Re: [PATCH v1 2/2] signal: add procfd_signal() syscall

On Wed, Nov 28, 2018 at 11:45:34AM -1000, Joey Pabalinas wrote:

On Mon, Nov 19, 2018 at 11:32:39AM +0100, Christian Brauner wrote:

quoted

+	if (info) {
+		ret = __copy_siginfo_from_user(sig, &kinfo, info);
+		if (unlikely(ret))
+			goto err;

I think you're misreading here. It jumps to:

err:
        fdput(f);
	return ret;

and does propagate the error. This is also an old iteration of the patch.

Christian

What's the reason you don't propagate up the errors from __copy_siginfo_from_user()?
Granted, I admit that -E2BIG is kind of weird to return, but -EFAULT seems like a
fairly sane error.

Or is there some reason it's more useful to just return -EINVAL for all of the
failure cases here?

-- 
Cheers,
Joey Pabalinas