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