Re: [Libguestfs] [libnbd PATCH v2 2/2] info: List available meta-contexts

Use the just-added nbd_opt_list_meta_context() API to give more details about each export (matching what 'qemu-nbd --list' already does). Note that this requires some shuffling: listing meta exports requires being in opt mode, but is easiest to do in list_one_export(), which requires setting opt_mode in more code paths, and deferring ready mode until the last possible minute during get_content(). As written, the code displays the list in reverse order from how the server presented it, thanks to my use of a simple linked list. We could use a different data type if we don't like the data being reversed, although the information being presented really is a set with no inherent meaning to its presentation order. ---

@@ -368,8 +396,15 @@ list_one_export (struct nbd_handle *nbd, const char *desc, int can_cache, can_df, can_fast_zero, can_flush, can_fua, can_multi_conn, can_trim, can_zero; int64_t block_minimum, block_preferred, block_maximum; + struct context_list *contexts = NULL; + bool show_context = false; /* Collect the metadata we are going to display. */ + if (nbd_aio_is_negotiating (nbd) && + nbd_opt_info (nbd) == -1) { + fprintf (stderr, "%s\n", nbd_get_error ()); + exit (EXIT_FAILURE); + }