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lvm2/daemons/clvmd/cnxman-socket.h
Patrick Caulfield 8ef0b7b9ef Keep client locks (VG locks usually) in their own hash table so
we can actually have more then one of them per client.
2004-09-24 09:39:57 +00:00

227 lines
7.8 KiB
C

/******************************************************************************
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004 Red Hat, Inc. All rights reserved.
**
** 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.
**
*******************************************************************************
******************************************************************************/
/* CMAN socket interface header,
may be include by user or kernel code */
#ifndef __CNXMAN_SOCKET_H
#define __CNXMAN_SOCKET_H
/* A currently unused number. TIPC also uses this number and you're unlikely
to be using both.
*/
#define AF_CLUSTER 30
#define PF_CLUSTER AF_CLUSTER
/* Protocol(socket) types */
#define CLPROTO_MASTER 2
#define CLPROTO_CLIENT 3
/* ioctls -- should register these properly */
#define SIOCCLUSTER_NOTIFY _IOW('x', 0x01, int)
#define SIOCCLUSTER_REMOVENOTIFY _IO( 'x', 0x02)
#define SIOCCLUSTER_GETMEMBERS _IOR('x', 0x03, struct cl_cluster_nodelist)
#define SIOCCLUSTER_SETEXPECTED_VOTES _IOW('x', 0x04, int)
#define SIOCCLUSTER_ISQUORATE _IO( 'x', 0x05)
#define SIOCCLUSTER_ISLISTENING _IOW('x', 0x06, struct cl_listen_request)
#define SIOCCLUSTER_GETALLMEMBERS _IOR('x', 0x07, struct cl_cluster_nodelist)
#define SIOCCLUSTER_SET_VOTES _IOW('x', 0x08, int)
#define SIOCCLUSTER_GET_VERSION _IOR('x', 0x09, struct cl_version)
#define SIOCCLUSTER_SET_VERSION _IOW('x', 0x0a, struct cl_version)
#define SIOCCLUSTER_ISACTIVE _IO( 'x', 0x0b)
#define SIOCCLUSTER_KILLNODE _IOW('x', 0x0c, int)
#define SIOCCLUSTER_GET_JOINCOUNT _IO( 'x', 0x0d)
#define SIOCCLUSTER_SERVICE_REGISTER _IOW('x', 0x0e, char)
#define SIOCCLUSTER_SERVICE_UNREGISTER _IO('x', 0x0f)
#define SIOCCLUSTER_SERVICE_JOIN _IO( 'x', 0x10)
#define SIOCCLUSTER_SERVICE_LEAVE _IO( 'x', 0x20)
#define SIOCCLUSTER_SERVICE_SETSIGNAL _IOW('x', 0x30, int)
#define SIOCCLUSTER_SERVICE_STARTDONE _IOW('x', 0x40, unsigned int)
#define SIOCCLUSTER_SERVICE_GETEVENT _IOR('x', 0x50, struct cl_service_event)
#define SIOCCLUSTER_SERVICE_GETMEMBERS _IOR('x', 0x60, struct cl_cluster_nodelist)
#define SIOCCLUSTER_SERVICE_GLOBALID _IOR('x', 0x70, uint32_t)
#define SIOCCLUSTER_SERVICE_SETLEVEL _IOR('x', 0x80, int)
#define SIOCCLUSTER_GETNODE _IOWR('x', 0x90, struct cl_cluster_node)
#define SIOCCLUSTER_BARRIER _IOW('x', 0x0a0, struct cl_barrier_info)
/* These were setsockopts */
#define SIOCCLUSTER_PASS_SOCKET _IOW('x', 0x0b0, struct cl_passed_sock)
#define SIOCCLUSTER_SET_NODENAME _IOW('x', 0x0b1, char *)
#define SIOCCLUSTER_SET_NODEID _IOW('x', 0x0b2, int)
#define SIOCCLUSTER_JOIN_CLUSTER _IOW('x', 0x0b3, struct cl_join_cluster_info)
#define SIOCCLUSTER_LEAVE_CLUSTER _IOW('x', 0x0b4, int)
/* Maximum size of a cluster message */
#define MAX_CLUSTER_MESSAGE 1500
#define MAX_CLUSTER_MEMBER_NAME_LEN 255
#define MAX_BARRIER_NAME_LEN 33
#define MAX_SA_ADDR_LEN 12
#define MAX_CLUSTER_NAME_LEN 16
/* Well-known cluster port numbers */
#define CLUSTER_PORT_MEMBERSHIP 1 /* Mustn't block during cluster
* transitions! */
#define CLUSTER_PORT_SERVICES 2
#define CLUSTER_PORT_SYSMAN 10 /* Remote execution daemon */
#define CLUSTER_PORT_CLVMD 11 /* Cluster LVM daemon */
#define CLUSTER_PORT_SLM 12 /* LVM SLM (simple lock manager) */
/* Port numbers above this will be blocked when the cluster is inquorate or in
* transition */
#define HIGH_PROTECTED_PORT 9
/* Reasons for leaving the cluster */
#define CLUSTER_LEAVEFLAG_DOWN 0 /* Normal shutdown */
#define CLUSTER_LEAVEFLAG_KILLED 1
#define CLUSTER_LEAVEFLAG_PANIC 2
#define CLUSTER_LEAVEFLAG_REMOVED 3 /* This one can reduce quorum */
#define CLUSTER_LEAVEFLAG_REJECTED 4 /* Not allowed into the cluster in the
* first place */
#define CLUSTER_LEAVEFLAG_INCONSISTENT 5 /* Our view of the cluster is
* in a minority */
#define CLUSTER_LEAVEFLAG_DEAD 6 /* Discovered to be dead */
#define CLUSTER_LEAVEFLAG_FORCE 0x10 /* Forced by command-line */
/* OOB messages sent to a local socket */
#define CLUSTER_OOB_MSG_PORTCLOSED 1
#define CLUSTER_OOB_MSG_STATECHANGE 2
#define CLUSTER_OOB_MSG_SERVICEEVENT 3
/* Sendmsg flags, these are above the normal sendmsg flags so they don't
* interfere */
#define MSG_NOACK 0x010000 /* Don't need an ACK for this message */
#define MSG_QUEUE 0x020000 /* Queue the message for sending later */
#define MSG_MULTICAST 0x080000 /* Message was sent to all nodes in the cluster
*/
#define MSG_ALLINT 0x100000 /* Send out of all interfaces */
#define MSG_REPLYEXP 0x200000 /* Reply is expected */
typedef enum { NODESTATE_REMOTEMEMBER, NODESTATE_JOINING, NODESTATE_MEMBER,
NODESTATE_DEAD } nodestate_t;
struct sockaddr_cl {
unsigned short scl_family;
unsigned char scl_flags;
unsigned char scl_port;
int scl_nodeid;
};
/*
* This is how we pass the multicast & receive sockets into kernel space.
*/
struct cl_passed_sock {
int fd; /* FD of master socket to do multicast on */
int number; /* Socket number, to match up recvonly & bcast
* sockets */
int multicast; /* Is it multicast or receive ? */
};
/* Cluster configuration info passed when we join the cluster */
struct cl_join_cluster_info {
unsigned char votes;
unsigned int expected_votes;
unsigned int two_node;
unsigned int config_version;
char cluster_name[17];
};
/* This is the structure, per node, returned from the membership ioctl */
struct cl_cluster_node {
unsigned int size;
unsigned int node_id;
unsigned int us;
unsigned int leave_reason;
unsigned int incarnation;
nodestate_t state;
char name[MAX_CLUSTER_MEMBER_NAME_LEN];
unsigned char votes;
};
/* The struct passed to the membership ioctls */
struct cl_cluster_nodelist {
uint32_t max_members;
struct cl_cluster_node *nodes;
};
/* Structure passed to SIOCCLUSTER_ISLISTENING */
struct cl_listen_request {
unsigned char port;
int nodeid;
};
/* A Cluster PORTCLOSED message - received by a local user as an OOB message */
struct cl_portclosed_oob {
unsigned char cmd; /* CLUSTER_OOB_MSG_PORTCLOSED */
unsigned char port;
};
/* Get all version numbers or set the config version */
struct cl_version {
unsigned int major;
unsigned int minor;
unsigned int patch;
unsigned int config;
};
/* structure passed to barrier ioctls */
struct cl_barrier_info {
char cmd;
char name[MAX_BARRIER_NAME_LEN];
unsigned int flags;
unsigned long arg;
};
typedef enum { SERVICE_EVENT_STOP, SERVICE_EVENT_START, SERVICE_EVENT_FINISH,
SERVICE_EVENT_LEAVEDONE } service_event_t;
typedef enum { SERVICE_START_FAILED, SERVICE_START_JOIN, SERVICE_START_LEAVE }
service_start_t;
struct cl_service_event {
service_event_t type;
service_start_t start_type;
unsigned int event_id;
unsigned int last_stop;
unsigned int last_start;
unsigned int last_finish;
unsigned int node_count;
};
/* Commands to the barrier ioctl */
#define BARRIER_IOCTL_REGISTER 1
#define BARRIER_IOCTL_CHANGE 2
#define BARRIER_IOCTL_DELETE 3
#define BARRIER_IOCTL_WAIT 4
/* Attributes of a barrier - bitmask */
#define BARRIER_ATTR_AUTODELETE 1
#define BARRIER_ATTR_MULTISTEP 2
#define BARRIER_ATTR_MANUAL 4
#define BARRIER_ATTR_ENABLED 8
#define BARRIER_ATTR_CALLBACK 16
/* Attribute setting commands */
#define BARRIER_SETATTR_AUTODELETE 1
#define BARRIER_SETATTR_MULTISTEP 2
#define BARRIER_SETATTR_ENABLED 3
#define BARRIER_SETATTR_NODES 4
#define BARRIER_SETATTR_CALLBACK 5
#define BARRIER_SETATTR_TIMEOUT 6
#endif