[PATCH] blspec: Allow the "options" key to be given multiple times

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The Boot Loader Spec says:
"This key is optional and may appear more than once in which case all
specified parameters are used in the order they are listed."

Signed-off-by: Robert Karszniewicz <r.karszniewicz@xxxxxxxxx>
---
 common/blspec.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/blspec.c b/common/blspec.c
index 1a6d581..3be26d0 100644
--- a/common/blspec.c
+++ b/common/blspec.c
@@ -298,6 +298,18 @@ static struct blspec_entry *blspec_entry_open(struct bootentries *bootentries,
 
 		val = end;
 
+		if (!strcmp(name, "options")) {
+			/* If there was a previous "options" key given, prepend its value
+			 * (as per spec). */
+			char *prev_val = blspec_entry_var_get(entry, name);
+			if (prev_val) {
+				char *opts = xasprintf("%s %s", prev_val, val);
+				blspec_entry_var_set(entry, name, opts);
+				free(opts);
+				continue;
+			}
+		}
+
 		blspec_entry_var_set(entry, name, val);
 	}
 
-- 
2.7.4


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