2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1990, 1993, 1994
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8 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
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13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
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19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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32 #if defined(LIBC_SCCS) && !defined(lint)
33 static char sccsid[] = "@(#)rec_utils.c 8.6 (Berkeley) 7/16/94";
34 #endif /* LIBC_SCCS and not lint */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
53 * e: key/data pair to be returned
55 * key: user's key structure
56 * data: user's data structure
59 * RET_SUCCESS, RET_ERROR.
62 __rec_ret(BTREE *t, EPG *e, recno_t nrec, DBT *key, DBT *data)
70 /* We have to copy the key, it's not on the page. */
71 if (sizeof(recno_t) > t->bt_rkey.size) {
72 p = realloc(t->bt_rkey.data, sizeof(recno_t));
76 t->bt_rkey.size = sizeof(recno_t);
78 memmove(t->bt_rkey.data, &nrec, sizeof(recno_t));
79 key->size = sizeof(recno_t);
80 key->data = t->bt_rkey.data;
87 * We must copy big keys/data to make them contigous. Otherwise,
88 * leave the page pinned and don't copy unless the user specified
91 rl = GETRLEAF(e->page, e->index);
92 if (rl->flags & P_BIGDATA) {
93 if (__ovfl_get(t, rl->bytes,
94 &data->size, &t->bt_rdata.data, &t->bt_rdata.size))
96 data->data = t->bt_rdata.data;
97 } else if (F_ISSET(t, B_DB_LOCK)) {
98 /* Use +1 in case the first record retrieved is 0 length. */
99 if (rl->dsize + 1 > t->bt_rdata.size) {
100 p = realloc(t->bt_rdata.data, rl->dsize + 1);
103 t->bt_rdata.data = p;
104 t->bt_rdata.size = rl->dsize + 1;
106 memmove(t->bt_rdata.data, rl->bytes, rl->dsize);
107 data->size = rl->dsize;
108 data->data = t->bt_rdata.data;
110 data->size = rl->dsize;
111 data->data = rl->bytes;
113 return (RET_SUCCESS);