hast.h revision 222108
1204076Spjd/*- 2204076Spjd * Copyright (c) 2009-2010 The FreeBSD Foundation 3204076Spjd * 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 222108 2011-05-19 23:18:42Z 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" 51211882Spjd 52211882Spjd/* 53211882Spjd * Version history: 54211882Spjd * 0 - initial version 55211882Spjd * 1 - HIO_KEEPALIVE added 56211882Spjd */ 57204076Spjd#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 82211882Spjd#define HIO_FLUSH 4 83204076Spjd#define HIO_KEEPALIVE 5 84207371Spjd 85204076Spjd#define HAST_USER "hast" 86204076Spjd#define HAST_TIMEOUT 20 87204076Spjd#define HAST_CONFIG "/etc/hast.conf" 88204076Spjd#define HAST_CONTROL "/var/run/hastctl" 89204076Spjd#define HASTD_LISTEN_IPV4 "tcp4://0.0.0.0:8457" 90204076Spjd#define HASTD_LISTEN_IPV6 "tcp6://[::]: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 101204076Spjd/* Number of seconds to sleep between reconnect retries or keepalive packets. */ 102204076Spjd#define HAST_KEEPALIVE 10 103204076Spjd 104204076Spjdstruct hastd_listen { 105204076Spjd /* Address to listen on. */ 106204076Spjd char hl_addr[HAST_ADDRSIZE]; 107204076Spjd /* Protocol-specific data. */ 108204076Spjd struct proto_conn *hl_conn; 109204076Spjd TAILQ_ENTRY(hastd_listen) hl_next; 110204076Spjd}; 111204076Spjd 112204076Spjdstruct hastd_config { 113204076Spjd /* Address to communicate with hastctl(8). */ 114204076Spjd char hc_controladdr[HAST_ADDRSIZE]; 115204076Spjd /* Protocol-specific data. */ 116204076Spjd struct proto_conn *hc_controlconn; 117204076Spjd /* Incoming control connection. */ 118204076Spjd struct proto_conn *hc_controlin; 119204076Spjd /* List of addresses to listen on. */ 120204076Spjd 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 129204076Spjd#define HAST_COMPRESSION_NONE 0 130211886Spjd#define HAST_COMPRESSION_HOLE 1 131211886Spjd#define HAST_COMPRESSION_LZF 2 132204076Spjd 133204076Spjd#define HAST_CHECKSUM_NONE 0 134204076Spjd#define HAST_CHECKSUM_CRC32 1 135204076Spjd#define HAST_CHECKSUM_SHA256 2 136204076Spjd 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; 151204076Spjd /* Path to a program to execute on various events. */ 152204076Spjd char hr_exec[PATH_MAX]; 153204076Spjd /* Compression algorithm. */ 154204076Spjd int hr_compression; 155204076Spjd /* Checksum algorithm. */ 156204076Spjd int hr_checksum; 157204076Spjd 158204076Spjd /* Path to local component. */ 159204076Spjd char hr_localpath[PATH_MAX]; 160207371Spjd /* Descriptor to access local component. */ 161207371Spjd 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; 170204076Spjd 171204076Spjd /* Descriptor for /dev/ggctl communication. */ 172204076Spjd int hr_ggatefd; 173204076Spjd /* Unit number for ggate communication. */ 174204076Spjd int hr_ggateunit; 175204076Spjd 176204076Spjd /* Address of the remote component. */ 177204076Spjd char hr_remoteaddr[HAST_ADDRSIZE]; 178204076Spjd /* Local address to bind to for outgoing connections. */ 179204076Spjd char hr_sourceaddr[HAST_ADDRSIZE]; 180204076Spjd /* Connection for incoming data. */ 181204076Spjd struct proto_conn *hr_remotein; 182204076Spjd /* Connection for outgoing data. */ 183204076Spjd struct proto_conn *hr_remoteout; 184204076Spjd /* Token to verify both in and out connection are coming from 185204076Spjd the same node (not necessarily from the same address). */ 186204076Spjd unsigned char hr_token[HAST_TOKEN_SIZE]; 187204076Spjd /* Connection timeout. */ 188204076Spjd int hr_timeout; 189204076Spjd 190204076Spjd /* Resource unique identifier. */ 191204076Spjd uint64_t hr_resuid; 192204076Spjd /* Primary's local modification count. */ 193204076Spjd uint64_t hr_primary_localcnt; 194210883Spjd /* Primary's remote modification count. */ 195204076Spjd uint64_t hr_primary_remotecnt; 196204076Spjd /* Secondary's local modification count. */ 197204076Spjd uint64_t hr_secondary_localcnt; 198204076Spjd /* Secondary's remote modification count. */ 199204076Spjd uint64_t hr_secondary_remotecnt; 200204076Spjd /* Synchronization source. */ 201204076Spjd uint8_t hr_syncsrc; 202 203 /* Resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 204 int hr_role; 205 /* Previous resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */ 206 int hr_previous_role; 207 /* PID of child worker process. 0 - no child. */ 208 pid_t hr_workerpid; 209 /* Control commands from parent to child. */ 210 struct proto_conn *hr_ctrl; 211 /* Events from child to parent. */ 212 struct proto_conn *hr_event; 213 /* Connection requests from child to parent. */ 214 struct proto_conn *hr_conn; 215 216 /* Activemap structure. */ 217 struct activemap *hr_amp; 218 /* Locked used to synchronize access to hr_amp. */ 219 pthread_mutex_t hr_amp_lock; 220 221 /* Next resource. */ 222 TAILQ_ENTRY(hast_resource) hr_next; 223}; 224 225struct hastd_config *yy_config_parse(const char *config, bool exitonerror); 226void yy_config_free(struct hastd_config *config); 227 228void yyerror(const char *); 229int yylex(void); 230int yyparse(void); 231 232#endif /* !_HAST_H_ */ 233