ldr.h@ 53447

Last change on this file since 53447 was 52403, checked in by vboxsync, 10 years ago
SUP,IPRT: Extended RTLdrQueryPropEx with a pvBits parameter, RTLDRPROP_IMPORT_COUNT and RTLDRPROP_IMPORT_MODULE. Hook LdrLoadDll to validate DLLs before they get to NtCreateSection and the loader code/data can be messed up (windows 7 / 32-bit crash). Allow the kernel to buffer the log file, no real need that each write hits the disk.
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File size: 41.3 KB

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1	/** @file
2	* IPRT - Loader.
3	*/
4
5	/*
6	* Copyright (C) 2006-2014 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef ___iprt_ldr_h
27	#define ___iprt_ldr_h
28
29	#include <iprt/cdefs.h>
30	#include <iprt/types.h>
31
32
33	/** @defgroup grp_ldr RTLdr - Loader
34	* @ingroup grp_rt
35	* @{
36	*/
37
38
39	RT_C_DECLS_BEGIN
40
41	/** Loader address (unsigned integer). */
42	typedef RTUINTPTR RTLDRADDR;
43	/** Pointer to a loader address. */
44	typedef RTLDRADDR *PRTLDRADDR;
45	/** Pointer to a const loader address. */
46	typedef RTLDRADDR const *PCRTLDRADDR;
47	/** The max loader address value. */
48	#define RTLDRADDR_MAX RTUINTPTR_MAX
49	/** NIL loader address value. */
50	#define NIL_RTLDRADDR RTLDRADDR_MAX
51
52
53	/**
54	* Loader module format.
55	*/
56	typedef enum RTLDRFMT
57	{
58	/** The usual invalid 0 format. */
59	RTLDRFMT_INVALID = 0,
60	/** The native OS loader. */
61	RTLDRFMT_NATIVE,
62	/** The AOUT loader. */
63	RTLDRFMT_AOUT,
64	/** The ELF loader. */
65	RTLDRFMT_ELF,
66	/** The LX loader. */
67	RTLDRFMT_LX,
68	/** The Mach-O loader. */
69	RTLDRFMT_MACHO,
70	/** The PE loader. */
71	RTLDRFMT_PE,
72	/** The end of the valid format values (exclusive). */
73	RTLDRFMT_END,
74	/** Hack to blow the type up to 32-bit. */
75	RTLDRFMT_32BIT_HACK = 0x7fffffff
76	} RTLDRFMT;
77
78
79	/**
80	* Loader module type.
81	*/
82	typedef enum RTLDRTYPE
83	{
84	/** The usual invalid 0 type. */
85	RTLDRTYPE_INVALID = 0,
86	/** Object file. */
87	RTLDRTYPE_OBJECT,
88	/** Executable module, fixed load address. */
89	RTLDRTYPE_EXECUTABLE_FIXED,
90	/** Executable module, relocatable, non-fixed load address. */
91	RTLDRTYPE_EXECUTABLE_RELOCATABLE,
92	/** Executable module, position independent code, non-fixed load address. */
93	RTLDRTYPE_EXECUTABLE_PIC,
94	/** Shared library, fixed load address.
95	* Typically a system library. */
96	RTLDRTYPE_SHARED_LIBRARY_FIXED,
97	/** Shared library, relocatable, non-fixed load address. */
98	RTLDRTYPE_SHARED_LIBRARY_RELOCATABLE,
99	/** Shared library, position independent code, non-fixed load address. */
100	RTLDRTYPE_SHARED_LIBRARY_PIC,
101	/** DLL that contains no code or data only imports and exports. (Chiefly OS/2.) */
102	RTLDRTYPE_FORWARDER_DLL,
103	/** Core or dump. */
104	RTLDRTYPE_CORE,
105	/** Debug module (debug info with empty code & data segments). */
106	RTLDRTYPE_DEBUG_INFO,
107	/** The end of the valid types values (exclusive). */
108	RTLDRTYPE_END,
109	/** Hack to blow the type up to 32-bit. */
110	RTLDRTYPE_32BIT_HACK = 0x7fffffff
111	} RTLDRTYPE;
112
113
114	/**
115	* Loader endian indicator.
116	*/
117	typedef enum RTLDRENDIAN
118	{
119	/** The usual invalid endian. */
120	RTLDRENDIAN_INVALID,
121	/** Little endian. */
122	RTLDRENDIAN_LITTLE,
123	/** Bit endian. */
124	RTLDRENDIAN_BIG,
125	/** Endianness doesn't have a meaning in the context. */
126	RTLDRENDIAN_NA,
127	/** The end of the valid endian values (exclusive). */
128	RTLDRENDIAN_END,
129	/** Hack to blow the type up to 32-bit. */
130	RTLDRENDIAN_32BIT_HACK = 0x7fffffff
131	} RTLDRENDIAN;
132
133
134	/** Pointer to a loader reader instance. */
135	typedef struct RTLDRREADER *PRTLDRREADER;
136	/**
137	* Loader image reader instance.
138	*
139	* @remarks The reader will typically have a larger structure wrapping this one
140	* for storing necessary instance variables.
141	*
142	* The loader ASSUMES the caller serializes all access to the
143	* individual loader module handlers, thus no serialization is required
144	* when implementing this interface.
145	*/
146	typedef struct RTLDRREADER
147	{
148	/** Magic value (RTLDRREADER_MAGIC). */
149	uintptr_t uMagic;
150
151	/**
152	* Reads bytes at a give place in the raw image.
153	*
154	* @returns iprt status code.
155	* @param pReader Pointer to the reader instance.
156	* @param pvBuf Where to store the bits.
157	* @param cb Number of bytes to read.
158	* @param off Where to start reading relative to the start of the raw image.
159	*/
160	DECLCALLBACKMEMBER(int, pfnRead)(PRTLDRREADER pReader, void *pvBuf, size_t cb, RTFOFF off);
161
162	/**
163	* Tells end position of last read.
164	*
165	* @returns position relative to start of the raw image.
166	* @param pReader Pointer to the reader instance.
167	*/
168	DECLCALLBACKMEMBER(RTFOFF, pfnTell)(PRTLDRREADER pReader);
169
170	/**
171	* Gets the size of the raw image bits.
172	*
173	* @returns size of raw image bits in bytes.
174	* @param pReader Pointer to the reader instance.
175	*/
176	DECLCALLBACKMEMBER(RTFOFF, pfnSize)(PRTLDRREADER pReader);
177
178	/**
179	* Map the bits into memory.
180	*
181	* The mapping will be freed upon calling pfnDestroy() if not pfnUnmap()
182	* is called before that. The mapping is read only.
183	*
184	* @returns iprt status code.
185	* @param pReader Pointer to the reader instance.
186	* @param ppvBits Where to store the address of the memory mapping on success.
187	* The size of the mapping can be obtained by calling pfnSize().
188	*/
189	DECLCALLBACKMEMBER(int, pfnMap)(PRTLDRREADER pReader, const void **ppvBits);
190
191	/**
192	* Unmap bits.
193	*
194	* @returns iprt status code.
195	* @param pReader Pointer to the reader instance.
196	* @param pvBits Memory pointer returned by pfnMap().
197	*/
198	DECLCALLBACKMEMBER(int, pfnUnmap)(PRTLDRREADER pReader, const void *pvBits);
199
200	/**
201	* Gets the most appropriate log name.
202	*
203	* @returns Pointer to readonly log name.
204	* @param pReader Pointer to the reader instance.
205	*/
206	DECLCALLBACKMEMBER(const char *, pfnLogName)(PRTLDRREADER pReader);
207
208	/**
209	* Releases all resources associated with the reader instance.
210	* The instance is invalid after this call returns.
211	*
212	* @returns iprt status code.
213	* @param pReader Pointer to the reader instance.
214	*/
215	DECLCALLBACKMEMBER(int, pfnDestroy)(PRTLDRREADER pReader);
216	} RTLDRREADER;
217
218	/** Magic value for RTLDRREADER (Gordon Matthew Thomas Sumner / Sting). */
219	#define RTLDRREADER_MAGIC UINT32_C(0x19511002)
220
221
222	/**
223	* Gets the default file suffix for DLL/SO/DYLIB/whatever.
224	*
225	* @returns The stuff (readonly).
226	*/
227	RTDECL(const char *) RTLdrGetSuff(void);
228
229	/**
230	* Checks if a library is loadable or not.
231	*
232	* This may attempt load and unload the library.
233	*
234	* @returns true/false accordingly.
235	* @param pszFilename Image filename.
236	*/
237	RTDECL(bool) RTLdrIsLoadable(const char *pszFilename);
238
239	/**
240	* Loads a dynamic load library (/shared object) image file using native
241	* OS facilities.
242	*
243	* The filename will be appended the default DLL/SO extension of
244	* the platform if it have been omitted. This means that it's not
245	* possible to load DLLs/SOs with no extension using this interface,
246	* but that's not a bad tradeoff.
247	*
248	* If no path is specified in the filename, the OS will usually search it's library
249	* path to find the image file.
250	*
251	* @returns iprt status code.
252	* @param pszFilename Image filename.
253	* @param phLdrMod Where to store the handle to the loader module.
254	*/
255	RTDECL(int) RTLdrLoad(const char *pszFilename, PRTLDRMOD phLdrMod);
256
257	/**
258	* Loads a dynamic load library (/shared object) image file using native
259	* OS facilities.
260	*
261	* The filename will be appended the default DLL/SO extension of
262	* the platform if it have been omitted. This means that it's not
263	* possible to load DLLs/SOs with no extension using this interface,
264	* but that's not a bad tradeoff.
265	*
266	* If no path is specified in the filename, the OS will usually search it's library
267	* path to find the image file.
268	*
269	* @returns iprt status code.
270	* @param pszFilename Image filename.
271	* @param phLdrMod Where to store the handle to the loader module.
272	* @param fFlags See RTLDRLOAD_FLAGS_XXX.
273	* @param pErrInfo Where to return extended error information. Optional.
274	*/
275	RTDECL(int) RTLdrLoadEx(const char *pszFilename, PRTLDRMOD phLdrMod, uint32_t fFlags, PRTERRINFO pErrInfo);
276
277	/** @defgroup RTLDRLOAD_FLAGS_XXX RTLdrLoadEx flags.
278	* @{ */
279	/** Symbols defined in this library are not made available to resolve
280	* references in subsequently loaded libraries (default). */
281	#define RTLDRLOAD_FLAGS_LOCAL UINT32_C(0)
282	/** Symbols defined in this library will be made available for symbol
283	* resolution of subsequently loaded libraries. */
284	#define RTLDRLOAD_FLAGS_GLOBAL RT_BIT_32(0)
285	/** Do not unload the library upon RTLdrClose. (For system libs.) */
286	#define RTLDRLOAD_FLAGS_NO_UNLOAD RT_BIT_32(1)
287	/** The mask of valid flag bits. */
288	#define RTLDRLOAD_FLAGS_VALID_MASK UINT32_C(0x00000003)
289	/** @} */
290
291	/**
292	* Loads a dynamic load library (/shared object) image file residing in one of
293	* the default system library locations.
294	*
295	* Only the system library locations are searched. No suffix is required.
296	*
297	* @returns iprt status code.
298	* @param pszFilename Image filename. No path.
299	* @param fNoUnload Do not unload the library when RTLdrClose is called.
300	* @param phLdrMod Where to store the handle to the loaded module.
301	*/
302	RTDECL(int) RTLdrLoadSystem(const char *pszFilename, bool fNoUnload, PRTLDRMOD phLdrMod);
303
304	/**
305	* Combines RTLdrLoadSystem and RTLdrGetSymbol, with fNoUnload set to true.
306	*
307	* @returns The symbol value, NULL on failure. (If you care for a less boolean
308	* status, go thru the necessary API calls yourself.)
309	* @param pszFilename Image filename. No path.
310	* @param pszSymbol Symbol name.
311	*/
312	RTDECL(void ) RTLdrGetSystemSymbol(const char pszFilename, const char *pszSymbol);
313
314	/**
315	* Loads a dynamic load library (/shared object) image file residing in the
316	* RTPathAppPrivateArch() directory.
317	*
318	* Suffix is not required.
319	*
320	* @returns iprt status code.
321	* @param pszFilename Image filename. No path.
322	* @param phLdrMod Where to store the handle to the loaded module.
323	*/
324	RTDECL(int) RTLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod);
325
326	/**
327	* Gets the native module handle for a module loaded by RTLdrLoad, RTLdrLoadEx,
328	* RTLdrLoadSystem, or RTLdrLoadAppPriv.
329	*
330	* @returns Native handle on success, ~(uintptr_t)0 on failure.
331	* @param hLdrMod The loader module handle.
332	*/
333	RTDECL(uintptr_t) RTLdrGetNativeHandle(RTLDRMOD hLdrMod);
334
335
336	/**
337	* Image architecuture specifier for RTLdrOpenEx.
338	*/
339	typedef enum RTLDRARCH
340	{
341	RTLDRARCH_INVALID = 0,
342	/** Whatever. */
343	RTLDRARCH_WHATEVER,
344	/** The host architecture. */
345	RTLDRARCH_HOST,
346	/** 32-bit x86. */
347	RTLDRARCH_X86_32,
348	/** AMD64 (64-bit x86 if you like). */
349	RTLDRARCH_AMD64,
350	/** End of the valid values. */
351	RTLDRARCH_END,
352	/** Make sure the type is a full 32-bit. */
353	RTLDRARCH_32BIT_HACK = 0x7fffffff
354	} RTLDRARCH;
355	/** Pointer to a RTLDRARCH. */
356	typedef RTLDRARCH *PRTLDRARCH;
357
358	/** @name RTLDR_O_XXX - RTLdrOpen flags.
359	* @{ */
360	/** Open for debugging or introspection reasons.
361	* This will skip a few of the stricter validations when loading images. */
362	#define RTLDR_O_FOR_DEBUG RT_BIT_32(0)
363	/** Open for signature validation. */
364	#define RTLDR_O_FOR_VALIDATION RT_BIT_32(1)
365	/** Mask of valid flags. */
366	#define RTLDR_O_VALID_MASK UINT32_C(0x00000003)
367	/** @} */
368
369	/**
370	* Open a binary image file, extended version.
371	*
372	* @returns iprt status code.
373	* @param pszFilename Image filename.
374	* @param fFlags Valid RTLDR_O_XXX combination.
375	* @param enmArch CPU architecture specifier for the image to be loaded.
376	* @param phLdrMod Where to store the handle to the loader module.
377	*/
378	RTDECL(int) RTLdrOpen(const char *pszFilename, uint32_t fFlags, RTLDRARCH enmArch, PRTLDRMOD phLdrMod);
379
380	/**
381	* Opens a binary image file using kLdr.
382	*
383	* @returns iprt status code.
384	* @param pszFilename Image filename.
385	* @param phLdrMod Where to store the handle to the loaded module.
386	* @param fFlags Valid RTLDR_O_XXX combination.
387	* @param enmArch CPU architecture specifier for the image to be loaded.
388	* @remark Primarily for testing the loader.
389	*/
390	RTDECL(int) RTLdrOpenkLdr(const char *pszFilename, uint32_t fFlags, RTLDRARCH enmArch, PRTLDRMOD phLdrMod);
391
392	/**
393	* Open part with reader.
394	*
395	* @returns iprt status code.
396	* @param pReader The loader reader instance which will provide the raw
397	* image bits. The reader instance will be consumed on
398	* success. On failure, the caller has to do the cleaning
399	* up.
400	* @param fFlags Valid RTLDR_O_XXX combination.
401	* @param enmArch Architecture specifier.
402	* @param phMod Where to store the handle.
403	* @param pErrInfo Where to return extended error information. Optional.
404	*/
405	RTDECL(int) RTLdrOpenWithReader(PRTLDRREADER pReader, uint32_t fFlags, RTLDRARCH enmArch, PRTLDRMOD phMod, PRTERRINFO pErrInfo);
406
407	/**
408	* Called to read @a cb bytes at @a off into @a pvBuf.
409	*
410	* @returns IPRT status code
411	* @param pvBuf The output buffer.
412	* @param cb The number of bytes to read.
413	* @param off Where to start reading.
414	* @param pvUser The user parameter.
415	*/
416	typedef DECLCALLBACK(int) FNRTLDRRDRMEMREAD(void pvBuf, size_t cb, size_t off, void pvUser);
417	/** Pointer to a RTLdrOpenInMemory reader callback. */
418	typedef FNRTLDRRDRMEMREAD *PFNRTLDRRDRMEMREAD;
419
420	/**
421	* Called to when the module is unloaded (or done loading) to release resources
422	* associated with it (@a pvUser).
423	*
424	* @returns IPRT status code
425	* @param pvUser The user parameter.
426	*/
427	typedef DECLCALLBACK(void) FNRTLDRRDRMEMDTOR(void *pvUser);
428	/** Pointer to a RTLdrOpenInMemory destructor callback. */
429	typedef FNRTLDRRDRMEMDTOR *PFNRTLDRRDRMEMDTOR;
430
431	/**
432	* Open a in-memory image or an image with a custom reader callback.
433	*
434	* @returns IPRT status code.
435	* @param pszName The image name.
436	* @param fFlags Valid RTLDR_O_XXX combination.
437	* @param enmArch CPU architecture specifier for the image to be loaded.
438	* @param cbImage The size of the image (fake file).
439	* @param pfnRead The read function. If NULL is passed in, a default
440	* reader function is provided that assumes @a pvUser
441	* points to the raw image bits, at least @a cbImage of
442	* valid memory.
443	* @param pfnDtor The destructor function. If NULL is passed, a default
444	* destructor will be provided that passes @a pvUser to
445	* RTMemFree.
446	* @param pvUser The user argument or, if any of the callbacks are NULL,
447	* a pointer to a memory block.
448	* @param phLdrMod Where to return the module handle.
449	*
450	* @remarks With the exception of invalid @a pfnDtor and/or @a pvUser
451	* parameters, the pfnDtor methods (or the default one if NULL) will
452	* always be invoked. The destruction of pvUser is entirely in the
453	* hands of this method once it's called.
454	*/
455	RTDECL(int) RTLdrOpenInMemory(const char *pszName, uint32_t fFlags, RTLDRARCH enmArch, size_t cbImage,
456	PFNRTLDRRDRMEMREAD pfnRead, PFNRTLDRRDRMEMDTOR pfnDtor, void *pvUser,
457	PRTLDRMOD phLdrMod);
458
459	/**
460	* Closes a loader module handle.
461	*
462	* The handle can be obtained using any of the RTLdrLoad(), RTLdrOpen()
463	* and RTLdrOpenInMemory() functions.
464	*
465	* @returns iprt status code.
466	* @param hLdrMod The loader module handle.
467	*/
468	RTDECL(int) RTLdrClose(RTLDRMOD hLdrMod);
469
470	/**
471	* Gets the address of a named exported symbol.
472	*
473	* @returns iprt status code.
474	* @retval VERR_LDR_FORWARDER forwarder, use pfnQueryForwarderInfo. Buffer size
475	* hint in @a ppvValue.
476	* @param hLdrMod The loader module handle.
477	* @param pszSymbol Symbol name.
478	* @param ppvValue Where to store the symbol value. Note that this is restricted to the
479	* pointer size used on the host!
480	*/
481	RTDECL(int) RTLdrGetSymbol(RTLDRMOD hLdrMod, const char pszSymbol, void *ppvValue);
482
483	/**
484	* Gets the address of a named exported symbol.
485	*
486	* This function differs from the plain one in that it can deal with
487	* both GC and HC address sizes, and that it can calculate the symbol
488	* value relative to any given base address.
489	*
490	* @returns iprt status code.
491	* @retval VERR_LDR_FORWARDER forwarder, use pfnQueryForwarderInfo. Buffer size
492	* hint in @a pValue.
493	* @param hLdrMod The loader module handle.
494	* @param pvBits Optional pointer to the loaded image.
495	* Set this to NULL if no RTLdrGetBits() processed image bits are available.
496	* Not supported for RTLdrLoad() images.
497	* @param BaseAddress Image load address.
498	* Not supported for RTLdrLoad() images.
499	* @param iOrdinal Symbol ordinal number, pass UINT32_MAX if pszSymbol
500	* should be used instead.
501	* @param pszSymbol Symbol name.
502	* @param pValue Where to store the symbol value.
503	*/
504	RTDECL(int) RTLdrGetSymbolEx(RTLDRMOD hLdrMod, const void *pvBits, RTLDRADDR BaseAddress,
505	uint32_t iOrdinal, const char *pszSymbol, PRTLDRADDR pValue);
506
507	/**
508	* Gets the address of a named exported function.
509	*
510	* Same as RTLdrGetSymbol, but skips the status code and pointer to return
511	* variable stuff.
512	*
513	* @returns Pointer to the function if found, NULL if not.
514	* @param hLdrMod The loader module handle.
515	* @param pszSymbol Function name.
516	*/
517	RTDECL(PFNRT) RTLdrGetFunction(RTLDRMOD hLdrMod, const char *pszSymbol);
518
519	/**
520	* Information about an imported symbol.
521	*/
522	typedef struct RTLDRIMPORTINFO
523	{
524	/** Symbol table entry number, UINT32_MAX if not available. */
525	uint32_t iSelfOrdinal;
526	/** The ordinal of the imported symbol in szModule, UINT32_MAX if not used. */
527	uint32_t iOrdinal;
528	/** The symbol name, NULL if not used. This points to the char immediately
529	* following szModule when returned by RTLdrQueryForwarderInfo. */
530	const char *pszSymbol;
531	/** The name of the module being imported from. */
532	char szModule[1];
533	} RTLDRIMPORTINFO;
534	/** Pointer to information about an imported symbol. */
535	typedef RTLDRIMPORTINFO *PRTLDRIMPORTINFO;
536	/** Pointer to const information about an imported symbol. */
537	typedef RTLDRIMPORTINFO const *PCRTLDRIMPORTINFO;
538
539	/**
540	* Query information about a forwarded symbol.
541	*
542	* @returns IPRT status code.
543	* @param hLdrMod The loader module handle.
544	* @param pvBits Optional pointer to the loaded image.
545	* Set this to NULL if no RTLdrGetBits() processed image bits are available.
546	* Not supported for RTLdrLoad() images.
547	* @param iOrdinal Symbol ordinal number, pass UINT32_MAX if pszSymbol
548	* should be used instead.
549	* @param pszSymbol Symbol name.
550	* @param pInfo Where to return the forwarder info.
551	* @param cbInfo Size of the buffer @a pInfo points to. For a size
552	* hint, see @a pValue when RTLdrGetSymbolEx returns
553	* VERR_LDR_FORWARDER.
554	*/
555	RTDECL(int) RTLdrQueryForwarderInfo(RTLDRMOD hLdrMod, const void pvBits, uint32_t iOrdinal, const char pszSymbol,
556	PRTLDRIMPORTINFO pInfo, size_t cbInfo);
557
558
559	/**
560	* Gets the size of the loaded image.
561	*
562	* This is not necessarily available for images that has been loaded using
563	* RTLdrLoad().
564	*
565	* @returns image size (in bytes).
566	* @returns ~(size_t)0 on if not available.
567	* @param hLdrMod Handle to the loader module.
568	*/
569	RTDECL(size_t) RTLdrSize(RTLDRMOD hLdrMod);
570
571	/**
572	* Resolve an external symbol during RTLdrGetBits().
573	*
574	* @returns iprt status code.
575	* @param hLdrMod The loader module handle.
576	* @param pszModule Module name.
577	* @param pszSymbol Symbol name, NULL if uSymbol should be used.
578	* @param uSymbol Symbol ordinal, ~0 if pszSymbol should be used.
579	* @param pValue Where to store the symbol value (address).
580	* @param pvUser User argument.
581	*/
582	typedef DECLCALLBACK(int) RTLDRIMPORT(RTLDRMOD hLdrMod, const char pszModule, const char pszSymbol, unsigned uSymbol,
583	PRTLDRADDR pValue, void *pvUser);
584	/** Pointer to a FNRTLDRIMPORT() callback function. */
585	typedef RTLDRIMPORT *PFNRTLDRIMPORT;
586
587	/**
588	* Loads the image into a buffer provided by the user and applies fixups
589	* for the given base address.
590	*
591	* @returns iprt status code.
592	* @param hLdrMod The load module handle.
593	* @param pvBits Where to put the bits.
594	* Must be as large as RTLdrSize() suggests.
595	* @param BaseAddress The base address.
596	* @param pfnGetImport Callback function for resolving imports one by one.
597	* @param pvUser User argument for the callback.
598	* @remark Not supported for RTLdrLoad() images.
599	*/
600	RTDECL(int) RTLdrGetBits(RTLDRMOD hLdrMod, void pvBits, RTLDRADDR BaseAddress, PFNRTLDRIMPORT pfnGetImport, void pvUser);
601
602	/**
603	* Relocates bits after getting them.
604	* Useful for code which moves around a bit.
605	*
606	* @returns iprt status code.
607	* @param hLdrMod The loader module handle.
608	* @param pvBits Where the image bits are.
609	* Must have been passed to RTLdrGetBits().
610	* @param NewBaseAddress The new base address.
611	* @param OldBaseAddress The old base address.
612	* @param pfnGetImport Callback function for resolving imports one by one.
613	* @param pvUser User argument for the callback.
614	* @remark Not supported for RTLdrLoad() images.
615	*/
616	RTDECL(int) RTLdrRelocate(RTLDRMOD hLdrMod, void *pvBits, RTLDRADDR NewBaseAddress, RTLDRADDR OldBaseAddress,
617	PFNRTLDRIMPORT pfnGetImport, void *pvUser);
618
619	/**
620	* Enumeration callback function used by RTLdrEnumSymbols().
621	*
622	* @returns iprt status code. Failure will stop the enumeration.
623	* @param hLdrMod The loader module handle.
624	* @param pszSymbol Symbol name. NULL if ordinal only.
625	* @param uSymbol Symbol ordinal, ~0 if not used.
626	* @param Value Symbol value.
627	* @param pvUser The user argument specified to RTLdrEnumSymbols().
628	*/
629	typedef DECLCALLBACK(int) RTLDRENUMSYMS(RTLDRMOD hLdrMod, const char pszSymbol, unsigned uSymbol, RTLDRADDR Value, void pvUser);
630	/** Pointer to a RTLDRENUMSYMS() callback function. */
631	typedef RTLDRENUMSYMS *PFNRTLDRENUMSYMS;
632
633	/**
634	* Enumerates all symbols in a module.
635	*
636	* @returns iprt status code.
637	* @param hLdrMod The loader module handle.
638	* @param fFlags Flags indicating what to return and such.
639	* @param pvBits Optional pointer to the loaded image. (RTLDR_ENUM_SYMBOL_FLAGS_*)
640	* Set this to NULL if no RTLdrGetBits() processed image bits are available.
641	* @param BaseAddress Image load address.
642	* @param pfnCallback Callback function.
643	* @param pvUser User argument for the callback.
644	* @remark Not supported for RTLdrLoad() images.
645	*/
646	RTDECL(int) RTLdrEnumSymbols(RTLDRMOD hLdrMod, unsigned fFlags, const void pvBits, RTLDRADDR BaseAddress, PFNRTLDRENUMSYMS pfnCallback, void pvUser);
647
648	/** @name RTLdrEnumSymbols flags.
649	* @{ */
650	/** Returns ALL kinds of symbols. The default is to only return public/exported symbols. */
651	#define RTLDR_ENUM_SYMBOL_FLAGS_ALL RT_BIT(1)
652	/** Ignore forwarders (for use with RTLDR_ENUM_SYMBOL_FLAGS_ALL). */
653	#define RTLDR_ENUM_SYMBOL_FLAGS_NO_FWD RT_BIT(2)
654	/** @} */
655
656
657	/**
658	* Debug info type (as far the loader can tell).
659	*/
660	typedef enum RTLDRDBGINFOTYPE
661	{
662	/** The invalid 0 value. */
663	RTLDRDBGINFOTYPE_INVALID = 0,
664	/** Unknown debug info format. */
665	RTLDRDBGINFOTYPE_UNKNOWN,
666	/** Stabs. */
667	RTLDRDBGINFOTYPE_STABS,
668	/** Debug With Arbitrary Record Format (DWARF). */
669	RTLDRDBGINFOTYPE_DWARF,
670	/** Debug With Arbitrary Record Format (DWARF), in external file (DWO). */
671	RTLDRDBGINFOTYPE_DWARF_DWO,
672	/** Microsoft Codeview debug info. */
673	RTLDRDBGINFOTYPE_CODEVIEW,
674	/** Microsoft Codeview debug info, in external v2.0+ program database (PDB). */
675	RTLDRDBGINFOTYPE_CODEVIEW_PDB20,
676	/** Microsoft Codeview debug info, in external v7.0+ program database (PDB). */
677	RTLDRDBGINFOTYPE_CODEVIEW_PDB70,
678	/** Microsoft Codeview debug info, in external file (DBG). */
679	RTLDRDBGINFOTYPE_CODEVIEW_DBG,
680	/** Microsoft COFF debug info. */
681	RTLDRDBGINFOTYPE_COFF,
682	/** Watcom debug info. */
683	RTLDRDBGINFOTYPE_WATCOM,
684	/** IBM High Level Language debug info.. */
685	RTLDRDBGINFOTYPE_HLL,
686	/** The end of the valid debug info values (exclusive). */
687	RTLDRDBGINFOTYPE_END,
688	/** Blow the type up to 32-bits. */
689	RTLDRDBGINFOTYPE_32BIT_HACK = 0x7fffffff
690	} RTLDRDBGINFOTYPE;
691
692
693	/**
694	* Debug info details for the enumeration callback.
695	*/
696	typedef struct RTLDRDBGINFO
697	{
698	/** The kind of debug info. */
699	RTLDRDBGINFOTYPE enmType;
700	/** The debug info ordinal number / id. */
701	uint32_t iDbgInfo;
702	/** The file offset if this type has one specific location in the executable
703	* image file. This is -1 if there isn't any specific file location. */
704	RTFOFF offFile;
705	/** The link address of the debug info if it's loadable. NIL_RTLDRADDR if not
706	* loadable*/
707	RTLDRADDR LinkAddress;
708	/** The size of the debug information. -1 is used if this isn't applicable.*/
709	RTLDRADDR cb;
710	/** This is set if the debug information is found in an external file. NULL
711	* if no external file involved.
712	* @note Putting it outside the union to allow lazy callback implementation. */
713	const char *pszExtFile;
714	/** Type (enmType) specific information. */
715	union
716	{
717	/** RTLDRDBGINFOTYPE_DWARF */
718	struct
719	{
720	/** The section name. */
721	const char *pszSection;
722	} Dwarf;
723
724	/** RTLDRDBGINFOTYPE_DWARF_DWO */
725	struct
726	{
727	/** The CRC32 of the external file. */
728	uint32_t uCrc32;
729	} Dwo;
730
731	/** RTLDRDBGINFOTYPE_CODEVIEW, RTLDRDBGINFOTYPE_COFF */
732	struct
733	{
734	/** The PE image size. */
735	uint32_t cbImage;
736	/** The timestamp. */
737	uint32_t uTimestamp;
738	/** The major version from the entry. */
739	uint32_t uMajorVer;
740	/** The minor version from the entry. */
741	uint32_t uMinorVer;
742	} Cv, Coff;
743
744	/** RTLDRDBGINFOTYPE_CODEVIEW_DBG */
745	struct
746	{
747	/** The PE image size. */
748	uint32_t cbImage;
749	/** The timestamp. */
750	uint32_t uTimestamp;
751	} Dbg;
752
753	/** RTLDRDBGINFOTYPE_CODEVIEW_PDB20*/
754	struct
755	{
756	/** The PE image size. */
757	uint32_t cbImage;
758	/** The timestamp. */
759	uint32_t uTimestamp;
760	/** The PDB age. */
761	uint32_t uAge;
762	} Pdb20;
763
764	/** RTLDRDBGINFOTYPE_CODEVIEW_PDB70 */
765	struct
766	{
767	/** The PE image size. */
768	uint32_t cbImage;
769	/** The PDB age. */
770	uint32_t uAge;
771	/** The UUID. */
772	RTUUID Uuid;
773	} Pdb70;
774	} u;
775	} RTLDRDBGINFO;
776	/** Pointer to debug info details. */
777	typedef RTLDRDBGINFO *PRTLDRDBGINFO;
778	/** Pointer to read only debug info details. */
779	typedef RTLDRDBGINFO const *PCRTLDRDBGINFO;
780
781
782	/**
783	* Debug info enumerator callback.
784	*
785	* @returns VINF_SUCCESS to continue the enumeration. Any other status code
786	* will cause RTLdrEnumDbgInfo to immediately return with that status.
787	*
788	* @param hLdrMod The module handle.
789	* @param pDbgInfo Pointer to a read only structure with the details.
790	* @param pvUser The user parameter specified to RTLdrEnumDbgInfo.
791	*/
792	typedef DECLCALLBACK(int) FNRTLDRENUMDBG(RTLDRMOD hLdrMod, PCRTLDRDBGINFO pDbgInfo, void *pvUser);
793	/** Pointer to a debug info enumerator callback. */
794	typedef FNRTLDRENUMDBG *PFNRTLDRENUMDBG;
795
796	/**
797	* Enumerate the debug info contained in the executable image.
798	*
799	* @returns IPRT status code or whatever pfnCallback returns.
800	*
801	* @param hLdrMod The module handle.
802	* @param pvBits Optional pointer to bits returned by
803	* RTLdrGetBits(). This can be used by some module
804	* interpreters to reduce memory consumption.
805	* @param pfnCallback The callback function.
806	* @param pvUser The user argument.
807	*/
808	RTDECL(int) RTLdrEnumDbgInfo(RTLDRMOD hLdrMod, const void pvBits, PFNRTLDRENUMDBG pfnCallback, void pvUser);
809
810
811	/**
812	* Loader segment.
813	*/
814	typedef struct RTLDRSEG
815	{
816	/** The segment name. Always set to something. */
817	const char *pszName;
818	/** The length of the segment name. */
819	uint32_t cchName;
820	/** The flat selector to use for the segment (i.e. data/code).
821	* Primarily a way for the user to specify selectors for the LX/LE and NE interpreters. */
822	uint16_t SelFlat;
823	/** The 16-bit selector to use for the segment.
824	* Primarily a way for the user to specify selectors for the LX/LE and NE interpreters. */
825	uint16_t Sel16bit;
826	/** Segment flags. */
827	uint32_t fFlags;
828	/** The segment protection (RTMEM_PROT_XXX). */
829	uint32_t fProt;
830	/** The size of the segment. */
831	RTLDRADDR cb;
832	/** The required segment alignment.
833	* The to 0 if the segment isn't supposed to be mapped. */
834	RTLDRADDR Alignment;
835	/** The link address.
836	* Set to NIL_RTLDRADDR if the segment isn't supposed to be mapped or if
837	* the image doesn't have link addresses. */
838	RTLDRADDR LinkAddress;
839	/** File offset of the segment.
840	* Set to -1 if no file backing (like BSS). */
841	RTFOFF offFile;
842	/** Size of the file bits of the segment.
843	* Set to -1 if no file backing (like BSS). */
844	RTFOFF cbFile;
845	/** The relative virtual address when mapped.
846	* Set to NIL_RTLDRADDR if the segment isn't supposed to be mapped. */
847	RTLDRADDR RVA;
848	/** The size of the segment including the alignment gap up to the next segment when mapped.
849	* This is set to NIL_RTLDRADDR if not implemented. */
850	RTLDRADDR cbMapped;
851	} RTLDRSEG;
852	/** Pointer to a loader segment. */
853	typedef RTLDRSEG *PRTLDRSEG;
854	/** Pointer to a read only loader segment. */
855	typedef RTLDRSEG const *PCRTLDRSEG;
856
857
858	/** @name Segment flags
859	* @{ */
860	/** The segment is 16-bit. When not set the default of the target architecture is assumed. */
861	#define RTLDRSEG_FLAG_16BIT UINT32_C(1)
862	/** The segment requires a 16-bit selector alias. (OS/2) */
863	#define RTLDRSEG_FLAG_OS2_ALIAS16 UINT32_C(2)
864	/** Conforming segment (x86 weirdness). (OS/2) */
865	#define RTLDRSEG_FLAG_OS2_CONFORM UINT32_C(4)
866	/** IOPL (ring-2) segment. (OS/2) */
867	#define RTLDRSEG_FLAG_OS2_IOPL UINT32_C(8)
868	/** @} */
869
870	/**
871	* Segment enumerator callback.
872	*
873	* @returns VINF_SUCCESS to continue the enumeration. Any other status code
874	* will cause RTLdrEnumSegments to immediately return with that
875	* status.
876	*
877	* @param hLdrMod The module handle.
878	* @param pSeg The segment information.
879	* @param pvUser The user parameter specified to RTLdrEnumSegments.
880	*/
881	typedef DECLCALLBACK(int) FNRTLDRENUMSEGS(RTLDRMOD hLdrMod, PCRTLDRSEG pSeg, void *pvUser);
882	/** Pointer to a segment enumerator callback. */
883	typedef FNRTLDRENUMSEGS *PFNRTLDRENUMSEGS;
884
885	/**
886	* Enumerate the debug info contained in the executable image.
887	*
888	* @returns IPRT status code or whatever pfnCallback returns.
889	*
890	* @param hLdrMod The module handle.
891	* @param pfnCallback The callback function.
892	* @param pvUser The user argument.
893	*/
894	RTDECL(int) RTLdrEnumSegments(RTLDRMOD hLdrMod, PFNRTLDRENUMSEGS pfnCallback, void *pvUser);
895
896	/**
897	* Converts a link address to a segment:offset address.
898	*
899	* @returns IPRT status code.
900	*
901	* @param hLdrMod The module handle.
902	* @param LinkAddress The link address to convert.
903	* @param piSeg Where to return the segment index.
904	* @param poffSeg Where to return the segment offset.
905	*/
906	RTDECL(int) RTLdrLinkAddressToSegOffset(RTLDRMOD hLdrMod, RTLDRADDR LinkAddress, uint32_t *piSeg, PRTLDRADDR poffSeg);
907
908	/**
909	* Converts a link address to an image relative virtual address (RVA).
910	*
911	* @returns IPRT status code.
912	*
913	* @param hLdrMod The module handle.
914	* @param LinkAddress The link address to convert.
915	* @param pRva Where to return the RVA.
916	*/
917	RTDECL(int) RTLdrLinkAddressToRva(RTLDRMOD hLdrMod, RTLDRADDR LinkAddress, PRTLDRADDR pRva);
918
919	/**
920	* Converts an image relative virtual address (RVA) to a segment:offset.
921	*
922	* @returns IPRT status code.
923	*
924	* @param hLdrMod The module handle.
925	* @param Rva The link address to convert.
926	* @param piSeg Where to return the segment index.
927	* @param poffSeg Where to return the segment offset.
928	*/
929	RTDECL(int) RTLdrSegOffsetToRva(RTLDRMOD hLdrMod, uint32_t iSeg, RTLDRADDR offSeg, PRTLDRADDR pRva);
930
931	/**
932	* Converts a segment:offset into an image relative virtual address (RVA).
933	*
934	* @returns IPRT status code.
935	*
936	* @param hLdrMod The module handle.
937	* @param iSeg The segment index.
938	* @param offSeg The segment offset.
939	* @param pRva Where to return the RVA.
940	*/
941	RTDECL(int) RTLdrRvaToSegOffset(RTLDRMOD hLdrMod, RTLDRADDR Rva, uint32_t *piSeg, PRTLDRADDR poffSeg);
942
943	/**
944	* Gets the image format.
945	*
946	* @returns Valid image format on success. RTLDRFMT_INVALID on invalid handle or
947	* other errors.
948	* @param hLdrMod The module handle.
949	*/
950	RTDECL(RTLDRFMT) RTLdrGetFormat(RTLDRMOD hLdrMod);
951
952	/**
953	* Gets the image type.
954	*
955	* @returns Valid image type value on success. RTLDRTYPE_INVALID on
956	* invalid handle or other errors.
957	* @param hLdrMod The module handle.
958	*/
959	RTDECL(RTLDRTYPE) RTLdrGetType(RTLDRMOD hLdrMod);
960
961	/**
962	* Gets the image endian-ness.
963	*
964	* @returns Valid image endian value on success. RTLDRENDIAN_INVALID on invalid
965	* handle or other errors.
966	* @param hLdrMod The module handle.
967	*/
968	RTDECL(RTLDRENDIAN) RTLdrGetEndian(RTLDRMOD hLdrMod);
969
970	/**
971	* Gets the image endian-ness.
972	*
973	* @returns Valid image architecture value on success.
974	* RTLDRARCH_INVALID on invalid handle or other errors.
975	* @param hLdrMod The module handle.
976	*/
977	RTDECL(RTLDRARCH) RTLdrGetArch(RTLDRMOD hLdrMod);
978
979	/**
980	* Loader properties that can be queried thru RTLdrQueryProp.
981	*/
982	typedef enum RTLDRPROP
983	{
984	RTLDRPROP_INVALID = 0,
985	/** The image UUID (Mach-O).
986	* Returns a RTUUID in the buffer. */
987	RTLDRPROP_UUID,
988	/** The image timestamp in seconds, genrally since unix epoc.
989	* Returns a 32-bit or 64-bit signed integer value in the buffer. */
990	RTLDRPROP_TIMESTAMP_SECONDS,
991	/** Checks if the image is signed.
992	* Returns a bool. */
993	RTLDRPROP_IS_SIGNED,
994	/** Retrives the PKCS \#7 SignedData blob that signs the image.
995	* Returns variable sized buffer containing the ASN.1 BER encoding.
996	*
997	* @remarks This generally starts with a PKCS \#7 Content structure, the
998	* SignedData bit is found a few levels down into this as per RFC. */
999	RTLDRPROP_PKCS7_SIGNED_DATA,
1000
1001	/** Query whether code signature checks are enabled. */
1002	RTLDRPROP_SIGNATURE_CHECKS_ENFORCED,
1003
1004	/** Number of import or needed modules. */
1005	RTLDRPROP_IMPORT_COUNT,
1006	/** Import module by index (32-bit) stored in the buffer. */
1007	RTLDRPROP_IMPORT_MODULE,
1008
1009	/** End of valid properties. */
1010	RTLDRPROP_END,
1011	/** Blow the type up to 32 bits. */
1012	RTLDRPROP_32BIT_HACK = 0x7fffffff
1013	} RTLDRPROP;
1014
1015	/**
1016	* Generic method for querying image properties.
1017	*
1018	* @returns IPRT status code.
1019	* @retval VERR_NOT_SUPPORTED if the property query isn't supported (either all
1020	* or that specific property). The caller must handle this result.
1021	* @retval VERR_NOT_FOUND the property was not found in the module. The caller
1022	* must also normally deal with this.
1023	* @retval VERR_INVALID_FUNCTION if the function value is wrong.
1024	* @retval VERR_INVALID_PARAMETER if the buffer size is wrong.
1025	* @retval VERR_BUFFER_OVERFLOW if the function doesn't have a fixed size
1026	* buffer and the buffer isn't big enough. Use RTLdrQueryPropEx.
1027	* @retval VERR_INVALID_HANDLE if the handle is invalid.
1028	*
1029	* @param hLdrMod The module handle.
1030	* @param enmLdrProp The property to query.
1031	* @param pvBuf Pointer to the input / output buffer. In most cases
1032	* it's only used for returning data.
1033	* @param cbBuf The size of the buffer.
1034	*/
1035	RTDECL(int) RTLdrQueryProp(RTLDRMOD hLdrMod, RTLDRPROP enmProp, void *pvBuf, size_t cbBuf);
1036
1037	/**
1038	* Generic method for querying image properties, extended version.
1039	*
1040	* @returns IPRT status code.
1041	* @retval VERR_NOT_SUPPORTED if the property query isn't supported (either all
1042	* or that specific property). The caller must handle this result.
1043	* @retval VERR_NOT_FOUND the property was not found in the module. The caller
1044	* must also normally deal with this.
1045	* @retval VERR_INVALID_FUNCTION if the function value is wrong.
1046	* @retval VERR_INVALID_PARAMETER if the fixed buffer size is wrong. Correct
1047	* size in @a *pcbRet.
1048	* @retval VERR_BUFFER_OVERFLOW if the function doesn't have a fixed size
1049	* buffer and the buffer isn't big enough. Correct size in @a *pcbRet.
1050	* @retval VERR_INVALID_HANDLE if the handle is invalid.
1051	*
1052	* @param hLdrMod The module handle.
1053	* @param enmLdrProp The property to query.
1054	* @param pvBits Optional pointer to bits returned by
1055	* RTLdrGetBits(). This can be utilized by some module
1056	* interpreters to reduce memory consumption and file
1057	* access.
1058	* @param pvBuf Pointer to the input / output buffer. In most cases
1059	* it's only used for returning data.
1060	* @param cbBuf The size of the buffer.
1061	* @param pcbRet Where to return the amount of data returned. On
1062	* buffer size errors, this is set to the correct size.
1063	* Optional.
1064	*/
1065	RTDECL(int) RTLdrQueryPropEx(RTLDRMOD hLdrMod, RTLDRPROP enmProp, void pvBits, void pvBuf, size_t cbBuf, size_t *pcbBuf);
1066
1067
1068	/**
1069	* Signature type, see FNRTLDRVALIDATESIGNEDDATA.
1070	*/
1071	typedef enum RTLDRSIGNATURETYPE
1072	{
1073	/** Invalid value. */
1074	RTLDRSIGNATURETYPE_INVALID = 0,
1075	/** A RTPKCS7CONTENTINFO structure w/ RTPKCS7SIGNEDDATA inside.
1076	* It's parsed, so the whole binary ASN.1 representation can be found by
1077	* using RTASN1CORE_GET_RAW_ASN1_PTR() and RTASN1CORE_GET_RAW_ASN1_SIZE(). */
1078	RTLDRSIGNATURETYPE_PKCS7_SIGNED_DATA,
1079	/** End of valid values. */
1080	RTLDRSIGNATURETYPE_END,
1081	/** Make sure the size is 32-bit. */
1082	RTLDRSIGNATURETYPE_32BIT_HACK = 0x7fffffff
1083	} RTLDRSIGNATURETYPE;
1084
1085	/**
1086	* Callback used by RTLdrVerifySignature to verify the signature and associated
1087	* certificates.
1088	*
1089	* @returns IPRT status code.
1090	* @param hLdrMod The module handle.
1091	* @param enmSignature The signature format.
1092	* @param pvSignature The signature data. Format given by @a enmSignature.
1093	* @param cbSignature The size of the buffer @a pvSignature points to.
1094	* @param pErrInfo Pointer to an error info buffer, optional.
1095	* @param pvUser User argument.
1096	*
1097	*/
1098	typedef DECLCALLBACK(int) FNRTLDRVALIDATESIGNEDDATA(RTLDRMOD hLdrMod, RTLDRSIGNATURETYPE enmSignature, void const *pvSignature, size_t cbSignature,
1099	PRTERRINFO pErrInfo, void *pvUser);
1100	/** Pointer to a signature verification callback. */
1101	typedef FNRTLDRVALIDATESIGNEDDATA *PFNRTLDRVALIDATESIGNEDDATA;
1102
1103	/**
1104	* Verify the image signature.
1105	*
1106	* This may permform additional integrity checks on the image structures that
1107	* was not done when opening the image.
1108	*
1109	* @returns IPRT status code.
1110	* @retval VERR_LDRVI_NOT_SIGNED if not signed.
1111	*
1112	* @param hLdrMod The module handle.
1113	* @param pfnCallback Callback that does the signature and certificate
1114	* verficiation.
1115	* @param pvUser User argument for the callback.
1116	* @param pErrInfo Pointer to an error info buffer. Optional.
1117	*/
1118	RTDECL(int) RTLdrVerifySignature(RTLDRMOD hLdrMod, PFNRTLDRVALIDATESIGNEDDATA pfnCallback, void *pvUser, PRTERRINFO pErrInfo);
1119
1120	/**
1121	* Calculate the image hash according the image signing rules.
1122	*
1123	* @returns IPRT status code.
1124	* @param hLdrMod The module handle.
1125	* @param enmDigest Which kind of digest.
1126	* @param pszDigest Where to store the image digest.
1127	* @param cbDigest Size of the buffer @a pszDigest points at.
1128	*/
1129	RTDECL(int) RTLdrHashImage(RTLDRMOD hLdrMod, RTDIGESTTYPE enmDigest, char *pszDigest, size_t cbDigest);
1130
1131	RT_C_DECLS_END
1132
1133	/** @} */
1134
1135	#endif
1136

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