diff --git a/src/booth.h b/src/booth.h
index 59bd698..ff19afe 100644
--- a/src/booth.h
+++ b/src/booth.h
@@ -1,82 +1,83 @@
 /* 
  * Copyright (C) 2011 Jiaju Zhang <jjzhang@suse.de>
  * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  * 
  * This software is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  * 
  * You should have received a copy of the GNU General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _BOOTH_H
 #define _BOOTH_H
 
 #include <stdint.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 
 #define BOOTH_LOG_DUMP_SIZE (1024*1024)
 
 #define BOOTH_RUN_DIR "/var/run"
 #define BOOTH_LOG_DIR "/var/log"
 #define BOOTH_LOGFILE_NAME "booth.log"
 #define BOOTH_DEFAULT_LOCKFILE BOOTH_RUN_DIR "/booth.pid"
 #define BOOTH_DEFAULT_CONF "/etc/sysconfig/booth"
 
 #define DAEMON_NAME		"booth"
 #define BOOTH_NAME_LEN		63
 #define BOOTH_PATH_LEN		127
 
 #define BOOTHC_SOCK_PATH		"boothc_lock"
 #define BOOTH_PROTO_FAMILY	AF_INET
 #define BOOTH_CMD_PORT		22075
 
 #define BOOTHC_MAGIC		0x5F1BA08C
 #define BOOTHC_VERSION		0x00010000
 
 #define BOOTHC_OPT_FORCE		0x00000001
 
 struct boothc_header {
 	uint32_t magic;
 	uint32_t version;
 	uint32_t cmd;
 	uint32_t option;
 	uint32_t expiry;
 	uint32_t len;
 	uint32_t result;
 };
 
 typedef enum {
 	BOOTHC_CMD_LIST = 1,
 	BOOTHC_CMD_GRANT,
 	BOOTHC_CMD_REVOKE,
 } cmd_request_t;
 
 typedef enum {
 	BOOTHC_RLT_ASYNC = 1,
 	BOOTHC_RLT_SYNC_SUCC,
 	BOOTHC_RLT_SYNC_FAIL,
 	BOOTHC_RLT_INVALID_ARG,
 	BOOTHC_RLT_REMOTE_OP,
 } cmd_result_t;
 
 struct client {
         int fd;
         void *workfn;
         void *deadfn;
 };
 
 int client_add(int fd, void (*workfn)(int ci), void (*deadfn)(int ci));
 int do_read(int fd, void *buf, size_t count);
 int do_write(int fd, void *buf, size_t count);
 void process_connection(int ci);
+void safe_copy(char *dest, char *value, size_t buflen, const char *description);
 
 #endif /* _BOOTH_H */