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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
Copyright 2010 Maarten Lankhorst
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <libudev.h>
typedef struct Swap Swap;
typedef enum SwapState {
SWAP_DEAD,
SWAP_ACTIVATING, /* /sbin/swapon is running, but the swap not yet enabled. */
SWAP_ACTIVATING_DONE, /* /sbin/swapon is running, and the swap is done. */
SWAP_ACTIVE,
SWAP_DEACTIVATING,
SWAP_ACTIVATING_SIGTERM,
SWAP_ACTIVATING_SIGKILL,
SWAP_DEACTIVATING_SIGTERM,
SWAP_DEACTIVATING_SIGKILL,
SWAP_FAILED,
_SWAP_STATE_MAX,
_SWAP_STATE_INVALID = -1
} SwapState;
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_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;
bool reset_cpu_usage: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;
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, struct udev_device *dev);
int swap_process_device_remove(Manager *m, struct udev_device *dev);
const char* swap_state_to_string(SwapState i) _const_;
SwapState swap_state_from_string(const char *s) _pure_;
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_;
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