hast.h revision 217969
1204076Spjd/*- 2204076Spjd * Copyright (c) 2009-2010 The FreeBSD Foundation 3204076Spjd * All rights reserved. 4204076Spjd * 5204076Spjd * This software was developed by Pawel Jakub Dawidek under sponsorship from 6204076Spjd * the FreeBSD Foundation. 7204076Spjd * 8204076Spjd * Redistribution and use in source and binary forms, with or without 9204076Spjd * modification, are permitted provided that the following conditions 10204076Spjd * are met: 11204076Spjd * 1. Redistributions of source code must retain the above copyright 12204076Spjd * notice, this list of conditions and the following disclaimer. 13204076Spjd * 2. Redistributions in binary form must reproduce the above copyright 14204076Spjd * notice, this list of conditions and the following disclaimer in the 15204076Spjd * documentation and/or other materials provided with the distribution. 16204076Spjd * 17204076Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18204076Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19204076Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20204076Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21204076Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22204076Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23204076Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24204076Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25204076Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26204076Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27204076Spjd * SUCH DAMAGE. 28204076Spjd * 29204076Spjd * $FreeBSD: head/sbin/hastd/hast.h 217969 2011-01-27 19:33:57Z pjd $ 30204076Spjd */ 31204076Spjd 32204076Spjd#ifndef _HAST_H_ 33204076Spjd#define _HAST_H_ 34204076Spjd 35204076Spjd#include <sys/queue.h> 36204076Spjd#include <sys/socket.h> 37204076Spjd 38204076Spjd#include <arpa/inet.h> 39204076Spjd 40204076Spjd#include <netinet/in.h> 41204076Spjd 42204076Spjd#include <limits.h> 43204076Spjd#include <pthread.h> 44204076Spjd#include <stdbool.h> 45204076Spjd#include <stdint.h> 46204076Spjd 47204076Spjd#include <activemap.h> 48204076Spjd 49204076Spjd#include "proto.h" 50204076Spjd 51211882Spjd/* 52211882Spjd * Version history: 53211882Spjd * 0 - initial version 54211882Spjd * 1 - HIO_KEEPALIVE added 55211882Spjd */ 56211882Spjd#define HAST_PROTO_VERSION 1 57204076Spjd 58204076Spjd#define EHAST_OK 0 59204076Spjd#define EHAST_NOENTRY 1 60204076Spjd#define EHAST_INVALID 2 61204076Spjd#define EHAST_NOMEMORY 3 62204076Spjd#define EHAST_UNIMPLEMENTED 4 63204076Spjd 64204076Spjd#define HASTCTL_CMD_UNKNOWN 0 65204076Spjd#define HASTCTL_CMD_SETROLE 1 66204076Spjd#define HASTCTL_CMD_STATUS 2 67204076Spjd 68204076Spjd#define HAST_ROLE_UNDEF 0 69204076Spjd#define HAST_ROLE_INIT 1 70204076Spjd#define HAST_ROLE_PRIMARY 2 71204076Spjd#define HAST_ROLE_SECONDARY 3 72204076Spjd 73204076Spjd#define HAST_SYNCSRC_UNDEF 0 74204076Spjd#define HAST_SYNCSRC_PRIMARY 1 75204076Spjd#define HAST_SYNCSRC_SECONDARY 2 76204076Spjd 77204076Spjd#define HIO_UNDEF 0 78204076Spjd#define HIO_READ 1 79204076Spjd#define HIO_WRITE 2 80204076Spjd#define HIO_DELETE 3 81204076Spjd#define HIO_FLUSH 4 82211882Spjd#define HIO_KEEPALIVE 5 83204076Spjd 84207371Spjd#define HAST_TIMEOUT 5 85204076Spjd#define HAST_CONFIG "/etc/hast.conf" 86204076Spjd#define HAST_CONTROL "/var/run/hastctl" 87204076Spjd#define HASTD_PORT 8457 88204076Spjd#define HASTD_LISTEN "tcp4://0.0.0.0:8457" 89204076Spjd#define HASTD_PIDFILE "/var/run/hastd.pid" 90204076Spjd 91204076Spjd/* Default extent size. */ 92204076Spjd#define HAST_EXTENTSIZE 2097152 93204076Spjd/* Default maximum number of extents that are kept dirty. */ 94204076Spjd#define HAST_KEEPDIRTY 64 95204076Spjd 96204076Spjd#define HAST_ADDRSIZE 1024 97204076Spjd#define HAST_TOKEN_SIZE 16 98204076Spjd 99204076Spjdstruct hastd_config { 100204076Spjd /* Address to communicate with hastctl(8). */ 101204076Spjd char hc_controladdr[HAST_ADDRSIZE]; 102204076Spjd /* Protocol-specific data. */ 103204076Spjd struct proto_conn *hc_controlconn; 104217969Spjd /* Incoming control connection. */ 105217969Spjd struct proto_conn *hc_controlin; 106204076Spjd /* Address to listen on. */ 107204076Spjd char hc_listenaddr[HAST_ADDRSIZE]; 108204076Spjd /* Protocol-specific data. */ 109204076Spjd struct proto_conn *hc_listenconn; 110204076Spjd /* List of resources. */ 111204076Spjd TAILQ_HEAD(, hast_resource) hc_resources; 112204076Spjd}; 113204076Spjd 114204076Spjd#define HAST_REPLICATION_FULLSYNC 0 115204076Spjd#define HAST_REPLICATION_MEMSYNC 1 116204076Spjd#define HAST_REPLICATION_ASYNC 2 117204076Spjd 118204076Spjd/* 119204076Spjd * Structure that describes single resource. 120204076Spjd */ 121204076Spjdstruct hast_resource { 122204076Spjd /* Resource name. */ 123204076Spjd char hr_name[NAME_MAX]; 124204076Spjd /* Replication mode (HAST_REPLICATION_*). */ 125204076Spjd int hr_replication; 126204076Spjd /* Provider name that will appear in /dev/hast/. */ 127204076Spjd char hr_provname[NAME_MAX]; 128204076Spjd /* Synchronization extent size. */ 129204076Spjd int hr_extentsize; 130204076Spjd /* Maximum number of extents that are kept dirty. */ 131204076Spjd int hr_keepdirty; 132211886Spjd /* Path to a program to execute on various events. */ 133211886Spjd char hr_exec[PATH_MAX]; 134204076Spjd 135204076Spjd /* Path to local component. */ 136204076Spjd char hr_localpath[PATH_MAX]; 137204076Spjd /* Descriptor to access local component. */ 138204076Spjd int hr_localfd; 139204076Spjd /* Offset into local component. */ 140204076Spjd off_t hr_localoff; 141204076Spjd /* Size of usable space. */ 142204076Spjd off_t hr_datasize; 143204076Spjd /* Size of entire local provider. */ 144204076Spjd off_t hr_local_mediasize; 145204076Spjd /* Sector size of local provider. */ 146204076Spjd unsigned int hr_local_sectorsize; 147204076Spjd 148204076Spjd /* Descriptor for /dev/ggctl communication. */ 149204076Spjd int hr_ggatefd; 150204076Spjd /* Unit number for ggate communication. */ 151204076Spjd int hr_ggateunit; 152204076Spjd 153204076Spjd /* Address of the remote component. */ 154204076Spjd char hr_remoteaddr[HAST_ADDRSIZE]; 155204076Spjd /* Connection for incoming data. */ 156204076Spjd struct proto_conn *hr_remotein; 157204076Spjd /* Connection for outgoing data. */ 158204076Spjd struct proto_conn *hr_remoteout; 159204076Spjd /* Token to verify both in and out connection are coming from 160204076Spjd the same node (not necessarily from the same address). */ 161204076Spjd unsigned char hr_token[HAST_TOKEN_SIZE]; 162207371Spjd /* Connection timeout. */ 163207371Spjd int hr_timeout; 164204076Spjd 165204076Spjd /* Resource unique identifier. */ 166204076Spjd uint64_t hr_resuid; 167204076Spjd /* Primary's local modification count. */ 168204076Spjd uint64_t hr_primary_localcnt; 169204076Spjd /* Primary's remote modification count. */ 170204076Spjd uint64_t hr_primary_remotecnt; 171204076Spjd /* Secondary's local modification count. */ 172204076Spjd uint64_t hr_secondary_localcnt; 173204076Spjd /* Secondary's remote modification count. */ 174204076Spjd uint64_t hr_secondary_remotecnt; 175204076Spjd /* Synchronization source. */ 176204076Spjd uint8_t hr_syncsrc; 177204076Spjd 178204076Spjd /* Resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 179204076Spjd int hr_role; 180204076Spjd /* Previous resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 181204076Spjd int hr_previous_role; 182204076Spjd /* PID of child worker process. 0 - no child. */ 183204076Spjd pid_t hr_workerpid; 184204076Spjd /* Control connection between parent and child. */ 185204076Spjd struct proto_conn *hr_ctrl; 186212038Spjd /* Events from child to parent. */ 187212038Spjd struct proto_conn *hr_event; 188204076Spjd 189204076Spjd /* Activemap structure. */ 190204076Spjd struct activemap *hr_amp; 191204076Spjd /* Locked used to synchronize access to hr_amp. */ 192204076Spjd pthread_mutex_t hr_amp_lock; 193204076Spjd 194204076Spjd /* Next resource. */ 195204076Spjd TAILQ_ENTRY(hast_resource) hr_next; 196204076Spjd}; 197204076Spjd 198210883Spjdstruct hastd_config *yy_config_parse(const char *config, bool exitonerror); 199204076Spjdvoid yy_config_free(struct hastd_config *config); 200204076Spjd 201204076Spjdvoid yyerror(const char *); 202204076Spjdint yylex(void); 203204076Spjdint yyparse(void); 204204076Spjd 205204076Spjd#endif /* !_HAST_H_ */ 206