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Diffstat (limited to 'src/core/unit-dependency-atom.h')
| -rw-r--r-- | src/core/unit-dependency-atom.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/core/unit-dependency-atom.h b/src/core/unit-dependency-atom.h new file mode 100644 index 0000000..02532e5 --- /dev/null +++ b/src/core/unit-dependency-atom.h @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <errno.h> + +#include "unit-def.h" + +/* Flags that identify the various "atomic" behaviours a specific dependency type implies. Each dependency is + * a combination of one or more of these flags that define what they actually entail. */ +typedef enum UnitDependencyAtom { + + /* This unit pulls in the other unit as JOB_START job into the transaction, and if that doesn't work + * the transaction fails. */ + UNIT_ATOM_PULL_IN_START = UINT64_C(1) << 0, + /* Similar, but if it doesn't work, ignore. */ + UNIT_ATOM_PULL_IN_START_IGNORED = UINT64_C(1) << 1, + /* Pull in a JOB_VERIFY job into the transaction, i.e. pull in JOB_VERIFY rather than + * JOB_START. i.e. check the unit is started but don't pull it in. */ + UNIT_ATOM_PULL_IN_VERIFY = UINT64_C(1) << 2, + + /* Pull in a JOB_STOP job for the other job into transactions, and fail if that doesn't work. */ + UNIT_ATOM_PULL_IN_STOP = UINT64_C(1) << 3, + /* Same, but don't fail, ignore it. */ + UNIT_ATOM_PULL_IN_STOP_IGNORED = UINT64_C(1) << 4, + + /* If our enters inactive state, add the other unit to the StopWhenUneeded= queue */ + UNIT_ATOM_ADD_STOP_WHEN_UNNEEDED_QUEUE = UINT64_C(1) << 5, + /* Pin the other unit i.e. ensure StopWhenUneeded= won't trigger for the other unit as long as we are + * not in inactive state */ + UNIT_ATOM_PINS_STOP_WHEN_UNNEEDED = UINT64_C(1) << 6, + + /* Stop our unit if the other unit happens to inactive */ + UNIT_ATOM_CANNOT_BE_ACTIVE_WITHOUT = UINT64_C(1) << 7, + /* If our unit enters inactive state, add the other unit to the BoundBy= queue */ + UNIT_ATOM_ADD_CANNOT_BE_ACTIVE_WITHOUT_QUEUE = UINT64_C(1) << 8, + + /* Start this unit whenever we find it inactive and the other unit active */ + UNIT_ATOM_START_STEADILY = UINT64_C(1) << 9, + /* Whenever our unit becomes active, add other unit to start_when_upheld_queue */ + UNIT_ATOM_ADD_START_WHEN_UPHELD_QUEUE = UINT64_C(1) << 10, + + /* If our unit unexpectedly becomes active, retroactively start the other unit too, in "replace" job + * mode */ + UNIT_ATOM_RETROACTIVE_START_REPLACE = UINT64_C(1) << 11, + /* Similar, but in "fail" job mode */ + UNIT_ATOM_RETROACTIVE_START_FAIL = UINT64_C(1) << 12, + /* If our unit unexpectedly becomes active, retroactively stop the other unit too */ + UNIT_ATOM_RETROACTIVE_STOP_ON_START = UINT64_C(1) << 13, + /* If our unit unexpectedly becomes inactive, retroactively stop the other unit too */ + UNIT_ATOM_RETROACTIVE_STOP_ON_STOP = UINT64_C(1) << 14, + + /* If a start job for this unit fails, propagate the failure to start job of other unit too */ + UNIT_ATOM_PROPAGATE_START_FAILURE = UINT64_C(1) << 15, + /* If a stop job for this unit fails, propagate the failure to any stop job of the other unit too */ + UNIT_ATOM_PROPAGATE_STOP_FAILURE = UINT64_C(1) << 16, + /* If our start job succeeded but the unit is inactive then (think: oneshot units), propagate this as + * failure to the other unit. */ + UNIT_ATOM_PROPAGATE_INACTIVE_START_AS_FAILURE = UINT64_C(1) << 17, + /* When putting together a transaction, propagate JOB_STOP from our unit to the other. */ + UNIT_ATOM_PROPAGATE_STOP = UINT64_C(1) << 18, + /* When putting together a transaction, propagate JOB_RESTART from our unit to the other. */ + UNIT_ATOM_PROPAGATE_RESTART = UINT64_C(1) << 19, + + /* Add the other unit to the default target dependency queue */ + UNIT_ATOM_ADD_DEFAULT_TARGET_DEPENDENCY_QUEUE = UINT64_C(1) << 20, + /* Recheck default target deps on other units (which are target units) */ + UNIT_ATOM_DEFAULT_TARGET_DEPENDENCIES = UINT64_C(1) << 21, + + /* The remaining atoms map 1:1 to the equally named high-level deps */ + UNIT_ATOM_ON_FAILURE = UINT64_C(1) << 22, + UNIT_ATOM_ON_SUCCESS = UINT64_C(1) << 23, + UNIT_ATOM_ON_FAILURE_OF = UINT64_C(1) << 24, + UNIT_ATOM_ON_SUCCESS_OF = UINT64_C(1) << 25, + UNIT_ATOM_BEFORE = UINT64_C(1) << 26, + UNIT_ATOM_AFTER = UINT64_C(1) << 27, + UNIT_ATOM_TRIGGERS = UINT64_C(1) << 28, + UNIT_ATOM_TRIGGERED_BY = UINT64_C(1) << 29, + UNIT_ATOM_PROPAGATES_RELOAD_TO = UINT64_C(1) << 30, + UNIT_ATOM_JOINS_NAMESPACE_OF = UINT64_C(1) << 31, + UNIT_ATOM_REFERENCES = UINT64_C(1) << 32, + UNIT_ATOM_REFERENCED_BY = UINT64_C(1) << 33, + UNIT_ATOM_IN_SLICE = UINT64_C(1) << 34, + UNIT_ATOM_SLICE_OF = UINT64_C(1) << 35, + _UNIT_DEPENDENCY_ATOM_MAX = (UINT64_C(1) << 36) - 1, + _UNIT_DEPENDENCY_ATOM_INVALID = -EINVAL, +} UnitDependencyAtom; + +UnitDependencyAtom unit_dependency_to_atom(UnitDependency d); +UnitDependency unit_dependency_from_unique_atom(UnitDependencyAtom atom); |