| 1 | /** @file
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| 2 | * IPRT - Kernel module.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2017-2020 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_INCLUDED_krnlmod_h
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| 27 | #define IPRT_INCLUDED_krnlmod_h
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| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 29 | # pragma once
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| 30 | #endif
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| 31 |
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| 32 | #include <iprt/cdefs.h>
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| 33 | #include <iprt/types.h>
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| 34 |
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| 35 |
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| 36 | RT_C_DECLS_BEGIN
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| 37 |
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| 38 | /** @defgroup grp_rt_kmod RTKrnlMod - Kernel module/driver userspace side API.
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| 39 | * @ingroup grp_rt
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| 40 | * @{
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| 41 | */
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| 42 |
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| 43 | /**
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| 44 | * Checks whether the given kernel module was loaded.
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| 45 | *
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| 46 | * @returns IPRT status code.
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| 47 | * @param pszName The driver name to check.
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| 48 | * @param pfLoaded Where to store the flag whether the module is loaded on success.
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| 49 | */
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| 50 | RTDECL(int) RTKrnlModQueryLoaded(const char *pszName, bool *pfLoaded);
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| 51 |
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| 52 | /**
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| 53 | * Returns the kernel module information handle for the given loaded kernel module.
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| 54 | *
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| 55 | * @returns IPRT status code.
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| 56 | * @retval VERR_NOT_FOUND if the kernel driver is not loaded.
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| 57 | * @param pszName The driver name.
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| 58 | * @param phKrnlModInfo Where to store the handle to the kernel module information record.
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| 59 | */
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| 60 | RTDECL(int) RTKrnlModLoadedQueryInfo(const char *pszName, PRTKRNLMODINFO phKrnlModInfo);
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| 61 |
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| 62 | /**
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| 63 | * Returns the number of kernel modules loaded on the host system.
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| 64 | *
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| 65 | * @returns Number of kernel modules loaded.
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| 66 | */
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| 67 | RTDECL(uint32_t) RTKrnlModLoadedGetCount(void);
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| 68 |
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| 69 | /**
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| 70 | * Returns all loaded kernel modules on the host.
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| 71 | *
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| 72 | * @returns IPRT status code.
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| 73 | * @retval VERR_BUFFER_OVERFLOW if there are not enough entries in the passed handle array.
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| 74 | * The required number of entries will be returned in pcEntries.
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| 75 | * @param pahKrnlModInfo Where to store the handles to the kernel module information records
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| 76 | * on success.
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| 77 | * @param cEntriesMax Maximum number of entries fitting in the given array.
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| 78 | * @param pcEntries Where to store the number of entries used/required.
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| 79 | */
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| 80 | RTDECL(int) RTKrnlModLoadedQueryInfoAll(PRTKRNLMODINFO pahKrnlModInfo, uint32_t cEntriesMax,
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| 81 | uint32_t *pcEntries);
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| 82 |
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| 83 | /**
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| 84 | * Retains the given kernel module information record handle.
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| 85 | *
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| 86 | * @returns New reference count.
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| 87 | * @param hKrnlModInfo The kernel module information record handle.
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| 88 | */
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| 89 | RTDECL(uint32_t) RTKrnlModInfoRetain(RTKRNLMODINFO hKrnlModInfo);
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| 90 |
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| 91 | /**
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| 92 | * Releases the given kernel module information record handle.
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| 93 | *
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| 94 | * @returns New reference count, on 0 the handle is destroyed.
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| 95 | * @param hKrnlModInfo The kernel module information record handle.
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| 96 | */
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| 97 | RTDECL(uint32_t) RTKrnlModInfoRelease(RTKRNLMODINFO hKrnlModInfo);
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| 98 |
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| 99 | /**
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| 100 | * Returns the number of references held onto the kernel module by other
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| 101 | * drivers or userspace clients.
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| 102 | *
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| 103 | * @returns Number of references held on the kernel module.
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| 104 | * @param hKrnlModInfo The kernel module information record handle.
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| 105 | */
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| 106 | RTDECL(uint32_t) RTKrnlModInfoGetRefCnt(RTKRNLMODINFO hKrnlModInfo);
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| 107 |
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| 108 | /**
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| 109 | * Returns the name of the kernel module.
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| 110 | *
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| 111 | * @returns Pointer to the kernel module name.
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| 112 | * @param hKrnlModInfo The kernel module information record handle.
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| 113 | */
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| 114 | RTDECL(const char *) RTKrnlModInfoGetName(RTKRNLMODINFO hKrnlModInfo);
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| 115 |
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| 116 | /**
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| 117 | * Returns the filepath of the kernel module.
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| 118 | *
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| 119 | * @returns Pointer to the kernel module path.
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| 120 | * @param hKrnlModInfo The kernel module information record handle.
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| 121 | */
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| 122 | RTDECL(const char *) RTKrnlModInfoGetFilePath(RTKRNLMODINFO hKrnlModInfo);
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| 123 |
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| 124 | /**
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| 125 | * Returns the size of the kernel module.
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| 126 | *
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| 127 | * @returns Size of the kernel module in bytes.
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| 128 | * @param hKrnlModInfo The kernel module information record handle.
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| 129 | */
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| 130 | RTDECL(size_t) RTKrnlModInfoGetSize(RTKRNLMODINFO hKrnlModInfo);
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| 131 |
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| 132 | /**
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| 133 | * Returns the load address of the kernel module.
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| 134 | *
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| 135 | * @returns Load address of the kernel module.
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| 136 | * @param hKrnlModInfo The kernel module information record handle.
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| 137 | */
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| 138 | RTDECL(RTR0UINTPTR) RTKrnlModInfoGetLoadAddr(RTKRNLMODINFO hKrnlModInfo);
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| 139 |
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| 140 | /**
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| 141 | * Query the kernel information record for a referencing kernel module of the
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| 142 | * given record.
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| 143 | *
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| 144 | * @returns IPRT status code.
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| 145 | * @param hKrnlModInfo The kernel module information record handle.
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| 146 | * @param idx Referencing kernel module index (< reference count
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| 147 | * as retrieved by RTKrnlModInfoGetRefCnt() ).
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| 148 | * @param phKrnlModInfoRef Where to store the handle to the referencing kernel module
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| 149 | * information record.
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| 150 | */
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| 151 | RTDECL(int) RTKrnlModInfoQueryRefModInfo(RTKRNLMODINFO hKrnlModInfo, uint32_t idx,
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| 152 | PRTKRNLMODINFO phKrnlModInfoRef);
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| 153 |
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| 154 | /** @} */
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| 155 |
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| 156 | RT_C_DECLS_END
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| 157 |
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| 158 | #endif /* !IPRT_INCLUDED_krnlmod_h */
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| 159 |
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