d1d7e2689d
The vast majority of these changes are in Linux specific code. They are the result of not having an automated style checker to validate the code when it was originally written. Others were caused when the common code was slightly adjusted for Linux. This patch contains no functional changes. It only refreshes the code to conform to style guide. Everyone submitting patches for inclusion upstream should now run 'make checkstyle' and resolve any warning prior to opening a pull request. The automated builders have been updated to fail a build if when 'make checkstyle' detects an issue. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1821
158 lines
4.0 KiB
C
158 lines
4.0 KiB
C
/*
|
|
* 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;
|
|
uint64_t one, csize;
|
|
int error;
|
|
|
|
cbuf = kmem_alloc(sizeof (dde->dde_phys) + 1, KM_PUSHPAGE);
|
|
|
|
error = zap_length_uint64(os, object, (uint64_t *)&dde->dde_key,
|
|
DDT_KEY_WORDS, &one, &csize);
|
|
if (error)
|
|
goto out;
|
|
|
|
ASSERT(one == 1);
|
|
ASSERT(csize <= (sizeof (dde->dde_phys) + 1));
|
|
|
|
error = zap_lookup_uint64(os, object, (uint64_t *)&dde->dde_key,
|
|
DDT_KEY_WORDS, 1, csize, cbuf);
|
|
if (error)
|
|
goto out;
|
|
|
|
ddt_decompress(cbuf, dde->dde_phys, csize, sizeof (dde->dde_phys));
|
|
out:
|
|
kmem_free(cbuf, sizeof (dde->dde_phys) + 1);
|
|
|
|
return (error);
|
|
}
|
|
|
|
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 int
|
|
ddt_zap_count(objset_t *os, uint64_t object, uint64_t *count)
|
|
{
|
|
return (zap_count(os, object, 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,
|
|
};
|