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Diffstat (limited to 'fs/notify/fanotify/fanotify.h')
-rw-r--r--fs/notify/fanotify/fanotify.h34
1 files changed, 27 insertions, 7 deletions
diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h
index 32a2f034fb94..2a5fb14115df 100644
--- a/fs/notify/fanotify/fanotify.h
+++ b/fs/notify/fanotify/fanotify.h
@@ -3,13 +3,12 @@
#include <linux/slab.h>
extern struct kmem_cache *fanotify_event_cachep;
+extern struct kmem_cache *fanotify_perm_event_cachep;
/*
- * Lifetime of the structure differs for normal and permission events. In both
- * cases the structure is allocated in fanotify_handle_event(). For normal
- * events the structure is freed immediately after reporting it to userspace.
- * For permission events we free it only after we receive response from
- * userspace.
+ * Structure for normal fanotify events. It gets allocated in
+ * fanotify_handle_event() and freed when the information is retrieved by
+ * userspace
*/
struct fanotify_event_info {
struct fsnotify_event fse;
@@ -19,12 +18,33 @@ struct fanotify_event_info {
*/
struct path path;
struct pid *tgid;
+};
+
#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
- u32 response; /* userspace answer to question */
-#endif
+/*
+ * Structure for permission fanotify events. It gets allocated and freed in
+ * fanotify_handle_event() since we wait there for user response. When the
+ * information is retrieved by userspace the structure is moved from
+ * group->notification_list to group->fanotify_data.access_list to wait for
+ * user response.
+ */
+struct fanotify_perm_event_info {
+ struct fanotify_event_info fae;
+ int response; /* userspace answer to question */
+ int fd; /* fd we passed to userspace for this event */
};
+static inline struct fanotify_perm_event_info *
+FANOTIFY_PE(struct fsnotify_event *fse)
+{
+ return container_of(fse, struct fanotify_perm_event_info, fae.fse);
+}
+#endif
+
static inline struct fanotify_event_info *FANOTIFY_E(struct fsnotify_event *fse)
{
return container_of(fse, struct fanotify_event_info, fse);
}
+
+struct fanotify_event_info *fanotify_alloc_event(struct inode *inode, u32 mask,
+ struct path *path);