2 * Copyright (c) 1990, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 #if defined(LIBC_SCCS) && !defined(lint)
31 static char sccsid[] = "@(#)rec_utils.c 8.6 (Berkeley) 7/16/94";
32 #endif /* LIBC_SCCS and not lint */
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
51 * e: key/data pair to be returned
53 * key: user's key structure
54 * data: user's data structure
57 * RET_SUCCESS, RET_ERROR.
60 __rec_ret(BTREE *t, EPG *e, recno_t nrec, DBT *key, DBT *data)
68 /* We have to copy the key, it's not on the page. */
69 if (sizeof(recno_t) > t->bt_rkey.size) {
70 p = realloc(t->bt_rkey.data, sizeof(recno_t));
74 t->bt_rkey.size = sizeof(recno_t);
76 memmove(t->bt_rkey.data, &nrec, sizeof(recno_t));
77 key->size = sizeof(recno_t);
78 key->data = t->bt_rkey.data;
85 * We must copy big keys/data to make them contigous. Otherwise,
86 * leave the page pinned and don't copy unless the user specified
89 rl = GETRLEAF(e->page, e->index);
90 if (rl->flags & P_BIGDATA) {
91 if (__ovfl_get(t, rl->bytes,
92 &data->size, &t->bt_rdata.data, &t->bt_rdata.size))
94 data->data = t->bt_rdata.data;
95 } else if (F_ISSET(t, B_DB_LOCK)) {
96 /* Use +1 in case the first record retrieved is 0 length. */
97 if (rl->dsize + 1 > t->bt_rdata.size) {
98 p = realloc(t->bt_rdata.data, rl->dsize + 1);
101 t->bt_rdata.data = p;
102 t->bt_rdata.size = rl->dsize + 1;
104 memmove(t->bt_rdata.data, rl->bytes, rl->dsize);
105 data->size = rl->dsize;
106 data->data = t->bt_rdata.data;
108 data->size = rl->dsize;
109 data->data = rl->bytes;
111 return (RET_SUCCESS);