diff options
Diffstat (limited to 'src/spdk/lib/blob/blob_bs_dev.c')
| -rw-r--r-- | src/spdk/lib/blob/blob_bs_dev.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/spdk/lib/blob/blob_bs_dev.c b/src/spdk/lib/blob/blob_bs_dev.c new file mode 100644 index 000000000..8705a1c16 --- /dev/null +++ b/src/spdk/lib/blob/blob_bs_dev.c @@ -0,0 +1,150 @@ +/*- + * 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; +} |