os: don't request read access from CreateFile in Stat

CL 448897 changed os.Stat to request GENERIC_READ access when using CreateFile to examine a file. This is unnecessary; access flags of 0 will permit examining file metadata even if the file isn't readable. Revert to the old behavior here. For #56217 Change-Id: I09220b3bbee304bd89f4a94ec9b0af42042b7773 Reviewed-on: https://go-review.googlesource.com/c/go/+/450296 TryBot-Result: Gopher Robot <[email protected]> Reviewed-by: Bryan Mills <[email protected]> Run-TryBot: Bryan Mills <[email protected]> Run-TryBot: Quim Muntal <[email protected]>
golang · Nov 14, 2022 · 24fc640 · 24fc640
1 parent 6234e46
commit 24fc640
Showing 1 changed file with 2 additions and 6 deletions.
diff --git a/src/os/stat_windows.go b/src/os/stat_windows.go
@@ -69,12 +69,8 @@ func stat(funcname, name string, createFileAttrs uint32) (FileInfo, error) {
 	}
 
 	// Finally use CreateFile.
-	h, err := syscall.CreateFile(namep,
-		syscall.GENERIC_READ,
-		syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE,
-		nil,
-		syscall.OPEN_EXISTING,
-		createFileAttrs, 0)
+	h, err := syscall.CreateFile(namep, 0, 0, nil,
+		syscall.OPEN_EXISTING, createFileAttrs, 0)
 	if err != nil {
 		return nil, &PathError{Op: "CreateFile", Path: name, Err: err}
 	}