1 /*
2 * Copyright (c) 2023 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 #if CONFIG_EXCLAVES
30
31 #include <stdint.h>
32 #include <mach/exclaves.h>
33 #include <mach/kern_return.h>
34
35 #include "kern/exclaves.tightbeam.h"
36
37 #include "exclaves_frame_mint.h"
38 #include "exclaves_resource.h"
39 #include "exclaves_debug.h"
40
41 /* -------------------------------------------------------------------------- */
42 #pragma mark Frame Mint
43
44 #define EXCLAVES_FRAME_MINT "com.apple.service.FrameMint"
45
46 static framemint_framemint_s frame_mint_client;
47
48 /*
49 * Called as part of the populate call. As we can't cleanup tightbeam
50 * connections it just sticks around. If we ever need to make any other calls to
51 * FrameMint, having it a separate function makes that easier.
52 */
53 static kern_return_t
exclaves_frame_mint_init(void)54 exclaves_frame_mint_init(void)
55 {
56 exclaves_id_t id = exclaves_service_lookup(EXCLAVES_DOMAIN_KERNEL,
57 EXCLAVES_FRAME_MINT);
58 if (id == EXCLAVES_INVALID_ID) {
59 return KERN_NOT_FOUND;
60 }
61
62 tb_endpoint_t ep = tb_endpoint_create_with_value(
63 TB_TRANSPORT_TYPE_XNU, id, TB_ENDPOINT_OPTIONS_NONE);
64
65 tb_error_t tb_result = framemint_framemint__init(&frame_mint_client, ep);
66
67 if (tb_result != TB_ERROR_SUCCESS) {
68 exclaves_debug_printf(show_errors,
69 "frame mint init: failure %u\n", tb_result);
70 return KERN_FAILURE;
71 }
72
73 return KERN_SUCCESS;
74 }
75
76 kern_return_t
exclaves_frame_mint_populate(void)77 exclaves_frame_mint_populate(void)
78 {
79 __block bool success = false;
80 tb_error_t tb_result = TB_ERROR_SUCCESS;
81
82 kern_return_t kr = exclaves_frame_mint_init();
83 if (kr != KERN_SUCCESS) {
84 return kr;
85 }
86
87 /* BEGIN IGNORE CODESTYLE */
88 tb_result = framemint_framemint_populate(&frame_mint_client,
89 ^(framemint_framemint_populate__result_s result) {
90 if (framemint_framemint_populate__result_get_success(&result)) {
91 success = true;
92 return;
93 }
94
95 framemint_frameminterror_s *error = NULL;
96 error = framemint_framemint_populate__result_get_failure(&result);
97
98 assert3p(error, !=, NULL);
99 exclaves_debug_printf(show_errors,
100 "frame mint failure: failure %u\n", *error);
101 });
102 /* END IGNORE CODESTYLE */
103
104 if (tb_result != TB_ERROR_SUCCESS || !success) {
105 return KERN_FAILURE;
106 }
107
108 return KERN_SUCCESS;
109 }
110
111 #endif /* CONFIG_EXCLAVES */
112