On Fri, Mar 08, 2013 at 06:08:52PM -0800, Linus Torvalds wrote:
> On Fri, Mar 8, 2013 at 6:03 PM, Dave Jones <[email protected]> wrote:
> >
> > existing pathname + 'a' = fine.
> >
> > existing pathname + '/' + 'a' = boom.
>
> Good.
>
> > Looks like if I do this..
> >
> > if (isdigit(newpath[len]) != 0) {
> > newpath[len] = '/';
> > newpath[len+1] = 'A';
> > newpath[len+2] = 0;
> >
> > no bug.
>
> Well, but that will never trigger. newpath[len] will always be NUL, so
> you just disabled things entirely. Use "len-1".
>
> So I don't think that did what you meant it to do.
Fixed that up, and even double checked my sanity by printing stuff out.
Confirmed that it's something that doesn't end in a number.
Dave
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