4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
41 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
42 * Copyright (c) 2012 by Delphix. All rights reserved.
53 #define SM_DIRECTORY_MODE 00755
54 #define MAX_HASHSIZE 50
55 #define SM_RPC_TIMEOUT 15
56 #define PERCENT_MINJOIN 10
59 #define INC_DELAYTIME 30
60 #define MAX_DELAYTIME 300
61 #define SM_CLTS_TIMEOUT 15
62 /* max strlen of /statmon/state, /statmon/sm.bak, /statmon/sm */
63 #define SM_MAXPATHLEN 17
64 /* Increment size for realloc of array host_name */
65 #define HOST_NAME_INCR 5
67 /* supported address family names in /var/statmon symlinks */
68 #define SM_ADDR_IPV4 "ipv4"
69 #define SM_ADDR_IPV6 "ipv6"
71 /* Supported for readdir_r() */
72 #define MAXDIRENT (sizeof (struct dirent) + _POSIX_PATH_MAX + 1)
74 /* Structure entry for monitor table (mon_table) */
76 mon id
; /* mon information: mon_name, my_id */
77 struct mon_entry
*prev
; /* Prev ptr to prev entry in hash */
78 struct mon_entry
*nxt
; /* Next ptr to next entry in hash */
80 typedef struct mon_entry mon_entry
;
82 /* Structure entry for record (rec_table) and recovery (recov_q) tables */
84 char *name
; /* name of host */
85 int count
; /* count of entries */
86 struct name_entry
*prev
; /* Prev ptr to prev entry in hash */
87 struct name_entry
*nxt
; /* Next ptr to next entry in hash */
89 typedef struct name_entry name_entry
;
91 /* Structure for passing arguments into thread send_notice */
92 typedef struct moninfo
{
93 mon id
; /* Monitor information */
94 int state
; /* Current state */
97 /* Structure entry for hash tables */
98 typedef struct sm_hash
{
100 struct mon_entry
*mon_hdptr
; /* Head ptr for mon_table */
101 name_entry
*rec_hdptr
; /* Head ptr for rec_table */
102 name_entry
*recov_hdptr
; /* Head ptr for recov_q */
104 mutex_t lock
; /* Lock to protect each list head */
107 #define sm_monhdp smhd_t.mon_hdptr
108 #define sm_rechdp smhd_t.rec_hdptr
109 #define sm_recovhdp smhd_t.recov_hdptr
111 /* Structure entry for address list in name-to-address entry */
112 typedef struct addr_entry
{
113 struct addr_entry
*next
;
118 /* Structure entry for name-to-address translation table */
119 typedef struct name_addr_entry
{
120 struct name_addr_entry
*next
;
122 struct addr_entry
*addresses
;
125 /* Hash tables for each of the in-cache information */
126 extern sm_hash_t mon_table
[MAX_HASHSIZE
];
128 /* Global variables */
129 extern mutex_t crash_lock
; /* lock for die and crash variables */
130 extern int die
; /* Flag to indicate that an SM_CRASH */
131 /* request came in & to stop threads cleanly */
132 extern int in_crash
; /* Flag to single thread sm_crash requests. */
133 extern int regfiles_only
; /* Flag to indicate symlink use in statmon */
134 extern cond_t crash_finish
; /* Condition to wait until crash is finished */
135 extern mutex_t sm_trylock
; /* Lock to single thread sm_try */
137 * The only established lock precedence here is:
139 * thr_rwlock > name_addrlock
141 extern mutex_t name_addrlock
; /* Locks all entries of name-to-addr table */
142 extern rwlock_t thr_rwlock
; /* Reader/writer lock for requests coming in */
143 extern cond_t retrywait
; /* Condition to wait before starting retry */
145 extern char STATE
[MAXPATHLEN
], CURRENT
[MAXPATHLEN
];
146 extern char BACKUP
[MAXPATHLEN
];
147 extern int LOCAL_STATE
;
150 * Hash functions for monitor and record hash tables.
151 * Functions are hashed based on first 2 letters and last 2 letters of name.
152 * If only 1 letter in name, then, hash only on 1 letter.
154 #define SMHASH(name, key) { \
157 if ((l = strlen(name)) != 1) \
158 key |= ((*(name+(l-1)) << 24) | (*(name+1) << 16) | \
159 (*(name+(l-2)) << 8)); \
160 key = key % MAX_HASHSIZE; \
163 extern int debug
; /* Prints out debug information if set. */
165 extern char hostname
[MAXHOSTNAMELEN
];
168 * These variables will be used to store all the
169 * alias names for the host, as well as the -a
170 * command line hostnames.
172 extern char **host_name
; /* store -a opts */
173 extern int host_name_count
;
174 extern int addrix
; /* # of -a entries */
177 * The following 2 variables are meaningful
178 * only under a HA configuration.
180 extern char **path_name
; /* store -p opts */
181 extern int pathix
; /* # of -p entries */
183 /* Function prototypes used in program */
184 extern int create_file(char *name
);
185 extern void delete_file(char *name
);
186 extern void record_name(char *name
, int op
);
187 extern void sm_crash(void);
188 extern void statd_init();
189 extern void merge_hosts(void);
190 extern void merge_ips(void);
191 extern CLIENT
*create_client(char *, int, int, char *, struct timeval
*);
192 extern char *xmalloc(unsigned);
195 * RPC service functions, slightly different here than the
196 * generated ones in sm_inter.h
198 extern void nsmaddrproc1_reg(reg1args
*, reg1res
*);
199 extern void sm_stat_svc(sm_name
*namep
, sm_stat_res
*resp
);
200 extern void sm_mon_svc(mon
*monp
, sm_stat_res
*resp
);
201 extern void sm_unmon_svc(mon_id
*monidp
, sm_stat
*resp
);
202 extern void sm_unmon_all_svc(my_id
*myidp
, sm_stat
*resp
);
203 extern void sm_simu_crash_svc(void *myidp
);
204 extern void sm_notify_svc(stat_chge
*ntfp
);
206 extern void sm_inithash();
207 extern void copydir_from_to(char *from_dir
, char *to_dir
);
208 extern int str_cmp_unqual_hostname(char *, char *);
209 extern void record_addr(char *name
, sa_family_t family
, struct netobj
*ah
);
210 extern int is_symlink(char *file
);
211 extern int create_symlink(char *todir
, char *rname
, char *lname
);
212 extern int str_cmp_address_specifier(char *specifier1
, char *specifier2
);
218 #endif /* _SM_STATD_H */