libgo/go/os/error_unix.go

   1 // Copyright 2009 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 // +build darwin dragonfly freebsd linux netbsd openbsd
   6
   7 package os
   8
   9 import "syscall"
  10
  11 func isExist(err error) bool {
  12         switch pe := err.(type) {
  13         case nil:
  14                 return false
  15         case *PathError:
  16                 err = pe.Err
  17         case *LinkError:
  18                 err = pe.Err
  19         }
  20         return err == syscall.EEXIST || err == ErrExist
  21 }
  22
  23 func isNotExist(err error) bool {
  24         switch pe := err.(type) {
  25         case nil:
  26                 return false
  27         case *PathError:
  28                 err = pe.Err
  29         case *LinkError:
  30                 err = pe.Err
  31         }
  32         return err == syscall.ENOENT || err == ErrNotExist
  33 }
  34
  35 func isPermission(err error) bool {
  36         switch pe := err.(type) {
  37         case nil:
  38                 return false
  39         case *PathError:
  40                 err = pe.Err
  41         case *LinkError:
  42                 err = pe.Err
  43         }
  44         return err == syscall.EACCES || err == syscall.EPERM || err == ErrPermission
  45 }