[Devel] [PATCH vz7] net: Skip IP_FREEBIND for ipv6 SOCK_RAW sockets

Kirill Tkhai ktkhai at virtuozzo.com
Tue Mar 20 14:07:51 MSK 2018


IP_FREEBIND is not supported for SOCK_RAW ipv6 sockets.
See kernel rawv6_setsockopt() for the details.

JFI:
For the rest of sockets, where they begin to support it:
the actual magic happens in do_ipv6_setsockopt(), and
IPV6_ADDRFORM optname changes sk->sk_prot to refer
to tcp_prot, udp_prot and udplite_prot, which contains
link to ip_setsockopt().

Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
---
 criu/sk-inet.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/criu/sk-inet.c b/criu/sk-inet.c
index 941de1863..4fccda48c 100644
--- a/criu/sk-inet.c
+++ b/criu/sk-inet.c
@@ -813,7 +813,7 @@ int inet_bind(int sk, struct inet_sk_info *ii)
 	 * sockets could not be bound to them in this moment
 	 * without setting IP_FREEBIND.
 	 */
-	if (ii->ie->family == AF_INET6 && ii->ie->proto != IPPROTO_RAW) {
+	if (ii->ie->family == AF_INET6 && ii->ie->type != SOCK_RAW) {
 		int yes = 1;
 
 		if (restore_opt(sk, SOL_IP, IP_FREEBIND, &yes))



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