+++ /dev/null
-/*-
- * Copyright (c) 1990, 1993, 1994
- * 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_close.c 8.6 (Berkeley) 8/18/94";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/db/recno/rec_close.c,v 1.7 2003/02/16 17:29:09 nectar Exp $");
-
-#include "namespace.h"
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/mman.h>
-
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include <unistd.h>
-#include "un-namespace.h"
-
-#include <db.h>
-#include "recno.h"
-
-/*
- * __REC_CLOSE -- Close a recno tree.
- *
- * Parameters:
- * dbp: pointer to access method
- *
- * Returns:
- * RET_ERROR, RET_SUCCESS
- */
-int
-__rec_close(dbp)
- DB *dbp;
-{
- BTREE *t;
- int 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;
- }
-
- if (__rec_sync(dbp, 0) == RET_ERROR)
- return (RET_ERROR);
-
- /* Committed to closing. */
- status = RET_SUCCESS;
- if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
- status = RET_ERROR;
-
- if (!F_ISSET(t, R_INMEM)) {
- if (F_ISSET(t, R_CLOSEFP)) {
- if (fclose(t->bt_rfp))
- status = RET_ERROR;
- } else
- if (_close(t->bt_rfd))
- status = RET_ERROR;
- }
-
- if (__bt_close(dbp) == RET_ERROR)
- status = RET_ERROR;
-
- return (status);
-}
-
-/*
- * __REC_SYNC -- sync the recno tree to disk.
- *
- * Parameters:
- * dbp: pointer to access method
- *
- * Returns:
- * RET_SUCCESS, RET_ERROR.
- */
-int
-__rec_sync(dbp, flags)
- const DB *dbp;
- u_int flags;
-{
- struct iovec iov[2];
- BTREE *t;
- DBT data, key;
- off_t off;
- recno_t scursor, trec;
- int 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;
- }
-
- if (flags == R_RECNOSYNC)
- return (__bt_sync(dbp, 0));
-
- if (F_ISSET(t, R_RDONLY | R_INMEM) || !F_ISSET(t, R_MODIFIED))
- return (RET_SUCCESS);
-
- /* Read any remaining records into the tree. */
- if (!F_ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
- return (RET_ERROR);
-
- /* Rewind the file descriptor. */
- if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0)
- return (RET_ERROR);
-
- /* Save the cursor. */
- scursor = t->bt_cursor.rcursor;
-
- key.size = sizeof(recno_t);
- key.data = &trec;
-
- if (F_ISSET(t, R_FIXLEN)) {
- /*
- * We assume that fixed length records are all fixed length.
- * Any that aren't are either EINVAL'd or corrected by the
- * record put code.
- */
- status = (dbp->seq)(dbp, &key, &data, R_FIRST);
- while (status == RET_SUCCESS) {
- if (_write(t->bt_rfd, data.data, data.size) !=
- data.size)
- return (RET_ERROR);
- status = (dbp->seq)(dbp, &key, &data, R_NEXT);
- }
- } else {
- iov[1].iov_base = (char *)&t->bt_bval;
- iov[1].iov_len = 1;
-
- status = (dbp->seq)(dbp, &key, &data, R_FIRST);
- while (status == RET_SUCCESS) {
- iov[0].iov_base = data.data;
- iov[0].iov_len = data.size;
- if (_writev(t->bt_rfd, iov, 2) != data.size + 1)
- return (RET_ERROR);
- status = (dbp->seq)(dbp, &key, &data, R_NEXT);
- }
- }
-
- /* Restore the cursor. */
- t->bt_cursor.rcursor = scursor;
-
- if (status == RET_ERROR)
- return (RET_ERROR);
- if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1)
- return (RET_ERROR);
- if (ftruncate(t->bt_rfd, off))
- return (RET_ERROR);
- F_CLR(t, R_MODIFIED);
- return (RET_SUCCESS);
-}
projects / apple / libc.git / blobdiff