isovfs.cpp@ 90215

Last change on this file since 90215 was 90215, checked in by vboxsync, 3 years ago
IPRT/isovfs.cpp: Don't be so strict about the joliet volume size. bugref:9852
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1	/* $Id: isovfs.cpp 90215 2021-07-15 16:40:37Z vboxsync $ */
2	/** @file
3	* IPRT - ISO 9660 and UDF Virtual Filesystem (read only).
4	*/
5
6	/*
7	* Copyright (C) 2017-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
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/utf16.h>
50	#include <iprt/formats/iso9660.h>
51	#include <iprt/formats/udf.h>
52
53
54	/*********************************************************************************************************************************
55	* Defined Constants And Macros *
56	*********************************************************************************************************************************/
57	/** The maximum logical block size. */
58	#define RTFSISO_MAX_LOGICAL_BLOCK_SIZE _16K
59	/** Max directory size. */
60	#if ARCH_BITS == 32
61	# define RTFSISO_MAX_DIR_SIZE _32M
62	#else
63	# define RTFSISO_MAX_DIR_SIZE _64M
64	#endif
65
66	/** Check if an entity ID field equals the given ID string. */
67	#define UDF_ENTITY_ID_EQUALS(a_pEntityId, a_szId) \
68	( memcmp(&(a_pEntityId)->achIdentifier[0], a_szId, RT_MIN(sizeof(a_szId), sizeof(a_pEntityId)->achIdentifier)) == 0 )
69	/** Checks if a character set indicator indicates OSTA compressed unicode. */
70	#define UDF_IS_CHAR_SET_OSTA(a_pCharSet) \
71	( (a_pCharSet)->uType == UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE \
72	&& memcmp((a_pCharSet)->abInfo, UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO, \
73	sizeof(UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO)) == 0 )
74
75
76	/** @name UDF structure logging macros
77	* @{ */
78	#define UDF_LOG2_MEMBER(a_pStruct, a_szFmt, a_Member) \
79	Log2(("ISO/UDF: %-32s %" a_szFmt "\n", #a_Member ":", (a_pStruct)->a_Member))
80	#define UDF_LOG2_MEMBER_EX(a_pStruct, a_szFmt, a_Member, a_cchIndent) \
81	Log2(("ISO/UDF: %*s%-32s %" a_szFmt "\n", a_cchIndent, "", #a_Member ":", (a_pStruct)->a_Member))
82	#define UDF_LOG2_MEMBER_ENTITY_ID_EX(a_pStruct, a_Member, a_cchIndent) \
83	Log2(("ISO/UDF: %*s%-32s '%.23s' fFlags=%#06x Suffix=%.8Rhxs\n", a_cchIndent, "", #a_Member ":", \
84	(a_pStruct)->a_Member.achIdentifier, (a_pStruct)->a_Member.fFlags, &(a_pStruct)->a_Member.Suffix))
85	#define UDF_LOG2_MEMBER_ENTITY_ID(a_pStruct, a_Member) UDF_LOG2_MEMBER_ENTITY_ID_EX(a_pStruct, a_Member, 0)
86	#define UDF_LOG2_MEMBER_EXTENTAD(a_pStruct, a_Member) \
87	Log2(("ISO/UDF: %-32s sector %#010RX32 LB %#010RX32\n", #a_Member ":", (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.cb))
88	#define UDF_LOG2_MEMBER_SHORTAD(a_pStruct, a_Member) \
89	Log2(("ISO/UDF: %-32s sector %#010RX32 LB %#010RX32 %s\n", #a_Member ":", (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.cb, \
90	(a_pStruct)->a_Member.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED ? "alloced+recorded" \
91	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_ONLY_ALLOCATED ? "alloced" \
92	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_FREE ? "free" : "next" ))
93	#define UDF_LOG2_MEMBER_LONGAD(a_pStruct, a_Member) \
94	Log2(("ISO/UDF: %-32s partition %#RX16, block %#010RX32 LB %#010RX32 %s idUnique=%#010RX32 fFlags=%#RX16\n", #a_Member ":", \
95	(a_pStruct)->a_Member.Location.uPartitionNo, (a_pStruct)->a_Member.Location.off, (a_pStruct)->a_Member.cb, \
96	(a_pStruct)->a_Member.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED ? "alloced+recorded" \
97	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_ONLY_ALLOCATED ? "alloced" \
98	: (a_pStruct)->a_Member.uType == UDF_AD_TYPE_FREE ? "free" : "next", \
99	(a_pStruct)->a_Member.ImplementationUse.Fid.idUnique, (a_pStruct)->a_Member.ImplementationUse.Fid.fFlags ))
100	#define UDF_LOG2_MEMBER_LBADDR(a_pStruct, a_Member) \
101	Log2(("ISO/UDF: %-32s block %#010RX32 in partition %#06RX16\n", #a_Member ":", \
102	(a_pStruct)->a_Member.off, (a_pStruct)->a_Member.uPartitionNo))
103
104	#define UDF_LOG2_MEMBER_TIMESTAMP(a_pStruct, a_Member) \
105	Log2(("ISO/UDF: %-32s %04d-%02u-%02u %02u:%02u:%02u.%02u%02u%02u offUtc=%d type=%#x\n", #a_Member ":", \
106	(a_pStruct)->a_Member.iYear, (a_pStruct)->a_Member.uMonth, (a_pStruct)->a_Member.uDay, \
107	(a_pStruct)->a_Member.uHour, (a_pStruct)->a_Member.uMinute, (a_pStruct)->a_Member.uSecond, \
108	(a_pStruct)->a_Member.cCentiseconds, (a_pStruct)->a_Member.cHundredsOfMicroseconds, \
109	(a_pStruct)->a_Member.cMicroseconds, (a_pStruct)->a_Member.offUtcInMin, (a_pStruct)->a_Member.fType ))
110	#define UDF_LOG2_MEMBER_CHARSPEC(a_pStruct, a_Member) \
111	do { \
112	if ( (a_pStruct)->a_Member.uType == UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE \
113	&& memcmp(&(a_pStruct)->a_Member.abInfo[0], UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO, \
114	sizeof(UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO)) == 0) \
115	Log2(("ISO/UDF: %-32s OSTA COMPRESSED UNICODE INFO\n", #a_Member ":")); \
116	else if (ASMMemIsZero(&(a_pStruct)->a_Member, sizeof((a_pStruct)->a_Member))) \
117	Log2(("ISO/UDF: %-32s all zeros\n", #a_Member ":")); \
118	else \
119	Log2(("ISO/UDF: %-32s %#x info: %.63Rhxs\n", #a_Member ":", \
120	(a_pStruct)->a_Member.uType, (a_pStruct)->a_Member.abInfo)); \
121	} while (0)
122	#define UDF_LOG2_MEMBER_DSTRING(a_pStruct, a_Member) \
123	do { \
124	if ((a_pStruct)->a_Member[0] == 8) \
125	Log2(("ISO/UDF: %-32s 8: '%s' len=%u (actual=%u)\n", #a_Member ":", &(a_pStruct)->a_Member[1], \
126	(a_pStruct)->a_Member[sizeof((a_pStruct)->a_Member) - 1], \
127	RTStrNLen(&(a_pStruct)->a_Member[1], sizeof((a_pStruct)->a_Member) - 2) + 1 )); \
128	else if ((a_pStruct)->a_Member[0] == 16) \
129	{ \
130	PCRTUTF16 pwszTmp = (PCRTUTF16)&(a_pStruct)->a_Member[1]; \
131	char *pszTmp = NULL; \
132	RTUtf16BigToUtf8Ex(pwszTmp, (sizeof((a_pStruct)->a_Member) - 2) / sizeof(RTUTF16), &pszTmp, 0, NULL); \
133	Log2(("ISO/UDF: %-32s 16: '%s' len=%u (actual=%u)\n", #a_Member ":", pszTmp, \
134	(a_pStruct)->a_Member[sizeof((a_pStruct)->a_Member) - 1], \
135	RTUtf16NLen(pwszTmp, (sizeof((a_pStruct)->a_Member) - 2) / sizeof(RTUTF16)) * sizeof(RTUTF16) + 1 /??/ )); \
136	} \
137	else if (ASMMemIsZero(&(a_pStruct)->a_Member[0], sizeof((a_pStruct)->a_Member))) \
138	Log2(("ISO/UDF: %-32s empty\n", #a_Member ":")); \
139	else \
140	Log2(("ISO/UDF: %-32s bad: %.*Rhxs\n", #a_Member ":", sizeof((a_pStruct)->a_Member), &(a_pStruct)->a_Member[0] )); \
141	} while (0)
142	/** @} */
143
144
145
146	/*********************************************************************************************************************************
147	* Structures and Typedefs *
148	*********************************************************************************************************************************/
149	/** Pointer to an ISO volume (VFS instance data). */
150	typedef struct RTFSISOVOL *PRTFSISOVOL;
151	/** Pointer to a const ISO volume (VFS instance data). */
152	typedef struct RTFSISOVOL const *PCRTFSISOVOL;
153
154	/** Pointer to a ISO directory instance. */
155	typedef struct RTFSISODIRSHRD *PRTFSISODIRSHRD;
156
157
158
159	/**
160	* ISO extent (internal to the VFS not a disk structure).
161	*/
162	typedef struct RTFSISOEXTENT
163	{
164	/** The disk or partition byte offset.
165	* This is set to UINT64_MAX for parts of sparse files that aren't recorded.*/
166	uint64_t off;
167	/** The size of the extent in bytes. */
168	uint64_t cbExtent;
169	/** UDF virtual partition number, UINT32_MAX for ISO 9660. */
170	uint32_t idxPart;
171	/** Reserved. */
172	uint32_t uReserved;
173	} RTFSISOEXTENT;
174	/** Pointer to an ISO 9660 extent. */
175	typedef RTFSISOEXTENT *PRTFSISOEXTENT;
176	/** Pointer to a const ISO 9660 extent. */
177	typedef RTFSISOEXTENT const *PCRTFSISOEXTENT;
178
179
180	/**
181	* ISO file system object, shared part.
182	*/
183	typedef struct RTFSISOCORE
184	{
185	/** The parent directory keeps a list of open objects (RTFSISOCORE). */
186	RTLISTNODE Entry;
187	/** Reference counter. */
188	uint32_t volatile cRefs;
189	/** The parent directory (not released till all children are close). */
190	PRTFSISODIRSHRD pParentDir;
191	/** The byte offset of the first directory record.
192	* This is used when looking up objects in a directory to avoid creating
193	* duplicate instances. */
194	uint64_t offDirRec;
195	/** Attributes. */
196	RTFMODE fAttrib;
197	/** The object size. */
198	uint64_t cbObject;
199	/** The access time. */
200	RTTIMESPEC AccessTime;
201	/** The modificaton time. */
202	RTTIMESPEC ModificationTime;
203	/** The change time. */
204	RTTIMESPEC ChangeTime;
205	/** The birth time. */
206	RTTIMESPEC BirthTime;
207	/** The i-node ID. */
208	RTINODE idINode;
209	/** Pointer to the volume. */
210	PRTFSISOVOL pVol;
211	/** The version number. */
212	uint32_t uVersion;
213	/** Number of extents. */
214	uint32_t cExtents;
215	/** The first extent. */
216	RTFSISOEXTENT FirstExtent;
217	/** Array of additional extents. */
218	PRTFSISOEXTENT paExtents;
219	} RTFSISOCORE;
220	typedef RTFSISOCORE *PRTFSISOCORE;
221
222	/**
223	* ISO file, shared data.
224	*/
225	typedef struct RTFSISOFILESHRD
226	{
227	/** Core ISO9660 object info. */
228	RTFSISOCORE Core;
229	} RTFSISOFILESHRD;
230	/** Pointer to a ISO 9660 file object. */
231	typedef RTFSISOFILESHRD *PRTFSISOFILESHRD;
232
233
234	/**
235	* ISO directory, shared data.
236	*
237	* We will always read in the whole directory just to keep things really simple.
238	*/
239	typedef struct RTFSISODIRSHRD
240	{
241	/** Core ISO 9660 object info. */
242	RTFSISOCORE Core;
243	/** Open child objects (RTFSISOCORE). */
244	RTLISTNODE OpenChildren;
245
246	/** Pointer to the directory content. */
247	uint8_t *pbDir;
248	/** The size of the directory content (duplicate of Core.cbObject). */
249	uint32_t cbDir;
250	} RTFSISODIRSHRD;
251	/** Pointer to a ISO directory instance. */
252	typedef RTFSISODIRSHRD *PRTFSISODIRSHRD;
253
254
255	/**
256	* Private data for a VFS file object.
257	*/
258	typedef struct RTFSISOFILEOBJ
259	{
260	/** Pointer to the shared data. */
261	PRTFSISOFILESHRD pShared;
262	/** The current file offset. */
263	uint64_t offFile;
264	} RTFSISOFILEOBJ;
265	typedef RTFSISOFILEOBJ *PRTFSISOFILEOBJ;
266
267	/**
268	* Private data for a VFS directory object.
269	*/
270	typedef struct RTFSISODIROBJ
271	{
272	/** Pointer to the shared data. */
273	PRTFSISODIRSHRD pShared;
274	/** The current directory offset. */
275	uint32_t offDir;
276	} RTFSISODIROBJ;
277	typedef RTFSISODIROBJ *PRTFSISODIROBJ;
278
279	/** Pointer to info about a UDF volume. */
280	typedef struct RTFSISOUDFVOLINFO *PRTFSISOUDFVOLINFO;
281
282
283	/** @name RTFSISO_UDF_PMAP_T_XXX
284	* @{ */
285	#define RTFSISO_UDF_PMAP_T_PLAIN 1
286	#define RTFSISO_UDF_PMAP_T_VPM_15 2
287	#define RTFSISO_UDF_PMAP_T_VPM_20 3
288	#define RTFSISO_UDF_PMAP_T_SPM 4
289	#define RTFSISO_UDF_PMAP_T_MPM 5
290	/** @} */
291
292	/**
293	* Information about a logical UDF partition.
294	*
295	* This combins information from the partition descriptor, the UDFPARTMAPTYPE1
296	* and the UDFPARTMAPTYPE2 structure.
297	*/
298	typedef struct RTFSISOVOLUDFPMAP
299	{
300	/** Partition starting location as a byte offset. */
301	uint64_t offByteLocation;
302	/** Partition starting location (logical sector number). */
303	uint32_t offLocation;
304	/** Number of sectors. */
305	uint32_t cSectors;
306
307	/** Partition descriptor index (for processing). */
308	uint16_t idxPartDesc;
309	/** Offset info the map table. */
310	uint16_t offMapTable;
311	/** Partition number (not index). */
312	uint16_t uPartitionNo;
313	/** Partition number (not index). */
314	uint16_t uVolumeSeqNo;
315
316	/** The access type (UDF_PART_ACCESS_TYPE_XXX). */
317	uint32_t uAccessType;
318	/** Partition flags (UDF_PARTITION_FLAGS_XXX). */
319	uint16_t fFlags;
320	/** RTFSISO_UDF_PMAP_T_XXX. */
321	uint8_t bType;
322	/** Set if Hdr is valid. */
323	bool fHaveHdr;
324	/** Copy of UDFPARTITIONDESC::ContentsUse::Hdr. */
325	UDFPARTITIONHDRDESC Hdr;
326
327	} RTFSISOVOLUDFPMAP;
328	typedef RTFSISOVOLUDFPMAP *PRTFSISOVOLUDFPMAP;
329
330	/**
331	* Information about a UDF volume (/ volume set).
332	*
333	* This combines information from the primary and logical descriptors.
334	*
335	* @note There is only one volume per volume set in the current UDF
336	* implementation. So, this can be considered a volume and a volume set.
337	*/
338	typedef struct RTFSISOUDFVOLINFO
339	{
340	/** The extent containing the file set descriptor. */
341	UDFLONGAD FileSetDescriptor;
342
343	/** The root directory location (from the file set descriptor). */
344	UDFLONGAD RootDirIcb;
345	/** Location of the system stream directory associated with the file set. */
346	UDFLONGAD SystemStreamDirIcb;
347
348	/** The logical block size on this volume. */
349	uint32_t cbBlock;
350	/** The log2 of cbBlock. */
351	uint32_t cShiftBlock;
352	/** Flags (UDF_PVD_FLAGS_XXX). */
353	uint16_t fFlags;
354
355	/** Number of partitions mapp in this volume. */
356	uint16_t cPartitions;
357	/** Partitions in this volume. */
358	PRTFSISOVOLUDFPMAP paPartitions;
359
360	/** The volume ID string. */
361	UDFDSTRING achLogicalVolumeID[128];
362	} RTFSISOUDFVOLINFO;
363
364
365	/**
366	* Indicates which of the possible content types we're accessing.
367	*/
368	typedef enum RTFSISOVOLTYPE
369	{
370	/** Accessing the primary ISO-9660 volume. */
371	RTFSISOVOLTYPE_ISO9960 = 0,
372	/** Accessing the joliet volume (secondary ISO-9660). */
373	RTFSISOVOLTYPE_JOLIET,
374	/** Accessing the UDF volume. */
375	RTFSISOVOLTYPE_UDF
376	} RTFSISOVOLTYPE;
377
378	/**
379	* A ISO volume.
380	*/
381	typedef struct RTFSISOVOL
382	{
383	/** Handle to itself. */
384	RTVFS hVfsSelf;
385	/** The file, partition, or whatever backing the ISO 9660 volume. */
386	RTVFSFILE hVfsBacking;
387	/** The size of the backing thingy. */
388	uint64_t cbBacking;
389	/** The size of the backing thingy in sectors (cbSector). */
390	uint64_t cBackingSectors;
391	/** Flags. */
392	uint32_t fFlags;
393	/** The sector size (in bytes). */
394	uint32_t cbSector;
395	/** What we're accessing. */
396	RTFSISOVOLTYPE enmType;
397
398	/** @name ISO 9660 specific data
399	* @{ */
400	/** The size of a logical block in bytes. */
401	uint32_t cbBlock;
402	/** The primary volume space size in blocks. */
403	uint32_t cBlocksInPrimaryVolumeSpace;
404	/** The primary volume space size in bytes. */
405	uint64_t cbPrimaryVolumeSpace;
406	/** The number of volumes in the set. */
407	uint32_t cVolumesInSet;
408	/** The primary volume sequence ID. */
409	uint32_t idPrimaryVol;
410	/** Set if using UTF16-2 (joliet). */
411	bool fIsUtf16;
412	/** @} */
413
414	/** UDF specific data. */
415	struct
416	{
417	/** Volume information. */
418	RTFSISOUDFVOLINFO VolInfo;
419	/** The UDF level. */
420	uint8_t uLevel;
421	} Udf;
422
423	/** The root directory shared data. */
424	PRTFSISODIRSHRD pRootDir;
425	} RTFSISOVOL;
426
427
428	/**
429	* Info gathered from a VDS sequence.
430	*/
431	typedef struct RTFSISOVDSINFO
432	{
433	/** Number of entries in apPrimaryVols. */
434	uint32_t cPrimaryVols;
435	/** Number of entries in apLogicalVols. */
436	uint32_t cLogicalVols;
437	/** Number of entries in apPartitions. */
438	uint32_t cPartitions;
439	/** Pointer to primary volume descriptors (native endian). */
440	PUDFPRIMARYVOLUMEDESC apPrimaryVols[8];
441	/** Pointer to logical volume descriptors (native endian). */
442	PUDFLOGICALVOLUMEDESC apLogicalVols[8];
443	/** Pointer to partition descriptors (native endian). */
444	PUDFPARTITIONDESC apPartitions[16];
445
446	/** Created after scanning the sequence (here for cleanup purposes). */
447	PRTFSISOVOLUDFPMAP paPartMaps;
448	} RTFSISOVDSINFO;
449	/** Pointer to VDS sequence info. */
450	typedef RTFSISOVDSINFO *PRTFSISOVDSINFO;
451
452
453
454	/*********************************************************************************************************************************
455	* Global Variables *
456	*********************************************************************************************************************************/
457
458
459	/*********************************************************************************************************************************
460	* Internal Functions *
461	*********************************************************************************************************************************/
462	static void rtFsIsoDirShrd_AddOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild);
463	static void rtFsIsoDirShrd_RemoveOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild);
464	static int rtFsIsoDir_NewWithShared(PRTFSISOVOL pThis, PRTFSISODIRSHRD pShared, PRTVFSDIR phVfsDir);
465	static int rtFsIsoDir_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec,
466	uint32_t cDirRecs, uint64_t offDirRec, PRTVFSDIR phVfsDir);
467	static int rtFsIsoDir_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, PRTVFSDIR phVfsDir);
468	static PRTFSISOCORE rtFsIsoDir_LookupShared(PRTFSISODIRSHRD pThis, uint64_t offDirRec);
469
470	static int rtFsIsoVolValidateUdfDescCrc(PCUDFTAG pTag, size_t cbDesc, PRTERRINFO pErrInfo);
471	static int rtFsIsoVolValidateUdfDescTag(PCUDFTAG pTag, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo);
472	static int rtFsIsoVolValidateUdfDescTagAndCrc(PCUDFTAG pTag, size_t cbDesc, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo);
473
474
475	/**
476	* UDF virtual partition read function.
477	*
478	* This deals with all the fun related to block mapping and such.
479	*
480	* @returns VBox status code.
481	* @param pThis The instance.
482	* @param idxPart The virtual partition number.
483	* @param idxBlock The block number.
484	* @param offByteAddend The byte offset relative to the block.
485	* @param pvBuf The output buffer.
486	* @param cbToRead The number of bytes to read.
487	*/
488	static int rtFsIsoVolUdfVpRead(PRTFSISOVOL pThis, uint32_t idxPart, uint32_t idxBlock, uint64_t offByteAddend,
489	void *pvBuf, size_t cbToRead)
490	{
491	uint64_t const offByte = ((uint64_t)idxBlock << pThis->Udf.VolInfo.cShiftBlock) + offByteAddend;
492
493	int rc;
494	if (idxPart < pThis->Udf.VolInfo.cPartitions)
495	{
496	PRTFSISOVOLUDFPMAP pPart = &pThis->Udf.VolInfo.paPartitions[idxPart];
497	switch (pPart->bType)
498	{
499	case RTFSISO_UDF_PMAP_T_PLAIN:
500	rc = RTVfsFileReadAt(pThis->hVfsBacking, offByte + pPart->offByteLocation, pvBuf, cbToRead, NULL);
501	if (RT_SUCCESS(rc))
502	{
503	Log3(("ISO/UDF: Read %#x bytes at %#RX64 (%#x:%#RX64)\n",
504	cbToRead, offByte + pPart->offByteLocation, idxPart, offByte));
505	return VINF_SUCCESS;
506	}
507	Log(("ISO/UDF: Error reading %#x bytes at %#RX64 (%#x:%#RX64): %Rrc\n",
508	cbToRead, offByte + pPart->offByteLocation, idxPart, offByte, rc));
509	break;
510
511	default:
512	AssertFailed();
513	rc = VERR_ISOFS_IPE_1;
514	break;
515	}
516	}
517	else
518	{
519	Log(("ISO/UDF: Invalid partition index %#x (offset %#RX64), max partitions %#x\n",
520	idxPart, offByte, pThis->Udf.VolInfo.cPartitions));
521	rc = VERR_ISOFS_INVALID_PARTITION_INDEX;
522	}
523	return rc;
524	}
525
526
527	/**
528	* Returns the length of the version suffix in the given name.
529	*
530	* @returns Number of UTF16-BE chars in the version suffix.
531	* @param pawcName The name to examine.
532	* @param cwcName The length of the name.
533	* @param puValue Where to return the value.
534	*/
535	static size_t rtFsIso9660GetVersionLengthUtf16Big(PCRTUTF16 pawcName, size_t cwcName, uint32_t *puValue)
536	{
537	*puValue = 0;
538
539	/* -1: */
540	if (cwcName <= 2)
541	return 0;
542	RTUTF16 wc1 = RT_BE2H_U16(pawcName[cwcName - 1]);
543	if (!RT_C_IS_DIGIT(wc1))
544	return 0;
545	Assert(wc1 < 0x3a); /* ASSUMES the RT_C_IS_DIGIT macro works just fine on wide chars too. */
546
547	/* -2: */
548	RTUTF16 wc2 = RT_BE2H_U16(pawcName[cwcName - 2]);
549	if (wc2 == ';')
550	{
551	*puValue = wc1 - '0';
552	return 2;
553	}
554	if (!RT_C_IS_DIGIT(wc2) \|\| cwcName <= 3)
555	return 0;
556
557	/* -3: */
558	RTUTF16 wc3 = RT_BE2H_U16(pawcName[cwcName - 3]);
559	if (wc3 == ';')
560	{
561	*puValue = (wc1 - '0')
562	+ (wc2 - '0') * 10;
563	return 3;
564	}
565	if (!RT_C_IS_DIGIT(wc3) \|\| cwcName <= 4)
566	return 0;
567
568	/* -4: */
569	RTUTF16 wc4 = RT_BE2H_U16(pawcName[cwcName - 4]);
570	if (wc4 == ';')
571	{
572	*puValue = (wc1 - '0')
573	+ (wc2 - '0') * 10
574	+ (wc3 - '0') * 100;
575	return 4;
576	}
577	if (!RT_C_IS_DIGIT(wc4) \|\| cwcName <= 5)
578	return 0;
579
580	/* -5: */
581	RTUTF16 wc5 = RT_BE2H_U16(pawcName[cwcName - 5]);
582	if (wc5 == ';')
583	{
584	*puValue = (wc1 - '0')
585	+ (wc2 - '0') * 10
586	+ (wc3 - '0') * 100
587	+ (wc4 - '0') * 1000;
588	return 5;
589	}
590	if (!RT_C_IS_DIGIT(wc5) \|\| cwcName <= 6)
591	return 0;
592
593	/* -6: */
594	RTUTF16 wc6 = RT_BE2H_U16(pawcName[cwcName - 6]);
595	if (wc6 == ';')
596	{
597	*puValue = (wc1 - '0')
598	+ (wc2 - '0') * 10
599	+ (wc3 - '0') * 100
600	+ (wc4 - '0') * 1000
601	+ (wc5 - '0') * 10000;
602	return 6;
603	}
604	return 0;
605	}
606
607
608	/**
609	* Returns the length of the version suffix in the given name.
610	*
611	* @returns Number of chars in the version suffix.
612	* @param pachName The name to examine.
613	* @param cchName The length of the name.
614	* @param puValue Where to return the value.
615	*/
616	static size_t rtFsIso9660GetVersionLengthAscii(const char pachName, size_t cchName, uint32_t puValue)
617	{
618	*puValue = 0;
619
620	/* -1: */
621	if (cchName <= 2)
622	return 0;
623	char ch1 = pachName[cchName - 1];
624	if (!RT_C_IS_DIGIT(ch1))
625	return 0;
626
627	/* -2: */
628	char ch2 = pachName[cchName - 2];
629	if (ch2 == ';')
630	{
631	*puValue = ch1 - '0';
632	return 2;
633	}
634	if (!RT_C_IS_DIGIT(ch2) \|\| cchName <= 3)
635	return 0;
636
637	/* -3: */
638	char ch3 = pachName[cchName - 3];
639	if (ch3 == ';')
640	{
641	*puValue = (ch1 - '0')
642	+ (ch2 - '0') * 10;
643	return 3;
644	}
645	if (!RT_C_IS_DIGIT(ch3) \|\| cchName <= 4)
646	return 0;
647
648	/* -4: */
649	char ch4 = pachName[cchName - 4];
650	if (ch4 == ';')
651	{
652	*puValue = (ch1 - '0')
653	+ (ch2 - '0') * 10
654	+ (ch3 - '0') * 100;
655	return 4;
656	}
657	if (!RT_C_IS_DIGIT(ch4) \|\| cchName <= 5)
658	return 0;
659
660	/* -5: */
661	char ch5 = pachName[cchName - 5];
662	if (ch5 == ';')
663	{
664	*puValue = (ch1 - '0')
665	+ (ch2 - '0') * 10
666	+ (ch3 - '0') * 100
667	+ (ch4 - '0') * 1000;
668	return 5;
669	}
670	if (!RT_C_IS_DIGIT(ch5) \|\| cchName <= 6)
671	return 0;
672
673	/* -6: */
674	if (pachName[cchName - 6] == ';')
675	{
676	*puValue = (ch1 - '0')
677	+ (ch2 - '0') * 10
678	+ (ch3 - '0') * 100
679	+ (ch4 - '0') * 1000
680	+ (ch5 - '0') * 10000;
681	return 6;
682	}
683	return 0;
684	}
685
686
687	/**
688	* Converts an ISO 9660 binary timestamp into an IPRT timesspec.
689	*
690	* @param pTimeSpec Where to return the IRPT time.
691	* @param pIso9660 The ISO 9660 binary timestamp.
692	*/
693	static void rtFsIso9660DateTime2TimeSpec(PRTTIMESPEC pTimeSpec, PCISO9660RECTIMESTAMP pIso9660)
694	{
695	RTTIME Time;
696	Time.fFlags = RTTIME_FLAGS_TYPE_UTC;
697	Time.offUTC = 0;
698	Time.i32Year = pIso9660->bYear + 1900;
699	Time.u8Month = RT_MIN(RT_MAX(pIso9660->bMonth, 1), 12);
700	Time.u8MonthDay = RT_MIN(RT_MAX(pIso9660->bDay, 1), 31);
701	Time.u8WeekDay = UINT8_MAX;
702	Time.u16YearDay = 0;
703	Time.u8Hour = RT_MIN(pIso9660->bHour, 23);
704	Time.u8Minute = RT_MIN(pIso9660->bMinute, 59);
705	Time.u8Second = RT_MIN(pIso9660->bSecond, 59);
706	Time.u32Nanosecond = 0;
707	RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time));
708
709	/* Only apply the UTC offset if it's within reasons. */
710	if (RT_ABS(pIso9660->offUtc) <= 13*4)
711	RTTimeSpecSubSeconds(pTimeSpec, pIso9660->offUtc * 15 * 60 * 60);
712	}
713
714
715	/**
716	* Converts an UDF timestamp into an IPRT timesspec.
717	*
718	* @param pTimeSpec Where to return the IRPT time.
719	* @param pUdf The UDF timestamp.
720	*/
721	static void rtFsIsoUdfTimestamp2TimeSpec(PRTTIMESPEC pTimeSpec, PCUDFTIMESTAMP pUdf)
722	{
723	/* Check the year range before we try convert anything as it's quite possible
724	that this is zero. */
725	if ( pUdf->iYear > 1678
726	&& pUdf->iYear < 2262)
727	{
728	RTTIME Time;
729	Time.fFlags = RTTIME_FLAGS_TYPE_UTC;
730	Time.offUTC = 0;
731	Time.i32Year = pUdf->iYear;
732	Time.u8Month = RT_MIN(RT_MAX(pUdf->uMonth, 1), 12);
733	Time.u8MonthDay = RT_MIN(RT_MAX(pUdf->uDay, 1), 31);
734	Time.u8WeekDay = UINT8_MAX;
735	Time.u16YearDay = 0;
736	Time.u8Hour = RT_MIN(pUdf->uHour, 23);
737	Time.u8Minute = RT_MIN(pUdf->uMinute, 59);
738	Time.u8Second = RT_MIN(pUdf->uSecond, 59);
739	Time.u32Nanosecond = pUdf->cCentiseconds * UINT32_C(10000000)
740	+ pUdf->cHundredsOfMicroseconds * UINT32_C(100000)
741	+ pUdf->cMicroseconds * UINT32_C(1000);
742	RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time));
743
744	/* Only apply the UTC offset if it's within reasons. */
745	if (RT_ABS(pUdf->offUtcInMin) <= 13*60)
746	RTTimeSpecSubSeconds(pTimeSpec, pUdf->offUtcInMin * 60);
747	}
748	else
749	RTTimeSpecSetNano(pTimeSpec, 0);
750	}
751
752
753	/**
754	* Initialization of a RTFSISOCORE structure from a directory record.
755	*
756	* @note The RTFSISOCORE::pParentDir and RTFSISOCORE::Clusters members are
757	* properly initialized elsewhere.
758	*
759	* @returns IRPT status code. Either VINF_SUCCESS or VERR_NO_MEMORY, the latter
760	* only if @a cDirRecs is above 1.
761	* @param pCore The structure to initialize.
762	* @param pDirRec The primary directory record.
763	* @param cDirRecs Number of directory records.
764	* @param offDirRec The offset of the primary directory record.
765	* @param uVersion The file version number.
766	* @param pVol The volume.
767	*/
768	static int rtFsIsoCore_InitFrom9660DirRec(PRTFSISOCORE pCore, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
769	uint64_t offDirRec, uint32_t uVersion, PRTFSISOVOL pVol)
770	{
771	RTListInit(&pCore->Entry);
772	pCore->cRefs = 1;
773	pCore->pParentDir = NULL;
774	pCore->pVol = pVol;
775	pCore->offDirRec = offDirRec;
776	pCore->idINode = offDirRec;
777	pCore->fAttrib = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY
778	? 0755 \| RTFS_TYPE_DIRECTORY \| RTFS_DOS_DIRECTORY
779	: 0644 \| RTFS_TYPE_FILE;
780	if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_HIDDEN)
781	pCore->fAttrib \|= RTFS_DOS_HIDDEN;
782	pCore->cbObject = ISO9660_GET_ENDIAN(&pDirRec->cbData);
783	pCore->uVersion = uVersion;
784	pCore->cExtents = 1;
785	pCore->FirstExtent.cbExtent = pCore->cbObject;
786	pCore->FirstExtent.off = (ISO9660_GET_ENDIAN(&pDirRec->offExtent) + pDirRec->cExtAttrBlocks) * (uint64_t)pVol->cbBlock;
787	pCore->FirstExtent.idxPart = UINT32_MAX;
788	pCore->FirstExtent.uReserved = 0;
789
790	rtFsIso9660DateTime2TimeSpec(&pCore->ModificationTime, &pDirRec->RecTime);
791	pCore->BirthTime = pCore->ModificationTime;
792	pCore->AccessTime = pCore->ModificationTime;
793	pCore->ChangeTime = pCore->ModificationTime;
794
795	/*
796	* Deal with multiple extents.
797	*/
798	if (RT_LIKELY(cDirRecs == 1))
799	{ /* done */ }
800	else
801	{
802	PRTFSISOEXTENT pCurExtent = &pCore->FirstExtent;
803	while (cDirRecs > 1)
804	{
805	offDirRec += pDirRec->cbDirRec;
806	pDirRec = (PCISO9660DIRREC)((uintptr_t)pDirRec + pDirRec->cbDirRec);
807	if (pDirRec->cbDirRec != 0)
808	{
809	uint64_t offDisk = ISO9660_GET_ENDIAN(&pDirRec->offExtent) * (uint64_t)pVol->cbBlock;
810	uint32_t cbExtent = ISO9660_GET_ENDIAN(&pDirRec->cbData);
811	pCore->cbObject += cbExtent;
812
813	if (pCurExtent->off + pCurExtent->cbExtent == offDisk)
814	pCurExtent->cbExtent += cbExtent;
815	else
816	{
817	void pvNew = RTMemRealloc(pCore->paExtents, pCore->cExtents sizeof(pCore->paExtents[0]));
818	if (pvNew)
819	pCore->paExtents = (PRTFSISOEXTENT)pvNew;
820	else
821	{
822	RTMemFree(pCore->paExtents);
823	return VERR_NO_MEMORY;
824	}
825	pCurExtent = &pCore->paExtents[pCore->cExtents - 1];
826	pCurExtent->cbExtent = cbExtent;
827	pCurExtent->off = offDisk;
828	pCurExtent->idxPart = UINT32_MAX;
829	pCurExtent->uReserved = 0;
830	pCore->cExtents++;
831	}
832	cDirRecs--;
833	}
834	else
835	{
836	uint64_t cbSkip = (offDirRec + pVol->cbSector) & ~(uint64_t)(pVol->cbSector - 1U);
837	offDirRec += cbSkip;
838	pDirRec = (PCISO9660DIRREC)((uintptr_t)pDirRec + (size_t)cbSkip);
839	}
840	}
841	}
842	return VINF_SUCCESS;
843	}
844
845
846	/**
847	* Initalizes the allocation extends of a core structure.
848	*
849	* @returns IPRT status code
850	* @param pCore The core structure.
851	* @param pbAllocDescs Pointer to the allocation descriptor data.
852	* @param cbAllocDescs The size of the allocation descriptor data.
853	* @param fIcbTagFlags The ICB tag flags.
854	* @param idxDefaultPart The default data partition.
855	* @param offAllocDescs The disk byte offset corresponding to @a pbAllocDesc
856	* in case it's used as data storage (type 3).
857	* @param pVol The volume instance data.
858	*/
859	static int rtFsIsoCore_InitExtentsUdfIcbEntry(PRTFSISOCORE pCore, uint8_t const *pbAllocDescs, uint32_t cbAllocDescs,
860	uint32_t fIcbTagFlags, uint32_t idxDefaultPart, uint64_t offAllocDescs,
861	PRTFSISOVOL pVol)
862	{
863	/*
864	* Just in case there are mutiple file entries in the ICB.
865	*/
866	if (pCore->paExtents != NULL)
867	{
868	LogRelMax(45, ("ISO/UDF: Re-reading extents - multiple file entries?\n"));
869	RTMemFree(pCore->paExtents);
870	pCore->paExtents = NULL;
871	}
872
873	/*
874	* Figure the (minimal) size of an allocation descriptor, deal with the
875	* embedded storage and invalid descriptor types.
876	*/
877	uint32_t cbOneDesc;
878	switch (fIcbTagFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
879	{
880	case UDF_ICB_FLAGS_AD_TYPE_EMBEDDED:
881	pCore->cExtents = 1;
882	pCore->FirstExtent.cbExtent = cbAllocDescs;
883	pCore->FirstExtent.off = offAllocDescs;
884	pCore->FirstExtent.idxPart = idxDefaultPart;
885	return VINF_SUCCESS;
886
887	case UDF_ICB_FLAGS_AD_TYPE_SHORT: cbOneDesc = sizeof(UDFSHORTAD); break;
888	case UDF_ICB_FLAGS_AD_TYPE_LONG: cbOneDesc = sizeof(UDFLONGAD); break;
889	case UDF_ICB_FLAGS_AD_TYPE_EXTENDED: cbOneDesc = sizeof(UDFEXTAD); break;
890
891	default:
892	LogRelMax(45, ("ISO/UDF: Unknown allocation descriptor type %#x\n", fIcbTagFlags));
893	return VERR_ISO_FS_UNKNOWN_AD_TYPE;
894	}
895	if (cbAllocDescs >= cbOneDesc)
896	{
897	/*
898	* Loop thru the allocation descriptors.
899	*/
900	PRTFSISOEXTENT pCurExtent = NULL;
901	union
902	{
903	uint8_t const *pb;
904	PCUDFSHORTAD pShort;
905	PCUDFLONGAD pLong;
906	PCUDFEXTAD pExt;
907	} uPtr;
908	uPtr.pb = pbAllocDescs;
909	do
910	{
911	/* Extract the information we need from the descriptor. */
912	uint32_t idxBlock;
913	uint32_t idxPart;
914	uint32_t cb;
915	uint8_t uType;
916	switch (fIcbTagFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
917	{
918	case UDF_ICB_FLAGS_AD_TYPE_SHORT:
919	uType = uPtr.pShort->uType;
920	cb = uPtr.pShort->cb;
921	idxBlock = uPtr.pShort->off;
922	idxPart = idxDefaultPart;
923	cbAllocDescs -= sizeof(*uPtr.pShort);
924	uPtr.pShort++;
925	break;
926	case UDF_ICB_FLAGS_AD_TYPE_LONG:
927	uType = uPtr.pLong->uType;
928	cb = uPtr.pLong->cb;
929	idxBlock = uPtr.pLong->Location.off;
930	idxPart = uPtr.pLong->Location.uPartitionNo;
931	cbAllocDescs -= sizeof(*uPtr.pLong);
932	uPtr.pLong++;
933	break;
934	case UDF_ICB_FLAGS_AD_TYPE_EXTENDED:
935	if ( uPtr.pExt->cbInformation > cbAllocDescs
936	\|\| uPtr.pExt->cbInformation < sizeof(*uPtr.pExt))
937	return VERR_ISOFS_BAD_EXTAD;
938	uType = uPtr.pExt->uType;
939	cb = uPtr.pExt->cb;
940	idxBlock = uPtr.pExt->Location.off;
941	idxPart = uPtr.pExt->Location.uPartitionNo;
942	cbAllocDescs -= uPtr.pExt->cbInformation;
943	uPtr.pb += uPtr.pExt->cbInformation;
944	break;
945	default:
946	AssertFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE);
947	}
948
949	/* Check if we can extend the current extent. This is useful since
950	the descriptors can typically only cover 1GB. */
951	uint64_t const off = (uint64_t)idxBlock << pVol->Udf.VolInfo.cShiftBlock;
952	if ( pCurExtent != NULL
953	&& ( pCurExtent->off != UINT64_MAX
954	? uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED
955	&& pCurExtent->off + pCurExtent->cbExtent == off
956	&& pCurExtent->idxPart == idxPart
957	: uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED) )
958	pCurExtent->cbExtent += cb;
959	else
960	{
961	/* Allocate a new descriptor. */
962	if (pCore->cExtents == 0)
963	{
964	pCore->cExtents = 1;
965	pCurExtent = &pCore->FirstExtent;
966	}
967	else
968	{
969	void pvNew = RTMemRealloc(pCore->paExtents, pCore->cExtents sizeof(pCore->paExtents[0]));
970	if (pvNew)
971	pCore->paExtents = (PRTFSISOEXTENT)pvNew;
972	else
973	{
974	RTMemFree(pCore->paExtents);
975	pCore->paExtents = NULL;
976	pCore->cExtents = 0;
977	return VERR_NO_MEMORY;
978	}
979	pCurExtent = &pCore->paExtents[pCore->cExtents - 1];
980	pCore->cExtents++;
981	}
982
983	/* Initialize it. */
984	if (uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
985	{
986	pCurExtent->off = off;
987	pCurExtent->idxPart = idxPart;
988	}
989	else
990	{
991	pCurExtent->off = UINT64_MAX;
992	pCurExtent->idxPart = UINT32_MAX;
993	}
994	pCurExtent->cbExtent = cb;
995	pCurExtent->uReserved = 0;
996	}
997	} while (cbAllocDescs >= cbOneDesc);
998
999	if (cbAllocDescs > 0)
1000	LogRelMax(45,("ISO/UDF: Warning! %u bytes left in allocation descriptor: %.*Rhxs\n", cbAllocDescs, cbAllocDescs, uPtr.pb));
1001	}
1002	else
1003	{
1004	/*
1005	* Zero descriptors
1006	*/
1007	pCore->cExtents = 0;
1008	pCore->FirstExtent.off = UINT64_MAX;
1009	pCore->FirstExtent.cbExtent = 0;
1010	pCore->FirstExtent.idxPart = UINT32_MAX;
1011
1012	if (cbAllocDescs > 0)
1013	LogRelMax(45, ("ISO/UDF: Warning! Allocation descriptor area is shorted than one descriptor: %#u vs %#u: %.*Rhxs\n",
1014	cbAllocDescs, cbOneDesc, cbAllocDescs, pbAllocDescs));
1015	}
1016	return VINF_SUCCESS;
1017	}
1018
1019
1020	/**
1021	* Converts ICB flags, ICB file type and file entry permissions to an IPRT file
1022	* mode mask.
1023	*
1024	* @returns IPRT status ocde
1025	* @param fIcbTagFlags The ICB flags.
1026	* @param bFileType The ICB file type.
1027	* @param fPermission The file entry permission mask.
1028	* @param pfAttrib Where to return the IRPT file mode mask.
1029	*/
1030	static int rtFsIsoCore_UdfStuffToFileMode(uint32_t fIcbTagFlags, uint8_t bFileType, uint32_t fPermission, PRTFMODE pfAttrib)
1031	{
1032	/*
1033	* Type:
1034	*/
1035	RTFMODE fAttrib;
1036	switch (bFileType)
1037	{
1038	case UDF_FILE_TYPE_DIRECTORY:
1039	fAttrib = RTFS_TYPE_DIRECTORY \| RTFS_DOS_DIRECTORY;
1040	break;
1041
1042	case UDF_FILE_TYPE_REGULAR_FILE:
1043	case UDF_FILE_TYPE_REAL_TIME_FILE:
1044	fAttrib = RTFS_TYPE_FILE;
1045	break;
1046
1047	case UDF_FILE_TYPE_SYMBOLIC_LINK:
1048	fAttrib = RTFS_TYPE_SYMLINK;
1049	break;
1050
1051	case UDF_FILE_TYPE_BLOCK_DEVICE:
1052	fAttrib = RTFS_TYPE_DEV_BLOCK;
1053	break;
1054	case UDF_FILE_TYPE_CHARACTER_DEVICE:
1055	fAttrib = RTFS_TYPE_DEV_CHAR;
1056	break;
1057
1058	case UDF_FILE_TYPE_FIFO:
1059	fAttrib = RTFS_TYPE_FIFO;
1060	break;
1061
1062	case UDF_FILE_TYPE_SOCKET:
1063	fAttrib = RTFS_TYPE_SOCKET;
1064	break;
1065
1066	case UDF_FILE_TYPE_STREAM_DIRECTORY:
1067	case UDF_FILE_TYPE_EXTENDED_ATTRIBUTES:
1068	case UDF_FILE_TYPE_TERMINAL_ENTRY:
1069	case UDF_FILE_TYPE_VAT:
1070	case UDF_FILE_TYPE_METADATA_FILE:
1071	case UDF_FILE_TYPE_METADATA_MIRROR_FILE:
1072	case UDF_FILE_TYPE_METADATA_BITMAP_FILE:
1073	case UDF_FILE_TYPE_NOT_SPECIFIED:
1074	case UDF_FILE_TYPE_INDIRECT_ENTRY:
1075	case UDF_FILE_TYPE_UNALLOCATED_SPACE_ENTRY:
1076	case UDF_FILE_TYPE_PARTITION_INTEGRITY_ENTRY:
1077	LogRelMax(45, ("ISO/UDF: Warning! Wrong file type: %#x\n", bFileType));
1078	return VERR_ISOFS_WRONG_FILE_TYPE;
1079
1080	default:
1081	LogRelMax(45, ("ISO/UDF: Warning! Unknown file type: %#x\n", bFileType));
1082	return VERR_ISOFS_UNKNOWN_FILE_TYPE;
1083	}
1084
1085	/*
1086	* Permissions:
1087	*/
1088	if (fPermission & UDF_PERM_OTH_EXEC)
1089	fAttrib \|= RTFS_UNIX_IXOTH;
1090	if (fPermission & UDF_PERM_OTH_READ)
1091	fAttrib \|= RTFS_UNIX_IROTH;
1092	if (fPermission & UDF_PERM_OTH_WRITE)
1093	fAttrib \|= RTFS_UNIX_IWOTH;
1094
1095	if (fPermission & UDF_PERM_GRP_EXEC)
1096	fAttrib \|= RTFS_UNIX_IXGRP;
1097	if (fPermission & UDF_PERM_GRP_READ)
1098	fAttrib \|= RTFS_UNIX_IRGRP;
1099	if (fPermission & UDF_PERM_GRP_WRITE)
1100	fAttrib \|= RTFS_UNIX_IWGRP;
1101
1102	if (fPermission & UDF_PERM_USR_EXEC)
1103	fAttrib \|= RTFS_UNIX_IXUSR;
1104	if (fPermission & UDF_PERM_USR_READ)
1105	fAttrib \|= RTFS_UNIX_IRUSR;
1106	if (fPermission & UDF_PERM_USR_WRITE)
1107	fAttrib \|= RTFS_UNIX_IWUSR;
1108
1109	if ( !(fAttrib & (UDF_PERM_OTH_WRITE \| UDF_PERM_GRP_WRITE \| UDF_PERM_USR_WRITE))
1110	&& (fAttrib & (UDF_PERM_OTH_READ \| UDF_PERM_GRP_READ \| UDF_PERM_USR_READ)) )
1111	fAttrib \|= RTFS_DOS_READONLY;
1112
1113	/*
1114	* Attributes:
1115	*/
1116	if (fIcbTagFlags & UDF_ICB_FLAGS_ARCHIVE)
1117	fAttrib \|= RTFS_DOS_ARCHIVED;
1118	if (fIcbTagFlags & UDF_ICB_FLAGS_SYSTEM)
1119	fAttrib \|= RTFS_DOS_SYSTEM;
1120	if (fIcbTagFlags & UDF_ICB_FLAGS_ARCHIVE)
1121	fAttrib \|= RTFS_DOS_ARCHIVED;
1122
1123	if (fIcbTagFlags & UDF_ICB_FLAGS_SET_UID)
1124	fAttrib \|= RTFS_UNIX_ISUID;
1125	if (fIcbTagFlags & UDF_ICB_FLAGS_SET_GID)
1126	fAttrib \|= RTFS_UNIX_ISGID;
1127	if (fIcbTagFlags & UDF_ICB_FLAGS_STICKY)
1128	fAttrib \|= RTFS_UNIX_ISTXT;
1129
1130	/* Warn about weird flags. */
1131	if (fIcbTagFlags & UDF_ICB_FLAGS_TRANSFORMED)
1132	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_TRANSFORMED!\n"));
1133	if (fIcbTagFlags & UDF_ICB_FLAGS_MULTI_VERSIONS)
1134	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_MULTI_VERSIONS!\n"));
1135	if (fIcbTagFlags & UDF_ICB_FLAGS_STREAM)
1136	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_STREAM!\n"));
1137	if (fIcbTagFlags & UDF_ICB_FLAGS_RESERVED_MASK)
1138	LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_RESERVED_MASK (%#x)!\n", fIcbTagFlags & UDF_ICB_FLAGS_RESERVED_MASK));
1139
1140	*pfAttrib = fAttrib;
1141	return VINF_SUCCESS;
1142	}
1143
1144
1145	/**
1146	* Initialize/update a core object structure from an UDF extended file entry.
1147	*
1148	* @returns IPRT status code
1149	* @param pCore The core object structure to initialize.
1150	* @param pFileEntry The file entry.
1151	* @param idxDefaultPart The default data partition.
1152	* @param pcProcessed Variable to increment on success.
1153	* @param pVol The volume instance.
1154	*/
1155	static int rtFsIsoCore_InitFromUdfIcbExFileEntry(PRTFSISOCORE pCore, PCUDFEXFILEENTRY pFileEntry, uint32_t idxDefaultPart,
1156	uint32_t *pcProcessed, PRTFSISOVOL pVol)
1157	{
1158	#ifdef LOG_ENABLED
1159	/*
1160	* Log it.
1161	*/
1162	if (LogIs2Enabled())
1163	{
1164	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", IcbTag.cEntiresBeforeThis);
1165	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.uStrategyType);
1166	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[0]);
1167	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[1]);
1168	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.cMaxEntries);
1169	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bReserved);
1170	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bFileType);
1171	UDF_LOG2_MEMBER_LBADDR(pFileEntry, IcbTag.ParentIcb);
1172	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.fFlags);
1173	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uid);
1174	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", gid);
1175	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", fPermissions);
1176	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", cHardlinks);
1177	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", uRecordFormat);
1178	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", fRecordDisplayAttribs);
1179	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbRecord);
1180	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbData);
1181	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbObject);
1182	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cLogicalBlocks);
1183	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, AccessTime);
1184	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ModificationTime);
1185	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, BirthTime);
1186	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ChangeTime);
1187	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uCheckpoint);
1188	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uReserved);
1189	UDF_LOG2_MEMBER_LONGAD(pFileEntry, ExtAttribIcb);
1190	UDF_LOG2_MEMBER_LONGAD(pFileEntry, StreamDirIcb);
1191	UDF_LOG2_MEMBER_ENTITY_ID(pFileEntry, idImplementation);
1192	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", INodeId);
1193	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbExtAttribs);
1194	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbAllocDescs);
1195	if (pFileEntry->cbExtAttribs > 0)
1196	Log2((pFileEntry->cbExtAttribs <= 16 ? "ISO/UDF: %-32s %.Rhxs\n" : "ISO/UDF: %-32s\n%.RhxD\n",
1197	"abExtAttribs:", pFileEntry->cbExtAttribs, pFileEntry->abExtAttribs));
1198	if (pFileEntry->cbAllocDescs > 0)
1199	switch (pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
1200	{
1201	case UDF_ICB_FLAGS_AD_TYPE_SHORT:
1202	{
1203	PCUDFSHORTAD paDescs = (PCUDFSHORTAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1204	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1205	for (uint32_t i = 0; i < cDescs; i++)
1206	Log2(("ISO/UDF: ShortAD[%u]: %#010RX32 LB %#010RX32; type=%u\n",
1207	i, paDescs[i].off, paDescs[i].cb, paDescs[i].uType));
1208	break;
1209	}
1210	case UDF_ICB_FLAGS_AD_TYPE_LONG:
1211	{
1212	PCUDFLONGAD paDescs = (PCUDFLONGAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1213	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1214	for (uint32_t i = 0; i < cDescs; i++)
1215	Log2(("ISO/UDF: LongAD[%u]: %#06RX16:%#010RX32 LB %#010RX32; type=%u iu=%.6Rhxs\n",
1216	i, paDescs[i].Location.uPartitionNo, paDescs[i].Location.off,
1217	paDescs[i].cb, paDescs[i].uType, &paDescs[i].ImplementationUse));
1218	break;
1219	}
1220	default:
1221	Log2(("ISO/UDF: %-32s Type=%u\n%.*RhxD\n",
1222	"abExtAttribs:", pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK,
1223	pFileEntry->cbAllocDescs, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]));
1224	break;
1225	}
1226	}
1227	#endif
1228
1229	/*
1230	* Basic sanity checking of what we use.
1231	*/
1232	if ( RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs + pFileEntry->cbAllocDescs
1233	> pVol->Udf.VolInfo.cbBlock
1234	\|\| (pFileEntry->cbExtAttribs & 3) != 0
1235	\|\| pFileEntry->cbExtAttribs >= pVol->Udf.VolInfo.cbBlock
1236	\|\| (pFileEntry->cbAllocDescs & 3) != 0
1237	\|\| pFileEntry->cbAllocDescs >= pVol->Udf.VolInfo.cbBlock)
1238	{
1239	LogRelMax(45, ("ISO/UDF: Extended file entry (ICB) is bad size values: cbAllocDesc=%#x cbExtAttribs=%#x (cbBlock=%#x)\n",
1240	pFileEntry->cbAllocDescs, pFileEntry->cbExtAttribs, pVol->Udf.VolInfo.cbBlock));
1241	return VERR_ISOFS_BAD_FILE_ENTRY;
1242	}
1243
1244	//pCore->uid = pFileEntry->uid;
1245	//pCore->gid = pFileEntry->gid;
1246	//pCore->cHardlinks = RT_MIN(pFileEntry->cHardlinks, 1);
1247	pCore->cbObject = pFileEntry->cbData;
1248	//pCore->cbAllocated = pFileEntry->cLogicalBlocks << pVol->Udf.VolInfo.cShiftBlock;
1249	pCore->idINode = pFileEntry->INodeId;
1250
1251	rtFsIsoUdfTimestamp2TimeSpec(&pCore->AccessTime, &pFileEntry->AccessTime);
1252	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ModificationTime, &pFileEntry->ModificationTime);
1253	rtFsIsoUdfTimestamp2TimeSpec(&pCore->BirthTime, &pFileEntry->BirthTime);
1254	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ChangeTime, &pFileEntry->ChangeTime);
1255
1256	if ( pFileEntry->uRecordFormat
1257	\|\| pFileEntry->fRecordDisplayAttribs
1258	\|\| pFileEntry->cbRecord)
1259	LogRelMax(45, ("ISO/UDF: uRecordFormat=%#x fRecordDisplayAttribs=%#x cbRecord=%#x\n",
1260	pFileEntry->uRecordFormat, pFileEntry->fRecordDisplayAttribs, pFileEntry->cbRecord));
1261
1262	/*
1263	* Conver the file mode.
1264	*/
1265	int rc = rtFsIsoCore_UdfStuffToFileMode(pFileEntry->IcbTag.fFlags, pFileEntry->IcbTag.bFileType,
1266	pFileEntry->fPermissions, &pCore->fAttrib);
1267	if (RT_SUCCESS(rc))
1268	{
1269	/*
1270	* Convert extent info.
1271	*/
1272	rc = rtFsIsoCore_InitExtentsUdfIcbEntry(pCore,
1273	&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs],
1274	pFileEntry->cbAllocDescs,
1275	pFileEntry->IcbTag.fFlags,
1276	idxDefaultPart,
1277	((uint64_t)pFileEntry->Tag.offTag << pVol->Udf.VolInfo.cShiftBlock)
1278	+ RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs,
1279	pVol);
1280	if (RT_SUCCESS(rc))
1281	{
1282	/*
1283	* We're good.
1284	*/
1285	*pcProcessed += 1;
1286	return VINF_SUCCESS;
1287	}
1288
1289	/* Just in case. */
1290	if (pCore->paExtents)
1291	{
1292	RTMemFree(pCore->paExtents);
1293	pCore->paExtents = NULL;
1294	}
1295	pCore->cExtents = 0;
1296	}
1297	return rc;
1298	}
1299
1300
1301	/**
1302	* Initialize/update a core object structure from an UDF file entry.
1303	*
1304	* @returns IPRT status code
1305	* @param pCore The core object structure to initialize.
1306	* @param pFileEntry The file entry.
1307	* @param idxDefaultPart The default data partition.
1308	* @param pcProcessed Variable to increment on success.
1309	* @param pVol The volume instance.
1310	*/
1311	static int rtFsIsoCore_InitFromUdfIcbFileEntry(PRTFSISOCORE pCore, PCUDFFILEENTRY pFileEntry, uint32_t idxDefaultPart,
1312	uint32_t *pcProcessed, PRTFSISOVOL pVol)
1313	{
1314	#ifdef LOG_ENABLED
1315	/*
1316	* Log it.
1317	*/
1318	if (LogIs2Enabled())
1319	{
1320	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", IcbTag.cEntiresBeforeThis);
1321	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.uStrategyType);
1322	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[0]);
1323	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[1]);
1324	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.cMaxEntries);
1325	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bReserved);
1326	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bFileType);
1327	UDF_LOG2_MEMBER_LBADDR(pFileEntry, IcbTag.ParentIcb);
1328	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.fFlags);
1329	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uid);
1330	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", gid);
1331	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", fPermissions);
1332	UDF_LOG2_MEMBER(pFileEntry, "#06RX16", cHardlinks);
1333	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", uRecordFormat);
1334	UDF_LOG2_MEMBER(pFileEntry, "#04RX8", fRecordDisplayAttribs);
1335	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbRecord);
1336	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbData);
1337	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cLogicalBlocks);
1338	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, AccessTime);
1339	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ModificationTime);
1340	UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ChangeTime);
1341	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uCheckpoint);
1342	UDF_LOG2_MEMBER_LONGAD(pFileEntry, ExtAttribIcb);
1343	UDF_LOG2_MEMBER_ENTITY_ID(pFileEntry, idImplementation);
1344	UDF_LOG2_MEMBER(pFileEntry, "#018RX64", INodeId);
1345	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbExtAttribs);
1346	UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbAllocDescs);
1347	if (pFileEntry->cbExtAttribs > 0)
1348	Log2((pFileEntry->cbExtAttribs <= 16 ? "ISO/UDF: %-32s %.Rhxs\n" : "ISO/UDF: %-32s\n%.RhxD\n",
1349	"abExtAttribs:", pFileEntry->cbExtAttribs, pFileEntry->abExtAttribs));
1350	if (pFileEntry->cbAllocDescs > 0)
1351	switch (pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK)
1352	{
1353	case UDF_ICB_FLAGS_AD_TYPE_SHORT:
1354	{
1355	PCUDFSHORTAD paDescs = (PCUDFSHORTAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1356	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1357	for (uint32_t i = 0; i < cDescs; i++)
1358	Log2(("ISO/UDF: ShortAD[%u]: %#010RX32 LB %#010RX32; type=%u\n",
1359	i, paDescs[i].off, paDescs[i].cb, paDescs[i].uType));
1360	break;
1361	}
1362	case UDF_ICB_FLAGS_AD_TYPE_LONG:
1363	{
1364	PCUDFLONGAD paDescs = (PCUDFLONGAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs];
1365	uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]);
1366	for (uint32_t i = 0; i < cDescs; i++)
1367	Log2(("ISO/UDF: LongAD[%u]: %#06RX16:%#010RX32 LB %#010RX32; type=%u iu=%.6Rhxs\n",
1368	i, paDescs[i].Location.uPartitionNo, paDescs[i].Location.off,
1369	paDescs[i].cb, paDescs[i].uType, &paDescs[i].ImplementationUse));
1370	break;
1371	}
1372	default:
1373	Log2(("ISO/UDF: %-32s Type=%u\n%.*RhxD\n",
1374	"abExtAttribs:", pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK,
1375	pFileEntry->cbAllocDescs, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]));
1376	break;
1377	}
1378	}
1379	#endif
1380
1381	/*
1382	* Basic sanity checking of what we use.
1383	*/
1384	if ( RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs + pFileEntry->cbAllocDescs
1385	> pVol->Udf.VolInfo.cbBlock
1386	\|\| (pFileEntry->cbExtAttribs & 3) != 0
1387	\|\| pFileEntry->cbExtAttribs >= pVol->Udf.VolInfo.cbBlock
1388	\|\| (pFileEntry->cbAllocDescs & 3) != 0
1389	\|\| pFileEntry->cbAllocDescs >= pVol->Udf.VolInfo.cbBlock)
1390	{
1391	LogRelMax(45, ("ISO/UDF: File entry (ICB) is bad size values: cbAllocDesc=%#x cbExtAttribs=%#x (cbBlock=%#x)\n",
1392	pFileEntry->cbAllocDescs, pFileEntry->cbExtAttribs, pVol->Udf.VolInfo.cbBlock));
1393	return VERR_ISOFS_BAD_FILE_ENTRY;
1394	}
1395
1396	//pCore->uid = pFileEntry->uid;
1397	//pCore->gid = pFileEntry->gid;
1398	//pCore->cHardlinks = RT_MIN(pFileEntry->cHardlinks, 1);
1399	pCore->cbObject = pFileEntry->cbData;
1400	//pCore->cbAllocated = pFileEntry->cLogicalBlocks << pVol->Udf.VolInfo.cShiftBlock;
1401	pCore->idINode = pFileEntry->INodeId;
1402
1403	rtFsIsoUdfTimestamp2TimeSpec(&pCore->AccessTime, &pFileEntry->AccessTime);
1404	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ModificationTime, &pFileEntry->ModificationTime);
1405	rtFsIsoUdfTimestamp2TimeSpec(&pCore->ChangeTime, &pFileEntry->ChangeTime);
1406	pCore->BirthTime = pCore->ModificationTime;
1407	if (RTTimeSpecCompare(&pCore->BirthTime, &pCore->ChangeTime) > 0)
1408	pCore->BirthTime = pCore->ChangeTime;
1409	if (RTTimeSpecCompare(&pCore->BirthTime, &pCore->AccessTime) > 0)
1410	pCore->BirthTime = pCore->AccessTime;
1411
1412	if ( pFileEntry->uRecordFormat
1413	\|\| pFileEntry->fRecordDisplayAttribs
1414	\|\| pFileEntry->cbRecord)
1415	LogRelMax(45, ("ISO/UDF: uRecordFormat=%#x fRecordDisplayAttribs=%#x cbRecord=%#x\n",
1416	pFileEntry->uRecordFormat, pFileEntry->fRecordDisplayAttribs, pFileEntry->cbRecord));
1417
1418	/*
1419	* Conver the file mode.
1420	*/
1421	int rc = rtFsIsoCore_UdfStuffToFileMode(pFileEntry->IcbTag.fFlags, pFileEntry->IcbTag.bFileType,
1422	pFileEntry->fPermissions, &pCore->fAttrib);
1423	if (RT_SUCCESS(rc))
1424	{
1425	/*
1426	* Convert extent info.
1427	*/
1428	rc = rtFsIsoCore_InitExtentsUdfIcbEntry(pCore,
1429	&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs],
1430	pFileEntry->cbAllocDescs,
1431	pFileEntry->IcbTag.fFlags,
1432	idxDefaultPart,
1433	((uint64_t)pFileEntry->Tag.offTag << pVol->Udf.VolInfo.cShiftBlock)
1434	+ RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs,
1435	pVol);
1436	if (RT_SUCCESS(rc))
1437	{
1438	/*
1439	* We're good.
1440	*/
1441	*pcProcessed += 1;
1442	return VINF_SUCCESS;
1443	}
1444
1445	/* Just in case. */
1446	if (pCore->paExtents)
1447	{
1448	RTMemFree(pCore->paExtents);
1449	pCore->paExtents = NULL;
1450	}
1451	pCore->cExtents = 0;
1452	}
1453	return rc;
1454	}
1455
1456
1457	/**
1458	* Recursive helper for rtFsIsoCore_InitFromUdfIcbAndFileIdDesc.
1459	*
1460	* @returns IRPT status code.
1461	* @param pCore The core structure to initialize.
1462	* @param AllocDesc The ICB allocation descriptor.
1463	* @param pbBuf The buffer, one logical block in size.
1464	* @param cNestings The number of recursive nestings (should be zero).
1465	* @param pcProcessed Variable to update when we've processed something
1466	* useful.
1467	* @param pcIndirections Variable tracing the number of indirections we've
1468	* taken during the processing. This is used to
1469	* prevent us from looping forever on a bad chain
1470	* @param pVol The volue instance data.
1471	*/
1472	static int rtFsIsoCore_InitFromUdfIcbRecursive(PRTFSISOCORE pCore, UDFLONGAD AllocDesc, uint8_t *pbBuf, uint32_t cNestings,
1473	uint32_t pcProcessed, uint32_t pcIndirections, PRTFSISOVOL pVol)
1474	{
1475	if (cNestings >= 8)
1476	return VERR_ISOFS_TOO_DEEP_ICB_RECURSION;
1477
1478	for (;;)
1479	{
1480	if (*pcIndirections >= 32)
1481	return VERR_ISOFS_TOO_MANY_ICB_INDIRECTIONS;
1482
1483	/*
1484	* Check the basic validity of the allocation descriptor.
1485	*/
1486	if ( AllocDesc.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED
1487	&& AllocDesc.cb >= sizeof(UDFICBTAG) )
1488	{ /* likely */ }
1489	else if (AllocDesc.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
1490	{
1491	Log(("ISO/UDF: ICB has alloc type %d!\n", AllocDesc.uType));
1492	return VINF_SUCCESS;
1493	}
1494	else
1495	{
1496	LogRelMax(45, ("ISO/UDF: ICB is too small: %u bytes\n", AllocDesc.cb));
1497	return AllocDesc.cb == 0 ? VINF_SUCCESS : VERR_ISOFS_ICB_ENTRY_TOO_SMALL;
1498	}
1499
1500	/*
1501	* Process it block by block.
1502	*/
1503	uint32_t cBlocks = (AllocDesc.cb + pVol->Udf.VolInfo.cbBlock - 1) >> pVol->Udf.VolInfo.cShiftBlock;
1504	for (uint32_t idxBlock = 0; ; idxBlock++)
1505	{
1506	/*
1507	* Read a block
1508	*/
1509	size_t cbToRead = RT_MIN(pVol->Udf.VolInfo.cbBlock, AllocDesc.cb);
1510	int rc = rtFsIsoVolUdfVpRead(pVol, AllocDesc.Location.uPartitionNo, AllocDesc.Location.off + idxBlock, 0,
1511	pbBuf, cbToRead);
1512	if (RT_FAILURE(rc))
1513	return rc;
1514	if (cbToRead < pVol->Udf.VolInfo.cbBlock)
1515	RT_BZERO(&pbBuf[cbToRead], pVol->Udf.VolInfo.cbBlock - cbToRead);
1516
1517	/*
1518	* Verify the TAG.
1519	*/
1520	PUDFICBHDR pHdr = (PUDFICBHDR)pbBuf;
1521	rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pHdr->Tag, pVol->Udf.VolInfo.cbBlock, UINT16_MAX,
1522	AllocDesc.Location.off + idxBlock, NULL);
1523	if (RT_FAILURE(rc))
1524	return rc;
1525
1526	/*
1527	* Do specific processing.
1528	*/
1529	if (pHdr->Tag.idTag == UDF_TAG_ID_FILE_ENTRY)
1530	rc = rtFsIsoCore_InitFromUdfIcbFileEntry(pCore, (PCUDFFILEENTRY)pHdr, AllocDesc.Location.uPartitionNo,
1531	pcProcessed, pVol);
1532	else if (pHdr->Tag.idTag == UDF_TAG_ID_EXTENDED_FILE_ENTRY)
1533	rc = rtFsIsoCore_InitFromUdfIcbExFileEntry(pCore, (PCUDFEXFILEENTRY)pHdr, AllocDesc.Location.uPartitionNo,
1534	pcProcessed, pVol);
1535	else if (pHdr->Tag.idTag == UDF_TAG_ID_INDIRECT_ENTRY)
1536	{
1537	PUDFINDIRECTENTRY pIndir = (PUDFINDIRECTENTRY)pHdr;
1538	*pcIndirections += 1;
1539	if (pIndir->IndirectIcb.cb != 0)
1540	{
1541	if (idxBlock + 1 == cBlocks)
1542	{
1543	AllocDesc = pIndir->IndirectIcb;
1544	Log2(("ISO/UDF: ICB: Indirect entry - looping: %x:%#010RX32 LB %#x; uType=%d\n",
1545	AllocDesc.Location.uPartitionNo, AllocDesc.Location.off, AllocDesc.cb, AllocDesc.uType));
1546	break;
1547	}
1548	Log2(("ISO/UDF: ICB: Indirect entry - recursing: %x:%#010RX32 LB %#x; uType=%d\n",
1549	pIndir->IndirectIcb.Location.uPartitionNo, pIndir->IndirectIcb.Location.off,
1550	pIndir->IndirectIcb.cb, pIndir->IndirectIcb.uType));
1551	rc = rtFsIsoCore_InitFromUdfIcbRecursive(pCore, pIndir->IndirectIcb, pbBuf, cNestings,
1552	pcProcessed, pcIndirections, pVol);
1553	}
1554	else
1555	Log(("ISO/UDF: zero length indirect entry\n"));
1556	}
1557	else if (pHdr->Tag.idTag == UDF_TAG_ID_TERMINAL_ENTRY)
1558	{
1559	Log2(("ISO/UDF: Terminal ICB entry\n"));
1560	return VINF_SUCCESS;
1561	}
1562	else if (pHdr->Tag.idTag == UDF_TAG_ID_UNALLOCATED_SPACE_ENTRY)
1563	{
1564	Log2(("ISO/UDF: Unallocated space entry: skipping\n"));
1565	/* Ignore since we don't do writing (UDFUNALLOCATEDSPACEENTRY) */
1566	}
1567	else
1568	{
1569	LogRelMax(90, ("ISO/UDF: Unknown ICB type %#x\n", pHdr->Tag.idTag));
1570	return VERR_ISOFS_UNSUPPORTED_ICB;
1571	}
1572	if (RT_FAILURE(rc))
1573	return rc;
1574
1575	/*
1576	* Advance.
1577	*/
1578	if (idxBlock + 1 >= cBlocks)
1579	return VINF_SUCCESS;
1580	}
1581
1582	/* If we get here, we've jumped thru an indirect entry. */
1583	}
1584	/* never reached */
1585	}
1586
1587
1588
1589	/**
1590	* Initialize a core structure from an UDF ICB range and optionally a file ID.
1591	*
1592	* @returns IPRT status code.
1593	* @param pCore The core structure to initialize.
1594	* Caller must've ZEROed this structure!
1595	* @param pAllocDesc The ICB allocation descriptor.
1596	* @param pFid The file ID descriptor. Optional.
1597	* @param offInDir The offset of the file ID descriptor in the
1598	* parent directory. This is used when looking up
1599	* shared directory objects. (Pass 0 for root.)
1600	* @param pVol The instance.
1601	*
1602	* @note Caller must check for UDF_FILE_FLAGS_DELETED before calling if the
1603	* object is supposed to be used for real stuff.
1604	*/
1605	static int rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(PRTFSISOCORE pCore, PCUDFLONGAD pAllocDesc,
1606	PCUDFFILEIDDESC pFid, uintptr_t offInDir, PRTFSISOVOL pVol)
1607	{
1608	Assert(pCore->cRefs == 0);
1609	Assert(pCore->cExtents == 0);
1610	Assert(pCore->paExtents == NULL);
1611	Assert(pCore->pVol == NULL);
1612
1613	/*
1614	* Some size sanity checking.
1615	*/
1616	if (pAllocDesc->cb <= _64K)
1617	{
1618	if (pAllocDesc->cb >= sizeof(UDFICBHDR))
1619	{ /* likely */ }
1620	else
1621	{
1622	Log(("rtFsIsoCore_InitFromUdfIcbAndFileIdDesc: ICB too small: %#04x:%010RX32 LB %#x\n",
1623	pAllocDesc->Location.uPartitionNo, pAllocDesc->Location.off, pAllocDesc->cb));
1624	return VERR_ISOFS_ICB_TOO_SMALL;
1625	}
1626	}
1627	else
1628	{
1629	Log(("rtFsIsoCore_InitFromUdfIcbAndFileIdDesc: ICB too big: %#04x:%010RX32 LB %#x\n",
1630	pAllocDesc->Location.uPartitionNo, pAllocDesc->Location.off, pAllocDesc->cb));
1631	return VERR_ISOFS_ICB_TOO_BIG;
1632	}
1633
1634	/*
1635	* Allocate a temporary buffer, one logical block in size.
1636	*/
1637	uint8_t * const pbBuf = (uint8_t *)RTMemTmpAlloc(pVol->Udf.VolInfo.cbBlock);
1638	if (pbBuf)
1639	{
1640	uint32_t cProcessed = 0;
1641	uint32_t cIndirections = 0;
1642	int rc = rtFsIsoCore_InitFromUdfIcbRecursive(pCore, *pAllocDesc, pbBuf, 0, &cProcessed, &cIndirections, pVol);
1643	RTMemTmpFree(pbBuf);
1644	if (RT_SUCCESS(rc))
1645	{
1646	if (cProcessed > 0)
1647	{
1648	if (pFid)
1649	{
1650	if (pFid->fFlags & UDF_FILE_FLAGS_HIDDEN)
1651	pCore->fAttrib \|= RTFS_DOS_HIDDEN;
1652	if (pFid->fFlags & UDF_FILE_FLAGS_DELETED)
1653	pCore->fAttrib = (pCore->fAttrib & ~RTFS_TYPE_MASK) \| RTFS_TYPE_WHITEOUT;
1654	}
1655
1656	pCore->cRefs = 1;
1657	pCore->pVol = pVol;
1658	pCore->offDirRec = offInDir;
1659	return VINF_SUCCESS;
1660	}
1661	rc = VERR_ISOFS_NO_DIRECT_ICB_ENTRIES;
1662	}
1663
1664	/* White-out fix. Caller must be checking for UDF_FILE_FLAGS_DELETED */
1665	if ( pFid
1666	&& (pFid->fFlags & UDF_FILE_FLAGS_DELETED))
1667	{
1668	pCore->fAttrib = (pCore->fAttrib & ~RTFS_TYPE_MASK) \| RTFS_TYPE_WHITEOUT;
1669	return VINF_SUCCESS;
1670	}
1671	return rc;
1672	}
1673
1674	pCore->pVol = NULL;
1675	return VERR_NO_TMP_MEMORY;
1676	}
1677
1678
1679	/**
1680	* Simple UDF read function.
1681	*
1682	* This deals with extent mappings as well as virtual partition related block
1683	* mapping and such.
1684	*
1685	* @returns VBox status code.
1686	* @param pCore The core object to read data from.
1687	* @param offRead The offset to start reading at.
1688	* @param pvBuf The output buffer.
1689	* @param cbToRead The number of bytes to read.
1690	* @param pcbRead Where to return the number of bytes read.
1691	* @param poffPosMov Where to return the number of bytes to move the read
1692	* position. Optional. (Essentially same as pcbRead
1693	* except without the behavior change.)
1694	*/
1695	static int rtFsIsoCore_ReadWorker(PRTFSISOCORE pCore, uint64_t offRead, void *pvBuf, size_t cbToRead,
1696	size_t pcbRead, size_t poffPosMov)
1697	{
1698	/*
1699	* Check for EOF.
1700	*/
1701	if (offRead >= pCore->cbObject)
1702	{
1703	if (poffPosMov)
1704	*poffPosMov = 0;
1705	if (pcbRead)
1706	{
1707	*pcbRead = 0;
1708	return VINF_EOF;
1709	}
1710	return VERR_EOF;
1711	}
1712	int rcRet = VINF_SUCCESS;
1713	if ( cbToRead > pCore->cbObject
1714	\|\| offRead + cbToRead > pCore->cbObject)
1715	{
1716	if (!pcbRead)
1717	{
1718	if (poffPosMov)
1719	*poffPosMov = 0;
1720	return VERR_EOF;
1721	}
1722	cbToRead = pCore->cbObject - offRead;
1723	rcRet = VINF_EOF;
1724	}
1725
1726	uint64_t cbActual = 0;
1727
1728	/*
1729	* Don't bother looking up the extent if we're not going to
1730	* read anything from it.
1731	*/
1732	if (cbToRead > 0)
1733	{
1734	/*
1735	* Locate the first extent.
1736	*/
1737	uint64_t offExtent = 0;
1738	uint32_t iExtent = 0;
1739	PCRTFSISOEXTENT pCurExtent = &pCore->FirstExtent;
1740	if (offRead < pCurExtent->cbExtent)
1741	{ /* likely */ }
1742	else
1743	do
1744	{
1745	offExtent += pCurExtent->cbExtent;
1746	pCurExtent = &pCore->paExtents[iExtent++];
1747	if (iExtent >= pCore->cExtents)
1748	{
1749	memset(pvBuf, 0, cbToRead);
1750
1751	if (pcbRead)
1752	*pcbRead = cbToRead;
1753	if (poffPosMov)
1754	*poffPosMov = cbToRead;
1755	return rcRet;
1756	}
1757	} while (offExtent < offRead);
1758	Assert(offRead - offExtent < pCurExtent->cbExtent);
1759
1760	/*
1761	* Do the reading part.
1762	*/
1763	PRTFSISOVOL pVol = pCore->pVol;
1764	for (;;)
1765	{
1766	uint64_t offIntoExtent = offRead - offExtent;
1767	size_t cbThisRead = pCurExtent->cbExtent - offIntoExtent;
1768	if (cbThisRead > cbToRead)
1769	cbThisRead = cbToRead;
1770
1771	if (pCurExtent->off == UINT64_MAX)
1772	RT_BZERO(pvBuf, cbThisRead);
1773	else
1774	{
1775	int rc2;
1776	if (pCurExtent->idxPart == UINT32_MAX)
1777	rc2 = RTVfsFileReadAt(pVol->hVfsBacking, pCurExtent->off + offIntoExtent, pvBuf, cbThisRead, NULL);
1778	else
1779	{
1780	Assert(pVol->enmType == RTFSISOVOLTYPE_UDF);
1781	if (pCurExtent->idxPart < pVol->Udf.VolInfo.cPartitions)
1782	{
1783	PRTFSISOVOLUDFPMAP pPart = &pVol->Udf.VolInfo.paPartitions[pCurExtent->idxPart];
1784	switch (pPart->bType)
1785	{
1786	case RTFSISO_UDF_PMAP_T_PLAIN:
1787	rc2 = RTVfsFileReadAt(pVol->hVfsBacking, pPart->offByteLocation + pCurExtent->off + offIntoExtent,
1788	pvBuf, cbThisRead, NULL);
1789	break;
1790
1791	default:
1792	AssertFailed();
1793	rc2 = VERR_ISOFS_IPE_1;
1794	break;
1795	}
1796	}
1797	else
1798	{
1799	Log(("ISO/UDF: Invalid partition index %#x (offset %#RX64), max partitions %#x; iExtent=%#x\n",
1800	pCurExtent->idxPart, pCurExtent->off + offIntoExtent, pVol->Udf.VolInfo.cPartitions, iExtent));
1801	rc2 = VERR_ISOFS_INVALID_PARTITION_INDEX;
1802	}
1803	}
1804	if (RT_FAILURE(rc2))
1805	{
1806	rcRet = rc2;
1807	break;
1808	}
1809	}
1810
1811	/*
1812	* Advance the buffer position and check if we're done (probable).
1813	*/
1814	cbActual += cbThisRead;
1815	cbToRead -= cbThisRead;
1816	if (!cbToRead)
1817	break;
1818	pvBuf = (uint8_t *)pvBuf + cbThisRead;
1819
1820	/*
1821	* Advance to the next extent.
1822	*/
1823	offExtent += pCurExtent->cbExtent;
1824	pCurExtent = &pCore->paExtents[iExtent++];
1825	if (iExtent >= pCore->cExtents)
1826	{
1827	memset(pvBuf, 0, cbToRead);
1828	cbActual += cbToRead;
1829	break;
1830	}
1831	}
1832	}
1833	else
1834	Assert(rcRet == VINF_SUCCESS);
1835
1836	if (poffPosMov)
1837	*poffPosMov = cbActual;
1838	if (pcbRead)
1839	*pcbRead = cbActual;
1840	return rcRet;
1841	}
1842
1843
1844	/**
1845	* Worker for rtFsIsoFile_QueryInfo and rtFsIsoDir_QueryInfo.
1846	*/
1847	static int rtFsIsoCore_QueryInfo(PRTFSISOCORE pCore, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
1848	{
1849	pObjInfo->cbObject = pCore->cbObject;
1850	pObjInfo->cbAllocated = RT_ALIGN_64(pCore->cbObject, pCore->pVol->cbBlock);
1851	pObjInfo->AccessTime = pCore->AccessTime;
1852	pObjInfo->ModificationTime = pCore->ModificationTime;
1853	pObjInfo->ChangeTime = pCore->ChangeTime;
1854	pObjInfo->BirthTime = pCore->BirthTime;
1855	pObjInfo->Attr.fMode = pCore->fAttrib;
1856	pObjInfo->Attr.enmAdditional = enmAddAttr;
1857
1858	switch (enmAddAttr)
1859	{
1860	case RTFSOBJATTRADD_NOTHING: RT_FALL_THRU();
1861	case RTFSOBJATTRADD_UNIX:
1862	pObjInfo->Attr.u.Unix.uid = NIL_RTUID;
1863	pObjInfo->Attr.u.Unix.gid = NIL_RTGID;
1864	pObjInfo->Attr.u.Unix.cHardlinks = 1;
1865	pObjInfo->Attr.u.Unix.INodeIdDevice = 0;
1866	pObjInfo->Attr.u.Unix.INodeId = pCore->idINode;
1867	pObjInfo->Attr.u.Unix.fFlags = 0;
1868	pObjInfo->Attr.u.Unix.GenerationId = pCore->uVersion;
1869	pObjInfo->Attr.u.Unix.Device = 0;
1870	break;
1871	case RTFSOBJATTRADD_UNIX_OWNER:
1872	pObjInfo->Attr.u.UnixOwner.uid = 0;
1873	pObjInfo->Attr.u.UnixOwner.szName[0] = '\0';
1874	break;
1875	case RTFSOBJATTRADD_UNIX_GROUP:
1876	pObjInfo->Attr.u.UnixGroup.gid = 0;
1877	pObjInfo->Attr.u.UnixGroup.szName[0] = '\0';
1878	break;
1879	case RTFSOBJATTRADD_EASIZE:
1880	pObjInfo->Attr.u.EASize.cb = 0;
1881	break;
1882	default:
1883	return VERR_INVALID_PARAMETER;
1884	}
1885	return VINF_SUCCESS;
1886	}
1887
1888
1889	/**
1890	* Worker for rtFsIsoFile_Close and rtFsIsoDir_Close that does common work.
1891	*
1892	* @param pCore The common shared structure.
1893	*/
1894	static void rtFsIsoCore_Destroy(PRTFSISOCORE pCore)
1895	{
1896	if (pCore->pParentDir)
1897	rtFsIsoDirShrd_RemoveOpenChild(pCore->pParentDir, pCore);
1898	if (pCore->paExtents)
1899	{
1900	RTMemFree(pCore->paExtents);
1901	pCore->paExtents = NULL;
1902	}
1903	}
1904
1905
1906	/**
1907	* @interface_method_impl{RTVFSOBJOPS,pfnClose}
1908	*/
1909	static DECLCALLBACK(int) rtFsIsoFile_Close(void *pvThis)
1910	{
1911	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
1912	LogFlow(("rtFsIsoFile_Close(%p/%p)\n", pThis, pThis->pShared));
1913
1914	PRTFSISOFILESHRD pShared = pThis->pShared;
1915	pThis->pShared = NULL;
1916	if (pShared)
1917	{
1918	if (ASMAtomicDecU32(&pShared->Core.cRefs) == 0)
1919	{
1920	LogFlow(("rtFsIsoFile_Close: Destroying shared structure %p\n", pShared));
1921	rtFsIsoCore_Destroy(&pShared->Core);
1922	RTMemFree(pShared);
1923	}
1924	}
1925	return VINF_SUCCESS;
1926	}
1927
1928
1929	/**
1930	* @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
1931	*/
1932	static DECLCALLBACK(int) rtFsIsoFile_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
1933	{
1934	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
1935	return rtFsIsoCore_QueryInfo(&pThis->pShared->Core, pObjInfo, enmAddAttr);
1936	}
1937
1938
1939	/**
1940	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnRead}
1941	*/
1942	static DECLCALLBACK(int) rtFsIsoFile_Read(void pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t pcbRead)
1943	{
1944	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
1945	PRTFSISOFILESHRD pShared = pThis->pShared;
1946	AssertReturn(pSgBuf->cSegs == 1, VERR_INTERNAL_ERROR_3);
1947	RT_NOREF(fBlocking);
1948
1949	#if 1
1950	/* Apply default offset. */
1951	if (off == -1)
1952	off = pThis->offFile;
1953	else
1954	AssertReturn(off >= 0, VERR_INTERNAL_ERROR_3);
1955
1956	/* Do the read. */
1957	size_t offDelta = 0;
1958	int rc = rtFsIsoCore_ReadWorker(&pShared->Core, off, (uint8_t *)pSgBuf->paSegs[0].pvSeg,
1959	pSgBuf->paSegs[0].cbSeg, pcbRead, &offDelta);
1960
1961	/* Update the file position and return. */
1962	pThis->offFile = off + offDelta;
1963	return rc;
1964	#else
1965
1966
1967	/*
1968	* Check for EOF.
1969	*/
1970	if (off == -1)
1971	off = pThis->offFile;
1972	if ((uint64_t)off >= pShared->Core.cbObject)
1973	{
1974	if (pcbRead)
1975	{
1976	*pcbRead = 0;
1977	return VINF_EOF;
1978	}
1979	return VERR_EOF;
1980	}
1981
1982	if (pShared->Core.pVol->enmType == RTFSISOVOLTYPE_UDF)
1983	{
1984	return VERR_ISOFS_UDF_NOT_IMPLEMENTED;
1985	}
1986
1987	/*
1988	* Simple case: File has a single extent.
1989	*/
1990	int rc = VINF_SUCCESS;
1991	size_t cbRead = 0;
1992	uint64_t cbFileLeft = pShared->Core.cbObject - (uint64_t)off;
1993	size_t cbLeft = pSgBuf->paSegs[0].cbSeg;
1994	uint8_t pbDst = (uint8_t )pSgBuf->paSegs[0].pvSeg;
1995	if (pShared->Core.cExtents == 1)
1996	{
1997	if (cbLeft > 0)
1998	{
1999	size_t cbToRead = cbLeft;
2000	if (cbToRead > cbFileLeft)
2001	cbToRead = (size_t)cbFileLeft;
2002	rc = RTVfsFileReadAt(pShared->Core.pVol->hVfsBacking, pShared->Core.FirstExtent.off + off, pbDst, cbToRead, NULL);
2003	if (RT_SUCCESS(rc))
2004	{
2005	off += cbToRead;
2006	pbDst += cbToRead;
2007	cbRead += cbToRead;
2008	cbFileLeft -= cbToRead;
2009	cbLeft -= cbToRead;
2010	}
2011	}
2012	}
2013	/*
2014	* Complicated case: Work the file content extent by extent.
2015	*/
2016	else
2017	{
2018	return VERR_NOT_IMPLEMENTED; /** @todo multi-extent stuff . */
2019	}
2020
2021	/* Update the offset and return. */
2022	pThis->offFile = off;
2023	if (pcbRead)
2024	*pcbRead = cbRead;
2025	return VINF_SUCCESS;
2026	#endif
2027	}
2028
2029
2030	/**
2031	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnFlush}
2032	*/
2033	static DECLCALLBACK(int) rtFsIsoFile_Flush(void *pvThis)
2034	{
2035	RT_NOREF(pvThis);
2036	return VINF_SUCCESS;
2037	}
2038
2039
2040	/**
2041	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnPollOne}
2042	*/
2043	static DECLCALLBACK(int) rtFsIsoFile_PollOne(void *pvThis, uint32_t fEvents, RTMSINTERVAL cMillies, bool fIntr,
2044	uint32_t *pfRetEvents)
2045	{
2046	NOREF(pvThis);
2047	int rc;
2048	if (fEvents != RTPOLL_EVT_ERROR)
2049	{
2050	*pfRetEvents = fEvents & ~RTPOLL_EVT_ERROR;
2051	rc = VINF_SUCCESS;
2052	}
2053	else if (fIntr)
2054	rc = RTThreadSleep(cMillies);
2055	else
2056	{
2057	uint64_t uMsStart = RTTimeMilliTS();
2058	do
2059	rc = RTThreadSleep(cMillies);
2060	while ( rc == VERR_INTERRUPTED
2061	&& !fIntr
2062	&& RTTimeMilliTS() - uMsStart < cMillies);
2063	if (rc == VERR_INTERRUPTED)
2064	rc = VERR_TIMEOUT;
2065	}
2066	return rc;
2067	}
2068
2069
2070	/**
2071	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnTell}
2072	*/
2073	static DECLCALLBACK(int) rtFsIsoFile_Tell(void *pvThis, PRTFOFF poffActual)
2074	{
2075	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
2076	*poffActual = pThis->offFile;
2077	return VINF_SUCCESS;
2078	}
2079
2080
2081	/**
2082	* @interface_method_impl{RTVFSFILEOPS,pfnSeek}
2083	*/
2084	static DECLCALLBACK(int) rtFsIsoFile_Seek(void *pvThis, RTFOFF offSeek, unsigned uMethod, PRTFOFF poffActual)
2085	{
2086	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
2087	RTFOFF offNew;
2088	switch (uMethod)
2089	{
2090	case RTFILE_SEEK_BEGIN:
2091	offNew = offSeek;
2092	break;
2093	case RTFILE_SEEK_END:
2094	offNew = (RTFOFF)pThis->pShared->Core.cbObject + offSeek;
2095	break;
2096	case RTFILE_SEEK_CURRENT:
2097	offNew = (RTFOFF)pThis->offFile + offSeek;
2098	break;
2099	default:
2100	return VERR_INVALID_PARAMETER;
2101	}
2102	if (offNew >= 0)
2103	{
2104	if (offNew <= _4G)
2105	{
2106	pThis->offFile = offNew;
2107	*poffActual = offNew;
2108	return VINF_SUCCESS;
2109	}
2110	return VERR_OUT_OF_RANGE;
2111	}
2112	return VERR_NEGATIVE_SEEK;
2113	}
2114
2115
2116	/**
2117	* @interface_method_impl{RTVFSFILEOPS,pfnQuerySize}
2118	*/
2119	static DECLCALLBACK(int) rtFsIsoFile_QuerySize(void pvThis, uint64_t pcbFile)
2120	{
2121	PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis;
2122	*pcbFile = pThis->pShared->Core.cbObject;
2123	return VINF_SUCCESS;
2124	}
2125
2126
2127	/**
2128	* ISO FS file operations.
2129	*/
2130	DECL_HIDDEN_CONST(const RTVFSFILEOPS) g_rtFsIsoFileOps =
2131	{
2132	{ /* Stream */
2133	{ /* Obj */
2134	RTVFSOBJOPS_VERSION,
2135	RTVFSOBJTYPE_FILE,
2136	"FatFile",
2137	rtFsIsoFile_Close,
2138	rtFsIsoFile_QueryInfo,
2139	RTVFSOBJOPS_VERSION
2140	},
2141	RTVFSIOSTREAMOPS_VERSION,
2142	RTVFSIOSTREAMOPS_FEAT_NO_SG,
2143	rtFsIsoFile_Read,
2144	NULL /Write/,
2145	rtFsIsoFile_Flush,
2146	rtFsIsoFile_PollOne,
2147	rtFsIsoFile_Tell,
2148	NULL /pfnSkip/,
2149	NULL /pfnZeroFill/,
2150	RTVFSIOSTREAMOPS_VERSION,
2151	},
2152	RTVFSFILEOPS_VERSION,
2153	0,
2154	{ /* ObjSet */
2155	RTVFSOBJSETOPS_VERSION,
2156	RT_UOFFSETOF(RTVFSFILEOPS, ObjSet) - RT_UOFFSETOF(RTVFSFILEOPS, Stream.Obj),
2157	NULL /SetMode/,
2158	NULL /SetTimes/,
2159	NULL /SetOwner/,
2160	RTVFSOBJSETOPS_VERSION
2161	},
2162	rtFsIsoFile_Seek,
2163	rtFsIsoFile_QuerySize,
2164	NULL /SetSize/,
2165	NULL /QueryMaxSize/,
2166	RTVFSFILEOPS_VERSION
2167	};
2168
2169
2170	/**
2171	* Instantiates a new file, from ISO 9660 info.
2172	*
2173	* @returns IPRT status code.
2174	* @param pThis The ISO volume instance.
2175	* @param pParentDir The parent directory (shared part).
2176	* @param pDirRec The directory record.
2177	* @param cDirRecs Number of directory records if more than one.
2178	* @param offDirRec The byte offset of the directory record.
2179	* @param offEntryInDir The byte offset of the directory entry in the parent
2180	* directory.
2181	* @param fOpen RTFILE_O_XXX flags.
2182	* @param uVersion The file version number (since the caller already
2183	* parsed the filename, we don't want to repeat the
2184	* effort here).
2185	* @param phVfsFile Where to return the file handle.
2186	*/
2187	static int rtFsIsoFile_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs,
2188	uint64_t offDirRec, uint64_t fOpen, uint32_t uVersion, PRTVFSFILE phVfsFile)
2189	{
2190	AssertPtr(pParentDir);
2191
2192	/*
2193	* Create a VFS object.
2194	*/
2195	PRTFSISOFILEOBJ pNewFile;
2196	int rc = RTVfsNewFile(&g_rtFsIsoFileOps, sizeof(pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /use volume lock*/,
2197	phVfsFile, (void **)&pNewFile);
2198	if (RT_SUCCESS(rc))
2199	{
2200	/*
2201	* Look for existing shared object, create a new one if necessary.
2202	*/
2203	PRTFSISOFILESHRD pShared = (PRTFSISOFILESHRD)rtFsIsoDir_LookupShared(pParentDir, offDirRec);
2204	if (pShared)
2205	{
2206	LogFlow(("rtFsIsoFile_New9660: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2207	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2208	pNewFile->offFile = 0;
2209	pNewFile->pShared = pShared;
2210	return VINF_SUCCESS;
2211	}
2212
2213	pShared = (PRTFSISOFILESHRD)RTMemAllocZ(sizeof(*pShared));
2214	if (pShared)
2215	{
2216	rc = rtFsIsoCore_InitFrom9660DirRec(&pShared->Core, pDirRec, cDirRecs, offDirRec, uVersion, pThis);
2217	if (RT_SUCCESS(rc))
2218	{
2219	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
2220	LogFlow(("rtFsIsoFile_New9660: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2221	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2222	pNewFile->offFile = 0;
2223	pNewFile->pShared = pShared;
2224	return VINF_SUCCESS;
2225	}
2226	RTMemFree(pShared);
2227	}
2228	else
2229	rc = VERR_NO_MEMORY;
2230
2231	/* Destroy the file object. */
2232	pNewFile->offFile = 0;
2233	pNewFile->pShared = NULL;
2234	RTVfsFileRelease(*phVfsFile);
2235	}
2236	*phVfsFile = NIL_RTVFSFILE;
2237	return rc;
2238	}
2239
2240
2241	/**
2242	* Instantiates a new file, from UDF info.
2243	*
2244	* @returns IPRT status code.
2245	* @param pThis The ISO volume instance.
2246	* @param pParentDir The parent directory (shared part).
2247	* @param pFid The file ID descriptor. (Points to parent directory
2248	* content.)
2249	* @param fOpen RTFILE_O_XXX flags.
2250	* @param phVfsFile Where to return the file handle.
2251	*/
2252	static int rtFsIsoFile_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid,
2253	uint64_t fOpen, PRTVFSFILE phVfsFile)
2254	{
2255	AssertPtr(pParentDir);
2256	uintptr_t const offInDir = (uintptr_t)pFid - (uintptr_t)pParentDir->pbDir;
2257	Assert(offInDir < pParentDir->cbDir);
2258	Assert(!(pFid->fFlags & UDF_FILE_FLAGS_DELETED));
2259	Assert(!(pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY));
2260
2261	/*
2262	* Create a VFS object.
2263	*/
2264	PRTFSISOFILEOBJ pNewFile;
2265	int rc = RTVfsNewFile(&g_rtFsIsoFileOps, sizeof(pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /use volume lock*/,
2266	phVfsFile, (void **)&pNewFile);
2267	if (RT_SUCCESS(rc))
2268	{
2269	/*
2270	* Look for existing shared object. Make sure it's a file.
2271	*/
2272	PRTFSISOFILESHRD pShared = (PRTFSISOFILESHRD)rtFsIsoDir_LookupShared(pParentDir, offInDir);
2273	if (pShared)
2274	{
2275	if (!RTFS_IS_FILE(pShared->Core.fAttrib))
2276	{
2277	LogFlow(("rtFsIsoFile_NewUdf: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2278	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2279	pNewFile->offFile = 0;
2280	pNewFile->pShared = pShared;
2281	return VINF_SUCCESS;
2282	}
2283	}
2284	/*
2285	* Create a shared object for this alleged file.
2286	*/
2287	else
2288	{
2289	pShared = (PRTFSISOFILESHRD)RTMemAllocZ(sizeof(*pShared));
2290	if (pShared)
2291	{
2292	rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&pShared->Core, &pFid->Icb, pFid, offInDir, pThis);
2293	if (RT_SUCCESS(rc))
2294	{
2295	if (RTFS_IS_FILE(pShared->Core.fAttrib))
2296	{
2297	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
2298
2299	LogFlow(("rtFsIsoFile_NewUdf: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n",
2300	pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent));
2301	pNewFile->offFile = 0;
2302	pNewFile->pShared = pShared;
2303	return VINF_SUCCESS;
2304	}
2305	rtFsIsoCore_Destroy(&pShared->Core);
2306	}
2307	RTMemFree(pShared);
2308	}
2309	else
2310	rc = VERR_NO_MEMORY;
2311	}
2312
2313	/* Destroy the file object. */
2314	pNewFile->offFile = 0;
2315	pNewFile->pShared = NULL;
2316	RTVfsFileRelease(*phVfsFile);
2317	}
2318	*phVfsFile = NIL_RTVFSFILE;
2319	return rc;
2320	}
2321
2322
2323	/**
2324	* Looks up the shared structure for a child.
2325	*
2326	* @returns Referenced pointer to the shared structure, NULL if not found.
2327	* @param pThis The directory.
2328	* @param offDirRec The directory record offset of the child.
2329	*/
2330	static PRTFSISOCORE rtFsIsoDir_LookupShared(PRTFSISODIRSHRD pThis, uint64_t offDirRec)
2331	{
2332	PRTFSISOCORE pCur;
2333	RTListForEach(&pThis->OpenChildren, pCur, RTFSISOCORE, Entry)
2334	{
2335	if (pCur->offDirRec == offDirRec)
2336	{
2337	uint32_t cRefs = ASMAtomicIncU32(&pCur->cRefs);
2338	Assert(cRefs > 1); RT_NOREF(cRefs);
2339	return pCur;
2340	}
2341	}
2342	return NULL;
2343	}
2344
2345
2346	#ifdef RT_STRICT
2347	/**
2348	* Checks if @a pNext is an extent of @a pFirst.
2349	*
2350	* @returns true if @a pNext is the next extent, false if not
2351	* @param pFirst The directory record describing the first or the
2352	* previous extent.
2353	* @param pNext The directory record alleged to be the next extent.
2354	*/
2355	DECLINLINE(bool) rtFsIsoDir_Is9660DirRecNextExtent(PCISO9660DIRREC pFirst, PCISO9660DIRREC pNext)
2356	{
2357	if (RT_LIKELY(pNext->bFileIdLength == pFirst->bFileIdLength))
2358	{
2359	if (RT_LIKELY((pNext->fFileFlags \| ISO9660_FILE_FLAGS_MULTI_EXTENT) == pFirst->fFileFlags))
2360	{
2361	if (RT_LIKELY(memcmp(pNext->achFileId, pFirst->achFileId, pNext->bFileIdLength) == 0))
2362	return true;
2363	}
2364	}
2365	return false;
2366	}
2367	#endif /* RT_STRICT */
2368
2369
2370	/**
2371	* Worker for rtFsIsoDir_FindEntry9660 that compares a UTF-16BE name with a
2372	* directory record.
2373	*
2374	* @returns true if equal, false if not.
2375	* @param pDirRec The directory record.
2376	* @param pwszEntry The UTF-16BE string to compare with.
2377	* @param cbEntry The compare string length in bytes (sans zero
2378	* terminator).
2379	* @param cwcEntry The compare string length in RTUTF16 units.
2380	* @param puVersion Where to return any file version number.
2381	*/
2382	DECL_FORCE_INLINE(bool) rtFsIsoDir_IsEntryEqualUtf16Big(PCISO9660DIRREC pDirRec, PCRTUTF16 pwszEntry, size_t cbEntry,
2383	size_t cwcEntry, uint32_t *puVersion)
2384	{
2385	/* ASSUME directories cannot have any version tags. */
2386	if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
2387	{
2388	if (RT_LIKELY(pDirRec->bFileIdLength != cbEntry))
2389	return false;
2390	if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0))
2391	return false;
2392	}
2393	else
2394	{
2395	size_t cbNameDelta = (size_t)pDirRec->bFileIdLength - cbEntry;
2396	if (RT_LIKELY(cbNameDelta > (size_t)12 /* ;12345 */))
2397	return false;
2398	if (cbNameDelta == 0)
2399	{
2400	if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0))
2401	return false;
2402	*puVersion = 1;
2403	}
2404	else
2405	{
2406	if (RT_LIKELY(RT_MAKE_U16(pDirRec->achFileId[cbEntry + 1], pDirRec->achFileId[cbEntry]) != ';'))
2407	return false;
2408	if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0))
2409	return false;
2410	uint32_t uVersion;
2411	size_t cwcVersion = rtFsIso9660GetVersionLengthUtf16Big((PCRTUTF16)pDirRec->achFileId,
2412	pDirRec->bFileIdLength, &uVersion);
2413	if (RT_LIKELY(cwcVersion * sizeof(RTUTF16) == cbNameDelta))
2414	*puVersion = uVersion;
2415	else
2416	return false;
2417	}
2418	}
2419
2420	/* (No need to check for dot and dot-dot here, because cbEntry must be a
2421	multiple of two.) */
2422	Assert(!(cbEntry & 1));
2423	return true;
2424	}
2425
2426
2427	/**
2428	* Worker for rtFsIsoDir_FindEntry9660 that compares an ASCII name with a
2429	* directory record.
2430	*
2431	* @returns true if equal, false if not.
2432	* @param pDirRec The directory record.
2433	* @param pszEntry The uppercased ASCII string to compare with.
2434	* @param cchEntry The length of the compare string.
2435	* @param puVersion Where to return any file version number.
2436	*/
2437	DECL_FORCE_INLINE(bool) rtFsIsoDir_IsEntryEqualAscii(PCISO9660DIRREC pDirRec, const char *pszEntry, size_t cchEntry,
2438	uint32_t *puVersion)
2439	{
2440	/* ASSUME directories cannot have any version tags. */
2441	if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
2442	{
2443	if (RT_LIKELY(pDirRec->bFileIdLength != cchEntry))
2444	return false;
2445	if (RT_LIKELY(memcmp(pDirRec->achFileId, pszEntry, cchEntry) != 0))
2446	return false;
2447	}
2448	else
2449	{
2450	size_t cchNameDelta = (size_t)pDirRec->bFileIdLength - cchEntry;
2451	if (RT_LIKELY(cchNameDelta > (size_t)6 /* ;12345 */))
2452	return false;
2453	if (cchNameDelta == 0)
2454	{
2455	if (RT_LIKELY(memcmp(pDirRec->achFileId, pszEntry, cchEntry) != 0))
2456	return false;
2457	*puVersion = 1;
2458	}
2459	else
2460	{
2461	if (RT_LIKELY(pDirRec->achFileId[cchEntry] != ';'))
2462	return false;
2463	if (RT_LIKELY(memcmp(pDirRec->achFileId, pszEntry, cchEntry) != 0))
2464	return false;
2465	uint32_t uVersion;
2466	size_t cchVersion = rtFsIso9660GetVersionLengthAscii(pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion);
2467	if (RT_LIKELY(cchVersion == cchNameDelta))
2468	*puVersion = uVersion;
2469	else
2470	return false;
2471	}
2472	}
2473
2474	/* Don't match the 'dot' and 'dot-dot' directory records. */
2475	if (RT_LIKELY( pDirRec->bFileIdLength != 1
2476	\|\| (uint8_t)pDirRec->achFileId[0] > (uint8_t)0x01))
2477	return true;
2478	return false;
2479	}
2480
2481
2482	/**
2483	* Locates a directory entry in a directory.
2484	*
2485	* @returns IPRT status code.
2486	* @retval VERR_FILE_NOT_FOUND if not found.
2487	* @param pThis The directory to search.
2488	* @param pszEntry The entry to look for.
2489	* @param poffDirRec Where to return the offset of the directory record
2490	* on the disk.
2491	* @param ppDirRec Where to return the pointer to the directory record
2492	* (the whole directory is buffered).
2493	* @param pcDirRecs Where to return the number of directory records
2494	* related to this entry.
2495	* @param pfMode Where to return the file type, rock ridge adjusted.
2496	* @param puVersion Where to return the file version number.
2497	*/
2498	static int rtFsIsoDir_FindEntry9660(PRTFSISODIRSHRD pThis, const char pszEntry, uint64_t poffDirRec,
2499	PCISO9660DIRREC ppDirRec, uint32_t pcDirRecs, PRTFMODE pfMode, uint32_t *puVersion)
2500	{
2501	Assert(pThis->Core.pVol->enmType != RTFSISOVOLTYPE_UDF);
2502
2503	/* Set return values. */
2504	*poffDirRec = UINT64_MAX;
2505	*ppDirRec = NULL;
2506	*pcDirRecs = 1;
2507	*pfMode = UINT32_MAX;
2508	*puVersion = 0;
2509
2510	/*
2511	* If we're in UTF-16BE mode, convert the input name to UTF-16BE. Otherwise try
2512	* uppercase it into a ISO 9660 compliant name.
2513	*/
2514	int rc;
2515	bool const fIsUtf16 = pThis->Core.pVol->fIsUtf16;
2516	size_t cwcEntry = 0;
2517	size_t cbEntry = 0;
2518	size_t cchUpper = ~(size_t)0;
2519	union
2520	{
2521	RTUTF16 wszEntry[260 + 1];
2522	struct
2523	{
2524	char szUpper[255 + 1];
2525	char szRock[260 + 1];
2526	} s;
2527	} uBuf;
2528	if (fIsUtf16)
2529	{
2530	PRTUTF16 pwszEntry = uBuf.wszEntry;
2531	rc = RTStrToUtf16BigEx(pszEntry, RTSTR_MAX, &pwszEntry, RT_ELEMENTS(uBuf.wszEntry), &cwcEntry);
2532	if (RT_FAILURE(rc))
2533	return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc;
2534	cbEntry = cwcEntry * 2;
2535	}
2536	else
2537	{
2538	rc = RTStrCopy(uBuf.s.szUpper, sizeof(uBuf.s.szUpper), pszEntry);
2539	if (RT_FAILURE(rc))
2540	return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc;
2541	RTStrToUpper(uBuf.s.szUpper);
2542	cchUpper = strlen(uBuf.s.szUpper);
2543	}
2544
2545	/*
2546	* Scan the directory buffer by buffer.
2547	*/
2548	uint32_t offEntryInDir = 0;
2549	uint32_t const cbDir = pThis->Core.cbObject;
2550	while (offEntryInDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= cbDir)
2551	{
2552	PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir];
2553
2554	/* If null length, skip to the next sector. */
2555	if (pDirRec->cbDirRec == 0)
2556	offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U);
2557	else
2558	{
2559	/* Try match the filename. */
2560	if (fIsUtf16)
2561	{
2562	if (RT_LIKELY(!rtFsIsoDir_IsEntryEqualUtf16Big(pDirRec, uBuf.wszEntry, cbEntry, cwcEntry, puVersion)))
2563	{
2564	/* Advance */
2565	offEntryInDir += pDirRec->cbDirRec;
2566	continue;
2567	}
2568	}
2569	else
2570	{
2571	if (RT_LIKELY(!rtFsIsoDir_IsEntryEqualAscii(pDirRec, uBuf.s.szUpper, cchUpper, puVersion)))
2572	{
2573	/** @todo check rock. */
2574	if (1)
2575	{
2576	/* Advance */
2577	offEntryInDir += pDirRec->cbDirRec;
2578	continue;
2579	}
2580	}
2581	}
2582
2583	*poffDirRec = pThis->Core.FirstExtent.off + offEntryInDir;
2584	*ppDirRec = pDirRec;
2585	*pfMode = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY
2586	? 0755 \| RTFS_TYPE_DIRECTORY \| RTFS_DOS_DIRECTORY
2587	: 0644 \| RTFS_TYPE_FILE;
2588
2589	/*
2590	* Deal with the unlikely scenario of multi extent records.
2591	*/
2592	if (!(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
2593	*pcDirRecs = 1;
2594	else
2595	{
2596	offEntryInDir += pDirRec->cbDirRec;
2597
2598	uint32_t cDirRecs = 1;
2599	while (offEntryInDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= cbDir)
2600	{
2601	PCISO9660DIRREC pDirRec2 = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir];
2602	if (pDirRec2->cbDirRec != 0)
2603	{
2604	Assert(rtFsIsoDir_Is9660DirRecNextExtent(pDirRec, pDirRec2));
2605	cDirRecs++;
2606	if (!(pDirRec2->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
2607	break;
2608	offEntryInDir += pDirRec2->cbDirRec;
2609	}
2610	else
2611	offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U);
2612	}
2613
2614	*pcDirRecs = cDirRecs;
2615	}
2616	return VINF_SUCCESS;
2617	}
2618	}
2619
2620	return VERR_FILE_NOT_FOUND;
2621	}
2622
2623
2624	/**
2625	* Locates a directory entry in a directory.
2626	*
2627	* @returns IPRT status code.
2628	* @retval VERR_FILE_NOT_FOUND if not found.
2629	* @param pThis The directory to search.
2630	* @param pszEntry The entry to look for.
2631	* @param ppFid Where to return the pointer to the file ID entry.
2632	* (Points to the directory content.)
2633	*/
2634	static int rtFsIsoDir_FindEntryUdf(PRTFSISODIRSHRD pThis, const char pszEntry, PCUDFFILEIDDESC ppFid)
2635	{
2636	Assert(pThis->Core.pVol->enmType == RTFSISOVOLTYPE_UDF);
2637	*ppFid = NULL;
2638
2639	/*
2640	* Recode the entry name as 8-bit (if possible) and 16-bit strings.
2641	* This also disposes of entries that definitely are too long.
2642	*/
2643	size_t cb8Bit;
2644	bool fSimple;
2645	size_t cb16Bit;
2646	size_t cwc16Bit;
2647	uint8_t ab8Bit[255];
2648	RTUTF16 wsz16Bit[255];
2649
2650	/* 16-bit */
2651	PRTUTF16 pwsz16Bit = wsz16Bit;
2652	int rc = RTStrToUtf16BigEx(pszEntry, RTSTR_MAX, &pwsz16Bit, RT_ELEMENTS(wsz16Bit), &cwc16Bit);
2653	if (RT_SUCCESS(rc))
2654	cb16Bit = 1 + cwc16Bit * sizeof(RTUTF16);
2655	else
2656	return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc;
2657
2658	/* 8-bit (can't possibly overflow) */
2659	fSimple = true;
2660	cb8Bit = 0;
2661	const char *pszSrc = pszEntry;
2662	for (;;)
2663	{
2664	RTUNICP uc;
2665	int rc2 = RTStrGetCpEx(&pszSrc, &uc);
2666	AssertRCReturn(rc2, rc2);
2667	if (uc <= 0x7f)
2668	{
2669	if (uc)
2670	ab8Bit[cb8Bit++] = (uint8_t)uc;
2671	else
2672	break;
2673	}
2674	else if (uc <= 0xff)
2675	{
2676	ab8Bit[cb8Bit++] = (uint8_t)uc;
2677	fSimple = false;
2678	}
2679	else
2680	{
2681	cb8Bit = UINT32_MAX / 2;
2682	break;
2683	}
2684	}
2685	Assert(cb8Bit <= sizeof(ab8Bit) \|\| cb8Bit == UINT32_MAX / 2);
2686	cb8Bit++;
2687
2688	/*
2689	* Scan the directory content.
2690	*/
2691	uint32_t offDesc = 0;
2692	uint32_t const cbDir = pThis->Core.cbObject;
2693	while (offDesc + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) <= cbDir)
2694	{
2695	PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pThis->pbDir[offDesc];
2696	uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid);
2697	if ( offDesc + cbFid <= cbDir
2698	&& pFid->Tag.idTag == UDF_TAG_ID_FILE_ID_DESC)
2699	{ /* likely */ }
2700	else
2701	break;
2702
2703	uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid);
2704	if (*pbName == 16)
2705	{
2706	if (cb16Bit == pFid->cbName)
2707	{
2708	if (RTUtf16BigNICmp((PCRTUTF16)(&pbName[1]), wsz16Bit, cwc16Bit) == 0)
2709	{
2710	*ppFid = pFid;
2711	return VINF_SUCCESS;
2712	}
2713	}
2714	}
2715	else if (*pbName == 8)
2716	{
2717	if ( cb8Bit == pFid->cbName
2718	&& cb8Bit != UINT16_MAX)
2719	{
2720	if (fSimple)
2721	{
2722	if (RTStrNICmp((const char )&pbName[1], (const char )ab8Bit, cb8Bit - 1) == 0)
2723	{
2724	*ppFid = pFid;
2725	return VINF_SUCCESS;
2726	}
2727	}
2728	else
2729	{
2730	size_t cch = cb8Bit - 1;
2731	size_t off;
2732	for (off = 0; off < cch; off++)
2733	{
2734	RTUNICP uc1 = ab8Bit[off];
2735	RTUNICP uc2 = pbName[off + 1];
2736	if ( uc1 == uc2
2737	\|\| RTUniCpToLower(uc1) == RTUniCpToLower(uc2)
2738	\|\| RTUniCpToUpper(uc1) == RTUniCpToUpper(uc2))
2739	{ /* matches */ }
2740	else
2741	break;
2742	}
2743	if (off == cch)
2744	{
2745	*ppFid = pFid;
2746	return VINF_SUCCESS;
2747	}
2748	}
2749	}
2750	}
2751
2752	/* advance */
2753	offDesc += cbFid;
2754	}
2755
2756	return VERR_FILE_NOT_FOUND;
2757	}
2758
2759
2760	/**
2761	* Releases a reference to a shared directory structure.
2762	*
2763	* @param pShared The shared directory structure.
2764	*/
2765	static void rtFsIsoDirShrd_Release(PRTFSISODIRSHRD pShared)
2766	{
2767	uint32_t cRefs = ASMAtomicDecU32(&pShared->Core.cRefs);
2768	Assert(cRefs < UINT32_MAX / 2);
2769	if (cRefs == 0)
2770	{
2771	LogFlow(("rtFsIsoDirShrd_Release: Destroying shared structure %p\n", pShared));
2772	Assert(pShared->Core.cRefs == 0);
2773	if (pShared->pbDir)
2774	{
2775	RTMemFree(pShared->pbDir);
2776	pShared->pbDir = NULL;
2777	}
2778	rtFsIsoCore_Destroy(&pShared->Core);
2779	RTMemFree(pShared);
2780	}
2781	}
2782
2783
2784	/**
2785	* Retains a reference to a shared directory structure.
2786	*
2787	* @param pShared The shared directory structure.
2788	*/
2789	static void rtFsIsoDirShrd_Retain(PRTFSISODIRSHRD pShared)
2790	{
2791	uint32_t cRefs = ASMAtomicIncU32(&pShared->Core.cRefs);
2792	Assert(cRefs > 1); NOREF(cRefs);
2793	}
2794
2795
2796
2797	/**
2798	* @interface_method_impl{RTVFSOBJOPS,pfnClose}
2799	*/
2800	static DECLCALLBACK(int) rtFsIsoDir_Close(void *pvThis)
2801	{
2802	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2803	LogFlow(("rtFsIsoDir_Close(%p/%p)\n", pThis, pThis->pShared));
2804
2805	PRTFSISODIRSHRD pShared = pThis->pShared;
2806	pThis->pShared = NULL;
2807	if (pShared)
2808	rtFsIsoDirShrd_Release(pShared);
2809	return VINF_SUCCESS;
2810	}
2811
2812
2813	/**
2814	* @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
2815	*/
2816	static DECLCALLBACK(int) rtFsIsoDir_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
2817	{
2818	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2819	return rtFsIsoCore_QueryInfo(&pThis->pShared->Core, pObjInfo, enmAddAttr);
2820	}
2821
2822
2823	/**
2824	* @interface_method_impl{RTVFSDIROPS,pfnOpen}
2825	*/
2826	static DECLCALLBACK(int) rtFsIsoDir_Open(void pvThis, const char pszEntry, uint64_t fOpen,
2827	uint32_t fFlags, PRTVFSOBJ phVfsObj)
2828	{
2829	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
2830	PRTFSISODIRSHRD pShared = pThis->pShared;
2831	int rc;
2832
2833	/*
2834	* We cannot create or replace anything, just open stuff.
2835	*/
2836	if ( (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_OPEN
2837	\|\| (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_OPEN_CREATE)
2838	{ /* likely */ }
2839	else
2840	return VERR_WRITE_PROTECT;
2841
2842	/*
2843	* Special cases '.' and '..'
2844	*/
2845	if (pszEntry[0] == '.')
2846	{
2847	PRTFSISODIRSHRD pSharedToOpen;
2848	if (pszEntry[1] == '\0')
2849	pSharedToOpen = pShared;
2850	else if (pszEntry[1] == '.' && pszEntry[2] == '\0')
2851	{
2852	pSharedToOpen = pShared->Core.pParentDir;
2853	if (!pSharedToOpen)
2854	pSharedToOpen = pShared;
2855	}
2856	else
2857	pSharedToOpen = NULL;
2858	if (pSharedToOpen)
2859	{
2860	if (fFlags & RTVFSOBJ_F_OPEN_DIRECTORY)
2861	{
2862	rtFsIsoDirShrd_Retain(pSharedToOpen);
2863	RTVFSDIR hVfsDir;
2864	rc = rtFsIsoDir_NewWithShared(pShared->Core.pVol, pSharedToOpen, &hVfsDir);
2865	if (RT_SUCCESS(rc))
2866	{
2867	*phVfsObj = RTVfsObjFromDir(hVfsDir);
2868	RTVfsDirRelease(hVfsDir);
2869	AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3);
2870	}
2871	}
2872	else
2873	rc = VERR_IS_A_DIRECTORY;
2874	return rc;
2875	}
2876	}
2877
2878	/*
2879	* Try open whatever it is.
2880	*/
2881	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
2882	{
2883
2884	/*
2885	* ISO 9660
2886	*/
2887	PCISO9660DIRREC pDirRec;
2888	uint64_t offDirRec;
2889	uint32_t cDirRecs;
2890	RTFMODE fMode;
2891	uint32_t uVersion;
2892	rc = rtFsIsoDir_FindEntry9660(pShared, pszEntry, &offDirRec, &pDirRec, &cDirRecs, &fMode, &uVersion);
2893	Log2(("rtFsIsoDir_Open: FindEntry9660(,%s,) -> %Rrc\n", pszEntry, rc));
2894	if (RT_SUCCESS(rc))
2895	{
2896	switch (fMode & RTFS_TYPE_MASK)
2897	{
2898	case RTFS_TYPE_FILE:
2899	if (fFlags & RTVFSOBJ_F_OPEN_FILE)
2900	{
2901	RTVFSFILE hVfsFile;
2902	rc = rtFsIsoFile_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs,
2903	offDirRec, fOpen, uVersion, &hVfsFile);
2904	if (RT_SUCCESS(rc))
2905	{
2906	*phVfsObj = RTVfsObjFromFile(hVfsFile);
2907	RTVfsFileRelease(hVfsFile);
2908	AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3);
2909	}
2910	}
2911	else
2912	rc = VERR_IS_A_FILE;
2913	break;
2914
2915	case RTFS_TYPE_DIRECTORY:
2916	if (fFlags & RTVFSOBJ_F_OPEN_DIRECTORY)
2917	{
2918	RTVFSDIR hVfsDir;
2919	rc = rtFsIsoDir_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs, offDirRec, &hVfsDir);
2920	if (RT_SUCCESS(rc))
2921	{
2922	*phVfsObj = RTVfsObjFromDir(hVfsDir);
2923	RTVfsDirRelease(hVfsDir);
2924	AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3);
2925	}
2926	}
2927	else
2928	rc = VERR_IS_A_DIRECTORY;
2929	break;
2930
2931	case RTFS_TYPE_SYMLINK:
2932	case RTFS_TYPE_DEV_BLOCK:
2933	case RTFS_TYPE_DEV_CHAR:
2934	case RTFS_TYPE_FIFO:
2935	case RTFS_TYPE_SOCKET:
2936	case RTFS_TYPE_WHITEOUT:
2937	rc = VERR_NOT_IMPLEMENTED;
2938	break;
2939
2940	default:
2941	rc = VERR_PATH_NOT_FOUND;
2942	break;
2943	}
2944	}
2945	}
2946	else
2947	{
2948	/*
2949	* UDF
2950	*/
2951	PCUDFFILEIDDESC pFid;
2952	rc = rtFsIsoDir_FindEntryUdf(pShared, pszEntry, &pFid);
2953	Log2(("rtFsIsoDir_Open: FindEntryUdf(,%s,) -> %Rrc\n", pszEntry, rc));
2954	if (RT_SUCCESS(rc))
2955	{
2956	if (!(pFid->fFlags & UDF_FILE_FLAGS_DELETED))
2957	{
2958	if (!(pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY))
2959	{
2960	if (fFlags & RTVFSOBJ_F_OPEN_FILE)
2961	{
2962	RTVFSFILE hVfsFile;
2963	rc = rtFsIsoFile_NewUdf(pShared->Core.pVol, pShared, pFid, fOpen, &hVfsFile);
2964	if (RT_SUCCESS(rc))
2965	{
2966	*phVfsObj = RTVfsObjFromFile(hVfsFile);
2967	RTVfsFileRelease(hVfsFile);
2968	AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3);
2969	}
2970	}
2971	else
2972	rc = VERR_IS_A_FILE;
2973	}
2974	else
2975	{
2976	if (fFlags & RTVFSOBJ_F_OPEN_DIRECTORY)
2977	{
2978	RTVFSDIR hVfsDir;
2979	rc = rtFsIsoDir_NewUdf(pShared->Core.pVol, pShared, pFid, &hVfsDir);
2980	if (RT_SUCCESS(rc))
2981	{
2982	*phVfsObj = RTVfsObjFromDir(hVfsDir);
2983	RTVfsDirRelease(hVfsDir);
2984	AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3);
2985	}
2986	}
2987	else
2988	rc = VERR_IS_A_DIRECTORY;
2989	}
2990	}
2991	/* We treat UDF_FILE_FLAGS_DELETED like RTFS_TYPE_WHITEOUT for now. */
2992	else
2993	rc = VERR_PATH_NOT_FOUND;
2994	}
2995	}
2996	return rc;
2997
2998	}
2999
3000
3001	/**
3002	* @interface_method_impl{RTVFSDIROPS,pfnCreateDir}
3003	*/
3004	static DECLCALLBACK(int) rtFsIsoDir_CreateDir(void pvThis, const char pszSubDir, RTFMODE fMode, PRTVFSDIR phVfsDir)
3005	{
3006	RT_NOREF(pvThis, pszSubDir, fMode, phVfsDir);
3007	return VERR_WRITE_PROTECT;
3008	}
3009
3010
3011	/**
3012	* @interface_method_impl{RTVFSDIROPS,pfnOpenSymlink}
3013	*/
3014	static DECLCALLBACK(int) rtFsIsoDir_OpenSymlink(void pvThis, const char pszSymlink, PRTVFSSYMLINK phVfsSymlink)
3015	{
3016	RT_NOREF(pvThis, pszSymlink, phVfsSymlink);
3017	return VERR_NOT_SUPPORTED;
3018	}
3019
3020
3021	/**
3022	* @interface_method_impl{RTVFSDIROPS,pfnCreateSymlink}
3023	*/
3024	static DECLCALLBACK(int) rtFsIsoDir_CreateSymlink(void pvThis, const char pszSymlink, const char *pszTarget,
3025	RTSYMLINKTYPE enmType, PRTVFSSYMLINK phVfsSymlink)
3026	{
3027	RT_NOREF(pvThis, pszSymlink, pszTarget, enmType, phVfsSymlink);
3028	return VERR_WRITE_PROTECT;
3029	}
3030
3031
3032	/**
3033	* @interface_method_impl{RTVFSDIROPS,pfnUnlinkEntry}
3034	*/
3035	static DECLCALLBACK(int) rtFsIsoDir_UnlinkEntry(void pvThis, const char pszEntry, RTFMODE fType)
3036	{
3037	RT_NOREF(pvThis, pszEntry, fType);
3038	return VERR_WRITE_PROTECT;
3039	}
3040
3041
3042	/**
3043	* @interface_method_impl{RTVFSDIROPS,pfnRenameEntry}
3044	*/
3045	static DECLCALLBACK(int) rtFsIsoDir_RenameEntry(void pvThis, const char pszEntry, RTFMODE fType, const char *pszNewName)
3046	{
3047	RT_NOREF(pvThis, pszEntry, fType, pszNewName);
3048	return VERR_WRITE_PROTECT;
3049	}
3050
3051
3052	/**
3053	* @interface_method_impl{RTVFSDIROPS,pfnRewindDir}
3054	*/
3055	static DECLCALLBACK(int) rtFsIsoDir_RewindDir(void *pvThis)
3056	{
3057	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
3058	pThis->offDir = 0;
3059	return VINF_SUCCESS;
3060	}
3061
3062
3063	/**
3064	* The ISO 9660 worker for rtFsIsoDir_ReadDir
3065	*/
3066	static int rtFsIsoDir_ReadDir9660(PRTFSISODIROBJ pThis, PRTFSISODIRSHRD pShared, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry,
3067	RTFSOBJATTRADD enmAddAttr)
3068	{
3069	while (pThis->offDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= pShared->cbDir)
3070	{
3071	PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pShared->pbDir[pThis->offDir];
3072
3073	/* If null length, skip to the next sector. */
3074	if (pDirRec->cbDirRec == 0)
3075	pThis->offDir = (pThis->offDir + pShared->Core.pVol->cbSector) & ~(pShared->Core.pVol->cbSector - 1U);
3076	else
3077	{
3078	/*
3079	* Do names first as they may cause overflows.
3080	*/
3081	uint32_t uVersion = 0;
3082	if ( pDirRec->bFileIdLength == 1
3083	&& pDirRec->achFileId[0] == '\0')
3084	{
3085	if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2)
3086	{
3087	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2;
3088	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW (dot)\n"));
3089	return VERR_BUFFER_OVERFLOW;
3090	}
3091	pDirEntry->cbName = 1;
3092	pDirEntry->szName[0] = '.';
3093	pDirEntry->szName[1] = '\0';
3094	}
3095	else if ( pDirRec->bFileIdLength == 1
3096	&& pDirRec->achFileId[0] == '\1')
3097	{
3098	if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 3)
3099	{
3100	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 3;
3101	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW (dot-dot)\n"));
3102	return VERR_BUFFER_OVERFLOW;
3103	}
3104	pDirEntry->cbName = 2;
3105	pDirEntry->szName[0] = '.';
3106	pDirEntry->szName[1] = '.';
3107	pDirEntry->szName[2] = '\0';
3108	}
3109	else if (pShared->Core.pVol->fIsUtf16)
3110	{
3111	PCRTUTF16 pawcSrc = (PCRTUTF16)&pDirRec->achFileId[0];
3112	size_t cwcSrc = pDirRec->bFileIdLength / sizeof(RTUTF16);
3113	size_t cwcVer = !(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
3114	? rtFsIso9660GetVersionLengthUtf16Big(pawcSrc, cwcSrc, &uVersion) : 0;
3115	size_t cchNeeded = 0;
3116	size_t cbDst = *pcbDirEntry - RT_UOFFSETOF(RTDIRENTRYEX, szName);
3117	char *pszDst = pDirEntry->szName;
3118
3119	int rc = RTUtf16BigToUtf8Ex(pawcSrc, cwcSrc - cwcVer, &pszDst, cbDst, &cchNeeded);
3120	if (RT_SUCCESS(rc))
3121	pDirEntry->cbName = (uint16_t)cchNeeded;
3122	else if (rc == VERR_BUFFER_OVERFLOW)
3123	{
3124	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchNeeded + 1;
3125	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cchNeeded=%zu (UTF-16BE)\n", cbDst, cchNeeded));
3126	return VERR_BUFFER_OVERFLOW;
3127	}
3128	else
3129	{
3130	ssize_t cchNeeded2 = RTStrPrintf2(pszDst, cbDst, "bad-name-%#x", pThis->offDir);
3131	if (cchNeeded2 >= 0)
3132	pDirEntry->cbName = (uint16_t)cchNeeded2;
3133	else
3134	{
3135	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + (size_t)-cchNeeded2;
3136	return VERR_BUFFER_OVERFLOW;
3137	}
3138	}
3139	}
3140	else
3141	{
3142	/* This is supposed to be upper case ASCII, however, purge the encoding anyway. */
3143	size_t cchVer = !(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)
3144	? rtFsIso9660GetVersionLengthAscii(pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion) : 0;
3145	size_t cchName = pDirRec->bFileIdLength - cchVer;
3146	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchName + 1;
3147	if (*pcbDirEntry < cbNeeded)
3148	{
3149	Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (ASCII)\n", *pcbDirEntry, cbNeeded));
3150	*pcbDirEntry = cbNeeded;
3151	return VERR_BUFFER_OVERFLOW;
3152	}
3153	pDirEntry->cbName = (uint16_t)cchName;
3154	memcpy(pDirEntry->szName, pDirRec->achFileId, cchName);
3155	pDirEntry->szName[cchName] = '\0';
3156	RTStrPurgeEncoding(pDirEntry->szName);
3157
3158	/** @todo check for rock ridge names here. */
3159	}
3160	pDirEntry->cwcShortName = 0;
3161	pDirEntry->wszShortName[0] = '\0';
3162
3163	/*
3164	* To avoid duplicating code in rtFsIsoCore_InitFrom9660DirRec and
3165	* rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack.
3166	*/
3167	RTFSISOCORE TmpObj;
3168	RT_ZERO(TmpObj);
3169	rtFsIsoCore_InitFrom9660DirRec(&TmpObj, pDirRec, 1 /* cDirRecs - see below why 1 */,
3170	pThis->offDir + pShared->Core.FirstExtent.off, uVersion, pShared->Core.pVol);
3171	int rc = rtFsIsoCore_QueryInfo(&TmpObj, &pDirEntry->Info, enmAddAttr);
3172
3173	/*
3174	* Update the directory location and handle multi extent records.
3175	*
3176	* Multi extent records only affect the file size and the directory location,
3177	* so we deal with it here instead of involving * rtFsIsoCore_InitFrom9660DirRec
3178	* which would potentially require freeing memory and such.
3179	*/
3180	if (!(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
3181	{
3182	Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc));
3183	pThis->offDir += pDirRec->cbDirRec;
3184	}
3185	else
3186	{
3187	uint32_t cExtents = 1;
3188	uint32_t offDir = pThis->offDir + pDirRec->cbDirRec;
3189	while (offDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= pShared->cbDir)
3190	{
3191	PCISO9660DIRREC pDirRec2 = (PCISO9660DIRREC)&pShared->pbDir[offDir];
3192	if (pDirRec2->cbDirRec != 0)
3193	{
3194	pDirEntry->Info.cbObject += ISO9660_GET_ENDIAN(&pDirRec2->cbData);
3195	offDir += pDirRec2->cbDirRec;
3196	cExtents++;
3197	if (!(pDirRec2->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT))
3198	break;
3199	}
3200	else
3201	offDir = (offDir + pShared->Core.pVol->cbSector) & ~(pShared->Core.pVol->cbSector - 1U);
3202	}
3203	Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x, %u extents ending at %#07x: %s (rc=%Rrc)\n",
3204	pThis->offDir, cExtents, offDir, pDirEntry->szName, rc));
3205	pThis->offDir = offDir;
3206	}
3207
3208	return rc;
3209	}
3210	}
3211
3212	Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x: VERR_NO_MORE_FILES\n", pThis->offDir));
3213	return VERR_NO_MORE_FILES;
3214	}
3215
3216
3217	/**
3218	* The UDF worker for rtFsIsoDir_ReadDir
3219	*/
3220	static int rtFsIsoDir_ReadDirUdf(PRTFSISODIROBJ pThis, PRTFSISODIRSHRD pShared, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry,
3221	RTFSOBJATTRADD enmAddAttr)
3222	{
3223	/*
3224	* At offset zero we've got the '.' entry. This has to be generated
3225	* manually as it's not part of the directory content. The directory
3226	* offset has to be faked for this too, so offDir == 0 indicates the '.'
3227	* entry whereas offDir == 1 is the first file id descriptor.
3228	*/
3229	if (pThis->offDir == 0)
3230	{
3231	if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2)
3232	{
3233	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2;
3234	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW (dot)\n"));
3235	return VERR_BUFFER_OVERFLOW;
3236	}
3237	pDirEntry->cbName = 1;
3238	pDirEntry->szName[0] = '.';
3239	pDirEntry->szName[1] = '\0';
3240	pDirEntry->cwcShortName = 0;
3241	pDirEntry->wszShortName[0] = '\0';
3242
3243	int rc = rtFsIsoCore_QueryInfo(&pShared->Core, &pDirEntry->Info, enmAddAttr);
3244
3245	Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc));
3246	pThis->offDir = 1;
3247	return rc;
3248	}
3249
3250	/*
3251	* Do the directory content.
3252	*/
3253	while (pThis->offDir + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) <= pShared->cbDir + 1)
3254	{
3255	PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pShared->pbDir[pThis->offDir - 1];
3256	uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid);
3257
3258	if (pThis->offDir + cbFid <= pShared->cbDir + 1)
3259	{ /* likely */ }
3260	else
3261	break;
3262
3263	/*
3264	* Do names first as they may cause overflows.
3265	*/
3266	if (pFid->cbName > 1)
3267	{
3268	uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid);
3269	uint32_t cbSrc = pFid->cbName;
3270	if (*pbName == 8)
3271	{
3272	/* Figure out the UTF-8 length first. */
3273	bool fSimple = true;
3274	uint32_t cchDst = 0;
3275	for (uint32_t offSrc = 1; offSrc < cbSrc; offSrc++)
3276	if (!(pbName[offSrc] & 0x80))
3277	cchDst++;
3278	else
3279	{
3280	cchDst += 2;
3281	fSimple = false;
3282	}
3283
3284	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchDst + 1;
3285	if (*pcbDirEntry >= cbNeeded)
3286	{
3287	if (fSimple)
3288	{
3289	Assert(cbSrc - 1 == cchDst);
3290	memcpy(pDirEntry->szName, &pbName[1], cchDst);
3291	pDirEntry->szName[cchDst] = '\0';
3292	}
3293	else
3294	{
3295	char *pszDst = pDirEntry->szName;
3296	for (uint32_t offSrc = 1; offSrc < cbSrc; offSrc++)
3297	pszDst = RTStrPutCp(pszDst, pbName[offSrc]);
3298	*pszDst = '\0';
3299	Assert((size_t)(pszDst - &pDirEntry->szName[0]) == cchDst);
3300	}
3301	}
3302	else
3303	{
3304	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (8-bit)\n", *pcbDirEntry, cbNeeded));
3305	*pcbDirEntry = cbNeeded;
3306	return VERR_BUFFER_OVERFLOW;
3307	}
3308	}
3309	else
3310	{
3311	/* Let RTUtf16BigToUtf8Ex do the bounds checking. */
3312	char *pszDst = pDirEntry->szName;
3313	size_t cbDst = *pcbDirEntry - RT_UOFFSETOF(RTDIRENTRYEX, szName);
3314	size_t cchNeeded = 0;
3315	int rc;
3316	if (*pbName == 16)
3317	rc = RTUtf16BigToUtf8Ex((PCRTUTF16)(pbName + 1), (cbSrc - 1) / sizeof(RTUTF16), &pszDst, cbDst, &cchNeeded);
3318	else
3319	rc = VERR_INVALID_NAME;
3320	if (RT_SUCCESS(rc))
3321	pDirEntry->cbName = (uint16_t)cchNeeded;
3322	else if (rc == VERR_BUFFER_OVERFLOW)
3323	{
3324	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchNeeded + 1;
3325	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cchNeeded=%zu (16-bit)\n", cbDst, cchNeeded));
3326	return VERR_BUFFER_OVERFLOW;
3327	}
3328	else
3329	{
3330	LogRelMax(90, ("ISO/UDF: Malformed directory entry name at %#x: %.*Rhxs\n", pThis->offDir - 1, cbSrc, pbName));
3331	ssize_t cchNeeded2 = RTStrPrintf2(pszDst, cbDst, "bad-name-%#x", pThis->offDir - 1);
3332	if (cchNeeded2 >= 0)
3333	pDirEntry->cbName = (uint16_t)cchNeeded2;
3334	else
3335	{
3336	*pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + (size_t)-cchNeeded2;
3337	return VERR_BUFFER_OVERFLOW;
3338	}
3339	}
3340	}
3341	}
3342	else if (pFid->fFlags & UDF_FILE_FLAGS_PARENT)
3343	{
3344	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2 + 1;
3345	if (*pcbDirEntry < cbNeeded)
3346	{
3347	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (dot-dot)\n", *pcbDirEntry, cbNeeded));
3348	*pcbDirEntry = cbNeeded;
3349	return VERR_BUFFER_OVERFLOW;
3350	}
3351	pDirEntry->cbName = 2;
3352	pDirEntry->szName[0] = '.';
3353	pDirEntry->szName[1] = '.';
3354	pDirEntry->szName[2] = '\0';
3355	}
3356	else
3357	{
3358	size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 1;
3359	if (*pcbDirEntry < cbNeeded)
3360	{
3361	Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (empty)\n", *pcbDirEntry, cbNeeded));
3362	*pcbDirEntry = cbNeeded;
3363	return VERR_BUFFER_OVERFLOW;
3364	}
3365	pDirEntry->cbName = 0;
3366	pDirEntry->szName[0] = '\0';
3367	}
3368
3369	pDirEntry->cwcShortName = 0;
3370	pDirEntry->wszShortName[0] = '\0';
3371
3372	/*
3373	* To avoid duplicating code in rtFsIsoCore_InitUdf and
3374	* rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack.
3375	*/
3376	RTFSISOCORE TmpObj;
3377	RT_ZERO(TmpObj);
3378	int rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&TmpObj, &pFid->Icb, pFid, pThis->offDir - 1, pShared->Core.pVol);
3379	if (RT_SUCCESS(rc))
3380	{
3381	rc = rtFsIsoCore_QueryInfo(&TmpObj, &pDirEntry->Info, enmAddAttr);
3382	rtFsIsoCore_Destroy(&TmpObj);
3383	}
3384
3385	/*
3386	* Update.
3387	*/
3388	Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc));
3389	pThis->offDir += cbFid;
3390
3391	return rc;
3392	}
3393
3394	Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: VERR_NO_MORE_FILES\n", pThis->offDir));
3395	return VERR_NO_MORE_FILES;
3396	}
3397
3398
3399	/**
3400	* @interface_method_impl{RTVFSDIROPS,pfnReadDir}
3401	*/
3402	static DECLCALLBACK(int) rtFsIsoDir_ReadDir(void pvThis, PRTDIRENTRYEX pDirEntry, size_t pcbDirEntry,
3403	RTFSOBJATTRADD enmAddAttr)
3404	{
3405	PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis;
3406	PRTFSISODIRSHRD pShared = pThis->pShared;
3407	int rc;
3408	if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF)
3409	rc = rtFsIsoDir_ReadDir9660(pThis, pShared, pDirEntry, pcbDirEntry, enmAddAttr);
3410	else
3411	rc = rtFsIsoDir_ReadDirUdf(pThis, pShared, pDirEntry, pcbDirEntry, enmAddAttr);
3412	return rc;
3413	}
3414
3415
3416	/**
3417	* ISO file operations.
3418	*/
3419	static const RTVFSDIROPS g_rtFsIsoDirOps =
3420	{
3421	{ /* Obj */
3422	RTVFSOBJOPS_VERSION,
3423	RTVFSOBJTYPE_DIR,
3424	"ISO 9660 Dir",
3425	rtFsIsoDir_Close,
3426	rtFsIsoDir_QueryInfo,
3427	RTVFSOBJOPS_VERSION
3428	},
3429	RTVFSDIROPS_VERSION,
3430	0,
3431	{ /* ObjSet */
3432	RTVFSOBJSETOPS_VERSION,
3433	RT_UOFFSETOF(RTVFSDIROPS, ObjSet) - RT_UOFFSETOF(RTVFSDIROPS, Obj),
3434	NULL /SetMode/,
3435	NULL /SetTimes/,
3436	NULL /SetOwner/,
3437	RTVFSOBJSETOPS_VERSION
3438	},
3439	rtFsIsoDir_Open,
3440	NULL /* pfnFollowAbsoluteSymlink */,
3441	NULL /* pfnOpenFile */,
3442	NULL /* pfnOpenDir */,
3443	rtFsIsoDir_CreateDir,
3444	rtFsIsoDir_OpenSymlink,
3445	rtFsIsoDir_CreateSymlink,
3446	NULL /* pfnQueryEntryInfo */,
3447	rtFsIsoDir_UnlinkEntry,
3448	rtFsIsoDir_RenameEntry,
3449	rtFsIsoDir_RewindDir,
3450	rtFsIsoDir_ReadDir,
3451	RTVFSDIROPS_VERSION,
3452	};
3453
3454
3455	/**
3456	* Adds an open child to the parent directory's shared structure.
3457	*
3458	* Maintains an additional reference to the parent dir to prevent it from going
3459	* away. If @a pDir is the root directory, it also ensures the volume is
3460	* referenced and sticks around until the last open object is gone.
3461	*
3462	* @param pDir The directory.
3463	* @param pChild The child being opened.
3464	* @sa rtFsIsoDirShrd_RemoveOpenChild
3465	*/
3466	static void rtFsIsoDirShrd_AddOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild)
3467	{
3468	rtFsIsoDirShrd_Retain(pDir);
3469
3470	RTListAppend(&pDir->OpenChildren, &pChild->Entry);
3471	pChild->pParentDir = pDir;
3472	}
3473
3474
3475	/**
3476	* Removes an open child to the parent directory.
3477	*
3478	* @param pDir The directory.
3479	* @param pChild The child being removed.
3480	*
3481	* @remarks This is the very last thing you do as it may cause a few other
3482	* objects to be released recursively (parent dir and the volume).
3483	*
3484	* @sa rtFsIsoDirShrd_AddOpenChild
3485	*/
3486	static void rtFsIsoDirShrd_RemoveOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild)
3487	{
3488	AssertReturnVoid(pChild->pParentDir == pDir);
3489	RTListNodeRemove(&pChild->Entry);
3490	pChild->pParentDir = NULL;
3491
3492	rtFsIsoDirShrd_Release(pDir);
3493	}
3494
3495
3496	#ifdef LOG_ENABLED
3497	/**
3498	* Logs the content of a directory.
3499	*/
3500	static void rtFsIsoDirShrd_Log9660Content(PRTFSISODIRSHRD pThis)
3501	{
3502	if (LogIs2Enabled())
3503	{
3504	uint32_t offRec = 0;
3505	while (offRec < pThis->cbDir)
3506	{
3507	PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offRec];
3508	if (pDirRec->cbDirRec == 0)
3509	break;
3510
3511	RTUTF16 wszName[128];
3512	if (pThis->Core.pVol->fIsUtf16)
3513	{
3514	PRTUTF16 pwszDst = &wszName[pDirRec->bFileIdLength / sizeof(RTUTF16)];
3515	PCRTUTF16 pwszSrc = (PCRTUTF16)&pDirRec->achFileId[pDirRec->bFileIdLength];
3516	pwszSrc--;
3517	*pwszDst-- = '\0';
3518	while ((uintptr_t)pwszDst >= (uintptr_t)&wszName[0])
3519	{
3520	pwszDst = RT_BE2H_U16(pwszSrc);
3521	pwszDst--;
3522	pwszSrc--;
3523	}
3524	}
3525	else
3526	{
3527	PRTUTF16 pwszDst = wszName;
3528	for (uint32_t off = 0; off < pDirRec->bFileIdLength; off++)
3529	*pwszDst++ = pDirRec->achFileId[off];
3530	*pwszDst = '\0';
3531	}
3532
3533	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",
3534	offRec,
3535	pDirRec->cbDirRec,
3536	pDirRec->cExtAttrBlocks,
3537	ISO9660_GET_ENDIAN(&pDirRec->cbData),
3538	ISO9660_GET_ENDIAN(&pDirRec->offExtent),
3539	pDirRec->fFileFlags,
3540	pDirRec->RecTime.bYear + 1900,
3541	pDirRec->RecTime.bMonth,
3542	pDirRec->RecTime.bDay,
3543	pDirRec->RecTime.bHour,
3544	pDirRec->RecTime.bMinute,
3545	pDirRec->RecTime.bSecond,
3546	pDirRec->RecTime.offUtc*4/60,
3547	pDirRec->bFileUnitSize,
3548	pDirRec->bInterleaveGapSize,
3549	ISO9660_GET_ENDIAN(&pDirRec->VolumeSeqNo),
3550	wszName));
3551
3552	uint32_t offSysUse = RT_UOFFSETOF_DYN(ISO9660DIRREC, achFileId[pDirRec->bFileIdLength])
3553	+ !(pDirRec->bFileIdLength & 1);
3554	if (offSysUse < pDirRec->cbDirRec)
3555	{
3556	Log2(("ISO9660: system use (%#x bytes):\n%.*RhxD\n", pDirRec->cbDirRec - offSysUse,
3557	pDirRec->cbDirRec - offSysUse, (uint8_t *)pDirRec + offSysUse));
3558	}
3559
3560	/* advance */
3561	offRec += pDirRec->cbDirRec;
3562	}
3563	}
3564	}
3565	#endif /* LOG_ENABLED */
3566
3567
3568	/**
3569	* Instantiates a new shared directory structure, given 9660 records.
3570	*
3571	* @returns IPRT status code.
3572	* @param pThis The ISO volume instance.
3573	* @param pParentDir The parent directory. This is NULL for the root
3574	* directory.
3575	* @param pDirRec The directory record. Will access @a cDirRecs
3576	* records.
3577	* @param cDirRecs Number of directory records if more than one.
3578	* @param offDirRec The byte offset of the directory record.
3579	* @param ppShared Where to return the shared directory structure.
3580	*/
3581	static int rtFsIsoDirShrd_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec,
3582	uint32_t cDirRecs, uint64_t offDirRec, PRTFSISODIRSHRD *ppShared)
3583	{
3584	/*
3585	* Allocate a new structure and initialize it.
3586	*/
3587	int rc = VERR_NO_MEMORY;
3588	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)RTMemAllocZ(sizeof(*pShared));
3589	if (pShared)
3590	{
3591	rc = rtFsIsoCore_InitFrom9660DirRec(&pShared->Core, pDirRec, cDirRecs, offDirRec, 0 /uVersion/, pThis);
3592	if (RT_SUCCESS(rc))
3593	{
3594	RTListInit(&pShared->OpenChildren);
3595	pShared->cbDir = ISO9660_GET_ENDIAN(&pDirRec->cbData);
3596	pShared->pbDir = (uint8_t *)RTMemAllocZ(pShared->cbDir + 256);
3597	if (pShared->pbDir)
3598	{
3599	rc = RTVfsFileReadAt(pThis->hVfsBacking, pShared->Core.FirstExtent.off, pShared->pbDir, pShared->cbDir, NULL);
3600	if (RT_SUCCESS(rc))
3601	{
3602	#ifdef LOG_ENABLED
3603	rtFsIsoDirShrd_Log9660Content(pShared);
3604	#endif
3605
3606	/*
3607	* Link into parent directory so we can use it to update
3608	* our directory entry.
3609	*/
3610	if (pParentDir)
3611	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
3612	*ppShared = pShared;
3613	return VINF_SUCCESS;
3614	}
3615	}
3616	else
3617	rc = VERR_NO_MEMORY;
3618	}
3619	RTMemFree(pShared);
3620	}
3621	*ppShared = NULL;
3622	return rc;
3623	}
3624
3625
3626	#ifdef LOG_ENABLED
3627	/**
3628	* Logs the content of a directory.
3629	*/
3630	static void rtFsIsoDirShrd_LogUdfContent(PRTFSISODIRSHRD pThis)
3631	{
3632	if (LogIs2Enabled())
3633	{
3634	uint32_t offDesc = 0;
3635	while (offDesc + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) < pThis->cbDir)
3636	{
3637	PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pThis->pbDir[offDesc];
3638	uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid);
3639	if (offDesc + cbFid > pThis->cbDir)
3640	break;
3641
3642	uint32_t cwcName = 0;
3643	RTUTF16 wszName[260];
3644	if (pFid->cbName > 0)
3645	{
3646	uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid);
3647	uint32_t offSrc = 1;
3648	if (*pbName == 8)
3649	while (offSrc < pFid->cbName)
3650	{
3651	wszName[cwcName] = pbName[offSrc];
3652	cwcName++;
3653	offSrc++;
3654	}
3655	else if (*pbName == 16)
3656	while (offSrc + 1 <= pFid->cbName)
3657	{
3658	wszName[cwcName] = RT_MAKE_U16(pbName[offSrc + 1], pbName[offSrc]);
3659	cwcName++;
3660	offSrc += 2;
3661	}
3662	else
3663	{
3664	RTUtf16CopyAscii(wszName, RT_ELEMENTS(wszName), "<bad type>");
3665	cwcName = 10;
3666	}
3667	}
3668	else if (pFid->fFlags & UDF_FILE_FLAGS_PARENT)
3669	{
3670	wszName[0] = '.';
3671	wszName[1] = '.';
3672	cwcName = 2;
3673	}
3674	else
3675	{
3676	RTUtf16CopyAscii(wszName, RT_ELEMENTS(wszName), "<empty>");
3677	cwcName = 7;
3678	}
3679	wszName[cwcName] = '\0';
3680
3681	Log2(("ISO/UDF: %04x: fFlags=%#x uVer=%u Icb={%#04x:%#010RX32 LB %#06x t=%u} cbName=%#04x cbIU=%#x '%ls'\n",
3682	offDesc,
3683	pFid->fFlags,
3684	pFid->uVersion,
3685	pFid->Icb.Location.uPartitionNo,
3686	pFid->Icb.Location.off,
3687	pFid->Icb.cb,
3688	pFid->Icb.uType,
3689	pFid->cbName,
3690	pFid->cbImplementationUse,
3691	wszName));
3692	int rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pFid->Tag, pThis->cbDir - offDesc,
3693	UDF_TAG_ID_FILE_ID_DESC, pFid->Tag.offTag, NULL);
3694	if (RT_FAILURE(rc))
3695	Log2(("ISO/UDF: Bad Tag: %Rrc - idTag=%#x\n", rc, pFid->Tag.idTag));
3696	if (pFid->cbImplementationUse > 32)
3697	Log2(("ISO/UDF: impl use (%#x bytes):\n%.*RhxD\n",
3698	pFid->cbImplementationUse, pFid->cbImplementationUse, pFid->abImplementationUse));
3699	else if (pFid->cbImplementationUse > 0)
3700	Log2(("ISO/UDF: impl use (%#x bytes): %.*Rhxs\n",
3701	pFid->cbImplementationUse, pFid->cbImplementationUse, pFid->abImplementationUse));
3702
3703	/* advance */
3704	offDesc += cbFid;
3705	}
3706
3707	if (offDesc < pThis->cbDir)
3708	Log2(("ISO/UDF: warning! %#x trailing bytes in directory:\n%.*RhxD\n",
3709	pThis->cbDir - offDesc, pThis->cbDir - offDesc, &pThis->pbDir[offDesc]));
3710	}
3711	}
3712	#endif /* LOG_ENABLED */
3713
3714
3715	/**
3716	* Instantiates a new shared directory structure, given UDF descriptors.
3717	*
3718	* @returns IPRT status code.
3719	* @param pThis The ISO volume instance.
3720	* @param pParentDir The parent directory. This is NULL for the root
3721	* directory.
3722	* @param pAllocDesc The allocation descriptor for the directory ICB.
3723	* @param pFileIdDesc The file ID descriptor. This is NULL for the root.
3724	* @param offInDir The offset of the file ID descriptor in the parent
3725	* directory. This is used when looking up shared
3726	* directory objects. (Pass 0 for root.)
3727	* @param ppShared Where to return the shared directory structure.
3728	*/
3729	static int rtFsIsoDirShrd_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFLONGAD pAllocDesc,
3730	PCUDFFILEIDDESC pFileIdDesc, uintptr_t offInDir, PRTFSISODIRSHRD *ppShared)
3731	{
3732	/*
3733	* Allocate a new structure and initialize it.
3734	*/
3735	int rc = VERR_NO_MEMORY;
3736	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)RTMemAllocZ(sizeof(*pShared));
3737	if (pShared)
3738	{
3739	rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&pShared->Core, pAllocDesc, pFileIdDesc, offInDir, pThis);
3740	if (RT_SUCCESS(rc))
3741	{
3742	RTListInit(&pShared->OpenChildren);
3743
3744	if (pShared->Core.cbObject < RTFSISO_MAX_DIR_SIZE)
3745	{
3746	pShared->cbDir = (uint32_t)pShared->Core.cbObject;
3747	pShared->pbDir = (uint8_t *)RTMemAllocZ(RT_MAX(RT_ALIGN_32(pShared->cbDir, 512), 512));
3748	if (pShared->pbDir)
3749	{
3750	rc = rtFsIsoCore_ReadWorker(&pShared->Core, 0, pShared->pbDir, pShared->cbDir, NULL, NULL);
3751	if (RT_SUCCESS(rc))
3752	{
3753	#ifdef LOG_ENABLED
3754	rtFsIsoDirShrd_LogUdfContent(pShared);
3755	#endif
3756
3757	/*
3758	* Link into parent directory so we can use it to update
3759	* our directory entry.
3760	*/
3761	if (pParentDir)
3762	rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core);
3763	*ppShared = pShared;
3764	return VINF_SUCCESS;
3765	}
3766	}
3767	else
3768	rc = VERR_NO_MEMORY;
3769	}
3770	}
3771	RTMemFree(pShared);
3772	}
3773
3774	*ppShared = NULL;
3775	return rc;
3776	}
3777
3778
3779	/**
3780	* Instantiates a new directory with a shared structure presupplied.
3781	*
3782	* @returns IPRT status code.
3783	* @param pThis The ISO volume instance.
3784	* @param pShared Referenced pointer to the shared structure. The
3785	* reference is always CONSUMED.
3786	* @param phVfsDir Where to return the directory handle.
3787	*/
3788	static int rtFsIsoDir_NewWithShared(PRTFSISOVOL pThis, PRTFSISODIRSHRD pShared, PRTVFSDIR phVfsDir)
3789	{
3790	/*
3791	* Create VFS object around the shared structure.
3792	*/
3793	PRTFSISODIROBJ pNewDir;
3794	int rc = RTVfsNewDir(&g_rtFsIsoDirOps, sizeof(pNewDir), 0 /fFlags*/, pThis->hVfsSelf,
3795	NIL_RTVFSLOCK /use volume lock/, phVfsDir, (void **)&pNewDir);
3796	if (RT_SUCCESS(rc))
3797	{
3798	/*
3799	* Look for existing shared object, create a new one if necessary.
3800	* We CONSUME a reference to pShared here.
3801	*/
3802	pNewDir->offDir = 0;
3803	pNewDir->pShared = pShared;
3804	return VINF_SUCCESS;
3805	}
3806
3807	rtFsIsoDirShrd_Release(pShared);
3808	*phVfsDir = NIL_RTVFSDIR;
3809	return rc;
3810	}
3811
3812
3813
3814	/**
3815	* Instantiates a new directory VFS instance for ISO 9660, creating the shared
3816	* structure as necessary.
3817	*
3818	* @returns IPRT status code.
3819	* @param pThis The ISO volume instance.
3820	* @param pParentDir The parent directory. This is NULL for the root
3821	* directory.
3822	* @param pDirRec The directory record.
3823	* @param cDirRecs Number of directory records if more than one.
3824	* @param offDirRec The byte offset of the directory record.
3825	* @param phVfsDir Where to return the directory handle.
3826	*/
3827	static int rtFsIsoDir_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec,
3828	uint32_t cDirRecs, uint64_t offDirRec, PRTVFSDIR phVfsDir)
3829	{
3830	/*
3831	* Look for existing shared object, create a new one if necessary.
3832	*/
3833	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)rtFsIsoDir_LookupShared(pParentDir, offDirRec);
3834	if (!pShared)
3835	{
3836	int rc = rtFsIsoDirShrd_New9660(pThis, pParentDir, pDirRec, cDirRecs, offDirRec, &pShared);
3837	if (RT_FAILURE(rc))
3838	{
3839	*phVfsDir = NIL_RTVFSDIR;
3840	return rc;
3841	}
3842	}
3843	return rtFsIsoDir_NewWithShared(pThis, pShared, phVfsDir);
3844	}
3845
3846
3847	/**
3848	* Instantiates a new directory VFS instance for UDF, creating the shared
3849	* structure as necessary.
3850	*
3851	* @returns IPRT status code.
3852	* @param pThis The ISO volume instance.
3853	* @param pParentDir The parent directory.
3854	* @param pFid The file ID descriptor for the directory.
3855	* @param phVfsDir Where to return the directory handle.
3856	*/
3857	static int rtFsIsoDir_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, PRTVFSDIR phVfsDir)
3858	{
3859	Assert(pFid);
3860	Assert(pParentDir);
3861	uintptr_t const offInDir = (uintptr_t)pFid - (uintptr_t)pParentDir->pbDir;
3862	Assert(offInDir < pParentDir->cbDir);
3863
3864	/*
3865	* Look for existing shared object, create a new one if necessary.
3866	*/
3867	PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)rtFsIsoDir_LookupShared(pParentDir, offInDir);
3868	if (!pShared)
3869	{
3870	int rc = rtFsIsoDirShrd_NewUdf(pThis, pParentDir, &pFid->Icb, pFid, offInDir, &pShared);
3871	if (RT_FAILURE(rc))
3872	{
3873	*phVfsDir = NIL_RTVFSDIR;
3874	return rc;
3875	}
3876	}
3877	return rtFsIsoDir_NewWithShared(pThis, pShared, phVfsDir);
3878	}
3879
3880
3881	/**
3882	* @interface_method_impl{RTVFSOBJOPS::Obj,pfnClose}
3883	*/
3884	static DECLCALLBACK(int) rtFsIsoVol_Close(void *pvThis)
3885	{
3886	PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis;
3887	Log(("rtFsIsoVol_Close(%p)\n", pThis));
3888
3889	if (pThis->pRootDir)
3890	{
3891	Assert(RTListIsEmpty(&pThis->pRootDir->OpenChildren));
3892	Assert(pThis->pRootDir->Core.cRefs == 1);
3893	rtFsIsoDirShrd_Release(pThis->pRootDir);
3894	pThis->pRootDir = NULL;
3895	}
3896
3897	RTVfsFileRelease(pThis->hVfsBacking);
3898	pThis->hVfsBacking = NIL_RTVFSFILE;
3899
3900	return VINF_SUCCESS;
3901	}
3902
3903
3904	/**
3905	* @interface_method_impl{RTVFSOBJOPS::Obj,pfnQueryInfo}
3906	*/
3907	static DECLCALLBACK(int) rtFsIsoVol_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
3908	{
3909	RT_NOREF(pvThis, pObjInfo, enmAddAttr);
3910	return VERR_WRONG_TYPE;
3911	}
3912
3913
3914	/**
3915	* @interface_method_impl{RTVFSOPS,pfnOpenRoot}
3916	*/
3917	static DECLCALLBACK(int) rtFsIsoVol_OpenRoot(void *pvThis, PRTVFSDIR phVfsDir)
3918	{
3919	PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis;
3920
3921	rtFsIsoDirShrd_Retain(pThis->pRootDir); /* consumed by the next call */
3922	return rtFsIsoDir_NewWithShared(pThis, pThis->pRootDir, phVfsDir);
3923	}
3924
3925
3926	/**
3927	* @interface_method_impl{RTVFSOPS,pfnQueryRangeState}
3928	*/
3929	static DECLCALLBACK(int) rtFsIsoVol_QueryRangeState(void pvThis, uint64_t off, size_t cb, bool pfUsed)
3930	{
3931	RT_NOREF(pvThis, off, cb, pfUsed);
3932	return VERR_NOT_IMPLEMENTED;
3933	}
3934
3935
3936	DECL_HIDDEN_CONST(const RTVFSOPS) g_rtFsIsoVolOps =
3937	{
3938	{ /* Obj */
3939	RTVFSOBJOPS_VERSION,
3940	RTVFSOBJTYPE_VFS,
3941	"ISO 9660/UDF",
3942	rtFsIsoVol_Close,
3943	rtFsIsoVol_QueryInfo,
3944	RTVFSOBJOPS_VERSION
3945	},
3946	RTVFSOPS_VERSION,
3947	0 /* fFeatures */,
3948	rtFsIsoVol_OpenRoot,
3949	rtFsIsoVol_QueryRangeState,
3950	RTVFSOPS_VERSION
3951	};
3952
3953
3954	/**
3955	* Checks the descriptor tag and CRC.
3956	*
3957	* @retval IPRT status code.
3958	* @retval VERR_ISOFS_TAG_IS_ALL_ZEROS
3959	* @retval VERR_MISMATCH
3960	* @retval VERR_ISOFS_UNSUPPORTED_TAG_VERSION
3961	* @retval VERR_ISOFS_TAG_SECTOR_MISMATCH
3962	* @retval VERR_ISOFS_BAD_TAG_CHECKSUM
3963	*
3964	* @param pTag The tag to check.
3965	* @param idTag The expected descriptor tag ID, UINT16_MAX matches any
3966	* tag ID.
3967	* @param offTag The sector offset of the tag.
3968	* @param pErrInfo Where to return extended error info.
3969	*/
3970	static int rtFsIsoVolValidateUdfDescTag(PCUDFTAG pTag, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo)
3971	{
3972	/*
3973	* Checksum the tag first.
3974	*/
3975	const uint8_t pbTag = (const uint8_t )pTag;
3976	uint8_t const bChecksum = pbTag[0]
3977	+ pbTag[1]
3978	+ pbTag[2]
3979	+ pbTag[3]
3980	+ pbTag[5] /* skipping byte 4 as that's the checksum. */
3981	+ pbTag[6]
3982	+ pbTag[7]
3983	+ pbTag[8]
3984	+ pbTag[9]
3985	+ pbTag[10]
3986	+ pbTag[11]
3987	+ pbTag[12]
3988	+ pbTag[13]
3989	+ pbTag[14]
3990	+ pbTag[15];
3991	if (pTag->uChecksum == bChecksum)
3992	{
3993	/*
3994	* Do the matching.
3995	*/
3996	if ( pTag->uVersion == 3
3997	\|\| pTag->uVersion == 2)
3998	{
3999	if ( pTag->idTag == idTag
4000	\|\| idTag == UINT16_MAX)
4001	{
4002	if (pTag->offTag == offTag)
4003	{
4004	//Log3(("ISO/UDF: Valid descriptor %#06x at %#010RX32; cbDescriptorCrc=%#06RX32 uTagSerialNo=%#x\n",
4005	// pTag->idTag, offTag, pTag->cbDescriptorCrc, pTag->uTagSerialNo));
4006	return VINF_SUCCESS;
4007	}
4008
4009	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Sector mismatch: %#RX32 (%.*Rhxs)\n",
4010	idTag, offTag, pTag->offTag, sizeof(*pTag), pTag));
4011	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TAG_SECTOR_MISMATCH,
4012	"Descriptor tag sector number mismatch: %#x, expected %#x (%.*Rhxs)",
4013	pTag->offTag, offTag, sizeof(*pTag), pTag);
4014	}
4015	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Tag ID mismatch: %#x (%.*Rhxs)\n",
4016	idTag, offTag, pTag->idTag, sizeof(*pTag), pTag));
4017	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_MISMATCH, "Descriptor tag ID mismatch: %#x, expected %#x (%.*Rhxs)",
4018	pTag->idTag, idTag, sizeof(*pTag), pTag);
4019	}
4020	if (ASMMemIsZero(pTag, sizeof(*pTag)))
4021	{
4022	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): All zeros\n", idTag, offTag));
4023	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TAG_IS_ALL_ZEROS, "Descriptor is all zeros");
4024	}
4025
4026	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Unsupported version: %#x (%.*Rhxs)\n",
4027	idTag, offTag, pTag->uVersion, sizeof(*pTag), pTag));
4028	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNSUPPORTED_TAG_VERSION, "Unsupported descriptor tag version: %#x, expected 2 or 3 (%.*Rhxs)",
4029	pTag->uVersion, sizeof(*pTag), pTag);
4030	}
4031	Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): checksum error: %#x, calc %#x (%.*Rhxs)\n",
4032	idTag, offTag, pTag->uChecksum, bChecksum, sizeof(*pTag), pTag));
4033	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_TAG_CHECKSUM,
4034	"Descriptor tag checksum error: %#x, calculated %#x (%.*Rhxs)",
4035	pTag->uChecksum, bChecksum, sizeof(*pTag), pTag);
4036	}
4037
4038
4039	/**
4040	* Checks the descriptor CRC.
4041	*
4042	* @retval VINF_SUCCESS
4043	* @retval VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC
4044	* @retval VERR_ISOFS_DESC_CRC_MISMATCH
4045	*
4046	* @param pTag The descriptor buffer to checksum.
4047	* @param cbDesc The size of the descriptor buffer.
4048	* @param pErrInfo Where to return extended error info.
4049	*/
4050	static int rtFsIsoVolValidateUdfDescCrc(PCUDFTAG pTag, size_t cbDesc, PRTERRINFO pErrInfo)
4051	{
4052	if (pTag->cbDescriptorCrc + sizeof(*pTag) <= cbDesc)
4053	{
4054	uint16_t uCrc = RTCrc16Ccitt(pTag + 1, pTag->cbDescriptorCrc);
4055	if (pTag->uDescriptorCrc == uCrc)
4056	return VINF_SUCCESS;
4057
4058	Log(("rtFsIsoVolValidateUdfDescCrc(,%#x,%#010RX32,): Descriptor CRC mismatch: expected %#x, calculated %#x (cbDescriptorCrc=%#x)\n",
4059	pTag->idTag, pTag->offTag, pTag->uDescriptorCrc, uCrc, pTag->cbDescriptorCrc));
4060	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_DESC_CRC_MISMATCH,
4061	"Descriptor CRC mismatch: exepcted %#x, calculated %#x (cbDescriptor=%#x, idTag=%#x, offTag=%#010RX32)",
4062	pTag->uDescriptorCrc, uCrc, pTag->cbDescriptorCrc, pTag->idTag, pTag->offTag);
4063	}
4064
4065	Log(("rtFsIsoVolValidateUdfDescCrc(,%#x,%#010RX32,): Insufficient data to CRC: cbDescriptorCrc=%#x cbDesc=%#zx\n",
4066	pTag->idTag, pTag->offTag, pTag->cbDescriptorCrc, cbDesc));
4067	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC,
4068	"Insufficient data to CRC: cbDescriptorCrc=%#x cbDesc=%#zx (idTag=%#x, offTag=%#010RX32)",
4069	pTag->cbDescriptorCrc, cbDesc, pTag->idTag, pTag->offTag);
4070	}
4071
4072
4073	/**
4074	* Checks the descriptor tag and CRC.
4075	*
4076	* @retval VINF_SUCCESS
4077	* @retval VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC
4078	* @retval VERR_ISOFS_TAG_IS_ALL_ZEROS
4079	* @retval VERR_MISMATCH
4080	* @retval VERR_ISOFS_UNSUPPORTED_TAG_VERSION
4081	* @retval VERR_ISOFS_TAG_SECTOR_MISMATCH
4082	* @retval VERR_ISOFS_BAD_TAG_CHECKSUM
4083	* @retval VERR_ISOFS_DESC_CRC_MISMATCH
4084	*
4085	* @param pTag The descriptor buffer to check the tag of and to
4086	* checksum.
4087	* @param cbDesc The size of the descriptor buffer.
4088	* @param idTag The expected descriptor tag ID, UINT16_MAX
4089	* matches any tag ID.
4090	* @param offTag The sector offset of the tag.
4091	* @param pErrInfo Where to return extended error info.
4092	*/
4093	static int rtFsIsoVolValidateUdfDescTagAndCrc(PCUDFTAG pTag, size_t cbDesc, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo)
4094	{
4095	int rc = rtFsIsoVolValidateUdfDescTag(pTag, idTag, offTag, pErrInfo);
4096	if (RT_SUCCESS(rc))
4097	rc = rtFsIsoVolValidateUdfDescCrc(pTag, cbDesc, pErrInfo);
4098	return rc;
4099	}
4100
4101
4102
4103
4104	static int rtFsIsoVolProcessUdfFileSetDescs(PRTFSISOVOL pThis, uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo)
4105	{
4106
4107	/*
4108	* We assume there is a single file descriptor and don't bother checking what comes next.
4109	*/
4110	PUDFFILESETDESC pFsd = (PUDFFILESETDESC)pbBuf;
4111	Assert(cbBuf > sizeof(*pFsd)); NOREF(cbBuf);
4112	RT_ZERO(*pFsd);
4113	size_t cbToRead = RT_MAX(pThis->Udf.VolInfo.FileSetDescriptor.cb, sizeof(*pFsd));
4114	int rc = rtFsIsoVolUdfVpRead(pThis, pThis->Udf.VolInfo.FileSetDescriptor.Location.uPartitionNo,
4115	pThis->Udf.VolInfo.FileSetDescriptor.Location.off, 0, pFsd, cbToRead);
4116	if (RT_SUCCESS(rc))
4117	{
4118	rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pFsd->Tag, cbToRead, UDF_TAG_ID_FILE_SET_DESC,
4119	pThis->Udf.VolInfo.FileSetDescriptor.Location.off, pErrInfo);
4120	if (RT_SUCCESS(rc))
4121	{
4122	#ifdef LOG_ENABLED
4123	Log(("ISO/UDF: File set descriptor at %#RX32 (%#RX32:%#RX32)\n", pFsd->Tag.offTag,
4124	pThis->Udf.VolInfo.FileSetDescriptor.Location.uPartitionNo,
4125	pThis->Udf.VolInfo.FileSetDescriptor.Location.off));
4126	if (LogIs2Enabled())
4127	{
4128	UDF_LOG2_MEMBER_TIMESTAMP(pFsd, RecordingTimestamp);
4129	UDF_LOG2_MEMBER(pFsd, "#06RX16", uInterchangeLevel);
4130	UDF_LOG2_MEMBER(pFsd, "#06RX16", uMaxInterchangeLevel);
4131	UDF_LOG2_MEMBER(pFsd, "#010RX32", fCharacterSets);
4132	UDF_LOG2_MEMBER(pFsd, "#010RX32", fMaxCharacterSets);
4133	UDF_LOG2_MEMBER(pFsd, "#010RX32", uFileSetNo);
4134	UDF_LOG2_MEMBER(pFsd, "#010RX32", uFileSetDescNo);
4135	UDF_LOG2_MEMBER_CHARSPEC(pFsd, LogicalVolumeIDCharSet);
4136	UDF_LOG2_MEMBER_DSTRING(pFsd, achLogicalVolumeID);
4137	UDF_LOG2_MEMBER_CHARSPEC(pFsd, FileSetCharSet);
4138	UDF_LOG2_MEMBER_DSTRING(pFsd, achFileSetID);
4139	UDF_LOG2_MEMBER_DSTRING(pFsd, achCopyrightFile);
4140	UDF_LOG2_MEMBER_DSTRING(pFsd, achAbstractFile);
4141	UDF_LOG2_MEMBER_LONGAD(pFsd, RootDirIcb);
4142	UDF_LOG2_MEMBER_ENTITY_ID(pFsd, idDomain);
4143	UDF_LOG2_MEMBER_LONGAD(pFsd, NextExtent);
4144	UDF_LOG2_MEMBER_LONGAD(pFsd, SystemStreamDirIcb);
4145	if (!ASMMemIsZero(&pFsd->abReserved[0], sizeof(pFsd->abReserved)))
4146	UDF_LOG2_MEMBER(pFsd, ".32Rhxs", abReserved);
4147	}
4148	#endif
4149
4150	/*
4151	* Do some basic sanity checking.
4152	*/
4153	if (!UDF_IS_CHAR_SET_OSTA(&pFsd->FileSetCharSet))
4154	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_UNSUPPORTED_CHAR_SET,
4155	"Invalid file set charset %.64Rhxs", &pFsd->FileSetCharSet);
4156	if ( pFsd->RootDirIcb.cb == 0
4157	\|\| pFsd->RootDirIcb.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
4158	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_ZERO_ROOT_DIR,
4159	"Root Dir ICB location is zero or malformed: uType=%#x cb=%#x loc=%#x:%#RX32",
4160	pFsd->RootDirIcb.uType, pFsd->RootDirIcb.cb,
4161	pFsd->RootDirIcb.Location.uPartitionNo, pFsd->RootDirIcb.Location.off);
4162	if ( pFsd->NextExtent.cb != 0
4163	&& pFsd->NextExtent.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
4164	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_NEXT_EXTENT,
4165	"NextExtent isn't zero: uType=%#x cb=%#x loc=%#x:%#RX32",
4166	pFsd->NextExtent.uType, pFsd->NextExtent.cb,
4167	pFsd->NextExtent.Location.uPartitionNo, pFsd->NextExtent.Location.off);
4168
4169	/*
4170	* Copy the information we need.
4171	*/
4172	pThis->Udf.VolInfo.RootDirIcb = pFsd->RootDirIcb;
4173	if ( pFsd->SystemStreamDirIcb.cb > 0
4174	&& pFsd->SystemStreamDirIcb.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED)
4175	pThis->Udf.VolInfo.SystemStreamDirIcb = pFsd->SystemStreamDirIcb;
4176	else
4177	RT_ZERO(pThis->Udf.VolInfo.SystemStreamDirIcb);
4178	return VINF_SUCCESS;
4179	}
4180	return rc;
4181	}
4182	return RTERRINFO_LOG_SET(pErrInfo, rc, "Error reading file set descriptor");
4183	}
4184
4185
4186	/**
4187	* Check validatity and extract information from the descriptors in the VDS seq.
4188	*
4189	* @returns IPRT status code
4190	* @param pThis The instance.
4191	* @param pInfo The VDS sequence info.
4192	* @param pErrInfo Where to return extended error info.
4193	*/
4194	static int rtFsIsoVolProcessUdfVdsSeqInfo(PRTFSISOVOL pThis, PRTFSISOVDSINFO pInfo, PRTERRINFO pErrInfo)
4195	{
4196	/*
4197	* Check the basic descriptor counts.
4198	*/
4199	PUDFPRIMARYVOLUMEDESC pPvd;
4200	if (pInfo->cPrimaryVols == 1)
4201	pPvd = pInfo->apPrimaryVols[0];
4202	else
4203	{
4204	if (pInfo->cPrimaryVols == 0)
4205	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_PVD, "No primary volume descriptor was found");
4206	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MULTIPLE_PVDS,
4207	"More than one primary volume descriptor was found: %u", pInfo->cPrimaryVols);
4208	}
4209
4210	PUDFLOGICALVOLUMEDESC pLvd;
4211	if (pInfo->cLogicalVols == 1)
4212	pLvd = pInfo->apLogicalVols[0];
4213	else
4214	{
4215	if (pInfo->cLogicalVols == 0)
4216	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_LVD, "No logical volume descriptor was found");
4217	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MULTIPLE_LVDS,
4218	"More than one logical volume descriptor was found: %u", pInfo->cLogicalVols);
4219	}
4220
4221	#if 0
4222	if (pInfo->cPartitions == 0)
4223	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_PD, "No partition descriptors was found");
4224	#endif
4225
4226	/*
4227	* Check out the partition map in the logical volume descriptor.
4228	* Produce the mapping table while going about that.
4229	*/
4230	if (pLvd->cPartitionMaps > 64)
4231	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TOO_MANY_PART_MAPS,
4232	"Too many partition maps: %u (max 64)", pLvd->cPartitionMaps);
4233
4234	PRTFSISOVOLUDFPMAP paPartMaps = NULL;
4235	if (pLvd->cPartitionMaps > 0)
4236	{
4237	pInfo->paPartMaps = paPartMaps = (PRTFSISOVOLUDFPMAP)RTMemAllocZ(sizeof(paPartMaps[0]) * pLvd->cPartitionMaps);
4238	if (!paPartMaps)
4239	return VERR_NO_MEMORY;
4240	}
4241	uint32_t cPartMaps = 0;
4242
4243	if (pLvd->cbMapTable)
4244	{
4245	uint32_t off = 0;
4246	while (off + sizeof(UDFPARTMAPHDR) <= pLvd->cbMapTable)
4247	{
4248	PCUDFPARTMAPHDR pHdr = (PCUDFPARTMAPHDR)&pLvd->abPartitionMaps[off];
4249
4250	/*
4251	* Bounds checking.
4252	*/
4253	if (off + pHdr->cb > pLvd->cbMapTable)
4254	{
4255	if (cPartMaps < pLvd->cbMapTable)
4256	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MALFORMED_PART_MAP_TABLE,
4257	"Incomplete partition map entry at offset %#x: cb=%#x -> offEnd=%#x cbMapTable=%#x (type=%#x)",
4258	off, pHdr->cb, off + pHdr->cb, pLvd->cbMapTable, pHdr->bType);
4259	LogRel(("ISO/UDF: Warning: Incomplete partition map entry at offset %#x: cb=%#x -> offEnd=%#x cbMapTable=%#x (type=%#x)\n",
4260	off, pHdr->cb, off + pHdr->cb, pLvd->cbMapTable, pHdr->bType));
4261	break;
4262	}
4263	if (cPartMaps >= pLvd->cPartitionMaps)
4264	{
4265	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",
4266	cPartMaps - pLvd->cPartitionMaps, off, pHdr->cb, pLvd->cbMapTable, pHdr->bType));
4267	break;
4268	}
4269
4270	/*
4271	* Extract relevant info out of the entry.
4272	*/
4273	paPartMaps[cPartMaps].offMapTable = (uint16_t)off;
4274	uint16_t uPartitionNo;
4275	if (pHdr->bType == 1)
4276	{
4277	PCUDFPARTMAPTYPE1 pType1 = (PCUDFPARTMAPTYPE1)pHdr;
4278	paPartMaps[cPartMaps].uVolumeSeqNo = pType1->uVolumeSeqNo;
4279	paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_PLAIN;
4280	uPartitionNo = pType1->uPartitionNo;
4281	}
4282	else if (pHdr->bType == 2)
4283	{
4284	PCUDFPARTMAPTYPE2 pType2 = (PCUDFPARTMAPTYPE2)pHdr;
4285	if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_VPM_PARTITION_TYPE))
4286	{
4287	paPartMaps[cPartMaps].bType = pType2->idPartitionType.Suffix.Udf.uUdfRevision >= 0x200
4288	? RTFSISO_UDF_PMAP_T_VPM_20 : RTFSISO_UDF_PMAP_T_VPM_15;
4289	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_VPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported",
4290	pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision);
4291	}
4292	else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_SPM_PARTITION_TYPE))
4293	{
4294	paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_SPM;
4295	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_SPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported",
4296	pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision);
4297	}
4298	else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_MPM_PARTITION_TYPE))
4299	{
4300	paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_MPM;
4301	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported",
4302	pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision);
4303	}
4304	else
4305	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNKNOWN_PART_MAP_TYPE_ID,
4306	"Unknown partition map ID for #%u @ %#x: %.23s",
4307	cPartMaps, off, pType2->idPartitionType.achIdentifier);
4308	#if 0 /* unreachable code */
4309	paPartMaps[cPartMaps].uVolumeSeqNo = pType2->uVolumeSeqNo;
4310	uPartitionNo = pType2->uPartitionNo;
4311	#endif
4312	}
4313	else
4314	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNKNOWN_PART_MAP_ENTRY_TYPE,
4315	"Unknown partition map entry type #%u @ %#x: %u", cPartMaps, off, pHdr->bType);
4316	paPartMaps[cPartMaps].uPartitionNo = uPartitionNo;
4317
4318	/*
4319	* Lookup the partition number and retrieve the relevant info from the partition descriptor.
4320	*/
4321	uint32_t i = pInfo->cPartitions;
4322	while (i-- > 0)
4323	{
4324	PUDFPARTITIONDESC pPd = pInfo->apPartitions[i];
4325	if (paPartMaps[cPartMaps].uPartitionNo == pPd->uPartitionNo)
4326	{
4327	paPartMaps[cPartMaps].idxPartDesc = (uint16_t)i;
4328	paPartMaps[cPartMaps].cSectors = pPd->cSectors;
4329	paPartMaps[cPartMaps].offLocation = pPd->offLocation;
4330	paPartMaps[cPartMaps].offByteLocation = (uint64_t)pPd->offLocation * pThis->cbSector;
4331	paPartMaps[cPartMaps].fFlags = pPd->fFlags;
4332	paPartMaps[cPartMaps].uAccessType = pPd->uAccessType;
4333	if (!UDF_ENTITY_ID_EQUALS(&pPd->PartitionContents, UDF_ENTITY_ID_PD_PARTITION_CONTENTS_UDF))
4334	paPartMaps[cPartMaps].fHaveHdr = false;
4335	else
4336	{
4337	paPartMaps[cPartMaps].fHaveHdr = true;
4338	paPartMaps[cPartMaps].Hdr = pPd->ContentsUse.Hdr;
4339	}
4340	break;
4341	}
4342	}
4343	if (i > pInfo->cPartitions)
4344	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_PARTITION_NOT_FOUND,
4345	"Partition #%u (%#x) specified by mapping entry #%u (@ %#x) was not found! (int-type %u)",
4346	uPartitionNo, uPartitionNo, cPartMaps, off, paPartMaps[cPartMaps].bType);
4347
4348	/*
4349	* Advance.
4350	*/
4351	cPartMaps++;
4352	off += pHdr->cb;
4353	}
4354
4355	if (cPartMaps < pLvd->cPartitionMaps)
4356	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_INCOMPLETE_PART_MAP_TABLE,
4357	"Only found %u of the %u announced partition mapping table entries",
4358	cPartMaps, pLvd->cPartitionMaps);
4359	}
4360
4361	/* It might be theoretically possible to not use virtual partitions for
4362	accessing data, so just warn if there aren't any. */
4363	if (cPartMaps == 0)
4364	LogRel(("ISO/UDF: Warning: No partition maps!\n"));
4365
4366	/*
4367	* Check out the logical volume descriptor.
4368	*/
4369	if ( pLvd->cbLogicalBlock < pThis->cbSector
4370	\|\| pLvd->cbLogicalBlock > RTFSISO_MAX_LOGICAL_BLOCK_SIZE
4371	\|\| (pLvd->cbLogicalBlock % pThis->cbSector) != 0)
4372	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNSUPPORTED_LOGICAL_BLOCK_SIZE,
4373	"Logical block size of %#x is not supported with a sector size of %#x",
4374	pLvd->cbLogicalBlock, pThis->cbSector);
4375
4376	if (!UDF_ENTITY_ID_EQUALS(&pLvd->idDomain, UDF_ENTITY_ID_LVD_DOMAIN))
4377	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_DOMAIN_ID,
4378	"Unsupported domain ID in logical volume descriptor: '%.23s'", pLvd->idDomain.achIdentifier);
4379
4380	if ( pLvd->ContentsUse.FileSetDescriptor.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED
4381	\|\| pLvd->ContentsUse.FileSetDescriptor.cb == 0
4382	\|\| pLvd->ContentsUse.FileSetDescriptor.Location.uPartitionNo >= cPartMaps)
4383	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_FILE_SET_DESC_LOCATION,
4384	"Malformed file set descriptor location (type=%u cb=%#x part=%#x)",
4385	pLvd->ContentsUse.FileSetDescriptor.uType,
4386	pLvd->ContentsUse.FileSetDescriptor.cb,
4387	pLvd->ContentsUse.FileSetDescriptor.Location.uPartitionNo);
4388
4389	bool fLvdHaveVolId = !ASMMemIsZero(pLvd->achLogicalVolumeID, sizeof(pLvd->achLogicalVolumeID));
4390	if ( fLvdHaveVolId
4391	&& !UDF_IS_CHAR_SET_OSTA(&pLvd->DescCharSet))
4392	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_DESC_CHAR_SET,
4393	"Logical volume ID is not using OSTA compressed unicode");
4394
4395	/*
4396	* We can ignore much, if not all of the primary volume descriptor.
4397	*/
4398
4399	/*
4400	* We're good. So copy over the data.
4401	*/
4402	pThis->Udf.VolInfo.FileSetDescriptor = pLvd->ContentsUse.FileSetDescriptor;
4403	pThis->Udf.VolInfo.cbBlock = pLvd->cbLogicalBlock;
4404	pThis->Udf.VolInfo.cShiftBlock = 9;
4405	while (pThis->Udf.VolInfo.cbBlock != RT_BIT_32(pThis->Udf.VolInfo.cShiftBlock))
4406	pThis->Udf.VolInfo.cShiftBlock++;
4407	pThis->Udf.VolInfo.fFlags = pPvd->fFlags;
4408	pThis->Udf.VolInfo.cPartitions = cPartMaps;
4409	pThis->Udf.VolInfo.paPartitions = paPartMaps;
4410	pInfo->paPartMaps = NULL;
4411	if (fLvdHaveVolId)
4412	memcpy(pThis->Udf.VolInfo.achLogicalVolumeID, pLvd->achLogicalVolumeID, sizeof(pThis->Udf.VolInfo.achLogicalVolumeID));
4413	else
4414	RT_ZERO(pThis->Udf.VolInfo.achLogicalVolumeID);
4415
4416	return VINF_SUCCESS;
4417	}
4418
4419
4420	/**
4421	* Processes a primary volume descriptor in the VDS (UDF).
4422	*
4423	* @returns IPRT status code.
4424	* @param pInfo Where we gather descriptor information.
4425	* @param pDesc The descriptor.
4426	* @param pErrInfo Where to return extended error information.
4427	*/
4428	//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
4429	static int rtFsIsoVolProcessUdfPrimaryVolDesc(PRTFSISOVDSINFO pInfo, PCUDFPRIMARYVOLUMEDESC pDesc, PRTERRINFO pErrInfo)
4430	{
4431	#ifdef LOG_ENABLED
4432	Log(("ISO/UDF: Primary volume descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4433	if (LogIs2Enabled())
4434	{
4435	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4436	UDF_LOG2_MEMBER(pDesc, "#010RX32", uPrimaryVolumeDescNo);
4437	UDF_LOG2_MEMBER_DSTRING(pDesc, achVolumeID);
4438	UDF_LOG2_MEMBER(pDesc, "#06RX16", uVolumeSeqNo);
4439	UDF_LOG2_MEMBER(pDesc, "#06RX16", uVolumeSeqNo);
4440	UDF_LOG2_MEMBER(pDesc, "#06RX16", uMaxVolumeSeqNo);
4441	UDF_LOG2_MEMBER(pDesc, "#06RX16", uInterchangeLevel);
4442	UDF_LOG2_MEMBER(pDesc, "#06RX16", uMaxInterchangeLevel);
4443	UDF_LOG2_MEMBER(pDesc, "#010RX32", fCharacterSets);
4444	UDF_LOG2_MEMBER(pDesc, "#010RX32", fMaxCharacterSets);
4445	UDF_LOG2_MEMBER_DSTRING(pDesc, achVolumeSetID);
4446	UDF_LOG2_MEMBER_CHARSPEC(pDesc, DescCharSet);
4447	UDF_LOG2_MEMBER_CHARSPEC(pDesc, ExplanatoryCharSet);
4448	UDF_LOG2_MEMBER_EXTENTAD(pDesc, VolumeAbstract);
4449	UDF_LOG2_MEMBER_EXTENTAD(pDesc, VolumeCopyrightNotice);
4450	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idApplication);
4451	UDF_LOG2_MEMBER_TIMESTAMP(pDesc, RecordingTimestamp);
4452	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4453	if (!ASMMemIsZero(&pDesc->abImplementationUse, sizeof(pDesc->abImplementationUse)))
4454	Log2(("ISO/UDF: %-32s %.64Rhxs\n", "abReserved[64]:", &pDesc->abImplementationUse[0]));
4455	UDF_LOG2_MEMBER(pDesc, "#010RX32", offPredecessorVolDescSeq);
4456	UDF_LOG2_MEMBER(pDesc, "#06RX16", fFlags);
4457	if (!ASMMemIsZero(&pDesc->abReserved, sizeof(pDesc->abReserved)))
4458	Log2(("ISO/UDF: %-32s %.22Rhxs\n", "abReserved[22]:", &pDesc->abReserved[0]));
4459	}
4460	#endif
4461
4462	/*
4463	* Check if this is a new revision of an existing primary volume descriptor.
4464	*/
4465	PUDFPRIMARYVOLUMEDESC pEndianConvert = NULL;
4466	uint32_t i = pInfo->cPrimaryVols;
4467	while (i--> 0)
4468	{
4469	if ( memcmp(pDesc->achVolumeID, pInfo->apPrimaryVols[i]->achVolumeID, sizeof(pDesc->achVolumeID)) == 0
4470	&& memcmp(&pDesc->DescCharSet, &pInfo->apPrimaryVols[i]->DescCharSet, sizeof(pDesc->DescCharSet)) == 0)
4471	{
4472	if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apPrimaryVols[i]->uVolumeDescSeqNo)
4473	{
4474	Log(("ISO/UDF: Primary descriptor prevails over previous! (%u >= %u)\n",
4475	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4476	pEndianConvert = pInfo->apPrimaryVols[i];
4477	memcpy(pEndianConvert, pDesc, sizeof(*pDesc));
4478	}
4479	else
4480	Log(("ISO/UDF: Primary descriptor has lower sequence number than the previous! (%u < %u)\n",
4481	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4482	break;
4483	}
4484	}
4485	if (i >= pInfo->cPrimaryVols)
4486	{
4487	/*
4488	* It wasn't. Append it.
4489	*/
4490	i = pInfo->cPrimaryVols;
4491	if (i < RT_ELEMENTS(pInfo->apPrimaryVols))
4492	{
4493	pInfo->apPrimaryVols[i] = pEndianConvert = (PUDFPRIMARYVOLUMEDESC)RTMemDup(pDesc, sizeof(*pDesc));
4494	if (pEndianConvert)
4495	pInfo->cPrimaryVols = i + 1;
4496	else
4497	return VERR_NO_MEMORY;
4498	Log2(("ISO/UDF: ++New primary descriptor.\n"));
4499	}
4500	else
4501	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_PVDS, "Encountered too many primary volume descriptors");
4502	}
4503
4504	#ifdef RT_BIG_ENDIAN
4505	/*
4506	* Do endian conversion of the descriptor.
4507	*/
4508	if (pEndianConvert)
4509	{
4510	AssertFailed();
4511	}
4512	#else
4513	RT_NOREF(pEndianConvert);
4514	#endif
4515	return VINF_SUCCESS;
4516	}
4517
4518
4519	/**
4520	* Processes an logical volume descriptor in the VDS (UDF).
4521	*
4522	* @returns IPRT status code.
4523	* @param pInfo Where we gather descriptor information.
4524	* @param pDesc The descriptor.
4525	* @param cbSector The sector size (UDF defines the logical and physical
4526	* sector size to be the same).
4527	* @param pErrInfo Where to return extended error information.
4528	*/
4529	static int rtFsIsoVolProcessUdfLogicalVolumeDesc(PRTFSISOVDSINFO pInfo, PCUDFLOGICALVOLUMEDESC pDesc,
4530	uint32_t cbSector, PRTERRINFO pErrInfo)
4531	{
4532	#ifdef LOG_ENABLED
4533	Log(("ISO/UDF: Logical volume descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4534	if (LogIs2Enabled())
4535	{
4536	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4537	UDF_LOG2_MEMBER_CHARSPEC(pDesc, DescCharSet);
4538	UDF_LOG2_MEMBER_DSTRING(pDesc, achLogicalVolumeID);
4539	UDF_LOG2_MEMBER(pDesc, "#010RX32", cbLogicalBlock);
4540	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idDomain);
4541	if (UDF_ENTITY_ID_EQUALS(&pDesc->idDomain, UDF_ENTITY_ID_LVD_DOMAIN))
4542	UDF_LOG2_MEMBER_LONGAD(pDesc, ContentsUse.FileSetDescriptor);
4543	else if (!ASMMemIsZero(&pDesc->ContentsUse.ab[0], sizeof(pDesc->ContentsUse.ab)))
4544	Log2(("ISO/UDF: %-32s %.16Rhxs\n", "ContentsUse.ab[16]:", &pDesc->ContentsUse.ab[0]));
4545	UDF_LOG2_MEMBER(pDesc, "#010RX32", cbMapTable);
4546	UDF_LOG2_MEMBER(pDesc, "#010RX32", cPartitionMaps);
4547	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4548	if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab)))
4549	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ImplementationUse.ab[128]:", &pDesc->ImplementationUse.ab[0]));
4550	UDF_LOG2_MEMBER_EXTENTAD(pDesc, IntegritySeqExtent);
4551	if (pDesc->cbMapTable)
4552	{
4553	Log2(("ISO/UDF: %-32s\n", "abPartitionMaps"));
4554	uint32_t iMap = 0;
4555	uint32_t off = 0;
4556	while (off + sizeof(UDFPARTMAPHDR) <= pDesc->cbMapTable)
4557	{
4558	PCUDFPARTMAPHDR pHdr = (PCUDFPARTMAPHDR)&pDesc->abPartitionMaps[off];
4559	Log2(("ISO/UDF: %02u @ %#05x: type %u, length %u\n", iMap, off, pHdr->bType, pHdr->cb));
4560	if (off + pHdr->cb > pDesc->cbMapTable)
4561	{
4562	Log2(("ISO/UDF: BAD! Entry is %d bytes too long!\n", off + pHdr->cb - pDesc->cbMapTable));
4563	break;
4564	}
4565	if (pHdr->bType == 1)
4566	{
4567	PCUDFPARTMAPTYPE1 pType1 = (PCUDFPARTMAPTYPE1)pHdr;
4568	UDF_LOG2_MEMBER_EX(pType1, "#06RX16", uVolumeSeqNo, 5);
4569	UDF_LOG2_MEMBER_EX(pType1, "#06RX16", uPartitionNo, 5);
4570	}
4571	else if (pHdr->bType == 2)
4572	{
4573	PCUDFPARTMAPTYPE2 pType2 = (PCUDFPARTMAPTYPE2)pHdr;
4574	UDF_LOG2_MEMBER_ENTITY_ID_EX(pType2, idPartitionType, 5);
4575	UDF_LOG2_MEMBER_EX(pType2, "#06RX16", uVolumeSeqNo, 5);
4576	UDF_LOG2_MEMBER_EX(pType2, "#06RX16", uPartitionNo, 5);
4577	if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_SPM_PARTITION_TYPE))
4578	{
4579	UDF_LOG2_MEMBER_EX(&pType2->u, "#06RX16", Spm.cBlocksPerPacket, 5);
4580	UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Spm.cSparingTables, 5);
4581	if (pType2->u.Spm.bReserved2)
4582	UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Spm.bReserved2, 5);
4583	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.cbSparingTable, 5);
4584	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[0], 5);
4585	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[1], 5);
4586	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[2], 5);
4587	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[3], 5);
4588	}
4589	else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_MPM_PARTITION_TYPE))
4590	{
4591	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataFile, 5);
4592	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataMirrorFile, 5);
4593	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataBitmapFile, 5);
4594	UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.cBlocksAllocationUnit, 5);
4595	UDF_LOG2_MEMBER_EX(&pType2->u, "#06RX16", Mpm.cBlocksAlignmentUnit, 5);
4596	UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Mpm.fFlags, 5);
4597	if (!ASMMemIsZero(pType2->u.Mpm.abReserved2, sizeof(pType2->u.Mpm.abReserved2)))
4598	UDF_LOG2_MEMBER_EX(&pType2->u, ".5Rhxs", Mpm.abReserved2, 5);
4599	}
4600	}
4601	else
4602	Log2(("ISO/UDF: BAD! Unknown type!\n"));
4603
4604	/* advance */
4605	off += pHdr->cb;
4606	iMap++;
4607	}
4608	}
4609	}
4610	#endif
4611
4612	/*
4613	* Check if this is a newer revision of an existing primary volume descriptor.
4614	*/
4615	size_t cbDesc = (size_t)pDesc->cbMapTable + RT_UOFFSETOF(UDFLOGICALVOLUMEDESC, abPartitionMaps);
4616	if ( pDesc->cbMapTable >= (UINT32_MAX >> 1)
4617	\|\| cbDesc > cbSector)
4618	{
4619	Log(("ISO/UDF: Logical volume descriptor is too big: %#zx (cbSector=%#x)\n", cbDesc, cbSector));
4620	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TOO_BIT_PARTMAP_IN_LVD,
4621	"Logical volume descriptor is too big: %#zx (cbSector=%#x)\n", cbDesc, cbSector);
4622	}
4623
4624	PUDFLOGICALVOLUMEDESC pEndianConvert = NULL;
4625	uint32_t i = pInfo->cLogicalVols;
4626	while (i--> 0)
4627	if ( memcmp(pDesc->achLogicalVolumeID, pInfo->apLogicalVols[i]->achLogicalVolumeID,
4628	sizeof(pDesc->achLogicalVolumeID)) == 0
4629	&& memcmp(&pDesc->DescCharSet, &pInfo->apLogicalVols[i]->DescCharSet,
4630	sizeof(pDesc->DescCharSet)) == 0)
4631	{
4632	if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apLogicalVols[i]->uVolumeDescSeqNo)
4633	{
4634	Log(("ISO/UDF: Logical descriptor prevails over previous! (%u >= %u)\n",
4635	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apLogicalVols[i]->uVolumeDescSeqNo));
4636	pEndianConvert = (PUDFLOGICALVOLUMEDESC)RTMemDup(pDesc, cbDesc);
4637	if (!pEndianConvert)
4638	return VERR_NO_MEMORY;
4639	RTMemFree(pInfo->apLogicalVols[i]);
4640	pInfo->apLogicalVols[i] = pEndianConvert;
4641	}
4642	else
4643	Log(("ISO/UDF: Logical descriptor has lower sequence number than the previous! (%u >= %u)\n",
4644	RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apLogicalVols[i]->uVolumeDescSeqNo));
4645	break;
4646	}
4647	if (i >= pInfo->cLogicalVols)
4648	{
4649	/*
4650	* It wasn't. Append it.
4651	*/
4652	i = pInfo->cLogicalVols;
4653	if (i < RT_ELEMENTS(pInfo->apLogicalVols))
4654	{
4655	pInfo->apLogicalVols[i] = pEndianConvert = (PUDFLOGICALVOLUMEDESC)RTMemDup(pDesc, cbDesc);
4656	if (pEndianConvert)
4657	pInfo->cLogicalVols = i + 1;
4658	else
4659	return VERR_NO_MEMORY;
4660	Log2(("ISO/UDF: ++New logical volume descriptor.\n"));
4661	}
4662	else
4663	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_LVDS, "Too many logical volume descriptors");
4664	}
4665
4666	#ifdef RT_BIG_ENDIAN
4667	/*
4668	* Do endian conversion of the descriptor.
4669	*/
4670	if (pEndianConvert)
4671	{
4672	AssertFailed();
4673	}
4674	#else
4675	RT_NOREF(pEndianConvert);
4676	#endif
4677	return VINF_SUCCESS;
4678	}
4679
4680
4681	/**
4682	* Processes an partition descriptor in the VDS (UDF).
4683	*
4684	* @returns IPRT status code.
4685	* @param pInfo Where we gather descriptor information.
4686	* @param pDesc The descriptor.
4687	* @param pErrInfo Where to return extended error information.
4688	*/
4689	static int rtFsIsoVolProcessUdfPartitionDesc(PRTFSISOVDSINFO pInfo, PCUDFPARTITIONDESC pDesc, PRTERRINFO pErrInfo)
4690	{
4691	#ifdef LOG_ENABLED
4692	Log(("ISO/UDF: Partition descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4693	if (LogIs2Enabled())
4694	{
4695	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4696	UDF_LOG2_MEMBER(pDesc, "#06RX16", fFlags);
4697	UDF_LOG2_MEMBER(pDesc, "#06RX16", uPartitionNo);
4698	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, PartitionContents);
4699	if (UDF_ENTITY_ID_EQUALS(&pDesc->PartitionContents, UDF_ENTITY_ID_PD_PARTITION_CONTENTS_UDF))
4700	{
4701	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.UnallocatedSpaceTable);
4702	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.UnallocatedSpaceBitmap);
4703	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.PartitionIntegrityTable);
4704	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.FreedSpaceTable);
4705	UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.FreedSpaceBitmap);
4706	if (!ASMMemIsZero(&pDesc->ContentsUse.Hdr.abReserved[0], sizeof(pDesc->ContentsUse.Hdr.abReserved)))
4707	Log2(("ISO/UDF: %-32s\n%.88RhxD\n", "Hdr.abReserved[88]:", &pDesc->ContentsUse.Hdr.abReserved[0]));
4708	}
4709	else if (!ASMMemIsZero(&pDesc->ContentsUse.ab[0], sizeof(pDesc->ContentsUse.ab)))
4710	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ContentsUse.ab[128]:", &pDesc->ContentsUse.ab[0]));
4711	UDF_LOG2_MEMBER(pDesc, "#010RX32", uAccessType);
4712	UDF_LOG2_MEMBER(pDesc, "#010RX32", offLocation);
4713	UDF_LOG2_MEMBER(pDesc, "#010RX32", cSectors);
4714	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4715	if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab)))
4716	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ImplementationUse.ab[128]:", &pDesc->ImplementationUse.ab[0]));
4717
4718	if (!ASMMemIsZero(&pDesc->abReserved[0], sizeof(pDesc->abReserved)))
4719	Log2(("ISO/UDF: %-32s\n%.156RhxD\n", "ImplementationUse.ab[156]:", &pDesc->abReserved[0]));
4720	}
4721	#endif
4722
4723	/*
4724	* Check if this is a newer revision of an existing primary volume descriptor.
4725	*/
4726	PUDFPARTITIONDESC pEndianConvert = NULL;
4727	uint32_t i = pInfo->cPartitions;
4728	while (i--> 0)
4729	if (pDesc->uPartitionNo == pInfo->apPartitions[i]->uPartitionNo)
4730	{
4731	if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apPartitions[i]->uVolumeDescSeqNo)
4732	{
4733	Log(("ISO/UDF: Partition descriptor for part %#u prevails over previous! (%u >= %u)\n",
4734	pDesc->uPartitionNo, RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4735	pEndianConvert = pInfo->apPartitions[i];
4736	memcpy(pEndianConvert, pDesc, sizeof(*pDesc));
4737	}
4738	else
4739	Log(("ISO/UDF: Partition descriptor for part %#u has a lower sequence number than the previous! (%u < %u)\n",
4740	pDesc->uPartitionNo, RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo));
4741	break;
4742	}
4743	if (i >= pInfo->cPartitions)
4744	{
4745	/*
4746	* It wasn't. Append it.
4747	*/
4748	i = pInfo->cPartitions;
4749	if (i < RT_ELEMENTS(pInfo->apPartitions))
4750	{
4751	pInfo->apPartitions[i] = pEndianConvert = (PUDFPARTITIONDESC)RTMemDup(pDesc, sizeof(*pDesc));
4752	if (pEndianConvert)
4753	pInfo->cPartitions = i + 1;
4754	else
4755	return VERR_NO_MEMORY;
4756	Log2(("ISO/UDF: ++New partition descriptor.\n"));
4757	}
4758	else
4759	return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_PDS, "Too many physical volume descriptors");
4760	}
4761
4762	#ifdef RT_BIG_ENDIAN
4763	/*
4764	* Do endian conversion of the descriptor.
4765	*/
4766	if (pEndianConvert)
4767	{
4768	AssertFailed();
4769	}
4770	#else
4771	RT_NOREF(pEndianConvert);
4772	#endif
4773	return VINF_SUCCESS;
4774	}
4775
4776
4777	/**
4778	* Processes an implementation use descriptor in the VDS (UDF).
4779	*
4780	* @returns IPRT status code.
4781	* @param pInfo Where we gather descriptor information.
4782	* @param pDesc The descriptor.
4783	* @param pErrInfo Where to return extended error information.
4784	*/
4785	static int rtFsIsoVolProcessUdfImplUseVolDesc(PRTFSISOVDSINFO pInfo, PCUDFIMPLEMENTATIONUSEVOLUMEDESC pDesc, PRTERRINFO pErrInfo)
4786	{
4787	#ifdef LOG_ENABLED
4788	Log(("ISO/UDF: Implementation use volume descriptor at sector %#RX32\n", pDesc->Tag.offTag));
4789	if (LogIs2Enabled())
4790	{
4791	UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo);
4792	UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation);
4793	if (UDF_ENTITY_ID_EQUALS(&pDesc->idImplementation, UDF_ENTITY_ID_IUVD_IMPLEMENTATION))
4794	{
4795	UDF_LOG2_MEMBER_CHARSPEC(&pDesc->ImplementationUse, Lvi.Charset);
4796	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achVolumeID);
4797	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo1);
4798	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo2);
4799	UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo3);
4800	UDF_LOG2_MEMBER_ENTITY_ID(&pDesc->ImplementationUse, Lvi.idImplementation);
4801	if (!ASMMemIsZero(&pDesc->ImplementationUse.Lvi.abUse[0], sizeof(pDesc->ImplementationUse.Lvi.abUse)))
4802	Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "Lvi.abUse[128]:", &pDesc->ImplementationUse.Lvi.abUse[0]));
4803	}
4804	else if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab)))
4805	Log2(("ISO/UDF: %-32s\n%.460RhxD\n", "ImplementationUse.ab[460]:", &pDesc->ImplementationUse.ab[0]));
4806	}
4807	#endif
4808
4809	RT_NOREF(pInfo, pDesc, pErrInfo);
4810	return VINF_SUCCESS;
4811	}
4812
4813
4814
4815	typedef struct RTFSISOSEENSEQENCES
4816	{
4817	/** Number of sequences we've seen thus far. */
4818	uint32_t cSequences;
4819	/** The per sequence data. */
4820	struct
4821	{
4822	uint64_t off; /*< Byte offset of the sequence. /
4823	uint32_t cb; /*< Size of the sequence. /
4824	} aSequences[8];
4825	} RTFSISOSEENSEQENCES;
4826	typedef RTFSISOSEENSEQENCES *PRTFSISOSEENSEQENCES;
4827
4828
4829
4830	/**
4831	* Process a VDS sequence, recursively dealing with volume descriptor pointers.
4832	*
4833	* This function only gathers information from the sequence, handling the
4834	* prevailing descriptor fun.
4835	*
4836	* @returns IPRT status code.
4837	* @param pThis The instance.
4838	* @param pInfo Where to store info from the VDS sequence.
4839	* @param offSeq The byte offset of the sequence.
4840	* @param cbSeq The length of the sequence.
4841	* @param pbBuf Read buffer.
4842	* @param cbBuf Size of the read buffer. This is at least one
4843	* sector big.
4844	* @param cNestings The VDS nesting depth.
4845	* @param pErrInfo Where to return extended error info.
4846	*/
4847	static int rtFsIsoVolReadAndProcessUdfVdsSeq(PRTFSISOVOL pThis, PRTFSISOVDSINFO pInfo, uint64_t offSeq, uint32_t cbSeq,
4848	uint8_t *pbBuf, size_t cbBuf, uint32_t cNestings, PRTERRINFO pErrInfo)
4849	{
4850	AssertReturn(cbBuf >= pThis->cbSector, VERR_INTERNAL_ERROR);
4851
4852	/*
4853	* Check nesting depth.
4854	*/
4855	if (cNestings > 5)
4856	return RTERRINFO_LOG_SET(pErrInfo, VERR_TOO_MUCH_DATA, "The volume descriptor sequence (VDS) is nested too deeply.");
4857
4858
4859	/*
4860	* Do the processing sector by sector to keep things simple.
4861	*/
4862	uint32_t offInSeq = 0;
4863	while (offInSeq < cbSeq)
4864	{
4865	int rc;
4866
4867	/*
4868	* Read the next sector. Zero pad if less that a sector.
4869	*/
4870	Assert((offInSeq & (pThis->cbSector - 1)) == 0);
4871	rc = RTVfsFileReadAt(pThis->hVfsBacking, offSeq + offInSeq, pbBuf, pThis->cbSector, NULL);
4872	if (RT_FAILURE(rc))
4873	return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Error reading VDS content at %RX64 (LB %#x): %Rrc",
4874	offSeq + offInSeq, pThis->cbSector, rc);
4875	if (cbSeq - offInSeq < pThis->cbSector)
4876	memset(&pbBuf[cbSeq - offInSeq], 0, pThis->cbSector - (cbSeq - offInSeq));
4877
4878	/*
4879	* Check tag.
4880	*/
4881	PCUDFTAG pTag = (PCUDFTAG)pbBuf;
4882	rc = rtFsIsoVolValidateUdfDescTagAndCrc(pTag, pThis->cbSector, UINT16_MAX, (offSeq + offInSeq) / pThis->cbSector, pErrInfo);
4883	if ( RT_SUCCESS(rc)
4884	\|\| ( rc == VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC
4885	&& ( pTag->idTag == UDF_TAG_ID_LOGICAL_VOLUME_INTEGRITY_DESC
4886	\|\| pTag->idTag == UDF_TAG_ID_LOGICAL_VOLUME_DESC
4887	\|\| pTag->idTag == UDF_TAG_ID_UNALLOCATED_SPACE_DESC
4888	)
4889	)
4890	)
4891	{
4892	switch (pTag->idTag)
4893	{
4894	case UDF_TAG_ID_PRIMARY_VOL_DESC:
4895	rc = rtFsIsoVolProcessUdfPrimaryVolDesc(pInfo, (PCUDFPRIMARYVOLUMEDESC)pTag, pErrInfo);
4896	break;
4897
4898	case UDF_TAG_ID_IMPLEMENTATION_USE_VOLUME_DESC:
4899	rc = rtFsIsoVolProcessUdfImplUseVolDesc(pInfo, (PCUDFIMPLEMENTATIONUSEVOLUMEDESC)pTag, pErrInfo);
4900	break;
4901
4902	case UDF_TAG_ID_PARTITION_DESC:
4903	rc = rtFsIsoVolProcessUdfPartitionDesc(pInfo, (PCUDFPARTITIONDESC)pTag, pErrInfo);
4904	break;
4905
4906	case UDF_TAG_ID_LOGICAL_VOLUME_DESC:
4907	if (rc != VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC)
4908	rc = rtFsIsoVolProcessUdfLogicalVolumeDesc(pInfo, (PCUDFLOGICALVOLUMEDESC)pTag,
4909	pThis->cbSector, pErrInfo);
4910	else
4911	rc = VERR_ISOFS_TOO_BIT_PARTMAP_IN_LVD;
4912	break;
4913
4914	case UDF_TAG_ID_LOGICAL_VOLUME_INTEGRITY_DESC:
4915	Log(("ISO/UDF: Ignoring logical volume integrity descriptor at offset %#RX64.\n", offSeq + offInSeq));
4916	rc = VINF_SUCCESS;
4917	break;
4918
4919	case UDF_TAG_ID_UNALLOCATED_SPACE_DESC:
4920	Log(("ISO/UDF: Ignoring unallocated space descriptor at offset %#RX64.\n", offSeq + offInSeq));
4921	rc = VINF_SUCCESS;
4922	break;
4923
4924	case UDF_TAG_ID_ANCHOR_VOLUME_DESC_PTR:
4925	Log(("ISO/UDF: Ignoring AVDP in VDS (at offset %#RX64).\n", offSeq + offInSeq));
4926	rc = VINF_SUCCESS;
4927	break;
4928
4929	case UDF_TAG_ID_VOLUME_DESC_PTR:
4930	{
4931	PCUDFVOLUMEDESCPTR pVdp = (PCUDFVOLUMEDESCPTR)pTag;
4932	Log(("ISO/UDF: Processing volume descriptor pointer at offset %#RX64: %#x LB %#x (seq %#x); cNestings=%d\n",
4933	offSeq + offInSeq, pVdp->NextVolumeDescSeq.off, pVdp->NextVolumeDescSeq.cb,
4934	pVdp->uVolumeDescSeqNo, cNestings));
4935	rc = rtFsIsoVolReadAndProcessUdfVdsSeq(pThis, pInfo, (uint64_t)pVdp->NextVolumeDescSeq.off * pThis->cbSector,
4936	pVdp->NextVolumeDescSeq.cb, pbBuf, cbBuf, cNestings + 1, pErrInfo);
4937	break;
4938	}
4939
4940	case UDF_TAG_ID_TERMINATING_DESC:
4941	Log(("ISO/UDF: Terminating descriptor at offset %#RX64\n", offSeq + offInSeq));
4942	return VINF_SUCCESS;
4943
4944	default:
4945	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNEXPECTED_VDS_DESC,
4946	"Unexpected/unknown VDS descriptor %#x at byte offset %#RX64",
4947	pThis->cbSector, offSeq + offInSeq);
4948	}
4949	if (RT_FAILURE(rc))
4950	return rc;
4951	}
4952	/* The descriptor sequence is usually zero padded to 16 sectors. Just
4953	ignore zero descriptors. */
4954	else if (rc != VERR_ISOFS_TAG_IS_ALL_ZEROS)
4955	return rc;
4956
4957	/*
4958	* Advance.
4959	*/
4960	offInSeq += pThis->cbSector;
4961	}
4962
4963	return VINF_SUCCESS;
4964	}
4965
4966
4967
4968	/**
4969	* Processes a volume descriptor sequence (VDS).
4970	*
4971	* @returns IPRT status code.
4972	* @param pThis The instance.
4973	* @param offSeq The byte offset of the sequence.
4974	* @param cbSeq The length of the sequence.
4975	* @param pSeenSequences Structure where to keep track of VDSes we've already
4976	* processed, to avoid redoing one that we don't
4977	* understand.
4978	* @param pbBuf Read buffer.
4979	* @param cbBuf Size of the read buffer. This is at least one
4980	* sector big.
4981	* @param pErrInfo Where to report extended error information.
4982	*/
4983	static int rtFsIsoVolReadAndProcessUdfVds(PRTFSISOVOL pThis, uint64_t offSeq, uint32_t cbSeq,
4984	PRTFSISOSEENSEQENCES pSeenSequences, uint8_t *pbBuf, size_t cbBuf,
4985	PRTERRINFO pErrInfo)
4986	{
4987	/*
4988	* Skip if already seen.
4989	*/
4990	uint32_t i = pSeenSequences->cSequences;
4991	while (i-- > 0)
4992	if ( pSeenSequences->aSequences[i].off == offSeq
4993	&& pSeenSequences->aSequences[i].cb == cbSeq)
4994	return VERR_NOT_FOUND;
4995
4996	/* Not seen, so add it. */
4997	Assert(pSeenSequences->cSequences + 1 <= RT_ELEMENTS(pSeenSequences->aSequences));
4998	pSeenSequences->aSequences[pSeenSequences->cSequences].cb = cbSeq;
4999	pSeenSequences->aSequences[pSeenSequences->cSequences].off = offSeq;
5000	pSeenSequences->cSequences++;
5001
5002	LogFlow(("ISO/UDF: Processing anchor volume descriptor sequence at offset %#RX64 LB %#RX32\n", offSeq, cbSeq));
5003
5004	/*
5005	* Gather relevant descriptor info from the VDS then process it and on
5006	* success copy it into the instance.
5007	*
5008	* The processing has to be done in a different function because there may
5009	* be links to sub-sequences that needs to be processed. We do this by
5010	* recursing and check that we don't go to deep.
5011	*/
5012	RTFSISOVDSINFO Info;
5013	RT_ZERO(Info);
5014	int rc = rtFsIsoVolReadAndProcessUdfVdsSeq(pThis, &Info, offSeq, cbSeq, pbBuf, cbBuf, 0, pErrInfo);
5015	if (RT_SUCCESS(rc))
5016	{
5017	rc = rtFsIsoVolProcessUdfVdsSeqInfo(pThis, &Info, pErrInfo);
5018	if (RT_SUCCESS(rc))
5019	rc = rtFsIsoVolProcessUdfFileSetDescs(pThis, pbBuf, cbBuf, pErrInfo);
5020	}
5021
5022	/*
5023	* Clean up info.
5024	*/
5025	i = Info.cPrimaryVols;
5026	while (i-- > 0)
5027	RTMemFree(Info.apPrimaryVols[i]);
5028
5029	i = Info.cLogicalVols;
5030	while (i-- > 0)
5031	RTMemFree(Info.apLogicalVols[i]);
5032
5033	i = Info.cPartitions;
5034	while (i-- > 0)
5035	RTMemFree(Info.apPartitions[i]);
5036
5037	RTMemFree(Info.paPartMaps);
5038
5039	return rc;
5040	}
5041
5042
5043	static int rtFsIsoVolReadAndHandleUdfAvdp(PRTFSISOVOL pThis, uint64_t offAvdp, uint8_t *pbBuf, size_t cbBuf,
5044	PRTFSISOSEENSEQENCES pSeenSequences, PRTERRINFO pErrInfo)
5045	{
5046	/*
5047	* Try read the descriptor and validate its tag.
5048	*/
5049	PUDFANCHORVOLUMEDESCPTR pAvdp = (PUDFANCHORVOLUMEDESCPTR)pbBuf;
5050	size_t cbAvdpRead = RT_MIN(pThis->cbSector, cbBuf);
5051	int rc = RTVfsFileReadAt(pThis->hVfsBacking, offAvdp, pAvdp, cbAvdpRead, NULL);
5052	if (RT_SUCCESS(rc))
5053	{
5054	rc = rtFsIsoVolValidateUdfDescTag(&pAvdp->Tag, UDF_TAG_ID_ANCHOR_VOLUME_DESC_PTR, offAvdp / pThis->cbSector, pErrInfo);
5055	if (RT_SUCCESS(rc))
5056	{
5057	Log2(("ISO/UDF: AVDP: MainVolumeDescSeq=%#RX32 LB %#RX32, ReserveVolumeDescSeq=%#RX32 LB %#RX32\n",
5058	pAvdp->MainVolumeDescSeq.off, pAvdp->MainVolumeDescSeq.cb,
5059	pAvdp->ReserveVolumeDescSeq.off, pAvdp->ReserveVolumeDescSeq.cb));
5060
5061	/*
5062	* Try the main sequence if it looks sane.
5063	*/
5064	UDFEXTENTAD const ReserveVolumeDescSeq = pAvdp->ReserveVolumeDescSeq;
5065	if ( pAvdp->MainVolumeDescSeq.off < pThis->cBackingSectors
5066	&& (uint64_t)pAvdp->MainVolumeDescSeq.off
5067	+ (pAvdp->MainVolumeDescSeq.cb + pThis->cbSector - 1) / pThis->cbSector
5068	<= pThis->cBackingSectors)
5069	{
5070	rc = rtFsIsoVolReadAndProcessUdfVds(pThis, (uint64_t)pAvdp->MainVolumeDescSeq.off * pThis->cbSector,
5071	pAvdp->MainVolumeDescSeq.cb, pSeenSequences, pbBuf, cbBuf, pErrInfo);
5072	if (RT_SUCCESS(rc))
5073	return rc;
5074	}
5075	else
5076	rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_FOUND,
5077	"MainVolumeDescSeq is out of bounds: sector %#RX32 LB %#RX32 bytes, image is %#RX64 sectors",
5078	pAvdp->MainVolumeDescSeq.off, pAvdp->MainVolumeDescSeq.cb, pThis->cBackingSectors);
5079	if (ReserveVolumeDescSeq.cb > 0)
5080	{
5081	if ( ReserveVolumeDescSeq.off < pThis->cBackingSectors
5082	&& (uint64_t)ReserveVolumeDescSeq.off
5083	+ (ReserveVolumeDescSeq.cb + pThis->cbSector - 1) / pThis->cbSector
5084	<= pThis->cBackingSectors)
5085	{
5086	rc = rtFsIsoVolReadAndProcessUdfVds(pThis, (uint64_t)ReserveVolumeDescSeq.off * pThis->cbSector,
5087	ReserveVolumeDescSeq.cb, pSeenSequences, pbBuf, cbBuf, pErrInfo);
5088	if (RT_SUCCESS(rc))
5089	return rc;
5090	}
5091	else if (RT_SUCCESS(rc))
5092	rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_FOUND,
5093	"ReserveVolumeDescSeq is out of bounds: sector %#RX32 LB %#RX32 bytes, image is %#RX64 sectors",
5094	ReserveVolumeDescSeq.off, ReserveVolumeDescSeq.cb, pThis->cBackingSectors);
5095	}
5096	}
5097	}
5098	else
5099	rc = RTERRINFO_LOG_SET_F(pErrInfo, rc,
5100	"Error reading sector at offset %#RX64 (anchor volume descriptor pointer): %Rrc", offAvdp, rc);
5101
5102	return rc;
5103	}
5104
5105
5106	/**
5107	* Goes looking for UDF when we've seens a volume recognition sequence.
5108	*
5109	* @returns IPRT status code.
5110	* @param pThis The volume instance data.
5111	* @param puUdfLevel The UDF level indicated by the VRS.
5112	* @param offUdfBootVolDesc The offset of the BOOT2 descriptor, UINT64_MAX
5113	* if not encountered.
5114	* @param pbBuf Buffer for reading into.
5115	* @param cbBuf The size of the buffer. At least one sector.
5116	* @param pErrInfo Where to return extended error info.
5117	*/
5118	static int rtFsIsoVolHandleUdfDetection(PRTFSISOVOL pThis, uint8_t *puUdfLevel, uint64_t offUdfBootVolDesc,
5119	uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo)
5120	{
5121	NOREF(offUdfBootVolDesc);
5122
5123	/*
5124	* There are up to three anchor volume descriptor pointers that can give us
5125	* two different descriptor sequences each. Usually, the different AVDP
5126	* structures points to the same two sequences. The idea here is that
5127	* sectors may deteriorate and become unreadable, and we're supposed to try
5128	* out alternative sectors to get the job done. If we really took this
5129	* seriously, we could try read all sequences in parallel and use the
5130	* sectors that are good. However, we'll try keep things reasonably simple
5131	* since we'll most likely be reading from hard disks rather than optical
5132	* media.
5133	*
5134	* We keep track of which sequences we've processed so we don't try to do it
5135	* again when alternative AVDP sectors points to the same sequences.
5136	*/
5137	pThis->Udf.uLevel = *puUdfLevel;
5138	RTFSISOSEENSEQENCES SeenSequences;
5139	RT_ZERO(SeenSequences);
5140	int rc1 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, 256 * pThis->cbSector, pbBuf, cbBuf,
5141	&SeenSequences, pErrInfo);
5142	if (RT_SUCCESS(rc1))
5143	return rc1;
5144
5145	int rc2 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, pThis->cbBacking - 256 * pThis->cbSector,
5146	pbBuf, cbBuf, &SeenSequences, pErrInfo);
5147	if (RT_SUCCESS(rc2))
5148	return rc2;
5149
5150	int rc3 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, pThis->cbBacking - pThis->cbSector,
5151	pbBuf, cbBuf, &SeenSequences, pErrInfo);
5152	if (RT_SUCCESS(rc3))
5153	return rc3;
5154
5155	/*
5156	* Return failure if the alternatives have been excluded.
5157	*
5158	* Note! The error info won't be correct here.
5159	*/
5160	pThis->Udf.uLevel = *puUdfLevel = 0;
5161
5162	if (RTFSISO9660_F_IS_ONLY_TYPE(pThis->fFlags, RTFSISO9660_F_NO_UDF))
5163	return rc1 != VERR_NOT_FOUND ? rc1 : rc2 != VERR_NOT_FOUND ? rc2 : rc3;
5164	return VINF_SUCCESS;
5165	}
5166
5167
5168
5169	#ifdef LOG_ENABLED
5170
5171	/** Logging helper. */
5172	static size_t rtFsIsoVolGetStrippedLength(const char *pachField, size_t cchField)
5173	{
5174	while (cchField > 0 && pachField[cchField - 1] == ' ')
5175	cchField--;
5176	return cchField;
5177	}
5178
5179	/** Logging helper. */
5180	static char rtFsIsoVolGetMaybeUtf16Be(const char pachField, size_t cchField, char *pszDst, size_t cbDst)
5181	{
5182	/* Check the format by looking for zero bytes. ISO-9660 doesn't allow zeros.
5183	This doesn't have to be a UTF-16BE string. */
5184	size_t cFirstZeros = 0;
5185	size_t cSecondZeros = 0;
5186	for (size_t off = 0; off + 1 < cchField; off += 2)
5187	{
5188	cFirstZeros += pachField[off] == '\0';
5189	cSecondZeros += pachField[off + 1] == '\0';
5190	}
5191
5192	int rc = VINF_SUCCESS;
5193	char *pszTmp = &pszDst[10];
5194	size_t cchRet = 0;
5195	if (cFirstZeros > cSecondZeros)
5196	{
5197	/* UTF-16BE / UTC-2BE: */
5198	if (cchField & 1)
5199	{
5200	if (pachField[cchField - 1] == '\0' \|\| pachField[cchField - 1] == ' ')
5201	cchField--;
5202	else
5203	rc = VERR_INVALID_UTF16_ENCODING;
5204	}
5205	if (RT_SUCCESS(rc))
5206	{
5207	while ( cchField >= 2
5208	&& pachField[cchField - 1] == ' '
5209	&& pachField[cchField - 2] == '\0')
5210	cchField -= 2;
5211
5212	rc = RTUtf16BigToUtf8Ex((PCRTUTF16)pachField, cchField / sizeof(RTUTF16), &pszTmp, cbDst - 10 - 1, &cchRet);
5213	}
5214	if (RT_SUCCESS(rc))
5215	{
5216	pszDst[0] = 'U';
5217	pszDst[1] = 'T';
5218	pszDst[2] = 'F';
5219	pszDst[3] = '-';
5220	pszDst[4] = '1';
5221	pszDst[5] = '6';
5222	pszDst[6] = 'B';
5223	pszDst[7] = 'E';
5224	pszDst[8] = ':';
5225	pszDst[9] = '\'';
5226	pszDst[10 + cchRet] = '\'';
5227	pszDst[10 + cchRet + 1] = '\0';
5228	}
5229	else
5230	RTStrPrintf(pszDst, cbDst, "UTF-16BE: %.*Rhxs", cchField, pachField);
5231	}
5232	else if (cSecondZeros > 0)
5233	{
5234	/* Little endian UTF-16 / UCS-2 (ASSUMES host is little endian, sorry) */
5235	if (cchField & 1)
5236	{
5237	if (pachField[cchField - 1] == '\0' \|\| pachField[cchField - 1] == ' ')
5238	cchField--;
5239	else
5240	rc = VERR_INVALID_UTF16_ENCODING;
5241	}
5242	if (RT_SUCCESS(rc))
5243	{
5244	while ( cchField >= 2
5245	&& pachField[cchField - 1] == '\0'
5246	&& pachField[cchField - 2] == ' ')
5247	cchField -= 2;
5248
5249	rc = RTUtf16ToUtf8Ex((PCRTUTF16)pachField, cchField / sizeof(RTUTF16), &pszTmp, cbDst - 10 - 1, &cchRet);
5250	}
5251	if (RT_SUCCESS(rc))
5252	{
5253	pszDst[0] = 'U';
5254	pszDst[1] = 'T';
5255	pszDst[2] = 'F';
5256	pszDst[3] = '-';
5257	pszDst[4] = '1';
5258	pszDst[5] = '6';
5259	pszDst[6] = 'L';
5260	pszDst[7] = 'E';
5261	pszDst[8] = ':';
5262	pszDst[9] = '\'';
5263	pszDst[10 + cchRet] = '\'';
5264	pszDst[10 + cchRet + 1] = '\0';
5265	}
5266	else
5267	RTStrPrintf(pszDst, cbDst, "UTF-16LE: %.*Rhxs", cchField, pachField);
5268	}
5269	else
5270	{
5271	/* ASSUME UTF-8/ASCII. */
5272	while ( cchField > 0
5273	&& pachField[cchField - 1] == ' ')
5274	cchField--;
5275	rc = RTStrValidateEncodingEx(pachField, cchField, RTSTR_VALIDATE_ENCODING_EXACT_LENGTH);
5276	if (RT_SUCCESS(rc))
5277	RTStrPrintf(pszDst, cbDst, "UTF-8: '%.*s'", cchField, pachField);
5278	else
5279	RTStrPrintf(pszDst, cbDst, "UNK-8: %.*Rhxs", cchField, pachField);
5280	}
5281	return pszDst;
5282	}
5283
5284
5285	/**
5286	* Logs the primary or supplementary volume descriptor
5287	*
5288	* @param pVolDesc The descriptor.
5289	*/
5290	static void rtFsIsoVolLogPrimarySupplementaryVolDesc(PCISO9660SUPVOLDESC pVolDesc)
5291	{
5292	if (LogIs2Enabled())
5293	{
5294	char szTmp[384];
5295	Log2(("ISO9660: fVolumeFlags: %#RX8\n", pVolDesc->fVolumeFlags));
5296	Log2(("ISO9660: achSystemId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achSystemId, sizeof(pVolDesc->achSystemId), szTmp, sizeof(szTmp)) ));
5297	Log2(("ISO9660: achVolumeId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achVolumeId, sizeof(pVolDesc->achVolumeId), szTmp, sizeof(szTmp)) ));
5298	Log2(("ISO9660: Unused73: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->Unused73.be), RT_LE2H_U32(pVolDesc->Unused73.le)));
5299	Log2(("ISO9660: VolumeSpaceSize: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le)));
5300	Log2(("ISO9660: abEscapeSequences: '%.s'\n", rtFsIsoVolGetStrippedLength((char )pVolDesc->abEscapeSequences, sizeof(pVolDesc->abEscapeSequences)), pVolDesc->abEscapeSequences));
5301	Log2(("ISO9660: cVolumesInSet: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le)));
5302	Log2(("ISO9660: VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le)));
5303	Log2(("ISO9660: cbLogicalBlock: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le)));
5304	Log2(("ISO9660: cbPathTable: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->cbPathTable.be), RT_LE2H_U32(pVolDesc->cbPathTable.le)));
5305	Log2(("ISO9660: offTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offTypeLPathTable)));
5306	Log2(("ISO9660: offOptionalTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offOptionalTypeLPathTable)));
5307	Log2(("ISO9660: offTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offTypeMPathTable)));
5308	Log2(("ISO9660: offOptionalTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offOptionalTypeMPathTable)));
5309	Log2(("ISO9660: achVolumeSetId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achVolumeSetId, sizeof(pVolDesc->achVolumeSetId), szTmp, sizeof(szTmp)) ));
5310	Log2(("ISO9660: achPublisherId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achPublisherId, sizeof(pVolDesc->achPublisherId), szTmp, sizeof(szTmp)) ));
5311	Log2(("ISO9660: achDataPreparerId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achDataPreparerId, sizeof(pVolDesc->achDataPreparerId), szTmp, sizeof(szTmp)) ));
5312	Log2(("ISO9660: achApplicationId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achApplicationId, sizeof(pVolDesc->achApplicationId), szTmp, sizeof(szTmp)) ));
5313	Log2(("ISO9660: achCopyrightFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achCopyrightFileId, sizeof(pVolDesc->achCopyrightFileId), szTmp, sizeof(szTmp)) ));
5314	Log2(("ISO9660: achAbstractFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achAbstractFileId, sizeof(pVolDesc->achAbstractFileId), szTmp, sizeof(szTmp)) ));
5315	Log2(("ISO9660: achBibliographicFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achBibliographicFileId, sizeof(pVolDesc->achBibliographicFileId), szTmp, sizeof(szTmp)) ));
5316	Log2(("ISO9660: BirthTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5317	pVolDesc->BirthTime.achYear,
5318	pVolDesc->BirthTime.achMonth,
5319	pVolDesc->BirthTime.achDay,
5320	pVolDesc->BirthTime.achHour,
5321	pVolDesc->BirthTime.achMinute,
5322	pVolDesc->BirthTime.achSecond,
5323	pVolDesc->BirthTime.achCentisecond,
5324	pVolDesc->BirthTime.offUtc*4/60));
5325	Log2(("ISO9660: ModifyTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5326	pVolDesc->ModifyTime.achYear,
5327	pVolDesc->ModifyTime.achMonth,
5328	pVolDesc->ModifyTime.achDay,
5329	pVolDesc->ModifyTime.achHour,
5330	pVolDesc->ModifyTime.achMinute,
5331	pVolDesc->ModifyTime.achSecond,
5332	pVolDesc->ModifyTime.achCentisecond,
5333	pVolDesc->ModifyTime.offUtc*4/60));
5334	Log2(("ISO9660: ExpireTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5335	pVolDesc->ExpireTime.achYear,
5336	pVolDesc->ExpireTime.achMonth,
5337	pVolDesc->ExpireTime.achDay,
5338	pVolDesc->ExpireTime.achHour,
5339	pVolDesc->ExpireTime.achMinute,
5340	pVolDesc->ExpireTime.achSecond,
5341	pVolDesc->ExpireTime.achCentisecond,
5342	pVolDesc->ExpireTime.offUtc*4/60));
5343	Log2(("ISO9660: EffectiveTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n",
5344	pVolDesc->EffectiveTime.achYear,
5345	pVolDesc->EffectiveTime.achMonth,
5346	pVolDesc->EffectiveTime.achDay,
5347	pVolDesc->EffectiveTime.achHour,
5348	pVolDesc->EffectiveTime.achMinute,
5349	pVolDesc->EffectiveTime.achSecond,
5350	pVolDesc->EffectiveTime.achCentisecond,
5351	pVolDesc->EffectiveTime.offUtc*4/60));
5352	Log2(("ISO9660: bFileStructureVersion: %#RX8\n", pVolDesc->bFileStructureVersion));
5353	Log2(("ISO9660: bReserved883: %#RX8\n", pVolDesc->bReserved883));
5354
5355	Log2(("ISO9660: RootDir.cbDirRec: %#RX8\n", pVolDesc->RootDir.DirRec.cbDirRec));
5356	Log2(("ISO9660: RootDir.cExtAttrBlocks: %#RX8\n", pVolDesc->RootDir.DirRec.cExtAttrBlocks));
5357	Log2(("ISO9660: RootDir.offExtent: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.offExtent.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.offExtent.le)));
5358	Log2(("ISO9660: RootDir.cbData: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.cbData.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.cbData.le)));
5359	Log2(("ISO9660: RootDir.RecTime: %04u-%02u-%02u %02u:%02u:%02u%+03d\n",
5360	pVolDesc->RootDir.DirRec.RecTime.bYear + 1900,
5361	pVolDesc->RootDir.DirRec.RecTime.bMonth,
5362	pVolDesc->RootDir.DirRec.RecTime.bDay,
5363	pVolDesc->RootDir.DirRec.RecTime.bHour,
5364	pVolDesc->RootDir.DirRec.RecTime.bMinute,
5365	pVolDesc->RootDir.DirRec.RecTime.bSecond,
5366	pVolDesc->RootDir.DirRec.RecTime.offUtc*4/60));
5367	Log2(("ISO9660: RootDir.RecTime.fFileFlags: %RX8\n", pVolDesc->RootDir.DirRec.fFileFlags));
5368	Log2(("ISO9660: RootDir.RecTime.bFileUnitSize: %RX8\n", pVolDesc->RootDir.DirRec.bFileUnitSize));
5369	Log2(("ISO9660: RootDir.RecTime.bInterleaveGapSize: %RX8\n", pVolDesc->RootDir.DirRec.bInterleaveGapSize));
5370	Log2(("ISO9660: RootDir.RecTime.VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.le)));
5371	Log2(("ISO9660: RootDir.RecTime.bFileIdLength: %RX8\n", pVolDesc->RootDir.DirRec.bFileIdLength));
5372	Log2(("ISO9660: RootDir.RecTime.achFileId: '%.*s'\n", pVolDesc->RootDir.DirRec.bFileIdLength, pVolDesc->RootDir.DirRec.achFileId));
5373	uint32_t offSysUse = RT_UOFFSETOF_DYN(ISO9660DIRREC, achFileId[pVolDesc->RootDir.DirRec.bFileIdLength])
5374	+ !(pVolDesc->RootDir.DirRec.bFileIdLength & 1);
5375	if (offSysUse < pVolDesc->RootDir.DirRec.cbDirRec)
5376	{
5377	Log2(("ISO9660: RootDir System Use:\n%.*RhxD\n",
5378	pVolDesc->RootDir.DirRec.cbDirRec - offSysUse, &pVolDesc->RootDir.ab[offSysUse]));
5379	}
5380	}
5381	}
5382
5383	#endif /* LOG_ENABLED */
5384
5385	/**
5386	* Deal with a root directory from a primary or supplemental descriptor.
5387	*
5388	* @returns IPRT status code.
5389	* @param pThis The ISO 9660 instance being initialized.
5390	* @param pRootDir The root directory record to check out.
5391	* @param pDstRootDir Where to store a copy of the root dir record.
5392	* @param pErrInfo Where to return additional error info. Can be NULL.
5393	*/
5394	static int rtFsIsoVolHandleRootDir(PRTFSISOVOL pThis, PCISO9660DIRREC pRootDir,
5395	PISO9660DIRREC pDstRootDir, PRTERRINFO pErrInfo)
5396	{
5397	if (pRootDir->cbDirRec < RT_UOFFSETOF(ISO9660DIRREC, achFileId))
5398	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Root dir record size is too small: %#x (min %#x)",
5399	pRootDir->cbDirRec, RT_UOFFSETOF(ISO9660DIRREC, achFileId));
5400
5401	if (!(pRootDir->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY))
5402	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5403	"Root dir is not flagged as directory: %#x", pRootDir->fFileFlags);
5404	if (pRootDir->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)
5405	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5406	"Root dir is cannot be multi-extent: %#x", pRootDir->fFileFlags);
5407
5408	if (RT_LE2H_U32(pRootDir->cbData.le) != RT_BE2H_U32(pRootDir->cbData.be))
5409	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir size: {%#RX32,%#RX32}",
5410	RT_BE2H_U32(pRootDir->cbData.be), RT_LE2H_U32(pRootDir->cbData.le));
5411	if (RT_LE2H_U32(pRootDir->cbData.le) == 0)
5412	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Zero sized root dir");
5413
5414	if (RT_LE2H_U32(pRootDir->offExtent.le) != RT_BE2H_U32(pRootDir->offExtent.be))
5415	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir extent: {%#RX32,%#RX32}",
5416	RT_BE2H_U32(pRootDir->offExtent.be), RT_LE2H_U32(pRootDir->offExtent.le));
5417
5418	if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != RT_BE2H_U16(pRootDir->VolumeSeqNo.be))
5419	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir volume sequence ID: {%#RX16,%#RX16}",
5420	RT_BE2H_U16(pRootDir->VolumeSeqNo.be), RT_LE2H_U16(pRootDir->VolumeSeqNo.le));
5421	if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != pThis->idPrimaryVol)
5422	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5423	"Expected root dir to have same volume sequence number as primary volume: %#x, expected %#x",
5424	RT_LE2H_U16(pRootDir->VolumeSeqNo.le), pThis->idPrimaryVol);
5425
5426	/*
5427	* Seems okay, copy it.
5428	*/
5429	pDstRootDir = pRootDir;
5430	return VINF_SUCCESS;
5431	}
5432
5433
5434	/**
5435	* Deal with a primary volume descriptor.
5436	*
5437	* @returns IPRT status code.
5438	* @param pThis The ISO 9660 instance being initialized.
5439	* @param pVolDesc The volume descriptor to handle.
5440	* @param offVolDesc The disk offset of the volume descriptor.
5441	* @param pRootDir Where to return a copy of the root directory record.
5442	* @param poffRootDirRec Where to return the disk offset of the root dir.
5443	* @param pErrInfo Where to return additional error info. Can be NULL.
5444	*/
5445	static int rtFsIsoVolHandlePrimaryVolDesc(PRTFSISOVOL pThis, PCISO9660PRIMARYVOLDESC pVolDesc, uint32_t offVolDesc,
5446	PISO9660DIRREC pRootDir, uint64_t *poffRootDirRec, PRTERRINFO pErrInfo)
5447	{
5448	if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION)
5449	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5450	"Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion);
5451
5452	/*
5453	* We need the block size ...
5454	*/
5455	pThis->cbBlock = RT_LE2H_U16(pVolDesc->cbLogicalBlock.le);
5456	if ( pThis->cbBlock != RT_BE2H_U16(pVolDesc->cbLogicalBlock.be)
5457	\|\| !RT_IS_POWER_OF_TWO(pThis->cbBlock)
5458	\|\| pThis->cbBlock / pThis->cbSector < 1)
5459	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid logical block size: {%#RX16,%#RX16}",
5460	RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le));
5461	if (pThis->cbBlock / pThis->cbSector > 128)
5462	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported block size: %#x\n", pThis->cbBlock);
5463
5464	/*
5465	* ... volume space size ...
5466	*/
5467	pThis->cBlocksInPrimaryVolumeSpace = RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le);
5468	if (pThis->cBlocksInPrimaryVolumeSpace != RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be))
5469	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume space size: {%#RX32,%#RX32}",
5470	RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le));
5471	pThis->cbPrimaryVolumeSpace = pThis->cBlocksInPrimaryVolumeSpace * (uint64_t)pThis->cbBlock;
5472
5473	/*
5474	* ... number of volumes in the set ...
5475	*/
5476	pThis->cVolumesInSet = RT_LE2H_U16(pVolDesc->cVolumesInSet.le);
5477	if ( pThis->cVolumesInSet != RT_BE2H_U16(pVolDesc->cVolumesInSet.be)
5478	\|\| pThis->cVolumesInSet == 0)
5479	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume set size: {%#RX16,%#RX16}",
5480	RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le));
5481	if (pThis->cVolumesInSet > 32)
5482	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Too large volume set size: %#x\n", pThis->cVolumesInSet);
5483
5484	/*
5485	* ... primary volume sequence ID ...
5486	*/
5487	pThis->idPrimaryVol = RT_LE2H_U16(pVolDesc->VolumeSeqNo.le);
5488	if (pThis->idPrimaryVol != RT_BE2H_U16(pVolDesc->VolumeSeqNo.be))
5489	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume sequence ID: {%#RX16,%#RX16}",
5490	RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le));
5491	if ( pThis->idPrimaryVol > pThis->cVolumesInSet
5492	\|\| pThis->idPrimaryVol < 1)
5493	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5494	"Volume sequence ID out of of bound: %#x (1..%#x)\n", pThis->idPrimaryVol, pThis->cVolumesInSet);
5495
5496	/*
5497	* ... and the root directory record.
5498	*/
5499	*poffRootDirRec = offVolDesc + RT_UOFFSETOF(ISO9660PRIMARYVOLDESC, RootDir.DirRec);
5500	return rtFsIsoVolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo);
5501	}
5502
5503
5504	/**
5505	* Deal with a supplementary volume descriptor.
5506	*
5507	* @returns IPRT status code.
5508	* @param pThis The ISO 9660 instance being initialized.
5509	* @param pVolDesc The volume descriptor to handle.
5510	* @param offVolDesc The disk offset of the volume descriptor.
5511	* @param pbUcs2Level Where to return the joliet level, if found. Caller
5512	* initializes this to zero, we'll return 1, 2 or 3 if
5513	* joliet was detected.
5514	* @param pRootDir Where to return the root directory, if found.
5515	* @param poffRootDirRec Where to return the disk offset of the root dir.
5516	* @param pErrInfo Where to return additional error info. Can be NULL.
5517	*/
5518	static int rtFsIsoVolHandleSupplementaryVolDesc(PRTFSISOVOL pThis, PCISO9660SUPVOLDESC pVolDesc, uint32_t offVolDesc,
5519	uint8_t pbUcs2Level, PISO9660DIRREC pRootDir, uint64_t poffRootDirRec,
5520	PRTERRINFO pErrInfo)
5521	{
5522	if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION)
5523	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5524	"Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion);
5525
5526	/*
5527	* Is this a joliet volume descriptor? If not, we probably don't need to
5528	* care about it.
5529	*/
5530	if ( pVolDesc->abEscapeSequences[0] != ISO9660_JOLIET_ESC_SEQ_0
5531	\|\| pVolDesc->abEscapeSequences[1] != ISO9660_JOLIET_ESC_SEQ_1
5532	\|\| ( pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1
5533	&& pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2
5534	&& pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_3))
5535	return VINF_SUCCESS;
5536
5537	/*
5538	* Skip if joliet is unwanted.
5539	*/
5540	if (pThis->fFlags & RTFSISO9660_F_NO_JOLIET)
5541	return VINF_SUCCESS;
5542
5543	/*
5544	* Check that the joliet descriptor matches the primary one.
5545	* Note! These are our assumptions and may be wrong.
5546	*/
5547	if (pThis->cbBlock == 0)
5548	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5549	"Supplementary joliet volume descriptor is not supported when appearing before the primary volume descriptor");
5550	if (ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock) != pThis->cbBlock)
5551	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5552	"Logical block size for joliet volume descriptor differs from primary: %#RX16 vs %#RX16\n",
5553	ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock), pThis->cbBlock);
5554	/* Used to be !=, changed to > for ubuntu 20.10 and later. Wonder if they exclude a few files
5555	and thus end up with a different total. Obviously, this test is a big bogus, as we don't
5556	really seem to care about the value at all... */
5557	if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize) > pThis->cBlocksInPrimaryVolumeSpace)
5558	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5559	"Volume space size for joliet volume descriptor differs from primary: %#RX32 vs %#RX32\n",
5560	ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize), pThis->cBlocksInPrimaryVolumeSpace);
5561	if (ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet) != pThis->cVolumesInSet)
5562	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5563	"Volume set size for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n",
5564	ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet), pThis->cVolumesInSet);
5565	if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo) != pThis->idPrimaryVol)
5566	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5567	"Volume sequence ID for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n",
5568	ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo), pThis->idPrimaryVol);
5569
5570	if (*pbUcs2Level != 0)
5571	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one supplementary joliet volume descriptor");
5572
5573	/*
5574	* Switch to the joliet root dir as it has UTF-16 stuff in it.
5575	*/
5576	int rc = rtFsIsoVolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo);
5577	if (RT_SUCCESS(rc))
5578	{
5579	*poffRootDirRec = offVolDesc + RT_UOFFSETOF(ISO9660SUPVOLDESC, RootDir.DirRec);
5580	*pbUcs2Level = pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1 ? 1
5581	: pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2 ? 2 : 3;
5582	Log(("ISO9660: Joliet with UCS-2 level %u\n", *pbUcs2Level));
5583	}
5584	return rc;
5585	}
5586
5587
5588
5589	/**
5590	* Worker for RTFsIso9660VolOpen.
5591	*
5592	* @returns IPRT status code.
5593	* @param pThis The ISO VFS instance to initialize.
5594	* @param hVfsSelf The ISO VFS handle (no reference consumed).
5595	* @param hVfsBacking The file backing the alleged ISO file system.
5596	* Reference is consumed (via rtFsIsoVol_Close).
5597	* @param fFlags Flags, RTFSISO9660_F_XXX.
5598	* @param pErrInfo Where to return additional error info. Can be NULL.
5599	*/
5600	static int rtFsIsoVolTryInit(PRTFSISOVOL pThis, RTVFS hVfsSelf, RTVFSFILE hVfsBacking, uint32_t fFlags, PRTERRINFO pErrInfo)
5601	{
5602	uint32_t const cbSector = 2048;
5603
5604	/*
5605	* First initialize the state so that rtFsIsoVol_Destroy won't trip up.
5606	*/
5607	pThis->hVfsSelf = hVfsSelf;
5608	pThis->hVfsBacking = hVfsBacking; /* Caller referenced it for us, we consume it; rtFsIsoVol_Destroy releases it. */
5609	pThis->cbBacking = 0;
5610	pThis->cBackingSectors = 0;
5611	pThis->fFlags = fFlags;
5612	pThis->cbSector = cbSector;
5613	pThis->cbBlock = 0;
5614	pThis->cBlocksInPrimaryVolumeSpace = 0;
5615	pThis->cbPrimaryVolumeSpace = 0;
5616	pThis->cVolumesInSet = 0;
5617	pThis->idPrimaryVol = UINT32_MAX;
5618	pThis->fIsUtf16 = false;
5619	pThis->pRootDir = NULL;
5620
5621	/*
5622	* Get stuff that may fail.
5623	*/
5624	int rc = RTVfsFileQuerySize(hVfsBacking, &pThis->cbBacking);
5625	if (RT_SUCCESS(rc))
5626	pThis->cBackingSectors = pThis->cbBacking / pThis->cbSector;
5627	else
5628	return rc;
5629
5630	/*
5631	* Read the volume descriptors starting at logical sector 16.
5632	*/
5633	union
5634	{
5635	uint8_t ab[RTFSISO_MAX_LOGICAL_BLOCK_SIZE];
5636	uint16_t au16[RTFSISO_MAX_LOGICAL_BLOCK_SIZE / 2];
5637	uint32_t au32[RTFSISO_MAX_LOGICAL_BLOCK_SIZE / 4];
5638	ISO9660VOLDESCHDR VolDescHdr;
5639	ISO9660BOOTRECORD BootRecord;
5640	ISO9660PRIMARYVOLDESC PrimaryVolDesc;
5641	ISO9660SUPVOLDESC SupVolDesc;
5642	ISO9660VOLPARTDESC VolPartDesc;
5643	} Buf;
5644	RT_ZERO(Buf);
5645
5646	uint64_t offRootDirRec = UINT64_MAX;
5647	ISO9660DIRREC RootDir;
5648	RT_ZERO(RootDir);
5649
5650	uint64_t offJolietRootDirRec = UINT64_MAX;
5651	uint8_t bJolietUcs2Level = 0;
5652	ISO9660DIRREC JolietRootDir;
5653	RT_ZERO(JolietRootDir);
5654
5655	uint8_t uUdfLevel = 0;
5656	uint64_t offUdfBootVolDesc = UINT64_MAX;
5657
5658	uint32_t cPrimaryVolDescs = 0;
5659	uint32_t cSupplementaryVolDescs = 0;
5660	uint32_t cBootRecordVolDescs = 0;
5661	uint32_t offVolDesc = 16 * cbSector;
5662	enum
5663	{
5664	kStateStart = 0,
5665	kStateNoSeq,
5666	kStateCdSeq,
5667	kStateUdfSeq
5668	} enmState = kStateStart;
5669	for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector)
5670	{
5671	if (iVolDesc > 32)
5672	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "More than 32 volume descriptors, doesn't seem right...");
5673
5674	/* Read the next one and check the signature. */
5675	rc = RTVfsFileReadAt(hVfsBacking, offVolDesc, &Buf, cbSector, NULL);
5676	if (RT_FAILURE(rc))
5677	return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc);
5678
5679	#define MATCH_STD_ID(a_achStdId1, a_szStdId2) \
5680	( (a_achStdId1)[0] == (a_szStdId2)[0] \
5681	&& (a_achStdId1)[1] == (a_szStdId2)[1] \
5682	&& (a_achStdId1)[2] == (a_szStdId2)[2] \
5683	&& (a_achStdId1)[3] == (a_szStdId2)[3] \
5684	&& (a_achStdId1)[4] == (a_szStdId2)[4] )
5685	#define MATCH_HDR(a_pStd, a_bType2, a_szStdId2, a_bVer2) \
5686	( MATCH_STD_ID((a_pStd)->achStdId, a_szStdId2) \
5687	&& (a_pStd)->bDescType == (a_bType2) \
5688	&& (a_pStd)->bDescVersion == (a_bVer2) )
5689
5690	/*
5691	* ISO 9660 ("CD001").
5692	*/
5693	if ( ( enmState == kStateStart
5694	\|\| enmState == kStateCdSeq
5695	\|\| enmState == kStateNoSeq)
5696	&& MATCH_STD_ID(Buf.VolDescHdr.achStdId, ISO9660VOLDESC_STD_ID) )
5697	{
5698	enmState = kStateCdSeq;
5699
5700	/* Do type specific handling. */
5701	Log(("ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType));
5702	if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY)
5703	{
5704	cPrimaryVolDescs++;
5705	if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION)
5706	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5707	"Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
5708	#ifdef LOG_ENABLED
5709	rtFsIsoVolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc);
5710	#endif
5711	if (cPrimaryVolDescs == 1)
5712	rc = rtFsIsoVolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo);
5713	else if (cPrimaryVolDescs == 2)
5714	Log(("ISO9660: ignoring 2nd primary descriptor\n")); /* so we can read the w2k3 ifs kit */
5715	else
5716	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor");
5717	}
5718	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY)
5719	{
5720	cSupplementaryVolDescs++;
5721	if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION)
5722	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5723	"Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
5724	#ifdef LOG_ENABLED
5725	rtFsIsoVolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc);
5726	#endif
5727	rc = rtFsIsoVolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir,
5728	&offJolietRootDirRec, pErrInfo);
5729	}
5730	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD)
5731	{
5732	cBootRecordVolDescs++;
5733	}
5734	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR)
5735	{
5736	if (!cPrimaryVolDescs)
5737	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor");
5738	enmState = kStateNoSeq;
5739	}
5740	else
5741	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
5742	"Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType);
5743	}
5744	/*
5745	* UDF volume recognition sequence (VRS).
5746	*/
5747	else if ( ( enmState == kStateNoSeq
5748	\|\| enmState == kStateStart)
5749	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BEGIN, UDF_EXT_VOL_DESC_VERSION) )
5750	{
5751	if (uUdfLevel == 0)
5752	enmState = kStateUdfSeq;
5753	else
5754	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BEA01 sequence is supported");
5755	}
5756	else if ( enmState == kStateUdfSeq
5757	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_02, UDF_EXT_VOL_DESC_VERSION) )
5758	uUdfLevel = 2;
5759	else if ( enmState == kStateUdfSeq
5760	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_03, UDF_EXT_VOL_DESC_VERSION) )
5761	uUdfLevel = 3;
5762	else if ( enmState == kStateUdfSeq
5763	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BOOT, UDF_EXT_VOL_DESC_VERSION) )
5764	{
5765	if (offUdfBootVolDesc == UINT64_MAX)
5766	offUdfBootVolDesc = iVolDesc * cbSector;
5767	else
5768	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BOOT2 descriptor is supported");
5769	}
5770	else if ( enmState == kStateUdfSeq
5771	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_TERM, UDF_EXT_VOL_DESC_VERSION) )
5772	{
5773	if (uUdfLevel != 0)
5774	enmState = kStateNoSeq;
5775	else
5776	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Found BEA01 & TEA01, but no NSR02 or NSR03 descriptors");
5777	}
5778	/*
5779	* Unknown, probably the end.
5780	*/
5781	else if (enmState == kStateNoSeq)
5782	break;
5783	else if (enmState == kStateStart)
5784	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
5785	"Not ISO? Unable to recognize volume descriptor signature: %.5Rhxs", Buf.VolDescHdr.achStdId);
5786	else if (enmState == kStateCdSeq)
5787	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5788	"Missing ISO 9660 terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
5789	else if (enmState == kStateUdfSeq)
5790	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
5791	"Missing UDF terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
5792	else
5793	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
5794	"Unknown volume descriptor signature found at sector %u: %.5Rhxs",
5795	16 + iVolDesc, Buf.VolDescHdr.achStdId);
5796	if (RT_FAILURE(rc))
5797	return rc;
5798	}
5799
5800	/*
5801	* If we found a UDF VRS and are interested in UDF, we have more work to do here.
5802	*/
5803	if (uUdfLevel > 0 && !(fFlags & RTFSISO9660_F_NO_UDF) )
5804	{
5805	Log(("rtFsIsoVolTryInit: uUdfLevel=%d\n", uUdfLevel));
5806	rc = rtFsIsoVolHandleUdfDetection(pThis, &uUdfLevel, offUdfBootVolDesc, Buf.ab, sizeof(Buf), pErrInfo);
5807	if (RT_FAILURE(rc))
5808	return rc;
5809	}
5810
5811	/*
5812	* Decide which to prefer.
5813	*
5814	* By default we pick UDF over any of the two ISO 9960, there is currently
5815	* no way to override this without using the RTFSISO9660_F_NO_XXX options.
5816	*
5817	* If there isn't UDF, we may faced with choosing between joliet and rock
5818	* ridge. The joliet option is generally favorable as we don't have to
5819	* guess wrt to the file name encoding. So, we'll pick that for now.
5820	*
5821	* Note! Should we change this preference for joliet, there fun wrt making sure
5822	* there really is rock ridge stuff in the primary volume as well as
5823	* making sure there really is anything of value in the primary volume.
5824	*/
5825	if (uUdfLevel > 0)
5826	{
5827	pThis->enmType = RTFSISOVOLTYPE_UDF;
5828	rc = rtFsIsoDirShrd_NewUdf(pThis, NULL /pParent/, &pThis->Udf.VolInfo.RootDirIcb,
5829	NULL /pFileIdDesc/, 0 /offInDir/, &pThis->pRootDir);
5830	/** @todo fall back on failure? */
5831	return rc;
5832	}
5833	if (bJolietUcs2Level != 0)
5834	{
5835	pThis->enmType = RTFSISOVOLTYPE_JOLIET;
5836	pThis->fIsUtf16 = true;
5837	return rtFsIsoDirShrd_New9660(pThis, NULL, &JolietRootDir, 1, offJolietRootDirRec, &pThis->pRootDir);
5838	}
5839	pThis->enmType = RTFSISOVOLTYPE_ISO9960;
5840	return rtFsIsoDirShrd_New9660(pThis, NULL, &RootDir, 1, offRootDirRec, &pThis->pRootDir);
5841	}
5842
5843
5844	/**
5845	* Opens an ISO 9660 file system volume.
5846	*
5847	* @returns IPRT status code.
5848	* @param hVfsFileIn The file or device backing the volume.
5849	* @param fFlags RTFSISO9660_F_XXX.
5850	* @param phVfs Where to return the virtual file system handle.
5851	* @param pErrInfo Where to return additional error information.
5852	*/
5853	RTDECL(int) RTFsIso9660VolOpen(RTVFSFILE hVfsFileIn, uint32_t fFlags, PRTVFS phVfs, PRTERRINFO pErrInfo)
5854	{
5855	/*
5856	* Quick input validation.
5857	*/
5858	AssertPtrReturn(phVfs, VERR_INVALID_POINTER);
5859	*phVfs = NIL_RTVFS;
5860	AssertReturn(!(fFlags & ~RTFSISO9660_F_VALID_MASK), VERR_INVALID_FLAGS);
5861
5862	uint32_t cRefs = RTVfsFileRetain(hVfsFileIn);
5863	AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
5864
5865	/*
5866	* Create a new ISO VFS instance and try initialize it using the given input file.
5867	*/
5868	RTVFS hVfs = NIL_RTVFS;
5869	void *pvThis = NULL;
5870	int rc = RTVfsNew(&g_rtFsIsoVolOps, sizeof(RTFSISOVOL), NIL_RTVFS, RTVFSLOCK_CREATE_RW, &hVfs, &pvThis);
5871	if (RT_SUCCESS(rc))
5872	{
5873	rc = rtFsIsoVolTryInit((PRTFSISOVOL)pvThis, hVfs, hVfsFileIn, fFlags, pErrInfo);
5874	if (RT_SUCCESS(rc))
5875	*phVfs = hVfs;
5876	else
5877	RTVfsRelease(hVfs);
5878	}
5879	else
5880	RTVfsFileRelease(hVfsFileIn);
5881	return rc;
5882	}
5883
5884
5885	/**
5886	* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnValidate}
5887	*/
5888	static DECLCALLBACK(int) rtVfsChainIsoFsVol_Validate(PCRTVFSCHAINELEMENTREG pProviderReg, PRTVFSCHAINSPEC pSpec,
5889	PRTVFSCHAINELEMSPEC pElement, uint32_t *poffError, PRTERRINFO pErrInfo)
5890	{
5891	RT_NOREF(pProviderReg, pSpec);
5892
5893	/*
5894	* Basic checks.
5895	*/
5896	if (pElement->enmTypeIn != RTVFSOBJTYPE_FILE)
5897	return pElement->enmTypeIn == RTVFSOBJTYPE_INVALID ? VERR_VFS_CHAIN_CANNOT_BE_FIRST_ELEMENT : VERR_VFS_CHAIN_TAKES_FILE;
5898	if ( pElement->enmType != RTVFSOBJTYPE_VFS
5899	&& pElement->enmType != RTVFSOBJTYPE_DIR)
5900	return VERR_VFS_CHAIN_ONLY_DIR_OR_VFS;
5901	if (pElement->cArgs > 1)
5902	return VERR_VFS_CHAIN_AT_MOST_ONE_ARG;
5903
5904	/*
5905	* Parse the flag if present, save in pElement->uProvider.
5906	*/
5907	uint32_t fFlags = 0;
5908	if (pElement->cArgs > 0)
5909	{
5910	for (uint32_t iArg = 0; iArg < pElement->cArgs; iArg++)
5911	{
5912	const char *psz = pElement->paArgs[iArg].psz;
5913	if (*psz)
5914	{
5915	if (!strcmp(psz, "nojoliet"))
5916	fFlags \|= RTFSISO9660_F_NO_JOLIET;
5917	else if (!strcmp(psz, "norock"))
5918	fFlags \|= RTFSISO9660_F_NO_ROCK;
5919	else if (!strcmp(psz, "noudf"))
5920	fFlags \|= RTFSISO9660_F_NO_UDF;
5921	else
5922	{
5923	*poffError = pElement->paArgs[iArg].offSpec;
5924	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_CHAIN_INVALID_ARGUMENT, "Only knows: 'nojoliet' and 'norock'");
5925	}
5926	}
5927	}
5928	}
5929
5930	pElement->uProvider = fFlags;
5931	return VINF_SUCCESS;
5932	}
5933
5934
5935	/**
5936	* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnInstantiate}
5937	*/
5938	static DECLCALLBACK(int) rtVfsChainIsoFsVol_Instantiate(PCRTVFSCHAINELEMENTREG pProviderReg, PCRTVFSCHAINSPEC pSpec,
5939	PCRTVFSCHAINELEMSPEC pElement, RTVFSOBJ hPrevVfsObj,
5940	PRTVFSOBJ phVfsObj, uint32_t *poffError, PRTERRINFO pErrInfo)
5941	{
5942	RT_NOREF(pProviderReg, pSpec, poffError);
5943
5944	int rc;
5945	RTVFSFILE hVfsFileIn = RTVfsObjToFile(hPrevVfsObj);
5946	if (hVfsFileIn != NIL_RTVFSFILE)
5947	{
5948	RTVFS hVfs;
5949	rc = RTFsIso9660VolOpen(hVfsFileIn, pElement->uProvider, &hVfs, pErrInfo);
5950	RTVfsFileRelease(hVfsFileIn);
5951	if (RT_SUCCESS(rc))
5952	{
5953	*phVfsObj = RTVfsObjFromVfs(hVfs);
5954	RTVfsRelease(hVfs);
5955	if (*phVfsObj != NIL_RTVFSOBJ)
5956	return VINF_SUCCESS;
5957	rc = VERR_VFS_CHAIN_CAST_FAILED;
5958	}
5959	}
5960	else
5961	rc = VERR_VFS_CHAIN_CAST_FAILED;
5962	return rc;
5963	}
5964
5965
5966	/**
5967	* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnCanReuseElement}
5968	*/
5969	static DECLCALLBACK(bool) rtVfsChainIsoFsVol_CanReuseElement(PCRTVFSCHAINELEMENTREG pProviderReg,
5970	PCRTVFSCHAINSPEC pSpec, PCRTVFSCHAINELEMSPEC pElement,
5971	PCRTVFSCHAINSPEC pReuseSpec, PCRTVFSCHAINELEMSPEC pReuseElement)
5972	{
5973	RT_NOREF(pProviderReg, pSpec, pReuseSpec);
5974	if ( pElement->paArgs[0].uProvider == pReuseElement->paArgs[0].uProvider
5975	\|\| !pReuseElement->paArgs[0].uProvider)
5976	return true;
5977	return false;
5978	}
5979
5980
5981	/** VFS chain element 'file'. */
5982	static RTVFSCHAINELEMENTREG g_rtVfsChainIsoFsVolReg =
5983	{
5984	/* uVersion = */ RTVFSCHAINELEMENTREG_VERSION,
5985	/* fReserved = */ 0,
5986	/* pszName = */ "isofs",
5987	/* ListEntry = */ { NULL, NULL },
5988	/* pszHelp = */ "Open a ISO 9660 or UDF file system, requires a file object on the left side.\n"
5989	"The 'noudf' option make it ignore any UDF.\n"
5990	"The 'nojoliet' option make it ignore any joliet supplemental volume.\n"
5991	"The 'norock' option make it ignore any rock ridge info.\n",
5992	/* pfnValidate = */ rtVfsChainIsoFsVol_Validate,
5993	/* pfnInstantiate = */ rtVfsChainIsoFsVol_Instantiate,
5994	/* pfnCanReuseElement = */ rtVfsChainIsoFsVol_CanReuseElement,
5995	/* uEndMarker = */ RTVFSCHAINELEMENTREG_VERSION
5996	};
5997
5998	RTVFSCHAIN_AUTO_REGISTER_ELEMENT_PROVIDER(&g_rtVfsChainIsoFsVolReg, rtVfsChainIsoFsVolReg);
5999

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source: vbox/trunk/src/VBox/Runtime/common/fs/isovfs.cpp@ 90215

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