Optimization for change_file_owner_to_parent() and change_dir_owner_to_parent()

Don't do the chown if the owner is already correct.
(cherry picked from commit 9c2ba9436d1abe66c493a512702101f631946cdf)
(cherry picked from commit 232e35b48cce6619e409ed07cd367cedd34624c3)

1 files changed, 21 insertions, 0 deletions

diff --git a/source3/smbd/open.c b/source3/smbd/open.c
index 5c449fcb86a..db326c5a6da 100644
--- a/source3/smbd/open.c
+++ b/source3/smbd/open.c
@@ -214,6 +214,17 @@ void change_file_owner_to_parent(connection_struct *conn,
 			 "directory %s. Error was %s\n",
 			 smb_fname_str_dbg(smb_fname_parent),
 			 strerror(errno)));
+		TALLOC_FREE(smb_fname_parent);
+		return;
+	}
+
+	if (smb_fname_parent->st.st_ex_uid == fsp->fsp_name->st.st_ex_uid) {
+		/* Already this uid - no need to change. */
+		DEBUG(10,("change_file_owner_to_parent: file %s "
+			"is already owned by uid %d\n",
+			fsp_str_dbg(fsp),
+			(int)fsp->fsp_name->st.st_ex_uid ));
+		TALLOC_FREE(smb_fname_parent);
 		return;
 	}
 
@@ -314,6 +325,16 @@ NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
 		goto chdir;
 	}
 
+	if (smb_fname_parent->st.st_ex_uid == smb_fname_cwd->st.st_ex_uid) {
+		/* Already this uid - no need to change. */
+		DEBUG(10,("change_dir_owner_to_parent: directory %s "
+			"is already owned by uid %d\n",
+			fname,
+			(int)smb_fname_cwd->st.st_ex_uid ));
+		status = NT_STATUS_OK;
+		goto chdir;
+	}
+
 	become_root();
 	ret = SMB_VFS_CHOWN(conn, ".", smb_fname_parent->st.st_ex_uid,
 			    (gid_t)-1);