diff options
Diffstat (limited to 'test/iptables/iptables_unsafe.go')
-rw-r--r-- | test/iptables/iptables_unsafe.go | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/test/iptables/iptables_unsafe.go b/test/iptables/iptables_unsafe.go deleted file mode 100644 index bd85a8fea..000000000 --- a/test/iptables/iptables_unsafe.go +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright 2020 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. - -package iptables - -import ( - "fmt" - "syscall" - "unsafe" -) - -type originalDstError struct { - errno syscall.Errno -} - -func (e originalDstError) Error() string { - return fmt.Sprintf("errno (%d) when calling getsockopt(SO_ORIGINAL_DST): %v", int(e.errno), e.errno.Error()) -} - -// SO_ORIGINAL_DST gets the original destination of a redirected packet via -// getsockopt. -const SO_ORIGINAL_DST = 80 - -func originalDestination4(connfd int) (syscall.RawSockaddrInet4, error) { - var addr syscall.RawSockaddrInet4 - var addrLen uint32 = syscall.SizeofSockaddrInet4 - if errno := originalDestination(connfd, syscall.SOL_IP, unsafe.Pointer(&addr), &addrLen); errno != 0 { - return syscall.RawSockaddrInet4{}, originalDstError{errno} - } - return addr, nil -} - -func originalDestination6(connfd int) (syscall.RawSockaddrInet6, error) { - var addr syscall.RawSockaddrInet6 - var addrLen uint32 = syscall.SizeofSockaddrInet6 - if errno := originalDestination(connfd, syscall.SOL_IPV6, unsafe.Pointer(&addr), &addrLen); errno != 0 { - return syscall.RawSockaddrInet6{}, originalDstError{errno} - } - return addr, nil -} - -func originalDestination(connfd int, level uintptr, optval unsafe.Pointer, optlen *uint32) syscall.Errno { - _, _, errno := syscall.Syscall6( - syscall.SYS_GETSOCKOPT, - uintptr(connfd), - level, - SO_ORIGINAL_DST, - uintptr(optval), - uintptr(unsafe.Pointer(optlen)), - 0) - return errno -} |