tests: check netlink family specific decoder of NETLINK_ROUTE

* tests/netlink_route.c: Include <stdint.h>,
include "test_netlink.h" instead of "netlink.h".
(test_rtnl_unspec): New function.
(main): Use it.

Co-authored-by: Fabien Siron <fabien.siron@epita.fr>

diff --git a/tests/netlink_route.c b/tests/netlink_route.c
index 54a54b7e73a9cd5aa2ef79380f114d75df5ae6d0..c5b28faf63dd96b85c77ccd1462f4013c0128ace 100644 (file)
--- a/tests/netlink_route.c
+++ b/tests/netlink_route.c
@@ -27,10 +27,11 @@
 
 #include "tests.h"
 #include <stdio.h>
+#include <stdint.h>
 #include <string.h>
 #include <unistd.h>
 #include <sys/socket.h>
-#include "netlink.h"
+#include "test_netlink.h"
 #include <linux/rtnetlink.h>
 
 static void
@@ -92,6 +93,56 @@ test_nlmsg_flags(const int fd)
               (unsigned) sizeof(nlh), sprintrc(rc));
 }
 
+static void
+test_rtnl_unspec(const int fd)
+{
+       void *const nlh0 = tail_alloc(NLMSG_HDRLEN);
+
+       /* unspecified family only */
+       uint8_t family = 0;
+       TEST_NETLINK_(fd, nlh0,
+                     0xffff, "0xffff /* RTM_??? */",
+                     NLM_F_REQUEST, "NLM_F_REQUEST",
+                     sizeof(family), &family, sizeof(family),
+                     printf("{family=AF_UNSPEC}"));
+
+       /* unknown family only */
+       family = 0xff;
+       TEST_NETLINK_(fd, nlh0,
+                     0xffff, "0xffff /* RTM_??? */",
+                     NLM_F_REQUEST, "NLM_F_REQUEST",
+                     sizeof(family), &family, sizeof(family),
+                     printf("{family=0xff /* AF_??? */}"));
+
+       /* short read of family */
+       TEST_NETLINK_(fd, nlh0,
+                     0xffff, "0xffff /* RTM_??? */",
+                     NLM_F_REQUEST, "NLM_F_REQUEST",
+                     sizeof(family), &family, sizeof(family) - 1,
+                     printf("%p", NLMSG_DATA(TEST_NETLINK_nlh)));
+
+       /* unspecified family and string */
+       char buf[sizeof(family) + 4];
+       family = 0;
+       memcpy(buf, &family, sizeof(family));
+       memcpy(buf + sizeof(family), "1234", 4);
+       TEST_NETLINK_(fd, nlh0,
+                     0xffff, "0xffff /* RTM_??? */",
+                     NLM_F_REQUEST, "NLM_F_REQUEST",
+                     sizeof(buf), buf, sizeof(buf),
+                     printf("{family=AF_UNSPEC, \"\\x31\\x32\\x33\\x34\"}"));
+
+       /* unknown family and string */
+       family = 0xfd;
+       memcpy(buf, &family, sizeof(family));
+       TEST_NETLINK_(fd, nlh0,
+                     0xffff, "0xffff /* RTM_??? */",
+                     NLM_F_REQUEST, "NLM_F_REQUEST",
+                     sizeof(buf), buf, sizeof(buf),
+                     printf("{family=%#x /* AF_??? */"
+                            ", \"\\x31\\x32\\x33\\x34\"}", family));
+}
+
 int main(void)
 {
        skip_if_unavailable("/proc/self/fd/");
@@ -100,6 +151,7 @@ int main(void)
 
        test_nlmsg_type(fd);
        test_nlmsg_flags(fd);
+       test_rtnl_unspec(fd);
 
        printf("+++ exited with 0 +++\n");