1 files changed, 121 insertions, 0 deletions
diff --git a/bdb/hash/hash_meta.c b/bdb/hash/hash_meta.c
new file mode 100644
index 00000000000..d96a6db3207
--- /dev/null
+++ b/bdb/hash/hash_meta.c
@@ -0,0 +1,121 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1999, 2000
+ *	Sleepycat Software.  All rights reserved.
+ */
+
+#include "db_config.h"
+
+#ifndef lint
+static const char revid[] = "$Id: hash_meta.c,v 11.10 2000/12/21 21:54:35 margo Exp $";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+#endif
+
+#include "db_int.h"
+#include "db_page.h"
+#include "hash.h"
+#include "db_shash.h"
+#include "lock.h"
+#include "txn.h"
+
+/*
+ * Acquire the meta-data page.
+ *
+ * PUBLIC: int __ham_get_meta __P((DBC *));
+ */
+int
+__ham_get_meta(dbc)
+	DBC *dbc;
+{
+	HASH_CURSOR *hcp;
+	HASH *hashp;
+	DB *dbp;
+	int ret;
+
+	hcp = (HASH_CURSOR *)dbc->internal;
+	dbp = dbc->dbp;
+	hashp = dbp->h_internal;
+
+	if (dbp->dbenv != NULL &&
+	    STD_LOCKING(dbc) && !F_ISSET(dbc, DBC_RECOVER)) {
+		dbc->lock.pgno = hashp->meta_pgno;
+		if ((ret = lock_get(dbp->dbenv, dbc->locker,
+		    DB_NONBLOCK(dbc) ? DB_LOCK_NOWAIT : 0,
+		    &dbc->lock_dbt, DB_LOCK_READ, &hcp->hlock)) != 0)
+			return (ret);
+	}
+
+	if ((ret = memp_fget(dbc->dbp->mpf,
+	    &hashp->meta_pgno, DB_MPOOL_CREATE, &(hcp->hdr))) != 0 &&
+	    hcp->hlock.off != LOCK_INVALID) {
+		(void)lock_put(dbc->dbp->dbenv, &hcp->hlock);
+		hcp->hlock.off = LOCK_INVALID;
+	}
+
+	return (ret);
+}
+
+/*
+ * Release the meta-data page.
+ *
+ * PUBLIC: int __ham_release_meta __P((DBC *));
+ */
+int
+__ham_release_meta(dbc)
+	DBC *dbc;
+{
+	HASH_CURSOR *hcp;
+
+	hcp = (HASH_CURSOR *)dbc->internal;
+
+	if (hcp->hdr)
+		(void)memp_fput(dbc->dbp->mpf, hcp->hdr,
+		    F_ISSET(hcp, H_DIRTY) ? DB_MPOOL_DIRTY : 0);
+	hcp->hdr = NULL;
+	if (!F_ISSET(dbc, DBC_RECOVER) &&
+	    dbc->txn == NULL && hcp->hlock.off != LOCK_INVALID)
+		(void)lock_put(dbc->dbp->dbenv, &hcp->hlock);
+	hcp->hlock.off = LOCK_INVALID;
+	F_CLR(hcp, H_DIRTY);
+
+	return (0);
+}
+
+/*
+ * Mark the meta-data page dirty.
+ *
+ * PUBLIC: int __ham_dirty_meta __P((DBC *));
+ */
+int
+__ham_dirty_meta(dbc)
+	DBC *dbc;
+{
+	DB *dbp;
+	DB_LOCK _tmp;
+	HASH *hashp;
+	HASH_CURSOR *hcp;
+	int ret;
+
+	dbp = dbc->dbp;
+	hashp = dbp->h_internal;
+	hcp = (HASH_CURSOR *)dbc->internal;
+
+	ret = 0;
+	if (STD_LOCKING(dbc) && !F_ISSET(dbc, DBC_RECOVER)) {
+		dbc->lock.pgno = hashp->meta_pgno;
+		if ((ret = lock_get(dbp->dbenv, dbc->locker,
+		    DB_NONBLOCK(dbc) ? DB_LOCK_NOWAIT : 0,
+		    &dbc->lock_dbt, DB_LOCK_WRITE, &_tmp)) == 0) {
+			ret = lock_put(dbp->dbenv, &hcp->hlock);
+			hcp->hlock = _tmp;
+		}
+	}
+
+	if (ret == 0)
+		F_SET(hcp, H_DIRTY);
+	return (ret);
+}