HVM-503 SmartOS kvm driver should create /dev entry for /dev/kvm

1 files changed, 59 insertions, 0 deletions

diff --git a/kvm_link.c b/kvm_link.c
new file mode 100644
index 0000000..ef2ab7a
--- /dev/null
+++ b/kvm_link.c
@@ -0,0 +1,59 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2011 Joyent Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include <devfsadm.h>
+#include <strings.h>
+#include <stdio.h>
+#include <sys/dtrace.h>
+
+static int devfs_kvm_ln(di_minor_t minor, di_node_t node);
+
+/*
+ * The amount of documentation for this format is unsurprisingly limited. There
+ * is probably a better match that we could do. This is modeled off of the
+ * misc_link_i386.c things that we are matching. Like xsvc and its ilk we look
+ * for most ddi_psuedo devices and look for node names that are kvm.
+ */
+static devfsadm_create_t devfs_kvm_create_cbt[] = {
+	{ "pseudo", "ddi_pseudo", NULL, TYPE_EXACT, ILEVEL_0, devfs_kvm_ln }
+};
+
+DEVFSADM_CREATE_INIT_V0(devfs_kvm_create_cbt);
+
+static int
+devfs_kvm_ln(di_minor_t minor, di_node_t node)
+{
+	char *mn;
+
+	if (strcmp(di_node_name(node), "kvm") != 0)
+		return (DEVFSADM_CONTINUE);
+
+	mn = di_minor_name(minor);
+	if (mn == NULL)
+		return (DEVFSADM_CONTINUE);
+
+	(void) devfsadm_mklink(mn, node, minor, 0);
+	return (DEVFSADM_CONTINUE);
+}