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501 lines
14 KiB
C
501 lines
14 KiB
C
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/******************************************************************************
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* biso_rockridge.h
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*
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* Copyright (c) 2020, longpanda <admin@ventoy.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* 本文件中定义了SUSP(ystem Use Sharing Protocol)协议(IEEE P1281)
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* 以及Rock Ridge 扩展中定义的各种表项结构(IEEE P1282)
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* 其中SUSP是规定了ISO-9660中Directory Record中System Use字段的使用方法
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* Rock Ridge是基于SUSP，在System Use字段中扩展记录了文件的属性、名称等POSIX文件信息
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* 详细的说明请参考标准文档(IEEE P1281、IEEE P1282)
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* SUSP定义的每一条Entry都是不定长的，其长度在结构里面描述
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*/
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#ifndef __BISO_ROCKRIDGE_H__
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#define __BISO_ROCKRIDGE_H__
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#ifndef S_IFLNK
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#define S_IFLNK 0120000
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#define S_IFREG 0100000
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#define S_IFDIR 0040000
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#endif
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typedef VOID (* BISO_DUMP_ENTRY_PF)(IN VOID *pEntry);
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typedef struct tagBISO_DUMP_ENTRY_CB
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{
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CHAR szSignature[3];
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BISO_DUMP_ENTRY_PF pfDump;
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}BISO_DUMP_ENTRY_CB_S;
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typedef VOID (* BISO_RRIP_PARSE_ENTRY_PF)
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(
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IN VOID *pEntry,
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OUT BISO_DIR_TREE_S *pstDirTree
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);
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typedef struct tagBISO_RRIP_PARSE_ENTRY_CB
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{
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CHAR szSignature[3];
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BISO_RRIP_PARSE_ENTRY_PF pfFunc;
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}BISO_RRIP_PARSE_ENTRY_CB_S;
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#pragma pack(1)
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/* SUSP: System Use Sharing Protocol */
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/* SUSP中定义的标准Entry结构 */
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typedef struct tagBISO_SUSP_ENTRY
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{
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/* 两个控制字 */
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CHAR cSignature1;
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CHAR cSignature2;
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/* 长度，包括控制字 */
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UCHAR ucEntryLen;
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/* 版本号 */
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UCHAR ucVersion;
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/* 数据，具体长度有ucEntryLen确定 */
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UCHAR aucData[1];
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}BISO_SUSP_ENTRY_S;
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/*
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* Continuation Area(可选)
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* !!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!
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* 之所以有CE这个控制字是因为ISO-9660标准定义的Directory Record
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* 的长度是用1个字节表示的.最大就255 Byte，所以System Use字段的长度也就
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* 不可能大于255，而有些扩展信息可能需要很多个Entry才能描述，255的长度不够
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* 就需要扩展，所以才有了这个用于扩展的Entry格式
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* 每个Directory Record的System Use字段或者扩展区域中只能最多有1个CE表项，
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* 而且一般也应该是最后1条表项，不过整个System Use区域的CE表项个数的没有限制的。
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*/
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typedef struct tagBISO_SUSP_ENTRY_CE
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'C' */
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CHAR cSignature2; /* 必须为 'E' */
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/* 长度，包括控制字, 必须为28 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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BISO_DEF_733(uiBlockLoc)
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BISO_DEF_733(uiByteOffset)
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BISO_DEF_733(uiContinuationLen)
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}BISO_SUSP_ENTRY_CE_S;
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/* Padding Filed(可选) */
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typedef struct tagBISO_SUSP_ENTRY_PD
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'P' */
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CHAR cSignature2; /* 必须为 'D' */
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/* 长度，包括控制字 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/* 数据，具体长度有ucEntryLen确定 */
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UCHAR aucData[1];
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}BISO_SUSP_ENTRY_PD_S;
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/*
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* System Use Sharing Protocol Indicator(必须存在)
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* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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* SP必须是在Root Directory Record的System Use里面从1个字节开始的第1条表项
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* 另外，SP表项还有一个作用就是它里面的Skip Len字段，它的意思是
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* 在除了ROOT之外的所有Directory Record中，System Use字段不一定是从第1个字节开始就是
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* SUSP的各种表项，可以统一跳过一定的偏移(为了兼容性考虑),就是这里的Skip Len
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* 注意这个Skip Len对ROOT根目录无效，对于ROOT永远是从SYSTEM Use的第1个字节开始是SP Entry
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*/
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typedef struct tagBISO_SUSP_ENTRY_SP
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'S' */
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CHAR cSignature2; /* 必须为 'P' */
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/* 长度，包括控制字, 必须为7 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/* 检查字段 */
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UCHAR ucChkBE;
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UCHAR ucChkEF;
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UCHAR ucSkipLen;
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}BISO_SUSP_ENTRY_SP_S;
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/* System Use Sharing Protocol Termonitor: System Use或者CE区域最后一条表项 */
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typedef struct tagBISO_SUSP_ENTRY_ST
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'S' */
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CHAR cSignature2; /* 必须为 'T' */
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/* 长度，包括控制字, 必须为4 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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}BISO_SUSP_ENTRY_ST_S;
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/* Extensions Reference */
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typedef struct tagBISO_SUSP_ENTRY_ER
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'E' */
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CHAR cSignature2; /* 必须为 'R' */
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/* 长度，包括控制字 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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UCHAR ucIdLen;
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UCHAR ucDescLen;
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UCHAR ucSrcLen;
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UCHAR ucExtVer;
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/* 后面跟着数据 */
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/* UCHAR aucId[ucIdLen]; */
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/* UCHAR aucDesc[ucDescLen]; */
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/* UCHAR aucSrc[ucSrcLen]; */
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}BISO_SUSP_ENTRY_ER_S;
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/* Extension Selector */
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typedef struct tagBISO_SUSP_ENTRY_ES
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'E' */
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CHAR cSignature2; /* 必须为 'S' */
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/* 长度，包括控制字, 必须为5 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/* 扩展编号 */
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UCHAR ucExtSeq;
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}BISO_SUSP_ENTRY_ES_S;
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/* Rock Ridge In Use RRIP 1991A版本里定义的结构, 新版本已经废弃 */
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typedef struct tagBISO_ROCK_RIDGE_ENTRY_RR
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'R' */
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CHAR cSignature2; /* 必须为 'R' */
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/* 长度，包括控制字, 必须为5 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/*
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* ucFlags, 各Bit含义如下:
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* Bit0: "PX" System Use Field recorded
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* Bit1: "PN" System Use Field recorded
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* Bit2: "SL" System Use Field recorded
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* Bit3: "NM" System Use Field recorded
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* Bit4: "CL" System Use Field recorded
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* Bit5: "PL" System Use Field recorded
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* Bit6: "RE" System Use Field recorded
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* Bit7: "TF" System Use Field recorded
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*/
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UCHAR ucFlags;
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}BISO_ROCK_RIDGE_ENTRY_RR_S;
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/* POSIX file attributes */
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typedef struct tagBISO_ROCK_RIDGE_ENTRY_PX
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'P' */
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CHAR cSignature2; /* 必须为 'X' */
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/* 长度，包括控制字, 必须为44
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* !!!!!!!!!!!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!!!!!!!!!!
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* !!!!!!!!!!!!!!!!!!!!!!!!!!
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* IEEE P1282 V1.10之前是36不是44
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*/
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/* File Mode的比特位图, 就是linux里面stat结构里面的st_mode字段 */
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BISO_DEF_733(uiPosixFileMode)
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/* st_nlink字段 */
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BISO_DEF_733(uiPosixFileLink)
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/* st_uid字段 */
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BISO_DEF_733(uiPosixFileUserId)
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/* st_gid字段 */
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BISO_DEF_733(uiPosixFileGroupId)
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/* st_ino字段, 注意这个字段在IEEE P1282 V1.10之前是没有的 */
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BISO_DEF_733(uiPosixFileSNO)
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}BISO_ROCK_RIDGE_ENTRY_PX_S;
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/* POSIX device number */
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typedef struct tagBISO_ROCK_RIDGE_ENTRY_PN
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'P' */
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CHAR cSignature2; /* 必须为 'N' */
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/* 长度，包括控制字, 必须为20 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/* Device Number的高低32位 */
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BISO_DEF_733(uiDevNumHigh)
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BISO_DEF_733(uiDevNumLow)
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}BISO_ROCK_RIDGE_ENTRY_PN_S;
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/* Symbol Link */
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typedef struct tagBISO_ROCK_RIDGE_ENTRY_SL
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{
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/* 两个控制字 */
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CHAR cSignature1; /* 必须为 'S' */
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CHAR cSignature2; /* 必须为 'L' */
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/* 长度，包括控制字, 必须为5+Componet长度 */
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UCHAR ucEntryLen;
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/* 版本号， 必须为1 */
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UCHAR ucVersion;
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/*
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* 0:最后一个软链接
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* 1:后面还有
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*/
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UCHAR ucFlags;
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/* Componet内容，有具体的格式定义ISO_RRIP_SL_COMPONENT_S */
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UCHAR aucComponet[1];
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}BISO_ROCK_RIDGE_ENTRY_SL_S;
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typedef struct tagBISO_RRIP_SL_COMPONENT
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{
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/* ucFlags
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* Bit0: Continue
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* Bit1: Current当前目录 '.'
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* Bit2: Parent父目录 '..'
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* Bit3: Root 目录 '/'
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* 其他位保留
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*/
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UCHAR ucFlags;
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/* 长度，不包括ucFlags和自己，纯粹是后面aucData的长度 */
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UCHAR ucLength;
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UCHAR aucData[1];
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}BISO_RRIP_SL_COMPONENT_S;
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#define BISO_SLCOMP_IS_CONTINUE(ucFlag) (((ucFlag >> 0) & 0x1) > 0 ? BOOL_TRUE : BOOL_FALSE)
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#define BISO_SLCOMP_IS_CURRENT(ucFlag) (((ucFlag >> 1) & 0x1) > 0 ? BOOL_TRUE : BOOL_FALSE)
|
|||
|
|
#define BISO_SLCOMP_IS_PARENT(ucFlag) (((ucFlag >> 2) & 0x1) > 0 ? BOOL_TRUE : BOOL_FALSE)
|
|||
|
|
#define BISO_SLCOMP_IS_ROOT(ucFlag) (((ucFlag >> 3) & 0x1) > 0 ? BOOL_TRUE : BOOL_FALSE)
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* Alternate Name 用来记录POSIX文件名
|
|||
|
|
* 注意NM表项可以有很多个，一直到ucFlags的比特0为0
|
|||
|
|
* 多个NM表项里面的szFileName部分要拼接在一起表示整个完整的文件名
|
|||
|
|
* 这个应该主要是为了解决长文件名的问题
|
|||
|
|
*/
|
|||
|
|
typedef struct tagBISO_ROCK_RIDGE_ENTRY_NM
|
|||
|
|
{
|
|||
|
|
/* 两个控制字 */
|
|||
|
|
CHAR cSignature1; /* 必须为 'N' */
|
|||
|
|
CHAR cSignature2; /* 必须为 'M' */
|
|||
|
|
|
|||
|
|
/* 长度，包括控制字, 必须为5+Name长度 */
|
|||
|
|
UCHAR ucEntryLen;
|
|||
|
|
|
|||
|
|
/* 版本号， 必须为1 */
|
|||
|
|
UCHAR ucVersion;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* ucFlags
|
|||
|
|
* Bit0: Continue
|
|||
|
|
* Bit1: Current当前目录 '.'
|
|||
|
|
* Bit2: Parent父目录 '..'
|
|||
|
|
* 其他位保留
|
|||
|
|
*/
|
|||
|
|
UCHAR ucFlags;
|
|||
|
|
|
|||
|
|
/* 后面跟着具体的名称，如果Flag的Bit1 2 5置为则后面就没有了 */
|
|||
|
|
CHAR szFileName[1];
|
|||
|
|
}BISO_ROCK_RIDGE_ENTRY_NM_S;
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* 后面的CL PL RE用来扩展超过8级目录的情况 */
|
|||
|
|
|
|||
|
|
/* Child Link */
|
|||
|
|
typedef struct tagBISO_ROCK_RIDGE_ENTRY_CL
|
|||
|
|
{
|
|||
|
|
/* 两个控制字 */
|
|||
|
|
CHAR cSignature1; /* 必须为 'C' */
|
|||
|
|
CHAR cSignature2; /* 必须为 'L' */
|
|||
|
|
|
|||
|
|
/* 长度，包括控制字, 必须为12 */
|
|||
|
|
UCHAR ucEntryLen;
|
|||
|
|
|
|||
|
|
/* 版本号， 必须为1 */
|
|||
|
|
UCHAR ucVersion;
|
|||
|
|
|
|||
|
|
BISO_DEF_733(uiChildDirLoc)
|
|||
|
|
}BISO_ROCK_RIDGE_ENTRY_CL_S;
|
|||
|
|
|
|||
|
|
/* Parent Link */
|
|||
|
|
typedef struct tagBISO_ROCK_RIDGE_ENTRY_PL
|
|||
|
|
{
|
|||
|
|
/* 两个控制字 */
|
|||
|
|
CHAR cSignature1; /* 必须为 'P' */
|
|||
|
|
CHAR cSignature2; /* 必须为 'L' */
|
|||
|
|
|
|||
|
|
/* 长度，包括控制字, 必须为12 */
|
|||
|
|
UCHAR ucEntryLen;
|
|||
|
|
|
|||
|
|
/* 版本号， 必须为1 */
|
|||
|
|
UCHAR ucVersion;
|
|||
|
|
|
|||
|
|
BISO_DEF_733(uiParentDirLoc)
|
|||
|
|
}BISO_ROCK_RIDGE_ENTRY_PL_S;
|
|||
|
|
|
|||
|
|
/* Relocated Directory */
|
|||
|
|
typedef struct tagBISO_ROCK_RIDGE_ENTRY_RE
|
|||
|
|
{
|
|||
|
|
/* 两个控制字 */
|
|||
|
|
CHAR cSignature1; /* 必须为 'R' */
|
|||
|
|
CHAR cSignature2; /* 必须为 'E' */
|
|||
|
|
|
|||
|
|
/* 长度，包括控制字, 必须为4 */
|
|||
|
|
UCHAR ucEntryLen;
|
|||
|
|
|
|||
|
|
/* 版本号， 必须为1 */
|
|||
|
|
UCHAR ucVersion;
|
|||
|
|
}BISO_ROCK_RIDGE_ENTRY_RE_S;
|
|||
|
|
|
|||
|
|
/* Time Stamps For File */
|
|||
|
|
typedef struct tagBISO_ROCK_RIDGE_ENTRY_TF
|
|||
|
|
{
|
|||
|
|
/* 两个控制字 */
|
|||
|
|
CHAR cSignature1; /* 必须为 'T' */
|
|||
|
|
CHAR cSignature2; /* 必须为 'F' */
|
|||
|
|
|
|||
|
|
/* 长度，包括控制字 */
|
|||
|
|
UCHAR ucEntryLen;
|
|||
|
|
|
|||
|
|
/* 版本号， 必须为1 */
|
|||
|
|
UCHAR ucVersion;
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* ucFlags:
|
|||
|
|
* Bit0: Create Time 是否记录
|
|||
|
|
* Bit1: Modify Time 是否记录
|
|||
|
|
* Bit2: Last Access Time 是否记录
|
|||
|
|
* Bit3: Last Attribute Change Time 是否记录
|
|||
|
|
* Bit4: Last Backup Time 是否记录
|
|||
|
|
* Bit5: Expiration Time 是否记录
|
|||
|
|
* Bit6: Effective Time 是否记录
|
|||
|
|
* Bit7: Long-Form 时间格式
|
|||
|
|
* 0 表示7字节数组格式(ECMA-119 9.1.5)
|
|||
|
|
* 1 表示17字符串格式(ECMA-119 8.4.26.1)
|
|||
|
|
*/
|
|||
|
|
UCHAR ucFlags;
|
|||
|
|
|
|||
|
|
/* 具体的每一个时间戳，每个时间戳7字节或者17字节，取决于ucFlags的Bit7 */
|
|||
|
|
UCHAR aucTimeStamp[1];
|
|||
|
|
}BISO_ROCK_RIDGE_ENTRY_TF_S;
|
|||
|
|
|
|||
|
|
/* File Data in sparse format 稀疏文件 */
|
|||
|
|
typedef struct tagBISO_ROCK_RIDGE_ENTRY_SF
|
|||
|
|
{
|
|||
|
|
/* 两个控制字 */
|
|||
|
|
CHAR cSignature1; /* 必须为 'S' */
|
|||
|
|
CHAR cSignature2; /* 必须为 'F' */
|
|||
|
|
|
|||
|
|
/* 长度，包括控制字, 必须为21 */
|
|||
|
|
UCHAR ucEntryLen;
|
|||
|
|
|
|||
|
|
/* 版本号， 必须为1 */
|
|||
|
|
UCHAR ucVersion;
|
|||
|
|
|
|||
|
|
BISO_DEF_733(uiVirFileSizeHigh)
|
|||
|
|
BISO_DEF_733(uiVirFileSizeLow)
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* ucDepth:
|
|||
|
|
* 1-->64KB
|
|||
|
|
* 2-->16MB
|
|||
|
|
* 3-->4GB
|
|||
|
|
* 4-->1TB
|
|||
|
|
* 5-->256TB
|
|||
|
|
* 6-->64K TB
|
|||
|
|
* 7-->16M TB
|
|||
|
|
*/
|
|||
|
|
UCHAR ucDepth;
|
|||
|
|
}BISO_ROCK_RIDGE_ENTRY_SF_S;
|
|||
|
|
|
|||
|
|
#pragma pack()
|
|||
|
|
|
|||
|
|
ULONG BISO_RRIP_ReadIndicator(INOUT BISO_PARSER_S *pstParser);
|
|||
|
|
ULONG BISO_RRIP_ReadExtInfo
|
|||
|
|
(
|
|||
|
|
IN BISO_FILE_S *pstFile,
|
|||
|
|
IN BISO_PARSER_S *pstParser,
|
|||
|
|
IN BISO_DIR_RECORD_S *pstRecord,
|
|||
|
|
OUT BISO_DIR_TREE_S *pstDirTree
|
|||
|
|
);
|
|||
|
|
VOID BISO_RRIP_GetPXInfo(IN VOID *pEntry, OUT BISO_DIR_TREE_S *pstDirTree);
|
|||
|
|
VOID BISO_RRIP_GetNMInfo(IN VOID *pEntry, OUT BISO_DIR_TREE_S *pstDirTree);
|
|||
|
|
VOID BISO_RRIP_GetTFInfo(IN VOID *pEntry, OUT BISO_DIR_TREE_S *pstDirTree);
|
|||
|
|
VOID BISO_RRIP_GetSLInfo(IN VOID *pEntry, OUT BISO_DIR_TREE_S *pstDirTree);
|
|||
|
|
VOID BISO_RRIP_GetPNInfo(IN VOID *pEntry, OUT BISO_DIR_TREE_S *pstDirTree);
|
|||
|
|
|
|||
|
|
#endif /* __BISO_ROCKRIDGE_H__ */
|
|||
|
|
|