On Fri, Feb 02, 2018 at 01:12:08PM +0100, Jan Engelhardt wrote:
> On Friday 2018-02-02 12:55, Pablo Neira Ayuso wrote:
>
> >On Fri, Feb 02, 2018 at 12:49:38PM +0100, Pablo Neira Ayuso wrote:
> >[...]
> >> bool net_valid_name(const char *name, size_t len)
> >> {
> >> ...
> >> }
> >
> >Am I missing anything in all these tricky string handling? Thanks!
>
> One will have to watch out for calls like
>
> net_valid_name(NLA_DATA(some_ifla_name), IFNAMSIZ)
>
> because quite some nlattrs (IFLA_NAME, IFLA_IFNAME to boot) are NLA_STRINGs
> (rather than NLA_NUL_STRINGs) and they are not \0-terminated.
As long as we use nla_str*() helpers, we're all good.
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