int
bplist_space(bplist_t *bpl, uint64_t *usedp, uint64_t *compp, uint64_t *uncompp)
{
uint64_t itor = 0, comp = 0, uncomp = 0;
int err;
blkptr_t bp;
mutex_enter(&bpl->bpl_lock);
err = bplist_hold(bpl);
if (err) {
mutex_exit(&bpl->bpl_lock);
return (err);
}
*usedp = bpl->bpl_phys->bpl_bytes;
if (bpl->bpl_havecomp) {
*compp = bpl->bpl_phys->bpl_comp;
*uncompp = bpl->bpl_phys->bpl_uncomp;
}
mutex_exit(&bpl->bpl_lock);
if (!bpl->bpl_havecomp) {
while ((err = bplist_iterate(bpl, &itor, &bp)) == 0) {
comp += BP_GET_PSIZE(&bp);
uncomp += BP_GET_UCSIZE(&bp);
}
if (err == ENOENT)
err = 0;
*compp = comp;
*uncompp = uncomp;
}
return (err);
}
int
bplist_enqueue(bplist_t *bpl, const blkptr_t *bp, dmu_tx_t *tx)
{
uint64_t blk, off;
blkptr_t *bparray;
int err;
ASSERT(!BP_IS_HOLE(bp));
mutex_enter(&bpl->bpl_lock);
err = bplist_hold(bpl);
if (err)
return (err);
blk = bpl->bpl_phys->bpl_entries >> bpl->bpl_bpshift;
off = P2PHASE(bpl->bpl_phys->bpl_entries, 1ULL << bpl->bpl_bpshift);
err = bplist_cache(bpl, blk);
if (err) {
mutex_exit(&bpl->bpl_lock);
return (err);
}
dmu_buf_will_dirty(bpl->bpl_cached_dbuf, tx);
bparray = bpl->bpl_cached_dbuf->db_data;
bparray[off] = *bp;
/* We never need the fill count. */
bparray[off].blk_fill = 0;
/* The bplist will compress better if we can leave off the checksum */
if (!BP_GET_DEDUP(&bparray[off]))
bzero(&bparray[off].blk_cksum, sizeof (bparray[off].blk_cksum));
dmu_buf_will_dirty(bpl->bpl_dbuf, tx);
bpl->bpl_phys->bpl_entries++;
bpl->bpl_phys->bpl_bytes +=
bp_get_dsize_sync(dmu_objset_spa(bpl->bpl_mos), bp);
if (bpl->bpl_havecomp) {
bpl->bpl_phys->bpl_comp += BP_GET_PSIZE(bp);
bpl->bpl_phys->bpl_uncomp += BP_GET_UCSIZE(bp);
}
mutex_exit(&bpl->bpl_lock);
return (0);
}
static int
dump_data(dmu_sendarg_t *dsp, dmu_object_type_t type,
uint64_t object, uint64_t offset, int blksz, const blkptr_t *bp, void *data)
{
struct drr_write *drrw = &(dsp->dsa_drr->drr_u.drr_write);
/*
* If there is any kind of pending aggregation (currently either
* a grouping of free objects or free blocks), push it out to
* the stream, since aggregation can't be done across operations
* of different types.
*/
if (dsp->dsa_pending_op != PENDING_NONE) {
if (dump_bytes(dsp, dsp->dsa_drr,
sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
dsp->dsa_pending_op = PENDING_NONE;
}
/* write a DATA record */
bzero(dsp->dsa_drr, sizeof (dmu_replay_record_t));
dsp->dsa_drr->drr_type = DRR_WRITE;
drrw->drr_object = object;
drrw->drr_type = type;
drrw->drr_offset = offset;
drrw->drr_length = blksz;
drrw->drr_toguid = dsp->dsa_toguid;
drrw->drr_checksumtype = BP_GET_CHECKSUM(bp);
if (zio_checksum_table[drrw->drr_checksumtype].ci_dedup)
drrw->drr_checksumflags |= DRR_CHECKSUM_DEDUP;
DDK_SET_LSIZE(&drrw->drr_key, BP_GET_LSIZE(bp));
DDK_SET_PSIZE(&drrw->drr_key, BP_GET_PSIZE(bp));
DDK_SET_COMPRESS(&drrw->drr_key, BP_GET_COMPRESS(bp));
drrw->drr_key.ddk_cksum = bp->blk_cksum;
if (dump_bytes(dsp, dsp->dsa_drr, sizeof (dmu_replay_record_t)) != 0)
return (EINTR);
if (dump_bytes(dsp, data, blksz) != 0)
return (EINTR);
return (0);
}
int
zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
{
blkptr_t *bp = zio->io_bp;
uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum :
(BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp)));
int error;
uint64_t size = (bp == NULL ? zio->io_size :
(BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
uint64_t offset = zio->io_offset;
abd_t *data = zio->io_abd;
spa_t *spa = zio->io_spa;
error = zio_checksum_error_impl(spa, bp, checksum, data, size,
offset, info);
if (error != 0 && zio_injection_enabled && !zio->io_error &&
(error = zio_handle_fault_injection(zio, ECKSUM)) != 0) {
info->zbc_injected = 1;
return (error);
}
return (error);
}
static int
process_old_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
{
struct process_old_arg *poa = arg;
dsl_pool_t *dp = poa->ds->ds_dir->dd_pool;
ASSERT(!BP_IS_HOLE(bp));
if (bp->blk_birth <= dsl_dataset_phys(poa->ds)->ds_prev_snap_txg) {
dsl_deadlist_insert(&poa->ds->ds_deadlist, bp, tx);
if (poa->ds_prev && !poa->after_branch_point &&
bp->blk_birth >
dsl_dataset_phys(poa->ds_prev)->ds_prev_snap_txg) {
dsl_dataset_phys(poa->ds_prev)->ds_unique_bytes +=
bp_get_dsize_sync(dp->dp_spa, bp);
}
} else {
poa->used += bp_get_dsize_sync(dp->dp_spa, bp);
poa->comp += BP_GET_PSIZE(bp);
poa->uncomp += BP_GET_UCSIZE(bp);
dsl_free_sync(poa->pio, dp, tx->tx_txg, bp);
}
return (0);
}
int
zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
{
blkptr_t *bp = zio->io_bp;
uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum :
(BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp)));
int byteswap;
int error;
uint64_t size = (bp == NULL ? zio->io_size :
(BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
uint64_t offset = zio->io_offset;
void *data = zio->io_data;
zio_checksum_info_t *ci = &zio_checksum_table[checksum];
zio_cksum_t actual_cksum, expected_cksum, verifier;
if (checksum >= ZIO_CHECKSUM_FUNCTIONS || ci->ci_func[0] == NULL)
return (EINVAL);
if (ci->ci_eck) {
zio_eck_t *eck;
if (checksum == ZIO_CHECKSUM_ZILOG2) {
zil_chain_t *zilc = data;
uint64_t nused;
eck = &zilc->zc_eck;
if (eck->zec_magic == ZEC_MAGIC)
nused = zilc->zc_nused;
else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC))
nused = BSWAP_64(zilc->zc_nused);
else
return (ECKSUM);
if (nused > size)
return (ECKSUM);
size = P2ROUNDUP_TYPED(nused, ZIL_MIN_BLKSZ, uint64_t);
} else {
eck = (zio_eck_t *)((char *)data + size) - 1;
}
if (checksum == ZIO_CHECKSUM_GANG_HEADER)
zio_checksum_gang_verifier(&verifier, bp);
else if (checksum == ZIO_CHECKSUM_LABEL)
zio_checksum_label_verifier(&verifier, offset);
else
verifier = bp->blk_cksum;
byteswap = (eck->zec_magic == BSWAP_64(ZEC_MAGIC));
if (byteswap)
byteswap_uint64_array(&verifier, sizeof (zio_cksum_t));
expected_cksum = eck->zec_cksum;
eck->zec_cksum = verifier;
ci->ci_func[byteswap](data, size, &actual_cksum);
eck->zec_cksum = expected_cksum;
if (byteswap)
byteswap_uint64_array(&expected_cksum,
sizeof (zio_cksum_t));
} else {
ASSERT(!BP_IS_GANG(bp));
byteswap = BP_SHOULD_BYTESWAP(bp);
expected_cksum = bp->blk_cksum;
ci->ci_func[byteswap](data, size, &actual_cksum);
}
info->zbc_expected = expected_cksum;
info->zbc_actual = actual_cksum;
info->zbc_checksum_name = ci->ci_name;
info->zbc_byteswapped = byteswap;
info->zbc_injected = 0;
info->zbc_has_cksum = 1;
if (!ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum)) {
return (ECKSUM);
}
if (zio_injection_enabled && !zio->io_error &&
(error = zio_handle_fault_injection(zio, ECKSUM)) != 0) {
info->zbc_injected = 1;
return (error);
}
return (0);
}
int
zio_checksum_error(zio_t *zio, zio_bad_cksum_t *info)
{
blkptr_t *bp = zio->io_bp;
uint_t checksum = (bp == NULL ? zio->io_prop.zp_checksum :
(BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER : BP_GET_CHECKSUM(bp)));
int byteswap;
int error;
uint64_t size = (bp == NULL ? zio->io_size :
(BP_IS_GANG(bp) ? SPA_GANGBLOCKSIZE : BP_GET_PSIZE(bp)));
uint64_t offset = zio->io_offset;
void *data = zio->io_data;
zio_checksum_info_t *ci = &zio_checksum_table[checksum];
zio_cksum_t actual_cksum, expected_cksum, verifier;
if (checksum >= ZIO_CHECKSUM_FUNCTIONS || ci->ci_func[0] == NULL)
return (SET_ERROR(EINVAL));
if (ci->ci_eck) {
zio_eck_t *eck;
if (checksum == ZIO_CHECKSUM_ZILOG2) {
zil_chain_t *zilc = data;
uint64_t nused;
eck = &zilc->zc_eck;
if (eck->zec_magic == ZEC_MAGIC)
nused = zilc->zc_nused;
else if (eck->zec_magic == BSWAP_64(ZEC_MAGIC))
nused = BSWAP_64(zilc->zc_nused);
else
return (SET_ERROR(ECKSUM));
if (nused > size)
return (SET_ERROR(ECKSUM));
size = P2ROUNDUP_TYPED(nused, ZIL_MIN_BLKSZ, uint64_t);
} else {
eck = (zio_eck_t *)((char *)data + size) - 1;
}
if (checksum == ZIO_CHECKSUM_GANG_HEADER)
zio_checksum_gang_verifier(&verifier, bp);
else if (checksum == ZIO_CHECKSUM_LABEL)
zio_checksum_label_verifier(&verifier, offset);
else
verifier = bp->blk_cksum;
byteswap = (eck->zec_magic == BSWAP_64(ZEC_MAGIC));
if (byteswap)
byteswap_uint64_array(&verifier, sizeof (zio_cksum_t));
expected_cksum = eck->zec_cksum;
eck->zec_cksum = verifier;
ci->ci_func[byteswap](data, size, &actual_cksum);
eck->zec_cksum = expected_cksum;
if (byteswap)
byteswap_uint64_array(&expected_cksum,
sizeof (zio_cksum_t));
} else {
ASSERT(!BP_IS_GANG(bp));
byteswap = BP_SHOULD_BYTESWAP(bp);
expected_cksum = bp->blk_cksum;
ci->ci_func[byteswap](data, size, &actual_cksum);
}
info->zbc_expected = expected_cksum;
info->zbc_actual = actual_cksum;
info->zbc_checksum_name = ci->ci_name;
info->zbc_byteswapped = byteswap;
info->zbc_injected = 0;
info->zbc_has_cksum = 1;
/*
* Special case for truncated checksums with crypto MAC
* This may not be the best place to deal with this but it is here now.
*
* Words 0 and 1 and 32 bits of word 2 of the checksum are the
* first 160 bytes of SHA256 hash.
* The rest of words 2 and all of word 3 are the crypto MAC so
* ignore those because we can't check them until we do the decryption
* later, nor could we do them if the key wasn't present
*/
if (ci->ci_trunc) {
if (!(0 == (
(actual_cksum.zc_word[0] - expected_cksum.zc_word[0]) |
(actual_cksum.zc_word[1] - expected_cksum.zc_word[1]) |
(BF64_GET(actual_cksum.zc_word[2], 0, 32) -
BF64_GET(expected_cksum.zc_word[2], 0, 32))))) {
return (ECKSUM);
}
} else if (!ZIO_CHECKSUM_EQUAL(actual_cksum, expected_cksum)) {
return (SET_ERROR(ECKSUM));
}
if (zio_injection_enabled && !zio->io_error &&
(error = zio_handle_fault_injection(zio, ECKSUM)) != 0) {
info->zbc_injected = 1;
return (error);
}
return (0);
}
