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 && !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 if (pipecmdin) { 337 closemt(); 338 goto getpipecmdhdr; 339 } 340 goto gethdr; 341 } 342 again: 343 if (pipein) 344 done(1); /* pipes do not get a second chance */ 345 if (command == 'R' || command == 'r' || curfile.action != SKIP) 346 newvol = nextvol; 347 else 348 newvol = 0; 349 while (newvol <= 0) { 350 if (tapesread == 0) { 351 fprintf(stderr, "%s%s%s%s%s%s%s", 352 "You have not read any tapes yet.\n", 353 "If you are extracting just a few files,", 354 " start with the last volume\n", 355 "and work towards the first; restore", 356 " can quickly skip tapes that\n", 357 "have no further files to extract.", 358 " Otherwise, begin with volume 1.\n"); 359 } else { 360 fprintf(stderr, "You have read volumes"); 361 strcpy(buf, ": "); 362 for (i = 0; i < 32; i++) 363 if (tapesread & (1 << i)) { 364 fprintf(stderr, "%s%ld", buf, i + 1); 365 strcpy(buf, ", "); 366 } 367 fprintf(stderr, "\n"); 368 } 369 do { 370 fprintf(stderr, "Specify next volume #: "); 371 (void) fflush(stderr); 372 if (fgets(buf, BUFSIZ, terminal) == NULL) 373 done(1); 374 } while (buf[0] == '\n'); 375 newvol = atoi(buf); 376 if (newvol <= 0) { 377 fprintf(stderr, 378 "Volume numbers are positive numerics\n"); 379 } 380 } 381 if (newvol == volno) { 382 tapesread |= 1 << (volno - 1); 383 return; 384 } 385 closemt(); 386 fprintf(stderr, "Mount tape volume %ld\n", newvol); 387 fprintf(stderr, "Enter ``none'' if there are no more tapes\n"); 388 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape); 389 (void) fflush(stderr); 390 if (fgets(buf, BUFSIZ, terminal) == NULL) 391 done(1); 392 if (!strcmp(buf, "none\n")) { 393 terminateinput(); 394 return; 395 } 396 if (buf[0] != '\n') { 397 (void) strcpy(magtape, buf); 398 magtape[strlen(magtape) - 1] = '\0'; 399 } 400 if (pipecmdin) { 401 char volno[sizeof("2147483647")]; 402 403 getpipecmdhdr: 404 (void)sprintf(volno, "%d", newvol); 405 if (setenv("RESTORE_VOLUME", volno, 1) == -1) { 406 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n", 407 strerror(errno)); 408 done(1); 409 } 410 popenfp = popen(magtape, "r"); 411 mt = popenfp ? fileno(popenfp) : -1; 412 } else 413 #ifdef RRESTORE 414 if (host) 415 mt = rmtopen(magtape, 0); 416 else 417 #endif 418 mt = open(magtape, O_RDONLY, 0); 419 420 if (mt == -1) { 421 fprintf(stderr, "Cannot open %s\n", magtape); 422 volno = -1; 423 goto again; 424 } 425 gethdr: 426 volno = newvol; 427 setdumpnum(); 428 FLUSHTAPEBUF(); 429 if (gethead(&tmpbuf) == FAIL) { 430 dprintf(stdout, "header read failed at %ld blocks\n", blksread); 431 fprintf(stderr, "tape is not dump tape\n"); 432 volno = 0; 433 goto again; 434 } 435 if (tmpbuf.c_volume != volno) { 436 fprintf(stderr, "Wrong volume (%ld)\n", tmpbuf.c_volume); 437 volno = 0; 438 goto again; 439 } 440 if (_time64_to_time(tmpbuf.c_date) != dumpdate || 441 _time64_to_time(tmpbuf.c_ddate) != dumptime) { 442 time_t t = _time64_to_time(tmpbuf.c_date); 443 fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t)); 444 fprintf(stderr, "\twanted: %s", ctime(&dumpdate)); 445 volno = 0; 446 goto again; 447 } 448 tapesread |= 1 << (volno - 1); 449 blksread = savecnt; 450 /* 451 * If continuing from the previous volume, skip over any 452 * blocks read already at the end of the previous volume. 453 * 454 * If coming to this volume at random, skip to the beginning 455 * of the next record. 456 */ 457 dprintf(stdout, "last rec %qd, tape starts with %qd\n", prevtapea, 458 tmpbuf.c_tapea); 459 if (tmpbuf.c_type == TS_TAPE) { 460 if (curfile.action != USING) { 461 /* 462 * XXX Dump incorrectly sets c_count to 1 in the 463 * volume header of the first tape, so ignore 464 * c_count when volno == 1. 465 */ 466 if (volno != 1) 467 for (i = tmpbuf.c_count; i > 0; i--) 468 readtape(buf); 469 } else if (tmpbuf.c_tapea <= prevtapea) { 470 /* 471 * Normally the value of c_tapea in the volume 472 * header is the record number of the header itself. 473 * However in the volume header following an EOT- 474 * terminated tape, it is the record number of the 475 * first continuation data block (dump bug?). 476 * 477 * The next record we want is `prevtapea + 1'. 478 */ 479 i = prevtapea + 1 - tmpbuf.c_tapea; 480 dprintf(stderr, "Skipping %ld duplicate record%s.\n", 481 i, i > 1 ? "s" : ""); 482 while (--i >= 0) 483 readtape(buf); 484 } 485 } 486 if (curfile.action == USING) { 487 if (volno == 1) 488 panic("active file into volume 1\n"); 489 return; 490 } 491 (void) gethead(&spcl); 492 findinode(&spcl); 493 if (gettingfile) { 494 gettingfile = 0; 495 longjmp(restart, 1); 496 } 497 } 498 499 /* 500 * Handle unexpected EOF. 501 */ 502 static void 503 terminateinput(void) 504 { 505 506 if (gettingfile && curfile.action == USING) { 507 printf("Warning: %s %s\n", 508 "End-of-input encountered while extracting", curfile.name); 509 } 510 curfile.name = "<name unknown>"; 511 curfile.action = UNKNOWN; 512 curfile.mode = 0; 513 curfile.ino = maxino; 514 if (gettingfile) { 515 gettingfile = 0; 516 longjmp(restart, 1); 517 } 518 } 519 520 /* 521 * handle multiple dumps per tape by skipping forward to the 522 * appropriate one. 523 */ 524 static void 525 setdumpnum(void) 526 { 527 struct mtop tcom; 528 529 if (dumpnum == 1 || volno != 1) 530 return; 531 if (pipein) { 532 fprintf(stderr, "Cannot have multiple dumps on pipe input\n"); 533 done(1); 534 } 535 tcom.mt_op = MTFSF; 536 tcom.mt_count = dumpnum - 1; 537 #ifdef RRESTORE 538 if (host) 539 rmtioctl(MTFSF, dumpnum - 1); 540 else 541 #endif 542 if (!pipecmdin && ioctl(mt, MTIOCTOP, (char *)&tcom) < 0) 543 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno)); 544 } 545 546 void 547 printdumpinfo(void) 548 { 549 time_t t; 550 t = _time64_to_time(spcl.c_date); 551 fprintf(stdout, "Dump date: %s", ctime(&t)); 552 t = _time64_to_time(spcl.c_ddate); 553 fprintf(stdout, "Dumped from: %s", 554 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t)); 555 if (spcl.c_host[0] == '\0') 556 return; 557 fprintf(stderr, "Level %ld dump of %s on %s:%s\n", 558 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev); 559 fprintf(stderr, "Label: %s\n", spcl.c_label); 560 } 561 562 int 563 extractfile(char *name) 564 { 565 int flags; 566 uid_t uid; 567 gid_t gid; 568 mode_t mode; 569 int extsize; 570 struct timeval mtimep[2], ctimep[2]; 571 struct entry *ep; 572 char *buf; 573 574 curfile.name = name; 575 curfile.action = USING; 576 mtimep[0].tv_sec = curfile.atime_sec; 577 mtimep[0].tv_usec = curfile.atime_nsec / 1000; 578 mtimep[1].tv_sec = curfile.mtime_sec; 579 mtimep[1].tv_usec = curfile.mtime_nsec / 1000; 580 ctimep[0].tv_sec = curfile.atime_sec; 581 ctimep[0].tv_usec = curfile.atime_nsec / 1000; 582 ctimep[1].tv_sec = curfile.birthtime_sec; 583 ctimep[1].tv_usec = curfile.birthtime_nsec / 1000; 584 extsize = curfile.extsize; 585 uid = getuid(); 586 if (uid == 0) 587 uid = curfile.uid; 588 gid = curfile.gid; 589 mode = curfile.mode; 590 flags = curfile.file_flags; 591 switch (mode & IFMT) { 592 593 default: 594 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); 595 skipfile(); 596 return (FAIL); 597 598 case IFSOCK: 599 vprintf(stdout, "skipped socket %s\n", name); 600 skipfile(); 601 return (GOOD); 602 603 case IFDIR: 604 if (mflag) { 605 ep = lookupname(name); 606 if (ep == NULL || ep->e_flags & EXTRACT) 607 panic("unextracted directory %s\n", name); 608 skipfile(); 609 return (GOOD); 610 } 611 vprintf(stdout, "extract file %s\n", name); 612 return (genliteraldir(name, curfile.ino)); 613 614 case IFLNK: 615 lnkbuf[0] = '\0'; 616 pathlen = 0; 617 buf = setupextattr(extsize); 618 getfile(xtrlnkfile, xtrattr, xtrlnkskip); 619 if (pathlen == 0) { 620 vprintf(stdout, 621 "%s: zero length symbolic link (ignored)\n", name); 622 return (GOOD); 623 } 624 if (linkit(lnkbuf, name, SYMLINK) == GOOD) { 625 if (extsize > 0) 626 set_extattr_link(name, buf, extsize); 627 (void) lchown(name, uid, gid); 628 (void) lchmod(name, mode); 629 (void) lutimes(name, ctimep); 630 (void) lutimes(name, mtimep); 631 (void) lchflags(name, flags); 632 return (GOOD); 633 } 634 return (FAIL); 635 636 case IFIFO: 637 vprintf(stdout, "extract fifo %s\n", name); 638 if (Nflag) { 639 skipfile(); 640 return (GOOD); 641 } 642 if (uflag) 643 (void) unlink(name); 644 if (mkfifo(name, 0600) < 0) { 645 fprintf(stderr, "%s: cannot create fifo: %s\n", 646 name, strerror(errno)); 647 skipfile(); 648 return (FAIL); 649 } 650 if (extsize == 0) { 651 skipfile(); 652 } else { 653 buf = setupextattr(extsize); 654 getfile(xtrnull, xtrattr, xtrnull); 655 set_extattr_file(name, buf, extsize); 656 } 657 (void) chown(name, uid, gid); 658 (void) chmod(name, mode); 659 (void) utimes(name, ctimep); 660 (void) utimes(name, mtimep); 661 (void) chflags(name, flags); 662 return (GOOD); 663 664 case IFCHR: 665 case IFBLK: 666 vprintf(stdout, "extract special file %s\n", name); 667 if (Nflag) { 668 skipfile(); 669 return (GOOD); 670 } 671 if (uflag) 672 (void) unlink(name); 673 if (mknod(name, (mode & (IFCHR | IFBLK)) | 0600, 674 (int)curfile.rdev) < 0) { 675 fprintf(stderr, "%s: cannot create special file: %s\n", 676 name, strerror(errno)); 677 skipfile(); 678 return (FAIL); 679 } 680 if (extsize == 0) { 681 skipfile(); 682 } else { 683 buf = setupextattr(extsize); 684 getfile(xtrnull, xtrattr, xtrnull); 685 set_extattr_file(name, buf, extsize); 686 } 687 (void) chown(name, uid, gid); 688 (void) chmod(name, mode); 689 (void) utimes(name, ctimep); 690 (void) utimes(name, mtimep); 691 (void) chflags(name, flags); 692 return (GOOD); 693 694 case IFREG: 695 vprintf(stdout, "extract file %s\n", name); 696 if (Nflag) { 697 skipfile(); 698 return (GOOD); 699 } 700 if (uflag) 701 (void) unlink(name); 702 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 703 0600)) < 0) { 704 fprintf(stderr, "%s: cannot create file: %s\n", 705 name, strerror(errno)); 706 skipfile(); 707 return (FAIL); 708 } 709 buf = setupextattr(extsize); 710 getfile(xtrfile, xtrattr, xtrskip); 711 if (extsize > 0) 712 set_extattr_fd(ofile, name, buf, extsize); 713 (void) fchown(ofile, uid, gid); 714 (void) fchmod(ofile, mode); 715 (void) futimes(ofile, ctimep); 716 (void) futimes(ofile, mtimep); 717 (void) fchflags(ofile, flags); 718 (void) close(ofile); 719 return (GOOD); 720 } 721 /* NOTREACHED */ 722 } 723 724 /* 725 * Set attributes for a file. 726 */ 727 void 728 set_extattr_file(char *name, void *buf, int size) 729 { 730 struct extattr *eap, *eaend; 731 732 vprintf(stdout, "Set attributes for %s:", name); 733 eaend = buf + size; 734 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 735 /* 736 * Make sure this entry is complete. 737 */ 738 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 739 dprintf(stdout, "\n\t%scorrupted", 740 eap == buf ? "" : "remainder "); 741 break; 742 } 743 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 744 continue; 745 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 746 namespace_names[eap->ea_namespace], eap->ea_length, 747 eap->ea_namelength, eap->ea_name); 748 /* 749 * First we try the general attribute setting interface. 750 * However, some attributes can only be set by root or 751 * by using special interfaces (for example, ACLs). 752 */ 753 if (extattr_set_file(name, eap->ea_namespace, eap->ea_name, 754 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 755 dprintf(stdout, " (set using extattr_set_file)"); 756 continue; 757 } 758 /* 759 * If the general interface refuses to set the attribute, 760 * then we try all the specialized interfaces that we 761 * know about. 762 */ 763 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 764 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 765 if (acl_set_file(name, ACL_TYPE_ACCESS, 766 EXTATTR_CONTENT(eap)) != -1) { 767 dprintf(stdout, " (set using acl_set_file)"); 768 continue; 769 } 770 } 771 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 772 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 773 if (acl_set_file(name, ACL_TYPE_DEFAULT, 774 EXTATTR_CONTENT(eap)) != -1) { 775 dprintf(stdout, " (set using acl_set_file)"); 776 continue; 777 } 778 } 779 vprintf(stdout, " (unable to set)"); 780 } 781 vprintf(stdout, "\n"); 782 } 783 784 /* 785 * Set attributes for a symbolic link. 786 */ 787 static void 788 set_extattr_link(char *name, void *buf, int size) 789 { 790 struct extattr *eap, *eaend; 791 792 vprintf(stdout, "Set attributes for %s:", name); 793 eaend = buf + size; 794 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 795 /* 796 * Make sure this entry is complete. 797 */ 798 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 799 dprintf(stdout, "\n\t%scorrupted", 800 eap == buf ? "" : "remainder "); 801 break; 802 } 803 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 804 continue; 805 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 806 namespace_names[eap->ea_namespace], eap->ea_length, 807 eap->ea_namelength, eap->ea_name); 808 /* 809 * First we try the general attribute setting interface. 810 * However, some attributes can only be set by root or 811 * by using special interfaces (for example, ACLs). 812 */ 813 if (extattr_set_link(name, eap->ea_namespace, eap->ea_name, 814 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 815 dprintf(stdout, " (set using extattr_set_link)"); 816 continue; 817 } 818 /* 819 * If the general interface refuses to set the attribute, 820 * then we try all the specialized interfaces that we 821 * know about. 822 */ 823 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 824 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 825 if (acl_set_link_np(name, ACL_TYPE_ACCESS, 826 EXTATTR_CONTENT(eap)) != -1) { 827 dprintf(stdout, " (set using acl_set_link_np)"); 828 continue; 829 } 830 } 831 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 832 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 833 if (acl_set_link_np(name, ACL_TYPE_DEFAULT, 834 EXTATTR_CONTENT(eap)) != -1) { 835 dprintf(stdout, " (set using acl_set_link_np)"); 836 continue; 837 } 838 } 839 vprintf(stdout, " (unable to set)"); 840 } 841 vprintf(stdout, "\n"); 842 } 843 844 /* 845 * Set attributes on a file descriptor. 846 */ 847 static void 848 set_extattr_fd(int fd, char *name, void *buf, int size) 849 { 850 struct extattr *eap, *eaend; 851 852 vprintf(stdout, "Set attributes for %s:", name); 853 eaend = buf + size; 854 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 855 /* 856 * Make sure this entry is complete. 857 */ 858 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 859 dprintf(stdout, "\n\t%scorrupted", 860 eap == buf ? "" : "remainder "); 861 break; 862 } 863 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 864 continue; 865 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 866 namespace_names[eap->ea_namespace], eap->ea_length, 867 eap->ea_namelength, eap->ea_name); 868 /* 869 * First we try the general attribute setting interface. 870 * However, some attributes can only be set by root or 871 * by using special interfaces (for example, ACLs). 872 */ 873 if (extattr_set_fd(fd, eap->ea_namespace, eap->ea_name, 874 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 875 dprintf(stdout, " (set using extattr_set_fd)"); 876 continue; 877 } 878 /* 879 * If the general interface refuses to set the attribute, 880 * then we try all the specialized interfaces that we 881 * know about. 882 */ 883 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 884 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 885 if (acl_set_fd(fd, EXTATTR_CONTENT(eap)) != -1) { 886 dprintf(stdout, " (set using acl_set_fd)"); 887 continue; 888 } 889 } 890 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 891 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 892 if (acl_set_file(name, ACL_TYPE_DEFAULT, 893 EXTATTR_CONTENT(eap)) != -1) { 894 dprintf(stdout, " (set using acl_set_file)"); 895 continue; 896 } 897 } 898 vprintf(stdout, " (unable to set)"); 899 } 900 vprintf(stdout, "\n"); 901 } 902 903 /* 904 * skip over bit maps on the tape 905 */ 906 void 907 skipmaps(void) 908 { 909 910 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI) 911 skipfile(); 912 } 913 914 /* 915 * skip over a file on the tape 916 */ 917 void 918 skipfile(void) 919 { 920 921 curfile.action = SKIP; 922 getfile(xtrnull, xtrnull, xtrnull); 923 } 924 925 /* 926 * Extract a file from the tape. 927 * When an allocated block is found it is passed to the fill function; 928 * when an unallocated block (hole) is found, a zeroed buffer is passed 929 * to the skip function. 930 */ 931 void 932 getfile(void (*datafill)(char *, long), void (*attrfill)(char *, long), 933 void (*skip)(char *, long)) 934 { 935 int i; 936 off_t size; 937 int curblk, attrsize; 938 void (*fillit)(char *, long); 939 static char clearedbuf[MAXBSIZE]; 940 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; 941 char junk[TP_BSIZE]; 942 943 curblk = 0; 944 size = spcl.c_size; 945 attrsize = spcl.c_extsize; 946 if (spcl.c_type == TS_END) 947 panic("ran off end of tape\n"); 948 if (spcl.c_magic != FS_UFS2_MAGIC) 949 panic("not at beginning of a file\n"); 950 if (!gettingfile && setjmp(restart) != 0) 951 return; 952 gettingfile++; 953 fillit = datafill; 954 if (size == 0 && attrsize > 0) { 955 fillit = attrfill; 956 size = attrsize; 957 attrsize = 0; 958 } 959 loop: 960 for (i = 0; i < spcl.c_count; i++) { 961 if (!readmapflag && i > TP_NINDIR) { 962 if (Dflag) { 963 fprintf(stderr, "spcl.c_count = %jd\n", 964 (intmax_t)spcl.c_count); 965 break; 966 } else 967 panic("spcl.c_count = %jd\n", 968 (intmax_t)spcl.c_count); 969 } 970 if (readmapflag || spcl.c_addr[i]) { 971 readtape(&buf[curblk++][0]); 972 if (curblk == fssize / TP_BSIZE) { 973 (*fillit)((char *)buf, (long)(size > TP_BSIZE ? 974 fssize : (curblk - 1) * TP_BSIZE + size)); 975 curblk = 0; 976 } 977 } else { 978 if (curblk > 0) { 979 (*fillit)((char *)buf, (long)(size > TP_BSIZE ? 980 curblk * TP_BSIZE : 981 (curblk - 1) * TP_BSIZE + size)); 982 curblk = 0; 983 } 984 (*skip)(clearedbuf, (long)(size > TP_BSIZE ? 985 TP_BSIZE : size)); 986 } 987 if ((size -= TP_BSIZE) <= 0) { 988 if (size > -TP_BSIZE && curblk > 0) { 989 (*fillit)((char *)buf, 990 (long)((curblk * TP_BSIZE) + size)); 991 curblk = 0; 992 } 993 if (attrsize > 0) { 994 fillit = attrfill; 995 size = attrsize; 996 attrsize = 0; 997 continue; 998 } 999 if (spcl.c_count - i > 1) 1000 dprintf(stdout, "skipping %d junk block(s)\n", 1001 spcl.c_count - i - 1); 1002 for (i++; i < spcl.c_count; i++) { 1003 if (!readmapflag && i > TP_NINDIR) { 1004 if (Dflag) { 1005 fprintf(stderr, 1006 "spcl.c_count = %jd\n", 1007 (intmax_t)spcl.c_count); 1008 break; 1009 } else 1010 panic("spcl.c_count = %jd\n", 1011 (intmax_t)spcl.c_count); 1012 } 1013 if (readmapflag || spcl.c_addr[i]) 1014 readtape(junk); 1015 } 1016 break; 1017 } 1018 } 1019 if (gethead(&spcl) == GOOD && size > 0) { 1020 if (spcl.c_type == TS_ADDR) 1021 goto loop; 1022 dprintf(stdout, 1023 "Missing address (header) block for %s at %ld blocks\n", 1024 curfile.name, blksread); 1025 } 1026 if (curblk > 0) 1027 panic("getfile: lost data\n"); 1028 findinode(&spcl); 1029 gettingfile = 0; 1030 } 1031 1032 /* 1033 * These variables are shared between the next two functions. 1034 */ 1035 static int extbufsize = 0; 1036 static char *extbuf; 1037 static int extloc; 1038 1039 /* 1040 * Allocate a buffer into which to extract extended attributes. 1041 */ 1042 static char * 1043 setupextattr(int extsize) 1044 { 1045 1046 extloc = 0; 1047 if (extsize <= extbufsize) 1048 return (extbuf); 1049 if (extbufsize > 0) 1050 free(extbuf); 1051 if ((extbuf = malloc(extsize)) != NULL) { 1052 extbufsize = extsize; 1053 return (extbuf); 1054 } 1055 extbufsize = 0; 1056 extbuf = NULL; 1057 fprintf(stderr, "Cannot extract %d bytes %s for inode %d, name %s\n", 1058 extsize, "of extended attributes", curfile.ino, curfile.name); 1059 return (NULL); 1060 } 1061 1062 /* 1063 * Extract the next block of extended attributes. 1064 */ 1065 static void 1066 xtrattr(char *buf, long size) 1067 { 1068 1069 if (extloc + size > extbufsize) 1070 panic("overrun attribute buffer\n"); 1071 memmove(&extbuf[extloc], buf, size); 1072 extloc += size; 1073 } 1074 1075 /* 1076 * Write out the next block of a file. 1077 */ 1078 static void 1079 xtrfile(char *buf, long size) 1080 { 1081 1082 if (Nflag) 1083 return; 1084 if (write(ofile, buf, (int) size) == -1) { 1085 fprintf(stderr, 1086 "write error extracting inode %d, name %s\nwrite: %s\n", 1087 curfile.ino, curfile.name, strerror(errno)); 1088 } 1089 } 1090 1091 /* 1092 * Skip over a hole in a file. 1093 */ 1094 /* ARGSUSED */ 1095 static void 1096 xtrskip(char *buf, long size) 1097 { 1098 1099 if (lseek(ofile, size, SEEK_CUR) == -1) { 1100 fprintf(stderr, 1101 "seek error extracting inode %d, name %s\nlseek: %s\n", 1102 curfile.ino, curfile.name, strerror(errno)); 1103 done(1); 1104 } 1105 } 1106 1107 /* 1108 * Collect the next block of a symbolic link. 1109 */ 1110 static void 1111 xtrlnkfile(char *buf, long size) 1112 { 1113 1114 pathlen += size; 1115 if (pathlen > MAXPATHLEN) { 1116 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", 1117 curfile.name, lnkbuf, buf, pathlen); 1118 done(1); 1119 } 1120 (void) strcat(lnkbuf, buf); 1121 } 1122 1123 /* 1124 * Skip over a hole in a symbolic link (should never happen). 1125 */ 1126 /* ARGSUSED */ 1127 static void 1128 xtrlnkskip(char *buf, long size) 1129 { 1130 1131 fprintf(stderr, "unallocated block in symbolic link %s\n", 1132 curfile.name); 1133 done(1); 1134 } 1135 1136 /* 1137 * Collect the next block of a bit map. 1138 */ 1139 static void 1140 xtrmap(char *buf, long size) 1141 { 1142 1143 memmove(map, buf, size); 1144 map += size; 1145 } 1146 1147 /* 1148 * Skip over a hole in a bit map (should never happen). 1149 */ 1150 /* ARGSUSED */ 1151 static void 1152 xtrmapskip(char *buf, long size) 1153 { 1154 1155 panic("hole in map\n"); 1156 map += size; 1157 } 1158 1159 /* 1160 * Noop, when an extraction function is not needed. 1161 */ 1162 /* ARGSUSED */ 1163 void 1164 xtrnull(char *buf, long size) 1165 { 1166 1167 return; 1168 } 1169 1170 /* 1171 * Read TP_BSIZE blocks from the input. 1172 * Handle read errors, and end of media. 1173 */ 1174 static void 1175 readtape(char *buf) 1176 { 1177 long rd, newvol, i, oldnumtrec; 1178 int cnt, seek_failed; 1179 1180 if (blkcnt + (byteslide > 0) < numtrec) { 1181 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1182 blksread++; 1183 tapeaddr++; 1184 return; 1185 } 1186 if (numtrec > 0) 1187 memmove(&tapebuf[-TP_BSIZE], 1188 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE); 1189 oldnumtrec = numtrec; 1190 for (i = 0; i < ntrec; i++) 1191 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1192 if (numtrec == 0) 1193 numtrec = ntrec; 1194 cnt = ntrec * TP_BSIZE; 1195 rd = 0; 1196 getmore: 1197 #ifdef RRESTORE 1198 if (host) 1199 i = rmtread(&tapebuf[rd], cnt); 1200 else 1201 #endif 1202 i = read(mt, &tapebuf[rd], cnt); 1203 /* 1204 * Check for mid-tape short read error. 1205 * If found, skip rest of buffer and start with the next. 1206 */ 1207 if (!pipein && numtrec < ntrec && i > 0) { 1208 dprintf(stdout, "mid-media short read error.\n"); 1209 numtrec = ntrec; 1210 } 1211 /* 1212 * Handle partial block read. 1213 */ 1214 if (pipein && i == 0 && rd > 0) 1215 i = rd; 1216 else if (i > 0 && i != ntrec * TP_BSIZE) { 1217 if (pipein) { 1218 rd += i; 1219 cnt -= i; 1220 if (cnt > 0) 1221 goto getmore; 1222 i = rd; 1223 } else { 1224 /* 1225 * Short read. Process the blocks read. 1226 */ 1227 if (i % TP_BSIZE != 0) 1228 vprintf(stdout, 1229 "partial block read: %ld should be %ld\n", 1230 i, ntrec * TP_BSIZE); 1231 numtrec = i / TP_BSIZE; 1232 } 1233 } 1234 /* 1235 * Handle read error. 1236 */ 1237 if (i < 0) { 1238 fprintf(stderr, "Tape read error while "); 1239 switch (curfile.action) { 1240 default: 1241 fprintf(stderr, "trying to set up tape\n"); 1242 break; 1243 case UNKNOWN: 1244 fprintf(stderr, "trying to resynchronize\n"); 1245 break; 1246 case USING: 1247 fprintf(stderr, "restoring %s\n", curfile.name); 1248 break; 1249 case SKIP: 1250 fprintf(stderr, "skipping over inode %d\n", 1251 curfile.ino); 1252 break; 1253 } 1254 if (!yflag && !reply("continue")) 1255 done(1); 1256 i = ntrec * TP_BSIZE; 1257 memset(tapebuf, 0, i); 1258 #ifdef RRESTORE 1259 if (host) 1260 seek_failed = (rmtseek(i, 1) < 0); 1261 else 1262 #endif 1263 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1); 1264 1265 if (seek_failed) { 1266 fprintf(stderr, 1267 "continuation failed: %s\n", strerror(errno)); 1268 done(1); 1269 } 1270 } 1271 /* 1272 * Handle end of tape. 1273 */ 1274 if (i == 0) { 1275 vprintf(stdout, "End-of-tape encountered\n"); 1276 if (!pipein) { 1277 newvol = volno + 1; 1278 volno = 0; 1279 numtrec = 0; 1280 getvol(newvol); 1281 readtape(buf); 1282 return; 1283 } 1284 if (rd % TP_BSIZE != 0) 1285 panic("partial block read: %d should be %d\n", 1286 rd, ntrec * TP_BSIZE); 1287 terminateinput(); 1288 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE); 1289 } 1290 if (oldnumtrec == 0) 1291 blkcnt = 0; 1292 else 1293 blkcnt -= oldnumtrec; 1294 memmove(buf, 1295 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1296 blksread++; 1297 tapeaddr++; 1298 } 1299 1300 static void 1301 findtapeblksize(void) 1302 { 1303 long i; 1304 1305 for (i = 0; i < ntrec; i++) 1306 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1307 blkcnt = 0; 1308 #ifdef RRESTORE 1309 if (host) 1310 i = rmtread(tapebuf, ntrec * TP_BSIZE); 1311 else 1312 #endif 1313 i = read(mt, tapebuf, ntrec * TP_BSIZE); 1314 1315 if (i <= 0) { 1316 fprintf(stderr, "tape read error: %s\n", strerror(errno)); 1317 done(1); 1318 } 1319 if (i % TP_BSIZE != 0) { 1320 fprintf(stderr, "Tape block size (%ld) %s (%d)\n", 1321 i, "is not a multiple of dump block size", TP_BSIZE); 1322 done(1); 1323 } 1324 ntrec = i / TP_BSIZE; 1325 numtrec = ntrec; 1326 vprintf(stdout, "Tape block size is %ld\n", ntrec); 1327 } 1328 1329 void 1330 closemt(void) 1331 { 1332 1333 if (mt < 0) 1334 return; 1335 if (pipecmdin) { 1336 pclose(popenfp); 1337 popenfp = NULL; 1338 } else 1339 #ifdef RRESTORE 1340 if (host) 1341 rmtclose(); 1342 else 1343 #endif 1344 (void) close(mt); 1345 } 1346 1347 /* 1348 * Read the next block from the tape. 1349 * If it is not any valid header, return an error. 1350 */ 1351 static int 1352 gethead(struct s_spcl *buf) 1353 { 1354 long i; 1355 1356 readtape((char *)buf); 1357 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) { 1358 if (buf->c_magic == OFS_MAGIC) { 1359 fprintf(stderr, 1360 "Format of dump tape is too old. Must use\n"); 1361 fprintf(stderr, 1362 "a version of restore from before 2002.\n"); 1363 return (FAIL); 1364 } 1365 if (swabl(buf->c_magic) != FS_UFS2_MAGIC && 1366 buf->c_magic != NFS_MAGIC) { 1367 if (buf->c_magic == OFS_MAGIC) { 1368 fprintf(stderr, 1369 "Format of dump tape is too old. Must use\n"); 1370 fprintf(stderr, 1371 "a version of restore from before 2002.\n"); 1372 } 1373 return (FAIL); 1374 } 1375 if (!Bcvt) { 1376 vprintf(stdout, "Note: Doing Byte swapping\n"); 1377 Bcvt = 1; 1378 } 1379 } 1380 if (checksum((int *)buf) == FAIL) 1381 return (FAIL); 1382 if (Bcvt) { 1383 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf); 1384 swabst((u_char *)"l",(u_char *) &buf->c_level); 1385 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags); 1386 } 1387 readmapflag = 0; 1388 1389 switch (buf->c_type) { 1390 1391 case TS_CLRI: 1392 case TS_BITS: 1393 /* 1394 * Have to patch up missing information in bit map headers 1395 */ 1396 buf->c_size = buf->c_count * TP_BSIZE; 1397 if (buf->c_count > TP_NINDIR) 1398 readmapflag = 1; 1399 else 1400 for (i = 0; i < buf->c_count; i++) 1401 buf->c_addr[i]++; 1402 /* FALL THROUGH */ 1403 1404 case TS_TAPE: 1405 if (buf->c_magic == NFS_MAGIC && 1406 (buf->c_flags & NFS_DR_NEWINODEFMT) == 0) 1407 oldinofmt = 1; 1408 /* FALL THROUGH */ 1409 1410 case TS_END: 1411 buf->c_inumber = 0; 1412 /* FALL THROUGH */ 1413 1414 case TS_ADDR: 1415 case TS_INODE: 1416 /* 1417 * For old dump tapes, have to copy up old fields to 1418 * new locations. 1419 */ 1420 if (buf->c_magic == NFS_MAGIC) { 1421 buf->c_tapea = buf->c_old_tapea; 1422 buf->c_firstrec = buf->c_old_firstrec; 1423 buf->c_date = _time32_to_time(buf->c_old_date); 1424 buf->c_ddate = _time32_to_time(buf->c_old_ddate); 1425 buf->c_atime = _time32_to_time(buf->c_old_atime); 1426 buf->c_mtime = _time32_to_time(buf->c_old_mtime); 1427 buf->c_birthtime = 0; 1428 buf->c_birthtimensec = 0; 1429 buf->c_extsize = 0; 1430 } 1431 break; 1432 1433 default: 1434 panic("gethead: unknown inode type %d\n", buf->c_type); 1435 break; 1436 } 1437 if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate) 1438 fprintf(stderr, "Header with wrong dumpdate.\n"); 1439 /* 1440 * If we're restoring a filesystem with the old (FreeBSD 1) 1441 * format inodes, copy the uid/gid to the new location 1442 */ 1443 if (oldinofmt) { 1444 buf->c_uid = buf->c_spare1[1]; 1445 buf->c_gid = buf->c_spare1[2]; 1446 } 1447 buf->c_magic = FS_UFS2_MAGIC; 1448 tapeaddr = buf->c_tapea; 1449 if (dflag) 1450 accthdr(buf); 1451 return(GOOD); 1452 } 1453 1454 /* 1455 * Check that a header is where it belongs and predict the next header 1456 */ 1457 static void 1458 accthdr(struct s_spcl *header) 1459 { 1460 static ino_t previno = 0x7fffffff; 1461 static int prevtype; 1462 static long predict; 1463 long blks, i; 1464 1465 if (header->c_type == TS_TAPE) { 1466 fprintf(stderr, "Volume header "); 1467 if (header->c_firstrec) 1468 fprintf(stderr, "begins with record %qd", 1469 header->c_firstrec); 1470 fprintf(stderr, "\n"); 1471 previno = 0x7fffffff; 1472 return; 1473 } 1474 if (previno == 0x7fffffff) 1475 goto newcalc; 1476 switch (prevtype) { 1477 case TS_BITS: 1478 fprintf(stderr, "Dumped inodes map header"); 1479 break; 1480 case TS_CLRI: 1481 fprintf(stderr, "Used inodes map header"); 1482 break; 1483 case TS_INODE: 1484 fprintf(stderr, "File header, ino %d", previno); 1485 break; 1486 case TS_ADDR: 1487 fprintf(stderr, "File continuation header, ino %d", previno); 1488 break; 1489 case TS_END: 1490 fprintf(stderr, "End of tape header"); 1491 break; 1492 } 1493 if (predict != blksread - 1) 1494 fprintf(stderr, "; predicted %ld blocks, got %ld blocks", 1495 predict, blksread - 1); 1496 fprintf(stderr, "\n"); 1497 newcalc: 1498 blks = 0; 1499 if (header->c_type != TS_END) 1500 for (i = 0; i < header->c_count; i++) 1501 if (readmapflag || header->c_addr[i] != 0) 1502 blks++; 1503 predict = blks; 1504 blksread = 0; 1505 prevtype = header->c_type; 1506 previno = header->c_inumber; 1507 } 1508 1509 /* 1510 * Find an inode header. 1511 * Complain if had to skip. 1512 */ 1513 static void 1514 findinode(struct s_spcl *header) 1515 { 1516 static long skipcnt = 0; 1517 long i; 1518 char buf[TP_BSIZE]; 1519 int htype; 1520 1521 curfile.name = "<name unknown>"; 1522 curfile.action = UNKNOWN; 1523 curfile.mode = 0; 1524 curfile.ino = 0; 1525 do { 1526 htype = header->c_type; 1527 switch (htype) { 1528 1529 case TS_ADDR: 1530 /* 1531 * Skip up to the beginning of the next record 1532 */ 1533 for (i = 0; i < header->c_count; i++) 1534 if (header->c_addr[i]) 1535 readtape(buf); 1536 while (gethead(header) == FAIL || 1537 _time64_to_time(header->c_date) != dumpdate) { 1538 skipcnt++; 1539 if (Dflag) { 1540 byteslide++; 1541 if (byteslide < TP_BSIZE) { 1542 blkcnt--; 1543 blksread--; 1544 } else 1545 byteslide = 0; 1546 } 1547 } 1548 break; 1549 1550 case TS_INODE: 1551 curfile.mode = header->c_mode; 1552 curfile.uid = header->c_uid; 1553 curfile.gid = header->c_gid; 1554 curfile.file_flags = header->c_file_flags; 1555 curfile.rdev = header->c_rdev; 1556 curfile.atime_sec = header->c_atime; 1557 curfile.atime_nsec = header->c_atimensec; 1558 curfile.mtime_sec = header->c_mtime; 1559 curfile.mtime_nsec = header->c_mtimensec; 1560 curfile.birthtime_sec = header->c_birthtime; 1561 curfile.birthtime_nsec = header->c_birthtimensec; 1562 curfile.extsize = header->c_extsize; 1563 curfile.size = header->c_size; 1564 curfile.ino = header->c_inumber; 1565 break; 1566 1567 case TS_END: 1568 /* If we missed some tapes, get another volume. */ 1569 if (tapesread & (tapesread + 1)) { 1570 getvol(0); 1571 continue; 1572 } 1573 curfile.ino = maxino; 1574 break; 1575 1576 case TS_CLRI: 1577 curfile.name = "<file removal list>"; 1578 break; 1579 1580 case TS_BITS: 1581 curfile.name = "<file dump list>"; 1582 break; 1583 1584 case TS_TAPE: 1585 if (Dflag) 1586 fprintf(stderr, "unexpected tape header\n"); 1587 else 1588 panic("unexpected tape header\n"); 1589 1590 default: 1591 if (Dflag) 1592 fprintf(stderr, "unknown tape header type %d\n", 1593 spcl.c_type); 1594 else 1595 panic("unknown tape header type %d\n", 1596 spcl.c_type); 1597 while (gethead(header) == FAIL || 1598 _time64_to_time(header->c_date) != dumpdate) { 1599 skipcnt++; 1600 if (Dflag) { 1601 byteslide++; 1602 if (byteslide < TP_BSIZE) { 1603 blkcnt--; 1604 blksread--; 1605 } else 1606 byteslide = 0; 1607 } 1608 } 1609 1610 } 1611 } while (htype == TS_ADDR); 1612 if (skipcnt > 0) 1613 fprintf(stderr, "resync restore, skipped %ld %s\n", 1614 skipcnt, Dflag ? "bytes" : "blocks"); 1615 skipcnt = 0; 1616 } 1617 1618 static int 1619 checksum(int *buf) 1620 { 1621 int i, j; 1622 1623 j = sizeof(union u_spcl) / sizeof(int); 1624 i = 0; 1625 if (!Bcvt) { 1626 do 1627 i += *buf++; 1628 while (--j); 1629 } else { 1630 /* What happens if we want to read restore tapes 1631 for a 16bit int machine??? */ 1632 do 1633 i += swabl(*buf++); 1634 while (--j); 1635 } 1636 1637 if (i != CHECKSUM) { 1638 fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, 1639 curfile.ino, curfile.name); 1640 return(FAIL); 1641 } 1642 return(GOOD); 1643 } 1644 1645 #ifdef RRESTORE 1646 #include <stdarg.h> 1647 1648 void 1649 msg(const char *fmt, ...) 1650 { 1651 va_list ap; 1652 va_start(ap, fmt); 1653 (void)vfprintf(stderr, fmt, ap); 1654 va_end(ap); 1655 } 1656 #endif /* RRESTORE */ 1657 1658 static u_char * 1659 swabshort(u_char *sp, int n) 1660 { 1661 char c; 1662 1663 while (--n >= 0) { 1664 c = sp[0]; sp[0] = sp[1]; sp[1] = c; 1665 sp += 2; 1666 } 1667 return (sp); 1668 } 1669 1670 static u_char * 1671 swablong(u_char *sp, int n) 1672 { 1673 char c; 1674 1675 while (--n >= 0) { 1676 c = sp[0]; sp[0] = sp[3]; sp[3] = c; 1677 c = sp[2]; sp[2] = sp[1]; sp[1] = c; 1678 sp += 4; 1679 } 1680 return (sp); 1681 } 1682 1683 static u_char * 1684 swabquad(u_char *sp, int n) 1685 { 1686 char c; 1687 1688 while (--n >= 0) { 1689 c = sp[0]; sp[0] = sp[7]; sp[7] = c; 1690 c = sp[1]; sp[1] = sp[6]; sp[6] = c; 1691 c = sp[2]; sp[2] = sp[5]; sp[5] = c; 1692 c = sp[3]; sp[3] = sp[4]; sp[4] = c; 1693 sp += 8; 1694 } 1695 return (sp); 1696 } 1697 1698 void 1699 swabst(u_char *cp, u_char *sp) 1700 { 1701 int n = 0; 1702 1703 while (*cp) { 1704 switch (*cp) { 1705 case '0': case '1': case '2': case '3': case '4': 1706 case '5': case '6': case '7': case '8': case '9': 1707 n = (n * 10) + (*cp++ - '0'); 1708 continue; 1709 1710 case 's': case 'w': case 'h': 1711 if (n == 0) 1712 n = 1; 1713 sp = swabshort(sp, n); 1714 break; 1715 1716 case 'l': 1717 if (n == 0) 1718 n = 1; 1719 sp = swablong(sp, n); 1720 break; 1721 1722 case 'q': 1723 if (n == 0) 1724 n = 1; 1725 sp = swabquad(sp, n); 1726 break; 1727 1728 case 'b': 1729 if (n == 0) 1730 n = 1; 1731 sp += n; 1732 break; 1733 1734 default: 1735 fprintf(stderr, "Unknown conversion character: %c\n", 1736 *cp); 1737 done(0); 1738 break; 1739 } 1740 cp++; 1741 n = 0; 1742 } 1743 } 1744 1745 static u_long 1746 swabl(u_long x) 1747 { 1748 swabst((u_char *)"l", (u_char *)&x); 1749 return (x); 1750 } 1751