "bus-util.h" | |
28db6fbf | 26 | #include "constants.h" |
4560d99e | 27 | #include "devnum-util.h" |
89711996 | 28 | #include "exec-util.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
a5c32cff | 30 | #include "fileio.h" |
ba0fb5ac | 31 | #include "format-util.h" |
0f2d351f | 32 | #include "io-util.h" |
3f6fd1ba | 33 | #include "log.h" |
5e332028 | 34 | #include "main-func.h" |
ed698d30 | 35 | #include "parse-util.h" |
294bf0c3 | 36 | #include "pretty-print.h" |
19adb8a3 | 37 | #include "sleep-config.h" |
f13f91f0 | 38 | #include "special.h" |
c58493c0 | 39 | #include "stdio-util.h" |
07630cea | 40 | #include "string-util.h" |
3f6fd1ba | 41 | #include "strv.h" |
1bbbefe7 | 42 | #include "time-util.h" |
19adb8a3 | 43 | |
f05b4bb9 MY |
44 | #define DEFAULT_HIBERNATE_DELAY_USEC_NO_BATTERY (2 * USEC_PER_HOUR) |
45 | ||
c8cd8ca3 | 46 | static SleepOperation arg_operation = _SLEEP_OPERATION_INVALID; |
98dc9d1f | 47 | |
7bdf56a2 | 48 | static int write_hibernate_location_info(const HibernateLocation *hibernate_location) { |
17c40b3a | 49 | char offset_str[DECIMAL_STR_MAX(uint64_t)]; |
4560d99e | 50 | const char *resume_str; |
17c40b3a ML |
51 | int r; |
52 | ||
7bdf56a2 ZS |
53 | assert(hibernate_location); |
54 | assert(hibernate_location->swap); | |
7bdf56a2 | 55 | |
4560d99e LP |
56 | resume_str = FORMAT_DEVNUM(hibernate_location->devno); |
57 | ||
52133271 | 58 | r = write_string_file("/sys/power/resume", resume_str, WRITE_STRING_FILE_DISABLE_BUFFER); |
17c40b3a | 59 | if (r < 0) |
7bdf56a2 | 60 | return log_debug_errno(r, "Failed to write partition device to /sys/power/resume for '%s': '%s': %m", |
52133271 | 61 | hibernate_location->swap->device, resume_str); |
17c40b3a | 62 | |
52133271 | 63 | log_debug("Wrote resume= value for %s to /sys/power/resume: %s", hibernate_location->swap->device, resume_str); |
ed698d30 | 64 | |
7bdf56a2 ZS |
65 | /* if it's a swap partition, we're done */ |
66 | if (streq(hibernate_location->swap->type, "partition")) | |
ed698d30 | 67 | return r; |
7bdf56a2 ZS |
68 | |
69 | if (!streq(hibernate_location->swap->type, "file")) | |
baaa35ad | 70 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), |
7bdf56a2 | 71 | "Invalid hibernate type: %s", hibernate_location->swap->type); |
17c40b3a ML |
72 | |
73 | /* Only available in 4.17+ */ | |
52133271 | 74 | if (hibernate_location->offset > 0 && access("/sys/power/resume_offset", W_OK) < 0) { |
c695101f | 75 | if (errno == ENOENT) { |
7bdf56a2 | 76 | log_debug("Kernel too old, can't configure resume_offset for %s, ignoring: %" PRIu64, |
52133271 | 77 | hibernate_location->swap->device, hibernate_location->offset); |
17c40b3a | 78 | return 0; |
c695101f | 79 | } |
ed698d30 | 80 | |
3f2e15ab | 81 | return log_debug_errno(errno, "/sys/power/resume_offset not writable: %m"); |
c695101f | 82 | } |
17c40b3a | 83 | |
52133271 | 84 | xsprintf(offset_str, "%" PRIu64, hibernate_location->offset); |
57512c89 | 85 | r = write_string_file("/sys/power/resume_offset", offset_str, WRITE_STRING_FILE_DISABLE_BUFFER); |
17c40b3a | 86 | if (r < 0) |
7bdf56a2 ZS |
87 | return log_debug_errno(r, "Failed to write swap file offset to /sys/power/resume_offset for '%s': '%s': %m", |
88 | hibernate_location->swap->device, offset_str); | |
17c40b3a | 89 | |
7bdf56a2 | 90 | log_debug("Wrote resume_offset= value for %s to /sys/power/resume_offset: %s", hibernate_location->swap->device, offset_str); |
2002d8cd | 91 | |
17c40b3a ML |
92 | return 0; |
93 | } | |
94 | ||
19adb8a3 ZJS |
95 | static int write_mode(char **modes) { |
96 | int r = 0; | |
19adb8a3 ZJS |
97 | |
98 | STRV_FOREACH(mode, modes) { | |
aa62a893 LP |
99 | int k; |
100 | ||
57512c89 | 101 | k = write_string_file("/sys/power/disk", *mode, WRITE_STRING_FILE_DISABLE_BUFFER); |
ed698d30 | 102 | if (k >= 0) |
19adb8a3 | 103 | return 0; |
aa62a893 | 104 | |
ed698d30 LP |
105 | log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m", *mode); |
106 | if (r >= 0) | |
19adb8a3 ZJS |
107 | r = k; |
108 | } | |
6edd7d0a | 109 | |
19adb8a3 ZJS |
110 | return r; |
111 | } | |
6edd7d0a | 112 | |
2fd069b1 | 113 | static int write_state(FILE **f, char **states) { |
19adb8a3 ZJS |
114 | int r = 0; |
115 | ||
2c470205 LP |
116 | assert(f); |
117 | assert(*f); | |
118 | ||
19adb8a3 ZJS |
119 | STRV_FOREACH(state, states) { |
120 | int k; | |
121 | ||
57512c89 | 122 | k = write_string_stream(*f, *state, WRITE_STRING_FILE_DISABLE_BUFFER); |
ed698d30 | 123 | if (k >= 0) |
19adb8a3 | 124 | return 0; |
ed698d30 LP |
125 | log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m", *state); |
126 | if (r >= 0) | |
19adb8a3 ZJS |
127 | r = k; |
128 | ||
2fd069b1 ZJS |
129 | fclose(*f); |
130 | *f = fopen("/sys/power/state", "we"); | |
4a62c710 | 131 | if (!*f) |
0ca906ac | 132 | return -errno; |
6edd7d0a LP |
133 | } |
134 | ||
19adb8a3 ZJS |
135 | return r; |
136 | } | |
6edd7d0a | 137 | |
ba0fb5ac LP |
138 | static int lock_all_homes(void) { |
139 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
140 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; | |
141 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
142 | int r; | |
143 | ||
144 | /* Let's synchronously lock all home directories managed by homed that have been marked for it. This | |
145 | * way the key material required to access these volumes is hopefully removed from memory. */ | |
146 | ||
147 | r = sd_bus_open_system(&bus); | |
148 | if (r < 0) | |
149 | return log_warning_errno(r, "Failed to connect to system bus, ignoring: %m"); | |
150 | ||
a29f13f2 | 151 | r = bus_message_new_method_call(bus, &m, bus_home_mgr, "LockAllHomes"); |
ba0fb5ac LP |
152 | if (r < 0) |
153 | return bus_log_create_error(r); | |
154 | ||
155 | /* If homed is not running it can't have any home directories active either. */ | |
156 | r = sd_bus_message_set_auto_start(m, false); | |
157 | if (r < 0) | |
158 | return log_error_errno(r, "Failed to disable auto-start of LockAllHomes() message: %m"); | |
159 | ||
160 | r = sd_bus_call(bus, m, DEFAULT_TIMEOUT_USEC, &error, NULL); | |
161 | if (r < 0) { | |
1c5950bd ZJS |
162 | if (!bus_error_is_unknown_service(&error)) |
163 | return log_error_errno(r, "Failed to lock home directories: %s", bus_error_message(&error, r)); | |
ba0fb5ac | 164 | |
75029e15 ZJS |
165 | log_debug("systemd-homed is not running, locking of home directories skipped."); |
166 | } else | |
167 | log_debug("Successfully requested locking of all home directories."); | |
168 | return 0; | |
ba0fb5ac LP |
169 | } |
170 | ||
c8cd8ca3 LP |
171 | static int execute( |
172 | const SleepConfig *sleep_config, | |
173 | SleepOperation operation, | |
174 | const char *action) { | |
175 | ||
e2cc6eca LP |
176 | char *arguments[] = { |
177 | NULL, | |
178 | (char*) "pre", | |
c8cd8ca3 LP |
179 | /* NB: we use 'arg_operation' instead of 'operation' here, as we want to communicate the overall |
180 | * operation here, not the specific one, in case of s2h. */ | |
181 | (char*) sleep_operation_to_string(arg_operation), | |
e2cc6eca LP |
182 | NULL |
183 | }; | |
b5084605 LP |
184 | static const char* const dirs[] = { |
185 | SYSTEM_SLEEP_PATH, | |
186 | NULL | |
187 | }; | |
e2cc6eca | 188 | |
7bdf56a2 | 189 | _cleanup_(hibernate_location_freep) HibernateLocation *hibernate_location = NULL; |
c8cd8ca3 LP |
190 | _cleanup_fclose_ FILE *f = NULL; |
191 | char **modes, **states; | |
7bdf56a2 | 192 | int r; |
6524990f | 193 | |
c8cd8ca3 LP |
194 | assert(sleep_config); |
195 | assert(operation >= 0); | |
196 | assert(operation < _SLEEP_OPERATION_MAX); | |
197 | assert(operation != SLEEP_SUSPEND_THEN_HIBERNATE); /* Handled by execute_s2h() instead */ | |
198 | ||
199 | states = sleep_config->states[operation]; | |
200 | modes = sleep_config->modes[operation]; | |
201 | ||
202 | if (strv_isempty(states)) | |
203 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
204 | "No sleep states configured for sleep operation %s, can't sleep.", | |
205 | sleep_operation_to_string(operation)); | |
206 | ||
19adb8a3 | 207 | /* This file is opened first, so that if we hit an error, |
09692409 | 208 | * we can abort before modifying any state. */ |
6edd7d0a | 209 | f = fopen("/sys/power/state", "we"); |
4a62c710 MS |
210 | if (!f) |
211 | return log_error_errno(errno, "Failed to open /sys/power/state: %m"); | |
6edd7d0a | 212 | |
57512c89 YW |
213 | setvbuf(f, NULL, _IONBF, 0); |
214 | ||
c02540dc | 215 | /* Configure hibernation settings if we are supposed to hibernate */ |
17c40b3a | 216 | if (!strv_isempty(modes)) { |
7bdf56a2 | 217 | r = find_hibernate_location(&hibernate_location); |
17c40b3a | 218 | if (r < 0) |
c02540dc LP |
219 | return log_error_errno(r, "Failed to find location to hibernate to: %m"); |
220 | if (r == 0) { /* 0 means: no hibernation location was configured in the kernel so far, let's | |
221 | * do it ourselves then. > 0 means: kernel already had a configured hibernation | |
222 | * location which we shouldn't touch. */ | |
7bdf56a2 ZS |
223 | r = write_hibernate_location_info(hibernate_location); |
224 | if (r < 0) | |
225 | return log_error_errno(r, "Failed to prepare for hibernation: %m"); | |
226 | } | |
2002d8cd | 227 | |
17c40b3a ML |
228 | r = write_mode(modes); |
229 | if (r < 0) | |
aea29a30 | 230 | return log_error_errno(r, "Failed to write mode to /sys/power/disk: %m"); |
17c40b3a | 231 | } |
19adb8a3 | 232 | |
c8cd8ca3 LP |
233 | /* Pass an action string to the call-outs. This is mostly our operation string, except if the |
234 | * hibernate step of s-t-h fails, in which case we communicate that with a separate action. */ | |
235 | if (!action) | |
236 | action = sleep_operation_to_string(operation); | |
237 | ||
ae463e4e ZS |
238 | r = setenv("SYSTEMD_SLEEP_ACTION", action, 1); |
239 | if (r != 0) | |
c3565fe8 | 240 | log_warning_errno(errno, "Error setting SYSTEMD_SLEEP_ACTION=%s, ignoring: %m", action); |
ae463e4e | 241 | |
aed98342 | 242 | (void) execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, arguments, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); |
ba0fb5ac | 243 | (void) lock_all_homes(); |
6edd7d0a | 244 | |
19adb8a3 | 245 | log_struct(LOG_INFO, |
2b044526 | 246 | "MESSAGE_ID=" SD_MESSAGE_SLEEP_START_STR, |
c8cd8ca3 LP |
247 | LOG_MESSAGE("Entering sleep state '%s'...", sleep_operation_to_string(operation)), |
248 | "SLEEP=%s", sleep_operation_to_string(arg_operation)); | |
19adb8a3 | 249 | |
2fd069b1 | 250 | r = write_state(&f, states); |
19adb8a3 | 251 | if (r < 0) |
14250f09 LP |
252 | log_struct_errno(LOG_ERR, r, |
253 | "MESSAGE_ID=" SD_MESSAGE_SLEEP_STOP_STR, | |
c8cd8ca3 LP |
254 | LOG_MESSAGE("Failed to put system to sleep. System resumed again: %m"), |
255 | "SLEEP=%s", sleep_operation_to_string(arg_operation)); | |
14250f09 LP |
256 | else |
257 | log_struct(LOG_INFO, | |
258 | "MESSAGE_ID=" SD_MESSAGE_SLEEP_STOP_STR, | |
c8cd8ca3 LP |
259 | LOG_MESSAGE("System returned from sleep state."), |
260 | "SLEEP=%s", sleep_operation_to_string(arg_operation)); | |
eb267289 | 261 | |
6edd7d0a | 262 | arguments[1] = (char*) "post"; |
aed98342 | 263 | (void) execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, arguments, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); |
6edd7d0a | 264 | |
19adb8a3 ZJS |
265 | return r; |
266 | } | |
6edd7d0a | 267 | |
1afe3d71 | 268 | static int custom_timer_suspend(const SleepConfig *sleep_config) { |
4f58b656 | 269 | usec_t hibernate_timestamp; |
c58493c0 ML |
270 | int r; |
271 | ||
28ca9c24 | 272 | assert(sleep_config); |
c58493c0 | 273 | |
4f58b656 YW |
274 | hibernate_timestamp = usec_add(now(CLOCK_BOOTTIME), sleep_config->hibernate_delay_usec); |
275 | ||
e0b3a70f | 276 | while (battery_is_discharging_and_low() == 0) { |
de5d8b40 | 277 | _cleanup_hashmap_free_ Hashmap *last_capacity = NULL, *current_capacity = NULL; |
254d1313 | 278 | _cleanup_close_ int tfd = -EBADF; |
96d662fa | 279 | struct itimerspec ts = {}; |
2ed56afe | 280 | usec_t suspend_interval; |
96d662fa | 281 | bool woken_by_timer; |
96d662fa SS |
282 | |
283 | tfd = timerfd_create(CLOCK_BOOTTIME_ALARM, TFD_NONBLOCK|TFD_CLOEXEC); | |
284 | if (tfd < 0) | |
285 | return log_error_errno(errno, "Error creating timerfd: %m"); | |
286 | ||
d812e104 | 287 | /* Store current battery capacity before suspension */ |
746cf898 | 288 | r = fetch_batteries_capacity_by_name(&last_capacity); |
d812e104 | 289 | if (r < 0) |
96d662fa SS |
290 | return log_error_errno(r, "Error fetching battery capacity percentage: %m"); |
291 | ||
4f58b656 YW |
292 | if (hashmap_isempty(last_capacity)) |
293 | /* In case of no battery, system suspend interval will be set to HibernateDelaySec= or 2 hours. */ | |
f05b4bb9 MY |
294 | suspend_interval = timestamp_is_set(hibernate_timestamp) |
295 | ? sleep_config->hibernate_delay_usec : DEFAULT_HIBERNATE_DELAY_USEC_NO_BATTERY; | |
4f58b656 YW |
296 | else { |
297 | r = get_total_suspend_interval(last_capacity, &suspend_interval); | |
298 | if (r < 0) { | |
299 | log_debug_errno(r, "Failed to estimate suspend interval using previous discharge rate, ignoring: %m"); | |
300 | /* In case of any errors, especially when we do not know the battery | |
301 | * discharging rate, system suspend interval will be set to | |
302 | * SuspendEstimationSec=. */ | |
303 | suspend_interval = sleep_config->suspend_estimation_usec; | |
304 | } | |
2ed56afe | 305 | } |
746cf898 | 306 | |
4f58b656 | 307 | /* Do not suspend more than HibernateDelaySec= */ |
d812e104 | 308 | usec_t before_timestamp = now(CLOCK_BOOTTIME); |
4f58b656 YW |
309 | suspend_interval = MIN(suspend_interval, usec_sub_unsigned(hibernate_timestamp, before_timestamp)); |
310 | if (suspend_interval <= 0) | |
311 | break; /* system should hibernate */ | |
d812e104 | 312 | |
96d662fa SS |
313 | log_debug("Set timerfd wake alarm for %s", FORMAT_TIMESPAN(suspend_interval, USEC_PER_SEC)); |
314 | /* Wake alarm for system with or without battery to hibernate or estimate discharge rate whichever is applicable */ | |
315 | timespec_store(&ts.it_value, suspend_interval); | |
316 | ||
317 | if (timerfd_settime(tfd, 0, &ts, NULL) < 0) | |
318 | return log_error_errno(errno, "Error setting battery estimate timer: %m"); | |
319 | ||
320 | r = execute(sleep_config, SLEEP_SUSPEND, NULL); | |
321 | if (r < 0) | |
322 | return r; | |
c58493c0 | 323 | |
96d662fa SS |
324 | r = fd_wait_for_event(tfd, POLLIN, 0); |
325 | if (r < 0) | |
326 | return log_error_errno(r, "Error polling timerfd: %m"); | |
327 | /* Store fd_wait status */ | |
328 | woken_by_timer = FLAGS_SET(r, POLLIN); | |
329 | ||
746cf898 | 330 | r = fetch_batteries_capacity_by_name(¤t_capacity); |
d812e104 | 331 | if (r < 0 || hashmap_isempty(current_capacity)) { |
746cf898 | 332 | /* In case of no battery or error while getting charge level, no need to measure |
d812e104 YW |
333 | * discharge rate. Instead the system should wake up if it is manual wakeup or |
334 | * hibernate if this is a timer wakeup. */ | |
335 | if (r < 0) | |
336 | log_debug_errno(r, "Battery capacity percentage unavailable, cannot estimate discharge rate: %m"); | |
337 | else | |
338 | log_debug("No battery found."); | |
746cf898 SS |
339 | if (!woken_by_timer) |
340 | return 0; | |
96d662fa | 341 | break; |
746cf898 | 342 | } |
96d662fa | 343 | |
d812e104 | 344 | usec_t after_timestamp = now(CLOCK_BOOTTIME); |
099810a6 ZJS |
345 | log_debug("Attempting to estimate battery discharge rate after wakeup from %s sleep", |
346 | FORMAT_TIMESPAN(after_timestamp - before_timestamp, USEC_PER_HOUR)); | |
96d662fa | 347 | |
746cf898 SS |
348 | if (after_timestamp != before_timestamp) { |
349 | r = estimate_battery_discharge_rate_per_hour(last_capacity, current_capacity, before_timestamp, after_timestamp); | |
91ea7ebc | 350 | if (r < 0) |
746cf898 SS |
351 | log_warning_errno(r, "Failed to estimate and update battery discharge rate, ignoring: %m"); |
352 | } else | |
353 | log_debug("System woke up too early to estimate discharge rate"); | |
c58493c0 | 354 | |
96d662fa SS |
355 | if (!woken_by_timer) |
356 | /* Return as manual wakeup done. This also will return in case battery was charged during suspension */ | |
357 | return 0; | |
1afe3d71 SS |
358 | |
359 | r = check_wakeup_type(); | |
360 | if (r < 0) | |
361 | log_debug_errno(r, "Failed to check hardware wakeup type, ignoring: %m"); | |
362 | if (r > 0) { | |
363 | log_debug("wakeup type is APM timer"); | |
364 | /* system should hibernate */ | |
365 | break; | |
366 | } | |
367 | } | |
368 | ||
369 | return 1; | |
370 | } | |
371 | ||
f13f91f0 SS |
372 | /* Freeze when invoked and thaw on cleanup */ |
373 | static int freeze_thaw_user_slice(const char **method) { | |
374 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
375 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
376 | int r; | |
377 | ||
378 | if (!method || !*method) | |
379 | return 0; | |
380 | ||
381 | r = bus_connect_system_systemd(&bus); | |
382 | if (r < 0) | |
383 | return log_debug_errno(r, "Failed to open connection to systemd: %m"); | |
384 | ||
f274f8bf | 385 | (void) sd_bus_set_method_call_timeout(bus, FREEZE_TIMEOUT); |
432a3211 | 386 | |
f13f91f0 SS |
387 | r = bus_call_method(bus, bus_systemd_mgr, *method, &error, NULL, "s", SPECIAL_USER_SLICE); |
388 | if (r < 0) | |
389 | return log_debug_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); | |
390 | ||
391 | return 1; | |
392 | } | |
393 | ||
1afe3d71 | 394 | static int execute_s2h(const SleepConfig *sleep_config) { |
efa736d3 | 395 | _unused_ _cleanup_(freeze_thaw_user_slice) const char *auto_method_thaw = "ThawUnit"; |
4f58b656 | 396 | int r; |
1afe3d71 SS |
397 | |
398 | assert(sleep_config); | |
399 | ||
f13f91f0 SS |
400 | r = freeze_thaw_user_slice(&(const char*) { "FreezeUnit" }); |
401 | if (r < 0) | |
402 | log_debug_errno(r, "Failed to freeze unit user.slice, ignoring: %m"); | |
f13f91f0 | 403 | |
4f58b656 YW |
404 | /* Only check if we have automated battery alarms if HibernateDelaySec= is not set, as in that case |
405 | * we'll busy poll for the configured interval instead */ | |
406 | if (!timestamp_is_set(sleep_config->hibernate_delay_usec)) { | |
407 | r = check_wakeup_type(); | |
408 | if (r < 0) | |
409 | log_debug_errno(r, "Failed to check hardware wakeup type, ignoring: %m"); | |
410 | else { | |
411 | r = battery_trip_point_alarm_exists(); | |
412 | if (r < 0) | |
413 | log_debug_errno(r, "Failed to check whether acpi_btp support is enabled or not, ignoring: %m"); | |
414 | } | |
415 | } else | |
416 | r = 0; /* Force fallback path */ | |
1afe3d71 | 417 | |
4f58b656 | 418 | if (r > 0) { /* If we have both wakeup alarms and battery trip point support, use them */ |
1afe3d71 SS |
419 | log_debug("Attempting to suspend..."); |
420 | r = execute(sleep_config, SLEEP_SUSPEND, NULL); | |
421 | if (r < 0) | |
422 | return r; | |
423 | ||
424 | r = check_wakeup_type(); | |
425 | if (r < 0) | |
426 | return log_debug_errno(r, "Failed to check hardware wakeup type: %m"); | |
427 | ||
428 | if (r == 0) | |
429 | /* For APM Timer wakeup, system should hibernate else wakeup */ | |
430 | return 0; | |
431 | } else { | |
432 | r = custom_timer_suspend(sleep_config); | |
3c3f4601 | 433 | if (r < 0) |
1afe3d71 | 434 | return log_debug_errno(r, "Suspend cycle with manual battery discharge rate estimation failed: %m"); |
3c3f4601 | 435 | if (r == 0) |
1afe3d71 SS |
436 | /* manual wakeup */ |
437 | return 0; | |
96d662fa | 438 | } |
1afe3d71 | 439 | /* For above custom timer, if 1 is returned, system will directly hibernate */ |
28ca9c24 | 440 | |
96d662fa | 441 | log_debug("Attempting to hibernate"); |
c8cd8ca3 | 442 | r = execute(sleep_config, SLEEP_HIBERNATE, NULL); |
f05e1ae6 | 443 | if (r < 0) { |
b0c035e3 | 444 | log_notice("Couldn't hibernate, will try to suspend again."); |
0f2d351f | 445 | |
c8cd8ca3 | 446 | r = execute(sleep_config, SLEEP_SUSPEND, "suspend-after-failed-hibernate"); |
0f2d351f | 447 | if (r < 0) |
b0c035e3 | 448 | return r; |
f05e1ae6 LP |
449 | } |
450 | ||
451 | return 0; | |
c58493c0 ML |
452 | } |
453 | ||
37ec0fdd LP |
454 | static int help(void) { |
455 | _cleanup_free_ char *link = NULL; | |
456 | int r; | |
457 | ||
458 | r = terminal_urlify_man("systemd-suspend.service", "8", &link); | |
459 | if (r < 0) | |
460 | return log_oom(); | |
461 | ||
19adb8a3 ZJS |
462 | printf("%s COMMAND\n\n" |
463 | "Suspend the system, hibernate the system, or both.\n\n" | |
37ec0fdd LP |
464 | " -h --help Show this help and exit\n" |
465 | " --version Print version string and exit\n" | |
466 | "\nCommands:\n" | |
467 | " suspend Suspend the system\n" | |
468 | " hibernate Hibernate the system\n" | |
469 | " hybrid-sleep Both hibernate and suspend the system\n" | |
e68c79db | 470 | " suspend-then-hibernate Initially suspend and then hibernate\n" |
37ec0fdd | 471 | " the system after a fixed period of time\n" |
bc556335 DDM |
472 | "\nSee the %s for details.\n", |
473 | program_invocation_short_name, | |
474 | link); | |
37ec0fdd LP |
475 | |
476 | return 0; | |
19adb8a3 | 477 | } |
6edd7d0a | 478 | |
19adb8a3 ZJS |
479 | static int parse_argv(int argc, char *argv[]) { |
480 | enum { | |
481 | ARG_VERSION = 0x100, | |
482 | }; | |
483 | ||
484 | static const struct option options[] = { | |
485 | { "help", no_argument, NULL, 'h' }, | |
486 | { "version", no_argument, NULL, ARG_VERSION }, | |
eb9da376 | 487 | {} |
19adb8a3 ZJS |
488 | }; |
489 | ||
490 | int c; | |
491 | ||
492 | assert(argc >= 0); | |
493 | assert(argv); | |
494 | ||
601185b4 | 495 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
79893116 | 496 | switch (c) { |
19adb8a3 | 497 | case 'h': |
37ec0fdd | 498 | return help(); |
19adb8a3 ZJS |
499 | |
500 | case ARG_VERSION: | |
3f6fd1ba | 501 | return version(); |
19adb8a3 ZJS |
502 | |
503 | case '?': | |
504 | return -EINVAL; | |
505 | ||
506 | default: | |
04499a70 | 507 | assert_not_reached(); |
19adb8a3 ZJS |
508 | } |
509 | ||
baaa35ad ZJS |
510 | if (argc - optind != 1) |
511 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
512 | "Usage: %s COMMAND", | |
513 | program_invocation_short_name); | |
19adb8a3 | 514 | |
c8cd8ca3 LP |
515 | arg_operation = sleep_operation_from_string(argv[optind]); |
516 | if (arg_operation < 0) | |
517 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown command '%s'.", argv[optind]); | |
19adb8a3 ZJS |
518 | |
519 | return 1 /* work to do */; | |
520 | } | |
521 | ||
7caefb81 | 522 | static int run(int argc, char *argv[]) { |
28ca9c24 | 523 | _cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL; |
19adb8a3 ZJS |
524 | int r; |
525 | ||
d2acb93d | 526 | log_setup(); |
19adb8a3 ZJS |
527 | |
528 | r = parse_argv(argc, argv); | |
529 | if (r <= 0) | |
7caefb81 | 530 | return r; |
19adb8a3 | 531 | |
28ca9c24 ZS |
532 | r = parse_sleep_config(&sleep_config); |
533 | if (r < 0) | |
534 | return r; | |
535 | ||
c8cd8ca3 | 536 | if (!sleep_config->allow[arg_operation]) |
baaa35ad | 537 | return log_error_errno(SYNTHETIC_ERRNO(EACCES), |
c8cd8ca3 LP |
538 | "Sleep operation \"%s\" is disabled by configuration, refusing.", |
539 | sleep_operation_to_string(arg_operation)); | |
e8f1d00d | 540 | |
3d132111 LP |
541 | switch (arg_operation) { |
542 | ||
543 | case SLEEP_SUSPEND_THEN_HIBERNATE: | |
544 | r = execute_s2h(sleep_config); | |
545 | break; | |
546 | ||
547 | case SLEEP_HYBRID_SLEEP: | |
548 | r = execute(sleep_config, SLEEP_HYBRID_SLEEP, NULL); | |
549 | if (r < 0) { | |
550 | /* If we can't hybrid sleep, then let's try to suspend at least. After all, the user | |
551 | * asked us to do both: suspend + hibernate, and it's almost certainly the | |
552 | * hibernation that failed, hence still do the other thing, the suspend. */ | |
553 | ||
554 | log_notice("Couldn't hybrid sleep, will try to suspend instead."); | |
555 | ||
556 | r = execute(sleep_config, SLEEP_SUSPEND, "suspend-after-failed-hybrid-sleep"); | |
557 | } | |
558 | ||
559 | break; | |
560 | ||
561 | default: | |
562 | r = execute(sleep_config, arg_operation, NULL); | |
563 | break; | |
564 | } | |
565 | ||
566 | return r; | |
6edd7d0a | 567 | } |
7caefb81 ZJS |
568 | |
569 | DEFINE_MAIN_FUNCTION(run); |