/// <exception cref="System.IO.IOException"/>
private static IDictionary <string, object> ToJsonMap(XAttr xAttr, XAttrCodec encoding
)
{
if (xAttr == null)
{
return(null);
}
IDictionary <string, object> m = new SortedDictionary <string, object>();
m["name"] = XAttrHelper.GetPrefixName(xAttr);
m["value"] = xAttr.GetValue() != null?XAttrCodec.EncodeValue(xAttr.GetValue(),
encoding) : null;
return(m);
}
/// <exception cref="Org.Apache.Hadoop.Security.AccessControlException"/>
internal static void CheckPermissionForApi(FSPermissionChecker pc, XAttr xAttr, bool
isRawPath)
{
bool isSuperUser = pc.IsSuperUser();
if (xAttr.GetNameSpace() == XAttr.NameSpace.User || (xAttr.GetNameSpace() == XAttr.NameSpace
.Trusted && isSuperUser))
{
return;
}
if (xAttr.GetNameSpace() == XAttr.NameSpace.Raw && isRawPath && isSuperUser)
{
return;
}
if (XAttrHelper.GetPrefixName(xAttr).Equals(HdfsServerConstants.SecurityXattrUnreadableBySuperuser
))
{
if (xAttr.GetValue() != null)
{
throw new AccessControlException("Attempt to set a value for '" + HdfsServerConstants
.SecurityXattrUnreadableBySuperuser + "'. Values are not allowed for this xattr."
);
}
return;
}
throw new AccessControlException("User doesn't have permission for xattr: " + XAttrHelper
.GetPrefixName(xAttr));
}
/// <summary>
/// Verifies that the combined size of the name and value of an xattr is within
/// the configured limit.
/// </summary>
/// <remarks>
/// Verifies that the combined size of the name and value of an xattr is within
/// the configured limit. Setting a limit of zero disables this check.
/// </remarks>
private static void CheckXAttrSize(FSDirectory fsd, XAttr xAttr)
{
if (fsd.GetXattrMaxSize() == 0)
{
return;
}
int size = Sharpen.Runtime.GetBytesForString(xAttr.GetName(), Charsets.Utf8).Length;
if (xAttr.GetValue() != null)
{
size += xAttr.GetValue().Length;
}
if (size > fsd.GetXattrMaxSize())
{
throw new HadoopIllegalArgumentException("The XAttr is too big. The maximum combined size of the"
+ " name and value is " + fsd.GetXattrMaxSize() + ", but the total size is " +
size);
}
}
/// <summary>Get value of first xattr from <code>XAttr</code> list</summary>
public static byte[] GetFirstXAttrValue(IList <XAttr> xAttrs)
{
byte[] value = null;
XAttr xAttr = GetFirstXAttr(xAttrs);
if (xAttr != null)
{
value = xAttr.GetValue();
if (value == null)
{
value = new byte[0];
}
}
// xattr exists, but no value.
return(value);
}