aboutsummaryrefslogtreecommitdiffstats
path: root/utils/db1-ast/recno/rec_close.c
diff options
context:
space:
mode:
Diffstat (limited to 'utils/db1-ast/recno/rec_close.c')
-rw-r--r--utils/db1-ast/recno/rec_close.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/utils/db1-ast/recno/rec_close.c b/utils/db1-ast/recno/rec_close.c
new file mode 100644
index 0000000..20b00f5
--- /dev/null
+++ b/utils/db1-ast/recno/rec_close.c
@@ -0,0 +1,183 @@
+/*-
+ * 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>
+#include <sys/uio.h>
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "../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 ((size_t) 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 = &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 ((size_t) 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);
+}