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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
07b0b134 | 2 | |
c2f1db8f | 3 | #pragma once |
07b0b134 ML |
4 | |
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | Copyright 2010 Maarten Lankhorst | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
07b0b134 ML |
14 | (at your option) any later version. |
15 | ||
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 | |
5430f7f2 | 19 | Lesser General Public License for more details. |
07b0b134 | 20 | |
5430f7f2 | 21 | You should have received a copy of the GNU Lesser General Public License |
07b0b134 ML |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
23 | ***/ | |
24 | ||
9670d583 LP |
25 | #include <libudev.h> |
26 | ||
07b0b134 ML |
27 | typedef struct Swap Swap; |
28 | ||
29 | #include "unit.h" | |
30 | ||
31 | typedef enum SwapState { | |
32 | SWAP_DEAD, | |
5bcb0f2b LP |
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. */ | |
07b0b134 | 35 | SWAP_ACTIVE, |
e04aad61 LP |
36 | SWAP_DEACTIVATING, |
37 | SWAP_ACTIVATING_SIGTERM, | |
38 | SWAP_ACTIVATING_SIGKILL, | |
39 | SWAP_DEACTIVATING_SIGTERM, | |
40 | SWAP_DEACTIVATING_SIGKILL, | |
fdf20a31 | 41 | SWAP_FAILED, |
07b0b134 ML |
42 | _SWAP_STATE_MAX, |
43 | _SWAP_STATE_INVALID = -1 | |
44 | } SwapState; | |
45 | ||
e04aad61 LP |
46 | typedef enum SwapExecCommand { |
47 | SWAP_EXEC_ACTIVATE, | |
48 | SWAP_EXEC_DEACTIVATE, | |
49 | _SWAP_EXEC_COMMAND_MAX, | |
50 | _SWAP_EXEC_COMMAND_INVALID = -1 | |
51 | } SwapExecCommand; | |
52 | ||
e1770af8 LP |
53 | typedef enum SwapResult { |
54 | SWAP_SUCCESS, | |
55 | SWAP_FAILURE_RESOURCES, | |
56 | SWAP_FAILURE_TIMEOUT, | |
57 | SWAP_FAILURE_EXIT_CODE, | |
58 | SWAP_FAILURE_SIGNAL, | |
59 | SWAP_FAILURE_CORE_DUMP, | |
60 | _SWAP_RESULT_MAX, | |
61 | _SWAP_RESULT_INVALID = -1 | |
62 | } SwapResult; | |
63 | ||
5bcb0f2b LP |
64 | typedef struct SwapParameters { |
65 | char *what; | |
66 | int priority; | |
67 | bool noauto:1; | |
68 | bool nofail:1; | |
69 | } SwapParameters; | |
70 | ||
07b0b134 | 71 | struct Swap { |
ac155bb8 | 72 | Unit meta; |
07b0b134 | 73 | |
e04aad61 LP |
74 | char *what; |
75 | ||
9670d583 LP |
76 | /* If the device has already shown up, this is the device |
77 | * node, which might be different from what, due to | |
78 | * symlinks */ | |
79 | char *devnode; | |
80 | ||
4e85aff4 LP |
81 | SwapParameters parameters_proc_swaps; |
82 | SwapParameters parameters_fragment; | |
07b0b134 | 83 | |
4e85aff4 LP |
84 | bool from_proc_swaps:1; |
85 | bool from_fragment:1; | |
e04aad61 | 86 | |
e04aad61 LP |
87 | /* Used while looking for swaps that vanished or got added |
88 | * from/to /proc/swaps */ | |
89 | bool is_active:1; | |
90 | bool just_activated:1; | |
91 | ||
e1770af8 LP |
92 | SwapResult result; |
93 | ||
e04aad61 LP |
94 | usec_t timeout_usec; |
95 | ||
96 | ExecCommand exec_command[_SWAP_EXEC_COMMAND_MAX]; | |
97 | ExecContext exec_context; | |
4819ff03 | 98 | KillContext kill_context; |
4ad49000 | 99 | CGroupContext cgroup_context; |
e04aad61 | 100 | |
613b411c LP |
101 | ExecRuntime *exec_runtime; |
102 | ||
e04aad61 LP |
103 | SwapState state, deserialized_state; |
104 | ||
105 | ExecCommand* control_command; | |
106 | SwapExecCommand control_command_id; | |
107 | pid_t control_pid; | |
108 | ||
718db961 | 109 | sd_event_source *timer_event_source; |
e04aad61 | 110 | |
35b8ca3a | 111 | /* In order to be able to distinguish dependencies on |
e04aad61 LP |
112 | different device nodes we might end up creating multiple |
113 | devices for the same swap. We chain them up here. */ | |
114 | ||
9670d583 | 115 | LIST_FIELDS(struct Swap, same_devnode); |
07b0b134 ML |
116 | }; |
117 | ||
118 | extern const UnitVTable swap_vtable; | |
119 | ||
9670d583 LP |
120 | int swap_process_new_device(Manager *m, struct udev_device *dev); |
121 | int swap_process_removed_device(Manager *m, struct udev_device *dev); | |
122 | ||
44a6b1b6 ZJS |
123 | const char* swap_state_to_string(SwapState i) _const_; |
124 | SwapState swap_state_from_string(const char *s) _pure_; | |
07b0b134 | 125 | |
44a6b1b6 ZJS |
126 | const char* swap_exec_command_to_string(SwapExecCommand i) _const_; |
127 | SwapExecCommand swap_exec_command_from_string(const char *s) _pure_; | |
07b0b134 | 128 | |
44a6b1b6 ZJS |
129 | const char* swap_result_to_string(SwapResult i) _const_; |
130 | SwapResult swap_result_from_string(const char *s) _pure_; |