discover/grub2: Add support for UUID and label for 'search' command

This change adds support for searching by UUID and filesystem label.
We still fall back to passthrough if the UUID is not found, but we now
resolve to device ID strings.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/test/parser/test-grub2-search-label.c b/test/parser/test-grub2-search-label.c
new file mode 100644
index 0000000..b9ee034
--- /dev/null
+++ b/test/parser/test-grub2-search-label.c
@@ -0,0 +1,47 @@
+/* check for grub2 search command, searching by partition label */
+
+#include "parser-test.h"
+
+#if 0 /* PARSER_EMBEDDED_CONFIG */
+
+# valid label
+search --set=v1 --label testlabel
+
+v2=prev
+# invalid label: does not alter v2
+search --set=v2 --label invalidlabel
+
+menuentry $v1 {
+    linux /vmlinux
+}
+
+menuentry $v2 {
+    linux /vmlinux
+}
+
+#endif
+
+void run_test(struct parser_test *test)
+{
+	struct discover_boot_option *opt;
+	struct discover_context *ctx;
+	struct discover_device *dev;
+
+	ctx = test->ctx;
+
+	dev = test_create_device(test, "testdev");
+	dev->label = "testlabel";
+	device_handler_add_device(test->handler, dev);
+
+	test_read_conf_embedded(test, "/grub/grub.cfg");
+
+	test_run_parser(test, "grub2");
+
+	check_boot_option_count(ctx, 2);
+
+	opt = get_boot_option(ctx, 0);
+	check_name(opt, "testdev");
+
+	opt = get_boot_option(ctx, 1);
+	check_name(opt, "prev");
+}