Function mkdirAllInherit

modules/logging/filewriter.go:314–341

mkdirAllInherit creates missing dirs using the nearest existing parent's permissions, normalized with r→x.

(dir string)

// mkdirAllInherit creates missing dirs using the nearest existing parent's
// permissions, normalized with r→x.
func mkdirAllInherit(dir string) error {
	if fi, err := os.Stat(dir); err == nil && fi.IsDir() {
		return nil
	}
	cur := dir
	var parent string
	for {
		next := filepath.Dir(cur)
		if next == cur {
			parent = next
			break
		}
		if fi, err := os.Stat(next); err == nil {
			if !fi.IsDir() {
				return fmt.Errorf("path component %s exists and is not a directory", next)
			}
			parent = next
			break
		}
		cur = next
	}
	perm := os.FileMode(0o700)
	if fi, err := os.Stat(parent); err == nil && fi.IsDir() {
		perm = fi.Mode().Perm()
	}
	perm = normalizeDirPerm(perm)
	return os.MkdirAll(dir, perm)
}

// mkdirAllFromFile creates missing dirs using the file's mode (with r→x) so
// 0644 → 0755, 0600 → 0700, etc.