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/*
* Firmware loader for Samsung I9100 and I9250
* Copyright (C) 2012 Alexander Tarasikov <alexander.tarasikov@gmail.com>
*
* based on the incomplete C++ implementation which is
* Copyright (C) 2012 Sergey Gridasov <grindars@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __IO_HELPERS_H__
#define __IO_HELPERS_H__
#include "common.h"
/*
* @brief A wrapper around ioctl that prints the error to the log
*
* @param fd [in] File descriptor of the socket
* @param code [in] ioctl code
* @param data argument to the ioctl
* @return Negative value indicating error code
* @return ioctl call result
*/
int c_ioctl(int fd, unsigned long code, void* data);
/*
* @brief Waits for fd to become available for reading
*
* @param fd [in] File descriptor of the socket
* @param timeout [in] Timeout in milliseconds
* @return Negative value indicating error code
* @return Available socket number - 1, as select()
*/
int read_select(int fd, unsigned timeout);
/*
* @brief Waits for data available and reads it to the buffer
*
* @param fd [in] File descriptor of the socket
* @param buf Buffer to hold data
* @param size [in] The number of bytes to read
* @return Negative value indicating error code
* @return The size of data received
*/
int receive(int fd, void *buf, size_t size);
/*
* @brief Receives data and compares with the pattern in memory
*
* @param fd [in] File descriptor of the socket
* @param data [in] The pattern to compare to
* @param size [in] The length of data to read in bytes
* @return Negative value indicating error code
* @return Available socket number - 1, as select()
*/
int expect_data(int fd, void *data, size_t size);
#endif //__IO_HELPERS_H__
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