event: Add a lib to configure with rpc

LIBNAME = event

C_SRCS = app.c dpdk_init.c reactor.c subsystem.c

DIRS-y = rpc

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.

#

SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../..)

C_SRCS = app_rpc.c

LIBNAME = app_rpc

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 <sys/types.h>

#include <signal.h>

#include <stdint.h>

#include <string.h>

#include <unistd.h>

#include "spdk/log.h"

#include "spdk/rpc.h"

struct rpc_kill_instance {

	char *sig_name;

};

static void

free_rpc_kill_instance(struct rpc_kill_instance *req)

{

	free(req->sig_name);

}

static const struct spdk_json_object_decoder rpc_kill_instance_decoders[] = {

	{"sig_name", offsetof(struct rpc_kill_instance, sig_name), spdk_json_decode_string},

};

static void

spdk_rpc_kill_instance(struct spdk_jsonrpc_server_conn *conn,

		       const struct spdk_json_val *params,

		       const struct spdk_json_val *id)

{

	static const struct {

		const char	*signal_string;

		int32_t		signal;

	} signals[] = {

		{"SIGINT",	SIGINT},

		{"SIGTERM",	SIGTERM},

		{"SIGQUIT",	SIGQUIT},

		{"SIGHUP",	SIGHUP},

		{"SIGKILL",	SIGKILL},

	};

	size_t i, sig_count;

	int signal;

	struct rpc_kill_instance req = {};

	struct spdk_json_write_ctx *w;

	if (spdk_json_decode_object(params, rpc_kill_instance_decoders,

				    sizeof(rpc_kill_instance_decoders) / sizeof(*rpc_kill_instance_decoders),

				    &req)) {

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

		goto invalid;

	}

	sig_count = sizeof(signals) / sizeof(*signals);

	signal = atoi(req.sig_name);

	for (i = 0 ; i < sig_count; i++) {

		if (strcmp(req.sig_name, signals[i].signal_string) == 0 ||

		    signal == signals[i].signal) {

			break;

		}

	}

	if (i == sig_count) {

		goto invalid;

	}

	SPDK_TRACELOG(SPDK_TRACE_DEBUG, "sending signal %d\n", signals[i].signal);

	kill(getpid(), signals[i].signal);

	free_rpc_kill_instance(&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_kill_instance(&req);

}

SPDK_RPC_REGISTER("kill_instance", spdk_rpc_kill_instance)