# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1198208933 -32400
# Node ID 7e85a4e784c8275c6630dbb2eb537042022adfd9
# Parent  506c05bad4634203ef336ac249a66f80d45eab96
fix XEN_DOMCTL_shadow_op. it should check copy_to_guest() return value.
Pointed out by Samuel Thibault.
PATCHNAME: fix_xen_domctl_shadow_op

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 506c05bad463 -r 7e85a4e784c8 xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c	Fri Dec 21 12:33:44 2007 +0900
+++ b/xen/arch/ia64/xen/dom0_ops.c	Fri Dec 21 12:48:53 2007 +0900
@@ -168,7 +168,8 @@ long arch_do_domctl(xen_domctl_t *op, XE
         {
             ret = shadow_mode_control(d, &op->u.shadow_op);
             put_domain(d);
-            copy_to_guest(u_domctl, op, 1);
+            if (copy_to_guest(u_domctl, op, 1))
+                ret = -EFAULT;
         } 
     }
     break;