*/
struct fsnotify_ops {
bool (*should_send_event)(struct fsnotify_group *group, struct inode *inode,
- struct vfsmount *mnt, __u32 mask, void *data,
- int data_type);
- int (*handle_event)(struct fsnotify_group *group, struct fsnotify_event *event);
+ struct fsnotify_mark *inode_mark,
+ struct fsnotify_mark *vfsmount_mark,
+ __u32 mask, void *data, int data_type);
+ int (*handle_event)(struct fsnotify_group *group,
+ struct fsnotify_mark *inode_mark,
+ struct fsnotify_mark *vfsmount_mark,
+ struct fsnotify_event *event);
void (*free_group_priv)(struct fsnotify_group *group);
void (*freeing_mark)(struct fsnotify_mark *mark, struct fsnotify_group *group);
void (*free_event_priv)(struct fsnotify_event_private_data *priv);
* everything will be cleaned up.
*/
struct fsnotify_group {
- /*
- * global list of all groups receiving events from fsnotify.
- * anchored by fsnotify_inode_groups and protected by either fsnotify_grp_mutex
- * or fsnotify_grp_srcu depending on write vs read.
- */
- struct list_head inode_group_list;
- /*
- * same as above except anchored by fsnotify_vfsmount_groups
- */
- struct list_head vfsmount_group_list;
-
- /*
- * Defines all of the event types in which this group is interested.
- * This mask is a bitwise OR of the FS_* events from above. Each time
- * this mask changes for a group (if it changes) the correct functions
- * must be called to update the global structures which indicate global
- * interest in event types.
- */
- __u32 mask;
-
/*
* How the refcnt is used is up to each group. When the refcnt hits 0
* fsnotify will clean up all of the resources associated with this group.
* a group */
struct list_head marks_list; /* all inode marks for this group */
- /* prevents double list_del of group_list. protected by global fsnotify_grp_mutex */
- bool on_inode_group_list;
- bool on_vfsmount_group_list;
-
/* groups can define private fields here or use the void *private */
union {
void *private;
struct mutex access_mutex;
struct list_head access_list;
wait_queue_head_t access_waitq;
+ bool bypass_perm; /* protected by access_mutex */
#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */
int f_flags;
} fanotify_data;
#define FSNOTIFY_MARK_FLAG_VFSMOUNT 0x02
#define FSNOTIFY_MARK_FLAG_OBJECT_PINNED 0x04
#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x08
+#define FSNOTIFY_MARK_FLAG_ALIVE 0x10
unsigned int flags; /* vfsmount or inode mark? */
+ struct list_head destroy_list;
void (*free_mark)(struct fsnotify_mark *mark); /* called on final put+free */
};
/* called from fsnotify listeners, such as fanotify or dnotify */
-/* must call when a group changes its ->mask */
-extern void fsnotify_recalc_global_mask(void);
/* get a reference to an existing or create a new group */
extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops);
-/* run all marks associated with this group and update group->mask */
-extern void fsnotify_recalc_group_mask(struct fsnotify_group *group);
/* drop reference on a group from fsnotify_alloc_group */
extern void fsnotify_put_group(struct fsnotify_group *group);
struct fsnotify_event *event);
/* attach the event to the group notification queue */
-extern int fsnotify_add_notify_event(struct fsnotify_group *group,
- struct fsnotify_event *event,
- struct fsnotify_event_private_data *priv,
- int (*merge)(struct list_head *,
- struct fsnotify_event *,
- void **),
- void **arg);
+extern struct fsnotify_event *fsnotify_add_notify_event(struct fsnotify_group *group,
+ struct fsnotify_event *event,
+ struct fsnotify_event_private_data *priv,
+ struct fsnotify_event *(*merge)(struct list_head *,
+ struct fsnotify_event *));
/* true if the group notification queue is empty */
extern bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group);
/* return, but do not dequeue the first event on the notification queue */