1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
9 Copyright 2010 Maarten Lankhorst
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU Lesser General Public License as published by
13 the Free Software Foundation; either version 2.1 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 Lesser General Public License for more details.
21 You should have received a copy of the GNU Lesser General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 typedef struct Swap Swap;
31 typedef enum SwapState {
33 SWAP_ACTIVATING, /* /sbin/swapon is running, but the swap not yet enabled. */
34 SWAP_ACTIVATING_DONE, /* /sbin/swapon is running, and the swap is done. */
37 SWAP_ACTIVATING_SIGTERM,
38 SWAP_ACTIVATING_SIGKILL,
39 SWAP_DEACTIVATING_SIGTERM,
40 SWAP_DEACTIVATING_SIGKILL,
43 _SWAP_STATE_INVALID = -1
46 typedef enum SwapExecCommand {
49 _SWAP_EXEC_COMMAND_MAX,
50 _SWAP_EXEC_COMMAND_INVALID = -1
53 typedef enum SwapResult {
55 SWAP_FAILURE_RESOURCES,
57 SWAP_FAILURE_EXIT_CODE,
59 SWAP_FAILURE_CORE_DUMP,
61 _SWAP_RESULT_INVALID = -1
64 typedef struct SwapParameters {
77 /* If the device has already shown up, this is the device
78 * node, which might be different from what, due to
82 SwapParameters parameters_proc_swaps;
83 SwapParameters parameters_fragment;
85 bool from_proc_swaps:1;
88 /* Used while looking for swaps that vanished or got added
89 * from/to /proc/swaps */
91 bool just_activated:1;
97 ExecCommand exec_command[_SWAP_EXEC_COMMAND_MAX];
98 ExecContext exec_context;
99 KillContext kill_context;
100 CGroupContext cgroup_context;
102 ExecRuntime *exec_runtime;
104 SwapState state, deserialized_state;
106 ExecCommand* control_command;
107 SwapExecCommand control_command_id;
110 sd_event_source *timer_event_source;
112 /* In order to be able to distinguish dependencies on
113 different device nodes we might end up creating multiple
114 devices for the same swap. We chain them up here. */
116 LIST_FIELDS(struct Swap, same_devnode);
119 extern const UnitVTable swap_vtable;
121 int swap_process_new_device(Manager *m, struct udev_device *dev);
122 int swap_process_removed_device(Manager *m, struct udev_device *dev);
124 const char* swap_state_to_string(SwapState i) _const_;
125 SwapState swap_state_from_string(const char *s) _pure_;
127 const char* swap_exec_command_to_string(SwapExecCommand i) _const_;
128 SwapExecCommand swap_exec_command_from_string(const char *s) _pure_;
130 const char* swap_result_to_string(SwapResult i) _const_;
131 SwapResult swap_result_from_string(const char *s) _pure_;