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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:49:52 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:49:52 +0000 |
commit | 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch) | |
tree | 33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/core/swap.h | |
parent | Initial commit. (diff) | |
download | systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip |
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/core/swap.h')
-rw-r--r-- | src/core/swap.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/core/swap.h b/src/core/swap.h new file mode 100644 index 0000000..ef20f0f --- /dev/null +++ b/src/core/swap.h @@ -0,0 +1,103 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +/*** + Copyright © 2010 Maarten Lankhorst +***/ + +#include "sd-device.h" + +#include "pidref.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 = -EINVAL, +} 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 = -EINVAL, +} SwapResult; + +typedef struct SwapParameters { + char *what; + char *options; + int priority; + bool priority_set; +} 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; + SwapResult clean_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; + PidRef 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); + +int swap_get_priority(const Swap *s); +const char* swap_get_options(const Swap *s); + +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); |