1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <regex.h> 30*0Sstevel@tonic-gate #include <devfsadm.h> 31*0Sstevel@tonic-gate #include <stdio.h> 32*0Sstevel@tonic-gate #include <strings.h> 33*0Sstevel@tonic-gate #include <stdlib.h> 34*0Sstevel@tonic-gate #include <limits.h> 35*0Sstevel@tonic-gate #include <sys/mkdev.h> 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #define MD_LINK_RE_DEVICES "^md/r?dsk/d[0-9]+$" 38*0Sstevel@tonic-gate #define MD_LINK_RE_SHARED "^md/shared/[0-9]+/r?dsk/d[0-9]+$" 39*0Sstevel@tonic-gate #define MD_LINK_RE_ADMIN "^md/admin" 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate /* 42*0Sstevel@tonic-gate * The devfsadm link module require the next section to 43*0Sstevel@tonic-gate * be defined in order to know what and when to call functions 44*0Sstevel@tonic-gate * in the module on device creation and removal. 45*0Sstevel@tonic-gate */ 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate /* setup for device creation */ 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate static int md_create(di_minor_t minor, di_node_t node); 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate static devfsadm_create_t md_cbt[] = { 52*0Sstevel@tonic-gate { "pseudo", "ddi_pseudo", "md", 53*0Sstevel@tonic-gate TYPE_EXACT | DRV_EXACT, ILEVEL_0, md_create, 54*0Sstevel@tonic-gate }, 55*0Sstevel@tonic-gate }; 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate DEVFSADM_CREATE_INIT_V0(md_cbt); 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate /* 60*0Sstevel@tonic-gate * remove devices - always allow disks to be dynamically removed. Only allow 61*0Sstevel@tonic-gate * admin device to be removed at reboot. 62*0Sstevel@tonic-gate */ 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate static devfsadm_remove_t md_remove_cbt[] = { 65*0Sstevel@tonic-gate {"pseudo", MD_LINK_RE_DEVICES, RM_ALWAYS | RM_PRE | RM_HOT, 66*0Sstevel@tonic-gate ILEVEL_0, devfsadm_rm_all}, 67*0Sstevel@tonic-gate {"pseudo", MD_LINK_RE_SHARED, RM_ALWAYS | RM_PRE | RM_HOT, 68*0Sstevel@tonic-gate ILEVEL_0, devfsadm_rm_all}, 69*0Sstevel@tonic-gate {"pseudo", MD_LINK_RE_ADMIN, RM_ALWAYS | RM_PRE, 70*0Sstevel@tonic-gate ILEVEL_0, devfsadm_rm_all}, 71*0Sstevel@tonic-gate }; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate DEVFSADM_REMOVE_INIT_V0(md_remove_cbt); 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate /* 77*0Sstevel@tonic-gate * For the admin device: 78*0Sstevel@tonic-gate * /dev/md/admin -> /devices/pseudo/md@0:admin 79*0Sstevel@tonic-gate * 80*0Sstevel@tonic-gate * For each other device 81*0Sstevel@tonic-gate * /dev/md/dsk/dN -> /devices/pseudo/md@0:0,N,blk 82*0Sstevel@tonic-gate * /dev/md/rdsk/dN -> /devices/pseudo/md@0:0,N,raw 83*0Sstevel@tonic-gate * /dev/md/shared/M/dsk/dN /devices/pseudo/md@0:M,N,blk 84*0Sstevel@tonic-gate * /dev/md/shared/M/rdsk/dN /devices/pseudo/md@0:M,N,raw 85*0Sstevel@tonic-gate */ 86*0Sstevel@tonic-gate static int 87*0Sstevel@tonic-gate md_create(di_minor_t minor, di_node_t node) 88*0Sstevel@tonic-gate { 89*0Sstevel@tonic-gate char mn[MAXNAMELEN + 1]; 90*0Sstevel@tonic-gate char path[PATH_MAX + 1]; 91*0Sstevel@tonic-gate int set = -1, mdev = -1, ret; 92*0Sstevel@tonic-gate char *type, *dir; 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate (void) strcpy(mn, di_minor_name(minor)); 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate /* 97*0Sstevel@tonic-gate * Check whether we are being requested to setup the admin 98*0Sstevel@tonic-gate * device link or one of the metadevice links. They need 99*0Sstevel@tonic-gate * to be treated differently. 100*0Sstevel@tonic-gate */ 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate if (strcmp(mn, "admin") == 0) { 103*0Sstevel@tonic-gate /* there is only one admin link and always in /dev/md/admin */ 104*0Sstevel@tonic-gate (void) devfsadm_mklink("md/admin", node, minor, 0); 105*0Sstevel@tonic-gate } else { 106*0Sstevel@tonic-gate /* 107*0Sstevel@tonic-gate * Extract out the minor components and create the 108*0Sstevel@tonic-gate * appropriate links. The node looks like: 109*0Sstevel@tonic-gate * md@<set>,<mdev>,<type> 110*0Sstevel@tonic-gate * where the <set> number is the named diskset, 111*0Sstevel@tonic-gate * <mdev> is the metadevice number, and <type> 112*0Sstevel@tonic-gate * is the trailing "blk" or "raw" indication. 113*0Sstevel@tonic-gate * 114*0Sstevel@tonic-gate * NOTE: when <set> is non-zero, we need to create 115*0Sstevel@tonic-gate * under the "shared" directory entry instead of linking 116*0Sstevel@tonic-gate * into the top level dsk/rdsk directories. 117*0Sstevel@tonic-gate */ 118*0Sstevel@tonic-gate ret = sscanf(mn, "%d,%d,", &set, &mdev); 119*0Sstevel@tonic-gate if (ret == 2 && (type = strrchr(mn, ',')) != NULL) { 120*0Sstevel@tonic-gate type ++; 121*0Sstevel@tonic-gate if (strcmp(type, "blk") == 0) { 122*0Sstevel@tonic-gate dir = "dsk"; 123*0Sstevel@tonic-gate } else { 124*0Sstevel@tonic-gate dir = "rdsk"; 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate if (set == 0) { 127*0Sstevel@tonic-gate /* this is a simple md */ 128*0Sstevel@tonic-gate (void) snprintf(path, sizeof (path), 129*0Sstevel@tonic-gate "md/%s/d%d", dir, mdev); 130*0Sstevel@tonic-gate } else { 131*0Sstevel@tonic-gate /* this is a shared md */ 132*0Sstevel@tonic-gate (void) snprintf(path, sizeof (path), 133*0Sstevel@tonic-gate "md/shared/%d/%s/d%d", 134*0Sstevel@tonic-gate set, dir, mdev); 135*0Sstevel@tonic-gate } 136*0Sstevel@tonic-gate (void) devfsadm_mklink(path, node, minor, 0); 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate return (DEVFSADM_CONTINUE); 140*0Sstevel@tonic-gate } 141