1 | /* |
2 | * Copyright (c) 2013 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 | #ifndef _SYS_PROC_UUID_POLICY_H |
30 | #define _SYS_PROC_UUID_POLICY_H |
31 | |
32 | #include <sys/cdefs.h> |
33 | #include <sys/param.h> |
34 | #include <sys/types.h> |
35 | #include <stdint.h> |
36 | #include <uuid/uuid.h> |
37 | |
38 | __BEGIN_DECLS |
39 | |
40 | /* |
41 | * The proc_uuid_policy subsystem allows a privileged client to |
42 | * upload policies to the kernel keyed by Mach-O executable |
43 | * UUID. In-kernel clients can query this policy table cheaply |
44 | * to determine if a resource or process should by governed |
45 | * by the policy flags. During early boot, the policy table |
46 | * may be empty or sparse, which in-kernel clients should |
47 | * have a specified behavior for. |
48 | */ |
49 | |
50 | #define PROC_UUID_POLICY_OPERATION_CLEAR 0x00000000 |
51 | #define PROC_UUID_POLICY_OPERATION_ADD 0x00000001 |
52 | #define PROC_UUID_POLICY_OPERATION_REMOVE 0x00000002 |
53 | |
54 | /* The namespace of flags are managed by in-kernel clients */ |
55 | #define PROC_UUID_POLICY_FLAGS_NONE 0x00000000 |
56 | #define PROC_UUID_NO_CELLULAR 0x00000001 |
57 | #define PROC_UUID_NECP_APP_POLICY 0x00000002 |
58 | #define PROC_UUID_ALT_DYLD_POLICY 0x00000004 |
59 | #define PROC_UUID_ALT_ROSETTA_POLICY 0x00000008 |
60 | |
61 | /* To be removed, replaced by PROC_UUID_NECP_APP_POLICY */ |
62 | #define PROC_UUID_FLOW_DIVERT 0x00000002 |
63 | |
64 | #ifdef BSD_KERNEL_PRIVATE |
65 | /* |
66 | * Look up a policy indexed by UUID. |
67 | * |
68 | * Paramaters: |
69 | * uuid UUID to look up, must be not the zero-uuid |
70 | * flags Flags that have been associated with the UUID on successful |
71 | * lookup. |
72 | * gencount The generation count of the internal policy table representation. |
73 | * |
74 | * Initial lookups by an in-kernel subsystem should pass 0 for flags/gencount. |
75 | * Subsequent lookups for the same UUID with the same flags and gencount passed |
76 | * in can short-circuit the lookup if the generation count has not changed. |
77 | * |
78 | * Return: |
79 | * 0 Success, UUID was found, flags and gencount are returned |
80 | * EINVAL Bad UUID or other pointer parameter |
81 | * ENOENT UUID not found |
82 | * |
83 | */ |
84 | extern int proc_uuid_policy_lookup(uuid_t uuid, uint32_t *flags, int32_t *gencount); |
85 | |
86 | extern void proc_uuid_policy_init(void); |
87 | |
88 | extern int proc_uuid_policy_kernel(uint32_t operation, uuid_t uuid, uint32_t flags); |
89 | #endif /* BSD_KERNEL_PRIVATE */ |
90 | |
91 | #ifndef KERNEL |
92 | /* |
93 | * Upload a policy indexed by UUID. |
94 | * |
95 | * Parameters: |
96 | * operation CLEAR Clear specified flags for all entries. |
97 | * Entries are removed if they have no remaining flags. |
98 | * ADD Add the specified UUID and flags to the policy table. |
99 | * Flags are ORed with existing entries for the UUID. |
100 | * REMOVE Mask out flags in the entry for the specified UUID. |
101 | * Entry is removed if it has no remaining flags. |
102 | * uuid Pointer to UUID for Mach-O executable |
103 | * uuidlen sizeof(uuid_t) |
104 | * flags Flags to be stored in the policy table. See operation notes above. |
105 | * |
106 | * Return: |
107 | * 0 Success, operation completed without error. |
108 | * -1 Failure, errno can contain: |
109 | * ENOENT REMOVE operation specified a UUID not in the policy table. |
110 | * EPERM Call is not privileged to call this system call |
111 | * EINVAL Invalid parameter |
112 | * ERANGE Invalid uuidlen |
113 | * ENOMEM Too many entries exist |
114 | */ |
115 | extern int proc_uuid_policy(uint32_t operation, uuid_t uuid, size_t uuidlen, uint32_t flags); |
116 | #endif /* !KERNEL */ |
117 | |
118 | __END_DECLS |
119 | |
120 | #endif /*_SYS_PROC_UUID_POLICY_H */ |
121 | |