Add notify_onelevel.tdb

This optimizes non-recursive notifys. For non-recursive notifies we can use a
per-directory file-id indexed notify record. This matters for the Windows
Explorer and IIS cases which do not use recursive notifies. In these cases, we
do not have to shuffle around the whole notify record on every change.

For the cluster case, this improves correctness of the notifies, ctdb only
distributes the tdb seqnum once a second, so we can lose notifies.

1 files changed, 10 insertions, 0 deletions

diff --git a/source3/smbd/notify.c b/source3/smbd/notify.c
index d141fb2180..12a75cc9f6 100644
--- a/source3/smbd/notify.c
+++ b/source3/smbd/notify.c
@@ -339,6 +339,9 @@ void notify_fname(connection_struct *conn, uint32 action, uint32 filter,
 		  const char *path)
 {
 	char *fullpath;
+	char *parent;
+	const char *name;
+	SMB_STRUCT_STAT sbuf;
 
 	if (path[0] == '.' && path[1] == '/') {
 		path += 2;
@@ -348,6 +351,13 @@ void notify_fname(connection_struct *conn, uint32 action, uint32 filter,
 		return;
 	}
 
+	if (parent_dirname(talloc_tos(), path, &parent, &name)
+	    && (SMB_VFS_STAT(conn, parent, &sbuf) != -1)) {
+		notify_onelevel(conn->notify_ctx, action, filter,
+				SMB_VFS_FILE_ID_CREATE(conn, &sbuf),
+				name);
+	}
+
 	notify_trigger(conn->notify_ctx, action, filter, fullpath);
 	SAFE_FREE(fullpath);
 }