1 /*- 2 * Copyright (c) 1997, 1998, 1999 3 * Nan Yang Computer Services Limited. All rights reserved. 4 * 5 * Written by Greg Lehey 6 * 7 * This software is distributed under the so-called ``Berkeley 8 * License'': 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Nan Yang Computer 21 * Services Limited. 22 * 4. Neither the name of the Company nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * This software is provided ``as is'', and any express or implied 27 * warranties, including, but not limited to, the implied warranties of 28 * merchantability and fitness for a particular purpose are disclaimed. 29 * In no event shall the company or contributors be liable for any 30 * direct, indirect, incidental, special, exemplary, or consequential 31 * damages (including, but not limited to, procurement of substitute 32 * goods or services; loss of use, data, or profits; or business 33 * interruption) however caused and on any theory of liability, whether 34 * in contract, strict liability, or tort (including negligence or 35 * otherwise) arising in any way out of the use of this software, even if 36 * advised of the possibility of such damage. 37 * 38 * $Id: vinumutil.c,v 1.14 1999/12/30 07:04:02 grog Exp grog $ 39 * $FreeBSD: src/sys/dev/vinum/vinumutil.c,v 1.15 2000/02/29 06:16:44 grog Exp $ 40 * $DragonFly: src/sbin/vinum/vinumutil.c,v 1.6 2005/02/03 22:05:27 joerg Exp $ 41 */ 42 43 /* This file contains utility routines used both in kernel and user context */ 44 45 #include <dev/raid/vinum/vinumhdr.h> 46 #include <dev/raid/vinum/statetexts.h> 47 #include <stdio.h> 48 #include <string.h> 49 extern jmp_buf command_fail; /* return on a failed command */ 50 51 static char numeric_state[32]; /* temporary buffer for ASCII conversions */ 52 #define STATECOUNT(x) (sizeof (x##statetext) / sizeof (char *)) 53 /* Return drive state as a string */ 54 char * 55 drive_state(enum drivestate state) 56 { 57 if (((unsigned) state) >= STATECOUNT(drive)) { 58 sprintf(numeric_state, "Invalid state %d", (int) state); 59 return numeric_state; 60 } else 61 return drivestatetext[state]; 62 } 63 64 /* Return volume state as a string */ 65 char * 66 volume_state(enum volumestate state) 67 { 68 if (((unsigned) state) >= STATECOUNT(vol)) { 69 sprintf(numeric_state, "Invalid state %d", (int) state); 70 return numeric_state; 71 } else 72 return volstatetext[state]; 73 } 74 75 /* Return plex state as a string */ 76 char * 77 plex_state(enum plexstate state) 78 { 79 if (((unsigned) state) >= STATECOUNT(plex)) { 80 sprintf(numeric_state, "Invalid state %d", (int) state); 81 return numeric_state; 82 } else 83 return plexstatetext[state]; 84 } 85 86 /* Return plex organization as a string */ 87 char * 88 plex_org(enum plexorg org) 89 { 90 switch (org) { 91 case plex_disorg: /* disorganized */ 92 return "disorg"; 93 break; 94 95 case plex_concat: /* concatenated plex */ 96 return "concat"; 97 break; 98 99 case plex_striped: /* striped plex */ 100 return "striped"; 101 break; 102 103 case plex_raid4: /* RAID-4 plex */ 104 return "raid4"; 105 106 case plex_raid5: /* RAID-5 plex */ 107 return "raid5"; 108 break; 109 110 default: 111 sprintf(numeric_state, "Invalid org %d", (int) org); 112 return numeric_state; 113 } 114 } 115 116 /* Return sd state as a string */ 117 char * 118 sd_state(enum sdstate state) 119 { 120 if (((unsigned) state) >= STATECOUNT(sd)) { 121 sprintf(numeric_state, "Invalid state %d", (int) state); 122 return numeric_state; 123 } else 124 return sdstatetext[state]; 125 } 126 127 /* Now convert in the other direction */ 128 /* 129 * These are currently used only internally, 130 * so we don't do too much error checking 131 */ 132 enum drivestate 133 DriveState(char *text) 134 { 135 int i; 136 for (i = 0; i < STATECOUNT(drive); i++) 137 if (strcmp(text, drivestatetext[i]) == 0) /* found it */ 138 return (enum drivestate) i; 139 return -1; 140 } 141 142 enum sdstate 143 SdState(char *text) 144 { 145 int i; 146 for (i = 0; i < STATECOUNT(sd); i++) 147 if (strcmp(text, sdstatetext[i]) == 0) /* found it */ 148 return (enum sdstate) i; 149 return -1; 150 } 151 152 enum plexstate 153 PlexState(char *text) 154 { 155 int i; 156 for (i = 0; i < STATECOUNT(plex); i++) 157 if (strcmp(text, plexstatetext[i]) == 0) /* found it */ 158 return (enum plexstate) i; 159 return -1; 160 } 161 162 enum volumestate 163 VolState(char *text) 164 { 165 int i; 166 for (i = 0; i < STATECOUNT(vol); i++) 167 if (strcmp(text, volstatetext[i]) == 0) /* found it */ 168 return (enum volumestate) i; 169 return -1; 170 } 171 172 /* 173 * Take a number with an optional scale factor and convert 174 * it to a number of bytes. 175 * 176 * The scale factors are: 177 * 178 * s sectors (of 512 bytes) 179 * b blocks (of 512 bytes). This unit is deprecated, 180 * because it's confusing, but maintained to avoid 181 * confusing Veritas users. 182 * k kilobytes (1024 bytes) 183 * m megabytes (of 1024 * 1024 bytes) 184 * g gigabytes (of 1024 * 1024 * 1024 bytes) 185 */ 186 u_int64_t 187 sizespec(char *spec) 188 { 189 u_int64_t size; 190 char *s; 191 int sign = 1; /* -1 if negative */ 192 193 size = 0; 194 if (spec != NULL) { /* we have a parameter */ 195 s = spec; 196 if (*s == '-') { /* negative, */ 197 sign = -1; 198 s++; /* skip */ 199 } 200 if ((*s >= '0') && (*s <= '9')) { /* it's numeric */ 201 while ((*s >= '0') && (*s <= '9')) /* it's numeric */ 202 size = size * 10 + *s++ - '0'; /* convert it */ 203 switch (*s) { 204 case '\0': 205 return size * sign; 206 207 case 'B': 208 case 'b': 209 case 'S': 210 case 's': 211 return size * sign * 512; 212 213 case 'K': 214 case 'k': 215 return size * sign * 1024; 216 217 case 'M': 218 case 'm': 219 return size * sign * 1024 * 1024; 220 221 case 'G': 222 case 'g': 223 return size * sign * 1024 * 1024 * 1024; 224 } 225 } 226 fprintf(stderr, "Invalid length specification: %s", spec); 227 longjmp(command_fail, -1); 228 } 229 fprintf(stderr, "Missing length specification"); 230 longjmp(command_fail, -1); 231 } 232 233 /* 234 * Extract the volume number from a device number. 235 * Perform no checking. 236 */ 237 int 238 Volno(dev_t dev) 239 { 240 return (minor(dev) & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT; 241 } 242 243 /* 244 * Extract a plex number from a device number. 245 * Don't check the major number, but check the 246 * type. Return -1 for invalid types. 247 */ 248 int 249 Plexno(dev_t dev) 250 { 251 switch (DEVTYPE(dev)) { 252 case VINUM_VOLUME_TYPE: 253 case VINUM_DRIVE_TYPE: 254 case VINUM_SUPERDEV_TYPE: /* ordinary super device */ 255 case VINUM_RAWSD_TYPE: 256 return -1; 257 258 case VINUM_PLEX_TYPE: 259 case VINUM_SD_TYPE: 260 return VOL[Volno(dev)].plex[(minor(dev) >> VINUM_PLEX_SHIFT) & (MASK(VINUM_PLEX_WIDTH))]; 261 262 case VINUM_RAWPLEX_TYPE: 263 return ((minor(dev) & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT) /* low order 8 bits */ 264 |((minor(dev) >> VINUM_RAWPLEX_SHIFT) 265 & (MASK(VINUM_RAWPLEX_WIDTH) 266 << (VINUM_VOL_SHIFT + VINUM_VOL_WIDTH))); /* upper 12 bits */ 267 } 268 return 0; /* compiler paranoia */ 269 } 270 271 /* 272 * Extract a subdisk number from a device number. 273 * Don't check the major number, but check the 274 * type. Return -1 for invalid types. 275 */ 276 int 277 Sdno(dev_t dev) 278 { 279 switch (DEVTYPE(dev)) { 280 case VINUM_VOLUME_TYPE: 281 case VINUM_DRIVE_TYPE: 282 case VINUM_SUPERDEV_TYPE: /* ordinary super device */ 283 case VINUM_PLEX_TYPE: 284 case VINUM_RAWPLEX_TYPE: 285 return -1; 286 287 case VINUM_SD_TYPE: 288 return PLEX[Plexno(dev)].sdnos[(minor(dev) >> VINUM_SD_SHIFT) & (MASK(VINUM_SD_WIDTH))]; 289 290 case VINUM_RAWSD_TYPE: 291 return ((minor(dev) & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT) /* low order 8 bits */ 292 |((minor(dev) >> VINUM_RAWPLEX_SHIFT) & (MASK(VINUM_RAWPLEX_WIDTH) 293 << (VINUM_VOL_SHIFT + VINUM_VOL_WIDTH))); /* upper 12 bits */ 294 } 295 return -1; /* compiler paranoia */ 296 } 297