1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* Take a receive right away from a port
Copyright (C) 1996, 2001 Free Software Foundation, Inc.
Written by Michael I. Bushnell, p/BSG.
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include "ports.h"
#include <assert.h>
#include <errno.h>
#include <hurd/ihash.h>
mach_port_t
ports_claim_right (void *portstruct)
{
error_t err;
struct port_info *pi = portstruct;
mach_port_t ret = pi->port_right;
if (ret == MACH_PORT_NULL)
return ret;
mutex_lock (&_ports_lock);
hurd_ihash_locp_remove (&pi->bucket->htable, pi->hentry);
err = mach_port_move_member (mach_task_self (), ret, MACH_PORT_NULL);
assert_perror (err);
pi->port_right = MACH_PORT_NULL;
if (pi->flags & PORT_HAS_SENDRIGHTS)
{
pi->flags &= ~PORT_HAS_SENDRIGHTS;
mutex_unlock (&_ports_lock);
ports_port_deref (pi);
}
else
mutex_unlock (&_ports_lock);
return ret;
}
|
