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1.1 ! root 1: /* ! 2: * Copyright (c) 1983, 1988 Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * Redistribution and use in source and binary forms are permitted ! 6: * provided that the above copyright notice and this paragraph are ! 7: * duplicated in all such forms and that any documentation, ! 8: * advertising materials, and other materials related to such ! 9: * distribution and use acknowledge that the software was developed ! 10: * by the University of California, Berkeley. The name of the ! 11: * University may not be used to endorse or promote products derived ! 12: * from this software without specific prior written permission. ! 13: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR ! 14: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED ! 15: * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 16: */ ! 17: ! 18: #ifndef lint ! 19: char copyright[] = ! 20: "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\ ! 21: All rights reserved.\n"; ! 22: #endif /* not lint */ ! 23: ! 24: #ifndef lint ! 25: static char sccsid[] = "@(#)diskpart.c 5.10 (Berkeley) 7/12/88"; ! 26: #endif /* not lint */ ! 27: ! 28: /* ! 29: * Program to calculate standard disk partition sizes. ! 30: */ ! 31: #include <sys/param.h> ! 32: #define DKTYPENAMES ! 33: #include <sys/disklabel.h> ! 34: ! 35: #include <stdio.h> ! 36: #include <ctype.h> ! 37: ! 38: #define for_now /* show all of `c' partition for disklabel */ ! 39: #define NPARTITIONS 8 ! 40: #define PART(x) (x - 'a') ! 41: ! 42: /* ! 43: * Default partition sizes, where they exist. ! 44: */ ! 45: #define NDEFAULTS 4 ! 46: int defpart[NDEFAULTS][NPARTITIONS] = { ! 47: { 15884, 66880, 0, 15884, 307200, 0, 0, 291346 }, /* ~ 356+ Mbytes */ ! 48: { 15884, 33440, 0, 15884, 55936, 0, 0, 291346 }, /* ~ 206-355 Mbytes */ ! 49: { 15884, 33440, 0, 15884, 55936, 0, 0, 0 }, /* ~ 61-205 Mbytes */ ! 50: { 15884, 10032, 0, 15884, 0, 0, 0, 0 }, /* ~ 20-60 Mbytes */ ! 51: }; ! 52: ! 53: /* ! 54: * Each array defines a layout for a disk; ! 55: * that is, the collection of partitions totally ! 56: * covers the physical space on a disk. ! 57: */ ! 58: #define NLAYOUTS 3 ! 59: char layouts[NLAYOUTS][NPARTITIONS] = { ! 60: { 'a', 'b', 'h', 'g' }, ! 61: { 'a', 'b', 'h', 'd', 'e', 'f' }, ! 62: { 'c' }, ! 63: }; ! 64: ! 65: /* ! 66: * Default disk block and disk block fragment ! 67: * sizes for each file system. Those file systems ! 68: * with zero block and frag sizes are special cases ! 69: * (e.g. swap areas or for access to the entire device). ! 70: */ ! 71: struct partition defparam[NPARTITIONS] = { ! 72: { 0, 0, 1024, FS_UNUSED, 8, 0 }, /* a */ ! 73: { 0, 0, 1024, FS_SWAP, 8, 0 }, /* b */ ! 74: { 0, 0, 1024, FS_UNUSED, 8, 0 }, /* c */ ! 75: { 0, 0, 512, FS_UNUSED, 8, 0 }, /* d */ ! 76: { 0, 0, 1024, FS_UNUSED, 8, 0 }, /* e */ ! 77: { 0, 0, 1024, FS_UNUSED, 8, 0 }, /* f */ ! 78: { 0, 0, 1024, FS_UNUSED, 8, 0 }, /* g */ ! 79: { 0, 0, 1024, FS_UNUSED, 8, 0 } /* h */ ! 80: }; ! 81: ! 82: /* ! 83: * Each disk has some space reserved for a bad sector ! 84: * forwarding table. DEC standard 144 uses the first ! 85: * 5 even numbered sectors in the last track of the ! 86: * last cylinder for replicated storage of the bad sector ! 87: * table; another 126 sectors past this is needed as a ! 88: * pool of replacement sectors. ! 89: */ ! 90: int badsecttable = 126; /* # sectors */ ! 91: ! 92: int pflag; /* print device driver partition tables */ ! 93: int dflag; /* print disktab entry */ ! 94: ! 95: struct disklabel *promptfordisk(); ! 96: ! 97: main(argc, argv) ! 98: int argc; ! 99: char *argv[]; ! 100: { ! 101: struct disklabel *dp; ! 102: register int curcyl, spc, def, part, layout, j; ! 103: int threshhold, numcyls[NPARTITIONS], startcyl[NPARTITIONS]; ! 104: int totsize = 0; ! 105: char *lp, *tyname; ! 106: ! 107: argc--, argv++; ! 108: if (argc < 1) { ! 109: fprintf(stderr, ! 110: "usage: disktab [ -p ] [ -d ] [ -s size ] disk-type\n"); ! 111: exit(1); ! 112: } ! 113: if (argc > 0 && strcmp(*argv, "-p") == 0) { ! 114: pflag++; ! 115: argc--, argv++; ! 116: } ! 117: if (argc > 0 && strcmp(*argv, "-d") == 0) { ! 118: dflag++; ! 119: argc--, argv++; ! 120: } ! 121: if (argc > 1 && strcmp(*argv, "-s") == 0) { ! 122: totsize = atoi(argv[1]); ! 123: argc += 2, argv += 2; ! 124: } ! 125: dp = getdiskbyname(*argv); ! 126: if (dp == NULL) { ! 127: if (isatty(0)) ! 128: dp = promptfordisk(*argv); ! 129: if (dp == NULL) { ! 130: fprintf(stderr, "%s: unknown disk type\n", *argv); ! 131: exit(2); ! 132: } ! 133: } else { ! 134: if (dp->d_flags & D_REMOVABLE) ! 135: tyname = "removable"; ! 136: else if (dp->d_flags & D_RAMDISK) ! 137: tyname = "simulated"; ! 138: else ! 139: tyname = "winchester"; ! 140: } ! 141: spc = dp->d_secpercyl; ! 142: /* ! 143: * Bad sector table contains one track for the replicated ! 144: * copies of the table and enough full tracks preceding ! 145: * the last track to hold the pool of free blocks to which ! 146: * bad sectors are mapped. ! 147: * If disk size was specified explicitly, use specified size. ! 148: */ ! 149: if (dp->d_type == DTYPE_SMD && dp->d_flags & D_BADSECT && ! 150: totsize == 0) { ! 151: badsecttable = dp->d_nsectors + ! 152: roundup(badsecttable, dp->d_nsectors); ! 153: threshhold = howmany(spc, badsecttable); ! 154: } else { ! 155: badsecttable = 0; ! 156: threshhold = 0; ! 157: } ! 158: /* ! 159: * If disk size was specified, recompute number of cylinders ! 160: * that may be used, and set badsecttable to any remaining ! 161: * fraction of the last cylinder. ! 162: */ ! 163: if (totsize != 0) { ! 164: dp->d_ncylinders = howmany(totsize, spc); ! 165: badsecttable = spc * dp->d_ncylinders - totsize; ! 166: } ! 167: ! 168: /* ! 169: * Figure out if disk is large enough for ! 170: * expanded swap area and 'd', 'e', and 'f' ! 171: * partitions. Otherwise, use smaller defaults ! 172: * based on RK07. ! 173: */ ! 174: for (def = 0; def < NDEFAULTS; def++) { ! 175: curcyl = 0; ! 176: for (part = PART('a'); part < NPARTITIONS; part++) ! 177: curcyl += howmany(defpart[def][part], spc); ! 178: if (curcyl < dp->d_ncylinders - threshhold) ! 179: break; ! 180: } ! 181: if (def >= NDEFAULTS) { ! 182: fprintf(stderr, "%s: disk too small, calculate by hand\n", ! 183: *argv); ! 184: exit(3); ! 185: } ! 186: ! 187: /* ! 188: * Calculate number of cylinders allocated to each disk ! 189: * partition. We may waste a bit of space here, but it's ! 190: * in the interest of (very backward) compatibility ! 191: * (for mixed disk systems). ! 192: */ ! 193: for (curcyl = 0, part = PART('a'); part < NPARTITIONS; part++) { ! 194: numcyls[part] = 0; ! 195: if (defpart[def][part] != 0) { ! 196: numcyls[part] = howmany(defpart[def][part], spc); ! 197: curcyl += numcyls[part]; ! 198: } ! 199: } ! 200: numcyls[PART('f')] = dp->d_ncylinders - curcyl; ! 201: numcyls[PART('g')] = ! 202: numcyls[PART('d')] + numcyls[PART('e')] + numcyls[PART('f')]; ! 203: numcyls[PART('c')] = dp->d_ncylinders; ! 204: defpart[def][PART('f')] = numcyls[PART('f')] * spc - badsecttable; ! 205: defpart[def][PART('g')] = numcyls[PART('g')] * spc - badsecttable; ! 206: defpart[def][PART('c')] = numcyls[PART('c')] * spc; ! 207: #ifndef for_now ! 208: if (totsize || !pflag) ! 209: #else ! 210: if (totsize) ! 211: #endif ! 212: defpart[def][PART('c')] -= badsecttable; ! 213: ! 214: /* ! 215: * Calculate starting cylinder number for each partition. ! 216: * Note the 'h' partition is physically located before the ! 217: * 'g' or 'd' partition. This is reflected in the layout ! 218: * arrays defined above. ! 219: */ ! 220: for (layout = 0; layout < NLAYOUTS; layout++) { ! 221: curcyl = 0; ! 222: for (lp = layouts[layout]; *lp != 0; lp++) { ! 223: startcyl[PART(*lp)] = curcyl; ! 224: curcyl += numcyls[PART(*lp)]; ! 225: } ! 226: } ! 227: ! 228: if (pflag) { ! 229: printf("}, %s_sizes[%d] = {\n", dp->d_typename, NPARTITIONS); ! 230: for (part = PART('a'); part < NPARTITIONS; part++) { ! 231: if (numcyls[part] == 0) { ! 232: printf("\t0,\t0,\n"); ! 233: continue; ! 234: } ! 235: if (dp->d_type != DTYPE_MSCP) { ! 236: printf("\t%d,\t%d,\t\t/* %c=cyl %d thru %d */\n", ! 237: defpart[def][part], startcyl[part], ! 238: 'A' + part, startcyl[part], ! 239: startcyl[part] + numcyls[part] - 1); ! 240: continue; ! 241: } ! 242: printf("\t%d,\t%d,\t\t/* %c=sectors %d thru %d */\n", ! 243: defpart[def][part], spc * startcyl[part], ! 244: 'A' + part, spc * startcyl[part], ! 245: spc * startcyl[part] + defpart[def][part] - 1); ! 246: } ! 247: exit(0); ! 248: } ! 249: if (dflag) { ! 250: int nparts; ! 251: ! 252: /* ! 253: * In case the disk is in the ``in-between'' range ! 254: * where the 'g' partition is smaller than the 'h' ! 255: * partition, reverse the frag sizes so the /usr partition ! 256: * is always set up with a frag size larger than the ! 257: * user's partition. ! 258: */ ! 259: if (defpart[def][PART('g')] < defpart[def][PART('h')]) { ! 260: int temp; ! 261: ! 262: temp = defparam[PART('h')].p_fsize; ! 263: defparam[PART('h')].p_fsize = ! 264: defparam[PART('g')].p_fsize; ! 265: defparam[PART('g')].p_fsize = temp; ! 266: } ! 267: printf("%s:\\\n", dp->d_typename); ! 268: printf("\t:ty=%s:ns#%d:nt#%d:nc#%d:", tyname, ! 269: dp->d_nsectors, dp->d_ntracks, dp->d_ncylinders); ! 270: if (dp->d_secpercyl != dp->d_nsectors * dp->d_ntracks) ! 271: printf("sc#%d:", dp->d_secpercyl); ! 272: if (dp->d_type == DTYPE_SMD && dp->d_flags & D_BADSECT) ! 273: printf("sf:"); ! 274: printf("\\\n\t:dt=%s:", dktypenames[dp->d_type]); ! 275: for (part = NDDATA - 1; part >= 0; part--) ! 276: if (dp->d_drivedata[part]) ! 277: break; ! 278: for (j = 0; j <= part; j++) ! 279: printf("d%d#%d:", j, dp->d_drivedata[j]); ! 280: printf("\\\n"); ! 281: for (nparts = 0, part = PART('a'); part < NPARTITIONS; part++) ! 282: if (defpart[def][part] != 0) ! 283: nparts++; ! 284: for (part = PART('a'); part < NPARTITIONS; part++) { ! 285: if (defpart[def][part] == 0) ! 286: continue; ! 287: printf("\t:p%c#%d:", 'a' + part, defpart[def][part]); ! 288: printf("o%c#%d:b%c#%d:f%c#%d:", ! 289: 'a' + part, spc * startcyl[part], ! 290: 'a' + part, ! 291: defparam[part].p_frag * defparam[part].p_fsize, ! 292: 'a' + part, defparam[part].p_fsize); ! 293: if (defparam[part].p_fstype == FS_SWAP) ! 294: printf("t%c=swap:", 'a' + part); ! 295: nparts--; ! 296: printf("%s\n", nparts > 0 ? "\\" : ""); ! 297: } ! 298: #ifdef for_now ! 299: defpart[def][PART('c')] -= badsecttable; ! 300: part = PART('c'); ! 301: printf("#\t:p%c#%d:", 'a' + part, defpart[def][part]); ! 302: printf("o%c#%d:b%c#%d:f%c#%d:\n", ! 303: 'a' + part, spc * startcyl[part], ! 304: 'a' + part, ! 305: defparam[part].p_frag * defparam[part].p_fsize, ! 306: 'a' + part, defparam[part].p_fsize); ! 307: #endif ! 308: exit(0); ! 309: } ! 310: printf("%s: #sectors/track=%d, #tracks/cylinder=%d #cylinders=%d\n", ! 311: dp->d_typename, dp->d_nsectors, dp->d_ntracks, ! 312: dp->d_ncylinders); ! 313: printf("\n Partition\t Size\t Offset\t Range\n"); ! 314: for (part = PART('a'); part < NPARTITIONS; part++) { ! 315: printf("\t%c\t", 'a' + part); ! 316: if (numcyls[part] == 0) { ! 317: printf(" unused\n"); ! 318: continue; ! 319: } ! 320: printf("%7d\t%7d\t%4d - %d%s\n", ! 321: defpart[def][part], startcyl[part] * spc, ! 322: startcyl[part], startcyl[part] + numcyls[part] - 1, ! 323: defpart[def][part] % spc ? "*" : ""); ! 324: } ! 325: } ! 326: ! 327: struct disklabel disk; ! 328: ! 329: struct field { ! 330: char *f_name; ! 331: char *f_defaults; ! 332: u_long *f_location; ! 333: } fields[] = { ! 334: { "sector size", "512", &disk.d_secsize }, ! 335: { "#sectors/track", 0, &disk.d_nsectors }, ! 336: { "#tracks/cylinder", 0, &disk.d_ntracks }, ! 337: { "#cylinders", 0, &disk.d_ncylinders }, ! 338: { 0, 0, 0 }, ! 339: }; ! 340: ! 341: struct disklabel * ! 342: promptfordisk(name) ! 343: char *name; ! 344: { ! 345: register struct disklabel *dp = &disk; ! 346: register struct field *fp; ! 347: register i; ! 348: char buf[BUFSIZ], **tp, *cp, *gets(); ! 349: ! 350: strncpy(dp->d_typename, name, sizeof(dp->d_typename)); ! 351: fprintf(stderr, ! 352: "%s: unknown disk type, want to supply parameters (y/n)? ", ! 353: name); ! 354: (void) gets(buf); ! 355: if (*buf != 'y') ! 356: return ((struct disklabel *)0); ! 357: for (;;) { ! 358: fprintf(stderr, "Disk/controller type (%s)? ", dktypenames[1]); ! 359: (void) gets(buf); ! 360: if (buf[0] == 0) ! 361: dp->d_type = 1; ! 362: else ! 363: dp->d_type = gettype(buf, dktypenames); ! 364: if (dp->d_type >= 0) ! 365: break; ! 366: fprintf(stderr, "%s: unrecognized controller type\n", buf); ! 367: fprintf(stderr, "use one of:\n", buf); ! 368: for (tp = dktypenames; *tp; tp++) ! 369: if (index(*tp, ' ') == 0) ! 370: fprintf(stderr, "\t%s\n", *tp); ! 371: } ! 372: gettype: ! 373: dp->d_flags = 0; ! 374: fprintf(stderr, "type (winchester|removable|simulated)? "); ! 375: (void) gets(buf); ! 376: if (strcmp(buf, "removable") == 0) ! 377: dp->d_flags = D_REMOVABLE; ! 378: else if (strcmp(buf, "simulated") == 0) ! 379: dp->d_flags = D_RAMDISK; ! 380: else if (strcmp(buf, "winchester")) { ! 381: fprintf(stderr, "%s: bad disk type\n", buf); ! 382: goto gettype; ! 383: } ! 384: strncpy(dp->d_typename, buf, sizeof(dp->d_typename)); ! 385: fprintf(stderr, "(type <cr> to get default value, if only one)\n"); ! 386: if (dp->d_type == DTYPE_SMD) ! 387: fprintf(stderr, "Do %ss support bad144 bad block forwarding (yes)? ", ! 388: dp->d_typename); ! 389: (void) gets(buf); ! 390: if (*buf != 'n') ! 391: dp->d_flags |= D_BADSECT; ! 392: for (fp = fields; fp->f_name != NULL; fp++) { ! 393: again: ! 394: fprintf(stderr, "%s ", fp->f_name); ! 395: if (fp->f_defaults != NULL) ! 396: fprintf(stderr, "(%s)", fp->f_defaults); ! 397: fprintf(stderr, "? "); ! 398: cp = gets(buf); ! 399: if (*cp == '\0') { ! 400: if (fp->f_defaults == NULL) { ! 401: fprintf(stderr, "no default value\n"); ! 402: goto again; ! 403: } ! 404: cp = fp->f_defaults; ! 405: } ! 406: *fp->f_location = atol(cp); ! 407: if (*fp->f_location == 0) { ! 408: fprintf(stderr, "%s: bad value\n", cp); ! 409: goto again; ! 410: } ! 411: } ! 412: fprintf(stderr, "sectors/cylinder (%d)? ", ! 413: dp->d_nsectors * dp->d_ntracks); ! 414: (void) gets(buf); ! 415: if (buf[0] == 0) ! 416: dp->d_secpercyl = dp->d_nsectors * dp->d_ntracks; ! 417: else ! 418: dp->d_secpercyl = atol(buf); ! 419: fprintf(stderr, "Drive-type-specific parameters, <cr> to terminate:\n"); ! 420: for (i = 0; i < NDDATA; i++) { ! 421: fprintf(stderr, "d%d? ", i); ! 422: (void) gets(buf); ! 423: if (buf[0] == 0) ! 424: break; ! 425: dp->d_drivedata[i] = atol(buf); ! 426: } ! 427: return (dp); ! 428: } ! 429: ! 430: gettype(t, names) ! 431: char *t; ! 432: char **names; ! 433: { ! 434: register char **nm; ! 435: ! 436: for (nm = names; *nm; nm++) ! 437: if (ustrcmp(t, *nm) == 0) ! 438: return (nm - names); ! 439: if (isdigit(*t)) ! 440: return (atoi(t)); ! 441: return (-1); ! 442: } ! 443: ! 444: ustrcmp(s1, s2) ! 445: register char *s1, *s2; ! 446: { ! 447: #define lower(c) (islower(c) ? (c) : tolower(c)) ! 448: ! 449: for (; *s1; s1++, s2++) { ! 450: if (*s1 == *s2) ! 451: continue; ! 452: if (isalpha(*s1) && isalpha(*s2) && ! 453: lower(*s1) == lower(*s2)) ! 454: continue; ! 455: return (*s2 - *s1); ! 456: } ! 457: return (0); ! 458: }
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