osfmk/kern/sysdiagnose.c

   1 /*
   2  * Copyright (c) 2015 Apple 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 #include <mach/host_priv.h>
  29 #include <mach/host_special_ports.h>
  30 #include <mach/mach_types.h>
  31 #include <ipc/ipc_port.h>
  32
  33 #include <mach/sysdiagnose_notification.h>
  34
  35 #include <kern/misc_protos.h>
  36 #include <kern/host.h>
  37
  38 #include <sys/kdebug.h>
  39
  40 extern kern_return_t sysdiagnose_notify_user(uint32_t);
  41
  42 /*
  43  * If userland has registered a port for sysdiagnose notifications, send one now.
  44  */
  45 kern_return_t
  46 sysdiagnose_notify_user(uint32_t keycode)
  47 {
  48         mach_port_t user_port;
  49         kern_return_t kr;
  50
  51         kr = host_get_sysdiagnose_port(host_priv_self(), &user_port);
  52         if ((kr != KERN_SUCCESS) || !IPC_PORT_VALID(user_port)) {
  53                 return kr;
  54         }
  55
  56         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SYSDIAGNOSE, SYSDIAGNOSE_NOTIFY_USER) | DBG_FUNC_START, 0, 0, 0, 0, 0);
  57
  58         kr = send_sysdiagnose_notification(user_port, keycode);
  59         ipc_port_release_send(user_port);
  60         return kr;
  61 }