diff -NurpP --minimal linux-2.6.32-rc8-vs2.3.0.36.25.1/include/linux/vserver/context_cmd.h linux-2.6.32-rc8-vs2.3.0.36.25.2/include/linux/vserver/context_cmd.h
--- linux-2.6.32-rc8-vs2.3.0.36.25.1/include/linux/vserver/context_cmd.h	2009-11-22 22:24:43.000000000 +0100
+++ linux-2.6.32-rc8-vs2.3.0.36.25.2/include/linux/vserver/context_cmd.h	2009-11-23 07:41:03.000000000 +0100
@@ -111,6 +111,23 @@ extern int vc_set_bcaps(struct vx_info *
 #endif	/* __KERNEL__ */
 
 
+/* umask commands */
+
+#define VCMD_get_umask		VC_CMD(FLAGS, 13, 0)
+#define VCMD_set_umask		VC_CMD(FLAGS, 14, 0)
+
+struct	vcmd_umask {
+	uint64_t umask;
+	uint64_t mask;
+};
+
+#ifdef	__KERNEL__
+extern int vc_get_umask(struct vx_info *, void __user *);
+extern int vc_set_umask(struct vx_info *, void __user *);
+
+#endif	/* __KERNEL__ */
+
+
 /* OOM badness */
 
 #define VCMD_get_badness	VC_CMD(MEMCTRL, 5, 0)
diff -NurpP --minimal linux-2.6.32-rc8-vs2.3.0.36.25.1/kernel/vserver/context.c linux-2.6.32-rc8-vs2.3.0.36.25.2/kernel/vserver/context.c
--- linux-2.6.32-rc8-vs2.3.0.36.25.1/kernel/vserver/context.c	2009-11-23 05:38:01.000000000 +0100
+++ linux-2.6.32-rc8-vs2.3.0.36.25.2/kernel/vserver/context.c	2009-11-23 07:45:45.000000000 +0100
@@ -1004,6 +1004,31 @@ int vc_set_bcaps(struct vx_info *vxi, vo
 }
 
 
+int vc_get_umask(struct vx_info *vxi, void __user *data)
+{
+	struct vcmd_umask vc_data;
+
+	vc_data.umask = vxi->vx_umask;
+	vc_data.mask = ~0ULL;
+
+	if (copy_to_user(data, &vc_data, sizeof(vc_data)))
+		return -EFAULT;
+	return 0;
+}
+
+int vc_set_umask(struct vx_info *vxi, void __user *data)
+{
+	struct vcmd_umask vc_data;
+
+	if (copy_from_user(&vc_data, data, sizeof(vc_data)))
+		return -EFAULT;
+
+	vxi->vx_umask = vs_mask_flags(vxi->vx_umask,
+		vc_data.umask, vc_data.mask);
+	return 0;
+}
+
+
 int vc_get_badness(struct vx_info *vxi, void __user *data)
 {
 	struct vcmd_badness_v0 vc_data;