61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
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// +build !windows
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package idtools
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import (
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"os"
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"path/filepath"
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"github.com/docker/docker/pkg/system"
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)
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func mkdirAs(path string, mode os.FileMode, ownerUID, ownerGID int, mkAll, chownExisting bool) error {
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// make an array containing the original path asked for, plus (for mkAll == true)
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// all path components leading up to the complete path that don't exist before we MkdirAll
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// so that we can chown all of them properly at the end. If chownExisting is false, we won't
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// chown the full directory path if it exists
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var paths []string
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if _, err := os.Stat(path); err != nil && os.IsNotExist(err) {
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paths = []string{path}
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} else if err == nil && chownExisting {
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if err := os.Chown(path, ownerUID, ownerGID); err != nil {
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return err
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}
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// short-circuit--we were called with an existing directory and chown was requested
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return nil
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} else if err == nil {
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// nothing to do; directory path fully exists already and chown was NOT requested
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return nil
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}
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if mkAll {
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// walk back to "/" looking for directories which do not exist
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// and add them to the paths array for chown after creation
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dirPath := path
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for {
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dirPath = filepath.Dir(dirPath)
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if dirPath == "/" {
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break
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}
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if _, err := os.Stat(dirPath); err != nil && os.IsNotExist(err) {
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paths = append(paths, dirPath)
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}
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}
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if err := system.MkdirAll(path, mode); err != nil && !os.IsExist(err) {
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return err
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}
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} else {
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if err := os.Mkdir(path, mode); err != nil && !os.IsExist(err) {
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return err
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}
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}
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// even if it existed, we will chown the requested path + any subpaths that
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// didn't exist when we called MkdirAll
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for _, pathComponent := range paths {
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if err := os.Chown(pathComponent, ownerUID, ownerGID); err != nil {
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return err
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}
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}
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return nil
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}
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