1 /*
2 * Copyright (c) 2020 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 #undef _task_user_
30 #include <TargetConditionals.h>
31 #include <stdbool.h>
32
33 #include <mach/kern_return.h>
34 #include <mach/mach_param.h>
35 #include <mach/mach_port.h>
36 #include <mach/message.h>
37 #include <mach/mig_errors.h>
38 #include <mach/task_internal.h>
39 #include <mach/vm_map.h>
40
41 extern mach_port_t mach_task_self_;
42
43 boolean_t
mach_task_is_self(task_name_t task)44 mach_task_is_self(task_name_t task)
45 {
46 boolean_t is_self;
47 kern_return_t kr;
48
49 if (task == mach_task_self_) {
50 return TRUE;
51 }
52
53 kr = _kernelrpc_mach_task_is_self(task, &is_self);
54
55 return kr == KERN_SUCCESS && is_self;
56 }
57
58
59 kern_return_t
mach_ports_register(task_t target_task,mach_port_array_t init_port_set,mach_msg_type_number_t init_port_setCnt)60 mach_ports_register(
61 task_t target_task,
62 mach_port_array_t init_port_set,
63 mach_msg_type_number_t init_port_setCnt)
64 {
65 mach_port_t array[TASK_PORT_REGISTER_MAX] = { };
66 kern_return_t kr;
67
68 if (init_port_setCnt > TASK_PORT_REGISTER_MAX) {
69 return KERN_INVALID_ARGUMENT;
70 }
71
72 for (mach_msg_type_number_t i = 0; i < init_port_setCnt; i++) {
73 array[i] = init_port_set[i];
74 }
75
76 kr = _kernelrpc_mach_ports_register3(target_task, array[0], array[1], array[2]);
77 return kr;
78 }
79
80 kern_return_t
mach_ports_lookup(task_t target_task,mach_port_array_t * init_port_set,mach_msg_type_number_t * init_port_setCnt)81 mach_ports_lookup(
82 task_t target_task,
83 mach_port_array_t *init_port_set,
84 mach_msg_type_number_t *init_port_setCnt)
85 {
86 vm_size_t size = TASK_PORT_REGISTER_MAX * sizeof(mach_port_t);
87 mach_port_array_t array;
88 vm_address_t addr = 0;
89 kern_return_t kr;
90
91 kr = vm_allocate(target_task, &addr, size, VM_FLAGS_ANYWHERE);
92 array = (mach_port_array_t)addr;
93 if (kr != KERN_SUCCESS) {
94 return kr;
95 }
96
97
98 kr = _kernelrpc_mach_ports_lookup3(target_task,
99 &array[0], &array[1], &array[2]);
100 if (kr != KERN_SUCCESS) {
101 vm_deallocate(target_task, addr, size);
102 return kr;
103 }
104
105 *init_port_set = array;
106 *init_port_setCnt = TASK_PORT_REGISTER_MAX;
107 return KERN_SUCCESS;
108 }
109