SUPLibLdr.cpp@ 100108

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1	/* $Id: SUPLibLdr.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* VirtualBox Support Library - Loader related bits.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#define LOG_GROUP LOG_GROUP_SUP
42	#include <VBox/sup.h>
43	#include <VBox/err.h>
44	#include <VBox/param.h>
45	#include <VBox/log.h>
46	#include <VBox/VBoxTpG.h>
47
48	#include <iprt/assert.h>
49	#include <iprt/alloc.h>
50	#include <iprt/alloca.h>
51	#include <iprt/ldr.h>
52	#include <iprt/asm.h>
53	#include <iprt/mp.h>
54	#include <iprt/cpuset.h>
55	#include <iprt/thread.h>
56	#include <iprt/process.h>
57	#include <iprt/path.h>
58	#include <iprt/string.h>
59	#include <iprt/env.h>
60	#include <iprt/rand.h>
61	#include <iprt/x86.h>
62
63	#include "SUPDrvIOC.h"
64	#include "SUPLibInternal.h"
65
66
67	/*********************************************************************************************************************************
68	* Defined Constants And Macros *
69	*********************************************************************************************************************************/
70	/** R0 VMM module name. */
71	#define VMMR0_NAME "VMMR0"
72
73
74	/*********************************************************************************************************************************
75	* Structures and Typedefs *
76	*********************************************************************************************************************************/
77	typedef DECLCALLBACKTYPE(int, FNCALLVMMR0,(PVMR0 pVMR0, unsigned uOperation, void *pvArg));
78	typedef FNCALLVMMR0 *PFNCALLVMMR0;
79
80
81	/*********************************************************************************************************************************
82	* Global Variables *
83	*********************************************************************************************************************************/
84	/** VMMR0 Load Address. */
85	static RTR0PTR g_pvVMMR0 = NIL_RTR0PTR;
86
87
88	/*********************************************************************************************************************************
89	* Internal Functions *
90	*********************************************************************************************************************************/
91	static int supLoadModule(const char pszFilename, const char pszModule, const char *pszSrvReqHandler,
92	PRTERRINFO pErrInfo, void **ppvImageBase);
93	static DECLCALLBACK(int) supLoadModuleResolveImport(RTLDRMOD hLdrMod, const char pszModule, const char pszSymbol,
94	unsigned uSymbol, RTUINTPTR pValue, void pvUser);
95
96
97	SUPR3DECL(int) SUPR3LoadModule(const char pszFilename, const char pszModule, void **ppvImageBase, PRTERRINFO pErrInfo)
98	{
99	/*
100	* Check that the module can be trusted.
101	*/
102	int rc = SUPR3HardenedVerifyPlugIn(pszFilename, pErrInfo);
103	if (RT_SUCCESS(rc))
104	{
105	rc = supLoadModule(pszFilename, pszModule, NULL, pErrInfo, ppvImageBase);
106	if (RT_FAILURE(rc) && !RTErrInfoIsSet(pErrInfo))
107	RTErrInfoSetF(pErrInfo, rc, "SUPR3LoadModule: supLoadModule returned %Rrc", rc);
108	}
109	return rc;
110	}
111
112
113	SUPR3DECL(int) SUPR3LoadServiceModule(const char pszFilename, const char pszModule,
114	const char pszSrvReqHandler, void *ppvImageBase)
115	{
116	AssertPtrReturn(pszSrvReqHandler, VERR_INVALID_PARAMETER);
117
118	/*
119	* Check that the module can be trusted.
120	*/
121	int rc = SUPR3HardenedVerifyPlugIn(pszFilename, NULL /pErrInfo/);
122	if (RT_SUCCESS(rc))
123	rc = supLoadModule(pszFilename, pszModule, pszSrvReqHandler, NULL /pErrInfo/, ppvImageBase);
124	else
125	LogRel(("SUPR3LoadServiceModule: Verification of \"%s\" failed, rc=%Rrc\n", pszFilename, rc));
126	return rc;
127	}
128
129
130	/**
131	* Argument package for supLoadModuleResolveImport.
132	*/
133	typedef struct SUPLDRRESIMPARGS
134	{
135	const char *pszModule;
136	PRTERRINFO pErrInfo;
137	uint32_t fLoadReq; /*< SUPLDRLOAD_F_XXX /
138	} SUPLDRRESIMPARGS, *PSUPLDRRESIMPARGS;
139
140	/**
141	* Resolve an external symbol during RTLdrGetBits().
142	*
143	* @returns VBox status code.
144	* @param hLdrMod The loader module handle.
145	* @param pszModule Module name.
146	* @param pszSymbol Symbol name, NULL if uSymbol should be used.
147	* @param uSymbol Symbol ordinal, ~0 if pszSymbol should be used.
148	* @param pValue Where to store the symbol value (address).
149	* @param pvUser User argument.
150	*/
151	static DECLCALLBACK(int) supLoadModuleResolveImport(RTLDRMOD hLdrMod, const char *pszModule,
152	const char pszSymbol, unsigned uSymbol, RTUINTPTR pValue, void *pvUser)
153	{
154	NOREF(hLdrMod); NOREF(uSymbol);
155	AssertPtr(pValue);
156	AssertPtr(pvUser);
157	PSUPLDRRESIMPARGS pArgs = (PSUPLDRRESIMPARGS)pvUser;
158
159	/*
160	* Only SUPR0 and VMMR0.r0
161	*/
162	if ( pszModule
163	&& *pszModule
164	&& strcmp(pszModule, "VBoxSup.sys")
165	&& strcmp(pszModule, "VBoxDrv.sys") /* old name */
166	&& strcmp(pszModule, "VMMR0.r0"))
167	{
168	#if defined(RT_OS_WINDOWS) && 0 /* Useful for VMMR0 hacking, not for production use. See also SUPDrv-win.cpp */
169	if (strcmp(pszModule, "ntoskrnl.exe") == 0)
170	{
171	pValue = 42; / Non-zero so ring-0 can find the end of the IAT and exclude it when comparing. */
172	return VINF_SUCCESS;
173	}
174	#endif
175	AssertMsgFailed(("%s is importing from %s! (expected 'SUPR0.dll' or 'VMMR0.r0', case-sensitive)\n", pArgs->pszModule, pszModule));
176	return RTErrInfoSetF(pArgs->pErrInfo, VERR_SYMBOL_NOT_FOUND,
177	"Unexpected import module '%s' in '%s'", pszModule, pArgs->pszModule);
178	}
179
180	/*
181	* No ordinals.
182	*/
183	if (uSymbol != ~0U)
184	{
185	AssertMsgFailed(("%s is importing by ordinal (ord=%d)\n", pArgs->pszModule, uSymbol));
186	return RTErrInfoSetF(pArgs->pErrInfo, VERR_SYMBOL_NOT_FOUND,
187	"Unexpected ordinal import (%#x) in '%s'", uSymbol, pArgs->pszModule);
188	}
189
190	/*
191	* Lookup symbol.
192	*/
193	/* Skip the 64-bit ELF import prefix first. */
194	/** @todo is this actually used??? */
195	if (!strncmp(pszSymbol, RT_STR_TUPLE("SUPR0$")))
196	pszSymbol += sizeof("SUPR0$") - 1;
197
198	/*
199	* Check the VMMR0.r0 module if loaded.
200	*/
201	if (g_pvVMMR0 != NIL_RTR0PTR)
202	{
203	void *pvValue;
204	if (!SUPR3GetSymbolR0((void *)g_pvVMMR0, pszSymbol, &pvValue))
205	{
206	*pValue = (uintptr_t)pvValue;
207	pArgs->fLoadReq \|= SUPLDRLOAD_F_DEP_VMMR0;
208	return VINF_SUCCESS;
209	}
210	}
211
212	/* iterate the function table. */
213	int c = g_pSupFunctions->u.Out.cFunctions;
214	PSUPFUNC pFunc = &g_pSupFunctions->u.Out.aFunctions[0];
215	while (c-- > 0)
216	{
217	if (!strcmp(pFunc->szName, pszSymbol))
218	{
219	*pValue = (uintptr_t)pFunc->pfn;
220	return VINF_SUCCESS;
221	}
222	pFunc++;
223	}
224
225	/*
226	* The GIP.
227	*/
228	if ( pszSymbol
229	&& g_pSUPGlobalInfoPage
230	&& g_pSUPGlobalInfoPageR0
231	&& !strcmp(pszSymbol, "g_SUPGlobalInfoPage")
232	)
233	{
234	*pValue = (uintptr_t)g_pSUPGlobalInfoPageR0;
235	return VINF_SUCCESS;
236	}
237
238	/*
239	* Symbols that are undefined by convention.
240	*/
241	#ifdef RT_OS_SOLARIS
242	static const char * const s_apszConvSyms[] =
243	{
244	"", "mod_getctl",
245	"", "mod_install",
246	"", "mod_remove",
247	"", "mod_info",
248	"", "mod_miscops",
249	};
250	for (unsigned i = 0; i < RT_ELEMENTS(s_apszConvSyms); i += 2)
251	{
252	if ( !RTStrCmp(s_apszConvSyms[i], pszModule)
253	&& !RTStrCmp(s_apszConvSyms[i + 1], pszSymbol))
254	{
255	*pValue = ~(uintptr_t)0;
256	return VINF_SUCCESS;
257	}
258	}
259	#endif
260
261	/*
262	* Despair.
263	*/
264	c = g_pSupFunctions->u.Out.cFunctions;
265	pFunc = &g_pSupFunctions->u.Out.aFunctions[0];
266	while (c-- > 0)
267	{
268	RTAssertMsg2Weak("%d: %s\n", g_pSupFunctions->u.Out.cFunctions - c, pFunc->szName);
269	pFunc++;
270	}
271	RTAssertMsg2Weak("%s is importing %s which we couldn't find\n", pArgs->pszModule, pszSymbol);
272
273	AssertLogRelMsgFailed(("%s is importing %s which we couldn't find\n", pArgs->pszModule, pszSymbol));
274	if (g_uSupFakeMode)
275	{
276	*pValue = 0xdeadbeef;
277	return VINF_SUCCESS;
278	}
279	return RTErrInfoSetF(pArgs->pErrInfo, VERR_SYMBOL_NOT_FOUND,
280	"Unable to locate imported symbol '%s%s%s' for module '%s'",
281	pszModule ? pszModule : "",
282	pszModule && *pszModule ? "." : "",
283	pszSymbol,
284	pArgs->pszModule);
285	}
286
287
288	/** Argument package for supLoadModuleCalcSizeCB. */
289	typedef struct SUPLDRCALCSIZEARGS
290	{
291	size_t cbStrings;
292	uint32_t cSymbols;
293	size_t cbImage;
294	} SUPLDRCALCSIZEARGS, *PSUPLDRCALCSIZEARGS;
295
296	/**
297	* Callback used to calculate the image size.
298	* @return VINF_SUCCESS
299	*/
300	static DECLCALLBACK(int) supLoadModuleCalcSizeCB(RTLDRMOD hLdrMod, const char pszSymbol, unsigned uSymbol, RTUINTPTR Value, void pvUser)
301	{
302	PSUPLDRCALCSIZEARGS pArgs = (PSUPLDRCALCSIZEARGS)pvUser;
303	if ( pszSymbol != NULL
304	&& *pszSymbol
305	&& Value <= pArgs->cbImage)
306	{
307	pArgs->cSymbols++;
308	pArgs->cbStrings += strlen(pszSymbol) + 1;
309	}
310	NOREF(hLdrMod); NOREF(uSymbol);
311	return VINF_SUCCESS;
312	}
313
314
315	/** Argument package for supLoadModuleCreateTabsCB. */
316	typedef struct SUPLDRCREATETABSARGS
317	{
318	size_t cbImage;
319	PSUPLDRSYM pSym;
320	char *pszBase;
321	char *psz;
322	} SUPLDRCREATETABSARGS, *PSUPLDRCREATETABSARGS;
323
324	/**
325	* Callback used to calculate the image size.
326	* @return VINF_SUCCESS
327	*/
328	static DECLCALLBACK(int) supLoadModuleCreateTabsCB(RTLDRMOD hLdrMod, const char pszSymbol, unsigned uSymbol, RTUINTPTR Value, void pvUser)
329	{
330	PSUPLDRCREATETABSARGS pArgs = (PSUPLDRCREATETABSARGS)pvUser;
331	if ( pszSymbol != NULL
332	&& *pszSymbol
333	&& Value <= pArgs->cbImage)
334	{
335	pArgs->pSym->offSymbol = (uint32_t)Value;
336	pArgs->pSym->offName = pArgs->psz - pArgs->pszBase;
337	pArgs->pSym++;
338
339	size_t cbCopy = strlen(pszSymbol) + 1;
340	memcpy(pArgs->psz, pszSymbol, cbCopy);
341	pArgs->psz += cbCopy;
342	}
343	NOREF(hLdrMod); NOREF(uSymbol);
344	return VINF_SUCCESS;
345	}
346
347
348	/** Argument package for supLoadModuleCompileSegmentsCB. */
349	typedef struct SUPLDRCOMPSEGTABARGS
350	{
351	uint32_t uStartRva;
352	uint32_t uEndRva;
353	uint32_t fProt;
354	uint32_t iSegs;
355	uint32_t cSegsAlloc;
356	PSUPLDRSEG paSegs;
357	PRTERRINFO pErrInfo;
358	} SUPLDRCOMPSEGTABARGS, *PSUPLDRCOMPSEGTABARGS;
359
360	/**
361	* @callback_method_impl{FNRTLDRENUMSEGS,
362	* Compile list of segments with the same memory protection.}
363	*/
364	static DECLCALLBACK(int) supLoadModuleCompileSegmentsCB(RTLDRMOD hLdrMod, PCRTLDRSEG pSeg, void *pvUser)
365	{
366	PSUPLDRCOMPSEGTABARGS pArgs = (PSUPLDRCOMPSEGTABARGS)pvUser;
367	AssertCompile(RTMEM_PROT_READ == SUPLDR_PROT_READ);
368	AssertCompile(RTMEM_PROT_WRITE == SUPLDR_PROT_WRITE);
369	AssertCompile(RTMEM_PROT_EXEC == SUPLDR_PROT_EXEC);
370	RT_NOREF(hLdrMod);
371
372	Log2(("supLoadModuleCompileSegmentsCB: %RTptr/%RTptr LB %RTptr/%RTptr prot %#x %s\n",
373	pSeg->LinkAddress, pSeg->RVA, pSeg->cbMapped, pSeg->cb, pSeg->fProt, pSeg->pszName));
374
375	/* Ignore segments not part of the loaded image. */
376	if (pSeg->RVA == NIL_RTLDRADDR \|\| pSeg->cbMapped == 0)
377	{
378	Log2(("supLoadModuleCompileSegmentsCB: -> skipped\n"));
379	return VINF_SUCCESS;
380	}
381
382	/* We currently ASSUME that all relevant segments are in ascending RVA order. */
383	AssertReturn(pSeg->RVA >= pArgs->uEndRva,
384	RTERRINFO_LOG_REL_SET_F(pArgs->pErrInfo, VERR_BAD_EXE_FORMAT, "Out of order segment: %p LB %#zx #%.*s",
385	pSeg->RVA, pSeg->cb, pSeg->cchName, pSeg->pszName));
386
387	/* We ASSUME the cbMapped field is implemented. */
388	AssertReturn(pSeg->cbMapped != NIL_RTLDRADDR, VERR_INTERNAL_ERROR_2);
389	AssertReturn(pSeg->cbMapped < _1G, VERR_INTERNAL_ERROR_4);
390	uint32_t cbMapped = (uint32_t)pSeg->cbMapped;
391	AssertReturn(pSeg->RVA < _1G, VERR_INTERNAL_ERROR_3);
392	uint32_t uRvaSeg = (uint32_t)pSeg->RVA;
393
394	/*
395	* If the protection is the same as the previous segment,
396	* just update uEndRva and continue.
397	*/
398	uint32_t fProt = pSeg->fProt;
399	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
400	if (fProt & RTMEM_PROT_EXEC)
401	fProt \|= fProt & RTMEM_PROT_READ;
402	#endif
403	if (pSeg->fProt == pArgs->fProt)
404	{
405	pArgs->uEndRva = uRvaSeg + cbMapped;
406	Log2(("supLoadModuleCompileSegmentsCB: -> merged, end %#x\n", pArgs->uEndRva));
407	return VINF_SUCCESS;
408	}
409
410	/*
411	* The protection differs, so commit current segment and start a new one.
412	* However, if the new segment and old segment share a page, this becomes
413	* a little more complicated...
414	*/
415	if (pArgs->uStartRva < pArgs->uEndRva)
416	{
417	if (((pArgs->uEndRva - 1) >> PAGE_SHIFT) != (uRvaSeg >> PAGE_SHIFT))
418	{
419	/* No common page, so make the new segment start on a page boundrary. */
420	cbMapped += uRvaSeg & PAGE_OFFSET_MASK;
421	uRvaSeg &= ~(uint32_t)PAGE_OFFSET_MASK;
422	Assert(pArgs->uEndRva <= uRvaSeg);
423	Log2(("supLoadModuleCompileSegmentsCB: -> new, no common\n"));
424	}
425	else if ((fProt & pArgs->fProt) == fProt)
426	{
427	/* The current segment includes the memory protections of the
428	previous, so include the common page in it: */
429	uint32_t const cbCommon = PAGE_SIZE - (uRvaSeg & PAGE_OFFSET_MASK);
430	if (cbCommon >= cbMapped)
431	{
432	pArgs->uEndRva = uRvaSeg + cbMapped;
433	Log2(("supLoadModuleCompileSegmentsCB: -> merge, %#x common, upgrading prot to %#x, end %#x\n",
434	cbCommon, pArgs->fProt, pArgs->uEndRva));
435	return VINF_SUCCESS; /* New segment was smaller than a page. */
436	}
437	cbMapped -= cbCommon;
438	uRvaSeg += cbCommon;
439	Assert(pArgs->uEndRva <= uRvaSeg);
440	Log2(("supLoadModuleCompileSegmentsCB: -> new, %#x common into previous\n", cbCommon));
441	}
442	else if ((fProt & pArgs->fProt) == pArgs->fProt)
443	{
444	/* The new segment includes the memory protections of the
445	previous, so include the common page in it: */
446	cbMapped += uRvaSeg & PAGE_OFFSET_MASK;
447	uRvaSeg &= ~(uint32_t)PAGE_OFFSET_MASK;
448	if (uRvaSeg == pArgs->uStartRva)
449	{
450	pArgs->fProt = fProt;
451	pArgs->uEndRva = uRvaSeg + cbMapped;
452	Log2(("supLoadModuleCompileSegmentsCB: -> upgrade current protection, end %#x\n", pArgs->uEndRva));
453	return VINF_SUCCESS; /* Current segment was smaller than a page. */
454	}
455	Log2(("supLoadModuleCompileSegmentsCB: -> new, %#x common into new\n", (uint32_t)(pSeg->RVA & PAGE_OFFSET_MASK)));
456	}
457	else
458	{
459	/* Create a new segment for the common page with the combined protection. */
460	Log2(("supLoadModuleCompileSegmentsCB: -> it's complicated...\n"));
461	pArgs->uEndRva &= ~(uint32_t)PAGE_OFFSET_MASK;
462	if (pArgs->uEndRva > pArgs->uStartRva)
463	{
464	Log2(("supLoadModuleCompileSegmentsCB: SUP Seg #%u: %#x LB %#x prot %#x\n",
465	pArgs->iSegs, pArgs->uStartRva, pArgs->uEndRva - pArgs->uStartRva, pArgs->fProt));
466	if (pArgs->paSegs)
467	{
468	AssertReturn(pArgs->iSegs < pArgs->cSegsAlloc, VERR_INTERNAL_ERROR_5);
469	pArgs->paSegs[pArgs->iSegs].off = pArgs->uStartRva;
470	pArgs->paSegs[pArgs->iSegs].cb = pArgs->uEndRva - pArgs->uStartRva;
471	pArgs->paSegs[pArgs->iSegs].fProt = pArgs->fProt;
472	pArgs->paSegs[pArgs->iSegs].fUnused = 0;
473	}
474	pArgs->iSegs++;
475	pArgs->uStartRva = pArgs->uEndRva;
476	}
477	pArgs->fProt \|= fProt;
478
479	uint32_t const cbCommon = PAGE_SIZE - (uRvaSeg & PAGE_OFFSET_MASK);
480	if (cbCommon >= cbMapped)
481	{
482	fProt \|= pArgs->fProt;
483	pArgs->uEndRva = uRvaSeg + cbMapped;
484	return VINF_SUCCESS; /* New segment was smaller than a page. */
485	}
486	cbMapped -= cbCommon;
487	uRvaSeg += cbCommon;
488	Assert(uRvaSeg - pArgs->uStartRva == PAGE_SIZE);
489	}
490
491	/* The current segment should end where the new one starts, no gaps. */
492	pArgs->uEndRva = uRvaSeg;
493
494	/* Emit the current segment */
495	Log2(("supLoadModuleCompileSegmentsCB: SUP Seg #%u: %#x LB %#x prot %#x\n",
496	pArgs->iSegs, pArgs->uStartRva, pArgs->uEndRva - pArgs->uStartRva, pArgs->fProt));
497	if (pArgs->paSegs)
498	{
499	AssertReturn(pArgs->iSegs < pArgs->cSegsAlloc, VERR_INTERNAL_ERROR_5);
500	pArgs->paSegs[pArgs->iSegs].off = pArgs->uStartRva;
501	pArgs->paSegs[pArgs->iSegs].cb = pArgs->uEndRva - pArgs->uStartRva;
502	pArgs->paSegs[pArgs->iSegs].fProt = pArgs->fProt;
503	pArgs->paSegs[pArgs->iSegs].fUnused = 0;
504	}
505	pArgs->iSegs++;
506	}
507	/* else: current segment is empty */
508
509	/* Start the new segment. */
510	Assert(!(uRvaSeg & PAGE_OFFSET_MASK));
511	pArgs->fProt = fProt;
512	pArgs->uStartRva = uRvaSeg;
513	pArgs->uEndRva = uRvaSeg + cbMapped;
514	return VINF_SUCCESS;
515	}
516
517
518	/**
519	* Worker for supLoadModule().
520	*/
521	static int supLoadModuleInner(RTLDRMOD hLdrMod, PSUPLDRLOAD pLoadReq, uint32_t cbImageWithEverything,
522	RTR0PTR uImageBase, size_t cbImage, const char pszModule, const char pszFilename,
523	bool fNativeLoader, bool fIsVMMR0, const char *pszSrvReqHandler,
524	uint32_t offSymTab, uint32_t cSymbols,
525	uint32_t offStrTab, size_t cbStrTab,
526	uint32_t offSegTab, uint32_t cSegments,
527	PRTERRINFO pErrInfo)
528	{
529	/*
530	* Get the image bits.
531	*/
532	SUPLDRRESIMPARGS Args = { pszModule, pErrInfo, 0 };
533	int rc = RTLdrGetBits(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase, supLoadModuleResolveImport, &Args);
534	if (RT_FAILURE(rc))
535	{
536	LogRel(("SUP: RTLdrGetBits failed for %s (%s). rc=%Rrc\n", pszModule, pszFilename, rc));
537	if (!RTErrInfoIsSet(pErrInfo))
538	RTErrInfoSetF(pErrInfo, rc, "RTLdrGetBits failed");
539	return rc;
540	}
541
542	/*
543	* Get the entry points.
544	*/
545	RTUINTPTR VMMR0EntryFast = 0;
546	RTUINTPTR VMMR0EntryEx = 0;
547	RTUINTPTR SrvReqHandler = 0;
548	RTUINTPTR ModuleInit = 0;
549	RTUINTPTR ModuleTerm = 0;
550	const char *pszEp = NULL;
551	if (fIsVMMR0)
552	{
553	rc = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
554	UINT32_MAX, pszEp = "VMMR0EntryFast", &VMMR0EntryFast);
555	if (RT_SUCCESS(rc))
556	rc = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
557	UINT32_MAX, pszEp = "VMMR0EntryEx", &VMMR0EntryEx);
558	}
559	else if (pszSrvReqHandler)
560	rc = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
561	UINT32_MAX, pszEp = pszSrvReqHandler, &SrvReqHandler);
562	if (RT_SUCCESS(rc))
563	{
564	int rc2 = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
565	UINT32_MAX, pszEp = "ModuleInit", &ModuleInit);
566	if (RT_FAILURE(rc2))
567	ModuleInit = 0;
568
569	rc2 = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
570	UINT32_MAX, pszEp = "ModuleTerm", &ModuleTerm);
571	if (RT_FAILURE(rc2))
572	ModuleTerm = 0;
573	}
574	if (RT_FAILURE(rc))
575	{
576	LogRel(("SUP: Failed to get entry point '%s' for %s (%s) rc=%Rrc\n", pszEp, pszModule, pszFilename, rc));
577	return RTErrInfoSetF(pErrInfo, rc, "Failed to resolve entry point '%s'", pszEp);
578	}
579
580	/*
581	* Create the symbol and string tables.
582	*/
583	SUPLDRCREATETABSARGS CreateArgs;
584	CreateArgs.cbImage = cbImage;
585	CreateArgs.pSym = (PSUPLDRSYM)&pLoadReq->u.In.abImage[offSymTab];
586	CreateArgs.pszBase = (char *)&pLoadReq->u.In.abImage[offStrTab];
587	CreateArgs.psz = CreateArgs.pszBase;
588	rc = RTLdrEnumSymbols(hLdrMod, 0, NULL, 0, supLoadModuleCreateTabsCB, &CreateArgs);
589	if (RT_FAILURE(rc))
590	{
591	LogRel(("SUP: RTLdrEnumSymbols failed for %s (%s) rc=%Rrc\n", pszModule, pszFilename, rc));
592	return RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSymbols #2 failed");
593	}
594	AssertRelease((size_t)(CreateArgs.psz - CreateArgs.pszBase) <= cbStrTab);
595	AssertRelease((size_t)(CreateArgs.pSym - (PSUPLDRSYM)&pLoadReq->u.In.abImage[offSymTab]) <= cSymbols);
596
597	/*
598	* Create the segment table.
599	*/
600	SUPLDRCOMPSEGTABARGS SegArgs;
601	SegArgs.uStartRva = 0;
602	SegArgs.uEndRva = 0;
603	SegArgs.fProt = RTMEM_PROT_READ;
604	SegArgs.iSegs = 0;
605	SegArgs.cSegsAlloc = cSegments;
606	SegArgs.paSegs = (PSUPLDRSEG)&pLoadReq->u.In.abImage[offSegTab];
607	SegArgs.pErrInfo = pErrInfo;
608	rc = RTLdrEnumSegments(hLdrMod, supLoadModuleCompileSegmentsCB, &SegArgs);
609	if (RT_FAILURE(rc))
610	{
611	LogRel(("SUP: RTLdrEnumSegments failed for %s (%s) rc=%Rrc\n", pszModule, pszFilename, rc));
612	return RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSegments #2 failed");
613	}
614	SegArgs.uEndRva = (uint32_t)cbImage;
615	AssertReturn(SegArgs.uEndRva == cbImage, VERR_OUT_OF_RANGE);
616	if (SegArgs.uEndRva > SegArgs.uStartRva)
617	{
618	SegArgs.paSegs[SegArgs.iSegs].off = SegArgs.uStartRva;
619	SegArgs.paSegs[SegArgs.iSegs].cb = SegArgs.uEndRva - SegArgs.uStartRva;
620	SegArgs.paSegs[SegArgs.iSegs].fProt = SegArgs.fProt;
621	SegArgs.paSegs[SegArgs.iSegs].fUnused = 0;
622	SegArgs.iSegs++;
623	}
624	for (uint32_t i = 0; i < SegArgs.iSegs; i++)
625	LogRel(("SUP: seg #%u: %c%c%c %#010RX32 LB %#010RX32\n", i, /** @todo LogRel2 */
626	SegArgs.paSegs[i].fProt & SUPLDR_PROT_READ ? 'R' : ' ',
627	SegArgs.paSegs[i].fProt & SUPLDR_PROT_WRITE ? 'W' : ' ',
628	SegArgs.paSegs[i].fProt & SUPLDR_PROT_EXEC ? 'X' : ' ',
629	SegArgs.paSegs[i].off, SegArgs.paSegs[i].cb));
630	AssertRelease(SegArgs.iSegs == cSegments);
631	AssertRelease(SegArgs.cSegsAlloc == cSegments);
632
633	/*
634	* Upload the image.
635	*/
636	pLoadReq->Hdr.u32Cookie = g_u32Cookie;
637	pLoadReq->Hdr.u32SessionCookie = g_u32SessionCookie;
638	pLoadReq->Hdr.cbIn = SUP_IOCTL_LDR_LOAD_SIZE_IN(cbImageWithEverything);
639	pLoadReq->Hdr.cbOut = SUP_IOCTL_LDR_LOAD_SIZE_OUT;
640	pLoadReq->Hdr.fFlags = SUPREQHDR_FLAGS_MAGIC \| SUPREQHDR_FLAGS_EXTRA_IN;
641	pLoadReq->Hdr.rc = VERR_INTERNAL_ERROR;
642
643	pLoadReq->u.In.pfnModuleInit = (RTR0PTR)ModuleInit;
644	pLoadReq->u.In.pfnModuleTerm = (RTR0PTR)ModuleTerm;
645	if (fIsVMMR0)
646	{
647	pLoadReq->u.In.eEPType = SUPLDRLOADEP_VMMR0;
648	pLoadReq->u.In.EP.VMMR0.pvVMMR0EntryFast = (RTR0PTR)VMMR0EntryFast;
649	pLoadReq->u.In.EP.VMMR0.pvVMMR0EntryEx = (RTR0PTR)VMMR0EntryEx;
650	}
651	else if (pszSrvReqHandler)
652	{
653	pLoadReq->u.In.eEPType = SUPLDRLOADEP_SERVICE;
654	pLoadReq->u.In.EP.Service.pfnServiceReq = (RTR0PTR)SrvReqHandler;
655	pLoadReq->u.In.EP.Service.apvReserved[0] = NIL_RTR0PTR;
656	pLoadReq->u.In.EP.Service.apvReserved[1] = NIL_RTR0PTR;
657	pLoadReq->u.In.EP.Service.apvReserved[2] = NIL_RTR0PTR;
658	}
659	else
660	pLoadReq->u.In.eEPType = SUPLDRLOADEP_NOTHING;
661	pLoadReq->u.In.offStrTab = offStrTab;
662	pLoadReq->u.In.cbStrTab = (uint32_t)cbStrTab;
663	AssertRelease(pLoadReq->u.In.cbStrTab == cbStrTab);
664	pLoadReq->u.In.cbImageBits = (uint32_t)cbImage;
665	pLoadReq->u.In.offSymbols = offSymTab;
666	pLoadReq->u.In.cSymbols = cSymbols;
667	pLoadReq->u.In.offSegments = offSegTab;
668	pLoadReq->u.In.cSegments = cSegments;
669	pLoadReq->u.In.cbImageWithEverything = cbImageWithEverything;
670	pLoadReq->u.In.pvImageBase = uImageBase;
671	pLoadReq->u.In.fFlags = Args.fLoadReq;
672	if (!g_uSupFakeMode)
673	{
674	rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_LOAD, pLoadReq, SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything));
675	if (RT_SUCCESS(rc))
676	rc = pLoadReq->Hdr.rc;
677	else
678	LogRel(("SUP: SUP_IOCTL_LDR_LOAD ioctl for %s (%s) failed rc=%Rrc\n", pszModule, pszFilename, rc));
679	}
680	else
681	rc = VINF_SUCCESS;
682	if ( RT_SUCCESS(rc)
683	\|\| rc == VERR_ALREADY_LOADED /* A competing process. */
684	)
685	{
686	LogRel(("SUP: Loaded %s (%s) at %#RKv - ModuleInit at %RKv and ModuleTerm at %RKv%s\n",
687	pszModule, pszFilename, uImageBase, (RTR0PTR)ModuleInit, (RTR0PTR)ModuleTerm,
688	fNativeLoader ? " using the native ring-0 loader" : ""));
689	if (fIsVMMR0)
690	{
691	g_pvVMMR0 = uImageBase;
692	LogRel(("SUP: VMMR0EntryEx located at %RKv and VMMR0EntryFast at %RKv\n", (RTR0PTR)VMMR0EntryEx, (RTR0PTR)VMMR0EntryFast));
693	}
694	#ifdef RT_OS_WINDOWS
695	LogRel(("SUP: windbg> .reload /f %s=%#RKv\n", pszFilename, uImageBase));
696	#endif
697	return VINF_SUCCESS;
698	}
699
700	/*
701	* Failed, bail out.
702	*/
703	LogRel(("SUP: Loading failed for %s (%s) rc=%Rrc\n", pszModule, pszFilename, rc));
704	if ( pLoadReq->u.Out.uErrorMagic == SUPLDRLOAD_ERROR_MAGIC
705	&& pLoadReq->u.Out.szError[0] != '\0')
706	{
707	LogRel(("SUP: %s\n", pLoadReq->u.Out.szError));
708	return RTErrInfoSet(pErrInfo, rc, pLoadReq->u.Out.szError);
709	}
710	return RTErrInfoSet(pErrInfo, rc, "SUP_IOCTL_LDR_LOAD failed");
711	}
712
713
714	/**
715	* Worker for SUPR3LoadModule().
716	*
717	* @returns VBox status code.
718	* @param pszFilename Name of the VMMR0 image file
719	* @param pszModule The modulen name.
720	* @param pszSrvReqHandler The service request handler symbol name,
721	* optional.
722	* @param pErrInfo Where to store detailed error info. Optional.
723	* @param ppvImageBase Where to return the load address.
724	*/
725	static int supLoadModule(const char pszFilename, const char pszModule, const char *pszSrvReqHandler,
726	PRTERRINFO pErrInfo, void **ppvImageBase)
727	{
728	SUPLDROPEN OpenReq;
729
730	/*
731	* Validate input.
732	*/
733	AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
734	AssertPtrReturn(pszModule, VERR_INVALID_PARAMETER);
735	AssertPtrReturn(ppvImageBase, VERR_INVALID_PARAMETER);
736	AssertReturn(strlen(pszModule) < sizeof(OpenReq.u.In.szName), VERR_FILENAME_TOO_LONG);
737
738	const bool fIsVMMR0 = !strcmp(pszModule, "VMMR0.r0");
739	AssertReturn(!pszSrvReqHandler \|\| !fIsVMMR0, VERR_INTERNAL_ERROR);
740	*ppvImageBase = NULL;
741
742	/*
743	* First try open it w/o preparing a binary for loading.
744	*
745	* This will be a lot faster if it's already loaded, and it will
746	* avoid fixup issues when using wrapped binaries. With wrapped
747	* ring-0 binaries not all binaries need to be wrapped, so trying
748	* to load it ourselves is not a bug, but intentional behaviour
749	* (even it it asserts in the loader code).
750	*/
751	OpenReq.Hdr.u32Cookie = g_u32Cookie;
752	OpenReq.Hdr.u32SessionCookie = g_u32SessionCookie;
753	OpenReq.Hdr.cbIn = SUP_IOCTL_LDR_OPEN_SIZE_IN;
754	OpenReq.Hdr.cbOut = SUP_IOCTL_LDR_OPEN_SIZE_OUT;
755	OpenReq.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
756	OpenReq.Hdr.rc = VERR_INTERNAL_ERROR;
757	OpenReq.u.In.cbImageWithEverything = 0;
758	OpenReq.u.In.cbImageBits = 0;
759	strcpy(OpenReq.u.In.szName, pszModule);
760	int rc = RTPathAbs(pszFilename, OpenReq.u.In.szFilename, sizeof(OpenReq.u.In.szFilename));
761	if (RT_FAILURE(rc))
762	return rc;
763	if ( (SUPDRV_IOC_VERSION & 0xffff0000) != 0x00300000
764	\|\| g_uSupSessionVersion >= 0x00300001)
765	{
766	if (!g_uSupFakeMode)
767	{
768	rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_OPEN, &OpenReq, SUP_IOCTL_LDR_OPEN_SIZE);
769	if (RT_SUCCESS(rc))
770	rc = OpenReq.Hdr.rc;
771	}
772	else
773	{
774	OpenReq.u.Out.fNeedsLoading = true;
775	OpenReq.u.Out.pvImageBase = 0xef423420;
776	}
777	ppvImageBase = (void )OpenReq.u.Out.pvImageBase;
778	if (rc != VERR_MODULE_NOT_FOUND)
779	{
780	if (fIsVMMR0)
781	g_pvVMMR0 = OpenReq.u.Out.pvImageBase;
782	LogRel(("SUP: Opened %s (%s) at %#RKv%s.\n", pszModule, pszFilename, OpenReq.u.Out.pvImageBase,
783	OpenReq.u.Out.fNativeLoader ? " loaded by the native ring-0 loader" : ""));
784	#ifdef RT_OS_WINDOWS
785	LogRel(("SUP: windbg> .reload /f %s=%#RKv\n", pszFilename, OpenReq.u.Out.pvImageBase));
786	#endif
787	return rc;
788	}
789	}
790
791	/*
792	* Open image file and figure its size.
793	*/
794	RTLDRMOD hLdrMod;
795	rc = RTLdrOpenEx(OpenReq.u.In.szFilename, 0 /fFlags/, RTLDRARCH_HOST, &hLdrMod, pErrInfo);
796	if (RT_FAILURE(rc))
797	{
798	LogRel(("SUP: RTLdrOpen failed for %s (%s) %Rrc\n", pszModule, OpenReq.u.In.szFilename, rc));
799	return rc;
800	}
801
802	SUPLDRCALCSIZEARGS CalcArgs;
803	CalcArgs.cbStrings = 0;
804	CalcArgs.cSymbols = 0;
805	CalcArgs.cbImage = RTLdrSize(hLdrMod);
806	rc = RTLdrEnumSymbols(hLdrMod, 0, NULL, 0, supLoadModuleCalcSizeCB, &CalcArgs);
807	if (RT_SUCCESS(rc))
808	{
809	/*
810	* Figure out the number of segments needed first.
811	*/
812	SUPLDRCOMPSEGTABARGS SegArgs;
813	SegArgs.uStartRva = 0;
814	SegArgs.uEndRva = 0;
815	SegArgs.fProt = RTMEM_PROT_READ;
816	SegArgs.iSegs = 0;
817	SegArgs.cSegsAlloc = 0;
818	SegArgs.paSegs = NULL;
819	SegArgs.pErrInfo = pErrInfo;
820	rc = RTLdrEnumSegments(hLdrMod, supLoadModuleCompileSegmentsCB, &SegArgs);
821	if (RT_SUCCESS(rc))
822	{
823	Assert(SegArgs.uEndRva <= RTLdrSize(hLdrMod));
824	SegArgs.uEndRva = (uint32_t)CalcArgs.cbImage; /* overflow is checked later */
825	if (SegArgs.uEndRva > SegArgs.uStartRva)
826	{
827	Log2(("supLoadModule: SUP Seg #%u: %#x LB %#x prot %#x\n",
828	SegArgs.iSegs, SegArgs.uStartRva, SegArgs.uEndRva - SegArgs.uStartRva, SegArgs.fProt));
829	SegArgs.iSegs++;
830	}
831
832	const uint32_t offSymTab = RT_ALIGN_32(CalcArgs.cbImage, 8);
833	const uint32_t offStrTab = offSymTab + CalcArgs.cSymbols * sizeof(SUPLDRSYM);
834	const uint32_t offSegTab = RT_ALIGN_32(offStrTab + CalcArgs.cbStrings, 8);
835	const uint32_t cbImageWithEverything = RT_ALIGN_32(offSegTab + sizeof(SUPLDRSEG) * SegArgs.iSegs, 8);
836
837	/*
838	* Open the R0 image.
839	*/
840	OpenReq.Hdr.u32Cookie = g_u32Cookie;
841	OpenReq.Hdr.u32SessionCookie = g_u32SessionCookie;
842	OpenReq.Hdr.cbIn = SUP_IOCTL_LDR_OPEN_SIZE_IN;
843	OpenReq.Hdr.cbOut = SUP_IOCTL_LDR_OPEN_SIZE_OUT;
844	OpenReq.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
845	OpenReq.Hdr.rc = VERR_INTERNAL_ERROR;
846	OpenReq.u.In.cbImageWithEverything = cbImageWithEverything;
847	OpenReq.u.In.cbImageBits = (uint32_t)CalcArgs.cbImage;
848	strcpy(OpenReq.u.In.szName, pszModule);
849	rc = RTPathAbs(pszFilename, OpenReq.u.In.szFilename, sizeof(OpenReq.u.In.szFilename));
850	AssertRC(rc);
851	if (RT_SUCCESS(rc))
852	{
853	if (!g_uSupFakeMode)
854	{
855	rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_OPEN, &OpenReq, SUP_IOCTL_LDR_OPEN_SIZE);
856	if (RT_SUCCESS(rc))
857	rc = OpenReq.Hdr.rc;
858	}
859	else
860	{
861	OpenReq.u.Out.fNeedsLoading = true;
862	OpenReq.u.Out.pvImageBase = 0xef423420;
863	}
864	}
865	ppvImageBase = (void )OpenReq.u.Out.pvImageBase;
866	if ( RT_SUCCESS(rc)
867	&& OpenReq.u.Out.fNeedsLoading)
868	{
869	/*
870	* We need to load it.
871	*
872	* Allocate the request and pass it to an inner work function
873	* that populates it and sends it off to the driver.
874	*/
875	const uint32_t cbLoadReq = SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything);
876	PSUPLDRLOAD pLoadReq = (PSUPLDRLOAD)RTMemTmpAlloc(cbLoadReq);
877	if (pLoadReq)
878	{
879	rc = supLoadModuleInner(hLdrMod, pLoadReq, cbImageWithEverything, OpenReq.u.Out.pvImageBase, CalcArgs.cbImage,
880	pszModule, pszFilename, OpenReq.u.Out.fNativeLoader, fIsVMMR0, pszSrvReqHandler,
881	offSymTab, CalcArgs.cSymbols,
882	offStrTab, CalcArgs.cbStrings,
883	offSegTab, SegArgs.iSegs,
884	pErrInfo);
885	RTMemTmpFree(pLoadReq);
886	}
887	else
888	{
889	AssertMsgFailed(("failed to allocated %u bytes for SUPLDRLOAD_IN structure!\n", SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything)));
890	rc = RTErrInfoSetF(pErrInfo, VERR_NO_TMP_MEMORY, "Failed to allocate %u bytes for the load request",
891	SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything));
892	}
893	}
894	/*
895	* Already loaded?
896	*/
897	else if (RT_SUCCESS(rc))
898	{
899	if (fIsVMMR0)
900	g_pvVMMR0 = OpenReq.u.Out.pvImageBase;
901	LogRel(("SUP: Opened %s (%s) at %#RKv%s.\n", pszModule, pszFilename, OpenReq.u.Out.pvImageBase,
902	OpenReq.u.Out.fNativeLoader ? " loaded by the native ring-0 loader" : ""));
903	#ifdef RT_OS_WINDOWS
904	LogRel(("SUP: windbg> .reload /f %s=%#RKv\n", pszFilename, OpenReq.u.Out.pvImageBase));
905	#endif
906	}
907	/*
908	* No, failed.
909	*/
910	else
911	RTErrInfoSet(pErrInfo, rc, "SUP_IOCTL_LDR_OPEN failed");
912	}
913	else if (!RTErrInfoIsSet(pErrInfo) && pErrInfo)
914	RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSegments #1 failed");
915	}
916	else
917	RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSymbols #1 failed");
918	RTLdrClose(hLdrMod);
919	return rc;
920	}
921
922
923	SUPR3DECL(int) SUPR3FreeModule(void *pvImageBase)
924	{
925	/* fake */
926	if (RT_UNLIKELY(g_uSupFakeMode))
927	{
928	g_pvVMMR0 = NIL_RTR0PTR;
929	return VINF_SUCCESS;
930	}
931
932	/*
933	* Free the requested module.
934	*/
935	SUPLDRFREE Req;
936	Req.Hdr.u32Cookie = g_u32Cookie;
937	Req.Hdr.u32SessionCookie = g_u32SessionCookie;
938	Req.Hdr.cbIn = SUP_IOCTL_LDR_FREE_SIZE_IN;
939	Req.Hdr.cbOut = SUP_IOCTL_LDR_FREE_SIZE_OUT;
940	Req.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
941	Req.Hdr.rc = VERR_INTERNAL_ERROR;
942	Req.u.In.pvImageBase = (RTR0PTR)pvImageBase;
943	int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_FREE, &Req, SUP_IOCTL_LDR_FREE_SIZE);
944	if (RT_SUCCESS(rc))
945	rc = Req.Hdr.rc;
946	if ( RT_SUCCESS(rc)
947	&& (RTR0PTR)pvImageBase == g_pvVMMR0)
948	g_pvVMMR0 = NIL_RTR0PTR;
949	return rc;
950	}
951
952
953	SUPR3DECL(int) SUPR3GetSymbolR0(void pvImageBase, const char pszSymbol, void **ppvValue)
954	{
955	*ppvValue = NULL;
956
957	/* fake */
958	if (RT_UNLIKELY(g_uSupFakeMode))
959	{
960	ppvValue = (void )(uintptr_t)0xdeadf00d;
961	return VINF_SUCCESS;
962	}
963
964	/*
965	* Do ioctl.
966	*/
967	SUPLDRGETSYMBOL Req;
968	Req.Hdr.u32Cookie = g_u32Cookie;
969	Req.Hdr.u32SessionCookie = g_u32SessionCookie;
970	Req.Hdr.cbIn = SUP_IOCTL_LDR_GET_SYMBOL_SIZE_IN;
971	Req.Hdr.cbOut = SUP_IOCTL_LDR_GET_SYMBOL_SIZE_OUT;
972	Req.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
973	Req.Hdr.rc = VERR_INTERNAL_ERROR;
974	Req.u.In.pvImageBase = (RTR0PTR)pvImageBase;
975	size_t cchSymbol = strlen(pszSymbol);
976	if (cchSymbol >= sizeof(Req.u.In.szSymbol))
977	return VERR_SYMBOL_NOT_FOUND;
978	memcpy(Req.u.In.szSymbol, pszSymbol, cchSymbol + 1);
979	int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_GET_SYMBOL, &Req, SUP_IOCTL_LDR_GET_SYMBOL_SIZE);
980	if (RT_SUCCESS(rc))
981	rc = Req.Hdr.rc;
982	if (RT_SUCCESS(rc))
983	ppvValue = (void )Req.u.Out.pvSymbol;
984	return rc;
985	}
986
987
988	SUPR3DECL(int) SUPR3LoadVMM(const char *pszFilename, PRTERRINFO pErrInfo)
989	{
990	void *pvImageBase;
991	return SUPR3LoadModule(pszFilename, "VMMR0.r0", &pvImageBase, pErrInfo);
992	}
993
994
995	SUPR3DECL(int) SUPR3UnloadVMM(void)
996	{
997	return SUPR3FreeModule((void*)g_pvVMMR0);
998	}
999
1000
1001	/**
1002	* Worker for SUPR3HardenedLdrLoad and SUPR3HardenedLdrLoadAppPriv.
1003	*
1004	* @returns iprt status code.
1005	* @param pszFilename The full file name.
1006	* @param phLdrMod Where to store the handle to the loaded module.
1007	* @param fFlags See RTLDFLAGS_.
1008	* @param pErrInfo Where to return extended error information.
1009	* Optional.
1010	*
1011	*/
1012	static int supR3HardenedLdrLoadIt(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo)
1013	{
1014	#ifdef VBOX_WITH_HARDENING
1015	/*
1016	* Verify the image file.
1017	*/
1018	int rc = SUPR3HardenedVerifyInit();
1019	if (RT_FAILURE(rc))
1020	rc = supR3HardenedVerifyFixedFile(pszFilename, false /* fFatal */);
1021	if (RT_FAILURE(rc))
1022	{
1023	LogRel(("supR3HardenedLdrLoadIt: Verification of \"%s\" failed, rc=%Rrc\n", pszFilename, rc));
1024	return RTErrInfoSet(pErrInfo, rc, "supR3HardenedVerifyFixedFile failed");
1025	}
1026	#endif
1027
1028	/*
1029	* Try load it.
1030	*/
1031	return RTLdrLoadEx(pszFilename, phLdrMod, fFlags, pErrInfo);
1032	}
1033
1034
1035	SUPR3DECL(int) SUPR3HardenedLdrLoad(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo)
1036	{
1037	/*
1038	* Validate input.
1039	*/
1040	RTErrInfoClear(pErrInfo);
1041	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1042	AssertPtrReturn(phLdrMod, VERR_INVALID_POINTER);
1043	*phLdrMod = NIL_RTLDRMOD;
1044	AssertReturn(RTPathHavePath(pszFilename), VERR_INVALID_PARAMETER);
1045
1046	/*
1047	* Add the default extension if it's missing.
1048	*/
1049	if (!RTPathHasSuffix(pszFilename))
1050	{
1051	const char *pszSuff = RTLdrGetSuff();
1052	size_t cchSuff = strlen(pszSuff);
1053	size_t cchFilename = strlen(pszFilename);
1054	char psz = (char )alloca(cchFilename + cchSuff + 1);
1055	AssertReturn(psz, VERR_NO_TMP_MEMORY);
1056	memcpy(psz, pszFilename, cchFilename);
1057	memcpy(psz + cchFilename, pszSuff, cchSuff + 1);
1058	pszFilename = psz;
1059	}
1060
1061	/*
1062	* Pass it on to the common library loader.
1063	*/
1064	return supR3HardenedLdrLoadIt(pszFilename, phLdrMod, fFlags, pErrInfo);
1065	}
1066
1067
1068	SUPR3DECL(int) SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo)
1069	{
1070	LogFlow(("SUPR3HardenedLdrLoadAppPriv: pszFilename=%p:{%s} phLdrMod=%p fFlags=%08x pErrInfo=%p\n", pszFilename, pszFilename, phLdrMod, fFlags, pErrInfo));
1071
1072	/*
1073	* Validate input.
1074	*/
1075	RTErrInfoClear(pErrInfo);
1076	AssertPtrReturn(phLdrMod, VERR_INVALID_PARAMETER);
1077	*phLdrMod = NIL_RTLDRMOD;
1078	AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
1079	AssertMsgReturn(!RTPathHavePath(pszFilename), ("%s\n", pszFilename), VERR_INVALID_PARAMETER);
1080
1081	/*
1082	* Check the filename.
1083	*/
1084	size_t cchFilename = strlen(pszFilename);
1085	AssertMsgReturn(cchFilename < (RTPATH_MAX / 4) * 3, ("%zu\n", cchFilename), VERR_INVALID_PARAMETER);
1086
1087	const char *pszExt = "";
1088	size_t cchExt = 0;
1089	if (!RTPathHasSuffix(pszFilename))
1090	{
1091	pszExt = RTLdrGetSuff();
1092	cchExt = strlen(pszExt);
1093	}
1094
1095	/*
1096	* Construct the private arch path and check if the file exists.
1097	*/
1098	char szPath[RTPATH_MAX];
1099	int rc = RTPathAppPrivateArch(szPath, sizeof(szPath) - 1 - cchExt - cchFilename);
1100	AssertRCReturn(rc, rc);
1101
1102	char *psz = strchr(szPath, '\0');
1103	*psz++ = RTPATH_SLASH;
1104	memcpy(psz, pszFilename, cchFilename);
1105	psz += cchFilename;
1106	memcpy(psz, pszExt, cchExt + 1);
1107
1108	if (!RTPathExists(szPath))
1109	{
1110	LogRel(("SUPR3HardenedLdrLoadAppPriv: \"%s\" not found\n", szPath));
1111	return VERR_FILE_NOT_FOUND;
1112	}
1113
1114	/*
1115	* Pass it on to SUPR3HardenedLdrLoad.
1116	*/
1117	rc = SUPR3HardenedLdrLoad(szPath, phLdrMod, fFlags, pErrInfo);
1118
1119	LogFlow(("SUPR3HardenedLdrLoadAppPriv: returns %Rrc\n", rc));
1120	return rc;
1121	}
1122
1123
1124	SUPR3DECL(int) SUPR3HardenedLdrLoadPlugIn(const char *pszFilename, PRTLDRMOD phLdrMod, PRTERRINFO pErrInfo)
1125	{
1126	/*
1127	* Validate input.
1128	*/
1129	RTErrInfoClear(pErrInfo);
1130	AssertPtrReturn(phLdrMod, VERR_INVALID_PARAMETER);
1131	*phLdrMod = NIL_RTLDRMOD;
1132	AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
1133	AssertReturn(RTPathStartsWithRoot(pszFilename), VERR_INVALID_PARAMETER);
1134
1135	#ifdef VBOX_WITH_HARDENING
1136	/*
1137	* Verify the image file.
1138	*/
1139	int rc = supR3HardenedVerifyFile(pszFilename, RTHCUINTPTR_MAX, true /fMaybe3rdParty/, pErrInfo);
1140	if (RT_FAILURE(rc))
1141	{
1142	if (!RTErrInfoIsSet(pErrInfo))
1143	LogRel(("supR3HardenedVerifyFile: Verification of \"%s\" failed, rc=%Rrc\n", pszFilename, rc));
1144	return rc;
1145	}
1146	#endif
1147
1148	/*
1149	* Try load it.
1150	*/
1151	return RTLdrLoadEx(pszFilename, phLdrMod, RTLDRLOAD_FLAGS_LOCAL, pErrInfo);
1152	}
1153

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source: vbox/trunk/src/VBox/HostDrivers/Support/SUPLibLdr.cpp@ 100108

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