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Implement support for EAs in FAT32.

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This commit is contained in:
Natalia Portillo
2019-04-28 11:57:54 +01:00
parent b2c008eb02
commit fa2ec74015
9 changed files with 238 additions and 92 deletions
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39
DiscImageChef.Filesystems/FAT/Consts.cs
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@@ -59,14 +59,6 @@ namespace DiscImageChef.Filesystems.FAT
/// Entry points to self or parent directory
/// </summary>
const byte DIRENT_SUBDIR = 0x2E;
/// <summary>
/// FASTFAT.SYS indicator that extension is lowercase
/// </summary>
const byte FASTFAT_LOWERCASE_EXTENSION = 0x10;
/// <summary>
/// FASTFAT.SYS indicator that basename is lowercase
/// </summary>
const byte FASTFAT_LOWERCASE_BASENAME = 0x08;
const uint FAT32_MASK = 0x0FFFFFFF;
const uint FAT32_END_MASK = 0xFFFFFF8;
const uint FAT32_FORMATTED = 0xFFFFFF6;
@@ -92,6 +84,7 @@ namespace DiscImageChef.Filesystems.FAT
const ushort EAT_MVMT = 0xFFDF;
const ushort EAT_MVST = 0xFFDE;
const ushort EAT_ASN1 = 0xFFDD;
const string FAT32_EA_TAIL = " EA. SF";
readonly (string hash, string name)[] knownBootHashes =
{
@@ -236,5 +229,35 @@ namespace DiscImageChef.Filesystems.FAT
Normal = 0,
Critical = 1
}
[Flags]
enum CaseInfo : byte
{
/// <summary>
/// FASTFAT.SYS indicator that basename is lowercase
/// </summary>
LowerCaseBasename = 0x08,
/// <summary>
/// FASTFAT.SYS indicator that extension is lowercase
/// </summary>
LowerCaseExtension = 0x10,
AllLowerCase = 0x18,
/// <summary>
/// FAT32.IFS &lt; 0.97 indicator for normal EAs present
/// </summary>
NormalEaOld = 0xEA,
/// <summary>
/// FAT32.IFS &lt; 0.97 indicator for critical EAs present
/// </summary>
CriticalEaOld = 0xEC,
/// <summary>
/// FAT32.IFS &gt;= 0.97 indicator for normal EAs present
/// </summary>
NormalEa = 0x40,
/// <summary>
/// FAT32.IFS &gt;= 0.97 indicator for critical EAs present
/// </summary>
CriticalEa = 0x80
}
}
}