82 lines
2 KiB
Go
82 lines
2 KiB
Go
// +build windows
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package system
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import (
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"syscall"
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)
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// MkdirAll implementation that is volume path aware for Windows.
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func MkdirAll(path string, perm os.FileMode) error {
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if re := regexp.MustCompile(`^\\\\\?\\Volume{[a-z0-9-]+}$`); re.MatchString(path) {
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return nil
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}
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// The rest of this method is copied from os.MkdirAll and should be kept
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// as-is to ensure compatibility.
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// Fast path: if we can tell whether path is a directory or file, stop with success or error.
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dir, err := os.Stat(path)
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if err == nil {
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if dir.IsDir() {
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return nil
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}
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return &os.PathError{
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Op: "mkdir",
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Path: path,
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Err: syscall.ENOTDIR,
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}
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}
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// Slow path: make sure parent exists and then call Mkdir for path.
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i := len(path)
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for i > 0 && os.IsPathSeparator(path[i-1]) { // Skip trailing path separator.
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i--
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}
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j := i
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for j > 0 && !os.IsPathSeparator(path[j-1]) { // Scan backward over element.
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j--
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}
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if j > 1 {
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// Create parent
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err = MkdirAll(path[0:j-1], perm)
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if err != nil {
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return err
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}
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}
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// Parent now exists; invoke Mkdir and use its result.
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err = os.Mkdir(path, perm)
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if err != nil {
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// Handle arguments like "foo/." by
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// double-checking that directory doesn't exist.
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dir, err1 := os.Lstat(path)
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if err1 == nil && dir.IsDir() {
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return nil
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}
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return err
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}
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return nil
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}
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// IsAbs is a platform-specific wrapper for filepath.IsAbs. On Windows,
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// golang filepath.IsAbs does not consider a path \windows\system32 as absolute
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// as it doesn't start with a drive-letter/colon combination. However, in
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// docker we need to verify things such as WORKDIR /windows/system32 in
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// a Dockerfile (which gets translated to \windows\system32 when being processed
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// by the daemon. This SHOULD be treated as absolute from a docker processing
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// perspective.
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func IsAbs(path string) bool {
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if !filepath.IsAbs(path) {
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if !strings.HasPrefix(path, string(os.PathSeparator)) {
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return false
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}
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}
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return true
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}
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