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/*
* Copyright (c) 2015, 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:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*/
#pragma once
#include <cstddef>
namespace utility
{
/** Write *completely* a buffer in a file descriptor.
*
* A wrapper around unistd::write that resumes write on incomplete access
* and EAGAIN/EINTR error.
*
* @see man 2 write for the parameters.
*
* @return true if the buffer could be completely written,
* false on failure (see write's man errno section).
*/
bool fullWrite(int fd, const void *buf, size_t count);
/** Fill a buffer from a file descriptor.
*
* A wrapper around unistd::read that resumes read on incomplete access
* and EAGAIN/EINTR error.
*
* @see man 2 read for the parameters.
*
* @return true if the buffer could be completely fill,
* false on failure (see read's man errno section).
*
* If the buffer could not be filled due to an EOF, return false but set
* errno to 0.
* @TODO Add a custom strerror to prevent logging "success" (`sterror(0)`) on
* EOF errors ?
*/
bool fullRead(int fd, void *buf, size_t count);
} // namespace utility
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