Fix losetup -r flag when we specify 'w!' for the disk mode.

From: Zhigang Wang <zhigang.x.wang@oracle.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
xen-unstable changeset:   16880:78a29cf8476b6e6720edbfb4c89c3809be227ffe
xen-unstable date:        Fri Jan 25 13:22:52 2008 +0000

diff --git a/tools/examples/block b/tools/examples/block
index 566a8acba376cfef58b6cf27d91bb1441c847e79..f4c64c82b3b8fc177eceea59fe712686196fcaf9 100644 (file)
--- a/tools/examples/block
+++ b/tools/examples/block
@@ -369,7 +369,7 @@ mount it read-write in a guest domain."
 
         if LANG=C losetup -h 2>&1 | grep read-only >/dev/null
         then
-          roflag="-$mode"; roflag="${roflag#-w}"
+          roflag="-$mode"; roflag="${roflag#-w}"; roflag="${roflag#-!}"
         else
           roflag=''
         fi