1 /* $NetBSD: msan.h,v 1.2 2020/09/09 16:29:59 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 2019-2020 Maxime Villard, m00nbsd.net 5 * All rights reserved. 6 * 7 * This code is part of the KMSAN subsystem of the NetBSD kernel. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef _SYS_MSAN_H_ 32 #define _SYS_MSAN_H_ 33 34 #ifdef KMSAN 35 #include <sys/_bus_dma.h> 36 #include <sys/types.h> 37 38 #define KMSAN_STATE_UNINIT 0xFF 39 #define KMSAN_STATE_INITED 0x00 40 41 #define KMSAN_TYPE_STACK 0 42 #define KMSAN_TYPE_KMEM 1 43 #define KMSAN_TYPE_MALLOC 2 44 #define KMSAN_TYPE_UMA 3 45 #define KMSAN_TYPE_MAX 3 46 47 #define KMSAN_RET_ADDR (uintptr_t)__builtin_return_address(0) 48 49 union ccb; 50 struct bio; 51 struct mbuf; 52 struct memdesc; 53 struct uio; 54 55 void kmsan_init(void); 56 57 void kmsan_shadow_map(vm_offset_t, size_t); 58 59 void kmsan_thread_alloc(struct thread *); 60 void kmsan_thread_free(struct thread *); 61 62 void kmsan_bus_dmamap_sync(struct memdesc *, bus_dmasync_op_t); 63 64 void kmsan_orig(const void *, size_t, int, uintptr_t); 65 void kmsan_mark(const void *, size_t, uint8_t); 66 void kmsan_mark_bio(const struct bio *, uint8_t); 67 void kmsan_mark_mbuf(const struct mbuf *, uint8_t); 68 69 void kmsan_check(const void *, size_t, const char *); 70 void kmsan_check_bio(const struct bio *, const char *); 71 void kmsan_check_ccb(const union ccb *, const char *); 72 void kmsan_check_mbuf(const struct mbuf *, const char *); 73 void kmsan_check_uio(const struct uio *, const char *); 74 75 #else 76 #define kmsan_init(u) 77 #define kmsan_shadow_map(a, s) 78 #define kmsan_thread_alloc(td) 79 #define kmsan_thread_free(l) 80 #define kmsan_dma_sync(m, a, s, o) 81 #define kmsan_dma_load(m, b, s, o) 82 #define kmsan_orig(p, l, c, a) 83 #define kmsan_mark(p, l, c) 84 #define kmsan_mark_bio(b, c) 85 #define kmsan_mark_mbuf(m, c) 86 #define kmsan_check(b, s, d) 87 #define kmsan_check_bio(b, d) 88 #define kmsan_check_ccb(c, d) 89 #define kmsan_check_mbuf(m, d) 90 #define kmsan_check_uio(u, d) 91 #define kmsan_bus_dmamap_sync(d, op) 92 #endif 93 94 #endif /* !_SYS_MSAN_H_ */ 95