// Unix specific implementation of the method that reads an entry from disk and writes it into the archive stream.
partial void ReadFileFromDiskAndWriteToArchiveStreamAsEntry(string fullPath, string entryName)
{
Interop.Sys.FileStatus status = default;
status.Mode = default;
status.Dev = default;
Interop.CheckIo(Interop.Sys.LStat(fullPath, out status));
TarEntryType entryType = (status.Mode & (uint)Interop.Sys.FileTypes.S_IFMT) switch
{
// Hard links are treated as regular files.
// Unix socket files do not get added to tar files.
Interop.Sys.FileTypes.S_IFBLK => TarEntryType.BlockDevice,
Interop.Sys.FileTypes.S_IFCHR => TarEntryType.CharacterDevice,
Interop.Sys.FileTypes.S_IFIFO => TarEntryType.Fifo,
Interop.Sys.FileTypes.S_IFLNK => TarEntryType.SymbolicLink,
Interop.Sys.FileTypes.S_IFREG => Format is TarFormat.V7 ? TarEntryType.V7RegularFile : TarEntryType.RegularFile,
Interop.Sys.FileTypes.S_IFDIR => TarEntryType.Directory,
_ => throw new IOException(string.Format(SR.TarUnsupportedFile, fullPath)),
};
FileSystemInfo info = entryType is TarEntryType.Directory ? new DirectoryInfo(fullPath) : new FileInfo(fullPath);
TarEntry entry = Format switch
{
TarFormat.V7 => new V7TarEntry(entryType, entryName),
TarFormat.Ustar => new UstarTarEntry(entryType, entryName),
TarFormat.Pax => new PaxTarEntry(entryType, entryName),
TarFormat.Gnu => new GnuTarEntry(entryType, entryName),
_ => throw new FormatException(string.Format(SR.TarInvalidFormat, Format)),
};
if (entryType is TarEntryType.BlockDevice or TarEntryType.CharacterDevice)
{
uint major;
uint minor;
unsafe
{
Interop.Sys.GetDeviceIdentifiers((ulong)status.RDev, &major, &minor);
}
entry._header._devMajor = (int)major;
entry._header._devMinor = (int)minor;
}
entry._header._mTime = TarHelpers.GetDateTimeFromSecondsSinceEpoch(status.MTime);
entry._header._aTime = TarHelpers.GetDateTimeFromSecondsSinceEpoch(status.ATime);
entry._header._cTime = TarHelpers.GetDateTimeFromSecondsSinceEpoch(status.CTime);
entry._header._mode = (status.Mode & 4095); // First 12 bits
// Uid and UName
entry._header._uid = (int)status.Uid;
if (!_userIdentifiers.TryGetValue(status.Uid, out string?uName))
{
uName = Interop.Sys.GetUserNameFromPasswd(status.Uid);
_userIdentifiers.Add(status.Uid, uName);
}
entry._header._uName = uName;
// Gid and GName
entry._header._gid = (int)status.Gid;
if (!_groupIdentifiers.TryGetValue(status.Gid, out string?gName))
{
gName = Interop.Sys.GetGroupName(status.Gid);
_groupIdentifiers.Add(status.Gid, gName);
}
entry._header._gName = gName;
if (entry.EntryType == TarEntryType.SymbolicLink)
{
entry.LinkName = info.LinkTarget ?? string.Empty;
}
if (entry.EntryType is TarEntryType.RegularFile or TarEntryType.V7RegularFile)
{
Debug.Assert(entry._header._dataStream == null);
entry._header._dataStream = File.OpenRead(fullPath);
}
WriteEntry(entry);
if (entry._header._dataStream != null)
{
entry._header._dataStream.Dispose();
}
}
// Windows specific implementation of the method that reads an entry from disk and writes it into the archive stream.
partial void ReadFileFromDiskAndWriteToArchiveStreamAsEntry(string fullPath, string entryName)
{
TarEntryType entryType;
FileAttributes attributes = File.GetAttributes(fullPath);
if (attributes.HasFlag(FileAttributes.ReparsePoint))
{
entryType = TarEntryType.SymbolicLink;
}
else if (attributes.HasFlag(FileAttributes.Directory))
{
entryType = TarEntryType.Directory;
}
else if (attributes.HasFlag(FileAttributes.Normal) || attributes.HasFlag(FileAttributes.Archive))
{
entryType = Format is TarEntryFormat.V7 ? TarEntryType.V7RegularFile : TarEntryType.RegularFile;
}
else
{
throw new IOException(string.Format(SR.TarUnsupportedFile, fullPath));
}
TarEntry entry = Format switch
{
TarEntryFormat.V7 => new V7TarEntry(entryType, entryName),
TarEntryFormat.Ustar => new UstarTarEntry(entryType, entryName),
TarEntryFormat.Pax => new PaxTarEntry(entryType, entryName),
TarEntryFormat.Gnu => new GnuTarEntry(entryType, entryName),
_ => throw new FormatException(string.Format(SR.TarInvalidFormat, Format)),
};
FileSystemInfo info = attributes.HasFlag(FileAttributes.Directory) ? new DirectoryInfo(fullPath) : new FileInfo(fullPath);
entry._header._mTime = new DateTimeOffset(info.LastWriteTimeUtc);
entry._header._aTime = new DateTimeOffset(info.LastAccessTimeUtc);
entry._header._cTime = new DateTimeOffset(info.LastWriteTimeUtc); // There is no "change time" property
entry.Mode = DefaultWindowsMode;
if (entry.EntryType == TarEntryType.SymbolicLink)
{
entry.LinkName = info.LinkTarget ?? string.Empty;
}
if (entry.EntryType is TarEntryType.RegularFile or TarEntryType.V7RegularFile)
{
FileStreamOptions options = new()
{
Mode = FileMode.Open,
Access = FileAccess.Read,
Share = FileShare.Read,
Options = FileOptions.None
};
Debug.Assert(entry._header._dataStream == null);
entry._header._dataStream = File.Open(fullPath, options);
}
WriteEntry(entry);
if (entry._header._dataStream != null)
{
entry._header._dataStream.Dispose();
}
}
}
