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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_close.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/types.h>
- #include <sys/uio.h>
- #ifndef macintosh
- #include <sys/mman.h>
- #endif
-
- #include <errno.h>
- #include <limits.h>
- #include <stdio.h>
- #ifndef macintosh
- #include <unistd.h>
- #endif
-
- #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 rval;
-
- 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. */
- rval = RET_SUCCESS;
- #ifndef macintosh
- if (ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
- rval = RET_ERROR;
- #endif
-
- if (!ISSET(t, R_INMEM))
- if (ISSET(t, R_CLOSEFP)) {
- if (fclose(t->bt_rfp))
- rval = RET_ERROR;
- } else
- if (close(t->bt_rfd))
- rval = RET_ERROR;
-
- if (__bt_close(dbp) == RET_ERROR)
- rval = RET_ERROR;
-
- return (rval);
- }
-
- /*
- * __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 (ISSET(t, R_RDONLY | R_INMEM) || !ISSET(t, R_MODIFIED))
- return (RET_SUCCESS);
-
- /* Read any remaining records into the tree. */
- if (!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);
-
- iov[1].iov_base = "\n";
- iov[1].iov_len = 1;
- scursor = t->bt_rcursor;
-
- key.size = sizeof(recno_t);
- key.data = &trec;
-
- 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);
- }
- t->bt_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);
- CLR(t, R_MODIFIED);
- return (RET_SUCCESS);
- }
-