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Added support for ANDOS BPB.

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This commit is contained in:
Natalia Portillo
2017-08-25 03:28:55 +01:00
parent abc9e8afb4
commit c174d1fe4a
1 changed files with 20 additions and 5 deletions
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25
DiscImageChef.Filesystems/FAT.cs
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@@ -268,6 +268,7 @@ namespace DiscImageChef.Filesystems
bool useEBPB = false;
bool useShortFAT32 = false;
bool useLongFAT32 = false;
bool andos_oem_correct = false;
AtariParameterBlock atariBPB = new AtariParameterBlock();
MSXParameterBlock msxBPB = new MSXParameterBlock();
@@ -343,6 +344,9 @@ namespace DiscImageChef.Filesystems
Fat32BPB.big_sectors /= 4;
}
andos_oem_correct = dos33BPB.oem_name[0] < 0x20 && dos33BPB.oem_name[1] >= 0x20 && dos33BPB.oem_name[2] >= 0x20 && dos33BPB.oem_name[3] >= 0x20 &&
dos33BPB.oem_name[4] >= 0x20 && dos33BPB.oem_name[5] >= 0x20 && dos33BPB.oem_name[6] >= 0x20 && dos33BPB.oem_name[7] >= 0x20;
if(bits_in_bps_fat32 == 1 && correct_spc_fat32 && Fat32BPB.fats_no <= 2 && Fat32BPB.sectors == 0 && Fat32BPB.spfat == 0 && Fat32BPB.signature == 0x29 && Encoding.ASCII.GetString(Fat32BPB.fs_type) == "FAT32 ")
{
DicConsole.DebugWriteLine("FAT plugin", "Using FAT32 BPB");
@@ -358,13 +362,13 @@ namespace DiscImageChef.Filesystems
DicConsole.DebugWriteLine("FAT plugin", "Using MSX BPB");
useMSXBPB = true;
}
else if(bits_in_bps_dos40 == 1 && correct_spc_dos40 && EBPB.fats_no <= 2 && EBPB.root_ent > 0 && EBPB.spfat > 0 && (EBPB.signature == 0x28 || EBPB.signature == 0x29))
else if(bits_in_bps_dos40 == 1 && correct_spc_dos40 && EBPB.fats_no <= 2 && EBPB.root_ent > 0 && EBPB.spfat > 0 && (EBPB.signature == 0x28 || EBPB.signature == 0x29 || andos_oem_correct))
{
if(EBPB.sectors == 0)
{
if(EBPB.big_sectors <= (partition.End - partition.Start) + 1)
{
if(EBPB.signature == 0x29)
if(EBPB.signature == 0x29 || andos_oem_correct)
{
DicConsole.DebugWriteLine("FAT plugin", "Using DOS 4.0 BPB");
useEBPB = true;
@@ -378,7 +382,7 @@ namespace DiscImageChef.Filesystems
}
else if(EBPB.sectors <= (partition.End - partition.Start) + 1)
{
if(EBPB.signature == 0x29)
if(EBPB.signature == 0x29 || andos_oem_correct)
{
DicConsole.DebugWriteLine("FAT plugin", "Using DOS 4.0 BPB");
useEBPB = true;
@@ -993,6 +997,15 @@ namespace DiscImageChef.Filesystems
fakeBPB.oem_name[6] >= 0x20 && fakeBPB.oem_name[6] <= 0x7F &&
fakeBPB.oem_name[7] >= 0x20 && fakeBPB.oem_name[7] <= 0x7F)
xmlFSType.SystemIdentifier = StringHandlers.CToString(fakeBPB.oem_name);
else if(fakeBPB.oem_name[0] < 0x20 &&
fakeBPB.oem_name[1] >= 0x20 && fakeBPB.oem_name[1] <= 0x7F &&
fakeBPB.oem_name[2] >= 0x20 && fakeBPB.oem_name[2] <= 0x7F &&
fakeBPB.oem_name[3] >= 0x20 && fakeBPB.oem_name[3] <= 0x7F &&
fakeBPB.oem_name[4] >= 0x20 && fakeBPB.oem_name[4] <= 0x7F &&
fakeBPB.oem_name[5] >= 0x20 && fakeBPB.oem_name[5] <= 0x7F &&
fakeBPB.oem_name[6] >= 0x20 && fakeBPB.oem_name[6] <= 0x7F &&
fakeBPB.oem_name[7] >= 0x20 && fakeBPB.oem_name[7] <= 0x7F)
xmlFSType.SystemIdentifier = StringHandlers.CToString(fakeBPB.oem_name, CurrentEncoding, start: 1);
}
if(fakeBPB.signature == 0x28 || fakeBPB.signature == 0x29)
@@ -1034,7 +1047,7 @@ namespace DiscImageChef.Filesystems
if(fakeBPB.hsectors <= partition.Start)
sb.AppendFormat("{0} hidden sectors before BPB.", fakeBPB.hsectors).AppendLine();
if(fakeBPB.signature == 0x28 || fakeBPB.signature == 0x29)
if(fakeBPB.signature == 0x28 || fakeBPB.signature == 0x29 || andos_oem_correct)
{
sb.AppendFormat("Drive number: 0x{0:X2}", fakeBPB.drive_no).AppendLine();
@@ -1052,7 +1065,7 @@ namespace DiscImageChef.Filesystems
sb.AppendLine("Disk surface should be on next mount.");
}
if(fakeBPB.signature == 0x29)
if(fakeBPB.signature == 0x29 || andos_oem_correct)
{
xmlFSType.VolumeName = Encoding.ASCII.GetString(fakeBPB.volume_label);
sb.AppendFormat("Filesystem type: {0}", Encoding.ASCII.GetString(fakeBPB.fs_type)).AppendLine();
@@ -1129,6 +1142,8 @@ namespace DiscImageChef.Filesystems
if(entry.adate > 0)
sb.AppendFormat("Volume last accessed on {0:d}", DateHandlers.DOSToDateTime(entry.adate, 0)).AppendLine();
break;
}
}