| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package net |
| |
| import ( |
| "errors" |
| "os" |
| "runtime" |
| "syscall" |
| "syscall/mx" |
| "syscall/mx/mxio" |
| "syscall/mx/mxio/rio" |
| "syscall/mx/mxnet" |
| "time" |
| ) |
| |
| func mxStatus(err error) mx.Status { |
| if err == nil { |
| return mx.ErrOk |
| } |
| if status, ok := err.(mx.Error); ok { |
| return status.Status |
| } |
| return mx.ErrInternal |
| } |
| |
| // Network file descriptor. |
| type netFD struct { |
| // locking/lifetime of sysfd + serialize access to Read and Write methods |
| fdmu fdMutex |
| hsrc *os.File |
| m mxio.MXIO |
| |
| // immutable until Close |
| net string |
| family int |
| sotype int |
| isStream bool |
| isConnected bool |
| laddr Addr |
| raddr Addr |
| } |
| |
| func (fd *netFD) destroy() { |
| panic("TODO") |
| } |
| |
| func sysInit() { |
| } |
| |
| func (fd *netFD) isTCP() bool { |
| return len(fd.net) >= 3 && fd.net[:3] == "tcp" |
| } |
| |
| func (fd *netFD) Read(b []byte) (n int, err error) { |
| return fd.m.Read(b) |
| } |
| |
| func (fd *netFD) Write(b []byte) (n int, err error) { |
| return fd.m.Write(b) |
| } |
| |
| func (fd *netFD) recvMsg(b []byte) (n, flags int, addr string, port uint16, err error) { |
| data, flags, addr, port, err := fd.m.(*rio.Socket).RecvMsg(len(b)) |
| n = copy(b, data) |
| return n, flags, addr, port, err |
| } |
| |
| func (fd *netFD) sendMsg(b []byte, addr string, port uint16) (n int, err error) { |
| return fd.m.(*rio.Socket).SendMsg(b, addr, port) |
| } |
| |
| func (fd *netFD) closeRead() error { |
| return errors.New("net: closeRead not implemented on fuchsia") |
| } |
| |
| func (fd *netFD) closeWrite() error { |
| return errors.New("net: closeWrite not implemented on fuchsia") |
| } |
| |
| func (fd *netFD) Close() error { |
| return fd.hsrc.Close() |
| } |
| |
| func (fd *netFD) dup() (*os.File, error) { |
| return nil, errors.New("net: dup not implemented on fuchsia") |
| } |
| |
| func (fd *netFD) setDeadline(t time.Time) error { |
| return errors.New("net: setDeadline not implemented on fuchsia") |
| } |
| |
| func (fd *netFD) setReadDeadline(t time.Time) error { |
| return errors.New("net: setReadDeadline not implemented on fuchsia") |
| } |
| |
| func (fd *netFD) setWriteDeadline(t time.Time) error { |
| return errors.New("net: setWriteDeadline not implemented on fuchsia") |
| } |
| |
| func (fd *netFD) accept() (netfd *netFD, err error) { |
| if err := fd.readLock(); err != nil { |
| return nil, err |
| } |
| defer fd.readUnlock() |
| |
| m, err := rio.Accept(fd.m) |
| if err != nil { |
| return nil, err |
| } |
| netfd = &netFD{ |
| hsrc: os.NewFile(uintptr(syscall.OpenMXIO(m)), "socket"), |
| m: m, |
| family: fd.family, |
| sotype: fd.sotype, |
| net: fd.net, |
| } |
| netfd.setAddr() |
| return netfd, nil |
| } |
| |
| func (fd *netFD) asAddr(ipAddr mxnet.Addr, port uint16, err error) sockaddr { |
| if err != nil { |
| return nil |
| } |
| ip := IP(ipAddr) |
| if isZeros(ip) && port == 0 { |
| return nil |
| } |
| switch fd.sotype { |
| case syscall.SOCK_STREAM: |
| return &TCPAddr{IP: ip, Port: int(port)} |
| case syscall.SOCK_DGRAM: |
| return &UDPAddr{IP: ip, Port: int(port)} |
| } |
| return nil |
| } |
| |
| func (fd *netFD) setAddr() { |
| fd.laddr = fd.asAddr(rio.GetSockName(fd.m)) |
| fd.raddr = fd.asAddr(rio.GetPeerName(fd.m)) |
| runtime.SetFinalizer(fd, (*netFD).Close) |
| } |