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3ecaa09bcc
Instead of having explicit type-specific callbacks that inform the triggering unit when a triggered unit changes state, make this generic so that state changes are forwarded betwee any triggered and triggering unit. Also, get rid of UnitRef references from automount, timer, path units, to the units they trigger and rely exclsuively on UNIT_TRIGGER type dendencies.
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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typedef struct Path Path;
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#include "unit.h"
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#include "mount.h"
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typedef enum PathState {
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PATH_DEAD,
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PATH_WAITING,
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PATH_RUNNING,
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PATH_FAILED,
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_PATH_STATE_MAX,
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_PATH_STATE_INVALID = -1
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} PathState;
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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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char *path;
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Watch watch;
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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, Unit *u);
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void path_spec_unwatch(PathSpec *s, Unit *u);
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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_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 inotify_triggered;
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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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/* Called from the mount code figure out if a mount is a dependency of
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* any of the paths of this path object */
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int path_add_one_mount_link(Path *p, Mount *m);
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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_state_to_string(PathState i);
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PathState path_state_from_string(const char *s);
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const char* path_type_to_string(PathType i);
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PathType path_type_from_string(const char *s);
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const char* path_result_to_string(PathResult i);
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PathResult path_result_from_string(const char *s);
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