47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
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/* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <hurd/fd.h>
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error_t
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_hurd_fd_close (struct hurd_fd *fd)
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{
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error_t err;
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HURD_CRITICAL_BEGIN;
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__spin_lock (&fd->port.lock);
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if (fd->port.port == MACH_PORT_NULL)
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{
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__spin_unlock (&fd->port.lock);
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err = EBADF;
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}
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else
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{
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/* Clear the descriptor's port cells.
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This deallocates the ports if noone else is still using them. */
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_hurd_port_set (&fd->ctty, MACH_PORT_NULL);
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_hurd_port_locked_set (&fd->port, MACH_PORT_NULL);
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err = 0;
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}
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HURD_CRITICAL_END;
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return err;
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}
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