1 // Copyright 2015 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 // +build freebsd linux 6 7 package socktest 8 9 import "syscall" 10 11 // Accept4 wraps syscall.Accept4. 12 func (sw *Switch) Accept4(s, flags int) (ns int, sa syscall.Sockaddr, err error) { 13 so := sw.sockso(s) 14 if so == nil { 15 return syscall.Accept4(s, flags) 16 } 17 sw.fmu.RLock() 18 f, _ := sw.fltab[FilterAccept] 19 sw.fmu.RUnlock() 20 21 af, err := f.apply(so) 22 if err != nil { 23 return -1, nil, err 24 } 25 ns, sa, so.Err = syscall.Accept4(s, flags) 26 if err = af.apply(so); err != nil { 27 if so.Err == nil { 28 syscall.Close(ns) 29 } 30 return -1, nil, err 31 } 32 33 sw.smu.Lock() 34 defer sw.smu.Unlock() 35 if so.Err != nil { 36 sw.stats.getLocked(so.Cookie).AcceptFailed++ 37 return -1, nil, so.Err 38 } 39 nso := sw.addLocked(ns, so.Cookie.Family(), so.Cookie.Type(), so.Cookie.Protocol()) 40 sw.stats.getLocked(nso.Cookie).Accepted++ 41 return ns, sa, nil 42 } 43
