# ArchiveHeader.EntryXATBlob An object that describes the extended attributes of an archive entry. ``` class EntryXATBlob ``` ## Topics ### Creating an Extended Attributes Blob [`init()`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/init()) Creates a new empty extended attribute blob. [`init?(directory: FilePath, path: FilePath, flags: ArchiveFlags)`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/init(directory:path:flags:)) Creates a new extended attribute blob from the specified directory and path. [`init?(withAAEncodedData: UnsafeBufferPointer)`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/init(withAAEncodedData:)) Creates a new archive header from encoded data. ### Applying an Extended Attributes Blob [`func apply(directory: FilePath, path: FilePath, flags: ArchiveFlags) throws`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/apply(directory:path:flags:)) Applies extended attributes to a filesystem object. ### Describing Extended Attributes [`struct ExtendedAttribute`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/ExtendedAttribute) A structure that describes the extended attributes of a filesystem. ### Collection Requirements [`func append(ArchiveHeader.EntryXATBlob.ExtendedAttribute)`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/append(_:)) [`func remove(at: Int) -> ArchiveHeader.EntryXATBlob.ExtendedAttribute`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/remove(at:)) [`func removeAll()`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/removeAll()) [`func withAAEncodedData((UnsafeBufferPointer) throws -> R) rethrows -> R`](/documentation/AppleArchive/ArchiveHeader/EntryXATBlob/withAAEncodedData(_:)) ## Relationships ### Conforms To [`RandomAccessCollection`](/documentation/Swift/RandomAccessCollection) [`Sequence`](/documentation/Swift/Sequence) [`Escapable`](/documentation/Swift/Escapable) [`Collection`](/documentation/Swift/Collection) [`BidirectionalCollection`](/documentation/Swift/BidirectionalCollection) [`Copyable`](/documentation/Swift/Copyable) [`MutableCollection`](/documentation/Swift/MutableCollection) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)