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| // Copyright 2017 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.
|
| package socket
|
| import (
| "runtime"
| "syscall"
| "unsafe"
| )
|
| func probeProtocolStack() int {
| switch runtime.GOARCH {
| case "amd64":
| return 4
| default:
| var p uintptr
| return int(unsafe.Sizeof(p))
| }
| }
|
| //go:cgo_import_dynamic libc___xnet_getsockopt __xnet_getsockopt "libsocket.so"
| //go:cgo_import_dynamic libc_setsockopt setsockopt "libsocket.so"
| //go:cgo_import_dynamic libc___xnet_recvmsg __xnet_recvmsg "libsocket.so"
| //go:cgo_import_dynamic libc___xnet_sendmsg __xnet_sendmsg "libsocket.so"
|
| //go:linkname procGetsockopt libc___xnet_getsockopt
| //go:linkname procSetsockopt libc_setsockopt
| //go:linkname procRecvmsg libc___xnet_recvmsg
| //go:linkname procSendmsg libc___xnet_sendmsg
|
| var (
| procGetsockopt uintptr
| procSetsockopt uintptr
| procRecvmsg uintptr
| procSendmsg uintptr
| )
|
| func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
| func rawSysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
|
| func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
| l := uint32(len(b))
| _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procGetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
| return int(l), errnoErr(errno)
| }
|
| func setsockopt(s uintptr, level, name int, b []byte) error {
| _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
| return errnoErr(errno)
| }
|
| func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
| n, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procRecvmsg)), 3, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
| return int(n), errnoErr(errno)
| }
|
| func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
| n, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSendmsg)), 3, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
| return int(n), errnoErr(errno)
| }
|
| func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
| return 0, errNotImplemented
| }
|
| func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
| return 0, errNotImplemented
| }
|
|
