SUPLibLdr.cpp@ 108195

Last change on this file since 108195 was 107675, checked in by vboxsync, 6 weeks ago
HostDrivers/Support/SUPLibLdr.cpp: Remove unused assignment, bugref:3409
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1	/* $Id: SUPLibLdr.cpp 107675 2025-01-10 15:51:54Z vboxsync $ */
2	/** @file
3	* VirtualBox Support Library - Loader related bits.
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 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	pArgs->uEndRva = uRvaSeg + cbMapped;
483	return VINF_SUCCESS; /* New segment was smaller than a page. */
484	}
485	cbMapped -= cbCommon;
486	uRvaSeg += cbCommon;
487	Assert(uRvaSeg - pArgs->uStartRva == PAGE_SIZE);
488	}
489
490	/* The current segment should end where the new one starts, no gaps. */
491	pArgs->uEndRva = uRvaSeg;
492
493	/* Emit the current segment */
494	Log2(("supLoadModuleCompileSegmentsCB: SUP Seg #%u: %#x LB %#x prot %#x\n",
495	pArgs->iSegs, pArgs->uStartRva, pArgs->uEndRva - pArgs->uStartRva, pArgs->fProt));
496	if (pArgs->paSegs)
497	{
498	AssertReturn(pArgs->iSegs < pArgs->cSegsAlloc, VERR_INTERNAL_ERROR_5);
499	pArgs->paSegs[pArgs->iSegs].off = pArgs->uStartRva;
500	pArgs->paSegs[pArgs->iSegs].cb = pArgs->uEndRva - pArgs->uStartRva;
501	pArgs->paSegs[pArgs->iSegs].fProt = pArgs->fProt;
502	pArgs->paSegs[pArgs->iSegs].fUnused = 0;
503	}
504	pArgs->iSegs++;
505	}
506	/* else: current segment is empty */
507
508	/* Start the new segment. */
509	Assert(!(uRvaSeg & PAGE_OFFSET_MASK));
510	pArgs->fProt = fProt;
511	pArgs->uStartRva = uRvaSeg;
512	pArgs->uEndRva = uRvaSeg + cbMapped;
513	return VINF_SUCCESS;
514	}
515
516
517	/**
518	* Worker for supLoadModule().
519	*/
520	static int supLoadModuleInner(RTLDRMOD hLdrMod, PSUPLDRLOAD pLoadReq, uint32_t cbImageWithEverything,
521	RTR0PTR uImageBase, size_t cbImage, const char pszModule, const char pszFilename,
522	bool fNativeLoader, bool fIsVMMR0, const char *pszSrvReqHandler,
523	uint32_t offSymTab, uint32_t cSymbols,
524	uint32_t offStrTab, size_t cbStrTab,
525	uint32_t offSegTab, uint32_t cSegments,
526	PRTERRINFO pErrInfo)
527	{
528	/*
529	* Get the image bits.
530	*/
531	SUPLDRRESIMPARGS Args = { pszModule, pErrInfo, 0 };
532	int rc = RTLdrGetBits(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase, supLoadModuleResolveImport, &Args);
533	if (RT_FAILURE(rc))
534	{
535	LogRel(("SUP: RTLdrGetBits failed for %s (%s). rc=%Rrc\n", pszModule, pszFilename, rc));
536	if (!RTErrInfoIsSet(pErrInfo))
537	RTErrInfoSetF(pErrInfo, rc, "RTLdrGetBits failed");
538	return rc;
539	}
540
541	/*
542	* Get the entry points.
543	*/
544	RTUINTPTR VMMR0EntryFast = 0;
545	RTUINTPTR VMMR0EntryEx = 0;
546	RTUINTPTR SrvReqHandler = 0;
547	RTUINTPTR ModuleInit = 0;
548	RTUINTPTR ModuleTerm = 0;
549	const char *pszEp = NULL;
550	if (fIsVMMR0)
551	{
552	rc = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
553	UINT32_MAX, pszEp = "VMMR0EntryFast", &VMMR0EntryFast);
554	if (RT_SUCCESS(rc))
555	rc = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
556	UINT32_MAX, pszEp = "VMMR0EntryEx", &VMMR0EntryEx);
557	}
558	else if (pszSrvReqHandler)
559	rc = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
560	UINT32_MAX, pszEp = pszSrvReqHandler, &SrvReqHandler);
561	if (RT_SUCCESS(rc))
562	{
563	int rc2 = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
564	UINT32_MAX, pszEp = "ModuleInit", &ModuleInit);
565	if (RT_FAILURE(rc2))
566	ModuleInit = 0;
567
568	rc2 = RTLdrGetSymbolEx(hLdrMod, &pLoadReq->u.In.abImage[0], uImageBase,
569	UINT32_MAX, pszEp = "ModuleTerm", &ModuleTerm);
570	if (RT_FAILURE(rc2))
571	ModuleTerm = 0;
572	}
573	if (RT_FAILURE(rc))
574	{
575	LogRel(("SUP: Failed to get entry point '%s' for %s (%s) rc=%Rrc\n", pszEp, pszModule, pszFilename, rc));
576	return RTErrInfoSetF(pErrInfo, rc, "Failed to resolve entry point '%s'", pszEp);
577	}
578
579	/*
580	* Create the symbol and string tables.
581	*/
582	SUPLDRCREATETABSARGS CreateArgs;
583	CreateArgs.cbImage = cbImage;
584	CreateArgs.pSym = (PSUPLDRSYM)&pLoadReq->u.In.abImage[offSymTab];
585	CreateArgs.pszBase = (char *)&pLoadReq->u.In.abImage[offStrTab];
586	CreateArgs.psz = CreateArgs.pszBase;
587	rc = RTLdrEnumSymbols(hLdrMod, 0, NULL, 0, supLoadModuleCreateTabsCB, &CreateArgs);
588	if (RT_FAILURE(rc))
589	{
590	LogRel(("SUP: RTLdrEnumSymbols failed for %s (%s) rc=%Rrc\n", pszModule, pszFilename, rc));
591	return RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSymbols #2 failed");
592	}
593	AssertRelease((size_t)(CreateArgs.psz - CreateArgs.pszBase) <= cbStrTab);
594	AssertRelease((size_t)(CreateArgs.pSym - (PSUPLDRSYM)&pLoadReq->u.In.abImage[offSymTab]) <= cSymbols);
595
596	/*
597	* Create the segment table.
598	*/
599	SUPLDRCOMPSEGTABARGS SegArgs;
600	SegArgs.uStartRva = 0;
601	SegArgs.uEndRva = 0;
602	SegArgs.fProt = RTMEM_PROT_READ;
603	SegArgs.iSegs = 0;
604	SegArgs.cSegsAlloc = cSegments;
605	SegArgs.paSegs = (PSUPLDRSEG)&pLoadReq->u.In.abImage[offSegTab];
606	SegArgs.pErrInfo = pErrInfo;
607	rc = RTLdrEnumSegments(hLdrMod, supLoadModuleCompileSegmentsCB, &SegArgs);
608	if (RT_FAILURE(rc))
609	{
610	LogRel(("SUP: RTLdrEnumSegments failed for %s (%s) rc=%Rrc\n", pszModule, pszFilename, rc));
611	return RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSegments #2 failed");
612	}
613	SegArgs.uEndRva = (uint32_t)cbImage;
614	AssertReturn(SegArgs.uEndRva == cbImage, VERR_OUT_OF_RANGE);
615	if (SegArgs.uEndRva > SegArgs.uStartRva)
616	{
617	SegArgs.paSegs[SegArgs.iSegs].off = SegArgs.uStartRva;
618	SegArgs.paSegs[SegArgs.iSegs].cb = SegArgs.uEndRva - SegArgs.uStartRva;
619	SegArgs.paSegs[SegArgs.iSegs].fProt = SegArgs.fProt;
620	SegArgs.paSegs[SegArgs.iSegs].fUnused = 0;
621	SegArgs.iSegs++;
622	}
623	for (uint32_t i = 0; i < SegArgs.iSegs; i++)
624	LogRel(("SUP: seg #%u: %c%c%c %#010RX32 LB %#010RX32\n", i, /** @todo LogRel2 */
625	SegArgs.paSegs[i].fProt & SUPLDR_PROT_READ ? 'R' : ' ',
626	SegArgs.paSegs[i].fProt & SUPLDR_PROT_WRITE ? 'W' : ' ',
627	SegArgs.paSegs[i].fProt & SUPLDR_PROT_EXEC ? 'X' : ' ',
628	SegArgs.paSegs[i].off, SegArgs.paSegs[i].cb));
629	AssertRelease(SegArgs.iSegs == cSegments);
630	AssertRelease(SegArgs.cSegsAlloc == cSegments);
631
632	/*
633	* Upload the image.
634	*/
635	pLoadReq->Hdr.u32Cookie = g_u32Cookie;
636	pLoadReq->Hdr.u32SessionCookie = g_u32SessionCookie;
637	pLoadReq->Hdr.cbIn = SUP_IOCTL_LDR_LOAD_SIZE_IN(cbImageWithEverything);
638	pLoadReq->Hdr.cbOut = SUP_IOCTL_LDR_LOAD_SIZE_OUT;
639	pLoadReq->Hdr.fFlags = SUPREQHDR_FLAGS_MAGIC \| SUPREQHDR_FLAGS_EXTRA_IN;
640	pLoadReq->Hdr.rc = VERR_INTERNAL_ERROR;
641
642	pLoadReq->u.In.pfnModuleInit = (RTR0PTR)ModuleInit;
643	pLoadReq->u.In.pfnModuleTerm = (RTR0PTR)ModuleTerm;
644	if (fIsVMMR0)
645	{
646	pLoadReq->u.In.eEPType = SUPLDRLOADEP_VMMR0;
647	pLoadReq->u.In.EP.VMMR0.pvVMMR0EntryFast = (RTR0PTR)VMMR0EntryFast;
648	pLoadReq->u.In.EP.VMMR0.pvVMMR0EntryEx = (RTR0PTR)VMMR0EntryEx;
649	}
650	else if (pszSrvReqHandler)
651	{
652	pLoadReq->u.In.eEPType = SUPLDRLOADEP_SERVICE;
653	pLoadReq->u.In.EP.Service.pfnServiceReq = (RTR0PTR)SrvReqHandler;
654	pLoadReq->u.In.EP.Service.apvReserved[0] = NIL_RTR0PTR;
655	pLoadReq->u.In.EP.Service.apvReserved[1] = NIL_RTR0PTR;
656	pLoadReq->u.In.EP.Service.apvReserved[2] = NIL_RTR0PTR;
657	}
658	else
659	pLoadReq->u.In.eEPType = SUPLDRLOADEP_NOTHING;
660	pLoadReq->u.In.offStrTab = offStrTab;
661	pLoadReq->u.In.cbStrTab = (uint32_t)cbStrTab;
662	AssertRelease(pLoadReq->u.In.cbStrTab == cbStrTab);
663	pLoadReq->u.In.cbImageBits = (uint32_t)cbImage;
664	pLoadReq->u.In.offSymbols = offSymTab;
665	pLoadReq->u.In.cSymbols = cSymbols;
666	pLoadReq->u.In.offSegments = offSegTab;
667	pLoadReq->u.In.cSegments = cSegments;
668	pLoadReq->u.In.cbImageWithEverything = cbImageWithEverything;
669	pLoadReq->u.In.pvImageBase = uImageBase;
670	pLoadReq->u.In.fFlags = Args.fLoadReq;
671	if (!g_uSupFakeMode)
672	{
673	rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_LOAD, pLoadReq, SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything));
674	if (RT_SUCCESS(rc))
675	rc = pLoadReq->Hdr.rc;
676	else
677	LogRel(("SUP: SUP_IOCTL_LDR_LOAD ioctl for %s (%s) failed rc=%Rrc\n", pszModule, pszFilename, rc));
678	}
679	else
680	rc = VINF_SUCCESS;
681	if ( RT_SUCCESS(rc)
682	\|\| rc == VERR_ALREADY_LOADED /* A competing process. */
683	)
684	{
685	LogRel(("SUP: Loaded %s (%s) at %#RKv - ModuleInit at %RKv and ModuleTerm at %RKv%s\n",
686	pszModule, pszFilename, uImageBase, (RTR0PTR)ModuleInit, (RTR0PTR)ModuleTerm,
687	fNativeLoader ? " using the native ring-0 loader" : ""));
688	if (fIsVMMR0)
689	{
690	g_pvVMMR0 = uImageBase;
691	LogRel(("SUP: VMMR0EntryEx located at %RKv and VMMR0EntryFast at %RKv\n", (RTR0PTR)VMMR0EntryEx, (RTR0PTR)VMMR0EntryFast));
692	}
693	#ifdef RT_OS_WINDOWS
694	LogRel(("SUP: windbg> .reload /f %s=%#RKv\n", pszFilename, uImageBase));
695	#endif
696	return VINF_SUCCESS;
697	}
698
699	/*
700	* Failed, bail out.
701	*/
702	LogRel(("SUP: Loading failed for %s (%s) rc=%Rrc\n", pszModule, pszFilename, rc));
703	if ( pLoadReq->u.Out.uErrorMagic == SUPLDRLOAD_ERROR_MAGIC
704	&& pLoadReq->u.Out.szError[0] != '\0')
705	{
706	LogRel(("SUP: %s\n", pLoadReq->u.Out.szError));
707	return RTErrInfoSet(pErrInfo, rc, pLoadReq->u.Out.szError);
708	}
709	return RTErrInfoSet(pErrInfo, rc, "SUP_IOCTL_LDR_LOAD failed");
710	}
711
712
713	/**
714	* Worker for SUPR3LoadModule().
715	*
716	* @returns VBox status code.
717	* @param pszFilename Name of the VMMR0 image file
718	* @param pszModule The modulen name.
719	* @param pszSrvReqHandler The service request handler symbol name,
720	* optional.
721	* @param pErrInfo Where to store detailed error info. Optional.
722	* @param ppvImageBase Where to return the load address.
723	*/
724	static int supLoadModule(const char pszFilename, const char pszModule, const char *pszSrvReqHandler,
725	PRTERRINFO pErrInfo, void **ppvImageBase)
726	{
727	SUPLDROPEN OpenReq;
728
729	/*
730	* Validate input.
731	*/
732	AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
733	AssertPtrReturn(pszModule, VERR_INVALID_PARAMETER);
734	AssertPtrReturn(ppvImageBase, VERR_INVALID_PARAMETER);
735	AssertReturn(strlen(pszModule) < sizeof(OpenReq.u.In.szName), VERR_FILENAME_TOO_LONG);
736
737	const bool fIsVMMR0 = !strcmp(pszModule, "VMMR0.r0");
738	AssertReturn(!pszSrvReqHandler \|\| !fIsVMMR0, VERR_INTERNAL_ERROR);
739	*ppvImageBase = NULL;
740
741	/*
742	* First try open it w/o preparing a binary for loading.
743	*
744	* This will be a lot faster if it's already loaded, and it will
745	* avoid fixup issues when using wrapped binaries. With wrapped
746	* ring-0 binaries not all binaries need to be wrapped, so trying
747	* to load it ourselves is not a bug, but intentional behaviour
748	* (even it it asserts in the loader code).
749	*/
750	OpenReq.Hdr.u32Cookie = g_u32Cookie;
751	OpenReq.Hdr.u32SessionCookie = g_u32SessionCookie;
752	OpenReq.Hdr.cbIn = SUP_IOCTL_LDR_OPEN_SIZE_IN;
753	OpenReq.Hdr.cbOut = SUP_IOCTL_LDR_OPEN_SIZE_OUT;
754	OpenReq.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
755	OpenReq.Hdr.rc = VERR_INTERNAL_ERROR;
756	OpenReq.u.In.cbImageWithEverything = 0;
757	OpenReq.u.In.cbImageBits = 0;
758	strcpy(OpenReq.u.In.szName, pszModule);
759	int rc = RTPathAbs(pszFilename, OpenReq.u.In.szFilename, sizeof(OpenReq.u.In.szFilename));
760	if (RT_FAILURE(rc))
761	return rc;
762	if ( (SUPDRV_IOC_VERSION & 0xffff0000) != 0x00300000
763	\|\| g_uSupSessionVersion >= 0x00300001)
764	{
765	if (!g_uSupFakeMode)
766	{
767	rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_OPEN, &OpenReq, SUP_IOCTL_LDR_OPEN_SIZE);
768	if (RT_SUCCESS(rc))
769	rc = OpenReq.Hdr.rc;
770	}
771	else
772	{
773	OpenReq.u.Out.fNeedsLoading = true;
774	OpenReq.u.Out.pvImageBase = 0xef423420;
775	}
776	ppvImageBase = (void )OpenReq.u.Out.pvImageBase;
777	if (rc != VERR_MODULE_NOT_FOUND)
778	{
779	if (fIsVMMR0)
780	g_pvVMMR0 = OpenReq.u.Out.pvImageBase;
781	LogRel(("SUP: Opened %s (%s) at %#RKv%s.\n", pszModule, pszFilename, OpenReq.u.Out.pvImageBase,
782	OpenReq.u.Out.fNativeLoader ? " loaded by the native ring-0 loader" : ""));
783	#ifdef RT_OS_WINDOWS
784	LogRel(("SUP: windbg> .reload /f %s=%#RKv\n", pszFilename, OpenReq.u.Out.pvImageBase));
785	#endif
786	return rc;
787	}
788	}
789
790	/*
791	* Open image file and figure its size.
792	*/
793	RTLDRMOD hLdrMod;
794	rc = RTLdrOpenEx(OpenReq.u.In.szFilename, 0 /fFlags/, RTLDRARCH_HOST, &hLdrMod, pErrInfo);
795	if (RT_FAILURE(rc))
796	{
797	LogRel(("SUP: RTLdrOpen failed for %s (%s) %Rrc\n", pszModule, OpenReq.u.In.szFilename, rc));
798	return rc;
799	}
800
801	SUPLDRCALCSIZEARGS CalcArgs;
802	CalcArgs.cbStrings = 0;
803	CalcArgs.cSymbols = 0;
804	CalcArgs.cbImage = RTLdrSize(hLdrMod);
805	rc = RTLdrEnumSymbols(hLdrMod, 0, NULL, 0, supLoadModuleCalcSizeCB, &CalcArgs);
806	if (RT_SUCCESS(rc))
807	{
808	/*
809	* Figure out the number of segments needed first.
810	*/
811	SUPLDRCOMPSEGTABARGS SegArgs;
812	SegArgs.uStartRva = 0;
813	SegArgs.uEndRva = 0;
814	SegArgs.fProt = RTMEM_PROT_READ;
815	SegArgs.iSegs = 0;
816	SegArgs.cSegsAlloc = 0;
817	SegArgs.paSegs = NULL;
818	SegArgs.pErrInfo = pErrInfo;
819	rc = RTLdrEnumSegments(hLdrMod, supLoadModuleCompileSegmentsCB, &SegArgs);
820	if (RT_SUCCESS(rc))
821	{
822	Assert(SegArgs.uEndRva <= RTLdrSize(hLdrMod));
823	SegArgs.uEndRva = (uint32_t)CalcArgs.cbImage; /* overflow is checked later */
824	if (SegArgs.uEndRva > SegArgs.uStartRva)
825	{
826	Log2(("supLoadModule: SUP Seg #%u: %#x LB %#x prot %#x\n",
827	SegArgs.iSegs, SegArgs.uStartRva, SegArgs.uEndRva - SegArgs.uStartRva, SegArgs.fProt));
828	SegArgs.iSegs++;
829	}
830
831	const uint32_t offSymTab = RT_ALIGN_32(CalcArgs.cbImage, 8);
832	const uint32_t offStrTab = offSymTab + CalcArgs.cSymbols * sizeof(SUPLDRSYM);
833	const uint32_t offSegTab = RT_ALIGN_32(offStrTab + CalcArgs.cbStrings, 8);
834	const uint32_t cbImageWithEverything = RT_ALIGN_32(offSegTab + sizeof(SUPLDRSEG) * SegArgs.iSegs, 8);
835
836	/*
837	* Open the R0 image.
838	*/
839	OpenReq.Hdr.u32Cookie = g_u32Cookie;
840	OpenReq.Hdr.u32SessionCookie = g_u32SessionCookie;
841	OpenReq.Hdr.cbIn = SUP_IOCTL_LDR_OPEN_SIZE_IN;
842	OpenReq.Hdr.cbOut = SUP_IOCTL_LDR_OPEN_SIZE_OUT;
843	OpenReq.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
844	OpenReq.Hdr.rc = VERR_INTERNAL_ERROR;
845	OpenReq.u.In.cbImageWithEverything = cbImageWithEverything;
846	OpenReq.u.In.cbImageBits = (uint32_t)CalcArgs.cbImage;
847	strcpy(OpenReq.u.In.szName, pszModule);
848	rc = RTPathAbs(pszFilename, OpenReq.u.In.szFilename, sizeof(OpenReq.u.In.szFilename));
849	AssertRC(rc);
850	if (RT_SUCCESS(rc))
851	{
852	if (!g_uSupFakeMode)
853	{
854	rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_OPEN, &OpenReq, SUP_IOCTL_LDR_OPEN_SIZE);
855	if (RT_SUCCESS(rc))
856	rc = OpenReq.Hdr.rc;
857	}
858	else
859	{
860	OpenReq.u.Out.fNeedsLoading = true;
861	OpenReq.u.Out.pvImageBase = 0xef423420;
862	}
863	}
864	ppvImageBase = (void )OpenReq.u.Out.pvImageBase;
865	if ( RT_SUCCESS(rc)
866	&& OpenReq.u.Out.fNeedsLoading)
867	{
868	/*
869	* We need to load it.
870	*
871	* Allocate the request and pass it to an inner work function
872	* that populates it and sends it off to the driver.
873	*/
874	const uint32_t cbLoadReq = SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything);
875	PSUPLDRLOAD pLoadReq = (PSUPLDRLOAD)RTMemTmpAlloc(cbLoadReq);
876	if (pLoadReq)
877	{
878	rc = supLoadModuleInner(hLdrMod, pLoadReq, cbImageWithEverything, OpenReq.u.Out.pvImageBase, CalcArgs.cbImage,
879	pszModule, pszFilename, OpenReq.u.Out.fNativeLoader, fIsVMMR0, pszSrvReqHandler,
880	offSymTab, CalcArgs.cSymbols,
881	offStrTab, CalcArgs.cbStrings,
882	offSegTab, SegArgs.iSegs,
883	pErrInfo);
884	RTMemTmpFree(pLoadReq);
885	}
886	else
887	{
888	AssertMsgFailed(("failed to allocated %u bytes for SUPLDRLOAD_IN structure!\n", SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything)));
889	rc = RTErrInfoSetF(pErrInfo, VERR_NO_TMP_MEMORY, "Failed to allocate %u bytes for the load request",
890	SUP_IOCTL_LDR_LOAD_SIZE(cbImageWithEverything));
891	}
892	}
893	/*
894	* Already loaded?
895	*/
896	else if (RT_SUCCESS(rc))
897	{
898	if (fIsVMMR0)
899	g_pvVMMR0 = OpenReq.u.Out.pvImageBase;
900	LogRel(("SUP: Opened %s (%s) at %#RKv%s.\n", pszModule, pszFilename, OpenReq.u.Out.pvImageBase,
901	OpenReq.u.Out.fNativeLoader ? " loaded by the native ring-0 loader" : ""));
902	#ifdef RT_OS_WINDOWS
903	LogRel(("SUP: windbg> .reload /f %s=%#RKv\n", pszFilename, OpenReq.u.Out.pvImageBase));
904	#endif
905	}
906	/*
907	* No, failed.
908	*/
909	else
910	RTErrInfoSet(pErrInfo, rc, "SUP_IOCTL_LDR_OPEN failed");
911	}
912	else if (!RTErrInfoIsSet(pErrInfo) && pErrInfo)
913	RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSegments #1 failed");
914	}
915	else
916	RTErrInfoSetF(pErrInfo, rc, "RTLdrEnumSymbols #1 failed");
917	RTLdrClose(hLdrMod);
918	return rc;
919	}
920
921
922	SUPR3DECL(int) SUPR3FreeModule(void *pvImageBase)
923	{
924	/* fake */
925	if (RT_UNLIKELY(g_uSupFakeMode))
926	{
927	g_pvVMMR0 = NIL_RTR0PTR;
928	return VINF_SUCCESS;
929	}
930
931	/*
932	* Free the requested module.
933	*/
934	SUPLDRFREE Req;
935	Req.Hdr.u32Cookie = g_u32Cookie;
936	Req.Hdr.u32SessionCookie = g_u32SessionCookie;
937	Req.Hdr.cbIn = SUP_IOCTL_LDR_FREE_SIZE_IN;
938	Req.Hdr.cbOut = SUP_IOCTL_LDR_FREE_SIZE_OUT;
939	Req.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
940	Req.Hdr.rc = VERR_INTERNAL_ERROR;
941	Req.u.In.pvImageBase = (RTR0PTR)pvImageBase;
942	int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_FREE, &Req, SUP_IOCTL_LDR_FREE_SIZE);
943	if (RT_SUCCESS(rc))
944	rc = Req.Hdr.rc;
945	if ( RT_SUCCESS(rc)
946	&& (RTR0PTR)pvImageBase == g_pvVMMR0)
947	g_pvVMMR0 = NIL_RTR0PTR;
948	return rc;
949	}
950
951
952	SUPR3DECL(int) SUPR3GetSymbolR0(void pvImageBase, const char pszSymbol, void **ppvValue)
953	{
954	*ppvValue = NULL;
955
956	/* fake */
957	if (RT_UNLIKELY(g_uSupFakeMode))
958	{
959	ppvValue = (void )(uintptr_t)0xdeadf00d;
960	return VINF_SUCCESS;
961	}
962
963	/*
964	* Do ioctl.
965	*/
966	SUPLDRGETSYMBOL Req;
967	Req.Hdr.u32Cookie = g_u32Cookie;
968	Req.Hdr.u32SessionCookie = g_u32SessionCookie;
969	Req.Hdr.cbIn = SUP_IOCTL_LDR_GET_SYMBOL_SIZE_IN;
970	Req.Hdr.cbOut = SUP_IOCTL_LDR_GET_SYMBOL_SIZE_OUT;
971	Req.Hdr.fFlags = SUPREQHDR_FLAGS_DEFAULT;
972	Req.Hdr.rc = VERR_INTERNAL_ERROR;
973	Req.u.In.pvImageBase = (RTR0PTR)pvImageBase;
974	size_t cchSymbol = strlen(pszSymbol);
975	if (cchSymbol >= sizeof(Req.u.In.szSymbol))
976	return VERR_SYMBOL_NOT_FOUND;
977	memcpy(Req.u.In.szSymbol, pszSymbol, cchSymbol + 1);
978	int rc = suplibOsIOCtl(&g_supLibData, SUP_IOCTL_LDR_GET_SYMBOL, &Req, SUP_IOCTL_LDR_GET_SYMBOL_SIZE);
979	if (RT_SUCCESS(rc))
980	rc = Req.Hdr.rc;
981	if (RT_SUCCESS(rc))
982	ppvValue = (void )Req.u.Out.pvSymbol;
983	return rc;
984	}
985
986
987	SUPR3DECL(int) SUPR3LoadVMM(const char *pszFilename, PRTERRINFO pErrInfo)
988	{
989	void *pvImageBase;
990	return SUPR3LoadModule(pszFilename, "VMMR0.r0", &pvImageBase, pErrInfo);
991	}
992
993
994	SUPR3DECL(int) SUPR3UnloadVMM(void)
995	{
996	return SUPR3FreeModule((void*)g_pvVMMR0);
997	}
998
999
1000	/**
1001	* Worker for SUPR3HardenedLdrLoad and SUPR3HardenedLdrLoadAppPriv.
1002	*
1003	* @returns iprt status code.
1004	* @param pszFilename The full file name.
1005	* @param phLdrMod Where to store the handle to the loaded module.
1006	* @param fFlags See RTLDFLAGS_.
1007	* @param pErrInfo Where to return extended error information.
1008	* Optional.
1009	*
1010	*/
1011	static int supR3HardenedLdrLoadIt(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo)
1012	{
1013	#ifdef VBOX_WITH_HARDENING
1014	/*
1015	* Verify the image file.
1016	*/
1017	int rc = SUPR3HardenedVerifyInit();
1018	if (RT_FAILURE(rc))
1019	rc = supR3HardenedVerifyFixedFile(pszFilename, false /* fFatal */);
1020	if (RT_FAILURE(rc))
1021	{
1022	LogRel(("supR3HardenedLdrLoadIt: Verification of \"%s\" failed, rc=%Rrc\n", pszFilename, rc));
1023	return RTErrInfoSet(pErrInfo, rc, "supR3HardenedVerifyFixedFile failed");
1024	}
1025	#endif
1026
1027	/*
1028	* Try load it.
1029	*/
1030	return RTLdrLoadEx(pszFilename, phLdrMod, fFlags, pErrInfo);
1031	}
1032
1033
1034	SUPR3DECL(int) SUPR3HardenedLdrLoad(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo)
1035	{
1036	/*
1037	* Validate input.
1038	*/
1039	RTErrInfoClear(pErrInfo);
1040	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1041	AssertPtrReturn(phLdrMod, VERR_INVALID_POINTER);
1042	*phLdrMod = NIL_RTLDRMOD;
1043	AssertReturn(RTPathHavePath(pszFilename), VERR_INVALID_PARAMETER);
1044
1045	/*
1046	* Add the default extension if it's missing.
1047	*/
1048	if (!RTPathHasSuffix(pszFilename))
1049	{
1050	const char *pszSuff = RTLdrGetSuff();
1051	size_t cchSuff = strlen(pszSuff);
1052	size_t cchFilename = strlen(pszFilename);
1053	char psz = (char )alloca(cchFilename + cchSuff + 1);
1054	AssertReturn(psz, VERR_NO_TMP_MEMORY);
1055	memcpy(psz, pszFilename, cchFilename);
1056	memcpy(psz + cchFilename, pszSuff, cchSuff + 1);
1057	pszFilename = psz;
1058	}
1059
1060	/*
1061	* Pass it on to the common library loader.
1062	*/
1063	return supR3HardenedLdrLoadIt(pszFilename, phLdrMod, fFlags, pErrInfo);
1064	}
1065
1066
1067	SUPR3DECL(int) SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo)
1068	{
1069	LogFlow(("SUPR3HardenedLdrLoadAppPriv: pszFilename=%p:{%s} phLdrMod=%p fFlags=%08x pErrInfo=%p\n", pszFilename, pszFilename, phLdrMod, fFlags, pErrInfo));
1070
1071	/*
1072	* Validate input.
1073	*/
1074	RTErrInfoClear(pErrInfo);
1075	AssertPtrReturn(phLdrMod, VERR_INVALID_PARAMETER);
1076	*phLdrMod = NIL_RTLDRMOD;
1077	AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
1078	AssertMsgReturn(!RTPathHavePath(pszFilename), ("%s\n", pszFilename), VERR_INVALID_PARAMETER);
1079
1080	/*
1081	* Check the filename.
1082	*/
1083	size_t cchFilename = strlen(pszFilename);
1084	AssertMsgReturn(cchFilename < (RTPATH_MAX / 4) * 3, ("%zu\n", cchFilename), VERR_INVALID_PARAMETER);
1085
1086	const char *pszExt = "";
1087	size_t cchExt = 0;
1088	if (!RTPathHasSuffix(pszFilename))
1089	{
1090	pszExt = RTLdrGetSuff();
1091	cchExt = strlen(pszExt);
1092	}
1093
1094	/*
1095	* Construct the private arch path and check if the file exists.
1096	*/
1097	char szPath[RTPATH_MAX];
1098	int rc = RTPathAppPrivateArch(szPath, sizeof(szPath) - 1 - cchExt - cchFilename);
1099	AssertRCReturn(rc, rc);
1100
1101	char *psz = strchr(szPath, '\0');
1102	*psz++ = RTPATH_SLASH;
1103	memcpy(psz, pszFilename, cchFilename);
1104	psz += cchFilename;
1105	memcpy(psz, pszExt, cchExt + 1);
1106
1107	if (!RTPathExists(szPath))
1108	{
1109	LogRel(("SUPR3HardenedLdrLoadAppPriv: \"%s\" not found\n", szPath));
1110	return VERR_FILE_NOT_FOUND;
1111	}
1112
1113	/*
1114	* Pass it on to SUPR3HardenedLdrLoad.
1115	*/
1116	rc = SUPR3HardenedLdrLoad(szPath, phLdrMod, fFlags, pErrInfo);
1117
1118	LogFlow(("SUPR3HardenedLdrLoadAppPriv: returns %Rrc\n", rc));
1119	return rc;
1120	}
1121
1122
1123	SUPR3DECL(int) SUPR3HardenedLdrLoadPlugIn(const char *pszFilename, PRTLDRMOD phLdrMod, PRTERRINFO pErrInfo)
1124	{
1125	/*
1126	* Validate input.
1127	*/
1128	RTErrInfoClear(pErrInfo);
1129	AssertPtrReturn(phLdrMod, VERR_INVALID_PARAMETER);
1130	*phLdrMod = NIL_RTLDRMOD;
1131	AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
1132	AssertReturn(RTPathStartsWithRoot(pszFilename), VERR_INVALID_PARAMETER);
1133
1134	#ifdef VBOX_WITH_HARDENING
1135	/*
1136	* Verify the image file.
1137	*/
1138	int rc = supR3HardenedVerifyFile(pszFilename, RTHCUINTPTR_MAX, true /fMaybe3rdParty/, pErrInfo);
1139	if (RT_FAILURE(rc))
1140	{
1141	if (!RTErrInfoIsSet(pErrInfo))
1142	LogRel(("supR3HardenedVerifyFile: Verification of \"%s\" failed, rc=%Rrc\n", pszFilename, rc));
1143	return rc;
1144	}
1145	#endif
1146
1147	/*
1148	* Try load it.
1149	*/
1150	return RTLdrLoadEx(pszFilename, phLdrMod, RTLDRLOAD_FLAGS_LOCAL, pErrInfo);
1151	}
1152

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source: vbox/trunk/src/VBox/HostDrivers/Support/SUPLibLdr.cpp@ 108195

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