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