/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License v.2.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Definitions for CLVMD server and clients */
/*
* The protocol spoken over the cluster and across the local socket.
*/
#ifndef _CLVM_H
#define _CLVM_H
struct clvm_header {
uint8_t cmd; /* See below */
uint8_t flags; /* See below */
uint16_t xid; /* Transaction ID */
uint32_t clientid; /* Only used in Daemon->Daemon comms */
int32_t status; /* For replies, whether request succeeded */
uint32_t arglen; /* Length of argument below.
If >1500 then it will be passed
around the cluster in the system LV */
char node[1]; /* Actually a NUL-terminated string, node name.
If this is empty then the command is
forwarded to all cluster nodes unless
FLAG_LOCAL is also set. */
char args[1]; /* Arguments for the command follow the
node name, This member is only
valid if the node name is empty */
} __attribute__ ((packed));
/* Flags */
#define CLVMD_FLAG_LOCAL 1 /* Only do this on the local node */
#define CLVMD_FLAG_SYSTEMLV 2 /* Data in system LV under my node name */
#define CLVMD_FLAG_NODEERRS 4 /* Reply has errors in node-specific portion */
/* Name of the local socket to communicate between libclvm and clvmd */
//static const char CLVMD_SOCKNAME[]="/var/run/clvmd";
static const char CLVMD_SOCKNAME[] = "\0clvmd";
/* Internal commands & replies */
#define CLVMD_CMD_REPLY 1
#define CLVMD_CMD_VERSION 2 /* Send version around cluster when we start */
#define CLVMD_CMD_GOAWAY 3 /* Die if received this - we are running
an incompatible version */
#define CLVMD_CMD_TEST 4 /* Just for mucking about */
