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 nacl netbsd openbsd solaris
   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         case *SyscallError:
  20                 err = pe.Err
  21         }
  22         return err == syscall.EEXIST || err == syscall.ENOTEMPTY || err == ErrExist
  23 }
  24
  25 func isNotExist(err error) bool {
  26         switch pe := err.(type) {
  27         case nil:
  28                 return false
  29         case *PathError:
  30                 err = pe.Err
  31         case *LinkError:
  32                 err = pe.Err
  33         case *SyscallError:
  34                 err = pe.Err
  35         }
  36         return err == syscall.ENOENT || err == ErrNotExist
  37 }
  38
  39 func isPermission(err error) bool {
  40         switch pe := err.(type) {
  41         case nil:
  42                 return false
  43         case *PathError:
  44                 err = pe.Err
  45         case *LinkError:
  46                 err = pe.Err
  47         case *SyscallError:
  48                 err = pe.Err
  49         }
  50         return err == syscall.EACCES || err == syscall.EPERM || err == ErrPermission
  51 }