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// 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 linux nacl netbsd openbsd solaris
package os
import "syscall"
func isExist(err error) bool {
switch pe := err.(type) {
case nil:
return false
case *PathError:
err = pe.Err
case *LinkError:
err = pe.Err
case *SyscallError:
err = pe.Err
}
return err == syscall.EEXIST || err == ErrExist
}
func isNotExist(err error) bool {
switch pe := err.(type) {
case nil:
return false
case *PathError:
err = pe.Err
case *LinkError:
err = pe.Err
case *SyscallError:
err = pe.Err
}
return err == syscall.ENOENT || err == ErrNotExist
}
func isPermission(err error) bool {
switch pe := err.(type) {
case nil:
return false
case *PathError:
err = pe.Err
case *LinkError:
err = pe.Err
case *SyscallError:
err = pe.Err
}
return err == syscall.EACCES || err == syscall.EPERM || err == ErrPermission
}
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