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
29 #include <mach/mach_types.h>
30 #include <mach/host_special_ports.h>
31 #include <mach/host_priv.h>
32 #include <ipc/ipc_port.h>
33 #include <kern/host.h>
34
35 #include <mach/ktrace_background.h>
36
37 kern_return_t ktrace_background_available_notify_user(void);
38
39 /*
40 * If user space has registered for background notifications, send one.
41 */
42 kern_return_t
ktrace_background_available_notify_user(void)43 ktrace_background_available_notify_user(void)
44 {
45 mach_port_t user_port;
46 kern_return_t kr;
47
48 kr = host_get_ktrace_background_port(host_priv_self(), &user_port);
49 if (kr != KERN_SUCCESS || !IPC_PORT_VALID(user_port)) {
50 return KERN_FAILURE;
51 }
52
53 kr = send_ktrace_background_available(user_port);
54 ipc_port_release_send(user_port);
55 return kr;
56 }
57