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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 freebsd linux netbsd openbsd
package os
import "syscall"
// IsExist returns whether the error is known to report that a file already exists.
// It is satisfied by ErrExist as well as some syscall errors.
func IsExist(err error) bool {
if pe, ok := err.(*PathError); ok {
err = pe.Err
}
return err == syscall.EEXIST || err == ErrExist
}
// IsNotExist returns whether the error is known to report that a file does not exist.
// It is satisfied by ErrNotExist as well as some syscall errors.
func IsNotExist(err error) bool {
if pe, ok := err.(*PathError); ok {
err = pe.Err
}
return err == syscall.ENOENT || err == ErrNotExist
}
// IsPermission returns whether the error is known to report that permission is denied.
// It is satisfied by ErrPermission as well as some syscall errors.
func IsPermission(err error) bool {
if pe, ok := err.(*PathError); ok {
err = pe.Err
}
return err == syscall.EACCES || err == syscall.EPERM || err == ErrPermission
}
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