| // Copyright 2009 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. | 
 |  | 
 | // +build aix darwin dragonfly freebsd linux nacl netbsd openbsd solaris | 
 |  | 
 | package os | 
 |  | 
 | import "syscall" | 
 |  | 
 | func isExist(err error) bool { | 
 | 	err = underlyingError(err) | 
 | 	return err == syscall.EEXIST || err == syscall.ENOTEMPTY || err == ErrExist | 
 | } | 
 |  | 
 | func isNotExist(err error) bool { | 
 | 	err = underlyingError(err) | 
 | 	return err == syscall.ENOENT || err == ErrNotExist | 
 | } | 
 |  | 
 | func isPermission(err error) bool { | 
 | 	err = underlyingError(err) | 
 | 	return err == syscall.EACCES || err == syscall.EPERM || err == ErrPermission | 
 | } |