1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <regex.h>
27 #include <devfsadm.h>
28 #include <stdio.h>
29 #include <strings.h>
30 #include <stdlib.h>
31 #include <limits.h>
32 #include <sys/mkdev.h>
33 #include <sys/fs/zfs.h>
34
35 /* zfs name info */
36
37 static int zfs(di_minor_t minor, di_node_t node);
38
39 /*
40 * devfs create callback register
41 */
42 static devfsadm_create_t zfs_create_cbt[] = {
43 { "pseudo", "ddi_pseudo", ZFS_DRIVER,
44 TYPE_EXACT | DRV_EXACT, ILEVEL_0, zfs,
45 },
46 };
47 DEVFSADM_CREATE_INIT_V0(zfs_create_cbt);
48
49 /*
50 * The zfs control node looks like this:
51 * /dev/zfs -> /devices/pseudo/zfs@0:zfs
52 */
53 static int
zfs(di_minor_t minor,di_node_t node)54 zfs(di_minor_t minor, di_node_t node)
55 {
56 char mn[MAXNAMELEN + 1];
57
58 (void) strcpy(mn, di_minor_name(minor));
59
60 if (strcmp(mn, ZFS_DRIVER) == 0) {
61 (void) devfsadm_mklink(ZFS_DRIVER, node, minor, 0);
62 }
63 return (DEVFSADM_CONTINUE);
64 }
65