Dan Willemsen | d279748 | 2017-07-26 13:13:13 -0700 | [diff] [blame] | 1 | // Copyright 2017 The Go Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package net |
| 6 | |
| 7 | import ( |
| 8 | "runtime" |
| 9 | "syscall" |
| 10 | ) |
| 11 | |
| 12 | // BUG(mikio): On Windows, the Read and Write methods of |
| 13 | // syscall.RawConn are not implemented. |
| 14 | |
| 15 | // BUG(mikio): On NaCl and Plan 9, the Control, Read and Write methods |
| 16 | // of syscall.RawConn are not implemented. |
| 17 | |
| 18 | type rawConn struct { |
| 19 | fd *netFD |
| 20 | } |
| 21 | |
| 22 | func (c *rawConn) ok() bool { return c != nil && c.fd != nil } |
| 23 | |
| 24 | func (c *rawConn) Control(f func(uintptr)) error { |
| 25 | if !c.ok() { |
| 26 | return syscall.EINVAL |
| 27 | } |
| 28 | err := c.fd.pfd.RawControl(f) |
| 29 | runtime.KeepAlive(c.fd) |
| 30 | if err != nil { |
| 31 | err = &OpError{Op: "raw-control", Net: c.fd.net, Source: nil, Addr: c.fd.laddr, Err: err} |
| 32 | } |
| 33 | return err |
| 34 | } |
| 35 | |
| 36 | func (c *rawConn) Read(f func(uintptr) bool) error { |
| 37 | if !c.ok() { |
| 38 | return syscall.EINVAL |
| 39 | } |
| 40 | err := c.fd.pfd.RawRead(f) |
| 41 | runtime.KeepAlive(c.fd) |
| 42 | if err != nil { |
| 43 | err = &OpError{Op: "raw-read", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} |
| 44 | } |
| 45 | return err |
| 46 | } |
| 47 | |
| 48 | func (c *rawConn) Write(f func(uintptr) bool) error { |
| 49 | if !c.ok() { |
| 50 | return syscall.EINVAL |
| 51 | } |
| 52 | err := c.fd.pfd.RawWrite(f) |
| 53 | runtime.KeepAlive(c.fd) |
| 54 | if err != nil { |
| 55 | err = &OpError{Op: "raw-write", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} |
| 56 | } |
| 57 | return err |
| 58 | } |
| 59 | |
| 60 | func newRawConn(fd *netFD) (*rawConn, error) { |
| 61 | return &rawConn{fd: fd}, nil |
| 62 | } |
Dan Willemsen | a322328 | 2018-02-27 19:41:43 -0800 | [diff] [blame] | 63 | |
| 64 | type rawListener struct { |
| 65 | rawConn |
| 66 | } |
| 67 | |
| 68 | func (l *rawListener) Read(func(uintptr) bool) error { |
| 69 | return syscall.EINVAL |
| 70 | } |
| 71 | |
| 72 | func (l *rawListener) Write(func(uintptr) bool) error { |
| 73 | return syscall.EINVAL |
| 74 | } |
| 75 | |
| 76 | func newRawListener(fd *netFD) (*rawListener, error) { |
| 77 | return &rawListener{rawConn{fd: fd}}, nil |
| 78 | } |