1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "vbdev_passthru.h" 35 #include "spdk/rpc.h" 36 #include "spdk/util.h" 37 #include "spdk/string.h" 38 #include "spdk_internal/log.h" 39 40 /* Structure to hold the parameters for this RPC method. */ 41 struct rpc_bdev_passthru_create { 42 char *base_bdev_name; 43 char *name; 44 }; 45 46 /* Free the allocated memory resource after the RPC handling. */ 47 static void 48 free_rpc_bdev_passthru_create(struct rpc_bdev_passthru_create *r) 49 { 50 free(r->base_bdev_name); 51 free(r->name); 52 } 53 54 /* Structure to decode the input parameters for this RPC method. */ 55 static const struct spdk_json_object_decoder rpc_bdev_passthru_create_decoders[] = { 56 {"base_bdev_name", offsetof(struct rpc_bdev_passthru_create, base_bdev_name), spdk_json_decode_string}, 57 {"name", offsetof(struct rpc_bdev_passthru_create, name), spdk_json_decode_string}, 58 }; 59 60 /* Decode the parameters for this RPC method and properly construct the passthru 61 * device. Error status returned in the failed cases. 62 */ 63 static void 64 spdk_rpc_bdev_passthru_create(struct spdk_jsonrpc_request *request, 65 const struct spdk_json_val *params) 66 { 67 struct rpc_bdev_passthru_create req = {NULL}; 68 struct spdk_json_write_ctx *w; 69 int rc; 70 71 if (spdk_json_decode_object(params, rpc_bdev_passthru_create_decoders, 72 SPDK_COUNTOF(rpc_bdev_passthru_create_decoders), 73 &req)) { 74 SPDK_DEBUGLOG(SPDK_LOG_VBDEV_PASSTHRU, "spdk_json_decode_object failed\n"); 75 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 76 "spdk_json_decode_object failed"); 77 goto cleanup; 78 } 79 80 rc = bdev_passthru_create_disk(req.base_bdev_name, req.name); 81 if (rc != 0) { 82 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc)); 83 goto cleanup; 84 } 85 86 w = spdk_jsonrpc_begin_result(request); 87 spdk_json_write_string(w, req.name); 88 spdk_jsonrpc_end_result(request, w); 89 90 cleanup: 91 free_rpc_bdev_passthru_create(&req); 92 } 93 SPDK_RPC_REGISTER("bdev_passthru_create", spdk_rpc_bdev_passthru_create, SPDK_RPC_RUNTIME) 94 SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_passthru_create, construct_passthru_bdev) 95 96 struct rpc_bdev_passthru_delete { 97 char *name; 98 }; 99 100 static void 101 free_rpc_bdev_passthru_delete(struct rpc_bdev_passthru_delete *req) 102 { 103 free(req->name); 104 } 105 106 static const struct spdk_json_object_decoder rpc_bdev_passthru_delete_decoders[] = { 107 {"name", offsetof(struct rpc_bdev_passthru_delete, name), spdk_json_decode_string}, 108 }; 109 110 static void 111 _spdk_rpc_bdev_passthru_delete_cb(void *cb_arg, int bdeverrno) 112 { 113 struct spdk_jsonrpc_request *request = cb_arg; 114 struct spdk_json_write_ctx *w; 115 116 w = spdk_jsonrpc_begin_result(request); 117 spdk_json_write_bool(w, bdeverrno == 0); 118 spdk_jsonrpc_end_result(request, w); 119 } 120 121 static void 122 spdk_rpc_bdev_passthru_delete(struct spdk_jsonrpc_request *request, 123 const struct spdk_json_val *params) 124 { 125 struct rpc_bdev_passthru_delete req = {NULL}; 126 struct spdk_bdev *bdev; 127 128 if (spdk_json_decode_object(params, rpc_bdev_passthru_delete_decoders, 129 SPDK_COUNTOF(rpc_bdev_passthru_delete_decoders), 130 &req)) { 131 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 132 "spdk_json_decode_object failed"); 133 goto cleanup; 134 } 135 136 bdev = spdk_bdev_get_by_name(req.name); 137 if (bdev == NULL) { 138 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV)); 139 goto cleanup; 140 } 141 142 bdev_passthru_delete_disk(bdev, _spdk_rpc_bdev_passthru_delete_cb, request); 143 144 cleanup: 145 free_rpc_bdev_passthru_delete(&req); 146 } 147 SPDK_RPC_REGISTER("bdev_passthru_delete", spdk_rpc_bdev_passthru_delete, SPDK_RPC_RUNTIME) 148 SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_passthru_delete, delete_passthru_bdev) 149