tree-wide: there is no ENOTSUP on linux

[elogind.git] / src / libsystemd / sd-rtnl / sd-rtnl.c

diff --git a/src/libsystemd/sd-rtnl/sd-rtnl.c b/src/libsystemd/sd-rtnl/sd-rtnl.c
index 45ba50a856be11dcaf553e0acd28fb8db7145457..268d3660506a8731ff1ae3f4024ae93cfa0a4302 100644 (file)
--- 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;
 
@@ -146,7 +151,8 @@ static int rtnl_open_fd_ap(sd_rtnl **ret, int fd, unsigned n_groups, va_list ap)
         addrlen = sizeof(rtnl->sockaddr);
 
         r = bind(fd, &rtnl->sockaddr.sa, addrlen);
-        if (r < 0)
+        /* ignore EINVAL to allow opening an already bound socket */
+        if (r < 0 && errno != EINVAL)
                 return -errno;
 
         r = getsockname(fd, &rtnl->sockaddr.sa, &addrlen);
@@ -992,7 +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)