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This change incorporates three major pieces: The first change is a keystore that manages wrapping and encryption keys for encrypted datasets. These commands mostly involve manipulating the new DSL Crypto Key ZAP Objects that live in the MOS. Each encrypted dataset has its own DSL Crypto Key that is protected with a user's key. This level of indirection allows users to change their keys without re-encrypting their entire datasets. The change implements the new subcommands "zfs load-key", "zfs unload-key" and "zfs change-key" which allow the user to manage their encryption keys and settings. In addition, several new flags and properties have been added to allow dataset creation and to make mounting and unmounting more convenient. The second piece of this patch provides the ability to encrypt, decyrpt, and authenticate protected datasets. Each object set maintains a Merkel tree of Message Authentication Codes that protect the lower layers, similarly to how checksums are maintained. This part impacts the zio layer, which handles the actual encryption and generation of MACs, as well as the ARC and DMU, which need to be able to handle encrypted buffers and protected data. The last addition is the ability to do raw, encrypted sends and receives. The idea here is to send raw encrypted and compressed data and receive it exactly as is on a backup system. This means that the dataset on the receiving system is protected using the same user key that is in use on the sending side. By doing so, datasets can be efficiently backed up to an untrusted system without fear of data being compromised. Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Signed-off-by: Tom Caputi <tcaputi@datto.com> Closes #494 Closes #5769
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#include_next <sys/mount.h>
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#ifndef _LIBSPL_SYS_MOUNT_H
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#define _LIBSPL_SYS_MOUNT_H
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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/*
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* Some old glibc headers don't define BLKGETSIZE64
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* and we don't want to require the kernel headers
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*/
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#if !defined(BLKGETSIZE64)
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#define BLKGETSIZE64 _IOR(0x12, 114, size_t)
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#endif
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/*
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* Some old glibc headers don't correctly define MS_DIRSYNC and
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* instead use the enum name S_WRITE. When using these older
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* headers define MS_DIRSYNC to be S_WRITE.
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*/
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#if !defined(MS_DIRSYNC)
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#define MS_DIRSYNC S_WRITE
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#endif
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/*
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* Some old glibc headers don't correctly define MS_POSIXACL and
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* instead leave it undefined. When using these older headers define
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* MS_POSIXACL to the reserved value of (1<<16).
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*/
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#if !defined(MS_POSIXACL)
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#define MS_POSIXACL (1<<16)
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#endif
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#define MS_USERS (MS_NOEXEC|MS_NOSUID|MS_NODEV)
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#define MS_OWNER (MS_NOSUID|MS_NODEV)
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#define MS_GROUP (MS_NOSUID|MS_NODEV)
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#define MS_COMMENT 0
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/*
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* Older glibc <sys/mount.h> headers did not define all the available
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* umount2(2) flags. Both MNT_FORCE and MNT_DETACH are supported in the
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* kernel back to 2.4.11 so we define them correctly if they are missing.
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*/
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#ifdef MNT_FORCE
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#define MS_FORCE MNT_FORCE
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#else
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#define MS_FORCE 0x00000001
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#endif /* MNT_FORCE */
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#ifdef MNT_DETACH
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#define MS_DETACH MNT_DETACH
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#else
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#define MS_DETACH 0x00000002
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#endif /* MNT_DETACH */
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/*
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* Overlay mount is default in Linux, but for solaris/zfs
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* compatibility, MS_OVERLAY is defined to explicitly have the user
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* provide a flag (-O) to mount over a non empty directory.
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*/
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#define MS_OVERLAY 0x00000004
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/*
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* MS_CRYPT indicates that encryption keys should be loaded if they are not
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* already available. This is not defined in glibc, but it is never seen by
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* the kernel so it will not cause any problems.
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*/
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#define MS_CRYPT 0x00000008
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#endif /* _LIBSPL_SYS_MOUNT_H */
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