error_unix.go raw

   1  // Copyright 2017 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  
   7  package socket
   8  
   9  import "syscall"
  10  
  11  var (
  12  	errEAGAIN error = syscall.EAGAIN
  13  	errEINVAL error = syscall.EINVAL
  14  	errENOENT error = syscall.ENOENT
  15  )
  16  
  17  // errnoErr returns common boxed Errno values, to prevent allocations
  18  // at runtime.
  19  func errnoErr(errno syscall.Errno) error {
  20  	switch errno {
  21  	case 0:
  22  		return nil
  23  	case syscall.EAGAIN:
  24  		return errEAGAIN
  25  	case syscall.EINVAL:
  26  		return errEINVAL
  27  	case syscall.ENOENT:
  28  		return errENOENT
  29  	}
  30  	return errno
  31  }
  32