X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd%2Fsd-rtnl%2Fsd-rtnl.c;h=f483af991bc2f8e46861c77641703047d06249bb;hb=913b0eef1a01e0c78f0453b0174e75d5caae1023;hp=ae49c77e018f4e023c11b519453e4de01c4d6b38;hpb=760f409a4add18e1b6ca773c2ccab01162885b9f;p=elogind.git

diff --git a/src/libsystemd/sd-rtnl/sd-rtnl.c b/src/libsystemd/sd-rtnl/sd-rtnl.c
index ae49c77e0..f483af991 100644
--- a/src/libsystemd/sd-rtnl/sd-rtnl.c
+++ b/src/libsystemd/sd-rtnl/sd-rtnl.c
@@ -61,6 +61,11 @@ static int sd_rtnl_new(sd_rtnl **ret) {
                             sizeof(struct nlmsghdr), sizeof(uint8_t)))
                 return -ENOMEM;
 
+        /* Change notification responses have sequence 0, so we must
+         * start our request sequence numbers at 1, or we may confuse our
+         * responses with notifications from the kernel */
+        rtnl->serial = 1;
+
         *ret = rtnl;
         rtnl = NULL;
 
@@ -257,7 +262,7 @@ static void rtnl_seal_message(sd_rtnl *rtnl, sd_rtnl_message *m) {
         assert(m);
         assert(m->hdr);
 
-        m->hdr->nlmsg_seq = rtnl->serial++;
+        m->hdr->nlmsg_seq = rtnl->serial++ ? : rtnl->serial++;
 
         rtnl_message_seal(m);
 
@@ -993,7 +998,7 @@ int sd_rtnl_add_match(sd_rtnl *rtnl,
         assert_return(!rtnl_pid_changed(rtnl), -ECHILD);
         assert_return(rtnl_message_type_is_link(type) ||
                       rtnl_message_type_is_addr(type) ||
-                      rtnl_message_type_is_route(type), -ENOTSUP);
+                      rtnl_message_type_is_route(type), -EOPNOTSUPP);
 
         c = new0(struct match_callback, 1);
         if (!c)