github.com/FlowerWrong/netstack@v0.0.0-20191009141956-e5848263af28/tcpip/link/rawfile/errors.go (about) 1 // Copyright 2018 The gVisor Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package rawfile 16 17 import ( 18 "fmt" 19 "syscall" 20 21 "github.com/FlowerWrong/netstack/tcpip" 22 ) 23 24 const maxErrno = 134 25 26 var translations [maxErrno]*tcpip.Error 27 28 // TranslateErrno translate an errno from the syscall package into a 29 // *tcpip.Error. 30 // 31 // Valid, but unrecognized errnos will be translated to 32 // tcpip.ErrInvalidEndpointState (EINVAL). Panics on invalid errnos. 33 func TranslateErrno(e syscall.Errno) *tcpip.Error { 34 if err := translations[e]; err != nil { 35 return err 36 } 37 return tcpip.ErrInvalidEndpointState 38 } 39 40 func addTranslation(host syscall.Errno, trans *tcpip.Error) { 41 if translations[host] != nil { 42 panic(fmt.Sprintf("duplicate translation for host errno %q (%d)", host.Error(), host)) 43 } 44 translations[host] = trans 45 } 46 47 func init() { 48 addTranslation(syscall.EEXIST, tcpip.ErrDuplicateAddress) 49 addTranslation(syscall.ENETUNREACH, tcpip.ErrNoRoute) 50 addTranslation(syscall.EINVAL, tcpip.ErrInvalidEndpointState) 51 addTranslation(syscall.EALREADY, tcpip.ErrAlreadyConnecting) 52 addTranslation(syscall.EISCONN, tcpip.ErrAlreadyConnected) 53 addTranslation(syscall.EADDRINUSE, tcpip.ErrPortInUse) 54 addTranslation(syscall.EADDRNOTAVAIL, tcpip.ErrBadLocalAddress) 55 addTranslation(syscall.EPIPE, tcpip.ErrClosedForSend) 56 addTranslation(syscall.EWOULDBLOCK, tcpip.ErrWouldBlock) 57 addTranslation(syscall.ECONNREFUSED, tcpip.ErrConnectionRefused) 58 addTranslation(syscall.ETIMEDOUT, tcpip.ErrTimeout) 59 addTranslation(syscall.EINPROGRESS, tcpip.ErrConnectStarted) 60 addTranslation(syscall.EDESTADDRREQ, tcpip.ErrDestinationRequired) 61 addTranslation(syscall.ENOTSUP, tcpip.ErrNotSupported) 62 addTranslation(syscall.ENOTTY, tcpip.ErrQueueSizeNotSupported) 63 addTranslation(syscall.ENOTCONN, tcpip.ErrNotConnected) 64 addTranslation(syscall.ECONNRESET, tcpip.ErrConnectionReset) 65 addTranslation(syscall.ECONNABORTED, tcpip.ErrConnectionAborted) 66 addTranslation(syscall.EMSGSIZE, tcpip.ErrMessageTooLong) 67 addTranslation(syscall.ENOBUFS, tcpip.ErrNoBufferSpace) 68 }