| // Copyright 2018 The gVisor Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // +build linux |
| |
| package rawfile |
| |
| import ( |
| "fmt" |
| "syscall" |
| |
| "github.com/google/netstack/tcpip" |
| ) |
| |
| const maxErrno = 134 |
| |
| var translations [maxErrno]*tcpip.Error |
| |
| // TranslateErrno translate an errno from the syscall package into a |
| // *tcpip.Error. |
| // |
| // Valid, but unreconigized errnos will be translated to |
| // tcpip.ErrInvalidEndpointState (EINVAL). Panics on invalid errnos. |
| func TranslateErrno(e syscall.Errno) *tcpip.Error { |
| if err := translations[e]; err != nil { |
| return err |
| } |
| return tcpip.ErrInvalidEndpointState |
| } |
| |
| func addTranslation(host syscall.Errno, trans *tcpip.Error) { |
| if translations[host] != nil { |
| panic(fmt.Sprintf("duplicate translation for host errno %q (%d)", host.Error(), host)) |
| } |
| translations[host] = trans |
| } |
| |
| func init() { |
| addTranslation(syscall.EEXIST, tcpip.ErrDuplicateAddress) |
| addTranslation(syscall.ENETUNREACH, tcpip.ErrNoRoute) |
| addTranslation(syscall.EINVAL, tcpip.ErrInvalidEndpointState) |
| addTranslation(syscall.EALREADY, tcpip.ErrAlreadyConnecting) |
| addTranslation(syscall.EISCONN, tcpip.ErrAlreadyConnected) |
| addTranslation(syscall.EADDRINUSE, tcpip.ErrPortInUse) |
| addTranslation(syscall.EADDRNOTAVAIL, tcpip.ErrBadLocalAddress) |
| addTranslation(syscall.EPIPE, tcpip.ErrClosedForSend) |
| addTranslation(syscall.EWOULDBLOCK, tcpip.ErrWouldBlock) |
| addTranslation(syscall.ECONNREFUSED, tcpip.ErrConnectionRefused) |
| addTranslation(syscall.ETIMEDOUT, tcpip.ErrTimeout) |
| addTranslation(syscall.EINPROGRESS, tcpip.ErrConnectStarted) |
| addTranslation(syscall.EDESTADDRREQ, tcpip.ErrDestinationRequired) |
| addTranslation(syscall.ENOTSUP, tcpip.ErrNotSupported) |
| addTranslation(syscall.ENOTTY, tcpip.ErrQueueSizeNotSupported) |
| addTranslation(syscall.ENOTCONN, tcpip.ErrNotConnected) |
| addTranslation(syscall.ECONNRESET, tcpip.ErrConnectionReset) |
| addTranslation(syscall.ECONNABORTED, tcpip.ErrConnectionAborted) |
| addTranslation(syscall.EMSGSIZE, tcpip.ErrMessageTooLong) |
| addTranslation(syscall.ENOBUFS, tcpip.ErrNoBufferSpace) |
| } |