[libvirt] [PATCH] virsh: Add VSH_OFLAG_EMPTY_OK for attach-disk command

[Xu He Jie]

As the description of removing CDROM media from 
  http://wiki.libvirt.org/page/QEMUSwitchToLibvirt#eject_DEV

Add flag 'VSH_OFLAG_EMPTY_OK' to the option 'source' of attach-disk

Signed-off-by: Xu He Jie <xuhj at linux.vnet.ibm.com>
---
 tools/virsh.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index 5544a41..e7eae74 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -11569,7 +11569,7 @@ static const vshCmdInfo info_attach_disk[] = {
 
 static const vshCmdOptDef opts_attach_disk[] = {
     {"domain",  VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
-    {"source",  VSH_OT_DATA, VSH_OFLAG_REQ, N_("source of disk device")},
+    {"source",  VSH_OT_DATA, VSH_OFLAG_REQ | VSH_OFLAG_EMPTY_OK, N_("source of disk device")},
     {"target",  VSH_OT_DATA, VSH_OFLAG_REQ, N_("target of disk device")},
     {"driver",    VSH_OT_STRING, 0, N_("driver of disk device")},
     {"subdriver", VSH_OT_STRING, 0, N_("subdriver of disk device")},
-- 
1.7.5.4