/*- * 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. */ #ifndef SPDK_RPC_CONFIG_H_ #define SPDK_RPC_CONFIG_H_ #include "spdk/stdinc.h" #include "spdk/jsonrpc.h" #ifdef __cplusplus extern "C" { #endif /** * Verify correctness of registered RPC methods and aliases. * * Incorrect registrations include: * - multiple RPC methods registered with the same name * - RPC alias registered with a method that does not exist * - RPC alias registered that points to another alias * * \return true if registrations are all correct, false otherwise */ bool spdk_rpc_verify_methods(void); /** * Start listening for RPC connections. * * \param listen_addr Listening address. * * \return 0 on success, -1 on failure. */ int spdk_rpc_listen(const char *listen_addr); /** * Poll the RPC server. */ void spdk_rpc_accept(void); /** * Stop listening for RPC connections. */ void spdk_rpc_close(void); /** * Function signature for RPC request handlers. * * \param request RPC request to handle. * \param params Parameters associated with the RPC request. */ typedef void (*spdk_rpc_method_handler)(struct spdk_jsonrpc_request *request, const struct spdk_json_val *params); /** * Register an RPC method. * * \param method Name for the registered method. * \param func Function registered for this method to handle the RPC request. * \param state_mask State mask of the registered method. If the bit of the state of * the RPC server is set in the state_mask, the method is allowed. Otherwise, it is rejected. */ void spdk_rpc_register_method(const char *method, spdk_rpc_method_handler func, uint32_t state_mask); /** * Register a deprecated alias for an RPC method. * * \param method Name for the registered method. * \param alias Alias for the registered method. */ void spdk_rpc_register_alias_deprecated(const char *method, const char *alias); /** * Check if \c method is allowed for \c state_mask * * \param method Method name * \param state_mask state mask to check against * \return 0 if method is allowed or negative error code: * -EPERM method is not allowed * -ENOENT method not found */ int spdk_rpc_is_method_allowed(const char *method, uint32_t state_mask); #define SPDK_RPC_STARTUP 0x1 #define SPDK_RPC_RUNTIME 0x2 /* Give SPDK_RPC_REGISTER a higher execution priority than * SPDK_RPC_REGISTER_ALIAS_DEPRECATED to ensure all of the RPCs are registered * before we try registering any aliases. Some older versions of clang may * otherwise execute the constructors in a different order than * defined in the source file (see issue #892). */ #define SPDK_RPC_REGISTER(method, func, state_mask) \ static void __attribute__((constructor(1000))) rpc_register_##func(void) \ { \ spdk_rpc_register_method(method, func, state_mask); \ } #define SPDK_RPC_REGISTER_ALIAS_DEPRECATED(method, alias) \ static void __attribute__((constructor(1001))) rpc_register_##alias(void) \ { \ spdk_rpc_register_alias_deprecated(#method, #alias); \ } /** * Set the state mask of the RPC server. Any RPC method whose state mask is * equal to the state of the RPC server is allowed. * * \param state_mask New state mask of the RPC server. */ void spdk_rpc_set_state(uint32_t state_mask); /** * Get the current state of the RPC server. * * \return The current state of the RPC server. */ uint32_t spdk_rpc_get_state(void); #ifdef __cplusplus } #endif #endif