mirror of
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55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package os
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import "syscall"
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func isExist(err error) bool {
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switch pe := err.(type) {
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case nil:
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return false
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case *PathError:
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err = pe.Err
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case *LinkError:
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err = pe.Err
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case *SyscallError:
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err = pe.Err
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}
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return err == syscall.ERROR_ALREADY_EXISTS ||
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err == syscall.ERROR_FILE_EXISTS || err == ErrExist
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}
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const _ERROR_BAD_NETPATH = syscall.Errno(53)
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func isNotExist(err error) bool {
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switch pe := err.(type) {
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case nil:
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return false
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case *PathError:
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err = pe.Err
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case *LinkError:
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err = pe.Err
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case *SyscallError:
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err = pe.Err
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}
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return err == syscall.ERROR_FILE_NOT_FOUND ||
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err == _ERROR_BAD_NETPATH ||
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err == syscall.ERROR_PATH_NOT_FOUND || err == ErrNotExist
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}
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func isPermission(err error) bool {
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switch pe := err.(type) {
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case nil:
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return false
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case *PathError:
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err = pe.Err
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case *LinkError:
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err = pe.Err
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case *SyscallError:
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err = pe.Err
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}
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return err == syscall.ERROR_ACCESS_DENIED || err == ErrPermission
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}
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