From: Vincent Bernat <vincent@bernat.im>
Date: Wed, 18 Mar 2015 13:34:54 +0000 (+0100)
Subject: priv: fallback to SOCK_DGRAM if SOCK_SEQPACKET not available
X-Git-Tag: 0.7.14~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c642d8c7b9e4cd52f3efc155ce402330949c4f57;p=thirdparty%2Flldpd.git

priv: fallback to SOCK_DGRAM if SOCK_SEQPACKET not available
---

diff --git a/src/daemon/priv.c b/src/daemon/priv.c
index f00297ee..00e18846 100644
--- a/src/daemon/priv.c
+++ b/src/daemon/priv.c
@@ -591,8 +591,16 @@ priv_init(const char *chrootdir, int ctl, uid_t uid, gid_t gid)
 	int pair[2];
 
 	/* Create socket pair */
-	if (socketpair(AF_UNIX, SOCK_SEQPACKET, PF_UNSPEC, pair) < 0)
-		fatal("privsep", "unable to create socket pair for privilege separation");
+	if (socketpair(AF_UNIX, SOCK_SEQPACKET, PF_UNSPEC, pair) < 0) {
+		if (errno == EAFNOSUPPORT ||
+		    errno == EOPNOTSUPP ||
+		    errno == EPROTONOSUPPORT) {
+			if (socketpair(AF_UNIX, SOCK_DGRAM, PF_UNSPEC, pair) < 0) {
+				fatal("privsep",
+				    "unable to create socket pair for privilege separation");
+			}
+		}
+	}
 
 	priv_unprivileged_fd(pair[0]);
 	priv_privileged_fd(pair[1]);