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  }