/* * Copyright (c) 2017 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef _LIBKERN_COPYIO_H_ #define _LIBKERN_COPYIO_H_ #include <kern/debug.h> __BEGIN_DECLS int copyin(const user_addr_t uaddr, void *kaddr, size_t len) OS_WARN_RESULT; int copyout(const void *kaddr, user_addr_t udaddr, size_t len); #if defined (_FORTIFY_SOURCE) && _FORTIFY_SOURCE == 0 /* FORTIFY_SOURCE disabled */ #else OS_ALWAYS_INLINE OS_WARN_RESULT static inline int __copyin_chk(const user_addr_t uaddr, void *kaddr, size_t len, size_t chk_size) { if (chk_size < len) { panic("__copyin_chk object size check failed: uaddr %p, kaddr %p, (%zu < %zu)", (void*)uaddr, kaddr, len, chk_size); } return copyin(uaddr, kaddr, len); } OS_ALWAYS_INLINE static inline int __copyout_chk(const void *kaddr, user_addr_t uaddr, size_t len, size_t chk_size) { if (chk_size < len) { panic("__copyout_chk object size check failed: uaddr %p, kaddr %p, (%zu < %zu)", (void*)uaddr, kaddr, len, chk_size); } return copyout(kaddr, uaddr, len); } #define copyin(uaddr, kaddr, len) __copyin_chk(uaddr, kaddr, len, __builtin_object_size(kaddr, 0)) #define copyout(kaddr, uaddr, len) __copyout_chk(kaddr, uaddr, len, __builtin_object_size(kaddr, 0)) #endif __END_DECLS #endif /* _LIBKERN_COPYIO_H_ */