hast.h revision 219721
1204076Spjd/*- 2204076Spjd * Copyright (c) 2009-2010 The FreeBSD Foundation 3219351Spjd * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net> 4204076Spjd * All rights reserved. 5204076Spjd * 6204076Spjd * This software was developed by Pawel Jakub Dawidek under sponsorship from 7204076Spjd * the FreeBSD Foundation. 8204076Spjd * 9204076Spjd * Redistribution and use in source and binary forms, with or without 10204076Spjd * modification, are permitted provided that the following conditions 11204076Spjd * are met: 12204076Spjd * 1. Redistributions of source code must retain the above copyright 13204076Spjd * notice, this list of conditions and the following disclaimer. 14204076Spjd * 2. Redistributions in binary form must reproduce the above copyright 15204076Spjd * notice, this list of conditions and the following disclaimer in the 16204076Spjd * documentation and/or other materials provided with the distribution. 17204076Spjd * 18204076Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 19204076Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20204076Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21204076Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 22204076Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23204076Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24204076Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25204076Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26204076Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27204076Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28204076Spjd * SUCH DAMAGE. 29204076Spjd * 30204076Spjd * $FreeBSD: head/sbin/hastd/hast.h 219721 2011-03-17 21:02:14Z trociny $ 31204076Spjd */ 32204076Spjd 33204076Spjd#ifndef _HAST_H_ 34204076Spjd#define _HAST_H_ 35204076Spjd 36204076Spjd#include <sys/queue.h> 37204076Spjd#include <sys/socket.h> 38204076Spjd 39204076Spjd#include <arpa/inet.h> 40204076Spjd 41204076Spjd#include <netinet/in.h> 42204076Spjd 43204076Spjd#include <limits.h> 44204076Spjd#include <pthread.h> 45204076Spjd#include <stdbool.h> 46204076Spjd#include <stdint.h> 47204076Spjd 48204076Spjd#include <activemap.h> 49204076Spjd 50204076Spjd#include "proto.h" 51204076Spjd 52211882Spjd/* 53211882Spjd * Version history: 54211882Spjd * 0 - initial version 55211882Spjd * 1 - HIO_KEEPALIVE added 56211882Spjd */ 57211882Spjd#define HAST_PROTO_VERSION 1 58204076Spjd 59204076Spjd#define EHAST_OK 0 60204076Spjd#define EHAST_NOENTRY 1 61204076Spjd#define EHAST_INVALID 2 62204076Spjd#define EHAST_NOMEMORY 3 63204076Spjd#define EHAST_UNIMPLEMENTED 4 64204076Spjd 65204076Spjd#define HASTCTL_CMD_UNKNOWN 0 66204076Spjd#define HASTCTL_CMD_SETROLE 1 67204076Spjd#define HASTCTL_CMD_STATUS 2 68204076Spjd 69204076Spjd#define HAST_ROLE_UNDEF 0 70204076Spjd#define HAST_ROLE_INIT 1 71204076Spjd#define HAST_ROLE_PRIMARY 2 72204076Spjd#define HAST_ROLE_SECONDARY 3 73204076Spjd 74204076Spjd#define HAST_SYNCSRC_UNDEF 0 75204076Spjd#define HAST_SYNCSRC_PRIMARY 1 76204076Spjd#define HAST_SYNCSRC_SECONDARY 2 77204076Spjd 78204076Spjd#define HIO_UNDEF 0 79204076Spjd#define HIO_READ 1 80204076Spjd#define HIO_WRITE 2 81204076Spjd#define HIO_DELETE 3 82204076Spjd#define HIO_FLUSH 4 83211882Spjd#define HIO_KEEPALIVE 5 84204076Spjd 85218048Spjd#define HAST_USER "hast" 86207371Spjd#define HAST_TIMEOUT 5 87204076Spjd#define HAST_CONFIG "/etc/hast.conf" 88204076Spjd#define HAST_CONTROL "/var/run/hastctl" 89204076Spjd#define HASTD_PORT 8457 90204076Spjd#define HASTD_LISTEN "tcp4://0.0.0.0:8457" 91204076Spjd#define HASTD_PIDFILE "/var/run/hastd.pid" 92204076Spjd 93204076Spjd/* Default extent size. */ 94204076Spjd#define HAST_EXTENTSIZE 2097152 95204076Spjd/* Default maximum number of extents that are kept dirty. */ 96204076Spjd#define HAST_KEEPDIRTY 64 97204076Spjd 98204076Spjd#define HAST_ADDRSIZE 1024 99204076Spjd#define HAST_TOKEN_SIZE 16 100204076Spjd 101219721Strociny/* Number of seconds to sleep between reconnect retries or keepalive packets. */ 102219721Strociny#define HAST_KEEPALIVE 10 103219721Strociny 104204076Spjdstruct hastd_config { 105204076Spjd /* Address to communicate with hastctl(8). */ 106204076Spjd char hc_controladdr[HAST_ADDRSIZE]; 107204076Spjd /* Protocol-specific data. */ 108204076Spjd struct proto_conn *hc_controlconn; 109217969Spjd /* Incoming control connection. */ 110217969Spjd struct proto_conn *hc_controlin; 111204076Spjd /* Address to listen on. */ 112204076Spjd char hc_listenaddr[HAST_ADDRSIZE]; 113204076Spjd /* Protocol-specific data. */ 114204076Spjd struct proto_conn *hc_listenconn; 115204076Spjd /* List of resources. */ 116204076Spjd TAILQ_HEAD(, hast_resource) hc_resources; 117204076Spjd}; 118204076Spjd 119204076Spjd#define HAST_REPLICATION_FULLSYNC 0 120204076Spjd#define HAST_REPLICATION_MEMSYNC 1 121204076Spjd#define HAST_REPLICATION_ASYNC 2 122204076Spjd 123219354Spjd#define HAST_COMPRESSION_NONE 0 124219354Spjd#define HAST_COMPRESSION_HOLE 1 125219354Spjd#define HAST_COMPRESSION_LZF 2 126219354Spjd 127219351Spjd#define HAST_CHECKSUM_NONE 0 128219351Spjd#define HAST_CHECKSUM_CRC32 1 129219351Spjd#define HAST_CHECKSUM_SHA256 2 130219351Spjd 131204076Spjd/* 132204076Spjd * Structure that describes single resource. 133204076Spjd */ 134204076Spjdstruct hast_resource { 135204076Spjd /* Resource name. */ 136204076Spjd char hr_name[NAME_MAX]; 137204076Spjd /* Replication mode (HAST_REPLICATION_*). */ 138204076Spjd int hr_replication; 139204076Spjd /* Provider name that will appear in /dev/hast/. */ 140204076Spjd char hr_provname[NAME_MAX]; 141204076Spjd /* Synchronization extent size. */ 142204076Spjd int hr_extentsize; 143204076Spjd /* Maximum number of extents that are kept dirty. */ 144204076Spjd int hr_keepdirty; 145211886Spjd /* Path to a program to execute on various events. */ 146211886Spjd char hr_exec[PATH_MAX]; 147219354Spjd /* Compression algorithm. */ 148219354Spjd int hr_compression; 149219351Spjd /* Checksum algorithm. */ 150219351Spjd int hr_checksum; 151204076Spjd 152204076Spjd /* Path to local component. */ 153204076Spjd char hr_localpath[PATH_MAX]; 154204076Spjd /* Descriptor to access local component. */ 155204076Spjd int hr_localfd; 156204076Spjd /* Offset into local component. */ 157204076Spjd off_t hr_localoff; 158204076Spjd /* Size of usable space. */ 159204076Spjd off_t hr_datasize; 160204076Spjd /* Size of entire local provider. */ 161204076Spjd off_t hr_local_mediasize; 162204076Spjd /* Sector size of local provider. */ 163204076Spjd unsigned int hr_local_sectorsize; 164204076Spjd 165204076Spjd /* Descriptor for /dev/ggctl communication. */ 166204076Spjd int hr_ggatefd; 167204076Spjd /* Unit number for ggate communication. */ 168204076Spjd int hr_ggateunit; 169204076Spjd 170204076Spjd /* Address of the remote component. */ 171204076Spjd char hr_remoteaddr[HAST_ADDRSIZE]; 172204076Spjd /* Connection for incoming data. */ 173204076Spjd struct proto_conn *hr_remotein; 174204076Spjd /* Connection for outgoing data. */ 175204076Spjd struct proto_conn *hr_remoteout; 176204076Spjd /* Token to verify both in and out connection are coming from 177204076Spjd the same node (not necessarily from the same address). */ 178204076Spjd unsigned char hr_token[HAST_TOKEN_SIZE]; 179207371Spjd /* Connection timeout. */ 180207371Spjd int hr_timeout; 181204076Spjd 182204076Spjd /* Resource unique identifier. */ 183204076Spjd uint64_t hr_resuid; 184204076Spjd /* Primary's local modification count. */ 185204076Spjd uint64_t hr_primary_localcnt; 186204076Spjd /* Primary's remote modification count. */ 187204076Spjd uint64_t hr_primary_remotecnt; 188204076Spjd /* Secondary's local modification count. */ 189204076Spjd uint64_t hr_secondary_localcnt; 190204076Spjd /* Secondary's remote modification count. */ 191204076Spjd uint64_t hr_secondary_remotecnt; 192204076Spjd /* Synchronization source. */ 193204076Spjd uint8_t hr_syncsrc; 194204076Spjd 195204076Spjd /* Resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 196204076Spjd int hr_role; 197204076Spjd /* Previous resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 198204076Spjd int hr_previous_role; 199204076Spjd /* PID of child worker process. 0 - no child. */ 200204076Spjd pid_t hr_workerpid; 201218218Spjd /* Control commands from parent to child. */ 202204076Spjd struct proto_conn *hr_ctrl; 203212038Spjd /* Events from child to parent. */ 204212038Spjd struct proto_conn *hr_event; 205218218Spjd /* Connection requests from child to parent. */ 206218218Spjd struct proto_conn *hr_conn; 207204076Spjd 208204076Spjd /* Activemap structure. */ 209204076Spjd struct activemap *hr_amp; 210204076Spjd /* Locked used to synchronize access to hr_amp. */ 211204076Spjd pthread_mutex_t hr_amp_lock; 212204076Spjd 213204076Spjd /* Next resource. */ 214204076Spjd TAILQ_ENTRY(hast_resource) hr_next; 215204076Spjd}; 216204076Spjd 217210883Spjdstruct hastd_config *yy_config_parse(const char *config, bool exitonerror); 218204076Spjdvoid yy_config_free(struct hastd_config *config); 219204076Spjd 220204076Spjdvoid yyerror(const char *); 221204076Spjdint yylex(void); 222204076Spjdint yyparse(void); 223204076Spjd 224204076Spjd#endif /* !_HAST_H_ */ 225