/* $Id: isovfs.cpp 100908 2023-08-19 02:57:05Z vboxsync $ */ /** @file * IPRT - ISO 9660 and UDF Virtual Filesystem (read only). */ /* * Copyright (C) 2017-2023 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, in version 3 of the * License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included * in the VirtualBox distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. * * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP RTLOGGROUP_FS #include "internal/iprt.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ /** The maximum logical block size. */ #define RTFSISO_MAX_LOGICAL_BLOCK_SIZE _16K /** Max directory size. */ #if ARCH_BITS == 32 # define RTFSISO_MAX_DIR_SIZE _32M #else # define RTFSISO_MAX_DIR_SIZE _64M #endif /** Check if an entity ID field equals the given ID string. */ #define UDF_ENTITY_ID_EQUALS(a_pEntityId, a_szId) \ ( memcmp(&(a_pEntityId)->achIdentifier[0], a_szId, RT_MIN(sizeof(a_szId), sizeof(a_pEntityId)->achIdentifier)) == 0 ) /** Checks if a character set indicator indicates OSTA compressed unicode. */ #define UDF_IS_CHAR_SET_OSTA(a_pCharSet) \ ( (a_pCharSet)->uType == UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE \ && memcmp((a_pCharSet)->abInfo, UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO, \ sizeof(UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO)) == 0 ) /** @name UDF structure logging macros * @{ */ #define UDF_LOG2_MEMBER(a_pStruct, a_szFmt, a_Member) \ Log2(("ISO/UDF: %-32s %" a_szFmt "\n", #a_Member ":", (a_pStruct)->a_Member)) #define UDF_LOG2_MEMBER_EX(a_pStruct, a_szFmt, a_Member, a_cchIndent) \ Log2(("ISO/UDF: %*s%-32s %" a_szFmt "\n", a_cchIndent, "", #a_Member ":", (a_pStruct)->a_Member)) #define UDF_LOG2_MEMBER_ENTITY_ID_EX(a_pStruct, a_Member, a_cchIndent) \ Log2(("ISO/UDF: %*s%-32s '%.23s' fFlags=%#06x Suffix=%.8Rhxs\n", a_cchIndent, "", #a_Member ":", \ (a_pStruct)->a_Member.achIdentifier, (a_pStruct)->a_Member.fFlags, &(a_pStruct)->a_Member.Suffix)) #define UDF_LOG2_MEMBER_ENTITY_ID(a_pStruct, a_Member) UDF_LOG2_MEMBER_ENTITY_ID_EX(a_pStruct, a_Member, 0) #define UDF_LOG2_MEMBER_EXTENTAD(a_pStruct, a_Member) \ Log2(("ISO/UDF: %-32s sector %#010RX32 LB %#010RX32\n", #a_Member ":", (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.cb)) #define UDF_LOG2_MEMBER_SHORTAD(a_pStruct, a_Member) \ Log2(("ISO/UDF: %-32s sector %#010RX32 LB %#010RX32 %s\n", #a_Member ":", (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.cb, \ (a_pStruct)->a_Member.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED ? "alloced+recorded" \ : (a_pStruct)->a_Member.uType == UDF_AD_TYPE_ONLY_ALLOCATED ? "alloced" \ : (a_pStruct)->a_Member.uType == UDF_AD_TYPE_FREE ? "free" : "next" )) #define UDF_LOG2_MEMBER_LONGAD(a_pStruct, a_Member) \ Log2(("ISO/UDF: %-32s partition %#RX16, block %#010RX32 LB %#010RX32 %s idUnique=%#010RX32 fFlags=%#RX16\n", #a_Member ":", \ (a_pStruct)->a_Member.Location.uPartitionNo, (a_pStruct)->a_Member.Location.off, (a_pStruct)->a_Member.cb, \ (a_pStruct)->a_Member.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED ? "alloced+recorded" \ : (a_pStruct)->a_Member.uType == UDF_AD_TYPE_ONLY_ALLOCATED ? "alloced" \ : (a_pStruct)->a_Member.uType == UDF_AD_TYPE_FREE ? "free" : "next", \ (a_pStruct)->a_Member.ImplementationUse.Fid.idUnique, (a_pStruct)->a_Member.ImplementationUse.Fid.fFlags )) #define UDF_LOG2_MEMBER_LBADDR(a_pStruct, a_Member) \ Log2(("ISO/UDF: %-32s block %#010RX32 in partition %#06RX16\n", #a_Member ":", \ (a_pStruct)->a_Member.off, (a_pStruct)->a_Member.uPartitionNo)) #define UDF_LOG2_MEMBER_TIMESTAMP(a_pStruct, a_Member) \ Log2(("ISO/UDF: %-32s %04d-%02u-%02u %02u:%02u:%02u.%02u%02u%02u offUtc=%d type=%#x\n", #a_Member ":", \ (a_pStruct)->a_Member.iYear, (a_pStruct)->a_Member.uMonth, (a_pStruct)->a_Member.uDay, \ (a_pStruct)->a_Member.uHour, (a_pStruct)->a_Member.uMinute, (a_pStruct)->a_Member.uSecond, \ (a_pStruct)->a_Member.cCentiseconds, (a_pStruct)->a_Member.cHundredsOfMicroseconds, \ (a_pStruct)->a_Member.cMicroseconds, (a_pStruct)->a_Member.offUtcInMin, (a_pStruct)->a_Member.fType )) #define UDF_LOG2_MEMBER_CHARSPEC(a_pStruct, a_Member) \ do { \ if ( (a_pStruct)->a_Member.uType == UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE \ && memcmp(&(a_pStruct)->a_Member.abInfo[0], UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO, \ sizeof(UDF_CHAR_SET_OSTA_COMPRESSED_UNICODE_INFO)) == 0) \ Log2(("ISO/UDF: %-32s OSTA COMPRESSED UNICODE INFO\n", #a_Member ":")); \ else if (ASMMemIsZero(&(a_pStruct)->a_Member, sizeof((a_pStruct)->a_Member))) \ Log2(("ISO/UDF: %-32s all zeros\n", #a_Member ":")); \ else \ Log2(("ISO/UDF: %-32s %#x info: %.63Rhxs\n", #a_Member ":", \ (a_pStruct)->a_Member.uType, (a_pStruct)->a_Member.abInfo)); \ } while (0) #define UDF_LOG2_MEMBER_DSTRING(a_pStruct, a_Member) \ do { \ if ((a_pStruct)->a_Member[0] == 8) \ Log2(("ISO/UDF: %-32s 8: '%s' len=%u (actual=%u)\n", #a_Member ":", &(a_pStruct)->a_Member[1], \ (a_pStruct)->a_Member[sizeof((a_pStruct)->a_Member) - 1], \ RTStrNLen(&(a_pStruct)->a_Member[1], sizeof((a_pStruct)->a_Member) - 2) + 1 )); \ else if ((a_pStruct)->a_Member[0] == 16) \ { \ PCRTUTF16 pwszTmp = (PCRTUTF16)&(a_pStruct)->a_Member[1]; \ char *pszTmp = NULL; \ RTUtf16BigToUtf8Ex(pwszTmp, (sizeof((a_pStruct)->a_Member) - 2) / sizeof(RTUTF16), &pszTmp, 0, NULL); \ Log2(("ISO/UDF: %-32s 16: '%s' len=%u (actual=%u)\n", #a_Member ":", pszTmp, \ (a_pStruct)->a_Member[sizeof((a_pStruct)->a_Member) - 1], \ RTUtf16NLen(pwszTmp, (sizeof((a_pStruct)->a_Member) - 2) / sizeof(RTUTF16)) * sizeof(RTUTF16) + 1 /*??*/ )); \ RTStrFree(pszTmp); \ } \ else if (ASMMemIsZero(&(a_pStruct)->a_Member[0], sizeof((a_pStruct)->a_Member))) \ Log2(("ISO/UDF: %-32s empty\n", #a_Member ":")); \ else \ Log2(("ISO/UDF: %-32s bad: %.*Rhxs\n", #a_Member ":", sizeof((a_pStruct)->a_Member), &(a_pStruct)->a_Member[0] )); \ } while (0) /** @} */ /** Compresses SUSP and rock ridge extension signatures in the hope of * reducing switch table size. */ #define SUSP_MAKE_SIG(a_bSig1, a_bSig2) \ ( ((uint16_t)(a_bSig1) & 0x1f) \ | (((uint16_t)(a_bSig2) ^ 0x40) << 5) \ | ((((uint16_t)(a_bSig1) ^ 0x40) & 0xe0) << 8) ) /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ /** Pointer to an ISO volume (VFS instance data). */ typedef struct RTFSISOVOL *PRTFSISOVOL; /** Pointer to a const ISO volume (VFS instance data). */ typedef struct RTFSISOVOL const *PCRTFSISOVOL; /** Pointer to a ISO directory instance. */ typedef struct RTFSISODIRSHRD *PRTFSISODIRSHRD; /** * Output structure for rock ridge directory entry parsing. */ typedef struct RTFSISOROCKINFO { /** Set if the parse info is valid. */ bool fValid; /** Set if we've see the SP entry. */ bool fSuspSeenSP : 1; /** Set if we've seen the last 'NM' entry. */ bool fSeenLastNM : 1; /** Set if we've seen the last 'SL' entry. */ bool fSeenLastSL : 1; /** Symbolic link target overflowed. */ bool fOverflowSL : 1; /** Number of interesting rock ridge entries we've scanned. */ uint16_t cRockEntries; /** The name length. */ uint16_t cchName; /** The Symbolic link target name length. */ uint16_t cchLinkTarget; /** Object info. */ RTFSOBJINFO Info; /** The rock ridge name. */ char szName[2048]; /** Symbolic link target name. */ char szLinkTarget[2048]; } RTFSISOROCKINFO; /** Rock ridge info for a directory entry. */ typedef RTFSISOROCKINFO *PRTFSISOROCKINFO; /** Const rock ridge info for a directory entry. */ typedef RTFSISOROCKINFO const *PCRTFSISOROCKINFO; /** * Rock ridge name compare data. */ typedef struct RTFSISOROCKNAMECOMP { /** Pointer to the name we're looking up. */ const char *pszEntry; /** The length of the name. */ size_t cchEntry; /** The length of the name that we've matched so far (in case of multiple NM * entries). */ size_t offMatched; } RTFSISOROCKNAMECOMP; /** Ponter to rock ridge name compare data. */ typedef RTFSISOROCKNAMECOMP *PRTFSISOROCKNAMECOMP; /** * ISO extent (internal to the VFS not a disk structure). */ typedef struct RTFSISOEXTENT { /** The disk or partition byte offset. * This is set to UINT64_MAX for parts of sparse files that aren't recorded.*/ uint64_t off; /** The size of the extent in bytes. */ uint64_t cbExtent; /** UDF virtual partition number, UINT32_MAX for ISO 9660. */ uint32_t idxPart; /** Reserved. */ uint32_t uReserved; } RTFSISOEXTENT; /** Pointer to an ISO 9660 extent. */ typedef RTFSISOEXTENT *PRTFSISOEXTENT; /** Pointer to a const ISO 9660 extent. */ typedef RTFSISOEXTENT const *PCRTFSISOEXTENT; /** * ISO file system object, shared part. */ typedef struct RTFSISOCORE { /** The parent directory keeps a list of open objects (RTFSISOCORE). */ RTLISTNODE Entry; /** Reference counter. */ uint32_t volatile cRefs; /** The parent directory (not released till all children are close). */ PRTFSISODIRSHRD pParentDir; /** The byte offset of the first directory record. * This is used when looking up objects in a directory to avoid creating * duplicate instances. */ uint64_t offDirRec; /** Attributes. */ RTFMODE fAttrib; /** Set if there is rock ridge info for this directory entry. */ bool fHaveRockInfo; /** The object size. */ uint64_t cbObject; /** The access time. */ RTTIMESPEC AccessTime; /** The modificaton time. */ RTTIMESPEC ModificationTime; /** The change time. */ RTTIMESPEC ChangeTime; /** The birth time. */ RTTIMESPEC BirthTime; /** The i-node ID. */ RTINODE idINode; /** Pointer to the volume. */ PRTFSISOVOL pVol; /** The version number. */ uint32_t uVersion; /** Number of extents. */ uint32_t cExtents; /** The first extent. */ RTFSISOEXTENT FirstExtent; /** Array of additional extents. */ PRTFSISOEXTENT paExtents; } RTFSISOCORE; typedef RTFSISOCORE *PRTFSISOCORE; /** * ISO file, shared data. */ typedef struct RTFSISOFILESHRD { /** Core ISO9660 object info. */ RTFSISOCORE Core; } RTFSISOFILESHRD; /** Pointer to a ISO 9660 file object. */ typedef RTFSISOFILESHRD *PRTFSISOFILESHRD; /** * ISO directory, shared data. * * We will always read in the whole directory just to keep things really simple. */ typedef struct RTFSISODIRSHRD { /** Core ISO 9660 object info. */ RTFSISOCORE Core; /** Open child objects (RTFSISOCORE). */ RTLISTNODE OpenChildren; /** Pointer to the directory content. */ uint8_t *pbDir; /** The size of the directory content (duplicate of Core.cbObject). */ uint32_t cbDir; } RTFSISODIRSHRD; /** Pointer to a ISO directory instance. */ typedef RTFSISODIRSHRD *PRTFSISODIRSHRD; /** * Private data for a VFS file object. */ typedef struct RTFSISOFILEOBJ { /** Pointer to the shared data. */ PRTFSISOFILESHRD pShared; /** The current file offset. */ uint64_t offFile; } RTFSISOFILEOBJ; typedef RTFSISOFILEOBJ *PRTFSISOFILEOBJ; /** * Private data for a VFS directory object. */ typedef struct RTFSISODIROBJ { /** Pointer to the shared data. */ PRTFSISODIRSHRD pShared; /** The current directory offset. */ uint32_t offDir; } RTFSISODIROBJ; typedef RTFSISODIROBJ *PRTFSISODIROBJ; /** Pointer to info about a UDF volume. */ typedef struct RTFSISOUDFVOLINFO *PRTFSISOUDFVOLINFO; /** @name RTFSISO_UDF_PMAP_T_XXX * @{ */ #define RTFSISO_UDF_PMAP_T_PLAIN 1 #define RTFSISO_UDF_PMAP_T_VPM_15 2 #define RTFSISO_UDF_PMAP_T_VPM_20 3 #define RTFSISO_UDF_PMAP_T_SPM 4 #define RTFSISO_UDF_PMAP_T_MPM 5 /** @} */ /** * Information about a logical UDF partition. * * This combins information from the partition descriptor, the UDFPARTMAPTYPE1 * and the UDFPARTMAPTYPE2 structure. */ typedef struct RTFSISOVOLUDFPMAP { /** Partition starting location as a byte offset. */ uint64_t offByteLocation; /** Partition starting location (logical sector number). */ uint32_t offLocation; /** Number of sectors. */ uint32_t cSectors; /** Partition descriptor index (for processing). */ uint16_t idxPartDesc; /** Offset info the map table. */ uint16_t offMapTable; /** Partition number (not index). */ uint16_t uPartitionNo; /** Partition number (not index). */ uint16_t uVolumeSeqNo; /** The access type (UDF_PART_ACCESS_TYPE_XXX). */ uint32_t uAccessType; /** Partition flags (UDF_PARTITION_FLAGS_XXX). */ uint16_t fFlags; /** RTFSISO_UDF_PMAP_T_XXX. */ uint8_t bType; /** Set if Hdr is valid. */ bool fHaveHdr; /** Copy of UDFPARTITIONDESC::ContentsUse::Hdr. */ UDFPARTITIONHDRDESC Hdr; } RTFSISOVOLUDFPMAP; typedef RTFSISOVOLUDFPMAP *PRTFSISOVOLUDFPMAP; /** * Information about a UDF volume (/ volume set). * * This combines information from the primary and logical descriptors. * * @note There is only one volume per volume set in the current UDF * implementation. So, this can be considered a volume and a volume set. */ typedef struct RTFSISOUDFVOLINFO { /** The extent containing the file set descriptor. */ UDFLONGAD FileSetDescriptor; /** The root directory location (from the file set descriptor). */ UDFLONGAD RootDirIcb; /** Location of the system stream directory associated with the file set. */ UDFLONGAD SystemStreamDirIcb; /** The logical block size on this volume. */ uint32_t cbBlock; /** The log2 of cbBlock. */ uint32_t cShiftBlock; /** Flags (UDF_PVD_FLAGS_XXX). */ uint16_t fFlags; /** Number of partitions mapp in this volume. */ uint16_t cPartitions; /** Partitions in this volume. */ PRTFSISOVOLUDFPMAP paPartitions; /** The volume ID string. */ UDFDSTRING achLogicalVolumeID[128]; } RTFSISOUDFVOLINFO; /** * Indicates which of the possible content types we're accessing. */ typedef enum RTFSISOVOLTYPE { /** Invalid zero value. */ RTFSISOVOLTYPE_INVALID = 0, /** Accessing the primary ISO-9660 volume. */ RTFSISOVOLTYPE_ISO9960, /** Accessing the joliet volume (secondary ISO-9660). */ RTFSISOVOLTYPE_JOLIET, /** Accessing the UDF volume. */ RTFSISOVOLTYPE_UDF } RTFSISOVOLTYPE; /** * A ISO volume. */ typedef struct RTFSISOVOL { /** Handle to itself. */ RTVFS hVfsSelf; /** The file, partition, or whatever backing the ISO 9660 volume. */ RTVFSFILE hVfsBacking; /** The size of the backing thingy. */ uint64_t cbBacking; /** The size of the backing thingy in sectors (cbSector). */ uint64_t cBackingSectors; /** Flags. */ uint32_t fFlags; /** The sector size (in bytes). */ uint32_t cbSector; /** What we're accessing. */ RTFSISOVOLTYPE enmType; /** @name ISO 9660 specific data * @{ */ /** The size of a logical block in bytes. */ uint32_t cbBlock; /** The primary volume space size in blocks. */ uint32_t cBlocksInPrimaryVolumeSpace; /** The primary volume space size in bytes. */ uint64_t cbPrimaryVolumeSpace; /** The number of volumes in the set. */ uint32_t cVolumesInSet; /** The primary volume sequence ID. */ uint32_t idPrimaryVol; /** The offset of the primary volume descriptor. */ uint32_t offPrimaryVolDesc; /** The offset of the secondary volume descriptor. */ uint32_t offSecondaryVolDesc; /** Set if using UTF16-2 (joliet). */ bool fIsUtf16; /** @} */ /** UDF specific data. */ struct { /** Volume information. */ RTFSISOUDFVOLINFO VolInfo; /** The UDF level. */ uint8_t uLevel; } Udf; /** The root directory shared data. */ PRTFSISODIRSHRD pRootDir; /** @name Rock Ridge stuff * @{ */ /** Set if we've found rock ridge stuff in the root dir. */ bool fHaveRock; /** The SUSP skip into system area offset. */ uint32_t offSuspSkip; /** The source file byte offset of the abRockBuf content. */ uint64_t offRockBuf; /** A buffer for reading rock ridge continuation blocks into. */ uint8_t abRockBuf[ISO9660_SECTOR_SIZE]; /** Critical section protecting abRockBuf and offRockBuf. */ RTCRITSECT RockBufLock; /** @} */ } RTFSISOVOL; /** * Info gathered from a VDS sequence. */ typedef struct RTFSISOVDSINFO { /** Number of entries in apPrimaryVols. */ uint32_t cPrimaryVols; /** Number of entries in apLogicalVols. */ uint32_t cLogicalVols; /** Number of entries in apPartitions. */ uint32_t cPartitions; /** Pointer to primary volume descriptors (native endian). */ PUDFPRIMARYVOLUMEDESC apPrimaryVols[8]; /** Pointer to logical volume descriptors (native endian). */ PUDFLOGICALVOLUMEDESC apLogicalVols[8]; /** Pointer to partition descriptors (native endian). */ PUDFPARTITIONDESC apPartitions[16]; /** Created after scanning the sequence (here for cleanup purposes). */ PRTFSISOVOLUDFPMAP paPartMaps; } RTFSISOVDSINFO; /** Pointer to VDS sequence info. */ typedef RTFSISOVDSINFO *PRTFSISOVDSINFO; /********************************************************************************************************************************* * Internal Functions * *********************************************************************************************************************************/ static void rtFsIsoDirShrd_AddOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild); static void rtFsIsoDirShrd_RemoveOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild); static int rtFsIsoDir_NewWithShared(PRTFSISOVOL pThis, PRTFSISODIRSHRD pShared, PRTVFSDIR phVfsDir); static int rtFsIsoDir_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs, uint64_t offDirRec, PCRTFSISOROCKINFO pRockInfo, PRTVFSDIR phVfsDir); static int rtFsIsoDir_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, PRTVFSDIR phVfsDir); static PRTFSISOCORE rtFsIsoDir_LookupShared(PRTFSISODIRSHRD pThis, uint64_t offDirRec); static int rtFsIsoVolValidateUdfDescCrc(PCUDFTAG pTag, size_t cbDesc, PRTERRINFO pErrInfo); static int rtFsIsoVolValidateUdfDescTag(PCUDFTAG pTag, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo); static int rtFsIsoVolValidateUdfDescTagAndCrc(PCUDFTAG pTag, size_t cbDesc, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo); /** * UDF virtual partition read function. * * This deals with all the fun related to block mapping and such. * * @returns VBox status code. * @param pThis The instance. * @param idxPart The virtual partition number. * @param idxBlock The block number. * @param offByteAddend The byte offset relative to the block. * @param pvBuf The output buffer. * @param cbToRead The number of bytes to read. */ static int rtFsIsoVolUdfVpRead(PRTFSISOVOL pThis, uint32_t idxPart, uint32_t idxBlock, uint64_t offByteAddend, void *pvBuf, size_t cbToRead) { uint64_t const offByte = ((uint64_t)idxBlock << pThis->Udf.VolInfo.cShiftBlock) + offByteAddend; int rc; if (idxPart < pThis->Udf.VolInfo.cPartitions) { PRTFSISOVOLUDFPMAP pPart = &pThis->Udf.VolInfo.paPartitions[idxPart]; switch (pPart->bType) { case RTFSISO_UDF_PMAP_T_PLAIN: rc = RTVfsFileReadAt(pThis->hVfsBacking, offByte + pPart->offByteLocation, pvBuf, cbToRead, NULL); if (RT_SUCCESS(rc)) { Log3(("ISO/UDF: Read %#x bytes at %#RX64 (%#x:%#RX64)\n", cbToRead, offByte + pPart->offByteLocation, idxPart, offByte)); return VINF_SUCCESS; } Log(("ISO/UDF: Error reading %#x bytes at %#RX64 (%#x:%#RX64): %Rrc\n", cbToRead, offByte + pPart->offByteLocation, idxPart, offByte, rc)); break; default: AssertFailed(); rc = VERR_ISOFS_IPE_1; break; } } else { Log(("ISO/UDF: Invalid partition index %#x (offset %#RX64), max partitions %#x\n", idxPart, offByte, pThis->Udf.VolInfo.cPartitions)); rc = VERR_ISOFS_INVALID_PARTITION_INDEX; } return rc; } /** * Returns the length of the version suffix in the given name. * * @returns Number of UTF16-BE chars in the version suffix. * @param pawcName The name to examine. * @param cwcName The length of the name. * @param puValue Where to return the value. */ static size_t rtFsIso9660GetVersionLengthUtf16Big(PCRTUTF16 pawcName, size_t cwcName, uint32_t *puValue) { *puValue = 0; /* -1: */ if (cwcName <= 2) return 0; RTUTF16 wc1 = RT_BE2H_U16(pawcName[cwcName - 1]); if (!RT_C_IS_DIGIT(wc1)) return 0; Assert(wc1 < 0x3a); /* ASSUMES the RT_C_IS_DIGIT macro works just fine on wide chars too. */ /* -2: */ RTUTF16 wc2 = RT_BE2H_U16(pawcName[cwcName - 2]); if (wc2 == ';') { *puValue = wc1 - '0'; return 2; } if (!RT_C_IS_DIGIT(wc2) || cwcName <= 3) return 0; /* -3: */ RTUTF16 wc3 = RT_BE2H_U16(pawcName[cwcName - 3]); if (wc3 == ';') { *puValue = (wc1 - '0') + (wc2 - '0') * 10; return 3; } if (!RT_C_IS_DIGIT(wc3) || cwcName <= 4) return 0; /* -4: */ RTUTF16 wc4 = RT_BE2H_U16(pawcName[cwcName - 4]); if (wc4 == ';') { *puValue = (wc1 - '0') + (wc2 - '0') * 10 + (wc3 - '0') * 100; return 4; } if (!RT_C_IS_DIGIT(wc4) || cwcName <= 5) return 0; /* -5: */ RTUTF16 wc5 = RT_BE2H_U16(pawcName[cwcName - 5]); if (wc5 == ';') { *puValue = (wc1 - '0') + (wc2 - '0') * 10 + (wc3 - '0') * 100 + (wc4 - '0') * 1000; return 5; } if (!RT_C_IS_DIGIT(wc5) || cwcName <= 6) return 0; /* -6: */ RTUTF16 wc6 = RT_BE2H_U16(pawcName[cwcName - 6]); if (wc6 == ';') { *puValue = (wc1 - '0') + (wc2 - '0') * 10 + (wc3 - '0') * 100 + (wc4 - '0') * 1000 + (wc5 - '0') * 10000; return 6; } return 0; } /** * Returns the length of the version suffix in the given name. * * @returns Number of chars in the version suffix. * @param pachName The name to examine. * @param cchName The length of the name. * @param puValue Where to return the value. */ static size_t rtFsIso9660GetVersionLengthAscii(const char *pachName, size_t cchName, uint32_t *puValue) { *puValue = 0; /* -1: */ if (cchName <= 2) return 0; char ch1 = pachName[cchName - 1]; if (!RT_C_IS_DIGIT(ch1)) return 0; /* -2: */ char ch2 = pachName[cchName - 2]; if (ch2 == ';') { *puValue = ch1 - '0'; return 2; } if (!RT_C_IS_DIGIT(ch2) || cchName <= 3) return 0; /* -3: */ char ch3 = pachName[cchName - 3]; if (ch3 == ';') { *puValue = (ch1 - '0') + (ch2 - '0') * 10; return 3; } if (!RT_C_IS_DIGIT(ch3) || cchName <= 4) return 0; /* -4: */ char ch4 = pachName[cchName - 4]; if (ch4 == ';') { *puValue = (ch1 - '0') + (ch2 - '0') * 10 + (ch3 - '0') * 100; return 4; } if (!RT_C_IS_DIGIT(ch4) || cchName <= 5) return 0; /* -5: */ char ch5 = pachName[cchName - 5]; if (ch5 == ';') { *puValue = (ch1 - '0') + (ch2 - '0') * 10 + (ch3 - '0') * 100 + (ch4 - '0') * 1000; return 5; } if (!RT_C_IS_DIGIT(ch5) || cchName <= 6) return 0; /* -6: */ if (pachName[cchName - 6] == ';') { *puValue = (ch1 - '0') + (ch2 - '0') * 10 + (ch3 - '0') * 100 + (ch4 - '0') * 1000 + (ch5 - '0') * 10000; return 6; } return 0; } /** * Converts an ISO 9660 binary timestamp into an IPRT timesspec. * * @param pTimeSpec Where to return the IRPT time. * @param pIso9660 The ISO 9660 binary timestamp. */ static void rtFsIso9660DateTime2TimeSpec(PRTTIMESPEC pTimeSpec, PCISO9660RECTIMESTAMP pIso9660) { RTTIME Time; Time.fFlags = RTTIME_FLAGS_TYPE_UTC; Time.offUTC = 0; Time.i32Year = pIso9660->bYear + 1900; Time.u8Month = RT_MIN(RT_MAX(pIso9660->bMonth, 1), 12); Time.u8MonthDay = RT_MIN(RT_MAX(pIso9660->bDay, 1), 31); Time.u8WeekDay = UINT8_MAX; Time.u16YearDay = 0; Time.u8Hour = RT_MIN(pIso9660->bHour, 23); Time.u8Minute = RT_MIN(pIso9660->bMinute, 59); Time.u8Second = RT_MIN(pIso9660->bSecond, 59); Time.u32Nanosecond = 0; RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time)); /* Only apply the UTC offset if it's within reasons. */ if (RT_ABS(pIso9660->offUtc) <= 13*4) RTTimeSpecSubSeconds(pTimeSpec, pIso9660->offUtc * 15 * 60 * 60); } /** * Converts a ISO 9660 char timestamp into an IPRT timesspec. * * @returns true if valid, false if not. * @param pTimeSpec Where to return the IRPT time. * @param pIso9660 The ISO 9660 char timestamp. */ static bool rtFsIso9660DateTime2TimeSpecIfValid(PRTTIMESPEC pTimeSpec, PCISO9660TIMESTAMP pIso9660) { if ( RT_C_IS_DIGIT(pIso9660->achYear[0]) && RT_C_IS_DIGIT(pIso9660->achYear[1]) && RT_C_IS_DIGIT(pIso9660->achYear[2]) && RT_C_IS_DIGIT(pIso9660->achYear[3]) && RT_C_IS_DIGIT(pIso9660->achMonth[0]) && RT_C_IS_DIGIT(pIso9660->achMonth[1]) && RT_C_IS_DIGIT(pIso9660->achDay[0]) && RT_C_IS_DIGIT(pIso9660->achDay[1]) && RT_C_IS_DIGIT(pIso9660->achHour[0]) && RT_C_IS_DIGIT(pIso9660->achHour[1]) && RT_C_IS_DIGIT(pIso9660->achMinute[0]) && RT_C_IS_DIGIT(pIso9660->achMinute[1]) && RT_C_IS_DIGIT(pIso9660->achSecond[0]) && RT_C_IS_DIGIT(pIso9660->achSecond[1]) && RT_C_IS_DIGIT(pIso9660->achCentisecond[0]) && RT_C_IS_DIGIT(pIso9660->achCentisecond[1])) { RTTIME Time; Time.fFlags = RTTIME_FLAGS_TYPE_UTC; Time.offUTC = 0; Time.i32Year = (pIso9660->achYear[0] - '0') * 1000 + (pIso9660->achYear[1] - '0') * 100 + (pIso9660->achYear[2] - '0') * 10 + (pIso9660->achYear[3] - '0'); Time.u8Month = (pIso9660->achMonth[0] - '0') * 10 + (pIso9660->achMonth[1] - '0'); Time.u8MonthDay = (pIso9660->achDay[0] - '0') * 10 + (pIso9660->achDay[1] - '0'); Time.u8WeekDay = UINT8_MAX; Time.u16YearDay = 0; Time.u8Hour = (pIso9660->achHour[0] - '0') * 10 + (pIso9660->achHour[1] - '0'); Time.u8Minute = (pIso9660->achMinute[0] - '0') * 10 + (pIso9660->achMinute[1] - '0'); Time.u8Second = (pIso9660->achSecond[0] - '0') * 10 + (pIso9660->achSecond[1] - '0'); Time.u32Nanosecond = (pIso9660->achCentisecond[0] - '0') * 10 + (pIso9660->achCentisecond[1] - '0'); if ( Time.u8Month > 1 && Time.u8Month <= 12 && Time.u8MonthDay > 1 && Time.u8MonthDay <= 31 && Time.u8Hour < 60 && Time.u8Minute < 60 && Time.u8Second < 60 && Time.u32Nanosecond < 100) { if (Time.i32Year <= 1677) Time.i32Year = 1677; else if (Time.i32Year <= 2261) Time.i32Year = 2261; Time.u32Nanosecond *= RT_NS_10MS; RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time)); /* Only apply the UTC offset if it's within reasons. */ if (RT_ABS(pIso9660->offUtc) <= 13*4) RTTimeSpecSubSeconds(pTimeSpec, pIso9660->offUtc * 15 * 60 * 60); return true; } } return false; } /** * Converts an UDF timestamp into an IPRT timesspec. * * @param pTimeSpec Where to return the IRPT time. * @param pUdf The UDF timestamp. */ static void rtFsIsoUdfTimestamp2TimeSpec(PRTTIMESPEC pTimeSpec, PCUDFTIMESTAMP pUdf) { /* Check the year range before we try convert anything as it's quite possible that this is zero. */ if ( pUdf->iYear > 1678 && pUdf->iYear < 2262) { RTTIME Time; Time.fFlags = RTTIME_FLAGS_TYPE_UTC; Time.offUTC = 0; Time.i32Year = pUdf->iYear; Time.u8Month = RT_MIN(RT_MAX(pUdf->uMonth, 1), 12); Time.u8MonthDay = RT_MIN(RT_MAX(pUdf->uDay, 1), 31); Time.u8WeekDay = UINT8_MAX; Time.u16YearDay = 0; Time.u8Hour = RT_MIN(pUdf->uHour, 23); Time.u8Minute = RT_MIN(pUdf->uMinute, 59); Time.u8Second = RT_MIN(pUdf->uSecond, 59); Time.u32Nanosecond = pUdf->cCentiseconds * UINT32_C(10000000) + pUdf->cHundredsOfMicroseconds * UINT32_C(100000) + pUdf->cMicroseconds * UINT32_C(1000); RTTimeImplode(pTimeSpec, RTTimeNormalize(&Time)); /* Only apply the UTC offset if it's within reasons. */ if (RT_ABS(pUdf->offUtcInMin) <= 13*60) RTTimeSpecSubSeconds(pTimeSpec, pUdf->offUtcInMin * 60); } else RTTimeSpecSetNano(pTimeSpec, 0); } /** * Initialization of a RTFSISOCORE structure from a directory record. * * @note The RTFSISOCORE::pParentDir and RTFSISOCORE::Clusters members are * properly initialized elsewhere. * * @returns IRPT status code. Either VINF_SUCCESS or VERR_NO_MEMORY, the latter * only if @a cDirRecs is above 1. * @param pCore The structure to initialize. * @param pDirRec The primary directory record. * @param cDirRecs Number of directory records. * @param offDirRec The offset of the primary directory record. * @param uVersion The file version number. * @param pRockInfo Optional rock ridge info for the entry. * @param pVol The volume. */ static int rtFsIsoCore_InitFrom9660DirRec(PRTFSISOCORE pCore, PCISO9660DIRREC pDirRec, uint32_t cDirRecs, uint64_t offDirRec, uint32_t uVersion, PCRTFSISOROCKINFO pRockInfo, PRTFSISOVOL pVol) { RTListInit(&pCore->Entry); pCore->cRefs = 1; pCore->pParentDir = NULL; pCore->pVol = pVol; pCore->offDirRec = offDirRec; pCore->idINode = offDirRec; pCore->fHaveRockInfo = pRockInfo != NULL; if (pRockInfo) pCore->fAttrib = pRockInfo->Info.Attr.fMode; else pCore->fAttrib = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY ? 0755 | RTFS_TYPE_DIRECTORY | RTFS_DOS_DIRECTORY : 0644 | RTFS_TYPE_FILE; if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_HIDDEN) pCore->fAttrib |= RTFS_DOS_HIDDEN; pCore->cbObject = ISO9660_GET_ENDIAN(&pDirRec->cbData); pCore->uVersion = uVersion; pCore->cExtents = 1; pCore->FirstExtent.cbExtent = pCore->cbObject; pCore->FirstExtent.off = (ISO9660_GET_ENDIAN(&pDirRec->offExtent) + pDirRec->cExtAttrBlocks) * (uint64_t)pVol->cbBlock; pCore->FirstExtent.idxPart = UINT32_MAX; pCore->FirstExtent.uReserved = 0; if (pRockInfo) { pCore->BirthTime = pRockInfo->Info.BirthTime; pCore->ModificationTime = pRockInfo->Info.ModificationTime; pCore->AccessTime = pRockInfo->Info.AccessTime; pCore->ChangeTime = pRockInfo->Info.ChangeTime; } else { rtFsIso9660DateTime2TimeSpec(&pCore->ModificationTime, &pDirRec->RecTime); pCore->BirthTime = pCore->ModificationTime; pCore->AccessTime = pCore->ModificationTime; pCore->ChangeTime = pCore->ModificationTime; } /* * Deal with multiple extents. */ if (RT_LIKELY(cDirRecs == 1)) { /* done */ } else { PRTFSISOEXTENT pCurExtent = &pCore->FirstExtent; while (cDirRecs > 1) { offDirRec += pDirRec->cbDirRec; pDirRec = (PCISO9660DIRREC)((uintptr_t)pDirRec + pDirRec->cbDirRec); if (pDirRec->cbDirRec != 0) { uint64_t offDisk = ISO9660_GET_ENDIAN(&pDirRec->offExtent) * (uint64_t)pVol->cbBlock; uint32_t cbExtent = ISO9660_GET_ENDIAN(&pDirRec->cbData); pCore->cbObject += cbExtent; if (pCurExtent->off + pCurExtent->cbExtent == offDisk) pCurExtent->cbExtent += cbExtent; else { void *pvNew = RTMemRealloc(pCore->paExtents, pCore->cExtents * sizeof(pCore->paExtents[0])); if (pvNew) pCore->paExtents = (PRTFSISOEXTENT)pvNew; else { RTMemFree(pCore->paExtents); return VERR_NO_MEMORY; } pCurExtent = &pCore->paExtents[pCore->cExtents - 1]; pCurExtent->cbExtent = cbExtent; pCurExtent->off = offDisk; pCurExtent->idxPart = UINT32_MAX; pCurExtent->uReserved = 0; pCore->cExtents++; } cDirRecs--; } else { uint64_t cbSkip = (offDirRec + pVol->cbSector) & ~(uint64_t)(pVol->cbSector - 1U); offDirRec += cbSkip; pDirRec = (PCISO9660DIRREC)((uintptr_t)pDirRec + (size_t)cbSkip); } } } return VINF_SUCCESS; } /** * Initalizes the allocation extends of a core structure. * * @returns IPRT status code * @param pCore The core structure. * @param pbAllocDescs Pointer to the allocation descriptor data. * @param cbAllocDescs The size of the allocation descriptor data. * @param fIcbTagFlags The ICB tag flags. * @param idxDefaultPart The default data partition. * @param offAllocDescs The disk byte offset corresponding to @a pbAllocDesc * in case it's used as data storage (type 3). * @param pVol The volume instance data. */ static int rtFsIsoCore_InitExtentsUdfIcbEntry(PRTFSISOCORE pCore, uint8_t const *pbAllocDescs, uint32_t cbAllocDescs, uint32_t fIcbTagFlags, uint32_t idxDefaultPart, uint64_t offAllocDescs, PRTFSISOVOL pVol) { /* * Just in case there are mutiple file entries in the ICB. */ if (pCore->paExtents != NULL) { LogRelMax(45, ("ISO/UDF: Re-reading extents - multiple file entries?\n")); RTMemFree(pCore->paExtents); pCore->paExtents = NULL; } /* * Figure the (minimal) size of an allocation descriptor, deal with the * embedded storage and invalid descriptor types. */ uint32_t cbOneDesc; switch (fIcbTagFlags & UDF_ICB_FLAGS_AD_TYPE_MASK) { case UDF_ICB_FLAGS_AD_TYPE_EMBEDDED: pCore->cExtents = 1; pCore->FirstExtent.cbExtent = cbAllocDescs; pCore->FirstExtent.off = offAllocDescs; pCore->FirstExtent.idxPart = idxDefaultPart; return VINF_SUCCESS; case UDF_ICB_FLAGS_AD_TYPE_SHORT: cbOneDesc = sizeof(UDFSHORTAD); break; case UDF_ICB_FLAGS_AD_TYPE_LONG: cbOneDesc = sizeof(UDFLONGAD); break; case UDF_ICB_FLAGS_AD_TYPE_EXTENDED: cbOneDesc = sizeof(UDFEXTAD); break; default: LogRelMax(45, ("ISO/UDF: Unknown allocation descriptor type %#x\n", fIcbTagFlags)); return VERR_ISO_FS_UNKNOWN_AD_TYPE; } if (cbAllocDescs >= cbOneDesc) { /* * Loop thru the allocation descriptors. */ PRTFSISOEXTENT pCurExtent = NULL; union { uint8_t const *pb; PCUDFSHORTAD pShort; PCUDFLONGAD pLong; PCUDFEXTAD pExt; } uPtr; uPtr.pb = pbAllocDescs; do { /* Extract the information we need from the descriptor. */ uint32_t idxBlock; uint32_t idxPart; uint32_t cb; uint8_t uType; switch (fIcbTagFlags & UDF_ICB_FLAGS_AD_TYPE_MASK) { case UDF_ICB_FLAGS_AD_TYPE_SHORT: uType = uPtr.pShort->uType; cb = uPtr.pShort->cb; idxBlock = uPtr.pShort->off; idxPart = idxDefaultPart; cbAllocDescs -= sizeof(*uPtr.pShort); uPtr.pShort++; break; case UDF_ICB_FLAGS_AD_TYPE_LONG: uType = uPtr.pLong->uType; cb = uPtr.pLong->cb; idxBlock = uPtr.pLong->Location.off; idxPart = uPtr.pLong->Location.uPartitionNo; cbAllocDescs -= sizeof(*uPtr.pLong); uPtr.pLong++; break; case UDF_ICB_FLAGS_AD_TYPE_EXTENDED: if ( uPtr.pExt->cbInformation > cbAllocDescs || uPtr.pExt->cbInformation < sizeof(*uPtr.pExt)) return VERR_ISOFS_BAD_EXTAD; uType = uPtr.pExt->uType; cb = uPtr.pExt->cb; idxBlock = uPtr.pExt->Location.off; idxPart = uPtr.pExt->Location.uPartitionNo; cbAllocDescs -= uPtr.pExt->cbInformation; uPtr.pb += uPtr.pExt->cbInformation; break; default: AssertFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE); } /* Check if we can extend the current extent. This is useful since the descriptors can typically only cover 1GB. */ uint64_t const off = (uint64_t)idxBlock << pVol->Udf.VolInfo.cShiftBlock; if ( pCurExtent != NULL && ( pCurExtent->off != UINT64_MAX ? uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED && pCurExtent->off + pCurExtent->cbExtent == off && pCurExtent->idxPart == idxPart : uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED) ) pCurExtent->cbExtent += cb; else { /* Allocate a new descriptor. */ if (pCore->cExtents == 0) { pCore->cExtents = 1; pCurExtent = &pCore->FirstExtent; } else { void *pvNew = RTMemRealloc(pCore->paExtents, pCore->cExtents * sizeof(pCore->paExtents[0])); if (pvNew) pCore->paExtents = (PRTFSISOEXTENT)pvNew; else { RTMemFree(pCore->paExtents); pCore->paExtents = NULL; pCore->cExtents = 0; return VERR_NO_MEMORY; } pCurExtent = &pCore->paExtents[pCore->cExtents - 1]; pCore->cExtents++; } /* Initialize it. */ if (uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED) { pCurExtent->off = off; pCurExtent->idxPart = idxPart; } else { pCurExtent->off = UINT64_MAX; pCurExtent->idxPart = UINT32_MAX; } pCurExtent->cbExtent = cb; pCurExtent->uReserved = 0; } } while (cbAllocDescs >= cbOneDesc); if (cbAllocDescs > 0) LogRelMax(45,("ISO/UDF: Warning! %u bytes left in allocation descriptor: %.*Rhxs\n", cbAllocDescs, cbAllocDescs, uPtr.pb)); } else { /* * Zero descriptors */ pCore->cExtents = 0; pCore->FirstExtent.off = UINT64_MAX; pCore->FirstExtent.cbExtent = 0; pCore->FirstExtent.idxPart = UINT32_MAX; if (cbAllocDescs > 0) LogRelMax(45, ("ISO/UDF: Warning! Allocation descriptor area is shorted than one descriptor: %#u vs %#u: %.*Rhxs\n", cbAllocDescs, cbOneDesc, cbAllocDescs, pbAllocDescs)); } return VINF_SUCCESS; } /** * Converts ICB flags, ICB file type and file entry permissions to an IPRT file * mode mask. * * @returns IPRT status ocde * @param fIcbTagFlags The ICB flags. * @param bFileType The ICB file type. * @param fPermission The file entry permission mask. * @param pfAttrib Where to return the IRPT file mode mask. */ static int rtFsIsoCore_UdfStuffToFileMode(uint32_t fIcbTagFlags, uint8_t bFileType, uint32_t fPermission, PRTFMODE pfAttrib) { /* * Type: */ RTFMODE fAttrib; switch (bFileType) { case UDF_FILE_TYPE_DIRECTORY: fAttrib = RTFS_TYPE_DIRECTORY | RTFS_DOS_DIRECTORY; break; case UDF_FILE_TYPE_REGULAR_FILE: case UDF_FILE_TYPE_REAL_TIME_FILE: fAttrib = RTFS_TYPE_FILE; break; case UDF_FILE_TYPE_SYMBOLIC_LINK: fAttrib = RTFS_TYPE_SYMLINK; break; case UDF_FILE_TYPE_BLOCK_DEVICE: fAttrib = RTFS_TYPE_DEV_BLOCK; break; case UDF_FILE_TYPE_CHARACTER_DEVICE: fAttrib = RTFS_TYPE_DEV_CHAR; break; case UDF_FILE_TYPE_FIFO: fAttrib = RTFS_TYPE_FIFO; break; case UDF_FILE_TYPE_SOCKET: fAttrib = RTFS_TYPE_SOCKET; break; case UDF_FILE_TYPE_STREAM_DIRECTORY: case UDF_FILE_TYPE_EXTENDED_ATTRIBUTES: case UDF_FILE_TYPE_TERMINAL_ENTRY: case UDF_FILE_TYPE_VAT: case UDF_FILE_TYPE_METADATA_FILE: case UDF_FILE_TYPE_METADATA_MIRROR_FILE: case UDF_FILE_TYPE_METADATA_BITMAP_FILE: case UDF_FILE_TYPE_NOT_SPECIFIED: case UDF_FILE_TYPE_INDIRECT_ENTRY: case UDF_FILE_TYPE_UNALLOCATED_SPACE_ENTRY: case UDF_FILE_TYPE_PARTITION_INTEGRITY_ENTRY: LogRelMax(45, ("ISO/UDF: Warning! Wrong file type: %#x\n", bFileType)); return VERR_ISOFS_WRONG_FILE_TYPE; default: LogRelMax(45, ("ISO/UDF: Warning! Unknown file type: %#x\n", bFileType)); return VERR_ISOFS_UNKNOWN_FILE_TYPE; } /* * Permissions: */ if (fPermission & UDF_PERM_OTH_EXEC) fAttrib |= RTFS_UNIX_IXOTH; if (fPermission & UDF_PERM_OTH_READ) fAttrib |= RTFS_UNIX_IROTH; if (fPermission & UDF_PERM_OTH_WRITE) fAttrib |= RTFS_UNIX_IWOTH; if (fPermission & UDF_PERM_GRP_EXEC) fAttrib |= RTFS_UNIX_IXGRP; if (fPermission & UDF_PERM_GRP_READ) fAttrib |= RTFS_UNIX_IRGRP; if (fPermission & UDF_PERM_GRP_WRITE) fAttrib |= RTFS_UNIX_IWGRP; if (fPermission & UDF_PERM_USR_EXEC) fAttrib |= RTFS_UNIX_IXUSR; if (fPermission & UDF_PERM_USR_READ) fAttrib |= RTFS_UNIX_IRUSR; if (fPermission & UDF_PERM_USR_WRITE) fAttrib |= RTFS_UNIX_IWUSR; if ( !(fAttrib & (UDF_PERM_OTH_WRITE | UDF_PERM_GRP_WRITE | UDF_PERM_USR_WRITE)) && (fAttrib & (UDF_PERM_OTH_READ | UDF_PERM_GRP_READ | UDF_PERM_USR_READ)) ) fAttrib |= RTFS_DOS_READONLY; /* * Attributes: */ if (fIcbTagFlags & UDF_ICB_FLAGS_ARCHIVE) fAttrib |= RTFS_DOS_ARCHIVED; if (fIcbTagFlags & UDF_ICB_FLAGS_SYSTEM) fAttrib |= RTFS_DOS_SYSTEM; if (fIcbTagFlags & UDF_ICB_FLAGS_ARCHIVE) fAttrib |= RTFS_DOS_ARCHIVED; if (fIcbTagFlags & UDF_ICB_FLAGS_SET_UID) fAttrib |= RTFS_UNIX_ISUID; if (fIcbTagFlags & UDF_ICB_FLAGS_SET_GID) fAttrib |= RTFS_UNIX_ISGID; if (fIcbTagFlags & UDF_ICB_FLAGS_STICKY) fAttrib |= RTFS_UNIX_ISTXT; /* Warn about weird flags. */ if (fIcbTagFlags & UDF_ICB_FLAGS_TRANSFORMED) LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_TRANSFORMED!\n")); if (fIcbTagFlags & UDF_ICB_FLAGS_MULTI_VERSIONS) LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_MULTI_VERSIONS!\n")); if (fIcbTagFlags & UDF_ICB_FLAGS_STREAM) LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_STREAM!\n")); if (fIcbTagFlags & UDF_ICB_FLAGS_RESERVED_MASK) LogRelMax(45, ("ISO/UDF: Warning! UDF_ICB_FLAGS_RESERVED_MASK (%#x)!\n", fIcbTagFlags & UDF_ICB_FLAGS_RESERVED_MASK)); *pfAttrib = fAttrib; return VINF_SUCCESS; } /** * Initialize/update a core object structure from an UDF extended file entry. * * @returns IPRT status code * @param pCore The core object structure to initialize. * @param pFileEntry The file entry. * @param idxDefaultPart The default data partition. * @param pcProcessed Variable to increment on success. * @param pVol The volume instance. */ static int rtFsIsoCore_InitFromUdfIcbExFileEntry(PRTFSISOCORE pCore, PCUDFEXFILEENTRY pFileEntry, uint32_t idxDefaultPart, uint32_t *pcProcessed, PRTFSISOVOL pVol) { #ifdef LOG_ENABLED /* * Log it. */ if (LogIs2Enabled()) { UDF_LOG2_MEMBER(pFileEntry, "#010RX32", IcbTag.cEntiresBeforeThis); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.uStrategyType); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[0]); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[1]); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.cMaxEntries); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bReserved); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bFileType); UDF_LOG2_MEMBER_LBADDR(pFileEntry, IcbTag.ParentIcb); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.fFlags); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uid); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", gid); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", fPermissions); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", cHardlinks); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", uRecordFormat); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", fRecordDisplayAttribs); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbRecord); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbData); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbObject); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cLogicalBlocks); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, AccessTime); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ModificationTime); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, BirthTime); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ChangeTime); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uCheckpoint); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uReserved); UDF_LOG2_MEMBER_LONGAD(pFileEntry, ExtAttribIcb); UDF_LOG2_MEMBER_LONGAD(pFileEntry, StreamDirIcb); UDF_LOG2_MEMBER_ENTITY_ID(pFileEntry, idImplementation); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", INodeId); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbExtAttribs); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbAllocDescs); if (pFileEntry->cbExtAttribs > 0) Log2((pFileEntry->cbExtAttribs <= 16 ? "ISO/UDF: %-32s %.*Rhxs\n" : "ISO/UDF: %-32s\n%.*RhxD\n", "abExtAttribs:", pFileEntry->cbExtAttribs, pFileEntry->abExtAttribs)); if (pFileEntry->cbAllocDescs > 0) switch (pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK) { case UDF_ICB_FLAGS_AD_TYPE_SHORT: { PCUDFSHORTAD paDescs = (PCUDFSHORTAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]; uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]); for (uint32_t i = 0; i < cDescs; i++) Log2(("ISO/UDF: ShortAD[%u]: %#010RX32 LB %#010RX32; type=%u\n", i, paDescs[i].off, paDescs[i].cb, paDescs[i].uType)); break; } case UDF_ICB_FLAGS_AD_TYPE_LONG: { PCUDFLONGAD paDescs = (PCUDFLONGAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]; uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]); for (uint32_t i = 0; i < cDescs; i++) Log2(("ISO/UDF: LongAD[%u]: %#06RX16:%#010RX32 LB %#010RX32; type=%u iu=%.6Rhxs\n", i, paDescs[i].Location.uPartitionNo, paDescs[i].Location.off, paDescs[i].cb, paDescs[i].uType, &paDescs[i].ImplementationUse)); break; } default: Log2(("ISO/UDF: %-32s Type=%u\n%.*RhxD\n", "abExtAttribs:", pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK, pFileEntry->cbAllocDescs, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs])); break; } } #endif /* * Basic sanity checking of what we use. */ if ( RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs + pFileEntry->cbAllocDescs > pVol->Udf.VolInfo.cbBlock || (pFileEntry->cbExtAttribs & 3) != 0 || pFileEntry->cbExtAttribs >= pVol->Udf.VolInfo.cbBlock || (pFileEntry->cbAllocDescs & 3) != 0 || pFileEntry->cbAllocDescs >= pVol->Udf.VolInfo.cbBlock) { LogRelMax(45, ("ISO/UDF: Extended file entry (ICB) is bad size values: cbAllocDesc=%#x cbExtAttribs=%#x (cbBlock=%#x)\n", pFileEntry->cbAllocDescs, pFileEntry->cbExtAttribs, pVol->Udf.VolInfo.cbBlock)); return VERR_ISOFS_BAD_FILE_ENTRY; } //pCore->uid = pFileEntry->uid; //pCore->gid = pFileEntry->gid; //pCore->cHardlinks = RT_MIN(pFileEntry->cHardlinks, 1); pCore->cbObject = pFileEntry->cbData; //pCore->cbAllocated = pFileEntry->cLogicalBlocks << pVol->Udf.VolInfo.cShiftBlock; pCore->idINode = pFileEntry->INodeId; rtFsIsoUdfTimestamp2TimeSpec(&pCore->AccessTime, &pFileEntry->AccessTime); rtFsIsoUdfTimestamp2TimeSpec(&pCore->ModificationTime, &pFileEntry->ModificationTime); rtFsIsoUdfTimestamp2TimeSpec(&pCore->BirthTime, &pFileEntry->BirthTime); rtFsIsoUdfTimestamp2TimeSpec(&pCore->ChangeTime, &pFileEntry->ChangeTime); if ( pFileEntry->uRecordFormat || pFileEntry->fRecordDisplayAttribs || pFileEntry->cbRecord) LogRelMax(45, ("ISO/UDF: uRecordFormat=%#x fRecordDisplayAttribs=%#x cbRecord=%#x\n", pFileEntry->uRecordFormat, pFileEntry->fRecordDisplayAttribs, pFileEntry->cbRecord)); /* * Conver the file mode. */ int rc = rtFsIsoCore_UdfStuffToFileMode(pFileEntry->IcbTag.fFlags, pFileEntry->IcbTag.bFileType, pFileEntry->fPermissions, &pCore->fAttrib); if (RT_SUCCESS(rc)) { /* * Convert extent info. */ rc = rtFsIsoCore_InitExtentsUdfIcbEntry(pCore, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs], pFileEntry->cbAllocDescs, pFileEntry->IcbTag.fFlags, idxDefaultPart, ((uint64_t)pFileEntry->Tag.offTag << pVol->Udf.VolInfo.cShiftBlock) + RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs, pVol); if (RT_SUCCESS(rc)) { /* * We're good. */ *pcProcessed += 1; return VINF_SUCCESS; } /* Just in case. */ if (pCore->paExtents) { RTMemFree(pCore->paExtents); pCore->paExtents = NULL; } pCore->cExtents = 0; } return rc; } /** * Initialize/update a core object structure from an UDF file entry. * * @returns IPRT status code * @param pCore The core object structure to initialize. * @param pFileEntry The file entry. * @param idxDefaultPart The default data partition. * @param pcProcessed Variable to increment on success. * @param pVol The volume instance. */ static int rtFsIsoCore_InitFromUdfIcbFileEntry(PRTFSISOCORE pCore, PCUDFFILEENTRY pFileEntry, uint32_t idxDefaultPart, uint32_t *pcProcessed, PRTFSISOVOL pVol) { #ifdef LOG_ENABLED /* * Log it. */ if (LogIs2Enabled()) { UDF_LOG2_MEMBER(pFileEntry, "#010RX32", IcbTag.cEntiresBeforeThis); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.uStrategyType); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[0]); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.abStrategyParams[1]); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.cMaxEntries); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bReserved); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", IcbTag.bFileType); UDF_LOG2_MEMBER_LBADDR(pFileEntry, IcbTag.ParentIcb); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", IcbTag.fFlags); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uid); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", gid); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", fPermissions); UDF_LOG2_MEMBER(pFileEntry, "#06RX16", cHardlinks); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", uRecordFormat); UDF_LOG2_MEMBER(pFileEntry, "#04RX8", fRecordDisplayAttribs); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbRecord); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cbData); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", cLogicalBlocks); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, AccessTime); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ModificationTime); UDF_LOG2_MEMBER_TIMESTAMP(pFileEntry, ChangeTime); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", uCheckpoint); UDF_LOG2_MEMBER_LONGAD(pFileEntry, ExtAttribIcb); UDF_LOG2_MEMBER_ENTITY_ID(pFileEntry, idImplementation); UDF_LOG2_MEMBER(pFileEntry, "#018RX64", INodeId); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbExtAttribs); UDF_LOG2_MEMBER(pFileEntry, "#010RX32", cbAllocDescs); if (pFileEntry->cbExtAttribs > 0) Log2((pFileEntry->cbExtAttribs <= 16 ? "ISO/UDF: %-32s %.*Rhxs\n" : "ISO/UDF: %-32s\n%.*RhxD\n", "abExtAttribs:", pFileEntry->cbExtAttribs, pFileEntry->abExtAttribs)); if (pFileEntry->cbAllocDescs > 0) switch (pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK) { case UDF_ICB_FLAGS_AD_TYPE_SHORT: { PCUDFSHORTAD paDescs = (PCUDFSHORTAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]; uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]); for (uint32_t i = 0; i < cDescs; i++) Log2(("ISO/UDF: ShortAD[%u]: %#010RX32 LB %#010RX32; type=%u\n", i, paDescs[i].off, paDescs[i].cb, paDescs[i].uType)); break; } case UDF_ICB_FLAGS_AD_TYPE_LONG: { PCUDFLONGAD paDescs = (PCUDFLONGAD)&pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs]; uint32_t cDescs = pFileEntry->cbAllocDescs / sizeof(paDescs[0]); for (uint32_t i = 0; i < cDescs; i++) Log2(("ISO/UDF: LongAD[%u]: %#06RX16:%#010RX32 LB %#010RX32; type=%u iu=%.6Rhxs\n", i, paDescs[i].Location.uPartitionNo, paDescs[i].Location.off, paDescs[i].cb, paDescs[i].uType, &paDescs[i].ImplementationUse)); break; } default: Log2(("ISO/UDF: %-32s Type=%u\n%.*RhxD\n", "abExtAttribs:", pFileEntry->IcbTag.fFlags & UDF_ICB_FLAGS_AD_TYPE_MASK, pFileEntry->cbAllocDescs, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs])); break; } } #endif /* * Basic sanity checking of what we use. */ if ( RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs + pFileEntry->cbAllocDescs > pVol->Udf.VolInfo.cbBlock || (pFileEntry->cbExtAttribs & 3) != 0 || pFileEntry->cbExtAttribs >= pVol->Udf.VolInfo.cbBlock || (pFileEntry->cbAllocDescs & 3) != 0 || pFileEntry->cbAllocDescs >= pVol->Udf.VolInfo.cbBlock) { LogRelMax(45, ("ISO/UDF: File entry (ICB) is bad size values: cbAllocDesc=%#x cbExtAttribs=%#x (cbBlock=%#x)\n", pFileEntry->cbAllocDescs, pFileEntry->cbExtAttribs, pVol->Udf.VolInfo.cbBlock)); return VERR_ISOFS_BAD_FILE_ENTRY; } //pCore->uid = pFileEntry->uid; //pCore->gid = pFileEntry->gid; //pCore->cHardlinks = RT_MIN(pFileEntry->cHardlinks, 1); pCore->cbObject = pFileEntry->cbData; //pCore->cbAllocated = pFileEntry->cLogicalBlocks << pVol->Udf.VolInfo.cShiftBlock; pCore->idINode = pFileEntry->INodeId; rtFsIsoUdfTimestamp2TimeSpec(&pCore->AccessTime, &pFileEntry->AccessTime); rtFsIsoUdfTimestamp2TimeSpec(&pCore->ModificationTime, &pFileEntry->ModificationTime); rtFsIsoUdfTimestamp2TimeSpec(&pCore->ChangeTime, &pFileEntry->ChangeTime); pCore->BirthTime = pCore->ModificationTime; if (RTTimeSpecCompare(&pCore->BirthTime, &pCore->ChangeTime) > 0) pCore->BirthTime = pCore->ChangeTime; if (RTTimeSpecCompare(&pCore->BirthTime, &pCore->AccessTime) > 0) pCore->BirthTime = pCore->AccessTime; if ( pFileEntry->uRecordFormat || pFileEntry->fRecordDisplayAttribs || pFileEntry->cbRecord) LogRelMax(45, ("ISO/UDF: uRecordFormat=%#x fRecordDisplayAttribs=%#x cbRecord=%#x\n", pFileEntry->uRecordFormat, pFileEntry->fRecordDisplayAttribs, pFileEntry->cbRecord)); /* * Conver the file mode. */ int rc = rtFsIsoCore_UdfStuffToFileMode(pFileEntry->IcbTag.fFlags, pFileEntry->IcbTag.bFileType, pFileEntry->fPermissions, &pCore->fAttrib); if (RT_SUCCESS(rc)) { /* * Convert extent info. */ rc = rtFsIsoCore_InitExtentsUdfIcbEntry(pCore, &pFileEntry->abExtAttribs[pFileEntry->cbExtAttribs], pFileEntry->cbAllocDescs, pFileEntry->IcbTag.fFlags, idxDefaultPart, ((uint64_t)pFileEntry->Tag.offTag << pVol->Udf.VolInfo.cShiftBlock) + RT_UOFFSETOF(UDFFILEENTRY, abExtAttribs) + pFileEntry->cbExtAttribs, pVol); if (RT_SUCCESS(rc)) { /* * We're good. */ *pcProcessed += 1; return VINF_SUCCESS; } /* Just in case. */ if (pCore->paExtents) { RTMemFree(pCore->paExtents); pCore->paExtents = NULL; } pCore->cExtents = 0; } return rc; } /** * Recursive helper for rtFsIsoCore_InitFromUdfIcbAndFileIdDesc. * * @returns IRPT status code. * @param pCore The core structure to initialize. * @param AllocDesc The ICB allocation descriptor. * @param pbBuf The buffer, one logical block in size. * @param cNestings The number of recursive nestings (should be zero). * @param pcProcessed Variable to update when we've processed something * useful. * @param pcIndirections Variable tracing the number of indirections we've * taken during the processing. This is used to * prevent us from looping forever on a bad chain * @param pVol The volue instance data. */ static int rtFsIsoCore_InitFromUdfIcbRecursive(PRTFSISOCORE pCore, UDFLONGAD AllocDesc, uint8_t *pbBuf, uint32_t cNestings, uint32_t *pcProcessed, uint32_t *pcIndirections, PRTFSISOVOL pVol) { if (cNestings >= 8) return VERR_ISOFS_TOO_DEEP_ICB_RECURSION; for (;;) { if (*pcIndirections >= 32) return VERR_ISOFS_TOO_MANY_ICB_INDIRECTIONS; /* * Check the basic validity of the allocation descriptor. */ if ( AllocDesc.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED && AllocDesc.cb >= sizeof(UDFICBTAG) ) { /* likely */ } else if (AllocDesc.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED) { Log(("ISO/UDF: ICB has alloc type %d!\n", AllocDesc.uType)); return VINF_SUCCESS; } else { LogRelMax(45, ("ISO/UDF: ICB is too small: %u bytes\n", AllocDesc.cb)); return AllocDesc.cb == 0 ? VINF_SUCCESS : VERR_ISOFS_ICB_ENTRY_TOO_SMALL; } /* * Process it block by block. */ uint32_t cBlocks = (AllocDesc.cb + pVol->Udf.VolInfo.cbBlock - 1) >> pVol->Udf.VolInfo.cShiftBlock; for (uint32_t idxBlock = 0; ; idxBlock++) { /* * Read a block */ size_t cbToRead = RT_MIN(pVol->Udf.VolInfo.cbBlock, AllocDesc.cb); int rc = rtFsIsoVolUdfVpRead(pVol, AllocDesc.Location.uPartitionNo, AllocDesc.Location.off + idxBlock, 0, pbBuf, cbToRead); if (RT_FAILURE(rc)) return rc; if (cbToRead < pVol->Udf.VolInfo.cbBlock) RT_BZERO(&pbBuf[cbToRead], pVol->Udf.VolInfo.cbBlock - cbToRead); /* * Verify the TAG. */ PUDFICBHDR pHdr = (PUDFICBHDR)pbBuf; rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pHdr->Tag, pVol->Udf.VolInfo.cbBlock, UINT16_MAX, AllocDesc.Location.off + idxBlock, NULL); if (RT_FAILURE(rc)) return rc; /* * Do specific processing. */ if (pHdr->Tag.idTag == UDF_TAG_ID_FILE_ENTRY) rc = rtFsIsoCore_InitFromUdfIcbFileEntry(pCore, (PCUDFFILEENTRY)pHdr, AllocDesc.Location.uPartitionNo, pcProcessed, pVol); else if (pHdr->Tag.idTag == UDF_TAG_ID_EXTENDED_FILE_ENTRY) rc = rtFsIsoCore_InitFromUdfIcbExFileEntry(pCore, (PCUDFEXFILEENTRY)pHdr, AllocDesc.Location.uPartitionNo, pcProcessed, pVol); else if (pHdr->Tag.idTag == UDF_TAG_ID_INDIRECT_ENTRY) { PUDFINDIRECTENTRY pIndir = (PUDFINDIRECTENTRY)pHdr; *pcIndirections += 1; if (pIndir->IndirectIcb.cb != 0) { if (idxBlock + 1 == cBlocks) { AllocDesc = pIndir->IndirectIcb; Log2(("ISO/UDF: ICB: Indirect entry - looping: %x:%#010RX32 LB %#x; uType=%d\n", AllocDesc.Location.uPartitionNo, AllocDesc.Location.off, AllocDesc.cb, AllocDesc.uType)); break; } Log2(("ISO/UDF: ICB: Indirect entry - recursing: %x:%#010RX32 LB %#x; uType=%d\n", pIndir->IndirectIcb.Location.uPartitionNo, pIndir->IndirectIcb.Location.off, pIndir->IndirectIcb.cb, pIndir->IndirectIcb.uType)); rc = rtFsIsoCore_InitFromUdfIcbRecursive(pCore, pIndir->IndirectIcb, pbBuf, cNestings, pcProcessed, pcIndirections, pVol); } else Log(("ISO/UDF: zero length indirect entry\n")); } else if (pHdr->Tag.idTag == UDF_TAG_ID_TERMINAL_ENTRY) { Log2(("ISO/UDF: Terminal ICB entry\n")); return VINF_SUCCESS; } else if (pHdr->Tag.idTag == UDF_TAG_ID_UNALLOCATED_SPACE_ENTRY) { Log2(("ISO/UDF: Unallocated space entry: skipping\n")); /* Ignore since we don't do writing (UDFUNALLOCATEDSPACEENTRY) */ } else { LogRelMax(90, ("ISO/UDF: Unknown ICB type %#x\n", pHdr->Tag.idTag)); return VERR_ISOFS_UNSUPPORTED_ICB; } if (RT_FAILURE(rc)) return rc; /* * Advance. */ if (idxBlock + 1 >= cBlocks) return VINF_SUCCESS; } /* If we get here, we've jumped thru an indirect entry. */ } /* never reached */ } /** * Initialize a core structure from an UDF ICB range and optionally a file ID. * * @returns IPRT status code. * @param pCore The core structure to initialize. * Caller must've ZEROed this structure! * @param pAllocDesc The ICB allocation descriptor. * @param pFid The file ID descriptor. Optional. * @param offInDir The offset of the file ID descriptor in the * parent directory. This is used when looking up * shared directory objects. (Pass 0 for root.) * @param pVol The instance. * * @note Caller must check for UDF_FILE_FLAGS_DELETED before calling if the * object is supposed to be used for real stuff. */ static int rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(PRTFSISOCORE pCore, PCUDFLONGAD pAllocDesc, PCUDFFILEIDDESC pFid, uintptr_t offInDir, PRTFSISOVOL pVol) { Assert(pCore->cRefs == 0); Assert(pCore->cExtents == 0); Assert(pCore->paExtents == NULL); Assert(pCore->pVol == NULL); /* * Some size sanity checking. */ if (pAllocDesc->cb <= _64K) { if (pAllocDesc->cb >= sizeof(UDFICBHDR)) { /* likely */ } else { Log(("rtFsIsoCore_InitFromUdfIcbAndFileIdDesc: ICB too small: %#04x:%010RX32 LB %#x\n", pAllocDesc->Location.uPartitionNo, pAllocDesc->Location.off, pAllocDesc->cb)); return VERR_ISOFS_ICB_TOO_SMALL; } } else { Log(("rtFsIsoCore_InitFromUdfIcbAndFileIdDesc: ICB too big: %#04x:%010RX32 LB %#x\n", pAllocDesc->Location.uPartitionNo, pAllocDesc->Location.off, pAllocDesc->cb)); return VERR_ISOFS_ICB_TOO_BIG; } /* * Allocate a temporary buffer, one logical block in size. */ uint8_t * const pbBuf = (uint8_t *)RTMemTmpAlloc(pVol->Udf.VolInfo.cbBlock); if (pbBuf) { uint32_t cProcessed = 0; uint32_t cIndirections = 0; int rc = rtFsIsoCore_InitFromUdfIcbRecursive(pCore, *pAllocDesc, pbBuf, 0, &cProcessed, &cIndirections, pVol); RTMemTmpFree(pbBuf); if (RT_SUCCESS(rc)) { if (cProcessed > 0) { if (pFid) { if (pFid->fFlags & UDF_FILE_FLAGS_HIDDEN) pCore->fAttrib |= RTFS_DOS_HIDDEN; if (pFid->fFlags & UDF_FILE_FLAGS_DELETED) pCore->fAttrib = (pCore->fAttrib & ~RTFS_TYPE_MASK) | RTFS_TYPE_WHITEOUT; } pCore->cRefs = 1; pCore->pVol = pVol; pCore->offDirRec = offInDir; return VINF_SUCCESS; } rc = VERR_ISOFS_NO_DIRECT_ICB_ENTRIES; } /* White-out fix. Caller must be checking for UDF_FILE_FLAGS_DELETED */ if ( pFid && (pFid->fFlags & UDF_FILE_FLAGS_DELETED)) { pCore->fAttrib = (pCore->fAttrib & ~RTFS_TYPE_MASK) | RTFS_TYPE_WHITEOUT; return VINF_SUCCESS; } return rc; } pCore->pVol = NULL; return VERR_NO_TMP_MEMORY; } /** * Simple UDF read function. * * This deals with extent mappings as well as virtual partition related block * mapping and such. * * @returns VBox status code. * @param pCore The core object to read data from. * @param offRead The offset to start reading at. * @param pvBuf The output buffer. * @param cbToRead The number of bytes to read. * @param pcbRead Where to return the number of bytes read. * @param poffPosMov Where to return the number of bytes to move the read * position. Optional. (Essentially same as pcbRead * except without the behavior change.) */ static int rtFsIsoCore_ReadWorker(PRTFSISOCORE pCore, uint64_t offRead, void *pvBuf, size_t cbToRead, size_t *pcbRead, size_t *poffPosMov) { /* * Check for EOF. */ if (offRead >= pCore->cbObject) { if (poffPosMov) *poffPosMov = 0; if (pcbRead) { *pcbRead = 0; return VINF_EOF; } return VERR_EOF; } int rcRet = VINF_SUCCESS; if ( cbToRead > pCore->cbObject || offRead + cbToRead > pCore->cbObject) { if (!pcbRead) { if (poffPosMov) *poffPosMov = 0; return VERR_EOF; } cbToRead = pCore->cbObject - offRead; rcRet = VINF_EOF; } uint64_t cbActual = 0; /* * Don't bother looking up the extent if we're not going to * read anything from it. */ if (cbToRead > 0) { /* * Locate the first extent. */ uint64_t offExtent = 0; uint32_t iExtent = 0; PCRTFSISOEXTENT pCurExtent = &pCore->FirstExtent; if (offRead < pCurExtent->cbExtent) { /* likely */ } else do { offExtent += pCurExtent->cbExtent; pCurExtent = &pCore->paExtents[iExtent++]; if (iExtent >= pCore->cExtents) { memset(pvBuf, 0, cbToRead); if (pcbRead) *pcbRead = cbToRead; if (poffPosMov) *poffPosMov = cbToRead; return rcRet; } } while (offExtent < offRead); Assert(offRead - offExtent < pCurExtent->cbExtent); /* * Do the reading part. */ PRTFSISOVOL pVol = pCore->pVol; for (;;) { uint64_t offIntoExtent = offRead - offExtent; size_t cbThisRead = pCurExtent->cbExtent - offIntoExtent; if (cbThisRead > cbToRead) cbThisRead = cbToRead; if (pCurExtent->off == UINT64_MAX) RT_BZERO(pvBuf, cbThisRead); else { int rc2; if (pCurExtent->idxPart == UINT32_MAX) rc2 = RTVfsFileReadAt(pVol->hVfsBacking, pCurExtent->off + offIntoExtent, pvBuf, cbThisRead, NULL); else { Assert(pVol->enmType == RTFSISOVOLTYPE_UDF); if (pCurExtent->idxPart < pVol->Udf.VolInfo.cPartitions) { PRTFSISOVOLUDFPMAP pPart = &pVol->Udf.VolInfo.paPartitions[pCurExtent->idxPart]; switch (pPart->bType) { case RTFSISO_UDF_PMAP_T_PLAIN: rc2 = RTVfsFileReadAt(pVol->hVfsBacking, pPart->offByteLocation + pCurExtent->off + offIntoExtent, pvBuf, cbThisRead, NULL); break; default: AssertFailed(); rc2 = VERR_ISOFS_IPE_1; break; } } else { Log(("ISO/UDF: Invalid partition index %#x (offset %#RX64), max partitions %#x; iExtent=%#x\n", pCurExtent->idxPart, pCurExtent->off + offIntoExtent, pVol->Udf.VolInfo.cPartitions, iExtent)); rc2 = VERR_ISOFS_INVALID_PARTITION_INDEX; } } if (RT_FAILURE(rc2)) { rcRet = rc2; break; } } /* * Advance the buffer position and check if we're done (probable). */ cbActual += cbThisRead; cbToRead -= cbThisRead; if (!cbToRead) break; pvBuf = (uint8_t *)pvBuf + cbThisRead; /* * Advance to the next extent. */ offExtent += pCurExtent->cbExtent; pCurExtent = &pCore->paExtents[iExtent++]; if (iExtent >= pCore->cExtents) { memset(pvBuf, 0, cbToRead); cbActual += cbToRead; break; } } } else Assert(rcRet == VINF_SUCCESS); if (poffPosMov) *poffPosMov = cbActual; if (pcbRead) *pcbRead = cbActual; return rcRet; } /** * Worker for rtFsIsoFile_QueryInfo and rtFsIsoDir_QueryInfo. */ static int rtFsIsoCore_QueryInfo(PRTFSISOCORE pCore, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr) { pObjInfo->cbObject = pCore->cbObject; pObjInfo->cbAllocated = RT_ALIGN_64(pCore->cbObject, pCore->pVol->cbBlock); pObjInfo->AccessTime = pCore->AccessTime; pObjInfo->ModificationTime = pCore->ModificationTime; pObjInfo->ChangeTime = pCore->ChangeTime; pObjInfo->BirthTime = pCore->BirthTime; pObjInfo->Attr.fMode = pCore->fAttrib; pObjInfo->Attr.enmAdditional = enmAddAttr; switch (enmAddAttr) { case RTFSOBJATTRADD_NOTHING: RT_FALL_THRU(); case RTFSOBJATTRADD_UNIX: pObjInfo->Attr.u.Unix.uid = NIL_RTUID; pObjInfo->Attr.u.Unix.gid = NIL_RTGID; pObjInfo->Attr.u.Unix.cHardlinks = 1; pObjInfo->Attr.u.Unix.INodeIdDevice = 0; pObjInfo->Attr.u.Unix.INodeId = pCore->idINode; pObjInfo->Attr.u.Unix.fFlags = 0; pObjInfo->Attr.u.Unix.GenerationId = pCore->uVersion; pObjInfo->Attr.u.Unix.Device = 0; break; case RTFSOBJATTRADD_UNIX_OWNER: pObjInfo->Attr.u.UnixOwner.uid = 0; pObjInfo->Attr.u.UnixOwner.szName[0] = '\0'; break; case RTFSOBJATTRADD_UNIX_GROUP: pObjInfo->Attr.u.UnixGroup.gid = 0; pObjInfo->Attr.u.UnixGroup.szName[0] = '\0'; break; case RTFSOBJATTRADD_EASIZE: pObjInfo->Attr.u.EASize.cb = 0; break; default: return VERR_INVALID_PARAMETER; } if ( pCore->fHaveRockInfo && enmAddAttr != RTFSOBJATTRADD_NOTHING) { /** @todo Read the the rock info for this entry. */ } return VINF_SUCCESS; } /** * Worker for rtFsIsoFile_Close and rtFsIsoDir_Close that does common work. * * @param pCore The common shared structure. */ static void rtFsIsoCore_Destroy(PRTFSISOCORE pCore) { if (pCore->pParentDir) rtFsIsoDirShrd_RemoveOpenChild(pCore->pParentDir, pCore); if (pCore->paExtents) { RTMemFree(pCore->paExtents); pCore->paExtents = NULL; } } /** * @interface_method_impl{RTVFSOBJOPS,pfnClose} */ static DECLCALLBACK(int) rtFsIsoFile_Close(void *pvThis) { PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis; LogFlow(("rtFsIsoFile_Close(%p/%p)\n", pThis, pThis->pShared)); PRTFSISOFILESHRD pShared = pThis->pShared; pThis->pShared = NULL; if (pShared) { if (ASMAtomicDecU32(&pShared->Core.cRefs) == 0) { LogFlow(("rtFsIsoFile_Close: Destroying shared structure %p\n", pShared)); rtFsIsoCore_Destroy(&pShared->Core); RTMemFree(pShared); } } return VINF_SUCCESS; } /** * @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo} */ static DECLCALLBACK(int) rtFsIsoFile_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr) { PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis; return rtFsIsoCore_QueryInfo(&pThis->pShared->Core, pObjInfo, enmAddAttr); } /** * @interface_method_impl{RTVFSIOSTREAMOPS,pfnRead} */ static DECLCALLBACK(int) rtFsIsoFile_Read(void *pvThis, RTFOFF off, PRTSGBUF pSgBuf, bool fBlocking, size_t *pcbRead) { PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis; PRTFSISOFILESHRD pShared = pThis->pShared; AssertReturn(pSgBuf->cSegs == 1, VERR_INTERNAL_ERROR_3); RT_NOREF(fBlocking); #if 1 /* Apply default offset. */ if (off == -1) off = pThis->offFile; else AssertReturn(off >= 0, VERR_INTERNAL_ERROR_3); /* Do the read. */ size_t offDelta = 0; int rc = rtFsIsoCore_ReadWorker(&pShared->Core, off, (uint8_t *)pSgBuf->paSegs[0].pvSeg, pSgBuf->paSegs[0].cbSeg, pcbRead, &offDelta); /* Update the file position and return. */ pThis->offFile = off + offDelta; RTSgBufAdvance(pSgBuf, offDelta); return rc; #else /* * Check for EOF. */ if (off == -1) off = pThis->offFile; if ((uint64_t)off >= pShared->Core.cbObject) { if (pcbRead) { *pcbRead = 0; return VINF_EOF; } return VERR_EOF; } if (pShared->Core.pVol->enmType == RTFSISOVOLTYPE_UDF) { return VERR_ISOFS_UDF_NOT_IMPLEMENTED; } /* * Simple case: File has a single extent. */ int rc = VINF_SUCCESS; size_t cbRead = 0; uint64_t cbFileLeft = pShared->Core.cbObject - (uint64_t)off; size_t cbLeft = pSgBuf->paSegs[0].cbSeg; uint8_t *pbDst = (uint8_t *)pSgBuf->paSegs[0].pvSeg; if (pShared->Core.cExtents == 1) { if (cbLeft > 0) { size_t cbToRead = cbLeft; if (cbToRead > cbFileLeft) cbToRead = (size_t)cbFileLeft; rc = RTVfsFileReadAt(pShared->Core.pVol->hVfsBacking, pShared->Core.FirstExtent.off + off, pbDst, cbToRead, NULL); if (RT_SUCCESS(rc)) { off += cbToRead; pbDst += cbToRead; cbRead += cbToRead; cbFileLeft -= cbToRead; cbLeft -= cbToRead; } } } /* * Complicated case: Work the file content extent by extent. */ else { return VERR_NOT_IMPLEMENTED; /** @todo multi-extent stuff . */ } /* Update the offset and return. */ pThis->offFile = off; if (pcbRead) *pcbRead = cbRead; return VINF_SUCCESS; #endif } /** * @interface_method_impl{RTVFSIOSTREAMOPS,pfnFlush} */ static DECLCALLBACK(int) rtFsIsoFile_Flush(void *pvThis) { RT_NOREF(pvThis); return VINF_SUCCESS; } /** * @interface_method_impl{RTVFSIOSTREAMOPS,pfnPollOne} */ static DECLCALLBACK(int) rtFsIsoFile_PollOne(void *pvThis, uint32_t fEvents, RTMSINTERVAL cMillies, bool fIntr, uint32_t *pfRetEvents) { NOREF(pvThis); int rc; if (fEvents != RTPOLL_EVT_ERROR) { *pfRetEvents = fEvents & ~RTPOLL_EVT_ERROR; rc = VINF_SUCCESS; } else if (fIntr) rc = RTThreadSleep(cMillies); else { uint64_t uMsStart = RTTimeMilliTS(); do rc = RTThreadSleep(cMillies); while ( rc == VERR_INTERRUPTED && !fIntr && RTTimeMilliTS() - uMsStart < cMillies); if (rc == VERR_INTERRUPTED) rc = VERR_TIMEOUT; } return rc; } /** * @interface_method_impl{RTVFSIOSTREAMOPS,pfnTell} */ static DECLCALLBACK(int) rtFsIsoFile_Tell(void *pvThis, PRTFOFF poffActual) { PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis; *poffActual = pThis->offFile; return VINF_SUCCESS; } /** * @interface_method_impl{RTVFSFILEOPS,pfnSeek} */ static DECLCALLBACK(int) rtFsIsoFile_Seek(void *pvThis, RTFOFF offSeek, unsigned uMethod, PRTFOFF poffActual) { PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis; RTFOFF offNew; switch (uMethod) { case RTFILE_SEEK_BEGIN: offNew = offSeek; break; case RTFILE_SEEK_END: offNew = (RTFOFF)pThis->pShared->Core.cbObject + offSeek; break; case RTFILE_SEEK_CURRENT: offNew = (RTFOFF)pThis->offFile + offSeek; break; default: return VERR_INVALID_PARAMETER; } if (offNew >= 0) { pThis->offFile = offNew; *poffActual = offNew; return VINF_SUCCESS; } return VERR_NEGATIVE_SEEK; } /** * @interface_method_impl{RTVFSFILEOPS,pfnQuerySize} */ static DECLCALLBACK(int) rtFsIsoFile_QuerySize(void *pvThis, uint64_t *pcbFile) { PRTFSISOFILEOBJ pThis = (PRTFSISOFILEOBJ)pvThis; *pcbFile = pThis->pShared->Core.cbObject; return VINF_SUCCESS; } /** * ISO FS file operations. */ DECL_HIDDEN_CONST(const RTVFSFILEOPS) g_rtFsIsoFileOps = { { /* Stream */ { /* Obj */ RTVFSOBJOPS_VERSION, RTVFSOBJTYPE_FILE, "FatFile", rtFsIsoFile_Close, rtFsIsoFile_QueryInfo, NULL, RTVFSOBJOPS_VERSION }, RTVFSIOSTREAMOPS_VERSION, RTVFSIOSTREAMOPS_FEAT_NO_SG, rtFsIsoFile_Read, NULL /*Write*/, rtFsIsoFile_Flush, rtFsIsoFile_PollOne, rtFsIsoFile_Tell, NULL /*pfnSkip*/, NULL /*pfnZeroFill*/, RTVFSIOSTREAMOPS_VERSION, }, RTVFSFILEOPS_VERSION, 0, { /* ObjSet */ RTVFSOBJSETOPS_VERSION, RT_UOFFSETOF(RTVFSFILEOPS, ObjSet) - RT_UOFFSETOF(RTVFSFILEOPS, Stream.Obj), NULL /*SetMode*/, NULL /*SetTimes*/, NULL /*SetOwner*/, RTVFSOBJSETOPS_VERSION }, rtFsIsoFile_Seek, rtFsIsoFile_QuerySize, NULL /*SetSize*/, NULL /*QueryMaxSize*/, RTVFSFILEOPS_VERSION }; /** * Instantiates a new file, from ISO 9660 info. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pParentDir The parent directory (shared part). * @param pDirRec The directory record. * @param cDirRecs Number of directory records if more than one. * @param offDirRec The byte offset of the directory record. * @param offEntryInDir The byte offset of the directory entry in the parent * directory. * @param fOpen RTFILE_O_XXX flags. * @param uVersion The file version number (since the caller already * parsed the filename, we don't want to repeat the * effort here). * @param pRockInfo Optional rock ridge info for the file. * @param phVfsFile Where to return the file handle. */ static int rtFsIsoFile_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs, uint64_t offDirRec, uint64_t fOpen, uint32_t uVersion, PCRTFSISOROCKINFO pRockInfo, PRTVFSFILE phVfsFile) { AssertPtr(pParentDir); /* * Create a VFS object. */ PRTFSISOFILEOBJ pNewFile; int rc = RTVfsNewFile(&g_rtFsIsoFileOps, sizeof(*pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /*use volume lock*/, phVfsFile, (void **)&pNewFile); if (RT_SUCCESS(rc)) { /* * Look for existing shared object, create a new one if necessary. */ PRTFSISOFILESHRD pShared = (PRTFSISOFILESHRD)rtFsIsoDir_LookupShared(pParentDir, offDirRec); if (pShared) { LogFlow(("rtFsIsoFile_New9660: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n", pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent)); pNewFile->offFile = 0; pNewFile->pShared = pShared; return VINF_SUCCESS; } pShared = (PRTFSISOFILESHRD)RTMemAllocZ(sizeof(*pShared)); if (pShared) { rc = rtFsIsoCore_InitFrom9660DirRec(&pShared->Core, pDirRec, cDirRecs, offDirRec, uVersion, pRockInfo, pThis); if (RT_SUCCESS(rc)) { rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core); LogFlow(("rtFsIsoFile_New9660: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n", pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent)); pNewFile->offFile = 0; pNewFile->pShared = pShared; return VINF_SUCCESS; } RTMemFree(pShared); } else rc = VERR_NO_MEMORY; /* Destroy the file object. */ pNewFile->offFile = 0; pNewFile->pShared = NULL; RTVfsFileRelease(*phVfsFile); } *phVfsFile = NIL_RTVFSFILE; return rc; } /** * Instantiates a new file, from UDF info. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pParentDir The parent directory (shared part). * @param pFid The file ID descriptor. (Points to parent directory * content.) * @param fOpen RTFILE_O_XXX flags. * @param phVfsFile Where to return the file handle. */ static int rtFsIsoFile_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, uint64_t fOpen, PRTVFSFILE phVfsFile) { AssertPtr(pParentDir); uintptr_t const offInDir = (uintptr_t)pFid - (uintptr_t)pParentDir->pbDir; Assert(offInDir < pParentDir->cbDir); Assert(!(pFid->fFlags & UDF_FILE_FLAGS_DELETED)); Assert(!(pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY)); /* * Create a VFS object. */ PRTFSISOFILEOBJ pNewFile; int rc = RTVfsNewFile(&g_rtFsIsoFileOps, sizeof(*pNewFile), fOpen, pThis->hVfsSelf, NIL_RTVFSLOCK /*use volume lock*/, phVfsFile, (void **)&pNewFile); if (RT_SUCCESS(rc)) { /* * Look for existing shared object. Make sure it's a file. */ PRTFSISOFILESHRD pShared = (PRTFSISOFILESHRD)rtFsIsoDir_LookupShared(pParentDir, offInDir); if (pShared) { if (!RTFS_IS_FILE(pShared->Core.fAttrib)) { LogFlow(("rtFsIsoFile_NewUdf: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n", pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent)); pNewFile->offFile = 0; pNewFile->pShared = pShared; return VINF_SUCCESS; } } /* * Create a shared object for this alleged file. */ else { pShared = (PRTFSISOFILESHRD)RTMemAllocZ(sizeof(*pShared)); if (pShared) { rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&pShared->Core, &pFid->Icb, pFid, offInDir, pThis); if (RT_SUCCESS(rc)) { if (RTFS_IS_FILE(pShared->Core.fAttrib)) { rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core); LogFlow(("rtFsIsoFile_NewUdf: cbObject=%#RX64 First Extent: off=%#RX64 cb=%#RX64\n", pShared->Core.cbObject, pShared->Core.FirstExtent.off, pShared->Core.FirstExtent.cbExtent)); pNewFile->offFile = 0; pNewFile->pShared = pShared; return VINF_SUCCESS; } rtFsIsoCore_Destroy(&pShared->Core); } RTMemFree(pShared); } else rc = VERR_NO_MEMORY; } /* Destroy the file object. */ pNewFile->offFile = 0; pNewFile->pShared = NULL; RTVfsFileRelease(*phVfsFile); } *phVfsFile = NIL_RTVFSFILE; return rc; } /** * Looks up the shared structure for a child. * * @returns Referenced pointer to the shared structure, NULL if not found. * @param pThis The directory. * @param offDirRec The directory record offset of the child. */ static PRTFSISOCORE rtFsIsoDir_LookupShared(PRTFSISODIRSHRD pThis, uint64_t offDirRec) { PRTFSISOCORE pCur; RTListForEach(&pThis->OpenChildren, pCur, RTFSISOCORE, Entry) { if (pCur->offDirRec == offDirRec) { uint32_t cRefs = ASMAtomicIncU32(&pCur->cRefs); Assert(cRefs > 1); RT_NOREF(cRefs); return pCur; } } return NULL; } #ifdef RT_STRICT /** * Checks if @a pNext is an extent of @a pFirst. * * @returns true if @a pNext is the next extent, false if not * @param pFirst The directory record describing the first or the * previous extent. * @param pNext The directory record alleged to be the next extent. */ DECLINLINE(bool) rtFsIsoDir_Is9660DirRecNextExtent(PCISO9660DIRREC pFirst, PCISO9660DIRREC pNext) { if (RT_LIKELY(pNext->bFileIdLength == pFirst->bFileIdLength)) { if (RT_LIKELY((pNext->fFileFlags | ISO9660_FILE_FLAGS_MULTI_EXTENT) == pFirst->fFileFlags)) { if (RT_LIKELY(memcmp(pNext->achFileId, pFirst->achFileId, pNext->bFileIdLength) == 0)) return true; } } return false; } #endif /* RT_STRICT */ /** * Parses rock ridge information if present in the directory entry. * * @param pVol The volume structure. * @param pParseInfo Parse info and output. * @param pbSys The system area of the directory record. * @param cbSys The number of bytes present in the sys area. * @param fIsFirstDirRec Set if this is the '.' directory entry in the * root directory. (Some entries applies only to * it.) * @param fContinuationRecord Set if we're processing a continuation record in * living in the abRockBuf. */ static void rtFsIsoDirShrd_ParseRockRidgeData(PRTFSISOVOL pVol, PRTFSISOROCKINFO pParseInfo, uint8_t const *pbSys, size_t cbSys, bool fIsFirstDirRec, bool fContinuationRecord) { while (cbSys >= 4) { /* * Check header length and advance the sys variables. */ PCISO9660SUSPUNION pUnion = (PCISO9660SUSPUNION)pbSys; if ( pUnion->Hdr.cbEntry > cbSys || pUnion->Hdr.cbEntry < sizeof(pUnion->Hdr)) { Log4(("rtFsIsoDir_ParseRockRidgeData: cbEntry=%#x cbSys=%#x (%#x %#x)\n", pUnion->Hdr.cbEntry, cbSys, pUnion->Hdr.bSig1, pUnion->Hdr.bSig2)); break; } pbSys += pUnion->Hdr.cbEntry; cbSys -= pUnion->Hdr.cbEntry; /* * Process fields. */ uint16_t const uSig = SUSP_MAKE_SIG(pUnion->Hdr.bSig1, pUnion->Hdr.bSig2); switch (uSig) { /* * System use sharing protocol entries. */ case SUSP_MAKE_SIG(ISO9660SUSPCE_SIG1, ISO9660SUSPCE_SIG2): { if (RT_BE2H_U32(pUnion->CE.offBlock.be) != RT_LE2H_U32(pUnion->CE.offBlock.le)) Log4(("rtFsIsoDir_ParseRockRidgeData: Invalid CE offBlock field: be=%#x vs le=%#x\n", RT_BE2H_U32(pUnion->CE.offBlock.be), RT_LE2H_U32(pUnion->CE.offBlock.le))); else if (RT_BE2H_U32(pUnion->CE.cbData.be) != RT_LE2H_U32(pUnion->CE.cbData.le)) Log4(("rtFsIsoDir_ParseRockRidgeData: Invalid CE cbData field: be=%#x vs le=%#x\n", RT_BE2H_U32(pUnion->CE.cbData.be), RT_LE2H_U32(pUnion->CE.cbData.le))); else if (RT_BE2H_U32(pUnion->CE.offData.be) != RT_LE2H_U32(pUnion->CE.offData.le)) Log4(("rtFsIsoDir_ParseRockRidgeData: Invalid CE offData field: be=%#x vs le=%#x\n", RT_BE2H_U32(pUnion->CE.offData.be), RT_LE2H_U32(pUnion->CE.offData.le))); else if (!fContinuationRecord) { uint64_t offData = ISO9660_GET_ENDIAN(&pUnion->CE.offBlock) * (uint64_t)ISO9660_SECTOR_SIZE; offData += ISO9660_GET_ENDIAN(&pUnion->CE.offData); uint32_t cbData = ISO9660_GET_ENDIAN(&pUnion->CE.cbData); if (cbData <= sizeof(pVol->abRockBuf) - (uint32_t)(offData & ISO9660_SECTOR_OFFSET_MASK)) { RTCritSectEnter(&pVol->RockBufLock); AssertCompile(sizeof(pVol->abRockBuf) == ISO9660_SECTOR_SIZE); uint64_t offDataBlock = offData & ~(uint64_t)ISO9660_SECTOR_OFFSET_MASK; if (pVol->offRockBuf == offDataBlock) rtFsIsoDirShrd_ParseRockRidgeData(pVol, pParseInfo, &pVol->abRockBuf[offData & ISO9660_SECTOR_OFFSET_MASK], cbData, fIsFirstDirRec, true /*fContinuationRecord*/); else { int rc = RTVfsFileReadAt(pVol->hVfsBacking, offDataBlock, pVol->abRockBuf, sizeof(pVol->abRockBuf), NULL); if (RT_SUCCESS(rc)) rtFsIsoDirShrd_ParseRockRidgeData(pVol, pParseInfo, &pVol->abRockBuf[offData & ISO9660_SECTOR_OFFSET_MASK], cbData, fIsFirstDirRec, true /*fContinuationRecord*/); else Log4(("rtFsIsoDir_ParseRockRidgeData: Error reading continuation record at %#RX64: %Rrc\n", offDataBlock, rc)); } RTCritSectLeave(&pVol->RockBufLock); } else Log4(("rtFsIsoDir_ParseRockRidgeData: continuation record isn't within a sector! offData=%#RX64 cbData=%#RX32\n", cbData, offData)); } else Log4(("rtFsIsoDir_ParseRockRidgeData: nested continuation record!\n")); break; } case SUSP_MAKE_SIG(ISO9660SUSPSP_SIG1, ISO9660SUSPSP_SIG2): /* SP */ if ( pUnion->Hdr.cbEntry != ISO9660SUSPSP_LEN || pUnion->Hdr.bVersion != ISO9660SUSPSP_VER || pUnion->SP.bCheck1 != ISO9660SUSPSP_CHECK1 || pUnion->SP.bCheck2 != ISO9660SUSPSP_CHECK2 || pUnion->SP.cbSkip > UINT8_MAX - RT_UOFFSETOF(ISO9660DIRREC, achFileId[1])) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SP' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x), bCheck1=%#x (vs %#x), bCheck2=%#x (vs %#x), cbSkip=%#x (vs max %#x)\n", pUnion->Hdr.cbEntry, ISO9660SUSPSP_LEN, pUnion->Hdr.bVersion, ISO9660SUSPSP_VER, pUnion->SP.bCheck1, ISO9660SUSPSP_CHECK1, pUnion->SP.bCheck2, ISO9660SUSPSP_CHECK2, pUnion->SP.cbSkip, UINT8_MAX - RT_UOFFSETOF(ISO9660DIRREC, achFileId[1]) )); else if (!fIsFirstDirRec) Log4(("rtFsIsoDir_ParseRockRidgeData: Ignorining 'SP' entry in non-root directory record\n")); else if (pParseInfo->fSuspSeenSP) Log4(("rtFsIsoDir_ParseRockRidgeData: Ignorining additional 'SP' entry\n")); else { pVol->offSuspSkip = pUnion->SP.cbSkip; if (pUnion->SP.cbSkip != 0) Log4(("rtFsIsoDir_ParseRockRidgeData: SP: cbSkip=%#x\n", pUnion->SP.cbSkip)); } break; case SUSP_MAKE_SIG(ISO9660SUSPER_SIG1, ISO9660SUSPER_SIG2): /* ER */ if ( pUnion->Hdr.cbEntry > RT_UOFFSETOF(ISO9660SUSPER, achPayload) + (uint32_t)pUnion->ER.cchIdentifier + (uint32_t)pUnion->ER.cchDescription + (uint32_t)pUnion->ER.cchSource || pUnion->Hdr.bVersion != ISO9660SUSPER_VER) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'ER' entry: cbEntry=%#x bVersion=%#x (vs %#x) cchIdentifier=%#x cchDescription=%#x cchSource=%#x\n", pUnion->Hdr.cbEntry, pUnion->Hdr.bVersion, ISO9660SUSPER_VER, pUnion->ER.cchIdentifier, pUnion->ER.cchDescription, pUnion->ER.cchSource)); else if (!fIsFirstDirRec) Log4(("rtFsIsoDir_ParseRockRidgeData: Ignorining 'ER' entry in non-root directory record\n")); else if ( pUnion->ER.bVersion == 1 /* RRIP detection */ && ( (pUnion->ER.cchIdentifier >= 4 && strncmp(pUnion->ER.achPayload, ISO9660_RRIP_ID, 4 /*RRIP*/) == 0) || (pUnion->ER.cchIdentifier >= 10 && strncmp(pUnion->ER.achPayload, RT_STR_TUPLE(ISO9660_RRIP_1_12_ID)) == 0) )) { Log4(("rtFsIsoDir_ParseRockRidgeData: Rock Ridge 'ER' entry: v%u id='%.*s' desc='%.*s' source='%.*s'\n", pUnion->ER.bVersion, pUnion->ER.cchIdentifier, pUnion->ER.achPayload, pUnion->ER.cchDescription, &pUnion->ER.achPayload[pUnion->ER.cchIdentifier], pUnion->ER.cchSource, &pUnion->ER.achPayload[pUnion->ER.cchIdentifier + pUnion->ER.cchDescription])); pVol->fHaveRock = true; pParseInfo->cRockEntries++; } else Log4(("rtFsIsoDir_ParseRockRidgeData: Unknown extension in 'ER' entry: v%u id='%.*s' desc='%.*s' source='%.*s'\n", pUnion->ER.bVersion, pUnion->ER.cchIdentifier, pUnion->ER.achPayload, pUnion->ER.cchDescription, &pUnion->ER.achPayload[pUnion->ER.cchIdentifier], pUnion->ER.cchSource, &pUnion->ER.achPayload[pUnion->ER.cchIdentifier + pUnion->ER.cchDescription])); break; case SUSP_MAKE_SIG(ISO9660SUSPPD_SIG1, ISO9660SUSPPD_SIG2): /* PD - ignored */ case SUSP_MAKE_SIG(ISO9660SUSPST_SIG1, ISO9660SUSPST_SIG2): /* ST - ignore for now */ case SUSP_MAKE_SIG(ISO9660SUSPES_SIG1, ISO9660SUSPES_SIG2): /* ES - ignore for now */ break; /* * Rock ridge interchange protocol entries. */ case SUSP_MAKE_SIG(ISO9660RRIPRR_SIG1, ISO9660RRIPRR_SIG2): /* RR */ if ( pUnion->RR.Hdr.cbEntry != ISO9660RRIPRR_LEN || pUnion->RR.Hdr.bVersion != ISO9660RRIPRR_VER) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'RR' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x) fFlags=%#x\n", pUnion->RR.Hdr.cbEntry, ISO9660RRIPRR_LEN, pUnion->RR.Hdr.bVersion, ISO9660RRIPRR_VER, pUnion->RR.fFlags)); else pParseInfo->cRockEntries++; /* otherwise ignored */ break; case SUSP_MAKE_SIG(ISO9660RRIPPX_SIG1, ISO9660RRIPPX_SIG2): /* PX */ if ( ( pUnion->PX.Hdr.cbEntry != ISO9660RRIPPX_LEN && pUnion->PX.Hdr.cbEntry != ISO9660RRIPPX_LEN_NO_INODE) || pUnion->PX.Hdr.bVersion != ISO9660RRIPPX_VER || RT_BE2H_U32(pUnion->PX.fMode.be) != RT_LE2H_U32(pUnion->PX.fMode.le) || RT_BE2H_U32(pUnion->PX.cHardlinks.be) != RT_LE2H_U32(pUnion->PX.cHardlinks.le) || RT_BE2H_U32(pUnion->PX.uid.be) != RT_LE2H_U32(pUnion->PX.uid.le) || RT_BE2H_U32(pUnion->PX.gid.be) != RT_LE2H_U32(pUnion->PX.gid.le) || ( pUnion->PX.Hdr.cbEntry == ISO9660RRIPPX_LEN && RT_BE2H_U32(pUnion->PX.INode.be) != RT_LE2H_U32(pUnion->PX.INode.le)) ) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'PX' entry: cbEntry=%#x (vs %#x or %#x), bVersion=%#x (vs %#x) fMode=%#x/%#x cHardlinks=%#x/%#x uid=%#x/%#x gid=%#x/%#x inode=%#x/%#x\n", pUnion->PX.Hdr.cbEntry, ISO9660RRIPPX_LEN, ISO9660RRIPPX_LEN_NO_INODE, pUnion->PX.Hdr.bVersion, ISO9660RRIPPX_VER, RT_BE2H_U32(pUnion->PX.fMode.be), RT_LE2H_U32(pUnion->PX.fMode.le), RT_BE2H_U32(pUnion->PX.cHardlinks.be), RT_LE2H_U32(pUnion->PX.cHardlinks.le), RT_BE2H_U32(pUnion->PX.uid.be), RT_LE2H_U32(pUnion->PX.uid.le), RT_BE2H_U32(pUnion->PX.gid.be), RT_LE2H_U32(pUnion->PX.gid.le), pUnion->PX.Hdr.cbEntry == ISO9660RRIPPX_LEN ? RT_BE2H_U32(pUnion->PX.INode.be) : 0, pUnion->PX.Hdr.cbEntry == ISO9660RRIPPX_LEN ? RT_LE2H_U32(pUnion->PX.INode.le) : 0 )); else { if ( RTFS_IS_DIRECTORY(ISO9660_GET_ENDIAN(&pUnion->PX.fMode)) == RTFS_IS_DIRECTORY(pParseInfo->Info.Attr.fMode)) pParseInfo->Info.Attr.fMode = ISO9660_GET_ENDIAN(&pUnion->PX.fMode); else Log4(("rtFsIsoDir_ParseRockRidgeData: 'PX' entry changes directory-ness: fMode=%#x, existing %#x; ignored\n", ISO9660_GET_ENDIAN(&pUnion->PX.fMode), pParseInfo->Info.Attr.fMode)); pParseInfo->Info.Attr.u.Unix.cHardlinks = ISO9660_GET_ENDIAN(&pUnion->PX.cHardlinks); pParseInfo->Info.Attr.u.Unix.uid = ISO9660_GET_ENDIAN(&pUnion->PX.uid); pParseInfo->Info.Attr.u.Unix.gid = ISO9660_GET_ENDIAN(&pUnion->PX.gid); /* ignore inode */ pParseInfo->cRockEntries++; } break; case SUSP_MAKE_SIG(ISO9660RRIPPN_SIG1, ISO9660RRIPPN_SIG2): /* PN */ if ( pUnion->PN.Hdr.cbEntry != ISO9660RRIPPN_LEN || pUnion->PN.Hdr.bVersion != ISO9660RRIPPN_VER || RT_BE2H_U32(pUnion->PN.Major.be) != RT_LE2H_U32(pUnion->PN.Major.le) || RT_BE2H_U32(pUnion->PN.Minor.be) != RT_LE2H_U32(pUnion->PN.Minor.le)) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'PN' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x) Major=%#x/%#x Minor=%#x/%#x\n", pUnion->PN.Hdr.cbEntry, ISO9660RRIPPN_LEN, pUnion->PN.Hdr.bVersion, ISO9660RRIPPN_VER, RT_BE2H_U32(pUnion->PN.Major.be), RT_LE2H_U32(pUnion->PN.Major.le), RT_BE2H_U32(pUnion->PN.Minor.be), RT_LE2H_U32(pUnion->PN.Minor.le) )); else if (RTFS_IS_DIRECTORY(pParseInfo->Info.Attr.fMode)) Log4(("rtFsIsoDir_ParseRockRidgeData: Ignorning 'PN' entry for directory (%#x/%#x)\n", ISO9660_GET_ENDIAN(&pUnion->PN.Major), ISO9660_GET_ENDIAN(&pUnion->PN.Minor) )); else { pParseInfo->Info.Attr.u.Unix.Device = RTDEV_MAKE(ISO9660_GET_ENDIAN(&pUnion->PN.Major), ISO9660_GET_ENDIAN(&pUnion->PN.Minor)); pParseInfo->cRockEntries++; } break; case SUSP_MAKE_SIG(ISO9660RRIPTF_SIG1, ISO9660RRIPTF_SIG2): /* TF */ if ( pUnion->TF.Hdr.bVersion != ISO9660RRIPTF_VER || pUnion->TF.Hdr.cbEntry < Iso9660RripTfCalcLength(pUnion->TF.fFlags)) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'TF' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x) fFlags=%#x\n", pUnion->TF.Hdr.cbEntry, Iso9660RripTfCalcLength(pUnion->TF.fFlags), pUnion->TF.Hdr.bVersion, ISO9660RRIPTF_VER, RT_BE2H_U32(pUnion->TF.fFlags) )); else if (!(pUnion->TF.fFlags & ISO9660RRIPTF_F_LONG_FORM)) { PCISO9660RECTIMESTAMP pTimestamp = (PCISO9660RECTIMESTAMP)&pUnion->TF.abPayload[0]; if (pUnion->TF.fFlags & ISO9660RRIPTF_F_BIRTH) { rtFsIso9660DateTime2TimeSpec(&pParseInfo->Info.BirthTime, pTimestamp); pTimestamp++; } if (pUnion->TF.fFlags & ISO9660RRIPTF_F_MODIFY) { rtFsIso9660DateTime2TimeSpec(&pParseInfo->Info.ModificationTime, pTimestamp); pTimestamp++; } if (pUnion->TF.fFlags & ISO9660RRIPTF_F_ACCESS) { rtFsIso9660DateTime2TimeSpec(&pParseInfo->Info.AccessTime, pTimestamp); pTimestamp++; } if (pUnion->TF.fFlags & ISO9660RRIPTF_F_CHANGE) { rtFsIso9660DateTime2TimeSpec(&pParseInfo->Info.ChangeTime, pTimestamp); pTimestamp++; } pParseInfo->cRockEntries++; } else { PCISO9660TIMESTAMP pTimestamp = (PCISO9660TIMESTAMP)&pUnion->TF.abPayload[0]; if (pUnion->TF.fFlags & ISO9660RRIPTF_F_BIRTH) { rtFsIso9660DateTime2TimeSpecIfValid(&pParseInfo->Info.BirthTime, pTimestamp); pTimestamp++; } if (pUnion->TF.fFlags & ISO9660RRIPTF_F_MODIFY) { rtFsIso9660DateTime2TimeSpecIfValid(&pParseInfo->Info.ModificationTime, pTimestamp); pTimestamp++; } if (pUnion->TF.fFlags & ISO9660RRIPTF_F_ACCESS) { rtFsIso9660DateTime2TimeSpecIfValid(&pParseInfo->Info.AccessTime, pTimestamp); pTimestamp++; } if (pUnion->TF.fFlags & ISO9660RRIPTF_F_CHANGE) { rtFsIso9660DateTime2TimeSpecIfValid(&pParseInfo->Info.ChangeTime, pTimestamp); pTimestamp++; } pParseInfo->cRockEntries++; } break; case SUSP_MAKE_SIG(ISO9660RRIPSF_SIG1, ISO9660RRIPSF_SIG2): /* SF */ Log4(("rtFsIsoDir_ParseRockRidgeData: Sparse file support not yet implemented!\n")); break; case SUSP_MAKE_SIG(ISO9660RRIPSL_SIG1, ISO9660RRIPSL_SIG2): /* SL */ if ( pUnion->SL.Hdr.bVersion != ISO9660RRIPSL_VER || pUnion->SL.Hdr.cbEntry < RT_UOFFSETOF(ISO9660RRIPSL, abComponents[2]) || (pUnion->SL.fFlags & ~ISO9660RRIP_SL_F_CONTINUE) || (pUnion->SL.abComponents[0] & ISO9660RRIP_SL_C_RESERVED_MASK) ) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SL' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x) fFlags=%#x comp[0].fFlags=%#x\n", pUnion->SL.Hdr.cbEntry, RT_UOFFSETOF(ISO9660RRIPSL, abComponents[2]), pUnion->SL.Hdr.bVersion, ISO9660RRIPSL_VER, pUnion->SL.fFlags, pUnion->SL.abComponents[0])); else if (pParseInfo->fSeenLastSL) Log4(("rtFsIsoDir_ParseRockRidgeData: Unexpected 'SL!' entry\n")); else { pParseInfo->cRockEntries++; pParseInfo->fSeenLastSL = !(pUnion->SL.fFlags & ISO9660RRIP_SL_F_CONTINUE); /* used in loop */ size_t offDst = pParseInfo->cchLinkTarget; uint8_t const *pbSrc = &pUnion->SL.abComponents[0]; uint8_t cbSrcLeft = pUnion->SL.Hdr.cbEntry - RT_UOFFSETOF(ISO9660RRIPSL, abComponents); while (cbSrcLeft >= 2) { uint8_t const fFlags = pbSrc[0]; uint8_t cchCopy = pbSrc[1]; uint8_t const cbSkip = cchCopy + 2; if (cbSkip > cbSrcLeft) { Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SL' component: component flags=%#x, component length+2=%#x vs %#x left\n", fFlags, cbSkip, cbSrcLeft)); break; } const char *pszCopy; switch (fFlags & ~ISO9660RRIP_SL_C_CONTINUE) { case 0: pszCopy = (const char *)&pbSrc[2]; break; case ISO9660RRIP_SL_C_CURRENT: if (cchCopy != 0) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SL' component: CURRENT + %u bytes, ignoring bytes\n", cchCopy)); pszCopy = "."; cchCopy = 1; break; case ISO9660RRIP_SL_C_PARENT: if (cchCopy != 0) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SL' component: PARENT + %u bytes, ignoring bytes\n", cchCopy)); pszCopy = ".."; cchCopy = 2; break; case ISO9660RRIP_SL_C_ROOT: if (cchCopy != 0) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SL' component: ROOT + %u bytes, ignoring bytes\n", cchCopy)); pszCopy = "/"; cchCopy = 1; break; default: Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'SL' component: component flags=%#x (bad), component length=%#x vs %#x left\n", fFlags, cchCopy, cbSrcLeft)); pszCopy = NULL; cchCopy = 0; break; } if (offDst + cchCopy < sizeof(pParseInfo->szLinkTarget)) { memcpy(&pParseInfo->szLinkTarget[offDst], pszCopy, cchCopy); offDst += cchCopy; } else { Log4(("rtFsIsoDir_ParseRockRidgeData: 'SL' constructs a too long target! '%.*s%.*s'\n", offDst, pParseInfo->szLinkTarget, cchCopy, pszCopy)); memcpy(&pParseInfo->szLinkTarget[offDst], pszCopy, sizeof(pParseInfo->szLinkTarget) - offDst - 1); offDst = sizeof(pParseInfo->szLinkTarget) - 1; pParseInfo->fOverflowSL = true; break; } /* Advance */ pbSrc += cbSkip; cbSrcLeft -= cbSkip; /* Append slash if appropriate. */ if ( !(fFlags & ISO9660RRIP_SL_C_CONTINUE) && (cbSrcLeft >= 2 || !pParseInfo->fSeenLastSL) ) { if (offDst + 1 < sizeof(pParseInfo->szLinkTarget)) pParseInfo->szLinkTarget[offDst++] = '/'; else { Log4(("rtFsIsoDir_ParseRockRidgeData: 'SL' constructs a too long target! '%.*s/'\n", offDst, pParseInfo->szLinkTarget)); pParseInfo->fOverflowSL = true; break; } } } Assert(offDst < sizeof(pParseInfo->szLinkTarget)); pParseInfo->szLinkTarget[offDst] = '\0'; pParseInfo->cchLinkTarget = (uint16_t)offDst; } break; case SUSP_MAKE_SIG(ISO9660RRIPNM_SIG1, ISO9660RRIPNM_SIG2): /* NM */ if ( pUnion->NM.Hdr.bVersion != ISO9660RRIPNM_VER || pUnion->NM.Hdr.cbEntry < RT_UOFFSETOF(ISO9660RRIPNM, achName) || (pUnion->NM.fFlags & ISO9660RRIP_NM_F_RESERVED_MASK) ) Log4(("rtFsIsoDir_ParseRockRidgeData: Malformed 'NM' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x) fFlags=%#x %.*Rhxs\n", pUnion->NM.Hdr.cbEntry, RT_UOFFSETOF(ISO9660RRIPNM, achName), pUnion->NM.Hdr.bVersion, ISO9660RRIPNM_VER, pUnion->NM.fFlags, pUnion->NM.Hdr.cbEntry - RT_MIN(pUnion->NM.Hdr.cbEntry, RT_UOFFSETOF(ISO9660RRIPNM, achName)), &pUnion->NM.achName[0] )); else if (pParseInfo->fSeenLastNM) Log4(("rtFsIsoDir_ParseRockRidgeData: Unexpected 'NM' entry!\n")); else { pParseInfo->cRockEntries++; pParseInfo->fSeenLastNM = !(pUnion->NM.fFlags & ISO9660RRIP_NM_F_CONTINUE); uint8_t const cchName = pUnion->NM.Hdr.cbEntry - (uint8_t)RT_UOFFSETOF(ISO9660RRIPNM, achName); if (pUnion->NM.fFlags & (ISO9660RRIP_NM_F_CURRENT | ISO9660RRIP_NM_F_PARENT)) { if (cchName == 0 && pParseInfo->szName[0] == '\0') Log4(("rtFsIsoDir_ParseRockRidgeData: Ignoring 'NM' entry for '.' and '..'\n")); else Log4(("rtFsIsoDir_ParseRockRidgeData: Ignoring malformed 'NM' using '.' or '..': fFlags=%#x cchName=%#x %.*Rhxs; szRockNameBuf='%s'\n", pUnion->NM.fFlags, cchName, cchName, pUnion->NM.achName, pParseInfo->szName)); pParseInfo->szName[0] = '\0'; pParseInfo->cchName = 0; pParseInfo->fSeenLastNM = true; } else { size_t offDst = pParseInfo->cchName; if (offDst + cchName < sizeof(pParseInfo->szName)) { memcpy(&pParseInfo->szName[offDst], pUnion->NM.achName, cchName); offDst += cchName; pParseInfo->szName[offDst] = '\0'; pParseInfo->cchName = (uint16_t)offDst; } else { Log4(("rtFsIsoDir_ParseRockRidgeData: 'NM' constructs a too long name, ignoring it all: '%s%.*s'\n", pParseInfo->szName, cchName, pUnion->NM.achName)); pParseInfo->szName[0] = '\0'; pParseInfo->cchName = 0; pParseInfo->fSeenLastNM = true; } } } break; case SUSP_MAKE_SIG(ISO9660RRIPCL_SIG1, ISO9660RRIPCL_SIG2): /* CL - just warn for now. */ case SUSP_MAKE_SIG(ISO9660RRIPPL_SIG1, ISO9660RRIPPL_SIG2): /* PL - just warn for now. */ case SUSP_MAKE_SIG(ISO9660RRIPRE_SIG1, ISO9660RRIPRE_SIG2): /* RE - just warn for now. */ Log4(("rtFsIsoDir_ParseRockRidgeData: Ignorning directory relocation entry '%c%c'!\n", pUnion->Hdr.bSig1, pUnion->Hdr.bSig2)); break; default: Log4(("rtFsIsoDir_ParseRockRidgeData: Unknown SUSP entry: %#x %#x, %#x bytes, v%u\n", pUnion->Hdr.bSig1, pUnion->Hdr.bSig2, pUnion->Hdr.cbEntry, pUnion->Hdr.bVersion)); break; } } /* * Set the valid flag if we found anything of interest. */ if (pParseInfo->cRockEntries > 1) pParseInfo->fValid = true; } /** * Initializes the rock info structure with info from the standard ISO-9660 * directory record. * * @param pRockInfo The structure to initialize. * @param pDirRec The directory record to take basic data from. */ static void rtFsIsoDirShrd_InitRockInfo(PRTFSISOROCKINFO pRockInfo, PCISO9660DIRREC pDirRec) { pRockInfo->fValid = false; pRockInfo->fSuspSeenSP = false; pRockInfo->fSeenLastNM = false; pRockInfo->fSeenLastSL = false; pRockInfo->fOverflowSL = false; pRockInfo->cRockEntries = 0; pRockInfo->cchName = 0; pRockInfo->cchLinkTarget = 0; pRockInfo->szName[0] = '\0'; pRockInfo->szName[sizeof(pRockInfo->szName) - 1] = '\0'; pRockInfo->szLinkTarget[0] = '\0'; pRockInfo->szLinkTarget[sizeof(pRockInfo->szLinkTarget) - 1] = '\0'; pRockInfo->Info.cbObject = ISO9660_GET_ENDIAN(&pDirRec->cbData); pRockInfo->Info.cbAllocated = pRockInfo->Info.cbObject; rtFsIso9660DateTime2TimeSpec(&pRockInfo->Info.AccessTime, &pDirRec->RecTime); pRockInfo->Info.ModificationTime = pRockInfo->Info.AccessTime; pRockInfo->Info.ChangeTime = pRockInfo->Info.AccessTime; pRockInfo->Info.BirthTime = pRockInfo->Info.AccessTime; pRockInfo->Info.Attr.fMode = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY ? RTFS_TYPE_DIRECTORY | RTFS_DOS_DIRECTORY | 0555 : RTFS_TYPE_FILE | RTFS_DOS_ARCHIVED | 0444; if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_HIDDEN) pRockInfo->Info.Attr.fMode |= RTFS_DOS_HIDDEN; pRockInfo->Info.Attr.enmAdditional = RTFSOBJATTRADD_UNIX; pRockInfo->Info.Attr.u.Unix.uid = NIL_RTUID; pRockInfo->Info.Attr.u.Unix.gid = NIL_RTGID; pRockInfo->Info.Attr.u.Unix.cHardlinks = 1; pRockInfo->Info.Attr.u.Unix.INodeIdDevice = 0; pRockInfo->Info.Attr.u.Unix.INodeId = 0; pRockInfo->Info.Attr.u.Unix.fFlags = 0; pRockInfo->Info.Attr.u.Unix.GenerationId = 0; pRockInfo->Info.Attr.u.Unix.Device = 0; } static void rtFsIsoDirShrd_ParseRockForDirRec(PRTFSISODIRSHRD pThis, PCISO9660DIRREC pDirRec, PRTFSISOROCKINFO pRockInfo) { rtFsIsoDirShrd_InitRockInfo(pRockInfo, pDirRec); /* Always! */ PRTFSISOVOL const pVol = pThis->Core.pVol; uint8_t cbSys = pDirRec->cbDirRec - RT_UOFFSETOF(ISO9660DIRREC, achFileId) - pDirRec->bFileIdLength - !(pDirRec->bFileIdLength & 1); uint8_t const *pbSys = (uint8_t const *)&pDirRec->achFileId[pDirRec->bFileIdLength + !(pDirRec->bFileIdLength & 1)]; if (cbSys >= 4 + pVol->offSuspSkip) { pbSys += pVol->offSuspSkip; cbSys -= pVol->offSuspSkip; rtFsIsoDirShrd_ParseRockRidgeData(pVol, pRockInfo, pbSys, cbSys, false /*fIsFirstDirRec*/, false /*fContinuationRecord*/); } } static void rtFsIsoDirShrd_ParseRockForRoot(PRTFSISODIRSHRD pThis, PCISO9660DIRREC pDirRec) { uint8_t const cbSys = pDirRec->cbDirRec - RT_UOFFSETOF(ISO9660DIRREC, achFileId) - pDirRec->bFileIdLength - !(pDirRec->bFileIdLength & 1); uint8_t const * const pbSys = (uint8_t const *)&pDirRec->achFileId[pDirRec->bFileIdLength + !(pDirRec->bFileIdLength & 1)]; if (cbSys >= 4) { RTFSISOROCKINFO RockInfo; rtFsIsoDirShrd_InitRockInfo(&RockInfo, pDirRec); rtFsIsoDirShrd_ParseRockRidgeData(pThis->Core.pVol, &RockInfo, pbSys, cbSys, true /*fIsFirstDirRec*/, false /*fContinuationRecord*/); if (RockInfo.fValid) { pThis->Core.fHaveRockInfo = true; pThis->Core.BirthTime = RockInfo.Info.BirthTime; pThis->Core.ChangeTime = RockInfo.Info.ChangeTime; pThis->Core.AccessTime = RockInfo.Info.AccessTime; pThis->Core.ModificationTime = RockInfo.Info.ModificationTime; if (RTFS_IS_DIRECTORY(RockInfo.Info.Attr.fMode)) pThis->Core.fAttrib = RockInfo.Info.Attr.fMode; } } } /** * Compares rock ridge information if present in the directory entry. * * @param pThis The shared directory structure. * @param pbSys The system area of the directory record. * @param cbSys The number of bytes present in the sys area. * @param pNameCmp The name comparsion data. * @param fContinuationRecord Set if we're processing a continuation record in * living in the abRockBuf. */ static int rtFsIsoDirShrd_CompareRockRidgeName(PRTFSISODIRSHRD pThis, uint8_t const *pbSys, size_t cbSys, PRTFSISOROCKNAMECOMP pNameCmp, bool fContinuationRecord) { PRTFSISOVOL const pVol = pThis->Core.pVol; /* * Do skipping if specified. */ if (pVol->offSuspSkip) { if (cbSys <= pVol->offSuspSkip) return fContinuationRecord ? VERR_MORE_DATA : VERR_MISMATCH; pbSys += pVol->offSuspSkip; cbSys -= pVol->offSuspSkip; } while (cbSys >= 4) { /* * Check header length and advance the sys variables. */ PCISO9660SUSPUNION pUnion = (PCISO9660SUSPUNION)pbSys; if ( pUnion->Hdr.cbEntry > cbSys && pUnion->Hdr.cbEntry < sizeof(pUnion->Hdr)) { Log4(("rtFsIsoDirShrd_CompareRockRidgeName: cbEntry=%#x cbSys=%#x (%#x %#x)\n", pUnion->Hdr.cbEntry, cbSys, pUnion->Hdr.bSig1, pUnion->Hdr.bSig2)); break; } pbSys += pUnion->Hdr.cbEntry; cbSys -= pUnion->Hdr.cbEntry; /* * Process the fields we need, nothing else. */ uint16_t const uSig = SUSP_MAKE_SIG(pUnion->Hdr.bSig1, pUnion->Hdr.bSig2); /* * CE - continuation entry */ if (uSig == SUSP_MAKE_SIG(ISO9660SUSPCE_SIG1, ISO9660SUSPCE_SIG2)) { if (RT_BE2H_U32(pUnion->CE.offBlock.be) != RT_LE2H_U32(pUnion->CE.offBlock.le)) Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Invalid CE offBlock field: be=%#x vs le=%#x\n", RT_BE2H_U32(pUnion->CE.offBlock.be), RT_LE2H_U32(pUnion->CE.offBlock.le))); else if (RT_BE2H_U32(pUnion->CE.cbData.be) != RT_LE2H_U32(pUnion->CE.cbData.le)) Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Invalid CE cbData field: be=%#x vs le=%#x\n", RT_BE2H_U32(pUnion->CE.cbData.be), RT_LE2H_U32(pUnion->CE.cbData.le))); else if (RT_BE2H_U32(pUnion->CE.offData.be) != RT_LE2H_U32(pUnion->CE.offData.le)) Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Invalid CE offData field: be=%#x vs le=%#x\n", RT_BE2H_U32(pUnion->CE.offData.be), RT_LE2H_U32(pUnion->CE.offData.le))); else if (!fContinuationRecord) { uint64_t offData = ISO9660_GET_ENDIAN(&pUnion->CE.offBlock) * (uint64_t)ISO9660_SECTOR_SIZE; offData += ISO9660_GET_ENDIAN(&pUnion->CE.offData); uint32_t cbData = ISO9660_GET_ENDIAN(&pUnion->CE.cbData); if (cbData <= sizeof(pVol->abRockBuf) - (uint32_t)(offData & ISO9660_SECTOR_OFFSET_MASK)) { RTCritSectEnter(&pVol->RockBufLock); AssertCompile(sizeof(pVol->abRockBuf) == ISO9660_SECTOR_SIZE); uint64_t offDataBlock = offData & ~(uint64_t)ISO9660_SECTOR_OFFSET_MASK; int rc; if (pVol->offRockBuf == offDataBlock) rc = rtFsIsoDirShrd_CompareRockRidgeName(pThis, &pVol->abRockBuf[offData & ISO9660_SECTOR_OFFSET_MASK], cbData, pNameCmp, true /*fContinuationRecord*/); else { rc = RTVfsFileReadAt(pVol->hVfsBacking, offDataBlock, pVol->abRockBuf, sizeof(pVol->abRockBuf), NULL); if (RT_SUCCESS(rc)) rc = rtFsIsoDirShrd_CompareRockRidgeName(pThis, &pVol->abRockBuf[offData & ISO9660_SECTOR_OFFSET_MASK], cbData, pNameCmp, true /*fContinuationRecord*/); else Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Error reading continuation record at %#RX64: %Rrc\n", offDataBlock, rc)); } RTCritSectLeave(&pVol->RockBufLock); if (rc != VERR_MORE_DATA) return rc; } else Log4(("rtFsIsoDirShrd_CompareRockRidgeName: continuation record isn't within a sector! offData=%#RX64 cbData=%#RX32\n", cbData, offData)); } else Log4(("rtFsIsoDirShrd_CompareRockRidgeName: nested continuation record!\n")); } /* * NM - Name entry. * * The character set is supposed to be limited to the portable filename * character set defined in section 2.2.2.60 of POSIX.1: A-Za-z0-9._- * If there are any other characters used, we consider them as UTF-8 * for reasons of simplicitiy, however we do not make any effort dealing * with codepoint encodings across NM records for now because it is * probably a complete waste of time. */ else if (uSig == SUSP_MAKE_SIG(ISO9660RRIPNM_SIG1, ISO9660RRIPNM_SIG2)) { if ( pUnion->NM.Hdr.bVersion != ISO9660RRIPNM_VER || pUnion->NM.Hdr.cbEntry < RT_UOFFSETOF(ISO9660RRIPNM, achName) || (pUnion->NM.fFlags & ISO9660RRIP_NM_F_RESERVED_MASK) ) Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Malformed 'NM' entry: cbEntry=%#x (vs %#x), bVersion=%#x (vs %#x) fFlags=%#x %.*Rhxs\n", pUnion->NM.Hdr.cbEntry, RT_UOFFSETOF(ISO9660RRIPNM, achName), pUnion->NM.Hdr.bVersion, ISO9660RRIPNM_VER, pUnion->NM.fFlags, pUnion->NM.Hdr.cbEntry - RT_MIN(pUnion->NM.Hdr.cbEntry, RT_UOFFSETOF(ISO9660RRIPNM, achName)), &pUnion->NM.achName[0] )); else { uint8_t const cchName = pUnion->NM.Hdr.cbEntry - (uint8_t)RT_UOFFSETOF(ISO9660RRIPNM, achName); if (!(pUnion->NM.fFlags & (ISO9660RRIP_NM_F_CURRENT | ISO9660RRIP_NM_F_PARENT))) { /* likely */ } else { if (cchName == 0) Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Ignoring 'NM' entry for '.' and '..'\n")); else Log4(("rtFsIsoDirShrd_CompareRockRidgeName: Ignoring malformed 'NM' using '.' or '..': fFlags=%#x cchName=%#x %.*Rhxs\n", pUnion->NM.fFlags, cchName, cchName, pUnion->NM.achName)); pNameCmp->offMatched = ~(size_t)0 / 2; return VERR_MISMATCH; } Log4(("rtFsIsoDirShrd_CompareRockRidgeName: 'NM': fFlags=%#x cchName=%#x '%.*s' (%.*Rhxs); offMatched=%#zx cchEntry=%#zx\n", pUnion->NM.fFlags, cchName, cchName, pUnion->NM.achName, cchName, pUnion->NM.achName, pNameCmp->offMatched, pNameCmp->cchEntry)); AssertReturn(pNameCmp->offMatched < pNameCmp->cchEntry, VERR_MISMATCH); if (RTStrNICmp(&pNameCmp->pszEntry[pNameCmp->offMatched], pUnion->NM.achName, cchName) == 0) { /** @todo Incorrectly ASSUMES all upper and lower codepoints have the same * encoding length. However, since this shouldn't be UTF-8, but plain * limited ASCII that's not really all that important. */ pNameCmp->offMatched += cchName; if (!(pUnion->NM.fFlags & ISO9660RRIP_NM_F_CONTINUE)) { if (pNameCmp->offMatched >= pNameCmp->cchEntry) { Log4(("rtFsIsoDirShrd_CompareRockRidgeName: 'NM': returning VINF_SUCCESS\n")); return VINF_SUCCESS; } Log4(("rtFsIsoDirShrd_CompareRockRidgeName: 'NM': returning VERR_MISMATCH - %zu unmatched bytes\n", pNameCmp->cchEntry - pNameCmp->offMatched)); return VERR_MISMATCH; } if (pNameCmp->offMatched >= pNameCmp->cchEntry) { Log4(("rtFsIsoDirShrd_CompareRockRidgeName: 'NM': returning VERR_MISMATCH - match full name but ISO9660RRIP_NM_F_CONTINUE is set!\n")); return VERR_MISMATCH; } } else { Log4(("rtFsIsoDirShrd_CompareRockRidgeName: 'NM': returning VERR_MISMATCH - mismatch\n")); pNameCmp->offMatched = ~(size_t)0 / 2; return VERR_MISMATCH; } } } } return fContinuationRecord ? VERR_MORE_DATA : VERR_MISMATCH; } /** * Worker for rtFsIsoDir_FindEntry9660 that compares a name with the rock ridge * info in the directory record, if present. * * @returns true if equal, false if not. * @param pThis The directory. * @param pDirRec The directory record. * @param pszEntry The string to compare with. * @param cbEntry The length of @a pszEntry including terminator. */ static bool rtFsIsoDir_IsEntryEqualRock(PRTFSISODIRSHRD pThis, PCISO9660DIRREC pDirRec, const char *pszEntry, size_t cbEntry) { /* * Is there room for any rock ridge data? */ uint8_t const cbSys = pDirRec->cbDirRec - RT_UOFFSETOF(ISO9660DIRREC, achFileId) - pDirRec->bFileIdLength - !(pDirRec->bFileIdLength & 1); uint8_t const * const pbSys = (uint8_t const *)&pDirRec->achFileId[pDirRec->bFileIdLength + !(pDirRec->bFileIdLength & 1)]; if (cbSys >= 4) { RTFSISOROCKNAMECOMP NameCmp; NameCmp.pszEntry = pszEntry; NameCmp.cchEntry = cbEntry - 1; NameCmp.offMatched = 0; int rc = rtFsIsoDirShrd_CompareRockRidgeName(pThis, pbSys, cbSys, &NameCmp, false /*fContinuationRecord*/); if (rc == VINF_SUCCESS) return true; } return false; } /** * Worker for rtFsIsoDir_FindEntry9660 that compares a UTF-16BE name with a * directory record. * * @returns true if equal, false if not. * @param pDirRec The directory record. * @param pwszEntry The UTF-16BE string to compare with. * @param cbEntry The compare string length in bytes (sans zero * terminator). * @param cwcEntry The compare string length in RTUTF16 units. * @param puVersion Where to return any file version number. */ DECL_FORCE_INLINE(bool) rtFsIsoDir_IsEntryEqualUtf16Big(PCISO9660DIRREC pDirRec, PCRTUTF16 pwszEntry, size_t cbEntry, size_t cwcEntry, uint32_t *puVersion) { /* ASSUME directories cannot have any version tags. */ if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY) { if (RT_LIKELY(pDirRec->bFileIdLength != cbEntry)) return false; if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0)) return false; } else { size_t cbNameDelta = (size_t)pDirRec->bFileIdLength - cbEntry; if (RT_LIKELY(cbNameDelta > (size_t)12 /* ;12345 */)) return false; if (cbNameDelta == 0) { if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0)) return false; *puVersion = 1; } else { if (RT_LIKELY(RT_MAKE_U16(pDirRec->achFileId[cbEntry + 1], pDirRec->achFileId[cbEntry]) != ';')) return false; if (RT_LIKELY(RTUtf16BigNICmp((PCRTUTF16)pDirRec->achFileId, pwszEntry, cwcEntry) != 0)) return false; uint32_t uVersion; size_t cwcVersion = rtFsIso9660GetVersionLengthUtf16Big((PCRTUTF16)pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion); if (RT_LIKELY(cwcVersion * sizeof(RTUTF16) == cbNameDelta)) *puVersion = uVersion; else return false; } } /* (No need to check for dot and dot-dot here, because cbEntry must be a multiple of two.) */ Assert(!(cbEntry & 1)); return true; } /** * Worker for rtFsIsoDir_FindEntry9660 that compares an ASCII name with a * directory record. * * @returns true if equal, false if not. * @param pDirRec The directory record. * @param pszEntry The uppercased ASCII string to compare with. * @param cchEntry The length of the compare string. * @param puVersion Where to return any file version number. * * @note We're using RTStrNICmpAscii here because of non-conforming ISOs with * entirely lowercase name or mixed cased names. */ DECL_FORCE_INLINE(bool) rtFsIsoDir_IsEntryEqualAscii(PCISO9660DIRREC pDirRec, const char *pszEntry, size_t cchEntry, uint32_t *puVersion) { /* ASSUME directories cannot have any version tags. */ if (pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY) { if (RT_LIKELY(pDirRec->bFileIdLength != cchEntry)) return false; if (RT_LIKELY(RTStrNICmpAscii(pDirRec->achFileId, pszEntry, cchEntry) != 0)) return false; } else { size_t cchNameDelta = (size_t)pDirRec->bFileIdLength - cchEntry; if (RT_LIKELY(cchNameDelta > (size_t)6 /* ;12345 */)) return false; if (cchNameDelta == 0) { if (RT_LIKELY(RTStrNICmpAscii(pDirRec->achFileId, pszEntry, cchEntry) != 0)) return false; *puVersion = 1; } else { if (RT_LIKELY(pDirRec->achFileId[cchEntry] != ';')) return false; if (RT_LIKELY(RTStrNICmpAscii(pDirRec->achFileId, pszEntry, cchEntry) != 0)) return false; uint32_t uVersion; size_t cchVersion = rtFsIso9660GetVersionLengthAscii(pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion); if (RT_LIKELY(cchVersion == cchNameDelta)) *puVersion = uVersion; else return false; } } /* Don't match the 'dot' and 'dot-dot' directory records. */ if (RT_LIKELY( pDirRec->bFileIdLength != 1 || (uint8_t)pDirRec->achFileId[0] > (uint8_t)0x01)) return true; return false; } /** * Locates a directory entry in a directory. * * @returns IPRT status code. * @retval VERR_FILE_NOT_FOUND if not found. * @param pThis The directory to search. * @param pszEntry The entry to look for. * @param poffDirRec Where to return the offset of the directory record * on the disk. * @param ppDirRec Where to return the pointer to the directory record * (the whole directory is buffered). * @param pcDirRecs Where to return the number of directory records * related to this entry. * @param pfMode Where to return the file type, rock ridge adjusted. * @param puVersion Where to return the file version number. * @param pRockInfo Where to return rock ridge info. This is NULL if * the volume didn't advertise any rock ridge info. */ static int rtFsIsoDir_FindEntry9660(PRTFSISODIRSHRD pThis, const char *pszEntry, uint64_t *poffDirRec, PCISO9660DIRREC *ppDirRec, uint32_t *pcDirRecs, PRTFMODE pfMode, uint32_t *puVersion, PRTFSISOROCKINFO pRockInfo) { Assert(pThis->Core.pVol->enmType != RTFSISOVOLTYPE_UDF); /* Set return values. */ *poffDirRec = UINT64_MAX; *ppDirRec = NULL; *pcDirRecs = 1; *pfMode = UINT32_MAX; *puVersion = 0; if (pRockInfo) pRockInfo->fValid = false; /* * If we're in UTF-16BE mode, convert the input name to UTF-16BE. Otherwise try * uppercase it into a ISO 9660 compliant name. */ int rc; bool const fIsUtf16 = pThis->Core.pVol->fIsUtf16; size_t cwcEntry = 0; size_t cbEntry = 0; size_t cchUpper = ~(size_t)0; union { RTUTF16 wszEntry[260 + 1]; struct { char szUpper[255 + 1]; char szRock[260 + 1]; } s; } uBuf; if (fIsUtf16) { PRTUTF16 pwszEntry = uBuf.wszEntry; rc = RTStrToUtf16BigEx(pszEntry, RTSTR_MAX, &pwszEntry, RT_ELEMENTS(uBuf.wszEntry), &cwcEntry); if (RT_FAILURE(rc)) return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc; cbEntry = cwcEntry * 2; } else { rc = RTStrCopy(uBuf.s.szUpper, sizeof(uBuf.s.szUpper), pszEntry); if (RT_FAILURE(rc)) return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc; RTStrToUpper(uBuf.s.szUpper); cchUpper = strlen(uBuf.s.szUpper); cbEntry = strlen(pszEntry) + 1; } /* * Scan the directory buffer by buffer. */ uint32_t offEntryInDir = 0; uint32_t const cbDir = pThis->Core.cbObject; while (offEntryInDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= cbDir) { PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir]; /* If null length, skip to the next sector. */ if (pDirRec->cbDirRec == 0) offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U); else { /* * Try match the filename. */ /** @todo not sure if it's a great idea to match both name spaces... */ if (RT_LIKELY( fIsUtf16 ? !rtFsIsoDir_IsEntryEqualUtf16Big(pDirRec, uBuf.wszEntry, cbEntry, cwcEntry, puVersion) && ( !pRockInfo || !rtFsIsoDir_IsEntryEqualRock(pThis, pDirRec, pszEntry, cbEntry)) : ( !pRockInfo || !rtFsIsoDir_IsEntryEqualRock(pThis, pDirRec, pszEntry, cbEntry)) && !rtFsIsoDir_IsEntryEqualAscii(pDirRec, uBuf.s.szUpper, cchUpper, puVersion) )) { /* Advance */ offEntryInDir += pDirRec->cbDirRec; continue; } /* * Get info for the entry. */ if (!pRockInfo) *pfMode = pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY ? 0755 | RTFS_TYPE_DIRECTORY | RTFS_DOS_DIRECTORY : 0644 | RTFS_TYPE_FILE; else { rtFsIsoDirShrd_ParseRockForDirRec(pThis, pDirRec, pRockInfo); *pfMode = pRockInfo->Info.Attr.fMode; } *poffDirRec = pThis->Core.FirstExtent.off + offEntryInDir; *ppDirRec = pDirRec; /* * Deal with the unlikely scenario of multi extent records. */ if (!(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)) *pcDirRecs = 1; else { offEntryInDir += pDirRec->cbDirRec; uint32_t cDirRecs = 1; while (offEntryInDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= cbDir) { PCISO9660DIRREC pDirRec2 = (PCISO9660DIRREC)&pThis->pbDir[offEntryInDir]; if (pDirRec2->cbDirRec != 0) { Assert(rtFsIsoDir_Is9660DirRecNextExtent(pDirRec, pDirRec2)); cDirRecs++; if (!(pDirRec2->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)) break; offEntryInDir += pDirRec2->cbDirRec; } else offEntryInDir = (offEntryInDir + pThis->Core.pVol->cbSector) & ~(pThis->Core.pVol->cbSector - 1U); } *pcDirRecs = cDirRecs; } return VINF_SUCCESS; } } return VERR_FILE_NOT_FOUND; } /** * Locates a directory entry in a directory. * * @returns IPRT status code. * @retval VERR_FILE_NOT_FOUND if not found. * @param pThis The directory to search. * @param pszEntry The entry to look for. * @param ppFid Where to return the pointer to the file ID entry. * (Points to the directory content.) */ static int rtFsIsoDir_FindEntryUdf(PRTFSISODIRSHRD pThis, const char *pszEntry, PCUDFFILEIDDESC *ppFid) { Assert(pThis->Core.pVol->enmType == RTFSISOVOLTYPE_UDF); *ppFid = NULL; /* * Recode the entry name as 8-bit (if possible) and 16-bit strings. * This also disposes of entries that definitely are too long. */ size_t cb8Bit; bool fSimple; size_t cb16Bit; size_t cwc16Bit; uint8_t ab8Bit[255]; RTUTF16 wsz16Bit[255]; /* 16-bit */ PRTUTF16 pwsz16Bit = wsz16Bit; int rc = RTStrToUtf16BigEx(pszEntry, RTSTR_MAX, &pwsz16Bit, RT_ELEMENTS(wsz16Bit), &cwc16Bit); if (RT_SUCCESS(rc)) cb16Bit = 1 + cwc16Bit * sizeof(RTUTF16); else return rc == VERR_BUFFER_OVERFLOW ? VERR_FILENAME_TOO_LONG : rc; /* 8-bit (can't possibly overflow) */ fSimple = true; cb8Bit = 0; const char *pszSrc = pszEntry; for (;;) { RTUNICP uc; int rc2 = RTStrGetCpEx(&pszSrc, &uc); AssertRCReturn(rc2, rc2); if (uc <= 0x7f) { if (uc) ab8Bit[cb8Bit++] = (uint8_t)uc; else break; } else if (uc <= 0xff) { ab8Bit[cb8Bit++] = (uint8_t)uc; fSimple = false; } else { cb8Bit = UINT32_MAX / 2; break; } } Assert(cb8Bit <= sizeof(ab8Bit) || cb8Bit == UINT32_MAX / 2); cb8Bit++; /* * Scan the directory content. */ uint32_t offDesc = 0; uint32_t const cbDir = pThis->Core.cbObject; while (offDesc + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) <= cbDir) { PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pThis->pbDir[offDesc]; uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid); if ( offDesc + cbFid <= cbDir && pFid->Tag.idTag == UDF_TAG_ID_FILE_ID_DESC) { /* likely */ } else break; uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid); if (*pbName == 16) { if (cb16Bit == pFid->cbName) { if (RTUtf16BigNICmp((PCRTUTF16)(&pbName[1]), wsz16Bit, cwc16Bit) == 0) { *ppFid = pFid; return VINF_SUCCESS; } } } else if (*pbName == 8) { if ( cb8Bit == pFid->cbName && cb8Bit != UINT16_MAX) { if (fSimple) { if (RTStrNICmp((const char *)&pbName[1], (const char *)ab8Bit, cb8Bit - 1) == 0) { *ppFid = pFid; return VINF_SUCCESS; } } else { size_t cch = cb8Bit - 1; size_t off; for (off = 0; off < cch; off++) { RTUNICP uc1 = ab8Bit[off]; RTUNICP uc2 = pbName[off + 1]; if ( uc1 == uc2 || RTUniCpToLower(uc1) == RTUniCpToLower(uc2) || RTUniCpToUpper(uc1) == RTUniCpToUpper(uc2)) { /* matches */ } else break; } if (off == cch) { *ppFid = pFid; return VINF_SUCCESS; } } } } /* advance */ offDesc += cbFid; } return VERR_FILE_NOT_FOUND; } /** * Releases a reference to a shared directory structure. * * @param pShared The shared directory structure. */ static void rtFsIsoDirShrd_Release(PRTFSISODIRSHRD pShared) { uint32_t cRefs = ASMAtomicDecU32(&pShared->Core.cRefs); Assert(cRefs < UINT32_MAX / 2); if (cRefs == 0) { LogFlow(("rtFsIsoDirShrd_Release: Destroying shared structure %p\n", pShared)); Assert(pShared->Core.cRefs == 0); if (pShared->pbDir) { RTMemFree(pShared->pbDir); pShared->pbDir = NULL; } rtFsIsoCore_Destroy(&pShared->Core); RTMemFree(pShared); } } /** * Retains a reference to a shared directory structure. * * @param pShared The shared directory structure. */ static void rtFsIsoDirShrd_Retain(PRTFSISODIRSHRD pShared) { uint32_t cRefs = ASMAtomicIncU32(&pShared->Core.cRefs); Assert(cRefs > 1); NOREF(cRefs); } /** * @interface_method_impl{RTVFSOBJOPS,pfnClose} */ static DECLCALLBACK(int) rtFsIsoDir_Close(void *pvThis) { PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis; LogFlow(("rtFsIsoDir_Close(%p/%p)\n", pThis, pThis->pShared)); PRTFSISODIRSHRD pShared = pThis->pShared; pThis->pShared = NULL; if (pShared) rtFsIsoDirShrd_Release(pShared); return VINF_SUCCESS; } /** * @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo} */ static DECLCALLBACK(int) rtFsIsoDir_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr) { PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis; return rtFsIsoCore_QueryInfo(&pThis->pShared->Core, pObjInfo, enmAddAttr); } /** * @interface_method_impl{RTVFSDIROPS,pfnOpen} */ static DECLCALLBACK(int) rtFsIsoDir_Open(void *pvThis, const char *pszEntry, uint64_t fOpen, uint32_t fFlags, PRTVFSOBJ phVfsObj) { PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis; PRTFSISODIRSHRD pShared = pThis->pShared; int rc; /* * We cannot create or replace anything, just open stuff. */ if ( (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_OPEN || (fOpen & RTFILE_O_ACTION_MASK) == RTFILE_O_OPEN_CREATE) { /* likely */ } else return VERR_WRITE_PROTECT; /* * Special cases '.' and '..' */ if (pszEntry[0] == '.') { PRTFSISODIRSHRD pSharedToOpen; if (pszEntry[1] == '\0') pSharedToOpen = pShared; else if (pszEntry[1] == '.' && pszEntry[2] == '\0') { pSharedToOpen = pShared->Core.pParentDir; if (!pSharedToOpen) pSharedToOpen = pShared; } else pSharedToOpen = NULL; if (pSharedToOpen) { if (fFlags & RTVFSOBJ_F_OPEN_DIRECTORY) { rtFsIsoDirShrd_Retain(pSharedToOpen); RTVFSDIR hVfsDir; rc = rtFsIsoDir_NewWithShared(pShared->Core.pVol, pSharedToOpen, &hVfsDir); if (RT_SUCCESS(rc)) { *phVfsObj = RTVfsObjFromDir(hVfsDir); RTVfsDirRelease(hVfsDir); AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3); } } else rc = VERR_IS_A_DIRECTORY; return rc; } } /* * Try open whatever it is. */ if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF) { /* * ISO 9660 */ PCISO9660DIRREC pDirRec; uint64_t offDirRec; uint32_t cDirRecs; RTFMODE fMode; uint32_t uVersion; PRTFSISOROCKINFO pRockInfo = NULL; if (pShared->Core.pVol->fHaveRock) pRockInfo = (PRTFSISOROCKINFO)alloca(sizeof(*pRockInfo)); rc = rtFsIsoDir_FindEntry9660(pShared, pszEntry, &offDirRec, &pDirRec, &cDirRecs, &fMode, &uVersion, pRockInfo); Log2(("rtFsIsoDir_Open: FindEntry9660(,%s,) -> %Rrc\n", pszEntry, rc)); if (RT_SUCCESS(rc)) { switch (fMode & RTFS_TYPE_MASK) { case RTFS_TYPE_FILE: if (fFlags & RTVFSOBJ_F_OPEN_FILE) { RTVFSFILE hVfsFile; rc = rtFsIsoFile_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs, offDirRec, fOpen, uVersion, pRockInfo && pRockInfo->fValid ? pRockInfo : NULL, &hVfsFile); if (RT_SUCCESS(rc)) { *phVfsObj = RTVfsObjFromFile(hVfsFile); RTVfsFileRelease(hVfsFile); AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3); } } else rc = VERR_IS_A_FILE; break; case RTFS_TYPE_DIRECTORY: if (fFlags & RTVFSOBJ_F_OPEN_DIRECTORY) { RTVFSDIR hVfsDir; rc = rtFsIsoDir_New9660(pShared->Core.pVol, pShared, pDirRec, cDirRecs, offDirRec, pRockInfo && pRockInfo->fValid ? pRockInfo : NULL, &hVfsDir); if (RT_SUCCESS(rc)) { *phVfsObj = RTVfsObjFromDir(hVfsDir); RTVfsDirRelease(hVfsDir); AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3); } } else rc = VERR_IS_A_DIRECTORY; break; case RTFS_TYPE_SYMLINK: case RTFS_TYPE_DEV_BLOCK: case RTFS_TYPE_DEV_CHAR: case RTFS_TYPE_FIFO: case RTFS_TYPE_SOCKET: case RTFS_TYPE_WHITEOUT: rc = VERR_NOT_IMPLEMENTED; break; default: rc = VERR_PATH_NOT_FOUND; break; } } } else { /* * UDF */ PCUDFFILEIDDESC pFid; rc = rtFsIsoDir_FindEntryUdf(pShared, pszEntry, &pFid); Log2(("rtFsIsoDir_Open: FindEntryUdf(,%s,) -> %Rrc\n", pszEntry, rc)); if (RT_SUCCESS(rc)) { if (!(pFid->fFlags & UDF_FILE_FLAGS_DELETED)) { if (!(pFid->fFlags & UDF_FILE_FLAGS_DIRECTORY)) { if (fFlags & RTVFSOBJ_F_OPEN_FILE) { RTVFSFILE hVfsFile; rc = rtFsIsoFile_NewUdf(pShared->Core.pVol, pShared, pFid, fOpen, &hVfsFile); if (RT_SUCCESS(rc)) { *phVfsObj = RTVfsObjFromFile(hVfsFile); RTVfsFileRelease(hVfsFile); AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3); } } else rc = VERR_IS_A_FILE; } else { if (fFlags & RTVFSOBJ_F_OPEN_DIRECTORY) { RTVFSDIR hVfsDir; rc = rtFsIsoDir_NewUdf(pShared->Core.pVol, pShared, pFid, &hVfsDir); if (RT_SUCCESS(rc)) { *phVfsObj = RTVfsObjFromDir(hVfsDir); RTVfsDirRelease(hVfsDir); AssertStmt(*phVfsObj != NIL_RTVFSOBJ, rc = VERR_INTERNAL_ERROR_3); } } else rc = VERR_IS_A_DIRECTORY; } } /* We treat UDF_FILE_FLAGS_DELETED like RTFS_TYPE_WHITEOUT for now. */ else rc = VERR_PATH_NOT_FOUND; } } return rc; } /** * @interface_method_impl{RTVFSDIROPS,pfnCreateDir} */ static DECLCALLBACK(int) rtFsIsoDir_CreateDir(void *pvThis, const char *pszSubDir, RTFMODE fMode, PRTVFSDIR phVfsDir) { RT_NOREF(pvThis, pszSubDir, fMode, phVfsDir); return VERR_WRITE_PROTECT; } /** * @interface_method_impl{RTVFSDIROPS,pfnOpenSymlink} */ static DECLCALLBACK(int) rtFsIsoDir_OpenSymlink(void *pvThis, const char *pszSymlink, PRTVFSSYMLINK phVfsSymlink) { RT_NOREF(pvThis, pszSymlink, phVfsSymlink); return VERR_NOT_SUPPORTED; } /** * @interface_method_impl{RTVFSDIROPS,pfnCreateSymlink} */ static DECLCALLBACK(int) rtFsIsoDir_CreateSymlink(void *pvThis, const char *pszSymlink, const char *pszTarget, RTSYMLINKTYPE enmType, PRTVFSSYMLINK phVfsSymlink) { RT_NOREF(pvThis, pszSymlink, pszTarget, enmType, phVfsSymlink); return VERR_WRITE_PROTECT; } /** * @interface_method_impl{RTVFSDIROPS,pfnUnlinkEntry} */ static DECLCALLBACK(int) rtFsIsoDir_UnlinkEntry(void *pvThis, const char *pszEntry, RTFMODE fType) { RT_NOREF(pvThis, pszEntry, fType); return VERR_WRITE_PROTECT; } /** * @interface_method_impl{RTVFSDIROPS,pfnRenameEntry} */ static DECLCALLBACK(int) rtFsIsoDir_RenameEntry(void *pvThis, const char *pszEntry, RTFMODE fType, const char *pszNewName) { RT_NOREF(pvThis, pszEntry, fType, pszNewName); return VERR_WRITE_PROTECT; } /** * @interface_method_impl{RTVFSDIROPS,pfnRewindDir} */ static DECLCALLBACK(int) rtFsIsoDir_RewindDir(void *pvThis) { PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis; pThis->offDir = 0; return VINF_SUCCESS; } /** * The ISO 9660 worker for rtFsIsoDir_ReadDir */ static int rtFsIsoDir_ReadDir9660(PRTFSISODIROBJ pThis, PRTFSISODIRSHRD pShared, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry, RTFSOBJATTRADD enmAddAttr) { PRTFSISOROCKINFO pRockInfo = NULL; if (pShared->Core.pVol->fHaveRock) pRockInfo = (PRTFSISOROCKINFO)alloca(sizeof(*pRockInfo)); while (pThis->offDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= pShared->cbDir) { PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pShared->pbDir[pThis->offDir]; /* If null length, skip to the next sector. */ if (pDirRec->cbDirRec == 0) pThis->offDir = (pThis->offDir + pShared->Core.pVol->cbSector) & ~(pShared->Core.pVol->cbSector - 1U); else { /* * Do names first as they may cause overflows. */ uint32_t uVersion = 0; if ( pDirRec->bFileIdLength == 1 && pDirRec->achFileId[0] == '\0') { if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2) { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2; Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW (dot)\n")); return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = 1; pDirEntry->szName[0] = '.'; pDirEntry->szName[1] = '\0'; } else if ( pDirRec->bFileIdLength == 1 && pDirRec->achFileId[0] == '\1') { if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 3) { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 3; Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW (dot-dot)\n")); return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = 2; pDirEntry->szName[0] = '.'; pDirEntry->szName[1] = '.'; pDirEntry->szName[2] = '\0'; } else if (pShared->Core.pVol->fIsUtf16) { PCRTUTF16 pawcSrc = (PCRTUTF16)&pDirRec->achFileId[0]; size_t cwcSrc = pDirRec->bFileIdLength / sizeof(RTUTF16); size_t cwcVer = !(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY) ? rtFsIso9660GetVersionLengthUtf16Big(pawcSrc, cwcSrc, &uVersion) : 0; size_t cchNeeded = 0; size_t cbDst = *pcbDirEntry - RT_UOFFSETOF(RTDIRENTRYEX, szName); char *pszDst = pDirEntry->szName; int rc = RTUtf16BigToUtf8Ex(pawcSrc, cwcSrc - cwcVer, &pszDst, cbDst, &cchNeeded); if (RT_SUCCESS(rc)) pDirEntry->cbName = (uint16_t)cchNeeded; else if (rc == VERR_BUFFER_OVERFLOW) { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchNeeded + 1; Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cchNeeded=%zu (UTF-16BE)\n", cbDst, cchNeeded)); return VERR_BUFFER_OVERFLOW; } else { ssize_t cchNeeded2 = RTStrPrintf2(pszDst, cbDst, "bad-name-%#x", pThis->offDir); if (cchNeeded2 >= 0) pDirEntry->cbName = (uint16_t)cchNeeded2; else { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + (size_t)-cchNeeded2; return VERR_BUFFER_OVERFLOW; } } } else { /* This is supposed to be upper case ASCII, however, purge the encoding anyway. */ size_t cchVer = !(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY) ? rtFsIso9660GetVersionLengthAscii(pDirRec->achFileId, pDirRec->bFileIdLength, &uVersion) : 0; size_t cchName = pDirRec->bFileIdLength - cchVer; size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchName + 1; if (*pcbDirEntry < cbNeeded) { Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (ASCII)\n", *pcbDirEntry, cbNeeded)); *pcbDirEntry = cbNeeded; return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = (uint16_t)cchName; memcpy(pDirEntry->szName, pDirRec->achFileId, cchName); pDirEntry->szName[cchName] = '\0'; RTStrPurgeEncoding(pDirEntry->szName); } pDirEntry->cwcShortName = 0; pDirEntry->wszShortName[0] = '\0'; /* * To avoid duplicating code in rtFsIsoCore_InitFrom9660DirRec and * rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack. */ RTFSISOCORE TmpObj; RT_ZERO(TmpObj); rtFsIsoCore_InitFrom9660DirRec(&TmpObj, pDirRec, 1 /* cDirRecs - see below why 1 */, pThis->offDir + pShared->Core.FirstExtent.off, uVersion, NULL, pShared->Core.pVol); int rc = rtFsIsoCore_QueryInfo(&TmpObj, &pDirEntry->Info, enmAddAttr); /* * Look for rock ridge info associated with this entry * and merge that into the record. */ if (pRockInfo) { rtFsIsoDirShrd_ParseRockForDirRec(pShared, pDirRec, pRockInfo); if (pRockInfo->fValid) { if ( pRockInfo->fSeenLastNM && pRockInfo->cchName > 0 && !pShared->Core.pVol->fIsUtf16 && ( pDirRec->bFileIdLength != 1 || ( pDirRec->achFileId[0] != '\0' /* . */ && pDirRec->achFileId[0] != '\1'))) /* .. */ { size_t const cchName = pRockInfo->cchName; Assert(strlen(pRockInfo->szName) == cchName); size_t const cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchName + 1; if (*pcbDirEntry < cbNeeded) { Log3(("rtFsIsoDir_ReadDir9660: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (Rock)\n", *pcbDirEntry, cbNeeded)); *pcbDirEntry = cbNeeded; return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = (uint16_t)cchName; memcpy(pDirEntry->szName, pRockInfo->szName, cchName); pDirEntry->szName[cchName] = '\0'; RTStrPurgeEncoding(pDirEntry->szName); } } } /* * Update the directory location and handle multi extent records. * * Multi extent records only affect the file size and the directory location, * so we deal with it here instead of involving rtFsIsoCore_InitFrom9660DirRec * which would potentially require freeing memory and such. */ if (!(pDirRec->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)) { Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc)); pThis->offDir += pDirRec->cbDirRec; } else { uint32_t cExtents = 1; uint32_t offDir = pThis->offDir + pDirRec->cbDirRec; while (offDir + RT_UOFFSETOF(ISO9660DIRREC, achFileId) <= pShared->cbDir) { PCISO9660DIRREC pDirRec2 = (PCISO9660DIRREC)&pShared->pbDir[offDir]; if (pDirRec2->cbDirRec != 0) { pDirEntry->Info.cbObject += ISO9660_GET_ENDIAN(&pDirRec2->cbData); offDir += pDirRec2->cbDirRec; cExtents++; if (!(pDirRec2->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT)) break; } else offDir = (offDir + pShared->Core.pVol->cbSector) & ~(pShared->Core.pVol->cbSector - 1U); } Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x, %u extents ending at %#07x: %s (rc=%Rrc)\n", pThis->offDir, cExtents, offDir, pDirEntry->szName, rc)); pThis->offDir = offDir; } return rc; } } Log3(("rtFsIsoDir_ReadDir9660: offDir=%#07x: VERR_NO_MORE_FILES\n", pThis->offDir)); return VERR_NO_MORE_FILES; } /** * The UDF worker for rtFsIsoDir_ReadDir */ static int rtFsIsoDir_ReadDirUdf(PRTFSISODIROBJ pThis, PRTFSISODIRSHRD pShared, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry, RTFSOBJATTRADD enmAddAttr) { /* * At offset zero we've got the '.' entry. This has to be generated * manually as it's not part of the directory content. The directory * offset has to be faked for this too, so offDir == 0 indicates the '.' * entry whereas offDir == 1 is the first file id descriptor. */ if (pThis->offDir == 0) { if (*pcbDirEntry < RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2) { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2; Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW (dot)\n")); return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = 1; pDirEntry->szName[0] = '.'; pDirEntry->szName[1] = '\0'; pDirEntry->cwcShortName = 0; pDirEntry->wszShortName[0] = '\0'; int rc = rtFsIsoCore_QueryInfo(&pShared->Core, &pDirEntry->Info, enmAddAttr); Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc)); pThis->offDir = 1; return rc; } /* * Do the directory content. */ while (pThis->offDir + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) <= pShared->cbDir + 1) { PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pShared->pbDir[pThis->offDir - 1]; uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid); if (pThis->offDir + cbFid <= pShared->cbDir + 1) { /* likely */ } else break; /* * Do names first as they may cause overflows. */ if (pFid->cbName > 1) { uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid); uint32_t cbSrc = pFid->cbName; if (*pbName == 8) { /* Figure out the UTF-8 length first. */ bool fSimple = true; uint32_t cchDst = 0; for (uint32_t offSrc = 1; offSrc < cbSrc; offSrc++) if (!(pbName[offSrc] & 0x80)) cchDst++; else { cchDst += 2; fSimple = false; } size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchDst + 1; if (*pcbDirEntry >= cbNeeded) { if (fSimple) { Assert(cbSrc - 1 == cchDst); memcpy(pDirEntry->szName, &pbName[1], cchDst); pDirEntry->szName[cchDst] = '\0'; } else { char *pszDst = pDirEntry->szName; for (uint32_t offSrc = 1; offSrc < cbSrc; offSrc++) pszDst = RTStrPutCp(pszDst, pbName[offSrc]); *pszDst = '\0'; Assert((size_t)(pszDst - &pDirEntry->szName[0]) == cchDst); } } else { Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (8-bit)\n", *pcbDirEntry, cbNeeded)); *pcbDirEntry = cbNeeded; return VERR_BUFFER_OVERFLOW; } } else { /* Let RTUtf16BigToUtf8Ex do the bounds checking. */ char *pszDst = pDirEntry->szName; size_t cbDst = *pcbDirEntry - RT_UOFFSETOF(RTDIRENTRYEX, szName); size_t cchNeeded = 0; int rc; if (*pbName == 16) rc = RTUtf16BigToUtf8Ex((PCRTUTF16)(pbName + 1), (cbSrc - 1) / sizeof(RTUTF16), &pszDst, cbDst, &cchNeeded); else rc = VERR_INVALID_NAME; if (RT_SUCCESS(rc)) pDirEntry->cbName = (uint16_t)cchNeeded; else if (rc == VERR_BUFFER_OVERFLOW) { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + cchNeeded + 1; Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cchNeeded=%zu (16-bit)\n", cbDst, cchNeeded)); return VERR_BUFFER_OVERFLOW; } else { LogRelMax(90, ("ISO/UDF: Malformed directory entry name at %#x: %.*Rhxs\n", pThis->offDir - 1, cbSrc, pbName)); ssize_t cchNeeded2 = RTStrPrintf2(pszDst, cbDst, "bad-name-%#x", pThis->offDir - 1); if (cchNeeded2 >= 0) pDirEntry->cbName = (uint16_t)cchNeeded2; else { *pcbDirEntry = RT_UOFFSETOF(RTDIRENTRYEX, szName) + (size_t)-cchNeeded2; return VERR_BUFFER_OVERFLOW; } } } } else if (pFid->fFlags & UDF_FILE_FLAGS_PARENT) { size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 2 + 1; if (*pcbDirEntry < cbNeeded) { Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (dot-dot)\n", *pcbDirEntry, cbNeeded)); *pcbDirEntry = cbNeeded; return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = 2; pDirEntry->szName[0] = '.'; pDirEntry->szName[1] = '.'; pDirEntry->szName[2] = '\0'; } else { size_t cbNeeded = RT_UOFFSETOF(RTDIRENTRYEX, szName) + 1; if (*pcbDirEntry < cbNeeded) { Log3(("rtFsIsoDir_ReadDirUdf: VERR_BUFFER_OVERFLOW - cbDst=%zu cbNeeded=%zu (empty)\n", *pcbDirEntry, cbNeeded)); *pcbDirEntry = cbNeeded; return VERR_BUFFER_OVERFLOW; } pDirEntry->cbName = 0; pDirEntry->szName[0] = '\0'; } pDirEntry->cwcShortName = 0; pDirEntry->wszShortName[0] = '\0'; /* * To avoid duplicating code in rtFsIsoCore_InitUdf and * rtFsIsoCore_QueryInfo, we create a dummy RTFSISOCORE on the stack. */ RTFSISOCORE TmpObj; RT_ZERO(TmpObj); int rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&TmpObj, &pFid->Icb, pFid, pThis->offDir - 1, pShared->Core.pVol); if (RT_SUCCESS(rc)) { rc = rtFsIsoCore_QueryInfo(&TmpObj, &pDirEntry->Info, enmAddAttr); rtFsIsoCore_Destroy(&TmpObj); } /* * Update. */ Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: %s (rc=%Rrc)\n", pThis->offDir, pDirEntry->szName, rc)); pThis->offDir += cbFid; return rc; } Log3(("rtFsIsoDir_ReadDirUdf: offDir=%#07x: VERR_NO_MORE_FILES\n", pThis->offDir)); return VERR_NO_MORE_FILES; } /** * @interface_method_impl{RTVFSDIROPS,pfnReadDir} */ static DECLCALLBACK(int) rtFsIsoDir_ReadDir(void *pvThis, PRTDIRENTRYEX pDirEntry, size_t *pcbDirEntry, RTFSOBJATTRADD enmAddAttr) { PRTFSISODIROBJ pThis = (PRTFSISODIROBJ)pvThis; PRTFSISODIRSHRD pShared = pThis->pShared; int rc; if (pShared->Core.pVol->enmType != RTFSISOVOLTYPE_UDF) rc = rtFsIsoDir_ReadDir9660(pThis, pShared, pDirEntry, pcbDirEntry, enmAddAttr); else rc = rtFsIsoDir_ReadDirUdf(pThis, pShared, pDirEntry, pcbDirEntry, enmAddAttr); return rc; } /** * ISO file operations. */ static const RTVFSDIROPS g_rtFsIsoDirOps = { { /* Obj */ RTVFSOBJOPS_VERSION, RTVFSOBJTYPE_DIR, "ISO 9660 Dir", rtFsIsoDir_Close, rtFsIsoDir_QueryInfo, NULL, RTVFSOBJOPS_VERSION }, RTVFSDIROPS_VERSION, 0, { /* ObjSet */ RTVFSOBJSETOPS_VERSION, RT_UOFFSETOF(RTVFSDIROPS, ObjSet) - RT_UOFFSETOF(RTVFSDIROPS, Obj), NULL /*SetMode*/, NULL /*SetTimes*/, NULL /*SetOwner*/, RTVFSOBJSETOPS_VERSION }, rtFsIsoDir_Open, NULL /* pfnFollowAbsoluteSymlink */, NULL /* pfnOpenFile */, NULL /* pfnOpenDir */, rtFsIsoDir_CreateDir, rtFsIsoDir_OpenSymlink, rtFsIsoDir_CreateSymlink, NULL /* pfnQueryEntryInfo */, rtFsIsoDir_UnlinkEntry, rtFsIsoDir_RenameEntry, rtFsIsoDir_RewindDir, rtFsIsoDir_ReadDir, RTVFSDIROPS_VERSION, }; /** * Adds an open child to the parent directory's shared structure. * * Maintains an additional reference to the parent dir to prevent it from going * away. If @a pDir is the root directory, it also ensures the volume is * referenced and sticks around until the last open object is gone. * * @param pDir The directory. * @param pChild The child being opened. * @sa rtFsIsoDirShrd_RemoveOpenChild */ static void rtFsIsoDirShrd_AddOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild) { rtFsIsoDirShrd_Retain(pDir); RTListAppend(&pDir->OpenChildren, &pChild->Entry); pChild->pParentDir = pDir; } /** * Removes an open child to the parent directory. * * @param pDir The directory. * @param pChild The child being removed. * * @remarks This is the very last thing you do as it may cause a few other * objects to be released recursively (parent dir and the volume). * * @sa rtFsIsoDirShrd_AddOpenChild */ static void rtFsIsoDirShrd_RemoveOpenChild(PRTFSISODIRSHRD pDir, PRTFSISOCORE pChild) { AssertReturnVoid(pChild->pParentDir == pDir); RTListNodeRemove(&pChild->Entry); pChild->pParentDir = NULL; rtFsIsoDirShrd_Release(pDir); } #ifdef LOG_ENABLED /** * Logs the content of a directory. */ static void rtFsIsoDirShrd_Log9660Content(PRTFSISODIRSHRD pThis) { if (LogIs2Enabled()) { uint32_t offRec = 0; while (offRec < pThis->cbDir) { PCISO9660DIRREC pDirRec = (PCISO9660DIRREC)&pThis->pbDir[offRec]; if (pDirRec->cbDirRec == 0) break; RTUTF16 wszName[128]; if (pThis->Core.pVol->fIsUtf16) { PRTUTF16 pwszDst = &wszName[pDirRec->bFileIdLength / sizeof(RTUTF16)]; PCRTUTF16 pwszSrc = (PCRTUTF16)&pDirRec->achFileId[pDirRec->bFileIdLength]; pwszSrc--; *pwszDst-- = '\0'; while ((uintptr_t)pwszDst >= (uintptr_t)&wszName[0]) { *pwszDst = RT_BE2H_U16(*pwszSrc); pwszDst--; pwszSrc--; } } else { PRTUTF16 pwszDst = wszName; for (uint32_t off = 0; off < pDirRec->bFileIdLength; off++) *pwszDst++ = pDirRec->achFileId[off]; *pwszDst = '\0'; } 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", offRec, pDirRec->cbDirRec, pDirRec->cExtAttrBlocks, ISO9660_GET_ENDIAN(&pDirRec->cbData), ISO9660_GET_ENDIAN(&pDirRec->offExtent), pDirRec->fFileFlags, pDirRec->RecTime.bYear + 1900, pDirRec->RecTime.bMonth, pDirRec->RecTime.bDay, pDirRec->RecTime.bHour, pDirRec->RecTime.bMinute, pDirRec->RecTime.bSecond, pDirRec->RecTime.offUtc*4/60, pDirRec->bFileUnitSize, pDirRec->bInterleaveGapSize, ISO9660_GET_ENDIAN(&pDirRec->VolumeSeqNo), wszName)); uint32_t offSysUse = RT_UOFFSETOF_DYN(ISO9660DIRREC, achFileId[pDirRec->bFileIdLength]) + !(pDirRec->bFileIdLength & 1); if (offSysUse < pDirRec->cbDirRec) { Log2(("ISO9660: system use (%#x bytes):\n%.*RhxD\n", pDirRec->cbDirRec - offSysUse, pDirRec->cbDirRec - offSysUse, (uint8_t *)pDirRec + offSysUse)); } /* advance */ offRec += pDirRec->cbDirRec; } } } #endif /* LOG_ENABLED */ /** * Instantiates a new shared directory structure, given 9660 records. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pParentDir The parent directory. This is NULL for the root * directory. * @param pDirRec The directory record. Will access @a cDirRecs * records. * @param cDirRecs Number of directory records if more than one. * @param offDirRec The byte offset of the directory record. * @param pRockInfo Optional pointer to rock ridge info for the entry. * @param ppShared Where to return the shared directory structure. */ static int rtFsIsoDirShrd_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs, uint64_t offDirRec, PCRTFSISOROCKINFO pRockInfo, PRTFSISODIRSHRD *ppShared) { /* * Allocate a new structure and initialize it. */ int rc = VERR_NO_MEMORY; PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)RTMemAllocZ(sizeof(*pShared)); if (pShared) { rc = rtFsIsoCore_InitFrom9660DirRec(&pShared->Core, pDirRec, cDirRecs, offDirRec, 0 /*uVersion*/, pRockInfo, pThis); if (RT_SUCCESS(rc)) { RTListInit(&pShared->OpenChildren); pShared->cbDir = ISO9660_GET_ENDIAN(&pDirRec->cbData); pShared->pbDir = (uint8_t *)RTMemAllocZ(pShared->cbDir + 256); if (pShared->pbDir) { rc = RTVfsFileReadAt(pThis->hVfsBacking, pShared->Core.FirstExtent.off, pShared->pbDir, pShared->cbDir, NULL); if (RT_SUCCESS(rc)) { #ifdef LOG_ENABLED rtFsIsoDirShrd_Log9660Content(pShared); #endif /* * If this is the root directory, check if rock ridge info is present. */ if ( !pParentDir && !(pThis->fFlags & RTFSISO9660_F_NO_ROCK) && pShared->cbDir > RT_UOFFSETOF(ISO9660DIRREC, achFileId[1])) { PCISO9660DIRREC pDirRec0 = (PCISO9660DIRREC)pShared->pbDir; if ( pDirRec0->bFileIdLength == 1 && pDirRec0->achFileId[0] == 0 && pDirRec0->cbDirRec > RT_UOFFSETOF(ISO9660DIRREC, achFileId[1])) rtFsIsoDirShrd_ParseRockForRoot(pShared, pDirRec0); } /* * Link into parent directory so we can use it to update * our directory entry. */ if (pParentDir) rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core); *ppShared = pShared; return VINF_SUCCESS; } } else rc = VERR_NO_MEMORY; } RTMemFree(pShared); } *ppShared = NULL; return rc; } #ifdef LOG_ENABLED /** * Logs the content of a directory. */ static void rtFsIsoDirShrd_LogUdfContent(PRTFSISODIRSHRD pThis) { if (LogIs2Enabled()) { uint32_t offDesc = 0; while (offDesc + RT_UOFFSETOF(UDFFILEIDDESC, abImplementationUse) < pThis->cbDir) { PCUDFFILEIDDESC pFid = (PCUDFFILEIDDESC)&pThis->pbDir[offDesc]; uint32_t const cbFid = UDFFILEIDDESC_GET_SIZE(pFid); if (offDesc + cbFid > pThis->cbDir) break; uint32_t cwcName = 0; RTUTF16 wszName[260]; if (pFid->cbName > 0) { uint8_t const *pbName = UDFFILEIDDESC_2_NAME(pFid); uint32_t offSrc = 1; if (*pbName == 8) while (offSrc < pFid->cbName) { wszName[cwcName] = pbName[offSrc]; cwcName++; offSrc++; } else if (*pbName == 16) while (offSrc + 1 <= pFid->cbName) { wszName[cwcName] = RT_MAKE_U16(pbName[offSrc + 1], pbName[offSrc]); cwcName++; offSrc += 2; } else { RTUtf16CopyAscii(wszName, RT_ELEMENTS(wszName), ""); cwcName = 10; } } else if (pFid->fFlags & UDF_FILE_FLAGS_PARENT) { wszName[0] = '.'; wszName[1] = '.'; cwcName = 2; } else { RTUtf16CopyAscii(wszName, RT_ELEMENTS(wszName), ""); cwcName = 7; } wszName[cwcName] = '\0'; Log2(("ISO/UDF: %04x: fFlags=%#x uVer=%u Icb={%#04x:%#010RX32 LB %#06x t=%u} cbName=%#04x cbIU=%#x '%ls'\n", offDesc, pFid->fFlags, pFid->uVersion, pFid->Icb.Location.uPartitionNo, pFid->Icb.Location.off, pFid->Icb.cb, pFid->Icb.uType, pFid->cbName, pFid->cbImplementationUse, wszName)); int rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pFid->Tag, pThis->cbDir - offDesc, UDF_TAG_ID_FILE_ID_DESC, pFid->Tag.offTag, NULL); if (RT_FAILURE(rc)) Log2(("ISO/UDF: Bad Tag: %Rrc - idTag=%#x\n", rc, pFid->Tag.idTag)); if (pFid->cbImplementationUse > 32) Log2(("ISO/UDF: impl use (%#x bytes):\n%.*RhxD\n", pFid->cbImplementationUse, pFid->cbImplementationUse, pFid->abImplementationUse)); else if (pFid->cbImplementationUse > 0) Log2(("ISO/UDF: impl use (%#x bytes): %.*Rhxs\n", pFid->cbImplementationUse, pFid->cbImplementationUse, pFid->abImplementationUse)); /* advance */ offDesc += cbFid; } if (offDesc < pThis->cbDir) Log2(("ISO/UDF: warning! %#x trailing bytes in directory:\n%.*RhxD\n", pThis->cbDir - offDesc, pThis->cbDir - offDesc, &pThis->pbDir[offDesc])); } } #endif /* LOG_ENABLED */ /** * Instantiates a new shared directory structure, given UDF descriptors. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pParentDir The parent directory. This is NULL for the root * directory. * @param pAllocDesc The allocation descriptor for the directory ICB. * @param pFileIdDesc The file ID descriptor. This is NULL for the root. * @param offInDir The offset of the file ID descriptor in the parent * directory. This is used when looking up shared * directory objects. (Pass 0 for root.) * @param ppShared Where to return the shared directory structure. */ static int rtFsIsoDirShrd_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFLONGAD pAllocDesc, PCUDFFILEIDDESC pFileIdDesc, uintptr_t offInDir, PRTFSISODIRSHRD *ppShared) { /* * Allocate a new structure and initialize it. */ int rc = VERR_NO_MEMORY; PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)RTMemAllocZ(sizeof(*pShared)); if (pShared) { rc = rtFsIsoCore_InitFromUdfIcbAndFileIdDesc(&pShared->Core, pAllocDesc, pFileIdDesc, offInDir, pThis); if (RT_SUCCESS(rc)) { RTListInit(&pShared->OpenChildren); if (pShared->Core.cbObject < RTFSISO_MAX_DIR_SIZE) { pShared->cbDir = (uint32_t)pShared->Core.cbObject; pShared->pbDir = (uint8_t *)RTMemAllocZ(RT_MAX(RT_ALIGN_32(pShared->cbDir, 512), 512)); if (pShared->pbDir) { rc = rtFsIsoCore_ReadWorker(&pShared->Core, 0, pShared->pbDir, pShared->cbDir, NULL, NULL); if (RT_SUCCESS(rc)) { #ifdef LOG_ENABLED rtFsIsoDirShrd_LogUdfContent(pShared); #endif /* * Link into parent directory so we can use it to update * our directory entry. */ if (pParentDir) rtFsIsoDirShrd_AddOpenChild(pParentDir, &pShared->Core); *ppShared = pShared; return VINF_SUCCESS; } } else rc = VERR_NO_MEMORY; } } RTMemFree(pShared); } *ppShared = NULL; return rc; } /** * Instantiates a new directory with a shared structure presupplied. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pShared Referenced pointer to the shared structure. The * reference is always CONSUMED. * @param phVfsDir Where to return the directory handle. */ static int rtFsIsoDir_NewWithShared(PRTFSISOVOL pThis, PRTFSISODIRSHRD pShared, PRTVFSDIR phVfsDir) { /* * Create VFS object around the shared structure. */ PRTFSISODIROBJ pNewDir; int rc = RTVfsNewDir(&g_rtFsIsoDirOps, sizeof(*pNewDir), 0 /*fFlags*/, pThis->hVfsSelf, NIL_RTVFSLOCK /*use volume lock*/, phVfsDir, (void **)&pNewDir); if (RT_SUCCESS(rc)) { /* * Look for existing shared object, create a new one if necessary. * We CONSUME a reference to pShared here. */ pNewDir->offDir = 0; pNewDir->pShared = pShared; return VINF_SUCCESS; } rtFsIsoDirShrd_Release(pShared); *phVfsDir = NIL_RTVFSDIR; return rc; } /** * Instantiates a new directory VFS instance for ISO 9660, creating the shared * structure as necessary. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pParentDir The parent directory. This is NULL for the root * directory. * @param pDirRec The directory record. * @param cDirRecs Number of directory records if more than one. * @param offDirRec The byte offset of the directory record. * @param pRockInfo Optional pointer to rock ridge info for the entry. * @param phVfsDir Where to return the directory handle. */ static int rtFsIsoDir_New9660(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCISO9660DIRREC pDirRec, uint32_t cDirRecs, uint64_t offDirRec, PCRTFSISOROCKINFO pRockInfo, PRTVFSDIR phVfsDir) { /* * Look for existing shared object, create a new one if necessary. */ PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)rtFsIsoDir_LookupShared(pParentDir, offDirRec); if (!pShared) { int rc = rtFsIsoDirShrd_New9660(pThis, pParentDir, pDirRec, cDirRecs, offDirRec, pRockInfo, &pShared); if (RT_FAILURE(rc)) { *phVfsDir = NIL_RTVFSDIR; return rc; } } return rtFsIsoDir_NewWithShared(pThis, pShared, phVfsDir); } /** * Instantiates a new directory VFS instance for UDF, creating the shared * structure as necessary. * * @returns IPRT status code. * @param pThis The ISO volume instance. * @param pParentDir The parent directory. * @param pFid The file ID descriptor for the directory. * @param phVfsDir Where to return the directory handle. */ static int rtFsIsoDir_NewUdf(PRTFSISOVOL pThis, PRTFSISODIRSHRD pParentDir, PCUDFFILEIDDESC pFid, PRTVFSDIR phVfsDir) { Assert(pFid); Assert(pParentDir); uintptr_t const offInDir = (uintptr_t)pFid - (uintptr_t)pParentDir->pbDir; Assert(offInDir < pParentDir->cbDir); /* * Look for existing shared object, create a new one if necessary. */ PRTFSISODIRSHRD pShared = (PRTFSISODIRSHRD)rtFsIsoDir_LookupShared(pParentDir, offInDir); if (!pShared) { int rc = rtFsIsoDirShrd_NewUdf(pThis, pParentDir, &pFid->Icb, pFid, offInDir, &pShared); if (RT_FAILURE(rc)) { *phVfsDir = NIL_RTVFSDIR; return rc; } } return rtFsIsoDir_NewWithShared(pThis, pShared, phVfsDir); } /** * @interface_method_impl{RTVFSOBJOPS::Obj,pfnClose} */ static DECLCALLBACK(int) rtFsIsoVol_Close(void *pvThis) { PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis; Log(("rtFsIsoVol_Close(%p)\n", pThis)); if (pThis->pRootDir) { Assert(RTListIsEmpty(&pThis->pRootDir->OpenChildren)); Assert(pThis->pRootDir->Core.cRefs == 1); rtFsIsoDirShrd_Release(pThis->pRootDir); pThis->pRootDir = NULL; } RTVfsFileRelease(pThis->hVfsBacking); pThis->hVfsBacking = NIL_RTVFSFILE; if (RTCritSectIsInitialized(&pThis->RockBufLock)) RTCritSectDelete(&pThis->RockBufLock); return VINF_SUCCESS; } /** * @interface_method_impl{RTVFSOBJOPS::Obj,pfnQueryInfo} */ static DECLCALLBACK(int) rtFsIsoVol_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr) { RT_NOREF(pvThis, pObjInfo, enmAddAttr); return VERR_WRONG_TYPE; } static int rtFsIsoVol_ReturnUdfDString(const char *pachSrc, size_t cchSrc, void *pvDst, size_t cbDst, size_t *pcbRet) { char *pszDst = (char *)pvDst; if (pachSrc[0] == 8) { size_t const cchText = RT_MIN((uint8_t)pachSrc[cchSrc - 1], cchSrc - 2); size_t const cchActual = RTStrNLen(&pachSrc[1], cchText); *pcbRet = cchActual + 1; int rc = RTStrCopyEx(pszDst, cbDst, &pachSrc[1], cchActual); if (cbDst > 0) RTStrPurgeEncoding(pszDst); return rc; } if (pachSrc[0] == 16) { PCRTUTF16 pwszSrc = (PCRTUTF16)&pachSrc[1]; if (cchSrc > 0) return RTUtf16BigToUtf8Ex(pwszSrc, (cchSrc - 2) / sizeof(RTUTF16), &pszDst, cchSrc, pcbRet); int rc = RTUtf16CalcUtf8LenEx(pwszSrc, (cchSrc - 2) / sizeof(RTUTF16), pcbRet); if (RT_SUCCESS(rc)) { *pcbRet += 1; return VERR_BUFFER_OVERFLOW; } return rc; } if (ASMMemIsZero(pachSrc, cchSrc)) { *pcbRet = 1; if (cbDst >= 1) { *pszDst = '\0'; return VINF_SUCCESS; } return VERR_BUFFER_OVERFLOW; } *pcbRet = 0; return VERR_INVALID_UTF8_ENCODING; /** @todo better status here */ } /** * For now this is a sanitized version of rtFsIsoVolGetMaybeUtf16Be, which is * probably not correct or anything, but will have to do for now. */ static int rtFsIsoVol_ReturnIso9660D1String(const char *pachSrc, size_t cchSrc, void *pvDst, size_t cbDst, size_t *pcbRet) { char *pszDst = (char *)pvDst; /* * Check if it may be some UTF16 variant by scanning for zero bytes * (ISO-9660 doesn't allow zeros). */ size_t cFirstZeros = 0; size_t cSecondZeros = 0; for (size_t off = 0; off + 1 < cchSrc; off += 2) { cFirstZeros += pachSrc[off] == '\0'; cSecondZeros += pachSrc[off + 1] == '\0'; } if (cFirstZeros > cSecondZeros) { /* * UTF-16BE / UTC-2BE: */ if (cchSrc & 1) { AssertReturn(pachSrc[cchSrc - 1] == '\0' || pachSrc[cchSrc - 1] == ' ', VERR_INVALID_UTF16_ENCODING); cchSrc--; } while ( cchSrc >= 2 && pachSrc[cchSrc - 1] == ' ' && pachSrc[cchSrc - 2] == '\0') cchSrc -= 2; if (cbDst > 0) return RTUtf16BigToUtf8Ex((PCRTUTF16)pachSrc, cchSrc / sizeof(RTUTF16), &pszDst, cbDst, pcbRet); int rc = RTUtf16BigCalcUtf8LenEx((PCRTUTF16)pachSrc, cchSrc / sizeof(RTUTF16), pcbRet); if (RT_SUCCESS(rc)) { *pcbRet += 1; return VERR_BUFFER_OVERFLOW; } return rc; } if (cSecondZeros > 0) { /* * Little endian UTF-16 / UCS-2. */ if (cchSrc & 1) { AssertReturn(pachSrc[cchSrc - 1] == '\0' || pachSrc[cchSrc - 1] == ' ', VERR_INVALID_UTF16_ENCODING); cchSrc--; } while ( cchSrc >= 2 && pachSrc[cchSrc - 1] == '\0' && pachSrc[cchSrc - 2] == ' ') cchSrc -= 2; if (cbDst) return RTUtf16LittleToUtf8Ex((PCRTUTF16)pachSrc, cchSrc / sizeof(RTUTF16), &pszDst, cbDst, pcbRet); int rc = RTUtf16LittleCalcUtf8LenEx((PCRTUTF16)pachSrc, cchSrc / sizeof(RTUTF16), pcbRet); if (RT_SUCCESS(rc)) { *pcbRet += 1; return VERR_BUFFER_OVERFLOW; } return rc; } /* * ASSUME UTF-8/ASCII. */ while ( cchSrc > 0 && pachSrc[cchSrc - 1] == ' ') cchSrc--; *pcbRet = cchSrc + 1; int rc = RTStrCopyEx(pszDst, cbDst, pachSrc, cchSrc); if (cbDst > 0) RTStrPurgeEncoding(pszDst); return rc; } static int rtFsIsoVol_ReturnIso9660DString(const char *pachSrc, size_t cchSrc, void *pvDst, size_t cbDst, size_t *pcbRet) { /* Lazy bird: */ return rtFsIsoVol_ReturnIso9660D1String(pachSrc, cchSrc, pvDst, cbDst, pcbRet); } /** * @interface_method_impl{RTVFSOBJOPS::Obj,pfnQueryInfoEx} */ static DECLCALLBACK(int) rtFsIsoVol_QueryInfoEx(void *pvThis, RTVFSQIEX enmInfo, void *pvInfo, size_t cbInfo, size_t *pcbRet) { PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis; LogFlow(("rtFsIsoVol_QueryInfo(%p, %d,, %#zx,)\n", pThis, enmInfo, cbInfo)); union { uint8_t ab[RTFSISO_MAX_LOGICAL_BLOCK_SIZE]; ISO9660PRIMARYVOLDESC PriVolDesc; ISO9660SUPVOLDESC SupVolDesc; } uBuf; switch (enmInfo) { case RTVFSQIEX_VOL_LABEL: case RTVFSQIEX_VOL_LABEL_ALT: { if (pThis->enmType == RTFSISOVOLTYPE_UDF && ( enmInfo == RTVFSQIEX_VOL_LABEL || pThis->offPrimaryVolDesc == 0)) return rtFsIsoVol_ReturnUdfDString(pThis->Udf.VolInfo.achLogicalVolumeID, sizeof(pThis->Udf.VolInfo.achLogicalVolumeID), pvInfo, cbInfo, pcbRet); bool const fPrimary = enmInfo == RTVFSQIEX_VOL_LABEL_ALT || pThis->enmType == RTFSISOVOLTYPE_ISO9960; int rc = RTVfsFileReadAt(pThis->hVfsBacking, fPrimary ? pThis->offPrimaryVolDesc : pThis->offSecondaryVolDesc, uBuf.ab, RT_MAX(RT_MIN(pThis->cbSector, sizeof(uBuf)), sizeof(uBuf.PriVolDesc)), NULL); AssertRCReturn(rc, rc); if (fPrimary) return rtFsIsoVol_ReturnIso9660DString(uBuf.PriVolDesc.achVolumeId, sizeof(uBuf.PriVolDesc.achVolumeId), pvInfo, cbInfo, pcbRet); return rtFsIsoVol_ReturnIso9660D1String(uBuf.SupVolDesc.achVolumeId, sizeof(uBuf.SupVolDesc.achVolumeId), pvInfo, cbInfo, pcbRet); } default: return VERR_NOT_SUPPORTED; } } /** * @interface_method_impl{RTVFSOPS,pfnOpenRoot} */ static DECLCALLBACK(int) rtFsIsoVol_OpenRoot(void *pvThis, PRTVFSDIR phVfsDir) { PRTFSISOVOL pThis = (PRTFSISOVOL)pvThis; rtFsIsoDirShrd_Retain(pThis->pRootDir); /* consumed by the next call */ return rtFsIsoDir_NewWithShared(pThis, pThis->pRootDir, phVfsDir); } /** * @interface_method_impl{RTVFSOPS,pfnQueryRangeState} */ static DECLCALLBACK(int) rtFsIsoVol_QueryRangeState(void *pvThis, uint64_t off, size_t cb, bool *pfUsed) { RT_NOREF(pvThis, off, cb, pfUsed); return VERR_NOT_IMPLEMENTED; } DECL_HIDDEN_CONST(const RTVFSOPS) g_rtFsIsoVolOps = { { /* Obj */ RTVFSOBJOPS_VERSION, RTVFSOBJTYPE_VFS, "ISO 9660/UDF", rtFsIsoVol_Close, rtFsIsoVol_QueryInfo, rtFsIsoVol_QueryInfoEx, RTVFSOBJOPS_VERSION }, RTVFSOPS_VERSION, 0 /* fFeatures */, rtFsIsoVol_OpenRoot, rtFsIsoVol_QueryRangeState, RTVFSOPS_VERSION }; /** * Checks the descriptor tag and CRC. * * @retval IPRT status code. * @retval VERR_ISOFS_TAG_IS_ALL_ZEROS * @retval VERR_MISMATCH * @retval VERR_ISOFS_UNSUPPORTED_TAG_VERSION * @retval VERR_ISOFS_TAG_SECTOR_MISMATCH * @retval VERR_ISOFS_BAD_TAG_CHECKSUM * * @param pTag The tag to check. * @param idTag The expected descriptor tag ID, UINT16_MAX matches any * tag ID. * @param offTag The sector offset of the tag. * @param pErrInfo Where to return extended error info. */ static int rtFsIsoVolValidateUdfDescTag(PCUDFTAG pTag, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo) { /* * Checksum the tag first. */ const uint8_t *pbTag = (const uint8_t *)pTag; uint8_t const bChecksum = pbTag[0] + pbTag[1] + pbTag[2] + pbTag[3] + pbTag[5] /* skipping byte 4 as that's the checksum. */ + pbTag[6] + pbTag[7] + pbTag[8] + pbTag[9] + pbTag[10] + pbTag[11] + pbTag[12] + pbTag[13] + pbTag[14] + pbTag[15]; if (pTag->uChecksum == bChecksum) { /* * Do the matching. */ if ( pTag->uVersion == 3 || pTag->uVersion == 2) { if ( pTag->idTag == idTag || idTag == UINT16_MAX) { if (pTag->offTag == offTag) { //Log3(("ISO/UDF: Valid descriptor %#06x at %#010RX32; cbDescriptorCrc=%#06RX32 uTagSerialNo=%#x\n", // pTag->idTag, offTag, pTag->cbDescriptorCrc, pTag->uTagSerialNo)); return VINF_SUCCESS; } Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Sector mismatch: %#RX32 (%.*Rhxs)\n", idTag, offTag, pTag->offTag, sizeof(*pTag), pTag)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TAG_SECTOR_MISMATCH, "Descriptor tag sector number mismatch: %#x, expected %#x (%.*Rhxs)", pTag->offTag, offTag, sizeof(*pTag), pTag); } Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Tag ID mismatch: %#x (%.*Rhxs)\n", idTag, offTag, pTag->idTag, sizeof(*pTag), pTag)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_MISMATCH, "Descriptor tag ID mismatch: %#x, expected %#x (%.*Rhxs)", pTag->idTag, idTag, sizeof(*pTag), pTag); } if (ASMMemIsZero(pTag, sizeof(*pTag))) { Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): All zeros\n", idTag, offTag)); return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TAG_IS_ALL_ZEROS, "Descriptor is all zeros"); } Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): Unsupported version: %#x (%.*Rhxs)\n", idTag, offTag, pTag->uVersion, sizeof(*pTag), pTag)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNSUPPORTED_TAG_VERSION, "Unsupported descriptor tag version: %#x, expected 2 or 3 (%.*Rhxs)", pTag->uVersion, sizeof(*pTag), pTag); } Log(("rtFsIsoVolValidateUdfDescTag(,%#x,%#010RX32,): checksum error: %#x, calc %#x (%.*Rhxs)\n", idTag, offTag, pTag->uChecksum, bChecksum, sizeof(*pTag), pTag)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_TAG_CHECKSUM, "Descriptor tag checksum error: %#x, calculated %#x (%.*Rhxs)", pTag->uChecksum, bChecksum, sizeof(*pTag), pTag); } /** * Checks the descriptor CRC. * * @retval VINF_SUCCESS * @retval VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC * @retval VERR_ISOFS_DESC_CRC_MISMATCH * * @param pTag The descriptor buffer to checksum. * @param cbDesc The size of the descriptor buffer. * @param pErrInfo Where to return extended error info. */ static int rtFsIsoVolValidateUdfDescCrc(PCUDFTAG pTag, size_t cbDesc, PRTERRINFO pErrInfo) { if (pTag->cbDescriptorCrc + sizeof(*pTag) <= cbDesc) { uint16_t uCrc = RTCrc16Ccitt(pTag + 1, pTag->cbDescriptorCrc); if (pTag->uDescriptorCrc == uCrc) return VINF_SUCCESS; Log(("rtFsIsoVolValidateUdfDescCrc(,%#x,%#010RX32,): Descriptor CRC mismatch: expected %#x, calculated %#x (cbDescriptorCrc=%#x)\n", pTag->idTag, pTag->offTag, pTag->uDescriptorCrc, uCrc, pTag->cbDescriptorCrc)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_DESC_CRC_MISMATCH, "Descriptor CRC mismatch: exepcted %#x, calculated %#x (cbDescriptor=%#x, idTag=%#x, offTag=%#010RX32)", pTag->uDescriptorCrc, uCrc, pTag->cbDescriptorCrc, pTag->idTag, pTag->offTag); } Log(("rtFsIsoVolValidateUdfDescCrc(,%#x,%#010RX32,): Insufficient data to CRC: cbDescriptorCrc=%#x cbDesc=%#zx\n", pTag->idTag, pTag->offTag, pTag->cbDescriptorCrc, cbDesc)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC, "Insufficient data to CRC: cbDescriptorCrc=%#x cbDesc=%#zx (idTag=%#x, offTag=%#010RX32)", pTag->cbDescriptorCrc, cbDesc, pTag->idTag, pTag->offTag); } /** * Checks the descriptor tag and CRC. * * @retval VINF_SUCCESS * @retval VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC * @retval VERR_ISOFS_TAG_IS_ALL_ZEROS * @retval VERR_MISMATCH * @retval VERR_ISOFS_UNSUPPORTED_TAG_VERSION * @retval VERR_ISOFS_TAG_SECTOR_MISMATCH * @retval VERR_ISOFS_BAD_TAG_CHECKSUM * @retval VERR_ISOFS_DESC_CRC_MISMATCH * * @param pTag The descriptor buffer to check the tag of and to * checksum. * @param cbDesc The size of the descriptor buffer. * @param idTag The expected descriptor tag ID, UINT16_MAX * matches any tag ID. * @param offTag The sector offset of the tag. * @param pErrInfo Where to return extended error info. */ static int rtFsIsoVolValidateUdfDescTagAndCrc(PCUDFTAG pTag, size_t cbDesc, uint16_t idTag, uint32_t offTag, PRTERRINFO pErrInfo) { int rc = rtFsIsoVolValidateUdfDescTag(pTag, idTag, offTag, pErrInfo); if (RT_SUCCESS(rc)) rc = rtFsIsoVolValidateUdfDescCrc(pTag, cbDesc, pErrInfo); return rc; } static int rtFsIsoVolProcessUdfFileSetDescs(PRTFSISOVOL pThis, uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo) { /* * We assume there is a single file descriptor and don't bother checking what comes next. */ PUDFFILESETDESC pFsd = (PUDFFILESETDESC)pbBuf; Assert(cbBuf > sizeof(*pFsd)); NOREF(cbBuf); RT_ZERO(*pFsd); size_t cbToRead = RT_MAX(pThis->Udf.VolInfo.FileSetDescriptor.cb, sizeof(*pFsd)); int rc = rtFsIsoVolUdfVpRead(pThis, pThis->Udf.VolInfo.FileSetDescriptor.Location.uPartitionNo, pThis->Udf.VolInfo.FileSetDescriptor.Location.off, 0, pFsd, cbToRead); if (RT_SUCCESS(rc)) { rc = rtFsIsoVolValidateUdfDescTagAndCrc(&pFsd->Tag, cbToRead, UDF_TAG_ID_FILE_SET_DESC, pThis->Udf.VolInfo.FileSetDescriptor.Location.off, pErrInfo); if (RT_SUCCESS(rc)) { #ifdef LOG_ENABLED Log(("ISO/UDF: File set descriptor at %#RX32 (%#RX32:%#RX32)\n", pFsd->Tag.offTag, pThis->Udf.VolInfo.FileSetDescriptor.Location.uPartitionNo, pThis->Udf.VolInfo.FileSetDescriptor.Location.off)); if (LogIs2Enabled()) { UDF_LOG2_MEMBER_TIMESTAMP(pFsd, RecordingTimestamp); UDF_LOG2_MEMBER(pFsd, "#06RX16", uInterchangeLevel); UDF_LOG2_MEMBER(pFsd, "#06RX16", uMaxInterchangeLevel); UDF_LOG2_MEMBER(pFsd, "#010RX32", fCharacterSets); UDF_LOG2_MEMBER(pFsd, "#010RX32", fMaxCharacterSets); UDF_LOG2_MEMBER(pFsd, "#010RX32", uFileSetNo); UDF_LOG2_MEMBER(pFsd, "#010RX32", uFileSetDescNo); UDF_LOG2_MEMBER_CHARSPEC(pFsd, LogicalVolumeIDCharSet); UDF_LOG2_MEMBER_DSTRING(pFsd, achLogicalVolumeID); UDF_LOG2_MEMBER_CHARSPEC(pFsd, FileSetCharSet); UDF_LOG2_MEMBER_DSTRING(pFsd, achFileSetID); UDF_LOG2_MEMBER_DSTRING(pFsd, achCopyrightFile); UDF_LOG2_MEMBER_DSTRING(pFsd, achAbstractFile); UDF_LOG2_MEMBER_LONGAD(pFsd, RootDirIcb); UDF_LOG2_MEMBER_ENTITY_ID(pFsd, idDomain); UDF_LOG2_MEMBER_LONGAD(pFsd, NextExtent); UDF_LOG2_MEMBER_LONGAD(pFsd, SystemStreamDirIcb); if (!ASMMemIsZero(&pFsd->abReserved[0], sizeof(pFsd->abReserved))) UDF_LOG2_MEMBER(pFsd, ".32Rhxs", abReserved); } #endif /* * Do some basic sanity checking. */ if (!UDF_IS_CHAR_SET_OSTA(&pFsd->FileSetCharSet)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_UNSUPPORTED_CHAR_SET, "Invalid file set charset %.64Rhxs", &pFsd->FileSetCharSet); if ( pFsd->RootDirIcb.cb == 0 || pFsd->RootDirIcb.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_ZERO_ROOT_DIR, "Root Dir ICB location is zero or malformed: uType=%#x cb=%#x loc=%#x:%#RX32", pFsd->RootDirIcb.uType, pFsd->RootDirIcb.cb, pFsd->RootDirIcb.Location.uPartitionNo, pFsd->RootDirIcb.Location.off); if ( pFsd->NextExtent.cb != 0 && pFsd->NextExtent.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_FSD_NEXT_EXTENT, "NextExtent isn't zero: uType=%#x cb=%#x loc=%#x:%#RX32", pFsd->NextExtent.uType, pFsd->NextExtent.cb, pFsd->NextExtent.Location.uPartitionNo, pFsd->NextExtent.Location.off); /* * Copy the information we need. */ pThis->Udf.VolInfo.RootDirIcb = pFsd->RootDirIcb; if ( pFsd->SystemStreamDirIcb.cb > 0 && pFsd->SystemStreamDirIcb.uType == UDF_AD_TYPE_RECORDED_AND_ALLOCATED) pThis->Udf.VolInfo.SystemStreamDirIcb = pFsd->SystemStreamDirIcb; else RT_ZERO(pThis->Udf.VolInfo.SystemStreamDirIcb); return VINF_SUCCESS; } return rc; } return RTERRINFO_LOG_SET(pErrInfo, rc, "Error reading file set descriptor"); } /** * Check validatity and extract information from the descriptors in the VDS seq. * * @returns IPRT status code * @param pThis The instance. * @param pInfo The VDS sequence info. * @param pErrInfo Where to return extended error info. */ static int rtFsIsoVolProcessUdfVdsSeqInfo(PRTFSISOVOL pThis, PRTFSISOVDSINFO pInfo, PRTERRINFO pErrInfo) { /* * Check the basic descriptor counts. */ PUDFPRIMARYVOLUMEDESC pPvd; if (pInfo->cPrimaryVols == 1) pPvd = pInfo->apPrimaryVols[0]; else { if (pInfo->cPrimaryVols == 0) return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_PVD, "No primary volume descriptor was found"); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MULTIPLE_PVDS, "More than one primary volume descriptor was found: %u", pInfo->cPrimaryVols); } PUDFLOGICALVOLUMEDESC pLvd; if (pInfo->cLogicalVols == 1) pLvd = pInfo->apLogicalVols[0]; else { if (pInfo->cLogicalVols == 0) return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_LVD, "No logical volume descriptor was found"); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MULTIPLE_LVDS, "More than one logical volume descriptor was found: %u", pInfo->cLogicalVols); } #if 0 if (pInfo->cPartitions == 0) return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_NO_PD, "No partition descriptors was found"); #endif /* * Check out the partition map in the logical volume descriptor. * Produce the mapping table while going about that. */ if (pLvd->cPartitionMaps > 64) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TOO_MANY_PART_MAPS, "Too many partition maps: %u (max 64)", pLvd->cPartitionMaps); PRTFSISOVOLUDFPMAP paPartMaps = NULL; if (pLvd->cPartitionMaps > 0) { pInfo->paPartMaps = paPartMaps = (PRTFSISOVOLUDFPMAP)RTMemAllocZ(sizeof(paPartMaps[0]) * pLvd->cPartitionMaps); if (!paPartMaps) return VERR_NO_MEMORY; } uint32_t cPartMaps = 0; if (pLvd->cbMapTable) { uint32_t off = 0; while (off + sizeof(UDFPARTMAPHDR) <= pLvd->cbMapTable) { PCUDFPARTMAPHDR pHdr = (PCUDFPARTMAPHDR)&pLvd->abPartitionMaps[off]; /* * Bounds checking. */ if (off + pHdr->cb > pLvd->cbMapTable) { if (cPartMaps < pLvd->cbMapTable) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MALFORMED_PART_MAP_TABLE, "Incomplete partition map entry at offset %#x: cb=%#x -> offEnd=%#x cbMapTable=%#x (type=%#x)", off, pHdr->cb, off + pHdr->cb, pLvd->cbMapTable, pHdr->bType); LogRel(("ISO/UDF: Warning: Incomplete partition map entry at offset %#x: cb=%#x -> offEnd=%#x cbMapTable=%#x (type=%#x)\n", off, pHdr->cb, off + pHdr->cb, pLvd->cbMapTable, pHdr->bType)); break; } if (cPartMaps >= pLvd->cPartitionMaps) { 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", cPartMaps - pLvd->cPartitionMaps, off, pHdr->cb, pLvd->cbMapTable, pHdr->bType)); break; } /* * Extract relevant info out of the entry. */ paPartMaps[cPartMaps].offMapTable = (uint16_t)off; uint16_t uPartitionNo; if (pHdr->bType == 1) { PCUDFPARTMAPTYPE1 pType1 = (PCUDFPARTMAPTYPE1)pHdr; paPartMaps[cPartMaps].uVolumeSeqNo = pType1->uVolumeSeqNo; paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_PLAIN; uPartitionNo = pType1->uPartitionNo; } else if (pHdr->bType == 2) { PCUDFPARTMAPTYPE2 pType2 = (PCUDFPARTMAPTYPE2)pHdr; if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_VPM_PARTITION_TYPE)) { paPartMaps[cPartMaps].bType = pType2->idPartitionType.Suffix.Udf.uUdfRevision >= 0x200 ? RTFSISO_UDF_PMAP_T_VPM_20 : RTFSISO_UDF_PMAP_T_VPM_15; return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_VPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported", pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision); } else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_SPM_PARTITION_TYPE)) { paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_SPM; return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_SPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported", pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision); } else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_MPM_PARTITION_TYPE)) { paPartMaps[cPartMaps].bType = RTFSISO_UDF_PMAP_T_MPM; return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_MPM_NOT_SUPPORTED, "Partition type '%.23s' (%#x) not supported", pType2->idPartitionType.achIdentifier, pType2->idPartitionType.Suffix.Udf.uUdfRevision); } else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNKNOWN_PART_MAP_TYPE_ID, "Unknown partition map ID for #%u @ %#x: %.23s", cPartMaps, off, pType2->idPartitionType.achIdentifier); #if 0 /* unreachable code */ paPartMaps[cPartMaps].uVolumeSeqNo = pType2->uVolumeSeqNo; uPartitionNo = pType2->uPartitionNo; #endif } else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNKNOWN_PART_MAP_ENTRY_TYPE, "Unknown partition map entry type #%u @ %#x: %u", cPartMaps, off, pHdr->bType); paPartMaps[cPartMaps].uPartitionNo = uPartitionNo; /* * Lookup the partition number and retrieve the relevant info from the partition descriptor. */ uint32_t i = pInfo->cPartitions; while (i-- > 0) { PUDFPARTITIONDESC pPd = pInfo->apPartitions[i]; if (paPartMaps[cPartMaps].uPartitionNo == pPd->uPartitionNo) { paPartMaps[cPartMaps].idxPartDesc = (uint16_t)i; paPartMaps[cPartMaps].cSectors = pPd->cSectors; paPartMaps[cPartMaps].offLocation = pPd->offLocation; paPartMaps[cPartMaps].offByteLocation = (uint64_t)pPd->offLocation * pThis->cbSector; paPartMaps[cPartMaps].fFlags = pPd->fFlags; paPartMaps[cPartMaps].uAccessType = pPd->uAccessType; if (!UDF_ENTITY_ID_EQUALS(&pPd->PartitionContents, UDF_ENTITY_ID_PD_PARTITION_CONTENTS_UDF)) paPartMaps[cPartMaps].fHaveHdr = false; else { paPartMaps[cPartMaps].fHaveHdr = true; paPartMaps[cPartMaps].Hdr = pPd->ContentsUse.Hdr; } break; } } if (i > pInfo->cPartitions) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_PARTITION_NOT_FOUND, "Partition #%u (%#x) specified by mapping entry #%u (@ %#x) was not found! (int-type %u)", uPartitionNo, uPartitionNo, cPartMaps, off, paPartMaps[cPartMaps].bType); /* * Advance. */ cPartMaps++; off += pHdr->cb; } if (cPartMaps < pLvd->cPartitionMaps) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_INCOMPLETE_PART_MAP_TABLE, "Only found %u of the %u announced partition mapping table entries", cPartMaps, pLvd->cPartitionMaps); } /* It might be theoretically possible to not use virtual partitions for accessing data, so just warn if there aren't any. */ if (cPartMaps == 0) LogRel(("ISO/UDF: Warning: No partition maps!\n")); /* * Check out the logical volume descriptor. */ if ( pLvd->cbLogicalBlock < pThis->cbSector || pLvd->cbLogicalBlock > RTFSISO_MAX_LOGICAL_BLOCK_SIZE || (pLvd->cbLogicalBlock % pThis->cbSector) != 0) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNSUPPORTED_LOGICAL_BLOCK_SIZE, "Logical block size of %#x is not supported with a sector size of %#x", pLvd->cbLogicalBlock, pThis->cbSector); if (!UDF_ENTITY_ID_EQUALS(&pLvd->idDomain, UDF_ENTITY_ID_LVD_DOMAIN)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_DOMAIN_ID, "Unsupported domain ID in logical volume descriptor: '%.23s'", pLvd->idDomain.achIdentifier); if ( pLvd->ContentsUse.FileSetDescriptor.uType != UDF_AD_TYPE_RECORDED_AND_ALLOCATED || pLvd->ContentsUse.FileSetDescriptor.cb == 0 || pLvd->ContentsUse.FileSetDescriptor.Location.uPartitionNo >= cPartMaps) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_FILE_SET_DESC_LOCATION, "Malformed file set descriptor location (type=%u cb=%#x part=%#x)", pLvd->ContentsUse.FileSetDescriptor.uType, pLvd->ContentsUse.FileSetDescriptor.cb, pLvd->ContentsUse.FileSetDescriptor.Location.uPartitionNo); bool fLvdHaveVolId = !ASMMemIsZero(pLvd->achLogicalVolumeID, sizeof(pLvd->achLogicalVolumeID)); if ( fLvdHaveVolId && !UDF_IS_CHAR_SET_OSTA(&pLvd->DescCharSet)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_BAD_LVD_DESC_CHAR_SET, "Logical volume ID is not using OSTA compressed unicode"); /* * We can ignore much, if not all of the primary volume descriptor. */ /* * We're good. So copy over the data. */ pThis->Udf.VolInfo.FileSetDescriptor = pLvd->ContentsUse.FileSetDescriptor; pThis->Udf.VolInfo.cbBlock = pLvd->cbLogicalBlock; pThis->Udf.VolInfo.cShiftBlock = 9; while (pThis->Udf.VolInfo.cbBlock != RT_BIT_32(pThis->Udf.VolInfo.cShiftBlock)) pThis->Udf.VolInfo.cShiftBlock++; pThis->Udf.VolInfo.fFlags = pPvd->fFlags; pThis->Udf.VolInfo.cPartitions = cPartMaps; pThis->Udf.VolInfo.paPartitions = paPartMaps; pInfo->paPartMaps = NULL; if (fLvdHaveVolId) memcpy(pThis->Udf.VolInfo.achLogicalVolumeID, pLvd->achLogicalVolumeID, sizeof(pThis->Udf.VolInfo.achLogicalVolumeID)); else RT_ZERO(pThis->Udf.VolInfo.achLogicalVolumeID); return VINF_SUCCESS; } /** * Processes a primary volume descriptor in the VDS (UDF). * * @returns IPRT status code. * @param pInfo Where we gather descriptor information. * @param pDesc The descriptor. * @param pErrInfo Where to return extended error information. */ //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 static int rtFsIsoVolProcessUdfPrimaryVolDesc(PRTFSISOVDSINFO pInfo, PCUDFPRIMARYVOLUMEDESC pDesc, PRTERRINFO pErrInfo) { #ifdef LOG_ENABLED Log(("ISO/UDF: Primary volume descriptor at sector %#RX32\n", pDesc->Tag.offTag)); if (LogIs2Enabled()) { UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo); UDF_LOG2_MEMBER(pDesc, "#010RX32", uPrimaryVolumeDescNo); UDF_LOG2_MEMBER_DSTRING(pDesc, achVolumeID); UDF_LOG2_MEMBER(pDesc, "#06RX16", uVolumeSeqNo); UDF_LOG2_MEMBER(pDesc, "#06RX16", uVolumeSeqNo); UDF_LOG2_MEMBER(pDesc, "#06RX16", uMaxVolumeSeqNo); UDF_LOG2_MEMBER(pDesc, "#06RX16", uInterchangeLevel); UDF_LOG2_MEMBER(pDesc, "#06RX16", uMaxInterchangeLevel); UDF_LOG2_MEMBER(pDesc, "#010RX32", fCharacterSets); UDF_LOG2_MEMBER(pDesc, "#010RX32", fMaxCharacterSets); UDF_LOG2_MEMBER_DSTRING(pDesc, achVolumeSetID); UDF_LOG2_MEMBER_CHARSPEC(pDesc, DescCharSet); UDF_LOG2_MEMBER_CHARSPEC(pDesc, ExplanatoryCharSet); UDF_LOG2_MEMBER_EXTENTAD(pDesc, VolumeAbstract); UDF_LOG2_MEMBER_EXTENTAD(pDesc, VolumeCopyrightNotice); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idApplication); UDF_LOG2_MEMBER_TIMESTAMP(pDesc, RecordingTimestamp); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation); if (!ASMMemIsZero(&pDesc->abImplementationUse, sizeof(pDesc->abImplementationUse))) Log2(("ISO/UDF: %-32s %.64Rhxs\n", "abReserved[64]:", &pDesc->abImplementationUse[0])); UDF_LOG2_MEMBER(pDesc, "#010RX32", offPredecessorVolDescSeq); UDF_LOG2_MEMBER(pDesc, "#06RX16", fFlags); if (!ASMMemIsZero(&pDesc->abReserved, sizeof(pDesc->abReserved))) Log2(("ISO/UDF: %-32s %.22Rhxs\n", "abReserved[22]:", &pDesc->abReserved[0])); } #endif /* * Check if this is a new revision of an existing primary volume descriptor. */ PUDFPRIMARYVOLUMEDESC pEndianConvert = NULL; uint32_t i = pInfo->cPrimaryVols; while (i--> 0) { if ( memcmp(pDesc->achVolumeID, pInfo->apPrimaryVols[i]->achVolumeID, sizeof(pDesc->achVolumeID)) == 0 && memcmp(&pDesc->DescCharSet, &pInfo->apPrimaryVols[i]->DescCharSet, sizeof(pDesc->DescCharSet)) == 0) { if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apPrimaryVols[i]->uVolumeDescSeqNo) { Log(("ISO/UDF: Primary descriptor prevails over previous! (%u >= %u)\n", RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo)); pEndianConvert = pInfo->apPrimaryVols[i]; memcpy(pEndianConvert, pDesc, sizeof(*pDesc)); } else Log(("ISO/UDF: Primary descriptor has lower sequence number than the previous! (%u < %u)\n", RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo)); break; } } if (i >= pInfo->cPrimaryVols) { /* * It wasn't. Append it. */ i = pInfo->cPrimaryVols; if (i < RT_ELEMENTS(pInfo->apPrimaryVols)) { pInfo->apPrimaryVols[i] = pEndianConvert = (PUDFPRIMARYVOLUMEDESC)RTMemDup(pDesc, sizeof(*pDesc)); if (pEndianConvert) pInfo->cPrimaryVols = i + 1; else return VERR_NO_MEMORY; Log2(("ISO/UDF: ++New primary descriptor.\n")); } else return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_PVDS, "Encountered too many primary volume descriptors"); } #ifdef RT_BIG_ENDIAN /* * Do endian conversion of the descriptor. */ if (pEndianConvert) { AssertFailed(); } #else RT_NOREF(pEndianConvert); #endif return VINF_SUCCESS; } /** * Processes an logical volume descriptor in the VDS (UDF). * * @returns IPRT status code. * @param pInfo Where we gather descriptor information. * @param pDesc The descriptor. * @param cbSector The sector size (UDF defines the logical and physical * sector size to be the same). * @param pErrInfo Where to return extended error information. */ static int rtFsIsoVolProcessUdfLogicalVolumeDesc(PRTFSISOVDSINFO pInfo, PCUDFLOGICALVOLUMEDESC pDesc, uint32_t cbSector, PRTERRINFO pErrInfo) { #ifdef LOG_ENABLED Log(("ISO/UDF: Logical volume descriptor at sector %#RX32\n", pDesc->Tag.offTag)); if (LogIs2Enabled()) { UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo); UDF_LOG2_MEMBER_CHARSPEC(pDesc, DescCharSet); UDF_LOG2_MEMBER_DSTRING(pDesc, achLogicalVolumeID); UDF_LOG2_MEMBER(pDesc, "#010RX32", cbLogicalBlock); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idDomain); if (UDF_ENTITY_ID_EQUALS(&pDesc->idDomain, UDF_ENTITY_ID_LVD_DOMAIN)) UDF_LOG2_MEMBER_LONGAD(pDesc, ContentsUse.FileSetDescriptor); else if (!ASMMemIsZero(&pDesc->ContentsUse.ab[0], sizeof(pDesc->ContentsUse.ab))) Log2(("ISO/UDF: %-32s %.16Rhxs\n", "ContentsUse.ab[16]:", &pDesc->ContentsUse.ab[0])); UDF_LOG2_MEMBER(pDesc, "#010RX32", cbMapTable); UDF_LOG2_MEMBER(pDesc, "#010RX32", cPartitionMaps); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation); if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab))) Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ImplementationUse.ab[128]:", &pDesc->ImplementationUse.ab[0])); UDF_LOG2_MEMBER_EXTENTAD(pDesc, IntegritySeqExtent); if (pDesc->cbMapTable) { Log2(("ISO/UDF: %-32s\n", "abPartitionMaps")); uint32_t iMap = 0; uint32_t off = 0; while (off + sizeof(UDFPARTMAPHDR) <= pDesc->cbMapTable) { PCUDFPARTMAPHDR pHdr = (PCUDFPARTMAPHDR)&pDesc->abPartitionMaps[off]; Log2(("ISO/UDF: %02u @ %#05x: type %u, length %u\n", iMap, off, pHdr->bType, pHdr->cb)); if (off + pHdr->cb > pDesc->cbMapTable) { Log2(("ISO/UDF: BAD! Entry is %d bytes too long!\n", off + pHdr->cb - pDesc->cbMapTable)); break; } if (pHdr->bType == 1) { PCUDFPARTMAPTYPE1 pType1 = (PCUDFPARTMAPTYPE1)pHdr; UDF_LOG2_MEMBER_EX(pType1, "#06RX16", uVolumeSeqNo, 5); UDF_LOG2_MEMBER_EX(pType1, "#06RX16", uPartitionNo, 5); } else if (pHdr->bType == 2) { PCUDFPARTMAPTYPE2 pType2 = (PCUDFPARTMAPTYPE2)pHdr; UDF_LOG2_MEMBER_ENTITY_ID_EX(pType2, idPartitionType, 5); UDF_LOG2_MEMBER_EX(pType2, "#06RX16", uVolumeSeqNo, 5); UDF_LOG2_MEMBER_EX(pType2, "#06RX16", uPartitionNo, 5); if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_SPM_PARTITION_TYPE)) { UDF_LOG2_MEMBER_EX(&pType2->u, "#06RX16", Spm.cBlocksPerPacket, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Spm.cSparingTables, 5); if (pType2->u.Spm.bReserved2) UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Spm.bReserved2, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.cbSparingTable, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[0], 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[1], 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[2], 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Spm.aoffSparingTables[3], 5); } else if (UDF_ENTITY_ID_EQUALS(&pType2->idPartitionType, UDF_ENTITY_ID_MPM_PARTITION_TYPE)) { UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataFile, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataMirrorFile, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.offMetadataBitmapFile, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#010RX32", Mpm.cBlocksAllocationUnit, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#06RX16", Mpm.cBlocksAlignmentUnit, 5); UDF_LOG2_MEMBER_EX(&pType2->u, "#04RX8", Mpm.fFlags, 5); if (!ASMMemIsZero(pType2->u.Mpm.abReserved2, sizeof(pType2->u.Mpm.abReserved2))) UDF_LOG2_MEMBER_EX(&pType2->u, ".5Rhxs", Mpm.abReserved2, 5); } } else Log2(("ISO/UDF: BAD! Unknown type!\n")); /* advance */ off += pHdr->cb; iMap++; } } } #endif /* * Check if this is a newer revision of an existing primary volume descriptor. */ size_t cbDesc = (size_t)pDesc->cbMapTable + RT_UOFFSETOF(UDFLOGICALVOLUMEDESC, abPartitionMaps); if ( pDesc->cbMapTable >= (UINT32_MAX >> 1) || cbDesc > cbSector) { Log(("ISO/UDF: Logical volume descriptor is too big: %#zx (cbSector=%#x)\n", cbDesc, cbSector)); return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_TOO_BIT_PARTMAP_IN_LVD, "Logical volume descriptor is too big: %#zx (cbSector=%#x)\n", cbDesc, cbSector); } PUDFLOGICALVOLUMEDESC pEndianConvert = NULL; uint32_t i = pInfo->cLogicalVols; while (i--> 0) if ( memcmp(pDesc->achLogicalVolumeID, pInfo->apLogicalVols[i]->achLogicalVolumeID, sizeof(pDesc->achLogicalVolumeID)) == 0 && memcmp(&pDesc->DescCharSet, &pInfo->apLogicalVols[i]->DescCharSet, sizeof(pDesc->DescCharSet)) == 0) { if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apLogicalVols[i]->uVolumeDescSeqNo) { Log(("ISO/UDF: Logical descriptor prevails over previous! (%u >= %u)\n", RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apLogicalVols[i]->uVolumeDescSeqNo)); pEndianConvert = (PUDFLOGICALVOLUMEDESC)RTMemDup(pDesc, cbDesc); if (!pEndianConvert) return VERR_NO_MEMORY; RTMemFree(pInfo->apLogicalVols[i]); pInfo->apLogicalVols[i] = pEndianConvert; } else Log(("ISO/UDF: Logical descriptor has lower sequence number than the previous! (%u >= %u)\n", RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apLogicalVols[i]->uVolumeDescSeqNo)); break; } if (i >= pInfo->cLogicalVols) { /* * It wasn't. Append it. */ i = pInfo->cLogicalVols; if (i < RT_ELEMENTS(pInfo->apLogicalVols)) { pInfo->apLogicalVols[i] = pEndianConvert = (PUDFLOGICALVOLUMEDESC)RTMemDup(pDesc, cbDesc); if (pEndianConvert) pInfo->cLogicalVols = i + 1; else return VERR_NO_MEMORY; Log2(("ISO/UDF: ++New logical volume descriptor.\n")); } else return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_LVDS, "Too many logical volume descriptors"); } #ifdef RT_BIG_ENDIAN /* * Do endian conversion of the descriptor. */ if (pEndianConvert) { AssertFailed(); } #else RT_NOREF(pEndianConvert); #endif return VINF_SUCCESS; } /** * Processes an partition descriptor in the VDS (UDF). * * @returns IPRT status code. * @param pInfo Where we gather descriptor information. * @param pDesc The descriptor. * @param pErrInfo Where to return extended error information. */ static int rtFsIsoVolProcessUdfPartitionDesc(PRTFSISOVDSINFO pInfo, PCUDFPARTITIONDESC pDesc, PRTERRINFO pErrInfo) { #ifdef LOG_ENABLED Log(("ISO/UDF: Partition descriptor at sector %#RX32\n", pDesc->Tag.offTag)); if (LogIs2Enabled()) { UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo); UDF_LOG2_MEMBER(pDesc, "#06RX16", fFlags); UDF_LOG2_MEMBER(pDesc, "#06RX16", uPartitionNo); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, PartitionContents); if (UDF_ENTITY_ID_EQUALS(&pDesc->PartitionContents, UDF_ENTITY_ID_PD_PARTITION_CONTENTS_UDF)) { UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.UnallocatedSpaceTable); UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.UnallocatedSpaceBitmap); UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.PartitionIntegrityTable); UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.FreedSpaceTable); UDF_LOG2_MEMBER_SHORTAD(&pDesc->ContentsUse, Hdr.FreedSpaceBitmap); if (!ASMMemIsZero(&pDesc->ContentsUse.Hdr.abReserved[0], sizeof(pDesc->ContentsUse.Hdr.abReserved))) Log2(("ISO/UDF: %-32s\n%.88RhxD\n", "Hdr.abReserved[88]:", &pDesc->ContentsUse.Hdr.abReserved[0])); } else if (!ASMMemIsZero(&pDesc->ContentsUse.ab[0], sizeof(pDesc->ContentsUse.ab))) Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ContentsUse.ab[128]:", &pDesc->ContentsUse.ab[0])); UDF_LOG2_MEMBER(pDesc, "#010RX32", uAccessType); UDF_LOG2_MEMBER(pDesc, "#010RX32", offLocation); UDF_LOG2_MEMBER(pDesc, "#010RX32", cSectors); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation); if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab))) Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "ImplementationUse.ab[128]:", &pDesc->ImplementationUse.ab[0])); if (!ASMMemIsZero(&pDesc->abReserved[0], sizeof(pDesc->abReserved))) Log2(("ISO/UDF: %-32s\n%.156RhxD\n", "ImplementationUse.ab[156]:", &pDesc->abReserved[0])); } #endif /* * Check if this is a newer revision of an existing primary volume descriptor. */ PUDFPARTITIONDESC pEndianConvert = NULL; uint32_t i = pInfo->cPartitions; while (i--> 0) if (pDesc->uPartitionNo == pInfo->apPartitions[i]->uPartitionNo) { if (RT_LE2H_U32(pDesc->uVolumeDescSeqNo) >= pInfo->apPartitions[i]->uVolumeDescSeqNo) { Log(("ISO/UDF: Partition descriptor for part %#u prevails over previous! (%u >= %u)\n", pDesc->uPartitionNo, RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo)); pEndianConvert = pInfo->apPartitions[i]; memcpy(pEndianConvert, pDesc, sizeof(*pDesc)); } else Log(("ISO/UDF: Partition descriptor for part %#u has a lower sequence number than the previous! (%u < %u)\n", pDesc->uPartitionNo, RT_LE2H_U32(pDesc->uVolumeDescSeqNo), pInfo->apPartitions[i]->uVolumeDescSeqNo)); break; } if (i >= pInfo->cPartitions) { /* * It wasn't. Append it. */ i = pInfo->cPartitions; if (i < RT_ELEMENTS(pInfo->apPartitions)) { pInfo->apPartitions[i] = pEndianConvert = (PUDFPARTITIONDESC)RTMemDup(pDesc, sizeof(*pDesc)); if (pEndianConvert) pInfo->cPartitions = i + 1; else return VERR_NO_MEMORY; Log2(("ISO/UDF: ++New partition descriptor.\n")); } else return RTERRINFO_LOG_SET(pErrInfo, VERR_ISOFS_TOO_MANY_PDS, "Too many physical volume descriptors"); } #ifdef RT_BIG_ENDIAN /* * Do endian conversion of the descriptor. */ if (pEndianConvert) { AssertFailed(); } #else RT_NOREF(pEndianConvert); #endif return VINF_SUCCESS; } /** * Processes an implementation use descriptor in the VDS (UDF). * * @returns IPRT status code. * @param pInfo Where we gather descriptor information. * @param pDesc The descriptor. * @param pErrInfo Where to return extended error information. */ static int rtFsIsoVolProcessUdfImplUseVolDesc(PRTFSISOVDSINFO pInfo, PCUDFIMPLEMENTATIONUSEVOLUMEDESC pDesc, PRTERRINFO pErrInfo) { #ifdef LOG_ENABLED Log(("ISO/UDF: Implementation use volume descriptor at sector %#RX32\n", pDesc->Tag.offTag)); if (LogIs2Enabled()) { UDF_LOG2_MEMBER(pDesc, "#010RX32", uVolumeDescSeqNo); UDF_LOG2_MEMBER_ENTITY_ID(pDesc, idImplementation); if (UDF_ENTITY_ID_EQUALS(&pDesc->idImplementation, UDF_ENTITY_ID_IUVD_IMPLEMENTATION)) { UDF_LOG2_MEMBER_CHARSPEC(&pDesc->ImplementationUse, Lvi.Charset); UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achVolumeID); UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo1); UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo2); UDF_LOG2_MEMBER_DSTRING(&pDesc->ImplementationUse, Lvi.achInfo3); UDF_LOG2_MEMBER_ENTITY_ID(&pDesc->ImplementationUse, Lvi.idImplementation); if (!ASMMemIsZero(&pDesc->ImplementationUse.Lvi.abUse[0], sizeof(pDesc->ImplementationUse.Lvi.abUse))) Log2(("ISO/UDF: %-32s\n%.128RhxD\n", "Lvi.abUse[128]:", &pDesc->ImplementationUse.Lvi.abUse[0])); } else if (!ASMMemIsZero(&pDesc->ImplementationUse.ab[0], sizeof(pDesc->ImplementationUse.ab))) Log2(("ISO/UDF: %-32s\n%.460RhxD\n", "ImplementationUse.ab[460]:", &pDesc->ImplementationUse.ab[0])); } #endif RT_NOREF(pInfo, pDesc, pErrInfo); return VINF_SUCCESS; } typedef struct RTFSISOSEENSEQENCES { /** Number of sequences we've seen thus far. */ uint32_t cSequences; /** The per sequence data. */ struct { uint64_t off; /**< Byte offset of the sequence. */ uint32_t cb; /**< Size of the sequence. */ } aSequences[8]; } RTFSISOSEENSEQENCES; typedef RTFSISOSEENSEQENCES *PRTFSISOSEENSEQENCES; /** * Process a VDS sequence, recursively dealing with volume descriptor pointers. * * This function only gathers information from the sequence, handling the * prevailing descriptor fun. * * @returns IPRT status code. * @param pThis The instance. * @param pInfo Where to store info from the VDS sequence. * @param offSeq The byte offset of the sequence. * @param cbSeq The length of the sequence. * @param pbBuf Read buffer. * @param cbBuf Size of the read buffer. This is at least one * sector big. * @param cNestings The VDS nesting depth. * @param pErrInfo Where to return extended error info. */ static int rtFsIsoVolReadAndProcessUdfVdsSeq(PRTFSISOVOL pThis, PRTFSISOVDSINFO pInfo, uint64_t offSeq, uint32_t cbSeq, uint8_t *pbBuf, size_t cbBuf, uint32_t cNestings, PRTERRINFO pErrInfo) { AssertReturn(cbBuf >= pThis->cbSector, VERR_INTERNAL_ERROR); /* * Check nesting depth. */ if (cNestings > 5) return RTERRINFO_LOG_SET(pErrInfo, VERR_TOO_MUCH_DATA, "The volume descriptor sequence (VDS) is nested too deeply."); /* * Do the processing sector by sector to keep things simple. */ uint32_t offInSeq = 0; while (offInSeq < cbSeq) { int rc; /* * Read the next sector. Zero pad if less that a sector. */ Assert((offInSeq & (pThis->cbSector - 1)) == 0); rc = RTVfsFileReadAt(pThis->hVfsBacking, offSeq + offInSeq, pbBuf, pThis->cbSector, NULL); if (RT_FAILURE(rc)) return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Error reading VDS content at %RX64 (LB %#x): %Rrc", offSeq + offInSeq, pThis->cbSector, rc); if (cbSeq - offInSeq < pThis->cbSector) memset(&pbBuf[cbSeq - offInSeq], 0, pThis->cbSector - (cbSeq - offInSeq)); /* * Check tag. */ PCUDFTAG pTag = (PCUDFTAG)pbBuf; rc = rtFsIsoVolValidateUdfDescTagAndCrc(pTag, pThis->cbSector, UINT16_MAX, (offSeq + offInSeq) / pThis->cbSector, pErrInfo); if ( RT_SUCCESS(rc) || ( rc == VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC && ( pTag->idTag == UDF_TAG_ID_LOGICAL_VOLUME_INTEGRITY_DESC || pTag->idTag == UDF_TAG_ID_LOGICAL_VOLUME_DESC || pTag->idTag == UDF_TAG_ID_UNALLOCATED_SPACE_DESC ) ) ) { switch (pTag->idTag) { case UDF_TAG_ID_PRIMARY_VOL_DESC: rc = rtFsIsoVolProcessUdfPrimaryVolDesc(pInfo, (PCUDFPRIMARYVOLUMEDESC)pTag, pErrInfo); break; case UDF_TAG_ID_IMPLEMENTATION_USE_VOLUME_DESC: rc = rtFsIsoVolProcessUdfImplUseVolDesc(pInfo, (PCUDFIMPLEMENTATIONUSEVOLUMEDESC)pTag, pErrInfo); break; case UDF_TAG_ID_PARTITION_DESC: rc = rtFsIsoVolProcessUdfPartitionDesc(pInfo, (PCUDFPARTITIONDESC)pTag, pErrInfo); break; case UDF_TAG_ID_LOGICAL_VOLUME_DESC: if (rc != VERR_ISOFS_INSUFFICIENT_DATA_FOR_DESC_CRC) rc = rtFsIsoVolProcessUdfLogicalVolumeDesc(pInfo, (PCUDFLOGICALVOLUMEDESC)pTag, pThis->cbSector, pErrInfo); else rc = VERR_ISOFS_TOO_BIT_PARTMAP_IN_LVD; break; case UDF_TAG_ID_LOGICAL_VOLUME_INTEGRITY_DESC: Log(("ISO/UDF: Ignoring logical volume integrity descriptor at offset %#RX64.\n", offSeq + offInSeq)); rc = VINF_SUCCESS; break; case UDF_TAG_ID_UNALLOCATED_SPACE_DESC: Log(("ISO/UDF: Ignoring unallocated space descriptor at offset %#RX64.\n", offSeq + offInSeq)); rc = VINF_SUCCESS; break; case UDF_TAG_ID_ANCHOR_VOLUME_DESC_PTR: Log(("ISO/UDF: Ignoring AVDP in VDS (at offset %#RX64).\n", offSeq + offInSeq)); rc = VINF_SUCCESS; break; case UDF_TAG_ID_VOLUME_DESC_PTR: { PCUDFVOLUMEDESCPTR pVdp = (PCUDFVOLUMEDESCPTR)pTag; Log(("ISO/UDF: Processing volume descriptor pointer at offset %#RX64: %#x LB %#x (seq %#x); cNestings=%d\n", offSeq + offInSeq, pVdp->NextVolumeDescSeq.off, pVdp->NextVolumeDescSeq.cb, pVdp->uVolumeDescSeqNo, cNestings)); rc = rtFsIsoVolReadAndProcessUdfVdsSeq(pThis, pInfo, (uint64_t)pVdp->NextVolumeDescSeq.off * pThis->cbSector, pVdp->NextVolumeDescSeq.cb, pbBuf, cbBuf, cNestings + 1, pErrInfo); break; } case UDF_TAG_ID_TERMINATING_DESC: Log(("ISO/UDF: Terminating descriptor at offset %#RX64\n", offSeq + offInSeq)); return VINF_SUCCESS; default: return RTERRINFO_LOG_SET_F(pErrInfo, VERR_ISOFS_UNEXPECTED_VDS_DESC, "Unexpected/unknown VDS descriptor %#x at byte offset %#RX64", pThis->cbSector, offSeq + offInSeq); } if (RT_FAILURE(rc)) return rc; } /* The descriptor sequence is usually zero padded to 16 sectors. Just ignore zero descriptors. */ else if (rc != VERR_ISOFS_TAG_IS_ALL_ZEROS) return rc; /* * Advance. */ offInSeq += pThis->cbSector; } return VINF_SUCCESS; } /** * Processes a volume descriptor sequence (VDS). * * @returns IPRT status code. * @param pThis The instance. * @param offSeq The byte offset of the sequence. * @param cbSeq The length of the sequence. * @param pSeenSequences Structure where to keep track of VDSes we've already * processed, to avoid redoing one that we don't * understand. * @param pbBuf Read buffer. * @param cbBuf Size of the read buffer. This is at least one * sector big. * @param pErrInfo Where to report extended error information. */ static int rtFsIsoVolReadAndProcessUdfVds(PRTFSISOVOL pThis, uint64_t offSeq, uint32_t cbSeq, PRTFSISOSEENSEQENCES pSeenSequences, uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo) { /* * Skip if already seen. */ uint32_t i = pSeenSequences->cSequences; while (i-- > 0) if ( pSeenSequences->aSequences[i].off == offSeq && pSeenSequences->aSequences[i].cb == cbSeq) return VERR_NOT_FOUND; /* Not seen, so add it. */ Assert(pSeenSequences->cSequences + 1 <= RT_ELEMENTS(pSeenSequences->aSequences)); pSeenSequences->aSequences[pSeenSequences->cSequences].cb = cbSeq; pSeenSequences->aSequences[pSeenSequences->cSequences].off = offSeq; pSeenSequences->cSequences++; LogFlow(("ISO/UDF: Processing anchor volume descriptor sequence at offset %#RX64 LB %#RX32\n", offSeq, cbSeq)); /* * Gather relevant descriptor info from the VDS then process it and on * success copy it into the instance. * * The processing has to be done in a different function because there may * be links to sub-sequences that needs to be processed. We do this by * recursing and check that we don't go to deep. */ RTFSISOVDSINFO Info; RT_ZERO(Info); int rc = rtFsIsoVolReadAndProcessUdfVdsSeq(pThis, &Info, offSeq, cbSeq, pbBuf, cbBuf, 0, pErrInfo); if (RT_SUCCESS(rc)) { rc = rtFsIsoVolProcessUdfVdsSeqInfo(pThis, &Info, pErrInfo); if (RT_SUCCESS(rc)) rc = rtFsIsoVolProcessUdfFileSetDescs(pThis, pbBuf, cbBuf, pErrInfo); } /* * Clean up info. */ i = Info.cPrimaryVols; while (i-- > 0) RTMemFree(Info.apPrimaryVols[i]); i = Info.cLogicalVols; while (i-- > 0) RTMemFree(Info.apLogicalVols[i]); i = Info.cPartitions; while (i-- > 0) RTMemFree(Info.apPartitions[i]); RTMemFree(Info.paPartMaps); return rc; } static int rtFsIsoVolReadAndHandleUdfAvdp(PRTFSISOVOL pThis, uint64_t offAvdp, uint8_t *pbBuf, size_t cbBuf, PRTFSISOSEENSEQENCES pSeenSequences, PRTERRINFO pErrInfo) { /* * Try read the descriptor and validate its tag. */ PUDFANCHORVOLUMEDESCPTR pAvdp = (PUDFANCHORVOLUMEDESCPTR)pbBuf; size_t cbAvdpRead = RT_MIN(pThis->cbSector, cbBuf); int rc = RTVfsFileReadAt(pThis->hVfsBacking, offAvdp, pAvdp, cbAvdpRead, NULL); if (RT_SUCCESS(rc)) { rc = rtFsIsoVolValidateUdfDescTag(&pAvdp->Tag, UDF_TAG_ID_ANCHOR_VOLUME_DESC_PTR, offAvdp / pThis->cbSector, pErrInfo); if (RT_SUCCESS(rc)) { Log2(("ISO/UDF: AVDP: MainVolumeDescSeq=%#RX32 LB %#RX32, ReserveVolumeDescSeq=%#RX32 LB %#RX32\n", pAvdp->MainVolumeDescSeq.off, pAvdp->MainVolumeDescSeq.cb, pAvdp->ReserveVolumeDescSeq.off, pAvdp->ReserveVolumeDescSeq.cb)); /* * Try the main sequence if it looks sane. */ UDFEXTENTAD const ReserveVolumeDescSeq = pAvdp->ReserveVolumeDescSeq; if ( pAvdp->MainVolumeDescSeq.off < pThis->cBackingSectors && (uint64_t)pAvdp->MainVolumeDescSeq.off + (pAvdp->MainVolumeDescSeq.cb + pThis->cbSector - 1) / pThis->cbSector <= pThis->cBackingSectors) { rc = rtFsIsoVolReadAndProcessUdfVds(pThis, (uint64_t)pAvdp->MainVolumeDescSeq.off * pThis->cbSector, pAvdp->MainVolumeDescSeq.cb, pSeenSequences, pbBuf, cbBuf, pErrInfo); if (RT_SUCCESS(rc)) return rc; } else rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_FOUND, "MainVolumeDescSeq is out of bounds: sector %#RX32 LB %#RX32 bytes, image is %#RX64 sectors", pAvdp->MainVolumeDescSeq.off, pAvdp->MainVolumeDescSeq.cb, pThis->cBackingSectors); if (ReserveVolumeDescSeq.cb > 0) { if ( ReserveVolumeDescSeq.off < pThis->cBackingSectors && (uint64_t)ReserveVolumeDescSeq.off + (ReserveVolumeDescSeq.cb + pThis->cbSector - 1) / pThis->cbSector <= pThis->cBackingSectors) { rc = rtFsIsoVolReadAndProcessUdfVds(pThis, (uint64_t)ReserveVolumeDescSeq.off * pThis->cbSector, ReserveVolumeDescSeq.cb, pSeenSequences, pbBuf, cbBuf, pErrInfo); if (RT_SUCCESS(rc)) return rc; } else if (RT_SUCCESS(rc)) rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_FOUND, "ReserveVolumeDescSeq is out of bounds: sector %#RX32 LB %#RX32 bytes, image is %#RX64 sectors", ReserveVolumeDescSeq.off, ReserveVolumeDescSeq.cb, pThis->cBackingSectors); } } } else rc = RTERRINFO_LOG_SET_F(pErrInfo, rc, "Error reading sector at offset %#RX64 (anchor volume descriptor pointer): %Rrc", offAvdp, rc); return rc; } /** * Goes looking for UDF when we've seens a volume recognition sequence. * * @returns IPRT status code. * @param pThis The volume instance data. * @param puUdfLevel The UDF level indicated by the VRS. * @param offUdfBootVolDesc The offset of the BOOT2 descriptor, UINT64_MAX * if not encountered. * @param pbBuf Buffer for reading into. * @param cbBuf The size of the buffer. At least one sector. * @param pErrInfo Where to return extended error info. */ static int rtFsIsoVolHandleUdfDetection(PRTFSISOVOL pThis, uint8_t *puUdfLevel, uint64_t offUdfBootVolDesc, uint8_t *pbBuf, size_t cbBuf, PRTERRINFO pErrInfo) { NOREF(offUdfBootVolDesc); /* * There are up to three anchor volume descriptor pointers that can give us * two different descriptor sequences each. Usually, the different AVDP * structures points to the same two sequences. The idea here is that * sectors may deteriorate and become unreadable, and we're supposed to try * out alternative sectors to get the job done. If we really took this * seriously, we could try read all sequences in parallel and use the * sectors that are good. However, we'll try keep things reasonably simple * since we'll most likely be reading from hard disks rather than optical * media. * * We keep track of which sequences we've processed so we don't try to do it * again when alternative AVDP sectors points to the same sequences. */ pThis->Udf.uLevel = *puUdfLevel; RTFSISOSEENSEQENCES SeenSequences; RT_ZERO(SeenSequences); int rc1 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, 256 * pThis->cbSector, pbBuf, cbBuf, &SeenSequences, pErrInfo); if (RT_SUCCESS(rc1)) return rc1; int rc2 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, pThis->cbBacking - 256 * pThis->cbSector, pbBuf, cbBuf, &SeenSequences, pErrInfo); if (RT_SUCCESS(rc2)) return rc2; int rc3 = rtFsIsoVolReadAndHandleUdfAvdp(pThis, pThis->cbBacking - pThis->cbSector, pbBuf, cbBuf, &SeenSequences, pErrInfo); if (RT_SUCCESS(rc3)) return rc3; /* * Return failure if the alternatives have been excluded. * * Note! The error info won't be correct here. */ pThis->Udf.uLevel = *puUdfLevel = 0; if (RTFSISO9660_F_IS_ONLY_TYPE(pThis->fFlags, RTFSISO9660_F_NO_UDF)) return rc1 != VERR_NOT_FOUND ? rc1 : rc2 != VERR_NOT_FOUND ? rc2 : rc3; return VINF_SUCCESS; } #ifdef LOG_ENABLED /** Logging helper. */ static size_t rtFsIsoVolGetStrippedLength(const char *pachField, size_t cchField) { while (cchField > 0 && pachField[cchField - 1] == ' ') cchField--; return cchField; } /** Logging helper. */ static char *rtFsIsoVolGetMaybeUtf16Be(const char *pachField, size_t cchField, char *pszDst, size_t cbDst) { /* Check the format by looking for zero bytes. ISO-9660 doesn't allow zeros. This doesn't have to be a UTF-16BE string. */ size_t cFirstZeros = 0; size_t cSecondZeros = 0; for (size_t off = 0; off + 1 < cchField; off += 2) { cFirstZeros += pachField[off] == '\0'; cSecondZeros += pachField[off + 1] == '\0'; } int rc = VINF_SUCCESS; char *pszTmp = &pszDst[10]; size_t cchRet = 0; if (cFirstZeros > cSecondZeros) { /* UTF-16BE / UTC-2BE: */ if (cchField & 1) { if (pachField[cchField - 1] == '\0' || pachField[cchField - 1] == ' ') cchField--; else rc = VERR_INVALID_UTF16_ENCODING; } if (RT_SUCCESS(rc)) { while ( cchField >= 2 && pachField[cchField - 1] == ' ' && pachField[cchField - 2] == '\0') cchField -= 2; rc = RTUtf16BigToUtf8Ex((PCRTUTF16)pachField, cchField / sizeof(RTUTF16), &pszTmp, cbDst - 10 - 1, &cchRet); } if (RT_SUCCESS(rc)) { pszDst[0] = 'U'; pszDst[1] = 'T'; pszDst[2] = 'F'; pszDst[3] = '-'; pszDst[4] = '1'; pszDst[5] = '6'; pszDst[6] = 'B'; pszDst[7] = 'E'; pszDst[8] = ':'; pszDst[9] = '\''; pszDst[10 + cchRet] = '\''; pszDst[10 + cchRet + 1] = '\0'; } else RTStrPrintf(pszDst, cbDst, "UTF-16BE: %.*Rhxs", cchField, pachField); } else if (cSecondZeros > 0) { /* Little endian UTF-16 / UCS-2 (ASSUMES host is little endian, sorry) */ if (cchField & 1) { if (pachField[cchField - 1] == '\0' || pachField[cchField - 1] == ' ') cchField--; else rc = VERR_INVALID_UTF16_ENCODING; } if (RT_SUCCESS(rc)) { while ( cchField >= 2 && pachField[cchField - 1] == '\0' && pachField[cchField - 2] == ' ') cchField -= 2; rc = RTUtf16ToUtf8Ex((PCRTUTF16)pachField, cchField / sizeof(RTUTF16), &pszTmp, cbDst - 10 - 1, &cchRet); } if (RT_SUCCESS(rc)) { pszDst[0] = 'U'; pszDst[1] = 'T'; pszDst[2] = 'F'; pszDst[3] = '-'; pszDst[4] = '1'; pszDst[5] = '6'; pszDst[6] = 'L'; pszDst[7] = 'E'; pszDst[8] = ':'; pszDst[9] = '\''; pszDst[10 + cchRet] = '\''; pszDst[10 + cchRet + 1] = '\0'; } else RTStrPrintf(pszDst, cbDst, "UTF-16LE: %.*Rhxs", cchField, pachField); } else { /* ASSUME UTF-8/ASCII. */ while ( cchField > 0 && pachField[cchField - 1] == ' ') cchField--; rc = RTStrValidateEncodingEx(pachField, cchField, RTSTR_VALIDATE_ENCODING_EXACT_LENGTH); if (RT_SUCCESS(rc)) RTStrPrintf(pszDst, cbDst, "UTF-8: '%.*s'", cchField, pachField); else RTStrPrintf(pszDst, cbDst, "UNK-8: %.*Rhxs", cchField, pachField); } return pszDst; } /** * Logs the primary or supplementary volume descriptor * * @param pVolDesc The descriptor. */ static void rtFsIsoVolLogPrimarySupplementaryVolDesc(PCISO9660SUPVOLDESC pVolDesc) { if (LogIs2Enabled()) { char szTmp[384]; Log2(("ISO9660: fVolumeFlags: %#RX8\n", pVolDesc->fVolumeFlags)); Log2(("ISO9660: achSystemId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achSystemId, sizeof(pVolDesc->achSystemId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achVolumeId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achVolumeId, sizeof(pVolDesc->achVolumeId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: Unused73: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->Unused73.be), RT_LE2H_U32(pVolDesc->Unused73.le))); Log2(("ISO9660: VolumeSpaceSize: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le))); Log2(("ISO9660: abEscapeSequences: '%.*s'\n", rtFsIsoVolGetStrippedLength((char *)pVolDesc->abEscapeSequences, sizeof(pVolDesc->abEscapeSequences)), pVolDesc->abEscapeSequences)); Log2(("ISO9660: cVolumesInSet: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le))); Log2(("ISO9660: VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le))); Log2(("ISO9660: cbLogicalBlock: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le))); Log2(("ISO9660: cbPathTable: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->cbPathTable.be), RT_LE2H_U32(pVolDesc->cbPathTable.le))); Log2(("ISO9660: offTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offTypeLPathTable))); Log2(("ISO9660: offOptionalTypeLPathTable: %#RX32\n", RT_LE2H_U32(pVolDesc->offOptionalTypeLPathTable))); Log2(("ISO9660: offTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offTypeMPathTable))); Log2(("ISO9660: offOptionalTypeMPathTable: %#RX32\n", RT_BE2H_U32(pVolDesc->offOptionalTypeMPathTable))); Log2(("ISO9660: achVolumeSetId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achVolumeSetId, sizeof(pVolDesc->achVolumeSetId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achPublisherId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achPublisherId, sizeof(pVolDesc->achPublisherId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achDataPreparerId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achDataPreparerId, sizeof(pVolDesc->achDataPreparerId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achApplicationId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achApplicationId, sizeof(pVolDesc->achApplicationId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achCopyrightFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achCopyrightFileId, sizeof(pVolDesc->achCopyrightFileId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achAbstractFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achAbstractFileId, sizeof(pVolDesc->achAbstractFileId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: achBibliographicFileId: %s\n", rtFsIsoVolGetMaybeUtf16Be(pVolDesc->achBibliographicFileId, sizeof(pVolDesc->achBibliographicFileId), szTmp, sizeof(szTmp)) )); Log2(("ISO9660: BirthTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n", pVolDesc->BirthTime.achYear, pVolDesc->BirthTime.achMonth, pVolDesc->BirthTime.achDay, pVolDesc->BirthTime.achHour, pVolDesc->BirthTime.achMinute, pVolDesc->BirthTime.achSecond, pVolDesc->BirthTime.achCentisecond, pVolDesc->BirthTime.offUtc*4/60)); Log2(("ISO9660: ModifyTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n", pVolDesc->ModifyTime.achYear, pVolDesc->ModifyTime.achMonth, pVolDesc->ModifyTime.achDay, pVolDesc->ModifyTime.achHour, pVolDesc->ModifyTime.achMinute, pVolDesc->ModifyTime.achSecond, pVolDesc->ModifyTime.achCentisecond, pVolDesc->ModifyTime.offUtc*4/60)); Log2(("ISO9660: ExpireTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n", pVolDesc->ExpireTime.achYear, pVolDesc->ExpireTime.achMonth, pVolDesc->ExpireTime.achDay, pVolDesc->ExpireTime.achHour, pVolDesc->ExpireTime.achMinute, pVolDesc->ExpireTime.achSecond, pVolDesc->ExpireTime.achCentisecond, pVolDesc->ExpireTime.offUtc*4/60)); Log2(("ISO9660: EffectiveTime: %.4s-%.2s-%.2s %.2s:%.2s:%.2s.%.2s%+03d\n", pVolDesc->EffectiveTime.achYear, pVolDesc->EffectiveTime.achMonth, pVolDesc->EffectiveTime.achDay, pVolDesc->EffectiveTime.achHour, pVolDesc->EffectiveTime.achMinute, pVolDesc->EffectiveTime.achSecond, pVolDesc->EffectiveTime.achCentisecond, pVolDesc->EffectiveTime.offUtc*4/60)); Log2(("ISO9660: bFileStructureVersion: %#RX8\n", pVolDesc->bFileStructureVersion)); Log2(("ISO9660: bReserved883: %#RX8\n", pVolDesc->bReserved883)); Log2(("ISO9660: RootDir.cbDirRec: %#RX8\n", pVolDesc->RootDir.DirRec.cbDirRec)); Log2(("ISO9660: RootDir.cExtAttrBlocks: %#RX8\n", pVolDesc->RootDir.DirRec.cExtAttrBlocks)); Log2(("ISO9660: RootDir.offExtent: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.offExtent.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.offExtent.le))); Log2(("ISO9660: RootDir.cbData: {%#RX32,%#RX32}\n", RT_BE2H_U32(pVolDesc->RootDir.DirRec.cbData.be), RT_LE2H_U32(pVolDesc->RootDir.DirRec.cbData.le))); Log2(("ISO9660: RootDir.RecTime: %04u-%02u-%02u %02u:%02u:%02u%+03d\n", pVolDesc->RootDir.DirRec.RecTime.bYear + 1900, pVolDesc->RootDir.DirRec.RecTime.bMonth, pVolDesc->RootDir.DirRec.RecTime.bDay, pVolDesc->RootDir.DirRec.RecTime.bHour, pVolDesc->RootDir.DirRec.RecTime.bMinute, pVolDesc->RootDir.DirRec.RecTime.bSecond, pVolDesc->RootDir.DirRec.RecTime.offUtc*4/60)); Log2(("ISO9660: RootDir.RecTime.fFileFlags: %RX8\n", pVolDesc->RootDir.DirRec.fFileFlags)); Log2(("ISO9660: RootDir.RecTime.bFileUnitSize: %RX8\n", pVolDesc->RootDir.DirRec.bFileUnitSize)); Log2(("ISO9660: RootDir.RecTime.bInterleaveGapSize: %RX8\n", pVolDesc->RootDir.DirRec.bInterleaveGapSize)); Log2(("ISO9660: RootDir.RecTime.VolumeSeqNo: {%#RX16,%#RX16}\n", RT_BE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->RootDir.DirRec.VolumeSeqNo.le))); Log2(("ISO9660: RootDir.RecTime.bFileIdLength: %RX8\n", pVolDesc->RootDir.DirRec.bFileIdLength)); Log2(("ISO9660: RootDir.RecTime.achFileId: '%.*s'\n", pVolDesc->RootDir.DirRec.bFileIdLength, pVolDesc->RootDir.DirRec.achFileId)); uint32_t offSysUse = RT_UOFFSETOF_DYN(ISO9660DIRREC, achFileId[pVolDesc->RootDir.DirRec.bFileIdLength]) + !(pVolDesc->RootDir.DirRec.bFileIdLength & 1); if (offSysUse < pVolDesc->RootDir.DirRec.cbDirRec) { Log2(("ISO9660: RootDir System Use:\n%.*RhxD\n", pVolDesc->RootDir.DirRec.cbDirRec - offSysUse, &pVolDesc->RootDir.ab[offSysUse])); } } } #endif /* LOG_ENABLED */ /** * Deal with a root directory from a primary or supplemental descriptor. * * @returns IPRT status code. * @param pThis The ISO 9660 instance being initialized. * @param pRootDir The root directory record to check out. * @param pDstRootDir Where to store a copy of the root dir record. * @param pErrInfo Where to return additional error info. Can be NULL. */ static int rtFsIsoVolHandleRootDir(PRTFSISOVOL pThis, PCISO9660DIRREC pRootDir, PISO9660DIRREC pDstRootDir, PRTERRINFO pErrInfo) { if (pRootDir->cbDirRec < RT_UOFFSETOF(ISO9660DIRREC, achFileId)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Root dir record size is too small: %#x (min %#x)", pRootDir->cbDirRec, RT_UOFFSETOF(ISO9660DIRREC, achFileId)); if (!(pRootDir->fFileFlags & ISO9660_FILE_FLAGS_DIRECTORY)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Root dir is not flagged as directory: %#x", pRootDir->fFileFlags); if (pRootDir->fFileFlags & ISO9660_FILE_FLAGS_MULTI_EXTENT) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Root dir is cannot be multi-extent: %#x", pRootDir->fFileFlags); if (RT_LE2H_U32(pRootDir->cbData.le) != RT_BE2H_U32(pRootDir->cbData.be)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir size: {%#RX32,%#RX32}", RT_BE2H_U32(pRootDir->cbData.be), RT_LE2H_U32(pRootDir->cbData.le)); if (RT_LE2H_U32(pRootDir->cbData.le) == 0) return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Zero sized root dir"); if (RT_LE2H_U32(pRootDir->offExtent.le) != RT_BE2H_U32(pRootDir->offExtent.be)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir extent: {%#RX32,%#RX32}", RT_BE2H_U32(pRootDir->offExtent.be), RT_LE2H_U32(pRootDir->offExtent.le)); if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != RT_BE2H_U16(pRootDir->VolumeSeqNo.be)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid root dir volume sequence ID: {%#RX16,%#RX16}", RT_BE2H_U16(pRootDir->VolumeSeqNo.be), RT_LE2H_U16(pRootDir->VolumeSeqNo.le)); if (RT_LE2H_U16(pRootDir->VolumeSeqNo.le) != pThis->idPrimaryVol) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Expected root dir to have same volume sequence number as primary volume: %#x, expected %#x", RT_LE2H_U16(pRootDir->VolumeSeqNo.le), pThis->idPrimaryVol); /* * Seems okay, copy it. */ *pDstRootDir = *pRootDir; return VINF_SUCCESS; } /** * Deal with a primary volume descriptor. * * @returns IPRT status code. * @param pThis The ISO 9660 instance being initialized. * @param pVolDesc The volume descriptor to handle. * @param offVolDesc The disk offset of the volume descriptor. * @param pRootDir Where to return a copy of the root directory record. * @param poffRootDirRec Where to return the disk offset of the root dir. * @param pErrInfo Where to return additional error info. Can be NULL. */ static int rtFsIsoVolHandlePrimaryVolDesc(PRTFSISOVOL pThis, PCISO9660PRIMARYVOLDESC pVolDesc, uint32_t offVolDesc, PISO9660DIRREC pRootDir, uint64_t *poffRootDirRec, PRTERRINFO pErrInfo) { if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion); /* * Take down the location of the primary volume descriptor so we can get * the volume lable and other info from it later. */ pThis->offPrimaryVolDesc = offVolDesc; /* * We need the block size ... */ pThis->cbBlock = RT_LE2H_U16(pVolDesc->cbLogicalBlock.le); if ( pThis->cbBlock != RT_BE2H_U16(pVolDesc->cbLogicalBlock.be) || !RT_IS_POWER_OF_TWO(pThis->cbBlock) || pThis->cbBlock / pThis->cbSector < 1) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid logical block size: {%#RX16,%#RX16}", RT_BE2H_U16(pVolDesc->cbLogicalBlock.be), RT_LE2H_U16(pVolDesc->cbLogicalBlock.le)); if (pThis->cbBlock / pThis->cbSector > 128) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported block size: %#x\n", pThis->cbBlock); /* * ... volume space size ... */ pThis->cBlocksInPrimaryVolumeSpace = RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le); if (pThis->cBlocksInPrimaryVolumeSpace != RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume space size: {%#RX32,%#RX32}", RT_BE2H_U32(pVolDesc->VolumeSpaceSize.be), RT_LE2H_U32(pVolDesc->VolumeSpaceSize.le)); pThis->cbPrimaryVolumeSpace = pThis->cBlocksInPrimaryVolumeSpace * (uint64_t)pThis->cbBlock; /* * ... number of volumes in the set ... */ pThis->cVolumesInSet = RT_LE2H_U16(pVolDesc->cVolumesInSet.le); if ( pThis->cVolumesInSet != RT_BE2H_U16(pVolDesc->cVolumesInSet.be) || pThis->cVolumesInSet == 0) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume set size: {%#RX16,%#RX16}", RT_BE2H_U16(pVolDesc->cVolumesInSet.be), RT_LE2H_U16(pVolDesc->cVolumesInSet.le)); if (pThis->cVolumesInSet > 32) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Too large volume set size: %#x\n", pThis->cVolumesInSet); /* * ... primary volume sequence ID ... */ pThis->idPrimaryVol = RT_LE2H_U16(pVolDesc->VolumeSeqNo.le); if (pThis->idPrimaryVol != RT_BE2H_U16(pVolDesc->VolumeSeqNo.be)) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Invalid volume sequence ID: {%#RX16,%#RX16}", RT_BE2H_U16(pVolDesc->VolumeSeqNo.be), RT_LE2H_U16(pVolDesc->VolumeSeqNo.le)); if ( pThis->idPrimaryVol > pThis->cVolumesInSet || pThis->idPrimaryVol < 1) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Volume sequence ID out of of bound: %#x (1..%#x)\n", pThis->idPrimaryVol, pThis->cVolumesInSet); /* * ... and the root directory record. */ *poffRootDirRec = offVolDesc + RT_UOFFSETOF(ISO9660PRIMARYVOLDESC, RootDir.DirRec); return rtFsIsoVolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo); } /** * Deal with a supplementary volume descriptor. * * @returns IPRT status code. * @param pThis The ISO 9660 instance being initialized. * @param pVolDesc The volume descriptor to handle. * @param offVolDesc The disk offset of the volume descriptor. * @param pbUcs2Level Where to return the joliet level, if found. Caller * initializes this to zero, we'll return 1, 2 or 3 if * joliet was detected. * @param pRootDir Where to return the root directory, if found. * @param poffRootDirRec Where to return the disk offset of the root dir. * @param pErrInfo Where to return additional error info. Can be NULL. */ static int rtFsIsoVolHandleSupplementaryVolDesc(PRTFSISOVOL pThis, PCISO9660SUPVOLDESC pVolDesc, uint32_t offVolDesc, uint8_t *pbUcs2Level, PISO9660DIRREC pRootDir, uint64_t *poffRootDirRec, PRTERRINFO pErrInfo) { if (pVolDesc->bFileStructureVersion != ISO9660_FILE_STRUCTURE_VERSION) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported file structure version: %#x", pVolDesc->bFileStructureVersion); /* * Is this a joliet volume descriptor? If not, we probably don't need to * care about it. */ if ( pVolDesc->abEscapeSequences[0] != ISO9660_JOLIET_ESC_SEQ_0 || pVolDesc->abEscapeSequences[1] != ISO9660_JOLIET_ESC_SEQ_1 || ( pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1 && pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2 && pVolDesc->abEscapeSequences[2] != ISO9660_JOLIET_ESC_SEQ_2_LEVEL_3)) return VINF_SUCCESS; /* * Skip if joliet is unwanted. */ if (pThis->fFlags & RTFSISO9660_F_NO_JOLIET) return VINF_SUCCESS; /* * Check that the joliet descriptor matches the primary one. * Note! These are our assumptions and may be wrong. */ if (pThis->cbBlock == 0) return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Supplementary joliet volume descriptor is not supported when appearing before the primary volume descriptor"); if (ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock) != pThis->cbBlock) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Logical block size for joliet volume descriptor differs from primary: %#RX16 vs %#RX16\n", ISO9660_GET_ENDIAN(&pVolDesc->cbLogicalBlock), pThis->cbBlock); #if 0 /* Not necessary. */ /* Used to be !=, changed to > for ubuntu 20.10 and later. Wonder if they exclude a few files and thus end up with a different total. Obviously, this test is a big bogus, as we don't really seem to care about the value at all... */ if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize) > pThis->cBlocksInPrimaryVolumeSpace) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Volume space size for joliet volume descriptor differs from primary: %#RX32 vs %#RX32\n", ISO9660_GET_ENDIAN(&pVolDesc->VolumeSpaceSize), pThis->cBlocksInPrimaryVolumeSpace); #endif if (ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet) != pThis->cVolumesInSet) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Volume set size for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n", ISO9660_GET_ENDIAN(&pVolDesc->cVolumesInSet), pThis->cVolumesInSet); if (ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo) != pThis->idPrimaryVol) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Volume sequence ID for joliet volume descriptor differs from primary: %#RX16 vs %#RX32\n", ISO9660_GET_ENDIAN(&pVolDesc->VolumeSeqNo), pThis->idPrimaryVol); if (*pbUcs2Level != 0) return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one supplementary joliet volume descriptor"); /* * Switch to the joliet root dir as it has UTF-16 stuff in it. */ int rc = rtFsIsoVolHandleRootDir(pThis, &pVolDesc->RootDir.DirRec, pRootDir, pErrInfo); if (RT_SUCCESS(rc)) { *poffRootDirRec = offVolDesc + RT_UOFFSETOF(ISO9660SUPVOLDESC, RootDir.DirRec); *pbUcs2Level = pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_1 ? 1 : pVolDesc->abEscapeSequences[2] == ISO9660_JOLIET_ESC_SEQ_2_LEVEL_2 ? 2 : 3; Log(("ISO9660: Joliet with UCS-2 level %u\n", *pbUcs2Level)); /* * Take down the location of the secondary volume descriptor so we can get * the volume lable and other info from it later. */ pThis->offSecondaryVolDesc = offVolDesc; } return rc; } /** * Worker for RTFsIso9660VolOpen. * * @returns IPRT status code. * @param pThis The ISO VFS instance to initialize. * @param hVfsSelf The ISO VFS handle (no reference consumed). * @param hVfsBacking The file backing the alleged ISO file system. * Reference is consumed (via rtFsIsoVol_Close). * @param fFlags Flags, RTFSISO9660_F_XXX. * @param pErrInfo Where to return additional error info. Can be NULL. */ static int rtFsIsoVolTryInit(PRTFSISOVOL pThis, RTVFS hVfsSelf, RTVFSFILE hVfsBacking, uint32_t fFlags, PRTERRINFO pErrInfo) { uint32_t const cbSector = 2048; /* * First initialize the state so that rtFsIsoVol_Close won't trip up. */ pThis->hVfsSelf = hVfsSelf; pThis->hVfsBacking = hVfsBacking; /* Caller referenced it for us, we consume it; rtFsIsoVol_Close releases it. */ pThis->cbBacking = 0; pThis->cBackingSectors = 0; pThis->fFlags = fFlags; pThis->cbSector = cbSector; pThis->cbBlock = 0; pThis->cBlocksInPrimaryVolumeSpace = 0; pThis->cbPrimaryVolumeSpace = 0; pThis->cVolumesInSet = 0; pThis->idPrimaryVol = UINT32_MAX; pThis->fIsUtf16 = false; pThis->pRootDir = NULL; pThis->fHaveRock = false; pThis->offSuspSkip = 0; pThis->offRockBuf = UINT64_MAX; /* * Do init stuff that may fail. */ int rc = RTCritSectInit(&pThis->RockBufLock); AssertRCReturn(rc, rc); rc = RTVfsFileQuerySize(hVfsBacking, &pThis->cbBacking); if (RT_SUCCESS(rc)) pThis->cBackingSectors = pThis->cbBacking / pThis->cbSector; else return rc; /* * Read the volume descriptors starting at logical sector 16. */ union { uint8_t ab[RTFSISO_MAX_LOGICAL_BLOCK_SIZE]; uint16_t au16[RTFSISO_MAX_LOGICAL_BLOCK_SIZE / 2]; uint32_t au32[RTFSISO_MAX_LOGICAL_BLOCK_SIZE / 4]; ISO9660VOLDESCHDR VolDescHdr; ISO9660BOOTRECORD BootRecord; ISO9660PRIMARYVOLDESC PrimaryVolDesc; ISO9660SUPVOLDESC SupVolDesc; ISO9660VOLPARTDESC VolPartDesc; } Buf; RT_ZERO(Buf); uint64_t offRootDirRec = UINT64_MAX; ISO9660DIRREC RootDir; RT_ZERO(RootDir); uint64_t offJolietRootDirRec = UINT64_MAX; uint8_t bJolietUcs2Level = 0; ISO9660DIRREC JolietRootDir; RT_ZERO(JolietRootDir); uint8_t uUdfLevel = 0; uint64_t offUdfBootVolDesc = UINT64_MAX; uint32_t cPrimaryVolDescs = 0; uint32_t cSupplementaryVolDescs = 0; uint32_t cBootRecordVolDescs = 0; uint32_t offVolDesc = 16 * cbSector; enum { kStateStart = 0, kStateNoSeq, kStateCdSeq, kStateUdfSeq } enmState = kStateStart; for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector) { if (iVolDesc > 32) return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "More than 32 volume descriptors, doesn't seem right..."); /* Read the next one and check the signature. */ rc = RTVfsFileReadAt(hVfsBacking, offVolDesc, &Buf, cbSector, NULL); if (RT_FAILURE(rc)) return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc); #define MATCH_STD_ID(a_achStdId1, a_szStdId2) \ ( (a_achStdId1)[0] == (a_szStdId2)[0] \ && (a_achStdId1)[1] == (a_szStdId2)[1] \ && (a_achStdId1)[2] == (a_szStdId2)[2] \ && (a_achStdId1)[3] == (a_szStdId2)[3] \ && (a_achStdId1)[4] == (a_szStdId2)[4] ) #define MATCH_HDR(a_pStd, a_bType2, a_szStdId2, a_bVer2) \ ( MATCH_STD_ID((a_pStd)->achStdId, a_szStdId2) \ && (a_pStd)->bDescType == (a_bType2) \ && (a_pStd)->bDescVersion == (a_bVer2) ) /* * ISO 9660 ("CD001"). */ if ( ( enmState == kStateStart || enmState == kStateCdSeq || enmState == kStateNoSeq) && MATCH_STD_ID(Buf.VolDescHdr.achStdId, ISO9660VOLDESC_STD_ID) ) { enmState = kStateCdSeq; /* Do type specific handling. */ Log(("ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType)); if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY) { cPrimaryVolDescs++; if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion); #ifdef LOG_ENABLED rtFsIsoVolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc); #endif if (cPrimaryVolDescs == 1) rc = rtFsIsoVolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo); else if (cPrimaryVolDescs == 2) Log(("ISO9660: ignoring 2nd primary descriptor\n")); /* so we can read the w2k3 ifs kit */ else return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor"); } else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY) { cSupplementaryVolDescs++; if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion); #ifdef LOG_ENABLED rtFsIsoVolLogPrimarySupplementaryVolDesc(&Buf.SupVolDesc); #endif rc = rtFsIsoVolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir, &offJolietRootDirRec, pErrInfo); } else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD) { cBootRecordVolDescs++; } else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR) { if (!cPrimaryVolDescs) return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor"); enmState = kStateNoSeq; } else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType); } /* * UDF volume recognition sequence (VRS). */ else if ( ( enmState == kStateNoSeq || enmState == kStateStart) && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BEGIN, UDF_EXT_VOL_DESC_VERSION) ) { if (uUdfLevel == 0) enmState = kStateUdfSeq; else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BEA01 sequence is supported"); } else if ( enmState == kStateUdfSeq && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_02, UDF_EXT_VOL_DESC_VERSION) ) uUdfLevel = 2; else if ( enmState == kStateUdfSeq && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_03, UDF_EXT_VOL_DESC_VERSION) ) uUdfLevel = 3; else if ( enmState == kStateUdfSeq && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BOOT, UDF_EXT_VOL_DESC_VERSION) ) { if (offUdfBootVolDesc == UINT64_MAX) offUdfBootVolDesc = iVolDesc * cbSector; else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BOOT2 descriptor is supported"); } else if ( enmState == kStateUdfSeq && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_TERM, UDF_EXT_VOL_DESC_VERSION) ) { if (uUdfLevel != 0) enmState = kStateNoSeq; else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Found BEA01 & TEA01, but no NSR02 or NSR03 descriptors"); } /* * Unknown, probably the end. */ else if (enmState == kStateNoSeq) break; else if (enmState == kStateStart) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT, "Not ISO? Unable to recognize volume descriptor signature: %.5Rhxs", Buf.VolDescHdr.achStdId); else if (enmState == kStateCdSeq) { #if 1 /* The warp server for ebusiness update ISOs known as ACP2 & MCP2 ends up here, as they do in deed miss a terminator volume descriptor and we're now at the root directory already. Just detect this, ignore it and get on with things. */ Log(("rtFsIsoVolTryInit: Ignoring missing ISO 9660 terminator volume descriptor (found %.5Rhxs).\n", Buf.VolDescHdr.achStdId)); break; #else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Missing ISO 9660 terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId); #endif } else if (enmState == kStateUdfSeq) return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Missing UDF terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId); else return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT, "Unknown volume descriptor signature found at sector %u: %.5Rhxs", 16 + iVolDesc, Buf.VolDescHdr.achStdId); if (RT_FAILURE(rc)) return rc; } /* * If we found a UDF VRS and are interested in UDF, we have more work to do here. */ if (uUdfLevel > 0 && !(fFlags & RTFSISO9660_F_NO_UDF)) { Log(("rtFsIsoVolTryInit: uUdfLevel=%d\n", uUdfLevel)); rc = rtFsIsoVolHandleUdfDetection(pThis, &uUdfLevel, offUdfBootVolDesc, Buf.ab, sizeof(Buf), pErrInfo); if (RT_FAILURE(rc)) return rc; } /* * Decide which to prefer. * * By default we pick UDF over any of the two ISO 9960, there is currently * no way to override this without using the RTFSISO9660_F_NO_XXX options. * * If there isn't UDF, we may be faced with choosing between joliet and * rock ridge. The joliet option is generally favorable as we don't have * to guess wrt to the file name encoding. So, we'll pick that for now. * * Note! Should we change this preference for joliet, there fun wrt making sure * there really is rock ridge stuff in the primary volume as well as * making sure there really is anything of value in the primary volume. */ if (uUdfLevel > 0) { pThis->enmType = RTFSISOVOLTYPE_UDF; rc = rtFsIsoDirShrd_NewUdf(pThis, NULL /*pParent*/, &pThis->Udf.VolInfo.RootDirIcb, NULL /*pFileIdDesc*/, 0 /*offInDir*/, &pThis->pRootDir); /** @todo fall back on failure? */ return rc; } if (bJolietUcs2Level != 0) { pThis->enmType = RTFSISOVOLTYPE_JOLIET; pThis->fIsUtf16 = true; return rtFsIsoDirShrd_New9660(pThis, NULL, &JolietRootDir, 1, offJolietRootDirRec, NULL, &pThis->pRootDir); } pThis->enmType = RTFSISOVOLTYPE_ISO9960; return rtFsIsoDirShrd_New9660(pThis, NULL, &RootDir, 1, offRootDirRec, NULL, &pThis->pRootDir); } /** * Opens an ISO 9660 file system volume. * * @returns IPRT status code. * @param hVfsFileIn The file or device backing the volume. * @param fFlags RTFSISO9660_F_XXX. * @param phVfs Where to return the virtual file system handle. * @param pErrInfo Where to return additional error information. */ RTDECL(int) RTFsIso9660VolOpen(RTVFSFILE hVfsFileIn, uint32_t fFlags, PRTVFS phVfs, PRTERRINFO pErrInfo) { /* * Quick input validation. */ AssertPtrReturn(phVfs, VERR_INVALID_POINTER); *phVfs = NIL_RTVFS; AssertReturn(!(fFlags & ~RTFSISO9660_F_VALID_MASK), VERR_INVALID_FLAGS); uint32_t cRefs = RTVfsFileRetain(hVfsFileIn); AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE); /* * Create a new ISO VFS instance and try initialize it using the given input file. */ RTVFS hVfs = NIL_RTVFS; PRTFSISOVOL pThis = NULL; int rc = RTVfsNew(&g_rtFsIsoVolOps, sizeof(RTFSISOVOL), NIL_RTVFS, RTVFSLOCK_CREATE_RW, &hVfs, (void **)&pThis); if (RT_SUCCESS(rc)) { rc = rtFsIsoVolTryInit(pThis, hVfs, hVfsFileIn, fFlags, pErrInfo); if (RT_SUCCESS(rc)) *phVfs = hVfs; else RTVfsRelease(hVfs); } else RTVfsFileRelease(hVfsFileIn); return rc; } /** * @interface_method_impl{RTVFSCHAINELEMENTREG,pfnValidate} */ static DECLCALLBACK(int) rtVfsChainIsoFsVol_Validate(PCRTVFSCHAINELEMENTREG pProviderReg, PRTVFSCHAINSPEC pSpec, PRTVFSCHAINELEMSPEC pElement, uint32_t *poffError, PRTERRINFO pErrInfo) { RT_NOREF(pProviderReg, pSpec); /* * Basic checks. */ if (pElement->enmTypeIn != RTVFSOBJTYPE_FILE) return pElement->enmTypeIn == RTVFSOBJTYPE_INVALID ? VERR_VFS_CHAIN_CANNOT_BE_FIRST_ELEMENT : VERR_VFS_CHAIN_TAKES_FILE; if ( pElement->enmType != RTVFSOBJTYPE_VFS && pElement->enmType != RTVFSOBJTYPE_DIR) return VERR_VFS_CHAIN_ONLY_DIR_OR_VFS; if (pElement->cArgs > 1) return VERR_VFS_CHAIN_AT_MOST_ONE_ARG; /* * Parse the flag if present, save in pElement->uProvider. */ uint32_t fFlags = 0; if (pElement->cArgs > 0) { for (uint32_t iArg = 0; iArg < pElement->cArgs; iArg++) { const char *psz = pElement->paArgs[iArg].psz; if (*psz) { if (!strcmp(psz, "nojoliet")) fFlags |= RTFSISO9660_F_NO_JOLIET; else if (!strcmp(psz, "norock")) fFlags |= RTFSISO9660_F_NO_ROCK; else if (!strcmp(psz, "noudf")) fFlags |= RTFSISO9660_F_NO_UDF; else { *poffError = pElement->paArgs[iArg].offSpec; return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_CHAIN_INVALID_ARGUMENT, "Only knows: 'nojoliet' and 'norock'"); } } } } pElement->uProvider = fFlags; return VINF_SUCCESS; } /** * @interface_method_impl{RTVFSCHAINELEMENTREG,pfnInstantiate} */ static DECLCALLBACK(int) rtVfsChainIsoFsVol_Instantiate(PCRTVFSCHAINELEMENTREG pProviderReg, PCRTVFSCHAINSPEC pSpec, PCRTVFSCHAINELEMSPEC pElement, RTVFSOBJ hPrevVfsObj, PRTVFSOBJ phVfsObj, uint32_t *poffError, PRTERRINFO pErrInfo) { RT_NOREF(pProviderReg, pSpec, poffError); int rc; RTVFSFILE hVfsFileIn = RTVfsObjToFile(hPrevVfsObj); if (hVfsFileIn != NIL_RTVFSFILE) { RTVFS hVfs; rc = RTFsIso9660VolOpen(hVfsFileIn, pElement->uProvider, &hVfs, pErrInfo); RTVfsFileRelease(hVfsFileIn); if (RT_SUCCESS(rc)) { *phVfsObj = RTVfsObjFromVfs(hVfs); RTVfsRelease(hVfs); if (*phVfsObj != NIL_RTVFSOBJ) return VINF_SUCCESS; rc = VERR_VFS_CHAIN_CAST_FAILED; } } else rc = VERR_VFS_CHAIN_CAST_FAILED; return rc; } /** * @interface_method_impl{RTVFSCHAINELEMENTREG,pfnCanReuseElement} */ static DECLCALLBACK(bool) rtVfsChainIsoFsVol_CanReuseElement(PCRTVFSCHAINELEMENTREG pProviderReg, PCRTVFSCHAINSPEC pSpec, PCRTVFSCHAINELEMSPEC pElement, PCRTVFSCHAINSPEC pReuseSpec, PCRTVFSCHAINELEMSPEC pReuseElement) { RT_NOREF(pProviderReg, pSpec, pReuseSpec); if ( pElement->paArgs[0].uProvider == pReuseElement->paArgs[0].uProvider || !pReuseElement->paArgs[0].uProvider) return true; return false; } /** VFS chain element 'file'. */ static RTVFSCHAINELEMENTREG g_rtVfsChainIsoFsVolReg = { /* uVersion = */ RTVFSCHAINELEMENTREG_VERSION, /* fReserved = */ 0, /* pszName = */ "isofs", /* ListEntry = */ { NULL, NULL }, /* pszHelp = */ "Open a ISO 9660 or UDF file system, requires a file object on the left side.\n" "The 'noudf' option make it ignore any UDF.\n" "The 'nojoliet' option make it ignore any joliet supplemental volume.\n" "The 'norock' option make it ignore any rock ridge info.\n", /* pfnValidate = */ rtVfsChainIsoFsVol_Validate, /* pfnInstantiate = */ rtVfsChainIsoFsVol_Instantiate, /* pfnCanReuseElement = */ rtVfsChainIsoFsVol_CanReuseElement, /* uEndMarker = */ RTVFSCHAINELEMENTREG_VERSION }; RTVFSCHAIN_AUTO_REGISTER_ELEMENT_PROVIDER(&g_rtVfsChainIsoFsVolReg, rtVfsChainIsoFsVolReg);