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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <devfsadm.h> 29 #include <strings.h> 30 #include <stdlib.h> 31 #include <limits.h> 32 #include <bsm/devalloc.h> 33 34 extern int system_labeled; 35 36 static int tape_process(di_minor_t minor, di_node_t node); 37 38 static devfsadm_create_t tape_cbt[] = { 39 { "tape", "ddi_byte:tape", NULL, 40 TYPE_EXACT, ILEVEL_0, tape_process 41 }, 42 }; 43 44 DEVFSADM_CREATE_INIT_V0(tape_cbt); 45 46 #define TAPE_LINK_RE "^rmt/[0-9]+[cbhlmnu]*" 47 48 static devfsadm_remove_t tape_remove_cbt[] = { 49 { "tape", TAPE_LINK_RE, RM_PRE, ILEVEL_0, devfsadm_rm_all 50 } 51 }; 52 53 DEVFSADM_REMOVE_INIT_V0(tape_remove_cbt); 54 55 56 /* 57 * This function is called for every tape minor node. 58 * Calls enumerate to assign a logical tape id, and then 59 * devfsadm_mklink to make the link. 60 */ 61 static int 62 tape_process(di_minor_t minor, di_node_t node) 63 { 64 int flags = 0; 65 char l_path[PATH_MAX + 1]; 66 char *buf; 67 char *mn; 68 char *devfspath; 69 devfsadm_enumerate_t rules[1] = {"rmt/([0-9]+)", 1, MATCH_ADDR}; 70 71 mn = di_minor_name(minor); 72 73 74 if ((mn != NULL) && (*mn >= '0') && (*mn <= '9')) { 75 /* 76 * first character cannot be a digit as it would combine 77 * with the tape instance number to make an ambiguous quantity. 78 */ 79 return (DEVFSADM_CONTINUE); 80 } 81 82 devfspath = di_devfs_path(node); 83 84 (void) strcpy(l_path, devfspath); 85 (void) strcat(l_path, ":"); 86 (void) strcat(l_path, mn); 87 88 di_devfs_path_free(devfspath); 89 90 /* 91 * devfsadm_enumerate finds the logical tape id from the physical path, 92 * omitting minor name field. The logical tape id is returned in buf. 93 */ 94 if (devfsadm_enumerate_int(l_path, 0, &buf, rules, 1)) { 95 return (DEVFSADM_CONTINUE); 96 } 97 98 (void) strcpy(l_path, "rmt/"); 99 (void) strcat(l_path, buf); 100 (void) strcat(l_path, mn); 101 free(buf); 102 103 if (system_labeled) 104 flags = DA_ADD|DA_TAPE; 105 106 (void) devfsadm_mklink(l_path, node, minor, flags); 107 108 return (DEVFSADM_CONTINUE); 109 } 110