1 /*
2 * CDDL HEADER START
3 *
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
7 * with the License.
8 *
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.
13 *
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]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 #ifndef _SM_STATD_H
41 #define _SM_STATD_H
42
43 #pragma ident "%Z%%M% %I% %E% SMI"
44
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48
49 /* Limit defines */
50 #define SM_DIRECTORY_MODE 00755
51 #define MAX_HASHSIZE 50
52 #define SM_RPC_TIMEOUT 15
53 #define PERCENT_MINJOIN 10
54 #define MAX_FDS 256
55 #define MAX_THR 25
56 #define INC_DELAYTIME 30
57 #define MAX_DELAYTIME 300
58 #define SM_CLTS_TIMEOUT 15
59 /* max strlen of /statmon/state, /statmon/sm.bak, /statmon/sm */
60 #define SM_MAXPATHLEN 17
61 /* Increment size for realloc of array host_name */
62 #define HOST_NAME_INCR 5
63
64 /* supported address family names in /var/statmon symlinks */
65 #define SM_ADDR_IPV4 "ipv4"
66 #define SM_ADDR_IPV6 "ipv6"
67
68 /* Supported for readdir_r() */
69 #define MAXDIRENT (sizeof (struct dirent) + _POSIX_PATH_MAX + 1)
70
71 /* Structure entry for monitor table (mon_table) */
72 struct mon_entry {
73 mon id; /* mon information: mon_name, my_id */
74 struct mon_entry *prev; /* Prev ptr to prev entry in hash */
75 struct mon_entry *nxt; /* Next ptr to next entry in hash */
76 };
77 typedef struct mon_entry mon_entry;
78
79 /* Structure entry for record (rec_table) and recovery (recov_q) tables */
80 struct name_entry {
81 char *name; /* name of host */
82 int count; /* count of entries */
83 struct name_entry *prev; /* Prev ptr to prev entry in hash */
84 struct name_entry *nxt; /* Next ptr to next entry in hash */
85 };
86 typedef struct name_entry name_entry;
87
88 /* Structure for passing arguments into thread send_notice */
89 typedef struct moninfo {
90 mon id; /* Monitor information */
91 int state; /* Current state */
92 } moninfo_t;
93
94 /* Structure entry for hash tables */
95 typedef struct sm_hash {
96 union {
97 struct mon_entry *mon_hdptr; /* Head ptr for mon_table */
98 name_entry *rec_hdptr; /* Head ptr for rec_table */
99 name_entry *recov_hdptr; /* Head ptr for recov_q */
100 } smhd_t;
101 mutex_t lock; /* Lock to protect each list head */
102 } sm_hash_t;
103
104 #define sm_monhdp smhd_t.mon_hdptr
105 #define sm_rechdp smhd_t.rec_hdptr
106 #define sm_recovhdp smhd_t.recov_hdptr
107
108 /* Structure entry for address list in name-to-address entry */
109 typedef struct addr_entry {
110 struct addr_entry *next;
111 struct netobj ah;
112 sa_family_t family;
113 } addr_entry_t;
114
115 /* Structure entry for name-to-address translation table */
116 typedef struct name_addr_entry {
117 struct name_addr_entry *next;
118 char *name;
119 struct addr_entry *addresses;
120 } name_addr_entry_t;
121
122 /* Hash tables for each of the in-cache information */
123 extern sm_hash_t mon_table[MAX_HASHSIZE];
124
125 /* Global variables */
126 extern mutex_t crash_lock; /* lock for die and crash variables */
127 extern int die; /* Flag to indicate that an SM_CRASH */
128 /* request came in & to stop threads cleanly */
129 extern int in_crash; /* Flag to single thread sm_crash requests. */
130 extern int regfiles_only; /* Flag to indicate symlink use in statmon */
131 extern cond_t crash_finish; /* Condition to wait until crash is finished */
132 extern mutex_t sm_trylock; /* Lock to single thread sm_try */
133 /*
134 * The only established lock precedence here is:
135 *
136 * thr_rwlock > name_addrlock
137 */
138 extern mutex_t name_addrlock; /* Locks all entries of name-to-addr table */
139 extern rwlock_t thr_rwlock; /* Reader/writer lock for requests coming in */
140 extern cond_t retrywait; /* Condition to wait before starting retry */
141
142 extern char STATE[MAXPATHLEN], CURRENT[MAXPATHLEN];
143 extern char BACKUP[MAXPATHLEN];
144 extern int LOCAL_STATE;
145
146 /*
147 * Hash functions for monitor and record hash tables.
148 * Functions are hashed based on first 2 letters and last 2 letters of name.
149 * If only 1 letter in name, then, hash only on 1 letter.
150 */
151 #define SMHASH(name, key) { \
152 int l; \
153 key = *name; \
154 if ((l = strlen(name)) != 1) \
155 key |= ((*(name+(l-1)) << 24) | (*(name+1) << 16) | \
156 (*(name+(l-2)) << 8)); \
157 key = key % MAX_HASHSIZE; \
158 }
159
160 extern int debug; /* Prints out debug information if set. */
161
162 extern char hostname[MAXHOSTNAMELEN];
163
164 /*
165 * These variables will be used to store all the
166 * alias names for the host, as well as the -a
167 * command line hostnames.
168 */
169 extern char **host_name; /* store -a opts */
170 extern int host_name_count;
171 extern int addrix; /* # of -a entries */
172
173 /*
174 * The following 2 variables are meaningful
175 * only under a HA configuration.
176 */
177 extern char **path_name; /* store -p opts */
178 extern int pathix; /* # of -p entries */
179
180 /* Function prototypes used in program */
181 extern int create_file(char *name);
182 extern void delete_file(char *name);
183 extern void record_name(char *name, int op);
184 extern void sm_crash(void);
185 extern void sm_notify(stat_chge *ntfp);
186 extern void statd_init();
187 extern void merge_hosts(void);
188 extern CLIENT *create_client(char *, int, int, struct timeval *);
189 extern char *xmalloc(unsigned);
190 extern void sm_status(sm_name *namep, sm_stat_res *resp);
191 extern void sm_mon(mon *monp, sm_stat_res *resp);
192 extern void sm_unmon(mon_id *monidp, sm_stat *resp);
193 extern void sm_unmon_all(my_id *myidp, sm_stat *resp);
194 extern void sm_simu_crash(void *myidp);
195 extern void sm_inithash();
196 extern void copydir_from_to(char *from_dir, char *to_dir);
197 extern int str_cmp_unqual_hostname(char *, char *);
198 extern void nsmaddrproc1_reg(reg1args *, reg1res *);
199 extern void record_addr(char *name, sa_family_t family, struct netobj *ah);
200 extern int is_symlink(char *file);
201 extern int create_symlink(char *todir, char *rname, char *lname);
202 extern int str_cmp_address_specifier(char *specifier1, char *specifier2);
203
204 #ifdef __cplusplus
205 }
206 #endif
207
208 #endif /* _SM_STATD_H */