Re: [PATCH] xfs: replace deprecated strncpy with strscpy_pad

[Justin Stitt]

On Tue, Apr 9, 2024 at 9:22 AM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> >
> > -     /* 1 larger than sb_fname, so this ensures a trailing NUL char */
> > -     memset(label, 0, sizeof(label));
> >       spin_lock(&mp->m_sb_lock);
> > -     strncpy(label, sbp->sb_fname, XFSLABEL_MAX);
> > +     strscpy_pad(label, sbp->sb_fname);
>
> Is sbp->sb_fname itself NUL-terminated? This looks like another case of
> needing the memtostr() helper?
>

I sent a patch [1].

Obviously it depends on your implementation patch landing first; what
tree should it go to?

> Kees Cook

[1]: https://lore.kernel.org/r/20240410-strncpy-xfs-split1-v2-1-7c651502bcb0@xxxxxxxxxx