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sortix--sortix/libc/dirent/dunregister.cpp
2014-07-08 17:41:52 +02:00

44 lines
1.5 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2014.
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/>.
dirent/dunregister.cpp
Unregisters an directory stream for later automatic closing.
*******************************************************************************/
#include <dirent.h>
#include <DIR.h>
#include <pthread.h>
extern "C" { pthread_mutex_t __dirname_lock = PTHREAD_MUTEX_INITIALIZER; }
extern "C" void dunregister(DIR* dir)
{
if ( !(dir->flags & _DIR_REGISTERED) )
return;
pthread_mutex_lock(&__dirname_lock);
if ( !dir->prev )
__firstdir = dir->next;
if ( dir->prev )
dir->prev->next = dir->next;
if ( dir->next )
dir->next->prev = dir->prev;
dir->flags &= ~_DIR_REGISTERED;
pthread_mutex_unlock(&__dirname_lock);
}