Hello,
On Sat, Nov 21, 2015 at 05:56:06PM +0100, Florian Westphal wrote:
> > +struct xt_cgroup_info_v1 {
> > + __u8 has_path;
> > + __u8 has_classid;
> > + __u8 invert_path;
> > + __u8 invert_classid;
> > + char path[PATH_MAX];
> > + __u32 classid;
> > +
> > + /* kernel internal data */
> > + void *priv __attribute__((aligned(8)));
> > +};
>
> Ahem. Am I reading this right? This struct is > 4k in size?
> If so -- Ugh. Does sizeof(path) really have to be PATH_MAX?
Hmmm... yeap but would this be an acutual problem? We can try to make
it shorter but idk it ultimately is a path. Another solution would be
trying to pass inode around but that is problematic with showing and
printing rules as the only way to reverse-map inode to path is walking
the tree and the cgroup may already be gone at that point. While >4k
struct isn't pretty, this looks like the path of least resistance.
Thanks.
--
tejun
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