mirror of
https://github.com/darlinghq/darling-xnu.git
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63 lines
2.5 KiB
C
63 lines
2.5 KiB
C
/*
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* Copyright (c) 2017 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 _LIBKERN_COPYIO_H_
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#define _LIBKERN_COPYIO_H_
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#include <kern/debug.h>
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__BEGIN_DECLS
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int copyin(const user_addr_t uaddr, void *kaddr, size_t len) OS_WARN_RESULT;
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int copyout(const void *kaddr, user_addr_t udaddr, size_t len);
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#if defined (_FORTIFY_SOURCE) && _FORTIFY_SOURCE == 0
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/* FORTIFY_SOURCE disabled */
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#else
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OS_ALWAYS_INLINE OS_WARN_RESULT static inline int
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__copyin_chk(const user_addr_t uaddr, void *kaddr, size_t len, size_t chk_size)
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{
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if (chk_size < len) {
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panic("__copyin_chk object size check failed: uaddr %p, kaddr %p, (%zu < %zu)", (void*)uaddr, kaddr, len, chk_size);
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}
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return copyin(uaddr, kaddr, len);
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}
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OS_ALWAYS_INLINE static inline int
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__copyout_chk(const void *kaddr, user_addr_t uaddr, size_t len, size_t chk_size)
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{
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if (chk_size < len) {
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panic("__copyout_chk object size check failed: uaddr %p, kaddr %p, (%zu < %zu)", (void*)uaddr, kaddr, len, chk_size);
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}
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return copyout(kaddr, uaddr, len);
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}
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#define copyin(uaddr, kaddr, len) __copyin_chk(uaddr, kaddr, len, __builtin_object_size(kaddr, 0))
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#define copyout(kaddr, uaddr, len) __copyout_chk(kaddr, uaddr, len, __builtin_object_size(kaddr, 0))
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#endif
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__END_DECLS
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#endif /* _LIBKERN_COPYIO_H_ */
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