sortix-mirror/libc/fsetlocking.cpp

37 lines
1.3 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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/>.
fsetlocking.cpp
Sets the desired locking semantics on a FILE.
*******************************************************************************/
#include <stdio.h>
extern "C" int fsetlocking(FILE* fp, int type)
{
switch ( type )
{
case FSETLOCKING_INTERNAL: fp->flags |= _FILE_AUTO_LOCK;
case FSETLOCKING_BYCALLER: fp->flags &= ~_FILE_AUTO_LOCK;
}
return (fp->flags & _FILE_AUTO_LOCK) ? FSETLOCKING_INTERNAL
: FSETLOCKING_BYCALLER;
}