[Bug 221854] makefs: Reject UFS labels that are too long to fit

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 30 Sep 2021 21:02:51 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221854

Piotr Pawel Stefaniak <pstef@freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |pstef@freebsd.org

--- Comment #2 from Piotr Pawel Stefaniak <pstef@freebsd.org> ---
In 2017, Ed imported option parsing from NetBSD so this patch no longer
applies. While I support the improvement, it has the side effect that since all
strings are handled like this:
                case OPT_STRARRAY:
                        strlcpy((void *)options[i].value, val, (size_t)
                            options[i].maximum);
                        break;
you can't be selective about which truncation is tolerable and which is not.

Ed, maybe we should reject any and all truncation errors in this path?

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