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 <stdio.h> 30 #include <stdlib.h> 31 #include <errno.h> 32 #include <string.h> 33 #include <meta.h> 34 #include <sys/types.h> 35 #include <sys/mkdev.h> 36 #include <sys/stat.h> 37 #include <limits.h> 38 #include <svm.h> 39 40 /* 41 * FUNCTION: valid_bootlist 42 * 43 * INPUT: file pointer, line buffer, line_length 44 * 45 * RETURN VALUES: 46 * 0 - SUCCESS 47 * -1 - FAIL 48 * 49 */ 50 51 int 52 valid_bootlist(FILE *fp, int line_len) 53 { 54 char *bp = NULL; 55 char *line; 56 57 /* 58 * errno may not be cleared by callee routines and we 59 * we want to catch fgets failures hence errno is reset. 60 */ 61 errno = 0; 62 if ((line = malloc(line_len)) == NULL) 63 return (RET_ERROR); 64 65 while (fgets(line, line_len, fp) != NULL) { 66 bp = strstr(line, "mddb_bootlist"); 67 if (bp != NULL) { 68 /* if not commented out then breakout */ 69 if (*line != '*' && *line != '#') { 70 break; 71 } 72 } 73 } 74 75 free(line); 76 if (bp == NULL || errno != 0) 77 return (RET_ERROR); 78 79 return (RET_SUCCESS); 80 } 81 82 /* 83 * FUNCTION: svm_check 84 * Check the existance of DiskSuite or SVM 85 * 86 * INPUT: rootpath 87 * 88 * RETURN VALUES: 89 * 0 - SUCCESS 90 * -1 - FAIL 91 */ 92 93 int 94 svm_check(char *path) 95 { 96 FILE *fp; 97 char tmppath[PATH_MAX]; 98 int rval; 99 100 (void) strcat(strcpy(tmppath, path), MD_CONF); 101 102 if ((fp = fopen(tmppath, "r")) == NULL) { 103 rval = errno; 104 goto free_exit; 105 } 106 107 rval = valid_bootlist(fp, MDDB_BOOTLIST_MAX_LEN); 108 109 debug_printf("svm_check(): valid bootlist in %s. status %d\n", 110 tmppath, rval); 111 112 if (rval == RET_SUCCESS) { 113 goto free_exit; 114 } 115 (void) fclose(fp); 116 117 /* not found in md.conf try etc/system */ 118 (void) strcat(strcpy(tmppath, path), SYSTEM_FILE); 119 120 if ((fp = fopen(tmppath, "r")) == NULL) { 121 rval = errno; 122 goto free_exit; 123 } 124 125 rval = valid_bootlist(fp, MDDB_BOOTLIST_MAX_LEN); 126 127 debug_printf("svm_check(): valid bootlist in %s. status %d\n", 128 tmppath, rval); 129 free_exit: 130 (void) fclose(fp); 131 if (rval > 0) 132 rval = RET_ERROR; 133 return (rval); 134 } 135 136 /* 137 * FUNCTION: svm_is_md 138 * Check if the the given device name has an md driver. 139 * INPUT: special device name (/dev/dsk/c0t0d0s0 or /dev/md/dsk/d10) 140 * 141 * RETURN: 142 * 1 - if it is a metadevice. 143 * 0 - if it is not a metadevice. 144 */ 145 146 int 147 svm_is_md(char *device_name) 148 { 149 char buf[30]; 150 struct stat sbuf; 151 int rval = 0; 152 153 (void) memset(buf, 0, 30); 154 155 debug_printf("svm_is_md(): device %s\n", device_name); 156 if (stat(device_name, &sbuf) != 0) 157 return (RET_ERROR); 158 159 if (get_drv_name(major(sbuf.st_rdev), "/", buf) == RET_ERROR) { 160 debug_printf("svm_is_md(): device get_drv_name failed: %s\n", 161 device_name); 162 return (0); 163 } 164 if (strcmp(buf, MD_MODULE) == 0) { 165 debug_printf("svm_is_md(): device %s succeed\n", device_name); 166 rval = 1; 167 } 168 return (rval); 169 } 170