Update core ZFS code from build 121 to build 141.

2026-05-26 12:12:13 +03:00 · 2010-05-28 13:45:14 -07:00
parent 6119cb885a
commit 428870ff73
174 changed files with 35763 additions and 14592 deletions
@@ -0,0 +1,157 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include <sys/zfs_context.h>
+#include <sys/spa.h>
+#include <sys/zio.h>
+#include <sys/ddt.h>
+#include <sys/zap.h>
+#include <sys/dmu_tx.h>
+#include <util/sscanf.h>
+
+int ddt_zap_leaf_blockshift = 12;
+int ddt_zap_indirect_blockshift = 12;
+
+static int
+ddt_zap_create(objset_t *os, uint64_t *objectp, dmu_tx_t *tx, boolean_t prehash)
+{
+	zap_flags_t flags = ZAP_FLAG_HASH64 | ZAP_FLAG_UINT64_KEY;
+
+	if (prehash)
+		flags |= ZAP_FLAG_PRE_HASHED_KEY;
+
+	*objectp = zap_create_flags(os, 0, flags, DMU_OT_DDT_ZAP,
+	    ddt_zap_leaf_blockshift, ddt_zap_indirect_blockshift,
+	    DMU_OT_NONE, 0, tx);
+
+	return (*objectp == 0 ? ENOTSUP : 0);
+}
+
+static int
+ddt_zap_destroy(objset_t *os, uint64_t object, dmu_tx_t *tx)
+{
+	return (zap_destroy(os, object, tx));
+}
+
+static int
+ddt_zap_lookup(objset_t *os, uint64_t object, ddt_entry_t *dde)
+{
+	uchar_t cbuf[sizeof (dde->dde_phys) + 1];
+	uint64_t one, csize;
+	int error;
+
+	error = zap_length_uint64(os, object, (uint64_t *)&dde->dde_key,
+	    DDT_KEY_WORDS, &one, &csize);
+	if (error)
+		return (error);
+
+	ASSERT(one == 1);
+	ASSERT(csize <= sizeof (cbuf));
+
+	error = zap_lookup_uint64(os, object, (uint64_t *)&dde->dde_key,
+	    DDT_KEY_WORDS, 1, csize, cbuf);
+	if (error)
+		return (error);
+
+	ddt_decompress(cbuf, dde->dde_phys, csize, sizeof (dde->dde_phys));
+
+	return (0);
+}
+
+static void
+ddt_zap_prefetch(objset_t *os, uint64_t object, ddt_entry_t *dde)
+{
+	(void) zap_prefetch_uint64(os, object, (uint64_t *)&dde->dde_key,
+	    DDT_KEY_WORDS);
+}
+
+static int
+ddt_zap_update(objset_t *os, uint64_t object, ddt_entry_t *dde, dmu_tx_t *tx)
+{
+	uchar_t cbuf[sizeof (dde->dde_phys) + 1];
+	uint64_t csize;
+
+	csize = ddt_compress(dde->dde_phys, cbuf,
+	    sizeof (dde->dde_phys), sizeof (cbuf));
+
+	return (zap_update_uint64(os, object, (uint64_t *)&dde->dde_key,
+	    DDT_KEY_WORDS, 1, csize, cbuf, tx));
+}
+
+static int
+ddt_zap_remove(objset_t *os, uint64_t object, ddt_entry_t *dde, dmu_tx_t *tx)
+{
+	return (zap_remove_uint64(os, object, (uint64_t *)&dde->dde_key,
+	    DDT_KEY_WORDS, tx));
+}
+
+static int
+ddt_zap_walk(objset_t *os, uint64_t object, ddt_entry_t *dde, uint64_t *walk)
+{
+	zap_cursor_t zc;
+	zap_attribute_t za;
+	int error;
+
+	zap_cursor_init_serialized(&zc, os, object, *walk);
+	if ((error = zap_cursor_retrieve(&zc, &za)) == 0) {
+		uchar_t cbuf[sizeof (dde->dde_phys) + 1];
+		uint64_t csize = za.za_num_integers;
+		ASSERT(za.za_integer_length == 1);
+		error = zap_lookup_uint64(os, object, (uint64_t *)za.za_name,
+		    DDT_KEY_WORDS, 1, csize, cbuf);
+		ASSERT(error == 0);
+		if (error == 0) {
+			ddt_decompress(cbuf, dde->dde_phys, csize,
+			    sizeof (dde->dde_phys));
+			dde->dde_key = *(ddt_key_t *)za.za_name;
+		}
+		zap_cursor_advance(&zc);
+		*walk = zap_cursor_serialize(&zc);
+	}
+	zap_cursor_fini(&zc);
+	return (error);
+}
+
+static uint64_t
+ddt_zap_count(objset_t *os, uint64_t object)
+{
+	uint64_t count = 0;
+
+	VERIFY(zap_count(os, object, &count) == 0);
+
+	return (count);
+}
+
+const ddt_ops_t ddt_zap_ops = {
+	"zap",
+	ddt_zap_create,
+	ddt_zap_destroy,
+	ddt_zap_lookup,
+	ddt_zap_prefetch,
+	ddt_zap_update,
+	ddt_zap_remove,
+	ddt_zap_walk,
+	ddt_zap_count,
+};