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