libsyscall/mach/port_obj.c

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