projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 31cef89c | 1 | static char *sccsid = "@(#)tar.c 4.1 (Berkeley) 10/1/80"; |
| 415c8aef BJ |
2 | #include <stdio.h> |
| 3 | #include <sys/types.h> | |
| 4 | #include <sys/stat.h> | |
| 5 | #include <sys/dir.h> | |
| 6 | #include <signal.h> | |
| 7 | ||
| 8 | char *sprintf(); | |
| 9 | char *strcat(); | |
| 10 | daddr_t bsrch(); | |
| 11 | #define TBLOCK 512 | |
| 12 | #define NBLOCK 40 | |
| 13 | #define NAMSIZ 100 | |
| 14 | union hblock { | |
| 15 | char dummy[TBLOCK]; | |
| 16 | struct header { | |
| 17 | char name[NAMSIZ]; | |
| 18 | char mode[8]; | |
| 19 | char uid[8]; | |
| 20 | char gid[8]; | |
| 21 | char size[12]; | |
| 22 | char mtime[12]; | |
| 23 | char chksum[8]; | |
| 24 | char linkflag; | |
| 25 | char linkname[NAMSIZ]; | |
| 26 | } dbuf; | |
| 27 | } dblock, tbuf[NBLOCK]; | |
| 28 | ||
| 29 | struct linkbuf { | |
| 30 | ino_t inum; | |
| 31 | dev_t devnum; | |
| 32 | int count; | |
| 33 | char pathname[NAMSIZ]; | |
| 34 | struct linkbuf *nextp; | |
| 35 | } *ihead; | |
| 36 | ||
| 37 | struct stat stbuf; | |
| 38 | ||
| 39 | int rflag, xflag, vflag, tflag, mt, cflag, mflag, fflag, oflag, pflag; | |
| 40 | int term, chksum, wflag, recno, first, linkerrok; | |
| 41 | int freemem = 1; | |
| 42 | int nblock = 1; | |
| 43 | ||
| 44 | daddr_t low; | |
| 45 | daddr_t high; | |
| 46 | ||
| 47 | FILE *tfile; | |
| 48 | char tname[] = "/tmp/tarXXXXXX"; | |
| 49 | ||
| 50 | ||
| 51 | char *usefile; | |
| 52 | char magtape[] = "/dev/rmt8"; | |
| 53 | ||
| 54 | char *malloc(); | |
| 55 | ||
| 56 | main(argc, argv) | |
| 57 | int argc; | |
| 58 | char *argv[]; | |
| 59 | { | |
| 60 | char *cp; | |
| 61 | int onintr(), onquit(), onhup(), onterm(); | |
| 62 | ||
| 63 | if (argc < 2) | |
| 64 | usage(); | |
| 65 | ||
| 66 | tfile = NULL; | |
| 67 | usefile = magtape; | |
| 68 | argv[argc] = 0; | |
| 69 | argv++; | |
| 70 | for (cp = *argv++; *cp; cp++) | |
| 71 | switch(*cp) { | |
| 72 | case 'f': | |
| 73 | usefile = *argv++; | |
| 74 | fflag++; | |
| 75 | if (nblock == 1) | |
| 76 | nblock = 0; | |
| 77 | break; | |
| 78 | case 'c': | |
| 79 | cflag++; | |
| 80 | rflag++; | |
| 81 | break; | |
| 82 | case 'o': | |
| 83 | oflag++; | |
| 84 | break; | |
| 85 | case 'p': | |
| 86 | pflag++; | |
| 87 | break; | |
| 88 | case 'u': | |
| 89 | mktemp(tname); | |
| 90 | if ((tfile = fopen(tname, "w")) == NULL) { | |
| 91 | fprintf(stderr, "Tar: cannot create temporary file (%s)\n", tname); | |
| 92 | done(1); | |
| 93 | } | |
| 94 | fprintf(tfile, "!!!!!/!/!/!/!/!/!/! 000\n"); | |
| 95 | /* FALL THROUGH */ | |
| 96 | case 'r': | |
| 97 | rflag++; | |
| 98 | noupdate: | |
| 99 | if (nblock != 1 && cflag == 0) { | |
| 100 | fprintf(stderr, "Tar: Blocked tapes cannot be updated (yet)\n"); | |
| 101 | done(1); | |
| 102 | } | |
| 103 | break; | |
| 104 | case 'v': | |
| 105 | vflag++; | |
| 106 | break; | |
| 107 | case 'w': | |
| 108 | wflag++; | |
| 109 | break; | |
| 110 | case 'x': | |
| 111 | xflag++; | |
| 112 | break; | |
| 113 | case 't': | |
| 114 | tflag++; | |
| 115 | break; | |
| 116 | case 'm': | |
| 117 | mflag++; | |
| 118 | break; | |
| 119 | case '-': | |
| 120 | break; | |
| 121 | case '0': | |
| 122 | case '1': | |
| 123 | case '4': | |
| 124 | case '5': | |
| 125 | case '7': | |
| 126 | case '8': | |
| 127 | magtape[8] = *cp; | |
| 128 | usefile = magtape; | |
| 129 | break; | |
| 130 | case 'b': | |
| 131 | nblock = atoi(*argv++); | |
| 132 | if (nblock > NBLOCK || nblock <= 0) { | |
| 133 | fprintf(stderr, "Invalid blocksize. (Max %d)\n", NBLOCK); | |
| 134 | done(1); | |
| 135 | } | |
| 136 | if (rflag && !cflag) | |
| 137 | goto noupdate; | |
| 138 | break; | |
| 139 | case 'l': | |
| 140 | linkerrok++; | |
| 141 | break; | |
| 142 | default: | |
| 143 | fprintf(stderr, "tar: %c: unknown option\n", *cp); | |
| 144 | usage(); | |
| 145 | } | |
| 146 | ||
| 147 | if (rflag) { | |
| 148 | if (cflag && tfile != NULL) { | |
| 149 | usage(); | |
| 150 | done(1); | |
| 151 | } | |
| 152 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) | |
| 153 | signal(SIGINT, onintr); | |
| 154 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) | |
| 155 | signal(SIGHUP, onhup); | |
| 156 | if (signal(SIGQUIT, SIG_IGN) != SIG_IGN) | |
| 157 | signal(SIGQUIT, onquit); | |
| 158 | /* | |
| 159 | if (signal(SIGTERM, SIG_IGN) != SIG_IGN) | |
| 160 | signal(SIGTERM, onterm); | |
| 161 | */ | |
| 162 | if (strcmp(usefile, "-") == 0) { | |
| 163 | if (cflag == 0) { | |
| 164 | fprintf(stderr, "Can only create standard output archives\n"); | |
| 165 | done(1); | |
| 166 | } | |
| 167 | mt = dup(1); | |
| 168 | nblock = 1; | |
| 169 | } | |
| 170 | else if ((mt = open(usefile, 2)) < 0) { | |
| 171 | if (cflag == 0 || (mt = creat(usefile, 0666)) < 0) { | |
| 172 | fprintf(stderr, "tar: cannot open %s\n", usefile); | |
| 173 | done(1); | |
| 174 | } | |
| 175 | } | |
| 176 | if (cflag == 0 && nblock == 0) | |
| 177 | nblock = 1; | |
| 178 | dorep(argv); | |
| 179 | } | |
| 180 | else if (xflag) { | |
| 181 | if (strcmp(usefile, "-") == 0) { | |
| 182 | mt = dup(0); | |
| 183 | nblock = 1; | |
| 184 | } | |
| 185 | else if ((mt = open(usefile, 0)) < 0) { | |
| 186 | fprintf(stderr, "tar: cannot open %s\n", usefile); | |
| 187 | done(1); | |
| 188 | } | |
| 189 | doxtract(argv); | |
| 190 | } | |
| 191 | else if (tflag) { | |
| 192 | if (strcmp(usefile, "-") == 0) { | |
| 193 | mt = dup(0); | |
| 194 | nblock = 1; | |
| 195 | } | |
| 196 | else if ((mt = open(usefile, 0)) < 0) { | |
| 197 | fprintf(stderr, "tar: cannot open %s\n", usefile); | |
| 198 | done(1); | |
| 199 | } | |
| 200 | dotable(); | |
| 201 | } | |
| 202 | else | |
| 203 | usage(); | |
| 204 | done(0); | |
| 205 | } | |
| 206 | ||
| 207 | usage() | |
| 208 | { | |
| 209 | fprintf(stderr, "tar: usage tar -{txru}[cvfblm] [tapefile] [blocksize] file1 file2...\n"); | |
| 210 | done(1); | |
| 211 | } | |
| 212 | ||
| 213 | dorep(argv) | |
| 214 | char *argv[]; | |
| 215 | { | |
| 216 | register char *cp, *cp2; | |
| 217 | char wdir[60]; | |
| 218 | ||
| 219 | if (!cflag) { | |
| 220 | getdir(); | |
| 221 | do { | |
| 222 | passtape(); | |
| 223 | if (term) | |
| 224 | done(0); | |
| 225 | getdir(); | |
| 226 | } while (!endtape()); | |
| 227 | if (tfile != NULL) { | |
| 228 | char buf[200]; | |
| 229 | ||
| 230 | strcat(buf, "sort +0 -1 +1nr "); | |
| 231 | strcat(buf, tname); | |
| 232 | strcat(buf, " -o "); | |
| 233 | strcat(buf, tname); | |
| 234 | sprintf(buf, "sort +0 -1 +1nr %s -o %s; awk '$1 != prev {print; prev=$1}' %s >%sX;mv %sX %s", | |
| 235 | tname, tname, tname, tname, tname, tname); | |
| 236 | fflush(tfile); | |
| 237 | system(buf); | |
| 238 | freopen(tname, "r", tfile); | |
| 239 | fstat(fileno(tfile), &stbuf); | |
| 240 | high = stbuf.st_size; | |
| 241 | } | |
| 242 | } | |
| 243 | ||
| 244 | getwdir(wdir); | |
| 245 | while (*argv && ! term) { | |
| 246 | cp2 = *argv; | |
| 247 | if (!strcmp(cp2, "-C") && argv[1]) { | |
| 248 | argv++; | |
| 249 | if (chdir(*argv) < 0) | |
| 250 | perror(*argv); | |
| 251 | else | |
| 252 | getwdir(wdir); | |
| 253 | argv++; | |
| 254 | continue; | |
| 255 | } | |
| 256 | for (cp = *argv; *cp; cp++) | |
| 257 | if (*cp == '/') | |
| 258 | cp2 = cp; | |
| 259 | if (cp2 != *argv) { | |
| 260 | *cp2 = '\0'; | |
| 261 | chdir(*argv); | |
| 262 | *cp2 = '/'; | |
| 263 | cp2++; | |
| 264 | } | |
| 265 | putfile(*argv++, cp2); | |
| 266 | chdir(wdir); | |
| 267 | } | |
| 268 | putempty(); | |
| 269 | putempty(); | |
| 270 | flushtape(); | |
| 271 | if (linkerrok == 1) | |
| 272 | for (; ihead != NULL; ihead = ihead->nextp) | |
| 273 | if (ihead->count != 0) | |
| 274 | fprintf(stderr, "Missing links to %s\n", ihead->pathname); | |
| 275 | } | |
| 276 | ||
| 277 | endtape() | |
| 278 | { | |
| 279 | if (dblock.dbuf.name[0] == '\0') { | |
| 280 | backtape(); | |
| 281 | return(1); | |
| 282 | } | |
| 283 | else | |
| 284 | return(0); | |
| 285 | } | |
| 286 | ||
| 287 | getdir() | |
| 288 | { | |
| 289 | register struct stat *sp; | |
| 290 | int i; | |
| 291 | ||
| 292 | readtape( (char *) &dblock); | |
| 293 | if (dblock.dbuf.name[0] == '\0') | |
| 294 | return; | |
| 295 | sp = &stbuf; | |
| 296 | sscanf(dblock.dbuf.mode, "%o", &i); | |
| 297 | sp->st_mode = i; | |
| 298 | sscanf(dblock.dbuf.uid, "%o", &i); | |
| 299 | sp->st_uid = i; | |
| 300 | sscanf(dblock.dbuf.gid, "%o", &i); | |
| 301 | sp->st_gid = i; | |
| 302 | sscanf(dblock.dbuf.size, "%lo", &sp->st_size); | |
| 303 | sscanf(dblock.dbuf.mtime, "%lo", &sp->st_mtime); | |
| 304 | sscanf(dblock.dbuf.chksum, "%o", &chksum); | |
| 305 | if (chksum != checksum()) { | |
| 306 | fprintf(stderr, "directory checksum error\n"); | |
| 307 | done(2); | |
| 308 | } | |
| 309 | if (tfile != NULL) | |
| 310 | fprintf(tfile, "%s %s\n", dblock.dbuf.name, dblock.dbuf.mtime); | |
| 311 | } | |
| 312 | ||
| 313 | passtape() | |
| 314 | { | |
| 315 | long blocks; | |
| 316 | char buf[TBLOCK]; | |
| 317 | ||
| 318 | if (dblock.dbuf.linkflag == '1') | |
| 319 | return; | |
| 320 | blocks = stbuf.st_size; | |
| 321 | blocks += TBLOCK-1; | |
| 322 | blocks /= TBLOCK; | |
| 323 | ||
| 324 | while (blocks-- > 0) | |
| 325 | readtape(buf); | |
| 326 | } | |
| 327 | ||
| 328 | putfile(longname, shortname) | |
| 329 | char *longname; | |
| 330 | char *shortname; | |
| 331 | { | |
| 332 | int infile; | |
| 333 | long blocks; | |
| 334 | char buf[TBLOCK]; | |
| 335 | register char *cp, *cp2; | |
| 336 | struct direct dbuf; | |
| 337 | int i, j; | |
| 338 | ||
| 339 | infile = open(shortname, 0); | |
| 340 | if (infile < 0) { | |
| 341 | fprintf(stderr, "tar: %s: cannot open file\n", longname); | |
| 342 | return; | |
| 343 | } | |
| 344 | ||
| 345 | fstat(infile, &stbuf); | |
| 346 | ||
| 347 | if (tfile != NULL && checkupdate(longname) == 0) { | |
| 348 | close(infile); | |
| 349 | return; | |
| 350 | } | |
| 351 | if (checkw('r', longname) == 0) { | |
| 352 | close(infile); | |
| 353 | return; | |
| 354 | } | |
| 355 | ||
| 356 | if ((stbuf.st_mode & S_IFMT) == S_IFDIR) { | |
| 357 | for (i = 0, cp = buf; *cp++ = longname[i++];); | |
| 358 | *--cp = '/'; | |
| 359 | *++cp = 0 ; | |
| 360 | i = 0; | |
| 361 | if (!oflag) { | |
| 362 | if( (cp - buf) >= NAMSIZ) { | |
| 363 | fprintf(stderr, "%s: file name too long\n", longname); | |
| 364 | close(infile); | |
| 365 | return; | |
| 366 | } | |
| 367 | stbuf.st_size = 0; | |
| 368 | tomodes(&stbuf); | |
| 369 | strcpy(dblock.dbuf.name,buf); | |
| 370 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
| 371 | writetape( (char *) &dblock); | |
| 372 | } | |
| 373 | chdir(shortname); | |
| 374 | while (read(infile, (char *)&dbuf, sizeof(dbuf)) > 0 && !term) { | |
| 375 | if (dbuf.d_ino == 0) { | |
| 376 | i++; | |
| 377 | continue; | |
| 378 | } | |
| 379 | if (strcmp(".", dbuf.d_name) == 0 || strcmp("..", dbuf.d_name) == 0) { | |
| 380 | i++; | |
| 381 | continue; | |
| 382 | } | |
| 383 | cp2 = cp; | |
| 384 | for (j=0; j < DIRSIZ; j++) | |
| 385 | *cp2++ = dbuf.d_name[j]; | |
| 386 | *cp2 = '\0'; | |
| 387 | close(infile); | |
| 388 | putfile(buf, cp); | |
| 389 | infile = open(".", 0); | |
| 390 | i++; | |
| 391 | lseek(infile, (long) (sizeof(dbuf) * i), 0); | |
| 392 | } | |
| 393 | close(infile); | |
| 394 | chdir(".."); | |
| 395 | return; | |
| 396 | } | |
| 397 | if ((stbuf.st_mode & S_IFMT) != S_IFREG) { | |
| 398 | fprintf(stderr, "tar: %s is not a file. Not dumped\n", longname); | |
| 399 | return; | |
| 400 | } | |
| 401 | ||
| 402 | tomodes(&stbuf); | |
| 403 | ||
| 404 | cp2 = longname; | |
| 405 | for (cp = dblock.dbuf.name, i=0; (*cp++ = *cp2++) && i < NAMSIZ; i++); | |
| 406 | if (i >= NAMSIZ) { | |
| 407 | fprintf(stderr, "%s: file name too long\n", longname); | |
| 408 | close(infile); | |
| 409 | return; | |
| 410 | } | |
| 411 | ||
| 412 | if (stbuf.st_nlink > 1) { | |
| 413 | struct linkbuf *lp; | |
| 414 | int found = 0; | |
| 415 | ||
| 416 | for (lp = ihead; lp != NULL; lp = lp->nextp) { | |
| 417 | if (lp->inum == stbuf.st_ino && lp->devnum == stbuf.st_dev) { | |
| 418 | found++; | |
| 419 | break; | |
| 420 | } | |
| 421 | } | |
| 422 | if (found) { | |
| 423 | strcpy(dblock.dbuf.linkname, lp->pathname); | |
| 424 | dblock.dbuf.linkflag = '1'; | |
| 425 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
| 426 | writetape( (char *) &dblock); | |
| 427 | if (vflag) { | |
| 428 | fprintf(stderr, "a %s ", longname); | |
| 429 | fprintf(stderr, "link to %s\n", lp->pathname); | |
| 430 | } | |
| 431 | lp->count--; | |
| 432 | close(infile); | |
| 433 | return; | |
| 434 | } | |
| 435 | else { | |
| 436 | lp = (struct linkbuf *) malloc(sizeof(*lp)); | |
| 437 | if (lp == NULL) { | |
| 438 | if (freemem) { | |
| 439 | fprintf(stderr, "Out of memory. Link information lost\n"); | |
| 440 | freemem = 0; | |
| 441 | } | |
| 442 | } | |
| 443 | else { | |
| 444 | lp->nextp = ihead; | |
| 445 | ihead = lp; | |
| 446 | lp->inum = stbuf.st_ino; | |
| 447 | lp->devnum = stbuf.st_dev; | |
| 448 | lp->count = stbuf.st_nlink - 1; | |
| 449 | strcpy(lp->pathname, longname); | |
| 450 | } | |
| 451 | } | |
| 452 | } | |
| 453 | ||
| 454 | blocks = (stbuf.st_size + (TBLOCK-1)) / TBLOCK; | |
| 455 | if (vflag) { | |
| 456 | fprintf(stderr, "a %s ", longname); | |
| 457 | fprintf(stderr, "%ld blocks\n", blocks); | |
| 458 | } | |
| 459 | sprintf(dblock.dbuf.chksum, "%6o", checksum()); | |
| 460 | writetape( (char *) &dblock); | |
| 461 | ||
| 462 | while ((i = read(infile, buf, TBLOCK)) > 0 && blocks > 0) { | |
| 463 | writetape(buf); | |
| 464 | blocks--; | |
| 465 | } | |
| 466 | close(infile); | |
| 467 | if (blocks != 0 || i != 0) | |
| 468 | fprintf(stderr, "%s: file changed size\n", longname); | |
| 469 | while (blocks-- > 0) | |
| 470 | putempty(); | |
| 471 | } | |
| 472 | ||
| 473 | ||
| 474 | ||
| 475 | doxtract(argv) | |
| 476 | char *argv[]; | |
| 477 | { | |
| 478 | long blocks, bytes; | |
| 479 | char buf[TBLOCK]; | |
| 480 | char **cp; | |
| 481 | int ofile; | |
| 482 | ||
| 483 | for (;;) { | |
| 484 | getdir(); | |
| 485 | if (endtape()) | |
| 486 | break; | |
| 487 | ||
| 488 | if (*argv == 0) | |
| 489 | goto gotit; | |
| 490 | ||
| 491 | for (cp = argv; *cp; cp++) | |
| 492 | if (prefix(*cp, dblock.dbuf.name)) | |
| 493 | goto gotit; | |
| 494 | passtape(); | |
| 495 | continue; | |
| 496 | ||
| 497 | gotit: | |
| 498 | if (checkw('x', dblock.dbuf.name) == 0) { | |
| 499 | passtape(); | |
| 500 | continue; | |
| 501 | } | |
| 502 | ||
| 503 | if(checkdir(dblock.dbuf.name)) | |
| 504 | continue; | |
| 505 | ||
| 506 | if (dblock.dbuf.linkflag == '1') { | |
| 507 | unlink(dblock.dbuf.name); | |
| 508 | if (link(dblock.dbuf.linkname, dblock.dbuf.name) < 0) { | |
| 509 | fprintf(stderr, "%s: cannot link\n", dblock.dbuf.name); | |
| 510 | continue; | |
| 511 | } | |
| 512 | if (vflag) | |
| 513 | fprintf(stderr, "%s linked to %s\n", dblock.dbuf.name, dblock.dbuf.linkname); | |
| 514 | continue; | |
| 515 | } | |
| 516 | if ((ofile = creat(dblock.dbuf.name, stbuf.st_mode & 07777)) < 0) { | |
| 517 | fprintf(stderr, "tar: %s - cannot create\n", dblock.dbuf.name); | |
| 518 | passtape(); | |
| 519 | continue; | |
| 520 | } | |
| 521 | ||
| 522 | blocks = ((bytes = stbuf.st_size) + TBLOCK-1)/TBLOCK; | |
| 523 | if (vflag) | |
| 524 | fprintf(stderr, "x %s, %ld bytes, %ld tape blocks\n", dblock.dbuf.name, bytes, blocks); | |
| 525 | while (blocks-- > 0) { | |
| 526 | readtape(buf); | |
| 527 | if (bytes > TBLOCK) { | |
| 528 | if (write(ofile, buf, TBLOCK) < 0) { | |
| 529 | fprintf(stderr, "tar: %s: HELP - extract write error\n", dblock.dbuf.name); | |
| 530 | done(2); | |
| 531 | } | |
| 532 | } else | |
| 533 | if (write(ofile, buf, (int) bytes) < 0) { | |
| 534 | fprintf(stderr, "tar: %s: HELP - extract write error\n", dblock.dbuf.name); | |
| 535 | done(2); | |
| 536 | } | |
| 537 | bytes -= TBLOCK; | |
| 538 | } | |
| 539 | close(ofile); | |
| 540 | if (mflag == 0) { | |
| 541 | time_t timep[2]; | |
| 542 | ||
| 543 | timep[0] = time(NULL); | |
| 544 | timep[1] = stbuf.st_mtime; | |
| 545 | utime(dblock.dbuf.name, timep); | |
| 546 | } | |
| 547 | if(pflag) { | |
| 548 | chown(dblock.dbuf.name, stbuf.st_uid, stbuf.st_gid); | |
| 549 | chmod(dblock.dbuf.name, stbuf.st_mode & 07777); | |
| 550 | } | |
| 551 | } | |
| 552 | } | |
| 553 | ||
| 554 | dotable() | |
| 555 | { | |
| 556 | for (;;) { | |
| 557 | getdir(); | |
| 558 | if (endtape()) | |
| 559 | break; | |
| 560 | if (vflag) | |
| 561 | longt(&stbuf); | |
| 562 | printf("%s", dblock.dbuf.name); | |
| 563 | if (dblock.dbuf.linkflag == '1') | |
| 564 | printf(" linked to %s", dblock.dbuf.linkname); | |
| 565 | printf("\n"); | |
| 566 | passtape(); | |
| 567 | } | |
| 568 | } | |
| 569 | ||
| 570 | putempty() | |
| 571 | { | |
| 572 | char buf[TBLOCK]; | |
| 573 | char *cp; | |
| 574 | ||
| 575 | for (cp = buf; cp < &buf[TBLOCK]; ) | |
| 576 | *cp++ = '\0'; | |
| 577 | writetape(buf); | |
| 578 | } | |
| 579 | ||
| 580 | longt(st) | |
| 581 | register struct stat *st; | |
| 582 | { | |
| 583 | register char *cp; | |
| 584 | char *ctime(); | |
| 585 | ||
| 586 | pmode(st); | |
| 587 | printf("%3d/%1d", st->st_uid, st->st_gid); | |
| 588 | printf("%7D", st->st_size); | |
| 589 | cp = ctime(&st->st_mtime); | |
| 590 | printf(" %-12.12s %-4.4s ", cp+4, cp+20); | |
| 591 | } | |
| 592 | ||
| 593 | #define SUID 04000 | |
| 594 | #define SGID 02000 | |
| 595 | #define ROWN 0400 | |
| 596 | #define WOWN 0200 | |
| 597 | #define XOWN 0100 | |
| 598 | #define RGRP 040 | |
| 599 | #define WGRP 020 | |
| 600 | #define XGRP 010 | |
| 601 | #define ROTH 04 | |
| 602 | #define WOTH 02 | |
| 603 | #define XOTH 01 | |
| 604 | #define STXT 01000 | |
| 605 | int m1[] = { 1, ROWN, 'r', '-' }; | |
| 606 | int m2[] = { 1, WOWN, 'w', '-' }; | |
| 607 | int m3[] = { 2, SUID, 's', XOWN, 'x', '-' }; | |
| 608 | int m4[] = { 1, RGRP, 'r', '-' }; | |
| 609 | int m5[] = { 1, WGRP, 'w', '-' }; | |
| 610 | int m6[] = { 2, SGID, 's', XGRP, 'x', '-' }; | |
| 611 | int m7[] = { 1, ROTH, 'r', '-' }; | |
| 612 | int m8[] = { 1, WOTH, 'w', '-' }; | |
| 613 | int m9[] = { 2, STXT, 't', XOTH, 'x', '-' }; | |
| 614 | ||
| 615 | int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9}; | |
| 616 | ||
| 617 | pmode(st) | |
| 618 | register struct stat *st; | |
| 619 | { | |
| 620 | register int **mp; | |
| 621 | ||
| 622 | for (mp = &m[0]; mp < &m[9];) | |
| 623 | select(*mp++, st); | |
| 624 | } | |
| 625 | ||
| 626 | select(pairp, st) | |
| 627 | int *pairp; | |
| 628 | struct stat *st; | |
| 629 | { | |
| 630 | register int n, *ap; | |
| 631 | ||
| 632 | ap = pairp; | |
| 633 | n = *ap++; | |
| 634 | while (--n>=0 && (st->st_mode&*ap++)==0) | |
| 635 | ap++; | |
| 636 | printf("%c", *ap); | |
| 637 | } | |
| 638 | ||
| 639 | checkdir(name) | |
| 640 | register char *name; | |
| 641 | { | |
| 642 | register char *cp; | |
| 643 | int i; | |
| 644 | for (cp = name; *cp; cp++) { | |
| 645 | if (*cp == '/') { | |
| 646 | *cp = '\0'; | |
| 647 | if (access(name, 01) < 0) { | |
| 648 | register int pid, rp; | |
| 649 | ||
| 650 | if ((pid = fork()) == 0) { | |
| 651 | execl("/bin/mkdir", "mkdir", name, 0); | |
| 652 | execl("/usr/bin/mkdir", "mkdir", name, 0); | |
| 653 | fprintf(stderr, "tar: cannot find mkdir!\n"); | |
| 654 | done(0); | |
| 655 | } | |
| 656 | while ((rp = wait(&i)) >= 0 && rp != pid) | |
| 657 | ; | |
| 658 | if(pflag) { | |
| 659 | chown(name, stbuf.st_uid, stbuf.st_gid); | |
| 660 | chmod(dblock.dbuf.name, stbuf.st_mode & 0777); | |
| 661 | } | |
| 662 | } | |
| 663 | *cp = '/'; | |
| 664 | } | |
| 665 | } | |
| 666 | return(cp[-1]=='/'); | |
| 667 | } | |
| 668 | ||
| 669 | onintr() | |
| 670 | { | |
| 671 | signal(SIGINT, SIG_IGN); | |
| 672 | term++; | |
| 673 | } | |
| 674 | ||
| 675 | onquit() | |
| 676 | { | |
| 677 | signal(SIGQUIT, SIG_IGN); | |
| 678 | term++; | |
| 679 | } | |
| 680 | ||
| 681 | onhup() | |
| 682 | { | |
| 683 | signal(SIGHUP, SIG_IGN); | |
| 684 | term++; | |
| 685 | } | |
| 686 | ||
| 687 | onterm() | |
| 688 | { | |
| 689 | signal(SIGTERM, SIG_IGN); | |
| 690 | term++; | |
| 691 | } | |
| 692 | ||
| 693 | tomodes(sp) | |
| 694 | register struct stat *sp; | |
| 695 | { | |
| 696 | register char *cp; | |
| 697 | ||
| 698 | for (cp = dblock.dummy; cp < &dblock.dummy[TBLOCK]; cp++) | |
| 699 | *cp = '\0'; | |
| 700 | sprintf(dblock.dbuf.mode, "%6o ", sp->st_mode & 07777); | |
| 701 | sprintf(dblock.dbuf.uid, "%6o ", sp->st_uid); | |
| 702 | sprintf(dblock.dbuf.gid, "%6o ", sp->st_gid); | |
| 703 | sprintf(dblock.dbuf.size, "%11lo ", sp->st_size); | |
| 704 | sprintf(dblock.dbuf.mtime, "%11lo ", sp->st_mtime); | |
| 705 | } | |
| 706 | ||
| 707 | checksum() | |
| 708 | { | |
| 709 | register i; | |
| 710 | register char *cp; | |
| 711 | ||
| 712 | for (cp = dblock.dbuf.chksum; cp < &dblock.dbuf.chksum[sizeof(dblock.dbuf.chksum)]; cp++) | |
| 713 | *cp = ' '; | |
| 714 | i = 0; | |
| 715 | for (cp = dblock.dummy; cp < &dblock.dummy[TBLOCK]; cp++) | |
| 716 | i += *cp; | |
| 717 | return(i); | |
| 718 | } | |
| 719 | ||
| 720 | checkw(c, name) | |
| 721 | char *name; | |
| 722 | { | |
| 723 | if (wflag) { | |
| 724 | printf("%c ", c); | |
| 725 | if (vflag) | |
| 726 | longt(&stbuf); | |
| 727 | printf("%s: ", name); | |
| 728 | if (response() == 'y'){ | |
| 729 | return(1); | |
| 730 | } | |
| 731 | return(0); | |
| 732 | } | |
| 733 | return(1); | |
| 734 | } | |
| 735 | ||
| 736 | response() | |
| 737 | { | |
| 738 | char c; | |
| 739 | ||
| 740 | c = getchar(); | |
| 741 | if (c != '\n') | |
| 742 | while (getchar() != '\n'); | |
| 743 | else c = 'n'; | |
| 744 | return(c); | |
| 745 | } | |
| 746 | ||
| 747 | checkupdate(arg) | |
| 748 | char *arg; | |
| 749 | { | |
| 750 | char name[100]; | |
| 751 | long mtime; | |
| 752 | daddr_t seekp; | |
| 753 | daddr_t lookup(); | |
| 754 | ||
| 755 | rewind(tfile); | |
| 756 | for (;;) { | |
| 757 | if ((seekp = lookup(arg)) < 0) | |
| 758 | return(1); | |
| 759 | fseek(tfile, seekp, 0); | |
| 760 | fscanf(tfile, "%s %lo", name, &mtime); | |
| 761 | if (stbuf.st_mtime > mtime) | |
| 762 | return(1); | |
| 763 | else | |
| 764 | return(0); | |
| 765 | } | |
| 766 | } | |
| 767 | ||
| 768 | done(n) | |
| 769 | { | |
| 770 | unlink(tname); | |
| 771 | exit(n); | |
| 772 | } | |
| 773 | ||
| 774 | prefix(s1, s2) | |
| 775 | register char *s1, *s2; | |
| 776 | { | |
| 777 | while (*s1) | |
| 778 | if (*s1++ != *s2++) | |
| 779 | return(0); | |
| 780 | if (*s2) | |
| 781 | return(*s2 == '/'); | |
| 782 | return(1); | |
| 783 | } | |
| 784 | ||
| 785 | getwdir(s) | |
| 786 | char *s; | |
| 787 | { | |
| 788 | int i; | |
| 789 | int pipdes[2]; | |
| 790 | ||
| 791 | pipe(pipdes); | |
| 792 | if ((i = fork()) == 0) { | |
| 793 | close(1); | |
| 794 | dup(pipdes[1]); | |
| 795 | execl("/bin/pwd", "pwd", 0); | |
| 796 | execl("/usr/bin/pwd", "pwd", 0); | |
| 797 | fprintf(stderr, "pwd failed!\n"); | |
| 798 | printf("/\n"); | |
| 799 | exit(1); | |
| 800 | } | |
| 801 | while (wait((int *)NULL) != -1) | |
| 802 | ; | |
| 803 | read(pipdes[0], s, 50); | |
| 804 | while(*s != '\n') | |
| 805 | s++; | |
| 806 | *s = '\0'; | |
| 807 | close(pipdes[0]); | |
| 808 | close(pipdes[1]); | |
| 809 | } | |
| 810 | ||
| 811 | #define N 200 | |
| 812 | int njab; | |
| 813 | daddr_t | |
| 814 | lookup(s) | |
| 815 | char *s; | |
| 816 | { | |
| 817 | register i; | |
| 818 | daddr_t a; | |
| 819 | ||
| 820 | for(i=0; s[i]; i++) | |
| 821 | if(s[i] == ' ') | |
| 822 | break; | |
| 823 | a = bsrch(s, i, low, high); | |
| 824 | return(a); | |
| 825 | } | |
| 826 | ||
| 827 | daddr_t | |
| 828 | bsrch(s, n, l, h) | |
| 829 | daddr_t l, h; | |
| 830 | char *s; | |
| 831 | { | |
| 832 | register i, j; | |
| 833 | char b[N]; | |
| 834 | daddr_t m, m1; | |
| 835 | ||
| 836 | njab = 0; | |
| 837 | ||
| 838 | loop: | |
| 839 | if(l >= h) | |
| 840 | return(-1L); | |
| 841 | m = l + (h-l)/2 - N/2; | |
| 842 | if(m < l) | |
| 843 | m = l; | |
| 844 | fseek(tfile, m, 0); | |
| 845 | fread(b, 1, N, tfile); | |
| 846 | njab++; | |
| 847 | for(i=0; i<N; i++) { | |
| 848 | if(b[i] == '\n') | |
| 849 | break; | |
| 850 | m++; | |
| 851 | } | |
| 852 | if(m >= h) | |
| 853 | return(-1L); | |
| 854 | m1 = m; | |
| 855 | j = i; | |
| 856 | for(i++; i<N; i++) { | |
| 857 | m1++; | |
| 858 | if(b[i] == '\n') | |
| 859 | break; | |
| 860 | } | |
| 861 | i = cmp(b+j, s, n); | |
| 862 | if(i < 0) { | |
| 863 | h = m; | |
| 864 | goto loop; | |
| 865 | } | |
| 866 | if(i > 0) { | |
| 867 | l = m1; | |
| 868 | goto loop; | |
| 869 | } | |
| 870 | return(m); | |
| 871 | } | |
| 872 | ||
| 873 | cmp(b, s, n) | |
| 874 | char *b, *s; | |
| 875 | { | |
| 876 | register i; | |
| 877 | ||
| 878 | if(b[0] != '\n') | |
| 879 | exit(2); | |
| 880 | for(i=0; i<n; i++) { | |
| 881 | if(b[i+1] > s[i]) | |
| 882 | return(-1); | |
| 883 | if(b[i+1] < s[i]) | |
| 884 | return(1); | |
| 885 | } | |
| 886 | return(b[i+1] == ' '? 0 : -1); | |
| 887 | } | |
| 888 | ||
| 889 | readtape(buffer) | |
| 890 | char *buffer; | |
| 891 | { | |
| 892 | int i, j; | |
| 893 | ||
| 894 | if (recno >= nblock || first == 0) { | |
| 895 | if (first == 0 && nblock == 0) | |
| 896 | j = fflag ? NBLOCK : 1; /* orignally, NBLOCK; */ | |
| 897 | else | |
| 898 | j = nblock; | |
| 899 | if ((i = read(mt, tbuf, TBLOCK*j)) < 0) { | |
| 900 | fprintf(stderr, "Tar: tape read error\n"); | |
| 901 | done(3); | |
| 902 | } | |
| 903 | if (first == 0) { | |
| 904 | if ((i % TBLOCK) != 0) { | |
| 905 | fprintf(stderr, "Tar: tape blocksize error\n"); | |
| 906 | done(3); | |
| 907 | } | |
| 908 | i /= TBLOCK; | |
| 909 | if (rflag && i != 1) { | |
| 910 | fprintf(stderr, "Tar: Cannot update blocked tapes (yet)\n"); | |
| 911 | done(4); | |
| 912 | } | |
| 913 | if (i != nblock && (i != 1 || nblock == 0)) { | |
| 914 | fprintf(stderr, "Tar: blocksize = %d\n", i); | |
| 915 | nblock = i; | |
| 916 | } | |
| 917 | } | |
| 918 | recno = 0; | |
| 919 | } | |
| 920 | first = 1; | |
| 921 | copy(buffer, &tbuf[recno++]); | |
| 922 | return(TBLOCK); | |
| 923 | } | |
| 924 | ||
| 925 | writetape(buffer) | |
| 926 | char *buffer; | |
| 927 | { | |
| 928 | first = 1; | |
| 929 | if (nblock == 0) | |
| 930 | nblock = 1; | |
| 931 | if (recno >= nblock) { | |
| 932 | if (write(mt, tbuf, TBLOCK*nblock) < 0) { | |
| 933 | fprintf(stderr, "Tar: tape write error\n"); | |
| 934 | done(2); | |
| 935 | } | |
| 936 | recno = 0; | |
| 937 | } | |
| 938 | copy(&tbuf[recno++], buffer); | |
| 939 | if (recno >= nblock) { | |
| 940 | if (write(mt, tbuf, TBLOCK*nblock) < 0) { | |
| 941 | fprintf(stderr, "Tar: tape write error\n"); | |
| 942 | done(2); | |
| 943 | } | |
| 944 | recno = 0; | |
| 945 | } | |
| 946 | return(TBLOCK); | |
| 947 | } | |
| 948 | ||
| 949 | backtape() | |
| 950 | { | |
| 951 | lseek(mt, (long) -TBLOCK, 1); | |
| 952 | if (recno >= nblock) { | |
| 953 | recno = nblock - 1; | |
| 954 | if (read(mt, tbuf, TBLOCK*nblock) < 0) { | |
| 955 | fprintf(stderr, "Tar: tape read error after seek\n"); | |
| 956 | done(4); | |
| 957 | } | |
| 958 | lseek(mt, (long) -TBLOCK, 1); | |
| 959 | } | |
| 960 | } | |
| 961 | ||
| 962 | flushtape() | |
| 963 | { | |
| 964 | write(mt, tbuf, TBLOCK*nblock); | |
| 965 | } | |
| 966 | ||
| 967 | copy(to, from) | |
| 968 | register char *to, *from; | |
| 969 | { | |
| 970 | register i; | |
| 971 | ||
| 972 | i = TBLOCK; | |
| 973 | do { | |
| 974 | *to++ = *from++; | |
| 975 | } while (--i); | |
| 976 | } |