socket-util: add AF_VSOCK address family

The AF_VSOCK address family facilitates guest<->host communication on
VMware and KVM (virtio-vsock).  Adding support to systemd allows guest
agents to be launched through .socket unit files.  Today guest agents
are stand-alone daemons running inside guests that do not take advantage
of systemd socket activation.

1 files changed, 26 insertions, 0 deletions

diff --git a/src/test/test-socket-util.c b/src/test/test-socket-util.c
index 1f853a7f16..d80613dc84 100644
--- a/src/test/test-socket-util.c
+++ b/src/test/test-socket-util.c
@@ -92,6 +92,14 @@ static void test_socket_address_parse(void) {
 
         assert_se(socket_address_parse(&a, "@abstract") >= 0);
         assert_se(a.sockaddr.sa.sa_family == AF_UNIX);
+
+        assert_se(socket_address_parse(&a, "vsock::1234") >= 0);
+        assert_se(a.sockaddr.sa.sa_family == AF_VSOCK);
+        assert_se(socket_address_parse(&a, "vsock:2:1234") >= 0);
+        assert_se(a.sockaddr.sa.sa_family == AF_VSOCK);
+        assert_se(socket_address_parse(&a, "vsock:2:1234x") < 0);
+        assert_se(socket_address_parse(&a, "vsock:2x:1234") < 0);
+        assert_se(socket_address_parse(&a, "vsock:2") < 0);
 }
 
 static void test_socket_address_parse_netlink(void) {
@@ -145,6 +153,14 @@ static void test_socket_address_equal(void) {
         assert_se(socket_address_parse_netlink(&a, "firewall") >= 0);
         assert_se(socket_address_parse_netlink(&b, "firewall") >= 0);
         assert_se(socket_address_equal(&a, &b));
+
+        assert_se(socket_address_parse(&a, "vsock:2:1234") >= 0);
+        assert_se(socket_address_parse(&b, "vsock:2:1234") >= 0);
+        assert_se(socket_address_equal(&a, &b));
+        assert_se(socket_address_parse(&b, "vsock:2:1235") >= 0);
+        assert_se(!socket_address_equal(&a, &b));
+        assert_se(socket_address_parse(&b, "vsock:3:1234") >= 0);
+        assert_se(!socket_address_equal(&a, &b));
 }
 
 static void test_socket_address_get_path(void) {
@@ -161,6 +177,9 @@ static void test_socket_address_get_path(void) {
 
         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
         assert_se(streq(socket_address_get_path(&a), "/foo/bar"));
+
+        assert_se(socket_address_parse(&a, "vsock:2:1234") >= 0);
+        assert_se(!socket_address_get_path(&a));
 }
 
 static void test_socket_address_is(void) {
@@ -408,11 +427,18 @@ static void test_sockaddr_equal(void) {
                 .in6.sin6_port = 0,
                 .in6.sin6_addr = IN6ADDR_ANY_INIT,
         };
+        union sockaddr_union e = {
+                .vm.svm_family = AF_VSOCK,
+                .vm.svm_port = 0,
+                .vm.svm_cid = VMADDR_CID_ANY,
+        };
         assert_se(sockaddr_equal(&a, &a));
         assert_se(sockaddr_equal(&a, &b));
         assert_se(sockaddr_equal(&d, &d));
+        assert_se(sockaddr_equal(&e, &e));
         assert_se(!sockaddr_equal(&a, &c));
         assert_se(!sockaddr_equal(&b, &c));
+        assert_se(!sockaddr_equal(&a, &e));
 }
 
 static void test_sockaddr_un_len(void) {