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/*
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "ports.h"
#include <assert.h>
#include <cthreads.h>
#include <hurd/ihash.h>
#include <mach/notify.h>
void
ports_reallocate_from_external (void *portstruct, mach_port_t receive)
{
struct port_info *pi = portstruct;
mach_port_status_t stat;
int dropref = 0;
mach_port_t foo;
error_t err;
err = mach_port_get_receive_status (mach_task_self (), receive, &stat);
assert_perror (err);
mutex_lock (&_ports_lock);
err = mach_port_mod_refs (mach_task_self (), pi->port_right,
MACH_PORT_RIGHT_RECEIVE, -1);
assert_perror (err);
ihash_locp_remove (pi->bucket->htable, pi->hentry);
if ((pi->flags & PORT_HAS_SENDRIGHTS) && !stat.mps_srights)
{
dropref = 1;
pi->flags &= ~PORT_HAS_SENDRIGHTS;
}
else if (((pi->flags & PORT_HAS_SENDRIGHTS) == 0) && stat.mps_srights)
{
pi->flags |= PORT_HAS_SENDRIGHTS;
pi->refcnt++;
}
pi->port_right = receive;
pi->cancel_threshold = 0;
pi->mscount = stat.mps_mscount;
ihash_add (pi->bucket->htable, receive, pi, &pi->hentry);
mutex_unlock (&_ports_lock);
mach_port_move_member (mach_task_self (), receive, pi->bucket->portset);
if (stat.mps_srights)
{
err = mach_port_request_notification (mach_task_self (), receive,
MACH_NOTIFY_NO_SENDERS,
stat.mps_mscount, receive,
MACH_MSG_TYPE_MAKE_SEND_ONCE,
&foo);
assert_perror (err);
if (foo != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self (), foo);
}
if (dropref)
ports_port_deref (pi);
}
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