b525630342
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
79 lines
2.6 KiB
C
79 lines
2.6 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 (the "License").
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* You may not use this file except in compliance 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_DMU_TRAVERSE_H
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#define _SYS_DMU_TRAVERSE_H
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#include <sys/zfs_context.h>
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#include <sys/spa.h>
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#include <sys/zio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct dnode_phys;
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struct dsl_dataset;
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struct zilog;
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struct arc_buf;
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typedef int (blkptr_cb_t)(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
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const zbookmark_phys_t *zb, const struct dnode_phys *dnp, void *arg);
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#define TRAVERSE_PRE (1<<0)
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#define TRAVERSE_POST (1<<1)
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#define TRAVERSE_PREFETCH_METADATA (1<<2)
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#define TRAVERSE_PREFETCH_DATA (1<<3)
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#define TRAVERSE_PREFETCH (TRAVERSE_PREFETCH_METADATA | TRAVERSE_PREFETCH_DATA)
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#define TRAVERSE_HARD (1<<4)
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/*
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* Encrypted dnode blocks have encrypted bonus buffers while the rest
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* of the dnode is left unencrypted. Callers can specify the
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* TRAVERSE_NO_DECRYPT flag to indicate to the traversal code that
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* they wish to receive the raw encrypted dnodes instead of attempting
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* to read the logical data.
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*/
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#define TRAVERSE_NO_DECRYPT (1<<5)
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/* Special traverse error return value to indicate skipping of children */
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#define TRAVERSE_VISIT_NO_CHILDREN -1
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int traverse_dataset(struct dsl_dataset *ds,
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uint64_t txg_start, int flags, blkptr_cb_t func, void *arg);
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int traverse_dataset_resume(struct dsl_dataset *ds, uint64_t txg_start,
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zbookmark_phys_t *resume, int flags, blkptr_cb_t func, void *arg);
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int traverse_dataset_destroyed(spa_t *spa, blkptr_t *blkptr,
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uint64_t txg_start, zbookmark_phys_t *resume, int flags,
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blkptr_cb_t func, void *arg);
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int traverse_pool(spa_t *spa,
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uint64_t txg_start, int flags, blkptr_cb_t func, void *arg);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_DMU_TRAVERSE_H */
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