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-rw-r--r--src/spdk/lib/blob/blob_bs_dev.c150
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;
+}