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 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <devfsadm.h>
27 #include <strings.h>
28 #include <stdlib.h>
29 #include <limits.h>
30 #include <bsm/devalloc.h>
31
32 extern int system_labeled;
33
34 static int tape_process(di_minor_t minor, di_node_t node);
35
36 static devfsadm_create_t tape_cbt[] = {
37 { "tape", "ddi_byte:tape", NULL,
38 TYPE_EXACT, ILEVEL_0, tape_process
39 },
40 };
41
42 DEVFSADM_CREATE_INIT_V0(tape_cbt);
43
44 #define TAPE_LINK_RE "^rmt/[0-9]+[cbhlmnu]*"
45
46 static devfsadm_remove_t tape_remove_cbt[] = {
47 { "tape", TAPE_LINK_RE, RM_PRE, ILEVEL_0, devfsadm_rm_all
48 }
49 };
50
51 DEVFSADM_REMOVE_INIT_V0(tape_remove_cbt);
52
53
54 /*
55 * This function is called for every tape minor node.
56 * Calls enumerate to assign a logical tape id, and then
57 * devfsadm_mklink to make the link.
58 */
59 static int
tape_process(di_minor_t minor,di_node_t node)60 tape_process(di_minor_t minor, di_node_t node)
61 {
62 int flags = 0;
63 char l_path[PATH_MAX + 1];
64 char *buf;
65 char *mn;
66 char *devfspath;
67 devfsadm_enumerate_t rules[1] = {"rmt/([0-9]+)", 1, MATCH_ADDR};
68
69 mn = di_minor_name(minor);
70
71
72 if ((mn != NULL) && (*mn >= '0') && (*mn <= '9')) {
73 /*
74 * first character cannot be a digit as it would combine
75 * with the tape instance number to make an ambiguous quantity.
76 */
77 return (DEVFSADM_CONTINUE);
78 }
79
80 devfspath = di_devfs_path(node);
81
82 (void) strcpy(l_path, devfspath);
83 (void) strcat(l_path, ":");
84 (void) strcat(l_path, mn);
85
86 di_devfs_path_free(devfspath);
87
88 /*
89 * devfsadm_enumerate finds the logical tape id from the physical path,
90 * omitting minor name field. The logical tape id is returned in buf.
91 */
92 if (devfsadm_enumerate_int(l_path, 0, &buf, rules, 1)) {
93 return (DEVFSADM_CONTINUE);
94 }
95
96 (void) strcpy(l_path, "rmt/");
97 (void) strcat(l_path, buf);
98 (void) strcat(l_path, mn);
99 free(buf);
100
101 if (system_labeled)
102 flags = DA_ADD|DA_TAPE;
103
104 (void) devfsadm_mklink(l_path, node, minor, flags);
105
106 return (DEVFSADM_CONTINUE);
107 }
108