path: root/db2/common/db_appinit.c

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1996, 1997, 1998
 *	Sleepycat Software.  All rights reserved.
 */

#include "config.h"

#ifndef lint
static const char sccsid[] = "@(#)db_appinit.c	10.66 (Sleepycat) 12/7/98";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>

#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#endif

#include "db_int.h"
#include "shqueue.h"
#include "db_page.h"
#include "btree.h"
#include "hash.h"
#include "log.h"
#include "txn.h"
#include "clib_ext.h"
#include "common_ext.h"

static int __db_home __P((DB_ENV *, const char *, u_int32_t));
static int __db_parse __P((DB_ENV *, char *));
static int __db_tmp_open __P((DB_ENV *, u_int32_t, char *, int *));

/*
 * This conflict array is used for concurrent db access (cdb).  It
 * uses the same locks as the db_rw_conflict array, but adds an IW
 * mode to be used for write cursors.
 */
static u_int8_t const db_cdb_conflicts[] = {
	/*		N   R   W  IW */
	/*    N */	0,  0,  0,  0,
	/*    R */	0,  0,  1,  0,
	/*    W */	0,  1,  1,  1,
	/*   IW */	0,  0,  1,  1
};

/*
 * db_version --
 *	Return version information.
 */
char *
db_version(majverp, minverp, patchp)
	int *majverp, *minverp, *patchp;
{
	if (majverp != NULL)
		*majverp = DB_VERSION_MAJOR;
	if (minverp != NULL)
		*minverp = DB_VERSION_MINOR;
	if (patchp != NULL)
		*patchp = DB_VERSION_PATCH;
	return ((char *)DB_VERSION_STRING);
}

/*
 * db_appinit --
 *	Initialize the application environment.
 */
int
db_appinit(db_home, db_config, dbenv, flags)
	const char *db_home;
	char * const *db_config;
	DB_ENV *dbenv;
	u_int32_t flags;
{
	FILE *fp;
	int mode, ret;
	char * const *p;
	char *lp, buf[MAXPATHLEN * 2];

	fp = NULL;

	/* Validate arguments. */
	if (dbenv == NULL)
		return (EINVAL);

#ifdef HAVE_SPINLOCKS
#define	OKFLAGS								\
    (DB_CREATE | DB_INIT_CDB | DB_INIT_LOCK | DB_INIT_LOG |		\
    DB_INIT_MPOOL | DB_INIT_TXN | DB_MPOOL_PRIVATE | DB_NOMMAP |	\
    DB_RECOVER | DB_RECOVER_FATAL | DB_THREAD | DB_TXN_NOSYNC |		\
    DB_USE_ENVIRON | DB_USE_ENVIRON_ROOT)
#else
#define	OKFLAGS								\