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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.
*/
#ifndef ADB_IO_H
#define ADB_IO_H
#include <sys/types.h>
#include <string>
// Sends the protocol "OKAY" message.
bool SendOkay(int fd);
// Sends the protocol "FAIL" message, with the given failure reason.
bool SendFail(int fd, const std::string& reason);
// Writes a protocol-format string; a four hex digit length followed by the string data.
bool SendProtocolString(int fd, const std::string& s);
/*
* Reads exactly len bytes from fd into buf.
*
* Returns false if there is an error or if EOF was reached before len bytes
* were read. If EOF was found, errno will be set to 0.
*
* If this function fails, the contents of buf are undefined.
*/
bool ReadFdExactly(int fd, void *buf, size_t len);
/*
* Writes exactly len bytes from buf to fd.
*
* Returns false if there is an error or if the fd was closed before the write
* completed. If the other end of the fd (such as in a socket, pipe, or fifo),
* is closed, errno will be set to 0.
*/
bool WriteFdExactly(int fd, const void* buf, size_t len);
// Same as above, but for strings.
bool WriteFdExactly(int fd, const char* s);
bool WriteFdExactly(int fd, const std::string& s);
// Same as above, but formats the string to send.
bool WriteFdFmt(int fd, const char* fmt, ...) __attribute__((__format__(__printf__, 2, 3)));
#endif /* ADB_IO_H */
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