ldrEx.cpp@ 8155

Last change on this file since 8155 was 8155, checked in by vboxsync, 17 years ago
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1	/* $Id: ldrEx.cpp 8155 2008-04-18 15:16:47Z vboxsync $ */
2	/** @file
3	* innotek Portable Runtime - Binary Image Loader, Extended Features.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#define LOG_GROUP RTLOGGROUP_LDR
36	#include <iprt/ldr.h>
37	#include <iprt/alloc.h>
38	#include <iprt/assert.h>
39	#include <iprt/log.h>
40	#include <iprt/string.h>
41	#include <iprt/err.h>
42	#include "internal/ldr.h"
43	#include "internal/ldrMZ.h"
44
45
46	/**
47	* Open part with reader.
48	*
49	* @returns iprt status code.
50	* @param pReader The loader reader instance which will provide the raw image bits.
51	* @param phMod Where to store the handle.
52	*/
53	int rtldrOpenWithReader(PRTLDRREADER pReader, PRTLDRMOD phMod)
54	{
55	/*
56	* Read and verify the file signature.
57	*/
58	union
59	{
60	char ach[4];
61	uint16_t au16[2];
62	uint32_t u32;
63	} uSign;
64	int rc = pReader->pfnRead(pReader, &uSign, sizeof(uSign), 0);
65	if (RT_FAILURE(rc))
66	return rc;
67	#ifndef LDR_WITH_KLDR
68	if ( uSign.au16[0] != IMAGE_DOS_SIGNATURE
69	&& uSign.u32 != IMAGE_NT_SIGNATURE
70	&& uSign.u32 != IMAGE_ELF_SIGNATURE
71	&& uSign.au16[0] != IMAGE_LX_SIGNATURE)
72	{
73	Log(("rtldrOpenWithReader: %s: unknown magic %#x / '%.4s\n", pReader->pfnLogName(pReader), uSign.u32, &uSign.ach[0]));
74	return VERR_INVALID_EXE_SIGNATURE;
75	}
76	#endif
77	uint32_t offHdr = 0;
78	if (uSign.au16[0] == IMAGE_DOS_SIGNATURE)
79	{
80	rc = pReader->pfnRead(pReader, &offHdr, sizeof(offHdr), RT_OFFSETOF(IMAGE_DOS_HEADER, e_lfanew));
81	if (RT_FAILURE(rc))
82	return rc;
83
84	if (offHdr <= sizeof(IMAGE_DOS_HEADER))
85	{
86	Log(("rtldrOpenWithReader: %s: no new header / invalid offset %#RX32\n", pReader->pfnLogName(pReader), offHdr));
87	return VERR_INVALID_EXE_SIGNATURE;
88	}
89	rc = pReader->pfnRead(pReader, &uSign, sizeof(uSign), offHdr);
90	if (RT_FAILURE(rc))
91	return rc;
92	if ( uSign.u32 != IMAGE_NT_SIGNATURE
93	&& uSign.au16[0] != IMAGE_LX_SIGNATURE
94	&& uSign.au16[0] != IMAGE_LE_SIGNATURE
95	&& uSign.au16[0] != IMAGE_NE_SIGNATURE)
96	{
97	Log(("rtldrOpenWithReader: %s: unknown new magic %#x / '%.4s\n", pReader->pfnLogName(pReader), uSign.u32, &uSign.ach[0]));
98	return VERR_INVALID_EXE_SIGNATURE;
99	}
100	}
101
102	/*
103	* Create image intepreter instance depending on the signature.
104	*/
105	if (uSign.u32 == IMAGE_NT_SIGNATURE)
106	#ifdef LDR_WITH_PE
107	rc = rtldrPEOpen(pReader, offHdr, phMod);
108	#else
109	rc = VERR_PE_EXE_NOT_SUPPORTED;
110	#endif
111	else if (uSign.u32 == IMAGE_ELF_SIGNATURE)
112	#if defined(LDR_WITH_ELF)
113	rc = rtldrELFOpen(pReader, phMod);
114	#else
115	rc = VERR_ELF_EXE_NOT_SUPPORTED;
116	#endif
117	else if (uSign.au16[0] == IMAGE_LX_SIGNATURE)
118	#ifdef LDR_WITH_LX
119	rc = rtldrLXOpen(pReader, offHdr, phMod);
120	#else
121	rc = VERR_LX_EXE_NOT_SUPPORTED;
122	#endif
123	else if (uSign.au16[0] == IMAGE_LE_SIGNATURE)
124	#ifdef LDR_WITH_LE
125	rc = rtldrLEOpen(pReader, phMod);
126	#else
127	rc = VERR_LE_EXE_NOT_SUPPORTED;
128	#endif
129	else if (uSign.au16[0] == IMAGE_NE_SIGNATURE)
130	#ifdef LDR_WITH_NE
131	rc = rtldrNEOpen(pReader, phMod);
132	#else
133	rc = VERR_NE_EXE_NOT_SUPPORTED;
134	#endif
135	else if (uSign.au16[0] == IMAGE_DOS_SIGNATURE)
136	#ifdef LDR_WITH_MZ
137	rc = rtldrMZOpen(pReader, phMod);
138	#else
139	rc = VERR_MZ_EXE_NOT_SUPPORTED;
140	#endif
141	else if (/* uSign.u32 == IMAGE_AOUT_A_SIGNATURE
142	\|\| uSign.u32 == IMAGE_AOUT_Z_SIGNATURE/ /* @todo find the aout magics in emx or binutils. */
143	0)
144	#ifdef LDR_WITH_AOUT
145	rc = rtldrAOUTOpen(pReader, phMod);
146	#else
147	rc = VERR_AOUT_EXE_NOT_SUPPORTED;
148	#endif
149	else
150	{
151	#ifndef LDR_WITH_KLDR
152	Log(("rtldrOpenWithReader: %s: the format isn't implemented %#x / '%.4s\n", pReader->pfnLogName(pReader), uSign.u32, &uSign.ach[0]));
153	#endif
154	rc = VERR_INVALID_EXE_SIGNATURE;
155	}
156
157	#ifdef LDR_WITH_KLDR
158	/* Try kLdr if it's a format we don't recognize. */
159	if (rc <= VERR_INVALID_EXE_SIGNATURE && rc > VERR_BAD_EXE_FORMAT)
160	rc = rtldrkLdrOpen(pReader, phMod);
161	#endif
162
163	LogFlow(("rtldrOpenWithReader: %s: returns %Rrc phMod=%p\n", pReader->pfnLogName(pReader), rc, phMod));
164	return rc;
165	}
166
167
168	/**
169	* Gets the size of the loaded image.
170	* This is only supported for modules which has been opened using RTLdrOpen() and RTLdrOpenBits().
171	*
172	* @returns image size (in bytes).
173	* @returns ~(size_t)0 on if not opened by RTLdrOpen().
174	* @param hLdrMod Handle to the loader module.
175	* @remark Not supported for RTLdrLoad() images.
176	*/
177	RTDECL(size_t) RTLdrSize(RTLDRMOD hLdrMod)
178	{
179	LogFlow(("RTLdrSize: hLdrMod=%RTldrm\n", hLdrMod));
180
181	/*
182	* Validate input.
183	*/
184	AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), ~(size_t)0);
185	PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
186	AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), ~(size_t)0);
187
188	/*
189	* Do it.
190	*/
191	size_t cb = pMod->pOps->pfnGetImageSize(pMod);
192	LogFlow(("RTLdrSize: returns %zu\n", cb));
193	return cb;
194	}
195
196
197	/**
198	* Loads the image into a buffer provided by the user and applies fixups
199	* for the given base address.
200	*
201	* @returns iprt status code.
202	* @param hLdrMod The load module handle.
203	* @param pvBits Where to put the bits.
204	* Must be as large as RTLdrSize() suggests.
205	* @param BaseAddress The base address.
206	* @param pfnGetImport Callback function for resolving imports one by one.
207	* @param pvUser User argument for the callback.
208	* @remark Not supported for RTLdrLoad() images.
209	*/
210	RTDECL(int) RTLdrGetBits(RTLDRMOD hLdrMod, void pvBits, RTUINTPTR BaseAddress, PFNRTLDRIMPORT pfnGetImport, void pvUser)
211	{
212	LogFlow(("RTLdrGetBits: hLdrMod=%RTldrm pvBits=%p BaseAddress=%RTptr pfnGetImport=%p pvUser=%p\n",
213	hLdrMod, pvBits, BaseAddress, pfnGetImport, pvUser));
214
215	/*
216	* Validate input.
217	*/
218	AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
219	AssertMsgReturn(VALID_PTR(pvBits), ("pvBits=%p\n", pvBits), VERR_INVALID_PARAMETER);
220	AssertMsgReturn(VALID_PTR(pfnGetImport), ("pfnGetImport=%p\n", pfnGetImport), VERR_INVALID_PARAMETER);
221	PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
222	AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), VERR_WRONG_ORDER);
223
224	/*
225	* Do it.
226	*/
227	int rc = pMod->pOps->pfnGetBits(pMod, pvBits, BaseAddress, pfnGetImport, pvUser);
228	LogFlow(("RTLdrGetBits: returns %Rrc\n",rc));
229	return rc;
230	}
231
232
233	/**
234	* Relocates bits after getting them.
235	* Useful for code which moves around a bit.
236	*
237	* @returns iprt status code.
238	* @param hLdrMod The loader module handle.
239	* @param pvBits Where the image bits are.
240	* Must've been passed to RTLdrGetBits().
241	* @param NewBaseAddress The new base address.
242	* @param OldBaseAddress The old base address.
243	* @param pfnGetImport Callback function for resolving imports one by one.
244	* @param pvUser User argument for the callback.
245	* @remark Not supported for RTLdrLoad() images.
246	*/
247	RTDECL(int) RTLdrRelocate(RTLDRMOD hLdrMod, void *pvBits, RTUINTPTR NewBaseAddress, RTUINTPTR OldBaseAddress,
248	PFNRTLDRIMPORT pfnGetImport, void *pvUser)
249	{
250	LogFlow(("RTLdrRelocate: hLdrMod=%RTldrm pvBits=%p NewBaseAddress=%RTptr OldBaseAddress=%RTptr pfnGetImport=%p pvUser=%p\n",
251	hLdrMod, pvBits, NewBaseAddress, OldBaseAddress, pfnGetImport, pvUser));
252
253	/*
254	* Validate input.
255	*/
256	AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
257	AssertMsgReturn(VALID_PTR(pvBits), ("pvBits=%p\n", pvBits), VERR_INVALID_PARAMETER);
258	AssertMsgReturn(VALID_PTR(pfnGetImport), ("pfnGetImport=%p\n", pfnGetImport), VERR_INVALID_PARAMETER);
259	PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
260	AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), VERR_WRONG_ORDER);
261
262	/*
263	* Do it.
264	*/
265	int rc = pMod->pOps->pfnRelocate(pMod, pvBits, NewBaseAddress, OldBaseAddress, pfnGetImport, pvUser);
266	LogFlow(("RTLdrRelocate: returns %Vrc\n", rc));
267	return rc;
268	}
269
270
271	/**
272	* Gets the address of a named exported symbol.
273	*
274	* This function differs from the plain one in that it can deal with
275	* both GC and HC address sizes, and that it can calculate the symbol
276	* value relative to any given base address.
277	*
278	* @returns iprt status code.
279	* @param hLdrMod The loader module handle.
280	* @param pvBits Optional pointer to the loaded image.
281	* Set this to NULL if no RTLdrGetBits() processed image bits are available.
282	* Not supported for RTLdrLoad() images and must be NULL.
283	* @param BaseAddress Image load address.
284	* Not supported for RTLdrLoad() images and must be 0.
285	* @param pszSymbol Symbol name.
286	* @param pValue Where to store the symbol value.
287	*/
288	RTDECL(int) RTLdrGetSymbolEx(RTLDRMOD hLdrMod, const void pvBits, RTUINTPTR BaseAddress, const char pszSymbol, RTUINTPTR *pValue)
289	{
290	LogFlow(("RTLdrGetSymbolEx: hLdrMod=%RTldrm pvBits=%p BaseAddress=%RTptr pszSymbol=%p:{%s} pValue\n",
291	hLdrMod, pvBits, BaseAddress, pszSymbol, pszSymbol, pValue));
292
293	/*
294	* Validate input.
295	*/
296	AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
297	AssertMsgReturn(!pvBits \|\| VALID_PTR(pvBits), ("pvBits=%p\n", pvBits), VERR_INVALID_PARAMETER);
298	AssertMsgReturn(pszSymbol, ("pszSymbol=%p\n", pszSymbol), VERR_INVALID_PARAMETER);
299	AssertMsgReturn(VALID_PTR(pValue), ("pValue=%p\n", pvBits), VERR_INVALID_PARAMETER);
300	PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
301	//AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), VERR_WRONG_ORDER);
302
303	/*
304	* Do it.
305	*/
306	int rc;
307	if (pMod->pOps->pfnGetSymbolEx)
308	rc = pMod->pOps->pfnGetSymbolEx(pMod, pvBits, BaseAddress, pszSymbol, pValue);
309	else if (!BaseAddress && !pvBits)
310	{
311	void *pvValue;
312	rc = pMod->pOps->pfnGetSymbol(pMod, pszSymbol, &pvValue);
313	if (RT_SUCCESS(rc))
314	*pValue = (uintptr_t)pvValue;
315	}
316	else
317	AssertMsgFailedReturn(("BaseAddress=%RTptr pvBits=%p\n", BaseAddress, pvBits), VERR_INVALID_FUNCTION);
318	LogFlow(("RTLdrGetSymbolEx: returns %Rrc pValue=%p\n", rc, pValue));
319	return rc;
320	}
321
322
323	/**
324	* Enumerates all symbols in a module.
325	*
326	* @returns iprt status code.
327	* @param hLdrMod The loader module handle.
328	* @param fFlags Flags indicating what to return and such.
329	* @param pvBits Optional pointer to the loaded image.
330	* Set this to NULL if no RTLdrGetBits() processed image bits are available.
331	* @param BaseAddress Image load address.
332	* @param pfnCallback Callback function.
333	* @param pvUser User argument for the callback.
334	* @remark Not supported for RTLdrLoad() images.
335	*/
336	RTDECL(int) RTLdrEnumSymbols(RTLDRMOD hLdrMod, unsigned fFlags, const void pvBits, RTUINTPTR BaseAddress, PFNRTLDRENUMSYMS pfnCallback, void pvUser)
337	{
338	LogFlow(("RTLdrEnumSymbols: hLdrMod=%RTldrm fFlags=%#x pvBit=%p BaseAddress=%RTptr pfnCallback=%p pvUser=%p\n",
339	hLdrMod, fFlags, pvBits, BaseAddress, pfnCallback, pvUser));
340
341	/*
342	* Validate input.
343	*/
344	AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
345	AssertMsgReturn(!pvBits \|\| VALID_PTR(pvBits), ("pvBits=%p\n", pvBits), VERR_INVALID_PARAMETER);
346	AssertMsgReturn(VALID_PTR(pfnCallback), ("pfnCallback=%p\n", pfnCallback), VERR_INVALID_PARAMETER);
347	PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
348	//AssertMsgReturn(pMod->eState == LDR_STATE_OPENED, ("eState=%d\n", pMod->eState), VERR_WRONG_ORDER);
349
350	/*
351	* Do it.
352	*/
353	int rc = pMod->pOps->pfnEnumSymbols(pMod, fFlags, pvBits, BaseAddress, pfnCallback, pvUser);
354	LogFlow(("RTLdrEnumSymbols: returns %Rrc\n", rc));
355	return rc;
356	}
357

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source: vbox/trunk/src/VBox/Runtime/common/ldr/ldrEx.cpp@ 8155

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