2 * Copyright (c) 2009-2010 The FreeBSD Foundation
5 * This software was developed by Pawel Jakub Dawidek under sponsorship from
6 * the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/queue.h>
36 #include <sys/socket.h>
38 #include <arpa/inet.h>
40 #include <netinet/in.h>
47 #include <activemap.h>
54 * 1 - HIO_KEEPALIVE added
56 #define HAST_PROTO_VERSION 1
59 #define EHAST_NOENTRY 1
60 #define EHAST_INVALID 2
61 #define EHAST_NOMEMORY 3
62 #define EHAST_UNIMPLEMENTED 4
64 #define HASTCTL_CMD_UNKNOWN 0
65 #define HASTCTL_CMD_SETROLE 1
66 #define HASTCTL_CMD_STATUS 2
68 #define HAST_ROLE_UNDEF 0
69 #define HAST_ROLE_INIT 1
70 #define HAST_ROLE_PRIMARY 2
71 #define HAST_ROLE_SECONDARY 3
73 #define HAST_SYNCSRC_UNDEF 0
74 #define HAST_SYNCSRC_PRIMARY 1
75 #define HAST_SYNCSRC_SECONDARY 2
82 #define HIO_KEEPALIVE 5
84 #define HAST_TIMEOUT 5
85 #define HAST_CONFIG "/etc/hast.conf"
86 #define HAST_CONTROL "/var/run/hastctl"
87 #define HASTD_PORT 8457
88 #define HASTD_LISTEN "tcp4://0.0.0.0:8457"
89 #define HASTD_PIDFILE "/var/run/hastd.pid"
91 /* Default extent size. */
92 #define HAST_EXTENTSIZE 2097152
93 /* Default maximum number of extents that are kept dirty. */
94 #define HAST_KEEPDIRTY 64
96 #define HAST_ADDRSIZE 1024
97 #define HAST_TOKEN_SIZE 16
100 /* Address to communicate with hastctl(8). */
101 char hc_controladdr[HAST_ADDRSIZE];
102 /* Protocol-specific data. */
103 struct proto_conn *hc_controlconn;
104 /* Address to listen on. */
105 char hc_listenaddr[HAST_ADDRSIZE];
106 /* Protocol-specific data. */
107 struct proto_conn *hc_listenconn;
108 /* List of resources. */
109 TAILQ_HEAD(, hast_resource) hc_resources;
112 #define HAST_REPLICATION_FULLSYNC 0
113 #define HAST_REPLICATION_MEMSYNC 1
114 #define HAST_REPLICATION_ASYNC 2
117 * Structure that describes single resource.
119 struct hast_resource {
121 char hr_name[NAME_MAX];
122 /* Replication mode (HAST_REPLICATION_*). */
124 /* Provider name that will appear in /dev/hast/. */
125 char hr_provname[NAME_MAX];
126 /* Synchronization extent size. */
128 /* Maximum number of extents that are kept dirty. */
130 /* Path to a program to execute on various events. */
131 char hr_exec[PATH_MAX];
133 /* Path to local component. */
134 char hr_localpath[PATH_MAX];
135 /* Descriptor to access local component. */
137 /* Offset into local component. */
139 /* Size of usable space. */
141 /* Size of entire local provider. */
142 off_t hr_local_mediasize;
143 /* Sector size of local provider. */
144 unsigned int hr_local_sectorsize;
146 /* Descriptor for /dev/ggctl communication. */
148 /* Unit number for ggate communication. */
151 /* Address of the remote component. */
152 char hr_remoteaddr[HAST_ADDRSIZE];
153 /* Connection for incoming data. */
154 struct proto_conn *hr_remotein;
155 /* Connection for outgoing data. */
156 struct proto_conn *hr_remoteout;
157 /* Token to verify both in and out connection are coming from
158 the same node (not necessarily from the same address). */
159 unsigned char hr_token[HAST_TOKEN_SIZE];
160 /* Connection timeout. */
163 /* Resource unique identifier. */
165 /* Primary's local modification count. */
166 uint64_t hr_primary_localcnt;
167 /* Primary's remote modification count. */
168 uint64_t hr_primary_remotecnt;
169 /* Secondary's local modification count. */
170 uint64_t hr_secondary_localcnt;
171 /* Secondary's remote modification count. */
172 uint64_t hr_secondary_remotecnt;
173 /* Synchronization source. */
176 /* Resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */
178 /* Previous resource role: HAST_ROLE_{INIT,PRIMARY,SECONDARY}. */
179 int hr_previous_role;
180 /* PID of child worker process. 0 - no child. */
182 /* Control connection between parent and child. */
183 struct proto_conn *hr_ctrl;
184 /* Events from child to parent. */
185 struct proto_conn *hr_event;
187 /* Activemap structure. */
188 struct activemap *hr_amp;
189 /* Locked used to synchronize access to hr_amp. */
190 pthread_mutex_t hr_amp_lock;
193 TAILQ_ENTRY(hast_resource) hr_next;
196 struct hastd_config *yy_config_parse(const char *config, bool exitonerror);
197 void yy_config_free(struct hastd_config *config);
199 void yyerror(const char *);
203 #endif /* !_HAST_H_ */