LLDP: Add support for networkctl

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

diff --git a/src/libsystemd/sd-network/sd-network.c b/src/libsystemd/sd-network/sd-network.c
index d63e6f9dfa8bb990aada6332f9348d251c2f9a59..c735cac3b1209ee59b6560e9ab715d4023e6c547 100644 (file)
--- a/src/libsystemd/sd-network/sd-network.c
+++ b/src/libsystemd/sd-network/sd-network.c
@@ -192,6 +192,32 @@ _public_ int sd_network_link_get_llmnr(int ifindex, char **llmnr) {
         return 0;
 }
 
+_public_ int sd_network_link_get_lldp(int ifindex, char **lldp) {
+        _cleanup_free_ char *s = NULL, *p = NULL;
+        size_t size;
+        int r;
+
+        assert_return(ifindex > 0, -EINVAL);
+        assert_return(lldp, -EINVAL);
+
+        if (asprintf(&p, "/run/systemd/netif/lldp/%d", ifindex) < 0)
+                return -ENOMEM;
+
+        r = read_full_file(p, &s, &size);
+        if (r == -ENOENT)
+                return -ENODATA;
+        if (r < 0)
+                return r;
+        if (size <= 0)
+                return -ENODATA;
+
+        *lldp = s;
+        s = NULL;
+
+        return 0;
+}
+
+
 static int network_get_link_strv(const char *key, int ifindex, char ***ret) {
         _cleanup_free_ char *p = NULL, *s = NULL;
         _cleanup_strv_free_ char **a = NULL;