Preliminary -As support for container member arrays

Given an mdadm.conf like the following allow /dev/imsm and /dev/md/r1 to be
created by "mdadm -As".

DEVICES partitions 
ARRAY /dev/imsm metadata=imsm auto=md UUID=b98f5dbe-aa859e7b-0e369b89-a80986d4 
ARRAY /dev/md/r1 container=/dev/imsm member=0 auto=mdp UUID=3538e39c-b397c2e9-1aa031f9-2bc0eca4 
   spares=1

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/util.c b/util.c
index 379403d..dee0497 100644
--- a/util.c
+++ b/util.c
@@ -1278,6 +1278,15 @@ void append_metadata_update(struct supertype *st, void *buf, int len)
 	*st->update_tail = mu;
 	st->update_tail = &mu->next;
 }
+
+struct superswitch *find_metadata_methods(char *vers)
+{
+	if (strcmp(vers, "ddf") == 0)
+		return &super_ddf;
+	if (strcmp(vers, "imsm") == 0)
+		return &super_imsm;
+	return NULL;
+}
 #endif /* MDASSEMBLE */
 
 #ifdef __TINYC__