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// Copyright 2015 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.
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
package socktest
import "syscall"
// Socket wraps syscall.Socket.
func (sw *Switch) Socket(family, sotype, proto int) (s int, err error) {
sw.once.Do(sw.init)
so := &Status{Cookie: cookie(family, sotype, proto)}
sw.fmu.RLock()
f, _ := sw.fltab[FilterSocket]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return -1, err
}
s, so.Err = syscall.Socket(family, sotype, proto)
if err = af.apply(so); err != nil {
if so.Err == nil {
syscall.Close(s)
}
return -1, err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).OpenFailed++
return -1, so.Err
}
nso := sw.addLocked(s, family, sotype, proto)
sw.stats.getLocked(nso.Cookie).Opened++
return s, nil
}
// Close wraps syscall.Close.
func (sw *Switch) Close(s int) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Close(s)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterClose]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.Close(s)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).CloseFailed++
return so.Err
}
delete(sw.sotab, s)
sw.stats.getLocked(so.Cookie).Closed++
return nil
}
// Connect wraps syscall.Connect.
func (sw *Switch) Connect(s int, sa syscall.Sockaddr) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Connect(s, sa)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterConnect]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.Connect(s, sa)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).ConnectFailed++
return so.Err
}
sw.stats.getLocked(so.Cookie).Connected++
return nil
}
// Listen wraps syscall.Listen.
func (sw *Switch) Listen(s, backlog int) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Listen(s, backlog)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterListen]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.Listen(s, backlog)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).ListenFailed++
return so.Err
}
sw.stats.getLocked(so.Cookie).Listened++
return nil
}
// Accept wraps syscall.Accept.
func (sw *Switch) Accept(s int) (ns int, sa syscall.Sockaddr, err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Accept(s)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterAccept]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return -1, nil, err
}
ns, sa, so.Err = syscall.Accept(s)
if err = af.apply(so); err != nil {
if so.Err == nil {
syscall.Close(ns)
}
return -1, nil, err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).AcceptFailed++
return -1, nil, so.Err
}
nso := sw.addLocked(ns, so.Cookie.Family(), so.Cookie.Type(), so.Cookie.Protocol())
sw.stats.getLocked(nso.Cookie).Accepted++
return ns, sa, nil
}
// GetsockoptInt wraps syscall.GetsockoptInt.
func (sw *Switch) GetsockoptInt(s, level, opt int) (soerr int, err error) {
so := sw.sockso(s)
if so == nil {
return syscall.GetsockoptInt(s, level, opt)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterGetsockoptInt]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return -1, err
}
soerr, so.Err = syscall.GetsockoptInt(s, level, opt)
so.SocketErr = syscall.Errno(soerr)
if err = af.apply(so); err != nil {
return -1, err
}
if so.Err != nil {
return -1, so.Err
}
if opt == syscall.SO_ERROR && (so.SocketErr == syscall.Errno(0) || so.SocketErr == syscall.EISCONN) {
sw.smu.Lock()
sw.stats.getLocked(so.Cookie).Connected++
sw.smu.Unlock()
}
return soerr, nil
}
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