main.c revision 1.51
1 /* $NetBSD: main.c,v 1.51 2019/07/02 16:23:47 mlelstv Exp $ */ 2 3 /* 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julio M. Merino Vidal. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1987, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Symmetric Computer Systems. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 #if HAVE_NBTOOL_CONFIG_H 65 #include "nbtool_config.h" 66 #endif 67 68 #include <sys/cdefs.h> 69 #ifndef lint 70 __COPYRIGHT("@(#) Copyright (c) 1987, 1993\ 71 The Regents of the University of California. All rights reserved."); 72 #endif /* not lint */ 73 74 #ifndef lint 75 #if 0 76 static char sccsid[] = "@(#)disklabel.c 8.4 (Berkeley) 5/4/95"; 77 /* from static char sccsid[] = "@(#)disklabel.c 1.2 (Symmetric) 11/28/85"; */ 78 #else 79 __RCSID("$NetBSD: main.c,v 1.51 2019/07/02 16:23:47 mlelstv Exp $"); 80 #endif 81 #endif /* not lint */ 82 83 #include <sys/param.h> 84 #include <sys/file.h> 85 #include <sys/stat.h> 86 #include <sys/wait.h> 87 #define DKTYPENAMES 88 #define FSTYPENAMES 89 90 #include <ctype.h> 91 #include <err.h> 92 #include <errno.h> 93 #include <signal.h> 94 #include <string.h> 95 #include <stdio.h> 96 #include <stdlib.h> 97 #include <limits.h> 98 #include <unistd.h> 99 100 #include <ufs/ufs/dinode.h> 101 #include <ufs/ffs/fs.h> 102 103 #if HAVE_NBTOOL_CONFIG_H 104 #include <nbinclude/sys/disklabel.h> 105 #include <nbinclude/sys/disklabel_acorn.h> 106 #include <nbinclude/sys/bootblock.h> 107 #include "../../include/disktab.h" 108 #else 109 #include <sys/ioctl.h> 110 #include <sys/disklabel.h> 111 #include <sys/disklabel_acorn.h> 112 #include <sys/bootblock.h> 113 #include <util.h> 114 #include <disktab.h> 115 #endif /* HAVE_NBTOOL_CONFIG_H */ 116 117 #include "pathnames.h" 118 #include "extern.h" 119 #include "dkcksum.h" 120 #include "bswap.h" 121 122 /* 123 * Disklabel: read and write disklabels. 124 * The label is usually placed on one of the first sectors of the disk. 125 * Many machines also place a bootstrap in the same area, 126 * in which case the label is embedded in the bootstrap. 127 * The bootstrap source must leave space at the proper offset 128 * for the label on such machines. 129 */ 130 131 #ifndef BBSIZE 132 #define BBSIZE 8192 /* size of boot area, with label */ 133 #endif 134 135 #define DISKMAGIC_REV bswap32(DISKMAGIC) 136 /* To delete a label, we just invert the magic numbers */ 137 #define DISKMAGIC_DELETED (~DISKMAGIC) 138 #define DISKMAGIC_DELETED_REV bswap32(~DISKMAGIC) 139 140 #define DEFEDITOR _PATH_VI 141 142 char specname[MAXPATHLEN]; 143 144 /* Some global data, all too hard to pass about */ 145 char bootarea[BBSIZE]; /* Buffer matching part of disk */ 146 int bootarea_len; /* Number of bytes we actually read */ 147 static struct disklabel lab; /* The label we have updated */ 148 149 static int Aflag; /* Action all labels */ 150 static int Fflag; /* Read/write from file */ 151 static int rflag; /* Read/write direct from disk */ 152 static int tflag; /* Format output as disktab */ 153 int Cflag; /* CHS format output */ 154 static int Dflag; /* Delete old labels (use with write) */ 155 static int Iflag; /* Read/write direct, but default if absent */ 156 static int lflag; /* List all known file system types and exit */ 157 static int verbose; 158 static int read_all; /* set if op = READ && Aflag */ 159 160 static int write_label(int); 161 static int readlabel_direct(int); 162 static void writelabel_direct(int); 163 static int update_label(int, u_int, u_int); 164 static struct disklabel *find_label(int, u_int); 165 #if !defined(NATIVELABEL_ONLY) 166 static void getmachineparams(const char *); 167 #endif 168 169 static void makedisktab(FILE *, struct disklabel *); 170 static void makelabel(const char *, const char *); 171 static void l_perror(const char *); 172 static void readlabel(int); 173 static int edit(int); 174 static int editit(const char *); 175 static char *skip(char *); 176 static char *word(char *); 177 static int getasciilabel(FILE *, struct disklabel *); 178 __dead static void usage(void); 179 static int qsort_strcmp(const void *, const void *); 180 static int getulong(const char *, char, char **, 181 unsigned long *, unsigned long); 182 #define GETNUM32(a, v) getulong(a, '\0', NULL, v, UINT32_MAX) 183 #define GETNUM16(a, v) getulong(a, '\0', NULL, v, UINT16_MAX) 184 #define GETNUM8(a, v) getulong(a, '\0', NULL, v, UINT8_MAX) 185 186 static int set_writable_fd = -1; 187 188 #if !defined(NATIVELABEL_ONLY) 189 static u_int labeloffset; 190 static u_int labelsector; 191 static int labelusesmbr; 192 u_int maxpartitions; 193 static int byteorder; 194 195 static int biendian_p; 196 #ifndef HAVE_NBTOOL_CONFIG_H 197 static int native_p = 1; 198 #endif 199 int bswap_p; 200 201 static const struct disklabel_params { 202 const char *machine; 203 u_char labelusesmbr : 1; 204 u_char labelsector : 7; 205 u_char maxpartitions; 206 u_char raw_part; 207 u_char oldmaxpartitions; 208 u_short labeloffset; 209 u_short byteorder; 210 } disklabel_params[] = { 211 { "mvme68k", 0, 0, 8, 2, 0, 0, BIG_ENDIAN }, /* m68k */ 212 { "next68k", 0, 0, 8, 2, 0, 0, BIG_ENDIAN }, /* m68k */ 213 214 { "algor", 0, 0, 8, 2, 0, 64, LITTLE_ENDIAN }, /* mips */ 215 { "alpha", 0, 0, 8, 2, 0, 64, LITTLE_ENDIAN }, /* alpha */ 216 { "luna68k", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* m68k */ 217 { "mac68k", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* m68k */ 218 { "news68k", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* m68k */ 219 { "newsmips", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* mips */ 220 { "pmax", 0, 0, 8, 2, 0, 64, LITTLE_ENDIAN }, /* mips */ 221 { "sun2", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* m68k */ 222 { "sun68k", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* m68010 */ 223 { "x68k", 0, 0, 8, 2, 0, 64, BIG_ENDIAN }, /* m68010 */ 224 225 { "vax", 0, 0, 12, 2, 8, 64, LITTLE_ENDIAN }, /* vax */ 226 227 { "amiga", 0, 0, 16, 2, 0, 64, BIG_ENDIAN }, /* m68k */ 228 { "amigappc", 0, 0, 16, 2, 0, 64, BIG_ENDIAN }, /* powerpc */ 229 { "evbmips", 0, 0, 16, 2, 0, 64, 0 }, /* mips */ 230 { "evbppc", 0, 0, 16, 2, 0, 64, BIG_ENDIAN }, /* powerpc */ 231 232 { "sparc", 0, 0, 8, 2, 0, 128, BIG_ENDIAN }, /* sun */ 233 { "sparc64", 0, 0, 8, 2, 0, 128, BIG_ENDIAN }, /* sun */ 234 { "sun3", 0, 0, 8, 2, 0, 128, BIG_ENDIAN }, /* sun */ 235 236 { "atari", 0, 0, 16, 2, 0, 516, BIG_ENDIAN }, /* m68k */ 237 238 { "mipsco", 0, 1, 8, 2, 0, 0, BIG_ENDIAN }, /* mips */ 239 { "mvmeppc", 0, 1, 8, 3, 0, 0, BIG_ENDIAN }, /* powerpc */ 240 241 { "bebox", 0, 1, 8, 3, 0, 0, BIG_ENDIAN }, /* powerpc */ 242 243 { "emips", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* mips */ 244 { "hppa", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* hppa */ 245 { "ibmnws", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* powerpc */ 246 { "ofppc", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* powerpc */ 247 { "rs6000", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* powerpc */ 248 { "sandpoint", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* powerpc */ 249 { "sgimips", 0, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* mips */ 250 251 { "sbmips", 0, 1, 16, 3, 0, 0, 0 }, /* mips */ 252 253 { "cesfic", 0, 2, 8, 2, 0, 0, BIG_ENDIAN }, /* m68k */ 254 { "hp300", 0, 2, 8, 2, 0, 0, BIG_ENDIAN }, /* m68k */ 255 256 { "ews4800mips",0, 9, 16, 15, 0, 0, BIG_ENDIAN }, /* mips */ 257 258 { "macppc", 1, 0, 16, 2, 0, 64, BIG_ENDIAN }, /* powerpc */ 259 { "pmon", 1, 0, 16, 2, 0, 64, 0 }, /* evbmips */ 260 261 { "prep", 1, 1, 8, 2, 0, 0, BIG_ENDIAN }, /* powerpc */ 262 263 { "dreamcast", 1, 1, 16, 2, 0, 0, LITTLE_ENDIAN }, /* sh3 */ 264 { "evbcf", 1, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* coldfire */ 265 { "evbppc-mbr", 1, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* powerpc */ 266 { "evbsh3", 1, 1, 16, 2, 0, 0, 0 }, /* sh3 */ 267 { "hpcsh", 1, 1, 16, 2, 0, 0, LITTLE_ENDIAN }, /* sh3 */ 268 { "mmeye", 1, 1, 16, 2, 0, 0, 0 }, /* sh3 */ 269 { "or1k", 1, 1, 16, 2, 0, 0, BIG_ENDIAN }, /* or1k */ 270 { "riscv", 1, 1, 16, 2, 0, 0, LITTLE_ENDIAN }, /* riscv */ 271 272 { "acorn32", 1, 1, 16, 2, 8, 0, LITTLE_ENDIAN }, /* arm */ 273 { "cats", 1, 1, 16, 2, 8, 0, LITTLE_ENDIAN }, /* arm */ 274 { "evbarm", 1, 1, 16, 2, 8, 0, 0 }, /* arm */ 275 { "iyonix", 1, 1, 16, 2, 8, 0, LITTLE_ENDIAN }, /* arm */ 276 { "netwinder", 1, 1, 16, 2, 8, 0, LITTLE_ENDIAN }, /* arm */ 277 { "shark", 1, 1, 16, 2, 8, 0, LITTLE_ENDIAN }, /* arm */ 278 279 { "amd64", 1, 1, 16, 3, 0, 0, LITTLE_ENDIAN }, /* x86 */ 280 { "arc", 1, 1, 16, 3, 0, 0, LITTLE_ENDIAN }, /* mips */ 281 { "cobalt", 1, 1, 16, 3, 0, 0, LITTLE_ENDIAN }, /* mips */ 282 { "landisk", 1, 1, 16, 3, 0, 0, LITTLE_ENDIAN }, /* sh3 */ 283 284 { "epoc32", 1, 1, 16, 3, 8, 0, LITTLE_ENDIAN }, /* arm */ 285 { "hpcarm", 1, 1, 16, 3, 8, 0, LITTLE_ENDIAN }, /* arm */ 286 { "hpcmips", 1, 1, 16, 3, 8, 0, LITTLE_ENDIAN }, /* mips */ 287 { "i386", 1, 1, 16, 3, 8, 0, LITTLE_ENDIAN }, /* x86 */ 288 { "ia64", 1, 1, 16, 3, 8, 0, LITTLE_ENDIAN }, /* x86 */ 289 { "zaurus", 1, 1, 16, 3, 8, 0, LITTLE_ENDIAN }, /* arm */ 290 291 { NULL, 0, 0, 0, 0, 0, 0, 0 }, /* must be last */ 292 }; 293 294 #ifndef HAVE_NBTOOL_CONFIG_H 295 static struct disklabel_params native_params; 296 #endif 297 298 static const struct arch_endian { 299 int byteorder; 300 const char *arch; 301 } arch_endians[] = { 302 { LITTLE_ENDIAN, "aarch64" }, 303 { LITTLE_ENDIAN, "alpha" }, 304 { LITTLE_ENDIAN, "arm" }, 305 { LITTLE_ENDIAN, "earm" }, 306 { LITTLE_ENDIAN, "earmhf" }, 307 { LITTLE_ENDIAN, "earmv4" }, 308 { LITTLE_ENDIAN, "earmv5" }, 309 { LITTLE_ENDIAN, "earmv6" }, 310 { LITTLE_ENDIAN, "earmv6hf" }, 311 { LITTLE_ENDIAN, "earmv7" }, 312 { LITTLE_ENDIAN, "earmv7hf" }, 313 { LITTLE_ENDIAN, "i386" }, 314 { LITTLE_ENDIAN, "ia64" }, 315 { LITTLE_ENDIAN, "mipsel" }, 316 { LITTLE_ENDIAN, "mips64el" }, 317 { LITTLE_ENDIAN, "riscv32" }, 318 { LITTLE_ENDIAN, "riscv64" }, 319 { LITTLE_ENDIAN, "sh3el" }, 320 { LITTLE_ENDIAN, "vax" }, 321 { LITTLE_ENDIAN, "x86_64" }, 322 323 { BIG_ENDIAN, "aarch64eb" }, 324 { BIG_ENDIAN, "armeb" }, 325 { BIG_ENDIAN, "coldfire" }, 326 { BIG_ENDIAN, "earmeb" }, 327 { BIG_ENDIAN, "earmhfeb" }, 328 { BIG_ENDIAN, "earmv4eb" }, 329 { BIG_ENDIAN, "earmv5eb" }, 330 { BIG_ENDIAN, "earmv6eb" }, 331 { BIG_ENDIAN, "earmv6hfeb" }, 332 { BIG_ENDIAN, "earmv7eb" }, 333 { BIG_ENDIAN, "earmv7hfeb" }, 334 { BIG_ENDIAN, "hppa" }, 335 { BIG_ENDIAN, "m68000" }, 336 { BIG_ENDIAN, "m68k" }, 337 { BIG_ENDIAN, "mipseb" }, 338 { BIG_ENDIAN, "mips64eb" }, 339 { BIG_ENDIAN, "or1k" }, 340 { BIG_ENDIAN, "powerpc" }, 341 { BIG_ENDIAN, "sh3eb" }, 342 { BIG_ENDIAN, "sparc" }, 343 { BIG_ENDIAN, "sparc64" }, 344 345 { 0, NULL }, 346 }; 347 348 /* Default location for label - only used if we don't find one to update */ 349 #define LABEL_OFFSET (dklabel_getlabelsector() * DEV_BSIZE + dklabel_getlabeloffset()) 350 #else 351 #define labeloffset LABELOFFSET 352 #define labelsector LABELSECTOR 353 #define labelusesmbr LABELUSESMBR 354 #define maxpartitions MAXPARTITIONS 355 #define LABEL_OFFSET LABELOFFSET 356 #endif /* !NATIVELABEL_ONLY */ 357 358 /* 359 * For portability it doesn't make sense to use any other value.... 360 * Except, maybe, the size of a physical sector. 361 * This value is used if we have to write a label to the start of an mbr ptn. 362 */ 363 #ifndef LABELOFFSET_MBR 364 #define LABELOFFSET_MBR 512 365 #endif 366 367 #if HAVE_NBTOOL_CONFIG_H 368 static int 369 opendisk(const char *path, int flags, char *buf, int buflen, int cooked) 370 { 371 int f; 372 f = open(path, flags, 0); 373 strlcpy(buf, path, buflen); 374 return f; 375 } 376 #endif /* HAVE_NBTOOL_CONFIG_H */ 377 378 #if !defined(NATIVELABEL_ONLY) 379 static void 380 setbyteorder(int new_byteorder) 381 { 382 static int set_p; 383 384 if ((!biendian_p || set_p) 385 && byteorder != 0 386 && byteorder != new_byteorder) { 387 warnx("changing %s byteorder to %s", 388 byteorder == LITTLE_ENDIAN ? "le" : "be", 389 new_byteorder == LITTLE_ENDIAN ? "le" : "be"); 390 } 391 byteorder = new_byteorder; 392 biendian_p = 0; 393 set_p = 1; 394 } 395 396 static void 397 getmachineparams(const char *mach) 398 { 399 const struct disklabel_params *dp = disklabel_params; 400 for (; dp->machine != NULL; dp++) { 401 if (!strcmp(mach, dp->machine)) { 402 labelusesmbr = dp->labelusesmbr; 403 labelsector = dp->labelsector; 404 labeloffset = dp->labeloffset; 405 maxpartitions = dp->maxpartitions; 406 biendian_p = (dp->byteorder == 0); 407 if (!biendian_p) 408 setbyteorder(dp->byteorder); 409 return; 410 } 411 } 412 errx(1, "%s: unknown machine type", mach); 413 } 414 415 static void 416 getarchbyteorder(const char *arch) 417 { 418 const struct arch_endian *p = arch_endians; 419 for (; p->arch != NULL; p++) { 420 if (!strcmp(arch, p->arch)) { 421 setbyteorder(p->byteorder); 422 return; 423 } 424 } 425 errx(1, "%s: unknown arch", arch); 426 } 427 428 static daddr_t 429 dklabel_getlabelsector(void) 430 { 431 unsigned long int nval; 432 char *end; 433 const char *val; 434 435 if ((val = getenv("DISKLABELSECTOR")) == NULL) 436 return labelsector; 437 if ((nval = strtoul(val, &end, 10)) == ULONG_MAX && errno == ERANGE) 438 err(EXIT_FAILURE, "DISKLABELSECTOR in environment"); 439 return nval; 440 } 441 442 static off_t 443 dklabel_getlabeloffset(void) 444 { 445 unsigned long int nval; 446 char *end; 447 const char *val; 448 449 if ((val = getenv("DISKLABELOFFSET")) == NULL) 450 return labeloffset; 451 if ((nval = strtoul(val, &end, 10)) == ULONG_MAX && errno == ERANGE) 452 err(EXIT_FAILURE, "DISKLABELOFFSET in environment"); 453 return nval; 454 } 455 #endif /* !NATIVELABEL_ONLY */ 456 457 static void 458 clear_writable(void) 459 { 460 static int zero = 0; 461 dk_ioctl(set_writable_fd, DIOCWLABEL, &zero); 462 } 463 464 int 465 main(int argc, char *argv[]) 466 { 467 FILE *t; 468 int ch, f, error; 469 char *dkname; 470 #if !defined(NATIVELABEL_ONLY) 471 char *cp; 472 #endif 473 struct stat sb; 474 int writable; 475 enum { 476 UNSPEC, EDIT, READ, RESTORE, SETWRITABLE, SETREADONLY, 477 WRITE, 478 #if !defined(NO_INTERACT) 479 INTERACT, 480 #endif 481 DELETE 482 } op = UNSPEC, old_op; 483 unsigned long val; 484 485 #ifndef HAVE_NBTOOL_CONFIG_H 486 #if !defined(NATIVELABEL_ONLY) 487 labeloffset = native_params.labeloffset = getlabeloffset(); 488 labelsector = native_params.labelsector = getlabelsector(); 489 labelusesmbr = native_params.labelusesmbr = getlabelusesmbr(); 490 maxpartitions = native_params.maxpartitions = getmaxpartitions(); 491 byteorder = native_params.byteorder = BYTE_ORDER; 492 #endif 493 #endif 494 495 #if !defined(NATIVELABEL_ONLY) 496 if ((cp = getenv("MACHINE")) != NULL) { 497 getmachineparams(cp); 498 } 499 500 if ((cp = getenv("MACHINE_ARCH")) != NULL) { 501 getarchbyteorder(cp); 502 } 503 #endif 504 505 #if HAVE_NBTOOL_CONFIG_H 506 /* We must avoid doing any ioctl requests */ 507 Fflag = rflag = 1; 508 #endif 509 510 error = 0; 511 while ((ch = getopt(argc, argv, "AB:CDFIL:M:NO:P:RWef:ilmnrtvw")) != -1) { 512 old_op = op; 513 switch (ch) { 514 case 'A': /* Action all labels */ 515 Aflag = 1; 516 rflag = 1; 517 break; 518 case 'C': /* Display in CHS format */ 519 Cflag = 1; 520 break; 521 case 'D': /* Delete all existing labels */ 522 Dflag = 1; 523 rflag = 1; 524 break; 525 case 'F': /* Treat 'disk' as a regular file */ 526 Fflag = 1; 527 rflag = 1; /* Force direct access */ 528 break; 529 case 'I': /* Use default label if none found */ 530 Iflag = 1; 531 rflag = 1; /* Implies direct access */ 532 break; 533 case 'R': /* Restore label from text file */ 534 op = RESTORE; 535 break; 536 #if !defined(NATIVELABEL_ONLY) 537 case 'B': /* byteorder */ 538 if (!strcmp(optarg, "be")) { 539 setbyteorder(BIG_ENDIAN); 540 } else if (!strcmp(optarg, "le")) { 541 setbyteorder(LITTLE_ENDIAN); 542 } else { 543 errx(1, "%s: not be or le", optarg); 544 } 545 break; 546 case 'M': /* machine type */ 547 getmachineparams(optarg); 548 break; 549 #endif 550 case 'N': /* Disallow writes to label sector */ 551 op = SETREADONLY; 552 break; 553 case 'L': /* Label sector */ 554 val = strtoul(optarg, NULL, 10); 555 if ((val == ULONG_MAX && errno == ERANGE) || val > UINT_MAX) 556 err(EXIT_FAILURE, "invalid label sector: %s", optarg); 557 labelsector = val; 558 break; 559 case 'O': /* Label offset */ 560 val = strtoul(optarg, NULL, 10); 561 if ((val == ULONG_MAX && errno == ERANGE) || val > UINT_MAX) 562 err(EXIT_FAILURE, "invalid label offset: %s", optarg); 563 labeloffset = val; 564 break; 565 case 'P': /* Max partitions */ 566 val = strtoul(optarg, NULL, 10); 567 if ((val == ULONG_MAX && errno == ERANGE) || val < 1 || val > UINT_MAX) 568 err(EXIT_FAILURE, "invalid max partitions: %s", optarg); 569 maxpartitions = val; 570 break; 571 case 'W': /* Allow writes to label sector */ 572 op = SETWRITABLE; 573 break; 574 case 'e': /* Edit label with $EDITOR */ 575 op = EDIT; 576 break; 577 case 'f': /* Name of disktab file */ 578 if (setdisktab(optarg) == -1) 579 usage(); 580 break; 581 #if !defined(NO_INTERACT) 582 case 'i': /* Edit using built-in editor */ 583 op = INTERACT; 584 break; 585 #endif /* !NO_INTERACT */ 586 case 'l': /* List all known file system types and exit */ 587 lflag = 1; 588 break; 589 case 'm': /* Expect disk to have an MBR */ 590 labelusesmbr = 1; 591 break; 592 case 'n': /* Expect disk to not have an MBR */ 593 labelusesmbr = 0; 594 break; 595 case 'r': /* Read/write label directly from disk */ 596 rflag = 1; 597 break; 598 case 't': /* Format output as a disktab entry */ 599 tflag = 1; 600 break; 601 case 'v': /* verbose/diag output */ 602 verbose++; 603 break; 604 case 'w': /* Write label based on disktab entry */ 605 op = WRITE; 606 break; 607 case '?': 608 default: 609 usage(); 610 } 611 if (old_op != UNSPEC && old_op != op) 612 usage(); 613 } 614 615 if (maxpartitions > MAXPARTITIONS) { 616 errx(1, "too large maxpartitions > %u\n", MAXPARTITIONS); 617 } 618 619 #if !defined(NATIVELABEL_ONLY) 620 if (maxpartitions == 0) { 621 errx(1, "unknown label: use -M/-B and $MACHINE/$MACHINE_ARCH"); 622 } 623 if (byteorder != BIG_ENDIAN && byteorder != LITTLE_ENDIAN) { 624 errx(1, "unknown byteorder"); 625 } 626 bswap_p = (byteorder != BYTE_ORDER); 627 #ifdef DEBUG 628 printf("labelusesmbr=%d labelsector=%u labeloffset=%u maxpartitions=%u\n", 629 labelusesmbr, labelsector, labeloffset, maxpartitions); 630 printf("byteorder=%d bswap_p=%d\n", byteorder, bswap_p); 631 #endif 632 #ifndef HAVE_NBTOOL_CONFIG_H 633 /* 634 * If the disklabel has the same location as the native disklabel and 635 * fewer or equal paritions, we can use the native ioctls. Otherwise 636 * force file/raw access. 637 */ 638 native_p = native_params.labelusesmbr == labelusesmbr 639 && native_params.labelsector == labelsector 640 && native_params.labeloffset == labeloffset 641 && maxpartitions <= native_params.maxpartitions 642 && !bswap_p; 643 if (!native_p) 644 Fflag = rflag = 1; 645 #endif 646 #endif /* !NATIVELABEL_ONLY */ 647 648 argc -= optind; 649 argv += optind; 650 651 if (lflag) 652 exit(list_fs_types() ? EXIT_SUCCESS : EXIT_FAILURE); 653 654 if (op == UNSPEC) 655 op = Dflag ? DELETE : READ; 656 657 if (argc < 1) 658 usage(); 659 660 if (Iflag && op != EDIT 661 #if !defined(NO_INTERACT) 662 && op != INTERACT 663 #endif 664 ) 665 usage(); 666 667 dkname = argv[0]; 668 f = opendisk(dkname, op == READ ? O_RDONLY : O_RDWR, 669 specname, sizeof specname, 0); 670 if (f < 0) 671 err(4, "%s", specname); 672 673 if (!Fflag && fstat(f, &sb) == 0 && S_ISREG(sb.st_mode)) 674 Fflag = rflag = 1; 675 676 switch (op) { 677 678 case DELETE: /* Remove all existing labels */ 679 if (argc != 1) 680 usage(); 681 Dflag = 2; 682 writelabel_direct(f); 683 break; 684 685 case EDIT: 686 if (argc != 1) 687 usage(); 688 readlabel(f); 689 error = edit(f); 690 break; 691 692 #if !defined(NO_INTERACT) 693 case INTERACT: 694 if (argc != 1) 695 usage(); 696 readlabel(f); 697 /* 698 * XXX: Fill some default values so checklabel does not fail 699 */ 700 if (lab.d_bbsize == 0) 701 lab.d_bbsize = BBSIZE; 702 if (lab.d_sbsize == 0) 703 lab.d_sbsize = SBLOCKSIZE; 704 interact(&lab, f); 705 break; 706 #endif /* !NO_INTERACT */ 707 708 case READ: 709 if (argc != 1) 710 usage(); 711 read_all = Aflag; 712 readlabel(f); 713 if (read_all) 714 /* Label got printed in the bowels of readlabel */ 715 break; 716 if (tflag) 717 makedisktab(stdout, &lab); 718 else { 719 showinfo(stdout, &lab, specname); 720 showpartitions(stdout, &lab, Cflag); 721 } 722 error = checklabel(&lab); 723 if (error) 724 error += 100; 725 break; 726 727 case RESTORE: 728 if (argc != 2) 729 usage(); 730 if (!(t = fopen(argv[1], "r"))) 731 err(4, "%s", argv[1]); 732 if (getasciilabel(t, &lab)) 733 error = write_label(f); 734 else 735 error = 1; 736 break; 737 738 case SETREADONLY: 739 writable = 0; 740 goto do_diocwlabel; 741 case SETWRITABLE: 742 writable = 1; 743 do_diocwlabel: 744 if (argc != 1) 745 usage(); 746 if (dk_ioctl(f, DIOCWLABEL, &writable) < 0) 747 err(4, "ioctl DIOCWLABEL"); 748 break; 749 750 case WRITE: /* Create label from /etc/disktab entry & write */ 751 if (argc < 2 || argc > 3) 752 usage(); 753 makelabel(argv[1], argv[2]); 754 if (checklabel(&lab) == 0) 755 error = write_label(f); 756 else 757 error = 1; 758 break; 759 760 case UNSPEC: 761 usage(); 762 763 } 764 exit(error); 765 } 766 767 /* 768 * Construct a prototype disklabel from /etc/disktab. 769 */ 770 static void 771 makelabel(const char *type, const char *name) 772 { 773 struct disklabel *dp; 774 775 dp = getdiskbyname(type); 776 if (dp == NULL) 777 errx(1, "unknown disk type: %s", type); 778 lab = *dp; 779 780 /* d_packname is union d_boot[01], so zero */ 781 (void)memset(lab.d_packname, 0, sizeof(lab.d_packname)); 782 if (name) 783 (void)strncpy(lab.d_packname, name, sizeof(lab.d_packname)); 784 } 785 786 static int 787 write_label(int f) 788 { 789 int writable; 790 791 lab.d_magic = DISKMAGIC; 792 lab.d_magic2 = DISKMAGIC; 793 lab.d_checksum = 0; 794 lab.d_checksum = dkcksum(&lab); 795 796 if (rflag) { 797 /* Write the label directly to the disk */ 798 799 /* 800 * First set the kernel disk label, 801 * then write a label to the raw disk. 802 * If the SDINFO ioctl fails because it is unimplemented, 803 * keep going; otherwise, the kernel consistency checks 804 * may prevent us from changing the current (in-core) 805 * label. 806 */ 807 if (!Fflag && dk_ioctl(f, DIOCSDINFO, &lab) < 0 && 808 errno != ENODEV && errno != ENOTTY) { 809 l_perror("ioctl DIOCSDINFO"); 810 return (1); 811 } 812 /* 813 * write enable label sector before write (if necessary), 814 * disable after writing. 815 */ 816 writable = 1; 817 if (!Fflag) { 818 if (dk_ioctl(f, DIOCWLABEL, &writable) < 0) 819 perror("ioctl DIOCWLABEL"); 820 set_writable_fd = f; 821 atexit(clear_writable); 822 } 823 824 writelabel_direct(f); 825 826 /* 827 * Now issue a DIOCWDINFO. This will let the kernel convert the 828 * disklabel to some machdep format if needed. 829 */ 830 /* XXX: This is stupid! */ 831 if (!Fflag && dk_ioctl(f, DIOCWDINFO, &lab) < 0) { 832 l_perror("ioctl DIOCWDINFO"); 833 return (1); 834 } 835 } else { 836 /* Get the kernel to write the label */ 837 if (dk_ioctl(f, DIOCWDINFO, &lab) < 0) { 838 l_perror("ioctl DIOCWDINFO"); 839 return (1); 840 } 841 } 842 843 #ifdef VAX_ALTLABELS 844 if (lab.d_type == DKTYPE_SMD && lab.d_flags & D_BADSECT && 845 lab.d_secsize == 512) { 846 /* Write the label to the odd sectors of the last track! */ 847 daddr_t alt; 848 int i; 849 uint8_t sec0[512]; 850 851 if (pread(f, sec0, 512, 0) < 512) { 852 warn("read master label to write alternates"); 853 return 0; 854 } 855 856 alt = lab.d_ncylinders * lab.d_secpercyl - lab.d_nsectors; 857 for (i = 1; i < 11 && (uint32_t)i < lab.d_nsectors; i += 2) { 858 if (pwrite(f, sec0, 512, (off_t)(alt + i) * 512) < 512) 859 warn("alternate label %d write", i/2); 860 } 861 } 862 #endif /* VAX_ALTLABELS */ 863 864 return 0; 865 } 866 867 int 868 writelabel(int f, struct disklabel *lp) 869 { 870 if (lp != &lab) 871 lab = *lp; 872 return write_label(f); 873 } 874 875 static void 876 l_perror(const char *s) 877 { 878 879 switch (errno) { 880 881 case ESRCH: 882 warnx("%s: No disk label on disk;\n" 883 "use \"disklabel -I\" to install initial label", s); 884 break; 885 886 case EINVAL: 887 warnx("%s: Label magic number or checksum is wrong!\n" 888 "(disklabel or kernel is out of date?)", s); 889 break; 890 891 case EBUSY: 892 warnx("%s: Open partition would move or shrink", s); 893 break; 894 895 case EXDEV: 896 warnx("%s: Labeled partition or 'a' partition must start" 897 " at beginning of disk", s); 898 break; 899 900 default: 901 warn("%s", s); 902 break; 903 } 904 } 905 906 #ifdef NO_MBR_SUPPORT 907 #define process_mbr(f, action) 1 908 #else 909 /* 910 * Scan DOS/MBR partition table and extended partition list for NetBSD ptns. 911 */ 912 static int 913 process_mbr(int f, int (*action)(int, u_int)) 914 { 915 struct mbr_partition *dp; 916 struct mbr_sector mbr; 917 int rval = 1, res; 918 int part; 919 u_int ext_base, next_ext, this_ext, start; 920 921 ext_base = 0; 922 next_ext = 0; 923 for (;;) { 924 this_ext = next_ext; 925 next_ext = 0; 926 if (verbose > 1) 927 warnx("reading mbr sector %u", this_ext); 928 if (pread(f, &mbr, sizeof mbr, this_ext * (off_t)DEV_BSIZE) 929 != sizeof(mbr)) { 930 if (verbose) 931 warn("Can't read master boot record %u", 932 this_ext); 933 break; 934 } 935 936 /* Check if table is valid. */ 937 if (mbr.mbr_magic != htole16(MBR_MAGIC)) { 938 if (verbose) 939 warnx("Invalid signature in mbr record %u", 940 this_ext); 941 break; 942 } 943 944 dp = &mbr.mbr_parts[0]; 945 946 /* Find NetBSD partition(s). */ 947 for (part = 0; part < MBR_PART_COUNT; dp++, part++) { 948 start = le32toh(dp->mbrp_start); 949 switch (dp->mbrp_type) { 950 #ifdef COMPAT_386BSD_MBRPART 951 case MBR_PTYPE_386BSD: 952 if (ext_base != 0) 953 break; 954 /* FALLTHROUGH */ 955 #endif 956 case MBR_PTYPE_NETBSD: 957 res = action(f, this_ext + start); 958 if (res <= 0) 959 /* Found or failure */ 960 return res; 961 if (res > rval) 962 /* Keep largest value */ 963 rval = res; 964 break; 965 case MBR_PTYPE_EXT: 966 case MBR_PTYPE_EXT_LBA: 967 case MBR_PTYPE_EXT_LNX: 968 next_ext = start; 969 break; 970 default: 971 break; 972 } 973 } 974 if (next_ext == 0) 975 /* No more extended partitions */ 976 break; 977 next_ext += ext_base; 978 if (ext_base == 0) 979 ext_base = next_ext; 980 981 if (next_ext <= this_ext) { 982 if (verbose) 983 warnx("Invalid extended chain %x <= %x", 984 next_ext, this_ext); 985 break; 986 } 987 /* Maybe we should check against the disk size... */ 988 } 989 990 return rval; 991 } 992 993 static int 994 readlabel_mbr(int f, u_int sector) 995 { 996 struct disklabel *disk_lp; 997 998 disk_lp = find_label(f, sector); 999 if (disk_lp == NULL) 1000 return 1; 1001 targettohlabel(&lab, disk_lp); 1002 return 0; 1003 } 1004 1005 static int 1006 writelabel_mbr(int f, u_int sector) 1007 { 1008 return update_label(f, sector, labelusesmbr ? LABELOFFSET_MBR : ~0U) ? 2 : 0; 1009 } 1010 1011 #endif /* !NO_MBR_SUPPORT */ 1012 1013 #ifndef USE_ACORN 1014 #define get_filecore_partition(f) 0 1015 #else 1016 /* 1017 * static int filecore_checksum(u_char *bootblock) 1018 * 1019 * Calculates the filecore boot block checksum. This is used to validate 1020 * a filecore boot block on the disk. If a boot block is validated then 1021 * it is used to locate the partition table. If the boot block is not 1022 * validated, it is assumed that the whole disk is NetBSD. 1023 * 1024 * The basic algorithm is: 1025 * 1026 * for (each byte in block, excluding checksum) { 1027 * sum += byte; 1028 * if (sum > 255) 1029 * sum -= 255; 1030 * } 1031 * 1032 * That's equivalent to summing all of the bytes in the block 1033 * (excluding the checksum byte, of course), then calculating the 1034 * checksum as "cksum = sum - ((sum - 1) / 255) * 255)". That 1035 * expression may or may not yield a faster checksum function, 1036 * but it's easier to reason about. 1037 * 1038 * Note that if you have a block filled with bytes of a single 1039 * value "X" (regardless of that value!) and calculate the cksum 1040 * of the block (excluding the checksum byte), you will _always_ 1041 * end up with a checksum of X. (Do the math; that can be derived 1042 * from the checksum calculation function!) That means that 1043 * blocks which contain bytes which all have the same value will 1044 * always checksum properly. That's a _very_ unlikely occurence 1045 * (probably impossible, actually) for a valid filecore boot block, 1046 * so we treat such blocks as invalid. 1047 */ 1048 static int 1049 filecore_checksum(u_char *bootblock) 1050 { 1051 u_char byte0, accum_diff; 1052 u_int sum; 1053 int i; 1054 1055 sum = 0; 1056 accum_diff = 0; 1057 byte0 = bootblock[0]; 1058 1059 /* 1060 * Sum the contents of the block, keeping track of whether 1061 * or not all bytes are the same. If 'accum_diff' ends up 1062 * being zero, all of the bytes are, in fact, the same. 1063 */ 1064 for (i = 0; i < 511; ++i) { 1065 sum += bootblock[i]; 1066 accum_diff |= bootblock[i] ^ byte0; 1067 } 1068 1069 /* 1070 * Check to see if the checksum byte is the same as the 1071 * rest of the bytes, too. (Note that if all of the bytes 1072 * are the same except the checksum, a checksum compare 1073 * won't succeed, but that's not our problem.) 1074 */ 1075 accum_diff |= bootblock[i] ^ byte0; 1076 1077 /* All bytes in block are the same; call it invalid. */ 1078 if (accum_diff == 0) 1079 return (-1); 1080 1081 return (sum - ((sum - 1) / 255) * 255); 1082 } 1083 1084 /* 1085 * Check for the presence of a RiscOS filecore boot block 1086 * indicating an ADFS file system on the disc. 1087 * Return the offset to the NetBSD part of the disc if 1088 * this can be determined. 1089 * This routine will terminate disklabel if the disc 1090 * is found to be ADFS only. 1091 */ 1092 static u_int 1093 get_filecore_partition(int f) 1094 { 1095 struct filecore_bootblock *fcbb; 1096 static u_char bb[DEV_BSIZE]; 1097 u_int offset; 1098 struct riscix_partition_table *riscix_part; 1099 int loop; 1100 1101 if (pread(f, bb, sizeof(bb), (off_t)FILECORE_BOOT_SECTOR * DEV_BSIZE) != sizeof(bb)) 1102 err(4, "can't read filecore boot block"); 1103 fcbb = (struct filecore_bootblock *)bb; 1104 1105 /* Check if table is valid. */ 1106 if (filecore_checksum(bb) != fcbb->checksum) 1107 return (0); 1108 1109 /* 1110 * Check for NetBSD/arm32 (RiscBSD) partition marker. 1111 * If found the NetBSD disklabel location is easy. 1112 */ 1113 offset = (fcbb->partition_cyl_low + (fcbb->partition_cyl_high << 8)) 1114 * fcbb->heads * fcbb->secspertrack; 1115 1116 switch (fcbb->partition_type) { 1117 1118 case PARTITION_FORMAT_RISCBSD: 1119 return (offset); 1120 1121 case PARTITION_FORMAT_RISCIX: 1122 /* 1123 * Read the RISCiX partition table and search for the 1124 * first partition named "RiscBSD", "NetBSD", or "Empty:" 1125 * 1126 * XXX is use of 'Empty:' really desirable?! -- cgd 1127 */ 1128 1129 if (pread(f, bb, sizeof(bb), (off_t)offset * DEV_BSIZE) != sizeof(bb)) 1130 err(4, "can't read riscix partition table"); 1131 riscix_part = (struct riscix_partition_table *)bb; 1132 1133 for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) { 1134 if (strcmp((char *)riscix_part->partitions[loop].rp_name, 1135 "RiscBSD") == 0 || 1136 strcmp((char *)riscix_part->partitions[loop].rp_name, 1137 "NetBSD") == 0 || 1138 strcmp((char *)riscix_part->partitions[loop].rp_name, 1139 "Empty:") == 0) { 1140 return riscix_part->partitions[loop].rp_start; 1141 break; 1142 } 1143 } 1144 /* 1145 * Valid filecore boot block, RISCiX partition table 1146 * but no NetBSD partition. We should leave this 1147 * disc alone. 1148 */ 1149 errx(4, "cannot label: no NetBSD partition found" 1150 " in RISCiX partition table"); 1151 1152 default: 1153 /* 1154 * Valid filecore boot block and no non-ADFS partition. 1155 * This means that the whole disc is allocated for ADFS 1156 * so do not trash ! If the user really wants to put a 1157 * NetBSD disklabel on the disc then they should remove 1158 * the filecore boot block first with dd. 1159 */ 1160 errx(4, "cannot label: filecore-only disk" 1161 " (no non-ADFS partition)"); 1162 } 1163 return (0); 1164 } 1165 #endif /* USE_ACORN */ 1166 1167 /* 1168 * Fetch disklabel for disk to 'lab'. 1169 * Use ioctl to get label unless -r flag is given. 1170 */ 1171 static void 1172 readlabel(int f) 1173 { 1174 if (rflag) { 1175 /* Get label directly from disk */ 1176 if (readlabel_direct(f) == 0) 1177 return; 1178 /* 1179 * There was no label on the disk. Get the fictious one 1180 * as a basis for initialisation. 1181 */ 1182 if (!Fflag && Iflag && (dk_ioctl(f, DIOCGDINFO, &lab) == 0 || 1183 dk_ioctl(f, DIOCGDEFLABEL, &lab) == 0)) 1184 return; 1185 } else { 1186 /* Get label from kernel. */ 1187 if (dk_ioctl(f, DIOCGDINFO, &lab) < 0) 1188 err(4, "ioctl DIOCGDINFO"); 1189 return; 1190 } 1191 1192 if (read_all == 2) 1193 /* We actually found one, and printed it... */ 1194 exit(0); 1195 errx(1, "could not read existing label"); 1196 } 1197 1198 /* 1199 * Reading the label from the disk is largely a case of 'hunt the label'. 1200 * and since different architectures default to different places there 1201 * could even be more than one label that contradict each other! 1202 * For now we look in the expected place, then search through likely 1203 * other locations. 1204 */ 1205 static struct disklabel * 1206 find_label(int f, u_int sector) 1207 { 1208 struct disklabel *disk_lp, hlp, tlp; 1209 int i; 1210 off_t offset; 1211 const char *is_deleted; 1212 1213 bootarea_len = pread(f, bootarea, sizeof bootarea, 1214 sector * (off_t)DEV_BSIZE); 1215 if (bootarea_len <= 0) { 1216 if (verbose) 1217 warn("failed to read bootarea from sector %u", sector); 1218 return NULL; 1219 } 1220 1221 if (verbose > 2) 1222 warnx("read sector %u len %d looking for label", 1223 sector, bootarea_len); 1224 1225 /* Check expected offset first */ 1226 for (offset = LABEL_OFFSET, i = -4;; offset = i += 4) { 1227 is_deleted = ""; 1228 if (i == LABEL_OFFSET) 1229 continue; 1230 disk_lp = (void *)(bootarea + offset); 1231 memcpy(&tlp, disk_lp, sizeof(tlp)); 1232 if ((char *)(disk_lp + 1) > bootarea + bootarea_len) 1233 break; 1234 if (tlp.d_magic2 != tlp.d_magic) 1235 continue; 1236 if (read_all && (tlp.d_magic == DISKMAGIC_DELETED || 1237 tlp.d_magic == DISKMAGIC_DELETED_REV)) { 1238 tlp.d_magic ^= ~0u; 1239 tlp.d_magic2 ^= ~0u; 1240 is_deleted = "deleted "; 1241 } 1242 if (target32toh(tlp.d_magic) != DISKMAGIC) { 1243 /* XXX: Do something about byte-swapped labels ? */ 1244 if (target32toh(tlp.d_magic) == DISKMAGIC_REV && 1245 target32toh(tlp.d_magic2) == DISKMAGIC_REV) 1246 warnx("ignoring %sbyteswapped label" 1247 " at offset %jd from sector %u", 1248 is_deleted, (intmax_t)offset, sector); 1249 continue; 1250 } 1251 if (target16toh(tlp.d_npartitions) > maxpartitions || 1252 dkcksum_target(&tlp) != 0) { 1253 if (verbose > 0) 1254 warnx("corrupt label found at offset %jd in " 1255 "sector %u", (intmax_t)offset, sector); 1256 continue; 1257 } 1258 if (verbose > 1) 1259 warnx("%slabel found at offset %jd from sector %u", 1260 is_deleted, (intmax_t)offset, sector); 1261 if (!read_all) 1262 return disk_lp; 1263 1264 /* To print all the labels we have to do it here */ 1265 /* XXX: maybe we should compare them? */ 1266 targettohlabel(&hlp, &tlp); 1267 printf("# %ssector %u offset %jd bytes\n", 1268 is_deleted, sector, (intmax_t)offset); 1269 if (tflag) 1270 makedisktab(stdout, &hlp); 1271 else { 1272 showinfo(stdout, &hlp, specname); 1273 showpartitions(stdout, &hlp, Cflag); 1274 } 1275 checklabel(&hlp); 1276 htotargetlabel(&tlp, &hlp); 1277 memcpy(disk_lp, &tlp, sizeof(tlp)); 1278 /* Remember we've found a label */ 1279 read_all = 2; 1280 } 1281 return NULL; 1282 } 1283 1284 static void 1285 write_bootarea(int f, u_int sector) 1286 { 1287 int wlen; 1288 1289 if (bootarea_len <= 0) 1290 errx(1, "attempting to write after failed read"); 1291 1292 #ifdef ALPHA_BOOTBLOCK_CKSUM 1293 /* 1294 * The Alpha requires that the boot block be checksummed. 1295 * <sys/bootblock.h> provides a macro to do it. 1296 */ 1297 if (sector == 0) { 1298 struct alpha_boot_block *bb; 1299 1300 bb = (struct alpha_boot_block *)(void *)bootarea; 1301 bb->bb_cksum = 0; 1302 ALPHA_BOOT_BLOCK_CKSUM(bb, &bb->bb_cksum); 1303 } 1304 #endif /* ALPHA_BOOTBLOCK_CKSUM */ 1305 1306 wlen = pwrite(f, bootarea, bootarea_len, sector * (off_t)DEV_BSIZE); 1307 if (wlen == bootarea_len) 1308 return; 1309 if (wlen == -1) 1310 err(1, "disklabel write (sector %u) size %d failed", 1311 sector, bootarea_len); 1312 errx(1, "disklabel write (sector %u) size %d truncated to %d", 1313 sector, bootarea_len, wlen); 1314 } 1315 1316 static int 1317 update_label(int f, u_int label_sector, u_int label_offset) 1318 { 1319 struct disklabel *disk_lp; 1320 1321 disk_lp = find_label(f, label_sector); 1322 1323 if (disk_lp && Dflag) { 1324 /* Invalidate the existing label */ 1325 disk_lp->d_magic ^= ~0u; 1326 disk_lp->d_magic2 ^= ~0u; 1327 if (Dflag == 2) 1328 write_bootarea(f, label_sector); 1329 /* Force label to default location */ 1330 disk_lp = NULL; 1331 } 1332 1333 if (Dflag == 2) 1334 /* We are just deleting the label */ 1335 return 0; 1336 1337 if (disk_lp == NULL) { 1338 if (label_offset == ~0u) 1339 return 0; 1340 /* Nothing on the disk - we need to add it */ 1341 disk_lp = (void *)(bootarea + label_offset); 1342 if ((char *)(disk_lp + 1) > bootarea + bootarea_len) 1343 errx(1, "no space in bootarea (sector %u) " 1344 "to create label", label_sector); 1345 } 1346 1347 htotargetlabel(disk_lp, &lab); 1348 write_bootarea(f, label_sector); 1349 return 1; 1350 } 1351 1352 static void 1353 writelabel_direct(int f) 1354 { 1355 u_int label_sector; 1356 int written = 0; 1357 int rval; 1358 1359 label_sector = get_filecore_partition(f); 1360 if (label_sector != 0) 1361 /* The offset needs to be that from the acorn ports... */ 1362 written = update_label(f, label_sector, DEV_BSIZE); 1363 1364 rval = process_mbr(f, writelabel_mbr); 1365 1366 if (rval == 2 || written) 1367 /* Don't add a label to sector 0, but update one if there */ 1368 update_label(f, 0, ~0u); 1369 else 1370 update_label(f, 0, LABEL_OFFSET); 1371 } 1372 1373 static int 1374 readlabel_direct(int f) 1375 { 1376 struct disklabel *disk_lp; 1377 u_int filecore_partition_offset; 1378 1379 filecore_partition_offset = get_filecore_partition(f); 1380 if (filecore_partition_offset != 0) { 1381 disk_lp = find_label(f, filecore_partition_offset); 1382 if (disk_lp != NULL) { 1383 targettohlabel(&lab, disk_lp); 1384 return 0; 1385 } 1386 } 1387 1388 if (labelusesmbr && process_mbr(f, readlabel_mbr) == 0) 1389 return 0; 1390 1391 disk_lp = find_label(f, 0); 1392 if (disk_lp != NULL) { 1393 targettohlabel(&lab, disk_lp); 1394 return 0; 1395 } 1396 1397 if (!labelusesmbr && process_mbr(f, readlabel_mbr) == 0) 1398 return 0; 1399 1400 return 1; 1401 } 1402 1403 static void 1404 makedisktab(FILE *f, struct disklabel *lp) 1405 { 1406 int i; 1407 const char *did; 1408 struct partition *pp; 1409 1410 did = "\\\n\t:"; 1411 (void) fprintf(f, "%.*s|Automatically generated label:\\\n\t:dt=", 1412 (int) sizeof(lp->d_typename), lp->d_typename); 1413 if ((unsigned) lp->d_type < DKMAXTYPES) 1414 (void) fprintf(f, "%s:", dktypenames[lp->d_type]); 1415 else 1416 (void) fprintf(f, "unknown%" PRIu16 ":", lp->d_type); 1417 1418 (void) fprintf(f, "se#%" PRIu32 ":", lp->d_secsize); 1419 (void) fprintf(f, "ns#%" PRIu32 ":", lp->d_nsectors); 1420 (void) fprintf(f, "nt#%" PRIu32 ":", lp->d_ntracks); 1421 (void) fprintf(f, "sc#%" PRIu32 ":", lp->d_secpercyl); 1422 (void) fprintf(f, "nc#%" PRIu32 ":", lp->d_ncylinders); 1423 1424 if ((lp->d_secpercyl * lp->d_ncylinders) != lp->d_secperunit) { 1425 (void) fprintf(f, "%ssu#%" PRIu32 ":", did, lp->d_secperunit); 1426 did = ""; 1427 } 1428 if (lp->d_rpm != 3600) { 1429 (void) fprintf(f, "%srm#%" PRIu16 ":", did, lp->d_rpm); 1430 did = ""; 1431 } 1432 if (lp->d_interleave != 1) { 1433 (void) fprintf(f, "%sil#%" PRIu16 ":", did, lp->d_interleave); 1434 did = ""; 1435 } 1436 if (lp->d_trackskew != 0) { 1437 (void) fprintf(f, "%ssk#%" PRIu16 ":", did, lp->d_trackskew); 1438 did = ""; 1439 } 1440 if (lp->d_cylskew != 0) { 1441 (void) fprintf(f, "%scs#%" PRIu16 ":", did, lp->d_cylskew); 1442 did = ""; 1443 } 1444 if (lp->d_headswitch != 0) { 1445 (void) fprintf(f, "%shs#%" PRIu32 ":", did, lp->d_headswitch); 1446 did = ""; 1447 } 1448 if (lp->d_trkseek != 0) { 1449 (void) fprintf(f, "%sts#%" PRIu32 ":", did, lp->d_trkseek); 1450 did = ""; 1451 } 1452 #ifdef notyet 1453 (void) fprintf(f, "drivedata: "); 1454 for (i = NDDATA - 1; i >= 0; i--) 1455 if (lp->d_drivedata[i]) 1456 break; 1457 if (i < 0) 1458 i = 0; 1459 for (j = 0; j <= i; j++) 1460 (void) fprintf(f, "%" PRIu32 " ", lp->d_drivedata[j]); 1461 #endif /* notyet */ 1462 pp = lp->d_partitions; 1463 for (i = 0; i < lp->d_npartitions; i++, pp++) { 1464 if (pp->p_size) { 1465 char c = 'a' + i; 1466 (void) fprintf(f, "\\\n\t:"); 1467 (void) fprintf(f, "p%c#%" PRIu32 ":", c, pp->p_size); 1468 (void) fprintf(f, "o%c#%" PRIu32 ":", c, pp->p_offset); 1469 if (pp->p_fstype != FS_UNUSED) { 1470 if ((unsigned) pp->p_fstype < FSMAXTYPES) 1471 (void) fprintf(f, "t%c=%s:", c, 1472 fstypenames[pp->p_fstype]); 1473 else 1474 (void) fprintf(f, 1475 "t%c=unknown%" PRIu8 ":", 1476 c, pp->p_fstype); 1477 } 1478 switch (pp->p_fstype) { 1479 1480 case FS_UNUSED: 1481 break; 1482 1483 case FS_BSDFFS: 1484 case FS_BSDLFS: 1485 case FS_EX2FS: 1486 case FS_ADOS: 1487 case FS_APPLEUFS: 1488 (void) fprintf(f, "b%c#%" PRIu64 ":", c, 1489 (uint64_t)pp->p_fsize * pp->p_frag); 1490 (void) fprintf(f, "f%c#%" PRIu32 ":", c, 1491 pp->p_fsize); 1492 break; 1493 default: 1494 break; 1495 } 1496 } 1497 } 1498 (void) fprintf(f, "\n"); 1499 (void) fflush(f); 1500 } 1501 1502 static int 1503 edit(int f) 1504 { 1505 const char *tmpdir; 1506 char tmpfil[MAXPATHLEN]; 1507 int first, ch, fd; 1508 int get_ok; 1509 FILE *fp; 1510 1511 if ((tmpdir = getenv("TMPDIR")) == NULL) 1512 tmpdir = _PATH_TMP; 1513 (void)snprintf(tmpfil, sizeof(tmpfil), "%s/%s", tmpdir, TMPFILE); 1514 if ((fd = mkstemp(tmpfil)) == -1 || (fp = fdopen(fd, "w")) == NULL) { 1515 warn("%s", tmpfil); 1516 return (1); 1517 } 1518 (void)fchmod(fd, 0600); 1519 showinfo(fp, &lab, specname); 1520 showpartitions(fp, &lab, Cflag); 1521 (void) fclose(fp); 1522 for (;;) { 1523 if (!editit(tmpfil)) 1524 break; 1525 fp = fopen(tmpfil, "r"); 1526 if (fp == NULL) { 1527 warn("%s", tmpfil); 1528 break; 1529 } 1530 (void) memset(&lab, 0, sizeof(lab)); 1531 get_ok = getasciilabel(fp, &lab); 1532 fclose(fp); 1533 if (get_ok && write_label(f) == 0) { 1534 (void) unlink(tmpfil); 1535 return (0); 1536 } 1537 (void) printf("re-edit the label? [y]: "); 1538 (void) fflush(stdout); 1539 first = ch = getchar(); 1540 while (ch != '\n' && ch != EOF) 1541 ch = getchar(); 1542 if (first == 'n' || first == 'N') 1543 break; 1544 } 1545 (void)unlink(tmpfil); 1546 return (1); 1547 } 1548 1549 static int 1550 editit(const char *tmpfil) 1551 { 1552 int pid, xpid; 1553 int status; 1554 sigset_t nsigset, osigset; 1555 1556 sigemptyset(&nsigset); 1557 sigaddset(&nsigset, SIGINT); 1558 sigaddset(&nsigset, SIGQUIT); 1559 sigaddset(&nsigset, SIGHUP); 1560 sigprocmask(SIG_BLOCK, &nsigset, &osigset); 1561 while ((pid = fork()) < 0) { 1562 if (errno != EAGAIN) { 1563 sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); 1564 warn("fork"); 1565 return (0); 1566 } 1567 sleep(1); 1568 } 1569 if (pid == 0) { 1570 const char *ed; 1571 char *buf; 1572 int retval; 1573 1574 sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); 1575 setgid(getgid()); 1576 setuid(getuid()); 1577 if ((ed = getenv("EDITOR")) == (char *)0) 1578 ed = DEFEDITOR; 1579 /* 1580 * Jump through a few extra hoops in case someone's editor 1581 * is "editor arg1 arg2". 1582 */ 1583 asprintf(&buf, "%s %s", ed, tmpfil); 1584 if (!buf) 1585 err(1, "malloc"); 1586 retval = execlp(_PATH_BSHELL, _PATH_BSHELL, "-c", buf, NULL); 1587 if (retval == -1) 1588 perror(ed); 1589 exit(retval); 1590 } 1591 while ((xpid = wait(&status)) >= 0) 1592 if (xpid == pid) 1593 break; 1594 sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); 1595 return (!status); 1596 } 1597 1598 static char * 1599 skip(char *cp) 1600 { 1601 1602 cp += strspn(cp, " \t"); 1603 if (*cp == '\0') 1604 return (NULL); 1605 return (cp); 1606 } 1607 1608 static char * 1609 word(char *cp) 1610 { 1611 1612 if (cp == NULL || *cp == '\0') 1613 return (NULL); 1614 1615 cp += strcspn(cp, " \t"); 1616 if (*cp == '\0') 1617 return (NULL); 1618 *cp++ = '\0'; 1619 cp += strspn(cp, " \t"); 1620 if (*cp == '\0') 1621 return (NULL); 1622 return (cp); 1623 } 1624 1625 #define _CHECKLINE \ 1626 if (tp == NULL || *tp == '\0') { \ 1627 warnx("line %d: too few fields", lineno); \ 1628 errors++; \ 1629 break; \ 1630 } 1631 1632 #define __CHECKLINE \ 1633 if (*tp == NULL || **tp == '\0') { \ 1634 warnx("line %d: too few fields", lineno); \ 1635 *tp = _error_; \ 1636 return 0; \ 1637 } 1638 1639 static char _error_[] = ""; 1640 #define NXTNUM(n) if ((n = nxtnum(&tp, lineno),0) + tp != _error_) \ 1641 ; else goto error 1642 #define NXTXNUM(n) if ((n = nxtxnum(&tp, lp, lineno),0) + tp != _error_) \ 1643 ; else goto error 1644 1645 static unsigned long 1646 nxtnum(char **tp, int lineno) 1647 { 1648 char *cp; 1649 unsigned long v; 1650 1651 __CHECKLINE 1652 if (getulong(*tp, '\0', &cp, &v, UINT32_MAX) != 0) { 1653 warnx("line %d: syntax error", lineno); 1654 *tp = _error_; 1655 return 0; 1656 } 1657 *tp = cp; 1658 return v; 1659 } 1660 1661 static unsigned long 1662 nxtxnum(char **tp, struct disklabel *lp, int lineno) 1663 { 1664 char *cp, *ncp; 1665 unsigned long n, v; 1666 1667 __CHECKLINE 1668 cp = *tp; 1669 if (getulong(cp, '/', &ncp, &n, UINT32_MAX) != 0) 1670 goto bad; 1671 1672 if (*ncp == '/') { 1673 n *= lp->d_secpercyl; 1674 cp = ncp + 1; 1675 if (getulong(cp, '/', &ncp, &v, UINT32_MAX) != 0) 1676 goto bad; 1677 n += v * lp->d_nsectors; 1678 cp = ncp + 1; 1679 if (getulong(cp, '\0', &ncp, &v, UINT32_MAX) != 0) 1680 goto bad; 1681 n += v; 1682 } 1683 *tp = ncp; 1684 return n; 1685 bad: 1686 warnx("line %d: invalid format", lineno); 1687 *tp = _error_; 1688 return 0; 1689 } 1690 1691 /* 1692 * Read an ascii label in from fd f, 1693 * in the same format as that put out by showinfo() and showpartitions(), 1694 * and fill in lp. 1695 */ 1696 static int 1697 getasciilabel(FILE *f, struct disklabel *lp) 1698 { 1699 const char *const *cpp, *s; 1700 struct partition *pp; 1701 char *cp, *tp, line[BUFSIZ], tbuf[15]; 1702 int lineno, errors; 1703 unsigned long v; 1704 unsigned int part; 1705 1706 lineno = 0; 1707 errors = 0; 1708 lp->d_bbsize = BBSIZE; /* XXX */ 1709 lp->d_sbsize = SBLOCKSIZE; /* XXX */ 1710 while (fgets(line, sizeof(line) - 1, f)) { 1711 lineno++; 1712 if ((cp = strpbrk(line, "#\r\n")) != NULL) 1713 *cp = '\0'; 1714 cp = skip(line); 1715 if (cp == NULL) /* blank line or comment line */ 1716 continue; 1717 tp = strchr(cp, ':'); /* everything has a colon in it */ 1718 if (tp == NULL) { 1719 warnx("line %d: syntax error", lineno); 1720 errors++; 1721 continue; 1722 } 1723 *tp++ = '\0', tp = skip(tp); 1724 if (!strcmp(cp, "type")) { 1725 if (tp == NULL) { 1726 strlcpy(tbuf, "unknown", sizeof(tbuf)); 1727 tp = tbuf; 1728 } 1729 cpp = dktypenames; 1730 for (; cpp < &dktypenames[DKMAXTYPES]; cpp++) 1731 if ((s = *cpp) && !strcasecmp(s, tp)) { 1732 lp->d_type = cpp - dktypenames; 1733 goto next; 1734 } 1735 if (GETNUM16(tp, &v) != 0) { 1736 warnx("line %d: syntax error", lineno); 1737 errors++; 1738 continue; 1739 } 1740 if (v >= DKMAXTYPES) 1741 warnx("line %d: warning, unknown disk type: %s", 1742 lineno, tp); 1743 lp->d_type = v; 1744 continue; 1745 } 1746 if (!strcmp(cp, "flags")) { 1747 for (v = 0; (cp = tp) && *cp != '\0';) { 1748 tp = word(cp); 1749 if (!strcasecmp(cp, "removable")) 1750 v |= D_REMOVABLE; 1751 else if (!strcasecmp(cp, "ecc")) 1752 v |= D_ECC; 1753 else if (!strcasecmp(cp, "badsect")) 1754 v |= D_BADSECT; 1755 else { 1756 warnx("line %d: bad flag: %s", 1757 lineno, cp); 1758 errors++; 1759 } 1760 } 1761 lp->d_flags = v; 1762 continue; 1763 } 1764 if (!strcmp(cp, "drivedata")) { 1765 int i; 1766 1767 for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) { 1768 if (GETNUM32(cp, &v) != 0) { 1769 warnx("line %d: bad drive data", 1770 lineno); 1771 errors++; 1772 } else 1773 lp->d_drivedata[i] = v; 1774 i++; 1775 tp = word(cp); 1776 } 1777 continue; 1778 } 1779 if (sscanf(cp, "%lu partitions", &v) == 1) { 1780 if (v == 0 || v > maxpartitions) { 1781 warnx("line %d: bad # of partitions", lineno); 1782 lp->d_npartitions = maxpartitions; 1783 errors++; 1784 } else 1785 lp->d_npartitions = v; 1786 continue; 1787 } 1788 if (tp == NULL) { 1789 tbuf[0] = '\0'; 1790 tp = tbuf; 1791 } 1792 if (!strcmp(cp, "disk")) { 1793 strncpy(lp->d_typename, tp, sizeof(lp->d_typename)); 1794 continue; 1795 } 1796 if (!strcmp(cp, "label")) { 1797 strncpy(lp->d_packname, tp, sizeof(lp->d_packname)); 1798 continue; 1799 } 1800 if (!strcmp(cp, "bytes/sector")) { 1801 if (GETNUM32(tp, &v) != 0 || v <= 0 || (v % 512) != 0) { 1802 warnx("line %d: bad %s: %s", lineno, cp, tp); 1803 errors++; 1804 } else 1805 lp->d_secsize = v; 1806 continue; 1807 } 1808 if (!strcmp(cp, "sectors/track")) { 1809 if (GETNUM32(tp, &v) != 0) { 1810 warnx("line %d: bad %s: %s", lineno, cp, tp); 1811 errors++; 1812 } else 1813 lp->d_nsectors = v; 1814 continue; 1815 } 1816 if (!strcmp(cp, "sectors/cylinder")) { 1817 if (GETNUM32(tp, &v) != 0) { 1818 warnx("line %d: bad %s: %s", lineno, cp, tp); 1819 errors++; 1820 } else 1821 lp->d_secpercyl = v; 1822 continue; 1823 } 1824 if (!strcmp(cp, "tracks/cylinder")) { 1825 if (GETNUM32(tp, &v) != 0) { 1826 warnx("line %d: bad %s: %s", lineno, cp, tp); 1827 errors++; 1828 } else 1829 lp->d_ntracks = v; 1830 continue; 1831 } 1832 if (!strcmp(cp, "cylinders")) { 1833 if (GETNUM32(tp, &v) != 0) { 1834 warnx("line %d: bad %s: %s", lineno, cp, tp); 1835 errors++; 1836 } else 1837 lp->d_ncylinders = v; 1838 continue; 1839 } 1840 if (!strcmp(cp, "total sectors") || 1841 !strcmp(cp, "sectors/unit")) { 1842 if (GETNUM32(tp, &v) != 0) { 1843 warnx("line %d: bad %s: %s", lineno, cp, tp); 1844 errors++; 1845 } else 1846 lp->d_secperunit = v; 1847 continue; 1848 } 1849 if (!strcmp(cp, "rpm")) { 1850 if (GETNUM16(tp, &v) != 0) { 1851 warnx("line %d: bad %s: %s", lineno, cp, tp); 1852 errors++; 1853 } else 1854 lp->d_rpm = v; 1855 continue; 1856 } 1857 if (!strcmp(cp, "interleave")) { 1858 if (GETNUM16(tp, &v) != 0) { 1859 warnx("line %d: bad %s: %s", lineno, cp, tp); 1860 errors++; 1861 } else 1862 lp->d_interleave = v; 1863 continue; 1864 } 1865 if (!strcmp(cp, "trackskew")) { 1866 if (GETNUM16(tp, &v) != 0) { 1867 warnx("line %d: bad %s: %s", lineno, cp, tp); 1868 errors++; 1869 } else 1870 lp->d_trackskew = v; 1871 continue; 1872 } 1873 if (!strcmp(cp, "cylinderskew")) { 1874 if (GETNUM16(tp, &v) != 0) { 1875 warnx("line %d: bad %s: %s", lineno, cp, tp); 1876 errors++; 1877 } else 1878 lp->d_cylskew = v; 1879 continue; 1880 } 1881 if (!strcmp(cp, "headswitch")) { 1882 if (GETNUM32(tp, &v) != 0) { 1883 warnx("line %d: bad %s: %s", lineno, cp, tp); 1884 errors++; 1885 } else 1886 lp->d_headswitch = v; 1887 continue; 1888 } 1889 if (!strcmp(cp, "track-to-track seek")) { 1890 if (GETNUM32(tp, &v) != 0) { 1891 warnx("line %d: bad %s: %s", lineno, cp, tp); 1892 errors++; 1893 } else 1894 lp->d_trkseek = v; 1895 continue; 1896 } 1897 if ('a' > *cp || *cp > 'z' || cp[1] != '\0') { 1898 warnx("line %d: unknown field: %s", lineno, cp); 1899 errors++; 1900 continue; 1901 } 1902 1903 /* We have a partition entry */ 1904 part = *cp - 'a'; 1905 1906 if (part >= maxpartitions) { 1907 warnx("line %d: bad partition name: %s", lineno, cp); 1908 errors++; 1909 continue; 1910 } 1911 if (part >= __arraycount(lp->d_partitions)) { 1912 warnx("line %d: partition id %s, >= %zu", lineno, 1913 cp, __arraycount(lp->d_partitions)); 1914 errors++; 1915 continue; 1916 } 1917 pp = &lp->d_partitions[part]; 1918 1919 NXTXNUM(pp->p_size); 1920 NXTXNUM(pp->p_offset); 1921 /* can't use word() here because of blanks in fstypenames[] */ 1922 tp += strspn(tp, " \t"); 1923 _CHECKLINE 1924 cp = tp; 1925 cpp = fstypenames; 1926 for (; cpp < &fstypenames[FSMAXTYPES]; cpp++) { 1927 s = *cpp; 1928 if (s == NULL || 1929 (cp[strlen(s)] != ' ' && 1930 cp[strlen(s)] != '\t' && 1931 cp[strlen(s)] != '\0')) 1932 continue; 1933 if (!memcmp(s, cp, strlen(s))) { 1934 pp->p_fstype = cpp - fstypenames; 1935 tp += strlen(s); 1936 if (*tp == '\0') 1937 tp = NULL; 1938 else { 1939 tp += strspn(tp, " \t"); 1940 if (*tp == '\0') 1941 tp = NULL; 1942 } 1943 goto gottype; 1944 } 1945 } 1946 tp = word(cp); 1947 if (isdigit(*cp & 0xff)) { 1948 if (GETNUM8(cp, &v) != 0) { 1949 warnx("line %d: syntax error", lineno); 1950 errors++; 1951 } 1952 } else 1953 v = FSMAXTYPES; 1954 if ((unsigned)v >= FSMAXTYPES) { 1955 warnx("line %d: warning, unknown file system type: %s", 1956 lineno, cp); 1957 warnx("tip: use -l to see all valid file system " 1958 "types"); 1959 v = FS_UNUSED; 1960 } 1961 pp->p_fstype = v; 1962 gottype: 1963 switch (pp->p_fstype) { 1964 1965 case FS_UNUSED: /* XXX */ 1966 NXTNUM(pp->p_fsize); 1967 if (pp->p_fsize == 0) 1968 break; 1969 NXTNUM(v); 1970 pp->p_frag = v / pp->p_fsize; 1971 break; 1972 1973 case FS_BSDFFS: 1974 case FS_ADOS: 1975 case FS_APPLEUFS: 1976 NXTNUM(pp->p_fsize); 1977 if (pp->p_fsize == 0) 1978 break; 1979 NXTNUM(v); 1980 pp->p_frag = v / pp->p_fsize; 1981 NXTNUM(pp->p_cpg); 1982 break; 1983 case FS_BSDLFS: 1984 NXTNUM(pp->p_fsize); 1985 if (pp->p_fsize == 0) 1986 break; 1987 NXTNUM(v); 1988 pp->p_frag = v / pp->p_fsize; 1989 NXTNUM(pp->p_sgs); 1990 break; 1991 case FS_EX2FS: 1992 NXTNUM(pp->p_fsize); 1993 if (pp->p_fsize == 0) 1994 break; 1995 NXTNUM(v); 1996 pp->p_frag = v / pp->p_fsize; 1997 break; 1998 case FS_ISO9660: 1999 NXTNUM(pp->p_cdsession); 2000 break; 2001 default: 2002 break; 2003 } 2004 continue; 2005 error: 2006 errors++; 2007 next: 2008 ; 2009 } 2010 errors += checklabel(lp); 2011 return (errors == 0); 2012 } 2013 2014 /* 2015 * Check disklabel for errors and fill in 2016 * derived fields according to supplied values. 2017 */ 2018 int 2019 checklabel(struct disklabel *lp) 2020 { 2021 struct partition *pp, *qp; 2022 int i, j, errors; 2023 char part; 2024 2025 errors = 0; 2026 if (lp->d_secsize == 0) { 2027 warnx("sector size %" PRIu32, lp->d_secsize); 2028 return (1); 2029 } 2030 if (lp->d_nsectors == 0) { 2031 warnx("sectors/track %" PRIu32, lp->d_nsectors); 2032 return (1); 2033 } 2034 if (lp->d_ntracks == 0) { 2035 warnx("tracks/cylinder %" PRIu32, lp->d_ntracks); 2036 return (1); 2037 } 2038 if (lp->d_ncylinders == 0) { 2039 warnx("cylinders/unit %" PRIu32, lp->d_ncylinders); 2040 errors++; 2041 } 2042 if (lp->d_rpm == 0) 2043 warnx("warning, revolutions/minute %" PRIu16, lp->d_rpm); 2044 if (lp->d_secpercyl == 0) 2045 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 2046 if (lp->d_secperunit == 0) 2047 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2048 if (lp->d_bbsize == 0) { 2049 warnx("boot block size %" PRIu32, lp->d_bbsize); 2050 errors++; 2051 } else if (lp->d_bbsize % lp->d_secsize) 2052 warnx("warning, boot block size %% sector-size != 0"); 2053 if (lp->d_sbsize == 0) { 2054 warnx("super block size %" PRIu32, lp->d_sbsize); 2055 errors++; 2056 } else if (lp->d_sbsize % lp->d_secsize) 2057 warnx("warning, super block size %% sector-size != 0"); 2058 if (lp->d_npartitions > maxpartitions) 2059 warnx("warning, number of partitions (%" PRIu16 ") > " 2060 "MAXPARTITIONS (%d)", 2061 lp->d_npartitions, maxpartitions); 2062 else 2063 for (i = maxpartitions - 1; i >= lp->d_npartitions; i--) { 2064 part = 'a' + i; 2065 pp = &lp->d_partitions[i]; 2066 if (pp->p_size || pp->p_offset) { 2067 warnx("warning, partition %c increased " 2068 "number of partitions from %" PRIu16 2069 " to %d", 2070 part, lp->d_npartitions, i + 1); 2071 lp->d_npartitions = i + 1; 2072 break; 2073 } 2074 } 2075 for (i = 0; i < lp->d_npartitions; i++) { 2076 part = 'a' + i; 2077 pp = &lp->d_partitions[i]; 2078 if (pp->p_size == 0 && pp->p_offset != 0) 2079 warnx("warning, partition %c: size 0, but " 2080 "offset %" PRIu32, 2081 part, pp->p_offset); 2082 #ifdef STRICT_CYLINDER_ALIGNMENT 2083 if (pp->p_offset % lp->d_secpercyl) { 2084 warnx("warning, partition %c:" 2085 " not starting on cylinder boundary", 2086 part); 2087 errors++; 2088 } 2089 #endif /* STRICT_CYLINDER_ALIGNMENT */ 2090 if (pp->p_offset > lp->d_secperunit) { 2091 warnx("partition %c: offset past end of unit", part); 2092 errors++; 2093 } 2094 if (pp->p_offset + pp->p_size > lp->d_secperunit) { 2095 warnx("partition %c: partition extends" 2096 " past end of unit", 2097 part); 2098 errors++; 2099 } 2100 if (pp->p_fstype != FS_UNUSED) 2101 for (j = i + 1; j < lp->d_npartitions; j++) { 2102 qp = &lp->d_partitions[j]; 2103 if (qp->p_fstype == FS_UNUSED) 2104 continue; 2105 if (pp->p_offset < qp->p_offset + qp->p_size && 2106 qp->p_offset < pp->p_offset + pp->p_size) 2107 warnx("partitions %c and %c overlap", 2108 part, 'a' + j); 2109 } 2110 } 2111 return (errors); 2112 } 2113 2114 static void 2115 usage(void) 2116 { 2117 static const struct { 2118 const char *name; 2119 const char *expn; 2120 } usages[] = { 2121 { "[-ABCFMrtv] disk", "(to read label)" }, 2122 { "-w [-BDFMrv] [-f disktab] disk disktype [packid]", "(to write label)" }, 2123 { "-e [-BCDFMIrv] disk", "(to edit label)" }, 2124 #if !defined(NO_INTERACT) 2125 { "-i [-BDFMIrv] disk", "(to create a label interactively)" }, 2126 #endif 2127 { "-D [-v] disk", "(to delete existing label(s))" }, 2128 { "-R [-BDFMrv] disk protofile", "(to restore label)" }, 2129 { "[-NW] disk", "(to write disable/enable label)" }, 2130 { "-l", "(to show all known file system types)" }, 2131 { NULL, NULL } 2132 }; 2133 int i; 2134 const char *pn = getprogname(); 2135 const char *t = "usage:"; 2136 2137 for (i = 0; usages[i].name != NULL; i++) { 2138 (void)fprintf(stderr, "%s %s %s\n\t%s\n", 2139 t, pn, usages[i].name, usages[i].expn); 2140 t = "or"; 2141 } 2142 exit(1); 2143 } 2144 2145 static int 2146 getulong(const char *str, char sep, char **epp, unsigned long *ul, 2147 unsigned long max) 2148 { 2149 char *ep; 2150 2151 if (epp == NULL) 2152 epp = &ep; 2153 2154 *ul = strtoul(str, epp, 10); 2155 2156 if ((*ul == ULONG_MAX && errno == ERANGE) || *ul > max) 2157 return ERANGE; 2158 2159 if (*str == '\0' || (**epp != '\0' && **epp != sep && 2160 !isspace((unsigned char)**epp))) 2161 return EFTYPE; 2162 2163 return 0; 2164 } 2165 2166 /* 2167 * This is a wrapper over the standard strcmp function to be used with 2168 * qsort on an array of pointers to strings. 2169 */ 2170 static int 2171 qsort_strcmp(const void *v1, const void *v2) 2172 { 2173 const char *const *sp1 = (const char *const *)v1; 2174 const char *const *sp2 = (const char *const *)v2; 2175 2176 return strcmp(*sp1, *sp2); 2177 } 2178 2179 /* 2180 * Prints all know file system types for a partition. 2181 * Returns 1 on success, 0 on failure. 2182 */ 2183 int 2184 list_fs_types(void) 2185 { 2186 int ret; 2187 size_t nelems; 2188 2189 nelems = 0; 2190 { 2191 const char *const *namep; 2192 2193 namep = fstypenames; 2194 while (*namep++ != NULL) 2195 nelems++; 2196 } 2197 2198 ret = 1; 2199 if (nelems > 0) { 2200 const char **list; 2201 size_t i; 2202 2203 list = (const char **)malloc(sizeof(char *) * nelems); 2204 if (list == NULL) { 2205 warnx("sorry, could not allocate memory for list"); 2206 ret = 0; 2207 } else { 2208 for (i = 0; i < nelems; i++) 2209 list[i] = fstypenames[i]; 2210 2211 qsort(list, nelems, sizeof(char *), qsort_strcmp); 2212 2213 for (i = 0; i < nelems; i++) 2214 (void)printf("%s\n", list[i]); 2215 2216 free(list); 2217 } 2218 } 2219 2220 return ret; 2221 } 2222 2223 #ifndef HAVE_NBTOOL_CONFIG_H 2224 int 2225 dk_ioctl(int f, u_long cmd, void *arg) 2226 { 2227 #if !defined(NATIVELABEL_ONLY) 2228 if (!native_p) { 2229 errno = ENOTTY; 2230 return -1; 2231 } 2232 #endif 2233 return ioctl(f, cmd, arg); 2234 } 2235 #endif 2236
Indexes created Tue Sep 23 02:09:52 GMT 2025