54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package fileutil
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import (
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"io/ioutil"
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"os"
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"path"
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"sort"
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)
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const (
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privateFileMode = 0600
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)
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// IsDirWriteable checks if dir is writable by writing and removing a file
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// to dir. It returns nil if dir is writable.
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func IsDirWriteable(dir string) error {
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f := path.Join(dir, ".touch")
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if err := ioutil.WriteFile(f, []byte(""), privateFileMode); err != nil {
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return err
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}
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return os.Remove(f)
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}
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// ReadDir returns the filenames in the given directory in sorted order.
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func ReadDir(dirpath string) ([]string, error) {
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dir, err := os.Open(dirpath)
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if err != nil {
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return nil, err
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}
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defer dir.Close()
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names, err := dir.Readdirnames(-1)
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if err != nil {
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return nil, err
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}
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sort.Strings(names)
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return names, nil
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}
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