hast.h revision 226462
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 226462 2011-10-17 09:59:04Z pjd $ 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 85222108Spjd#define HAST_USER "hast" 86222108Spjd#define HAST_TIMEOUT 20 87222108Spjd#define HAST_CONFIG "/etc/hast.conf" 88222108Spjd#define HAST_CONTROL "/var/run/hastctl" 89222119Spjd#define HASTD_LISTEN_TCP4 "tcp4://0.0.0.0:8457" 90222119Spjd#define HASTD_LISTEN_TCP6 "tcp6://[::]:8457" 91222108Spjd#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 104222108Spjdstruct hastd_listen { 105222108Spjd /* Address to listen on. */ 106222108Spjd char hl_addr[HAST_ADDRSIZE]; 107222108Spjd /* Protocol-specific data. */ 108222108Spjd struct proto_conn *hl_conn; 109222108Spjd TAILQ_ENTRY(hastd_listen) hl_next; 110222108Spjd}; 111222108Spjd 112204076Spjdstruct hastd_config { 113204076Spjd /* Address to communicate with hastctl(8). */ 114226462Spjd char hc_controladdr[HAST_ADDRSIZE]; 115204076Spjd /* Protocol-specific data. */ 116204076Spjd struct proto_conn *hc_controlconn; 117217969Spjd /* Incoming control connection. */ 118217969Spjd struct proto_conn *hc_controlin; 119222108Spjd /* List of addresses to listen on. */ 120222108Spjd TAILQ_HEAD(, hastd_listen) hc_listen; 121204076Spjd /* List of resources. */ 122204076Spjd TAILQ_HEAD(, hast_resource) hc_resources; 123204076Spjd}; 124204076Spjd 125204076Spjd#define HAST_REPLICATION_FULLSYNC 0 126204076Spjd#define HAST_REPLICATION_MEMSYNC 1 127204076Spjd#define HAST_REPLICATION_ASYNC 2 128204076Spjd 129219354Spjd#define HAST_COMPRESSION_NONE 0 130219354Spjd#define HAST_COMPRESSION_HOLE 1 131219354Spjd#define HAST_COMPRESSION_LZF 2 132219354Spjd 133219351Spjd#define HAST_CHECKSUM_NONE 0 134219351Spjd#define HAST_CHECKSUM_CRC32 1 135219351Spjd#define HAST_CHECKSUM_SHA256 2 136219351Spjd 137204076Spjd/* 138204076Spjd * Structure that describes single resource. 139204076Spjd */ 140204076Spjdstruct hast_resource { 141204076Spjd /* Resource name. */ 142204076Spjd char hr_name[NAME_MAX]; 143204076Spjd /* Replication mode (HAST_REPLICATION_*). */ 144204076Spjd int hr_replication; 145204076Spjd /* Provider name that will appear in /dev/hast/. */ 146204076Spjd char hr_provname[NAME_MAX]; 147204076Spjd /* Synchronization extent size. */ 148204076Spjd int hr_extentsize; 149204076Spjd /* Maximum number of extents that are kept dirty. */ 150204076Spjd int hr_keepdirty; 151211886Spjd /* Path to a program to execute on various events. */ 152211886Spjd char hr_exec[PATH_MAX]; 153219354Spjd /* Compression algorithm. */ 154219354Spjd int hr_compression; 155219351Spjd /* Checksum algorithm. */ 156219351Spjd int hr_checksum; 157204076Spjd 158204076Spjd /* Path to local component. */ 159204076Spjd char hr_localpath[PATH_MAX]; 160204076Spjd /* Descriptor to access local component. */ 161204076Spjd int hr_localfd; 162204076Spjd /* Offset into local component. */ 163204076Spjd off_t hr_localoff; 164204076Spjd /* Size of usable space. */ 165204076Spjd off_t hr_datasize; 166204076Spjd /* Size of entire local provider. */ 167204076Spjd off_t hr_local_mediasize; 168204076Spjd /* Sector size of local provider. */ 169204076Spjd unsigned int hr_local_sectorsize; 170225832Spjd /* Is flushing write cache supported by the local provider? */ 171225832Spjd bool hr_localflush; 172225830Spjd /* Flush write cache on metadata updates? */ 173225830Spjd int hr_metaflush; 174204076Spjd 175204076Spjd /* Descriptor for /dev/ggctl communication. */ 176204076Spjd int hr_ggatefd; 177204076Spjd /* Unit number for ggate communication. */ 178204076Spjd int hr_ggateunit; 179204076Spjd 180204076Spjd /* Address of the remote component. */ 181204076Spjd char hr_remoteaddr[HAST_ADDRSIZE]; 182219818Spjd /* Local address to bind to for outgoing connections. */ 183219818Spjd char hr_sourceaddr[HAST_ADDRSIZE]; 184204076Spjd /* Connection for incoming data. */ 185204076Spjd struct proto_conn *hr_remotein; 186204076Spjd /* Connection for outgoing data. */ 187204076Spjd struct proto_conn *hr_remoteout; 188204076Spjd /* Token to verify both in and out connection are coming from 189204076Spjd the same node (not necessarily from the same address). */ 190204076Spjd unsigned char hr_token[HAST_TOKEN_SIZE]; 191207371Spjd /* Connection timeout. */ 192207371Spjd int hr_timeout; 193204076Spjd 194204076Spjd /* Resource unique identifier. */ 195204076Spjd uint64_t hr_resuid; 196204076Spjd /* Primary's local modification count. */ 197204076Spjd uint64_t hr_primary_localcnt; 198204076Spjd /* Primary's remote modification count. */ 199204076Spjd uint64_t hr_primary_remotecnt; 200204076Spjd /* Secondary's local modification count. */ 201204076Spjd uint64_t hr_secondary_localcnt; 202204076Spjd /* Secondary's remote modification count. */ 203204076Spjd uint64_t hr_secondary_remotecnt; 204204076Spjd /* Synchronization source. */ 205204076Spjd uint8_t hr_syncsrc; 206204076Spjd 207204076Spjd /* Resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 208204076Spjd int hr_role; 209204076Spjd /* Previous resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 210204076Spjd int hr_previous_role; 211204076Spjd /* PID of child worker process. 0 - no child. */ 212204076Spjd pid_t hr_workerpid; 213218218Spjd /* Control commands from parent to child. */ 214204076Spjd struct proto_conn *hr_ctrl; 215212038Spjd /* Events from child to parent. */ 216212038Spjd struct proto_conn *hr_event; 217218218Spjd /* Connection requests from child to parent. */ 218218218Spjd struct proto_conn *hr_conn; 219204076Spjd 220204076Spjd /* Activemap structure. */ 221204076Spjd struct activemap *hr_amp; 222204076Spjd /* Locked used to synchronize access to hr_amp. */ 223204076Spjd pthread_mutex_t hr_amp_lock; 224204076Spjd 225222228Spjd /* Number of BIO_READ requests. */ 226222228Spjd uint64_t hr_stat_read; 227222228Spjd /* Number of BIO_WRITE requests. */ 228222228Spjd uint64_t hr_stat_write; 229222228Spjd /* Number of BIO_DELETE requests. */ 230222228Spjd uint64_t hr_stat_delete; 231222228Spjd /* Number of BIO_FLUSH requests. */ 232222228Spjd uint64_t hr_stat_flush; 233222228Spjd /* Number of activemap updates. */ 234222228Spjd uint64_t hr_stat_activemap_update; 235222228Spjd 236204076Spjd /* Next resource. */ 237204076Spjd TAILQ_ENTRY(hast_resource) hr_next; 238204076Spjd}; 239204076Spjd 240210883Spjdstruct hastd_config *yy_config_parse(const char *config, bool exitonerror); 241204076Spjdvoid yy_config_free(struct hastd_config *config); 242204076Spjd 243204076Spjdvoid yyerror(const char *); 244204076Spjdint yylex(void); 245204076Spjdint yyparse(void); 246204076Spjd 247204076Spjd#endif /* !_HAST_H_ */ 248