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 = %ju\n", (uintmax_t)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 %ju, name %s\n", 1054 extsize, "of extended attributes", (uintmax_t)curfile.ino, 1055 curfile.name); 1056 return (NULL); 1057 } 1058 1059 /* 1060 * Extract the next block of extended attributes. 1061 */ 1062 static void 1063 xtrattr(char *buf, long size) 1064 { 1065 1066 if (extloc + size > extbufsize) 1067 panic("overrun attribute buffer\n"); 1068 memmove(&extbuf[extloc], buf, size); 1069 extloc += size; 1070 } 1071 1072 /* 1073 * Write out the next block of a file. 1074 */ 1075 static void 1076 xtrfile(char *buf, long size) 1077 { 1078 1079 if (Nflag) 1080 return; 1081 if (write(ofile, buf, (int) size) == -1) { 1082 fprintf(stderr, 1083 "write error extracting inode %ju, name %s\nwrite: %s\n", 1084 (uintmax_t)curfile.ino, curfile.name, strerror(errno)); 1085 } 1086 } 1087 1088 /* 1089 * Skip over a hole in a file. 1090 */ 1091 /* ARGSUSED */ 1092 static void 1093 xtrskip(char *buf, long size) 1094 { 1095 1096 if (lseek(ofile, size, SEEK_CUR) == -1) { 1097 fprintf(stderr, 1098 "seek error extracting inode %ju, name %s\nlseek: %s\n", 1099 (uintmax_t)curfile.ino, curfile.name, strerror(errno)); 1100 done(1); 1101 } 1102 } 1103 1104 /* 1105 * Collect the next block of a symbolic link. 1106 */ 1107 static void 1108 xtrlnkfile(char *buf, long size) 1109 { 1110 1111 pathlen += size; 1112 if (pathlen > MAXPATHLEN) { 1113 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n", 1114 curfile.name, lnkbuf, buf, pathlen); 1115 done(1); 1116 } 1117 (void) strcat(lnkbuf, buf); 1118 } 1119 1120 /* 1121 * Skip over a hole in a symbolic link (should never happen). 1122 */ 1123 /* ARGSUSED */ 1124 static void 1125 xtrlnkskip(char *buf, long size) 1126 { 1127 1128 fprintf(stderr, "unallocated block in symbolic link %s\n", 1129 curfile.name); 1130 done(1); 1131 } 1132 1133 /* 1134 * Collect the next block of a bit map. 1135 */ 1136 static void 1137 xtrmap(char *buf, long size) 1138 { 1139 1140 memmove(map, buf, size); 1141 map += size; 1142 } 1143 1144 /* 1145 * Skip over a hole in a bit map (should never happen). 1146 */ 1147 /* ARGSUSED */ 1148 static void 1149 xtrmapskip(char *buf, long size) 1150 { 1151 1152 panic("hole in map\n"); 1153 map += size; 1154 } 1155 1156 /* 1157 * Noop, when an extraction function is not needed. 1158 */ 1159 /* ARGSUSED */ 1160 void 1161 xtrnull(char *buf, long size) 1162 { 1163 1164 return; 1165 } 1166 1167 /* 1168 * Read TP_BSIZE blocks from the input. 1169 * Handle read errors, and end of media. 1170 */ 1171 static void 1172 readtape(char *buf) 1173 { 1174 long rd, newvol, i, oldnumtrec; 1175 int cnt, seek_failed; 1176 1177 if (blkcnt + (byteslide > 0) < numtrec) { 1178 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1179 blksread++; 1180 tapeaddr++; 1181 return; 1182 } 1183 if (numtrec > 0) 1184 memmove(&tapebuf[-TP_BSIZE], 1185 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE); 1186 oldnumtrec = numtrec; 1187 for (i = 0; i < ntrec; i++) 1188 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1189 if (numtrec == 0) 1190 numtrec = ntrec; 1191 cnt = ntrec * TP_BSIZE; 1192 rd = 0; 1193 getmore: 1194 #ifdef RRESTORE 1195 if (host) 1196 i = rmtread(&tapebuf[rd], cnt); 1197 else 1198 #endif 1199 i = read(mt, &tapebuf[rd], cnt); 1200 /* 1201 * Check for mid-tape short read error. 1202 * If found, skip rest of buffer and start with the next. 1203 */ 1204 if (!pipein && !pipecmdin && numtrec < ntrec && i > 0) { 1205 dprintf(stdout, "mid-media short read error.\n"); 1206 numtrec = ntrec; 1207 } 1208 /* 1209 * Handle partial block read. 1210 */ 1211 if ((pipein || pipecmdin) && i == 0 && rd > 0) 1212 i = rd; 1213 else if (i > 0 && i != ntrec * TP_BSIZE) { 1214 if (pipein || pipecmdin) { 1215 rd += i; 1216 cnt -= i; 1217 if (cnt > 0) 1218 goto getmore; 1219 i = rd; 1220 } else { 1221 /* 1222 * Short read. Process the blocks read. 1223 */ 1224 if (i % TP_BSIZE != 0) 1225 vprintf(stdout, 1226 "partial block read: %ld should be %ld\n", 1227 i, ntrec * TP_BSIZE); 1228 numtrec = i / TP_BSIZE; 1229 } 1230 } 1231 /* 1232 * Handle read error. 1233 */ 1234 if (i < 0) { 1235 fprintf(stderr, "Tape read error while "); 1236 switch (curfile.action) { 1237 default: 1238 fprintf(stderr, "trying to set up tape\n"); 1239 break; 1240 case UNKNOWN: 1241 fprintf(stderr, "trying to resynchronize\n"); 1242 break; 1243 case USING: 1244 fprintf(stderr, "restoring %s\n", curfile.name); 1245 break; 1246 case SKIP: 1247 fprintf(stderr, "skipping over inode %ju\n", 1248 (uintmax_t)curfile.ino); 1249 break; 1250 } 1251 if (!yflag && !reply("continue")) 1252 done(1); 1253 i = ntrec * TP_BSIZE; 1254 memset(tapebuf, 0, i); 1255 #ifdef RRESTORE 1256 if (host) 1257 seek_failed = (rmtseek(i, 1) < 0); 1258 else 1259 #endif 1260 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1); 1261 1262 if (seek_failed) { 1263 fprintf(stderr, 1264 "continuation failed: %s\n", strerror(errno)); 1265 done(1); 1266 } 1267 } 1268 /* 1269 * Handle end of tape. 1270 */ 1271 if (i == 0) { 1272 vprintf(stdout, "End-of-tape encountered\n"); 1273 if (!pipein) { 1274 newvol = volno + 1; 1275 volno = 0; 1276 numtrec = 0; 1277 getvol(newvol); 1278 readtape(buf); 1279 return; 1280 } 1281 if (rd % TP_BSIZE != 0) 1282 panic("partial block read: %ld should be %ld\n", 1283 rd, ntrec * TP_BSIZE); 1284 terminateinput(); 1285 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE); 1286 } 1287 if (oldnumtrec == 0) 1288 blkcnt = 0; 1289 else 1290 blkcnt -= oldnumtrec; 1291 memmove(buf, 1292 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE); 1293 blksread++; 1294 tapeaddr++; 1295 } 1296 1297 static void 1298 findtapeblksize(void) 1299 { 1300 long i; 1301 1302 for (i = 0; i < ntrec; i++) 1303 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0; 1304 blkcnt = 0; 1305 #ifdef RRESTORE 1306 if (host) 1307 i = rmtread(tapebuf, ntrec * TP_BSIZE); 1308 else 1309 #endif 1310 i = read(mt, tapebuf, ntrec * TP_BSIZE); 1311 1312 if (i <= 0) { 1313 fprintf(stderr, "tape read error: %s\n", strerror(errno)); 1314 done(1); 1315 } 1316 if (i % TP_BSIZE != 0) { 1317 fprintf(stderr, "Tape block size (%ld) %s (%d)\n", 1318 i, "is not a multiple of dump block size", TP_BSIZE); 1319 done(1); 1320 } 1321 ntrec = i / TP_BSIZE; 1322 numtrec = ntrec; 1323 vprintf(stdout, "Tape block size is %ld\n", ntrec); 1324 } 1325 1326 void 1327 closemt(void) 1328 { 1329 1330 if (mt < 0) 1331 return; 1332 if (pipecmdin) { 1333 pclose(popenfp); 1334 popenfp = NULL; 1335 } else 1336 #ifdef RRESTORE 1337 if (host) 1338 rmtclose(); 1339 else 1340 #endif 1341 (void) close(mt); 1342 } 1343 1344 /* 1345 * Read the next block from the tape. 1346 * If it is not any valid header, return an error. 1347 */ 1348 static int 1349 gethead(struct s_spcl *buf) 1350 { 1351 long i; 1352 1353 readtape((char *)buf); 1354 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) { 1355 if (buf->c_magic == OFS_MAGIC) { 1356 fprintf(stderr, 1357 "Format of dump tape is too old. Must use\n"); 1358 fprintf(stderr, 1359 "a version of restore from before 2002.\n"); 1360 return (FAIL); 1361 } 1362 if (swabl(buf->c_magic) != FS_UFS2_MAGIC && 1363 buf->c_magic != NFS_MAGIC) { 1364 if (buf->c_magic == OFS_MAGIC) { 1365 fprintf(stderr, 1366 "Format of dump tape is too old. Must use\n"); 1367 fprintf(stderr, 1368 "a version of restore from before 2002.\n"); 1369 } 1370 return (FAIL); 1371 } 1372 if (!Bcvt) { 1373 vprintf(stdout, "Note: Doing Byte swapping\n"); 1374 Bcvt = 1; 1375 } 1376 } 1377 if (checksum((int *)buf) == FAIL) 1378 return (FAIL); 1379 if (Bcvt) { 1380 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf); 1381 swabst((u_char *)"l",(u_char *) &buf->c_level); 1382 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags); 1383 } 1384 readmapflag = 0; 1385 1386 switch (buf->c_type) { 1387 1388 case TS_CLRI: 1389 case TS_BITS: 1390 /* 1391 * Have to patch up missing information in bit map headers 1392 */ 1393 buf->c_size = buf->c_count * TP_BSIZE; 1394 if (buf->c_count > TP_NINDIR) 1395 readmapflag = 1; 1396 else 1397 for (i = 0; i < buf->c_count; i++) 1398 buf->c_addr[i]++; 1399 /* FALL THROUGH */ 1400 1401 case TS_TAPE: 1402 if (buf->c_magic == NFS_MAGIC && 1403 (buf->c_flags & NFS_DR_NEWINODEFMT) == 0) 1404 oldinofmt = 1; 1405 /* FALL THROUGH */ 1406 1407 case TS_END: 1408 buf->c_inumber = 0; 1409 /* FALL THROUGH */ 1410 1411 case TS_ADDR: 1412 case TS_INODE: 1413 /* 1414 * For old dump tapes, have to copy up old fields to 1415 * new locations. 1416 */ 1417 if (buf->c_magic == NFS_MAGIC) { 1418 buf->c_tapea = buf->c_old_tapea; 1419 buf->c_firstrec = buf->c_old_firstrec; 1420 buf->c_date = _time32_to_time(buf->c_old_date); 1421 buf->c_ddate = _time32_to_time(buf->c_old_ddate); 1422 buf->c_atime = _time32_to_time(buf->c_old_atime); 1423 buf->c_mtime = _time32_to_time(buf->c_old_mtime); 1424 buf->c_birthtime = 0; 1425 buf->c_birthtimensec = 0; 1426 buf->c_extsize = 0; 1427 } 1428 break; 1429 1430 default: 1431 panic("gethead: unknown inode type %d\n", buf->c_type); 1432 break; 1433 } 1434 if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate) 1435 fprintf(stderr, "Header with wrong dumpdate.\n"); 1436 /* 1437 * If we're restoring a filesystem with the old (FreeBSD 1) 1438 * format inodes, copy the uid/gid to the new location 1439 */ 1440 if (oldinofmt) { 1441 buf->c_uid = buf->c_spare1[1]; 1442 buf->c_gid = buf->c_spare1[2]; 1443 } 1444 buf->c_magic = FS_UFS2_MAGIC; 1445 tapeaddr = buf->c_tapea; 1446 if (dflag) 1447 accthdr(buf); 1448 return(GOOD); 1449 } 1450 1451 /* 1452 * Check that a header is where it belongs and predict the next header 1453 */ 1454 static void 1455 accthdr(struct s_spcl *header) 1456 { 1457 static ino_t previno = 0x7fffffff; 1458 static int prevtype; 1459 static long predict; 1460 long blks, i; 1461 1462 if (header->c_type == TS_TAPE) { 1463 fprintf(stderr, "Volume header "); 1464 if (header->c_firstrec) 1465 fprintf(stderr, "begins with record %jd", 1466 (intmax_t)header->c_firstrec); 1467 fprintf(stderr, "\n"); 1468 previno = 0x7fffffff; 1469 return; 1470 } 1471 if (previno == 0x7fffffff) 1472 goto newcalc; 1473 switch (prevtype) { 1474 case TS_BITS: 1475 fprintf(stderr, "Dumped inodes map header"); 1476 break; 1477 case TS_CLRI: 1478 fprintf(stderr, "Used inodes map header"); 1479 break; 1480 case TS_INODE: 1481 fprintf(stderr, "File header, ino %ju", (uintmax_t)previno); 1482 break; 1483 case TS_ADDR: 1484 fprintf(stderr, "File continuation header, ino %ju", 1485 (uintmax_t)previno); 1486 break; 1487 case TS_END: 1488 fprintf(stderr, "End of tape header"); 1489 break; 1490 } 1491 if (predict != blksread - 1) 1492 fprintf(stderr, "; predicted %ld blocks, got %ld blocks", 1493 predict, blksread - 1); 1494 fprintf(stderr, "\n"); 1495 newcalc: 1496 blks = 0; 1497 if (header->c_type != TS_END) 1498 for (i = 0; i < header->c_count; i++) 1499 if (readmapflag || header->c_addr[i] != 0) 1500 blks++; 1501 predict = blks; 1502 blksread = 0; 1503 prevtype = header->c_type; 1504 previno = header->c_inumber; 1505 } 1506 1507 /* 1508 * Find an inode header. 1509 * Complain if had to skip. 1510 */ 1511 static void 1512 findinode(struct s_spcl *header) 1513 { 1514 static long skipcnt = 0; 1515 long i; 1516 char buf[TP_BSIZE]; 1517 int htype; 1518 1519 curfile.name = "<name unknown>"; 1520 curfile.action = UNKNOWN; 1521 curfile.mode = 0; 1522 curfile.ino = 0; 1523 do { 1524 htype = header->c_type; 1525 switch (htype) { 1526 1527 case TS_ADDR: 1528 /* 1529 * Skip up to the beginning of the next record 1530 */ 1531 for (i = 0; i < header->c_count; i++) 1532 if (header->c_addr[i]) 1533 readtape(buf); 1534 while (gethead(header) == FAIL || 1535 _time64_to_time(header->c_date) != dumpdate) { 1536 skipcnt++; 1537 if (Dflag) { 1538 byteslide++; 1539 if (byteslide < TP_BSIZE) { 1540 blkcnt--; 1541 blksread--; 1542 } else 1543 byteslide = 0; 1544 } 1545 } 1546 break; 1547 1548 case TS_INODE: 1549 curfile.mode = header->c_mode; 1550 curfile.uid = header->c_uid; 1551 curfile.gid = header->c_gid; 1552 curfile.file_flags = header->c_file_flags; 1553 curfile.rdev = header->c_rdev; 1554 curfile.atime_sec = header->c_atime; 1555 curfile.atime_nsec = header->c_atimensec; 1556 curfile.mtime_sec = header->c_mtime; 1557 curfile.mtime_nsec = header->c_mtimensec; 1558 curfile.birthtime_sec = header->c_birthtime; 1559 curfile.birthtime_nsec = header->c_birthtimensec; 1560 curfile.extsize = header->c_extsize; 1561 curfile.size = header->c_size; 1562 curfile.ino = header->c_inumber; 1563 break; 1564 1565 case TS_END: 1566 /* If we missed some tapes, get another volume. */ 1567 if (tapesread & (tapesread + 1)) { 1568 getvol(0); 1569 continue; 1570 } 1571 curfile.ino = maxino; 1572 break; 1573 1574 case TS_CLRI: 1575 curfile.name = "<file removal list>"; 1576 break; 1577 1578 case TS_BITS: 1579 curfile.name = "<file dump list>"; 1580 break; 1581 1582 case TS_TAPE: 1583 if (Dflag) 1584 fprintf(stderr, "unexpected tape header\n"); 1585 else 1586 panic("unexpected tape header\n"); 1587 1588 default: 1589 if (Dflag) 1590 fprintf(stderr, "unknown tape header type %d\n", 1591 spcl.c_type); 1592 else 1593 panic("unknown tape header type %d\n", 1594 spcl.c_type); 1595 while (gethead(header) == FAIL || 1596 _time64_to_time(header->c_date) != dumpdate) { 1597 skipcnt++; 1598 if (Dflag) { 1599 byteslide++; 1600 if (byteslide < TP_BSIZE) { 1601 blkcnt--; 1602 blksread--; 1603 } else 1604 byteslide = 0; 1605 } 1606 } 1607 1608 } 1609 } while (htype == TS_ADDR); 1610 if (skipcnt > 0) 1611 fprintf(stderr, "resync restore, skipped %ld %s\n", 1612 skipcnt, Dflag ? "bytes" : "blocks"); 1613 skipcnt = 0; 1614 } 1615 1616 static int 1617 checksum(int *buf) 1618 { 1619 int i, j; 1620 1621 j = sizeof(union u_spcl) / sizeof(int); 1622 i = 0; 1623 if (!Bcvt) { 1624 do 1625 i += *buf++; 1626 while (--j); 1627 } else { 1628 /* What happens if we want to read restore tapes 1629 for a 16bit int machine??? */ 1630 do 1631 i += swabl(*buf++); 1632 while (--j); 1633 } 1634 1635 if (i != CHECKSUM) { 1636 fprintf(stderr, "Checksum error %o, inode %ju file %s\n", i, 1637 (uintmax_t)curfile.ino, curfile.name); 1638 return(FAIL); 1639 } 1640 return(GOOD); 1641 } 1642 1643 #ifdef RRESTORE 1644 #include <stdarg.h> 1645 1646 void 1647 msg(const char *fmt, ...) 1648 { 1649 va_list ap; 1650 va_start(ap, fmt); 1651 (void)vfprintf(stderr, fmt, ap); 1652 va_end(ap); 1653 } 1654 #endif /* RRESTORE */ 1655 1656 static u_char * 1657 swabshort(u_char *sp, int n) 1658 { 1659 char c; 1660 1661 while (--n >= 0) { 1662 c = sp[0]; sp[0] = sp[1]; sp[1] = c; 1663 sp += 2; 1664 } 1665 return (sp); 1666 } 1667 1668 static u_char * 1669 swablong(u_char *sp, int n) 1670 { 1671 char c; 1672 1673 while (--n >= 0) { 1674 c = sp[0]; sp[0] = sp[3]; sp[3] = c; 1675 c = sp[2]; sp[2] = sp[1]; sp[1] = c; 1676 sp += 4; 1677 } 1678 return (sp); 1679 } 1680 1681 static u_char * 1682 swabquad(u_char *sp, int n) 1683 { 1684 char c; 1685 1686 while (--n >= 0) { 1687 c = sp[0]; sp[0] = sp[7]; sp[7] = c; 1688 c = sp[1]; sp[1] = sp[6]; sp[6] = c; 1689 c = sp[2]; sp[2] = sp[5]; sp[5] = c; 1690 c = sp[3]; sp[3] = sp[4]; sp[4] = c; 1691 sp += 8; 1692 } 1693 return (sp); 1694 } 1695 1696 void 1697 swabst(u_char *cp, u_char *sp) 1698 { 1699 int n = 0; 1700 1701 while (*cp) { 1702 switch (*cp) { 1703 case '0': case '1': case '2': case '3': case '4': 1704 case '5': case '6': case '7': case '8': case '9': 1705 n = (n * 10) + (*cp++ - '0'); 1706 continue; 1707 1708 case 's': case 'w': case 'h': 1709 if (n == 0) 1710 n = 1; 1711 sp = swabshort(sp, n); 1712 break; 1713 1714 case 'l': 1715 if (n == 0) 1716 n = 1; 1717 sp = swablong(sp, n); 1718 break; 1719 1720 case 'q': 1721 if (n == 0) 1722 n = 1; 1723 sp = swabquad(sp, n); 1724 break; 1725 1726 case 'b': 1727 if (n == 0) 1728 n = 1; 1729 sp += n; 1730 break; 1731 1732 default: 1733 fprintf(stderr, "Unknown conversion character: %c\n", 1734 *cp); 1735 done(0); 1736 break; 1737 } 1738 cp++; 1739 n = 0; 1740 } 1741 } 1742 1743 static u_long 1744 swabl(u_long x) 1745 { 1746 swabst((u_char *)"l", (u_char *)&x); 1747 return (x); 1748 } 1749