/*
 * Copyright 2022 Unisoc (Shanghai) Technologies Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * SPDX-FileCopyrightText: 2022 Unisoc (Shanghai) Technologies Co., Ltd
 * SPDX-License-Identifier: LicenseRef-Unisoc-General-1.0
 *
 * Licensed under the Unisoc General Software License, version 1.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.unisoc.com/en_us/license/UNISOC_GENERAL_LICENSE_V1.0-EN_US
 *
 * Software distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied.
 * See the Unisoc General Software License, version 1.0 for more details.
 */

#define LOG_TAG "libtrusty"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include "tipc_ioctl.h"

#define LOCAL_TRACE 1

#define ALOGE(fmt, ...) \
    fprintf(stderr, "%s: %d: " fmt, LOG_TAG, __LINE__,  ## __VA_ARGS__)
#if LOCAL_TRACE
#define ALOGV(fmt, ...) \
    fprintf(stderr, "%s: %d: " fmt, LOG_TAG, __LINE__,  ## __VA_ARGS__)
#else
#define ALOGV(fmt, ...)
#endif

int tipc_connect(const char *device, const char *port)
{
	int fd, rc;

	fd = open(device, O_RDWR);
	if (fd < 0) {
		rc = -errno;
		ALOGE("cannot open tipc device \"%s\": %s\n", device, strerror(errno));
		goto error;
	}

	rc = ioctl(fd, TIPC_IOC_CONNECT, port);
	if (rc < 0) {
		rc = -errno;
		ALOGE("can't connect to tipc service \"%s\" (err=%d)\n", port, errno);
		close(fd);
		goto error;
	}

	ALOGV("%s: connected to \"%s\" fd %d\n", __func__, port, fd);
	return fd;
error:
	return rc < 0 ? rc : -1;
}

void tipc_close(int fd)
{
	close(fd);
}