diff options
Diffstat (limited to 'block.c')
| -rw-r--r-- | block.c | 19 |
1 files changed, 12 insertions, 7 deletions
@@ -763,12 +763,15 @@ static void bdrv_assign_node_name(BlockDriverState *bs, const char *node_name, Error **errp) { - if (!node_name) { - return; - } + char *gen_node_name = NULL; - /* Check for empty string or invalid characters */ - if (!id_wellformed(node_name)) { + if (!node_name) { + node_name = gen_node_name = id_generate(ID_BLOCK); + } else if (!id_wellformed(node_name)) { + /* + * Check for empty string or invalid characters, but not if it is + * generated (generated names use characters not available to the user) + */ error_setg(errp, "Invalid node name"); return; } @@ -777,18 +780,20 @@ static void bdrv_assign_node_name(BlockDriverState *bs, if (blk_by_name(node_name)) { error_setg(errp, "node-name=%s is conflicting with a device id", node_name); - return; + goto out; } /* takes care of avoiding duplicates node names */ if (bdrv_find_node(node_name)) { error_setg(errp, "Duplicate node name"); - return; + goto out; } /* copy node name into the bs and insert it into the graph list */ pstrcpy(bs->node_name, sizeof(bs->node_name), node_name); QTAILQ_INSERT_TAIL(&graph_bdrv_states, bs, node_list); +out: + g_free(gen_node_name); } static QemuOptsList bdrv_runtime_opts = { |