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sortix--sortix/libc/setvbuf.cpp

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/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
setvbuf.cpp
Sets up buffering semantics for a FILE.
*******************************************************************************/
#include <errno.h>
#include <stdio.h>
extern "C" int setvbuf(FILE* fp, char* buf, int mode, size_t size)
{
if ( fp->flags & _FILE_BUFFER_MODE_SET )
return errno = EINVAL, -1;
fp->buffer_mode = mode;
if ( buf )
{
fp->buffer = (unsigned char*) buf;
fp->buffersize = size;
fp->flags |= _FILE_BUFFER_MODE_SET;
}
return 0;
}