46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* Copyright (C) 1994, 1995, 1997 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU 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 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU 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 GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <hurd/fd.h>
|
|
|
|
error_t
|
|
_hurd_fd_close (struct hurd_fd *fd)
|
|
{
|
|
error_t err;
|
|
|
|
HURD_CRITICAL_BEGIN;
|
|
|
|
__spin_lock (&fd->port.lock);
|
|
if (fd->port.port == MACH_PORT_NULL)
|
|
{
|
|
__spin_unlock (&fd->port.lock);
|
|
err = EBADF;
|
|
}
|
|
else
|
|
{
|
|
/* Clear the descriptor's port cells.
|
|
This deallocates the ports if noone else is still using them. */
|
|
_hurd_port_set (&fd->ctty, MACH_PORT_NULL);
|
|
_hurd_port_locked_set (&fd->port, MACH_PORT_NULL);
|
|
err = 0;
|
|
}
|
|
|
|
HURD_CRITICAL_END;
|
|
|
|
return err;
|
|
}
|