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-rw-r--r--src/core/path.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/src/core/path.h b/src/core/path.h
new file mode 100644
index 0000000..cb5b662
--- /dev/null
+++ b/src/core/path.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+typedef struct Path Path;
+typedef struct PathSpec PathSpec;
+typedef struct ActivationDetailsPath ActivationDetailsPath;
+
+#include "unit.h"
+
+typedef enum PathType {
+ PATH_EXISTS,
+ PATH_EXISTS_GLOB,
+ PATH_DIRECTORY_NOT_EMPTY,
+ PATH_CHANGED,
+ PATH_MODIFIED,
+ _PATH_TYPE_MAX,
+ _PATH_TYPE_INVALID = -EINVAL,
+} PathType;
+
+typedef struct PathSpec {
+ Unit *unit;
+
+ char *path;
+
+ sd_event_source *event_source;
+
+ LIST_FIELDS(struct PathSpec, spec);
+
+ PathType type;
+ int inotify_fd;
+ int primary_wd;
+
+ bool previous_exists;
+} PathSpec;
+
+int path_spec_watch(PathSpec *s, sd_event_io_handler_t handler);
+void path_spec_unwatch(PathSpec *s);
+int path_spec_fd_event(PathSpec *s, uint32_t events);
+void path_spec_done(PathSpec *s);
+
+static inline bool path_spec_owns_inotify_fd(PathSpec *s, int fd) {
+ return s->inotify_fd == fd;
+}
+
+typedef enum PathResult {
+ PATH_SUCCESS,
+ PATH_FAILURE_RESOURCES,
+ PATH_FAILURE_START_LIMIT_HIT,
+ PATH_FAILURE_UNIT_START_LIMIT_HIT,
+ PATH_FAILURE_TRIGGER_LIMIT_HIT,
+ _PATH_RESULT_MAX,
+ _PATH_RESULT_INVALID = -EINVAL,
+} PathResult;
+
+struct Path {
+ Unit meta;
+
+ LIST_HEAD(PathSpec, specs);
+
+ PathState state, deserialized_state;
+
+ bool make_directory;
+ mode_t directory_mode;
+
+ PathResult result;
+
+ RateLimit trigger_limit;
+
+ sd_event_source *trigger_notify_event_source;
+};
+
+struct ActivationDetailsPath {
+ ActivationDetails meta;
+ char *trigger_path_filename;
+};
+
+void path_free_specs(Path *p);
+
+extern const UnitVTable path_vtable;
+extern const ActivationDetailsVTable activation_details_path_vtable;
+
+const char* path_type_to_string(PathType i) _const_;
+PathType path_type_from_string(const char *s) _pure_;
+
+const char* path_result_to_string(PathResult i) _const_;
+PathResult path_result_from_string(const char *s) _pure_;
+
+DEFINE_CAST(PATH, Path);
+DEFINE_ACTIVATION_DETAILS_CAST(ACTIVATION_DETAILS_PATH, ActivationDetailsPath, PATH);