| // 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" |
| ) |
| |
| const ( |
| sysSETSOCKOPT = 0xe |
| sysGETSOCKOPT = 0xf |
| ) |
| |
| 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) |
| } |
