msg.h

   1 /*
   2  * Copyright (C) 2008 Intel Corporation
   3  *
   4  *      mdmon socket / message handling
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20
  21 struct mdinfo;
  22 struct metadata_update;
  23
  24 extern int receive_message(int fd, struct metadata_update *msg, int tmo);
  25 extern int send_message(int fd, struct metadata_update *msg, int tmo);
  26 extern int ack(int fd, int tmo);
  27 extern int wait_reply(int fd, int tmo);
  28 extern int connect_monitor(char *devname);
  29 extern int ping_monitor(char *devname);
  30 extern int block_monitor(char *container, const int freeze);
  31 extern void unblock_monitor(char *container, const int unfreeze);
  32 extern int fping_monitor(int sock);
  33 extern int ping_manager(char *devname);
  34
  35 #define MSG_MAX_LEN (4*1024*1024)