hast.h revision 222119
1181344Sdfr/*- 2181344Sdfr * Copyright (c) 2009-2010 The FreeBSD Foundation 3181344Sdfr * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net> 4181344Sdfr * All rights reserved. 5181344Sdfr * 6181344Sdfr * This software was developed by Pawel Jakub Dawidek under sponsorship from 7181344Sdfr * the FreeBSD Foundation. 8181344Sdfr * 9181344Sdfr * Redistribution and use in source and binary forms, with or without 10181344Sdfr * modification, are permitted provided that the following conditions 11181344Sdfr * are met: 12181344Sdfr * 1. Redistributions of source code must retain the above copyright 13181344Sdfr * notice, this list of conditions and the following disclaimer. 14181344Sdfr * 2. Redistributions in binary form must reproduce the above copyright 15181344Sdfr * notice, this list of conditions and the following disclaimer in the 16181344Sdfr * documentation and/or other materials provided with the distribution. 17181344Sdfr * 18181344Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 19181344Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20181344Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21181344Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 22181344Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23181344Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24181344Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25181344Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26181344Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27181344Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28181344Sdfr * SUCH DAMAGE. 29181344Sdfr * 30181344Sdfr * $FreeBSD: head/sbin/hastd/hast.h 222119 2011-05-20 11:15:27Z pjd $ 31181344Sdfr */ 32181344Sdfr 33181344Sdfr#ifndef _HAST_H_ 34181344Sdfr#define _HAST_H_ 35181344Sdfr 36181344Sdfr#include <sys/queue.h> 37181344Sdfr#include <sys/socket.h> 38181344Sdfr 39181344Sdfr#include <arpa/inet.h> 40181344Sdfr 41181344Sdfr#include <netinet/in.h> 42181344Sdfr 43181344Sdfr#include <limits.h> 44181344Sdfr#include <pthread.h> 45181344Sdfr#include <stdbool.h> 46181344Sdfr#include <stdint.h> 47181344Sdfr 48181344Sdfr#include <activemap.h> 49181344Sdfr 50181344Sdfr#include "proto.h" 51181344Sdfr 52181344Sdfr/* 53181344Sdfr * Version history: 54181344Sdfr * 0 - initial version 55181344Sdfr * 1 - HIO_KEEPALIVE added 56181344Sdfr */ 57181344Sdfr#define HAST_PROTO_VERSION 1 58181344Sdfr 59181344Sdfr#define EHAST_OK 0 60181344Sdfr#define EHAST_NOENTRY 1 61181344Sdfr#define EHAST_INVALID 2 62181344Sdfr#define EHAST_NOMEMORY 3 63181344Sdfr#define EHAST_UNIMPLEMENTED 4 64181344Sdfr 65181344Sdfr#define HASTCTL_CMD_UNKNOWN 0 66181344Sdfr#define HASTCTL_CMD_SETROLE 1 67181344Sdfr#define HASTCTL_CMD_STATUS 2 68181344Sdfr 69181344Sdfr#define HAST_ROLE_UNDEF 0 70181344Sdfr#define HAST_ROLE_INIT 1 71181344Sdfr#define HAST_ROLE_PRIMARY 2 72181344Sdfr#define HAST_ROLE_SECONDARY 3 73181344Sdfr 74181344Sdfr#define HAST_SYNCSRC_UNDEF 0 75181344Sdfr#define HAST_SYNCSRC_PRIMARY 1 76181344Sdfr#define HAST_SYNCSRC_SECONDARY 2 77181344Sdfr 78181344Sdfr#define HIO_UNDEF 0 79181344Sdfr#define HIO_READ 1 80181344Sdfr#define HIO_WRITE 2 81181344Sdfr#define HIO_DELETE 3 82181344Sdfr#define HIO_FLUSH 4 83181344Sdfr#define HIO_KEEPALIVE 5 84181344Sdfr 85181344Sdfr#define HAST_USER "hast" 86181344Sdfr#define HAST_TIMEOUT 20 87181344Sdfr#define HAST_CONFIG "/etc/hast.conf" 88181344Sdfr#define HAST_CONTROL "/var/run/hastctl" 89181344Sdfr#define HASTD_LISTEN_TCP4 "tcp4://0.0.0.0:8457" 90181344Sdfr#define HASTD_LISTEN_TCP6 "tcp6://[::]:8457" 91181344Sdfr#define HASTD_PIDFILE "/var/run/hastd.pid" 92181344Sdfr 93181344Sdfr/* Default extent size. */ 94181344Sdfr#define HAST_EXTENTSIZE 2097152 95181344Sdfr/* Default maximum number of extents that are kept dirty. */ 96#define HAST_KEEPDIRTY 64 97 98#define HAST_ADDRSIZE 1024 99#define HAST_TOKEN_SIZE 16 100 101/* Number of seconds to sleep between reconnect retries or keepalive packets. */ 102#define HAST_KEEPALIVE 10 103 104struct hastd_listen { 105 /* Address to listen on. */ 106 char hl_addr[HAST_ADDRSIZE]; 107 /* Protocol-specific data. */ 108 struct proto_conn *hl_conn; 109 TAILQ_ENTRY(hastd_listen) hl_next; 110}; 111 112struct hastd_config { 113 /* Address to communicate with hastctl(8). */ 114 char hc_controladdr[HAST_ADDRSIZE]; 115 /* Protocol-specific data. */ 116 struct proto_conn *hc_controlconn; 117 /* Incoming control connection. */ 118 struct proto_conn *hc_controlin; 119 /* List of addresses to listen on. */ 120 TAILQ_HEAD(, hastd_listen) hc_listen; 121 /* List of resources. */ 122 TAILQ_HEAD(, hast_resource) hc_resources; 123}; 124 125#define HAST_REPLICATION_FULLSYNC 0 126#define HAST_REPLICATION_MEMSYNC 1 127#define HAST_REPLICATION_ASYNC 2 128 129#define HAST_COMPRESSION_NONE 0 130#define HAST_COMPRESSION_HOLE 1 131#define HAST_COMPRESSION_LZF 2 132 133#define HAST_CHECKSUM_NONE 0 134#define HAST_CHECKSUM_CRC32 1 135#define HAST_CHECKSUM_SHA256 2 136 137/* 138 * Structure that describes single resource. 139 */ 140struct hast_resource { 141 /* Resource name. */ 142 char hr_name[NAME_MAX]; 143 /* Replication mode (HAST_REPLICATION_*). */ 144 int hr_replication; 145 /* Provider name that will appear in /dev/hast/. */ 146 char hr_provname[NAME_MAX]; 147 /* Synchronization extent size. */ 148 int hr_extentsize; 149 /* Maximum number of extents that are kept dirty. */ 150 int hr_keepdirty; 151 /* Path to a program to execute on various events. */ 152 char hr_exec[PATH_MAX]; 153 /* Compression algorithm. */ 154 int hr_compression; 155 /* Checksum algorithm. */ 156 int hr_checksum; 157 158 /* Path to local component. */ 159 char hr_localpath[PATH_MAX]; 160 /* Descriptor to access local component. */ 161 int hr_localfd; 162 /* Offset into local component. */ 163 off_t hr_localoff; 164 /* Size of usable space. */ 165 off_t hr_datasize; 166 /* Size of entire local provider. */ 167 off_t hr_local_mediasize; 168 /* Sector size of local provider. */ 169 unsigned int hr_local_sectorsize; 170 171 /* Descriptor for /dev/ggctl communication. */ 172 int hr_ggatefd; 173 /* Unit number for ggate communication. */ 174 int hr_ggateunit; 175 176 /* Address of the remote component. */ 177 char hr_remoteaddr[HAST_ADDRSIZE]; 178 /* Local address to bind to for outgoing connections. */ 179 char hr_sourceaddr[HAST_ADDRSIZE]; 180 /* Connection for incoming data. */ 181 struct proto_conn *hr_remotein; 182 /* Connection for outgoing data. */ 183 struct proto_conn *hr_remoteout; 184 /* Token to verify both in and out connection are coming from 185 the same node (not necessarily from the same address). */ 186 unsigned char hr_token[HAST_TOKEN_SIZE]; 187 /* Connection timeout. */ 188 int hr_timeout; 189 190 /* Resource unique identifier. */ 191 uint64_t hr_resuid; 192 /* Primary's local modification count. */ 193 uint64_t hr_primary_localcnt; 194 /* Primary's remote modification count. */ 195 uint64_t hr_primary_remotecnt; 196 /* Secondary's local modification count. */ 197 uint64_t hr_secondary_localcnt; 198 /* Secondary's remote modification count. */ 199 uint64_t hr_secondary_remotecnt; 200 /* Synchronization source. */ 201 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