1 files changed, 75 insertions, 0 deletions
diff --git a/src/shared/sleep-config.h b/src/shared/sleep-config.h
new file mode 100644
index 0000000..44e4e47
--- /dev/null
+++ b/src/shared/sleep-config.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <linux/fiemap.h>
+
+#include "hashmap.h"
+#include "time-util.h"
+
+#define DEFAULT_SUSPEND_ESTIMATION_USEC (1 * USEC_PER_HOUR)
+
+typedef enum SleepOperation {
+        SLEEP_SUSPEND,
+        SLEEP_HIBERNATE,
+        SLEEP_HYBRID_SLEEP,
+        SLEEP_SUSPEND_THEN_HIBERNATE,
+        _SLEEP_OPERATION_MAX,
+        _SLEEP_OPERATION_INVALID = -EINVAL,
+} SleepOperation;
+
+typedef struct SleepConfig {
+        bool allow[_SLEEP_OPERATION_MAX];
+        char **modes[_SLEEP_OPERATION_MAX];
+        char **states[_SLEEP_OPERATION_MAX];
+        usec_t hibernate_delay_usec;
+        usec_t suspend_estimation_usec;
+} SleepConfig;
+
+SleepConfig* free_sleep_config(SleepConfig *sc);
+DEFINE_TRIVIAL_CLEANUP_FUNC(SleepConfig*, free_sleep_config);
+
+/* entry in /proc/swaps */
+typedef struct SwapEntry {
+        char *device;
+        char *type;
+        uint64_t size;
+        uint64_t used;
+        int priority;
+} SwapEntry;
+
+SwapEntry* swap_entry_free(SwapEntry *se);
+DEFINE_TRIVIAL_CLEANUP_FUNC(SwapEntry*, swap_entry_free);
+
+/*
+ * represents values for /sys/power/resume & /sys/power/resume_offset
+ * and the matching /proc/swap entry.
+ */
+typedef struct HibernateLocation {
+        dev_t devno;
+        uint64_t offset;
+        SwapEntry *swap;
+} HibernateLocation;
+
+HibernateLocation* hibernate_location_free(HibernateLocation *hl);
+DEFINE_TRIVIAL_CLEANUP_FUNC(HibernateLocation*, hibernate_location_free);
+
+int read_fiemap(int fd, struct fiemap **ret);
+int parse_sleep_config(SleepConfig **sleep_config);
+int find_hibernate_location(HibernateLocation **ret_hibernate_location);
+
+int can_sleep(SleepOperation operation);
+int can_sleep_disk(char **types);
+int can_sleep_state(char **types);
+int battery_is_discharging_and_low(void);
+int get_total_suspend_interval(Hashmap *last_capacity, usec_t *ret);
+int fetch_batteries_capacity_by_name(Hashmap **ret_current_capacity);
+int estimate_battery_discharge_rate_per_hour(
+                Hashmap *last_capacity,
+                Hashmap *current_capacity,
+                usec_t before_timestamp,
+                usec_t after_timestamp);
+int check_wakeup_type(void);
+int battery_trip_point_alarm_exists(void);
+
+const char* sleep_operation_to_string(SleepOperation s) _const_;
+SleepOperation sleep_operation_from_string(const char *s) _pure_;