GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/db/btree/bt_get.c Lines: 0 18 0.0 %
Date: 2017-11-13 Branches: 0 10 0.0 %

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/*	$OpenBSD: bt_get.c,v 1.8 2005/08/05 13:02:59 espie Exp $	*/
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/*-
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 * Copyright (c) 1990, 1993, 1994
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Mike Olson.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <errno.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <db.h>
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#include "btree.h"
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/*
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 * __BT_GET -- Get a record from the btree.
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 *
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 * Parameters:
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 *	dbp:	pointer to access method
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 *	key:	key to find
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 *	data:	data to return
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 *	flag:	currently unused
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 *
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 * Returns:
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 *	RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
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 */
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int
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__bt_get(const DB *dbp, const DBT *key, DBT *data, u_int flags)
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{
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	BTREE *t;
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	EPG *e;
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	int exact, status;
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	t = dbp->internal;
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	/* Toss any page pinned across calls. */
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	if (t->bt_pinned != NULL) {
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		mpool_put(t->bt_mp, t->bt_pinned, 0);
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		t->bt_pinned = NULL;
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	}
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	/* Get currently doesn't take any flags. */
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	if (flags) {
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		errno = EINVAL;
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		return (RET_ERROR);
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	}
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	if ((e = __bt_search(t, key, &exact)) == NULL)
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		return (RET_ERROR);
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	if (!exact) {
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		mpool_put(t->bt_mp, e->page, 0);
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		return (RET_SPECIAL);
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	}
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	status = __bt_ret(t, e, NULL, NULL, data, &t->bt_rdata, 0);
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	/*
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	 * If the user is doing concurrent access, we copied the
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	 * key/data, toss the page.
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	 */
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	if (F_ISSET(t, B_DB_LOCK))
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		mpool_put(t->bt_mp, e->page, 0);
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	else
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		t->bt_pinned = e->page;
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	return (status);
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}