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| author | Ondrej Zajicek <santiago@crfreenet.org> | 2010-04-04 15:41:31 +0200 |
|---|---|---|
| committer | Ondrej Zajicek <santiago@crfreenet.org> | 2010-04-04 15:41:31 +0200 |
| commit | c429d4a4ba2cc8778634461e8adea33e0f0ae022 (patch) | |
| tree | 5cc8102345bf3ce872da92aca84fa63cf67c4e20 /sysdep/linux | |
| parent | d2d2b5d2ae43f608d03304d280367b658650138b (diff) | |
| download | bird-c429d4a4ba2cc8778634461e8adea33e0f0ae022.tar bird-c429d4a4ba2cc8778634461e8adea33e0f0ae022.zip | |
Restrict export of device routes to the kernel protocol.
In usual configuration, such export is already restricted
with the aid of the direct protocol but there are some
races that can circumvent it. This makes it harder to
break kernel device routes. Also adds an option to
disable this restriction.
Diffstat (limited to 'sysdep/linux')
| -rw-r--r-- | sysdep/linux/netlink/netlink.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c index b59b32f..f31ef9f 100644 --- a/sysdep/linux/netlink/netlink.c +++ b/sysdep/linux/netlink/netlink.c @@ -460,20 +460,14 @@ krt_capable(rte *e) { rta *a = e->attrs; - if (a->cast != RTC_UNICAST -#if 0 - && a->cast != RTC_ANYCAST -#endif - ) - return 0; - if (a->source == RTS_DEVICE) /* Kernel takes care of device routes itself */ + if (a->cast != RTC_UNICAST) return 0; + switch (a->dest) { case RTD_ROUTER: if (ipa_has_link_scope(a->gw) && (a->iface == NULL)) return 0; - case RTD_DEVICE: case RTD_BLACKHOLE: case RTD_UNREACHABLE: |