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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" |
4014172a | 37 | #include "sleep-util.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", |
8601ecbc | 61 | hibernate_location->swap->path, resume_str); |
17c40b3a | 62 | |
8601ecbc | 63 | log_debug("Wrote resume= value for %s to /sys/power/resume: %s", hibernate_location->swap->path, resume_str); |
ed698d30 | 64 | |
7bdf56a2 | 65 | /* if it's a swap partition, we're done */ |
1296b427 LP |
66 | if (hibernate_location->swap->type == SWAP_BLOCK) |
67 | return 0; | |
7bdf56a2 | 68 | |
1296b427 | 69 | assert(hibernate_location->swap->type == SWAP_FILE); |
17c40b3a ML |
70 | |
71 | /* Only available in 4.17+ */ | |
52133271 | 72 | if (hibernate_location->offset > 0 && access("/sys/power/resume_offset", W_OK) < 0) { |
c695101f | 73 | if (errno == ENOENT) { |
7bdf56a2 | 74 | log_debug("Kernel too old, can't configure resume_offset for %s, ignoring: %" PRIu64, |
8601ecbc | 75 | hibernate_location->swap->path, hibernate_location->offset); |
17c40b3a | 76 | return 0; |
c695101f | 77 | } |
ed698d30 | 78 | |
3f2e15ab | 79 | return log_debug_errno(errno, "/sys/power/resume_offset not writable: %m"); |
c695101f | 80 | } |
17c40b3a | 81 | |
52133271 | 82 | xsprintf(offset_str, "%" PRIu64, hibernate_location->offset); |
57512c89 | 83 | r = write_string_file("/sys/power/resume_offset", offset_str, WRITE_STRING_FILE_DISABLE_BUFFER); |
17c40b3a | 84 | if (r < 0) |
7bdf56a2 | 85 | return log_debug_errno(r, "Failed to write swap file offset to /sys/power/resume_offset for '%s': '%s': %m", |
8601ecbc | 86 | hibernate_location->swap->path, offset_str); |
17c40b3a | 87 | |
8601ecbc | 88 | log_debug("Wrote resume_offset= value for %s to /sys/power/resume_offset: %s", hibernate_location->swap->path, offset_str); |
2002d8cd | 89 | |
17c40b3a ML |
90 | return 0; |
91 | } | |
92 | ||
19adb8a3 ZJS |
93 | static int write_mode(char **modes) { |
94 | int r = 0; | |
19adb8a3 ZJS |
95 | |
96 | STRV_FOREACH(mode, modes) { | |
aa62a893 LP |
97 | int k; |
98 | ||
57512c89 | 99 | k = write_string_file("/sys/power/disk", *mode, WRITE_STRING_FILE_DISABLE_BUFFER); |
ed698d30 | 100 | if (k >= 0) |
19adb8a3 | 101 | return 0; |
aa62a893 | 102 | |
ed698d30 LP |
103 | log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m", *mode); |
104 | if (r >= 0) | |
19adb8a3 ZJS |
105 | r = k; |
106 | } | |
6edd7d0a | 107 | |
19adb8a3 ZJS |
108 | return r; |
109 | } | |
6edd7d0a | 110 | |
2fd069b1 | 111 | static int write_state(FILE **f, char **states) { |
19adb8a3 ZJS |
112 | int r = 0; |
113 | ||
2c470205 LP |
114 | assert(f); |
115 | assert(*f); | |
116 | ||
19adb8a3 ZJS |
117 | STRV_FOREACH(state, states) { |
118 | int k; | |
119 | ||
57512c89 | 120 | k = write_string_stream(*f, *state, WRITE_STRING_FILE_DISABLE_BUFFER); |
ed698d30 | 121 | if (k >= 0) |
19adb8a3 | 122 | return 0; |
ed698d30 LP |
123 | log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m", *state); |
124 | if (r >= 0) | |
19adb8a3 ZJS |
125 | r = k; |
126 | ||
2fd069b1 ZJS |
127 | fclose(*f); |
128 | *f = fopen("/sys/power/state", "we"); | |
4a62c710 | 129 | if (!*f) |
0ca906ac | 130 | return -errno; |
6edd7d0a LP |
131 | } |
132 | ||
19adb8a3 ZJS |
133 | return r; |
134 | } | |
6edd7d0a | 135 | |
ba0fb5ac LP |
136 | static int lock_all_homes(void) { |
137 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
138 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; | |
139 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
140 | int r; | |
141 | ||
142 | /* Let's synchronously lock all home directories managed by homed that have been marked for it. This | |
143 | * way the key material required to access these volumes is hopefully removed from memory. */ | |
144 | ||
145 | r = sd_bus_open_system(&bus); | |
146 | if (r < 0) | |
147 | return log_warning_errno(r, "Failed to connect to system bus, ignoring: %m"); | |
148 | ||
a29f13f2 | 149 | r = bus_message_new_method_call(bus, &m, bus_home_mgr, "LockAllHomes"); |
ba0fb5ac LP |
150 | if (r < 0) |
151 | return bus_log_create_error(r); | |
152 | ||
153 | /* If homed is not running it can't have any home directories active either. */ | |
154 | r = sd_bus_message_set_auto_start(m, false); | |
155 | if (r < 0) | |
156 | return log_error_errno(r, "Failed to disable auto-start of LockAllHomes() message: %m"); | |
157 | ||
158 | r = sd_bus_call(bus, m, DEFAULT_TIMEOUT_USEC, &error, NULL); | |
159 | if (r < 0) { | |
1c5950bd ZJS |
160 | if (!bus_error_is_unknown_service(&error)) |
161 | return log_error_errno(r, "Failed to lock home directories: %s", bus_error_message(&error, r)); | |
ba0fb5ac | 162 | |
75029e15 ZJS |
163 | log_debug("systemd-homed is not running, locking of home directories skipped."); |
164 | } else | |
165 | log_debug("Successfully requested locking of all home directories."); | |
166 | return 0; | |
ba0fb5ac LP |
167 | } |
168 | ||
c8cd8ca3 LP |
169 | static int execute( |
170 | const SleepConfig *sleep_config, | |
171 | SleepOperation operation, | |
172 | const char *action) { | |
173 | ||
e2cc6eca LP |
174 | char *arguments[] = { |
175 | NULL, | |
176 | (char*) "pre", | |
c8cd8ca3 LP |
177 | /* NB: we use 'arg_operation' instead of 'operation' here, as we want to communicate the overall |
178 | * operation here, not the specific one, in case of s2h. */ | |
179 | (char*) sleep_operation_to_string(arg_operation), | |
e2cc6eca LP |
180 | NULL |
181 | }; | |
b5084605 LP |
182 | static const char* const dirs[] = { |
183 | SYSTEM_SLEEP_PATH, | |
184 | NULL | |
185 | }; | |
e2cc6eca | 186 | |
7bdf56a2 | 187 | _cleanup_(hibernate_location_freep) HibernateLocation *hibernate_location = NULL; |
c8cd8ca3 LP |
188 | _cleanup_fclose_ FILE *f = NULL; |
189 | char **modes, **states; | |
7bdf56a2 | 190 | int r; |
6524990f | 191 | |
c8cd8ca3 LP |
192 | assert(sleep_config); |
193 | assert(operation >= 0); | |
194 | assert(operation < _SLEEP_OPERATION_MAX); | |
195 | assert(operation != SLEEP_SUSPEND_THEN_HIBERNATE); /* Handled by execute_s2h() instead */ | |
196 | ||
197 | states = sleep_config->states[operation]; | |
198 | modes = sleep_config->modes[operation]; | |
199 | ||
200 | if (strv_isempty(states)) | |
201 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
202 | "No sleep states configured for sleep operation %s, can't sleep.", | |
203 | sleep_operation_to_string(operation)); | |
204 | ||
19adb8a3 | 205 | /* This file is opened first, so that if we hit an error, |
09692409 | 206 | * we can abort before modifying any state. */ |
6edd7d0a | 207 | f = fopen("/sys/power/state", "we"); |
4a62c710 MS |
208 | if (!f) |
209 | return log_error_errno(errno, "Failed to open /sys/power/state: %m"); | |
6edd7d0a | 210 | |
57512c89 YW |
211 | setvbuf(f, NULL, _IONBF, 0); |
212 | ||
c02540dc | 213 | /* Configure hibernation settings if we are supposed to hibernate */ |
17c40b3a | 214 | if (!strv_isempty(modes)) { |
7bdf56a2 | 215 | r = find_hibernate_location(&hibernate_location); |
17c40b3a | 216 | if (r < 0) |
c02540dc LP |
217 | return log_error_errno(r, "Failed to find location to hibernate to: %m"); |
218 | if (r == 0) { /* 0 means: no hibernation location was configured in the kernel so far, let's | |
219 | * do it ourselves then. > 0 means: kernel already had a configured hibernation | |
220 | * location which we shouldn't touch. */ | |
7bdf56a2 ZS |
221 | r = write_hibernate_location_info(hibernate_location); |
222 | if (r < 0) | |
223 | return log_error_errno(r, "Failed to prepare for hibernation: %m"); | |
224 | } | |
2002d8cd | 225 | |
17c40b3a ML |
226 | r = write_mode(modes); |
227 | if (r < 0) | |
aea29a30 | 228 | return log_error_errno(r, "Failed to write mode to /sys/power/disk: %m"); |
17c40b3a | 229 | } |
19adb8a3 | 230 | |
c8cd8ca3 LP |
231 | /* Pass an action string to the call-outs. This is mostly our operation string, except if the |
232 | * hibernate step of s-t-h fails, in which case we communicate that with a separate action. */ | |
233 | if (!action) | |
234 | action = sleep_operation_to_string(operation); | |
235 | ||
ae463e4e ZS |
236 | r = setenv("SYSTEMD_SLEEP_ACTION", action, 1); |
237 | if (r != 0) | |
c3565fe8 | 238 | log_warning_errno(errno, "Error setting SYSTEMD_SLEEP_ACTION=%s, ignoring: %m", action); |
ae463e4e | 239 | |
aed98342 | 240 | (void) execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, arguments, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); |
ba0fb5ac | 241 | (void) lock_all_homes(); |
6edd7d0a | 242 | |
19adb8a3 | 243 | log_struct(LOG_INFO, |
2b044526 | 244 | "MESSAGE_ID=" SD_MESSAGE_SLEEP_START_STR, |
c8cd8ca3 LP |
245 | LOG_MESSAGE("Entering sleep state '%s'...", sleep_operation_to_string(operation)), |
246 | "SLEEP=%s", sleep_operation_to_string(arg_operation)); | |
19adb8a3 | 247 | |
2fd069b1 | 248 | r = write_state(&f, states); |
19adb8a3 | 249 | if (r < 0) |
14250f09 LP |
250 | log_struct_errno(LOG_ERR, r, |
251 | "MESSAGE_ID=" SD_MESSAGE_SLEEP_STOP_STR, | |
c8cd8ca3 LP |
252 | LOG_MESSAGE("Failed to put system to sleep. System resumed again: %m"), |
253 | "SLEEP=%s", sleep_operation_to_string(arg_operation)); | |
14250f09 LP |
254 | else |
255 | log_struct(LOG_INFO, | |
256 | "MESSAGE_ID=" SD_MESSAGE_SLEEP_STOP_STR, | |
c8cd8ca3 LP |
257 | LOG_MESSAGE("System returned from sleep state."), |
258 | "SLEEP=%s", sleep_operation_to_string(arg_operation)); | |
eb267289 | 259 | |
6edd7d0a | 260 | arguments[1] = (char*) "post"; |
aed98342 | 261 | (void) execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, arguments, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS); |
6edd7d0a | 262 | |
19adb8a3 ZJS |
263 | return r; |
264 | } | |
6edd7d0a | 265 | |
1afe3d71 | 266 | static int custom_timer_suspend(const SleepConfig *sleep_config) { |
4f58b656 | 267 | usec_t hibernate_timestamp; |
c58493c0 ML |
268 | int r; |
269 | ||
28ca9c24 | 270 | assert(sleep_config); |
c58493c0 | 271 | |
4f58b656 YW |
272 | hibernate_timestamp = usec_add(now(CLOCK_BOOTTIME), sleep_config->hibernate_delay_usec); |
273 | ||
e0b3a70f | 274 | while (battery_is_discharging_and_low() == 0) { |
de5d8b40 | 275 | _cleanup_hashmap_free_ Hashmap *last_capacity = NULL, *current_capacity = NULL; |
254d1313 | 276 | _cleanup_close_ int tfd = -EBADF; |
96d662fa | 277 | struct itimerspec ts = {}; |
2ed56afe | 278 | usec_t suspend_interval; |
96d662fa | 279 | bool woken_by_timer; |
96d662fa SS |
280 | |
281 | tfd = timerfd_create(CLOCK_BOOTTIME_ALARM, TFD_NONBLOCK|TFD_CLOEXEC); | |
282 | if (tfd < 0) | |
283 | return log_error_errno(errno, "Error creating timerfd: %m"); | |
284 | ||
d812e104 | 285 | /* Store current battery capacity before suspension */ |
746cf898 | 286 | r = fetch_batteries_capacity_by_name(&last_capacity); |
d812e104 | 287 | if (r < 0) |
96d662fa SS |
288 | return log_error_errno(r, "Error fetching battery capacity percentage: %m"); |
289 | ||
4f58b656 YW |
290 | if (hashmap_isempty(last_capacity)) |
291 | /* In case of no battery, system suspend interval will be set to HibernateDelaySec= or 2 hours. */ | |
f05b4bb9 MY |
292 | suspend_interval = timestamp_is_set(hibernate_timestamp) |
293 | ? sleep_config->hibernate_delay_usec : DEFAULT_HIBERNATE_DELAY_USEC_NO_BATTERY; | |
4f58b656 YW |
294 | else { |
295 | r = get_total_suspend_interval(last_capacity, &suspend_interval); | |
296 | if (r < 0) { | |
297 | log_debug_errno(r, "Failed to estimate suspend interval using previous discharge rate, ignoring: %m"); | |
298 | /* In case of any errors, especially when we do not know the battery | |
299 | * discharging rate, system suspend interval will be set to | |
300 | * SuspendEstimationSec=. */ | |
301 | suspend_interval = sleep_config->suspend_estimation_usec; | |
302 | } | |
2ed56afe | 303 | } |
746cf898 | 304 | |
4f58b656 | 305 | /* Do not suspend more than HibernateDelaySec= */ |
d812e104 | 306 | usec_t before_timestamp = now(CLOCK_BOOTTIME); |
4f58b656 YW |
307 | suspend_interval = MIN(suspend_interval, usec_sub_unsigned(hibernate_timestamp, before_timestamp)); |
308 | if (suspend_interval <= 0) | |
309 | break; /* system should hibernate */ | |
d812e104 | 310 | |
96d662fa SS |
311 | log_debug("Set timerfd wake alarm for %s", FORMAT_TIMESPAN(suspend_interval, USEC_PER_SEC)); |
312 | /* Wake alarm for system with or without battery to hibernate or estimate discharge rate whichever is applicable */ | |
313 | timespec_store(&ts.it_value, suspend_interval); | |
314 | ||
315 | if (timerfd_settime(tfd, 0, &ts, NULL) < 0) | |
316 | return log_error_errno(errno, "Error setting battery estimate timer: %m"); | |
317 | ||
318 | r = execute(sleep_config, SLEEP_SUSPEND, NULL); | |
319 | if (r < 0) | |
320 | return r; | |
c58493c0 | 321 | |
96d662fa SS |
322 | r = fd_wait_for_event(tfd, POLLIN, 0); |
323 | if (r < 0) | |
324 | return log_error_errno(r, "Error polling timerfd: %m"); | |
325 | /* Store fd_wait status */ | |
326 | woken_by_timer = FLAGS_SET(r, POLLIN); | |
327 | ||
746cf898 | 328 | r = fetch_batteries_capacity_by_name(¤t_capacity); |
d812e104 | 329 | if (r < 0 || hashmap_isempty(current_capacity)) { |
746cf898 | 330 | /* In case of no battery or error while getting charge level, no need to measure |
d812e104 YW |
331 | * discharge rate. Instead the system should wake up if it is manual wakeup or |
332 | * hibernate if this is a timer wakeup. */ | |
333 | if (r < 0) | |
334 | log_debug_errno(r, "Battery capacity percentage unavailable, cannot estimate discharge rate: %m"); | |
335 | else | |
336 | log_debug("No battery found."); | |
746cf898 SS |
337 | if (!woken_by_timer) |
338 | return 0; | |
96d662fa | 339 | break; |
746cf898 | 340 | } |
96d662fa | 341 | |
d812e104 | 342 | usec_t after_timestamp = now(CLOCK_BOOTTIME); |
099810a6 ZJS |
343 | log_debug("Attempting to estimate battery discharge rate after wakeup from %s sleep", |
344 | FORMAT_TIMESPAN(after_timestamp - before_timestamp, USEC_PER_HOUR)); | |
96d662fa | 345 | |
746cf898 SS |
346 | if (after_timestamp != before_timestamp) { |
347 | r = estimate_battery_discharge_rate_per_hour(last_capacity, current_capacity, before_timestamp, after_timestamp); | |
91ea7ebc | 348 | if (r < 0) |
746cf898 SS |
349 | log_warning_errno(r, "Failed to estimate and update battery discharge rate, ignoring: %m"); |
350 | } else | |
351 | log_debug("System woke up too early to estimate discharge rate"); | |
c58493c0 | 352 | |
96d662fa SS |
353 | if (!woken_by_timer) |
354 | /* Return as manual wakeup done. This also will return in case battery was charged during suspension */ | |
355 | return 0; | |
1afe3d71 SS |
356 | |
357 | r = check_wakeup_type(); | |
358 | if (r < 0) | |
359 | log_debug_errno(r, "Failed to check hardware wakeup type, ignoring: %m"); | |
360 | if (r > 0) { | |
361 | log_debug("wakeup type is APM timer"); | |
362 | /* system should hibernate */ | |
363 | break; | |
364 | } | |
365 | } | |
366 | ||
367 | return 1; | |
368 | } | |
369 | ||
f13f91f0 SS |
370 | /* Freeze when invoked and thaw on cleanup */ |
371 | static int freeze_thaw_user_slice(const char **method) { | |
372 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
373 | _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; | |
374 | int r; | |
375 | ||
376 | if (!method || !*method) | |
377 | return 0; | |
378 | ||
379 | r = bus_connect_system_systemd(&bus); | |
380 | if (r < 0) | |
381 | return log_debug_errno(r, "Failed to open connection to systemd: %m"); | |
382 | ||
f274f8bf | 383 | (void) sd_bus_set_method_call_timeout(bus, FREEZE_TIMEOUT); |
432a3211 | 384 | |
f13f91f0 SS |
385 | r = bus_call_method(bus, bus_systemd_mgr, *method, &error, NULL, "s", SPECIAL_USER_SLICE); |
386 | if (r < 0) | |
387 | return log_debug_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); | |
388 | ||
389 | return 1; | |
390 | } | |
391 | ||
1afe3d71 | 392 | static int execute_s2h(const SleepConfig *sleep_config) { |
efa736d3 | 393 | _unused_ _cleanup_(freeze_thaw_user_slice) const char *auto_method_thaw = "ThawUnit"; |
4f58b656 | 394 | int r; |
1afe3d71 SS |
395 | |
396 | assert(sleep_config); | |
397 | ||
f13f91f0 SS |
398 | r = freeze_thaw_user_slice(&(const char*) { "FreezeUnit" }); |
399 | if (r < 0) | |
400 | log_debug_errno(r, "Failed to freeze unit user.slice, ignoring: %m"); | |
f13f91f0 | 401 | |
4f58b656 YW |
402 | /* Only check if we have automated battery alarms if HibernateDelaySec= is not set, as in that case |
403 | * we'll busy poll for the configured interval instead */ | |
404 | if (!timestamp_is_set(sleep_config->hibernate_delay_usec)) { | |
405 | r = check_wakeup_type(); | |
406 | if (r < 0) | |
407 | log_debug_errno(r, "Failed to check hardware wakeup type, ignoring: %m"); | |
408 | else { | |
409 | r = battery_trip_point_alarm_exists(); | |
410 | if (r < 0) | |
411 | log_debug_errno(r, "Failed to check whether acpi_btp support is enabled or not, ignoring: %m"); | |
412 | } | |
413 | } else | |
414 | r = 0; /* Force fallback path */ | |
1afe3d71 | 415 | |
4f58b656 | 416 | if (r > 0) { /* If we have both wakeup alarms and battery trip point support, use them */ |
1afe3d71 SS |
417 | log_debug("Attempting to suspend..."); |
418 | r = execute(sleep_config, SLEEP_SUSPEND, NULL); | |
419 | if (r < 0) | |
420 | return r; | |
421 | ||
422 | r = check_wakeup_type(); | |
423 | if (r < 0) | |
424 | return log_debug_errno(r, "Failed to check hardware wakeup type: %m"); | |
425 | ||
426 | if (r == 0) | |
427 | /* For APM Timer wakeup, system should hibernate else wakeup */ | |
428 | return 0; | |
429 | } else { | |
430 | r = custom_timer_suspend(sleep_config); | |
3c3f4601 | 431 | if (r < 0) |
1afe3d71 | 432 | return log_debug_errno(r, "Suspend cycle with manual battery discharge rate estimation failed: %m"); |
3c3f4601 | 433 | if (r == 0) |
1afe3d71 SS |
434 | /* manual wakeup */ |
435 | return 0; | |
96d662fa | 436 | } |
1afe3d71 | 437 | /* For above custom timer, if 1 is returned, system will directly hibernate */ |
28ca9c24 | 438 | |
96d662fa | 439 | log_debug("Attempting to hibernate"); |
c8cd8ca3 | 440 | r = execute(sleep_config, SLEEP_HIBERNATE, NULL); |
f05e1ae6 | 441 | if (r < 0) { |
b0c035e3 | 442 | log_notice("Couldn't hibernate, will try to suspend again."); |
0f2d351f | 443 | |
c8cd8ca3 | 444 | r = execute(sleep_config, SLEEP_SUSPEND, "suspend-after-failed-hibernate"); |
0f2d351f | 445 | if (r < 0) |
b0c035e3 | 446 | return r; |
f05e1ae6 LP |
447 | } |
448 | ||
449 | return 0; | |
c58493c0 ML |
450 | } |
451 | ||
37ec0fdd LP |
452 | static int help(void) { |
453 | _cleanup_free_ char *link = NULL; | |
454 | int r; | |
455 | ||
456 | r = terminal_urlify_man("systemd-suspend.service", "8", &link); | |
457 | if (r < 0) | |
458 | return log_oom(); | |
459 | ||
19adb8a3 ZJS |
460 | printf("%s COMMAND\n\n" |
461 | "Suspend the system, hibernate the system, or both.\n\n" | |
37ec0fdd LP |
462 | " -h --help Show this help and exit\n" |
463 | " --version Print version string and exit\n" | |
464 | "\nCommands:\n" | |
465 | " suspend Suspend the system\n" | |
466 | " hibernate Hibernate the system\n" | |
467 | " hybrid-sleep Both hibernate and suspend the system\n" | |
e68c79db | 468 | " suspend-then-hibernate Initially suspend and then hibernate\n" |
37ec0fdd | 469 | " the system after a fixed period of time\n" |
bc556335 DDM |
470 | "\nSee the %s for details.\n", |
471 | program_invocation_short_name, | |
472 | link); | |
37ec0fdd LP |
473 | |
474 | return 0; | |
19adb8a3 | 475 | } |
6edd7d0a | 476 | |
19adb8a3 ZJS |
477 | static int parse_argv(int argc, char *argv[]) { |
478 | enum { | |
479 | ARG_VERSION = 0x100, | |
480 | }; | |
481 | ||
482 | static const struct option options[] = { | |
483 | { "help", no_argument, NULL, 'h' }, | |
484 | { "version", no_argument, NULL, ARG_VERSION }, | |
eb9da376 | 485 | {} |
19adb8a3 ZJS |
486 | }; |
487 | ||
488 | int c; | |
489 | ||
490 | assert(argc >= 0); | |
491 | assert(argv); | |
492 | ||
601185b4 | 493 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
79893116 | 494 | switch (c) { |
19adb8a3 | 495 | case 'h': |
37ec0fdd | 496 | return help(); |
19adb8a3 ZJS |
497 | |
498 | case ARG_VERSION: | |
3f6fd1ba | 499 | return version(); |
19adb8a3 ZJS |
500 | |
501 | case '?': | |
502 | return -EINVAL; | |
503 | ||
504 | default: | |
04499a70 | 505 | assert_not_reached(); |
19adb8a3 ZJS |
506 | } |
507 | ||
baaa35ad ZJS |
508 | if (argc - optind != 1) |
509 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
510 | "Usage: %s COMMAND", | |
511 | program_invocation_short_name); | |
19adb8a3 | 512 | |
c8cd8ca3 LP |
513 | arg_operation = sleep_operation_from_string(argv[optind]); |
514 | if (arg_operation < 0) | |
515 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown command '%s'.", argv[optind]); | |
19adb8a3 ZJS |
516 | |
517 | return 1 /* work to do */; | |
518 | } | |
519 | ||
7caefb81 | 520 | static int run(int argc, char *argv[]) { |
28ca9c24 | 521 | _cleanup_(free_sleep_configp) SleepConfig *sleep_config = NULL; |
19adb8a3 ZJS |
522 | int r; |
523 | ||
d2acb93d | 524 | log_setup(); |
19adb8a3 ZJS |
525 | |
526 | r = parse_argv(argc, argv); | |
527 | if (r <= 0) | |
7caefb81 | 528 | return r; |
19adb8a3 | 529 | |
28ca9c24 ZS |
530 | r = parse_sleep_config(&sleep_config); |
531 | if (r < 0) | |
532 | return r; | |
533 | ||
c8cd8ca3 | 534 | if (!sleep_config->allow[arg_operation]) |
baaa35ad | 535 | return log_error_errno(SYNTHETIC_ERRNO(EACCES), |
c8cd8ca3 LP |
536 | "Sleep operation \"%s\" is disabled by configuration, refusing.", |
537 | sleep_operation_to_string(arg_operation)); | |
e8f1d00d | 538 | |
3d132111 LP |
539 | switch (arg_operation) { |
540 | ||
541 | case SLEEP_SUSPEND_THEN_HIBERNATE: | |
542 | r = execute_s2h(sleep_config); | |
543 | break; | |
544 | ||
545 | case SLEEP_HYBRID_SLEEP: | |
546 | r = execute(sleep_config, SLEEP_HYBRID_SLEEP, NULL); | |
547 | if (r < 0) { | |
548 | /* If we can't hybrid sleep, then let's try to suspend at least. After all, the user | |
549 | * asked us to do both: suspend + hibernate, and it's almost certainly the | |
550 | * hibernation that failed, hence still do the other thing, the suspend. */ | |
551 | ||
552 | log_notice("Couldn't hybrid sleep, will try to suspend instead."); | |
553 | ||
554 | r = execute(sleep_config, SLEEP_SUSPEND, "suspend-after-failed-hybrid-sleep"); | |
555 | } | |
556 | ||
557 | break; | |
558 | ||
559 | default: | |
560 | r = execute(sleep_config, arg_operation, NULL); | |
561 | break; | |
562 | } | |
563 | ||
564 | return r; | |
6edd7d0a | 565 | } |
7caefb81 ZJS |
566 | |
567 | DEFINE_MAIN_FUNCTION(run); |