Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.

This bring huge amount of changes, I'll enumerate only user-visible changes:

- Delegated Administration

	Allows regular users to perform ZFS operations, like file system
	creation, snapshot creation, etc.

- L2ARC

	Level 2 cache for ZFS - allows to use additional disks for cache.
	Huge performance improvements mostly for random read of mostly
	static content.

- slog

	Allow to use additional disks for ZFS Intent Log to speed up
	operations like fsync(2).

- vfs.zfs.super_owner

	Allows regular users to perform privileged operations on files stored
	on ZFS file systems owned by him. Very careful with this one.

- chflags(2)

	Not all the flags are supported. This still needs work.

- ZFSBoot

	Support to boot off of ZFS pool. Not finished, AFAIK.

	Submitted by:	dfr

- Snapshot properties

- New failure modes

	Before if write requested failed, system paniced. Now one
	can select from one of three failure modes:
	- panic - panic on write error
	- wait - wait for disk to reappear
	- continue - serve read requests if possible, block write requests

- Refquota, refreservation properties

	Just quota and reservation properties, but don't count space consumed
	by children file systems, clones and snapshots.

- Sparse volumes

	ZVOLs that don't reserve space in the pool.

- External attributes

	Compatible with extattr(2).

- NFSv4-ACLs

	Not sure about the status, might not be complete yet.

	Submitted by:	trasz

- Creation-time properties

- Regression tests for zpool(8) command.

Obtained from:	OpenSolaris

1 files changed, 81 insertions, 0 deletions

diff --git a/sys/cddl/contrib/opensolaris/common/zfs/zfs_deleg.h b/sys/cddl/contrib/opensolaris/common/zfs/zfs_deleg.h
new file mode 100644
index 0000000..561b73e
--- /dev/null
+++ b/sys/cddl/contrib/opensolaris/common/zfs/zfs_deleg.h
@@ -0,0 +1,81 @@
+/*
+ * 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 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef	_ZFS_DELEG_H
+#define	_ZFS_DELEG_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/fs/zfs.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define	ZFS_DELEG_SET_NAME_CHR		'@'		/* set name lead char */
+#define	ZFS_DELEG_FIELD_SEP_CHR		'$'		/* field separator */
+
+/*
+ * Max name length for a delegation attribute
+ */
+#define	ZFS_MAX_DELEG_NAME	128
+
+#define	ZFS_DELEG_LOCAL		'l'
+#define	ZFS_DELEG_DESCENDENT	'd'
+#define	ZFS_DELEG_NA		'-'
+
+typedef enum {
+	ZFS_DELEG_NOTE_CREATE,
+	ZFS_DELEG_NOTE_DESTROY,
+	ZFS_DELEG_NOTE_SNAPSHOT,
+	ZFS_DELEG_NOTE_ROLLBACK,
+	ZFS_DELEG_NOTE_CLONE,
+	ZFS_DELEG_NOTE_PROMOTE,
+	ZFS_DELEG_NOTE_RENAME,
+	ZFS_DELEG_NOTE_RECEIVE,
+	ZFS_DELEG_NOTE_ALLOW,
+	ZFS_DELEG_NOTE_USERPROP,
+	ZFS_DELEG_NOTE_MOUNT,
+	ZFS_DELEG_NOTE_SHARE,
+	ZFS_DELEG_NOTE_NONE
+} zfs_deleg_note_t;
+
+typedef struct zfs_deleg_perm_tab {
+	char *z_perm;
+	zfs_deleg_note_t z_note;
+} zfs_deleg_perm_tab_t;
+
+extern zfs_deleg_perm_tab_t zfs_deleg_perm_tab[];
+
+int zfs_deleg_verify_nvlist(nvlist_t *nvlist);
+void zfs_deleg_whokey(char *attr, zfs_deleg_who_type_t type,
+    char checkflag, void *data);
+const char *zfs_deleg_canonicalize_perm(const char *perm);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _ZFS_DELEG_H */