FreeBSD/Linux Kernel Cross Reference
sys/sys/asan.h

     /*      $NetBSD: asan.h,v 1.15 2020/09/10 14:10:46 maxv Exp $   */
     
     /*
      * Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net
      * All rights reserved.
      *
      * This code is part of the KASAN subsystem of the NetBSD kernel.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _SYS_ASAN_H_
    #define _SYS_ASAN_H_
    
    #ifdef KASAN
    #include <sys/types.h>
    
    /* ASAN constants. Part of the compiler ABI. */
    #define KASAN_SHADOW_SCALE              8
    #define KASAN_SHADOW_SCALE_SHIFT        3
    
    /* Stack redzone values. Part of the compiler ABI. */
    #define KASAN_STACK_LEFT        0xF1
    #define KASAN_STACK_MID         0xF2
    #define KASAN_STACK_RIGHT       0xF3
    #define KASAN_USE_AFTER_RET     0xF5
    #define KASAN_USE_AFTER_SCOPE   0xF8
    
    /* Our redzone values. */
    #define KASAN_GENERIC_REDZONE   0xFA
    #define KASAN_MALLOC_REDZONE    0xFB
    #define KASAN_KMEM_REDZONE      0xFC
    #define KASAN_UMA_FREED         0xFD
    #define KASAN_KSTACK_FREED      0xFE
    #define KASAN_EXEC_ARGS_FREED   0xFF
    
    void kasan_init(void);
    void kasan_init_early(vm_offset_t, size_t);
    void kasan_shadow_map(vm_offset_t, size_t);
    void kasan_mark(const void *, size_t, size_t, uint8_t);
    #else /* KASAN */
    #define kasan_init()
    #define kasan_shadow_map(a, s)
    #define kasan_mark(p, s, l, c)
    #endif /* !KASAN */
    
    #endif /* !_SYS_ASAN_H_ */

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