| 1 | /* $Id: ldrNative-posix.cpp 46593 2013-06-17 14:32:51Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - Binary Image Loader, POSIX native.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2010 Oracle Corporation
|
|---|
| 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 (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | /*******************************************************************************
|
|---|
| 28 | * Header Files *
|
|---|
| 29 | *******************************************************************************/
|
|---|
| 30 | #define LOG_GROUP RTLOGGROUP_LDR
|
|---|
| 31 | #include <dlfcn.h>
|
|---|
| 32 |
|
|---|
| 33 | #include <iprt/ldr.h>
|
|---|
| 34 | #include <iprt/assert.h>
|
|---|
| 35 | #include <iprt/path.h>
|
|---|
| 36 | #include <iprt/alloca.h>
|
|---|
| 37 | #include <iprt/string.h>
|
|---|
| 38 | #include <iprt/err.h>
|
|---|
| 39 | #include <iprt/log.h>
|
|---|
| 40 | #include "internal/ldr.h"
|
|---|
| 41 |
|
|---|
| 42 |
|
|---|
| 43 | int rtldrNativeLoad(const char *pszFilename, uintptr_t *phHandle, uint32_t fFlags, PRTERRINFO pErrInfo)
|
|---|
| 44 | {
|
|---|
| 45 | /*
|
|---|
| 46 | * Do we need to add an extension?
|
|---|
| 47 | */
|
|---|
| 48 | if (!RTPathHaveExt(pszFilename))
|
|---|
| 49 | {
|
|---|
| 50 | #if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
|
|---|
| 51 | static const char s_szSuff[] = ".DLL";
|
|---|
| 52 | #elif defined(RT_OS_L4)
|
|---|
| 53 | static const char s_szSuff[] = ".s.so";
|
|---|
| 54 | #elif defined(RT_OS_DARWIN)
|
|---|
| 55 | static const char s_szSuff[] = ".dylib";
|
|---|
| 56 | #else
|
|---|
| 57 | static const char s_szSuff[] = ".so";
|
|---|
| 58 | #endif
|
|---|
| 59 | size_t cch = strlen(pszFilename);
|
|---|
| 60 | char *psz = (char *)alloca(cch + sizeof(s_szSuff));
|
|---|
| 61 | if (!psz)
|
|---|
| 62 | return RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "alloca failed");
|
|---|
| 63 | memcpy(psz, pszFilename, cch);
|
|---|
| 64 | memcpy(psz + cch, s_szSuff, sizeof(s_szSuff));
|
|---|
| 65 | pszFilename = psz;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | /*
|
|---|
| 69 | * Attempt load.
|
|---|
| 70 | */
|
|---|
| 71 | int fFlagsNative = RTLD_NOW;
|
|---|
| 72 | if (fFlags & RTLDRLOAD_FLAGS_GLOBAL)
|
|---|
| 73 | fFlagsNative |= RTLD_GLOBAL;
|
|---|
| 74 | else
|
|---|
| 75 | fFlagsNative |= RTLD_LOCAL;
|
|---|
| 76 | void *pvMod = dlopen(pszFilename, fFlagsNative);
|
|---|
| 77 | if (pvMod)
|
|---|
| 78 | {
|
|---|
| 79 | *phHandle = (uintptr_t)pvMod;
|
|---|
| 80 | return VINF_SUCCESS;
|
|---|
| 81 | }
|
|---|
| 82 |
|
|---|
| 83 | const char *pszDlError = dlerror();
|
|---|
| 84 | RTErrInfoSet(pErrInfo, VERR_FILE_NOT_FOUND, pszDlError);
|
|---|
| 85 | LogRel(("rtldrNativeLoad: dlopen('%s', RTLD_NOW | RTLD_LOCAL) failed: %s\n", pszFilename, pszDlError));
|
|---|
| 86 | return VERR_FILE_NOT_FOUND;
|
|---|
| 87 | }
|
|---|
| 88 |
|
|---|
| 89 |
|
|---|
| 90 | DECLCALLBACK(int) rtldrNativeGetSymbol(PRTLDRMODINTERNAL pMod, const char *pszSymbol, void **ppvValue)
|
|---|
| 91 | {
|
|---|
| 92 | PRTLDRMODNATIVE pModNative = (PRTLDRMODNATIVE)pMod;
|
|---|
| 93 | #ifdef RT_OS_OS2
|
|---|
| 94 | /* Prefix the symbol with an underscore (assuming __cdecl/gcc-default). */
|
|---|
| 95 | size_t cch = strlen(pszSymbol);
|
|---|
| 96 | char *psz = (char *)alloca(cch + 2);
|
|---|
| 97 | psz[0] = '_';
|
|---|
| 98 | memcpy(psz + 1, pszSymbol, cch + 1);
|
|---|
| 99 | pszSymbol = psz;
|
|---|
| 100 | #endif
|
|---|
| 101 | *ppvValue = dlsym((void *)pModNative->hNative, pszSymbol);
|
|---|
| 102 | if (*ppvValue)
|
|---|
| 103 | return VINF_SUCCESS;
|
|---|
| 104 | return VERR_SYMBOL_NOT_FOUND;
|
|---|
| 105 | }
|
|---|
| 106 |
|
|---|
| 107 |
|
|---|
| 108 | DECLCALLBACK(int) rtldrNativeClose(PRTLDRMODINTERNAL pMod)
|
|---|
| 109 | {
|
|---|
| 110 | PRTLDRMODNATIVE pModNative = (PRTLDRMODNATIVE)pMod;
|
|---|
| 111 | if ( (pModNative->fFlags & RTLDRLOAD_FLAGS_NO_UNLOAD)
|
|---|
| 112 | || !dlclose((void *)pModNative->hNative))
|
|---|
| 113 | {
|
|---|
| 114 | pModNative->hNative = (uintptr_t)0;
|
|---|
| 115 | return VINF_SUCCESS;
|
|---|
| 116 | }
|
|---|
| 117 | Log(("rtldrNativeFree: dlclose(%p) failed: %s\n", pModNative->hNative, dlerror()));
|
|---|
| 118 | return VERR_GENERAL_FAILURE;
|
|---|
| 119 | }
|
|---|
| 120 |
|
|---|
| 121 |
|
|---|
| 122 | int rtldrNativeLoadSystem(const char *pszFilename, const char *pszExt, uint32_t fFlags, PRTLDRMOD phLdrMod)
|
|---|
| 123 | {
|
|---|
| 124 | /** @todo implement this in some sensible fashion. */
|
|---|
| 125 | return VERR_NOT_SUPPORTED;
|
|---|
| 126 | }
|
|---|
| 127 |
|
|---|
