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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include "strv.h"
#include "time-util.h"
typedef enum SleepOperation {
SLEEP_SUSPEND,
SLEEP_HIBERNATE,
SLEEP_HYBRID_SLEEP,
_SLEEP_OPERATION_CONFIG_MAX,
/* The operations above require configuration for mode and state. The ones below are "combined"
* operations that use config from those individual operations. */
SLEEP_SUSPEND_THEN_HIBERNATE,
_SLEEP_OPERATION_MAX,
_SLEEP_OPERATION_INVALID = -EINVAL,
} SleepOperation;
const char* sleep_operation_to_string(SleepOperation s) _const_;
SleepOperation sleep_operation_from_string(const char *s) _pure_;
static inline bool SLEEP_OPERATION_IS_HIBERNATION(SleepOperation operation) {
return IN_SET(operation, SLEEP_HIBERNATE, SLEEP_HYBRID_SLEEP);
}
typedef struct SleepConfig {
bool allow[_SLEEP_OPERATION_MAX];
char **states[_SLEEP_OPERATION_CONFIG_MAX];
char **modes[_SLEEP_OPERATION_CONFIG_MAX]; /* Power mode after writing hibernation image (/sys/power/disk) */
char **mem_modes; /* /sys/power/mem_sleep */
usec_t hibernate_delay_usec;
usec_t suspend_estimation_usec;
} SleepConfig;
SleepConfig* sleep_config_free(SleepConfig *sc);
DEFINE_TRIVIAL_CLEANUP_FUNC(SleepConfig*, sleep_config_free);
int parse_sleep_config(SleepConfig **sleep_config);
static inline bool SLEEP_NEEDS_MEM_SLEEP(const SleepConfig *sc, SleepOperation operation) {
assert(sc);
assert(operation >= 0 && operation < _SLEEP_OPERATION_CONFIG_MAX);
/* As per https://docs.kernel.org/admin-guide/pm/sleep-states.html#basic-sysfs-interfaces-for-system-suspend-and-hibernation,
* /sys/power/mem_sleep is honored if /sys/power/state is set to "mem" (common for suspend)
* or /sys/power/disk is set to "suspend" (hybrid-sleep). */
return strv_contains(sc->states[operation], "mem") ||
strv_contains(sc->modes[operation], "suspend");
}
typedef enum SleepSupport {
SLEEP_SUPPORTED,
SLEEP_DISABLED, /* Disabled in SleepConfig.allow */
SLEEP_NOT_CONFIGURED, /* SleepConfig.states is not configured */
SLEEP_STATE_OR_MODE_NOT_SUPPORTED, /* SleepConfig.states/modes are not supported by kernel */
SLEEP_RESUME_NOT_SUPPORTED,
SLEEP_RESUME_DEVICE_MISSING, /* resume= is specified, but the device cannot be found in /proc/swaps */
SLEEP_RESUME_MISCONFIGURED, /* resume= is not set yet resume_offset= is configured */
SLEEP_NOT_ENOUGH_SWAP_SPACE,
SLEEP_ALARM_NOT_SUPPORTED, /* CLOCK_BOOTTIME_ALARM is unsupported by kernel (only used by s2h) */
} SleepSupport;
int sleep_supported_full(SleepOperation operation, SleepSupport *ret_support);
static inline int sleep_supported(SleepOperation operation) {
return sleep_supported_full(operation, NULL);
}
/* Only for test-sleep-config */
int sleep_state_supported(char * const *states);
int sleep_mode_supported(const char *path, char * const *modes);
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