Files
linux/net/netfilter
Pablo Neira Ayuso 8c2d45b2b6 netfilter: nf_tables: Allow set back-ends to report partial overlaps on insertion
Currently, the -EEXIST return code of ->insert() callbacks is ambiguous: it
might indicate that a given element (including intervals) already exists as
such, or that the new element would clash with existing ones.

If identical elements already exist, the front-end is ignoring this without
returning error, in case NLM_F_EXCL is not set. However, if the new element
can't be inserted due an overlap, we should report this to the user.

To this purpose, allow set back-ends to return -ENOTEMPTY on collision with
existing elements, translate that to -EEXIST, and return that to userspace,
no matter if NLM_F_EXCL was set.

Reported-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-03-24 19:58:57 +01:00
..
2019-09-26 08:56:17 +02:00
2019-12-09 10:36:44 -08:00
2019-12-09 10:36:44 -08:00
2019-12-09 10:36:44 -08:00
2019-12-09 10:36:44 -08:00
2019-11-05 14:03:11 -08:00
2019-11-15 23:44:45 +01:00