usr/src/cmd/devfsadm/ieee1394_link.c

   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 2003 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 static int ieee1394_process(di_minor_t minor, di_node_t node);
  36
  37 static devfsadm_create_t ieee1394_cbt[] = {
  38         { "ieee1394", "ddi_ctl:devctl", "hci1394",
  39                 TYPE_EXACT | DRV_EXACT, ILEVEL_0, ieee1394_process
  40         },
  41 };
  42
  43 static char *debug_mid = "ieee1394_mid";
  44
  45 DEVFSADM_CREATE_INIT_V0(ieee1394_cbt);
  46
  47 #define IEEE1394_LINK_RE "^1394/hba[0-9]+$"
  48
  49 static devfsadm_remove_t ieee1394_remove_cbt[] = {
  50         { "ieee1394", IEEE1394_LINK_RE, RM_HOT | RM_POST,
  51                 ILEVEL_0, devfsadm_rm_all
  52         },
  53 };
  54
  55 DEVFSADM_REMOVE_INIT_V0(ieee1394_remove_cbt);
  56
  57 int
  58 minor_init(void)
  59 {
  60         devfsadm_print(debug_mid, "ieee1394_link: minor_init\n");
  61         return (DEVFSADM_SUCCESS);
  62 }
  63
  64 int
  65 minor_fini(void)
  66 {
  67         devfsadm_print(debug_mid, "ieee1394_link: minor_fini\n");
  68         return (DEVFSADM_SUCCESS);
  69 }
  70
  71 /*
  72  * This function is called for every ieee1394 minor node.
  73  * Calls enumerate to assign a logical ieee1394 id, and then
  74  * devfsadm_mklink to make the link.
  75  */
  76 static int
  77 ieee1394_process(di_minor_t minor, di_node_t node)
  78 {
  79         char *buf, *devfspath;
  80         char l_path[PATH_MAX], p_path[PATH_MAX];
  81         devfsadm_enumerate_t re[] = {"^1394/hba([0-9]+)$", 1, MATCH_ALL};
  82
  83         devfspath = di_devfs_path(node);
  84
  85         devfsadm_print(debug_mid,
  86                 "ieee1394_process: path %s\n", devfspath);
  87
  88         (void) snprintf(p_path, sizeof (p_path), "%s:%s",
  89                 devfspath, di_minor_name(minor));
  90         di_devfs_path_free(devfspath);
  91
  92         /*
  93          *  Build the physical path from the components. Find the logical
  94          *  ieee1394 HBA id, and stuff it in buf
  95          */
  96         if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) {
  97                 devfsadm_print(debug_mid, "ieee1394_process: exit/continue\n");
  98                 return (DEVFSADM_CONTINUE);
  99         }
 100         devfsadm_print(debug_mid, "ieee1394_process: p_path=%s buf=%s\n",
 101                                         p_path, buf);
 102
 103         (void) snprintf(l_path, sizeof (l_path), "1394/hba%s", buf);
 104
 105         free(buf);
 106
 107         devfsadm_print(debug_mid, "mklink %s %s\n", l_path, p_path);
 108
 109         (void) devfsadm_mklink(l_path, node, minor, 0);
 110
 111         return (DEVFSADM_CONTINUE);
 112 }