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Diffstat (limited to 'src/basic/unit-def.h')
| -rw-r--r-- | src/basic/unit-def.h | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/src/basic/unit-def.h b/src/basic/unit-def.h new file mode 100644 index 0000000..5fcd51c --- /dev/null +++ b/src/basic/unit-def.h @@ -0,0 +1,335 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <stdbool.h> + +#include "errno-list.h" +#include "glyph-util.h" +#include "macro.h" + +/* The enum order is used to order unit jobs in the job queue + * when other criteria (cpu weight, nice level) are identical. + * In this case service units have the highest priority. */ +typedef enum UnitType { + UNIT_SERVICE, + UNIT_MOUNT, + UNIT_SWAP, + UNIT_SOCKET, + UNIT_TARGET, + UNIT_DEVICE, + UNIT_AUTOMOUNT, + UNIT_TIMER, + UNIT_PATH, + UNIT_SLICE, + UNIT_SCOPE, + _UNIT_TYPE_MAX, + _UNIT_TYPE_INVALID = -EINVAL, + _UNIT_TYPE_ERRNO_MAX = -ERRNO_MAX, /* Ensure the whole errno range fits into this enum */ +} UnitType; + +typedef enum UnitLoadState { + UNIT_STUB, + UNIT_LOADED, + UNIT_NOT_FOUND, /* error condition #1: unit file not found */ + UNIT_BAD_SETTING, /* error condition #2: we couldn't parse some essential unit file setting */ + UNIT_ERROR, /* error condition #3: other "system" error, catchall for the rest */ + UNIT_MERGED, + UNIT_MASKED, + _UNIT_LOAD_STATE_MAX, + _UNIT_LOAD_STATE_INVALID = -EINVAL, +} UnitLoadState; + +typedef enum UnitActiveState { + UNIT_ACTIVE, + UNIT_RELOADING, + UNIT_INACTIVE, + UNIT_FAILED, + UNIT_ACTIVATING, + UNIT_DEACTIVATING, + UNIT_MAINTENANCE, + _UNIT_ACTIVE_STATE_MAX, + _UNIT_ACTIVE_STATE_INVALID = -EINVAL, +} UnitActiveState; + +typedef enum FreezerState { + FREEZER_RUNNING, + FREEZER_FREEZING, + FREEZER_FROZEN, + FREEZER_THAWING, + _FREEZER_STATE_MAX, + _FREEZER_STATE_INVALID = -EINVAL, +} FreezerState; + +typedef enum UnitMarker { + UNIT_MARKER_NEEDS_RELOAD, + UNIT_MARKER_NEEDS_RESTART, + _UNIT_MARKER_MAX, + _UNIT_MARKER_INVALID = -EINVAL, +} UnitMarker; + +typedef enum AutomountState { + AUTOMOUNT_DEAD, + AUTOMOUNT_WAITING, + AUTOMOUNT_RUNNING, + AUTOMOUNT_FAILED, + _AUTOMOUNT_STATE_MAX, + _AUTOMOUNT_STATE_INVALID = -EINVAL, +} AutomountState; + +/* We simply watch devices, we cannot plug/unplug them. That + * simplifies the state engine greatly */ +typedef enum DeviceState { + DEVICE_DEAD, + DEVICE_TENTATIVE, /* mounted or swapped, but not (yet) announced by udev */ + DEVICE_PLUGGED, /* announced by udev */ + _DEVICE_STATE_MAX, + _DEVICE_STATE_INVALID = -EINVAL, +} DeviceState; + +typedef enum MountState { + MOUNT_DEAD, + MOUNT_MOUNTING, /* /usr/bin/mount is running, but the mount is not done yet. */ + MOUNT_MOUNTING_DONE, /* /usr/bin/mount is running, and the mount is done. */ + MOUNT_MOUNTED, + MOUNT_REMOUNTING, + MOUNT_UNMOUNTING, + MOUNT_REMOUNTING_SIGTERM, + MOUNT_REMOUNTING_SIGKILL, + MOUNT_UNMOUNTING_SIGTERM, + MOUNT_UNMOUNTING_SIGKILL, + MOUNT_FAILED, + MOUNT_CLEANING, + _MOUNT_STATE_MAX, + _MOUNT_STATE_INVALID = -EINVAL, +} MountState; + +typedef enum PathState { + PATH_DEAD, + PATH_WAITING, + PATH_RUNNING, + PATH_FAILED, + _PATH_STATE_MAX, + _PATH_STATE_INVALID = -EINVAL, +} PathState; + +typedef enum ScopeState { + SCOPE_DEAD, + SCOPE_START_CHOWN, + SCOPE_RUNNING, + SCOPE_ABANDONED, + SCOPE_STOP_SIGTERM, + SCOPE_STOP_SIGKILL, + SCOPE_FAILED, + _SCOPE_STATE_MAX, + _SCOPE_STATE_INVALID = -EINVAL, +} ScopeState; + +typedef enum ServiceState { + SERVICE_DEAD, + SERVICE_CONDITION, + SERVICE_START_PRE, + SERVICE_START, + SERVICE_START_POST, + SERVICE_RUNNING, + SERVICE_EXITED, /* Nothing is running anymore, but RemainAfterExit is true hence this is OK */ + SERVICE_RELOAD, + SERVICE_STOP, /* No STOP_PRE state, instead just register multiple STOP executables */ + SERVICE_STOP_WATCHDOG, + SERVICE_STOP_SIGTERM, + SERVICE_STOP_SIGKILL, + SERVICE_STOP_POST, + SERVICE_FINAL_WATCHDOG, /* In case the STOP_POST executable needs to be aborted. */ + SERVICE_FINAL_SIGTERM, /* In case the STOP_POST executable hangs, we shoot that down, too */ + SERVICE_FINAL_SIGKILL, + SERVICE_FAILED, + SERVICE_AUTO_RESTART, + SERVICE_CLEANING, + _SERVICE_STATE_MAX, + _SERVICE_STATE_INVALID = -EINVAL, +} ServiceState; + +typedef enum SliceState { + SLICE_DEAD, + SLICE_ACTIVE, + _SLICE_STATE_MAX, + _SLICE_STATE_INVALID = -EINVAL, +} SliceState; + +typedef enum SocketState { + SOCKET_DEAD, + SOCKET_START_PRE, + SOCKET_START_CHOWN, + SOCKET_START_POST, + SOCKET_LISTENING, + SOCKET_RUNNING, + SOCKET_STOP_PRE, + SOCKET_STOP_PRE_SIGTERM, + SOCKET_STOP_PRE_SIGKILL, + SOCKET_STOP_POST, + SOCKET_FINAL_SIGTERM, + SOCKET_FINAL_SIGKILL, + SOCKET_FAILED, + SOCKET_CLEANING, + _SOCKET_STATE_MAX, + _SOCKET_STATE_INVALID = -EINVAL, +} SocketState; + +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_DEACTIVATING_SIGTERM, + SWAP_DEACTIVATING_SIGKILL, + SWAP_FAILED, + SWAP_CLEANING, + _SWAP_STATE_MAX, + _SWAP_STATE_INVALID = -EINVAL, +} SwapState; + +typedef enum TargetState { + TARGET_DEAD, + TARGET_ACTIVE, + _TARGET_STATE_MAX, + _TARGET_STATE_INVALID = -EINVAL, +} TargetState; + +typedef enum TimerState { + TIMER_DEAD, + TIMER_WAITING, + TIMER_RUNNING, + TIMER_ELAPSED, + TIMER_FAILED, + _TIMER_STATE_MAX, + _TIMER_STATE_INVALID = -EINVAL, +} TimerState; + +typedef enum UnitDependency { + /* Positive dependencies */ + UNIT_REQUIRES, + UNIT_REQUISITE, + UNIT_WANTS, + UNIT_BINDS_TO, + UNIT_PART_OF, + UNIT_UPHOLDS, + + /* Inverse of the above */ + UNIT_REQUIRED_BY, /* inverse of 'requires' is 'required_by' */ + UNIT_REQUISITE_OF, /* inverse of 'requisite' is 'requisite_of' */ + UNIT_WANTED_BY, /* inverse of 'wants' */ + UNIT_BOUND_BY, /* inverse of 'binds_to' */ + UNIT_CONSISTS_OF, /* inverse of 'part_of' */ + UNIT_UPHELD_BY, /* inverse of 'uphold' */ + + /* Negative dependencies */ + UNIT_CONFLICTS, /* inverse of 'conflicts' is 'conflicted_by' */ + UNIT_CONFLICTED_BY, + + /* Order */ + UNIT_BEFORE, /* inverse of 'before' is 'after' and vice versa */ + UNIT_AFTER, + + /* OnSuccess= + OnFailure= */ + UNIT_ON_SUCCESS, + UNIT_ON_SUCCESS_OF, + UNIT_ON_FAILURE, + UNIT_ON_FAILURE_OF, + + /* Triggers (i.e. a socket triggers a service) */ + UNIT_TRIGGERS, + UNIT_TRIGGERED_BY, + + /* Propagate reloads */ + UNIT_PROPAGATES_RELOAD_TO, + UNIT_RELOAD_PROPAGATED_FROM, + + /* Propagate stops */ + UNIT_PROPAGATES_STOP_TO, + UNIT_STOP_PROPAGATED_FROM, + + /* Joins namespace of */ + UNIT_JOINS_NAMESPACE_OF, + + /* Reference information for GC logic */ + UNIT_REFERENCES, /* Inverse of 'references' is 'referenced_by' */ + UNIT_REFERENCED_BY, + + /* Slice= */ + UNIT_IN_SLICE, + UNIT_SLICE_OF, + + _UNIT_DEPENDENCY_MAX, + _UNIT_DEPENDENCY_INVALID = -EINVAL, +} UnitDependency; + +typedef enum NotifyAccess { + NOTIFY_NONE, + NOTIFY_ALL, + NOTIFY_MAIN, + NOTIFY_EXEC, + _NOTIFY_ACCESS_MAX, + _NOTIFY_ACCESS_INVALID = -EINVAL, +} NotifyAccess; + +char *unit_dbus_path_from_name(const char *name); +int unit_name_from_dbus_path(const char *path, char **name); + +const char* unit_dbus_interface_from_type(UnitType t); +const char *unit_dbus_interface_from_name(const char *name); + +const char *unit_type_to_string(UnitType i) _const_; +UnitType unit_type_from_string(const char *s) _pure_; + +const char *unit_load_state_to_string(UnitLoadState i) _const_; +UnitLoadState unit_load_state_from_string(const char *s) _pure_; + +const char *unit_active_state_to_string(UnitActiveState i) _const_; +UnitActiveState unit_active_state_from_string(const char *s) _pure_; + +const char *freezer_state_to_string(FreezerState i) _const_; +FreezerState freezer_state_from_string(const char *s) _pure_; + +const char *unit_marker_to_string(UnitMarker m) _const_; +UnitMarker unit_marker_from_string(const char *s) _pure_; + +const char* automount_state_to_string(AutomountState i) _const_; +AutomountState automount_state_from_string(const char *s) _pure_; + +const char* device_state_to_string(DeviceState i) _const_; +DeviceState device_state_from_string(const char *s) _pure_; + +const char* mount_state_to_string(MountState i) _const_; +MountState mount_state_from_string(const char *s) _pure_; + +const char* path_state_to_string(PathState i) _const_; +PathState path_state_from_string(const char *s) _pure_; + +const char* scope_state_to_string(ScopeState i) _const_; +ScopeState scope_state_from_string(const char *s) _pure_; + +const char* service_state_to_string(ServiceState i) _const_; +ServiceState service_state_from_string(const char *s) _pure_; + +const char* slice_state_to_string(SliceState i) _const_; +SliceState slice_state_from_string(const char *s) _pure_; + +const char* socket_state_to_string(SocketState i) _const_; +SocketState socket_state_from_string(const char *s) _pure_; + +const char* swap_state_to_string(SwapState i) _const_; +SwapState swap_state_from_string(const char *s) _pure_; + +const char* target_state_to_string(TargetState i) _const_; +TargetState target_state_from_string(const char *s) _pure_; + +const char *timer_state_to_string(TimerState i) _const_; +TimerState timer_state_from_string(const char *s) _pure_; + +const char *unit_dependency_to_string(UnitDependency i) _const_; +UnitDependency unit_dependency_from_string(const char *s) _pure_; + +const char* notify_access_to_string(NotifyAccess i) _const_; +NotifyAccess notify_access_from_string(const char *s) _pure_; + +SpecialGlyph unit_active_state_to_glyph(UnitActiveState state); |