47ab8f73e3
We already do this for socket and automount units, do it for path units too: if the triggered service keeps hitting the start limit, then fail the triggering unit too, so that we don#t busy loop forever. (Note that this leaves only timer units out in the cold for this kind of protection, but it shouldn't matter there, as they are naturally protected against busy loops: they are scheduled by time anyway). Fixes: #16669
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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typedef struct Path Path;
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typedef struct PathSpec PathSpec;
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#include "unit.h"
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typedef enum PathType {
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PATH_EXISTS,
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PATH_EXISTS_GLOB,
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PATH_DIRECTORY_NOT_EMPTY,
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PATH_CHANGED,
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PATH_MODIFIED,
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_PATH_TYPE_MAX,
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_PATH_TYPE_INVALID = -1
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} PathType;
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typedef struct PathSpec {
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Unit *unit;
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char *path;
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sd_event_source *event_source;
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LIST_FIELDS(struct PathSpec, spec);
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PathType type;
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int inotify_fd;
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int primary_wd;
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bool previous_exists;
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} PathSpec;
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int path_spec_watch(PathSpec *s, sd_event_io_handler_t handler);
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void path_spec_unwatch(PathSpec *s);
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int path_spec_fd_event(PathSpec *s, uint32_t events);
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void path_spec_done(PathSpec *s);
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static inline bool path_spec_owns_inotify_fd(PathSpec *s, int fd) {
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return s->inotify_fd == fd;
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}
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typedef enum PathResult {
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PATH_SUCCESS,
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PATH_FAILURE_RESOURCES,
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PATH_FAILURE_START_LIMIT_HIT,
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PATH_FAILURE_UNIT_START_LIMIT_HIT,
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_PATH_RESULT_MAX,
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_PATH_RESULT_INVALID = -1
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} PathResult;
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struct Path {
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Unit meta;
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LIST_HEAD(PathSpec, specs);
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PathState state, deserialized_state;
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bool make_directory;
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mode_t directory_mode;
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PathResult result;
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};
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void path_free_specs(Path *p);
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extern const UnitVTable path_vtable;
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const char* path_type_to_string(PathType i) _const_;
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PathType path_type_from_string(const char *s) _pure_;
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const char* path_result_to_string(PathResult i) _const_;
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PathResult path_result_from_string(const char *s) _pure_;
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DEFINE_CAST(PATH, Path);
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