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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "devfsadm.h" 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <limits.h> 33 #include <string.h> 34 35 #define DCAM_RE_STRING_LEN 64 36 37 #define DCAM_STR_LINK_RE "^dcam([0-9]+)$" 38 #define DCAM_CTL_LINK_RE "^dcamctl([0-9]+)$" 39 40 static int dcam1394_process(di_minor_t minor, di_node_t node); 41 42 static devfsadm_create_t dcam1394_cbt[] = { 43 { 44 "firewire", 45 NULL, 46 "dcam", 47 DRV_RE, 48 ILEVEL_0, 49 dcam1394_process 50 } 51 }; 52 53 static char *debug_mid = "dcam1394_mid"; 54 55 DEVFSADM_CREATE_INIT_V0(dcam1394_cbt); 56 57 58 static devfsadm_remove_t dcam1394_remove_cbt[] = { 59 { 60 "firewire", 61 DCAM_STR_LINK_RE, 62 RM_PRE | RM_HOT | RM_ALWAYS, 63 ILEVEL_0, 64 devfsadm_rm_all 65 }, 66 { 67 "firewire", 68 DCAM_CTL_LINK_RE, 69 RM_PRE | RM_HOT | RM_ALWAYS, 70 ILEVEL_0, 71 devfsadm_rm_all 72 } 73 }; 74 75 DEVFSADM_REMOVE_INIT_V0(dcam1394_remove_cbt); 76 77 int 78 minor_init(void) 79 { 80 devfsadm_print(debug_mid, "dcam1394_link: minor_init\n"); 81 return (DEVFSADM_SUCCESS); 82 } 83 84 int 85 minor_fini(void) 86 { 87 devfsadm_print(debug_mid, "dcam1394_link: minor_fini\n"); 88 return (DEVFSADM_SUCCESS); 89 } 90 91 92 /* 93 * This function is called for every dcam1394 minor node. 94 * Calls enumerate to assign a logical dcam1394 id, and then 95 * devfsadm_mklink to make the link. 96 */ 97 static int 98 dcam1394_process(di_minor_t minor, di_node_t node) 99 { 100 char m_name[PATH_MAX], restring0[DCAM_RE_STRING_LEN]; 101 char l_path[PATH_MAX], p_path[PATH_MAX], *buf, *devfspath; 102 devfsadm_enumerate_t re[1]; 103 104 (void) strcpy(m_name, di_minor_name(minor)); 105 106 if (strcmp(di_driver_name(node), "dcam1394") != 0) { 107 return (DEVFSADM_CONTINUE); 108 } 109 110 if (strncmp(m_name, "dcamctl", 7) == 0) { 111 (void) snprintf(restring0, DCAM_RE_STRING_LEN, 112 DCAM_CTL_LINK_RE); 113 } else if (strncmp(m_name, "dcam", 4) == 0) { 114 (void) snprintf(restring0, DCAM_RE_STRING_LEN, 115 DCAM_STR_LINK_RE); 116 } else { 117 return (DEVFSADM_CONTINUE); 118 } 119 120 re[0].re = restring0; 121 re[0].subexp = 1; 122 re[0].flags = MATCH_ALL; 123 124 devfsadm_print(debug_mid, 125 "dcam1394_process: path %s\n", di_devfs_path(node)); 126 127 (void) strcpy(p_path, devfspath = di_devfs_path(node)); 128 (void) strcat(p_path, ":"); 129 (void) strcat(p_path, di_minor_name(minor)); 130 di_devfs_path_free(devfspath); 131 132 /* 133 * Build the physical path from the components, omitting 134 * minor name field. Find the logical dcam1394 id, and 135 * stuff it in buf. 136 */ 137 if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) { 138 devfsadm_print(debug_mid, 139 "dcam1394_process: exit/continue\n"); 140 return (DEVFSADM_CONTINUE); 141 } 142 143 devfsadm_print(debug_mid, "dcam1394_process: p_path=%s buf=%s\n", 144 p_path, buf); 145 146 if (strncmp(di_minor_name(minor), "dcamctl", 7) == 0) 147 (void) snprintf(l_path, PATH_MAX, "dcamctl%s", buf); 148 else 149 (void) snprintf(l_path, PATH_MAX, "dcam%s", buf); 150 151 (void) devfsadm_mklink(l_path, node, minor, 0); 152 153 free(buf); 154 155 return (DEVFSADM_CONTINUE); 156 } 157