From: Jeff Layton <jlayton@redhat.com>
Date: Fri, 14 Aug 2009 17:33:02 +0000 (-0400)
Subject: Allow nfssvc_setfds to properly deal with AF_INET6.
X-Git-Tag: nfs-utils-1-2-1-rc3~2
X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=commitdiff_plain;h=513acad321c325207a9d8f7f0129253b0e2b6d11

Allow nfssvc_setfds to properly deal with AF_INET6.

IPv6 sockets for knfsd can't be allowed to accept IPv4 packets. Set the
correct option to prevent that from occurring on IPv6 sockets.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
---

diff --git a/utils/nfsd/nfssvc.c b/utils/nfsd/nfssvc.c
index 106f6e7..ee862b2 100644
--- a/utils/nfsd/nfssvc.c
+++ b/utils/nfsd/nfssvc.c
@@ -81,6 +81,11 @@ nfssvc_setfds(const struct addrinfo *hints, const char *node, const char *port)
 	case AF_INET:
 		family = "inet";
 		break;
+#ifdef IPV6_SUPPORTED
+	case AF_INET6:
+		family = "inet6";
+		break;
+#endif /* IPV6_SUPPORTED */
 	default:
 		xlog(L_ERROR, "Unknown address family specified: %d\n",
 				hints->ai_family);
@@ -128,6 +133,15 @@ nfssvc_setfds(const struct addrinfo *hints, const char *node, const char *port)
 			rc = errno;
 			goto error;
 		}
+#ifdef IPV6_SUPPORTED
+		if (addr->ai_family == AF_INET6 &&
+		    setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on))) {
+			xlog(L_ERROR, "unable to set IPV6_V6ONLY: "
+				"errno %d (%m)\n", errno);
+			rc = errno;
+			goto error;
+		}
+#endif /* IPV6_SUPPORTED */
 		if (addr->ai_protocol == IPPROTO_TCP &&
 		    setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on))) {
 			xlog(L_ERROR, "unable to set SO_REUSEADDR on %s "