osfmk/kern/task_policy.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 2000 Apple Computer, Inc.  All rights reserved.
  24  *
  25  * HISTORY
  26  *
  27  * 15 October 2000 (debo)
  28  *  Created.
  29  */
  30
  31 #include <mach/mach_types.h>
  32
  33 kern_return_t
  34 task_policy_set(
  35         task_t                                  task,
  36         task_policy_flavor_t    flavor,
  37         task_policy_t                   policy_info,
  38         mach_msg_type_number_t  count)
  39 {
  40         if (task == TASK_NULL)
  41                 return (KERN_INVALID_ARGUMENT);
  42
  43         switch (flavor) {
  44
  45         case TASK_CATEGORY_POLICY:
  46         {
  47                 task_category_policy_t          info = (task_category_policy_t)policy_info;
  48
  49                 if (count < TASK_CATEGORY_POLICY_COUNT)
  50                         return (KERN_INVALID_ARGUMENT);
  51
  52                 switch (info->role) {
  53
  54                 case TASK_UNSPECIFIED:
  55                 case TASK_FOREGROUND_APPLICATION:
  56                 case TASK_BACKGROUND_APPLICATION:
  57                 case TASK_CONTROL_APPLICATION:
  58                 case TASK_GRAPHICS_SERVER:
  59                         return (KERN_SUCCESS);
  60
  61                 default:
  62                         return (KERN_INVALID_ARGUMENT);
  63                 }
  64
  65                 break;
  66         }
  67
  68         default:
  69                 return (KERN_INVALID_ARGUMENT);
  70         }
  71
  72         return (KERN_SUCCESS);
  73 }
  74
  75 kern_return_t
  76 task_policy_get(
  77         task_t                                  task,
  78         task_policy_flavor_t    flavor,
  79         task_policy_t                   policy_info,
  80         mach_msg_type_number_t  *count,
  81         boolean_t                               *get_default)
  82 {
  83         if (task == TASK_NULL)
  84                 return (KERN_INVALID_ARGUMENT);
  85
  86         switch (flavor) {
  87
  88         case TASK_CATEGORY_POLICY:
  89         {
  90                 task_category_policy_t          info = (task_category_policy_t)policy_info;
  91
  92                 if (*count < TASK_CATEGORY_POLICY_COUNT)
  93                         return (KERN_INVALID_ARGUMENT);
  94
  95                 info->role = TASK_UNSPECIFIED;
  96                 break;
  97         }
  98
  99         default:
 100                 return (KERN_INVALID_ARGUMENT);
 101         }
 102
 103         return (KERN_SUCCESS);
 104 }