text: /*-
   * 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/types.h>
  #ifndef KERIO_WIN32
  #include <sys/uio.h>
  #include <sys/mman.h>
  #endif
  
  #include <errno.h>
  #include <limits.h>
  #include <stdio.h>
  #include <unistd.h>
  
  #include <db.h>
  #include "recno.h"
  #include "compat.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;
  #ifdef HAS_MMAP
  	if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
  		status = RET_ERROR;
  #endif
  	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;
  {
  #ifdef HAS_WRITEV
  	struct iovec iov[2];
  #endif
  	int l1;
  
  	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 {
  #ifdef HAS_WRITEV
  		iov[1].iov_base = &t->bt_bval;
  		iov[1].iov_len = 1;
  #endif
  		status = (dbp->seq)(dbp, &key, &data, R_FIRST);
  		while (status == RET_SUCCESS) {
  #ifndef HAS_WRITEV
  		  l1 = write(t->bt_rfd, data.data, data.size);
  		  if (l1 >= 0) l1 += write(t->bt_rfd, &t->bt_bval, 1);
  #else
  			iov[0].iov_base = data.data;
  			iov[0].iov_len = data.size;
  			l1 = writev(t->bt_rfd, iov, 2);
  #endif
  			if (l1 != 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);
  }
  