1/*-
2 * See the file LICENSE for redistribution information.
3 *
4 * Copyright (c) 1997, 1998
5 *	Sleepycat Software.  All rights reserved.
6 */
7
8#include "config.h"
9
10#ifndef lint
11static const char sccsid[] = "@(#)os_config.c	10.30 (Sleepycat) 10/12/98";
12#endif /* not lint */
13
14#ifndef NO_SYSTEM_INCLUDES
15#include <sys/types.h>
16
17#include <errno.h>
18#endif
19
20#include "db_int.h"
21#include "os_jump.h"
22
23struct __db_jumptab __db_jump;
24
25DB_GLOBALS __db_global_values = {
26	1,				/* DB_MUTEXLOCKS */
27	0,				/* DB_PAGEYIELD */
28	0,				/* DB_REGION_ANON, DB_REGION_NAME */
29	0,				/* DB_REGION_INIT */
30	0,				/* DB_TSL_SPINS */
31        {NULL, &__db_global_values.db_envq.tqh_first},  /* Environemnt queue */
32	{NULL, &__db_global_values.db_nameq.tqh_first}	/* Name queue */
33};
34
35/*
36 * db_jump_set --
37 *	Replace functions for the DB package.
38 */
39int
40db_jump_set(func, which)
41	void *func;
42	int which;
43{
44	switch (which) {
45	case DB_FUNC_CLOSE:
46		__db_jump.j_close = (int (*) __P((int)))func;
47		break;
48	case DB_FUNC_DIRFREE:
49		__db_jump.j_dirfree = (void (*) __P((char **, int)))func;
50		break;
51	case DB_FUNC_DIRLIST:
52		__db_jump.j_dirlist =
53		    (int (*) __P((const char *, char ***, int *)))func;
54		break;
55	case DB_FUNC_EXISTS:
56		__db_jump.j_exists = (int (*) __P((const char *, int *)))func;
57		break;
58	case DB_FUNC_FREE:
59		__db_jump.j_free = (void (*) __P((void *)))func;
60		break;
61	case DB_FUNC_FSYNC:
62		__db_jump.j_fsync = (int (*) __P((int)))func;
63		break;
64	case DB_FUNC_IOINFO:
65		__db_jump.j_ioinfo = (int (*) __P((const char *,
66		    int, u_int32_t *, u_int32_t *, u_int32_t *)))func;
67		break;
68	case DB_FUNC_MALLOC:
69		__db_jump.j_malloc = (void *(*) __P((size_t)))func;
70		break;
71	case DB_FUNC_MAP:
72		__db_jump.j_map = (int (*)
73		    __P((char *, int, size_t, int, int, int, void **)))func;
74		break;
75	case DB_FUNC_OPEN:
76		__db_jump.j_open = (int (*) __P((const char *, int, ...)))func;
77		break;
78	case DB_FUNC_READ:
79		__db_jump.j_read =
80		    (ssize_t (*) __P((int, void *, size_t)))func;
81		break;
82	case DB_FUNC_REALLOC:
83		__db_jump.j_realloc = (void *(*) __P((void *, size_t)))func;
84		break;
85	case DB_FUNC_RUNLINK:
86		__db_jump.j_runlink = (int (*) __P((char *)))func;
87		break;
88	case DB_FUNC_SEEK:
89		__db_jump.j_seek = (int (*)
90		    __P((int, size_t, db_pgno_t, u_int32_t, int, int)))func;
91		break;
92	case DB_FUNC_SLEEP:
93		__db_jump.j_sleep = (int (*) __P((u_long, u_long)))func;
94		break;
95	case DB_FUNC_UNLINK:
96		__db_jump.j_unlink = (int (*) __P((const char *)))func;
97		break;
98	case DB_FUNC_UNMAP:
99		__db_jump.j_unmap = (int (*) __P((void *, size_t)))func;
100		break;
101	case DB_FUNC_WRITE:
102		__db_jump.j_write =
103		    (ssize_t (*) __P((int, const void *, size_t)))func;
104		break;
105	case DB_FUNC_YIELD:
106		__db_jump.j_yield = (int (*) __P((void)))func;
107		break;
108	default:
109		return (EINVAL);
110	}
111	return (0);
112}
113
114/*
115 * db_value_set --
116 *	Replace values for the DB package.
117 */
118int
119db_value_set(value, which)
120	int value, which;
121{
122	int ret;
123
124	switch (which) {
125	case DB_MUTEXLOCKS:
126		DB_GLOBAL(db_mutexlocks) = value;
127		break;
128	case DB_PAGEYIELD:
129		DB_GLOBAL(db_pageyield) = value;
130		break;
131	case DB_REGION_ANON:
132		if (value != 0 && (ret = __db_mapanon_ok(0)) != 0)
133			return (ret);
134		DB_GLOBAL(db_region_anon) = value;
135		break;
136	case DB_REGION_INIT:
137		DB_GLOBAL(db_region_init) = value;
138		break;
139	case DB_REGION_NAME:
140		if (value != 0 && (ret = __db_mapanon_ok(1)) != 0)
141			return (ret);
142		DB_GLOBAL(db_region_anon) = value;
143		break;
144	case DB_TSL_SPINS:
145		if (value <= 0)
146			return (EINVAL);
147		DB_GLOBAL(db_tsl_spins) = value;
148		break;
149	default:
150		return (EINVAL);
151	}
152	return (0);
153}
154