bdev: Add rpc interface for rbd.

include $(SPDK_ROOT_DIR)/mk/spdk.common.mk

CFLAGS += -I$(SPDK_ROOT_DIR)/lib/bdev/

C_SRCS = blockdev_rbd.c

C_SRCS = blockdev_rbd.c blockdev_rbd_rpc.c

LIBNAME = bdev_rbd

include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

/*-

 *   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 "blockdev_rbd.h"

#include "spdk/log.h"

#include "spdk/rpc.h"

struct rpc_construct_rbd {

	char *pool_name;

	char *rbd_name;

	int32_t size;

};

static void

free_rpc_construct_rbd(struct rpc_construct_rbd *req)

{

	free(req->pool_name);

	free(req->rbd_name);

}

static const struct spdk_json_object_decoder rpc_construct_rbd_decoders[] = {

	{"pool_name", offsetof(struct rpc_construct_rbd, pool_name), spdk_json_decode_string},

	{"rbd_name", offsetof(struct rpc_construct_rbd, rbd_name), spdk_json_decode_string},

	{"size", offsetof(struct rpc_construct_rbd, size), spdk_json_decode_int32},

};

static void

spdk_rpc_construct_rbd_bdev(struct spdk_jsonrpc_server_conn *conn,

			    const struct spdk_json_val *params,

			    const struct spdk_json_val *id)

{

	struct rpc_construct_rbd req = {};

	struct spdk_json_write_ctx *w;

	if (spdk_json_decode_object(params, rpc_construct_rbd_decoders,

				    sizeof(rpc_construct_rbd_decoders) / sizeof(*rpc_construct_rbd_decoders),

				    &req)) {

		SPDK_TRACELOG(SPDK_TRACE_DEBUG, "spdk_json_decode_object failed\n");

		goto invalid;

	}

	if (spdk_bdev_rbd_create(req.pool_name, req.rbd_name, req.size)) {

		goto invalid;

	}

	free_rpc_construct_rbd(&req);

	if (id == NULL) {

		return;

	}

	w = spdk_jsonrpc_begin_result(conn, id);

	spdk_json_write_bool(w, true);

	spdk_jsonrpc_end_result(conn, w);

	return;

invalid:

	spdk_jsonrpc_send_error_response(conn, id, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");

	free_rpc_construct_rbd(&req);

}

SPDK_RPC_REGISTER("construct_rbd_bdev", spdk_rpc_construct_rbd_bdev)