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 (c) 2000-2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <regex.h> 30 #include <devfsadm.h> 31 #include <stdio.h> 32 #include <strings.h> 33 #include <stdlib.h> 34 #include <limits.h> 35 #include <sys/fssnap_if.h> 36 37 38 static int fssnap(di_minor_t minor, di_node_t node); 39 40 static devfsadm_create_t fssnap_cbt[] = { 41 { "pseudo", "ddi_pseudo", SNAP_NAME, 42 TYPE_EXACT | DRV_EXACT, ILEVEL_0, fssnap, 43 }, 44 }; 45 46 DEVFSADM_CREATE_INIT_V0(fssnap_cbt); 47 48 /* 49 * For the master device: 50 * /dev/fssnapctl -> /devices/pseudo/fssnap@0:ctl 51 * For each other device 52 * /dev/fssnap/1 -> /devices/pseudo/fssnap@0:1 53 * /dev/rfssnap/1 -> /devices/pseudo/fssnap@0:1,raw 54 */ 55 static int 56 fssnap(di_minor_t minor, di_node_t node) 57 { 58 dev_t dev; 59 char mn[MAXNAMELEN + 1]; 60 char blkname[MAXNAMELEN + 1]; 61 char rawname[MAXNAMELEN + 1]; 62 char path[PATH_MAX + 1]; 63 64 (void) strcpy(mn, di_minor_name(minor)); 65 66 if (strcmp(mn, "ctl") == 0) { 67 (void) devfsadm_mklink(SNAP_CTL_NAME, node, minor, 0); 68 } else { 69 dev = di_minor_devt(minor); 70 (void) snprintf(blkname, sizeof (blkname), "%d", 71 (int)minor(dev)); 72 (void) snprintf(rawname, sizeof (rawname), "%d,raw", 73 (int)minor(dev)); 74 75 if (strcmp(mn, blkname) == 0) { 76 (void) snprintf(path, sizeof (path), "%s/%s", 77 SNAP_BLOCK_NAME, blkname); 78 } else if (strcmp(mn, rawname) == 0) { 79 (void) snprintf(path, sizeof (path), "%s/%s", 80 SNAP_CHAR_NAME, blkname); 81 } else { 82 return (DEVFSADM_CONTINUE); 83 } 84 85 (void) devfsadm_mklink(path, node, minor, 0); 86 } 87 return (DEVFSADM_CONTINUE); 88 } 89