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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 (
| "syscall"
| "unsafe"
| )
|
| func probeProtocolStack() int { return 4 }
|
| const (
| sysSETSOCKOPT = 0xe
| sysGETSOCKOPT = 0xf
| sysSENDMSG = 0x10
| sysRECVMSG = 0x11
| sysRECVMMSG = 0x13
| sysSENDMMSG = 0x14
| )
|
| func socketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
| func rawsocketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
|
| func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
| l := uint32(len(b))
| _, errno := socketcall(sysGETSOCKOPT, 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 := socketcall(sysSETSOCKOPT, 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 := socketcall(sysRECVMSG, 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 := socketcall(sysSENDMSG, 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) {
| n, errno := socketcall(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
| return int(n), errnoErr(errno)
| }
|
| func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
| n, errno := socketcall(sysSENDMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
| return int(n), errnoErr(errno)
| }
|
|
