NeilBrown: ddf: make sure Create fails if devices are too small.

[Martin F. Krafft]

Module: mdadm
Branch: debian/experimental
Commit: ea17e7aa302355b52247a017ed388fc51317008e
URL:    http://git.debian.org/?p=pkg-mdadm/mdadm.git;a=commit;h=ea17e7aa302355b52247a017ed388fc51317008e

Author: NeilBrown <neilb at suse.de>
Date:   Thu Apr  2 14:02:33 2009 +1100

ddf: make sure Create fails if devices are too small.

Signed-off-by: NeilBrown <neilb at suse.de>

---

 super-ddf.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/super-ddf.c b/super-ddf.c
index 11a3bac..7cc5ac6 100644
--- a/super-ddf.c
+++ b/super-ddf.c
@@ -2651,6 +2651,8 @@ validate_geometry_ddf_container(struct supertype *st,
 	close(fd);
 
 	*freesize = avail_size_ddf(st, ldsize >> 9);
+	if (*freesize == 0)
+		return 0;
 
 	return 1;
 }