isovfs.cpp@ 69059

Last change on this file since 69059 was 69059, checked in by vboxsync, 8 years ago
UDF: Some more structures.
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1	/* $Id: isovfs.cpp 69059 2017-10-12 12:31:42Z vboxsync $ */
2	/** @file
3	* IPRT - ISO 9660 and UDF Virtual Filesystem (read only).
4	*/
5
6	/*
7	* Copyright (C) 2017 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#define LOG_GROUP RTLOGGROUP_FS
32	#include "internal/iprt.h"
33	#include <iprt/fsvfs.h>
34
35	#include <iprt/asm.h>
36	#include <iprt/assert.h>
37	#include <iprt/err.h>
38	#include <iprt/crc.h>
39	#include <iprt/ctype.h>
40	#include <iprt/file.h>
41	#include <iprt/log.h>
42	#include <iprt/mem.h>
43	#include <iprt/poll.h>
44	#include <iprt/string.h>
45	#include <iprt/thread.h>
46	#include <iprt/vfs.h>
47	#include <iprt/vfslowlevel.h>
48	#include <iprt/uni.h>
49	#include <iprt/formats/iso9660.h>
50	#include <iprt/formats/udf.h>
51
52
53	/*********************************************************************************************************************************
54	* Defined Constants And Macros *
55	*********************************************************************************************************************************/
56	/** The maximum logical block size. */
57	#define RTFSISO_MAX_LOGICAL_BLOCK_SIZE _16K
58	/** Max directory size. */
59	#if ARCH_BITS == 32
60	# define RTFSISO_MAX_DIR_SIZE _32M
61	#else
62	# define RTFSISO_MAX_DIR_SIZE _64M
63	#endif
64
65	/** Check if an entity ID field equals the given ID string. */
66	#define UDF_ENTITY_ID_EQUALS(a_pEntityId, a_szId) \
67	( memcmp(&(a_pEntityId)->achIdentifier[0], a_szId, RT_MIN(sizeof(a_szId), sizeof(a_pEntityId)->achIdentifier)) == 0 )
68	/** Checks if a character set indicator indicates OSTA compressed unicode. */
69	#define UDF_IS_CHAR_SET_OSTA(a_pCharSet) \
70	( (a_pCharSet)->uType == UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE \
71	&& memcmp((a_pCharSet)->abInfo, UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO, \
72	sizeof(UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO)) == 0 )
73
74
75	/** @name UDF structure logging macros
76	* @{ */
77	#define UDF_LOG2_MEMBER(a_pStruct, a_szFmt, a_Member) \
78	Log2(("ISO/UDF: %-32s %" a_szFmt "\n", #a_Member ":", (a_pStruct)->a_Member))
79	#define UDF_LOG2_MEMBER_EX(a_pStruct, a_szFmt, a_Member, a_cchIndent) \
80	Log2(("ISO/UDF: %*s%-32s %" a_szFmt "\n", a_cchIndent, "", #a_Member ":", (a_pStruct)->a_Member))
81	#define UDF_LOG2_MEMBER_ENTITY_ID_EX(a_pStruct, a_Member, a_cchIndent) \
82	Log2(("ISO/UDF: %*s%-32s '%.23s' fFlags=%#06x Suffix=%.8Rhxs\n", a_cchIndent, "", #a_Member ":", \
83	(a_pStruct)->a_Member.achIdentifier, (a_pStruct)->a_Member.fFlags, &(a_pStruct)->a_Member.Suffix))
84	#define UDF_LOG2_MEMBER_ENTITY_ID(a_pStruct, a_Member) UDF_LOG2_MEMBER_ENTITY_ID_EX(a_pStruct, a_Member, 0)
85	#define UDF_LOG2_MEMBER_EXTENTAD(a_pStruct, a_Member) \
86	Log2(("ISO/UDF: %-32s sector %#010RX32 LB %#010RX32\n", #a_Member ":", (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.cb))
87	#define UDF_LOG2_MEMBER_SHORTAD(a_pStruct, a_Member) \
88	Log2(("ISO/UDF: %-32s sector %#010RX32 LB %#010RX32 %s\n", #a_Member ":", (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.cb, \
89	(a_pStruct)->a_Member.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED ? "alloced+recorded" \
90	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_ONLY_ALLOCATED ? "alloced" \
91	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_FREE ? "free" : "next" ))
92	#define UDF_LOG2_MEMBER_LONGAD(a_pStruct, a_Member) \
93	Log2(("ISO/UDF: %-32s partition %#RX16, block %#010RX32 LB %#010RX32 %s idUnique=%#010RX32 fFlags=%#RX16\n", #a_Member ":", \
94	(a_pStruct)->a_Member.Location.uPartitionNo, (a_pStruct)->a_Member.Location.off, (a_pStruct)->a_Member.cb, \
95	(a_pStruct)->a_Member.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED ? "alloced+recorded" \
96	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_ONLY_ALLOCATED ? "alloced" \
97	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_FREE ? "free" : "next", \
98	(a_pStruct)->a_Member.ImplementationUse.Fid.idUnique, (a_pStruct)->a_Member.ImplementationUse.Fid.fFlags ))
99	#define UDF_LOG2_MEMBER_LBADDR(a_pStruct, a_Member) \
100	Log2(("ISO/UDF: %-32s block %#010RX32 in partition %#06RX16\n", #a_Member ":", \
101	(a_pStruct)->a_Member.off, (a_pStruct)->a_Member.uPartitionNo))
102
103	#define UDF_LOG2_MEMBER_TIMESTAMP(a_pStruct, a_Member) \
104	Log2(("ISO/UDF: %-32s %04d-%02u-%02u %02u:%02u:%02u.%02u%02u%02u offUtc=%d type=%#x\n", #a_Member ":", \
105	(a_pStruct)->a_Member.iYear, (a_pStruct)->a_Member.uMonth, (a_pStruct)->a_Member.uDay, \
106	(a_pStruct)->a_Member.uHour, (a_pStruct)->a_Member.uMinute, (a_pStruct)->a_Member.uSecond, \
107	(a_pStruct)->a_Member.cCentiseconds, (a_pStruct)->a_Member.cHundredsOfMicroseconds, \
108	(a_pStruct)->a_Member.cMicroseconds, (a_pStruct)->a_Member.offUtcInMin, (a_pStruct)->a_Member.fType ))
109	#define UDF_LOG2_MEMBER_CHARSPEC(a_pStruct, a_Member) \
110	do { \
111	if ( (a_pStruct)->a_Member.uType == UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE \
112	&& memcmp(&(a_pStruct)->a_Member.abInfo[0], UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO, \
113	sizeof(UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO)) == 0) \
114	Log2(("ISO/UDF: %-32s OSTA COMPRESSED UNICODE INFO\n", #a_Member ":")); \
115	else if (ASMMemIsZero(&(a_pStruct)->a_Member, sizeof((a_pStruct)->a_Member))) \
116	Log2(("ISO/UDF: %-32s all zeros\n", #a_Member ":")); \
117	else \
118	Log2(("ISO/UDF: %-32s %#x info: %.63Rhxs\n", #a_Member ":", \
119	(a_pStruct)->a_Member.uType, (a_pStruct)->a_Member.abInfo)); \
120	} while (0)
121	#define UDF_LOG2_MEMBER_DSTRING(a_pStruct, a_Member) \
122	do { \
123	if ((a_pStruct)->a_Member[0] == 8) \
124	Log2(("ISO/UDF: %-32s 8: '%s' len=%u (actual=%u)\n", #a_Member ":", &(a_pStruct)->a_Member[1], \
125	(a_pStruct)->a_Member[sizeof((a_pStruct)->a_Member) - 1], \
126	RTStrNLen(&(a_pStruct)->a_Member[1], sizeof((a_pStruct)->a_Member) - 2) + 1 )); \
127	else if ((a_pStruct)->a_Member[0] == 16) \
128	{ \
129	PCRTUTF16 pwszTmp = (PCRTUTF16)&(a_pStruct)->a_Member[1]; \
130	char *pszTmp = NULL; \
131	RTUtf16BigToUtf8Ex(pwszTmp, (sizeof((a_pStruct)->a_Member) - 2) / sizeof(RTUTF16), &pszTmp, 0, NULL); \
132	Log2(("ISO/UDF: %-32s 16: '%s' len=%u (actual=%u)\n", #a_Member ":", pszTmp, \
133	(a_pStruct)->a_Member[sizeof((a_pStruct)->a_Member) - 1], \
134	RTUtf16NLen(pwszTmp, (sizeof((a_pStruct)->a_Member) - 2) / sizeof(RTUTF16)) * sizeof(RTUTF16) + 1 /??/ )); \
135	} \
136	else if (ASMMemIsZero(&(a_pStruct)->a_Member[0], sizeof((a_pStruct)->a_Member))) \
137	Log2(("ISO/UDF: %-32s empty\n", #a_Member ":")); \
138	else \
139	Log2(("ISO/UDF: %-32s bad: %.*Rhxs\n", #a_Member ":", sizeof((a_pStruct)->a_Member), &(a_pStruct)->a_Member[0] )); \
140	} while (0)
141	/** @} */
142
143
144
145	/*********************************************************************************************************************************
146	* Structures and Typedefs *
147	*********************************************************************************************************************************/
148	/** Pointer to an ISO volume (VFS instance data). */
149	typedef struct RTFSISOVOL *PRTFSISOVOL;
150	/** Pointer to a const ISO volume (VFS instance data). */
151	typedef struct RTFSISOVOL const *PCRTFSISOVOL;
152
153	/** Pointer to a ISO directory instance. */
154	typedef struct RTFSISODIRSHRD *PRTFSISODIRSHRD;
155
156
157
158	/**
159	* ISO extent (internal to the VFS not a disk structure).
160	*/
161	typedef struct RTFSISOEXTENT
162	{
163	/** The disk or partition byte offset.
164	* This is set to UINT64_MAX for parts of sparse files that aren't recorded.*/
165	uint64_t off;
166	/** The size of the extent in bytes. */
167	uint64_t cbExtent;
168	/** UDF virtual partition number, UINT32_MAX for ISO 9660. */
169	uint32_t idxPart;
170	/** Reserved. */
171	uint32_t uReserved;
172	} RTFSISOEXTENT;
173	/** Pointer to an ISO 9660 extent. */
174	typedef RTFSISOEXTENT *PRTFSISOEXTENT;
175	/** Pointer to a const ISO 9660 extent. */
176	typedef RTFSISOEXTENT const *PCRTFSISOEXTENT;
177
178
179	/**
180	* ISO file system object, shared part.
181	*/
182	typedef struct RTFSISOCORE
183	{
184	/** The parent directory keeps a list of open objects (RTFSISOCORE). */
185	RTLISTNODE Entry;
186	/** Reference counter. */
187	uint32_t volatile cRefs;
188	/** The parent directory (not released till all children are close). */
189	PRTFSISODIRSHRD pParentDir;
190	/** The byte offset of the first directory record.
191	* This is used when looking up objects in a directory to avoid creating
192	* duplicate instances. */
193	uint64_t offDirRec;
194	/** Attributes. */
195	RTFMODE fAttrib;
196	/** The object size. */
197	uint64_t cbObject;
198	/** The access time. */
199	RTTIMESPEC AccessTime;
200	/** The modificaton time. */
201	RTTIMESPEC ModificationTime;
202	/** The change time. */
203	RTTIMESPEC ChangeTime;
204	/** The birth time. */
205	RTTIMESPEC BirthTime;
206	/** The i-node ID. */
207	RTINODE idINode;
208	/** Pointer to the volume. */
209	PRTFSISOVOL pVol;
210	/** The version number. */
211	uint32_t uVersion;
212	/** Number of extents. */
213	uint32_t cExtents;
214	/** The first extent. */
215	RTFSISOEXTENT FirstExtent;
216	/** Array of additional extents. */
217	PRTFSISOEXTENT paExtents;
218	} RTFSISOCORE;
219	typedef RTFSISOCORE *PRTFSISOCORE;
220
221	/**
222	* ISO file, shared data.
223	*/
224	typedef struct RTFSISOFILESHRD
225	{
226	/** Core ISO9660 object info. */
227	RTFSISOCORE Core;
228	} RTFSISOFILESHRD;
229	/** Pointer to a ISO 9660 file object. */
230	typedef RTFSISOFILESHRD *PRTFSISOFILESHRD;
231
232
233	/**
234	* ISO directory, shared data.
235	*
236	* We will always read in the whole directory just to keep things really simple.
237	*/
238	typedef struct RTFSISODIRSHRD
239	{
240	/** Core ISO 9660 object info. */
241	RTFSISOCORE Core;
242	/** Open child objects (RTFSISOCORE). */
243	RTLISTNODE OpenChildren;
244
245	/** Pointer to the directory content. */
246	uint8_t *pbDir;
247	/** The size of the directory content (duplicate of Core.cbObject). */
248	uint32_t cbDir;
249	} RTFSISODIRSHRD;
250	/** Pointer to a ISO directory instance. */
251	typedef RTFSISODIRSHRD *PRTFSISODIRSHRD;
252
253
254	/**
255	* Private data for a VFS file object.
256	*/
257	typedef struct RTFSISOFILEOBJ
258	{
259	/** Pointer to the shared data. */
260	PRTFSISOFILESHRD pShared;
261	/** The current file offset. */
262	uint64_t offFile;
263	} RTFSISOFILEOBJ;
264	typedef RTFSISOFILEOBJ *PRTFSISOFILEOBJ;
265
266	/**
267	* Private data for a VFS directory object.
268	*/
269	typedef struct RTFSISODIROBJ
270	{
271	/** Pointer to the shared data. */
272	PRTFSISODIRSHRD pShared;
273	/** The current directory offset. */
274	uint32_t offDir;
275	} RTFSISODIROBJ;
276	typedef RTFSISODIROBJ *PRTFSISODIROBJ;
277
278	/** Pointer to info about a UDF volume. */
279	typedef struct RTFSISOUDFVOLINFO *PRTFSISOUDFVOLINFO;
280
281
282	/** @name RTFSISO_UDF_PMAP_T_XXX
283	* @{ */
284	#define RTFSISO_UDF_PMAP_T_PLAIN 1
285	#define RTFSISO_UDF_PMAP_T_VPM_15 2
286	#define RTFSISO_UDF_PMAP_T_VPM_20 3
287	#define RTFSISO_UDF_PMAP_T_SPM 4
288	#define RTFSISO_UDF_PMAP_T_MPM 5
289	/** @} */
290
291	/**
292	* Information about a logical UDF partition.
293	*
294	* This combins information from the partition descriptor, the UDFPARTMAPTYPE1
295	* and the UDFPARTMAPTYPE2 structure.
296	*/
297	typedef struct RTFSISOVOLUDFPMAP
298	{
299	/** Partition starting location as a byte offset. */
300	uint64_t offByteLocation;
301	/** Partition starting location (logical sector number). */
302	uint32_t offLocation;
303	/** Number of sectors. */
304	uint32_t cSectors;
305
306	/** Partition descriptor index (for processing). */
307	uint16_t idxPartDesc;
308	/** Offset info the map table. */
309	uint16_t offMapTable;
310	/** Partition number (not index). */
311	uint16_t uPartitionNo;
312	/** Partition number (not index). */
313	uint16_t uVolumeSeqNo;
314
315	/** The access type (UDF_PART_ACCESS_TYPE_XXX). */
316	uint32_t uAccessType;
317	/** Partition flags (UDF_PARTITION_FLAGS_XXX). */
318	uint16_t fFlags;
319	/** RTFSISO_UDF_PMAP_T_XXX. */
320	uint8_t bType;
321	/** Set if Hdr is valid. */
322	bool fHaveHdr;
323	/** Copy of UDFPARTITIONDESC::ContentsUse::Hdr. */
324	UDFPARTITIONHDRDESC Hdr;
325
326	} RTFSISOVOLUDFPMAP;
327	typedef RTFSISOVOLUDFPMAP *PRTFSISOVOLUDFPMAP;
328
329	/**
330	* Information about a UDF volume (/ volume set).
331	*
332	* This combines information from the primary and logical descriptors.
333	*
334	* @note There is only one volume per volume set in the current UDF
335	* implementation. So, this can be considered a volume and a volume set.
336	*/
337	typedef struct RTFSISOUDFVOLINFO
338	{
339	/** The extent containing the file set descriptor. */
340	UDFLONGAD FileSetDescriptor;
341
342	/** The root directory location (from the file set descriptor). */
343	UDFLONGAD RootDirIcb;
344	/** Location of the system stream directory associated with the file set. */
345	UDFLONGAD SystemStreamDirIcb;
346
347	/** The logical block size on this volume. */
348	uint32_t cbBlock;
349	/** The log2 of cbBlock. */
350	uint32_t cShiftBlock;
351	/** Flags (UDF_PVD_FLAGS_XXX). */
352	uint16_t fFlags;
353
354	/** Number of partitions mapp in this volume. */
355	uint16_t cPartitions;
356	/** Partitions in this volume. */
357	PRTFSISOVOLUDFPMAP paPartitions;
358
359	/** The volume ID string. */
360	UDFDSTRING achLogicalVolumeID[128];
361	} RTFSISOUDFVOLINFO;
362
363
364	/**
365	* Indicates which of the possible content types we're accessing.
366	*/
367	typedef enum RTFSISOVOLTYPE
368	{
369	/** Accessing the primary ISO-9660 volume. */
370	RTFSISOVOLTYPE_ISO9960 = 0,
371	/** Accessing the joliet volume (secondary ISO-9660). */
372	RTFSISOVOLTYPE_JOLIET,
373	/** Accessing the UDF volume. */
374	RTFSISOVOLTYPE_UDF
375	} RTFSISOVOLTYPE;
376
377	/**
378	* A ISO volume.
379	*/
380	typedef struct RTFSISOVOL
381	{
382	/** Handle to itself. */
383	RTVFS hVfsSelf;
384	/** The file, partition, or whatever backing the ISO 9660 volume. */
385	RTVFSFILE hVfsBacking;
386	/** The size of the backing thingy. */
387	uint64_t cbBacking;
388	/** The size of the backing thingy in sectors (cbSector). */
389	uint64_t cBackingSectors;
390	/** Flags. */
391	uint32_t fFlags;
392	/** The sector size (in bytes). */
393	uint32_t cbSector;
394	/** What we're accessing. */
395	RTFSISOVOLTYPE enmType;
396
397	/** @name ISO 9660 specific data
398	* @{ */
399	/** The size of a logical block in bytes. */
400	uint32_t cbBlock;
401	/** The primary volume space size in blocks. */
402	uint32_t cBlocksInPrimaryVolumeSpace;
403	/** The primary volume space size in bytes. */
404	uint64_t cbPrimaryVolumeSpace;
405	/** The number of volumes in the set. */
406	uint32_t cVolumesInSet;
407	/** The primary volume sequence ID. */
408	uint32_t idPrimaryVol;
409	/** Set if using UTF16-2 (joliet). */
410	bool fIsUtf16;
411	/** @} */
412
413	/** UDF specific data. */
414	struct
415	{
416	/** Volume information. */
417	RTFSISOUDFVOLINFO VolInfo;
418	/** The UDF level. */
419	uint8_t uLevel;
420	} Udf;
421
422	/** The root directory shared data. */
423	PRTFSISODIRSHRD pRootDir;
424	} RTFSISOVOL;
425
426
427	/**
428	* Info gathered from a VDS sequence.
429	*/
430	typedef struct RTFSISOVDSINFO
431	{
432	/** Number of entries in apPrimaryVols. */
433	uint32_t cPrimaryVols;
434	/** Number of entries in apLogicalVols. */
435	uint32_t cLogicalVols;
436	/** Number of entries in apPartitions. */
437	uint32_t cPartitions;
438	/** Pointer to primary volume descriptors (native endian). */
439	PUDFPRIMARYVOLUMEDESC apPrimaryVols[8];
440	/** Pointer to logical volume descriptors (native endian). */
441	PUDFLOGICALVOLUMEDESC apLogicalVols[8];
442	/** Pointer to partition descriptors (native endian). */
443	PUDFPARTITIONDESC apPartitions[16];
444
445	/** Created after scanning the sequence (here for cleanup purposes). */
446	PRTFSISOVOLUDFPMAP paPartMaps;
447	} RTFSISOVDSINFO;
448	/** Pointer to VDS sequence info. */
449	typedef RTFSISOVDSINFO *PRTFSISOVDSINFO;
450
451
452
453	/*********************************************************************************************************************************
454	* Global Variables *
455	*********************************************************************************************************************************/
456
457	/*********************************************************************************************************************************
458	* Internal Functions *
459	*********************************************************************************************************************************/
460	static void rtFsIsoDirShrd_AddOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild);
461	static void rtFsIsoDirShrd_RemoveOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild);
462	static int rtFsIsoDir_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec,
463	uint32_t cDirRecs, uint64_t offDirRec, PRTVFSDIR phVfsDir);
464	static int rtFsIsoDir_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, PRTVFSDIR phVfsDir);
465	static PRTFSISOCORE rtFsIsoDir_LookupShared(PRTFSISODIRSHRD pThis, uint64_t offDirRec);
466
467	static int rtFsIsoVolValidateUdfDescCrc(PCUDFTAG pTag, size_t cbDesc, PRTERRINFO pErrInfo);
468	static int rtFsIsoVolValidateUdfDescTag(PCUDFTAG pTag, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo);
469	static int rtFsIsoVolValidateUdfDescTagAndCrc(PCUDFTAG pTag, size_t cbDesc, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo);
470
471
472	/**
473	* UDF virtual partition read function.
474	*
475	* This deals with all the fun related to block mapping and such.
476	*
477	* @returns VBox status code.
478	* @param pThis The instance.
479	* @param idxPart The virtual partition number.
480	* @param idxBlock The block number.
481	* @param offByteAddend The byte offset relative to the block.
482	* @param pvBuf The output buffer.
483	* @param cbToRead The number of bytes to read.
484	*/
485	static int rtFsIsoVolUdfVpRead(PRTFSISOVOL pThis, uint32_t idxPart, uint32_t idxBlock, uint64_t offByteAddend,
486	void *pvBuf, size_t cbToRead)
487	{
488	uint64_t const offByte = ((uint64_t)idxBlock << pThis->Udf.VolInfo.cShiftBlock) + offByteAddend;
489
490	int rc;
491	if (idxPart < pThis->Udf.VolInfo.cPartitions)
492	{
493	PRTFSISOVOLUDFPMAP pPart = &pThis->Udf.VolInfo.paPartitions[idxPart];
494	switch (pPart->bType)
495	{
496	case RTFSISO_UDF_PMAP_T_PLAIN:
497	rc = RTVfsFileReadAt(pThis->hVfsBacking, offByte + pPart->offByteLocation, pvBuf, cbToRead, NULL);
498	if (RT_SUCCESS(rc))
499	{
500	Log3(("ISO/UDF: Read %#x bytes at %#RX64 (%#x:%#RX64)\n",
501	cbToRead, offByte + pPart->offByteLocation, idxPart, offByte));
502	return VINF_SUCCESS;
503	}
504	Log(("ISO/UDF: Error reading %#x bytes at %#RX64 (%#x:%#RX64): %Rrc\n",
505	cbToRead, offByte + pPart->offByteLocation, idxPart, offByte, rc));
506	break;
507
508	default:
509	AssertFailed();
510	rc = VERR_ISOFS_IPE_1;
511	break;
512	}
513	}
514	else
515	{
516	Log(("ISO/UDF: Invalid partition index %#x (offset %#RX64), max partitions %#x\n",
517	idxPart, offByte, pThis->Udf.VolInfo.cPartitions));
518	rc = VERR_ISOFS_INVALID_PARTITION_INDEX;
519	}
520	return rc;
521	}
522
523
524	/**
525	* Returns the length of the version suffix in the given name.
526	*
527	* @returns Number of UTF16-BE chars in the version suffix.
528	* @param pawcName The name to examine.
529	* @param cwcName The length of the name.
530	* @param puValue Where to return the value.
531	*/
532	static size_t rtFsIso9660GetVersionLengthUtf16Big(PCRTUTF16 pawcName, size_t cwcName, uint32_t *puValue)
533	{
534	*puValue = 0;
535
536	/* -1: */
537	if (cwcName <= 2)
538	return 0;
539	RTUTF16 wc1 = RT_BE2H_U16(pawcName[cwcName - 1]);
540	if (!RT_C_IS_DIGIT(wc1))
541	return 0;
542	Assert(wc1 < 0x3a); /* ASSUMES the RT_C_IS_DIGIT macro works just fine on wide chars too. */
543
544	/* -2: */
545	RTUTF16 wc2 = RT_BE2H_U16(pawcName[cwcName - 2]);
546	if (wc2 == ';')
547	{
548	*puValue = wc1 - '0';
549	return 2;
550	}
551	if (!RT_C_IS_DIGIT(wc2) \|\| cwcName <= 3)
552	return 0;
553
554	/* -3: */
555	RTUTF16 wc3 = RT_BE2H_U16(pawcName[cwcName - 3]);
556	if (wc3 == ';')
557	{
558	*puValue = (wc1 - '0')
559	+ (wc2 - '0') * 10;
560	return 3;
561	}
562	if (!RT_C_IS_DIGIT(wc3) \|\| cwcName <= 4)
563	return 0;
564
565	/* -4: */
566	RTUTF16 wc4 = RT_BE2H_U16(pawcName[cwcName - 4]);
567	if (wc4 == ';')
568	{
569	*puValue = (wc1 - '0')
570	+ (wc2 - '0') * 10
571	+ (wc3 - '0') * 100;
572	return 4;
573	}
574	if (!RT_C_IS_DIGIT(wc4) \|\| cwcName <= 5)
575	return 0;
576
577	/* -5: */
578	RTUTF16 wc5 = RT_BE2H_U16(pawcName[cwcName - 5]);
579	if (wc5 == ';')
580	{
581	*puValue = (wc1 - '0')
582	+ (wc2 - '0') * 10
583	+ (wc3 - '0') * 100
584	+ (wc4 - '0') * 1000;
585	return 5;
586	}
587	if (!RT_C_IS_DIGIT(wc5) \|\| cwcName <= 6)
588	return 0;
589
590	/* -6: */
591	RTUTF16 wc6 = RT_BE2H_U16(pawcName[cwcName - 6]);
592	if (wc6 == ';')
593	{
594	*puValue = (wc1 - '0')
595	+ (wc2 - '0') * 10
596	+ (wc3 - '0') * 100
597	+ (wc4 - '0') * 1000
598	+ (wc5 - '0') * 10000;
599	return 6;
600	}
601	return 0;
602	}
603
604
605	/**
606	* Returns the length of the version suffix in the given name.
607	*
608	* @returns Number of chars in the version suffix.
609	* @param pachName The name to examine.
610	* @param cchName The length of the name.
611	* @param puValue Where to return the value.
612	*/
613	static size_t rtFsIso9660GetVersionLengthAscii(const char pachName, size_t cchName, uint32_t puValue)
614	{
615	*puValue = 0;
616
617	/* -1: */
618	if (cchName <= 2)
619	return 0;
620	char ch1 = pachName[cchName - 1];
621	if (!RT_C_IS_DIGIT(ch1))
622	return 0;
623
624	/* -2: */
625	char ch2 = pachName[cchName - 2];
626	if (ch2 == ';')
627	{
628	*puValue = ch1 - '0';
629	return 2;
630	}
631	if (!RT_C_IS_DIGIT(ch2) \|\| cchName <= 3)
632	return 0;
633
634	/* -3: */
635	char ch3 = pachName[cchName - 3];
636	if (ch3 == ';')
637	{
638	*puValue = (ch1 - '0')
639	+ (ch2 - '0') * 10;
640	return 3;
641	}
642	if (!RT_C_IS_DIGIT(ch3) \|\| cchName <= 4)
643	return 0;
644
645	/* -4: */
646	char ch4 = pachName[cchName - 4];
647	if (ch4 == ';')
648	{
649	*puValue = (ch1 - '0')
650	+ (ch2 - '0') * 10
651	+ (ch3 - '0') * 100;
652	return 4;
653	}
654	if (!RT_C_IS_DIGIT(ch4) \|\| cchName <= 5)
655	return 0;
656
657	/* -5: */
658	char ch5 = pachName[cchName - 5];
659	if (ch5 == ';')
660	{
661	*puValue = (ch1 - '0')
662	+ (ch2 - '0') * 10
663	+ (ch3 - '0') * 100
664	+ (ch4 - '0') * 1000;
665	return 5;
666	}
667	if (!RT_C_IS_DIGIT(ch5) \|\| cchName <= 6)
668	return 0;
669
670	/* -6: */
671	if (pachName[cchName - 6] == ';')
672	{
673	*puValue = (ch1 - '0')
674	+ (ch2 - '0') * 10
675	+ (ch3 - '0') * 100
676	+ (ch4 - '0') * 1000
677	+ (ch5 - '0') * 10000;
678	return 6;
679	}
680	return 0;
681	}
682
683
684	/**
685	* Converts an ISO 9660 binary timestamp into an IPRT timesspec.
686	*
687	* @param pTimeSpec Where to return the IRPT time.
688	* @param pIso9660 The ISO 9660 binary timestamp.
689	*/
690	static void rtFsIso9660DateTime2TimeSpec(PRTTIMESPEC pTimeSpec, PCISO9660RECTIMESTAMP pIso9660)
691	{
692	RTTIME Time;
693	Time.fFlags = RTTIME_FLAGS_TYPE_UTC;
694	Time.offUTC = 0;
695	Time.i32Year = pIso9660->bYear + 1900;
696	Time.u8Month = RT_MIN(RT_MAX(pIso9660->bMonth, 1), 12);
697	Time.u8MonthDay = RT_MIN(RT_MAX(pIso9660->bDay, 1), 31);
698	Time.u8WeekDay = UINT8_MAX;
699	Time.u16YearDay = 0;
700	Time.u8Hour = RT_MIN(pIso9660->bHour, 23);
701	Time.u8Minute = RT_MIN(pIso9660->bMinute, 59);
702	Time.u8Second = RT_MIN(pIso9660->bSecond, 59);
703	Time.u32Nanosecond = 0;
704	RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time));
705
706	/* Only apply the UTC offset if it's within reasons. */
707	if (RT_ABS(pIso9660->offUtc) <= 13*4)
708	RTTimeSpecSubSeconds(pTimeSpec, pIso9660->offUtc * 15 * 60 * 60);
709	}
710
711
712	/**
713	* Converts an UDF timestamp into an IPRT timesspec.
714	*
715	* @param pTimeSpec Where to return the IRPT time.
716	* @param pUdf The UDF timestamp.
717	*/
718	static void rtFsIsoUdfTimestamp2TimeSpec(PRTTIMESPEC pTimeSpec, PCUDFTIMESTAMP pUdf)
719	{
720	/* Check the year range before we try convert anything as it's quite possible
721	that this is zero. */
722	if ( pUdf->iYear > 1678
723	&& pUdf->iYear < 2262)
724	{
725	RTTIME Time;
726	Time.fFlags = RTTIME_FLAGS_TYPE_UTC;
727	Time.offUTC = 0;
728	Time.i32Year = pUdf->iYear;
729	Time.u8Month = RT_MIN(RT_MAX(pUdf->uMonth, 1), 12);
730	Time.u8MonthDay = RT_MIN(RT_MAX(pUdf->uDay, 1), 31);
731	Time.u8WeekDay = UINT8_MAX;
732	Time.u16YearDay = 0;
733	Time.u8Hour = RT_MIN(pUdf->uHour, 23);
734	Time.u8Minute = RT_MIN(pUdf->uMinute, 59);
735	Time.u8Second = RT_MIN(pUdf->uSecond, 59);
736	Time.u32Nanosecond = pUdf->cCentiseconds * UINT32_C(10000000)
737	+ pUdf->cHundredsOfMicroseconds * UINT32_C(100000)
738	+ pUdf->cMicroseconds * UINT32_C(1000);
739	RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time));
740
741	/* Only apply the UTC offset if it's within reasons. */
742	if (RT_ABS(pUdf->offUtcInMin) <= 13*60)
743	RTTimeSpecSubSeconds(pTimeSpec, pUdf->offUtcInMin * 60);
744	}
745	else
746	RTTimeSpecSetNano(pTimeSpec, 0);
747	}
748
749
750	/**
751	* Initialization of a RTFSISOCORE structure from a directory record.
752	*
753	* @note The RTFSISOCORE::pParentDir and RTFSISOCORE::Clusters members are
754	* properly initialized elsewhere.
755	*
756	* @returns IRPT status code. Either VINF_SUCCESS or VERR_NO_MEMORY, the latter
757	* only if @a cDirRecs is above 1.
758	* @param pCore The structure to initialize.
759	* @param pDirRec The primary directory record.
760	* @param cDirRecs Number of directory records.
761	* @param offDirRec The offset of the primary directory record.
762	* @param uVersion The file version number.
763	* @param pVol The volume.
764	*/
765	static int rtFsIsoCore_InitFrom9660DirRec(PRTFSISOCORE pCore, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
766	uint64_t offDirRec, uint32_t uVersion, PRTFSISOVOL pVol)
767	{
768	RTListInit(&pCore->Entry);
769	pCore->cRefs = 1;
770	pCore->pParentDir = NULL;
771	pCore->pVol = pVol;
772	pCore->offDirRec = offDirRec;
773	pCore->idINode = offDirRec;
774	pCore->fAttrib = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY
775	? 0755 \| RTFS_TYPE_DIRECTORY \| RTFS_DOS_DIRECTORY
776	: 0644 \| RTFS_TYPE_FILE;
777	if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_HIDDEN)
778	pCore->fAttrib \|= RTFS_DOS_HIDDEN;
779	pCore->cbObject = ISO9660_GET_ENDIAN(&pDirRec->cbData);
780	pCore->uVersion = uVersion;
781	pCore->cExtents = 1;
782	pCore->FirstExtent.cbExtent = pCore->cbObject;
783	pCore->FirstExtent.off = (ISO9660_GET_ENDIAN(&pDirRec->offExtent) + pDirRec->cExtAttrBlocks) * (uint64_t)pVol->cbBlock;
784	pCore->FirstExtent.idxPart = UINT32_MAX;
785	pCore->FirstExtent.uReserved = 0;
786
787	rtFsIso9660DateTime2TimeSpec(&pCore->ModificationTime, &pDirRec->RecTime);
788	pCore->BirthTime = pCore->ModificationTime;
789	pCore->AccessTime = pCore->ModificationTime;
790	pCore->ChangeTime = pCore->ModificationTime;
791
792	/*
793	* Deal with multiple extents.
794	*/
795	if (RT_LIKELY(cDirRecs == 1))
796	{ /* done */ }
797	else
798	{
799	PRTFSISOEXTENT pCurExtent = &pCore->FirstExtent;
800	while (cDirRecs > 1)
801	{
802	offDirRec += pDirRec->cbDirRec;
803	pDirRec = (PCISO9660DIRREC)((uintptr_t)pDirRec + pDirRec->cbDirRec);
804	if (pDirRec->cbDirRec != 0)
805	{
806	uint64_t offDisk = ISO9660_GET_ENDIAN(&pDirRec->offExtent) * (uint64_t)pVol->cbBlock;
807	uint32_t cbExtent = ISO9660_GET_ENDIAN(&pDirRec->cbData);
808	pCore->cbObject += cbExtent;
809
810	if (pCurExtent->off + pCurExtent->cbExtent == offDisk)
811	pCurExtent->cbExtent += cbExtent;
812	else
813	{
814	void pvNew = RTMemRealloc(pCore->paExtents, pCore->cExtents sizeof(pCore->paExtents[0]));
815	if (pvNew)
816	pCore->paExtents = (PRTFSISOEXTENT)pvNew;
817	else
818	{
819	RTMemFree(pCore->paExtents);
820	return VERR_NO_MEMORY;
821	}
822	pCurExtent = &pCore->paExtents[pCore->cExtents - 1];
823	pCurExtent->cbExtent = cbExtent;
824	pCurExtent->off = offDisk;
825	pCurExtent->idxPart = UINT32_MAX;
826	pCurExtent->uReserved = 0;
827	pCore->cExtents++;
828	}
829	cDirRecs--;
830	}
831	else
832	{
833	size_t cbSkip = (offDirRec + pVol->cbSector) & ~(pVol->cbSector - 1U);
834	offDirRec += cbSkip;
835	pDirRec = (PCISO9660DIRREC)((uintptr_t)pDirRec + cbSkip);
836	}
837	}
838	}
839	return VINF_SUCCESS;
840	}
841
842
843	/**
844	* Initalizes the allocation extends of a core structure.
845	*
846	* @returns IPRT status code
847	* @param pCore The core structure.
848	* @param pbAllocDescs Pointer to the allocation descriptor data.
849	* @param cbAllocDescs The size of the allocation descriptor data.
850	* @param fIcbTagFlags The ICB tag flags.
851	* @param idxDefaultPart The default data partition.
852	* @param offAllocDescs The disk byte offset corresponding to @a pbAllocDesc
853	* in case it's used as data storage (type 3).
854	* @param pVol The volume instance data.
855	*/
856	static int rtFsIsoCore_InitExtentsUdfIcbEntry(PRTFSISOCORE pCore, uint8_t const *pbAllocDescs, uint32_t cbAllocDescs,
857	uint32_t fIcbTagFlags, uint32_t idxDefaultPart, uint64_t offAllocDescs,
858	PRTFSISOVOL pVol)
859	{
860	/*
861	* Just in case there are mutiple file entries in the ICB.
862	*/
863	if (pCore->paExtents != NULL)
864	{
865	LogRelMax(45, ("ISO/UDF: Re-reading extents - multiple file entries?\n"));
866	RTMemFree(pCore->paExtents);
867	pCore->paExtents = NULL;
868	}
869
870	/*
871	* Figure the (minimal) size of an allocation descriptor, deal with the
872	* embedded storage and invalid descriptor types.
873	*/
874	uint32_t cbOneDesc;
875	switch (fIcbTagFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
876	{
877	case UDF_ICB_FLAGS_AD_TYPE_EMBEDDED:
878	pCore->cExtents = 1;
879	pCore->FirstExtent.cbExtent = cbAllocDescs;
880	pCore->FirstExtent.off = offAllocDescs;
881	pCore->FirstExtent.idxPart = idxDefaultPart;
882	return VINF_SUCCESS;
883
884	case UDF_ICB_FLAGS_AD_TYPE_SHORT: cbOneDesc = sizeof(UDFSHORTAD); break;
885	case UDF_ICB_FLAGS_AD_TYPE_LONG: cbOneDesc = sizeof(UDFLONGAD); break;
886	case UDF_ICB_FLAGS_AD_TYPE_EXTENDED: cbOneDesc = sizeof(UDFEXTAD); break;
887
888	default:
889	LogRelMax(45, ("ISO/UDF: Unknown allocation descriptor type %#x\n", fIcbTagFlags));
890	return VERR_ISO_FS_UNKNOWN_AD_TYPE;
891	}
892	if (cbAllocDescs >= cbOneDesc)
893	{
894	/*
895	* Loop thru the allocation descriptors.
896	*/
897	PRTFSISOEXTENT pCurExtent = NULL;
898	union
899	{
900	uint8_t const *pb;
901	PCUDFSHORTAD pShort;
902	PCUDFLONGAD pLong;
903	PCUDFEXTAD pExt;
904	} uPtr;
905	uPtr.pb = pbAllocDescs;
906	do
907	{
908	/* Extract the information we need from the descriptor. */
909	uint32_t idxBlock;
910	uint32_t idxPart;
911	uint32_t cb;
912	uint8_t uType;
913	switch (fIcbTagFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
914	{
915	case UDF_ICB_FLAGS_AD_TYPE_SHORT:
916	uType = uPtr.pShort->uType;
917	cb = uPtr.pShort->cb;
918	idxBlock = uPtr.pShort->off;
919	idxPart = idxDefaultPart;
920	cbAllocDescs -= sizeof(*uPtr.pShort);
921	uPtr.pShort++;
922	break;
923	case UDF_ICB_FLAGS_AD_TYPE_LONG:
924	uType = uPtr.pLong->uType;
925	cb = uPtr.pLong->cb;
926	idxBlock = uPtr.pLong->Location.off;
927	idxPart = uPtr.pLong->Location.uPartitionNo;
928	cbAllocDescs -= sizeof(*uPtr.pLong);
929	uPtr.pLong++;
930	break;
931	case UDF_ICB_FLAGS_AD_TYPE_EXTENDED:
932	if ( uPtr.pExt->cbInformation > cbAllocDescs
933	\|\| uPtr.pExt->cbInformation < sizeof(*uPtr.pExt))
934	return VERR_ISOFS_BAD_EXTAD;
935	uType = uPtr.pExt->uType;
936	cb = uPtr.pExt->cb;
937	idxBlock = uPtr.pExt->Location.off;
938	idxPart = uPtr.pExt->Location.uPartitionNo;
939	cbAllocDescs -= uPtr.pExt->cbInformation;
940	uPtr.pb += uPtr.pExt->cbInformation;
941	break;
942	default:
943	AssertFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE);
944	}
945
946	/* Check if we can extend the current extent. This is useful since
947	the descriptors can typically only cover 1GB. */
948	uint64_t const off = (uint64_t)idxBlock << pVol->Udf.VolInfo.cShiftBlock;
949	if ( pCurExtent != NULL
950	&& ( pCurExtent->off != UINT64_MAX
951	? uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED
952	&& pCurExtent->off + pCurExtent->cbExtent == off
953	&& pCurExtent->idxPart == idxPart
954	: uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED) )
955	pCurExtent->cbExtent += cb;
956	else
957	{
958	/* Allocate a new descriptor. */
959	if (pCore->cExtents == 0)
960	{
961	pCore->cExtents = 1;
962	pCurExtent = &pCore->FirstExtent;
963	}
964	else
965	{
966	void pvNew = RTMemRealloc(pCore->paExtents, pCore->cExtents sizeof(pCore->paExtents[0]));
967	if (pvNew)
968	pCore->paExtents = (PRTFSISOEXTENT)pvNew;
969	else
970	{
971	RTMemFree(pCore->paExtents);
972	pCore->paExtents = NULL;
973	pCore->cExtents = 0;
974	return VERR_NO_MEMORY;
975	}
976	pCurExtent = &pCore->paExtents[pCore->cExtents - 1];
977	pCore->cExtents++;
978	}
979
980	/* Initialize it. */
981	if (uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
982	{
983	pCurExtent->off = off;
984	pCurExtent->idxPart = idxPart;
985	}
986	else
987	{
988	pCurExtent->off = UINT64_MAX;
989	pCurExtent->idxPart = UINT32_MAX;
990	}
991	pCurExtent->cbExtent = cb;
992	pCurExtent->uReserved = 0;
993	}
994	} while (cbAllocDescs >= cbOneDesc);
995
996	if (cbAllocDescs > 0)
997	LogRelMax(45,("ISO/UDF: Warning! %u bytes left in allocation descriptor: %.*Rhxs\n", cbAllocDescs, cbAllocDescs, uPtr.pb));
998	}
999	else
1000	{
1001	/*
1002	* Zero descriptors
1003	*/
1004	pCore->cExtents = 0;
1005	pCore->FirstExtent.off = UINT64_MAX;
1006	pCore->FirstExtent.cbExtent = 0;
1007	pCore->FirstExtent.idxPart = UINT32_MAX;
1008
1009	if (cbAllocDescs > 0)
1010	LogRelMax(45, ("ISO/UDF: Warning! Allocation descriptor area is shorted than one descriptor: %#u vs %#u: %.*Rhxs\n",
1011	cbAllocDescs, cbOneDesc, cbAllocDescs, pbAllocDescs));
1012	}
1013	return VINF_SUCCESS;
1014	}
1015
1016
1017	/**
1018	* Converts ICB flags, ICB file type and file entry permissions to an IPRT file
1019	* mode mask.
1020	*
1021	* @returns IPRT status ocde
1022	* @param fIcbTagFlags The ICB flags.
1023	* @param bFileType The ICB file type.
1024	* @param fPermission The file entry permission mask.
1025	* @param pfAttrib Where to return the IRPT file mode mask.
1026	*/
1027	static int rtFsIsoCore_UdfStuffToFileMode(uint32_t fIcbTagFlags, uint8_t bFileType, uint32_t fPermission, PRTFMODE pfAttrib)
1028	{
1029	/*
1030	* Type:
1031	*/
1032	RTFMODE fAttrib;
1033	switch (bFileType)
1034	{
1035	case UDF_FILE_TYPE_DIRECTORY:
1036	fAttrib = RTFS_TYPE_DIRECTORY \| RTFS_DOS_DIRECTORY;
1037	break;
1038
1039	case UDF_FILE_TYPE_REGULAR_FILE:
1040	case UDF_FILE_TYPE_REAL_TIME_FILE:
1041	fAttrib = RTFS_TYPE_FILE;
1042	break;
1043
1044	case UDF_FILE_TYPE_SYMBOLIC_LINK:
1045	fAttrib = RTFS_TYPE_SYMLINK;
1046	break;
1047
1048	case UDF_FILE_TYPE_BLOCK_DEVICE:
1049	fAttrib = RTFS_TYPE_DEV_BLOCK;
1050	break;
1051	case UDF_FILE_TYPE_CHARACTER_DEVICE:
1052	fAttrib = RTFS_TYPE_DEV_CHAR;
1053	break;
1054
1055	case UDF_FILE_TYPE_FIFO:
1056	fAttrib = RTFS_TYPE_FIFO;
1057	break;
1058
1059	case UDF_FILE_TYPE_SOCKET:
1060	fAttrib = RTFS_TYPE_SOCKET;
1061	break;
1062
1063	case UDF_FILE_TYPE_STREAM_DIRECTORY:
1064	case UDF_FILE_TYPE_EXTENDED_ATTRIBUTES:
1065	case UDF_FILE_TYPE_TERMINAL_ENTRY:
1066	case UDF_FILE_TYPE_VAT:
1067	case UDF_FILE_TYPE_METADATA_FILE:
1068	case UDF_FILE_TYPE_METADATA_MIRROR_FILE:
1069	case UDF_FILE_TYPE_METADATA_BITMAP_FILE:
1070	case UDF_FILE_TYPE_NOT_SPECIFIED:
1071	case UDF_FILE_TYPE_INDIRECT_ENTRY:
1072	case UDF_FILE_TYPE_UNALLOCATED_SPACE_ENTRY:
1073	case UDF_FILE_TYPE_PARTITION_INTEGRITY_ENTRY:
1074	LogRelMax(45, ("ISO/UDF: Warning! Wrong file type: %#x\n", bFileType));
1075	return VERR_ISOFS_WRONG_FILE_TYPE;
1076
1077	default:
1078	LogRelMax(45, ("ISO/UDF: Warning! Unknown file type: %#x\n", bFileType));
1079	return VERR_ISOFS_UNKNOWN_FILE_TYPE;
1080	}
1081
1082	/*
1083	* Permissions:
1084	*/
1085	if (fPermission & UDF_PERM_OTH_EXEC)
1086	fAttrib \|= RTFS_UNIX_IXOTH;
1087	if (fPermission & UDF_PERM_OTH_READ)
1088	fAttrib \|= RTFS_UNIX_IROTH;
1089	if (fPermission & UDF_PERM_OTH_WRITE)
1090	fAttrib \|= RTFS_UNIX_IWOTH;
1091
1092	if (fPermission & UDF_PERM_GRP_EXEC)
1093	fAttrib \|= RTFS_UNIX_IXGRP;
1094	if (fPermission & UDF_PERM_GRP_READ)
1095	fAttrib \|= RTFS_UNIX_IRGRP;
1096	if (fPermission & UDF_PERM_GRP_WRITE)
1097	fAttrib \|= RTFS_UNIX_IWGRP;
1098
1099	if (fPermission & UDF_PERM_USR_EXEC)
1100	fAttrib \|= RTFS_UNIX_IXUSR;
1101	if (fPermission & UDF_PERM_USR_READ)
1102	fAttrib \|= RTFS_UNIX_IRUSR;
1103	if (fPermission & UDF_PERM_USR_WRITE)
1104	fAttrib \|= RTFS_UNIX_IWUSR;
1105
1106	if ( !(fAttrib & (UDF_PERM_OTH_WRITE \| UDF_PERM_GRP_WRITE \| UDF_PERM_USR_WRITE))
1107	&& (fAttrib & (UDF_PERM_OTH_READ \| UDF_PERM_GRP_READ \| UDF_PERM_USR_READ)) )
1108	fAttrib \|= RTFS_DOS_READONLY;
1109
1110	/*
1111	* Attributes:
1112	*/
1113	if (fIcbTagFlags & UDF_ICB_FLAGS_ARCHIVE)
1114	fAttrib \|= RTFS_DOS_ARCHIVED;
1115	if (fIcbTagFlags & UDF_ICB_FLAGS_SYSTEM)
1116	fAttrib \|= RTFS_DOS_SYSTEM;
1117	if (fIcbTagFlags & UDF_ICB_FLAGS_ARCHIVE)
1118	fAttrib \|= RTFS_DOS_ARCHIVED;
1119
1120	if (fIcbTagFlags & UDF_ICB_FLAGS_SET_UID)
1121	fAttrib \|= RTFS_UNIX_ISUID;
1122	if (fIcbTagFlags & UDF_ICB_FLAGS_SET_GID)
1123	fAttrib \|= RTFS_UNIX_ISGID;
1124	if (fIcbTagFlags & UDF_ICB_FLAGS_STICKY)
1125	fAttrib \|= RTFS_UNIX_ISTXT;
1126
1127	/* Warn about weird flags. */
1128	if (fIcbTagFlags & UDF_ICB_FLAGS_TRANSFORMED)
1129	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_TRANSFORMED!\n"));
1130	if (fIcbTagFlags & UDF_ICB_FLAGS_MULTI_VERSIONS)
1131	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_MULTI_VERSIONS!\n"));
1132	if (fIcbTagFlags & UDF_ICB_FLAGS_STREAM)
1133	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_STREAM!\n"));
1134	if (fIcbTagFlags & UDF_ICB_FLAGS_RESERVED_MASK)
1135	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_RESERVED_MASK (%#x)!\n", fIcbTagFlags & UDF_ICB_FLAGS_RESERVED_MASK));
1136
1137	*pfAttrib = fAttrib;
1138	return VINF_SUCCESS;
1139	}
1140
1141
1142	/**
1143	* Initialize/update a core object structure from an UDF extended file entry.
1144	*
1145	* @returns IPRT status code
1146	* @param pCore The core object structure to initialize.
1147	* @param pFileEntry The file entry.
1148	* @param idxDefaultPart The default data partition.
1149	* @param pcProcessed Variable to increment on success.
1150	* @param pVol The volume instance.
1151	*/
1152	static int rtFsIsoCore_InitFromUdfIcbExFileEntry(PRTFSISOCORE pCore, PCUDFEXFILEENTRY pFileEntry, uint32_t idxDefaultPart,
1153	uint32_t *pcProcessed, PRTFSISOVOL pVol)
1154	{
1155	#ifdef LOG_ENABLED
1156	/*
1157	* Log it.
1158	*/
1159	if (LogIs2Enabled())
1160	{
1161	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", IcbTag.cEntiresBeforeThis);
1162	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.uStrategyType);
1163	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[0]);
1164	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[1]);
1165	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.cMaxEntries);
1166	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bReserved);
1167	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bFileType);
1168	UDF_LOG2_MEMBER_LBADDR(pFileEntry, IcbTag.ParentIcb);
1169	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.fFlags);
1170	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uid);
1171	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", gid);
1172	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", fPermissions);
1173	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", cHardlinks);
1174	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", uRecordFormat);
1175	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", fRecordDisplayAttribs);
1176	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbRecord);
1177	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbData);
1178	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbObject);
1179	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cLogicalBlocks);
1180	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, AccessTime);
1181	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ModificationTime);
1182	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, BirthTime);
1183	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ChangeTime);
1184	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uCheckpoint);
1185	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uReserved);
1186	UDF_LOG2_MEMBER_LONGAD(pFileEntry, ExtAttribIcb);
1187	UDF_LOG2_MEMBER_LONGAD(pFileEntry, StreamDirIcb);
1188	UDF_LOG2_MEMBER_ENTITY_ID(pFileEntry, idImplementation);
1189	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", INodeId);
1190	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbExtAttribs);
1191	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbAllocDescs);
1192	if (pFileEntry->cbExtAttribs > 0)
1193	Log2((pFileEntry->cbExtAttribs <= 16 ? "ISO/UDF: %-32s %.Rhxs\n" : "ISO/UDF: %-32s\n%.RhxD\n",
1194	"abExtAttribs:", pFileEntry->cbExtAttribs, pFileEntry->abExtAttribs));
1195	if (pFileEntry->cbAllocDescs > 0)
1196	switch (pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
1197	{
1198	case UDF_ICB_FLAGS_AD_TYPE_SHORT:
1199	{
1200	PCUDFSHORTAD paDescs = (PCUDFSHORTAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1201	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1202	for (uint32_t i = 0; i < cDescs; i++)
1203	Log2(("ISO/UDF: ShortAD[%u]: %#010RX32 LB %#010RX32; type=%u\n",
1204	i, paDescs[i].off, paDescs[i].cb, paDescs[i].uType));
1205	break;
1206	}
1207	case UDF_ICB_FLAGS_AD_TYPE_LONG:
1208	{
1209	PCUDFLONGAD paDescs = (PCUDFLONGAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1210	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1211	for (uint32_t i = 0; i < cDescs; i++)
1212	Log2(("ISO/UDF: LongAD[%u]: %#06RX16:%#010RX32 LB %#010RX32; type=%u iu=%.6Rhxs\n",
1213	i, paDescs[i].Location.uPartitionNo, paDescs[i].Location.off,
1214	paDescs[i].cb, paDescs[i].uType, &paDescs[i].ImplementationUse));
1215	break;
1216	}
1217	default:
1218	Log2(("ISO/UDF: %-32s Type=%u\n%.*RhxD\n",
1219	"abExtAttribs:", pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK,
1220	pFileEntry->cbAllocDescs, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]));
1221	break;
1222	}
1223	}
1224	#endif
1225
1226	/*
1227	* Basic sanity checking of what we use.
1228	*/
1229	if ( RT_OFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs + pFileEntry->cbAllocDescs
1230	> pVol->Udf.VolInfo.cbBlock
1231	\|\| (pFileEntry->cbExtAttribs & 3) != 0
1232	\|\| pFileEntry->cbExtAttribs >= pVol->Udf.VolInfo.cbBlock
1233	\|\| (pFileEntry->cbAllocDescs & 3) != 0
1234	\|\| pFileEntry->cbAllocDescs >= pVol->Udf.VolInfo.cbBlock)
1235	{
1236	LogRelMax(45, ("ISO/UDF: Extended file entry (ICB) is bad size values: cbAllocDesc=%#x cbExtAttribs=%#x (cbBlock=%#x)\n",
1237	pFileEntry->cbAllocDescs, pFileEntry->cbExtAttribs, pVol->Udf.VolInfo.cbBlock));
1238	return VERR_ISOFS_BAD_FILE_ENTRY;
1239	}
1240
1241	//pCore->uid = pFileEntry->uid;
1242	//pCore->gid = pFileEntry->gid;
1243	//pCore->cHardlinks = RT_MIN(pFileEntry->cHardlinks, 1);
1244	pCore->cbObject = pFileEntry->cbData;
1245	//pCore->cbAllocated = pFileEntry->cLogicalBlocks << pVol->Udf.VolInfo.cShiftBlock;
1246	pCore->idINode = pFileEntry->INodeId;
1247
1248	rtFsIsoUdfTimestamp2TimeSpec(&pCore->AccessTime, &pFileEntry->AccessTime);
1249	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ModificationTime, &pFileEntry->ModificationTime);
1250	rtFsIsoUdfTimestamp2TimeSpec(&pCore->BirthTime, &pFileEntry->BirthTime);
1251	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ChangeTime, &pFileEntry->ChangeTime);
1252
1253	if ( pFileEntry->uRecordFormat
1254	\|\| pFileEntry->fRecordDisplayAttribs
1255	\|\| pFileEntry->cbRecord)
1256	LogRelMax(45, ("ISO/UDF: uRecordFormat=%#x fRecordDisplayAttribs=%#x cbRecord=%#x\n",
1257	pFileEntry->uRecordFormat, pFileEntry->fRecordDisplayAttribs, pFileEntry->cbRecord));
1258
1259	/*
1260	* Conver the file mode.
1261	*/
1262	int rc = rtFsIsoCore_UdfStuffToFileMode(pFileEntry->IcbTag.fFlags, pFileEntry->IcbTag.bFileType,
1263	pFileEntry->fPermissions, &pCore->fAttrib);
1264	if (RT_SUCCESS(rc))
1265	{
1266	/*
1267	* Convert extent info.
1268	*/
1269	rc = rtFsIsoCore_InitExtentsUdfIcbEntry(pCore,
1270	&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs],
1271	pFileEntry->cbAllocDescs,
1272	pFileEntry->IcbTag.fFlags,
1273	idxDefaultPart,
1274	((uint64_t)pFileEntry->Tag.offTag << pVol->Udf.VolInfo.cShiftBlock)
1275	+ RT_OFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs,
1276	pVol);
1277	if (RT_SUCCESS(rc))
1278	{
1279	/*
1280	* We're good.
1281	*/
1282	*pcProcessed += 1;
1283	return VINF_SUCCESS;
1284	}
1285
1286	/* Just in case. */
1287	if (pCore->paExtents)
1288	{
1289	RTMemFree(pCore->paExtents);
1290	pCore->paExtents = NULL;
1291	}
1292	pCore->cExtents = 0;
1293	}
1294	return rc;
1295	}
1296
1297
1298	/**
1299	* Initialize/update a core object structure from an UDF file entry.
1300	*
1301	* @returns IPRT status code
1302	* @param pCore The core object structure to initialize.
1303	* @param pFileEntry The file entry.
1304	* @param idxDefaultPart The default data partition.
1305	* @param pcProcessed Variable to increment on success.
1306	* @param pVol The volume instance.
1307	*/
1308	static int rtFsIsoCore_InitFromUdfIcbFileEntry(PRTFSISOCORE pCore, PCUDFFILEENTRY pFileEntry, uint32_t idxDefaultPart,
1309	uint32_t *pcProcessed, PRTFSISOVOL pVol)
1310	{
1311	#ifdef LOG_ENABLED
1312	/*
1313	* Log it.
1314	*/
1315	if (LogIs2Enabled())
1316	{
1317	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", IcbTag.cEntiresBeforeThis);
1318	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.uStrategyType);
1319	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[0]);
1320	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[1]);
1321	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.cMaxEntries);
1322	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bReserved);
1323	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bFileType);
1324	UDF_LOG2_MEMBER_LBADDR(pFileEntry, IcbTag.ParentIcb);
1325	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.fFlags);
1326	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uid);
1327	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", gid);
1328	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", fPermissions);
1329	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", cHardlinks);
1330	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", uRecordFormat);
1331	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", fRecordDisplayAttribs);
1332	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbRecord);
1333	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbData);
1334	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cLogicalBlocks);
1335	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, AccessTime);
1336	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ModificationTime);
1337	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ChangeTime);
1338	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uCheckpoint);
1339	UDF_LOG2_MEMBER_LONGAD(pFileEntry, ExtAttribIcb);
1340	UDF_LOG2_MEMBER_ENTITY_ID(pFileEntry, idImplementation);
1341	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", INodeId);
1342	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbExtAttribs);
1343	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbAllocDescs);
1344	if (pFileEntry->cbExtAttribs > 0)
1345	Log2((pFileEntry->cbExtAttribs <= 16 ? "ISO/UDF: %-32s %.Rhxs\n" : "ISO/UDF: %-32s\n%.RhxD\n",
1346	"abExtAttribs:", pFileEntry->cbExtAttribs, pFileEntry->abExtAttribs));
1347	if (pFileEntry->cbAllocDescs > 0)
1348	switch (pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
1349	{
1350	case UDF_ICB_FLAGS_AD_TYPE_SHORT:
1351	{
1352	PCUDFSHORTAD paDescs = (PCUDFSHORTAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1353	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1354	for (uint32_t i = 0; i < cDescs; i++)
1355	Log2(("ISO/UDF: ShortAD[%u]: %#010RX32 LB %#010RX32; type=%u\n",
1356	i, paDescs[i].off, paDescs[i].cb, paDescs[i].uType));
1357	break;
1358	}
1359	case UDF_ICB_FLAGS_AD_TYPE_LONG:
1360	{
1361	PCUDFLONGAD paDescs = (PCUDFLONGAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1362	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1363	for (uint32_t i = 0; i < cDescs; i++)
1364	Log2(("ISO/UDF: LongAD[%u]: %#06RX16:%#010RX32 LB %#010RX32; type=%u iu=%.6Rhxs\n",
1365	i, paDescs[i].Location.uPartitionNo, paDescs[i].Location.off,
1366	paDescs[i].cb, paDescs[i].uType, &paDescs[i].ImplementationUse));
1367	break;
1368	}
1369	default:
1370	Log2(("ISO/UDF: %-32s Type=%u\n%.*RhxD\n",
1371	"abExtAttribs:", pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK,
1372	pFileEntry->cbAllocDescs, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]));
1373	break;
1374	}
1375	}
1376	#endif
1377
1378	/*
1379	* Basic sanity checking of what we use.
1380	*/
1381	if ( RT_OFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs + pFileEntry->cbAllocDescs
1382	> pVol->Udf.VolInfo.cbBlock
1383	\|\| (pFileEntry->cbExtAttribs & 3) != 0
1384	\|\| pFileEntry->cbExtAttribs >= pVol->Udf.VolInfo.cbBlock
1385	\|\| (pFileEntry->cbAllocDescs & 3) != 0
1386	\|\| pFileEntry->cbAllocDescs >= pVol->Udf.VolInfo.cbBlock)
1387	{
1388	LogRelMax(45, ("ISO/UDF: File entry (ICB) is bad size values: cbAllocDesc=%#x cbExtAttribs=%#x (cbBlock=%#x)\n",
1389	pFileEntry->cbAllocDescs, pFileEntry->cbExtAttribs, pVol->Udf.VolInfo.cbBlock));
1390	return VERR_ISOFS_BAD_FILE_ENTRY;
1391	}
1392
1393	//pCore->uid = pFileEntry->uid;
1394	//pCore->gid = pFileEntry->gid;
1395	//pCore->cHardlinks = RT_MIN(pFileEntry->cHardlinks, 1);
1396	pCore->cbObject = pFileEntry->cbData;
1397	//pCore->cbAllocated = pFileEntry->cLogicalBlocks << pVol->Udf.VolInfo.cShiftBlock;
1398	pCore->idINode = pFileEntry->INodeId;
1399
1400	rtFsIsoUdfTimestamp2TimeSpec(&pCore->AccessTime, &pFileEntry->AccessTime);
1401	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ModificationTime, &pFileEntry->ModificationTime);
1402	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ChangeTime, &pFileEntry->ChangeTime);
1403	pCore->BirthTime = pCore->ModificationTime;
1404	if (RTTimeSpecCompare(&pCore->BirthTime, &pCore->ChangeTime) > 0)
1405	pCore->BirthTime = pCore->ChangeTime;
1406	if (RTTimeSpecCompare(&pCore->BirthTime, &pCore->AccessTime) > 0)
1407	pCore->BirthTime = pCore->AccessTime;
1408
1409	if ( pFileEntry->uRecordFormat
1410	\|\| pFileEntry->fRecordDisplayAttribs
1411	\|\| pFileEntry->cbRecord)
1412	LogRelMax(45, ("ISO/UDF: uRecordFormat=%#x fRecordDisplayAttribs=%#x cbRecord=%#x\n",
1413	pFileEntry->uRecordFormat, pFileEntry->fRecordDisplayAttribs, pFileEntry->cbRecord));
1414
1415	/*
1416	* Conver the file mode.
1417	*/
1418	int rc = rtFsIsoCore_UdfStuffToFileMode(pFileEntry->IcbTag.fFlags, pFileEntry->IcbTag.bFileType,
1419	pFileEntry->fPermissions, &pCore->fAttrib);
1420	if (RT_SUCCESS(rc))
1421	{
1422	/*
1423	* Convert extent info.
1424	*/
1425	rc = rtFsIsoCore_InitExtentsUdfIcbEntry(pCore,
1426	&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs],
1427	pFileEntry->cbAllocDescs,
1428	pFileEntry->IcbTag.fFlags,
1429	idxDefaultPart,
1430	((uint64_t)pFileEntry->Tag.offTag << pVol->Udf.VolInfo.cShiftBlock)
1431	+ RT_OFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs,
1432	pVol);
1433	if (RT_SUCCESS(rc))
1434	{
1435	/*
1436	* We're good.
1437	*/
1438	*pcProcessed += 1;
1439	return VINF_SUCCESS;
1440	}
1441
1442	/* Just in case. */
1443	if (pCore->paExtents)
1444	{
1445	RTMemFree(pCore->paExtents);
1446	pCore->paExtents = NULL;
1447	}
1448	pCore->cExtents = 0;
1449	}
1450	return rc;
1451	}
1452
1453
1454	/**
1455	* Recursive helper for rtFsIsoCore_InitFromUdfIcbAndFileIdDesc.
1456	*
1457	* @returns IRPT status code.
1458	* @param pCore The core structure to initialize.
1459	* @param AllocDesc The ICB allocation descriptor.
1460	* @param pbBuf The buffer, one logical block in size.
1461	* @param cNestings The number of recursive nestings (should be zero).
1462	* @param pcProcessed Variable to update when we've processed something
1463	* useful.
1464	* @param pcIndirections Variable tracing the number of indirections we've
1465	* taken during the processing. This is used to
1466	* prevent us from looping forever on a bad chain
1467	* @param pVol The volue instance data.
1468	*/
1469	static int rtFsIsoCore_InitFromUdfIcbRecursive(PRTFSISOCORE pCore, UDFLONGAD AllocDesc, uint8_t *pbBuf, uint32_t cNestings,
1470	uint32_t pcProcessed, uint32_t pcIndirections, PRTFSISOVOL pVol)
1471	{
1472	if (cNestings >= 8)
1473	return VERR_ISOFS_TOO_DEEP_ICB_RECURSION;
1474
1475	for (;;)
1476	{
1477	if (*pcIndirections >= 32)
1478	return VERR_ISOFS_TOO_MANY_ICB_INDIRECTIONS;
1479
1480	/*
1481	* Check the basic validity of the allocation descriptor.
1482	*/
1483	if ( AllocDesc.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED
1484	&& AllocDesc.cb >= sizeof(UDFICBTAG) )
1485	{ /* likely */ }
1486	else if (AllocDesc.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
1487	{
1488	Log(("ISO/UDF: ICB has alloc type %d!\n", AllocDesc.uType));
1489	return VINF_SUCCESS;
1490	}
1491	else
1492	{
1493	LogRelMax(45, ("ISO/UDF: ICB is too small: %u bytes\n", AllocDesc.cb));
1494	return AllocDesc.cb == 0 ? VINF_SUCCESS : VERR_ISOFS_ICB_ENTRY_TOO_SMALL;
1495	}
1496
1497	/*
1498	* Process it block by block.
1499	*/
1500	uint32_t cBlocks = (AllocDesc.cb + pVol->Udf.VolInfo.cbBlock - 1) >> pVol->Udf.VolInfo.cShiftBlock;
1501	for (uint32_t idxBlock = 0; ; idxBlock++)
1502	{
1503	/*
1504	* Read a block
1505	*/
1506	size_t cbToRead = RT_MIN(pVol->Udf.VolInfo.cbBlock, AllocDesc.cb);
1507	int rc = rtFsIsoVolUdfVpRead(pVol, AllocDesc.Location.uPartitionNo, AllocDesc.Location.off + idxBlock, 0,
1508	pbBuf, cbToRead);
1509	if (RT_FAILURE(rc))
1510	return rc;
1511	if (cbToRead < pVol->Udf.VolInfo.cbBlock)
1512	RT_BZERO(&pbBuf[cbToRead], pVol->Udf.VolInfo.cbBlock - cbToRead);
1513
1514	/*
1515	* Verify the TAG.
1516	*/
1517	PUDFICBHDR pHdr = (PUDFICBHDR)pbBuf;
1518	rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pHdr->Tag, pVol->Udf.VolInfo.cbBlock, UINT16_MAX,
1519	AllocDesc.Location.off + idxBlock, NULL);
1520	if (RT_FAILURE(rc))
1521	return rc;
1522
1523	/*
1524	* Do specific processing.
1525	*/
1526	if (pHdr->Tag.idTag == UDF_TAG_ID_FILE_ENTRY)
1527	rc = rtFsIsoCore_InitFromUdfIcbFileEntry(pCore, (PCUDFFILEENTRY)pHdr, AllocDesc.Location.uPartitionNo,
1528	pcProcessed, pVol);
1529	else if (pHdr->Tag.idTag == UDF_TAG_ID_EXTENDED_FILE_ENTRY)
1530	rc = rtFsIsoCore_InitFromUdfIcbExFileEntry(pCore, (PCUDFEXFILEENTRY)pHdr, AllocDesc.Location.uPartitionNo,
1531	pcProcessed, pVol);
1532	else if (pHdr->Tag.idTag == UDF_TAG_ID_INDIRECT_ENTRY)
1533	{
1534	PUDFINDIRECTENTRY pIndir = (PUDFINDIRECTENTRY)pHdr;
1535	*pcIndirections += 1;
1536	if (pIndir->IndirectIcb.cb != 0)
1537	{
1538	if (idxBlock + 1 == cBlocks)
1539	{
1540	AllocDesc = pIndir->IndirectIcb;
1541	Log2(("ISO/UDF: ICB: Indirect entry - looping: %x:%#010RX32 LB %#x; uType=%d\n",
1542	AllocDesc.Location.uPartitionNo, AllocDesc.Location.off, AllocDesc.cb, AllocDesc.uType));
1543	break;
1544	}
1545	Log2(("ISO/UDF: ICB: Indirect entry - recursing: %x:%#010RX32 LB %#x; uType=%d\n",
1546	pIndir->IndirectIcb.Location.uPartitionNo, pIndir->IndirectIcb.Location.off,
1547	pIndir->IndirectIcb.cb, pIndir->IndirectIcb.uType));
1548	rc = rtFsIsoCore_InitFromUdfIcbRecursive(pCore, pIndir->IndirectIcb, pbBuf, cNestings,
1549	pcProcessed, pcIndirections, pVol);
1550	}
1551	else
1552	Log(("ISO/UDF: zero length indirect entry\n"));
1553	}
1554	else if (pHdr->Tag.idTag == UDF_TAG_ID_TERMINAL_ENTRY)
1555	{
1556	Log2(("ISO/UDF: Terminal ICB entry\n"));
1557	return VINF_SUCCESS;
1558	}
1559	else if (pHdr->Tag.idTag == UDF_TAG_ID_UNALLOCATED_SPACE_ENTRY)
1560	{
1561	Log2(("ISO/UDF: Unallocated space entry: skipping\n"));
1562	/* Ignore since we don't do writing (UDFUNALLOCATEDSPACEENTRY) */
1563	}
1564	else
1565	{
1566	LogRelMax(90, ("ISO/UDF: Unknown ICB type %#x\n", pHdr->Tag.idTag));
1567	return VERR_ISOFS_UNSUPPORTED_ICB;
1568	}
1569	if (RT_FAILURE(rc))
1570	return rc;
1571
1572	/*
1573	* Advance.
1574	*/
1575	if (idxBlock + 1 >= cBlocks)
1576	return VINF_SUCCESS;
1577	}
1578
1579	/* If we get here, we've jumped thru an indirect entry. */
1580	}
1581	/* never reached */
1582	}
1583
1584
1585
1586	/**
1587	* Initialize a core structure from an UDF ICB range and optionally a file ID.
1588	*
1589	* @returns IPRT status code.
1590	* @param pCore The core structure to initialize.
1591	* Caller must've ZEROed this structure!
1592	* @param pAllocDesc The ICB allocation descriptor.
1593	* @param pFid The file ID descriptor. Optional.
1594	* @param offInDir The offset of the file ID descriptor in the
1595	* parent directory. This is used when looking up
1596	* shared directory objects. (Pass 0 for root.)
1597	* @param pVol The instance.
1598	*
1599	* @note Caller must check for UDF_FILE_FLAGS_DELETED before calling if the
1600	* object is supposed to be used for real stuff.
1601	*/
1602	static int rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(PRTFSISOCORE pCore, PCUDFLONGAD pAllocDesc,
1603	PCUDFFILEIDDESC pFid, uintptr_t offInDir, PRTFSISOVOL pVol)
1604	{
1605	Assert(pCore->cRefs == 0);
1606	Assert(pCore->cExtents == 0);
1607	Assert(pCore->paExtents == NULL);
1608	Assert(pCore->pVol == NULL);
1609
1610	/*
1611	* Some size sanity checking.
1612	*/
1613	if (pAllocDesc->cb <= _64K)
1614	{
1615	if (pAllocDesc->cb >= sizeof(UDFICBHDR))
1616	{ /* likely */ }
1617	else
1618	{
1619	Log(("rtFsIsoCore_InitFromUdfIcbAndFileIdDesc: ICB too small: %#04x:%010RX32 LB %#x\n",
1620	pAllocDesc->Location.uPartitionNo, pAllocDesc->Location.off, pAllocDesc->cb));
1621	return VERR_ISOFS_ICB_TOO_SMALL;
1622	}
1623	}
1624	else
1625	{
1626	Log(("rtFsIsoCore_InitFromUdfIcbAndFileIdDesc: ICB too big: %#04x:%010RX32 LB %#x\n",
1627	pAllocDesc->Location.uPartitionNo, pAllocDesc->Location.off, pAllocDesc->cb));
1628	return VERR_ISOFS_ICB_TOO_BIG;
1629	}
1630
1631	/*
1632	* Allocate a temporary buffer, one logical block in size.
1633	*/
1634	uint8_t * const pbBuf = (uint8_t *)RTMemTmpAlloc(pVol->Udf.VolInfo.cbBlock);
1635	if (pbBuf)
1636	{
1637	uint32_t cProcessed = 0;
1638	uint32_t cIndirections = 0;
1639	int rc = rtFsIsoCore_InitFromUdfIcbRecursive(pCore, *pAllocDesc, pbBuf, 0, &cProcessed, &cIndirections, pVol);
1640	RTMemTmpFree(pbBuf);
1641	if (RT_SUCCESS(rc))
1642	{
1643	if (cProcessed > 0)
1644	{
1645	if (pFid)
1646	{
1647	if (pFid->fFlags & UDF_FILE_FLAGS_HIDDEN)
1648	pCore->fAttrib \|= RTFS_DOS_HIDDEN;
1649	if (pFid->fFlags & UDF_FILE_FLAGS_DELETED)
1650	pCore->fAttrib = (pCore->fAttrib & ~RTFS_TYPE_MASK) \| RTFS_TYPE_WHITEOUT;
1651	}
1652
1653	pCore->cRefs = 1;
1654	pCore->pVol = pVol;
1655	pCore->offDirRec = offInDir;
1656	return VINF_SUCCESS;
1657	}
1658	rc = VERR_ISOFS_NO_DIRECT_ICB_ENTRIES;
1659	}
1660
1661	/* White-out fix. Caller must be checking for UDF_FILE_FLAGS_DELETED */
1662	if ( pFid
1663	&& (pFid->fFlags & UDF_FILE_FLAGS_DELETED))
1664	{
1665	pCore->fAttrib = (pCore->fAttrib & ~RTFS_TYPE_MASK) \| RTFS_TYPE_WHITEOUT;
1666	return VINF_SUCCESS;
1667	}
1668	return rc;
1669	}
1670
1671	pCore->pVol = NULL;
1672	return VERR_NO_TMP_MEMORY;
1673	}
1674
1675
1676	/**
1677	* Simple UDF read function.
1678	*
1679	* This deals with extent mappings as well as virtual partition related block
1680	* mapping and such.
1681	*
1682	* @returns VBox status code.
1683	* @param pCore The core object to read data from.
1684	* @param offRead The offset to start reading at.
1685	* @param pvBuf The output buffer.
1686	* @param cbToRead The number of bytes to read.
1687	* @param pcbRead Where to return the number of bytes read.
1688	* @param poffPosMov Where to return the number of bytes to move the read
1689	* position. Optional. (Essentially same as pcbRead
1690	* except without the behavior change.)
1691	*/
1692	static int rtFsIsoCore_ReadWorker(PRTFSISOCORE pCore, uint64_t offRead, void *pvBuf, size_t cbToRead,
1693	size_t pcbRead, size_t poffPosMov)
1694	{
1695	/*
1696	* Check for EOF.
1697	*/
1698	if (offRead >= pCore->cbObject)
1699	{
1700	if (poffPosMov)
1701	*poffPosMov = 0;
1702	if (pcbRead)
1703	{
1704	*pcbRead = 0;
1705	return VINF_EOF;
1706	}
1707	return VERR_EOF;
1708	}
1709	int rcRet = VINF_SUCCESS;
1710	if ( cbToRead > pCore->cbObject
1711	\|\| offRead + cbToRead > pCore->cbObject)
1712	{
1713	if (!pcbRead)
1714	{
1715	if (poffPosMov)
1716	*poffPosMov = 0;
1717	return VERR_EOF;
1718	}
1719	cbToRead = pCore->cbObject - offRead;
1720	rcRet = VINF_EOF;
1721	}
1722
1723	uint64_t cbActual = 0;
1724
1725	/*
1726	* Don't bother looking up the extent if we're not going to
1727	* read anything from it.
1728	*/
1729	if (cbToRead > 0)
1730	{
1731	/*
1732	* Locate the first extent.
1733	*/
1734	uint64_t offExtent = 0;
1735	uint32_t iExtent = 0;
1736	PCRTFSISOEXTENT pCurExtent = &pCore->FirstExtent;
1737	if (offRead < pCurExtent->cbExtent)
1738	{ /* likely */ }
1739	else
1740	do
1741	{
1742	offExtent += pCurExtent->cbExtent;
1743	pCurExtent = &pCore->paExtents[iExtent++];
1744	if (iExtent >= pCore->cExtents)
1745	{
1746	memset(pvBuf, 0, cbToRead);
1747
1748	if (pcbRead)
1749	*pcbRead = cbToRead;
1750	if (poffPosMov)
1751	*poffPosMov = cbToRead;
1752	return rcRet;
1753	}
1754	} while (offExtent < offRead);
1755	Assert(offRead - offExtent < pCurExtent->cbExtent);
1756
1757	/*
1758	* Do the reading part.
1759	*/
1760	PRTFSISOVOL pVol = pCore->pVol;
1761	for (;;)
1762	{
1763	uint64_t offIntoExtent = offRead - offExtent;
1764	size_t cbThisRead = pCurExtent->cbExtent - offIntoExtent;
1765	if (cbThisRead > cbToRead)
1766	cbThisRead = cbToRead;
1767
1768	if (pCurExtent->off == UINT64_MAX)
1769	RT_BZERO(pvBuf, cbThisRead);
1770	else
1771	{
1772	int rc2;
1773	if (pCurExtent->idxPart == UINT32_MAX)
1774	rc2 = RTVfsFileReadAt(pVol->hVfsBacking, pCurExtent->off + offIntoExtent, pvBuf, cbThisRead, NULL);
1775	else
1776	{
1777	Assert(pVol->enmType == RTFSISOVOLTYPE_UDF);
1778	if (pCurExtent->idxPart < pVol->Udf.VolInfo.cPartitions)
1779	{
1780	PRTFSISOVOLUDFPMAP pPart = &pVol->Udf.VolInfo.paPartitions[pCurExtent->idxPart];
1781	switch (pPart->bType)
1782	{
1783	case RTFSISO_UDF_PMAP_T_PLAIN:
1784	rc2 = RTVfsFileReadAt(pVol->hVfsBacking, pPart->offByteLocation + pCurExtent->off + offIntoExtent,
1785	pvBuf, cbThisRead, NULL);
1786	break;
1787
1788	default:
1789	AssertFailed();
1790	rc2 = VERR_ISOFS_IPE_1;
1791	break;
1792	}
1793	}
1794	else
1795	{
1796	Log(("ISO/UDF: Invalid partition index %#x (offset %#RX64), max partitions %#x; iExtent=%#x\n",
1797	pCurExtent->idxPart, pCurExtent->off + offIntoExtent, pVol->Udf.VolInfo.cPartitions, iExtent));
1798	rc2 = VERR_ISOFS_INVALID_PARTITION_INDEX;
1799	}
1800	}
1801	if (RT_FAILURE(rc2))
1802	{
1803	rcRet = rc2;
1804	break;
1805	}
1806	}
1807
1808	/*
1809	* Advance the buffer position and check if we're done (probable).
1810	*/
1811	cbActual += cbThisRead;
1812	cbToRead -= cbThisRead;
1813	if (!cbToRead)
1814	break;
1815	pvBuf = (uint8_t *)pvBuf + cbThisRead;
1816
1817	/*
1818	* Advance to the next extent.
1819	*/
1820	offExtent += pCurExtent->cbExtent;
1821	pCurExtent = &pCore->paExtents[iExtent++];
1822	if (iExtent >= pCore->cExtents)
1823	{
1824	memset(pvBuf, 0, cbToRead);
1825	cbActual += cbToRead;
1826	break;
1827	}
1828	}
1829	}
1830	else
1831	Assert(rcRet == VINF_SUCCESS);
1832
1833	if (poffPosMov)
1834	*poffPosMov = cbActual;
1835	if (pcbRead)
1836	*pcbRead = cbActual;
1837	return rcRet;
1838	}
1839
1840
1841	/**
1842	* Worker for rtFsIsoFile_QueryInfo and rtFsIsoDir_QueryInfo.
1843	*/
1844	static int rtFsIsoCore_QueryInfo(PRTFSISOCORE pCore, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
1845	{
1846	pObjInfo->cbObject = pCore->cbObject;
1847	pObjInfo->cbAllocated = RT_ALIGN_64(pCore->cbObject, pCore->pVol->cbBlock);
1848	pObjInfo->AccessTime = pCore->AccessTime;
1849	pObjInfo->ModificationTime = pCore->ModificationTime;
1850	pObjInfo->ChangeTime = pCore->ChangeTime;
1851	pObjInfo->BirthTime = pCore->BirthTime;
1852	pObjInfo->Attr.fMode = pCore->fAttrib;
1853	pObjInfo->Attr.enmAdditional = enmAddAttr;
1854
1855	switch (enmAddAttr)
1856	{
1857	case RTFSOBJATTRADD_NOTHING: RT_FALL_THRU();
1858	case RTFSOBJATTRADD_UNIX:
1859	pObjInfo->Attr.u.Unix.uid = NIL_RTUID;
1860	pObjInfo->Attr.u.Unix.gid = NIL_RTGID;
1861	pObjInfo->Attr.u.Unix.cHardlinks = 1;
1862	pObjInfo->Attr.u.Unix.INodeIdDevice = 0;
1863	pObjInfo->Attr.u.Unix.INodeId = pCore->idINode;
1864	pObjInfo->Attr.u.Unix.fFlags = 0;
1865	pObjInfo->Attr.u.Unix.GenerationId = pCore->uVersion;
1866	pObjInfo->Attr.u.Unix.Device = 0;
1867	break;
1868	case RTFSOBJATTRADD_UNIX_OWNER:
1869	pObjInfo->Attr.u.UnixOwner.uid = 0;
1870	pObjInfo->Attr.u.UnixOwner.szName[0] = '\0';
1871	break;
1872	case RTFSOBJATTRADD_UNIX_GROUP:
1873	pObjInfo->Attr.u.UnixGroup.gid = 0;
1874	pObjInfo->Attr.u.UnixGroup.szName[0] = '\0';
1875	break;
1876	case RTFSOBJATTRADD_EASIZE:
1877	pObjInfo->Attr.u.EASize.cb = 0;
1878	break;
1879	default:
1880	return VERR_INVALID_PARAMETER;
1881	}
1882	return VINF_SUCCESS;
1883	}
1884
1885
1886	/**
1887	* Worker for rtFsIsoFile_Close and rtFsIsoDir_Close that does common work.
1888	*
1889	* @param pCore The common shared structure.
1890	*/
1891	static void rtFsIsoCore_Destroy(PRTFSISOCORE pCore)
1892	{
1893	if (pCore->pParentDir)
1894	rtFsIsoDirShrd_RemoveOpenChild(pCore->pParentDir, pCore);
1895	if (pCore->paExtents)
1896	{
1897	RTMemFree(pCore->paExtents);
1898	pCore->paExtents = NULL;
1899	}
1900	}
1901
1902
1903	/**
1904	* @interface_method_impl{RTVFSOBJOPS,pfnClose}
1905	*/
1906	static DECLCALLBACK(int) rtFsIsoFile_Close(void *pvThis)
1907	{
1908	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
1909	LogFlow(("rtFsIsoFile_Close(%p/%p)\n", pThis, pThis->pShared));
1910
1911	PRTFSISOFILESHRD pShared = pThis->pShared;
1912	pThis->pShared = NULL;
1913	if (pShared)
1914	{
1915	if (ASMAtomicDecU32(&pShared->Core.cRefs) == 0)
1916	{
1917	LogFlow(("rtFsIsoFile_Close: Destroying shared structure %p\n", pShared));
1918	rtFsIsoCore_Destroy(&pShared->Core);
1919	RTMemFree(pShared);
1920	}
1921	}
1922	return VINF_SUCCESS;
1923	}
1924
1925
1926	/**
1927	* @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
1928	*/
1929	static DECLCALLBACK(int) rtFsIsoFile_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
1930	{
1931	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
1932	return rtFsIsoCore_QueryInfo(&pThis->pShared->Core, pObjInfo, enmAddAttr);
1933	}
1934
1935
1936	/**
1937	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnRead}
1938	*/
1939	static DECLCALLBACK(int) rtFsIsoFile_Read(void pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t pcbRead)
1940	{
1941	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
1942	PRTFSISOFILESHRD pShared = pThis->pShared;
1943	AssertReturn(pSgBuf->cSegs == 1, VERR_INTERNAL_ERROR_3);
1944	RT_NOREF(fBlocking);
1945
1946	#if 1
1947	/* Apply default offset. */
1948	if (off == -1)
1949	off = pThis->offFile;
1950	else
1951	AssertReturn(off >= 0, VERR_INTERNAL_ERROR_3);
1952
1953	/* Do the read. */
1954	size_t offDelta = 0;
1955	int rc = rtFsIsoCore_ReadWorker(&pShared->Core, off, (uint8_t *)pSgBuf->paSegs[0].pvSeg,
1956	pSgBuf->paSegs[0].cbSeg, pcbRead, &offDelta);
1957
1958	/* Update the file position and return. */
1959	pThis->offFile = off + offDelta;
1960	return rc;
1961	#else
1962
1963
1964	/*
1965	* Check for EOF.
1966	*/
1967	if (off == -1)
1968	off = pThis->offFile;
1969	if ((uint64_t)off >= pShared->Core.cbObject)
1970	{
1971	if (pcbRead)
1972	{
1973	*pcbRead = 0;
1974	return VINF_EOF;
1975	}
1976	return VERR_EOF;
1977	}
1978
1979	if (pShared->Core.pVol->enmType == RTFSISOVOLTYPE_UDF)
1980	{
1981	return VERR_ISOFS_UDF_NOT_IMPLEMENTED;
1982	}
1983
1984	/*
1985	* Simple case: File has a single extent.
1986	*/
1987	int rc = VINF_SUCCESS;
1988	size_t cbRead = 0;
1989	uint64_t cbFileLeft = pShared->Core.cbObject - (uint64_t)off;
1990	size_t cbLeft = pSgBuf->paSegs[0].cbSeg;
1991	uint8_t pbDst = (uint8_t )pSgBuf->paSegs[0].pvSeg;
1992	if (pShared->Core.cExtents == 1)
1993	{
1994	if (cbLeft > 0)
1995	{
1996	size_t cbToRead = cbLeft;
1997	if (cbToRead > cbFileLeft)
1998	cbToRead = (size_t)cbFileLeft;
1999	rc = RTVfsFileReadAt(pShared->Core.pVol->hVfsBacking, pShared->Core.FirstExtent.off + off, pbDst, cbToRead, NULL);
2000	if (RT_SUCCESS(rc))
2001	{
2002	off += cbToRead;
2003	pbDst += cbToRead;
2004	cbRead += cbToRead;
2005	cbFileLeft -= cbToRead;
2006	cbLeft -= cbToRead;
2007	}
2008	}
2009	}
2010	/*
2011	* Complicated case: Work the file content extent by extent.
2012	*/
2013	else
2014	{
2015	return VERR_NOT_IMPLEMENTED; /** @todo multi-extent stuff . */
2016	}
2017
2018	/* Update the offset and return. */
2019	pThis->offFile = off;
2020	if (pcbRead)
2021	*pcbRead = cbRead;
2022	return VINF_SUCCESS;
2023	#endif
2024	}
2025
2026
2027	/**
2028	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnWrite}
2029	*/
2030	static DECLCALLBACK(int) rtFsIsoFile_Write(void pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t pcbWritten)
2031	{
2032	RT_NOREF(pvThis, off, pSgBuf, fBlocking, pcbWritten);
2033	return VERR_WRITE_PROTECT;
2034	}
2035
2036
2037	/**
2038	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnFlush}
2039	*/
2040	static DECLCALLBACK(int) rtFsIsoFile_Flush(void *pvThis)
2041	{
2042	RT_NOREF(pvThis);
2043	return VINF_SUCCESS;
2044	}
2045
2046
2047	/**
2048	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnPollOne}
2049	*/
2050	static DECLCALLBACK(int) rtFsIsoFile_PollOne(void *pvThis, uint32_t fEvents, RTMSINTERVAL cMillies, bool fIntr,
2051	uint32_t *pfRetEvents)
2052	{
2053	NOREF(pvThis);
2054	int rc;
2055	if (fEvents != RTPOLL_EVT_ERROR)
2056	{
2057	*pfRetEvents = fEvents & ~RTPOLL_EVT_ERROR;
2058	rc = VINF_SUCCESS;
2059	}
2060	else if (fIntr)
2061	rc = RTThreadSleep(cMillies);
2062	else
2063	{
2064	uint64_t uMsStart = RTTimeMilliTS();
2065	do
2066	rc = RTThreadSleep(cMillies);
2067	while ( rc == VERR_INTERRUPTED
2068	&& !fIntr
2069	&& RTTimeMilliTS() - uMsStart < cMillies);
2070	if (rc == VERR_INTERRUPTED)
2071	rc = VERR_TIMEOUT;
2072	}
2073	return rc;
2074	}
2075
2076
2077	/**
2078	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnTell}
2079	*/
2080	static DECLCALLBACK(int) rtFsIsoFile_Tell(void *pvThis, PRTFOFF poffActual)
2081	{
2082	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
2083	*poffActual = pThis->offFile;
2084	return VINF_SUCCESS;
2085	}
2086
2087
2088	/**
2089	* @interface_method_impl{RTVFSOBJSETOPS,pfnMode}
2090	*/
2091	static DECLCALLBACK(int) rtFsIsoFile_SetMode(void *pvThis, RTFMODE fMode, RTFMODE fMask)
2092	{
2093	RT_NOREF(pvThis, fMode, fMask);
2094	return VERR_WRITE_PROTECT;
2095	}
2096
2097
2098	/**
2099	* @interface_method_impl{RTVFSOBJSETOPS,pfnSetTimes}
2100	*/
2101	static DECLCALLBACK(int) rtFsIsoFile_SetTimes(void *pvThis, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
2102	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
2103	{
2104	RT_NOREF(pvThis, pAccessTime, pModificationTime, pChangeTime, pBirthTime);
2105	return VERR_WRITE_PROTECT;
2106	}
2107
2108
2109	/**
2110	* @interface_method_impl{RTVFSOBJSETOPS,pfnSetOwner}
2111	*/
2112	static DECLCALLBACK(int) rtFsIsoFile_SetOwner(void *pvThis, RTUID uid, RTGID gid)
2113	{
2114	RT_NOREF(pvThis, uid, gid);
2115	return VERR_WRITE_PROTECT;
2116	}
2117
2118
2119	/**
2120	* @interface_method_impl{RTVFSFILEOPS,pfnSeek}
2121	*/
2122	static DECLCALLBACK(int) rtFsIsoFile_Seek(void *pvThis, RTFOFF offSeek, unsigned uMethod, PRTFOFF poffActual)
2123	{
2124	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
2125	RTFOFF offNew;
2126	switch (uMethod)
2127	{
2128	case RTFILE_SEEK_BEGIN:
2129	offNew = offSeek;
2130	break;
2131	case RTFILE_SEEK_END:
2132	offNew = (RTFOFF)pThis->pShared->Core.cbObject + offSeek;
2133	break;
2134	case RTFILE_SEEK_CURRENT:
2135	offNew = (RTFOFF)pThis->offFile + offSeek;
2136	break;
2137	default:
2138	return VERR_INVALID_PARAMETER;
2139	}
2140	if (offNew >= 0)
2141	{
2142	if (offNew <= _4G)
2143	{
2144	pThis->offFile = offNew;
2145	*poffActual = offNew;
2146	return VINF_SUCCESS;
2147	}
2148	return VERR_OUT_OF_RANGE;
2149	}
2150	return VERR_NEGATIVE_SEEK;
2151	}
2152
2153
2154	/**
2155	* @interface_method_impl{RTVFSFILEOPS,pfnQuerySize}
2156	*/
2157	static DECLCALLBACK(int) rtFsIsoFile_QuerySize(void pvThis, uint64_t pcbFile)
2158	{
2159	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
2160	*pcbFile = pThis->pShared->Core.cbObject;
2161	return VINF_SUCCESS;
2162	}
2163
2164
2165	/**
2166	* ISO FS file operations.
2167	*/
2168	DECL_HIDDEN_CONST(const RTVFSFILEOPS) g_rtFsIsoFileOps =
2169	{
2170	{ /* Stream */
2171	{ /* Obj */
2172	RTVFSOBJOPS_VERSION,
2173	RTVFSOBJTYPE_FILE,
2174	"FatFile",
2175	rtFsIsoFile_Close,
2176	rtFsIsoFile_QueryInfo,
2177	RTVFSOBJOPS_VERSION
2178	},
2179	RTVFSIOSTREAMOPS_VERSION,
2180	RTVFSIOSTREAMOPS_FEAT_NO_SG,
2181	rtFsIsoFile_Read,
2182	rtFsIsoFile_Write,
2183	rtFsIsoFile_Flush,
2184	rtFsIsoFile_PollOne,
2185	rtFsIsoFile_Tell,
2186	NULL /pfnSkip/,
2187	NULL /pfnZeroFill/,
2188	RTVFSIOSTREAMOPS_VERSION,
2189	},
2190	RTVFSFILEOPS_VERSION,
2191	0,
2192	{ /* ObjSet */
2193	RTVFSOBJSETOPS_VERSION,
2194	RT_OFFSETOF(RTVFSFILEOPS, Stream.Obj) - RT_OFFSETOF(RTVFSFILEOPS, ObjSet),
2195	rtFsIsoFile_SetMode,
2196	rtFsIsoFile_SetTimes,
2197	rtFsIsoFile_SetOwner,
2198	RTVFSOBJSETOPS_VERSION
2199	},
2200	rtFsIsoFile_Seek,
2201	rtFsIsoFile_QuerySize,
2202	RTVFSFILEOPS_VERSION
2203	};
2204
2205
2206	/**
2207	* Instantiates a new file, from ISO 9660 info.
2208	*
2209	* @returns IPRT status code.
2210	* @param pThis The FAT volume instance.
2211	* @param pParentDir The parent directory (shared part).
2212	* @param pDirRec The directory record.
2213	* @param cDirRecs Number of directory records if more than one.
2214	* @param offDirRec The byte offset of the directory record.
2215	* @param offEntryInDir The byte offset of the directory entry in the parent
2216	* directory.
2217	* @param fOpen RTFILE_O_XXX flags.
2218	* @param uVersion The file version number (since the caller already
2219	* parsed the filename, we don't want to repeat the
2220	* effort here).
2221	* @param phVfsFile Where to return the file handle.
2222	*/
2223	static int rtFsIsoFile_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
2224	uint64_t offDirRec, uint64_t fOpen, uint32_t uVersion, PRTVFSFILE phVfsFile)
2225	{
2226	AssertPtr(pParentDir);
2227
2228	/*
2229	* Create a VFS object.
2230	*/
2231	PRTFSISOFILEOBJ pNewFile;
2232	int rc = RTVfsNewFile(&g_rtFsIsoFileOps, sizeof(pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /use volume lock*/,
2233	phVfsFile, (void **)&pNewFile);
2234	if (RT_SUCCESS(rc))
2235	{
2236	/*
2237	* Look for existing shared object, create a new one if necessary.
2238	*/
2239	PRTFSISOFILESHRD pShared = (PRTFSISOFILESHRD)rtFsIsoDir_LookupShared(pParentDir, offDirRec);
2240	if (pShared)
2241	{
2242	LogFlow(("rtFsIsoFile_New9660: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2243	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2244	pNewFile->offFile = 0;
2245	pNewFile->pShared = pShared;
2246	return VINF_SUCCESS;
2247	}
2248
2249	pShared = (PRTFSISOFILESHRD)RTMemAllocZ(sizeof(*pShared));
2250	if (pShared)
2251	{
2252	rc = rtFsIsoCore_InitFrom9660DirRec(&pShared->Core, pDirRec, cDirRecs, offDirRec, uVersion, pThis);
2253	if (RT_SUCCESS(rc))
2254	{
2255	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
2256	LogFlow(("rtFsIsoFile_New9660: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2257	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2258	pNewFile->offFile = 0;
2259	pNewFile->pShared = pShared;
2260	return VINF_SUCCESS;
2261	}
2262	RTMemFree(pShared);
2263	}
2264	else
2265	rc = VERR_NO_MEMORY;
2266
2267	/* Destroy the file object. */
2268	pNewFile->offFile = 0;
2269	pNewFile->pShared = NULL;
2270	RTVfsFileRelease(*phVfsFile);
2271	}
2272	*phVfsFile = NIL_RTVFSFILE;
2273	return rc;
2274	}
2275
2276
2277	/**
2278	* Instantiates a new file, from UDF info.
2279	*
2280	* @returns IPRT status code.
2281	* @param pThis The FAT volume instance.
2282	* @param pParentDir The parent directory (shared part).
2283	* @param pFid The file ID descriptor. (Points to parent directory
2284	* content.)
2285	* @param fOpen RTFILE_O_XXX flags.
2286	* @param phVfsFile Where to return the file handle.
2287	*/
2288	static int rtFsIsoFile_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid,
2289	uint64_t fOpen, PRTVFSFILE phVfsFile)
2290	{
2291	AssertPtr(pParentDir);
2292	uintptr_t const offInDir = (uintptr_t)pFid - (uintptr_t)pParentDir->pbDir;
2293	Assert(offInDir < pParentDir->cbDir);
2294	Assert(!(pFid->fFlags & UDF_FILE_FLAGS_DELETED));
2295	Assert(!(pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY));
2296
2297	/*
2298	* Create a VFS object.
2299	*/
2300	PRTFSISOFILEOBJ pNewFile;
2301	int rc = RTVfsNewFile(&g_rtFsIsoFileOps, sizeof(pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /use volume lock*/,
2302	phVfsFile, (void **)&pNewFile);
2303	if (RT_SUCCESS(rc))
2304	{
2305	/*
2306	* Look for existing shared object. Make sure it's a file.
2307	*/
2308	PRTFSISOFILESHRD pShared = (PRTFSISOFILESHRD)rtFsIsoDir_LookupShared(pParentDir, offInDir);
2309	if (pShared)
2310	{
2311	if (!RTFS_IS_FILE(pShared->Core.fAttrib))
2312	{
2313	LogFlow(("rtFsIsoFile_NewUdf: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2314	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2315	pNewFile->offFile = 0;
2316	pNewFile->pShared = pShared;
2317	return VINF_SUCCESS;
2318	}
2319	}
2320	/*
2321	* Create a shared object for this alleged file.
2322	*/
2323	else
2324	{
2325	pShared = (PRTFSISOFILESHRD)RTMemAllocZ(sizeof(*pShared));
2326	if (pShared)
2327	{
2328	rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&pShared->Core, &pFid->Icb, pFid, offInDir, pThis);
2329	if (RT_SUCCESS(rc))
2330	{
2331	if (RTFS_IS_FILE(pShared->Core.fAttrib))
2332	{
2333	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
2334
2335	LogFlow(("rtFsIsoFile_NewUdf: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2336	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2337	pNewFile->offFile = 0;
2338	pNewFile->pShared = pShared;
2339	return VINF_SUCCESS;
2340	}
2341	rtFsIsoCore_Destroy(&pShared->Core);
2342	}
2343	RTMemFree(pShared);
2344	}
2345	else
2346	rc = VERR_NO_MEMORY;
2347	}
2348
2349	/* Destroy the file object. */
2350	pNewFile->offFile = 0;
2351	pNewFile->pShared = NULL;
2352	RTVfsFileRelease(*phVfsFile);
2353	}
2354	*phVfsFile = NIL_RTVFSFILE;
2355	return rc;
2356	}
2357
2358
2359	/**
2360	* Looks up the shared structure for a child.
2361	*
2362	* @returns Referenced pointer to the shared structure, NULL if not found.
2363	* @param pThis The directory.
2364	* @param offDirRec The directory record offset of the child.
2365	*/
2366	static PRTFSISOCORE rtFsIsoDir_LookupShared(PRTFSISODIRSHRD pThis, uint64_t offDirRec)
2367	{
2368	PRTFSISOCORE pCur;
2369	RTListForEach(&pThis->OpenChildren, pCur, RTFSISOCORE, Entry)
2370	{
2371	if (pCur->offDirRec == offDirRec)
2372	{
2373	uint32_t cRefs = ASMAtomicIncU32(&pCur->cRefs);
2374	Assert(cRefs > 1); RT_NOREF(cRefs);
2375	return pCur;
2376	}
2377	}
2378	return NULL;
2379	}
2380
2381
2382	#ifdef RT_STRICT
2383	/**
2384	* Checks if @a pNext is an extent of @a pFirst.
2385	*
2386	* @returns true if @a pNext is the next extent, false if not
2387	* @param pFirst The directory record describing the first or the
2388	* previous extent.
2389	* @param pNext The directory record alleged to be the next extent.
2390	*/
2391	DECLINLINE(bool) rtFsIsoDir_Is9660DirRecNextExtent(PCISO9660DIRREC pFirst, PCISO9660DIRREC pNext)
2392	{
2393	if (RT_LIKELY(pNext->bFileIdLength == pFirst->bFileIdLength))
2394	{
2395	if (RT_LIKELY((pNext->fFileFlags \| ISO9660_FILE_FLAGS_MULTI_EXTENT) == pFirst->fFileFlags))
2396	{
2397	if (RT_LIKELY(memcmp(pNext->achFileId, pFirst->achFileId, pNext->bFileIdLength) == 0))
2398	return true;
2399	}
2400	}
2401	return false;
2402	}
2403	#endif /* RT_STRICT */
2404
2405
2406	/**
2407	* Worker for rtFsIsoDir_FindEntry9660 that compares a UTF-16BE name with a
2408	* directory record.
2409	*
2410	* @returns true if equal, false if not.
2411	* @param pDirRec The directory record.
2412	* @param pwszEntry The UTF-16BE string to compare with.
2413	* @param cbEntry The compare string length in bytes (sans zero
2414	* terminator).
2415	* @param cwcEntry The compare string length in RTUTF16 units.
2416	* @param puVersion Where to return any file version number.
2417	*/
2418	DECL_FORCE_INLINE(bool) rtFsIsoDir_IsEntryEqualUtf16Big(PCISO9660DIRREC pDirRec, PCRTUTF16 pwszEntry, size_t cbEntry,
2419	size_t cwcEntry, uint32_t *puVersion)
2420	{
2421	/* ASSUME directories cannot have any version tags. */
2422	if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
2423	{
2424	if (RT_LIKELY(pDirRec->bFileIdLength != cbEntry))
2425	return false;
2426	if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0))
2427	return false;
2428	}
2429	else
2430	{
2431	size_t cbNameDelta = (size_t)pDirRec->bFileIdLength - cbEntry;
2432	if (RT_LIKELY(cbNameDelta > (size_t)12 /* ;12345 */))
2433	return false;
2434	if (cbNameDelta == 0)
2435	{
2436	if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0))
2437	return false;
2438	*puVersion = 1;
2439	}
2440	else
2441	{
2442	if (RT_LIKELY(RT_MAKE_U16(pDirRec->achFileId[cbEntry + 1], pDirRec->achFileId[cbEntry]) != ';'))
2443	return false;
2444	if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0))
2445	return false;
2446	uint32_t uVersion;
2447	size_t cwcVersion = rtFsIso9660GetVersionLengthUtf16Big((PCRTUTF16)pDirRec->achFileId,
2448	pDirRec->bFileIdLength, &uVersion);
2449	if (RT_LIKELY(cwcVersion * sizeof(RTUTF16) == cbNameDelta))
2450	*puVersion = uVersion;
2451	else
2452	return false;
2453	}
2454	}
2455
2456	/* (No need to check for dot and dot-dot here, because cbEntry must be a
2457	multiple of two.) */
2458	Assert(!(cbEntry & 1));
2459	return true;
2460	}
2461
2462
2463	/**
2464	* Worker for rtFsIsoDir_FindEntry9660 that compares an ASCII name with a
2465	* directory record.
2466	*
2467	* @returns true if equal, false if not.
2468	* @param pDirRec The directory record.
2469	* @param pszEntry The uppercased ASCII string to compare with.
2470	* @param cchEntry The length of the compare string.
2471	* @param puVersion Where to return any file version number.
2472	*/
2473	DECL_FORCE_INLINE(bool) rtFsIsoDir_IsEntryEqualAscii(PCISO9660DIRREC pDirRec, const char *pszEntry, size_t cchEntry,
2474	uint32_t *puVersion)
2475	{
2476	/* ASSUME directories cannot have any version tags. */
2477	if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
2478	{
2479	if (RT_LIKELY(pDirRec->bFileIdLength != cchEntry))
2480	return false;
2481	if (RT_LIKELY(memcmp(pDirRec->achFileId, pszEntry, cchEntry) != 0))
2482	return false;
2483	}
2484	else
2485	{
2486	size_t cchNameDelta = (size_t)pDirRec->bFileIdLength - cchEntry;
2487	if (RT_LIKELY(cchNameDelta > (size_t)6 /* ;12345 */))
2488	return false;
2489	if (cchNameDelta == 0)
2490	{
2491	if (RT_LIKELY(memcmp(pDirRec->achFileId, pszEntry, cchEntry) != 0))
2492	return false;
2493	*puVersion = 1;
2494	}
2495	else
2496	{
2497	if (RT_LIKELY(pDirRec->achFileId[cchEntry] != ';'))
2498	return false;
2499	if (RT_LIKELY(memcmp(pDirRec->achFileId, pszEntry, cchEntry) != 0))
2500	return false;
2501	uint32_t uVersion;
2502	size_t cchVersion = rtFsIso9660GetVersionLengthAscii(pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion);
2503	if (RT_LIKELY(cchVersion == cchNameDelta))
2504	*puVersion = uVersion;
2505	else
2506	return false;
2507	}
2508	}
2509
2510	/* Don't match the 'dot' and 'dot-dot' directory records. */
2511	if (RT_LIKELY( pDirRec->bFileIdLength != 1
2512	\|\| (uint8_t)pDirRec->achFileId[0] > (uint8_t)0x01))
2513	return true;
2514	return false;
2515	}
2516
2517
2518	/**
2519	* Locates a directory entry in a directory.
2520	*
2521	* @returns IPRT status code.
2522	* @retval VERR_FILE_NOT_FOUND if not found.
2523	* @param pThis The directory to search.
2524	* @param pszEntry The entry to look for.
2525	* @param poffDirRec Where to return the offset of the directory record
2526	* on the disk.
2527	* @param ppDirRec Where to return the pointer to the directory record
2528	* (the whole directory is buffered).
2529	* @param pcDirRecs Where to return the number of directory records
2530	* related to this entry.
2531	* @param pfMode Where to return the file type, rock ridge adjusted.
2532	* @param puVersion Where to return the file version number.
2533	*/
2534	static int rtFsIsoDir_FindEntry9660(PRTFSISODIRSHRD pThis, const char pszEntry, uint64_t poffDirRec,
2535	PCISO9660DIRREC ppDirRec, uint32_t pcDirRecs, PRTFMODE pfMode, uint32_t *puVersion)
2536	{
2537	Assert(pThis->Core.pVol->enmType != RTFSISOVOLTYPE_UDF);
2538
2539	/* Set return values. */
2540	*poffDirRec = UINT64_MAX;
2541	*ppDirRec = NULL;
2542	*pcDirRecs = 1;
2543	*pfMode = UINT32_MAX;
2544	*puVersion = 0;
2545
2546	/*
2547	* If we're in UTF-16BE mode, convert the input name to UTF-16BE. Otherwise try
2548	* uppercase it into a ISO 9660 compliant name.
2549	*/
2550	int rc;
2551	bool const fIsUtf16 = pThis->Core.pVol->fIsUtf16;
2552	size_t cwcEntry = 0;
2553	size_t cbEntry = 0;
2554	size_t cchUpper = ~(size_t)0;
2555	union
2556	{
2557	RTUTF16 wszEntry[260 + 1];
2558	struct
2559	{
2560	char szUpper[255 + 1];
2561	char szRock[260 + 1];
2562	} s;
2563	} uBuf;
2564	if (fIsUtf16)
2565	{
2566	PRTUTF16 pwszEntry = uBuf.wszEntry;
2567	rc = RTStrToUtf16BigEx(pszEntry, RTSTR_MAX, &pwszEntry, RT_ELEMENTS(uBuf.wszEntry), &cwcEntry);
2568	if (RT_FAILURE(rc))
2569	return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc;
2570	cbEntry = cwcEntry * 2;
2571	}
2572	else
2573	{
2574	rc = RTStrCopy(uBuf.s.szUpper, sizeof(uBuf.s.szUpper), pszEntry);
2575	if (RT_FAILURE(rc))
2576	return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc;
2577	RTStrToUpper(uBuf.s.szUpper);
2578	cchUpper = strlen(uBuf.s.szUpper);
2579	}
2580
2581	/*
2582	* Scan the directory buffer by buffer.
2583	*/
2584	uint32_t offEntryInDir = 0;
2585	uint32_t const cbDir = pThis->Core.cbObject;
2586	while (offEntryInDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= cbDir)
2587	{
2588	PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir];
2589
2590	/* If null length, skip to the next sector. */
2591	if (pDirRec->cbDirRec == 0)
2592	offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U);
2593	else
2594	{
2595	/* Try match the filename. */
2596	if (fIsUtf16)
2597	{
2598	if (RT_LIKELY(!rtFsIsoDir_IsEntryEqualUtf16Big(pDirRec, uBuf.wszEntry, cbEntry, cwcEntry, puVersion)))
2599	{
2600	/* Advance */
2601	offEntryInDir += pDirRec->cbDirRec;
2602	continue;
2603	}
2604	}
2605	else
2606	{
2607	if (RT_LIKELY(!rtFsIsoDir_IsEntryEqualAscii(pDirRec, uBuf.s.szUpper, cchUpper, puVersion)))
2608	{
2609	/** @todo check rock. */
2610	if (1)
2611	{
2612	/* Advance */
2613	offEntryInDir += pDirRec->cbDirRec;
2614	continue;
2615	}
2616	}
2617	}
2618
2619	*poffDirRec = pThis->Core.FirstExtent.off + offEntryInDir;
2620	*ppDirRec = pDirRec;
2621	*pfMode = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY
2622	? 0755 \| RTFS_TYPE_DIRECTORY \| RTFS_DOS_DIRECTORY
2623	: 0644 \| RTFS_TYPE_FILE;
2624
2625	/*
2626	* Deal with the unlikely scenario of multi extent records.
2627	*/
2628	if (!(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
2629	*pcDirRecs = 1;
2630	else
2631	{
2632	offEntryInDir += pDirRec->cbDirRec;
2633
2634	uint32_t cDirRecs = 1;
2635	while (offEntryInDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= cbDir)
2636	{
2637	PCISO9660DIRREC pDirRec2 = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir];
2638	if (pDirRec2->cbDirRec != 0)
2639	{
2640	Assert(rtFsIsoDir_Is9660DirRecNextExtent(pDirRec, pDirRec2));
2641	cDirRecs++;
2642	if (!(pDirRec2->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
2643	break;
2644	offEntryInDir += pDirRec2->cbDirRec;
2645	}
2646	else
2647	offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U);
2648	}
2649
2650	*pcDirRecs = cDirRecs;
2651	}
2652	return VINF_SUCCESS;
2653	}
2654	}
2655
2656	return VERR_FILE_NOT_FOUND;
2657	}
2658
2659
2660	/**
2661	* Locates a directory entry in a directory.
2662	*
2663	* @returns IPRT status code.
2664	* @retval VERR_FILE_NOT_FOUND if not found.
2665	* @param pThis The directory to search.
2666	* @param pszEntry The entry to look for.
2667	* @param ppFid Where to return the pointer to the file ID entry.
2668	* (Points to the directory content.)
2669	*/
2670	static int rtFsIsoDir_FindEntryUdf(PRTFSISODIRSHRD pThis, const char pszEntry, PCUDFFILEIDDESC ppFid)
2671	{
2672	Assert(pThis->Core.pVol->enmType == RTFSISOVOLTYPE_UDF);
2673	*ppFid = NULL;
2674
2675	/*
2676	* Recode the entry name as 8-bit (if possible) and 16-bit strings.
2677	* This also disposes of entries that definitely are too long.
2678	*/
2679	size_t cb8Bit;
2680	bool fSimple;
2681	size_t cb16Bit;
2682	size_t cwc16Bit;
2683	uint8_t ab8Bit[255];
2684	RTUTF16 wsz16Bit[255];
2685
2686	/* 16-bit */
2687	PRTUTF16 pwsz16Bit = wsz16Bit;
2688	int rc = RTStrToUtf16BigEx(pszEntry, RTSTR_MAX, &pwsz16Bit, RT_ELEMENTS(wsz16Bit), &cwc16Bit);
2689	if (RT_SUCCESS(rc))
2690	cb16Bit = 1 + cwc16Bit * sizeof(RTUTF16);
2691	else
2692	return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc;
2693
2694	/* 8-bit (can't possibly overflow) */
2695	fSimple = true;
2696	cb8Bit = 0;
2697	const char *pszSrc = pszEntry;
2698	for (;;)
2699	{
2700	RTUNICP uc;
2701	int rc2 = RTStrGetCpEx(&pszSrc, &uc);
2702	AssertRCReturn(rc2, rc2);
2703	if (uc <= 0x7f)
2704	{
2705	if (uc)
2706	ab8Bit[cb8Bit++] = (uint8_t)uc;
2707	else
2708	break;
2709	}
2710	else if (uc <= 0xff)
2711	{
2712	ab8Bit[cb8Bit++] = (uint8_t)uc;
2713	fSimple = false;
2714	}
2715	else
2716	{
2717	cb8Bit = UINT32_MAX / 2;
2718	break;
2719	}
2720	}
2721	Assert(cb8Bit <= sizeof(ab8Bit) \|\| cb8Bit == UINT32_MAX / 2);
2722	cb8Bit++;
2723
2724	/*
2725	* Scan the directory content.
2726	*/
2727	uint32_t offDesc = 0;
2728	uint32_t const cbDir = pThis->Core.cbObject;
2729	while (offDesc + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) <= cbDir)
2730	{
2731	PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pThis->pbDir[offDesc];
2732	uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid);
2733	if ( offDesc + cbFid <= cbDir
2734	&& pFid->Tag.idTag == UDF_TAG_ID_FILE_ID_DESC)
2735	{ /* likely */ }
2736	else
2737	break;
2738
2739	uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid);
2740	if (*pbName == 16)
2741	{
2742	if (cb16Bit == pFid->cbName)
2743	{
2744	if (RTUtf16BigNICmp((PCRTUTF16)(&pbName[1]), wsz16Bit, cwc16Bit) == 0)
2745	{
2746	*ppFid = pFid;
2747	return VINF_SUCCESS;
2748	}
2749	}
2750	}
2751	else if (*pbName == 8)
2752	{
2753	if ( cb8Bit == pFid->cbName
2754	&& cb8Bit != UINT16_MAX)
2755	{
2756	if (fSimple)
2757	{
2758	if (RTStrNICmp((const char )&pbName[1], (const char )ab8Bit, cb8Bit - 1) == 0)
2759	{
2760	*ppFid = pFid;
2761	return VINF_SUCCESS;
2762	}
2763	}
2764	else
2765	{
2766	size_t cch = cb8Bit - 1;
2767	size_t off;
2768	for (off = 0; off < cch; off++)
2769	{
2770	RTUNICP uc1 = ab8Bit[off];
2771	RTUNICP uc2 = pbName[off + 1];
2772	if ( uc1 == uc2
2773	\|\| RTUniCpToLower(uc1) == RTUniCpToLower(uc2)
2774	\|\| RTUniCpToUpper(uc1) == RTUniCpToUpper(uc2))
2775	{ /* matches */ }
2776	else
2777	break;
2778	}
2779	if (off == cch)
2780	{
2781	*ppFid = pFid;
2782	return VINF_SUCCESS;
2783	}
2784	}
2785	}
2786	}
2787
2788	/* advance */
2789	offDesc += cbFid;
2790	}
2791
2792	return VERR_FILE_NOT_FOUND;
2793	}
2794
2795
2796	/**
2797	* Releases a reference to a shared directory structure.
2798	*
2799	* @param pShared The shared directory structure.
2800	*/
2801	static void rtFsIsoDirShrd_Release(PRTFSISODIRSHRD pShared)
2802	{
2803	uint32_t cRefs = ASMAtomicDecU32(&pShared->Core.cRefs);
2804	Assert(cRefs < UINT32_MAX / 2);
2805	if (cRefs == 0)
2806	{
2807	LogFlow(("rtFsIsoDirShrd_Release: Destroying shared structure %p\n", pShared));
2808	Assert(pShared->Core.cRefs == 0);
2809	if (pShared->pbDir)
2810	{
2811	RTMemFree(pShared->pbDir);
2812	pShared->pbDir = NULL;
2813	}
2814	rtFsIsoCore_Destroy(&pShared->Core);
2815	RTMemFree(pShared);
2816	}
2817	}
2818
2819
2820	/**
2821	* Retains a reference to a shared directory structure.
2822	*
2823	* @param pShared The shared directory structure.
2824	*/
2825	static void rtFsIsoDirShrd_Retain(PRTFSISODIRSHRD pShared)
2826	{
2827	uint32_t cRefs = ASMAtomicIncU32(&pShared->Core.cRefs);
2828	Assert(cRefs > 1); NOREF(cRefs);
2829	}
2830
2831
2832
2833	/**
2834	* @interface_method_impl{RTVFSOBJOPS,pfnClose}
2835	*/
2836	static DECLCALLBACK(int) rtFsIsoDir_Close(void *pvThis)
2837	{
2838	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2839	LogFlow(("rtFsIsoDir_Close(%p/%p)\n", pThis, pThis->pShared));
2840
2841	PRTFSISODIRSHRD pShared = pThis->pShared;
2842	pThis->pShared = NULL;
2843	if (pShared)
2844	rtFsIsoDirShrd_Release(pShared);
2845	return VINF_SUCCESS;
2846	}
2847
2848
2849	/**
2850	* @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
2851	*/
2852	static DECLCALLBACK(int) rtFsIsoDir_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
2853	{
2854	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2855	return rtFsIsoCore_QueryInfo(&pThis->pShared->Core, pObjInfo, enmAddAttr);
2856	}
2857
2858
2859	/**
2860	* @interface_method_impl{RTVFSOBJSETOPS,pfnMode}
2861	*/
2862	static DECLCALLBACK(int) rtFsIsoDir_SetMode(void *pvThis, RTFMODE fMode, RTFMODE fMask)
2863	{
2864	RT_NOREF(pvThis, fMode, fMask);
2865	return VERR_WRITE_PROTECT;
2866	}
2867
2868
2869	/**
2870	* @interface_method_impl{RTVFSOBJSETOPS,pfnSetTimes}
2871	*/
2872	static DECLCALLBACK(int) rtFsIsoDir_SetTimes(void *pvThis, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
2873	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
2874	{
2875	RT_NOREF(pvThis, pAccessTime, pModificationTime, pChangeTime, pBirthTime);
2876	return VERR_WRITE_PROTECT;
2877	}
2878
2879
2880	/**
2881	* @interface_method_impl{RTVFSOBJSETOPS,pfnSetOwner}
2882	*/
2883	static DECLCALLBACK(int) rtFsIsoDir_SetOwner(void *pvThis, RTUID uid, RTGID gid)
2884	{
2885	RT_NOREF(pvThis, uid, gid);
2886	return VERR_WRITE_PROTECT;
2887	}
2888
2889
2890	/**
2891	* @interface_method_impl{RTVFSOBJOPS,pfnTraversalOpen}
2892	*/
2893	static DECLCALLBACK(int) rtFsIsoDir_TraversalOpen(void pvThis, const char pszEntry, PRTVFSDIR phVfsDir,
2894	PRTVFSSYMLINK phVfsSymlink, PRTVFS phVfsMounted)
2895	{
2896	/*
2897	* We may have symbolic links if rock ridge is being used, though currently
2898	* we won't have nested mounts.
2899	*/
2900	int rc;
2901	if (phVfsMounted)
2902	*phVfsMounted = NIL_RTVFS;
2903	if (phVfsDir \|\| phVfsSymlink)
2904	{
2905	if (phVfsSymlink)
2906	*phVfsSymlink = NIL_RTVFSSYMLINK;
2907	if (phVfsDir)
2908	*phVfsDir = NIL_RTVFSDIR;
2909
2910	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2911	PRTFSISODIRSHRD pShared = pThis->pShared;
2912	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
2913	{
2914	/*
2915	* ISO 9660
2916	*/
2917	PCISO9660DIRREC pDirRec;
2918	uint64_t offDirRec;
2919	uint32_t cDirRecs;
2920	RTFMODE fMode;
2921	uint32_t uVersion;
2922	rc = rtFsIsoDir_FindEntry9660(pShared, pszEntry, &offDirRec, &pDirRec, &cDirRecs, &fMode, &uVersion);
2923	Log2(("rtFsIsoDir_TraversalOpen: FindEntry9660(,%s,) -> %Rrc\n", pszEntry, rc));
2924	if (RT_SUCCESS(rc))
2925	{
2926	switch (fMode & RTFS_TYPE_MASK)
2927	{
2928	case RTFS_TYPE_DIRECTORY:
2929	if (phVfsDir)
2930	rc = rtFsIsoDir_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs, offDirRec, phVfsDir);
2931	else
2932	rc = VERR_NOT_SYMLINK;
2933	break;
2934
2935	case RTFS_TYPE_SYMLINK:
2936	rc = VERR_NOT_IMPLEMENTED;
2937	break;
2938	case RTFS_TYPE_FILE:
2939	case RTFS_TYPE_DEV_BLOCK:
2940	case RTFS_TYPE_DEV_CHAR:
2941	case RTFS_TYPE_FIFO:
2942	case RTFS_TYPE_SOCKET:
2943	rc = VERR_NOT_A_DIRECTORY;
2944	break;
2945	default:
2946	case RTFS_TYPE_WHITEOUT:
2947	rc = VERR_PATH_NOT_FOUND;
2948	break;
2949	}
2950	}
2951	else if (rc == VERR_FILE_NOT_FOUND)
2952	rc = VERR_PATH_NOT_FOUND;
2953	}
2954	else
2955	{
2956	/*
2957	* UDF
2958	*/
2959	PCUDFFILEIDDESC pFid;
2960	rc = rtFsIsoDir_FindEntryUdf(pShared, pszEntry, &pFid);
2961	Log2(("rtFsIsoDir_TraversalOpen: FindEntryUdf(,%s,) -> %Rrc\n", pszEntry, rc));
2962	if (RT_SUCCESS(rc))
2963	{
2964	if (!(pFid->fFlags & UDF_FILE_FLAGS_DELETED))
2965	{
2966	if (pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY)
2967	{
2968	if (phVfsDir)
2969	rc = rtFsIsoDir_NewUdf(pShared->Core.pVol, pShared, pFid, phVfsDir);
2970	else
2971	rc = VERR_NOT_SYMLINK;
2972	}
2973	else if (phVfsSymlink)
2974	{
2975	/** @todo symlink support */
2976	rc = VERR_NOT_A_DIRECTORY;
2977	}
2978	else
2979	rc = VERR_NOT_A_DIRECTORY;
2980	}
2981	/* We treat UDF_FILE_FLAGS_DELETED like RTFS_TYPE_WHITEOUT for now. */
2982	else
2983	rc = VERR_PATH_NOT_FOUND;
2984	}
2985	}
2986	}
2987	else
2988	rc = VERR_PATH_NOT_FOUND;
2989	return rc;
2990	}
2991
2992
2993	/**
2994	* @interface_method_impl{RTVFSDIROPS,pfnOpenFile}
2995	*/
2996	static DECLCALLBACK(int) rtFsIsoDir_OpenFile(void pvThis, const char pszFilename, uint32_t fOpen, PRTVFSFILE phVfsFile)
2997	{
2998	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2999	PRTFSISODIRSHRD pShared = pThis->pShared;
3000
3001	/*
3002	* We cannot create or replace anything, just open stuff.
3003	*/
3004	if ( (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_CREATE
3005	\|\| (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_CREATE_REPLACE)
3006	return VERR_WRITE_PROTECT;
3007
3008	/*
3009	* Try open file.
3010	*/
3011	int rc;
3012	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
3013	{
3014	/*
3015	* ISO 9660
3016	*/
3017	PCISO9660DIRREC pDirRec;
3018	uint64_t offDirRec;
3019	uint32_t cDirRecs;
3020	RTFMODE fMode;
3021	uint32_t uVersion;
3022	rc = rtFsIsoDir_FindEntry9660(pShared, pszFilename, &offDirRec, &pDirRec, &cDirRecs, &fMode, &uVersion);
3023	Log2(("rtFsIsoDir_OpenFile: FindEntry9660(,%s,) -> %Rrc\n", pszFilename, rc));
3024	if (RT_SUCCESS(rc))
3025	{
3026	switch (fMode & RTFS_TYPE_MASK)
3027	{
3028	case RTFS_TYPE_FILE:
3029	rc = rtFsIsoFile_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs, offDirRec, fOpen, uVersion, phVfsFile);
3030	break;
3031
3032	case RTFS_TYPE_SYMLINK:
3033	case RTFS_TYPE_DEV_BLOCK:
3034	case RTFS_TYPE_DEV_CHAR:
3035	case RTFS_TYPE_FIFO:
3036	case RTFS_TYPE_SOCKET:
3037	case RTFS_TYPE_WHITEOUT:
3038	rc = VERR_NOT_IMPLEMENTED;
3039	break;
3040
3041	case RTFS_TYPE_DIRECTORY:
3042	rc = VERR_NOT_A_FILE;
3043	break;
3044
3045	default:
3046	rc = VERR_PATH_NOT_FOUND;
3047	break;
3048	}
3049	}
3050	}
3051	else
3052	{
3053	/*
3054	* UDF
3055	*/
3056	PCUDFFILEIDDESC pFid;
3057	rc = rtFsIsoDir_FindEntryUdf(pShared, pszFilename, &pFid);
3058	Log2(("rtFsIsoDir_OpenFile: FindEntryUdf(,%s,) -> %Rrc\n", pszFilename, rc));
3059	if (RT_SUCCESS(rc))
3060	{
3061	if (!(pFid->fFlags & UDF_FILE_FLAGS_DELETED))
3062	{
3063	if (!(pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY))
3064	rc = rtFsIsoFile_NewUdf(pShared->Core.pVol, pShared, pFid, fOpen, phVfsFile);
3065	else
3066	rc = VERR_NOT_A_FILE;
3067	}
3068	/* We treat UDF_FILE_FLAGS_DELETED like RTFS_TYPE_WHITEOUT for now. */
3069	else
3070	rc = VERR_PATH_NOT_FOUND;
3071	}
3072	}
3073	return rc;
3074	}
3075
3076
3077	/**
3078	* @interface_method_impl{RTVFSDIROPS,pfnOpenDir}
3079	*/
3080	static DECLCALLBACK(int) rtFsIsoDir_OpenDir(void pvThis, const char pszSubDir, uint32_t fFlags, PRTVFSDIR phVfsDir)
3081	{
3082	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
3083	PRTFSISODIRSHRD pShared = pThis->pShared;
3084	AssertReturn(!fFlags, VERR_INVALID_FLAGS);
3085
3086	/*
3087	* Try open file.
3088	*/
3089	int rc;
3090	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
3091	{
3092	/*
3093	* ISO 9660
3094	*/
3095	PCISO9660DIRREC pDirRec;
3096	uint64_t offDirRec;
3097	uint32_t cDirRecs;
3098	RTFMODE fMode;
3099	uint32_t uVersion;
3100	rc = rtFsIsoDir_FindEntry9660(pShared, pszSubDir, &offDirRec, &pDirRec, &cDirRecs, &fMode, &uVersion);
3101	Log2(("rtFsIsoDir_OpenDir: FindEntry9660(,%s,) -> %Rrc\n", pszSubDir, rc));
3102	if (RT_SUCCESS(rc))
3103	{
3104	switch (fMode & RTFS_TYPE_MASK)
3105	{
3106	case RTFS_TYPE_DIRECTORY:
3107	rc = rtFsIsoDir_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs, offDirRec, phVfsDir);
3108	break;
3109
3110	case RTFS_TYPE_FILE:
3111	case RTFS_TYPE_SYMLINK:
3112	case RTFS_TYPE_DEV_BLOCK:
3113	case RTFS_TYPE_DEV_CHAR:
3114	case RTFS_TYPE_FIFO:
3115	case RTFS_TYPE_SOCKET:
3116	case RTFS_TYPE_WHITEOUT:
3117	rc = VERR_NOT_A_DIRECTORY;
3118	break;
3119
3120	default:
3121	rc = VERR_PATH_NOT_FOUND;
3122	break;
3123	}
3124	}
3125	}
3126	else
3127	{
3128	/*
3129	* UDF
3130	*/
3131	PCUDFFILEIDDESC pFid;
3132	rc = rtFsIsoDir_FindEntryUdf(pShared, pszSubDir, &pFid);
3133	Log2(("rtFsIsoDir_OpenDir: FindEntryUdf(,%s,) -> %Rrc\n", pszSubDir, rc));
3134	if (RT_SUCCESS(rc))
3135	{
3136	if (!(pFid->fFlags & UDF_FILE_FLAGS_DELETED))
3137	{
3138	if (pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY)
3139	rc = rtFsIsoDir_NewUdf(pShared->Core.pVol, pShared, pFid, phVfsDir);
3140	else
3141	rc = VERR_NOT_A_DIRECTORY;
3142	}
3143	/* We treat UDF_FILE_FLAGS_DELETED like RTFS_TYPE_WHITEOUT for now. */
3144	else
3145	rc = VERR_PATH_NOT_FOUND;
3146	}
3147	}
3148	return rc;
3149	}
3150
3151
3152	/**
3153	* @interface_method_impl{RTVFSDIROPS,pfnCreateDir}
3154	*/
3155	static DECLCALLBACK(int) rtFsIsoDir_CreateDir(void pvThis, const char pszSubDir, RTFMODE fMode, PRTVFSDIR phVfsDir)
3156	{
3157	RT_NOREF(pvThis, pszSubDir, fMode, phVfsDir);
3158	return VERR_WRITE_PROTECT;
3159	}
3160
3161
3162	/**
3163	* @interface_method_impl{RTVFSDIROPS,pfnOpenSymlink}
3164	*/
3165	static DECLCALLBACK(int) rtFsIsoDir_OpenSymlink(void pvThis, const char pszSymlink, PRTVFSSYMLINK phVfsSymlink)
3166	{
3167	RT_NOREF(pvThis, pszSymlink, phVfsSymlink);
3168	return VERR_NOT_SUPPORTED;
3169	}
3170
3171
3172	/**
3173	* @interface_method_impl{RTVFSDIROPS,pfnCreateSymlink}
3174	*/
3175	static DECLCALLBACK(int) rtFsIsoDir_CreateSymlink(void pvThis, const char pszSymlink, const char *pszTarget,
3176	RTSYMLINKTYPE enmType, PRTVFSSYMLINK phVfsSymlink)
3177	{
3178	RT_NOREF(pvThis, pszSymlink, pszTarget, enmType, phVfsSymlink);
3179	return VERR_WRITE_PROTECT;
3180	}
3181
3182
3183	/**
3184	* @interface_method_impl{RTVFSDIROPS,pfnQueryEntryInfo}
3185	*/
3186	static DECLCALLBACK(int) rtFsIsoDir_QueryEntryInfo(void pvThis, const char pszEntry,
3187	PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
3188	{
3189	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
3190	PRTFSISODIRSHRD pShared = pThis->pShared;
3191	RTFSISOCORE TmpObj;
3192	int rc;
3193	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
3194	{
3195	/*
3196	* Try locate the entry.
3197	*/
3198	PCISO9660DIRREC pDirRec;
3199	uint64_t offDirRec;
3200	uint32_t cDirRecs;
3201	RTFMODE fMode;
3202	uint32_t uVersion;
3203	rc = rtFsIsoDir_FindEntry9660(pShared, pszEntry, &offDirRec, &pDirRec, &cDirRecs, &fMode, &uVersion);
3204	Log2(("rtFsIsoDir_QueryEntryInfo: FindEntry9660(,%s,) -> %Rrc\n", pszEntry, rc));
3205	if (RT_SUCCESS(rc))
3206	{
3207	/*
3208	* To avoid duplicating code in rtFsIsoCore_InitFrom9660DirRec and
3209	* rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack.
3210	*/
3211	RT_ZERO(TmpObj);
3212	rc = rtFsIsoCore_InitFrom9660DirRec(&TmpObj, pDirRec, cDirRecs, offDirRec, uVersion, pShared->Core.pVol);
3213	if (RT_SUCCESS(rc))
3214	{
3215	rc = rtFsIsoCore_QueryInfo(&TmpObj, pObjInfo, enmAddAttr);
3216	rtFsIsoCore_Destroy(&TmpObj);
3217	}
3218	}
3219	}
3220	else
3221	{
3222	/*
3223	* Try locate the entry.
3224	*/
3225	PCUDFFILEIDDESC pFid;
3226	rc = rtFsIsoDir_FindEntryUdf(pShared, pszEntry, &pFid);
3227	Log2(("rtFsIsoDir_QueryEntryInfo: FindEntryUdf(,%s,) -> %Rrc\n", pszEntry, rc));
3228	if (RT_SUCCESS(rc))
3229	{
3230	/*
3231	* To avoid duplicating code in rtFsIsoCore_InitFromUdfIcbAndFileIdDesc and
3232	* rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack.
3233	*/
3234	RT_ZERO(TmpObj);
3235	uintptr_t offInDir = (uintptr_t)pFid - (uintptr_t)pShared->pbDir;
3236	rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&TmpObj, &pFid->Icb, pFid, offInDir, pShared->Core.pVol);
3237	if (RT_SUCCESS(rc))
3238	{
3239	rc = rtFsIsoCore_QueryInfo(&TmpObj, pObjInfo, enmAddAttr);
3240	rtFsIsoCore_Destroy(&TmpObj);
3241	}
3242	}
3243	}
3244	return rc;
3245	}
3246
3247
3248	/**
3249	* @interface_method_impl{RTVFSDIROPS,pfnUnlinkEntry}
3250	*/
3251	static DECLCALLBACK(int) rtFsIsoDir_UnlinkEntry(void pvThis, const char pszEntry, RTFMODE fType)
3252	{
3253	RT_NOREF(pvThis, pszEntry, fType);
3254	return VERR_WRITE_PROTECT;
3255	}
3256
3257
3258	/**
3259	* @interface_method_impl{RTVFSDIROPS,pfnRenameEntry}
3260	*/
3261	static DECLCALLBACK(int) rtFsIsoDir_RenameEntry(void pvThis, const char pszEntry, RTFMODE fType, const char *pszNewName)
3262	{
3263	RT_NOREF(pvThis, pszEntry, fType, pszNewName);
3264	return VERR_WRITE_PROTECT;
3265	}
3266
3267
3268	/**
3269	* @interface_method_impl{RTVFSDIROPS,pfnRewindDir}
3270	*/
3271	static DECLCALLBACK(int) rtFsIsoDir_RewindDir(void *pvThis)
3272	{
3273	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
3274	pThis->offDir = 0;
3275	return VINF_SUCCESS;
3276	}
3277
3278
3279	/**
3280	* The ISO 9660 worker for rtFsIsoDir_ReadDir
3281	*/
3282	static int rtFsIsoDir_ReadDir9660(PRTFSISODIROBJ pThis, PRTFSISODIRSHRD pShared, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry,
3283	RTFSOBJATTRADD enmAddAttr)
3284	{
3285	while (pThis->offDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= pShared->cbDir)
3286	{
3287	PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pShared->pbDir[pThis->offDir];
3288
3289	/* If null length, skip to the next sector. */
3290	if (pDirRec->cbDirRec == 0)
3291	pThis->offDir = (pThis->offDir + pShared->Core.pVol->cbSector) & ~(pShared->Core.pVol->cbSector - 1U);
3292	else
3293	{
3294	/*
3295	* Do names first as they may cause overflows.
3296	*/
3297	uint32_t uVersion = 0;
3298	if ( pDirRec->bFileIdLength == 1
3299	&& pDirRec->achFileId[0] == '\0')
3300	{
3301	if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2)
3302	{
3303	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2;
3304	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW (dot)\n"));
3305	return VERR_BUFFER_OVERFLOW;
3306	}
3307	pDirEntry->cbName = 1;
3308	pDirEntry->szName[0] = '.';
3309	pDirEntry->szName[1] = '\0';
3310	}
3311	else if ( pDirRec->bFileIdLength == 1
3312	&& pDirRec->achFileId[0] == '\1')
3313	{
3314	if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 3)
3315	{
3316	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 3;
3317	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW (dot-dot)\n"));
3318	return VERR_BUFFER_OVERFLOW;
3319	}
3320	pDirEntry->cbName = 2;
3321	pDirEntry->szName[0] = '.';
3322	pDirEntry->szName[1] = '.';
3323	pDirEntry->szName[2] = '\0';
3324	}
3325	else if (pShared->Core.pVol->fIsUtf16)
3326	{
3327	PCRTUTF16 pawcSrc = (PCRTUTF16)&pDirRec->achFileId[0];
3328	size_t cwcSrc = pDirRec->bFileIdLength / sizeof(RTUTF16);
3329	size_t cwcVer = !(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
3330	? rtFsIso9660GetVersionLengthUtf16Big(pawcSrc, cwcSrc, &uVersion) : 0;
3331	size_t cchNeeded = 0;
3332	size_t cbDst = *pcbDirEntry - RT_UOFFSETOF(RTDIRENTRYEX, szName);
3333	char *pszDst = pDirEntry->szName;
3334
3335	int rc = RTUtf16BigToUtf8Ex(pawcSrc, cwcSrc - cwcVer, &pszDst, cbDst, &cchNeeded);
3336	if (RT_SUCCESS(rc))
3337	pDirEntry->cbName = (uint16_t)cchNeeded;
3338	else if (rc == VERR_BUFFER_OVERFLOW)
3339	{
3340	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchNeeded + 1;
3341	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cchNeeded=%zu (UTF-16BE)\n", cbDst, cchNeeded));
3342	return VERR_BUFFER_OVERFLOW;
3343	}
3344	else
3345	{
3346	ssize_t cchNeeded2 = RTStrPrintf2(pszDst, cbDst, "bad-name-%#x", pThis->offDir);
3347	if (cchNeeded2 >= 0)
3348	pDirEntry->cbName = (uint16_t)cchNeeded2;
3349	else
3350	{
3351	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + (size_t)-cchNeeded2;
3352	return VERR_BUFFER_OVERFLOW;
3353	}
3354	}
3355	}
3356	else
3357	{
3358	/* This is supposed to be upper case ASCII, however, purge the encoding anyway. */
3359	size_t cchVer = !(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
3360	? rtFsIso9660GetVersionLengthAscii(pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion) : 0;
3361	size_t cchName = pDirRec->bFileIdLength - cchVer;
3362	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchName + 1;
3363	if (*pcbDirEntry < cbNeeded)
3364	{
3365	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (ASCII)\n", *pcbDirEntry, cbNeeded));
3366	*pcbDirEntry = cbNeeded;
3367	return VERR_BUFFER_OVERFLOW;
3368	}
3369	pDirEntry->cbName = (uint16_t)cchName;
3370	memcpy(pDirEntry->szName, pDirRec->achFileId, cchName);
3371	pDirEntry->szName[cchName] = '\0';
3372	RTStrPurgeEncoding(pDirEntry->szName);
3373
3374	/** @todo check for rock ridge names here. */
3375	}
3376	pDirEntry->cwcShortName = 0;
3377	pDirEntry->wszShortName[0] = '\0';
3378
3379	/*
3380	* To avoid duplicating code in rtFsIsoCore_InitFrom9660DirRec and
3381	* rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack.
3382	*/
3383	RTFSISOCORE TmpObj;
3384	RT_ZERO(TmpObj);
3385	rtFsIsoCore_InitFrom9660DirRec(&TmpObj, pDirRec, 1 /* cDirRecs - see below why 1 */,
3386	pThis->offDir + pShared->Core.FirstExtent.off, uVersion, pShared->Core.pVol);
3387	int rc = rtFsIsoCore_QueryInfo(&TmpObj, &pDirEntry->Info, enmAddAttr);
3388
3389	/*
3390	* Update the directory location and handle multi extent records.
3391	*
3392	* Multi extent records only affect the file size and the directory location,
3393	* so we deal with it here instead of involving * rtFsIsoCore_InitFrom9660DirRec
3394	* which would potentially require freeing memory and such.
3395	*/
3396	if (!(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
3397	{
3398	Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc));
3399	pThis->offDir += pDirRec->cbDirRec;
3400	}
3401	else
3402	{
3403	uint32_t cExtents = 1;
3404	uint32_t offDir = pThis->offDir + pDirRec->cbDirRec;
3405	while (offDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= pShared->cbDir)
3406	{
3407	PCISO9660DIRREC pDirRec2 = (PCISO9660DIRREC)&pShared->pbDir[offDir];
3408	if (pDirRec2->cbDirRec != 0)
3409	{
3410	pDirEntry->Info.cbObject += ISO9660_GET_ENDIAN(&pDirRec2->cbData);
3411	offDir += pDirRec2->cbDirRec;
3412	cExtents++;
3413	if (!(pDirRec2->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
3414	break;
3415	}
3416	else
3417	offDir = (offDir + pShared->Core.pVol->cbSector) & ~(pShared->Core.pVol->cbSector - 1U);
3418	}
3419	Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x, %u extents ending at %#07x: %s (rc=%Rrc)\n",
3420	pThis->offDir, cExtents, offDir, pDirEntry->szName, rc));
3421	pThis->offDir = offDir;
3422	}
3423
3424	return rc;
3425	}
3426	}
3427
3428	Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x: VERR_NO_MORE_FILES\n", pThis->offDir));
3429	return VERR_NO_MORE_FILES;
3430	}
3431
3432
3433	/**
3434	* The UDF worker for rtFsIsoDir_ReadDir
3435	*/
3436	static int rtFsIsoDir_ReadDirUdf(PRTFSISODIROBJ pThis, PRTFSISODIRSHRD pShared, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry,
3437	RTFSOBJATTRADD enmAddAttr)
3438	{
3439	/*
3440	* At offset zero we've got the '.' entry. This has to be generated
3441	* manually as it's not part of the directory content. The directory
3442	* offset has to be faked for this too, so offDir == 0 indicates the '.'
3443	* entry whereas offDir == 1 is the first file id descriptor.
3444	*/
3445	if (pThis->offDir == 0)
3446	{
3447	if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2)
3448	{
3449	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2;
3450	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW (dot)\n"));
3451	return VERR_BUFFER_OVERFLOW;
3452	}
3453	pDirEntry->cbName = 1;
3454	pDirEntry->szName[0] = '.';
3455	pDirEntry->szName[1] = '\0';
3456	pDirEntry->cwcShortName = 0;
3457	pDirEntry->wszShortName[0] = '\0';
3458
3459	int rc = rtFsIsoCore_QueryInfo(&pShared->Core, &pDirEntry->Info, enmAddAttr);
3460
3461	Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc));
3462	pThis->offDir = 1;
3463	return rc;
3464	}
3465
3466	/*
3467	* Do the directory content.
3468	*/
3469	while (pThis->offDir + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) <= pShared->cbDir + 1)
3470	{
3471	PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pShared->pbDir[pThis->offDir - 1];
3472	uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid);
3473
3474	if (pThis->offDir + cbFid <= pShared->cbDir + 1)
3475	{ /* likely */ }
3476	else
3477	break;
3478
3479	/*
3480	* Do names first as they may cause overflows.
3481	*/
3482	if (pFid->cbName > 1)
3483	{
3484	uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid);
3485	uint32_t cbSrc = pFid->cbName;
3486	if (*pbName == 8)
3487	{
3488	/* Figure out the UTF-8 length first. */
3489	bool fSimple = true;
3490	uint32_t cchDst = 0;
3491	for (uint32_t offSrc = 1; offSrc < cbSrc; offSrc++)
3492	if (!(pbName[offSrc] & 0x80))
3493	cchDst++;
3494	else
3495	{
3496	cchDst += 2;
3497	fSimple = false;
3498	}
3499
3500	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchDst + 1;
3501	if (*pcbDirEntry >= cbNeeded)
3502	{
3503	if (fSimple)
3504	{
3505	Assert(cbSrc - 1 == cchDst);
3506	memcpy(pDirEntry->szName, &pbName[1], cchDst);
3507	pDirEntry->szName[cchDst] = '\0';
3508	}
3509	else
3510	{
3511	char *pszDst = pDirEntry->szName;
3512	for (uint32_t offSrc = 1; offSrc < cbSrc; offSrc++)
3513	pszDst = RTStrPutCp(pszDst, pbName[offSrc]);
3514	*pszDst = '\0';
3515	Assert((size_t)(pszDst - &pDirEntry->szName[0]) == cchDst);
3516	}
3517	}
3518	else
3519	{
3520	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (8-bit)\n", *pcbDirEntry, cbNeeded));
3521	*pcbDirEntry = cbNeeded;
3522	return VERR_BUFFER_OVERFLOW;
3523	}
3524	}
3525	else
3526	{
3527	/* Let RTUtf16BigToUtf8Ex do the bounds checking. */
3528	char *pszDst = pDirEntry->szName;
3529	size_t cbDst = *pcbDirEntry - RT_UOFFSETOF(RTDIRENTRYEX, szName);
3530	size_t cchNeeded = 0;
3531	int rc;
3532	if (*pbName == 16)
3533	rc = RTUtf16BigToUtf8Ex((PCRTUTF16)(pbName + 1), (cbSrc - 1) / sizeof(RTUTF16), &pszDst, cbDst, &cchNeeded);
3534	else
3535	rc = VERR_INVALID_NAME;
3536	if (RT_SUCCESS(rc))
3537	pDirEntry->cbName = (uint16_t)cchNeeded;
3538	else if (rc == VERR_BUFFER_OVERFLOW)
3539	{
3540	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchNeeded + 1;
3541	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cchNeeded=%zu (16-bit)\n", cbDst, cchNeeded));
3542	return VERR_BUFFER_OVERFLOW;
3543	}
3544	else
3545	{
3546	LogRelMax(90, ("ISO/UDF: Malformed directory entry name at %#x: %.*Rhxs\n", pThis->offDir - 1, cbSrc, pbName));
3547	ssize_t cchNeeded2 = RTStrPrintf2(pszDst, cbDst, "bad-name-%#x", pThis->offDir - 1);
3548	if (cchNeeded2 >= 0)
3549	pDirEntry->cbName = (uint16_t)cchNeeded2;
3550	else
3551	{
3552	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + (size_t)-cchNeeded2;
3553	return VERR_BUFFER_OVERFLOW;
3554	}
3555	}
3556	}
3557	}
3558	else if (pFid->fFlags & UDF_FILE_FLAGS_PARENT)
3559	{
3560	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2 + 1;
3561	if (*pcbDirEntry < cbNeeded)
3562	{
3563	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (dot-dot)\n", *pcbDirEntry, cbNeeded));
3564	*pcbDirEntry = cbNeeded;
3565	return VERR_BUFFER_OVERFLOW;
3566	}
3567	pDirEntry->cbName = 2;
3568	pDirEntry->szName[0] = '.';
3569	pDirEntry->szName[1] = '.';
3570	pDirEntry->szName[2] = '\0';
3571	}
3572	else
3573	{
3574	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 1;
3575	if (*pcbDirEntry < cbNeeded)
3576	{
3577	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (empty)\n", *pcbDirEntry, cbNeeded));
3578	*pcbDirEntry = cbNeeded;
3579	return VERR_BUFFER_OVERFLOW;
3580	}
3581	pDirEntry->cbName = 0;
3582	pDirEntry->szName[0] = '\0';
3583	}
3584
3585	pDirEntry->cwcShortName = 0;
3586	pDirEntry->wszShortName[0] = '\0';
3587
3588	/*
3589	* To avoid duplicating code in rtFsIsoCore_InitUdf and
3590	* rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack.
3591	*/
3592	RTFSISOCORE TmpObj;
3593	RT_ZERO(TmpObj);
3594	int rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&TmpObj, &pFid->Icb, pFid, pThis->offDir - 1, pShared->Core.pVol);
3595	if (RT_SUCCESS(rc))
3596	{
3597	rc = rtFsIsoCore_QueryInfo(&TmpObj, &pDirEntry->Info, enmAddAttr);
3598	rtFsIsoCore_Destroy(&TmpObj);
3599	}
3600
3601	/*
3602	* Update.
3603	*/
3604	Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc));
3605	pThis->offDir += cbFid;
3606
3607	return rc;
3608	}
3609
3610	Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: VERR_NO_MORE_FILES\n", pThis->offDir));
3611	return VERR_NO_MORE_FILES;
3612	}
3613
3614
3615	/**
3616	* @interface_method_impl{RTVFSDIROPS,pfnReadDir}
3617	*/
3618	static DECLCALLBACK(int) rtFsIsoDir_ReadDir(void pvThis, PRTDIRENTRYEX pDirEntry, size_t pcbDirEntry,
3619	RTFSOBJATTRADD enmAddAttr)
3620	{
3621	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
3622	PRTFSISODIRSHRD pShared = pThis->pShared;
3623	int rc;
3624	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
3625	rc = rtFsIsoDir_ReadDir9660(pThis, pShared, pDirEntry, pcbDirEntry, enmAddAttr);
3626	else
3627	rc = rtFsIsoDir_ReadDirUdf(pThis, pShared, pDirEntry, pcbDirEntry, enmAddAttr);
3628	return rc;
3629	}
3630
3631
3632	/**
3633	* FAT file operations.
3634	*/
3635	static const RTVFSDIROPS g_rtFsIsoDirOps =
3636	{
3637	{ /* Obj */
3638	RTVFSOBJOPS_VERSION,
3639	RTVFSOBJTYPE_DIR,
3640	"ISO 9660 Dir",
3641	rtFsIsoDir_Close,
3642	rtFsIsoDir_QueryInfo,
3643	RTVFSOBJOPS_VERSION
3644	},
3645	RTVFSDIROPS_VERSION,
3646	0,
3647	{ /* ObjSet */
3648	RTVFSOBJSETOPS_VERSION,
3649	RT_OFFSETOF(RTVFSDIROPS, Obj) - RT_OFFSETOF(RTVFSDIROPS, ObjSet),
3650	rtFsIsoDir_SetMode,
3651	rtFsIsoDir_SetTimes,
3652	rtFsIsoDir_SetOwner,
3653	RTVFSOBJSETOPS_VERSION
3654	},
3655	rtFsIsoDir_TraversalOpen,
3656	rtFsIsoDir_OpenFile,
3657	rtFsIsoDir_OpenDir,
3658	rtFsIsoDir_CreateDir,
3659	rtFsIsoDir_OpenSymlink,
3660	rtFsIsoDir_CreateSymlink,
3661	rtFsIsoDir_QueryEntryInfo,
3662	rtFsIsoDir_UnlinkEntry,
3663	rtFsIsoDir_RenameEntry,
3664	rtFsIsoDir_RewindDir,
3665	rtFsIsoDir_ReadDir,
3666	RTVFSDIROPS_VERSION,
3667	};
3668
3669
3670	/**
3671	* Adds an open child to the parent directory's shared structure.
3672	*
3673	* Maintains an additional reference to the parent dir to prevent it from going
3674	* away. If @a pDir is the root directory, it also ensures the volume is
3675	* referenced and sticks around until the last open object is gone.
3676	*
3677	* @param pDir The directory.
3678	* @param pChild The child being opened.
3679	* @sa rtFsIsoDirShrd_RemoveOpenChild
3680	*/
3681	static void rtFsIsoDirShrd_AddOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild)
3682	{
3683	rtFsIsoDirShrd_Retain(pDir);
3684
3685	RTListAppend(&pDir->OpenChildren, &pChild->Entry);
3686	pChild->pParentDir = pDir;
3687	}
3688
3689
3690	/**
3691	* Removes an open child to the parent directory.
3692	*
3693	* @param pDir The directory.
3694	* @param pChild The child being removed.
3695	*
3696	* @remarks This is the very last thing you do as it may cause a few other
3697	* objects to be released recursively (parent dir and the volume).
3698	*
3699	* @sa rtFsIsoDirShrd_AddOpenChild
3700	*/
3701	static void rtFsIsoDirShrd_RemoveOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild)
3702	{
3703	AssertReturnVoid(pChild->pParentDir == pDir);
3704	RTListNodeRemove(&pChild->Entry);
3705	pChild->pParentDir = NULL;
3706
3707	rtFsIsoDirShrd_Release(pDir);
3708	}
3709
3710
3711	#ifdef LOG_ENABLED
3712	/**
3713	* Logs the content of a directory.
3714	*/
3715	static void rtFsIsoDirShrd_Log9660Content(PRTFSISODIRSHRD pThis)
3716	{
3717	if (LogIs2Enabled())
3718	{
3719	uint32_t offRec = 0;
3720	while (offRec < pThis->cbDir)
3721	{
3722	PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offRec];
3723	if (pDirRec->cbDirRec == 0)
3724	break;
3725
3726	RTUTF16 wszName[128];
3727	if (pThis->Core.pVol->fIsUtf16)
3728	{
3729	PRTUTF16 pwszDst = &wszName[pDirRec->bFileIdLength / sizeof(RTUTF16)];
3730	PCRTUTF16 pwszSrc = (PCRTUTF16)&pDirRec->achFileId[pDirRec->bFileIdLength];
3731	pwszSrc--;
3732	*pwszDst-- = '\0';
3733	while ((uintptr_t)pwszDst >= (uintptr_t)&wszName[0])
3734	{
3735	pwszDst = RT_BE2H_U16(pwszSrc);
3736	pwszDst--;
3737	pwszSrc--;
3738	}
3739	}
3740	else
3741	{
3742	PRTUTF16 pwszDst = wszName;
3743	for (uint32_t off = 0; off < pDirRec->bFileIdLength; off++)
3744	*pwszDst++ = pDirRec->achFileId[off];
3745	*pwszDst = '\0';
3746	}
3747
3748	Log2(("ISO9660: %04x: rec=%#x ea=%#x cb=%#010RX32 off=%#010RX32 fl=%#04x %04u-%02u-%02u %02u:%02u:%02u%+03d unit=%#x igap=%#x idVol=%#x '%ls'\n",
3749	offRec,
3750	pDirRec->cbDirRec,
3751	pDirRec->cExtAttrBlocks,
3752	ISO9660_GET_ENDIAN(&pDirRec->cbData),
3753	ISO9660_GET_ENDIAN(&pDirRec->offExtent),
3754	pDirRec->fFileFlags,
3755	pDirRec->RecTime.bYear + 1900,
3756	pDirRec->RecTime.bMonth,
3757	pDirRec->RecTime.bDay,
3758	pDirRec->RecTime.bHour,
3759	pDirRec->RecTime.bMinute,
3760	pDirRec->RecTime.bSecond,
3761	pDirRec->RecTime.offUtc*4/60,
3762	pDirRec->bFileUnitSize,
3763	pDirRec->bInterleaveGapSize,
3764	ISO9660_GET_ENDIAN(&pDirRec->VolumeSeqNo),
3765	wszName));
3766
3767	uint32_t offSysUse = RT_OFFSETOF(ISO9660DIRREC, achFileId[pDirRec->bFileIdLength]) + !(pDirRec->bFileIdLength & 1);
3768	if (offSysUse < pDirRec->cbDirRec)
3769	{
3770	Log2(("ISO9660: system use (%#x bytes):\n%.*RhxD\n", pDirRec->cbDirRec - offSysUse,
3771	pDirRec->cbDirRec - offSysUse, (uint8_t *)pDirRec + offSysUse));
3772	}
3773
3774	/* advance */
3775	offRec += pDirRec->cbDirRec;
3776	}
3777	}
3778	}
3779	#endif /* LOG_ENABLED */
3780
3781
3782	/**
3783	* Instantiates a new shared directory structure, given 9660 records.
3784	*
3785	* @returns IPRT status code.
3786	* @param pThis The FAT volume instance.
3787	* @param pParentDir The parent directory. This is NULL for the root
3788	* directory.
3789	* @param pDirRec The directory record. Will access @a cDirRecs
3790	* records.
3791	* @param cDirRecs Number of directory records if more than one.
3792	* @param offDirRec The byte offset of the directory record.
3793	* @param ppShared Where to return the shared directory structure.
3794	*/
3795	static int rtFsIsoDirShrd_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec,
3796	uint32_t cDirRecs, uint64_t offDirRec, PRTFSISODIRSHRD *ppShared)
3797	{
3798	/*
3799	* Allocate a new structure and initialize it.
3800	*/
3801	int rc = VERR_NO_MEMORY;
3802	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)RTMemAllocZ(sizeof(*pShared));
3803	if (pShared)
3804	{
3805	rc = rtFsIsoCore_InitFrom9660DirRec(&pShared->Core, pDirRec, cDirRecs, offDirRec, 0 /uVersion/, pThis);
3806	if (RT_SUCCESS(rc))
3807	{
3808	RTListInit(&pShared->OpenChildren);
3809	pShared->cbDir = ISO9660_GET_ENDIAN(&pDirRec->cbData);
3810	pShared->pbDir = (uint8_t *)RTMemAllocZ(pShared->cbDir + 256);
3811	if (pShared->pbDir)
3812	{
3813	rc = RTVfsFileReadAt(pThis->hVfsBacking, pShared->Core.FirstExtent.off, pShared->pbDir, pShared->cbDir, NULL);
3814	if (RT_SUCCESS(rc))
3815	{
3816	#ifdef LOG_ENABLED
3817	rtFsIsoDirShrd_Log9660Content(pShared);
3818	#endif
3819
3820	/*
3821	* Link into parent directory so we can use it to update
3822	* our directory entry.
3823	*/
3824	if (pParentDir)
3825	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
3826	*ppShared = pShared;
3827	return VINF_SUCCESS;
3828	}
3829	}
3830	else
3831	rc = VERR_NO_MEMORY;
3832	}
3833	RTMemFree(pShared);
3834	}
3835	*ppShared = NULL;
3836	return rc;
3837	}
3838
3839
3840	#ifdef LOG_ENABLED
3841	/**
3842	* Logs the content of a directory.
3843	*/
3844	static void rtFsIsoDirShrd_LogUdfContent(PRTFSISODIRSHRD pThis)
3845	{
3846	if (LogIs2Enabled())
3847	{
3848	uint32_t offDesc = 0;
3849	while (offDesc + RT_OFFSETOF(UDFFILEIDDESC, abImplementationUse) < pThis->cbDir)
3850	{
3851	PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pThis->pbDir[offDesc];
3852	uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid);
3853	if (offDesc + cbFid > pThis->cbDir)
3854	break;
3855
3856	uint32_t cwcName = 0;
3857	RTUTF16 wszName[260];
3858	if (pFid->cbName > 0)
3859	{
3860	uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid);
3861	uint32_t offSrc = 1;
3862	if (*pbName == 8)
3863	while (offSrc < pFid->cbName)
3864	{
3865	wszName[cwcName] = pbName[offSrc];
3866	cwcName++;
3867	offSrc++;
3868	}
3869	else if (*pbName == 16)
3870	while (offSrc + 1 <= pFid->cbName)
3871	{
3872	wszName[cwcName] = RT_MAKE_U16(pbName[offSrc + 1], pbName[offSrc]);
3873	cwcName++;
3874	offSrc += 2;
3875	}
3876	else
3877	{
3878	RTUtf16CopyAscii(wszName, RT_ELEMENTS(wszName), "<bad type>");
3879	cwcName = 10;
3880	}
3881	}
3882	else if (pFid->fFlags & UDF_FILE_FLAGS_PARENT)
3883	{
3884	wszName[0] = '.';
3885	wszName[1] = '.';
3886	cwcName = 2;
3887	}
3888	else
3889	{
3890	RTUtf16CopyAscii(wszName, RT_ELEMENTS(wszName), "<empty>");
3891	cwcName = 7;
3892	}
3893	wszName[cwcName] = '\0';
3894
3895	Log2(("ISO/UDF: %04x: fFlags=%#x uVer=%u Icb={%#04x:%#010RX32 LB %#06x t=%u} cbName=%#04x cbIU=%#x '%ls'\n",
3896	offDesc,
3897	pFid->fFlags,
3898	pFid->uVersion,
3899	pFid->Icb.Location.uPartitionNo,
3900	pFid->Icb.Location.off,
3901	pFid->Icb.cb,
3902	pFid->Icb.uType,
3903	pFid->cbName,
3904	pFid->cbImplementationUse,
3905	wszName));
3906	int rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pFid->Tag, pThis->cbDir - offDesc,
3907	UDF_TAG_ID_FILE_ID_DESC, pFid->Tag.offTag, NULL);
3908	if (RT_FAILURE(rc))
3909	Log2(("ISO/UDF: Bad Tag: %Rrc - idTag=%#x\n", rc, pFid->Tag.idTag));
3910	if (pFid->cbImplementationUse > 32)
3911	Log2(("ISO/UDF: impl use (%#x bytes):\n%.*RhxD\n", pFid->cbImplementationUse, pFid->abImplementationUse));
3912	else if (pFid->cbImplementationUse > 0)
3913	Log2(("ISO/UDF: impl use (%#x bytes): %.*Rhxs\n", pFid->cbImplementationUse, pFid->abImplementationUse));
3914
3915	/* advance */
3916	offDesc += cbFid;
3917	}
3918
3919	if (offDesc < pThis->cbDir)
3920	Log2(("ISO/UDF: warning! %#x trailing bytes in directory:\n%.*RhxD\n",
3921	pThis->cbDir - offDesc, pThis->cbDir - offDesc, &pThis->pbDir[offDesc]));
3922	}
3923	}
3924	#endif /* LOG_ENABLED */
3925
3926
3927	/**
3928	* Instantiates a new shared directory structure, given UDF descriptors.
3929	*
3930	* @returns IPRT status code.
3931	* @param pThis The FAT volume instance.
3932	* @param pParentDir The parent directory. This is NULL for the root
3933	* directory.
3934	* @param pAllocDesc The allocation descriptor for the directory ICB.
3935	* @param pFileIdDesc The file ID descriptor. This is NULL for the root.
3936	* @param offInDir The offset of the file ID descriptor in the parent
3937	* directory. This is used when looking up shared
3938	* directory objects. (Pass 0 for root.)
3939	* @param ppShared Where to return the shared directory structure.
3940	*/
3941	static int rtFsIsoDirShrd_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFLONGAD pAllocDesc,
3942	PCUDFFILEIDDESC pFileIdDesc, uintptr_t offInDir, PRTFSISODIRSHRD *ppShared)
3943	{
3944	/*
3945	* Allocate a new structure and initialize it.
3946	*/
3947	int rc = VERR_NO_MEMORY;
3948	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)RTMemAllocZ(sizeof(*pShared));
3949	if (pShared)
3950	{
3951	rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&pShared->Core, pAllocDesc, pFileIdDesc, offInDir, pThis);
3952	if (RT_SUCCESS(rc))
3953	{
3954	RTListInit(&pShared->OpenChildren);
3955
3956	if (pShared->Core.cbObject < RTFSISO_MAX_DIR_SIZE)
3957	{
3958	pShared->cbDir = (uint32_t)pShared->Core.cbObject;
3959	pShared->pbDir = (uint8_t *)RTMemAllocZ(RT_MAX(RT_ALIGN_32(pShared->cbDir, 512), 512));
3960	if (pShared->pbDir)
3961	{
3962	rc = rtFsIsoCore_ReadWorker(&pShared->Core, 0, pShared->pbDir, pShared->cbDir, NULL, NULL);
3963	if (RT_SUCCESS(rc))
3964	{
3965	#ifdef LOG_ENABLED
3966	rtFsIsoDirShrd_LogUdfContent(pShared);
3967	#endif
3968
3969	/*
3970	* Link into parent directory so we can use it to update
3971	* our directory entry.
3972	*/
3973	if (pParentDir)
3974	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
3975	*ppShared = pShared;
3976	return VINF_SUCCESS;
3977	}
3978	}
3979	else
3980	rc = VERR_NO_MEMORY;
3981	}
3982	}
3983	RTMemFree(pShared);
3984	}
3985
3986	*ppShared = NULL;
3987	return rc;
3988	}
3989
3990
3991	/**
3992	* Instantiates a new directory with a shared structure presupplied.
3993	*
3994	* @returns IPRT status code.
3995	* @param pThis The FAT volume instance.
3996	* @param pShared Referenced pointer to the shared structure. The
3997	* reference is always CONSUMED.
3998	* @param phVfsDir Where to return the directory handle.
3999	*/
4000	static int rtFsIsoDir_NewWithShared(PRTFSISOVOL pThis, PRTFSISODIRSHRD pShared, PRTVFSDIR phVfsDir)
4001	{
4002	/*
4003	* Create VFS object around the shared structure.
4004	*/
4005	PRTFSISODIROBJ pNewDir;
4006	int rc = RTVfsNewDir(&g_rtFsIsoDirOps, sizeof(pNewDir), 0 /fFlags*/, pThis->hVfsSelf,
4007	NIL_RTVFSLOCK /use volume lock/, phVfsDir, (void **)&pNewDir);
4008	if (RT_SUCCESS(rc))
4009	{
4010	/*
4011	* Look for existing shared object, create a new one if necessary.
4012	* We CONSUME a reference to pShared here.
4013	*/
4014	pNewDir->offDir = 0;
4015	pNewDir->pShared = pShared;
4016	return VINF_SUCCESS;
4017	}
4018
4019	rtFsIsoDirShrd_Release(pShared);
4020	*phVfsDir = NIL_RTVFSDIR;
4021	return rc;
4022	}
4023
4024
4025
4026	/**
4027	* Instantiates a new directory VFS instance for ISO 9660, creating the shared
4028	* structure as necessary.
4029	*
4030	* @returns IPRT status code.
4031	* @param pThis The FAT volume instance.
4032	* @param pParentDir The parent directory. This is NULL for the root
4033	* directory.
4034	* @param pDirRec The directory record.
4035	* @param cDirRecs Number of directory records if more than one.
4036	* @param offDirRec The byte offset of the directory record.
4037	* @param phVfsDir Where to return the directory handle.
4038	*/
4039	static int rtFsIsoDir_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec,
4040	uint32_t cDirRecs, uint64_t offDirRec, PRTVFSDIR phVfsDir)
4041	{
4042	/*
4043	* Look for existing shared object, create a new one if necessary.
4044	*/
4045	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)rtFsIsoDir_LookupShared(pParentDir, offDirRec);
4046	if (!pShared)
4047	{
4048	int rc = rtFsIsoDirShrd_New9660(pThis, pParentDir, pDirRec, cDirRecs, offDirRec, &pShared);
4049	if (RT_FAILURE(rc))
4050	{
4051	*phVfsDir = NIL_RTVFSDIR;
4052	return rc;
4053	}
4054	}
4055	return rtFsIsoDir_NewWithShared(pThis, pShared, phVfsDir);
4056	}
4057
4058
4059	/**
4060	* Instantiates a new directory VFS instance for UDF, creating the shared
4061	* structure as necessary.
4062	*
4063	* @returns IPRT status code.
4064	* @param pThis The FAT volume instance.
4065	* @param pParentDir The parent directory.
4066	* @param pFid The file ID descriptor for the directory.
4067	* @param phVfsDir Where to return the directory handle.
4068	*/
4069	static int rtFsIsoDir_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, PRTVFSDIR phVfsDir)
4070	{
4071	Assert(pFid);
4072	Assert(pParentDir);
4073	uintptr_t const offInDir = (uintptr_t)pFid - (uintptr_t)pParentDir->pbDir;
4074	Assert(offInDir < pParentDir->cbDir);
4075
4076	/*
4077	* Look for existing shared object, create a new one if necessary.
4078	*/
4079	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)rtFsIsoDir_LookupShared(pParentDir, offInDir);
4080	if (!pShared)
4081	{
4082	int rc = rtFsIsoDirShrd_NewUdf(pThis, pParentDir, &pFid->Icb, pFid, offInDir, &pShared);
4083	if (RT_FAILURE(rc))
4084	{
4085	*phVfsDir = NIL_RTVFSDIR;
4086	return rc;
4087	}
4088	}
4089	return rtFsIsoDir_NewWithShared(pThis, pShared, phVfsDir);
4090	}
4091
4092
4093	/**
4094	* @interface_method_impl{RTVFSOBJOPS::Obj,pfnClose}
4095	*/
4096	static DECLCALLBACK(int) rtFsIsoVol_Close(void *pvThis)
4097	{
4098	PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis;
4099	Log(("rtFsIsoVol_Close(%p)\n", pThis));
4100
4101	if (pThis->pRootDir)
4102	{
4103	Assert(RTListIsEmpty(&pThis->pRootDir->OpenChildren));
4104	Assert(pThis->pRootDir->Core.cRefs == 1);
4105	rtFsIsoDirShrd_Release(pThis->pRootDir);
4106	pThis->pRootDir = NULL;
4107	}
4108
4109	RTVfsFileRelease(pThis->hVfsBacking);
4110	pThis->hVfsBacking = NIL_RTVFSFILE;
4111
4112	return VINF_SUCCESS;
4113	}
4114
4115
4116	/**
4117	* @interface_method_impl{RTVFSOBJOPS::Obj,pfnQueryInfo}
4118	*/
4119	static DECLCALLBACK(int) rtFsIsoVol_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
4120	{
4121	RT_NOREF(pvThis, pObjInfo, enmAddAttr);
4122	return VERR_WRONG_TYPE;
4123	}
4124
4125
4126	/**
4127	* @interface_method_impl{RTVFSOPS,pfnOpenRoo}
4128	*/
4129	static DECLCALLBACK(int) rtFsIsoVol_OpenRoot(void *pvThis, PRTVFSDIR phVfsDir)
4130	{
4131	PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis;
4132
4133	rtFsIsoDirShrd_Retain(pThis->pRootDir); /* consumed by the next call */
4134	return rtFsIsoDir_NewWithShared(pThis, pThis->pRootDir, phVfsDir);
4135	}
4136
4137
4138	/**
4139	* @interface_method_impl{RTVFSOPS,pfnIsRangeInUse}
4140	*/
4141	static DECLCALLBACK(int) rtFsIsoVol_IsRangeInUse(void pvThis, RTFOFF off, size_t cb, bool pfUsed)
4142	{
4143	RT_NOREF(pvThis, off, cb, pfUsed);
4144	return VERR_NOT_IMPLEMENTED;
4145	}
4146
4147
4148	DECL_HIDDEN_CONST(const RTVFSOPS) g_rtFsIsoVolOps =
4149	{
4150	{ /* Obj */
4151	RTVFSOBJOPS_VERSION,
4152	RTVFSOBJTYPE_VFS,
4153	"ISO 9660/UDF",
4154	rtFsIsoVol_Close,
4155	rtFsIsoVol_QueryInfo,
4156	RTVFSOBJOPS_VERSION
4157	},
4158	RTVFSOPS_VERSION,
4159	0 /* fFeatures */,
4160	rtFsIsoVol_OpenRoot,
4161	rtFsIsoVol_IsRangeInUse,
4162	RTVFSOPS_VERSION
4163	};
4164
4165
4166	/**
4167	* Checks the descriptor tag and CRC.
4168	*
4169	* @retval IPRT status code.
4170	* @retval VERR_ISOFS_TAG_IS_ALL_ZEROS
4171	* @retval VERR_MISMATCH
4172	* @retval VERR_ISOFS_UNSUPPORTED_TAG_VERSION
4173	* @retval VERR_ISOFS_TAG_SECTOR_MISMATCH
4174	* @retval VERR_ISOFS_BAD_TAG_CHECKSUM
4175	*
4176	* @param pTag The tag to check.
4177	* @param idTag The expected descriptor tag ID, UINT16_MAX matches any
4178	* tag ID.
4179	* @param offTag The sector offset of the tag.
4180	* @param pErrInfo Where to return extended error info.
4181	*/
4182	static int rtFsIsoVolValidateUdfDescTag(PCUDFTAG pTag, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo)
4183	{
4184	/*
4185	* Checksum the tag first.
4186	*/
4187	const uint8_t pbTag = (const uint8_t )pTag;
4188	uint8_t const bChecksum = pbTag[0]
4189	+ pbTag[1]
4190	+ pbTag[2]
4191	+ pbTag[3]
4192	+ pbTag[5] /* skipping byte 4 as that's the checksum. */
4193	+ pbTag[6]
4194	+ pbTag[7]
4195	+ pbTag[8]
4196	+ pbTag[9]
4197	+ pbTag[10]
4198	+ pbTag[11]
4199	+ pbTag[12]
4200	+ pbTag[13]
4201	+ pbTag[14]
4202	+ pbTag[15];
4203	if (pTag->uChecksum == bChecksum)
4204	{
4205	/*
4206	* Do the matching.
4207	*/
4208	if ( pTag->uVersion == 3
4209	\|\| pTag->uVersion == 2)
4210	{
4211	if ( pTag->idTag == idTag
4212	\|\| idTag == UINT16_MAX)
4213	{
4214	if (pTag->offTag == offTag)
4215	{
4216	//Log3(("ISO/UDF: Valid descriptor %#06x at %#010RX32; cbDescriptorCrc=%#06RX32 uTagSerialNo=%#x\n",
4217	// pTag->idTag, offTag, pTag->cbDescriptorCrc, pTag->uTagSerialNo));
4218	return VINF_SUCCESS;
4219	}
4220
4221	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Sector mismatch: %#RX32 (%.*Rhxs)\n",
4222	idTag, offTag, pTag->offTag, sizeof(*pTag), pTag));
4223	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TAG_SECTOR_MISMATCH,
4224	"Descriptor tag sector number mismatch: %#x, expected %#x (%.*Rhxs)",
4225	pTag->offTag, offTag, sizeof(*pTag), pTag);
4226	}
4227	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Tag ID mismatch: %#x (%.*Rhxs)\n",
4228	idTag, offTag, pTag->idTag, sizeof(*pTag), pTag));
4229	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_MISMATCH, "Descriptor tag ID mismatch: %#x, expected %#x (%.*Rhxs)",
4230	pTag->idTag, idTag, sizeof(*pTag), pTag);
4231	}
4232	if (ASMMemIsZero(pTag, sizeof(*pTag)))
4233	{
4234	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): All zeros\n", idTag, offTag));
4235	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TAG_IS_ALL_ZEROS, "Descriptor is all zeros");
4236	}
4237
4238	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Unsupported version: %#x (%.*Rhxs)\n",
4239	idTag, offTag, pTag->uVersion, sizeof(*pTag), pTag));
4240	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNSUPPORTED_TAG_VERSION, "Unsupported descriptor tag version: %#x, expected 2 or 3 (%.*Rhxs)",
4241	pTag->uVersion, sizeof(*pTag), pTag);
4242	}
4243	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): checksum error: %#x, calc %#x (%.*Rhxs)\n",
4244	idTag, offTag, pTag->uChecksum, bChecksum, sizeof(*pTag), pTag));
4245	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_TAG_CHECKSUM,
4246	"Descriptor tag checksum error: %#x, calculated %#x (%.*Rhxs)",
4247	pTag->uChecksum, bChecksum, sizeof(*pTag), pTag);
4248	}
4249
4250
4251	/**
4252	* Checks the descriptor CRC.
4253	*
4254	* @retval VINF_SUCCESS
4255	* @retval VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC
4256	* @retval VERR_ISOFS_DESC_CRC_MISMATCH
4257	*
4258	* @param pTag The descriptor buffer to checksum.
4259	* @param cbDesc The size of the descriptor buffer.
4260	* @param pErrInfo Where to return extended error info.
4261	*/
4262	static int rtFsIsoVolValidateUdfDescCrc(PCUDFTAG pTag, size_t cbDesc, PRTERRINFO pErrInfo)
4263	{
4264	if (pTag->cbDescriptorCrc + sizeof(*pTag) <= cbDesc)
4265	{
4266	uint16_t uCrc = RTCrc16Ccitt(pTag + 1, pTag->cbDescriptorCrc);
4267	if (pTag->uDescriptorCrc == uCrc)
4268	return VINF_SUCCESS;
4269
4270	Log(("rtFsIsoVolValidateUdfDescCrc(,%#x,%#010RX32,): Descriptor CRC mismatch: expected %#x, calculated %#x (cbDescriptorCrc=%#x)\n",
4271	pTag->idTag, pTag->offTag, pTag->uDescriptorCrc, uCrc, pTag->cbDescriptorCrc));
4272	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_DESC_CRC_MISMATCH,
4273	"Descriptor CRC mismatch: exepcted %#x, calculated %#x (cbDescriptor=%#x, idTag=%#x, offTag=%#010RX32)",
4274	pTag->uDescriptorCrc, uCrc, pTag->cbDescriptorCrc, pTag->idTag, pTag->offTag);
4275	}
4276
4277	Log(("rtFsIsoVolValidateUdfDescCrc(,%#x,%#010RX32,): Insufficient data to CRC: cbDescriptorCrc=%#x cbDesc=%#zx\n",
4278	pTag->idTag, pTag->offTag, pTag->cbDescriptorCrc, cbDesc));
4279	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC,
4280	"Insufficient data to CRC: cbDescriptorCrc=%#x cbDesc=%#zx (idTag=%#x, offTag=%#010RX32)",
4281	pTag->cbDescriptorCrc, cbDesc, pTag->idTag, pTag->offTag);
4282	}
4283
4284
4285	/**
4286	* Checks the descriptor tag and CRC.
4287	*
4288	* @retval VINF_SUCCESS
4289	* @retval VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC
4290	* @retval VERR_ISOFS_TAG_IS_ALL_ZEROS
4291	* @retval VERR_MISMATCH
4292	* @retval VERR_ISOFS_UNSUPPORTED_TAG_VERSION
4293	* @retval VERR_ISOFS_TAG_SECTOR_MISMATCH
4294	* @retval VERR_ISOFS_BAD_TAG_CHECKSUM
4295	* @retval VERR_ISOFS_DESC_CRC_MISMATCH
4296	*
4297	* @param pTag The descriptor buffer to check the tag of and to
4298	* checksum.
4299	* @param cbDesc The size of the descriptor buffer.
4300	* @param idTag The expected descriptor tag ID, UINT16_MAX
4301	* matches any tag ID.
4302	* @param offTag The sector offset of the tag.
4303	* @param pErrInfo Where to return extended error info.
4304	*/
4305	static int rtFsIsoVolValidateUdfDescTagAndCrc(PCUDFTAG pTag, size_t cbDesc, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo)
4306	{
4307	int rc = rtFsIsoVolValidateUdfDescTag(pTag, idTag, offTag, pErrInfo);
4308	if (RT_SUCCESS(rc))
4309	rc = rtFsIsoVolValidateUdfDescCrc(pTag, cbDesc, pErrInfo);
4310	return rc;
4311	}
4312
4313
4314
4315
4316	static int rtFsIsoVolProcessUdfFileSetDescs(PRTFSISOVOL pThis, uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo)
4317	{
4318
4319	/*
4320	* We assume there is a single file descriptor and don't bother checking what comes next.
4321	*/
4322	PUDFFILESETDESC pFsd = (PUDFFILESETDESC)pbBuf;
4323	Assert(cbBuf > sizeof(*pFsd)); NOREF(cbBuf);
4324	RT_ZERO(*pFsd);
4325	size_t cbToRead = RT_MAX(pThis->Udf.VolInfo.FileSetDescriptor.cb, sizeof(*pFsd));
4326	int rc = rtFsIsoVolUdfVpRead(pThis, pThis->Udf.VolInfo.FileSetDescriptor.Location.uPartitionNo,
4327	pThis->Udf.VolInfo.FileSetDescriptor.Location.off, 0, pFsd, cbToRead);
4328	if (RT_SUCCESS(rc))
4329	{
4330	rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pFsd->Tag, cbToRead, UDF_TAG_ID_FILE_SET_DESC,
4331	pThis->Udf.VolInfo.FileSetDescriptor.Location.off, pErrInfo);
4332	if (RT_SUCCESS(rc))
4333	{
4334	#ifdef LOG_ENABLED
4335	Log(("ISO/UDF: File set descriptor at %#RX32 (%#RX32:%#RX32)\n", pFsd->Tag.offTag,
4336	pThis->Udf.VolInfo.FileSetDescriptor.Location.uPartitionNo,
4337	pThis->Udf.VolInfo.FileSetDescriptor.Location.off));
4338	if (LogIs2Enabled())
4339	{
4340	UDF_LOG2_MEMBER_TIMESTAMP(pFsd, RecordingTimestamp);
4341	UDF_LOG2_MEMBER(pFsd, "#06RX16", uInterchangeLevel);
4342	UDF_LOG2_MEMBER(pFsd, "#06RX16", uMaxInterchangeLevel);
4343	UDF_LOG2_MEMBER(pFsd, "#010RX32", fCharacterSets);
4344	UDF_LOG2_MEMBER(pFsd, "#010RX32", fMaxCharacterSets);
4345	UDF_LOG2_MEMBER(pFsd, "#010RX32", uFileSetNo);
4346	UDF_LOG2_MEMBER(pFsd, "#010RX32", uFileSetDescNo);
4347	UDF_LOG2_MEMBER_CHARSPEC(pFsd, LogicalVolumeIDCharSet);
4348	UDF_LOG2_MEMBER_DSTRING(pFsd, achLogicalVolumeID);
4349	UDF_LOG2_MEMBER_CHARSPEC(pFsd, FileSetCharSet);
4350	UDF_LOG2_MEMBER_DSTRING(pFsd, achFileSetID);
4351	UDF_LOG2_MEMBER_DSTRING(pFsd, achCopyrightFile);
4352	UDF_LOG2_MEMBER_DSTRING(pFsd, achAbstractFile);
4353	UDF_LOG2_MEMBER_LONGAD(pFsd, RootDirIcb);
4354	UDF_LOG2_MEMBER_ENTITY_ID(pFsd, idDomain);
4355	UDF_LOG2_MEMBER_LONGAD(pFsd, NextExtent);
4356	UDF_LOG2_MEMBER_LONGAD(pFsd, SystemStreamDirIcb);
4357	if (!ASMMemIsZero(&pFsd->abReserved[0], sizeof(pFsd->abReserved)))
4358	UDF_LOG2_MEMBER(pFsd, "%.32Rhxs", abReserved);
4359	}
4360	#endif
4361
4362	/*
4363	* Do some basic sanity checking.
4364	*/
4365	if (!UDF_IS_CHAR_SET_OSTA(&pFsd->FileSetCharSet))
4366	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_UNSUPPORTED_CHAR_SET,
4367	"Invalid file set charset %.64Rhxs", &pFsd->FileSetCharSet);
4368	if ( pFsd->RootDirIcb.cb == 0
4369	\|\| pFsd->RootDirIcb.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
4370	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_ZERO_ROOT_DIR,
4371	"Root Dir ICB location is zero or malformed: uType=%#x cb=%#x loc=%#x:%#RX32",
4372	pFsd->RootDirIcb.uType, pFsd->RootDirIcb.cb,
4373	pFsd->RootDirIcb.Location.uPartitionNo, pFsd->RootDirIcb.Location.off);
4374	if ( pFsd->NextExtent.cb != 0
4375	&& pFsd->NextExtent.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
4376	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_NEXT_EXTENT,
4377	"NextExtent isn't zero: uType=%#x cb=%#x loc=%#x:%#RX32",
4378	pFsd->NextExtent.uType, pFsd->NextExtent.cb,
4379	pFsd->NextExtent.Location.uPartitionNo, pFsd->NextExtent.Location.off);
4380
4381	/*
4382	* Copy the information we need.
4383	*/
4384	pThis->Udf.VolInfo.RootDirIcb = pFsd->RootDirIcb;
4385	if ( pFsd->SystemStreamDirIcb.cb > 0
4386	&& pFsd->SystemStreamDirIcb.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
4387	pThis->Udf.VolInfo.SystemStreamDirIcb = pFsd->SystemStreamDirIcb;
4388	else
4389	RT_ZERO(pThis->Udf.VolInfo.SystemStreamDirIcb);
4390	return VINF_SUCCESS;
4391	}
4392	return rc;
4393	}
4394	return RTERRINFO_LOG_SET(pErrInfo, rc, "Error reading file set descriptor");
4395	}
4396
4397
4398	/**
4399	* Check validatity and extract information from the descriptors in the VDS seq.
4400	*
4401	* @returns IPRT status code
4402	* @param pThis The instance.
4403	* @param pInfo The VDS sequence info.
4404	* @param pErrInfo Where to return extended error info.
4405	*/
4406	static int rtFsIsoVolProcessUdfVdsSeqInfo(PRTFSISOVOL pThis, PRTFSISOVDSINFO pInfo, PRTERRINFO pErrInfo)
4407	{
4408	/*
4409	* Check the basic descriptor counts.
4410	*/
4411	PUDFPRIMARYVOLUMEDESC pPvd;
4412	if (pInfo->cPrimaryVols == 1)
4413	pPvd = pInfo->apPrimaryVols[0];
4414	else
4415	{
4416	if (pInfo->cPrimaryVols == 0)
4417	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_PVD, "No primary volume descriptor was found");
4418	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MULTIPLE_PVDS,
4419	"More than one primary volume descriptor was found: %u", pInfo->cPrimaryVols);
4420	}
4421
4422	PUDFLOGICALVOLUMEDESC pLvd;
4423	if (pInfo->cLogicalVols == 1)
4424	pLvd = pInfo->apLogicalVols[0];
4425	else
4426	{
4427	if (pInfo->cLogicalVols == 0)
4428	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_LVD, "No logical volume descriptor was found");
4429	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MULTIPLE_LVDS,
4430	"More than one logical volume descriptor was found: %u", pInfo->cLogicalVols);
4431	}
4432
4433	#if 0
4434	if (pInfo->cPartitions == 0)
4435	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_PD, "No partition descriptors was found");
4436	#endif
4437
4438	/*
4439	* Check out the partition map in the logical volume descriptor.
4440	* Produce the mapping table while going about that.
4441	*/
4442	if (pLvd->cPartitionMaps > 64)
4443	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TOO_MANY_PART_MAPS,
4444	"Too many partition maps: %u (max 64)", pLvd->cPartitionMaps);
4445
4446	PRTFSISOVOLUDFPMAP paPartMaps = NULL;
4447	if (pLvd->cPartitionMaps > 0)
4448	{
4449	pInfo->paPartMaps = paPartMaps = (PRTFSISOVOLUDFPMAP)RTMemAllocZ(sizeof(paPartMaps[0]) * pLvd->cPartitionMaps);
4450	if (!paPartMaps)
4451	return VERR_NO_MEMORY;
4452	}
4453	uint32_t cPartMaps = 0;
4454
4455	if (pLvd->cbMapTable)
4456	{
4457	uint32_t off = 0;
4458	while (off + sizeof(UDFPARTMAPHDR) <= pLvd->cbMapTable)
4459	{
4460	PCUDFPARTMAPHDR pHdr = (PCUDFPARTMAPHDR)&pLvd->abPartitionMaps[off];
4461
4462	/*
4463	* Bounds checking.
4464	*/
4465	if (off + pHdr->cb > pLvd->cbMapTable)
4466	{
4467	if (cPartMaps < pLvd->cbMapTable)
4468	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MALFORMED_PART_MAP_TABLE,
4469	"Incomplete partition map entry at offset %#x: cb=%#x -> offEnd=%#x cbMapTable=%#x (type=%#x)",
4470	off, pHdr->cb, off + pHdr->cb, pLvd->cbMapTable, pHdr->bType);
4471	LogRel(("ISO/UDF: Warning: Incomplete partition map entry at offset %#x: cb=%#x -> offEnd=%#x cbMapTable=%#x (type=%#x)\n",
4472	off, pHdr->cb, off + pHdr->cb, pLvd->cbMapTable, pHdr->bType));
4473	break;
4474	}
4475	if (cPartMaps >= pLvd->cPartitionMaps)
4476	{
4477	LogRel(("ISO/UDF: Warning: LVD::cPartitionMaps is %u but there are more bytes in the table. (off=%#x cb=%#x cbMapTable=%#x bType=%#x)\n",
4478	cPartMaps - pLvd->cPartitionMaps, off, pHdr->cb, pLvd->cbMapTable, pHdr->bType));
4479	break;
4480	}
4481
4482	/*
4483	* Extract relevant info out of the entry.
4484	*/
4485	paPartMaps[cPartMaps].offMapTable = (uint16_t)off;
4486	uint16_t uPartitionNo;
4487	if (pHdr->bType == 1)
4488	{
4489	PCUDFPARTMAPTYPE1 pType1 = (PCUDFPARTMAPTYPE1)pHdr;
4490	paPartMaps[cPartMaps].uVolumeSeqNo = pType1->uVolumeSeqNo;
4491	paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_PLAIN;
4492	uPartitionNo = pType1->uPartitionNo;
4493	}
4494	else if (pHdr->bType == 2)
4495	{
4496	PCUDFPARTMAPTYPE2 pType2 = (PCUDFPARTMAPTYPE2)pHdr;
4497	if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_VPM_PARTITION_TYPE))
4498	{
4499	paPartMaps[cPartMaps].bType = pType2->idPartitionType.Suffix.Udf.uUdfRevision >= 0x200
4500	? RTFSISO_UDF_PMAP_T_VPM_20 : RTFSISO_UDF_PMAP_T_VPM_15;
4501	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_VPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported",
4502	pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision);
4503	}
4504	else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_SPM_PARTITION_TYPE))
4505	{
4506	paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_SPM;
4507	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_SPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported",
4508	pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision);
4509	}
4510	else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_MPM_PARTITION_TYPE))
4511	{
4512	paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_MPM;
4513	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported",
4514	pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision);
4515	}
4516	else
4517	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNKNOWN_PART_MAP_TYPE_ID,
4518	"Unknown partition map ID for #%u @ %#x: %.23s",
4519	cPartMaps, off, pType2->idPartitionType.achIdentifier);
4520	#if 0 /* unreachable code */
4521	paPartMaps[cPartMaps].uVolumeSeqNo = pType2->uVolumeSeqNo;
4522	uPartitionNo = pType2->uPartitionNo;
4523	#endif
4524	}
4525	else
4526	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNKNOWN_PART_MAP_ENTRY_TYPE,
4527	"Unknown partition map entry type #%u @ %#x: %u", cPartMaps, off, pHdr->bType);
4528	paPartMaps[cPartMaps].uPartitionNo = uPartitionNo;
4529
4530	/*
4531	* Lookup the partition number and retrieve the relevant info from the partition descriptor.
4532	*/
4533	uint32_t i = pInfo->cPartitions;
4534	while (i-- > 0)
4535	{
4536	PUDFPARTITIONDESC pPd = pInfo->apPartitions[i];
4537	if (paPartMaps[cPartMaps].uPartitionNo == pPd->uPartitionNo)
4538	{
4539	paPartMaps[cPartMaps].idxPartDesc = (uint16_t)i;
4540	paPartMaps[cPartMaps].cSectors = pPd->cSectors;
4541	paPartMaps[cPartMaps].offLocation = pPd->offLocation;
4542	paPartMaps[cPartMaps].offByteLocation = (uint64_t)pPd->offLocation * pThis->cbSector;
4543	paPartMaps[cPartMaps].fFlags = pPd->fFlags;
4544	paPartMaps[cPartMaps].uAccessType = pPd->uAccessType;
4545	if (!UDF_ENTITY_ID_EQUALS(&pPd->PartitionContents, UDF_ENTITY_ID_PD_PARTITION_CONTENTS_UDF))
4546	paPartMaps[cPartMaps].fHaveHdr = false;
4547	else
4548	{
4549	paPartMaps[cPartMaps].fHaveHdr = true;
4550	paPartMaps[cPartMaps].Hdr = pPd->ContentsUse.Hdr;
4551	}
4552	break;
4553	}
4554	}
4555	if (i > pInfo->cPartitions)
4556	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_PARTITION_NOT_FOUND,
4557	"Partition #%u (%#x) specified by mapping entry #%u (@ %#x) was not found! (int-type %u)",
4558	uPartitionNo, uPartitionNo, cPartMaps, off, paPartMaps[cPartMaps].bType);
4559
4560	/*
4561	* Advance.
4562	*/
4563	cPartMaps++;
4564	off += pHdr->cb;
4565	}
4566
4567	if (cPartMaps < pLvd->cPartitionMaps)
4568	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_INCOMPLETE_PART_MAP_TABLE,
4569	"Only found %u of the %u announced partition mapping table entries",
4570	cPartMaps, pLvd->cPartitionMaps);
4571	}
4572
4573	/* It might be theoretically possible to not use virtual partitions for
4574	accessing data, so just warn if there aren't any. */
4575	if (cPartMaps == 0)
4576	LogRel(("ISO/UDF: Warning: No partition maps!\n"));
4577
4578	/*
4579	* Check out the logical volume descriptor.
4580	*/
4581	if ( pLvd->cbLogicalBlock < pThis->cbSector
4582	\|\| pLvd->cbLogicalBlock > RTFSISO_MAX_LOGICAL_BLOCK_SIZE
4583	\|\| (pLvd->cbLogicalBlock % pThis->cbSector) != 0)
4584	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNSUPPORTED_LOGICAL_BLOCK_SIZE,
4585	"Logical block size of %#x is not supported with a sector size of %#x",
4586	pLvd->cbLogicalBlock, pThis->cbSector);
4587
4588	if (!UDF_ENTITY_ID_EQUALS(&pLvd->idDomain, UDF_ENTITY_ID_LVD_DOMAIN))
4589	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_DOMAIN_ID,
4590	"Unsupported domain ID in logical volume descriptor: '%.23s'", pLvd->idDomain.achIdentifier);
4591
4592	if ( pLvd->ContentsUse.FileSetDescriptor.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED
4593	\|\| pLvd->ContentsUse.FileSetDescriptor.cb == 0
4594	\|\| pLvd->ContentsUse.FileSetDescriptor.Location.uPartitionNo >= cPartMaps)
4595	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_FILE_SET_DESC_LOCATION,
4596	"Malformed file set descriptor location (type=%u cb=%#x part=%#x)",
4597	pLvd->ContentsUse.FileSetDescriptor.uType,
4598	pLvd->ContentsUse.FileSetDescriptor.cb,
4599	pLvd->ContentsUse.FileSetDescriptor.Location.uPartitionNo);
4600
4601	bool fLvdHaveVolId = !ASMMemIsZero(pLvd->achLogicalVolumeID, sizeof(pLvd->achLogicalVolumeID));
4602	if ( fLvdHaveVolId
4603	&& !UDF_IS_CHAR_SET_OSTA(&pLvd->DescCharSet))
4604	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_DESC_CHAR_SET,
4605	"Logical volume ID is not using OSTA compressed unicode");
4606
4607	/*
4608	* We can ignore much, if not all of the primary volume descriptor.
4609	*/
4610
4611	/*
4612	* We're good. So copy over the data.
4613	*/
4614	pThis->Udf.VolInfo.FileSetDescriptor = pLvd->ContentsUse.FileSetDescriptor;
4615	pThis->Udf.VolInfo.cbBlock = pLvd->cbLogicalBlock;
4616	pThis->Udf.VolInfo.cShiftBlock = 9;
4617	while (pThis->Udf.VolInfo.cbBlock != RT_BIT_32(pThis->Udf.VolInfo.cShiftBlock))
4618	pThis->Udf.VolInfo.cShiftBlock++;
4619	pThis->Udf.VolInfo.fFlags = pPvd->fFlags;
4620	pThis->Udf.VolInfo.cPartitions = cPartMaps;
4621	pThis->Udf.VolInfo.paPartitions = paPartMaps;
4622	pInfo->paPartMaps = NULL;
4623	if (fLvdHaveVolId)
4624	memcpy(pThis->Udf.VolInfo.achLogicalVolumeID, pLvd->achLogicalVolumeID, sizeof(pThis->Udf.VolInfo.achLogicalVolumeID));
4625	else
4626	RT_ZERO(pThis->Udf.VolInfo.achLogicalVolumeID);
4627
4628	return VINF_SUCCESS;
4629	}
4630
4631
4632	/**
4633	* Processes a primary volume descriptor in the VDS (UDF).
4634	*
4635	* @returns IPRT status code.
4636	* @param pInfo Where we gather descriptor information.
4637	* @param pDesc The descriptor.
4638	* @param pErrInfo Where to return extended error information.
4639	*/
4640	//cmd: kmk VBoxRT && kmk_redirect -E VBOX_LOG_DEST="nofile stderr" -E VBOX_LOG="rt_fs=~0" -E VBOX_LOG_FLAGS="unbuffered enabled" -- e:\vbox\svn\trunk\out\win.amd64\debug\bin\tools\RTLs.exe :iprtvfs:file(open,d:\Downloads\en_windows_10_enterprise_version_1703_updated_march_2017_x64_dvd_10189290.iso,r):vfs(isofs):/ -la
4641	static int rtFsIsoVolProcessUdfPrimaryVolDesc(PRTFSISOVDSINFO pInfo, PCUDFPRIMARYVOLUMEDESC pDesc, PRTERRINFO pErrInfo)
4642	{
4643	#ifdef LOG_ENABLED
4644	Log(("ISO/UDF: Primary volume descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4645	if (LogIs2Enabled())
4646	{
4647	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4648	UDF_LOG2_MEMBER(pDesc, "#010RX32", uPrimaryVolumeDescNo);
4649	UDF_LOG2_MEMBER_DSTRING(pDesc, achVolumeID);
4650	UDF_LOG2_MEMBER(pDesc, "#06RX16", uVolumeSeqNo);
4651	UDF_LOG2_MEMBER(pDesc, "#06RX16", uVolumeSeqNo);
4652	UDF_LOG2_MEMBER(pDesc, "#06RX16", uMaxVolumeSeqNo);
4653	UDF_LOG2_MEMBER(pDesc, "#06RX16", uInterchangeLevel);
4654	UDF_LOG2_MEMBER(pDesc, "#06RX16", uMaxInterchangeLevel);
4655	UDF_LOG2_MEMBER(pDesc, "#010RX32", fCharacterSets);
4656	UDF_LOG2_MEMBER(pDesc, "#010RX32", fMaxCharacterSets);
4657	UDF_LOG2_MEMBER_DSTRING(pDesc, achVolumeSetID);
4658	UDF_LOG2_MEMBER_CHARSPEC(pDesc, DescCharSet);
4659	UDF_LOG2_MEMBER_CHARSPEC(pDesc, ExplanatoryCharSet);
4660	UDF_LOG2_MEMBER_EXTENTAD(pDesc, VolumeAbstract);
4661	UDF_LOG2_MEMBER_EXTENTAD(pDesc, VolumeCopyrightNotice);
4662	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idApplication);
4663	UDF_LOG2_MEMBER_TIMESTAMP(pDesc, RecordingTimestamp);
4664	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4665	if (!ASMMemIsZero(&pDesc->abImplementationUse, sizeof(pDesc->abImplementationUse)))
4666	Log2(("ISO/UDF: %-32s %.64Rhxs\n", "abReserved[64]:", &pDesc->abImplementationUse[0]));
4667	UDF_LOG2_MEMBER(pDesc, "#010RX32", offPredecessorVolDescSeq);
4668	UDF_LOG2_MEMBER(pDesc, "#06RX16", fFlags);
4669	if (!ASMMemIsZero(&pDesc->abReserved, sizeof(pDesc->abReserved)))
4670	Log2(("ISO/UDF: %-32s %.22Rhxs\n", "abReserved[22]:", &pDesc->abReserved[0]));
4671	}
4672	#endif
4673
4674	/*
4675	* Check if this is a new revision of an existing primary volume descriptor.
4676	*/
4677	PUDFPRIMARYVOLUMEDESC pEndianConvert = NULL;
4678	uint32_t i = pInfo->cPrimaryVols;
4679	while (i--> 0)
4680	{
4681	if ( memcmp(pDesc->achVolumeID, pInfo->apPrimaryVols[i]->achVolumeID, sizeof(pDesc->achVolumeID)) == 0
4682	&& memcmp(&pDesc->DescCharSet, &pInfo->apPrimaryVols[i]->DescCharSet, sizeof(pDesc->DescCharSet)) == 0)
4683	{
4684	if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apPrimaryVols[i]->uVolumeDescSeqNo)
4685	{
4686	Log(("ISO/UDF: Primary descriptor prevails over previous! (%u >= %u)\n",
4687	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4688	pEndianConvert = pInfo->apPrimaryVols[i];
4689	memcpy(pEndianConvert, pDesc, sizeof(*pDesc));
4690	}
4691	else
4692	Log(("ISO/UDF: Primary descriptor has lower sequence number than the previous! (%u < %u)\n",
4693	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4694	break;
4695	}
4696	}
4697	if (i >= pInfo->cPrimaryVols)
4698	{
4699	/*
4700	* It wasn't. Append it.
4701	*/
4702	i = pInfo->cPrimaryVols;
4703	if (i < RT_ELEMENTS(pInfo->apPrimaryVols))
4704	{
4705	pInfo->apPrimaryVols[i] = pEndianConvert = (PUDFPRIMARYVOLUMEDESC)RTMemDup(pDesc, sizeof(*pDesc));
4706	if (pEndianConvert)
4707	pInfo->cPrimaryVols = i + 1;
4708	else
4709	return VERR_NO_MEMORY;
4710	Log2(("ISO/UDF: ++New primary descriptor.\n"));
4711	}
4712	else
4713	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_PVDS, "Encountered too many primary volume descriptors");
4714	}
4715
4716	#ifdef RT_BIG_ENDIAN
4717	/*
4718	* Do endian conversion of the descriptor.
4719	*/
4720	if (pEndianConvert)
4721	{
4722	AssertFailed();
4723	}
4724	#else
4725	RT_NOREF(pEndianConvert);
4726	#endif
4727	return VINF_SUCCESS;
4728	}
4729
4730
4731	/**
4732	* Processes an logical volume descriptor in the VDS (UDF).
4733	*
4734	* @returns IPRT status code.
4735	* @param pInfo Where we gather descriptor information.
4736	* @param pDesc The descriptor.
4737	* @param cbSector The sector size (UDF defines the logical and physical
4738	* sector size to be the same).
4739	* @param pErrInfo Where to return extended error information.
4740	*/
4741	static int rtFsIsoVolProcessUdfLogicalVolumeDesc(PRTFSISOVDSINFO pInfo, PCUDFLOGICALVOLUMEDESC pDesc,
4742	uint32_t cbSector, PRTERRINFO pErrInfo)
4743	{
4744	#ifdef LOG_ENABLED
4745	Log(("ISO/UDF: Logical volume descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4746	if (LogIs2Enabled())
4747	{
4748	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4749	UDF_LOG2_MEMBER_CHARSPEC(pDesc, DescCharSet);
4750	UDF_LOG2_MEMBER_DSTRING(pDesc, achLogicalVolumeID);
4751	UDF_LOG2_MEMBER(pDesc, "#010RX32", cbLogicalBlock);
4752	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idDomain);
4753	if (UDF_ENTITY_ID_EQUALS(&pDesc->idDomain, UDF_ENTITY_ID_LVD_DOMAIN))
4754	UDF_LOG2_MEMBER_LONGAD(pDesc, ContentsUse.FileSetDescriptor);
4755	else if (!ASMMemIsZero(&pDesc->ContentsUse.ab[0], sizeof(pDesc->ContentsUse.ab)))
4756	Log2(("ISO/UDF: %-32s %.16Rhxs\n", "ContentsUse.ab[16]:", &pDesc->ContentsUse.ab[0]));
4757	UDF_LOG2_MEMBER(pDesc, "#010RX32", cbMapTable);
4758	UDF_LOG2_MEMBER(pDesc, "#010RX32", cPartitionMaps);
4759	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4760	if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab)))
4761	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ImplementationUse.ab[128]:", &pDesc->ImplementationUse.ab[0]));
4762	UDF_LOG2_MEMBER_EXTENTAD(pDesc, IntegritySeqExtent);
4763	if (pDesc->cbMapTable)
4764	{
4765	Log2(("ISO/UDF: %-32s\n", "abPartitionMaps"));
4766	uint32_t iMap = 0;
4767	uint32_t off = 0;
4768	while (off + sizeof(UDFPARTMAPHDR) <= pDesc->cbMapTable)
4769	{
4770	PCUDFPARTMAPHDR pHdr = (PCUDFPARTMAPHDR)&pDesc->abPartitionMaps[off];
4771	Log2(("ISO/UDF: %02u @ %#05x: type %u, length %u\n", iMap, off, pHdr->bType, pHdr->cb));
4772	if (off + pHdr->cb > pDesc->cbMapTable)
4773	{
4774	Log2(("ISO/UDF: BAD! Entry is %d bytes too long!\n", off + pHdr->cb - pDesc->cbMapTable));
4775	break;
4776	}
4777	if (pHdr->bType == 1)
4778	{
4779	PCUDFPARTMAPTYPE1 pType1 = (PCUDFPARTMAPTYPE1)pHdr;
4780	UDF_LOG2_MEMBER_EX(pType1, "#06RX16", uVolumeSeqNo, 5);
4781	UDF_LOG2_MEMBER_EX(pType1, "#06RX16", uPartitionNo, 5);
4782	}
4783	else if (pHdr->bType == 2)
4784	{
4785	PCUDFPARTMAPTYPE2 pType2 = (PCUDFPARTMAPTYPE2)pHdr;
4786	UDF_LOG2_MEMBER_ENTITY_ID_EX(pType2, idPartitionType, 5);
4787	UDF_LOG2_MEMBER_EX(pType2, "#06RX16", uVolumeSeqNo, 5);
4788	UDF_LOG2_MEMBER_EX(pType2, "#06RX16", uPartitionNo, 5);
4789	if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_SPM_PARTITION_TYPE))
4790	{
4791	UDF_LOG2_MEMBER_EX(&pType2->u, "#06RX16", Spm.cBlocksPerPacket, 5);
4792	UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Spm.cSparingTables, 5);
4793	if (pType2->u.Spm.bReserved2)
4794	UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Spm.bReserved2, 5);
4795	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.cbSparingTable, 5);
4796	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[0], 5);
4797	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[1], 5);
4798	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[2], 5);
4799	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[3], 5);
4800	}
4801	else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_MPM_PARTITION_TYPE))
4802	{
4803	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataFile, 5);
4804	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataMirrorFile, 5);
4805	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataBitmapFile, 5);
4806	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.cBlocksAllocationUnit, 5);
4807	UDF_LOG2_MEMBER_EX(&pType2->u, "#06RX16", Mpm.cBlocksAlignmentUnit, 5);
4808	UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Mpm.fFlags, 5);
4809	if (!ASMMemIsZero(pType2->u.Mpm.abReserved2, sizeof(pType2->u.Mpm.abReserved2)))
4810	UDF_LOG2_MEMBER_EX(&pType2->u, ".5Rhxs", Mpm.abReserved2, 5);
4811	}
4812	}
4813	else
4814	Log2(("ISO/UDF: BAD! Unknown type!\n"));
4815
4816	/* advance */
4817	off += pHdr->cb;
4818	iMap++;
4819	}
4820	}
4821	}
4822	#endif
4823
4824	/*
4825	* Check if this is a newer revision of an existing primary volume descriptor.
4826	*/
4827	size_t cbDesc = (size_t)pDesc->cbMapTable + RT_UOFFSETOF(UDFLOGICALVOLUMEDESC, abPartitionMaps);
4828	if ( pDesc->cbMapTable >= (UINT32_MAX >> 1)
4829	\|\| cbDesc > cbSector)
4830	{
4831	Log(("ISO/UDF: Logical volume descriptor is too big: %#zx (cbSector=%#x)\n", cbDesc, cbSector));
4832	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TOO_BIT_PARTMAP_IN_LVD,
4833	"Logical volume descriptor is too big: %#zx (cbSector=%#x)\n", cbDesc, cbSector);
4834	}
4835
4836	PUDFLOGICALVOLUMEDESC pEndianConvert = NULL;
4837	uint32_t i = pInfo->cLogicalVols;
4838	while (i--> 0)
4839	if ( memcmp(pDesc->achLogicalVolumeID, pInfo->apLogicalVols[i]->achLogicalVolumeID,
4840	sizeof(pDesc->achLogicalVolumeID)) == 0
4841	&& memcmp(&pDesc->DescCharSet, &pInfo->apLogicalVols[i]->DescCharSet,
4842	sizeof(pDesc->DescCharSet)) == 0)
4843	{
4844	if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apLogicalVols[i]->uVolumeDescSeqNo)
4845	{
4846	Log(("ISO/UDF: Logical descriptor prevails over previous! (%u >= %u)\n",
4847	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apLogicalVols[i]->uVolumeDescSeqNo));
4848	pEndianConvert = (PUDFLOGICALVOLUMEDESC)RTMemDup(pDesc, cbDesc);
4849	if (!pEndianConvert)
4850	return VERR_NO_MEMORY;
4851	RTMemFree(pInfo->apLogicalVols[i]);
4852	pInfo->apLogicalVols[i] = pEndianConvert;
4853	}
4854	else
4855	Log(("ISO/UDF: Logical descriptor has lower sequence number than the previous! (%u >= %u)\n",
4856	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apLogicalVols[i]->uVolumeDescSeqNo));
4857	break;
4858	}
4859	if (i >= pInfo->cLogicalVols)
4860	{
4861	/*
4862	* It wasn't. Append it.
4863	*/
4864	i = pInfo->cLogicalVols;
4865	if (i < RT_ELEMENTS(pInfo->apLogicalVols))
4866	{
4867	pInfo->apLogicalVols[i] = pEndianConvert = (PUDFLOGICALVOLUMEDESC)RTMemDup(pDesc, cbDesc);
4868	if (pEndianConvert)
4869	pInfo->cLogicalVols = i + 1;
4870	else
4871	return VERR_NO_MEMORY;
4872	Log2(("ISO/UDF: ++New logical volume descriptor.\n"));
4873	}
4874	else
4875	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_LVDS, "Too many logical volume descriptors");
4876	}
4877
4878	#ifdef RT_BIG_ENDIAN
4879	/*
4880	* Do endian conversion of the descriptor.
4881	*/
4882	if (pEndianConvert)
4883	{
4884	AssertFailed();
4885	}
4886	#else
4887	RT_NOREF(pEndianConvert);
4888	#endif
4889	return VINF_SUCCESS;
4890	}
4891
4892
4893	/**
4894	* Processes an partition descriptor in the VDS (UDF).
4895	*
4896	* @returns IPRT status code.
4897	* @param pInfo Where we gather descriptor information.
4898	* @param pDesc The descriptor.
4899	* @param pErrInfo Where to return extended error information.
4900	*/
4901	static int rtFsIsoVolProcessUdfPartitionDesc(PRTFSISOVDSINFO pInfo, PCUDFPARTITIONDESC pDesc, PRTERRINFO pErrInfo)
4902	{
4903	#ifdef LOG_ENABLED
4904	Log(("ISO/UDF: Partition descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4905	if (LogIs2Enabled())
4906	{
4907	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4908	UDF_LOG2_MEMBER(pDesc, "#06RX16", fFlags);
4909	UDF_LOG2_MEMBER(pDesc, "#06RX16", uPartitionNo);
4910	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, PartitionContents);
4911	if (UDF_ENTITY_ID_EQUALS(&pDesc->PartitionContents, UDF_ENTITY_ID_PD_PARTITION_CONTENTS_UDF))
4912	{
4913	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.UnallocatedSpaceTable);
4914	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.UnallocatedSpaceBitmap);
4915	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.PartitionIntegrityTable);
4916	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.FreedSpaceTable);
4917	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.FreedSpaceBitmap);
4918	if (!ASMMemIsZero(&pDesc->ContentsUse.Hdr.abReserved[0], sizeof(pDesc->ContentsUse.Hdr.abReserved)))
4919	Log2(("ISO/UDF: %-32s\n%.88RhxD\n", "Hdr.abReserved[88]:", &pDesc->ContentsUse.Hdr.abReserved[0]));
4920	}
4921	else if (!ASMMemIsZero(&pDesc->ContentsUse.ab[0], sizeof(pDesc->ContentsUse.ab)))
4922	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ContentsUse.ab[128]:", &pDesc->ContentsUse.ab[0]));
4923	UDF_LOG2_MEMBER(pDesc, "#010RX32", uAccessType);
4924	UDF_LOG2_MEMBER(pDesc, "#010RX32", offLocation);
4925	UDF_LOG2_MEMBER(pDesc, "#010RX32", cSectors);
4926	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4927	if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab)))
4928	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ImplementationUse.ab[128]:", &pDesc->ImplementationUse.ab[0]));
4929
4930	if (!ASMMemIsZero(&pDesc->abReserved[0], sizeof(pDesc->abReserved)))
4931	Log2(("ISO/UDF: %-32s\n%.156RhxD\n", "ImplementationUse.ab[156]:", &pDesc->abReserved[0]));
4932	}
4933	#endif
4934
4935	/*
4936	* Check if this is a newer revision of an existing primary volume descriptor.
4937	*/
4938	PUDFPARTITIONDESC pEndianConvert = NULL;
4939	uint32_t i = pInfo->cPartitions;
4940	while (i--> 0)
4941	if (pDesc->uPartitionNo == pInfo->apPartitions[i]->uPartitionNo)
4942	{
4943	if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apPartitions[i]->uVolumeDescSeqNo)
4944	{
4945	Log(("ISO/UDF: Partition descriptor for part %#u prevails over previous! (%u >= %u)\n",
4946	pDesc->uPartitionNo, RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4947	pEndianConvert = pInfo->apPartitions[i];
4948	memcpy(pEndianConvert, pDesc, sizeof(*pDesc));
4949	}
4950	else
4951	Log(("ISO/UDF: Partition descriptor for part %#u has a lower sequence number than the previous! (%u < %u)\n",
4952	pDesc->uPartitionNo, RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4953	break;
4954	}
4955	if (i >= pInfo->cPartitions)
4956	{
4957	/*
4958	* It wasn't. Append it.
4959	*/
4960	i = pInfo->cPartitions;
4961	if (i < RT_ELEMENTS(pInfo->apPartitions))
4962	{
4963	pInfo->apPartitions[i] = pEndianConvert = (PUDFPARTITIONDESC)RTMemDup(pDesc, sizeof(*pDesc));
4964	if (pEndianConvert)
4965	pInfo->cPartitions = i + 1;
4966	else
4967	return VERR_NO_MEMORY;
4968	Log2(("ISO/UDF: ++New partition descriptor.\n"));
4969	}
4970	else
4971	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_PDS, "Too many physical volume descriptors");
4972	}
4973
4974	#ifdef RT_BIG_ENDIAN
4975	/*
4976	* Do endian conversion of the descriptor.
4977	*/
4978	if (pEndianConvert)
4979	{
4980	AssertFailed();
4981	}
4982	#else
4983	RT_NOREF(pEndianConvert);
4984	#endif
4985	return VINF_SUCCESS;
4986	}
4987
4988
4989	/**
4990	* Processes an implementation use descriptor in the VDS (UDF).
4991	*
4992	* @returns IPRT status code.
4993	* @param pInfo Where we gather descriptor information.
4994	* @param pDesc The descriptor.
4995	* @param pErrInfo Where to return extended error information.
4996	*/
4997	static int rtFsIsoVolProcessUdfImplUseVolDesc(PRTFSISOVDSINFO pInfo, PCUDFIMPLEMENTATIONUSEVOLUMEDESC pDesc, PRTERRINFO pErrInfo)
4998	{
4999	#ifdef LOG_ENABLED
5000	Log(("ISO/UDF: Implementation use volume descriptor at sector %#RX32\n", pDesc->Tag.offTag));
5001	if (LogIs2Enabled())
5002	{
5003	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
5004	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
5005	if (UDF_ENTITY_ID_EQUALS(&pDesc->idImplementation, UDF_ENTITY_ID_IUVD_IMPLEMENTATION))
5006	{
5007	UDF_LOG2_MEMBER_CHARSPEC(&pDesc->ImplementationUse, Lvi.Charset);
5008	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achVolumeID);
5009	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo1);
5010	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo2);
5011	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo3);
5012	UDF_LOG2_MEMBER_ENTITY_ID(&pDesc->ImplementationUse, Lvi.idImplementation);
5013	if (!ASMMemIsZero(&pDesc->ImplementationUse.Lvi.abUse[0], sizeof(pDesc->ImplementationUse.Lvi.abUse)))
5014	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "Lvi.abUse[128]:", &pDesc->ImplementationUse.Lvi.abUse[0]));
5015	}
5016	else if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab)))
5017	Log2(("ISO/UDF: %-32s\n%.460RhxD\n", "ImplementationUse.ab[460]:", &pDesc->ImplementationUse.ab[0]));
5018	}
5019	#endif
5020
5021	RT_NOREF(pInfo, pDesc, pErrInfo);
5022	return VINF_SUCCESS;
5023	}
5024
5025
5026
5027	typedef struct RTFSISOSEENSEQENCES
5028	{
5029	/** Number of sequences we've seen thus far. */
5030	uint32_t cSequences;
5031	/** The per sequence data. */
5032	struct
5033	{
5034	uint64_t off; /*< Byte offset of the sequence. /
5035	uint32_t cb; /*< Size of the sequence. /
5036	} aSequences[8];
5037	} RTFSISOSEENSEQENCES;
5038	typedef RTFSISOSEENSEQENCES *PRTFSISOSEENSEQENCES;
5039
5040
5041
5042	/**
5043	* Process a VDS sequence, recursively dealing with volume descriptor pointers.
5044	*
5045	* This function only gathers information from the sequence, handling the
5046	* prevailing descriptor fun.
5047	*
5048	* @returns IPRT status code.
5049	* @param pThis The instance.
5050	* @param pInfo Where to store info from the VDS sequence.
5051	* @param offSeq The byte offset of the sequence.
5052	* @param cbSeq The length of the sequence.
5053	* @param pbBuf Read buffer.
5054	* @param cbBuf Size of the read buffer. This is at least one
5055	* sector big.
5056	* @param cNestings The VDS nesting depth.
5057	* @param pErrInfo Where to return extended error info.
5058	*/
5059	static int rtFsIsoVolReadAndProcessUdfVdsSeq(PRTFSISOVOL pThis, PRTFSISOVDSINFO pInfo, uint64_t offSeq, uint32_t cbSeq,
5060	uint8_t *pbBuf, size_t cbBuf, uint32_t cNestings, PRTERRINFO pErrInfo)
5061	{
5062	AssertReturn(cbBuf >= pThis->cbSector, VERR_INTERNAL_ERROR);
5063
5064	/*
5065	* Check nesting depth.
5066	*/
5067	if (cNestings > 5)
5068	return RTERRINFO_LOG_SET(pErrInfo, VERR_TOO_MUCH_DATA, "The volume descriptor sequence (VDS) is nested too deeply.");
5069
5070
5071	/*
5072	* Do the processing sector by sector to keep things simple.
5073	*/
5074	uint32_t offInSeq = 0;
5075	while (offInSeq < cbSeq)
5076	{
5077	int rc;
5078
5079	/*
5080	* Read the next sector. Zero pad if less that a sector.
5081	*/
5082	Assert((offInSeq & (pThis->cbSector - 1)) == 0);
5083	rc = RTVfsFileReadAt(pThis->hVfsBacking, offSeq + offInSeq, pbBuf, pThis->cbSector, NULL);
5084	if (RT_FAILURE(rc))
5085	return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Error reading VDS content at %RX64 (LB %#x): %Rrc",
5086	offSeq + offInSeq, pThis->cbSector, rc);
5087	if (cbSeq - offInSeq < pThis->cbSector)
5088	memset(&pbBuf[cbSeq - offInSeq], 0, pThis->cbSector - (cbSeq - offInSeq));
5089
5090	/*
5091	* Check tag.
5092	*/
5093	PCUDFTAG pTag = (PCUDFTAG)pbBuf;
5094	rc = rtFsIsoVolValidateUdfDescTagAndCrc(pTag, pThis->cbSector, UINT16_MAX, (offSeq + offInSeq) / pThis->cbSector, pErrInfo);
5095	if ( RT_SUCCESS(rc)
5096	\|\| ( rc == VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC
5097	&& ( pTag->idTag == UDF_TAG_ID_LOGICAL_VOLUME_INTEGRITY_DESC
5098	\|\| pTag->idTag == UDF_TAG_ID_LOGICAL_VOLUME_DESC
5099	\|\| pTag->idTag == UDF_TAG_ID_UNALLOCATED_SPACE_DESC
5100	)
5101	)
5102	)
5103	{
5104	switch (pTag->idTag)
5105	{
5106	case UDF_TAG_ID_PRIMARY_VOL_DESC:
5107	rc = rtFsIsoVolProcessUdfPrimaryVolDesc(pInfo, (PCUDFPRIMARYVOLUMEDESC)pTag, pErrInfo);
5108	break;
5109
5110	case UDF_TAG_ID_IMPLEMENTATION_USE_VOLUME_DESC:
5111	rc = rtFsIsoVolProcessUdfImplUseVolDesc(pInfo, (PCUDFIMPLEMENTATIONUSEVOLUMEDESC)pTag, pErrInfo);
5112	break;
5113
5114	case UDF_TAG_ID_PARTITION_DESC:
5115	rc = rtFsIsoVolProcessUdfPartitionDesc(pInfo, (PCUDFPARTITIONDESC)pTag, pErrInfo);
5116	break;
5117
5118	case UDF_TAG_ID_LOGICAL_VOLUME_DESC:
5119	if (rc != VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC)
5120	rc = rtFsIsoVolProcessUdfLogicalVolumeDesc(pInfo, (PCUDFLOGICALVOLUMEDESC)pTag,
5121	pThis->cbSector, pErrInfo);
5122	else
5123	rc = VERR_ISOFS_TOO_BIT_PARTMAP_IN_LVD;
5124	break;
5125
5126	case UDF_TAG_ID_LOGICAL_VOLUME_INTEGRITY_DESC:
5127	Log(("ISO/UDF: Ignoring logical volume integrity descriptor at offset %#RX64.\n", offSeq + offInSeq));
5128	rc = VINF_SUCCESS;
5129	break;
5130
5131	case UDF_TAG_ID_UNALLOCATED_SPACE_DESC:
5132	Log(("ISO/UDF: Ignoring unallocated space descriptor at offset %#RX64.\n", offSeq + offInSeq));
5133	rc = VINF_SUCCESS;
5134	break;
5135
5136	case UDF_TAG_ID_ANCHOR_VOLUME_DESC_PTR:
5137	Log(("ISO/UDF: Ignoring AVDP in VDS (at offset %#RX64).\n", offSeq + offInSeq));
5138	rc = VINF_SUCCESS;
5139	break;
5140
5141	case UDF_TAG_ID_VOLUME_DESC_PTR:
5142	{
5143	PCUDFVOLUMEDESCPTR pVdp = (PCUDFVOLUMEDESCPTR)pTag;
5144	Log(("ISO/UDF: Processing volume descriptor pointer at offset %#RX64: %#x LB %#x (seq %#x); cNestings=%d\n",
5145	offSeq + offInSeq, pVdp->NextVolumeDescSeq.off, pVdp->NextVolumeDescSeq.cb,
5146	pVdp->uVolumeDescSeqNo, cNestings));
5147	rc = rtFsIsoVolReadAndProcessUdfVdsSeq(pThis, pInfo, (uint64_t)pVdp->NextVolumeDescSeq.off * pThis->cbSector,
5148	pVdp->NextVolumeDescSeq.cb, pbBuf, cbBuf, cNestings + 1, pErrInfo);
5149	break;
5150	}
5151
5152	case UDF_TAG_ID_TERMINATING_DESC:
5153	Log(("ISO/UDF: Terminating descriptor at offset %#RX64\n", offSeq + offInSeq));
5154	return VINF_SUCCESS;
5155
5156	default:
5157	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNEXPECTED_VDS_DESC,
5158	"Unexpected/unknown VDS descriptor %#x at byte offset %#RX64",
5159	pThis->cbSector, offSeq + offInSeq);
5160	}
5161	if (RT_FAILURE(rc))
5162	return rc;
5163	}
5164	/* The descriptor sequence is usually zero padded to 16 sectors. Just
5165	ignore zero descriptors. */
5166	else if (rc != VERR_ISOFS_TAG_IS_ALL_ZEROS)
5167	return rc;
5168
5169	/*
5170	* Advance.
5171	*/
5172	offInSeq += pThis->cbSector;
5173	}
5174
5175	return VINF_SUCCESS;
5176	}
5177
5178
5179
5180	/**
5181	* Processes a volume descriptor sequence (VDS).
5182	*
5183	* @returns IPRT status code.
5184	* @param pThis The instance.
5185	* @param offSeq The byte offset of the sequence.
5186	* @param cbSeq The length of the sequence.
5187	* @param pSeenSequences Structure where to keep track of VDSes we've already
5188	* processed, to avoid redoing one that we don't
5189	* understand.
5190	* @param pbBuf Read buffer.
5191	* @param cbBuf Size of the read buffer. This is at least one
5192	* sector big.
5193	* @param pErrInfo Where to report extended error information.
5194	*/
5195	static int rtFsIsoVolReadAndProcessUdfVds(PRTFSISOVOL pThis, uint64_t offSeq, uint32_t cbSeq,
5196	PRTFSISOSEENSEQENCES pSeenSequences, uint8_t *pbBuf, size_t cbBuf,
5197	PRTERRINFO pErrInfo)
5198	{
5199	/*
5200	* Skip if already seen.
5201	*/
5202	uint32_t i = pSeenSequences->cSequences;
5203	while (i-- > 0)
5204	if ( pSeenSequences->aSequences[i].off == offSeq
5205	&& pSeenSequences->aSequences[i].cb == cbSeq)
5206	return VERR_NOT_FOUND;
5207
5208	/* Not seen, so add it. */
5209	Assert(pSeenSequences->cSequences + 1 <= RT_ELEMENTS(pSeenSequences->aSequences));
5210	pSeenSequences->aSequences[pSeenSequences->cSequences].cb = cbSeq;
5211	pSeenSequences->aSequences[pSeenSequences->cSequences].off = offSeq;
5212	pSeenSequences->cSequences++;
5213
5214	LogFlow(("ISO/UDF: Processing anchor volume descriptor sequence at offset %#RX64 LB %#RX32\n", offSeq, cbSeq));
5215
5216	/*
5217	* Gather relevant descriptor info from the VDS then process it and on
5218	* success copy it into the instance.
5219	*
5220	* The processing has to be done in a different function because there may
5221	* be links to sub-sequences that needs to be processed. We do this by
5222	* recursing and check that we don't go to deep.
5223	*/
5224	RTFSISOVDSINFO Info;
5225	RT_ZERO(Info);
5226	int rc = rtFsIsoVolReadAndProcessUdfVdsSeq(pThis, &Info, offSeq, cbSeq, pbBuf, cbBuf, 0, pErrInfo);
5227	if (RT_SUCCESS(rc))
5228	{
5229	rc = rtFsIsoVolProcessUdfVdsSeqInfo(pThis, &Info, pErrInfo);
5230	if (RT_SUCCESS(rc))
5231	rc = rtFsIsoVolProcessUdfFileSetDescs(pThis, pbBuf, cbBuf, pErrInfo);
5232	}
5233
5234	/*
5235	* Clean up info.
5236	*/
5237	i = Info.cPrimaryVols;
5238	while (i-- > 0)
5239	RTMemFree(Info.apPrimaryVols[i]);
5240
5241	i = Info.cLogicalVols;
5242	while (i-- > 0)
5243	RTMemFree(Info.apLogicalVols[i]);
5244
5245	i = Info.cPartitions;
5246	while (i-- > 0)
5247	RTMemFree(Info.apPartitions[i]);
5248
5249	RTMemFree(Info.paPartMaps);
5250
5251	return rc;
5252	}
5253
5254
5255	static int rtFsIsoVolReadAndHandleUdfAvdp(PRTFSISOVOL pThis, uint64_t offAvdp, uint8_t *pbBuf, size_t cbBuf,
5256	PRTFSISOSEENSEQENCES pSeenSequences, PRTERRINFO pErrInfo)
5257	{
5258	/*
5259	* Try read the descriptor and validate its tag.
5260	*/
5261	PUDFANCHORVOLUMEDESCPTR pAvdp = (PUDFANCHORVOLUMEDESCPTR)pbBuf;
5262	size_t cbAvdpRead = RT_MIN(pThis->cbSector, cbBuf);
5263	int rc = RTVfsFileReadAt(pThis->hVfsBacking, offAvdp, pAvdp, cbAvdpRead, NULL);
5264	if (RT_SUCCESS(rc))
5265	{
5266	rc = rtFsIsoVolValidateUdfDescTag(&pAvdp->Tag, UDF_TAG_ID_ANCHOR_VOLUME_DESC_PTR, offAvdp / pThis->cbSector, pErrInfo);
5267	if (RT_SUCCESS(rc))
5268	{
5269	Log2(("ISO/UDF: AVDP: MainVolumeDescSeq=%#RX32 LB %#RX32, ReserveVolumeDescSeq=%#RX32 LB %#RX32\n",
5270	pAvdp->MainVolumeDescSeq.off, pAvdp->MainVolumeDescSeq.cb,
5271	pAvdp->ReserveVolumeDescSeq.off, pAvdp->ReserveVolumeDescSeq.cb));
5272
5273	/*
5274	* Try the main sequence if it looks sane.
5275	*/
5276	UDFEXTENTAD const ReserveVolumeDescSeq = pAvdp->ReserveVolumeDescSeq;
5277	if ( pAvdp->MainVolumeDescSeq.off < pThis->cBackingSectors
5278	&& (uint64_t)pAvdp->MainVolumeDescSeq.off
5279	+ (pAvdp->MainVolumeDescSeq.cb + pThis->cbSector - 1) / pThis->cbSector
5280	<= pThis->cBackingSectors)
5281	{
5282	rc = rtFsIsoVolReadAndProcessUdfVds(pThis, (uint64_t)pAvdp->MainVolumeDescSeq.off * pThis->cbSector,
5283	pAvdp->MainVolumeDescSeq.cb, pSeenSequences, pbBuf, cbBuf, pErrInfo);
5284	if (RT_SUCCESS(rc))
5285	return rc;
5286	}
5287	else
5288	rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_FOUND,
5289	"MainVolumeDescSeq is out of bounds: sector %#RX32 LB %#RX32 bytes, image is %#RX64 sectors",
5290	pAvdp->MainVolumeDescSeq.off, pAvdp->MainVolumeDescSeq.cb, pThis->cBackingSectors);
5291	if (ReserveVolumeDescSeq.cb > 0)
5292	{
5293	if ( ReserveVolumeDescSeq.off < pThis->cBackingSectors
5294	&& (uint64_t)ReserveVolumeDescSeq.off
5295	+ (ReserveVolumeDescSeq.cb + pThis->cbSector - 1) / pThis->cbSector
5296	<= pThis->cBackingSectors)
5297	{
5298	rc = rtFsIsoVolReadAndProcessUdfVds(pThis, (uint64_t)ReserveVolumeDescSeq.off * pThis->cbSector,
5299	ReserveVolumeDescSeq.cb, pSeenSequences, pbBuf, cbBuf, pErrInfo);
5300	if (RT_SUCCESS(rc))
5301	return rc;
5302	}
5303	else if (RT_SUCCESS(rc))
5304	rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_FOUND,
5305	"ReserveVolumeDescSeq is out of bounds: sector %#RX32 LB %#RX32 bytes, image is %#RX64 sectors",
5306	ReserveVolumeDescSeq.off, ReserveVolumeDescSeq.cb, pThis->cBackingSectors);
5307	}
5308	}
5309	}
5310	else
5311	rc = RTERRINFO_LOG_SET_F(pErrInfo, rc,
5312	"Error reading sector at offset %#RX64 (anchor volume descriptor pointer): %Rrc", offAvdp, rc);
5313
5314	return rc;
5315	}
5316
5317
5318	/**
5319	* Goes looking for UDF when we've seens a volume recognition sequence.
5320	*
5321	* @returns IPRT status code.
5322	* @param pThis The volume instance data.
5323	* @param puUdfLevel The UDF level indicated by the VRS.
5324	* @param offUdfBootVolDesc The offset of the BOOT2 descriptor, UINT64_MAX
5325	* if not encountered.
5326	* @param pbBuf Buffer for reading into.
5327	* @param cbBuf The size of the buffer. At least one sector.
5328	* @param pErrInfo Where to return extended error info.
5329	*/
5330	static int rtFsIsoVolHandleUdfDetection(PRTFSISOVOL pThis, uint8_t *puUdfLevel, uint64_t offUdfBootVolDesc,
5331	uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo)
5332	{
5333	NOREF(offUdfBootVolDesc);
5334
5335	/*
5336	* There are up to three anchor volume descriptor pointers that can give us
5337	* two different descriptor sequences each. Usually, the different AVDP
5338	* structures points to the same two sequences. The idea here is that
5339	* sectors may deteriorate and become unreadable, and we're supposed to try
5340	* out alternative sectors to get the job done. If we really took this
5341	* seriously, we could try read all sequences in parallel and use the
5342	* sectors that are good. However, we'll try keep things reasonably simple
5343	* since we'll most likely be reading from hard disks rather than optical
5344	* media.
5345	*
5346	* We keep track of which sequences we've processed so we don't try to do it
5347	* again when alternative AVDP sectors points to the same sequences.
5348	*/
5349	pThis->Udf.uLevel = *puUdfLevel;
5350	RTFSISOSEENSEQENCES SeenSequences = { 0 };
5351	int rc1 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, 256 * pThis->cbSector, pbBuf, cbBuf,
5352	&SeenSequences, pErrInfo);
5353	if (RT_SUCCESS(rc1))
5354	return rc1;
5355
5356	int rc2 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, pThis->cbBacking - 256 * pThis->cbSector,
5357	pbBuf, cbBuf, &SeenSequences, pErrInfo);
5358	if (RT_SUCCESS(rc2))
5359	return rc2;
5360
5361	int rc3 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, pThis->cbBacking - pThis->cbSector,
5362	pbBuf, cbBuf, &SeenSequences, pErrInfo);
5363	if (RT_SUCCESS(rc3))
5364	return rc3;
5365
5366	/*
5367	* Return failure if the alternatives have been excluded.
5368	*
5369	* Note! The error info won't be correct here.
5370	*/
5371	pThis->Udf.uLevel = *puUdfLevel = 0;
5372
5373	if (RTFSISO9660_F_IS_ONLY_TYPE(pThis->fFlags, RTFSISO9660_F_NO_UDF))
5374	return rc1 != VERR_NOT_FOUND ? rc1 : rc2 != VERR_NOT_FOUND ? rc2 : rc3;
5375	return VINF_SUCCESS;
5376	}
5377
5378
5379
5380	#ifdef LOG_ENABLED
5381
5382	/** Logging helper. */
5383	static size_t rtFsIsoVolGetStrippedLength(const char *pachField, size_t cchField)
5384	{
5385	while (cchField > 0 && pachField[cchField - 1] == ' ')
5386	cchField--;
5387	return cchField;
5388	}
5389
5390	/** Logging helper. */
5391	static char rtFsIsoVolGetMaybeUtf16Be(const char pachField, size_t cchField, char *pszDst, size_t cbDst)
5392	{
5393	/* Check the format by looking for zero bytes. ISO-9660 doesn't allow zeros.
5394	This doesn't have to be a UTF-16BE string. */
5395	size_t cFirstZeros = 0;
5396	size_t cSecondZeros = 0;
5397	for (size_t off = 0; off + 1 < cchField; off += 2)
5398	{
5399	cFirstZeros += pachField[off] == '\0';
5400	cSecondZeros += pachField[off + 1] == '\0';
5401	}
5402
5403	int rc = VINF_SUCCESS;
5404	char *pszTmp = &pszDst[10];
5405	size_t cchRet = 0;
5406	if (cFirstZeros > cSecondZeros)
5407	{
5408	/* UTF-16BE / UTC-2BE: */
5409	if (cchField & 1)
5410	{
5411	if (pachField[cchField - 1] == '\0' \|\| pachField[cchField - 1] == ' ')
5412	cchField--;
5413	else
5414	rc = VERR_INVALID_UTF16_ENCODING;
5415	}
5416	if (RT_SUCCESS(rc))
5417	{
5418	while ( cchField >= 2
5419	&& pachField[cchField - 1] == ' '
5420	&& pachField[cchField - 2] == '\0')
5421	cchField -= 2;
5422
5423	rc = RTUtf16BigToUtf8Ex((PCRTUTF16)pachField, cchField / sizeof(RTUTF16), &pszTmp, cbDst - 10 - 1, &cchRet);
5424	}
5425	if (RT_SUCCESS(rc))
5426	{
5427	pszDst[0] = 'U';
5428	pszDst[1] = 'T';
5429	pszDst[2] = 'F';
5430	pszDst[3] = '-';
5431	pszDst[4] = '1';
5432	pszDst[5] = '6';
5433	pszDst[6] = 'B';
5434	pszDst[7] = 'E';
5435	pszDst[8] = ':';
5436	pszDst[9] = '\'';
5437	pszDst[10 + cchRet] = '\'';
5438	pszDst[10 + cchRet + 1] = '\0';
5439	}
5440	else
5441	RTStrPrintf(pszDst, cbDst, "UTF-16BE: %.*Rhxs", cchField, pachField);
5442	}
5443	else if (cSecondZeros > 0)
5444	{
5445	/* Little endian UTF-16 / UCS-2 (ASSUMES host is little endian, sorry) */
5446	if (cchField & 1)
5447	{
5448	if (pachField[cchField - 1] == '\0' \|\| pachField[cchField - 1] == ' ')
5449	cchField--;
5450	else
5451	rc = VERR_INVALID_UTF16_ENCODING;
5452	}
5453	if (RT_SUCCESS(rc))
5454	{
5455	while ( cchField >= 2
5456	&& pachField[cchField - 1] == '\0'
5457	&& pachField[cchField - 2] == ' ')
5458	cchField -= 2;
5459
5460	rc = RTUtf16ToUtf8Ex((PCRTUTF16)pachField, cchField / sizeof(RTUTF16), &pszTmp, cbDst - 10 - 1, &cchRet);
5461	}
5462	if (RT_SUCCESS(rc))
5463	{
5464	pszDst[0] = 'U';
5465	pszDst[1] = 'T';
5466	pszDst[2] = 'F';
5467	pszDst[3] = '-';
5468	pszDst[4] = '1';
5469	pszDst[5] = '6';
5470	pszDst[6] = 'L';
5471	pszDst[7] = 'E';
5472	pszDst[8] = ':';
5473	pszDst[9] = '\'';
5474	pszDst[10 + cchRet] = '\'';
5475	pszDst[10 + cchRet + 1] = '\0';
5476	}
5477	else
5478	RTStrPrintf(pszDst, cbDst, "UTF-16LE: %.*Rhxs", cchField, pachField);
5479	}
5480	else
5481	{
5482	/* ASSUME UTF-8/ASCII. */
5483	while ( cchField > 0
5484	&& pachField[cchField - 1] == ' ')
5485	cchField--;
5486	rc = RTStrValidateEncodingEx(pachField, cchField, RTSTR_VALIDATE_ENCODING_EXACT_LENGTH);
5487	if (RT_SUCCESS(rc))
5488	RTStrPrintf(pszDst, cbDst, "UTF-8: '%.*s'", cchField, pachField);
5489	else
5490	RTStrPrintf(pszDst, cbDst, "UNK-8: %.*Rhxs", cchField, pachField);
5491	}
5492	return pszDst;
5493	}
5494
5495
5496	/**
5497	* Logs the primary or supplementary volume descriptor
5498	*
5499	* @param pVolDesc The descriptor.
5500	*/
5501	static void rtFsIsoVolLogPrimarySupplementaryVolDesc(PCISO9660SUPVOLDESC pVolDesc)
5502	{
5503	if (LogIs2Enabled())
5504	{
5505	char szTmp[384];
5506	Log2(("ISO9660: fVolumeFlags: %#RX8\n", pVolDesc->fVolumeFlags));
5507	Log2(("ISO9660: achSystemId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achSystemId, sizeof(pVolDesc->achSystemId), szTmp, sizeof(szTmp)) ));
5508	Log2(("ISO9660: achVolumeId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achVolumeId, sizeof(pVolDesc->achVolumeId), szTmp, sizeof(szTmp)) ));
5509	Log2(("ISO9660: Unused73: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->Unused73.be), RT_LE2H_U32(pVolDesc->Unused73.le)));
5510	Log2(("ISO9660: VolumeSpaceSize: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le)));
5511	Log2(("ISO9660: abEscapeSequences: '%.s'\n", rtFsIsoVolGetStrippedLength((char )pVolDesc->abEscapeSequences, sizeof(pVolDesc->abEscapeSequences)), pVolDesc->abEscapeSequences));
5512	Log2(("ISO9660: cVolumesInSet: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le)));
5513	Log2(("ISO9660: VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le)));
5514	Log2(("ISO9660: cbLogicalBlock: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le)));
5515	Log2(("ISO9660: cbPathTable: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->cbPathTable.be), RT_LE2H_U32(pVolDesc->cbPathTable.le)));
5516	Log2(("ISO9660: offTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offTypeLPathTable)));
5517	Log2(("ISO9660: offOptionalTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offOptionalTypeLPathTable)));
5518	Log2(("ISO9660: offTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offTypeMPathTable)));
5519	Log2(("ISO9660: offOptionalTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offOptionalTypeMPathTable)));
5520	Log2(("ISO9660: achVolumeSetId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achVolumeSetId, sizeof(pVolDesc->achVolumeSetId), szTmp, sizeof(szTmp)) ));
5521	Log2(("ISO9660: achPublisherId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achPublisherId, sizeof(pVolDesc->achPublisherId), szTmp, sizeof(szTmp)) ));
5522	Log2(("ISO9660: achDataPreparerId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achDataPreparerId, sizeof(pVolDesc->achDataPreparerId), szTmp, sizeof(szTmp)) ));
5523	Log2(("ISO9660: achApplicationId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achApplicationId, sizeof(pVolDesc->achApplicationId), szTmp, sizeof(szTmp)) ));
5524	Log2(("ISO9660: achCopyrightFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achCopyrightFileId, sizeof(pVolDesc->achCopyrightFileId), szTmp, sizeof(szTmp)) ));
5525	Log2(("ISO9660: achAbstractFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achAbstractFileId, sizeof(pVolDesc->achAbstractFileId), szTmp, sizeof(szTmp)) ));
5526	Log2(("ISO9660: achBibliographicFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achBibliographicFileId, sizeof(pVolDesc->achBibliographicFileId), szTmp, sizeof(szTmp)) ));
5527	Log2(("ISO9660: BirthTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5528	pVolDesc->BirthTime.achYear,
5529	pVolDesc->BirthTime.achMonth,
5530	pVolDesc->BirthTime.achDay,
5531	pVolDesc->BirthTime.achHour,
5532	pVolDesc->BirthTime.achMinute,
5533	pVolDesc->BirthTime.achSecond,
5534	pVolDesc->BirthTime.achCentisecond,
5535	pVolDesc->BirthTime.offUtc*4/60));
5536	Log2(("ISO9660: ModifyTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5537	pVolDesc->ModifyTime.achYear,
5538	pVolDesc->ModifyTime.achMonth,
5539	pVolDesc->ModifyTime.achDay,
5540	pVolDesc->ModifyTime.achHour,
5541	pVolDesc->ModifyTime.achMinute,
5542	pVolDesc->ModifyTime.achSecond,
5543	pVolDesc->ModifyTime.achCentisecond,
5544	pVolDesc->ModifyTime.offUtc*4/60));
5545	Log2(("ISO9660: ExpireTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5546	pVolDesc->ExpireTime.achYear,
5547	pVolDesc->ExpireTime.achMonth,
5548	pVolDesc->ExpireTime.achDay,
5549	pVolDesc->ExpireTime.achHour,
5550	pVolDesc->ExpireTime.achMinute,
5551	pVolDesc->ExpireTime.achSecond,
5552	pVolDesc->ExpireTime.achCentisecond,
5553	pVolDesc->ExpireTime.offUtc*4/60));
5554	Log2(("ISO9660: EffectiveTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5555	pVolDesc->EffectiveTime.achYear,
5556	pVolDesc->EffectiveTime.achMonth,
5557	pVolDesc->EffectiveTime.achDay,
5558	pVolDesc->EffectiveTime.achHour,
5559	pVolDesc->EffectiveTime.achMinute,
5560	pVolDesc->EffectiveTime.achSecond,
5561	pVolDesc->EffectiveTime.achCentisecond,
5562	pVolDesc->EffectiveTime.offUtc*4/60));
5563	Log2(("ISO9660: bFileStructureVersion: %#RX8\n", pVolDesc->bFileStructureVersion));
5564	Log2(("ISO9660: bReserved883: %#RX8\n", pVolDesc->bReserved883));
5565
5566	Log2(("ISO9660: RootDir.cbDirRec: %#RX8\n", pVolDesc->RootDir.DirRec.cbDirRec));
5567	Log2(("ISO9660: RootDir.cExtAttrBlocks: %#RX8\n", pVolDesc->RootDir.DirRec.cExtAttrBlocks));
5568	Log2(("ISO9660: RootDir.offExtent: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.offExtent.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.offExtent.le)));
5569	Log2(("ISO9660: RootDir.cbData: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.cbData.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.cbData.le)));
5570	Log2(("ISO9660: RootDir.RecTime: %04u-%02u-%02u %02u:%02u:%02u%+03d\n",
5571	pVolDesc->RootDir.DirRec.RecTime.bYear + 1900,
5572	pVolDesc->RootDir.DirRec.RecTime.bMonth,
5573	pVolDesc->RootDir.DirRec.RecTime.bDay,
5574	pVolDesc->RootDir.DirRec.RecTime.bHour,
5575	pVolDesc->RootDir.DirRec.RecTime.bMinute,
5576	pVolDesc->RootDir.DirRec.RecTime.bSecond,
5577	pVolDesc->RootDir.DirRec.RecTime.offUtc*4/60));
5578	Log2(("ISO9660: RootDir.RecTime.fFileFlags: %RX8\n", pVolDesc->RootDir.DirRec.fFileFlags));
5579	Log2(("ISO9660: RootDir.RecTime.bFileUnitSize: %RX8\n", pVolDesc->RootDir.DirRec.bFileUnitSize));
5580	Log2(("ISO9660: RootDir.RecTime.bInterleaveGapSize: %RX8\n", pVolDesc->RootDir.DirRec.bInterleaveGapSize));
5581	Log2(("ISO9660: RootDir.RecTime.VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.le)));
5582	Log2(("ISO9660: RootDir.RecTime.bFileIdLength: %RX8\n", pVolDesc->RootDir.DirRec.bFileIdLength));
5583	Log2(("ISO9660: RootDir.RecTime.achFileId: '%.*s'\n", pVolDesc->RootDir.DirRec.bFileIdLength, pVolDesc->RootDir.DirRec.achFileId));
5584	uint32_t offSysUse = RT_OFFSETOF(ISO9660DIRREC, achFileId[pVolDesc->RootDir.DirRec.bFileIdLength])
5585	+ !(pVolDesc->RootDir.DirRec.bFileIdLength & 1);
5586	if (offSysUse < pVolDesc->RootDir.DirRec.cbDirRec)
5587	{
5588	Log2(("ISO9660: RootDir System Use:\n%.*RhxD\n",
5589	pVolDesc->RootDir.DirRec.cbDirRec - offSysUse, &pVolDesc->RootDir.ab[offSysUse]));
5590	}
5591	}
5592	}
5593
5594	#endif /* LOG_ENABLED */
5595
5596	/**
5597	* Deal with a root directory from a primary or supplemental descriptor.
5598	*
5599	* @returns IPRT status code.
5600	* @param pThis The ISO 9660 instance being initialized.
5601	* @param pRootDir The root directory record to check out.
5602	* @param pDstRootDir Where to store a copy of the root dir record.
5603	* @param pErrInfo Where to return additional error info. Can be NULL.
5604	*/
5605	static int rtFsIsoVolHandleRootDir(PRTFSISOVOL pThis, PCISO9660DIRREC pRootDir,
5606	PISO9660DIRREC pDstRootDir, PRTERRINFO pErrInfo)
5607	{
5608	if (pRootDir->cbDirRec < RT_OFFSETOF(ISO9660DIRREC, achFileId))
5609	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Root dir record size is too small: %#x (min %#x)",
5610	pRootDir->cbDirRec, RT_OFFSETOF(ISO9660DIRREC, achFileId));
5611
5612	if (!(pRootDir->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY))
5613	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5614	"Root dir is not flagged as directory: %#x", pRootDir->fFileFlags);
5615	if (pRootDir->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)
5616	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5617	"Root dir is cannot be multi-extent: %#x", pRootDir->fFileFlags);
5618
5619	if (RT_LE2H_U32(pRootDir->cbData.le) != RT_BE2H_U32(pRootDir->cbData.be))
5620	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir size: {%#RX32,%#RX32}",
5621	RT_BE2H_U32(pRootDir->cbData.be), RT_LE2H_U32(pRootDir->cbData.le));
5622	if (RT_LE2H_U32(pRootDir->cbData.le) == 0)
5623	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Zero sized root dir");
5624
5625	if (RT_LE2H_U32(pRootDir->offExtent.le) != RT_BE2H_U32(pRootDir->offExtent.be))
5626	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir extent: {%#RX32,%#RX32}",
5627	RT_BE2H_U32(pRootDir->offExtent.be), RT_LE2H_U32(pRootDir->offExtent.le));
5628
5629	if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != RT_BE2H_U16(pRootDir->VolumeSeqNo.be))
5630	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir volume sequence ID: {%#RX16,%#RX16}",
5631	RT_BE2H_U16(pRootDir->VolumeSeqNo.be), RT_LE2H_U16(pRootDir->VolumeSeqNo.le));
5632	if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != pThis->idPrimaryVol)
5633	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5634	"Expected root dir to have same volume sequence number as primary volume: %#x, expected %#x",
5635	RT_LE2H_U16(pRootDir->VolumeSeqNo.le), pThis->idPrimaryVol);
5636
5637	/*
5638	* Seems okay, copy it.
5639	*/
5640	pDstRootDir = pRootDir;
5641	return VINF_SUCCESS;
5642	}
5643
5644
5645	/**
5646	* Deal with a primary volume descriptor.
5647	*
5648	* @returns IPRT status code.
5649	* @param pThis The ISO 9660 instance being initialized.
5650	* @param pVolDesc The volume descriptor to handle.
5651	* @param offVolDesc The disk offset of the volume descriptor.
5652	* @param pRootDir Where to return a copy of the root directory record.
5653	* @param poffRootDirRec Where to return the disk offset of the root dir.
5654	* @param pErrInfo Where to return additional error info. Can be NULL.
5655	*/
5656	static int rtFsIsoVolHandlePrimaryVolDesc(PRTFSISOVOL pThis, PCISO9660PRIMARYVOLDESC pVolDesc, uint32_t offVolDesc,
5657	PISO9660DIRREC pRootDir, uint64_t *poffRootDirRec, PRTERRINFO pErrInfo)
5658	{
5659	if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION)
5660	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5661	"Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion);
5662
5663	/*
5664	* We need the block size ...
5665	*/
5666	pThis->cbBlock = RT_LE2H_U16(pVolDesc->cbLogicalBlock.le);
5667	if ( pThis->cbBlock != RT_BE2H_U16(pVolDesc->cbLogicalBlock.be)
5668	\|\| !RT_IS_POWER_OF_TWO(pThis->cbBlock)
5669	\|\| pThis->cbBlock / pThis->cbSector < 1)
5670	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid logical block size: {%#RX16,%#RX16}",
5671	RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le));
5672	if (pThis->cbBlock / pThis->cbSector > 128)
5673	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported block size: %#x\n", pThis->cbBlock);
5674
5675	/*
5676	* ... volume space size ...
5677	*/
5678	pThis->cBlocksInPrimaryVolumeSpace = RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le);
5679	if (pThis->cBlocksInPrimaryVolumeSpace != RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be))
5680	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume space size: {%#RX32,%#RX32}",
5681	RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le));
5682	pThis->cbPrimaryVolumeSpace = pThis->cBlocksInPrimaryVolumeSpace * (uint64_t)pThis->cbBlock;
5683
5684	/*
5685	* ... number of volumes in the set ...
5686	*/
5687	pThis->cVolumesInSet = RT_LE2H_U16(pVolDesc->cVolumesInSet.le);
5688	if ( pThis->cVolumesInSet != RT_BE2H_U16(pVolDesc->cVolumesInSet.be)
5689	\|\| pThis->cVolumesInSet == 0)
5690	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume set size: {%#RX16,%#RX16}",
5691	RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le));
5692	if (pThis->cVolumesInSet > 32)
5693	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Too large volume set size: %#x\n", pThis->cVolumesInSet);
5694
5695	/*
5696	* ... primary volume sequence ID ...
5697	*/
5698	pThis->idPrimaryVol = RT_LE2H_U16(pVolDesc->VolumeSeqNo.le);
5699	if (pThis->idPrimaryVol != RT_BE2H_U16(pVolDesc->VolumeSeqNo.be))
5700	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume sequence ID: {%#RX16,%#RX16}",
5701	RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le));
5702	if ( pThis->idPrimaryVol > pThis->cVolumesInSet
5703	\|\| pThis->idPrimaryVol < 1)
5704	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5705	"Volume sequence ID out of of bound: %#x (1..%#x)\n", pThis->idPrimaryVol, pThis->cVolumesInSet);
5706
5707	/*
5708	* ... and the root directory record.
5709	*/
5710	*poffRootDirRec = offVolDesc + RT_OFFSETOF(ISO9660PRIMARYVOLDESC, RootDir.DirRec);
5711	return rtFsIsoVolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo);
5712	}
5713
5714
5715	/**
5716	* Deal with a supplementary volume descriptor.
5717	*
5718	* @returns IPRT status code.
5719	* @param pThis The ISO 9660 instance being initialized.
5720	* @param pVolDesc The volume descriptor to handle.
5721	* @param offVolDesc The disk offset of the volume descriptor.
5722	* @param pbUcs2Level Where to return the joliet level, if found. Caller
5723	* initializes this to zero, we'll return 1, 2 or 3 if
5724	* joliet was detected.
5725	* @param pRootDir Where to return the root directory, if found.
5726	* @param poffRootDirRec Where to return the disk offset of the root dir.
5727	* @param pErrInfo Where to return additional error info. Can be NULL.
5728	*/
5729	static int rtFsIsoVolHandleSupplementaryVolDesc(PRTFSISOVOL pThis, PCISO9660SUPVOLDESC pVolDesc, uint32_t offVolDesc,
5730	uint8_t pbUcs2Level, PISO9660DIRREC pRootDir, uint64_t poffRootDirRec,
5731	PRTERRINFO pErrInfo)
5732	{
5733	if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION)
5734	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5735	"Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion);
5736
5737	/*
5738	* Is this a joliet volume descriptor? If not, we probably don't need to
5739	* care about it.
5740	*/
5741	if ( pVolDesc->abEscapeSequences[0] != ISO9660_JOLIET_ESC_SEQ_0
5742	\|\| pVolDesc->abEscapeSequences[1] != ISO9660_JOLIET_ESC_SEQ_1
5743	\|\| ( pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1
5744	&& pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2
5745	&& pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_3))
5746	return VINF_SUCCESS;
5747
5748	/*
5749	* Skip if joliet is unwanted.
5750	*/
5751	if (pThis->fFlags & RTFSISO9660_F_NO_JOLIET)
5752	return VINF_SUCCESS;
5753
5754	/*
5755	* Check that the joliet descriptor matches the primary one.
5756	* Note! These are our assumptions and may be wrong.
5757	*/
5758	if (pThis->cbBlock == 0)
5759	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5760	"Supplementary joliet volume descriptor is not supported when appearing before the primary volume descriptor");
5761	if (ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock) != pThis->cbBlock)
5762	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5763	"Logical block size for joliet volume descriptor differs from primary: %#RX16 vs %#RX16\n",
5764	ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock), pThis->cbBlock);
5765	if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize) != pThis->cBlocksInPrimaryVolumeSpace)
5766	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5767	"Volume space size for joliet volume descriptor differs from primary: %#RX32 vs %#RX32\n",
5768	ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize), pThis->cBlocksInPrimaryVolumeSpace);
5769	if (ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet) != pThis->cVolumesInSet)
5770	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5771	"Volume set size for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n",
5772	ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet), pThis->cVolumesInSet);
5773	if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo) != pThis->idPrimaryVol)
5774	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5775	"Volume sequence ID for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n",
5776	ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo), pThis->idPrimaryVol);
5777
5778	if (*pbUcs2Level != 0)
5779	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one supplementary joliet volume descriptor");
5780
5781	/*
5782	* Switch to the joliet root dir as it has UTF-16 stuff in it.
5783	*/
5784	int rc = rtFsIsoVolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo);
5785	if (RT_SUCCESS(rc))
5786	{
5787	*poffRootDirRec = offVolDesc + RT_OFFSETOF(ISO9660SUPVOLDESC, RootDir.DirRec);
5788	*pbUcs2Level = pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1 ? 1
5789	: pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2 ? 2 : 3;
5790	Log(("ISO9660: Joliet with UCS-2 level %u\n", *pbUcs2Level));
5791	}
5792	return rc;
5793	}
5794
5795
5796
5797	/**
5798	* Worker for RTFsIso9660VolOpen.
5799	*
5800	* @returns IPRT status code.
5801	* @param pThis The ISO VFS instance to initialize.
5802	* @param hVfsSelf The ISO VFS handle (no reference consumed).
5803	* @param hVfsBacking The file backing the alleged FAT file system.
5804	* Reference is consumed (via rtFsIsoVol_Close).
5805	* @param fFlags Flags, RTFSISO9660_F_XXX.
5806	* @param pErrInfo Where to return additional error info. Can be NULL.
5807	*/
5808	static int rtFsIsoVolTryInit(PRTFSISOVOL pThis, RTVFS hVfsSelf, RTVFSFILE hVfsBacking, uint32_t fFlags, PRTERRINFO pErrInfo)
5809	{
5810	uint32_t const cbSector = 2048;
5811
5812	/*
5813	* First initialize the state so that rtFsIsoVol_Destroy won't trip up.
5814	*/
5815	pThis->hVfsSelf = hVfsSelf;
5816	pThis->hVfsBacking = hVfsBacking; /* Caller referenced it for us, we consume it; rtFsIsoVol_Destroy releases it. */
5817	pThis->cbBacking = 0;
5818	pThis->cBackingSectors = 0;
5819	pThis->fFlags = fFlags;
5820	pThis->cbSector = cbSector;
5821	pThis->cbBlock = 0;
5822	pThis->cBlocksInPrimaryVolumeSpace = 0;
5823	pThis->cbPrimaryVolumeSpace = 0;
5824	pThis->cVolumesInSet = 0;
5825	pThis->idPrimaryVol = UINT32_MAX;
5826	pThis->fIsUtf16 = false;
5827	pThis->pRootDir = NULL;
5828
5829	/*
5830	* Get stuff that may fail.
5831	*/
5832	int rc = RTVfsFileGetSize(hVfsBacking, &pThis->cbBacking);
5833	if (RT_SUCCESS(rc))
5834	pThis->cBackingSectors = pThis->cbBacking / pThis->cbSector;
5835	else
5836	return rc;
5837
5838	/*
5839	* Read the volume descriptors starting at logical sector 16.
5840	*/
5841	union
5842	{
5843	uint8_t ab[RTFSISO_MAX_LOGICAL_BLOCK_SIZE];
5844	uint16_t au16[RTFSISO_MAX_LOGICAL_BLOCK_SIZE / 2];
5845	uint32_t au32[RTFSISO_MAX_LOGICAL_BLOCK_SIZE / 4];
5846	ISO9660VOLDESCHDR VolDescHdr;
5847	ISO9660BOOTRECORD BootRecord;
5848	ISO9660PRIMARYVOLDESC PrimaryVolDesc;
5849	ISO9660SUPVOLDESC SupVolDesc;
5850	ISO9660VOLPARTDESC VolPartDesc;
5851	} Buf;
5852	RT_ZERO(Buf);
5853
5854	uint64_t offRootDirRec = UINT64_MAX;
5855	ISO9660DIRREC RootDir;
5856	RT_ZERO(RootDir);
5857
5858	uint64_t offJolietRootDirRec = UINT64_MAX;
5859	uint8_t bJolietUcs2Level = 0;
5860	ISO9660DIRREC JolietRootDir;
5861	RT_ZERO(JolietRootDir);
5862
5863	uint8_t uUdfLevel = 0;
5864	uint64_t offUdfBootVolDesc = UINT64_MAX;
5865
5866	uint32_t cPrimaryVolDescs = 0;
5867	uint32_t cSupplementaryVolDescs = 0;
5868	uint32_t cBootRecordVolDescs = 0;
5869	uint32_t offVolDesc = 16 * cbSector;
5870	enum
5871	{
5872	kStateStart = 0,
5873	kStateNoSeq,
5874	kStateCdSeq,
5875	kStateUdfSeq
5876	} enmState = kStateStart;
5877	for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector)
5878	{
5879	if (iVolDesc > 32)
5880	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "More than 32 volume descriptors, doesn't seem right...");
5881
5882	/* Read the next one and check the signature. */
5883	rc = RTVfsFileReadAt(hVfsBacking, offVolDesc, &Buf, cbSector, NULL);
5884	if (RT_FAILURE(rc))
5885	return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc);
5886
5887	#define MATCH_STD_ID(a_achStdId1, a_szStdId2) \
5888	( (a_achStdId1)[0] == (a_szStdId2)[0] \
5889	&& (a_achStdId1)[1] == (a_szStdId2)[1] \
5890	&& (a_achStdId1)[2] == (a_szStdId2)[2] \
5891	&& (a_achStdId1)[3] == (a_szStdId2)[3] \
5892	&& (a_achStdId1)[4] == (a_szStdId2)[4] )
5893	#define MATCH_HDR(a_pStd, a_bType2, a_szStdId2, a_bVer2) \
5894	( MATCH_STD_ID((a_pStd)->achStdId, a_szStdId2) \
5895	&& (a_pStd)->bDescType == (a_bType2) \
5896	&& (a_pStd)->bDescVersion == (a_bVer2) )
5897
5898	/*
5899	* ISO 9660 ("CD001").
5900	*/
5901	if ( ( enmState == kStateStart
5902	\|\| enmState == kStateCdSeq
5903	\|\| enmState == kStateNoSeq)
5904	&& MATCH_STD_ID(Buf.VolDescHdr.achStdId, ISO9660VOLDESC_STD_ID) )
5905	{
5906	enmState = kStateCdSeq;
5907
5908	/* Do type specific handling. */
5909	Log(("ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType));
5910	if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY)
5911	{
5912	cPrimaryVolDescs++;
5913	if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION)
5914	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5915	"Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
5916	#ifdef LOG_ENABLED
5917	rtFsIsoVolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc);
5918	#endif
5919	if (cPrimaryVolDescs > 1)
5920	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor");
5921	rc = rtFsIsoVolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo);
5922	}
5923	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY)
5924	{
5925	cSupplementaryVolDescs++;
5926	if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION)
5927	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5928	"Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
5929	#ifdef LOG_ENABLED
5930	rtFsIsoVolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc);
5931	#endif
5932	rc = rtFsIsoVolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir,
5933	&offJolietRootDirRec, pErrInfo);
5934	}
5935	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD)
5936	{
5937	cBootRecordVolDescs++;
5938	}
5939	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR)
5940	{
5941	if (!cPrimaryVolDescs)
5942	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor");
5943	enmState = kStateNoSeq;
5944	}
5945	else
5946	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5947	"Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType);
5948	}
5949	/*
5950	* UDF volume recognition sequence (VRS).
5951	*/
5952	else if ( ( enmState == kStateNoSeq
5953	\|\| enmState == kStateStart)
5954	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BEGIN, UDF_EXT_VOL_DESC_VERSION) )
5955	{
5956	if (uUdfLevel == 0)
5957	enmState = kStateUdfSeq;
5958	else
5959	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BEA01 sequence is supported");
5960	}
5961	else if ( enmState == kStateUdfSeq
5962	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_02, UDF_EXT_VOL_DESC_VERSION) )
5963	uUdfLevel = 2;
5964	else if ( enmState == kStateUdfSeq
5965	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_03, UDF_EXT_VOL_DESC_VERSION) )
5966	uUdfLevel = 3;
5967	else if ( enmState == kStateUdfSeq
5968	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BOOT, UDF_EXT_VOL_DESC_VERSION) )
5969	{
5970	if (offUdfBootVolDesc == UINT64_MAX)
5971	offUdfBootVolDesc = iVolDesc * cbSector;
5972	else
5973	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BOOT2 descriptor is supported");
5974	}
5975	else if ( enmState == kStateUdfSeq
5976	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_TERM, UDF_EXT_VOL_DESC_VERSION) )
5977	{
5978	if (uUdfLevel != 0)
5979	enmState = kStateNoSeq;
5980	else
5981	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Found BEA01 & TEA01, but no NSR02 or NSR03 descriptors");
5982	}
5983	/*
5984	* Unknown, probably the end.
5985	*/
5986	else if (enmState == kStateNoSeq)
5987	break;
5988	else if (enmState == kStateStart)
5989	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
5990	"Not ISO? Unable to recognize volume descriptor signature: %.5Rhxs", Buf.VolDescHdr.achStdId);
5991	else if (enmState == kStateCdSeq)
5992	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5993	"Missing ISO 9660 terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
5994	else if (enmState == kStateUdfSeq)
5995	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5996	"Missing UDF terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
5997	else
5998	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
5999	"Unknown volume descriptor signature found at sector %u: %.5Rhxs",
6000	16 + iVolDesc, Buf.VolDescHdr.achStdId);
6001	if (RT_FAILURE(rc))
6002	return rc;
6003	}
6004
6005	/*
6006	* If we found a UDF VRS and are interested in UDF, we have more work to do here.
6007	*/
6008	if (uUdfLevel > 0 && !(fFlags & RTFSISO9660_F_NO_UDF) )
6009	{
6010	Log(("rtFsIsoVolTryInit: uUdfLevel=%d\n", uUdfLevel));
6011	rc = rtFsIsoVolHandleUdfDetection(pThis, &uUdfLevel, offUdfBootVolDesc, Buf.ab, sizeof(Buf), pErrInfo);
6012	if (RT_FAILURE(rc))
6013	return rc;
6014	}
6015
6016	/*
6017	* Decide which to prefer.
6018	*
6019	* By default we pick UDF over any of the two ISO 9960, there is currently
6020	* no way to override this without using the RTFSISO9660_F_NO_XXX options.
6021	*
6022	* If there isn't UDF, we may faced with choosing between joliet and rock
6023	* ridge. The joliet option is generally favorable as we don't have to
6024	* guess wrt to the file name encoding. So, we'll pick that for now.
6025	*
6026	* Note! Should we change this preference for joliet, there fun wrt making sure
6027	* there really is rock ridge stuff in the primary volume as well as
6028	* making sure there really is anything of value in the primary volume.
6029	*/
6030	if (uUdfLevel > 0)
6031	{
6032	pThis->enmType = RTFSISOVOLTYPE_UDF;
6033	rc = rtFsIsoDirShrd_NewUdf(pThis, NULL /pParent/, &pThis->Udf.VolInfo.RootDirIcb,
6034	NULL /pFileIdDesc/, 0 /offInDir/, &pThis->pRootDir);
6035	/** @todo fall back on failure? */
6036	return rc;
6037	}
6038	if (bJolietUcs2Level != 0)
6039	{
6040	pThis->enmType = RTFSISOVOLTYPE_JOLIET;
6041	pThis->fIsUtf16 = true;
6042	return rtFsIsoDirShrd_New9660(pThis, NULL, &JolietRootDir, 1, offJolietRootDirRec, &pThis->pRootDir);
6043	}
6044	pThis->enmType = RTFSISOVOLTYPE_ISO9960;
6045	return rtFsIsoDirShrd_New9660(pThis, NULL, &RootDir, 1, offRootDirRec, &pThis->pRootDir);
6046	}
6047
6048
6049	/**
6050	* Opens an ISO 9660 file system volume.
6051	*
6052	* @returns IPRT status code.
6053	* @param hVfsFileIn The file or device backing the volume.
6054	* @param fFlags RTFSISO9660_F_XXX.
6055	* @param phVfs Where to return the virtual file system handle.
6056	* @param pErrInfo Where to return additional error information.
6057	*/
6058	RTDECL(int) RTFsIso9660VolOpen(RTVFSFILE hVfsFileIn, uint32_t fFlags, PRTVFS phVfs, PRTERRINFO pErrInfo)
6059	{
6060	/*
6061	* Quick input validation.
6062	*/
6063	AssertPtrReturn(phVfs, VERR_INVALID_POINTER);
6064	*phVfs = NIL_RTVFS;
6065	AssertReturn(!(fFlags & ~RTFSISO9660_F_VALID_MASK), VERR_INVALID_FLAGS);
6066
6067	uint32_t cRefs = RTVfsFileRetain(hVfsFileIn);
6068	AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
6069
6070	/*
6071	* Create a new FAT VFS instance and try initialize it using the given input file.
6072	*/
6073	RTVFS hVfs = NIL_RTVFS;
6074	void *pvThis = NULL;
6075	int rc = RTVfsNew(&g_rtFsIsoVolOps, sizeof(RTFSISOVOL), NIL_RTVFS, RTVFSLOCK_CREATE_RW, &hVfs, &pvThis);
6076	if (RT_SUCCESS(rc))
6077	{
6078	rc = rtFsIsoVolTryInit((PRTFSISOVOL)pvThis, hVfs, hVfsFileIn, fFlags, pErrInfo);
6079	if (RT_SUCCESS(rc))
6080	*phVfs = hVfs;
6081	else
6082	RTVfsRelease(hVfs);
6083	}
6084	else
6085	RTVfsFileRelease(hVfsFileIn);
6086	return rc;
6087	}
6088
6089
6090	/**
6091	* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnValidate}
6092	*/
6093	static DECLCALLBACK(int) rtVfsChainIsoFsVol_Validate(PCRTVFSCHAINELEMENTREG pProviderReg, PRTVFSCHAINSPEC pSpec,
6094	PRTVFSCHAINELEMSPEC pElement, uint32_t *poffError, PRTERRINFO pErrInfo)
6095	{
6096	RT_NOREF(pProviderReg, pSpec);
6097
6098	/*
6099	* Basic checks.
6100	*/
6101	if (pElement->enmTypeIn != RTVFSOBJTYPE_FILE)
6102	return pElement->enmTypeIn == RTVFSOBJTYPE_INVALID ? VERR_VFS_CHAIN_CANNOT_BE_FIRST_ELEMENT : VERR_VFS_CHAIN_TAKES_FILE;
6103	if ( pElement->enmType != RTVFSOBJTYPE_VFS
6104	&& pElement->enmType != RTVFSOBJTYPE_DIR)
6105	return VERR_VFS_CHAIN_ONLY_DIR_OR_VFS;
6106	if (pElement->cArgs > 1)
6107	return VERR_VFS_CHAIN_AT_MOST_ONE_ARG;
6108
6109	/*
6110	* Parse the flag if present, save in pElement->uProvider.
6111	*/
6112	uint32_t fFlags = 0;
6113	if (pElement->cArgs > 0)
6114	{
6115	for (uint32_t iArg = 0; iArg < pElement->cArgs; iArg++)
6116	{
6117	const char *psz = pElement->paArgs[iArg].psz;
6118	if (*psz)
6119	{
6120	if (!strcmp(psz, "nojoliet"))
6121	fFlags \|= RTFSISO9660_F_NO_JOLIET;
6122	else if (!strcmp(psz, "norock"))
6123	fFlags \|= RTFSISO9660_F_NO_ROCK;
6124	else if (!strcmp(psz, "noudf"))
6125	fFlags \|= RTFSISO9660_F_NO_UDF;
6126	else
6127	{
6128	*poffError = pElement->paArgs[iArg].offSpec;
6129	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_CHAIN_INVALID_ARGUMENT, "Only knows: 'nojoliet' and 'norock'");
6130	}
6131	}
6132	}
6133	}
6134
6135	pElement->uProvider = fFlags;
6136	return VINF_SUCCESS;
6137	}
6138
6139
6140	/**
6141	* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnInstantiate}
6142	*/
6143	static DECLCALLBACK(int) rtVfsChainIsoFsVol_Instantiate(PCRTVFSCHAINELEMENTREG pProviderReg, PCRTVFSCHAINSPEC pSpec,
6144	PCRTVFSCHAINELEMSPEC pElement, RTVFSOBJ hPrevVfsObj,
6145	PRTVFSOBJ phVfsObj, uint32_t *poffError, PRTERRINFO pErrInfo)
6146	{
6147	RT_NOREF(pProviderReg, pSpec, poffError);
6148
6149	int rc;
6150	RTVFSFILE hVfsFileIn = RTVfsObjToFile(hPrevVfsObj);
6151	if (hVfsFileIn != NIL_RTVFSFILE)
6152	{
6153	RTVFS hVfs;
6154	rc = RTFsIso9660VolOpen(hVfsFileIn, pElement->uProvider, &hVfs, pErrInfo);
6155	RTVfsFileRelease(hVfsFileIn);
6156	if (RT_SUCCESS(rc))
6157	{
6158	*phVfsObj = RTVfsObjFromVfs(hVfs);
6159	RTVfsRelease(hVfs);
6160	if (*phVfsObj != NIL_RTVFSOBJ)
6161	return VINF_SUCCESS;
6162	rc = VERR_VFS_CHAIN_CAST_FAILED;
6163	}
6164	}
6165	else
6166	rc = VERR_VFS_CHAIN_CAST_FAILED;
6167	return rc;
6168	}
6169
6170
6171	/**
6172	* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnCanReuseElement}
6173	*/
6174	static DECLCALLBACK(bool) rtVfsChainIsoFsVol_CanReuseElement(PCRTVFSCHAINELEMENTREG pProviderReg,
6175	PCRTVFSCHAINSPEC pSpec, PCRTVFSCHAINELEMSPEC pElement,
6176	PCRTVFSCHAINSPEC pReuseSpec, PCRTVFSCHAINELEMSPEC pReuseElement)
6177	{
6178	RT_NOREF(pProviderReg, pSpec, pReuseSpec);
6179	if ( pElement->paArgs[0].uProvider == pReuseElement->paArgs[0].uProvider
6180	\|\| !pReuseElement->paArgs[0].uProvider)
6181	return true;
6182	return false;
6183	}
6184
6185
6186	/** VFS chain element 'file'. */
6187	static RTVFSCHAINELEMENTREG g_rtVfsChainIsoFsVolReg =
6188	{
6189	/* uVersion = */ RTVFSCHAINELEMENTREG_VERSION,
6190	/* fReserved = */ 0,
6191	/* pszName = */ "isofs",
6192	/* ListEntry = */ { NULL, NULL },
6193	/* pszHelp = */ "Open a ISO 9660 or UDF file system, requires a file object on the left side.\n"
6194	"The 'noudf' option make it ignore any UDF.\n"
6195	"The 'nojoliet' option make it ignore any joliet supplemental volume.\n"
6196	"The 'norock' option make it ignore any rock ridge info.\n",
6197	/* pfnValidate = */ rtVfsChainIsoFsVol_Validate,
6198	/* pfnInstantiate = */ rtVfsChainIsoFsVol_Instantiate,
6199	/* pfnCanReuseElement = */ rtVfsChainIsoFsVol_CanReuseElement,
6200	/* uEndMarker = */ RTVFSCHAINELEMENTREG_VERSION
6201	};
6202
6203	RTVFSCHAIN_AUTO_REGISTER_ELEMENT_PROVIDER(&g_rtVfsChainIsoFsVolReg, rtVfsChainIsoFsVolReg);
6204

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source: vbox/trunk/src/VBox/Runtime/common/fs/isovfs.cpp@ 69059

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