1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 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 * 4. Neither the name of the University 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef lint 36 #if 0 37 static char sccsid[] = "@(#)tape.c 8.9 (Berkeley) 5/1/95"; 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 #include <sys/param.h> 45 #include <sys/file.h> 46 #include <sys/mtio.h> 47 #include <sys/stat.h> 48 #include <sys/time.h> 49 #include <sys/extattr.h> 50 #include <sys/acl.h> 51 52 #include <ufs/ufs/extattr.h> 53 #include <ufs/ufs/dinode.h> 54 #include <protocols/dumprestore.h> 55 56 #include <errno.h> 57 #include <limits.h> 58 #include <paths.h> 59 #include <setjmp.h> 60 #include <stdint.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <time.h> 65 #include <timeconv.h> 66 #include <unistd.h> 67 68 #include "restore.h" 69 #include "extern.h" 70 71 static long fssize = MAXBSIZE; 72 static int mt = -1; 73 static int pipein = 0; 74 static int pipecmdin = 0; 75 static FILE *popenfp = NULL; 76 static char *magtape; 77 static int blkcnt; 78 static int numtrec; 79 static char *tapebuf; 80 static union u_spcl endoftapemark; 81 static long byteslide = 0; 82 static long blksread; /* blocks read since last header */ 83 static int64_t tapeaddr = 0; /* current TP_BSIZE tape record */ 84 static long tapesread; 85 static jmp_buf restart; 86 static int gettingfile = 0; /* restart has a valid frame */ 87 static char *host = NULL; 88 static int readmapflag; 89 90 static int ofile; 91 static char *map; 92 static char lnkbuf[MAXPATHLEN + 1]; 93 static int pathlen; 94 95 int Bcvt; /* Swap Bytes */ 96 int oldinofmt; /* FreeBSD 1 inode format needs cvt */ 97 98 #define FLUSHTAPEBUF() blkcnt = ntrec + 1 99 100 char *namespace_names[] = EXTATTR_NAMESPACE_NAMES; 101 102 static void accthdr(struct s_spcl *); 103 static int checksum(int *); 104 static void findinode(struct s_spcl *); 105 static void findtapeblksize(void); 106 static char *setupextattr(int); 107 static void xtrattr(char *, long); 108 static void set_extattr_link(char *, void *, int); 109 static void set_extattr_fd(int, char *, void *, int); 110 static void skiphole(void (*)(char *, long), long *); 111 static int gethead(struct s_spcl *); 112 static void readtape(char *); 113 static void setdumpnum(void); 114 static u_long swabl(u_long); 115 static u_char *swablong(u_char *, int); 116 static u_char *swabshort(u_char *, int); 117 static void terminateinput(void); 118 static void xtrfile(char *, long); 119 static void xtrlnkfile(char *, long); 120 static void xtrlnkskip(char *, long); 121 static void xtrmap(char *, long); 122 static void xtrmapskip(char *, long); 123 static void xtrskip(char *, long); 124 125 /* 126 * Set up an input source 127 */ 128 void 129 setinput(char *source, int ispipecommand) 130 { 131 FLUSHTAPEBUF(); 132 if (bflag) 133 newtapebuf(ntrec); 134 else 135 newtapebuf(MAX(NTREC, HIGHDENSITYTREC)); 136 terminal = stdin; 137 138 if (ispipecommand) 139 pipecmdin++; 140 else 141 #ifdef RRESTORE 142 if (strchr(source, ':')) { 143 host = source; 144 source = strchr(host, ':'); 145 *source++ = '\0'; 146 if (rmthost(host) == 0) 147 done(1); 148 } else 149 #endif 150 if (strcmp(source, "-") == 0) { 151 /* 152 * Since input is coming from a pipe we must establish 153 * our own connection to the terminal. 154 */ 155 terminal = fopen(_PATH_TTY, "r"); 156 if (terminal == NULL) { 157 (void)fprintf(stderr, "cannot open %s: %s\n", 158 _PATH_TTY, strerror(errno)); 159 terminal = fopen(_PATH_DEVNULL, "r"); 160 if (terminal == NULL) { 161 (void)fprintf(stderr, "cannot open %s: %s\n", 162 _PATH_DEVNULL, strerror(errno)); 163 done(1); 164 } 165 } 166 pipein++; 167 } 168 /* no longer need or want root privileges */ 169 if (setuid(getuid()) != 0) { 170 fprintf(stderr, "setuid failed\n"); 171 done(1); 172 } 173 magtape = strdup(source); 174 if (magtape == NULL) { 175 fprintf(stderr, "Cannot allocate space for magtape buffer\n"); 176 done(1); 177 } 178 } 179 180 void 181 newtapebuf(long size) 182 { 183 static int tapebufsize = -1; 184 185 ntrec = size; 186 if (size <= tapebufsize) 187 return; 188 if (tapebuf != NULL) 189 free(tapebuf - TP_BSIZE); 190 tapebuf = malloc((size+1) * TP_BSIZE); 191 if (tapebuf == NULL) { 192 fprintf(stderr, "Cannot allocate space for tape buffer\n"); 193 done(1); 194 } 195 tapebuf += TP_BSIZE; 196 tapebufsize = size; 197 } 198 199 /* 200 * Verify that the tape drive can be accessed and 201 * that it actually is a dump tape. 202 */ 203 void 204 setup(void) 205 { 206 int i, j, *ip; 207 struct stat stbuf; 208 209 vprintf(stdout, "Verify tape and initialize maps\n"); 210 if (pipecmdin) { 211 if (setenv("RESTORE_VOLUME", "1", 1) == -1) { 212 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n", 213 strerror(errno)); 214 done(1); 215 } 216 popenfp = popen(magtape, "r"); 217 mt = popenfp ? fileno(popenfp) : -1; 218 } else 219 #ifdef RRESTORE 220 if (host) 221 mt = rmtopen(magtape, 0); 222 else 223 #endif 224 if (pipein) 225 mt = 0; 226 else 227 mt = open(magtape, O_RDONLY, 0); 228 if (mt < 0) { 229 fprintf(stderr, "%s: %s\n", magtape, strerror(errno)); 230 done(1); 231 } 232 volno = 1; 233 setdumpnum(); 234 FLUSHTAPEBUF(); 235 if (!pipein && !pipecmdin && !bflag) 236 findtapeblksize(); 237 if (gethead(&spcl) == FAIL) { 238 fprintf(stderr, "Tape is not a dump tape\n"); 239 done(1); 240 } 241 if (pipein) { 242 endoftapemark.s_spcl.c_magic = FS_UFS2_MAGIC; 243 endoftapemark.s_spcl.c_type = TS_END; 244 ip = (int *)&endoftapemark; 245 j = sizeof(union u_spcl) / sizeof(int); 246 i = 0; 247 do 248 i += *ip++; 249 while (--j); 250 endoftapemark.s_spcl.c_checksum = CHECKSUM - i; 251 } 252 if (vflag || command == 't') 253 printdumpinfo(); 254 dumptime = _time64_to_time(spcl.c_ddate); 255 dumpdate = _time64_to_time(spcl.c_date); 256 if (stat(".", &stbuf) < 0) { 257 fprintf(stderr, "cannot stat .: %s\n", strerror(errno)); 258 done(1); 259 } 260 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE ) 261 fssize = TP_BSIZE; 262 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE) 263 fssize = stbuf.st_blksize; 264 if (((TP_BSIZE - 1) & stbuf.st_blksize) != 0) { 265 fprintf(stderr, "Warning: filesystem with non-multiple-of-%d " 266 "blocksize (%d);\n", TP_BSIZE, stbuf.st_blksize); 267 fssize = roundup(fssize, TP_BSIZE); 268 fprintf(stderr, "\twriting using blocksize %ld\n", fssize); 269 } 270 if (spcl.c_volume != 1) { 271 fprintf(stderr, "Tape is not volume 1 of the dump\n"); 272 done(1); 273 } 274 if (gethead(&spcl) == FAIL) { 275 dprintf(stdout, "header read failed at %ld blocks\n", blksread); 276 panic("no header after volume mark!\n"); 277 } 278 findinode(&spcl); 279 if (spcl.c_type != TS_CLRI) { 280 fprintf(stderr, "Cannot find file removal list\n"); 281 done(1); 282 } 283 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1; 284 dprintf(stdout, "maxino = %ju\n", (uintmax_t)maxino); 285 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); 286 if (map == NULL) 287 panic("no memory for active inode map\n"); 288 usedinomap = map; 289 curfile.action = USING; 290 getfile(xtrmap, xtrmapskip, xtrmapskip); 291 if (spcl.c_type != TS_BITS) { 292 fprintf(stderr, "Cannot find file dump list\n"); 293 done(1); 294 } 295 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY)); 296 if (map == (char *)NULL) 297 panic("no memory for file dump list\n"); 298 dumpmap = map; 299 curfile.action = USING; 300 getfile(xtrmap, xtrmapskip, xtrmapskip); 301 /* 302 * If there may be whiteout entries on the tape, pretend that the 303 * whiteout inode exists, so that the whiteout entries can be 304 * extracted. 305 */ 306 SETINO(WINO, dumpmap); 307 /* 'r' restores don't call getvol() for tape 1, so mark it as read. */ 308 if (command == 'r') 309 tapesread = 1; 310 } 311 312 /* 313 * Prompt user to load a new dump volume. 314 * "Nextvol" is the next suggested volume to use. 315 * This suggested volume is enforced when doing full 316 * or incremental restores, but can be overridden by 317 * the user when only extracting a subset of the files. 318 */ 319 void 320 getvol(long nextvol) 321 { 322 int64_t prevtapea; 323 long i, newvol, savecnt; 324 union u_spcl tmpspcl; 325 # define tmpbuf tmpspcl.s_spcl 326 char buf[TP_BSIZE]; 327 328 if (nextvol == 1) { 329 tapesread = 0; 330 gettingfile = 0; 331 } 332 prevtapea = tapeaddr; 333 savecnt = blksread; 334 if (pipein) { 335 if (nextvol != 1) { 336 panic("Changing volumes on pipe input?\n"); 337 /* Avoid looping if we couldn't ask the user. */ 338 if (yflag || ferror(terminal) || feof(terminal)) 339 done(1); 340 } 341 if (volno == 1) 342 return; 343 newvol = 0; 344 goto gethdr; 345 } 346 again: 347 if (pipein) 348 done(1); /* pipes do not get a second chance */ 349 if (command == 'R' || command == 'r' || curfile.action != SKIP) 350 newvol = nextvol; 351 else 352 newvol = 0; 353 while (newvol <= 0) { 354 if (tapesread == 0) { 355 fprintf(stderr, "%s%s%s%s%s%s%s", 356 "You have not read any tapes yet.\n", 357 "If you are extracting just a few files,", 358 " start with the last volume\n", 359 "and work towards the first; restore", 360 " can quickly skip tapes that\n", 361 "have no further files to extract.", 362 " Otherwise, begin with volume 1.\n"); 363 } else { 364 fprintf(stderr, "You have read volumes"); 365 strcpy(buf, ": "); 366 for (i = 0; i < 32; i++) 367 if (tapesread & (1 << i)) { 368 fprintf(stderr, "%s%ld", buf, i + 1); 369 strcpy(buf, ", "); 370 } 371 fprintf(stderr, "\n"); 372 } 373 do { 374 fprintf(stderr, "Specify next volume #: "); 375 (void) fflush(stderr); 376 if (fgets(buf, BUFSIZ, terminal) == NULL) 377 done(1); 378 } while (buf[0] == '\n'); 379 newvol = atoi(buf); 380 if (newvol <= 0) { 381 fprintf(stderr, 382 "Volume numbers are positive numerics\n"); 383 } 384 } 385 if (newvol == volno) { 386 tapesread |= 1 << (volno - 1); 387 return; 388 } 389 closemt(); 390 fprintf(stderr, "Mount tape volume %ld\n", newvol); 391 fprintf(stderr, "Enter ``none'' if there are no more tapes\n"); 392 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape); 393 (void) fflush(stderr); 394 if (fgets(buf, BUFSIZ, terminal) == NULL) 395 done(1); 396 if (!strcmp(buf, "none\n")) { 397 terminateinput(); 398 return; 399 } 400 if (buf[0] != '\n') { 401 (void) strcpy(magtape, buf); 402 magtape[strlen(magtape) - 1] = '\0'; 403 } 404 if (pipecmdin) { 405 char volno[sizeof("2147483647")]; 406 407 (void)sprintf(volno, "%ld", newvol); 408 if (setenv("RESTORE_VOLUME", volno, 1) == -1) { 409 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n", 410 strerror(errno)); 411 done(1); 412 } 413 popenfp = popen(magtape, "r"); 414 mt = popenfp ? fileno(popenfp) : -1; 415 } else 416 #ifdef RRESTORE 417 if (host) 418 mt = rmtopen(magtape, 0); 419 else 420 #endif 421 mt = open(magtape, O_RDONLY, 0); 422 423 if (mt == -1) { 424 fprintf(stderr, "Cannot open %s\n", magtape); 425 volno = -1; 426 goto again; 427 } 428 gethdr: 429 volno = newvol; 430 setdumpnum(); 431 FLUSHTAPEBUF(); 432 if (gethead(&tmpbuf) == FAIL) { 433 dprintf(stdout, "header read failed at %ld blocks\n", blksread); 434 fprintf(stderr, "tape is not dump tape\n"); 435 volno = 0; 436 goto again; 437 } 438 if (tmpbuf.c_volume != volno) { 439 fprintf(stderr, "Wrong volume (%jd)\n", 440 (intmax_t)tmpbuf.c_volume); 441 volno = 0; 442 goto again; 443 } 444 if (_time64_to_time(tmpbuf.c_date) != dumpdate || 445 _time64_to_time(tmpbuf.c_ddate) != dumptime) { 446 time_t t = _time64_to_time(tmpbuf.c_date); 447 fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t)); 448 fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); 449 volno = 0; 450 goto again; 451 } 452 tapesread |= 1 << (volno - 1); 453 blksread = savecnt; 454 /* 455 * If continuing from the previous volume, skip over any 456 * blocks read already at the end of the previous volume. 457 * 458 * If coming to this volume at random, skip to the beginning 459 * of the next record. 460 */ 461 dprintf(stdout, "last rec %jd, tape starts with %jd\n", 462 (intmax_t)prevtapea, (intmax_t)tmpbuf.c_tapea); 463 if (tmpbuf.c_type == TS_TAPE) { 464 if (curfile.action != USING) { 465 /* 466 * XXX Dump incorrectly sets c_count to 1 in the 467 * volume header of the first tape, so ignore 468 * c_count when volno == 1. 469 */ 470 if (volno != 1) 471 for (i = tmpbuf.c_count; i > 0; i--) 472 readtape(buf); 473 } else if (tmpbuf.c_tapea <= prevtapea) { 474 /* 475 * Normally the value of c_tapea in the volume 476 * header is the record number of the header itself. 477 * However in the volume header following an EOT- 478 * terminated tape, it is the record number of the 479 * first continuation data block (dump bug?). 480 * 481 * The next record we want is `prevtapea + 1'. 482 */ 483 i = prevtapea + 1 - tmpbuf.c_tapea; 484 dprintf(stderr, "Skipping %ld duplicate record%s.\n", 485 i, i > 1 ? "s" : ""); 486 while (--i >= 0) 487 readtape(buf); 488 } 489 } 490 if (curfile.action == USING) { 491 if (volno == 1) 492 panic("active file into volume 1\n"); 493 return; 494 } 495 (void) gethead(&spcl); 496 findinode(&spcl); 497 if (gettingfile) { 498 gettingfile = 0; 499 longjmp(restart, 1); 500 } 501 } 502 503 /* 504 * Handle unexpected EOF. 505 */ 506 static void 507 terminateinput(void) 508 { 509 510 if (gettingfile && curfile.action == USING) { 511 printf("Warning: %s %s\n", 512 "End-of-input encountered while extracting", curfile.name); 513 } 514 curfile.name = "<name unknown>"; 515 curfile.action = UNKNOWN; 516 curfile.mode = 0; 517 curfile.ino = maxino; 518 if (gettingfile) { 519 gettingfile = 0; 520 longjmp(restart, 1); 521 } 522 } 523 524 /* 525 * handle multiple dumps per tape by skipping forward to the 526 * appropriate one. 527 */ 528 static void 529 setdumpnum(void) 530 { 531 struct mtop tcom; 532 533 if (dumpnum == 1 || volno != 1) 534 return; 535 if (pipein) { 536 fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); 537 done(1); 538 } 539 tcom.mt_op = MTFSF; 540 tcom.mt_count = dumpnum - 1; 541 #ifdef RRESTORE 542 if (host) 543 rmtioctl(MTFSF, dumpnum - 1); 544 else 545 #endif 546 if (!pipecmdin && ioctl(mt, MTIOCTOP, (char *)&tcom) < 0) 547 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno)); 548 } 549 550 void 551 printdumpinfo(void) 552 { 553 time_t t; 554 t = _time64_to_time(spcl.c_date); 555 fprintf(stdout, "Dump date: %s", ctime(&t)); 556 t = _time64_to_time(spcl.c_ddate); 557 fprintf(stdout, "Dumped from: %s", 558 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t)); 559 if (spcl.c_host[0] == '\0') 560 return; 561 fprintf(stderr, "Level %jd dump of %s on %s:%s\n", 562 (intmax_t)spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); 563 fprintf(stderr, "Label: %s\n", spcl.c_label); 564 } 565 566 int 567 extractfile(char *name) 568 { 569 int flags; 570 uid_t uid; 571 gid_t gid; 572 mode_t mode; 573 int extsize; 574 struct timespec mtimep[2], ctimep[2]; 575 struct entry *ep; 576 char *buf; 577 578 curfile.name = name; 579 curfile.action = USING; 580 mtimep[0].tv_sec = curfile.atime_sec; 581 mtimep[0].tv_nsec = curfile.atime_nsec; 582 mtimep[1].tv_sec = curfile.mtime_sec; 583 mtimep[1].tv_nsec = curfile.mtime_nsec; 584 ctimep[0].tv_sec = curfile.atime_sec; 585 ctimep[0].tv_nsec = curfile.atime_nsec; 586 ctimep[1].tv_sec = curfile.birthtime_sec; 587 ctimep[1].tv_nsec = curfile.birthtime_nsec; 588 extsize = curfile.extsize; 589 uid = getuid(); 590 if (uid == 0) 591 uid = curfile.uid; 592 gid = curfile.gid; 593 mode = curfile.mode; 594 flags = curfile.file_flags; 595 switch (mode & IFMT) { 596 597 default: 598 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); 599 skipfile(); 600 return (FAIL); 601 602 case IFSOCK: 603 vprintf(stdout, "skipped socket %s\n", name); 604 skipfile(); 605 return (GOOD); 606 607 case IFDIR: 608 if (mflag) { 609 ep = lookupname(name); 610 if (ep == NULL || ep->e_flags & EXTRACT) 611 panic("unextracted directory %s\n", name); 612 skipfile(); 613 return (GOOD); 614 } 615 vprintf(stdout, "extract file %s\n", name); 616 return (genliteraldir(name, curfile.ino)); 617 618 case IFLNK: 619 lnkbuf[0] = '\0'; 620 pathlen = 0; 621 buf = setupextattr(extsize); 622 getfile(xtrlnkfile, xtrattr, xtrlnkskip); 623 if (pathlen == 0) { 624 vprintf(stdout, 625 "%s: zero length symbolic link (ignored)\n", name); 626 return (GOOD); 627 } 628 if (linkit(lnkbuf, name, SYMLINK) == GOOD) { 629 if (extsize > 0) 630 set_extattr_link(name, buf, extsize); 631 (void) lchown(name, uid, gid); 632 (void) lchmod(name, mode); 633 (void) utimensat(AT_FDCWD, name, ctimep, 634 AT_SYMLINK_NOFOLLOW); 635 (void) utimensat(AT_FDCWD, name, mtimep, 636 AT_SYMLINK_NOFOLLOW); 637 (void) lchflags(name, flags); 638 return (GOOD); 639 } 640 return (FAIL); 641 642 case IFIFO: 643 vprintf(stdout, "extract fifo %s\n", name); 644 if (Nflag) { 645 skipfile(); 646 return (GOOD); 647 } 648 if (uflag) 649 (void) unlink(name); 650 if (mkfifo(name, 0600) < 0) { 651 fprintf(stderr, "%s: cannot create fifo: %s\n", 652 name, strerror(errno)); 653 skipfile(); 654 return (FAIL); 655 } 656 if (extsize == 0) { 657 skipfile(); 658 } else { 659 buf = setupextattr(extsize); 660 getfile(xtrnull, xtrattr, xtrnull); 661 set_extattr_file(name, buf, extsize); 662 } 663 (void) chown(name, uid, gid); 664 (void) chmod(name, mode); 665 (void) utimensat(AT_FDCWD, name, ctimep, 0); 666 (void) utimensat(AT_FDCWD, name, mtimep, 0); 667 (void) chflags(name, flags); 668 return (GOOD); 669 670 case IFCHR: 671 case IFBLK: 672 vprintf(stdout, "extract special file %s\n", name); 673 if (Nflag) { 674 skipfile(); 675 return (GOOD); 676 } 677 if (uflag) 678 (void) unlink(name); 679 if (mknod(name, (mode & (IFCHR | IFBLK)) | 0600, 680 (int)curfile.rdev) < 0) { 681 fprintf(stderr, "%s: cannot create special file: %s\n", 682 name, strerror(errno)); 683 skipfile(); 684 return (FAIL); 685 } 686 if (extsize == 0) { 687 skipfile(); 688 } else { 689 buf = setupextattr(extsize); 690 getfile(xtrnull, xtrattr, xtrnull); 691 set_extattr_file(name, buf, extsize); 692 } 693 (void) chown(name, uid, gid); 694 (void) chmod(name, mode); 695 (void) utimensat(AT_FDCWD, name, ctimep, 0); 696 (void) utimensat(AT_FDCWD, name, mtimep, 0); 697 (void) chflags(name, flags); 698 return (GOOD); 699 700 case IFREG: 701 vprintf(stdout, "extract file %s\n", name); 702 if (Nflag) { 703 skipfile(); 704 return (GOOD); 705 } 706 if (uflag) 707 (void) unlink(name); 708 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 709 0600)) < 0) { 710 fprintf(stderr, "%s: cannot create file: %s\n", 711 name, strerror(errno)); 712 skipfile(); 713 return (FAIL); 714 } 715 buf = setupextattr(extsize); 716 getfile(xtrfile, xtrattr, xtrskip); 717 if (extsize > 0) 718 set_extattr_fd(ofile, name, buf, extsize); 719 (void) fchown(ofile, uid, gid); 720 (void) fchmod(ofile, mode); 721 (void) futimens(ofile, ctimep); 722 (void) futimens(ofile, mtimep); 723 (void) fchflags(ofile, flags); 724 (void) close(ofile); 725 return (GOOD); 726 } 727 /* NOTREACHED */ 728 } 729 730 /* 731 * Set attributes for a file. 732 */ 733 void 734 set_extattr_file(char *name, void *buf, int size) 735 { 736 struct extattr *eap, *eaend; 737 738 vprintf(stdout, "Set attributes for %s:", name); 739 eaend = buf + size; 740 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 741 /* 742 * Make sure this entry is complete. 743 */ 744 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 745 dprintf(stdout, "\n\t%scorrupted", 746 eap == buf ? "" : "remainder "); 747 break; 748 } 749 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 750 continue; 751 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 752 namespace_names[eap->ea_namespace], eap->ea_length, 753 eap->ea_namelength, eap->ea_name); 754 /* 755 * First we try the general attribute setting interface. 756 * However, some attributes can only be set by root or 757 * by using special interfaces (for example, ACLs). 758 */ 759 if (extattr_set_file(name, eap->ea_namespace, eap->ea_name, 760 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 761 dprintf(stdout, " (set using extattr_set_file)"); 762 continue; 763 } 764 /* 765 * If the general interface refuses to set the attribute, 766 * then we try all the specialized interfaces that we 767 * know about. 768 */ 769 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 770 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 771 if (acl_set_file(name, ACL_TYPE_ACCESS, 772 EXTATTR_CONTENT(eap)) != -1) { 773 dprintf(stdout, " (set using acl_set_file)"); 774 continue; 775 } 776 } 777 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 778 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 779 if (acl_set_file(name, ACL_TYPE_DEFAULT, 780 EXTATTR_CONTENT(eap)) != -1) { 781 dprintf(stdout, " (set using acl_set_file)"); 782 continue; 783 } 784 } 785 vprintf(stdout, " (unable to set)"); 786 } 787 vprintf(stdout, "\n"); 788 } 789 790 /* 791 * Set attributes for a symbolic link. 792 */ 793 static void 794 set_extattr_link(char *name, void *buf, int size) 795 { 796 struct extattr *eap, *eaend; 797 798 vprintf(stdout, "Set attributes for %s:", name); 799 eaend = buf + size; 800 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 801 /* 802 * Make sure this entry is complete. 803 */ 804 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 805 dprintf(stdout, "\n\t%scorrupted", 806 eap == buf ? "" : "remainder "); 807 break; 808 } 809 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 810 continue; 811 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 812 namespace_names[eap->ea_namespace], eap->ea_length, 813 eap->ea_namelength, eap->ea_name); 814 /* 815 * First we try the general attribute setting interface. 816 * However, some attributes can only be set by root or 817 * by using special interfaces (for example, ACLs). 818 */ 819 if (extattr_set_link(name, eap->ea_namespace, eap->ea_name, 820 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 821 dprintf(stdout, " (set using extattr_set_link)"); 822 continue; 823 } 824 /* 825 * If the general interface refuses to set the attribute, 826 * then we try all the specialized interfaces that we 827 * know about. 828 */ 829 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 830 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 831 if (acl_set_link_np(name, ACL_TYPE_ACCESS, 832 EXTATTR_CONTENT(eap)) != -1) { 833 dprintf(stdout, " (set using acl_set_link_np)"); 834 continue; 835 } 836 } 837 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 838 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 839 if (acl_set_link_np(name, ACL_TYPE_DEFAULT, 840 EXTATTR_CONTENT(eap)) != -1) { 841 dprintf(stdout, " (set using acl_set_link_np)"); 842 continue; 843 } 844 } 845 vprintf(stdout, " (unable to set)"); 846 } 847 vprintf(stdout, "\n"); 848 } 849 850 /* 851 * Set attributes on a file descriptor. 852 */ 853 static void 854 set_extattr_fd(int fd, char *name, void *buf, int size) 855 { 856 struct extattr *eap, *eaend; 857 858 vprintf(stdout, "Set attributes for %s:", name); 859 eaend = buf + size; 860 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 861 /* 862 * Make sure this entry is complete. 863 */ 864 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 865 dprintf(stdout, "\n\t%scorrupted", 866 eap == buf ? "" : "remainder "); 867 break; 868 } 869 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 870 continue; 871 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 872 namespace_names[eap->ea_namespace], eap->ea_length, 873 eap->ea_namelength, eap->ea_name); 874 /* 875 * First we try the general attribute setting interface. 876 * However, some attributes can only be set by root or 877 * by using special interfaces (for example, ACLs). 878 */ 879 if (extattr_set_fd(fd, eap->ea_namespace, eap->ea_name, 880 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 881 dprintf(stdout, " (set using extattr_set_fd)"); 882 continue; 883 } 884 /* 885 * If the general interface refuses to set the attribute, 886 * then we try all the specialized interfaces that we 887 * know about. 888 */ 889 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 890 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 891 if (acl_set_fd(fd, EXTATTR_CONTENT(eap)) != -1) { 892 dprintf(stdout, " (set using acl_set_fd)"); 893 continue; 894 } 895 } 896 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 897 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 898 if (acl_set_file(name, ACL_TYPE_DEFAULT, 899 EXTATTR_CONTENT(eap)) != -1) { 900 dprintf(stdout, " (set using acl_set_file)"); 901 continue; 902 } 903 } 904 vprintf(stdout, " (unable to set)"); 905 } 906 vprintf(stdout, "\n"); 907 } 908 909 /* 910 * skip over bit maps on the tape 911 */ 912 void 913 skipmaps(void) 914 { 915 916 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI) 917 skipfile(); 918 } 919 920 /* 921 * skip over a file on the tape 922 */ 923 void 924 skipfile(void) 925 { 926 927 curfile.action = SKIP; 928 getfile(xtrnull, xtrnull, xtrnull); 929 } 930 931 /* 932 * Skip a hole in an output file 933 */ 934 static void 935 skiphole(void (*skip)(char *, long), long *seekpos) 936 { 937 char buf[MAXBSIZE]; 938 939 if (*seekpos > 0) { 940 (*skip)(buf, *seekpos); 941 *seekpos = 0; 942 } 943 } 944 945 /* 946 * Extract a file from the tape. 947 * When an allocated block is found it is passed to the fill function; 948 * when an unallocated block (hole) is found, a zeroed buffer is passed 949 * to the skip function. 950 */ 951 void 952 getfile(void (*datafill)(char *, long), void (*attrfill)(char *, long), 953 void (*skip)(char *, long)) 954 { 955 int i; 956 off_t size; 957 long seekpos; 958 int curblk, attrsize; 959 void (*fillit)(char *, long); 960 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; 961 char junk[TP_BSIZE]; 962 963 curblk = 0; 964 size = spcl.c_size; 965 seekpos = 0; 966 attrsize = spcl.c_extsize; 967 if (spcl.c_type == TS_END) 968 panic("ran off end of tape\n"); 969 if (spcl.c_magic != FS_UFS2_MAGIC) 970 panic("not at beginning of a file\n"); 971 if (!gettingfile && setjmp(restart) != 0) 972 return; 973 gettingfile++; 974 fillit = datafill; 975 if (size == 0 && attrsize > 0) { 976 fillit = attrfill; 977 size = attrsize; 978 attrsize = 0; 979 } 980 loop: 981 for (i = 0; i < spcl.c_count; i++) { 982 if (!readmapflag && i > TP_NINDIR) { 983 if (Dflag) { 984 fprintf(stderr, "spcl.c_count = %jd\n", 985 (intmax_t)spcl.c_count); 986 break; 987 } else 988 panic("spcl.c_count = %jd\n", 989 (intmax_t)spcl.c_count); 990 } 991 if (readmapflag || spcl.c_addr[i]) { 992 readtape(&buf[curblk++][0]); 993 if (curblk == fssize / TP_BSIZE) { 994 skiphole(skip, &seekpos); 995 (*fillit)((char *)buf, (long)(size > TP_BSIZE ? 996 fssize : (curblk - 1) * TP_BSIZE + size)); 997 curblk = 0; 998 } 999 } else { 1000 if (curblk > 0) { 1001 skiphole(skip, &seekpos); 1002 (*fillit)((char *)buf, (long)(size > TP_BSIZE ? 1003 curblk * TP_BSIZE : 1004 (curblk - 1) * TP_BSIZE + size)); 1005 curblk = 0; 1006 } 1007 /* 1008 * We have a block of a hole. Don't skip it 1009 * now, because there may be next adjacent 1010 * block of the hole in the file. Postpone the 1011 * seek until next file write. 1012 */ 1013 seekpos += (long)MIN(TP_BSIZE, size); 1014 } 1015 if ((size -= TP_BSIZE) <= 0) { 1016 if (size > -TP_BSIZE && curblk > 0) { 1017 skiphole(skip, &seekpos); 1018 (*fillit)((char *)buf, 1019 (long)((curblk * TP_BSIZE) + size)); 1020 curblk = 0; 1021 } 1022 if (attrsize > 0) { 1023 fillit = attrfill; 1024 size = attrsize; 1025 attrsize = 0; 1026 continue; 1027 } 1028 if (spcl.c_count - i > 1) 1029 dprintf(stdout, "skipping %d junk block(s)\n", 1030 spcl.c_count - i - 1); 1031 for (i++; i < spcl.c_count; i++) { 1032 if (!readmapflag && i > TP_NINDIR) { 1033 if (Dflag) { 1034 fprintf(stderr, 1035 "spcl.c_count = %jd\n", 1036 (intmax_t)spcl.c_count); 1037 break; 1038 } else 1039 panic("spcl.c_count = %jd\n", 1040 (intmax_t)spcl.c_count); 1041 } 1042 if (readmapflag || spcl.c_addr[i]) 1043 readtape(junk); 1044 } 1045 break; 1046 } 1047 } 1048 if (gethead(&spcl) == GOOD && size > 0) { 1049 if (spcl.c_type == TS_ADDR) 1050 goto loop; 1051 dprintf(stdout, 1052 "Missing address (header) block for %s at %ld blocks\n", 1053 curfile.name, blksread); 1054 } 1055 if (curblk > 0) 1056 panic("getfile: lost data\n"); 1057 findinode(&spcl); 1058 gettingfile = 0; 1059 } 1060 1061 /* 1062 * These variables are shared between the next two functions. 1063 */ 1064 static int extbufsize = 0; 1065 static char *extbuf; 1066 static int extloc; 1067 1068 /* 1069 * Allocate a buffer into which to extract extended attributes. 1070 */ 1071 static char * 1072 setupextattr(int extsize) 1073 { 1074 1075 extloc = 0; 1076 if (extsize <= extbufsize) 1077 return (extbuf); 1078 if (extbufsize > 0) 1079 free(extbuf); 1080 if ((extbuf = malloc(extsize)) != NULL) { 1081 extbufsize = extsize; 1082 return (extbuf); 1083 } 1084 extbufsize = 0; 1085 extbuf = NULL; 1086 fprintf(stderr, "Cannot extract %d bytes %s for inode %ju, name %s\n", 1087 extsize, "of extended attributes", (uintmax_t)curfile.ino, 1088 curfile.name); 1089 return (NULL); 1090 } 1091 1092 /* 1093 * Extract the next block of extended attributes. 1094 */ 1095 static void 1096 xtrattr(char *buf, long size) 1097 { 1098 1099 if (extloc + size > extbufsize) 1100 panic("overrun attribute buffer\n"); 1101 memmove(&extbuf[extloc], buf, size); 1102 extloc += size; 1103 } 1104 1105 /* 1106 * Write out the next block of a file. 1107 */ 1108 static void 1109 xtrfile(char *buf, long size) 1110 { 1111 1112 if (Nflag) 1113 return; 1114 if (write(ofile, buf, (int) size) == -1) { 1115 fprintf(stderr, 1116 "write error extracting inode %ju, name %s\nwrite: %s\n", 1117 (uintmax_t)curfile.ino, curfile.name, strerror(errno)); 1118 } 1119 } 1120 1121 /* 1122 * Skip over a hole in a file. 1123 */ 1124 /* ARGSUSED */ 1125 static void 1126 xtrskip(char *buf, long size) 1127 { 1128 1129 if (lseek(ofile, size, SEEK_CUR) == -1) { 1130 fprintf(stderr, 1131 "seek error extracting inode %ju, name %s\nlseek: %s\n", 1132 (uintmax_t)curfile.ino, curfile.name, strerror(errno)); 1133 done(1); 1134 } 1135 } 1136 1137 /* 1138 * Collect the next block of a symbolic link. 1139 */ 1140 static void 1141 xtrlnkfile(char *buf, long size) 1142 { 1143 1144 pathlen += size; 1145 if (pathlen > MAXPATHLEN) { 1146 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", 1147 curfile.name, lnkbuf, buf, pathlen); 1148 done(1); 1149 } 1150 (void) strcat(lnkbuf, buf); 1151 } 1152 1153 /* 1154 * Skip over a hole in a symbolic link (should never happen). 1155 */ 1156 /* ARGSUSED */ 1157 static void 1158 xtrlnkskip(char *buf, long size) 1159 { 1160 1161 fprintf(stderr, "unallocated block in symbolic link %s\n", 1162 curfile.name); 1163 done(1); 1164 } 1165 1166 /* 1167 * Collect the next block of a bit map. 1168 */ 1169 static void 1170 xtrmap(char *buf, long size) 1171 { 1172 1173 memmove(map, buf, size); 1174 map += size; 1175 } 1176 1177 /* 1178 * Skip over a hole in a bit map (should never happen). 1179 */ 1180 /* ARGSUSED */ 1181 static void 1182 xtrmapskip(char *buf, long size) 1183 { 1184 1185 panic("hole in map\n"); 1186 map += size; 1187 } 1188 1189 /* 1190 * Noop, when an extraction function is not needed. 1191 */ 1192 /* ARGSUSED */ 1193 void 1194 xtrnull(char *buf, long size) 1195 { 1196 1197 return; 1198 } 1199 1200 /* 1201 * Read TP_BSIZE blocks from the input. 1202 * Handle read errors, and end of media. 1203 */ 1204 static void 1205 readtape(char *buf) 1206 { 1207 long rd, newvol, i, oldnumtrec; 1208 int cnt, seek_failed; 1209 1210 if (blkcnt + (byteslide > 0) < numtrec) { 1211 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1212 blksread++; 1213 tapeaddr++; 1214 return; 1215 } 1216 if (numtrec > 0) 1217 memmove(&tapebuf[-TP_BSIZE], 1218 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE); 1219 oldnumtrec = numtrec; 1220 for (i = 0; i < ntrec; i++) 1221 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1222 if (numtrec == 0) 1223 numtrec = ntrec; 1224 cnt = ntrec * TP_BSIZE; 1225 rd = 0; 1226 getmore: 1227 #ifdef RRESTORE 1228 if (host) 1229 i = rmtread(&tapebuf[rd], cnt); 1230 else 1231 #endif 1232 i = read(mt, &tapebuf[rd], cnt); 1233 /* 1234 * Check for mid-tape short read error. 1235 * If found, skip rest of buffer and start with the next. 1236 */ 1237 if (!pipein && !pipecmdin && numtrec < ntrec && i > 0) { 1238 dprintf(stdout, "mid-media short read error.\n"); 1239 numtrec = ntrec; 1240 } 1241 /* 1242 * Handle partial block read. 1243 */ 1244 if ((pipein || pipecmdin) && i == 0 && rd > 0) 1245 i = rd; 1246 else if (i > 0 && i != ntrec * TP_BSIZE) { 1247 if (pipein || pipecmdin) { 1248 rd += i; 1249 cnt -= i; 1250 if (cnt > 0) 1251 goto getmore; 1252 i = rd; 1253 } else { 1254 /* 1255 * Short read. Process the blocks read. 1256 */ 1257 if (i % TP_BSIZE != 0) 1258 vprintf(stdout, 1259 "partial block read: %ld should be %ld\n", 1260 i, ntrec * TP_BSIZE); 1261 numtrec = i / TP_BSIZE; 1262 } 1263 } 1264 /* 1265 * Handle read error. 1266 */ 1267 if (i < 0) { 1268 fprintf(stderr, "Tape read error while "); 1269 switch (curfile.action) { 1270 default: 1271 fprintf(stderr, "trying to set up tape\n"); 1272 break; 1273 case UNKNOWN: 1274 fprintf(stderr, "trying to resynchronize\n"); 1275 break; 1276 case USING: 1277 fprintf(stderr, "restoring %s\n", curfile.name); 1278 break; 1279 case SKIP: 1280 fprintf(stderr, "skipping over inode %ju\n", 1281 (uintmax_t)curfile.ino); 1282 break; 1283 } 1284 if (!yflag && !reply("continue")) 1285 done(1); 1286 i = ntrec * TP_BSIZE; 1287 memset(tapebuf, 0, i); 1288 #ifdef RRESTORE 1289 if (host) 1290 seek_failed = (rmtseek(i, 1) < 0); 1291 else 1292 #endif 1293 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1); 1294 1295 if (seek_failed) { 1296 fprintf(stderr, 1297 "continuation failed: %s\n", strerror(errno)); 1298 done(1); 1299 } 1300 } 1301 /* 1302 * Handle end of tape. 1303 */ 1304 if (i == 0) { 1305 vprintf(stdout, "End-of-tape encountered\n"); 1306 if (!pipein) { 1307 newvol = volno + 1; 1308 volno = 0; 1309 numtrec = 0; 1310 getvol(newvol); 1311 readtape(buf); 1312 return; 1313 } 1314 if (rd % TP_BSIZE != 0) 1315 panic("partial block read: %ld should be %ld\n", 1316 rd, ntrec * TP_BSIZE); 1317 terminateinput(); 1318 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE); 1319 } 1320 if (oldnumtrec == 0) 1321 blkcnt = 0; 1322 else 1323 blkcnt -= oldnumtrec; 1324 memmove(buf, 1325 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1326 blksread++; 1327 tapeaddr++; 1328 } 1329 1330 static void 1331 findtapeblksize(void) 1332 { 1333 long i; 1334 1335 for (i = 0; i < ntrec; i++) 1336 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1337 blkcnt = 0; 1338 #ifdef RRESTORE 1339 if (host) 1340 i = rmtread(tapebuf, ntrec * TP_BSIZE); 1341 else 1342 #endif 1343 i = read(mt, tapebuf, ntrec * TP_BSIZE); 1344 1345 if (i <= 0) { 1346 fprintf(stderr, "tape read error: %s\n", strerror(errno)); 1347 done(1); 1348 } 1349 if (i % TP_BSIZE != 0) { 1350 fprintf(stderr, "Tape block size (%ld) %s (%d)\n", 1351 i, "is not a multiple of dump block size", TP_BSIZE); 1352 done(1); 1353 } 1354 ntrec = i / TP_BSIZE; 1355 numtrec = ntrec; 1356 vprintf(stdout, "Tape block size is %ld\n", ntrec); 1357 } 1358 1359 void 1360 closemt(void) 1361 { 1362 1363 if (mt < 0) 1364 return; 1365 if (pipecmdin) { 1366 pclose(popenfp); 1367 popenfp = NULL; 1368 } else 1369 #ifdef RRESTORE 1370 if (host) 1371 rmtclose(); 1372 else 1373 #endif 1374 (void) close(mt); 1375 } 1376 1377 /* 1378 * Read the next block from the tape. 1379 * If it is not any valid header, return an error. 1380 */ 1381 static int 1382 gethead(struct s_spcl *buf) 1383 { 1384 long i; 1385 1386 readtape((char *)buf); 1387 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) { 1388 if (buf->c_magic == OFS_MAGIC) { 1389 fprintf(stderr, 1390 "Format of dump tape is too old. Must use\n"); 1391 fprintf(stderr, 1392 "a version of restore from before 2002.\n"); 1393 return (FAIL); 1394 } 1395 if (swabl(buf->c_magic) != FS_UFS2_MAGIC && 1396 buf->c_magic != NFS_MAGIC) { 1397 if (buf->c_magic == OFS_MAGIC) { 1398 fprintf(stderr, 1399 "Format of dump tape is too old. Must use\n"); 1400 fprintf(stderr, 1401 "a version of restore from before 2002.\n"); 1402 } 1403 return (FAIL); 1404 } 1405 if (!Bcvt) { 1406 vprintf(stdout, "Note: Doing Byte swapping\n"); 1407 Bcvt = 1; 1408 } 1409 } 1410 if (checksum((int *)buf) == FAIL) 1411 return (FAIL); 1412 if (Bcvt) { 1413 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf); 1414 swabst((u_char *)"l",(u_char *) &buf->c_level); 1415 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags); 1416 } 1417 readmapflag = 0; 1418 1419 switch (buf->c_type) { 1420 1421 case TS_CLRI: 1422 case TS_BITS: 1423 /* 1424 * Have to patch up missing information in bit map headers 1425 */ 1426 buf->c_size = buf->c_count * TP_BSIZE; 1427 if (buf->c_count > TP_NINDIR) 1428 readmapflag = 1; 1429 else 1430 for (i = 0; i < buf->c_count; i++) 1431 buf->c_addr[i]++; 1432 /* FALL THROUGH */ 1433 1434 case TS_TAPE: 1435 if (buf->c_magic == NFS_MAGIC && 1436 (buf->c_flags & NFS_DR_NEWINODEFMT) == 0) 1437 oldinofmt = 1; 1438 /* FALL THROUGH */ 1439 1440 case TS_END: 1441 buf->c_inumber = 0; 1442 /* FALL THROUGH */ 1443 1444 case TS_ADDR: 1445 case TS_INODE: 1446 /* 1447 * For old dump tapes, have to copy up old fields to 1448 * new locations. 1449 */ 1450 if (buf->c_magic == NFS_MAGIC) { 1451 buf->c_tapea = buf->c_old_tapea; 1452 buf->c_firstrec = buf->c_old_firstrec; 1453 buf->c_date = _time32_to_time(buf->c_old_date); 1454 buf->c_ddate = _time32_to_time(buf->c_old_ddate); 1455 buf->c_atime = _time32_to_time(buf->c_old_atime); 1456 buf->c_mtime = _time32_to_time(buf->c_old_mtime); 1457 buf->c_birthtime = 0; 1458 buf->c_birthtimensec = 0; 1459 buf->c_extsize = 0; 1460 } 1461 break; 1462 1463 default: 1464 panic("gethead: unknown inode type %d\n", buf->c_type); 1465 break; 1466 } 1467 if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate) 1468 fprintf(stderr, "Header with wrong dumpdate.\n"); 1469 /* 1470 * If we're restoring a filesystem with the old (FreeBSD 1) 1471 * format inodes, copy the uid/gid to the new location 1472 */ 1473 if (oldinofmt) { 1474 buf->c_uid = buf->c_spare1[1]; 1475 buf->c_gid = buf->c_spare1[2]; 1476 } 1477 buf->c_magic = FS_UFS2_MAGIC; 1478 tapeaddr = buf->c_tapea; 1479 if (dflag) 1480 accthdr(buf); 1481 return(GOOD); 1482 } 1483 1484 /* 1485 * Check that a header is where it belongs and predict the next header 1486 */ 1487 static void 1488 accthdr(struct s_spcl *header) 1489 { 1490 static ino_t previno = 0x7fffffff; 1491 static int prevtype; 1492 static long predict; 1493 long blks, i; 1494 1495 if (header->c_type == TS_TAPE) { 1496 fprintf(stderr, "Volume header "); 1497 if (header->c_firstrec) 1498 fprintf(stderr, "begins with record %jd", 1499 (intmax_t)header->c_firstrec); 1500 fprintf(stderr, "\n"); 1501 previno = 0x7fffffff; 1502 return; 1503 } 1504 if (previno == 0x7fffffff) 1505 goto newcalc; 1506 switch (prevtype) { 1507 case TS_BITS: 1508 fprintf(stderr, "Dumped inodes map header"); 1509 break; 1510 case TS_CLRI: 1511 fprintf(stderr, "Used inodes map header"); 1512 break; 1513 case TS_INODE: 1514 fprintf(stderr, "File header, ino %ju", (uintmax_t)previno); 1515 break; 1516 case TS_ADDR: 1517 fprintf(stderr, "File continuation header, ino %ju", 1518 (uintmax_t)previno); 1519 break; 1520 case TS_END: 1521 fprintf(stderr, "End of tape header"); 1522 break; 1523 } 1524 if (predict != blksread - 1) 1525 fprintf(stderr, "; predicted %ld blocks, got %ld blocks", 1526 predict, blksread - 1); 1527 fprintf(stderr, "\n"); 1528 newcalc: 1529 blks = 0; 1530 if (header->c_type != TS_END) 1531 for (i = 0; i < header->c_count; i++) 1532 if (readmapflag || header->c_addr[i] != 0) 1533 blks++; 1534 predict = blks; 1535 blksread = 0; 1536 prevtype = header->c_type; 1537 previno = header->c_inumber; 1538 } 1539 1540 /* 1541 * Find an inode header. 1542 * Complain if had to skip. 1543 */ 1544 static void 1545 findinode(struct s_spcl *header) 1546 { 1547 static long skipcnt = 0; 1548 long i; 1549 char buf[TP_BSIZE]; 1550 int htype; 1551 1552 curfile.name = "<name unknown>"; 1553 curfile.action = UNKNOWN; 1554 curfile.mode = 0; 1555 curfile.ino = 0; 1556 do { 1557 htype = header->c_type; 1558 switch (htype) { 1559 1560 case TS_ADDR: 1561 /* 1562 * Skip up to the beginning of the next record 1563 */ 1564 for (i = 0; i < header->c_count; i++) 1565 if (header->c_addr[i]) 1566 readtape(buf); 1567 while (gethead(header) == FAIL || 1568 _time64_to_time(header->c_date) != dumpdate) { 1569 skipcnt++; 1570 if (Dflag) { 1571 byteslide++; 1572 if (byteslide < TP_BSIZE) { 1573 blkcnt--; 1574 blksread--; 1575 } else 1576 byteslide = 0; 1577 } 1578 } 1579 break; 1580 1581 case TS_INODE: 1582 curfile.mode = header->c_mode; 1583 curfile.uid = header->c_uid; 1584 curfile.gid = header->c_gid; 1585 curfile.file_flags = header->c_file_flags; 1586 curfile.rdev = header->c_rdev; 1587 curfile.atime_sec = header->c_atime; 1588 curfile.atime_nsec = header->c_atimensec; 1589 curfile.mtime_sec = header->c_mtime; 1590 curfile.mtime_nsec = header->c_mtimensec; 1591 curfile.birthtime_sec = header->c_birthtime; 1592 curfile.birthtime_nsec = header->c_birthtimensec; 1593 curfile.extsize = header->c_extsize; 1594 curfile.size = header->c_size; 1595 curfile.ino = header->c_inumber; 1596 break; 1597 1598 case TS_END: 1599 /* If we missed some tapes, get another volume. */ 1600 if (tapesread & (tapesread + 1)) { 1601 getvol(0); 1602 continue; 1603 } 1604 curfile.ino = maxino; 1605 break; 1606 1607 case TS_CLRI: 1608 curfile.name = "<file removal list>"; 1609 break; 1610 1611 case TS_BITS: 1612 curfile.name = "<file dump list>"; 1613 break; 1614 1615 case TS_TAPE: 1616 if (Dflag) 1617 fprintf(stderr, "unexpected tape header\n"); 1618 else 1619 panic("unexpected tape header\n"); 1620 1621 default: 1622 if (Dflag) 1623 fprintf(stderr, "unknown tape header type %d\n", 1624 spcl.c_type); 1625 else 1626 panic("unknown tape header type %d\n", 1627 spcl.c_type); 1628 while (gethead(header) == FAIL || 1629 _time64_to_time(header->c_date) != dumpdate) { 1630 skipcnt++; 1631 if (Dflag) { 1632 byteslide++; 1633 if (byteslide < TP_BSIZE) { 1634 blkcnt--; 1635 blksread--; 1636 } else 1637 byteslide = 0; 1638 } 1639 } 1640 1641 } 1642 } while (htype == TS_ADDR); 1643 if (skipcnt > 0) 1644 fprintf(stderr, "resync restore, skipped %ld %s\n", 1645 skipcnt, Dflag ? "bytes" : "blocks"); 1646 skipcnt = 0; 1647 } 1648 1649 static int 1650 checksum(int *buf) 1651 { 1652 int i, j; 1653 1654 j = sizeof(union u_spcl) / sizeof(int); 1655 i = 0; 1656 if (!Bcvt) { 1657 do 1658 i += *buf++; 1659 while (--j); 1660 } else { 1661 /* What happens if we want to read restore tapes 1662 for a 16bit int machine??? */ 1663 do 1664 i += swabl(*buf++); 1665 while (--j); 1666 } 1667 1668 if (i != CHECKSUM) { 1669 fprintf(stderr, "Checksum error %o, inode %ju file %s\n", i, 1670 (uintmax_t)curfile.ino, curfile.name); 1671 return(FAIL); 1672 } 1673 return(GOOD); 1674 } 1675 1676 #ifdef RRESTORE 1677 #include <stdarg.h> 1678 1679 void 1680 msg(const char *fmt, ...) 1681 { 1682 va_list ap; 1683 va_start(ap, fmt); 1684 (void)vfprintf(stderr, fmt, ap); 1685 va_end(ap); 1686 } 1687 #endif /* RRESTORE */ 1688 1689 static u_char * 1690 swabshort(u_char *sp, int n) 1691 { 1692 char c; 1693 1694 while (--n >= 0) { 1695 c = sp[0]; sp[0] = sp[1]; sp[1] = c; 1696 sp += 2; 1697 } 1698 return (sp); 1699 } 1700 1701 static u_char * 1702 swablong(u_char *sp, int n) 1703 { 1704 char c; 1705 1706 while (--n >= 0) { 1707 c = sp[0]; sp[0] = sp[3]; sp[3] = c; 1708 c = sp[2]; sp[2] = sp[1]; sp[1] = c; 1709 sp += 4; 1710 } 1711 return (sp); 1712 } 1713 1714 static u_char * 1715 swabquad(u_char *sp, int n) 1716 { 1717 char c; 1718 1719 while (--n >= 0) { 1720 c = sp[0]; sp[0] = sp[7]; sp[7] = c; 1721 c = sp[1]; sp[1] = sp[6]; sp[6] = c; 1722 c = sp[2]; sp[2] = sp[5]; sp[5] = c; 1723 c = sp[3]; sp[3] = sp[4]; sp[4] = c; 1724 sp += 8; 1725 } 1726 return (sp); 1727 } 1728 1729 void 1730 swabst(u_char *cp, u_char *sp) 1731 { 1732 int n = 0; 1733 1734 while (*cp) { 1735 switch (*cp) { 1736 case '0': case '1': case '2': case '3': case '4': 1737 case '5': case '6': case '7': case '8': case '9': 1738 n = (n * 10) + (*cp++ - '0'); 1739 continue; 1740 1741 case 's': case 'w': case 'h': 1742 if (n == 0) 1743 n = 1; 1744 sp = swabshort(sp, n); 1745 break; 1746 1747 case 'l': 1748 if (n == 0) 1749 n = 1; 1750 sp = swablong(sp, n); 1751 break; 1752 1753 case 'q': 1754 if (n == 0) 1755 n = 1; 1756 sp = swabquad(sp, n); 1757 break; 1758 1759 case 'b': 1760 if (n == 0) 1761 n = 1; 1762 sp += n; 1763 break; 1764 1765 default: 1766 fprintf(stderr, "Unknown conversion character: %c\n", 1767 *cp); 1768 done(0); 1769 break; 1770 } 1771 cp++; 1772 n = 0; 1773 } 1774 } 1775 1776 static u_long 1777 swabl(u_long x) 1778 { 1779 swabst((u_char *)"l", (u_char *)&x); 1780 return (x); 1781 } 1782