git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@578 65c4cc65-6c06-0410-ace0-fbb531ad65f3
184 lines
4.9 KiB
C
Executable file
184 lines
4.9 KiB
C
Executable file
/*-
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* Copyright (c) 1990, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)rec_close.c 8.6 (Berkeley) 8/18/94";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <db.h>
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#include "recno.h"
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/*
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* __REC_CLOSE -- Close a recno tree.
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*
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* Parameters:
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* dbp: pointer to access method
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*
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* Returns:
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* RET_ERROR, RET_SUCCESS
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*/
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int
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__rec_close(dbp)
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DB *dbp;
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{
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BTREE *t;
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int status;
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t = dbp->internal;
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/* Toss any page pinned across calls. */
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if (t->bt_pinned != NULL) {
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mpool_put(t->bt_mp, t->bt_pinned, 0);
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t->bt_pinned = NULL;
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}
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if (__rec_sync(dbp, 0) == RET_ERROR)
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return (RET_ERROR);
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/* Committed to closing. */
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status = RET_SUCCESS;
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if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
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status = RET_ERROR;
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if (!F_ISSET(t, R_INMEM)) {
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if (F_ISSET(t, R_CLOSEFP)) {
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if (fclose(t->bt_rfp))
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status = RET_ERROR;
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} else
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if (close(t->bt_rfd))
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status = RET_ERROR;
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}
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if (__bt_close(dbp) == RET_ERROR)
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status = RET_ERROR;
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return (status);
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}
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/*
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* __REC_SYNC -- sync the recno tree to disk.
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*
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* Parameters:
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* dbp: pointer to access method
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*
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* Returns:
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* RET_SUCCESS, RET_ERROR.
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*/
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int
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__rec_sync(dbp, flags)
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const DB *dbp;
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u_int flags;
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{
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struct iovec iov[2];
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BTREE *t;
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DBT data, key;
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off_t off;
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recno_t scursor, trec;
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int status;
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t = dbp->internal;
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/* Toss any page pinned across calls. */
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if (t->bt_pinned != NULL) {
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mpool_put(t->bt_mp, t->bt_pinned, 0);
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t->bt_pinned = NULL;
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}
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if (flags == R_RECNOSYNC)
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return (__bt_sync(dbp, 0));
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if (F_ISSET(t, R_RDONLY | R_INMEM) || !F_ISSET(t, R_MODIFIED))
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return (RET_SUCCESS);
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/* Read any remaining records into the tree. */
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if (!F_ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
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return (RET_ERROR);
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/* Rewind the file descriptor. */
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if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0)
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return (RET_ERROR);
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/* Save the cursor. */
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scursor = t->bt_cursor.rcursor;
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key.size = sizeof(recno_t);
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key.data = &trec;
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if (F_ISSET(t, R_FIXLEN)) {
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/*
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* We assume that fixed length records are all fixed length.
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* Any that aren't are either EINVAL'd or corrected by the
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* record put code.
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*/
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status = (dbp->seq)(dbp, &key, &data, R_FIRST);
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while (status == RET_SUCCESS) {
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if ((size_t) write(t->bt_rfd, data.data, data.size) != data.size)
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return (RET_ERROR);
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status = (dbp->seq)(dbp, &key, &data, R_NEXT);
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}
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} else {
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iov[1].iov_base = &t->bt_bval;
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iov[1].iov_len = 1;
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status = (dbp->seq)(dbp, &key, &data, R_FIRST);
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while (status == RET_SUCCESS) {
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iov[0].iov_base = data.data;
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iov[0].iov_len = data.size;
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if ((size_t) writev(t->bt_rfd, iov, 2) != data.size + 1)
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return (RET_ERROR);
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status = (dbp->seq)(dbp, &key, &data, R_NEXT);
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}
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}
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/* Restore the cursor. */
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t->bt_cursor.rcursor = scursor;
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if (status == RET_ERROR)
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return (RET_ERROR);
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if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1)
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return (RET_ERROR);
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if (ftruncate(t->bt_rfd, off))
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return (RET_ERROR);
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F_CLR(t, R_MODIFIED);
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return (RET_SUCCESS);
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}
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