Fix bootchooser for the output of efibootmgr 18

Since efibootmgr 18, the default output of `efibootmgr` is now more
verbose [1], which breaks the assumptions made by RAUC in regards to
parsing the output. This issue is also affecting others [2].

Fix the parsing logic by unconditionally splitting on a tab in the
detected name part of the boot entry, so that the unused data part can
be discarded.
Emit a debug message for each found boot entry, as this helps in
detecting issues in the future.

[1] rhboot/efibootmgr@8ec3e9d
[2] rhboot/efibootmgr#169

Signed-off-by: David Runge <[email protected]>

src/bootchooser.c

@@ -1159,11 +1159,26 @@ static gboolean efi_bootorder_get(GList **bootorder_entries, GList **all_entries
 	}
 
 	while (g_match_info_matches(match)) {
+		gchar **name_data_splits = NULL;
 		efi_bootentry *entry = g_new0(efi_bootentry, 1);
+
+		name_data_splits = g_strsplit(g_match_info_fetch(match, 2), "\t", 0);
+		if (g_strv_length (name_data_splits) == 0) {
+			g_set_error(
+					error,
+					R_BOOTCHOOSER_ERROR,
+					R_BOOTCHOOSER_ERROR_FAILED,
+					"Extracting a boot entry name failed!");
+			res = FALSE;
+			goto out;
+		}
+
 		entry->num = g_match_info_fetch(match, 1);
-		entry->name = g_match_info_fetch(match, 2);
+		entry->name = g_strdup(name_data_splits[0]);
 		entries = g_list_append(entries, entry);
 		g_match_info_next(match, NULL);
+		g_debug("Detected boot entry %s: %s", entry->num, entry->name);
+		g_strfreev(name_data_splits);
 	}
 
 	g_clear_pointer(&regex, g_regex_unref);