--- /sys/kern/kern_sig.c.orig	Mon May 19 16:41:42 2003
+++ /sys/kern/kern_sig.c	Sun Sep 21 21:01:44 2003
@@ -119,6 +119,10 @@
 SYSCTL_INT(_kern, OID_AUTO, coredump, CTLFLAG_RW,
 	&do_coredump, 0, "Enable/Disable coredumps");
 
+static int set_nodump_flag = 0;
+SYSCTL_INT(_kern, OID_AUTO, nodump_coredump, CTLFLAG_RW,
+	&set_nodump_flag, 0, "Enable/Disable setting of NODUMP flag on coredump files");
+
 /*
  * Signal properties and actions.
  * The array below categorizes the signals and their default actions
@@ -1656,6 +1660,8 @@
 	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
 	vattr.va_size = 0;
 	VOP_LEASE(vp, p, cred, LEASE_WRITE);
+	if (set_nodump_flag)
+		vattr.va_flags = UF_NODUMP;
 	VOP_SETATTR(vp, &vattr, cred, p);
 	p->p_acflag |= ACORE;
 	VOP_UNLOCK(vp, 0, p);