Re: netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'

On Fri, Dec 01, 2017 at 03:48:59AM +0000, Al Viro wrote:

Something similar to get_prog_path_type() above might make for a usable
primitive, IMO...

Incidentally, bpf_obj_get_user()/bpf_obj_do_get() should just use
user_path(), rather than wanking with getname()+kern_path(pname->name)+putname().
Note that kern_path() will do getname_kernel() to get struct pathname...

Would cause problems for tracepoints in there, though.  And that, BTW,
is precisely why I don't want tracepoints in core VFS, TYVM - makes
restructuring the code harder...