#include <linux/path.h> /* struct path */
#include <linux/spinlock.h>
#include <linux/types.h>
-
#include <linux/atomic.h>
/*
struct fsnotify_event;
struct fsnotify_mark;
struct fsnotify_event_private_data;
+struct fsnotify_fname;
/*
* Each group much define these ops. The fsnotify infrastructure will call
struct fsnotify_mark *vfsmount_mark,
__u32 mask, void *data, int data_type);
int (*handle_event)(struct fsnotify_group *group,
+ struct inode *inode,
struct fsnotify_mark *inode_mark,
struct fsnotify_mark *vfsmount_mark,
- struct fsnotify_event *event);
+ u32 mask, void *data, int data_type,
+ const unsigned char *file_name);
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);
+ void (*free_event)(struct fsnotify_event *event);
+};
+
+/*
+ * all of the information about the original object we want to now send to
+ * a group. If you want to carry more info from the accessing task to the
+ * listener this structure is where you need to be adding fields.
+ */
+struct fsnotify_event {
+ struct list_head list;
+ /* inode may ONLY be dereferenced during handle_event(). */
+ struct inode *inode; /* either the inode the event happened to or its parent */
+ u32 mask; /* the type of access, bitwise OR for FS_* event types */
};
/*
* a group */
struct list_head marks_list; /* all inode marks for this group */
- struct fasync_struct *fsn_fa; /* async notification */
+ struct fasync_struct *fsn_fa; /* async notification */
+
+ struct fsnotify_event overflow_event; /* Event we queue when the
+ * notification list is too
+ * full */
/* groups can define private fields here or use the void *private */
union {
};
};
-/*
- * A single event can be queued in multiple group->notification_lists.
- *
- * each group->notification_list will point to an event_holder which in turns points
- * to the actual event that needs to be sent to userspace.
- *
- * Seemed cheaper to create a refcnt'd event and a small holder for every group
- * than create a different event for every group
- *
- */
-struct fsnotify_event_holder {
- struct fsnotify_event *event;
- struct list_head event_list;
-};
-
-/*
- * Inotify needs to tack data onto an event. This struct lets us later find the
- * correct private data of the correct group.
- */
-struct fsnotify_event_private_data {
- struct fsnotify_group *group;
- struct list_head event_list;
-};
-
-/*
- * all of the information about the original object we want to now send to
- * a group. If you want to carry more info from the accessing task to the
- * listener this structure is where you need to be adding fields.
- */
-struct fsnotify_event {
- /*
- * If we create an event we are also likely going to need a holder
- * to link to a group. So embed one holder in the event. Means only
- * one allocation for the common case where we only have one group
- */
- struct fsnotify_event_holder holder;
- spinlock_t lock; /* protection for the associated event_holder and private_list */
- /* to_tell may ONLY be dereferenced during handle_event(). */
- struct inode *to_tell; /* either the inode the event happened to or its parent */
- /*
- * depending on the event type we should have either a path or inode
- * We hold a reference on path, but NOT on inode. Since we have the ref on
- * the path, it may be dereferenced at any point during this object's
- * lifetime. That reference is dropped when this object's refcnt hits
- * 0. If this event contains an inode instead of a path, the inode may
- * ONLY be used during handle_event().
- */
- union {
- struct path path;
- struct inode *inode;
- };
/* when calling fsnotify tell it if the data is a path or inode */
#define FSNOTIFY_EVENT_NONE 0
#define FSNOTIFY_EVENT_PATH 1
#define FSNOTIFY_EVENT_INODE 2
- int data_type; /* which of the above union we have */
- atomic_t refcnt; /* how many groups still are using/need to send this event */
- __u32 mask; /* the type of access, bitwise OR for FS_* event types */
-
- u32 sync_cookie; /* used to corrolate events, namely inotify mv events */
- const unsigned char *file_name;
- size_t name_len;
- struct pid *tgid;
-
-#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
- __u32 response; /* userspace answer to question */
-#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */
-
- struct list_head private_data_list; /* groups can store private data here */
-};
/*
* Inode specific fields in an fsnotify_mark
extern void fsnotify_destroy_group(struct fsnotify_group *group);
/* fasync handler function */
extern int fsnotify_fasync(int fd, struct file *file, int on);
-/* take a reference to an event */
-extern void fsnotify_get_event(struct fsnotify_event *event);
-extern void fsnotify_put_event(struct fsnotify_event *event);
-/* find private data previously attached to an event and unlink it */
-extern struct fsnotify_event_private_data *fsnotify_remove_priv_from_event(struct fsnotify_group *group,
- struct fsnotify_event *event);
-
+/* Free event from memory */
+extern void fsnotify_destroy_event(struct fsnotify_group *group,
+ struct fsnotify_event *event);
/* attach the event to the group notification queue */
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 void fsnotify_unmount_inodes(struct list_head *list);
/* put here because inotify does some weird stuff when destroying watches */
-extern struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask,
- void *data, int data_is,
- const unsigned char *name,
- u32 cookie, gfp_t gfp);
-
-/* fanotify likes to change events after they are on lists... */
-extern struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event);
-extern int fsnotify_replace_event(struct fsnotify_event_holder *old_holder,
- struct fsnotify_event *new_event);
+extern void fsnotify_init_event(struct fsnotify_event *event,
+ struct inode *to_tell, u32 mask);
#else
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