util.c

/**
 * Copyright © 2016 IBM Corporation
 *
 * 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.
 */

#include <err.h>
#include <unistd.h>

#include "console-server.h"

int write_buf_to_fd(int fd, const uint8_t *buf, size_t len)
{
	size_t pos;
	ssize_t rc;

	for (pos = 0; pos < len; pos += rc) {
		rc = write(fd, buf + pos, len - pos);
		if (rc <= 0) {
			warn("Write error");
			return -1;
		}
	}

	return 0;
}