mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-08 20:55:01 +00:00
194 lines
4.0 KiB
Go
194 lines
4.0 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build aix darwin dragonfly freebsd hurd js,wasm linux nacl netbsd openbsd solaris
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package socktest
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import "syscall"
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// Socket wraps syscall.Socket.
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func (sw *Switch) Socket(family, sotype, proto int) (s int, err error) {
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sw.once.Do(sw.init)
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so := &Status{Cookie: cookie(family, sotype, proto)}
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sw.fmu.RLock()
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f := sw.fltab[FilterSocket]
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sw.fmu.RUnlock()
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af, err := f.apply(so)
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if err != nil {
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return -1, err
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}
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s, so.Err = syscall.Socket(family, sotype, proto)
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if err = af.apply(so); err != nil {
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if so.Err == nil {
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syscall.Close(s)
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}
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return -1, err
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}
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sw.smu.Lock()
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defer sw.smu.Unlock()
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if so.Err != nil {
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sw.stats.getLocked(so.Cookie).OpenFailed++
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return -1, so.Err
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}
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nso := sw.addLocked(s, family, sotype, proto)
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sw.stats.getLocked(nso.Cookie).Opened++
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return s, nil
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}
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// Close wraps syscall.Close.
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func (sw *Switch) Close(s int) (err error) {
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so := sw.sockso(s)
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if so == nil {
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return syscall.Close(s)
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}
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sw.fmu.RLock()
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f := sw.fltab[FilterClose]
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sw.fmu.RUnlock()
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af, err := f.apply(so)
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if err != nil {
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return err
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}
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so.Err = syscall.Close(s)
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if err = af.apply(so); err != nil {
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return err
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}
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sw.smu.Lock()
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defer sw.smu.Unlock()
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if so.Err != nil {
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sw.stats.getLocked(so.Cookie).CloseFailed++
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return so.Err
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}
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delete(sw.sotab, s)
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sw.stats.getLocked(so.Cookie).Closed++
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return nil
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}
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// Connect wraps syscall.Connect.
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func (sw *Switch) Connect(s int, sa syscall.Sockaddr) (err error) {
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so := sw.sockso(s)
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if so == nil {
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return syscall.Connect(s, sa)
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}
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sw.fmu.RLock()
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f := sw.fltab[FilterConnect]
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sw.fmu.RUnlock()
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af, err := f.apply(so)
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if err != nil {
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return err
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}
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so.Err = syscall.Connect(s, sa)
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if err = af.apply(so); err != nil {
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return err
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}
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sw.smu.Lock()
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defer sw.smu.Unlock()
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if so.Err != nil {
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sw.stats.getLocked(so.Cookie).ConnectFailed++
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return so.Err
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}
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sw.stats.getLocked(so.Cookie).Connected++
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return nil
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}
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// Listen wraps syscall.Listen.
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func (sw *Switch) Listen(s, backlog int) (err error) {
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so := sw.sockso(s)
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if so == nil {
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return syscall.Listen(s, backlog)
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}
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sw.fmu.RLock()
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f := sw.fltab[FilterListen]
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sw.fmu.RUnlock()
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af, err := f.apply(so)
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if err != nil {
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return err
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}
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so.Err = syscall.Listen(s, backlog)
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if err = af.apply(so); err != nil {
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return err
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}
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sw.smu.Lock()
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defer sw.smu.Unlock()
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if so.Err != nil {
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sw.stats.getLocked(so.Cookie).ListenFailed++
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return so.Err
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}
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sw.stats.getLocked(so.Cookie).Listened++
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return nil
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}
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// Accept wraps syscall.Accept.
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func (sw *Switch) Accept(s int) (ns int, sa syscall.Sockaddr, err error) {
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so := sw.sockso(s)
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if so == nil {
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return syscall.Accept(s)
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}
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sw.fmu.RLock()
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f := sw.fltab[FilterAccept]
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sw.fmu.RUnlock()
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af, err := f.apply(so)
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if err != nil {
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return -1, nil, err
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}
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ns, sa, so.Err = syscall.Accept(s)
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if err = af.apply(so); err != nil {
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if so.Err == nil {
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syscall.Close(ns)
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}
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return -1, nil, err
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}
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sw.smu.Lock()
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defer sw.smu.Unlock()
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if so.Err != nil {
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sw.stats.getLocked(so.Cookie).AcceptFailed++
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return -1, nil, so.Err
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}
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nso := sw.addLocked(ns, so.Cookie.Family(), so.Cookie.Type(), so.Cookie.Protocol())
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sw.stats.getLocked(nso.Cookie).Accepted++
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return ns, sa, nil
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}
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// GetsockoptInt wraps syscall.GetsockoptInt.
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func (sw *Switch) GetsockoptInt(s, level, opt int) (soerr int, err error) {
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so := sw.sockso(s)
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if so == nil {
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return syscall.GetsockoptInt(s, level, opt)
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}
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sw.fmu.RLock()
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f := sw.fltab[FilterGetsockoptInt]
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sw.fmu.RUnlock()
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af, err := f.apply(so)
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if err != nil {
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return -1, err
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}
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soerr, so.Err = syscall.GetsockoptInt(s, level, opt)
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so.SocketErr = syscall.Errno(soerr)
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if err = af.apply(so); err != nil {
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return -1, err
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}
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if so.Err != nil {
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return -1, so.Err
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}
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if opt == syscall.SO_ERROR && (so.SocketErr == syscall.Errno(0) || so.SocketErr == syscall.EISCONN) {
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sw.smu.Lock()
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sw.stats.getLocked(so.Cookie).Connected++
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sw.smu.Unlock()
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}
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return soerr, nil
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}
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