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. Neither the name of the Company nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * This software is provided ``as is'', and any express or implied 23 * warranties, including, but not limited to, the implied warranties of 24 * merchantability and fitness for a particular purpose are disclaimed. 25 * In no event shall the company or contributors be liable for any 26 * direct, indirect, incidental, special, exemplary, or consequential 27 * damages (including, but not limited to, procurement of substitute 28 * goods or services; loss of use, data, or profits; or business 29 * interruption) however caused and on any theory of liability, whether 30 * in contract, strict liability, or tort (including negligence or 31 * otherwise) arising in any way out of the use of this software, even if 32 * advised of the possibility of such damage. 33 * 34 * $Id: vinumutil.c,v 1.14 1999/12/30 07:04:02 grog Exp grog $ 35 * $FreeBSD: src/sys/dev/vinum/vinumutil.c,v 1.15 2000/02/29 06:16:44 grog Exp $ 36 * $DragonFly: src/sbin/vinum/vinumutil.c,v 1.7 2007/01/20 19:20:39 dillon Exp $ 37 */ 38 39 /* This file contains utility routines used both in kernel and user context */ 40 41 #include <dev/raid/vinum/vinumhdr.h> 42 #include <dev/raid/vinum/statetexts.h> 43 #include <stdio.h> 44 #include <string.h> 45 extern jmp_buf command_fail; /* return on a failed command */ 46 47 static char numeric_state[32]; /* temporary buffer for ASCII conversions */ 48 #define STATECOUNT(x) (sizeof (x##statetext) / sizeof (char *)) 49 /* Return drive state as a string */ 50 char * 51 drive_state(enum drivestate state) 52 { 53 if (((unsigned) state) >= STATECOUNT(drive)) { 54 sprintf(numeric_state, "Invalid state %d", (int) state); 55 return numeric_state; 56 } else 57 return drivestatetext[state]; 58 } 59 60 /* Return volume state as a string */ 61 char * 62 volume_state(enum volumestate state) 63 { 64 if (((unsigned) state) >= STATECOUNT(vol)) { 65 sprintf(numeric_state, "Invalid state %d", (int) state); 66 return numeric_state; 67 } else 68 return volstatetext[state]; 69 } 70 71 /* Return plex state as a string */ 72 char * 73 plex_state(enum plexstate state) 74 { 75 if (((unsigned) state) >= STATECOUNT(plex)) { 76 sprintf(numeric_state, "Invalid state %d", (int) state); 77 return numeric_state; 78 } else 79 return plexstatetext[state]; 80 } 81 82 /* Return plex organization as a string */ 83 char * 84 plex_org(enum plexorg org) 85 { 86 switch (org) { 87 case plex_disorg: /* disorganized */ 88 return "disorg"; 89 break; 90 91 case plex_concat: /* concatenated plex */ 92 return "concat"; 93 break; 94 95 case plex_striped: /* striped plex */ 96 return "striped"; 97 break; 98 99 case plex_raid4: /* RAID-4 plex */ 100 return "raid4"; 101 102 case plex_raid5: /* RAID-5 plex */ 103 return "raid5"; 104 break; 105 106 default: 107 sprintf(numeric_state, "Invalid org %d", (int) org); 108 return numeric_state; 109 } 110 } 111 112 /* Return sd state as a string */ 113 char * 114 sd_state(enum sdstate state) 115 { 116 if (((unsigned) state) >= STATECOUNT(sd)) { 117 sprintf(numeric_state, "Invalid state %d", (int) state); 118 return numeric_state; 119 } else 120 return sdstatetext[state]; 121 } 122 123 /* Now convert in the other direction */ 124 /* 125 * These are currently used only internally, 126 * so we don't do too much error checking 127 */ 128 enum drivestate 129 DriveState(char *text) 130 { 131 int i; 132 for (i = 0; i < STATECOUNT(drive); i++) 133 if (strcmp(text, drivestatetext[i]) == 0) /* found it */ 134 return (enum drivestate) i; 135 return -1; 136 } 137 138 enum sdstate 139 SdState(char *text) 140 { 141 int i; 142 for (i = 0; i < STATECOUNT(sd); i++) 143 if (strcmp(text, sdstatetext[i]) == 0) /* found it */ 144 return (enum sdstate) i; 145 return -1; 146 } 147 148 enum plexstate 149 PlexState(char *text) 150 { 151 int i; 152 for (i = 0; i < STATECOUNT(plex); i++) 153 if (strcmp(text, plexstatetext[i]) == 0) /* found it */ 154 return (enum plexstate) i; 155 return -1; 156 } 157 158 enum volumestate 159 VolState(char *text) 160 { 161 int i; 162 for (i = 0; i < STATECOUNT(vol); i++) 163 if (strcmp(text, volstatetext[i]) == 0) /* found it */ 164 return (enum volumestate) i; 165 return -1; 166 } 167 168 /* 169 * Take a number with an optional scale factor and convert 170 * it to a number of bytes. 171 * 172 * The scale factors are: 173 * 174 * s sectors (of 512 bytes) 175 * b blocks (of 512 bytes). This unit is deprecated, 176 * because it's confusing, but maintained to avoid 177 * confusing Veritas users. 178 * k kilobytes (1024 bytes) 179 * m megabytes (of 1024 * 1024 bytes) 180 * g gigabytes (of 1024 * 1024 * 1024 bytes) 181 */ 182 u_int64_t 183 sizespec(char *spec) 184 { 185 u_int64_t size; 186 char *s; 187 int sign = 1; /* -1 if negative */ 188 189 size = 0; 190 if (spec != NULL) { /* we have a parameter */ 191 s = spec; 192 if (*s == '-') { /* negative, */ 193 sign = -1; 194 s++; /* skip */ 195 } 196 if ((*s >= '0') && (*s <= '9')) { /* it's numeric */ 197 while ((*s >= '0') && (*s <= '9')) /* it's numeric */ 198 size = size * 10 + *s++ - '0'; /* convert it */ 199 switch (*s) { 200 case '\0': 201 return size * sign; 202 203 case 'B': 204 case 'b': 205 case 'S': 206 case 's': 207 return size * sign * 512; 208 209 case 'K': 210 case 'k': 211 return size * sign * 1024; 212 213 case 'M': 214 case 'm': 215 return size * sign * 1024 * 1024; 216 217 case 'G': 218 case 'g': 219 return size * sign * 1024 * 1024 * 1024; 220 } 221 } 222 fprintf(stderr, "Invalid length specification: %s", spec); 223 longjmp(command_fail, -1); 224 } 225 fprintf(stderr, "Missing length specification"); 226 longjmp(command_fail, -1); 227 } 228 229 /* 230 * Extract the volume number from a device number. 231 * Perform no checking. 232 */ 233 int 234 Volno(dev_t dev) 235 { 236 return (minor(dev) & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT; 237 } 238 239 /* 240 * Extract a plex number from a device number. 241 * Don't check the major number, but check the 242 * type. Return -1 for invalid types. 243 */ 244 int 245 Plexno(dev_t dev) 246 { 247 switch (DEVTYPE(dev)) { 248 case VINUM_VOLUME_TYPE: 249 case VINUM_DRIVE_TYPE: 250 case VINUM_SUPERDEV_TYPE: /* ordinary super device */ 251 case VINUM_RAWSD_TYPE: 252 return -1; 253 254 case VINUM_PLEX_TYPE: 255 case VINUM_SD_TYPE: 256 return VOL[Volno(dev)].plex[(minor(dev) >> VINUM_PLEX_SHIFT) & (MASK(VINUM_PLEX_WIDTH))]; 257 258 case VINUM_RAWPLEX_TYPE: 259 return ((minor(dev) & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT) /* low order 8 bits */ 260 |((minor(dev) >> VINUM_RAWPLEX_SHIFT) 261 & (MASK(VINUM_RAWPLEX_WIDTH) 262 << (VINUM_VOL_SHIFT + VINUM_VOL_WIDTH))); /* upper 12 bits */ 263 } 264 return 0; /* compiler paranoia */ 265 } 266 267 /* 268 * Extract a subdisk number from a device number. 269 * Don't check the major number, but check the 270 * type. Return -1 for invalid types. 271 */ 272 int 273 Sdno(dev_t dev) 274 { 275 switch (DEVTYPE(dev)) { 276 case VINUM_VOLUME_TYPE: 277 case VINUM_DRIVE_TYPE: 278 case VINUM_SUPERDEV_TYPE: /* ordinary super device */ 279 case VINUM_PLEX_TYPE: 280 case VINUM_RAWPLEX_TYPE: 281 return -1; 282 283 case VINUM_SD_TYPE: 284 return PLEX[Plexno(dev)].sdnos[(minor(dev) >> VINUM_SD_SHIFT) & (MASK(VINUM_SD_WIDTH))]; 285 286 case VINUM_RAWSD_TYPE: 287 return ((minor(dev) & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT) /* low order 8 bits */ 288 |((minor(dev) >> VINUM_RAWPLEX_SHIFT) & (MASK(VINUM_RAWPLEX_WIDTH) 289 << (VINUM_VOL_SHIFT + VINUM_VOL_WIDTH))); /* upper 12 bits */ 290 } 291 return -1; /* compiler paranoia */ 292 } 293