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

     /*      $NetBSD: msan.h,v 1.2 2020/09/09 16:29:59 maxv Exp $    */
     
     /*
      * Copyright (c) 2019-2020 Maxime Villard, m00nbsd.net
      * All rights reserved.
      *
      * This code is part of the KMSAN 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.
     */
    
    #ifndef _SYS_MSAN_H_
    #define _SYS_MSAN_H_
    
    #ifdef KMSAN
    #include <sys/_bus_dma.h>
    #include <sys/types.h>
    
    #define KMSAN_STATE_UNINIT      0xFF
    #define KMSAN_STATE_INITED      0x00
    
    #define KMSAN_TYPE_STACK        0
    #define KMSAN_TYPE_KMEM         1
    #define KMSAN_TYPE_MALLOC       2
    #define KMSAN_TYPE_UMA          3
    #define KMSAN_TYPE_MAX          3
    
    #define KMSAN_RET_ADDR          (uintptr_t)__builtin_return_address(0)
    
    union ccb;
    struct bio;
    struct mbuf;
    struct memdesc;
    
    void kmsan_init(void);
    
    void kmsan_shadow_map(vm_offset_t, size_t);
    
    void kmsan_thread_alloc(struct thread *);
    void kmsan_thread_free(struct thread *);
    
    void kmsan_bus_dmamap_sync(struct memdesc *, bus_dmasync_op_t);
    
    void kmsan_orig(const void *, size_t, int, uintptr_t);
    void kmsan_mark(const void *, size_t, uint8_t);
    void kmsan_mark_bio(const struct bio *, uint8_t);
    void kmsan_mark_mbuf(const struct mbuf *, uint8_t);
    
    void kmsan_check(const void *, size_t, const char *);
    void kmsan_check_bio(const struct bio *, const char *);
    void kmsan_check_ccb(const union ccb *, const char *);
    void kmsan_check_mbuf(const struct mbuf *, const char *);
    
    #else
    #define kmsan_init(u)
    #define kmsan_shadow_map(a, s)
    #define kmsan_thread_alloc(td)
    #define kmsan_thread_free(l)
    #define kmsan_dma_sync(m, a, s, o)
    #define kmsan_dma_load(m, b, s, o)
    #define kmsan_orig(p, l, c, a)
    #define kmsan_mark(p, l, c)
    #define kmsan_mark_bio(b, c)
    #define kmsan_mark_mbuf(m, c)
    #define kmsan_check(b, s, d)
    #define kmsan_check_bio(b, d)
    #define kmsan_check_ccb(c, d)
    #define kmsan_check_mbuf(m, d)
    #define kmsan_bus_dmamap_sync(d, op)
    #endif
    
    #endif /* !_SYS_MSAN_H_ */

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