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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk/blob.h"
#include "spdk/log.h"
#include "blobstore.h"
static void
blob_bs_dev_write(struct spdk_bs_dev *dev, struct spdk_io_channel *channel, void *payload,
uint64_t lba, uint32_t lba_count,
struct spdk_bs_dev_cb_args *cb_args)
{
cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
assert(false);
}
static void
blob_bs_dev_writev(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
struct iovec *iov, int iovcnt,
uint64_t lba, uint32_t lba_count,
struct spdk_bs_dev_cb_args *cb_args)
{
cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
assert(false);
}
static void
blob_bs_dev_write_zeroes(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
uint64_t lba, uint32_t lba_count,
struct spdk_bs_dev_cb_args *cb_args)
{
cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
assert(false);
}
static void
blob_bs_dev_unmap(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
uint64_t lba, uint32_t lba_count,
struct spdk_bs_dev_cb_args *cb_args)
{
cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, -EPERM);
assert(false);
}
static void
blob_bs_dev_read_cpl(void *cb_arg, int bserrno)
{
struct spdk_bs_dev_cb_args *cb_args = (struct spdk_bs_dev_cb_args *)cb_arg;
cb_args->cb_fn(cb_args->channel, cb_args->cb_arg, bserrno);
}
static inline void
blob_bs_dev_read(struct spdk_bs_dev *dev, struct spdk_io_channel *channel, void *payload,
uint64_t lba, uint32_t lba_count, struct spdk_bs_dev_cb_args *cb_args)
{
struct spdk_blob_bs_dev *b = (struct spdk_blob_bs_dev *)dev;
spdk_blob_io_read(b->blob, channel, payload, lba, lba_count,
blob_bs_dev_read_cpl, cb_args);
}
static inline void
blob_bs_dev_readv(struct spdk_bs_dev *dev, struct spdk_io_channel *channel,
struct iovec *iov, int iovcnt,
uint64_t lba, uint32_t lba_count, struct spdk_bs_dev_cb_args *cb_args)
{
struct spdk_blob_bs_dev *b = (struct spdk_blob_bs_dev *)dev;
spdk_blob_io_readv(b->blob, channel, iov, iovcnt, lba, lba_count,
blob_bs_dev_read_cpl, cb_args);
}
static void
blob_bs_dev_destroy_cpl(void *cb_arg, int bserrno)
{
if (bserrno != 0) {
SPDK_ERRLOG("Error on blob_bs_dev destroy: %d", bserrno);
}
/* Free blob_bs_dev */
free(cb_arg);
}
static void
blob_bs_dev_destroy(struct spdk_bs_dev *bs_dev)
{
struct spdk_blob_bs_dev *b = (struct spdk_blob_bs_dev *)bs_dev;
spdk_blob_close(b->blob, blob_bs_dev_destroy_cpl, b);
}
struct spdk_bs_dev *
bs_create_blob_bs_dev(struct spdk_blob *blob)
{
struct spdk_blob_bs_dev *b;
b = calloc(1, sizeof(*b));
if (b == NULL) {
return NULL;
}
/* snapshot blob */
b->bs_dev.blockcnt = blob->active.num_clusters *
blob->bs->pages_per_cluster * bs_io_unit_per_page(blob->bs);
b->bs_dev.blocklen = spdk_bs_get_io_unit_size(blob->bs);
b->bs_dev.create_channel = NULL;
b->bs_dev.destroy_channel = NULL;
b->bs_dev.destroy = blob_bs_dev_destroy;
b->bs_dev.write = blob_bs_dev_write;
b->bs_dev.writev = blob_bs_dev_writev;
b->bs_dev.read = blob_bs_dev_read;
b->bs_dev.readv = blob_bs_dev_readv;
b->bs_dev.write_zeroes = blob_bs_dev_write_zeroes;
b->bs_dev.unmap = blob_bs_dev_unmap;
b->blob = blob;
return &b->bs_dev;
}
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