include/linux/fsnotify_backend.h

1 /* SPDX-License-Identifier: GPL-2.0 */
41 #define FS_OPEN_EXEC		0x00001000	/* File was opened for exec */
49 #define FS_OPEN_EXEC_PERM	0x00040000	/* open/exec event in a permission hook */
67  * Directory entry modification events - reported only to directory
119  * handle_event - main call for a group to handle an fs event
124  * @dir:	optional directory associated with event -
131  * handle_inode_event - simple variant of handle_event() for groups that only
136  * @dir:	optional directory associated with event -
141  * free_group_priv - called when a group refcnt hits 0 to clean up the private union
142  * freeing_mark - called when a mark is being destroyed for some reason.  The group
192 	spinlock_t notification_lock;		/* protect the notification_list */
203 	#define FS_PRIO_2	2 /* fanotify pre-content access */
208 	struct mutex mark_mutex;	/* protect marks_list */
261 		return d_inode(((const struct path *)data)->dentry);  in fsnotify_data_inode()
291 #define FSNOTIFY_OBJ_ALL_TYPES_MASK	((1U << FSNOTIFY_OBJ_TYPE_COUNT) - 1)
307 	return (iter_info->report_mask & (1U << type));  in fsnotify_iter_should_report_type()
313 	iter_info->report_mask |= (1U << type);  in fsnotify_iter_set_report_type()
320 	iter_info->marks[type] = mark;  in fsnotify_iter_set_report_type_mark()
321 	iter_info->report_mask |= (1U << type);  in fsnotify_iter_set_report_type_mark()
328 	return (iter_info->report_mask & FSNOTIFY_OBJ_TYPE_##NAME##_FL) ? \
329 		iter_info->marks[FSNOTIFY_OBJ_TYPE_##NAME] : NULL; \
379  * particular entry. obj_lock means either inode->i_lock or
380  * mnt->mnt_root->d_lock depending on the mark type.
383 	/* Mask this mark is for [mark->lock, group->mark_mutex] */
391 	/* List of marks by group->marks_list. Also reused for queueing
393 	 * before it can be freed. [group->mark_mutex] */
397 	/* List of marks for inode / vfsmount [connector->lock, mark ref] */
401 	/* Events types to ignore [mark->lock, group->mark_mutex] */
406 	unsigned int flags;		/* flags [mark->lock] */
440 	if (!(inode->i_fsnotify_mask & FS_EVENT_ON_CHILD))  in fsnotify_inode_watches_children()
444 	return inode->i_fsnotify_mask & FS_EVENTS_POSS_ON_CHILD;  in fsnotify_inode_watches_children()
449  * filesystem events when those events happens to this dentry->d_inode.
453 	assert_spin_locked(&dentry->d_lock);  in fsnotify_update_flags()
462 	if (fsnotify_inode_watches_children(dentry->d_parent->d_inode))  in fsnotify_update_flags()
463 		dentry->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED;  in fsnotify_update_flags()
465 		dentry->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED;  in fsnotify_update_flags()
493 	fsnotify_add_event(group, group->overflow_event, NULL);  in fsnotify_queue_overflow()
534 	return fsnotify_add_mark(mark, &inode->i_fsnotify_marks,  in fsnotify_add_inode_mark()
541 	return fsnotify_add_mark_locked(mark, &inode->i_fsnotify_marks,  in fsnotify_add_inode_mark_locked()
580 	INIT_LIST_HEAD(&event->list);  in fsnotify_init_event()
581 	event->objectid = objectid;  in fsnotify_init_event()