osfmk/kern/mach_filter.h

   1 /*
   2  * Copyright (c) 2020 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 #ifndef _KERN_MACH_FILTER_H_
  30 #define _KERN_MACH_FILTER_H_
  31
  32 #if KERNEL_PRIVATE
  33
  34 #include <sys/cdefs.h>
  35 #include <mach/message.h>
  36
  37 /* Sandbox-specific calls for task based message filtering */
  38 typedef boolean_t (*mach_msg_fetch_filter_policy_cbfunc_t) (struct task *task, void *portlabel,
  39     mach_msg_id_t msgid, mach_msg_filter_id *fpid);
  40
  41 struct mach_msg_filter_callbacks {
  42         unsigned int version;
  43         const mach_msg_fetch_filter_policy_cbfunc_t fetch_filter_policy;
  44 };
  45
  46 #define MACH_MSG_FILTER_CALLBACKS_VERSION_0 (0) /* up-to fetch_filter_policy */
  47 #define MACH_MSG_FILTER_CALLBACKS_CURRENT MACH_MSG_FILTER_CALLBACKS_VERSION_0
  48
  49 __BEGIN_DECLS
  50
  51 int mach_msg_filter_register_callback(const struct mach_msg_filter_callbacks *callbacks);
  52
  53 __END_DECLS
  54
  55 #endif /* KERNEL_PRIVATE */
  56
  57 #if XNU_KERNEL_PRIVATE
  58 boolean_t mach_msg_fetch_filter_policy(void *portlabel, mach_msg_id_t msgh_id, mach_msg_filter_id *fid);
  59 #endif /* XNU_KERNEL_PRIVATE */
  60
  61 #endif /* _KERN_MACH_FILTER_H_ */