/// <summary>Create a new encryption zone.</summary>
/// <remarks>
/// Create a new encryption zone.
/// <p/>
/// Called while holding the FSDirectory lock.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
internal virtual XAttr CreateEncryptionZone(string src, CipherSuite suite, CryptoProtocolVersion
version, string keyName)
{
System.Diagnostics.Debug.Assert(dir.HasWriteLock());
INodesInPath srcIIP = dir.GetINodesInPath4Write(src, false);
if (dir.IsNonEmptyDirectory(srcIIP))
{
throw new IOException("Attempt to create an encryption zone for a non-empty directory."
);
}
if (srcIIP != null && srcIIP.GetLastINode() != null && !srcIIP.GetLastINode().IsDirectory
())
{
throw new IOException("Attempt to create an encryption zone for a file.");
}
EncryptionZoneManager.EncryptionZoneInt ezi = GetEncryptionZoneForPath(srcIIP);
if (ezi != null)
{
throw new IOException("Directory " + src + " is already in an " + "encryption zone. ("
+ GetFullPathName(ezi) + ")");
}
HdfsProtos.ZoneEncryptionInfoProto proto = PBHelper.Convert(suite, version, keyName
);
XAttr ezXAttr = XAttrHelper.BuildXAttr(HdfsServerConstants.CryptoXattrEncryptionZone
, proto.ToByteArray());
IList <XAttr> xattrs = Lists.NewArrayListWithCapacity(1);
xattrs.AddItem(ezXAttr);
// updating the xattr will call addEncryptionZone,
// done this way to handle edit log loading
FSDirXAttrOp.UnprotectedSetXAttrs(dir, src, xattrs, EnumSet.Of(XAttrSetFlag.Create
));
return(ezXAttr);
}
/// <summary>Remove a file/directory from the namespace.</summary>
/// <remarks>
/// Remove a file/directory from the namespace.
/// <p>
/// For large directories, deletion is incremental. The blocks under
/// the directory are collected and deleted a small number at a time holding
/// the
/// <see cref="FSNamesystem"/>
/// lock.
/// <p>
/// For small directory or file the deletion is done in one shot.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
internal static INode.BlocksMapUpdateInfo Delete(FSNamesystem fsn, string src, bool
recursive, bool logRetryCache)
{
FSDirectory fsd = fsn.GetFSDirectory();
FSPermissionChecker pc = fsd.GetPermissionChecker();
byte[][] pathComponents = FSDirectory.GetPathComponentsForReservedPath(src);
src = fsd.ResolvePath(pc, src, pathComponents);
INodesInPath iip = fsd.GetINodesInPath4Write(src, false);
if (!recursive && fsd.IsNonEmptyDirectory(iip))
{
throw new PathIsNotEmptyDirectoryException(src + " is non empty");
}
if (fsd.IsPermissionEnabled())
{
fsd.CheckPermission(pc, iip, false, null, FsAction.Write, null, FsAction.All, true
);
}
return(DeleteInternal(fsn, src, iip, logRetryCache));
}