121 lines
4.8 KiB
C
121 lines
4.8 KiB
C
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/*
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* Copyright (c) 2013 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _SYS_PROC_UUID_POLICY_H
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#define _SYS_PROC_UUID_POLICY_H
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <uuid/uuid.h>
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__BEGIN_DECLS
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/*
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* The proc_uuid_policy subsystem allows a privileged client to
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* upload policies to the kernel keyed by Mach-O executable
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* UUID. In-kernel clients can query this policy table cheaply
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* to determine if a resource or process should by governed
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* by the policy flags. During early boot, the policy table
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* may be empty or sparse, which in-kernel clients should
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* have a specified behavior for.
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*/
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#define PROC_UUID_POLICY_OPERATION_CLEAR 0x00000000
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#define PROC_UUID_POLICY_OPERATION_ADD 0x00000001
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#define PROC_UUID_POLICY_OPERATION_REMOVE 0x00000002
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/* The namespace of flags are managed by in-kernel clients */
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#define PROC_UUID_POLICY_FLAGS_NONE 0x00000000
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#define PROC_UUID_NO_CELLULAR 0x00000001
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#define PROC_UUID_NECP_APP_POLICY 0x00000002
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#define PROC_UUID_ALT_DYLD_POLICY 0x00000004
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#define PROC_UUID_ALT_ROSETTA_POLICY 0x00000008
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/* To be removed, replaced by PROC_UUID_NECP_APP_POLICY */
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#define PROC_UUID_FLOW_DIVERT 0x00000002
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#ifdef BSD_KERNEL_PRIVATE
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/*
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* Look up a policy indexed by UUID.
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*
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* Paramaters:
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* uuid UUID to look up, must be not the zero-uuid
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* flags Flags that have been associated with the UUID on successful
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* lookup.
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* gencount The generation count of the internal policy table representation.
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*
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* Initial lookups by an in-kernel subsystem should pass 0 for flags/gencount.
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* Subsequent lookups for the same UUID with the same flags and gencount passed
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* in can short-circuit the lookup if the generation count has not changed.
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*
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* Return:
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* 0 Success, UUID was found, flags and gencount are returned
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* EINVAL Bad UUID or other pointer parameter
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* ENOENT UUID not found
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*
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*/
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extern int proc_uuid_policy_lookup(uuid_t uuid, uint32_t *flags, int32_t *gencount);
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extern void proc_uuid_policy_init(void);
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extern int proc_uuid_policy_kernel(uint32_t operation, uuid_t uuid, uint32_t flags);
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#endif /* BSD_KERNEL_PRIVATE */
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#ifndef KERNEL
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/*
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* Upload a policy indexed by UUID.
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*
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* Parameters:
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* operation CLEAR Clear specified flags for all entries.
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* Entries are removed if they have no remaining flags.
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* ADD Add the specified UUID and flags to the policy table.
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* Flags are ORed with existing entries for the UUID.
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* REMOVE Mask out flags in the entry for the specified UUID.
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* Entry is removed if it has no remaining flags.
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* uuid Pointer to UUID for Mach-O executable
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* uuidlen sizeof(uuid_t)
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* flags Flags to be stored in the policy table. See operation notes above.
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*
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* Return:
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* 0 Success, operation completed without error.
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* -1 Failure, errno can contain:
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* ENOENT REMOVE operation specified a UUID not in the policy table.
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* EPERM Call is not privileged to call this system call
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* EINVAL Invalid parameter
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* ERANGE Invalid uuidlen
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* ENOMEM Too many entries exist
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*/
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extern int proc_uuid_policy(uint32_t operation, uuid_t uuid, size_t uuidlen, uint32_t flags);
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#endif /* !KERNEL */
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__END_DECLS
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#endif /*_SYS_PROC_UUID_POLICY_H */
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