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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include "devfsadm.h"
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <limits.h>
31 #include <string.h>
32
33 #define DCAM_RE_STRING_LEN 64
34
35 #define DCAM_STR_LINK_RE "^dcam([0-9]+)$"
36 #define DCAM_CTL_LINK_RE "^dcamctl([0-9]+)$"
37
38 static int dcam1394_process(di_minor_t minor, di_node_t node);
39
40 static devfsadm_create_t dcam1394_cbt[] = {
41 {
42 "firewire",
43 NULL,
44 "dcam",
45 DRV_RE,
46 ILEVEL_0,
47 dcam1394_process
48 }
49 };
50
51 static char *debug_mid = "dcam1394_mid";
52
53 DEVFSADM_CREATE_INIT_V0(dcam1394_cbt);
54
55
56 static devfsadm_remove_t dcam1394_remove_cbt[] = {
57 {
58 "firewire",
59 DCAM_STR_LINK_RE,
60 RM_PRE | RM_HOT | RM_ALWAYS,
61 ILEVEL_0,
62 devfsadm_rm_all
63 },
64 {
65 "firewire",
66 DCAM_CTL_LINK_RE,
67 RM_PRE | RM_HOT | RM_ALWAYS,
68 ILEVEL_0,
69 devfsadm_rm_all
70 }
71 };
72
73 DEVFSADM_REMOVE_INIT_V0(dcam1394_remove_cbt);
74
75 int
minor_init(void)76 minor_init(void)
77 {
78 devfsadm_print(debug_mid, "dcam1394_link: minor_init\n");
79 return (DEVFSADM_SUCCESS);
80 }
81
82 int
minor_fini(void)83 minor_fini(void)
84 {
85 devfsadm_print(debug_mid, "dcam1394_link: minor_fini\n");
86 return (DEVFSADM_SUCCESS);
87 }
88
89
90 /*
91 * This function is called for every dcam1394 minor node.
92 * Calls enumerate to assign a logical dcam1394 id, and then
93 * devfsadm_mklink to make the link.
94 */
95 static int
dcam1394_process(di_minor_t minor,di_node_t node)96 dcam1394_process(di_minor_t minor, di_node_t node)
97 {
98 char m_name[PATH_MAX], restring0[DCAM_RE_STRING_LEN];
99 char l_path[PATH_MAX], p_path[PATH_MAX], *buf, *devfspath;
100 devfsadm_enumerate_t re[1];
101
102 (void) strcpy(m_name, di_minor_name(minor));
103
104 if (strcmp(di_driver_name(node), "dcam1394") != 0) {
105 return (DEVFSADM_CONTINUE);
106 }
107
108 if (strncmp(m_name, "dcamctl", 7) == 0) {
109 (void) snprintf(restring0, DCAM_RE_STRING_LEN,
110 DCAM_CTL_LINK_RE);
111 } else if (strncmp(m_name, "dcam", 4) == 0) {
112 (void) snprintf(restring0, DCAM_RE_STRING_LEN,
113 DCAM_STR_LINK_RE);
114 } else {
115 return (DEVFSADM_CONTINUE);
116 }
117
118 re[0].re = restring0;
119 re[0].subexp = 1;
120 re[0].flags = MATCH_ALL;
121
122 devfsadm_print(debug_mid,
123 "dcam1394_process: path %s\n", di_devfs_path(node));
124
125 (void) strcpy(p_path, devfspath = di_devfs_path(node));
126 (void) strcat(p_path, ":");
127 (void) strcat(p_path, di_minor_name(minor));
128 di_devfs_path_free(devfspath);
129
130 /*
131 * Build the physical path from the components, omitting
132 * minor name field. Find the logical dcam1394 id, and
133 * stuff it in buf.
134 */
135 if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) {
136 devfsadm_print(debug_mid,
137 "dcam1394_process: exit/continue\n");
138 return (DEVFSADM_CONTINUE);
139 }
140
141 devfsadm_print(debug_mid, "dcam1394_process: p_path=%s buf=%s\n",
142 p_path, buf);
143
144 if (strncmp(di_minor_name(minor), "dcamctl", 7) == 0)
145 (void) snprintf(l_path, PATH_MAX, "dcamctl%s", buf);
146 else
147 (void) snprintf(l_path, PATH_MAX, "dcam%s", buf);
148
149 (void) devfsadm_mklink(l_path, node, minor, 0);
150
151 free(buf);
152
153 return (DEVFSADM_CONTINUE);
154 }
155