|  | // 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 darwin dragonfly freebsd js,wasm 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 | 
|  | } |