An abstract handle to an input or output data resource, such as a file or a socket.
@frozen struct FileDescriptorYou are responsible for managing the lifetime and validity of FileDescriptor values, in the same way as you manage a raw C file handle.
init(from: Decoder) throwsCreates a new instance by decoding from the given decoder, when the type’s RawValue is Int32.
init(rawValue: CInt)Creates a strongly-typed file handle from a raw C file handle.
static var standardError: FileDescriptorThe standard error file descriptor, with a numeric value of 2.
static var standardInput: FileDescriptorThe standard input file descriptor, with a numeric value of 0.
static var standardOutput: FileDescriptorThe standard output file descriptor, with a numeric value of 1.
var hashValue: Intlet rawValue: CIntThe raw C file handle.
static func open(FilePath, FileDescriptor.AccessMode, options: FileDescriptor.OpenOptions, permissions: FilePermissions?, retryOnInterrupt: Bool) throws -> FileDescriptorOpens or creates a file for reading or writing.
static func open(UnsafePointer<CInterop.PlatformChar>, FileDescriptor.AccessMode, options: FileDescriptor.OpenOptions, permissions: FilePermissions?, retryOnInterrupt: Bool) throws -> FileDescriptorOpens or creates a file for reading or writing.
static func pipe() throws -> (readEnd: FileDescriptor, writeEnd: FileDescriptor)Create a pipe, a unidirectional data channel which can be used for interprocess communication.
func close() throwsDeletes a file descriptor.
func closeAfter<R>(() throws -> R) throws -> RRuns a closure and then closes the file descriptor, even if an error occurs.
func duplicate(as: FileDescriptor?, retryOnInterrupt: Bool) throws -> FileDescriptorDuplicate this file descriptor and return the newly created copy.
func encode(to: Encoder) throwsEncodes this value into the given encoder, when the type’s RawValue is Int32.
func hash(into: inout Hasher)func read(fromAbsoluteOffset: Int64, into: UnsafeMutableRawBufferPointer, retryOnInterrupt: Bool) throws -> IntReads bytes at the specified offset into a buffer.
func read(into: UnsafeMutableRawBufferPointer, retryOnInterrupt: Bool) throws -> IntReads bytes at the current file offset into a buffer.
func resize(to: Int64, retryOnInterrupt: Bool) throwsfunc seek(offset: Int64, from: FileDescriptor.SeekOrigin) throws -> Int64Reposition the offset for the given file descriptor.
func write(UnsafeRawBufferPointer, retryOnInterrupt: Bool) throws -> IntWrites the contents of a buffer at the current file offset.
func write(toAbsoluteOffset: Int64, UnsafeRawBufferPointer, retryOnInterrupt: Bool) throws -> IntWrites the contents of a buffer at the specified offset.
func writeAll<S>(S) throws -> IntWrites a sequence of bytes to the current offset and then updates the offset.
func writeAll<S>(toAbsoluteOffset: Int64, S) throws -> IntWrites a sequence of bytes to the given offset.
struct AccessModeThe desired read and write access for a newly opened file.
struct OpenOptionsOptions that specify behavior for a newly-opened file.
struct SeekOriginOptions for specifying what a file descriptor’s offset is relative to.