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Makefile.inc
(244 B)
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bt_close.c
(4.31 KB)
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bt_conv.c
(5.09 KB)
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bt_debug.c
(8.18 KB)
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bt_delete.c
(15.79 KB)
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bt_get.c
(3.01 KB)
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bt_open.c
(11.08 KB)
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bt_overflow.c
(5.58 KB)
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bt_page.c
(2.78 KB)
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bt_put.c
(8.35 KB)
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bt_search.c
(5.51 KB)
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bt_seq.c
(11.08 KB)
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bt_split.c
(21.57 KB)
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bt_utils.c
(6.32 KB)
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btree.h
(14.05 KB)
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extern.h
(2.88 KB)
Editing: bt_get.c
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1990, 1993, 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Mike Olson. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)bt_get.c 8.6 (Berkeley) 7/20/94"; #endif /* LIBC_SCCS and not lint */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/types.h> #include <errno.h> #include <stddef.h> #include <stdio.h> #include <db.h> #include "btree.h" /* * __BT_GET -- Get a record from the btree. * * Parameters: * dbp: pointer to access method * key: key to find * data: data to return * flag: currently unused * * Returns: * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found. */ int __bt_get(const DB *dbp, const DBT *key, DBT *data, u_int flags) { BTREE *t; EPG *e; int exact, status; t = dbp->internal; /* Toss any page pinned across calls. */ if (t->bt_pinned != NULL) { mpool_put(t->bt_mp, t->bt_pinned, 0); t->bt_pinned = NULL; } /* Get currently doesn't take any flags. */ if (flags) { errno = EINVAL; return (RET_ERROR); } if ((e = __bt_search(t, key, &exact)) == NULL) return (RET_ERROR); if (!exact) { mpool_put(t->bt_mp, e->page, 0); return (RET_SPECIAL); } status = __bt_ret(t, e, NULL, NULL, data, &t->bt_rdata, 0); /* * If the user is doing concurrent access, we copied the * key/data, toss the page. */ if (F_ISSET(t, B_DB_LOCK)) mpool_put(t->bt_mp, e->page, 0); else t->bt_pinned = e->page; return (status); }
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