3ce759a1d5
Add module blobfs_bdev as a general module to simplify the operations of blobfs on bdev. Then its functions can be utilized by other libraries or apps. blobfs_detect can be used to detect whether there is one blobfs on given bdev. Change-Id: Ib425574816061dc945fb652b539f791a44097a43 Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/466486 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/blobfs.h"
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#include "spdk/bdev.h"
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#include "spdk/event.h"
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#include "spdk/blob_bdev.h"
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#include "spdk/blobfs_bdev.h"
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#include "spdk/log.h"
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#include "spdk/string.h"
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#include "spdk/rpc.h"
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#include "spdk/util.h"
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#include "spdk_internal/log.h"
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struct rpc_blobfs_detect {
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char *bdev_name;
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struct spdk_jsonrpc_request *request;
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};
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static void
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free_rpc_blobfs_detect(struct rpc_blobfs_detect *req)
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{
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free(req->bdev_name);
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free(req);
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}
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static const struct spdk_json_object_decoder rpc_blobfs_detect_decoders[] = {
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{"bdev_name", offsetof(struct rpc_blobfs_detect, bdev_name), spdk_json_decode_string},
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};
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static void
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_rpc_blobfs_detect_done(void *cb_arg, int fserrno)
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{
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struct rpc_blobfs_detect *req = cb_arg;
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struct spdk_json_write_ctx *w;
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bool existed = true;
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if (fserrno == -EILSEQ) {
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/* There is no blobfs existing on bdev */
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existed = false;
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} else if (fserrno != 0) {
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spdk_jsonrpc_send_error_response(req->request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
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spdk_strerror(-fserrno));
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return;
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}
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w = spdk_jsonrpc_begin_result(req->request);
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spdk_json_write_bool(w, existed);
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spdk_jsonrpc_end_result(req->request, w);
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free_rpc_blobfs_detect(req);
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}
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static void
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spdk_rpc_blobfs_detect(struct spdk_jsonrpc_request *request,
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const struct spdk_json_val *params)
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{
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struct rpc_blobfs_detect *req;
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req = calloc(1, sizeof(*req));
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if (req == NULL) {
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SPDK_ERRLOG("could not allocate rpc_blobfs_detect request.\n");
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spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, "Out of memory");
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return;
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}
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if (spdk_json_decode_object(params, rpc_blobfs_detect_decoders,
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SPDK_COUNTOF(rpc_blobfs_detect_decoders),
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req)) {
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SPDK_ERRLOG("spdk_json_decode_object failed\n");
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spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
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"spdk_json_decode_object failed");
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free_rpc_blobfs_detect(req);
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return;
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}
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req->request = request;
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spdk_blobfs_bdev_detect(req->bdev_name, _rpc_blobfs_detect_done, req);
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}
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SPDK_RPC_REGISTER("blobfs_detect", spdk_rpc_blobfs_detect, SPDK_RPC_RUNTIME)
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