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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
Copyright © 2010 Maarten Lankhorst
***/
#include "sd-device.h"
#include "unit.h"
typedef struct Swap Swap;
typedef enum SwapExecCommand {
SWAP_EXEC_ACTIVATE,
SWAP_EXEC_DEACTIVATE,
_SWAP_EXEC_COMMAND_MAX,
_SWAP_EXEC_COMMAND_INVALID = -1
} SwapExecCommand;
typedef enum SwapResult {
SWAP_SUCCESS,
SWAP_FAILURE_RESOURCES,
SWAP_FAILURE_TIMEOUT,
SWAP_FAILURE_EXIT_CODE,
SWAP_FAILURE_SIGNAL,
SWAP_FAILURE_CORE_DUMP,
SWAP_FAILURE_START_LIMIT_HIT,
_SWAP_RESULT_MAX,
_SWAP_RESULT_INVALID = -1
} SwapResult;
typedef struct SwapParameters {
char *what;
char *options;
int priority;
} SwapParameters;
struct Swap {
Unit meta;
char *what;
/* If the device has already shown up, this is the device
* node, which might be different from what, due to
* symlinks */
char *devnode;
SwapParameters parameters_proc_swaps;
SwapParameters parameters_fragment;
bool from_proc_swaps:1;
bool from_fragment:1;
/* Used while looking for swaps that vanished or got added
* from/to /proc/swaps */
bool is_active:1;
bool just_activated:1;
SwapResult result;
usec_t timeout_usec;
ExecCommand exec_command[_SWAP_EXEC_COMMAND_MAX];
ExecContext exec_context;
KillContext kill_context;
CGroupContext cgroup_context;
ExecRuntime *exec_runtime;
DynamicCreds dynamic_creds;
SwapState state, deserialized_state;
ExecCommand* control_command;
SwapExecCommand control_command_id;
pid_t control_pid;
sd_event_source *timer_event_source;
/* In order to be able to distinguish dependencies on
different device nodes we might end up creating multiple
devices for the same swap. We chain them up here. */
LIST_FIELDS(struct Swap, same_devnode);
};
extern const UnitVTable swap_vtable;
int swap_process_device_new(Manager *m, sd_device *dev);
int swap_process_device_remove(Manager *m, sd_device *dev);
const char* swap_exec_command_to_string(SwapExecCommand i) _const_;
SwapExecCommand swap_exec_command_from_string(const char *s) _pure_;
const char* swap_result_to_string(SwapResult i) _const_;
SwapResult swap_result_from_string(const char *s) _pure_;
DEFINE_CAST(SWAP, Swap);
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