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-rw-r--r--src/grp-system/libcore/path.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/grp-system/libcore/path.h b/src/grp-system/libcore/path.h
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+++ b/src/grp-system/libcore/path.h
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+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+typedef struct Path Path;
+typedef struct PathSpec PathSpec;
+
+#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 = -1
+} 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_RESULT_MAX,
+ _PATH_RESULT_INVALID = -1
+} PathResult;
+
+struct Path {
+ Unit meta;
+
+ LIST_HEAD(PathSpec, specs);
+
+ PathState state, deserialized_state;
+
+ bool inotify_triggered;
+
+ bool make_directory;
+ mode_t directory_mode;
+
+ PathResult result;
+};
+
+void path_free_specs(Path *p);
+
+extern const UnitVTable 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_;