mirror of https://github.com/k3s-io/k3s
50 lines
1.5 KiB
Go
50 lines
1.5 KiB
Go
package fileutils
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import (
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"os"
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"path/filepath"
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)
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// MkdirAllNewAs creates a directory (include any along the path) and then modifies
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// ownership ONLY of newly created directories to the requested uid/gid. If the
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// directories along the path exist, no change of ownership will be performed
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func MkdirAllNewAs(path string, mode os.FileMode, ownerUID, ownerGID int) 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 {
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// nothing to do; directory path fully exists already
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return nil
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}
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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 := os.MkdirAll(path, mode); err != nil && !os.IsExist(err) {
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return err
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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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