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- /*-
- * Copyright (c) 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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[] = "@(#)rec_utils.c 8.2 (Berkeley) 9/7/93";
- #endif /* LIBC_SCCS and not lint */
-
- #if defined(macintosh) && (defined(powerc) || defined(__powerc))
- #include "OurMalloc.h"
- #endif
-
- #include <sys/param.h>
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- #include <db.h>
- #include "recno.h"
-
- /*
- * __REC_RET -- Build return data as a result of search or scan.
- *
- * Parameters:
- * t: tree
- * d: LEAF to be returned to the user.
- * data: user's data structure
- *
- * Returns:
- * RET_SUCCESS, RET_ERROR.
- */
- int
- __rec_ret(t, e, nrec, key, data)
- BTREE *t;
- EPG *e;
- recno_t nrec;
- DBT *key, *data;
- {
- register RLEAF *rl;
- register void *p;
-
- if (data == NULL)
- goto retkey;
-
- rl = GETRLEAF(e->page, e->index);
-
- /*
- * We always copy big data to make it contigous. Otherwise, we
- * leave the page pinned and don't copy unless the user specified
- * concurrent access.
- */
- if (rl->flags & P_BIGDATA) {
- if (__ovfl_get(t, rl->bytes,
- &data->size, &t->bt_dbuf, &t->bt_dbufsz))
- return (RET_ERROR);
- data->data = t->bt_dbuf;
- } else if (ISSET(t, B_DB_LOCK)) {
- /* Use +1 in case the first record retrieved is 0 length. */
- if (rl->dsize + 1 > t->bt_dbufsz) {
- if ((p = realloc(t->bt_dbuf, rl->dsize + 1)) == NULL)
- return (RET_ERROR);
- t->bt_dbuf = p;
- t->bt_dbufsz = rl->dsize + 1;
- }
- memmove(t->bt_dbuf, rl->bytes, rl->dsize);
- data->size = rl->dsize;
- data->data = t->bt_dbuf;
- } else {
- data->size = rl->dsize;
- data->data = rl->bytes;
- }
-
- retkey: if (key == NULL)
- return (RET_SUCCESS);
-
- /* We have to copy the key, it's not on the page. */
- if (sizeof(recno_t) > t->bt_kbufsz) {
- if ((p = realloc(t->bt_kbuf, sizeof(recno_t))) == NULL)
- return (RET_ERROR);
- t->bt_kbuf = p;
- t->bt_kbufsz = sizeof(recno_t);
- }
- memmove(t->bt_kbuf, &nrec, sizeof(recno_t));
- key->size = sizeof(recno_t);
- key->data = t->bt_kbuf;
- return (RET_SUCCESS);
- }
-