From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- hurd/fd-close.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 hurd/fd-close.c (limited to 'hurd/fd-close.c') diff --git a/hurd/fd-close.c b/hurd/fd-close.c new file mode 100644 index 0000000000..54beb2a09a --- /dev/null +++ b/hurd/fd-close.c @@ -0,0 +1,46 @@ +/* Copyright (C) 1994, 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +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; +} -- cgit v1.2.3