| 1 | /* $Id: ldr.cpp 1 1970-01-01 00:00:00Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * InnoTek Portable Runtime - Binary Image Loader.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006 InnoTek Systemberatung GmbH
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License as published by the Free Software Foundation,
|
|---|
| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
|
|---|
| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
|
|---|
| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * If you received this file as part of a commercial VirtualBox
|
|---|
| 18 | * distribution, then only the terms of your commercial VirtualBox
|
|---|
| 19 | * license agreement apply instead of the previous paragraph.
|
|---|
| 20 | */
|
|---|
| 21 |
|
|---|
| 22 |
|
|---|
| 23 | /*******************************************************************************
|
|---|
| 24 | * Header Files *
|
|---|
| 25 | *******************************************************************************/
|
|---|
| 26 | #define LOG_GROUP RTLOGGROUP_LDR
|
|---|
| 27 | #include <iprt/ldr.h>
|
|---|
| 28 | #include <iprt/alloc.h>
|
|---|
| 29 | #include <iprt/string.h>
|
|---|
| 30 | #include <iprt/assert.h>
|
|---|
| 31 | #include <iprt/err.h>
|
|---|
| 32 | #include <iprt/log.h>
|
|---|
| 33 | #include "internal/ldr.h"
|
|---|
| 34 |
|
|---|
| 35 |
|
|---|
| 36 | /*******************************************************************************
|
|---|
| 37 | * Structures and Typedefs *
|
|---|
| 38 | *******************************************************************************/
|
|---|
| 39 | typedef struct RTLDRREADERFILE
|
|---|
| 40 | {
|
|---|
| 41 | /** The core. */
|
|---|
| 42 | RTLDRREADER Core;
|
|---|
| 43 | /** The file. */
|
|---|
| 44 | RTFILE File;
|
|---|
| 45 | /** The file size. */
|
|---|
| 46 | RTFOFF cbFile;
|
|---|
| 47 | /** The current offset. */
|
|---|
| 48 | RTFOFF off;
|
|---|
| 49 | /** The filename (variable size). */
|
|---|
| 50 | char szFilename[1];
|
|---|
| 51 | } RTLDRREADERFILE, *PRTLDRREADERFILE;
|
|---|
| 52 |
|
|---|
| 53 |
|
|---|
| 54 | /*******************************************************************************
|
|---|
| 55 | * Internal Functions *
|
|---|
| 56 | *******************************************************************************/
|
|---|
| 57 |
|
|---|
| 58 |
|
|---|
| 59 | /**
|
|---|
| 60 | * Gets the address of a named exported symbol.
|
|---|
| 61 | *
|
|---|
| 62 | * @returns iprt status code.
|
|---|
| 63 | * @param hLdrMod The loader module handle.
|
|---|
| 64 | * @param pszSymbol Symbol name.
|
|---|
| 65 | * @param ppvValue Where to store the symbol value. Note that this is restricted to the
|
|---|
| 66 | * pointer size used on the host!
|
|---|
| 67 | */
|
|---|
| 68 | RTDECL(int) RTLdrGetSymbol(RTLDRMOD hLdrMod, const char *pszSymbol, void **ppvValue)
|
|---|
| 69 | {
|
|---|
| 70 | LogFlow(("RTLdrGetSymbol: hLdrMod=%RTldrm pszSymbol=%p:{%s} ppvValue=%p\n",
|
|---|
| 71 | hLdrMod, pszSymbol, pszSymbol, ppvValue));
|
|---|
| 72 | /*
|
|---|
| 73 | * Validate input.
|
|---|
| 74 | */
|
|---|
| 75 | AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
|
|---|
| 76 | AssertMsgReturn(pszSymbol, ("pszSymbol=%p\n", pszSymbol), VERR_INVALID_PARAMETER);
|
|---|
| 77 | AssertMsgReturn(VALID_PTR(ppvValue), ("ppvValue=%p\n", ppvValue), VERR_INVALID_PARAMETER);
|
|---|
| 78 | PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
|
|---|
| 79 | //AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), VERR_WRONG_ORDER);
|
|---|
| 80 |
|
|---|
| 81 | /*
|
|---|
| 82 | * Do it.
|
|---|
| 83 | */
|
|---|
| 84 | int rc;
|
|---|
| 85 | if (pMod->pOps->pfnGetSymbol)
|
|---|
| 86 | rc = pMod->pOps->pfnGetSymbol(pMod, pszSymbol, ppvValue);
|
|---|
| 87 | else
|
|---|
| 88 | {
|
|---|
| 89 | RTUINTPTR Value = 0;
|
|---|
| 90 | rc = pMod->pOps->pfnGetSymbolEx(pMod, NULL, 0, pszSymbol, &Value);
|
|---|
| 91 | if (RT_SUCCESS(rc))
|
|---|
| 92 | {
|
|---|
| 93 | *ppvValue = (void *)Value;
|
|---|
| 94 | if ((uintptr_t)*ppvValue != Value)
|
|---|
| 95 | rc = VERR_BUFFER_OVERFLOW;
|
|---|
| 96 | }
|
|---|
| 97 | }
|
|---|
| 98 | LogFlow(("RTLdrGetSymbol: return %Rrc *ppvValue=%p\n", rc, *ppvValue));
|
|---|
| 99 | return rc;
|
|---|
| 100 | }
|
|---|
| 101 |
|
|---|
| 102 |
|
|---|
| 103 | /**
|
|---|
| 104 | * Closes a loader module handle.
|
|---|
| 105 | *
|
|---|
| 106 | * The handle can be obtained using any of the RTLdrLoad(), RTLdrOpen()
|
|---|
| 107 | * and RTLdrOpenBits() functions.
|
|---|
| 108 | *
|
|---|
| 109 | * @returns iprt status code.
|
|---|
| 110 | * @param hLdrMod The loader module handle.
|
|---|
| 111 | */
|
|---|
| 112 | RTDECL(int) RTLdrClose(RTLDRMOD hLdrMod)
|
|---|
| 113 | {
|
|---|
| 114 | LogFlow(("RTLdrClose: hLdrMod=%RTldrm\n", hLdrMod));
|
|---|
| 115 |
|
|---|
| 116 | /*
|
|---|
| 117 | * Validate input.
|
|---|
| 118 | */
|
|---|
| 119 | AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
|
|---|
| 120 | PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
|
|---|
| 121 | //AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), VERR_WRONG_ORDER);
|
|---|
| 122 |
|
|---|
| 123 | /*
|
|---|
| 124 | * Do it.
|
|---|
| 125 | */
|
|---|
| 126 | int rc = pMod->pOps->pfnClose(pMod);
|
|---|
| 127 | AssertRC(rc);
|
|---|
| 128 | pMod->eState = LDR_STATE_INVALID;
|
|---|
| 129 | pMod->u32Magic++;
|
|---|
| 130 | RTMemFree(pMod);
|
|---|
| 131 |
|
|---|
| 132 | LogFlow(("RTLdrClose: returns VINF_SUCCESS\n"));
|
|---|
| 133 | return VINF_SUCCESS;
|
|---|
| 134 | }
|
|---|
| 135 |
|
|---|
