github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/net/ipv4/syscall_linux_386.go (about) 1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package ipv4 6 7 import ( 8 "syscall" 9 "unsafe" 10 ) 11 12 const ( 13 sysGETSOCKOPT = 0xf 14 sysSETSOCKOPT = 0xe 15 ) 16 17 func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (int, syscall.Errno) 18 19 func getsockopt(fd, level, name int, v unsafe.Pointer, l *sysSockoptLen) error { 20 if _, errno := socketcall(sysGETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 { 21 return error(errno) 22 } 23 return nil 24 } 25 26 func setsockopt(fd, level, name int, v unsafe.Pointer, l sysSockoptLen) error { 27 if _, errno := socketcall(sysSETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 { 28 return error(errno) 29 } 30 return nil 31 }