| 1 | /** @file
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| 2 | * IPRT - Fuzzing framework
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2018 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef ___iprt_fuzz_h
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| 27 | #define ___iprt_fuzz_h
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| 28 |
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| 29 | #include <iprt/cdefs.h>
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| 30 | #include <iprt/types.h>
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| 31 |
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| 32 | RT_C_DECLS_BEGIN
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| 33 |
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| 34 | /** @defgroup grp_rt_fuzz RTFuzz - Data fuzzing framework
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| 35 | * @ingroup grp_rt
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| 36 | * @sa grp_rt_test
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| 37 | * @{
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| 38 | */
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| 39 |
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| 40 | /** A fuzzer context handle. */
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| 41 | typedef struct RTFUZZCTXINT *RTFUZZCTX;
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| 42 | /** Pointer to a fuzzer context handle. */
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| 43 | typedef RTFUZZCTX *PRTFUZZCTX;
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| 44 | /** NIL fuzzer context handle. */
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| 45 | #define NIL_RTFUZZCTX ((RTFUZZCTX)~(uintptr_t)0)
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| 46 | /** A fuzzer input handle. */
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| 47 | typedef struct RTFUZZINPUTINT *RTFUZZINPUT;
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| 48 | /** Pointer to a fuzzer input handle. */
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| 49 | typedef RTFUZZINPUT *PRTFUZZINPUT;
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| 50 | /** NIL fuzzer input handle. */
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| 51 | #define NIL_RTFUZZINPUT ((RTFUZZINPUT)~(uintptr_t)0)
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| 52 |
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| 53 |
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| 54 | /** Fuzzing observer handle. */
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| 55 | typedef struct RTFUZZOBSINT *RTFUZZOBS;
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| 56 | /** Pointer to a fuzzing observer handle. */
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| 57 | typedef RTFUZZOBS *PRTFUZZOBS;
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| 58 | /** NIL fuzzing observer handle. */
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| 59 | #define NIL_RTFUZZOBS ((RTFUZZOBS)~(uintptr_t)0)
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| 60 |
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| 61 |
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| 62 | /** @name RTFUZZCTX_F_XXX - Flags for RTFuzzCtxCfgSetBehavioralFlags
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| 63 | * @{ */
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| 64 | /** Adds all generated inputs automatically to the input corpus for the owning context. */
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| 65 | #define RTFUZZCTX_F_BEHAVIORAL_ADD_INPUT_AUTOMATICALLY_TO_CORPUS RT_BIT_32(0)
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| 66 | /** All valid behavioral modification flags. */
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| 67 | #define RTFUZZCTX_F_BEHAVIORAL_VALID (RTFUZZCTX_F_BEHAVIORAL_ADD_INPUT_AUTOMATICALLY_TO_CORPUS)
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| 68 | /** @} */
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| 69 |
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| 70 | /**
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| 71 | * Creates a new fuzzing context.
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| 72 | *
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| 73 | * @returns IPRT status code.
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| 74 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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| 75 | */
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| 76 | RTDECL(int) RTFuzzCtxCreate(PRTFUZZCTX phFuzzCtx);
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| 77 |
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| 78 | /**
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| 79 | * Creates a new fuzzing context from the given state.
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| 80 | *
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| 81 | * @returns IPRT status code.
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| 82 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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| 83 | * @param pvState The pointer to the fuzzing state.
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| 84 | * @param cbState Size of the state buffer in bytes.
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| 85 | */
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| 86 | RTDECL(int) RTFuzzCtxCreateFromState(PRTFUZZCTX phFuzzCtx, const void *pvState, size_t cbState);
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| 87 |
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| 88 | /**
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| 89 | * Creates a new fuzzing context loading the state from the given file.
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| 90 | *
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| 91 | * @returns IPRT status code.
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| 92 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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| 93 | * @param pszFilename File to load the fuzzing context from.
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| 94 | */
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| 95 | RTDECL(int) RTFuzzCtxCreateFromStateFile(PRTFUZZCTX phFuzzCtx, const char *pszFilename);
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| 96 |
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| 97 | /**
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| 98 | * Retains a reference to the given fuzzing context.
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| 99 | *
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| 100 | * @returns New reference count on success.
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| 101 | * @param hFuzzCtx Handle of the fuzzing context.
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| 102 | */
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| 103 | RTDECL(uint32_t) RTFuzzCtxRetain(RTFUZZCTX hFuzzCtx);
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| 104 |
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| 105 | /**
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| 106 | * Releases a reference from the given fuzzing context, destroying it when reaching 0.
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| 107 | *
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| 108 | * @returns New reference count on success, 0 if the fuzzing context got destroyed.
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| 109 | * @param hFuzzCtx Handle of the fuzzing context.
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| 110 | */
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| 111 | RTDECL(uint32_t) RTFuzzCtxRelease(RTFUZZCTX hFuzzCtx);
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| 112 |
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| 113 | /**
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| 114 | * Exports the given fuzzing context state.
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| 115 | *
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| 116 | * @returns IPRT statuse code
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| 117 | * @param hFuzzCtx The fuzzing context to export.
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| 118 | * @param ppvState Where to store the buffer of the state on success, free with RTMemFree().
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| 119 | * @param pcbState Where to store the size of the context on success.
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| 120 | */
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| 121 | RTDECL(int) RTFuzzCtxStateExport(RTFUZZCTX hFuzzCtx, void **ppvState, size_t *pcbState);
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| 122 |
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| 123 | /**
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| 124 | * Exports the given fuzzing context state to the given file.
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| 125 | *
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| 126 | * @returns IPRT status code.
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| 127 | * @param hFuzzCtx The fuzzing context to export.
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| 128 | * @param pszFilename The file to save the state to.
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| 129 | */
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| 130 | RTDECL(int) RTFuzzCtxStateExportToFile(RTFUZZCTX hFuzzCtx, const char *pszFilename);
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| 131 |
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| 132 | /**
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| 133 | * Adds a new seed to the input corpus of the given fuzzing context.
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| 134 | *
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| 135 | * @returns IPRT status code.
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| 136 | * @param hFuzzCtx The fuzzing context handle.
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| 137 | * @param pvInput The pointer to the input buffer.
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| 138 | * @param cbInput Size of the input buffer.
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| 139 | */
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| 140 | RTDECL(int) RTFuzzCtxCorpusInputAdd(RTFUZZCTX hFuzzCtx, const void *pvInput, size_t cbInput);
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| 141 |
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| 142 | /**
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| 143 | * Adds a new seed to the input corpus of the given fuzzing context from the given file.
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| 144 | *
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| 145 | * @returns IPRT status code.
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| 146 | * @param hFuzzCtx The fuzzing context handle.
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| 147 | * @param pszFilename The filename to load the seed from.
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| 148 | */
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| 149 | RTDECL(int) RTFuzzCtxCorpusInputAddFromFile(RTFUZZCTX hFuzzCtx, const char *pszFilename);
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| 150 |
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| 151 | /**
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| 152 | * Adds new seeds to the input corpus of the given fuzzing context from the given directory.
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| 153 | *
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| 154 | * Will only process regular files, i.e. ignores directories, symbolic links, devices, fifos
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| 155 | * and such.
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| 156 | *
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| 157 | * @returns IPRT status code.
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| 158 | * @param hFuzzCtx The fuzzing context handle.
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| 159 | * @param pszDirPath The directory to load seeds from.
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| 160 | */
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| 161 | RTDECL(int) RTFuzzCtxCorpusInputAddFromDirPath(RTFUZZCTX hFuzzCtx, const char *pszDirPath);
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| 162 |
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| 163 | /**
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| 164 | * Restricts the maximum input size to generate by the fuzzing context.
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| 165 | *
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| 166 | * @returns IPRT status code
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| 167 | * @param hFuzzCtx The fuzzing context handle.
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| 168 | * @param cbMax Maximum input size in bytes.
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| 169 | */
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| 170 | RTDECL(int) RTFuzzCtxCfgSetInputSeedMaximum(RTFUZZCTX hFuzzCtx, size_t cbMax);
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| 171 |
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| 172 | /**
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| 173 | * Returns the maximum input size of the given fuzzing context.
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| 174 | *
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| 175 | * @returns Maximum input size generated in bytes.
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| 176 | * @param hFuzzCtx The fuzzing context handle.
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| 177 | */
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| 178 | RTDECL(size_t) RTFuzzCtxCfgGetInputSeedMaximum(RTFUZZCTX hFuzzCtx);
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| 179 |
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| 180 | /**
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| 181 | * Sets flags controlling the behavior of the fuzzing context.
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| 182 | *
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| 183 | * @returns IPRT status code.
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| 184 | * @param hFuzzCtx The fuzzing context handle.
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| 185 | * @param fFlags Flags controlling the fuzzing context, RTFUZZCTX_F_XXX.
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| 186 | */
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| 187 | RTDECL(int) RTFuzzCtxCfgSetBehavioralFlags(RTFUZZCTX hFuzzCtx, uint32_t fFlags);
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| 188 |
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| 189 | /**
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| 190 | * Returns the current set behavioral flags for the given fuzzing context.
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| 191 | *
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| 192 | * @returns Behavioral flags of the given fuzzing context.
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| 193 | * @param hFuzzCtx The fuzzing context handle.
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| 194 | */
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| 195 | RTDECL(uint32_t) RTFuzzCfgGetBehavioralFlags(RTFUZZCTX hFuzzCtx);
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| 196 |
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| 197 | /**
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| 198 | * Sets the temporary directory used by the fuzzing context.
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| 199 | *
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| 200 | * @returns IPRT status code.
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| 201 | * @param hFuzzCtx The fuzzing context handle.
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| 202 | * @param pszPathTmp The directory for the temporary state.
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| 203 | */
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| 204 | RTDECL(int) RTFuzzCtxCfgSetTmpDirectory(RTFUZZCTX hFuzzCtx, const char *pszPathTmp);
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| 205 |
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| 206 | /**
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| 207 | * Returns the current temporary directory.
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| 208 | *
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| 209 | * @returns Current temporary directory.
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| 210 | * @param hFuzzCtx The fuzzing context handle.
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| 211 | */
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| 212 | RTDECL(const char *) RTFuzzCtxCfgGetTmpDirectory(RTFUZZCTX hFuzzCtx);
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| 213 |
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| 214 | /**
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| 215 | * Generates a new input from the given fuzzing context and returns it.
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| 216 | *
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| 217 | * @returns IPRT status code.
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| 218 | * @param hFuzzCtx The fuzzing context handle.
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| 219 | * @param phFuzzInput Where to store the handle to the fuzzed input on success.
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| 220 | */
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| 221 | RTDECL(int) RTFuzzCtxInputGenerate(RTFUZZCTX hFuzzCtx, PRTFUZZINPUT phFuzzInput);
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| 222 |
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| 223 |
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| 224 |
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| 225 | /**
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| 226 | * Retains a reference to the given fuzzing input handle.
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| 227 | *
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| 228 | * @returns New reference count on success.
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| 229 | * @param hFuzzInput The fuzzing input handle.
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| 230 | */
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| 231 | RTDECL(uint32_t) RTFuzzInputRetain(RTFUZZINPUT hFuzzInput);
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| 232 |
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| 233 | /**
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| 234 | * Releases a reference from the given fuzzing input handle, destroying it when reaaching 0.
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| 235 | *
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| 236 | * @returns New reference count on success, 0 if the fuzzing input got destroyed.
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| 237 | * @param hFuzzInput The fuzzing input handle.
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| 238 | */
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| 239 | RTDECL(uint32_t) RTFuzzInputRelease(RTFUZZINPUT hFuzzInput);
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| 240 |
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| 241 | /**
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| 242 | * Queries the data pointer and size of the given fuzzing input.
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| 243 | *
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| 244 | * @returns IPRT status code
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| 245 | * @param hFuzzInput The fuzzing input handle.
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| 246 | * @param ppv Where to store the pointer to the input data on success.
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| 247 | * @param pcb Where to store the size of the input data on success.
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| 248 | */
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| 249 | RTDECL(int) RTFuzzInputQueryData(RTFUZZINPUT hFuzzInput, void **ppv, size_t *pcb);
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| 250 |
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| 251 | /**
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| 252 | * Queries the string of the MD5 digest for the given fuzzed input.
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| 253 | *
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| 254 | * @returns IPRT status code.
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| 255 | * @retval VERR_BUFFER_OVERFLOW if the size of the string buffer is not sufficient.
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| 256 | * @param hFuzzInput The fuzzing input handle.
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| 257 | * @param pszDigest Where to store the digest string and a closing terminator.
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| 258 | * @param cchDigest Size of the string buffer in characters (including the zero terminator).
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| 259 | */
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| 260 | RTDECL(int) RTFuzzInputQueryDigestString(RTFUZZINPUT hFuzzInput, char *pszDigest, size_t cchDigest);
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| 261 |
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| 262 | /**
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| 263 | * Writes the given fuzzing input to the given file.
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| 264 | *
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| 265 | * @returns IPRT status code.
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| 266 | * @param hFuzzInput The fuzzing input handle.
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| 267 | * @param pszFilename The filename to store the input to.
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| 268 | */
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| 269 | RTDECL(int) RTFuzzInputWriteToFile(RTFUZZINPUT hFuzzInput, const char *pszFilename);
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| 270 |
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| 271 | /**
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| 272 | * Adds the given fuzzed input to the input corpus of the owning context.
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| 273 | *
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| 274 | * @returns IPRT status code.
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| 275 | * @retval VERR_ALREADY_EXISTS if the input exists already.
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| 276 | * @param hFuzzInput The fuzzing input handle.
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| 277 | */
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| 278 | RTDECL(int) RTFuzzInputAddToCtxCorpus(RTFUZZINPUT hFuzzInput);
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| 279 |
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| 280 | /**
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| 281 | * Removes the given fuzzed input from the input corpus of the owning context.
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| 282 | *
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| 283 | * @returns IPRT status code.
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| 284 | * @retval VERR_NOT_FOUND if the input is not part of the corpus.
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| 285 | * @param hFuzzInput The fuzzing input handle.
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| 286 | */
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| 287 | RTDECL(int) RTFuzzInputRemoveFromCtxCorpus(RTFUZZINPUT hFuzzInput);
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| 288 |
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| 289 |
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| 290 |
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| 291 | /**
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| 292 | * Creates a new fuzzing observer.
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| 293 | *
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| 294 | * @returns IPRT status code.
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| 295 | * @param phFuzzObs Where to store the fuzzing observer handle on success.
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| 296 | */
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| 297 | RTDECL(int) RTFuzzObsCreate(PRTFUZZOBS phFuzzObs);
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| 298 |
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| 299 | /**
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| 300 | * Destroys a previously created fuzzing observer.
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| 301 | *
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| 302 | * @returns IPRT status code.
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| 303 | * @param hFuzzObs The fuzzing observer handle.
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| 304 | */
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| 305 | RTDECL(int) RTFuzzObsDestroy(RTFUZZOBS hFuzzObs);
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| 306 |
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| 307 | /**
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| 308 | * Queries the internal fuzzing context of the given observer.
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| 309 | *
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| 310 | * @returns IPRT status code.
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| 311 | * @param hFuzzObs The fuzzing observer handle.
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| 312 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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| 313 | *
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| 314 | * @note The fuzzing context handle should be released with RTFuzzCtxRelease() when not used anymore.
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| 315 | */
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| 316 | RTDECL(int) RTFuzzObsQueryCtx(RTFUZZOBS hFuzzObs, PRTFUZZCTX phFuzzCtx);
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| 317 |
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| 318 | /**
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| 319 | * Sets the temp directory for the given fuzzing observer.
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| 320 | *
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| 321 | * @returns IPRT status code.
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| 322 | * @param hFuzzObs The fuzzing observer handle.
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| 323 | * @param pszTmp The temp directory path.
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| 324 | */
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| 325 | RTDECL(int) RTFuzzObsSetTmpDirectory(RTFUZZOBS hFuzzObs, const char *pszTmp);
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| 326 |
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| 327 | /**
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| 328 | * Sets the binary to run for each fuzzed input.
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| 329 | *
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| 330 | * @returns IPRT status code.
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| 331 | * @param hFuzzObs The fuzzing observer handle.
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| 332 | * @param pszBinary The binary path.
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| 333 | * @param fFlags Flags controlling execution of the binary, RTFUZZ_OBS_BINARY_F_XXX.
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| 334 | */
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| 335 | RTDECL(int) RTFuzzObsSetTestBinary(RTFUZZOBS hFuzzObs, const char *pszBinary, uint32_t fFlags);
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| 336 |
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| 337 | /** @name RTFUZZ_OBS_BINARY_F_XXX
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| 338 | * @{ */
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| 339 | /** The tested binary requires a real file to read from and doesn't support stdin. */
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| 340 | #define RTFUZZ_OBS_BINARY_F_INPUT_FILE RT_BIT_32(0)
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| 341 | /** @} */
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| 342 |
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| 343 | /**
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| 344 | * Sets additional arguments to run the binary with.
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| 345 | *
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| 346 | * @returns IPRT status code.
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| 347 | * @param hFuzzObs The fuzzing observer handle.
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| 348 | * @param papszArgs Pointer to the array of arguments.
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| 349 | * @param cArgs Number of arguments.
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| 350 | */
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| 351 | RTDECL(int) RTFuzzObsSetTestBinaryArgs(RTFUZZOBS hFuzzObs, const char * const *papszArgs, unsigned cArgs);
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| 352 |
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| 353 | /**
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| 354 | * Starts fuzzing the set binary.
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| 355 | *
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| 356 | * @returns IPRT status code.
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| 357 | * @param hFuzzObs The fuzzing observer handle.
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| 358 | * @param cProcs Number of processes to run simulteanously,
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| 359 | * 0 will create as manny processes as there are CPUs available.
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| 360 | */
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| 361 | RTDECL(int) RTFuzzObsExecStart(RTFUZZOBS hFuzzObs, uint32_t cProcs);
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| 362 |
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| 363 | /**
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| 364 | * Stops the fuzzing process.
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| 365 | *
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| 366 | * @returns IPRT status code.
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| 367 | * @param hFuzzObs The fuzzing observer handle.
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| 368 | */
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| 369 | RTDECL(int) RTFuzzObsExecStop(RTFUZZOBS hFuzzObs);
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| 370 |
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| 371 |
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| 372 | /**
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| 373 | * A fuzzing master program.
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| 374 | *
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| 375 | * @returns Program exit code.
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| 376 | *
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| 377 | * @param cArgs The number of arguments.
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| 378 | * @param papszArgs The argument vector. (Note that this may be
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| 379 | * reordered, so the memory must be writable.)
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| 380 | */
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| 381 | RTR3DECL(RTEXITCODE) RTFuzzCmdMaster(unsigned cArgs, char **papszArgs);
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| 382 |
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| 383 | /** @} */
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| 384 |
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| 385 | RT_C_DECLS_END
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| 386 |
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| 387 | #endif
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| 388 |
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