gitee.com/ks-custle/core-gm@v0.0.0-20230922171213-b83bdd97b62c/net/internal/socket/cmsghdr_unix.go (about)

     1  // Copyright 2020 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  //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
     6  // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
     7  
     8  package socket
     9  
    10  import "golang.org/x/sys/unix"
    11  
    12  func controlHeaderLen() int {
    13  	return unix.CmsgLen(0)
    14  }
    15  
    16  func controlMessageLen(dataLen int) int {
    17  	return unix.CmsgLen(dataLen)
    18  }
    19  
    20  func controlMessageSpace(dataLen int) int {
    21  	return unix.CmsgSpace(dataLen)
    22  }