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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 <TargetConditionals.h>
30 #include <machine/cpu_capabilities.h>
31 #include <mach/kern_return.h>
32 #include <mach/mach_host.h>
33 #include <mach/host_priv.h>
34 #include <sys/types.h>
35
36 kern_return_t
37 host_get_atm_diagnostic_flag(host_t host __unused,
38 uint32_t *diagnostic_flag)
39 {
40 volatile uint32_t *diagnostic_flag_address = (volatile uint32_t *)(uintptr_t)(_COMM_PAGE_ATM_DIAGNOSTIC_CONFIG);
41 *diagnostic_flag = *diagnostic_flag_address;
42 return KERN_SUCCESS;
43 }
44
45 kern_return_t
46 host_get_multiuser_config_flags(host_t host __unused,
47 uint32_t *multiuser_flags)
48 {
49 #if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
50 volatile uint32_t *multiuser_flag_address = (volatile uint32_t *)(uintptr_t)(_COMM_PAGE_MULTIUSER_CONFIG);
51 *multiuser_flags = *multiuser_flag_address;
52 return KERN_SUCCESS;
53 #else
54 (void)multiuser_flags;
55 return KERN_NOT_SUPPORTED;
56 #endif
57 }
58
59 kern_return_t
60 host_check_multiuser_mode(host_t host __unused,
61 uint32_t *multiuser_mode)
62 {
63 #if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
64 uint32_t multiuser_flags;
65 kern_return_t kr;
66
67 kr = host_get_multiuser_config_flags(host, &multiuser_flags);
68 if (kr != KERN_SUCCESS) {
69 return kr;
70 }
71 *multiuser_mode = (multiuser_flags & kIsMultiUserDevice) == kIsMultiUserDevice;
72 return KERN_SUCCESS;
73 #else
74 (void)multiuser_mode;
75 return KERN_NOT_SUPPORTED;
76 #endif
77 }
78
79 extern kern_return_t
80 _kernelrpc_host_create_mach_voucher(mach_port_name_t host,
81 mach_voucher_attr_raw_recipe_array_t recipes,
82 mach_voucher_attr_recipe_size_t recipesCnt,
83 mach_port_name_t *voucher);
84
85 kern_return_t
86 host_create_mach_voucher(mach_port_name_t host,
87 mach_voucher_attr_raw_recipe_array_t recipes,
88 mach_voucher_attr_recipe_size_t recipesCnt,
89 mach_port_name_t *voucher)
90 {
91 kern_return_t rv;
92
93 rv = host_create_mach_voucher_trap(host, recipes, recipesCnt, voucher);
94
95 #ifdef __x86_64__
96 /* REMOVE once XBS kernel has new trap */
97 if (rv == ((1 << 24) | 70)) { /* see mach/i386/syscall_sw.h */
98 rv = MACH_SEND_INVALID_DEST;
99 }
100 #elif defined(__i386__)
101 /* REMOVE once XBS kernel has new trap */
102 if (rv == (kern_return_t)(-70)) {
103 rv = MACH_SEND_INVALID_DEST;
104 }
105 #endif
106
107 if (rv == MACH_SEND_INVALID_DEST) {
108 rv = _kernelrpc_host_create_mach_voucher(host, recipes, recipesCnt, voucher);
109 }
110
111 return rv;
112 }