Revert "metadata: drop support for kernels < v3.15"

This reverts commit 53711b606ed83f9b8dd7dc1f3832a01bd6409d79.

diff --git a/metadata.c b/metadata.c
index a3c52ef6dd261e507d942e3a42a400f3bea719e4..9430ce6d16a7e44f6c3407d787d97e96f7c27cff 100644 (file)
--- a/metadata.c
+++ b/metadata.c
@@ -382,7 +382,15 @@ static int kdbus_meta_append_cgroup(struct kdbus_meta *meta)
        if (!buf)
                return -ENOMEM;
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)
        path = task_cgroup_path(current, buf, PAGE_SIZE);
+#else
+       ret = task_cgroup_path(current, buf, PAGE_SIZE);
+       if (ret < 0)
+               path = NULL;
+       else
+               path = buf;
+#endif
 
        if (path)
                ret = kdbus_meta_append_str(meta, KDBUS_ITEM_CGROUP, path);