private Errno GetLastError()
{
Errno errno = Stdlib.GetLastError();
Trace.TraceError(errno.ToString());
return(errno);
}
public void AcquireExclusiveLock()
{
_fd = Mono.Unix.Native.Syscall.open(
_lockFile,
Mono.Unix.Native.OpenFlags.O_CREAT |
Mono.Unix.Native.OpenFlags.O_WRONLY |
Mono.Unix.Native.OpenFlags.O_APPEND |
Mono.Unix.Native.OpenFlags.O_NONBLOCK,
FilePermissions.ACCESSPERMS);
if (_fd == -1)
{
_fd = 0;
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("FileRWLock: file open returned: " + error.ToString());
}
int ret = flock(_fd, LOCK_EX | LOCK_NB);
if (ret == -1)
{
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("AcquireExLock flock returned: " + error.ToString());
}
if (_fd != 0)
{
Mono.Unix.Native.Syscall.close(_fd);
_fd = 0;
}
//LinuxEventProvider.LogInfo("Bindings", "Acquired exclusive lock on: " + _windowsLockFile);
}
public void CreateAndCloseLockFile()
{
if (!File.Exists(_lockFile))
{
File.Create(_lockFile);
}
//
// Create the file.
//
int fd = Mono.Unix.Native.Syscall.open(
_lockFile,
Mono.Unix.Native.OpenFlags.O_CREAT | Mono.Unix.Native.OpenFlags.O_WRONLY | Mono.Unix.Native.OpenFlags.O_APPEND | Mono.Unix.Native.OpenFlags.O_NONBLOCK,
FilePermissions.ACCESSPERMS);
if (fd == -1)
{
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("FileRWLock: file open returned: " + error.ToString());
}
_fd = 0;
//
// close the file.
//
Mono.Unix.Native.Syscall.close(fd);
}
public void AcquireSharedLock()
{
int ret = flock(_fd, LOCK_SH | LOCK_NB);
if (ret == -1)
{
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("AcquireSharedLock flock returned: " + error.ToString());
}
}
public override string ToString()
{
if (Shell.Windows)
{
return(errorCode + ": " + base.Message);
}
else
{
return(errno.ToString() + ": " + base.Message);
}
}
/*
* ~FileRWLock()
* {
* if (_fd != 0)
* {
* Mono.Unix.Native.Syscall.close(_fd);
* _fd = 0;
* }
* }
*/
public void InitializeAsyncLocks()
{
//
// Create the file.
//
int fd = Mono.Unix.Native.Syscall.open(
_lockFile,
Mono.Unix.Native.OpenFlags.O_CREAT | Mono.Unix.Native.OpenFlags.O_WRONLY | Mono.Unix.Native.OpenFlags.O_APPEND | Mono.Unix.Native.OpenFlags.O_NONBLOCK,
FilePermissions.ACCESSPERMS);
if (fd == -1)
{
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("FileRWLock: file open returned: " + error.ToString());
}
_fd = fd;
//
// close the file.
//
Mono.Unix.Native.Syscall.close(fd);
uint groupId = (uint)Mono.Unix.Native.Syscall.getgrnam("kudu_group").gr_gid;
//
// chown the file file
//
Mono.Unix.Native.Syscall.chown(_lockFile, Mono.Unix.Native.Syscall.getuid(), groupId);
//
// setup permissions 770 on the file.
//
Mono.Unix.Native.FilePermissions permissions =
Mono.Unix.Native.FilePermissions.S_IRWXU |
Mono.Unix.Native.FilePermissions.S_IRGRP |
Mono.Unix.Native.FilePermissions.S_IWGRP |
Mono.Unix.Native.FilePermissions.S_IXGRP;
//
// chmod the file.
//
Mono.Unix.Native.Syscall.chmod(_lockFile, permissions);
}
public virtual void Release()
{
int ret = flock(_fd, LOCK_UN | LOCK_NB);
if (ret == -1)
{
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("ReleaseExLock flock returned: " + error.ToString());
}
if (_fd != 0)
{
Mono.Unix.Native.Syscall.close(_fd);
_fd = 0;
}
}
public void Release()
{
int ret = flock(_fd, LOCK_UN | LOCK_NB);
if (ret == -1)
{
Errno error = Mono.Unix.Native.Syscall.GetLastError();
throw new Exception("AcquireExLock flock returned: " + error.ToString());
}
//LinuxEventProvider.LogInfo("Bindings", "Released exclusive lock on: " + _windowsLockFile);
if (_fd != 0)
{
Mono.Unix.Native.Syscall.close(_fd);
_fd = 0;
}
}
/// <summary>
/// Gets the extended attribute.
/// </summary>
/// <returns>The extended attribute.</returns>
/// <param name="path">Path to the file or folder.</param>
/// <param name="key">Key of the extended attribute.</param>
public string GetExtendedAttribute(string path, string key)
{
path = Path.GetFullPath(path);
if (!File.Exists(path) && !Directory.Exists(path))
{
throw new FileNotFoundException(string.Format("{0}: on path \"{1}\"", "No such file or directory", path), path);
}
#if __MonoCS__
byte[] value;
long ret = Syscall.getxattr(path, prefix + key, out value);
#if __COCOA__
if (ret != 0)
{
// On MacOS 93 means no value is found
if (ret == 93)
{
return(null);
}
}
#else
if (ret == -1)
{
Errno error = Syscall.GetLastError();
if (error.ToString().Equals("ENODATA"))
{
return(null);
}
else
{
throw new ExtendedAttributeException(string.Format("{0}: on path \"{1}\"", Syscall.GetLastError().ToString(), path));
}
}
#endif
if (value == null)
{
return(null);
}
else
{
return(Encoding.UTF8.GetString(value));
}
#else
throw new WrongPlatformException();
#endif
}
/// <summary>
/// Determines whether Extended Attributes are active on the filesystem.
/// </summary>
/// <param name="path">Path to be checked</param>
/// <returns><c>true</c> if this instance is feature available the specified path; otherwise, <c>false</c>.</returns>
public bool IsFeatureAvailable(string path)
{
#if __MonoCS__
if (!File.Exists(path) && !Directory.Exists(path))
{
throw new ArgumentException(
string.Format(
"Given path \"{0}\" does not exists",
path));
}
byte[] value;
string key = "test";
long ret = Syscall.getxattr(path, prefix + key, out value);
bool retValue = true;
if (ret != 0)
{
#if __COCOA__
// Feature not supported is errno 102
if (ret == 102)
{
retValue = false;
}
#else
Errno error = Syscall.GetLastError();
if (error.ToString().Equals("EOPNOTSUPP"))
{
retValue = false;
}
#endif
}
return(retValue);
#else
throw new WrongPlatformException();
#endif
}
static void ExtractFilesInDir(string path, IReadOnlyFilesystem fs, string volumeName, string outputDir,
bool doXattrs)
{
if (path.StartsWith('/'))
{
path = path.Substring(1);
}
Errno error = fs.ReadDir(path, out List <string> directory);
if (error != Errno.NoError)
{
AaruConsole.ErrorWriteLine("Error {0} reading root directory {0}", error.ToString());
return;
}
foreach (string entry in directory)
{
error = fs.Stat(path + "/" + entry, out FileEntryInfo stat);
if (error == Errno.NoError)
{
string outputPath;
if (stat.Attributes.HasFlag(FileAttributes.Directory))
{
outputPath = Path.Combine(outputDir, fs.XmlFsType.Type, volumeName, path, entry);
Directory.CreateDirectory(outputPath);
AaruConsole.WriteLine("Created subdirectory at {0}", outputPath);
ExtractFilesInDir(path + "/" + entry, fs, volumeName, outputDir, doXattrs);
var di = new DirectoryInfo(outputPath);
#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
try
{
if (stat.CreationTimeUtc.HasValue)
{
di.CreationTimeUtc = stat.CreationTimeUtc.Value;
}
}
catch
{
// ignored
}
try
{
if (stat.LastWriteTimeUtc.HasValue)
{
di.LastWriteTimeUtc = stat.LastWriteTimeUtc.Value;
}
}
catch
{
// ignored
}
try
{
if (stat.AccessTimeUtc.HasValue)
{
di.LastAccessTimeUtc = stat.AccessTimeUtc.Value;
}
}
catch
{
// ignored
}
#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
continue;
}
FileStream outputFile;
if (doXattrs)
{
error = fs.ListXAttr(path + "/" + entry, out List <string> xattrs);
if (error == Errno.NoError)
{
foreach (string xattr in xattrs)
{
byte[] xattrBuf = new byte[0];
error = fs.GetXattr(path + "/" + entry, xattr, ref xattrBuf);
if (error != Errno.NoError)
{
continue;
}
outputPath = Path.Combine(outputDir, fs.XmlFsType.Type, volumeName, path, ".xattrs", xattr);
Directory.CreateDirectory(outputPath);
outputPath = Path.Combine(outputPath, entry);
if (!File.Exists(outputPath))
{
outputFile = new FileStream(outputPath, FileMode.CreateNew, FileAccess.ReadWrite,
FileShare.None);
outputFile.Write(xattrBuf, 0, xattrBuf.Length);
outputFile.Close();
var fi = new FileInfo(outputPath);
#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
try
{
if (stat.CreationTimeUtc.HasValue)
{
fi.CreationTimeUtc = stat.CreationTimeUtc.Value;
}
}
catch
{
// ignored
}
try
{
if (stat.LastWriteTimeUtc.HasValue)
{
fi.LastWriteTimeUtc = stat.LastWriteTimeUtc.Value;
}
}
catch
{
// ignored
}
try
{
if (stat.AccessTimeUtc.HasValue)
{
fi.LastAccessTimeUtc = stat.AccessTimeUtc.Value;
}
}
catch
{
// ignored
}
#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
AaruConsole.WriteLine("Written {0} bytes of xattr {1} from file {2} to {3}",
xattrBuf.Length, xattr, entry, outputPath);
}
else
{
AaruConsole.ErrorWriteLine("Cannot write xattr {0} for {1}, output exists", xattr,
entry);
}
}
}
}
outputPath = Path.Combine(outputDir, fs.XmlFsType.Type, volumeName, path);
Directory.CreateDirectory(outputPath);
outputPath = Path.Combine(outputPath, entry);
if (!File.Exists(outputPath))
{
byte[] outBuf = new byte[0];
error = fs.Read(path + "/" + entry, 0, stat.Length, ref outBuf);
if (error == Errno.NoError)
{
outputFile = new FileStream(outputPath, FileMode.CreateNew, FileAccess.ReadWrite,
FileShare.None);
outputFile.Write(outBuf, 0, outBuf.Length);
outputFile.Close();
var fi = new FileInfo(outputPath);
#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
try
{
if (stat.CreationTimeUtc.HasValue)
{
fi.CreationTimeUtc = stat.CreationTimeUtc.Value;
}
}
catch
{
// ignored
}
try
{
if (stat.LastWriteTimeUtc.HasValue)
{
fi.LastWriteTimeUtc = stat.LastWriteTimeUtc.Value;
}
}
catch
{
// ignored
}
try
{
if (stat.AccessTimeUtc.HasValue)
{
fi.LastAccessTimeUtc = stat.AccessTimeUtc.Value;
}
}
catch
{
// ignored
}
#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
AaruConsole.WriteLine("Written {0} bytes of file {1} to {2}", outBuf.Length, entry,
outputPath);
}
else
{
AaruConsole.ErrorWriteLine("Error {0} reading file {1}", error, entry);
}
}
else
{
AaruConsole.ErrorWriteLine("Cannot write file {0}, output exists", entry);
}
}
else
{
AaruConsole.ErrorWriteLine("Error reading file {0}", entry);
}
}
}
static void ListFilesInDir(string path, IReadOnlyFilesystem fs, bool longFormat)
{
if (path.StartsWith('/'))
{
path = path.Substring(1);
}
AaruConsole.WriteLine(string.IsNullOrEmpty(path) ? "Root directory" : $"Directory: {path}");
Errno error = fs.ReadDir(path, out List <string> directory);
if (error != Errno.NoError)
{
AaruConsole.ErrorWriteLine("Error {0} reading root directory {1}", error.ToString(), path);
return;
}
Dictionary <string, FileEntryInfo> stats = new Dictionary <string, FileEntryInfo>();
foreach (string entry in directory)
{
fs.Stat(path + "/" + entry, out FileEntryInfo stat);
stats.Add(entry, stat);
}
foreach (KeyValuePair <string, FileEntryInfo> entry in
stats.OrderBy(e => e.Value?.Attributes.HasFlag(FileAttributes.Directory) == false))
{
if (longFormat)
{
if (entry.Value != null)
{
if (entry.Value.Attributes.HasFlag(FileAttributes.Directory))
{
AaruConsole.WriteLine("{0, 10:d} {0, 12:T} {1, -20} {2}", entry.Value.CreationTimeUtc,
"<DIR>", entry.Key);
}
else
{
AaruConsole.WriteLine("{0, 10:d} {0, 12:T} {1, 6}{2, 14:N0} {3}",
entry.Value.CreationTimeUtc, entry.Value.Inode, entry.Value.Length,
entry.Key);
}
error = fs.ListXAttr(path + "/" + entry.Key, out List <string> xattrs);
if (error != Errno.NoError)
{
continue;
}
foreach (string xattr in xattrs)
{
byte[] xattrBuf = new byte[0];
error = fs.GetXattr(path + "/" + entry.Key, xattr, ref xattrBuf);
if (error == Errno.NoError)
{
AaruConsole.WriteLine("\t\t{0}\t{1:##,#}", xattr, xattrBuf.Length);
}
}
}
else
{
AaruConsole.WriteLine("{0, 47}{1}", string.Empty, entry.Key);
}
}
else
{
AaruConsole.
WriteLine(entry.Value?.Attributes.HasFlag(FileAttributes.Directory) == true ? "{0}/" : "{0}",
entry.Key);
}
}
AaruConsole.WriteLine();
foreach (KeyValuePair <string, FileEntryInfo> subdirectory in
stats.Where(e => e.Value?.Attributes.HasFlag(FileAttributes.Directory) == true))
{
ListFilesInDir(path + "/" + subdirectory.Key, fs, longFormat);
}
}
/// <summary>
/// Mounts an Apple Lisa filesystem
/// </summary>
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary <string, string> options, string @namespace)
{
try
{
device = imagePlugin;
Encoding = new LisaRoman();
// Lisa OS is unable to work on disks without tags.
// This code is designed like that.
// However with some effort the code may be modified to ignore them.
if (device.Info.ReadableSectorTags == null ||
!device.Info.ReadableSectorTags.Contains(SectorTagType.AppleSectorTag))
{
DicConsole.DebugWriteLine("LisaFS plugin", "Underlying device does not support Lisa tags");
return(Errno.InOutError);
}
// Minimal LisaOS disk is 3.5" single sided double density, 800 sectors
if (device.Info.Sectors < 800)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Device is too small");
return(Errno.InOutError);
}
// MDDF cannot be at end of device, of course
volumePrefix = device.Info.Sectors;
// LisaOS searches sectors until tag tells MDDF resides there, so we'll search 100 sectors
for (ulong i = 0; i < 100; i++)
{
DecodeTag(device.ReadSectorTag(i, SectorTagType.AppleSectorTag), out LisaTag.PriamTag searchTag);
DicConsole.DebugWriteLine("LisaFS plugin", "Sector {0}, file ID 0x{1:X4}", i, searchTag.FileId);
if (volumePrefix == device.Info.Sectors && searchTag.FileId == FILEID_LOADER_SIGNED)
{
volumePrefix = i - 1;
}
if (searchTag.FileId != FILEID_MDDF)
{
continue;
}
devTagSize = device.ReadSectorTag(i, SectorTagType.AppleSectorTag).Length;
byte[] sector = device.ReadSector(i);
mddf = new MDDF();
byte[] pString = new byte[33];
mddf.fsversion = BigEndianBitConverter.ToUInt16(sector, 0x00);
mddf.volid = BigEndianBitConverter.ToUInt64(sector, 0x02);
mddf.volnum = BigEndianBitConverter.ToUInt16(sector, 0x0A);
Array.Copy(sector, 0x0C, pString, 0, 33);
mddf.volname = StringHandlers.PascalToString(pString, Encoding);
mddf.unknown1 = sector[0x2D];
Array.Copy(sector, 0x2E, pString, 0, 33);
// Prevent garbage
mddf.password = pString[0] <= 32 ? StringHandlers.PascalToString(pString, Encoding) : "";
mddf.unknown2 = sector[0x4F];
mddf.machine_id = BigEndianBitConverter.ToUInt32(sector, 0x50);
mddf.master_copy_id = BigEndianBitConverter.ToUInt32(sector, 0x54);
uint lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x58);
mddf.dtvc = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x5C);
mddf.dtcc = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x60);
mddf.dtvb = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x64);
mddf.dtvs = DateHandlers.LisaToDateTime(lisaTime);
mddf.unknown3 = BigEndianBitConverter.ToUInt32(sector, 0x68);
mddf.mddf_block = BigEndianBitConverter.ToUInt32(sector, 0x6C);
mddf.volsize_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x70);
mddf.volsize_minus_mddf_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x74);
mddf.vol_size = BigEndianBitConverter.ToUInt32(sector, 0x78);
mddf.blocksize = BigEndianBitConverter.ToUInt16(sector, 0x7C);
mddf.datasize = BigEndianBitConverter.ToUInt16(sector, 0x7E);
mddf.unknown4 = BigEndianBitConverter.ToUInt16(sector, 0x80);
mddf.unknown5 = BigEndianBitConverter.ToUInt32(sector, 0x82);
mddf.unknown6 = BigEndianBitConverter.ToUInt32(sector, 0x86);
mddf.clustersize = BigEndianBitConverter.ToUInt16(sector, 0x8A);
mddf.fs_size = BigEndianBitConverter.ToUInt32(sector, 0x8C);
mddf.unknown7 = BigEndianBitConverter.ToUInt32(sector, 0x90);
mddf.srec_ptr = BigEndianBitConverter.ToUInt32(sector, 0x94);
mddf.unknown9 = BigEndianBitConverter.ToUInt16(sector, 0x98);
mddf.srec_len = BigEndianBitConverter.ToUInt16(sector, 0x9A);
mddf.unknown10 = BigEndianBitConverter.ToUInt32(sector, 0x9C);
mddf.unknown11 = BigEndianBitConverter.ToUInt32(sector, 0xA0);
mddf.unknown12 = BigEndianBitConverter.ToUInt32(sector, 0xA4);
mddf.unknown13 = BigEndianBitConverter.ToUInt32(sector, 0xA8);
mddf.unknown14 = BigEndianBitConverter.ToUInt32(sector, 0xAC);
mddf.filecount = BigEndianBitConverter.ToUInt16(sector, 0xB0);
mddf.unknown15 = BigEndianBitConverter.ToUInt32(sector, 0xB2);
mddf.unknown16 = BigEndianBitConverter.ToUInt32(sector, 0xB6);
mddf.freecount = BigEndianBitConverter.ToUInt32(sector, 0xBA);
mddf.unknown17 = BigEndianBitConverter.ToUInt16(sector, 0xBE);
mddf.unknown18 = BigEndianBitConverter.ToUInt32(sector, 0xC0);
mddf.overmount_stamp = BigEndianBitConverter.ToUInt64(sector, 0xC4);
mddf.serialization = BigEndianBitConverter.ToUInt32(sector, 0xCC);
mddf.unknown19 = BigEndianBitConverter.ToUInt32(sector, 0xD0);
mddf.unknown_timestamp = BigEndianBitConverter.ToUInt32(sector, 0xD4);
mddf.unknown20 = BigEndianBitConverter.ToUInt32(sector, 0xD8);
mddf.unknown21 = BigEndianBitConverter.ToUInt32(sector, 0xDC);
mddf.unknown22 = BigEndianBitConverter.ToUInt32(sector, 0xE0);
mddf.unknown23 = BigEndianBitConverter.ToUInt32(sector, 0xE4);
mddf.unknown24 = BigEndianBitConverter.ToUInt32(sector, 0xE8);
mddf.unknown25 = BigEndianBitConverter.ToUInt32(sector, 0xEC);
mddf.unknown26 = BigEndianBitConverter.ToUInt32(sector, 0xF0);
mddf.unknown27 = BigEndianBitConverter.ToUInt32(sector, 0xF4);
mddf.unknown28 = BigEndianBitConverter.ToUInt32(sector, 0xF8);
mddf.unknown29 = BigEndianBitConverter.ToUInt32(sector, 0xFC);
mddf.unknown30 = BigEndianBitConverter.ToUInt32(sector, 0x100);
mddf.unknown31 = BigEndianBitConverter.ToUInt32(sector, 0x104);
mddf.unknown32 = BigEndianBitConverter.ToUInt32(sector, 0x108);
mddf.unknown33 = BigEndianBitConverter.ToUInt32(sector, 0x10C);
mddf.unknown34 = BigEndianBitConverter.ToUInt32(sector, 0x110);
mddf.unknown35 = BigEndianBitConverter.ToUInt32(sector, 0x114);
mddf.backup_volid = BigEndianBitConverter.ToUInt64(sector, 0x118);
mddf.label_size = BigEndianBitConverter.ToUInt16(sector, 0x120);
mddf.fs_overhead = BigEndianBitConverter.ToUInt16(sector, 0x122);
mddf.result_scavenge = BigEndianBitConverter.ToUInt16(sector, 0x124);
mddf.boot_code = BigEndianBitConverter.ToUInt16(sector, 0x126);
mddf.boot_environ = BigEndianBitConverter.ToUInt16(sector, 0x6C);
mddf.unknown36 = BigEndianBitConverter.ToUInt32(sector, 0x12A);
mddf.unknown37 = BigEndianBitConverter.ToUInt32(sector, 0x12E);
mddf.unknown38 = BigEndianBitConverter.ToUInt32(sector, 0x132);
mddf.vol_sequence = BigEndianBitConverter.ToUInt16(sector, 0x136);
mddf.vol_left_mounted = sector[0x138];
// Check that the MDDF is correct
if (mddf.mddf_block != i - volumePrefix ||
mddf.vol_size > device.Info.Sectors ||
mddf.vol_size - 1 !=
mddf.volsize_minus_one ||
mddf.vol_size - i - 1 !=
mddf.volsize_minus_mddf_minus_one - volumePrefix ||
mddf.datasize >
mddf.blocksize || mddf.blocksize < device.Info.SectorSize ||
mddf.datasize != device.Info.SectorSize)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Incorrect MDDF found");
return(Errno.InvalidArgument);
}
// Check MDDF version
switch (mddf.fsversion)
{
case LISA_V1:
DicConsole.DebugWriteLine("LisaFS plugin", "Mounting LisaFS v1");
break;
case LISA_V2:
DicConsole.DebugWriteLine("LisaFS plugin", "Mounting LisaFS v2");
break;
case LISA_V3:
DicConsole.DebugWriteLine("LisaFS plugin", "Mounting LisaFS v3");
break;
default:
DicConsole.ErrorWriteLine("Cannot mount LisaFS version {0}", mddf.fsversion.ToString());
return(Errno.NotSupported);
}
// Initialize caches
extentCache = new Dictionary <short, ExtentFile>();
systemFileCache = new Dictionary <short, byte[]>();
fileCache = new Dictionary <short, byte[]>();
//catalogCache = new Dictionary<short, List<CatalogEntry>>();
fileSizeCache = new Dictionary <short, int>();
mounted = true;
if (options == null)
{
options = GetDefaultOptions();
}
if (options.TryGetValue("debug", out string debugString))
{
bool.TryParse(debugString, out debug);
}
if (debug)
{
printedExtents = new List <short>();
}
// Read the S-Records file
Errno error = ReadSRecords();
if (error != Errno.NoError)
{
DicConsole.ErrorWriteLine("Error {0} reading S-Records file.", error);
return(error);
}
directoryDtcCache = new Dictionary <short, DateTime> {
{ DIRID_ROOT, mddf.dtcc }
};
// Read the Catalog File
error = ReadCatalog();
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Cannot read Catalog File, error {0}",
error.ToString());
mounted = false;
return(error);
}
// If debug, cache system files
if (debug)
{
error = ReadSystemFile(FILEID_BOOT_SIGNED, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read boot blocks");
mounted = false;
return(error);
}
error = ReadSystemFile(FILEID_LOADER_SIGNED, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read boot loader");
mounted = false;
return(error);
}
error = ReadSystemFile((short)FILEID_MDDF, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read MDDF");
mounted = false;
return(error);
}
error = ReadSystemFile((short)FILEID_BITMAP, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read volume bitmap");
mounted = false;
return(error);
}
error = ReadSystemFile((short)FILEID_SRECORD, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read S-Records file");
mounted = false;
return(error);
}
}
// Create XML metadata for mounted filesystem
XmlFsType = new FileSystemType();
if (DateTime.Compare(mddf.dtvb, DateHandlers.LisaToDateTime(0)) > 0)
{
XmlFsType.BackupDate = mddf.dtvb;
XmlFsType.BackupDateSpecified = true;
}
XmlFsType.Clusters = mddf.vol_size;
XmlFsType.ClusterSize = (uint)(mddf.clustersize * mddf.datasize);
if (DateTime.Compare(mddf.dtvc, DateHandlers.LisaToDateTime(0)) > 0)
{
XmlFsType.CreationDate = mddf.dtvc;
XmlFsType.CreationDateSpecified = true;
}
XmlFsType.Dirty = mddf.vol_left_mounted != 0;
XmlFsType.Files = mddf.filecount;
XmlFsType.FilesSpecified = true;
XmlFsType.FreeClusters = mddf.freecount;
XmlFsType.FreeClustersSpecified = true;
XmlFsType.Type = "LisaFS";
XmlFsType.VolumeName = mddf.volname;
XmlFsType.VolumeSerial = $"{mddf.volid:X16}";
return(Errno.NoError);
}
DicConsole.DebugWriteLine("LisaFS plugin", "Not a Lisa filesystem");
return(Errno.NotSupported);
}
catch (Exception ex)
{
DicConsole.ErrorWriteLine("Exception {0}, {1}, {2}", ex.Message, ex.InnerException, ex.StackTrace);
return(Errno.InOutError);
}
}
/// <summary>
/// Removes the extended attribute.
/// </summary>
/// <param name="path">Removes attribute from this path.</param>
/// <param name="key">Key of the attribute, which should be removed.</param>
public void RemoveExtendedAttribute(string path, string key)
{
path = Path.GetFullPath(path);
if (!File.Exists(path) && !Directory.Exists(path))
{
throw new FileNotFoundException(string.Format("{0}: on path \"{1}\"", "No such file or directory", path), path);
}
#if __MonoCS__
long ret = Syscall.removexattr(path, prefix + key);
if (ret != 0)
{
#if !__COCOA__
Errno errno = Syscall.GetLastError();
if (errno != Errno.ENODATA)
{
throw new ExtendedAttributeException(string.Format("{0}: on path \"{1}\"", errno.ToString(), path));
}
#endif
}
#else
throw new WrongPlatformException();
#endif
}
/// <summary>
/// Retrieves the error information from the native implementation and constructs a new <see cref="NativeException"/> object, that can be thrown afterwards.
/// </summary>
/// <param name="nativeMethodName">Name of the native API method which returned the error code.</param>
/// <param name="errorCode">The error code returned by the native API method.</param>
/// <param name="errnoResolvable">This will tell whether the retrieved errno could be resolved into a symbolic representation.</param>
/// <param name="errnoSymbolic">This will hold the symbolic value of the retrieved errno; check the <paramref name="errnoResolvable"/> parameter beforehand!</param>
private NativeException RetrieveErrnoAndBuildException(string nativeMethodName, NativeErrorCodes errorCode, out bool errnoResolvable, out Errno errnoSymbolic)
{
// Retrieve errno
var errnoStringBuffer = new StringBuilder(256);
long errno = GetLastErrnoValue(errnoStringBuffer, errnoStringBuffer.Capacity);
// Try to resolve to symbolic representation
errnoResolvable = NativeConvert.TryToErrno((int)errno, out errnoSymbolic);
// Create native exception object
return(new NativeException(nativeMethodName, errorCode, errno, (errnoResolvable ? errnoSymbolic.ToString() + ", " : "") + errnoStringBuffer.ToString()));
}