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 = curfile.uid; 586 gid = curfile.gid; 587 mode = curfile.mode; 588 flags = curfile.file_flags; 589 switch (mode & IFMT) { 590 591 default: 592 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode); 593 skipfile(); 594 return (FAIL); 595 596 case IFSOCK: 597 vprintf(stdout, "skipped socket %s\n", name); 598 skipfile(); 599 return (GOOD); 600 601 case IFDIR: 602 if (mflag) { 603 ep = lookupname(name); 604 if (ep == NULL || ep->e_flags & EXTRACT) 605 panic("unextracted directory %s\n", name); 606 skipfile(); 607 return (GOOD); 608 } 609 vprintf(stdout, "extract file %s\n", name); 610 return (genliteraldir(name, curfile.ino)); 611 612 case IFLNK: 613 lnkbuf[0] = '\0'; 614 pathlen = 0; 615 buf = setupextattr(extsize); 616 getfile(xtrlnkfile, xtrattr, xtrlnkskip); 617 if (pathlen == 0) { 618 vprintf(stdout, 619 "%s: zero length symbolic link (ignored)\n", name); 620 return (GOOD); 621 } 622 if (linkit(lnkbuf, name, SYMLINK) == GOOD) { 623 if (extsize > 0) 624 set_extattr_link(name, buf, extsize); 625 (void) lchown(name, uid, gid); 626 (void) lchmod(name, mode); 627 (void) lutimes(name, ctimep); 628 (void) lutimes(name, mtimep); 629 (void) lchflags(name, flags); 630 return (GOOD); 631 } 632 return (FAIL); 633 634 case IFIFO: 635 vprintf(stdout, "extract fifo %s\n", name); 636 if (Nflag) { 637 skipfile(); 638 return (GOOD); 639 } 640 if (uflag) 641 (void) unlink(name); 642 if (mkfifo(name, 0600) < 0) { 643 fprintf(stderr, "%s: cannot create fifo: %s\n", 644 name, strerror(errno)); 645 skipfile(); 646 return (FAIL); 647 } 648 if (extsize == 0) { 649 skipfile(); 650 } else { 651 buf = setupextattr(extsize); 652 getfile(xtrnull, xtrattr, xtrnull); 653 set_extattr_file(name, buf, extsize); 654 } 655 (void) chown(name, uid, gid); 656 (void) chmod(name, mode); 657 (void) utimes(name, ctimep); 658 (void) utimes(name, mtimep); 659 (void) chflags(name, flags); 660 return (GOOD); 661 662 case IFCHR: 663 case IFBLK: 664 vprintf(stdout, "extract special file %s\n", name); 665 if (Nflag) { 666 skipfile(); 667 return (GOOD); 668 } 669 if (uflag) 670 (void) unlink(name); 671 if (mknod(name, (mode & (IFCHR | IFBLK)) | 0600, 672 (int)curfile.rdev) < 0) { 673 fprintf(stderr, "%s: cannot create special file: %s\n", 674 name, strerror(errno)); 675 skipfile(); 676 return (FAIL); 677 } 678 if (extsize == 0) { 679 skipfile(); 680 } else { 681 buf = setupextattr(extsize); 682 getfile(xtrnull, xtrattr, xtrnull); 683 set_extattr_file(name, buf, extsize); 684 } 685 (void) chown(name, uid, gid); 686 (void) chmod(name, mode); 687 (void) utimes(name, ctimep); 688 (void) utimes(name, mtimep); 689 (void) chflags(name, flags); 690 return (GOOD); 691 692 case IFREG: 693 vprintf(stdout, "extract file %s\n", name); 694 if (Nflag) { 695 skipfile(); 696 return (GOOD); 697 } 698 if (uflag) 699 (void) unlink(name); 700 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC, 701 0600)) < 0) { 702 fprintf(stderr, "%s: cannot create file: %s\n", 703 name, strerror(errno)); 704 skipfile(); 705 return (FAIL); 706 } 707 buf = setupextattr(extsize); 708 getfile(xtrfile, xtrattr, xtrskip); 709 if (extsize > 0) 710 set_extattr_fd(ofile, name, buf, extsize); 711 (void) fchown(ofile, uid, gid); 712 (void) fchmod(ofile, mode); 713 (void) futimes(ofile, ctimep); 714 (void) futimes(ofile, mtimep); 715 (void) fchflags(ofile, flags); 716 (void) close(ofile); 717 return (GOOD); 718 } 719 /* NOTREACHED */ 720 } 721 722 /* 723 * Set attributes for a file. 724 */ 725 void 726 set_extattr_file(char *name, void *buf, int size) 727 { 728 struct extattr *eap, *eaend; 729 730 vprintf(stdout, "Set attributes for %s:", name); 731 eaend = buf + size; 732 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 733 /* 734 * Make sure this entry is complete. 735 */ 736 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 737 dprintf(stdout, "\n\t%scorrupted", 738 eap == buf ? "" : "remainder "); 739 break; 740 } 741 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 742 continue; 743 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 744 namespace_names[eap->ea_namespace], eap->ea_length, 745 eap->ea_namelength, eap->ea_name); 746 /* 747 * First we try the general attribute setting interface. 748 * However, some attributes can only be set by root or 749 * by using special interfaces (for example, ACLs). 750 */ 751 if (extattr_set_file(name, eap->ea_namespace, eap->ea_name, 752 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 753 dprintf(stdout, " (set using extattr_set_file)"); 754 continue; 755 } 756 /* 757 * If the general interface refuses to set the attribute, 758 * then we try all the specialized interfaces that we 759 * know about. 760 */ 761 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 762 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 763 if (acl_set_file(name, ACL_TYPE_ACCESS, 764 EXTATTR_CONTENT(eap)) != -1) { 765 dprintf(stdout, " (set using acl_set_file)"); 766 continue; 767 } 768 } 769 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 770 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 771 if (acl_set_file(name, ACL_TYPE_DEFAULT, 772 EXTATTR_CONTENT(eap)) != -1) { 773 dprintf(stdout, " (set using acl_set_file)"); 774 continue; 775 } 776 } 777 vprintf(stdout, " (unable to set)"); 778 } 779 vprintf(stdout, "\n"); 780 } 781 782 /* 783 * Set attributes for a symbolic link. 784 */ 785 static void 786 set_extattr_link(char *name, void *buf, int size) 787 { 788 struct extattr *eap, *eaend; 789 790 vprintf(stdout, "Set attributes for %s:", name); 791 eaend = buf + size; 792 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 793 /* 794 * Make sure this entry is complete. 795 */ 796 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 797 dprintf(stdout, "\n\t%scorrupted", 798 eap == buf ? "" : "remainder "); 799 break; 800 } 801 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 802 continue; 803 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 804 namespace_names[eap->ea_namespace], eap->ea_length, 805 eap->ea_namelength, eap->ea_name); 806 /* 807 * First we try the general attribute setting interface. 808 * However, some attributes can only be set by root or 809 * by using special interfaces (for example, ACLs). 810 */ 811 if (extattr_set_link(name, eap->ea_namespace, eap->ea_name, 812 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 813 dprintf(stdout, " (set using extattr_set_link)"); 814 continue; 815 } 816 /* 817 * If the general interface refuses to set the attribute, 818 * then we try all the specialized interfaces that we 819 * know about. 820 */ 821 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 822 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 823 if (acl_set_link_np(name, ACL_TYPE_ACCESS, 824 EXTATTR_CONTENT(eap)) != -1) { 825 dprintf(stdout, " (set using acl_set_link_np)"); 826 continue; 827 } 828 } 829 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 830 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 831 if (acl_set_link_np(name, ACL_TYPE_DEFAULT, 832 EXTATTR_CONTENT(eap)) != -1) { 833 dprintf(stdout, " (set using acl_set_link_np)"); 834 continue; 835 } 836 } 837 vprintf(stdout, " (unable to set)"); 838 } 839 vprintf(stdout, "\n"); 840 } 841 842 /* 843 * Set attributes on a file descriptor. 844 */ 845 static void 846 set_extattr_fd(int fd, char *name, void *buf, int size) 847 { 848 struct extattr *eap, *eaend; 849 850 vprintf(stdout, "Set attributes for %s:", name); 851 eaend = buf + size; 852 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) { 853 /* 854 * Make sure this entry is complete. 855 */ 856 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) { 857 dprintf(stdout, "\n\t%scorrupted", 858 eap == buf ? "" : "remainder "); 859 break; 860 } 861 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY) 862 continue; 863 vprintf(stdout, "\n\t%s, (%d bytes), %*s", 864 namespace_names[eap->ea_namespace], eap->ea_length, 865 eap->ea_namelength, eap->ea_name); 866 /* 867 * First we try the general attribute setting interface. 868 * However, some attributes can only be set by root or 869 * by using special interfaces (for example, ACLs). 870 */ 871 if (extattr_set_fd(fd, eap->ea_namespace, eap->ea_name, 872 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) { 873 dprintf(stdout, " (set using extattr_set_fd)"); 874 continue; 875 } 876 /* 877 * If the general interface refuses to set the attribute, 878 * then we try all the specialized interfaces that we 879 * know about. 880 */ 881 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 882 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) { 883 if (acl_set_fd(fd, EXTATTR_CONTENT(eap)) != -1) { 884 dprintf(stdout, " (set using acl_set_fd)"); 885 continue; 886 } 887 } 888 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM && 889 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) { 890 if (acl_set_file(name, ACL_TYPE_DEFAULT, 891 EXTATTR_CONTENT(eap)) != -1) { 892 dprintf(stdout, " (set using acl_set_file)"); 893 continue; 894 } 895 } 896 vprintf(stdout, " (unable to set)"); 897 } 898 vprintf(stdout, "\n"); 899 } 900 901 /* 902 * skip over bit maps on the tape 903 */ 904 void 905 skipmaps(void) 906 { 907 908 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI) 909 skipfile(); 910 } 911 912 /* 913 * skip over a file on the tape 914 */ 915 void 916 skipfile(void) 917 { 918 919 curfile.action = SKIP; 920 getfile(xtrnull, xtrnull, xtrnull); 921 } 922 923 /* 924 * Extract a file from the tape. 925 * When an allocated block is found it is passed to the fill function; 926 * when an unallocated block (hole) is found, a zeroed buffer is passed 927 * to the skip function. 928 */ 929 void 930 getfile(void (*datafill)(char *, long), void (*attrfill)(char *, long), 931 void (*skip)(char *, long)) 932 { 933 int i; 934 off_t size; 935 int curblk, attrsize; 936 void (*fillit)(char *, long); 937 static char clearedbuf[MAXBSIZE]; 938 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE]; 939 char junk[TP_BSIZE]; 940 941 curblk = 0; 942 size = spcl.c_size; 943 attrsize = spcl.c_extsize; 944 if (spcl.c_type == TS_END) 945 panic("ran off end of tape\n"); 946 if (spcl.c_magic != FS_UFS2_MAGIC) 947 panic("not at beginning of a file\n"); 948 if (!gettingfile && setjmp(restart) != 0) 949 return; 950 gettingfile++; 951 fillit = datafill; 952 if (size == 0 && attrsize > 0) { 953 fillit = attrfill; 954 size = attrsize; 955 attrsize = 0; 956 } 957 loop: 958 for (i = 0; i < spcl.c_count; i++) { 959 if (!readmapflag && i > TP_NINDIR) { 960 if (Dflag) { 961 fprintf(stderr, "spcl.c_count = %jd\n", 962 (intmax_t)spcl.c_count); 963 break; 964 } else 965 panic("spcl.c_count = %jd\n", 966 (intmax_t)spcl.c_count); 967 } 968 if (readmapflag || spcl.c_addr[i]) { 969 readtape(&buf[curblk++][0]); 970 if (curblk == fssize / TP_BSIZE) { 971 (*fillit)((char *)buf, (long)(size > TP_BSIZE ? 972 fssize : (curblk - 1) * TP_BSIZE + size)); 973 curblk = 0; 974 } 975 } else { 976 if (curblk > 0) { 977 (*fillit)((char *)buf, (long)(size > TP_BSIZE ? 978 curblk * TP_BSIZE : 979 (curblk - 1) * TP_BSIZE + size)); 980 curblk = 0; 981 } 982 (*skip)(clearedbuf, (long)(size > TP_BSIZE ? 983 TP_BSIZE : size)); 984 } 985 if ((size -= TP_BSIZE) <= 0) { 986 if (size > -TP_BSIZE && curblk > 0) { 987 (*fillit)((char *)buf, 988 (long)((curblk * TP_BSIZE) + size)); 989 curblk = 0; 990 } 991 if (attrsize > 0) { 992 fillit = attrfill; 993 size = attrsize; 994 attrsize = 0; 995 continue; 996 } 997 if (spcl.c_count - i > 1) 998 dprintf(stdout, "skipping %d junk block(s)\n", 999 spcl.c_count - i - 1); 1000 for (i++; i < spcl.c_count; i++) { 1001 if (!readmapflag && i > TP_NINDIR) { 1002 if (Dflag) { 1003 fprintf(stderr, 1004 "spcl.c_count = %jd\n", 1005 (intmax_t)spcl.c_count); 1006 break; 1007 } else 1008 panic("spcl.c_count = %jd\n", 1009 (intmax_t)spcl.c_count); 1010 } 1011 if (readmapflag || spcl.c_addr[i]) 1012 readtape(junk); 1013 } 1014 break; 1015 } 1016 } 1017 if (gethead(&spcl) == GOOD && size > 0) { 1018 if (spcl.c_type == TS_ADDR) 1019 goto loop; 1020 dprintf(stdout, 1021 "Missing address (header) block for %s at %ld blocks\n", 1022 curfile.name, blksread); 1023 } 1024 if (curblk > 0) 1025 panic("getfile: lost data\n"); 1026 findinode(&spcl); 1027 gettingfile = 0; 1028 } 1029 1030 /* 1031 * These variables are shared between the next two functions. 1032 */ 1033 static int extbufsize = 0; 1034 static char *extbuf; 1035 static int extloc; 1036 1037 /* 1038 * Allocate a buffer into which to extract extended attributes. 1039 */ 1040 static char * 1041 setupextattr(int extsize) 1042 { 1043 1044 extloc = 0; 1045 if (extsize <= extbufsize) 1046 return (extbuf); 1047 if (extbufsize > 0) 1048 free(extbuf); 1049 if ((extbuf = malloc(extsize)) != NULL) { 1050 extbufsize = extsize; 1051 return (extbuf); 1052 } 1053 extbufsize = 0; 1054 extbuf = NULL; 1055 fprintf(stderr, "Cannot extract %d bytes %s for inode %d, name %s\n", 1056 extsize, "of extended attributes", curfile.ino, curfile.name); 1057 return (NULL); 1058 } 1059 1060 /* 1061 * Extract the next block of extended attributes. 1062 */ 1063 static void 1064 xtrattr(char *buf, long size) 1065 { 1066 1067 if (extloc + size > extbufsize) 1068 panic("overrun attribute buffer\n"); 1069 memmove(&extbuf[extloc], buf, size); 1070 extloc += size; 1071 } 1072 1073 /* 1074 * Write out the next block of a file. 1075 */ 1076 static void 1077 xtrfile(char *buf, long size) 1078 { 1079 1080 if (Nflag) 1081 return; 1082 if (write(ofile, buf, (int) size) == -1) { 1083 fprintf(stderr, 1084 "write error extracting inode %d, name %s\nwrite: %s\n", 1085 curfile.ino, curfile.name, strerror(errno)); 1086 } 1087 } 1088 1089 /* 1090 * Skip over a hole in a file. 1091 */ 1092 /* ARGSUSED */ 1093 static void 1094 xtrskip(char *buf, long size) 1095 { 1096 1097 if (lseek(ofile, size, SEEK_CUR) == -1) { 1098 fprintf(stderr, 1099 "seek error extracting inode %d, name %s\nlseek: %s\n", 1100 curfile.ino, curfile.name, strerror(errno)); 1101 done(1); 1102 } 1103 } 1104 1105 /* 1106 * Collect the next block of a symbolic link. 1107 */ 1108 static void 1109 xtrlnkfile(char *buf, long size) 1110 { 1111 1112 pathlen += size; 1113 if (pathlen > MAXPATHLEN) { 1114 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", 1115 curfile.name, lnkbuf, buf, pathlen); 1116 done(1); 1117 } 1118 (void) strcat(lnkbuf, buf); 1119 } 1120 1121 /* 1122 * Skip over a hole in a symbolic link (should never happen). 1123 */ 1124 /* ARGSUSED */ 1125 static void 1126 xtrlnkskip(char *buf, long size) 1127 { 1128 1129 fprintf(stderr, "unallocated block in symbolic link %s\n", 1130 curfile.name); 1131 done(1); 1132 } 1133 1134 /* 1135 * Collect the next block of a bit map. 1136 */ 1137 static void 1138 xtrmap(char *buf, long size) 1139 { 1140 1141 memmove(map, buf, size); 1142 map += size; 1143 } 1144 1145 /* 1146 * Skip over a hole in a bit map (should never happen). 1147 */ 1148 /* ARGSUSED */ 1149 static void 1150 xtrmapskip(char *buf, long size) 1151 { 1152 1153 panic("hole in map\n"); 1154 map += size; 1155 } 1156 1157 /* 1158 * Noop, when an extraction function is not needed. 1159 */ 1160 /* ARGSUSED */ 1161 void 1162 xtrnull(char *buf, long size) 1163 { 1164 1165 return; 1166 } 1167 1168 /* 1169 * Read TP_BSIZE blocks from the input. 1170 * Handle read errors, and end of media. 1171 */ 1172 static void 1173 readtape(char *buf) 1174 { 1175 long rd, newvol, i, oldnumtrec; 1176 int cnt, seek_failed; 1177 1178 if (blkcnt + (byteslide > 0) < numtrec) { 1179 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1180 blksread++; 1181 tapeaddr++; 1182 return; 1183 } 1184 if (numtrec > 0) 1185 memmove(&tapebuf[-TP_BSIZE], 1186 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE); 1187 oldnumtrec = numtrec; 1188 for (i = 0; i < ntrec; i++) 1189 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1190 if (numtrec == 0) 1191 numtrec = ntrec; 1192 cnt = ntrec * TP_BSIZE; 1193 rd = 0; 1194 getmore: 1195 #ifdef RRESTORE 1196 if (host) 1197 i = rmtread(&tapebuf[rd], cnt); 1198 else 1199 #endif 1200 i = read(mt, &tapebuf[rd], cnt); 1201 /* 1202 * Check for mid-tape short read error. 1203 * If found, skip rest of buffer and start with the next. 1204 */ 1205 if (!pipein && numtrec < ntrec && i > 0) { 1206 dprintf(stdout, "mid-media short read error.\n"); 1207 numtrec = ntrec; 1208 } 1209 /* 1210 * Handle partial block read. 1211 */ 1212 if (pipein && i == 0 && rd > 0) 1213 i = rd; 1214 else if (i > 0 && i != ntrec * TP_BSIZE) { 1215 if (pipein) { 1216 rd += i; 1217 cnt -= i; 1218 if (cnt > 0) 1219 goto getmore; 1220 i = rd; 1221 } else { 1222 /* 1223 * Short read. Process the blocks read. 1224 */ 1225 if (i % TP_BSIZE != 0) 1226 vprintf(stdout, 1227 "partial block read: %ld should be %ld\n", 1228 i, ntrec * TP_BSIZE); 1229 numtrec = i / TP_BSIZE; 1230 } 1231 } 1232 /* 1233 * Handle read error. 1234 */ 1235 if (i < 0) { 1236 fprintf(stderr, "Tape read error while "); 1237 switch (curfile.action) { 1238 default: 1239 fprintf(stderr, "trying to set up tape\n"); 1240 break; 1241 case UNKNOWN: 1242 fprintf(stderr, "trying to resynchronize\n"); 1243 break; 1244 case USING: 1245 fprintf(stderr, "restoring %s\n", curfile.name); 1246 break; 1247 case SKIP: 1248 fprintf(stderr, "skipping over inode %d\n", 1249 curfile.ino); 1250 break; 1251 } 1252 if (!yflag && !reply("continue")) 1253 done(1); 1254 i = ntrec * TP_BSIZE; 1255 memset(tapebuf, 0, i); 1256 #ifdef RRESTORE 1257 if (host) 1258 seek_failed = (rmtseek(i, 1) < 0); 1259 else 1260 #endif 1261 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1); 1262 1263 if (seek_failed) { 1264 fprintf(stderr, 1265 "continuation failed: %s\n", strerror(errno)); 1266 done(1); 1267 } 1268 } 1269 /* 1270 * Handle end of tape. 1271 */ 1272 if (i == 0) { 1273 vprintf(stdout, "End-of-tape encountered\n"); 1274 if (!pipein) { 1275 newvol = volno + 1; 1276 volno = 0; 1277 numtrec = 0; 1278 getvol(newvol); 1279 readtape(buf); 1280 return; 1281 } 1282 if (rd % TP_BSIZE != 0) 1283 panic("partial block read: %d should be %d\n", 1284 rd, ntrec * TP_BSIZE); 1285 terminateinput(); 1286 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE); 1287 } 1288 if (oldnumtrec == 0) 1289 blkcnt = 0; 1290 else 1291 blkcnt -= oldnumtrec; 1292 memmove(buf, 1293 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1294 blksread++; 1295 tapeaddr++; 1296 } 1297 1298 static void 1299 findtapeblksize(void) 1300 { 1301 long i; 1302 1303 for (i = 0; i < ntrec; i++) 1304 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1305 blkcnt = 0; 1306 #ifdef RRESTORE 1307 if (host) 1308 i = rmtread(tapebuf, ntrec * TP_BSIZE); 1309 else 1310 #endif 1311 i = read(mt, tapebuf, ntrec * TP_BSIZE); 1312 1313 if (i <= 0) { 1314 fprintf(stderr, "tape read error: %s\n", strerror(errno)); 1315 done(1); 1316 } 1317 if (i % TP_BSIZE != 0) { 1318 fprintf(stderr, "Tape block size (%ld) %s (%d)\n", 1319 i, "is not a multiple of dump block size", TP_BSIZE); 1320 done(1); 1321 } 1322 ntrec = i / TP_BSIZE; 1323 numtrec = ntrec; 1324 vprintf(stdout, "Tape block size is %ld\n", ntrec); 1325 } 1326 1327 void 1328 closemt(void) 1329 { 1330 1331 if (mt < 0) 1332 return; 1333 if (pipecmdin) { 1334 pclose(popenfp); 1335 popenfp = NULL; 1336 } else 1337 #ifdef RRESTORE 1338 if (host) 1339 rmtclose(); 1340 else 1341 #endif 1342 (void) close(mt); 1343 } 1344 1345 /* 1346 * Read the next block from the tape. 1347 * If it is not any valid header, return an error. 1348 */ 1349 static int 1350 gethead(struct s_spcl *buf) 1351 { 1352 long i; 1353 1354 readtape((char *)buf); 1355 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) { 1356 if (buf->c_magic == OFS_MAGIC) { 1357 fprintf(stderr, 1358 "Format of dump tape is too old. Must use\n"); 1359 fprintf(stderr, 1360 "a version of restore from before 2002.\n"); 1361 return (FAIL); 1362 } 1363 if (swabl(buf->c_magic) != FS_UFS2_MAGIC && 1364 buf->c_magic != NFS_MAGIC) { 1365 if (buf->c_magic == OFS_MAGIC) { 1366 fprintf(stderr, 1367 "Format of dump tape is too old. Must use\n"); 1368 fprintf(stderr, 1369 "a version of restore from before 2002.\n"); 1370 } 1371 return (FAIL); 1372 } 1373 if (!Bcvt) { 1374 vprintf(stdout, "Note: Doing Byte swapping\n"); 1375 Bcvt = 1; 1376 } 1377 } 1378 if (checksum((int *)buf) == FAIL) 1379 return (FAIL); 1380 if (_time64_to_time(buf->c_date) != dumpdate) 1381 fprintf(stderr, "Header with wrong dumpdate.\n"); 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_inumber = 0; 1397 buf->c_size = buf->c_count * TP_BSIZE; 1398 if (buf->c_count > TP_NINDIR) 1399 readmapflag = 1; 1400 else 1401 for (i = 0; i < buf->c_count; i++) 1402 buf->c_addr[i]++; 1403 break; 1404 1405 case TS_TAPE: 1406 if (buf->c_magic == NFS_MAGIC) { 1407 if ((buf->c_flags & NFS_DR_NEWINODEFMT) == 0) 1408 oldinofmt = 1; 1409 buf->c_date = _time32_to_time(buf->c_old_date); 1410 buf->c_ddate = _time32_to_time(buf->c_old_ddate); 1411 buf->c_tapea = buf->c_old_tapea; 1412 buf->c_firstrec = buf->c_old_firstrec; 1413 } 1414 case TS_END: 1415 buf->c_inumber = 0; 1416 break; 1417 1418 case TS_INODE: 1419 /* 1420 * For old dump tapes, have to copy up old fields to 1421 * new locations. 1422 */ 1423 if (buf->c_magic == NFS_MAGIC) { 1424 buf->c_tapea = buf->c_old_tapea; 1425 buf->c_firstrec = buf->c_old_firstrec; 1426 buf->c_date = _time32_to_time(buf->c_old_date); 1427 buf->c_ddate = _time32_to_time(buf->c_old_ddate); 1428 buf->c_atime = _time32_to_time(buf->c_old_atime); 1429 buf->c_mtime = _time32_to_time(buf->c_old_mtime); 1430 } 1431 break; 1432 1433 case TS_ADDR: 1434 break; 1435 1436 default: 1437 panic("gethead: unknown inode type %d\n", buf->c_type); 1438 break; 1439 } 1440 /* 1441 * If we're restoring a filesystem with the old (FreeBSD 1) 1442 * format inodes, copy the uid/gid to the new location 1443 */ 1444 if (oldinofmt) { 1445 buf->c_uid = buf->c_spare1[1]; 1446 buf->c_gid = buf->c_spare1[2]; 1447 } 1448 buf->c_magic = FS_UFS2_MAGIC; 1449 tapeaddr = buf->c_tapea; 1450 if (dflag) 1451 accthdr(buf); 1452 return(GOOD); 1453 } 1454 1455 /* 1456 * Check that a header is where it belongs and predict the next header 1457 */ 1458 static void 1459 accthdr(struct s_spcl *header) 1460 { 1461 static ino_t previno = 0x7fffffff; 1462 static int prevtype; 1463 static long predict; 1464 long blks, i; 1465 1466 if (header->c_type == TS_TAPE) { 1467 fprintf(stderr, "Volume header "); 1468 if (header->c_firstrec) 1469 fprintf(stderr, "begins with record %qd", 1470 header->c_firstrec); 1471 fprintf(stderr, "\n"); 1472 previno = 0x7fffffff; 1473 return; 1474 } 1475 if (previno == 0x7fffffff) 1476 goto newcalc; 1477 switch (prevtype) { 1478 case TS_BITS: 1479 fprintf(stderr, "Dumped inodes map header"); 1480 break; 1481 case TS_CLRI: 1482 fprintf(stderr, "Used inodes map header"); 1483 break; 1484 case TS_INODE: 1485 fprintf(stderr, "File header, ino %d", previno); 1486 break; 1487 case TS_ADDR: 1488 fprintf(stderr, "File continuation header, ino %d", previno); 1489 break; 1490 case TS_END: 1491 fprintf(stderr, "End of tape header"); 1492 break; 1493 } 1494 if (predict != blksread - 1) 1495 fprintf(stderr, "; predicted %ld blocks, got %ld blocks", 1496 predict, blksread - 1); 1497 fprintf(stderr, "\n"); 1498 newcalc: 1499 blks = 0; 1500 if (header->c_type != TS_END) 1501 for (i = 0; i < header->c_count; i++) 1502 if (readmapflag || header->c_addr[i] != 0) 1503 blks++; 1504 predict = blks; 1505 blksread = 0; 1506 prevtype = header->c_type; 1507 previno = header->c_inumber; 1508 } 1509 1510 /* 1511 * Find an inode header. 1512 * Complain if had to skip. 1513 */ 1514 static void 1515 findinode(struct s_spcl *header) 1516 { 1517 static long skipcnt = 0; 1518 long i; 1519 char buf[TP_BSIZE]; 1520 int htype; 1521 1522 curfile.name = "<name unknown>"; 1523 curfile.action = UNKNOWN; 1524 curfile.mode = 0; 1525 curfile.ino = 0; 1526 do { 1527 htype = header->c_type; 1528 switch (htype) { 1529 1530 case TS_ADDR: 1531 /* 1532 * Skip up to the beginning of the next record 1533 */ 1534 for (i = 0; i < header->c_count; i++) 1535 if (header->c_addr[i]) 1536 readtape(buf); 1537 while (gethead(header) == FAIL || 1538 _time64_to_time(header->c_date) != dumpdate) { 1539 skipcnt++; 1540 if (Dflag) { 1541 byteslide++; 1542 if (byteslide < TP_BSIZE) { 1543 blkcnt--; 1544 blksread--; 1545 } else 1546 byteslide = 0; 1547 } 1548 } 1549 break; 1550 1551 case TS_INODE: 1552 curfile.mode = header->c_mode; 1553 curfile.uid = header->c_uid; 1554 curfile.gid = header->c_gid; 1555 curfile.file_flags = header->c_file_flags; 1556 curfile.rdev = header->c_rdev; 1557 curfile.atime_sec = header->c_atime; 1558 curfile.atime_nsec = header->c_atimensec; 1559 curfile.mtime_sec = header->c_mtime; 1560 curfile.mtime_nsec = header->c_mtimensec; 1561 curfile.birthtime_sec = header->c_birthtime; 1562 curfile.birthtime_nsec = header->c_birthtimensec; 1563 curfile.extsize = header->c_extsize; 1564 curfile.size = header->c_size; 1565 curfile.ino = header->c_inumber; 1566 break; 1567 1568 case TS_END: 1569 /* If we missed some tapes, get another volume. */ 1570 if (tapesread & (tapesread + 1)) { 1571 getvol(0); 1572 continue; 1573 } 1574 curfile.ino = maxino; 1575 break; 1576 1577 case TS_CLRI: 1578 curfile.name = "<file removal list>"; 1579 break; 1580 1581 case TS_BITS: 1582 curfile.name = "<file dump list>"; 1583 break; 1584 1585 case TS_TAPE: 1586 if (Dflag) 1587 fprintf(stderr, "unexpected tape header\n"); 1588 else 1589 panic("unexpected tape header\n"); 1590 1591 default: 1592 if (Dflag) 1593 fprintf(stderr, "unknown tape header type %d\n", 1594 spcl.c_type); 1595 else 1596 panic("unknown tape header type %d\n", 1597 spcl.c_type); 1598 while (gethead(header) == FAIL || 1599 _time64_to_time(header->c_date) != dumpdate) { 1600 skipcnt++; 1601 if (Dflag) { 1602 byteslide++; 1603 if (byteslide < TP_BSIZE) { 1604 blkcnt--; 1605 blksread--; 1606 } else 1607 byteslide = 0; 1608 } 1609 } 1610 1611 } 1612 } while (htype == TS_ADDR); 1613 if (skipcnt > 0) 1614 fprintf(stderr, "resync restore, skipped %ld %s\n", 1615 skipcnt, Dflag ? "bytes" : "blocks"); 1616 skipcnt = 0; 1617 } 1618 1619 static int 1620 checksum(int *buf) 1621 { 1622 int i, j; 1623 1624 j = sizeof(union u_spcl) / sizeof(int); 1625 i = 0; 1626 if (!Bcvt) { 1627 do 1628 i += *buf++; 1629 while (--j); 1630 } else { 1631 /* What happens if we want to read restore tapes 1632 for a 16bit int machine??? */ 1633 do 1634 i += swabl(*buf++); 1635 while (--j); 1636 } 1637 1638 if (i != CHECKSUM) { 1639 fprintf(stderr, "Checksum error %o, inode %d file %s\n", i, 1640 curfile.ino, curfile.name); 1641 return(FAIL); 1642 } 1643 return(GOOD); 1644 } 1645 1646 #ifdef RRESTORE 1647 #include <stdarg.h> 1648 1649 void 1650 msg(const char *fmt, ...) 1651 { 1652 va_list ap; 1653 va_start(ap, fmt); 1654 (void)vfprintf(stderr, fmt, ap); 1655 va_end(ap); 1656 } 1657 #endif /* RRESTORE */ 1658 1659 static u_char * 1660 swabshort(u_char *sp, int n) 1661 { 1662 char c; 1663 1664 while (--n >= 0) { 1665 c = sp[0]; sp[0] = sp[1]; sp[1] = c; 1666 sp += 2; 1667 } 1668 return (sp); 1669 } 1670 1671 static u_char * 1672 swablong(u_char *sp, int n) 1673 { 1674 char c; 1675 1676 while (--n >= 0) { 1677 c = sp[0]; sp[0] = sp[3]; sp[3] = c; 1678 c = sp[2]; sp[2] = sp[1]; sp[1] = c; 1679 sp += 4; 1680 } 1681 return (sp); 1682 } 1683 1684 static u_char * 1685 swabquad(u_char *sp, int n) 1686 { 1687 char c; 1688 1689 while (--n >= 0) { 1690 c = sp[0]; sp[0] = sp[7]; sp[7] = c; 1691 c = sp[1]; sp[1] = sp[6]; sp[6] = c; 1692 c = sp[2]; sp[2] = sp[5]; sp[5] = c; 1693 c = sp[3]; sp[3] = sp[4]; sp[4] = c; 1694 sp += 8; 1695 } 1696 return (sp); 1697 } 1698 1699 void 1700 swabst(u_char *cp, u_char *sp) 1701 { 1702 int n = 0; 1703 1704 while (*cp) { 1705 switch (*cp) { 1706 case '0': case '1': case '2': case '3': case '4': 1707 case '5': case '6': case '7': case '8': case '9': 1708 n = (n * 10) + (*cp++ - '0'); 1709 continue; 1710 1711 case 's': case 'w': case 'h': 1712 if (n == 0) 1713 n = 1; 1714 sp = swabshort(sp, n); 1715 break; 1716 1717 case 'l': 1718 if (n == 0) 1719 n = 1; 1720 sp = swablong(sp, n); 1721 break; 1722 1723 case 'q': 1724 if (n == 0) 1725 n = 1; 1726 sp = swabquad(sp, n); 1727 break; 1728 1729 case 'b': 1730 if (n == 0) 1731 n = 1; 1732 sp += n; 1733 break; 1734 1735 default: 1736 fprintf(stderr, "Unknown conversion character: %c\n", 1737 *cp); 1738 done(0); 1739 break; 1740 } 1741 cp++; 1742 n = 0; 1743 } 1744 } 1745 1746 static u_long 1747 swabl(u_long x) 1748 { 1749 swabst((u_char *)"l", (u_char *)&x); 1750 return (x); 1751 } 1752