xref: /xnu-11417.121.6/libsyscall/mach/port_obj.c (revision a1e26a70f38d1d7daa7b49b258e2f8538ad81650)
1*a1e26a70SApple OSS Distributions /*
2*a1e26a70SApple OSS Distributions  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
3*a1e26a70SApple OSS Distributions  *
4*a1e26a70SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*a1e26a70SApple OSS Distributions  *
6*a1e26a70SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*a1e26a70SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*a1e26a70SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*a1e26a70SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*a1e26a70SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*a1e26a70SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*a1e26a70SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*a1e26a70SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*a1e26a70SApple OSS Distributions  *
15*a1e26a70SApple OSS Distributions  * Please obtain a copy of the License at
16*a1e26a70SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*a1e26a70SApple OSS Distributions  *
18*a1e26a70SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*a1e26a70SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*a1e26a70SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*a1e26a70SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*a1e26a70SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*a1e26a70SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*a1e26a70SApple OSS Distributions  * limitations under the License.
25*a1e26a70SApple OSS Distributions  *
26*a1e26a70SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*a1e26a70SApple OSS Distributions  */
28*a1e26a70SApple OSS Distributions /*
29*a1e26a70SApple OSS Distributions  * @OSF_COPYRIGHT@
30*a1e26a70SApple OSS Distributions  */
31*a1e26a70SApple OSS Distributions 
32*a1e26a70SApple OSS Distributions /*
33*a1e26a70SApple OSS Distributions  * Define a service to map from a kernel-generated port name
34*a1e26a70SApple OSS Distributions  * to server-defined "type" and "value" data to be associated
35*a1e26a70SApple OSS Distributions  * with the port.
36*a1e26a70SApple OSS Distributions  */
37*a1e26a70SApple OSS Distributions #include <mach/port_obj.h>
38*a1e26a70SApple OSS Distributions #include <mach/mach.h>
39*a1e26a70SApple OSS Distributions 
40*a1e26a70SApple OSS Distributions #define DEFAULT_TABLE_SIZE      (64 * 1024)
41*a1e26a70SApple OSS Distributions 
42*a1e26a70SApple OSS Distributions struct port_obj_tentry *port_obj_table;
43*a1e26a70SApple OSS Distributions int port_obj_table_size = DEFAULT_TABLE_SIZE;
44*a1e26a70SApple OSS Distributions 
45*a1e26a70SApple OSS Distributions void
port_obj_init(int maxsize)46*a1e26a70SApple OSS Distributions port_obj_init(int maxsize)
47*a1e26a70SApple OSS Distributions {
48*a1e26a70SApple OSS Distributions 	kern_return_t kr;
49*a1e26a70SApple OSS Distributions 
50*a1e26a70SApple OSS Distributions 	kr = vm_allocate(mach_task_self_,
51*a1e26a70SApple OSS Distributions 	    (vm_offset_t *)&port_obj_table,
52*a1e26a70SApple OSS Distributions 	    (vm_size_t)(maxsize * sizeof(*port_obj_table)),
53*a1e26a70SApple OSS Distributions 	    TRUE);
54*a1e26a70SApple OSS Distributions 	if (kr != KERN_SUCCESS) {
55*a1e26a70SApple OSS Distributions 		panic("port_obj_init: can't vm_allocate");
56*a1e26a70SApple OSS Distributions 	}
57*a1e26a70SApple OSS Distributions }
58