fsnotify: include data in should_send calls

fanotify is going to need to look at file->private_data to know if an event
should be sent or not.  This passes the data (which might be a file,
dentry, inode, or none) to the should_send function calls so fanotify can
get that information when available

Signed-off-by: Eric Paris <eparis@redhat.com>

6 files changed, 7 insertions, 6 deletions

diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index 6f30f496e235..a213b83a59cf 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -134,7 +134,7 @@ static int dnotify_handle_event(struct fsnotify_group *group,
  */
 static bool dnotify_should_send_event(struct fsnotify_group *group,
                                       struct inode *inode, __u32 mask,
-                                      int data_type)
+                                      void *data, int data_type)
 {
         struct fsnotify_mark_entry *entry;
         bool send;
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index fc06e4789392..523337b600a0 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -157,7 +157,8 @@ void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, const
         idx = srcu_read_lock(&fsnotify_grp_srcu);
         list_for_each_entry_rcu(group, &fsnotify_groups, group_list) {
                 if (test_mask & group->mask) {
-                        if (!group->ops->should_send_event(group, to_tell, mask, data_is))
+                        if (!group->ops->should_send_event(group, to_tell, mask,
+                                                           data, data_is))
                                 continue;
                         if (!event) {
                                 event = fsnotify_create_event(to_tell, mask, data,
diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c
index fc7c4952e6a2..1f33234cc308 100644
--- a/fs/notify/inotify/inotify_fsnotify.c
+++ b/fs/notify/inotify/inotify_fsnotify.c
@@ -87,7 +87,7 @@ static void inotify_freeing_mark(struct fsnotify_mark_entry *entry, struct fsnot
 }
 
 static bool inotify_should_send_event(struct fsnotify_group *group, struct inode *inode,
-                                      __u32 mask, int data_type)
+                                      __u32 mask, void *data, int data_type)
 {
         struct fsnotify_mark_entry *entry;
         bool send;
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 61aed0c54fe9..2766df67f1ec 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -85,7 +85,7 @@ struct fsnotify_event_private_data;
  */
 struct fsnotify_ops {
         bool (*should_send_event)(struct fsnotify_group *group, struct inode *inode,
-                                  __u32 mask, int data_type);
+                                  __u32 mask, void *data, int data_type);
         int (*handle_event)(struct fsnotify_group *group, struct fsnotify_event *event);
         void (*free_group_priv)(struct fsnotify_group *group);
         void (*freeing_mark)(struct fsnotify_mark_entry *entry, struct fsnotify_group *group);
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index b5417cd65216..e3d63b596ef0 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -920,7 +920,7 @@ static void audit_tree_freeing_mark(struct fsnotify_mark_entry *entry, struct fs
 }
 
 static bool audit_tree_send_event(struct fsnotify_group *group, struct inode *inode,
-                                  __u32 mask, int data_type)
+                                  __u32 mask, void *data, int data_type)
 {
         return 0;
 }
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index 67d8f2f52874..85c43aa292e0 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -506,7 +506,7 @@ void audit_remove_watch_rule(struct audit_krule *krule)
 }
 
 static bool audit_watch_should_send_event(struct fsnotify_group *group, struct inode *inode,
-                                          __u32 mask, int data_type)
+                                          __u32 mask, void *data, int data_type)
 {
         struct fsnotify_mark_entry *entry;
         bool send;