| 1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)arff.c 4.16 (Berkeley) 83/07/10"; |
| 3 | #endif |
| 4 | |
| 5 | #include <sys/types.h> |
| 6 | #include <sys/stat.h> |
| 7 | #include <sys/time.h> |
| 8 | #include <signal.h> |
| 9 | #include <stdio.h> |
| 10 | #include <sys/file.h> |
| 11 | |
| 12 | #define dbprintf printf |
| 13 | |
| 14 | struct rt_dat { |
| 15 | u_short rt_yr:5; /* year-1972 */ |
| 16 | u_short rt_dy:5; /* day */ |
| 17 | u_short rt_mo:5; /* month */ |
| 18 | }; |
| 19 | |
| 20 | struct rt_axent { |
| 21 | char rt_sent[14]; |
| 22 | }; |
| 23 | |
| 24 | struct rt_ent { |
| 25 | char rt_pad; /* unusued */ |
| 26 | char rt_stat; /* type of entry, or end of seg */ |
| 27 | u_short rt_name[3]; /* name, 3 words in rad50 form */ |
| 28 | u_short rt_len; /* length of file */ |
| 29 | char rt_chan; /* only used in temporary files */ |
| 30 | char rt_job; /* only used in temporary files */ |
| 31 | struct rt_dat rt_date; /* creation date */ |
| 32 | }; |
| 33 | |
| 34 | #define RT_TEMP 1 |
| 35 | #define RT_NULL 2 |
| 36 | #define RT_FILE 4 |
| 37 | #define RT_ESEG 8 |
| 38 | |
| 39 | #define RT_BLOCK 512 /* block size */ |
| 40 | #define RT_DIRSIZE 31 /* max # of directory segments */ |
| 41 | |
| 42 | struct rt_head { |
| 43 | short rt_numseg; /* # of segments available */ |
| 44 | short rt_nxtseg; /* # of next logical segment */ |
| 45 | short rt_lstseg; /* highest seg currently open */ |
| 46 | u_short rt_entpad; /* extra words/directory entry */ |
| 47 | short rt_stfile; /* block # where files begin */ |
| 48 | }; |
| 49 | |
| 50 | struct rt_dir { |
| 51 | struct rt_head rt_axhead; |
| 52 | struct rt_ent rt_ents[72]; |
| 53 | char _dirpad[6]; |
| 54 | }; |
| 55 | |
| 56 | typedef struct fldope { |
| 57 | int startad; |
| 58 | int count; |
| 59 | struct rt_ent *rtdope; |
| 60 | } FLDOPE; |
| 61 | |
| 62 | FLDOPE *lookup(); |
| 63 | |
| 64 | #define rt(p) ((struct rt_ent *) p ) |
| 65 | #define Ain1 03100 |
| 66 | #define Ain2 050 |
| 67 | #define flag(c) (flg[('c') - 'a']) |
| 68 | |
| 69 | char *man = "rxtd"; |
| 70 | char zeroes[512]; |
| 71 | |
| 72 | extern char *val; |
| 73 | extern char table[256]; |
| 74 | struct rt_dir rt_dir[RT_DIRSIZE] = { |
| 75 | { 4, 0, 1, 0, 14 }, |
| 76 | { { 0, RT_NULL, { 0, 0, 0 }, 494, 0 }, |
| 77 | { 0, RT_ESEG } } |
| 78 | }; |
| 79 | |
| 80 | int rt_entsiz; |
| 81 | int rt_nleft; |
| 82 | struct rt_ent *rt_curend[RT_DIRSIZE]; |
| 83 | int floppydes; |
| 84 | int dirdirty; |
| 85 | char *rt_last; |
| 86 | char *defdev = "/dev/floppy"; |
| 87 | |
| 88 | char *opt = "vf"; |
| 89 | |
| 90 | int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0}; |
| 91 | extern long lseek(); |
| 92 | int rcmd(), dcmd(), xcmd(), tcmd(); |
| 93 | |
| 94 | int (*comfun)(); |
| 95 | char flg[26]; |
| 96 | char **namv; |
| 97 | int namc; |
| 98 | int file; |
| 99 | |
| 100 | main(argc, argv) |
| 101 | char *argv[]; |
| 102 | { |
| 103 | register char *cp; |
| 104 | |
| 105 | if (argc < 2) |
| 106 | usage(); |
| 107 | for (cp = argv[1]; *cp; cp++) |
| 108 | switch (*cp) { |
| 109 | |
| 110 | case 'm': |
| 111 | case 'v': |
| 112 | case 'u': |
| 113 | case 'w': |
| 114 | flg[*cp-'a']++; |
| 115 | continue; |
| 116 | case 'c': |
| 117 | flag(c)++; |
| 118 | dirdirty++; |
| 119 | continue; |
| 120 | |
| 121 | case 'r': |
| 122 | setcom(rcmd); |
| 123 | flag(r)++; |
| 124 | continue; |
| 125 | |
| 126 | case 'd': |
| 127 | setcom(dcmd); |
| 128 | flag(d)++; |
| 129 | continue; |
| 130 | |
| 131 | case 'x': |
| 132 | setcom(xcmd); |
| 133 | continue; |
| 134 | |
| 135 | case 't': |
| 136 | setcom(tcmd); |
| 137 | continue; |
| 138 | |
| 139 | case 'f': |
| 140 | defdev = argv[2]; |
| 141 | argv++; |
| 142 | argc--; |
| 143 | continue; |
| 144 | |
| 145 | default: |
| 146 | fprintf(stderr, "arff: bad option `%c'\n", *cp); |
| 147 | exit(1); |
| 148 | } |
| 149 | |
| 150 | namv = argv+2; |
| 151 | namc = argc-2; |
| 152 | if (comfun == 0) { |
| 153 | if (flag(u) == 0) { |
| 154 | fprintf(stderr, "arff: one of [%s] must be specified\n", |
| 155 | man); |
| 156 | exit(1); |
| 157 | } |
| 158 | setcom(rcmd); |
| 159 | } |
| 160 | (*comfun)(); |
| 161 | exit(notfound()); |
| 162 | } |
| 163 | |
| 164 | setcom(fun) |
| 165 | int (*fun)(); |
| 166 | { |
| 167 | if (comfun != 0) { |
| 168 | fprintf(stderr, "arff: only one of [%s] allowed\n", man); |
| 169 | exit(1); |
| 170 | } |
| 171 | comfun = fun; |
| 172 | } |
| 173 | |
| 174 | usage() |
| 175 | { |
| 176 | fprintf(stderr, "usage: ar [%s][%s] archive files ...\n", opt, man); |
| 177 | exit(1); |
| 178 | } |
| 179 | |
| 180 | notfound() |
| 181 | { |
| 182 | register i, n = 0; |
| 183 | |
| 184 | for (i = 0; i < namc; i++) |
| 185 | if (namv[i]) { |
| 186 | fprintf(stderr, "arff: %s not found\n", namv[i]); |
| 187 | n++; |
| 188 | } |
| 189 | return (n); |
| 190 | } |
| 191 | |
| 192 | mesg(c) |
| 193 | { |
| 194 | if (flag(v)) |
| 195 | if (c != 'c' || flag(v) > 1) |
| 196 | printf("%c - %s\n", c, file); |
| 197 | } |
| 198 | |
| 199 | tcmd() |
| 200 | { |
| 201 | register char *de, *last; |
| 202 | FLDOPE *lookup(), *dope; |
| 203 | int segnum, nleft; |
| 204 | register i; |
| 205 | register struct rt_ent *rde; |
| 206 | |
| 207 | rt_init(); |
| 208 | if (namc != 0) { |
| 209 | for (i = 0; i < namc; i++) |
| 210 | if (dope = lookup(namv[i])) { |
| 211 | rde = dope->rtdope; |
| 212 | rtls(rde); |
| 213 | namv[i] = 0; |
| 214 | } |
| 215 | return; |
| 216 | } |
| 217 | for (segnum = 0; segnum != -1; |
| 218 | segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) { |
| 219 | last = rt_last + segnum*2*RT_BLOCK; |
| 220 | for (de = ((char *)&rt_dir[segnum])+10; de <= last; |
| 221 | de += rt_entsiz) |
| 222 | if (rtls(rt(de))) { |
| 223 | nleft = (last-de)/rt_entsiz; |
| 224 | #define ENTRIES "\n%d entries remaining in directory segment %d.\n" |
| 225 | printf(ENTRIES, nleft, segnum+1); |
| 226 | break; |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | rtls(de) |
| 232 | register struct rt_ent *de; |
| 233 | { |
| 234 | int month, day, year; |
| 235 | char name[12], ext[4]; |
| 236 | |
| 237 | switch (de->rt_stat) { |
| 238 | |
| 239 | case RT_TEMP: |
| 240 | if (flag(v)) |
| 241 | printf("Tempfile:\n"); |
| 242 | /* fall thru...*/ |
| 243 | |
| 244 | case RT_FILE: |
| 245 | if (!flag(v)) { |
| 246 | sunrad50(name, de->rt_name); |
| 247 | printf("%s\n", name); |
| 248 | break; |
| 249 | } |
| 250 | unrad50(2, de->rt_name, name); |
| 251 | unrad50(1, &(de->rt_name[2]), ext); |
| 252 | day = de->rt_date.rt_dy; |
| 253 | year = de->rt_date.rt_yr+72; |
| 254 | month = de->rt_date.rt_mo; |
| 255 | printf("%6.6s %3.3s %02d/%02d/%02d %d\n",name, |
| 256 | ext, month, day, year, de->rt_len); |
| 257 | break; |
| 258 | |
| 259 | case RT_NULL: |
| 260 | printf("%-25.9s %d\n","<UNUSED>", de->rt_len); |
| 261 | break; |
| 262 | |
| 263 | case RT_ESEG: |
| 264 | return (1); |
| 265 | } |
| 266 | return (0); |
| 267 | } |
| 268 | |
| 269 | xcmd() |
| 270 | { |
| 271 | register char *de, *last; |
| 272 | int segnum; |
| 273 | char name[12]; |
| 274 | register int i; |
| 275 | |
| 276 | rt_init(); |
| 277 | if (namc != 0) { |
| 278 | for (i = 0; i < namc; i++) |
| 279 | if (rtx(namv[i]) == 0) |
| 280 | namv[i] = 0; |
| 281 | return; |
| 282 | } |
| 283 | for (segnum = 0; segnum != -1; |
| 284 | segnum = rt_dir[segnum].rt_axhead.rt_nxtseg-1) |
| 285 | for (last = rt_last+(segnum*2*RT_BLOCK), |
| 286 | de = ((char *)&rt_dir[segnum])+10; de <= last; |
| 287 | de += rt_entsiz) |
| 288 | switch (rt(de)->rt_stat) { |
| 289 | |
| 290 | case RT_ESEG: |
| 291 | return; |
| 292 | |
| 293 | case RT_TEMP: |
| 294 | case RT_FILE: |
| 295 | sunrad50(name,rt(de)->rt_name); |
| 296 | rtx(name); |
| 297 | |
| 298 | case RT_NULL: |
| 299 | break; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | rtx(name) |
| 304 | char *name; |
| 305 | { |
| 306 | register FLDOPE *dope; |
| 307 | FLDOPE *lookup(); |
| 308 | register startad, count; |
| 309 | int file; |
| 310 | char buff[512]; |
| 311 | |
| 312 | |
| 313 | if (dope = lookup(name)) { |
| 314 | if (flag(v)) |
| 315 | rtls(dope->rtdope); |
| 316 | else |
| 317 | printf("x - %s\n",name); |
| 318 | |
| 319 | if ((file = creat(name, 0666)) < 0) |
| 320 | return (1); |
| 321 | count = dope->count; |
| 322 | startad = dope->startad; |
| 323 | for( ; count > 0 ; count -= 512) { |
| 324 | lread(startad, 512, buff); |
| 325 | write(file, buff, 512); |
| 326 | startad += 512; |
| 327 | } |
| 328 | close(file); |
| 329 | return (0); |
| 330 | } |
| 331 | return (1); |
| 332 | } |
| 333 | |
| 334 | rt_init() |
| 335 | { |
| 336 | static initized = 0; |
| 337 | register char *de, *last; |
| 338 | register i; |
| 339 | int dirnum; |
| 340 | char *mode; |
| 341 | FILE *temp_floppydes; |
| 342 | |
| 343 | if (initized) |
| 344 | return; |
| 345 | initized = 1; |
| 346 | if (flag(c)) { |
| 347 | struct stat sb; |
| 348 | char response[128]; |
| 349 | int tty; |
| 350 | |
| 351 | if (stat(defdev, &sb) >= 0 && (sb.st_mode & S_IFMT) == S_IFREG) |
| 352 | goto ignore; |
| 353 | tty = open("/dev/tty", O_RDWR); |
| 354 | #define SURE "Are you sure you want to clobber the floppy? " |
| 355 | write(tty, SURE, sizeof (SURE)); |
| 356 | read(tty, response, sizeof (response)); |
| 357 | if (*response != 'y') |
| 358 | exit(50); |
| 359 | close(tty); |
| 360 | ignore: |
| 361 | ; |
| 362 | } |
| 363 | if (flag(c) || flag(d) || flag(r)) |
| 364 | mode = "r+"; |
| 365 | else |
| 366 | mode = "r"; |
| 367 | if ((temp_floppydes = fopen(defdev, mode)) == NULL) { |
| 368 | perror(defdev); |
| 369 | exit(1); |
| 370 | } else |
| 371 | floppydes = fileno(temp_floppydes); |
| 372 | if (!flag(c)) { |
| 373 | lread(6*RT_BLOCK, 2*RT_BLOCK, (char *)&rt_dir[0]); |
| 374 | dirnum = rt_dir[0].rt_axhead.rt_numseg; |
| 375 | /* check for blank/uninitialized diskette */ |
| 376 | if (dirnum <= 0) { |
| 377 | fprintf(stderr,"arff: bad directory format\n"); |
| 378 | exit(1); |
| 379 | } |
| 380 | if (dirnum > RT_DIRSIZE) { |
| 381 | fprintf(stderr,"arff: too many directory segments\n"); |
| 382 | exit(1); |
| 383 | } |
| 384 | for (i = 1; i < dirnum; i++) |
| 385 | lread((6+2*i)*RT_BLOCK, 2*RT_BLOCK, (char *)&rt_dir[i]); |
| 386 | } else |
| 387 | dirnum = 1; |
| 388 | |
| 389 | rt_entsiz = 2*rt_dir[0].rt_axhead.rt_entpad + 14; |
| 390 | rt_entsiz = 14; /* assume rt_entpad = 0 ??? */ |
| 391 | rt_last = ((char *) &rt_dir[0]) + 10 + 1014/rt_entsiz*rt_entsiz; |
| 392 | rt_nleft = 0; |
| 393 | |
| 394 | for (i = 0; i < dirnum; i++) { |
| 395 | last = rt_last + i*2*RT_BLOCK; |
| 396 | for (de = ((char *)&rt_dir[i])+10; de <= last; de += rt_entsiz) |
| 397 | if (rt(de)->rt_stat == RT_ESEG) |
| 398 | break; |
| 399 | rt_curend[i] = rt(de); |
| 400 | rt_nleft += (last-de)/rt_entsiz; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | static FLDOPE result; |
| 405 | |
| 406 | FLDOPE * |
| 407 | lookup(name) |
| 408 | char *name; |
| 409 | { |
| 410 | unsigned short rname[3]; |
| 411 | register char *de, *last; |
| 412 | int segnum; |
| 413 | register index; |
| 414 | |
| 415 | srad50(name,rname); |
| 416 | |
| 417 | /* |
| 418 | * Search for name, accumulate blocks in index |
| 419 | */ |
| 420 | rt_init(); |
| 421 | for (segnum = 0; segnum != -1; |
| 422 | segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) |
| 423 | { |
| 424 | index = 0; |
| 425 | last = rt_last + segnum*2*RT_BLOCK; |
| 426 | for (de=((char *)&rt_dir[segnum])+10; |
| 427 | rt(de)->rt_stat != RT_ESEG; de += rt_entsiz) |
| 428 | switch(rt(de)->rt_stat) { |
| 429 | |
| 430 | case RT_FILE: |
| 431 | case RT_TEMP: |
| 432 | if(samename(rname,rt(de)->rt_name)) { |
| 433 | result.count = rt(de)->rt_len * 512; |
| 434 | result.startad = 512* |
| 435 | (rt_dir[segnum].rt_axhead.rt_stfile + index); |
| 436 | result.rtdope = (struct rt_ent *) de; |
| 437 | return (&result); |
| 438 | } |
| 439 | |
| 440 | case RT_NULL: |
| 441 | index += rt(de)->rt_len; |
| 442 | } |
| 443 | } |
| 444 | return ((FLDOPE *) 0); |
| 445 | |
| 446 | } |
| 447 | |
| 448 | static |
| 449 | samename(a, b) |
| 450 | u_short a[], b[]; |
| 451 | { |
| 452 | return (*a == *b && a[1] == b[1] && a[2] == b[2] ); |
| 453 | } |
| 454 | |
| 455 | rad50(cp, out) |
| 456 | register u_char *cp; |
| 457 | u_short *out; |
| 458 | { |
| 459 | register index, temp; |
| 460 | |
| 461 | for (index = 0; *cp; index++) { |
| 462 | temp = Ain1 * table[*cp++]; |
| 463 | if (*cp!=0) { |
| 464 | temp += Ain2 * table[*cp++]; |
| 465 | if(*cp!=0) |
| 466 | temp += table[*cp++]; |
| 467 | } |
| 468 | out[index] = temp; |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | #define reduce(x, p, q) (x = v[p/q], p %= q); |
| 473 | |
| 474 | unrad50(count, in, cp) |
| 475 | u_short *in; |
| 476 | register char *cp; |
| 477 | { |
| 478 | register i, temp; |
| 479 | register u_char *v = (u_char *) val; |
| 480 | |
| 481 | for (i = 0; i < count; i++) { |
| 482 | temp = in[i]; |
| 483 | reduce(*cp++, temp, Ain1); |
| 484 | reduce(*cp++, temp, Ain2); |
| 485 | reduce(*cp++, temp, 1); |
| 486 | } |
| 487 | *cp=0; |
| 488 | } |
| 489 | |
| 490 | srad50(name, rname) |
| 491 | register char *name; |
| 492 | register u_short *rname; |
| 493 | { |
| 494 | register index; |
| 495 | register char *cp; |
| 496 | char file[7], ext[4]; |
| 497 | |
| 498 | /* |
| 499 | * Find end of pathname |
| 500 | */ |
| 501 | for (cp = name; *cp++; ) |
| 502 | ; |
| 503 | while (cp >= name && *--cp != '/') |
| 504 | ; |
| 505 | cp++; |
| 506 | /* |
| 507 | * Change to rad50 |
| 508 | */ |
| 509 | for (index = 0; *cp; ) { |
| 510 | file[index++] = *cp++; |
| 511 | if (*cp == '.') { |
| 512 | cp++; |
| 513 | break; |
| 514 | } |
| 515 | if (index >= 6) { |
| 516 | break; |
| 517 | } |
| 518 | } |
| 519 | file[index] = 0; |
| 520 | for (index = 0; *cp; ) { |
| 521 | ext[index++] = *cp++; |
| 522 | if (*cp == '.' || index >= 3) |
| 523 | break; |
| 524 | } |
| 525 | ext[index]=0; |
| 526 | rname[0] = rname[1] = rname[2] = 0; |
| 527 | rad50((u_char *)file, rname); |
| 528 | rad50((u_char *)ext, rname+2); |
| 529 | } |
| 530 | |
| 531 | sunrad50(name, rname) |
| 532 | u_short rname[]; |
| 533 | register char *name; |
| 534 | { |
| 535 | register char *cp, *cp2; |
| 536 | char ext[4]; |
| 537 | |
| 538 | unrad50(2, rname, name); |
| 539 | unrad50(1, rname + 2, ext); |
| 540 | /* |
| 541 | * Jam name and extension together with a dot |
| 542 | * deleting white space |
| 543 | */ |
| 544 | for (cp = name; *cp++;) |
| 545 | ; |
| 546 | --cp; |
| 547 | while (*--cp == ' ' && cp >= name) |
| 548 | ; |
| 549 | *++cp = '.'; |
| 550 | cp++; |
| 551 | for (cp2 = ext; *cp2 != ' ' && cp2 < ext+3;) |
| 552 | *cp++ = *cp2++; |
| 553 | *cp=0; |
| 554 | if (cp[-1] == '.') |
| 555 | cp[-1] = 0; |
| 556 | } |
| 557 | |
| 558 | static char *oval = " ABCDEFGHIJKLMNOPQRSTUVWXYZ$.@0123456789"; |
| 559 | static char *val = " abcdefghijklmnopqrstuvwxyz$.@0123456789"; |
| 560 | |
| 561 | static char table[256] = { |
| 562 | 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, |
| 563 | 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, |
| 564 | 0, 29, 29, 29, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 28, 29, |
| 565 | 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 29, 29, 29, 29, 29, 29, |
| 566 | 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 567 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29, |
| 568 | 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 569 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29, |
| 570 | 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, |
| 571 | 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, |
| 572 | 0, 29, 29, 29, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 28, 29, |
| 573 | 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 29, 29, 29, 29, 29, 29, |
| 574 | 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 575 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29, 29, |
| 576 | 29, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
| 577 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 29, 29, 29, 29 }; |
| 578 | |
| 579 | /* |
| 580 | * Logical to physical adress translation |
| 581 | */ |
| 582 | long |
| 583 | trans(logical) |
| 584 | register int logical; |
| 585 | { |
| 586 | register int sector, bytes, track; |
| 587 | |
| 588 | logical += 26*128; |
| 589 | bytes = (logical&127); |
| 590 | logical >>= 7; |
| 591 | sector = logical%26; |
| 592 | if(sector >= 13) |
| 593 | sector = sector*2+1; |
| 594 | else |
| 595 | sector *= 2; |
| 596 | sector += 26 + ((track = (logical/26))-1)*6; |
| 597 | sector %= 26; |
| 598 | return ((((track*26)+sector) << 7) + bytes); |
| 599 | } |
| 600 | |
| 601 | lread(startad, count, obuff) |
| 602 | register startad, count; |
| 603 | register char *obuff; |
| 604 | { |
| 605 | long trans(); |
| 606 | extern floppydes; |
| 607 | register int size = flag(m) ? 512 : 128; |
| 608 | |
| 609 | rt_init(); |
| 610 | while ((count -= size) >= 0) { |
| 611 | lseek(floppydes, flag(m) ? |
| 612 | (long)startad : trans(startad), 0); |
| 613 | if (read(floppydes, obuff, size) != size) |
| 614 | fprintf(stderr, "arff: read error block %d\n", |
| 615 | startad/size); |
| 616 | obuff += size; |
| 617 | startad += size; |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | lwrite(startad, count, obuff) |
| 622 | register startad, count; |
| 623 | register char *obuff; |
| 624 | { |
| 625 | long trans(); |
| 626 | extern floppydes; |
| 627 | register int size = flag(m) ? 512 : 128; |
| 628 | |
| 629 | rt_init(); |
| 630 | while ((count -= size) >= 0) { |
| 631 | lseek(floppydes, flag(m) ? |
| 632 | (long)startad : trans(startad), 0); |
| 633 | if (write(floppydes, obuff, size) != size) |
| 634 | fprintf(stderr, "arff: write error block %d\n", |
| 635 | startad/size); |
| 636 | obuff += size; |
| 637 | startad += size; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | rcmd() |
| 642 | { |
| 643 | register int i; |
| 644 | |
| 645 | rt_init(); |
| 646 | if (namc > 0) |
| 647 | for (i = 0; i < namc; i++) |
| 648 | if (rtr(namv[i]) == 0) |
| 649 | namv[i] = 0; |
| 650 | } |
| 651 | |
| 652 | rtr(name) |
| 653 | char *name; |
| 654 | { |
| 655 | register FLDOPE *dope; |
| 656 | register struct rt_ent *de; |
| 657 | struct stat buf; |
| 658 | register struct stat *bufp = &buf; |
| 659 | int segnum; |
| 660 | register char *last; |
| 661 | |
| 662 | if (stat(name, bufp) < 0) { |
| 663 | perror(name); |
| 664 | return (-1); |
| 665 | } |
| 666 | if (dope = lookup(name)) { |
| 667 | /* can replace, no problem */ |
| 668 | de = dope->rtdope; |
| 669 | if (bufp->st_size <= (de->rt_len * 512)) |
| 670 | printf("r - %s\n",name), |
| 671 | toflop(name, bufp->st_size, dope); |
| 672 | else { |
| 673 | fprintf(stderr, |
| 674 | "%s will not fit in currently used file on floppy\n", |
| 675 | name); |
| 676 | return (-1); |
| 677 | } |
| 678 | goto found; |
| 679 | } |
| 680 | /* |
| 681 | * Search for vacant spot |
| 682 | */ |
| 683 | for (segnum = 0; segnum != -1; |
| 684 | segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) |
| 685 | { |
| 686 | last = rt_last + segnum*2*RT_BLOCK; |
| 687 | for (de = rt_dir[segnum].rt_ents; |
| 688 | rt(de)->rt_stat != RT_ESEG; de++) |
| 689 | if ((de)->rt_stat == RT_NULL) { |
| 690 | if (bufp->st_size <= (de->rt_len*512)) { |
| 691 | printf("a - %s\n",name), |
| 692 | mkent(de, segnum, bufp,name); |
| 693 | goto found; |
| 694 | } |
| 695 | continue; |
| 696 | } |
| 697 | } |
| 698 | printf("%s: no slot for file\n", name); |
| 699 | return (-1); |
| 700 | |
| 701 | found: |
| 702 | if (dope = lookup(name)) { |
| 703 | toflop(name, bufp->st_size, dope); |
| 704 | return (0); |
| 705 | } |
| 706 | printf("%s: internal error, added then not found\n", name); |
| 707 | return (-1); |
| 708 | } |
| 709 | |
| 710 | mkent(de, segnum, bufp, name) |
| 711 | register struct rt_ent *de; |
| 712 | int segnum; |
| 713 | register struct stat *bufp; |
| 714 | char *name; |
| 715 | { |
| 716 | struct tm *localtime(); |
| 717 | register struct tm *timp; |
| 718 | register struct rt_ent *workp; |
| 719 | int count; |
| 720 | |
| 721 | count = (((bufp->st_size -1) >>9) + 1); |
| 722 | /* make sure there is room */ |
| 723 | if (de->rt_len == count) |
| 724 | goto overwrite; |
| 725 | if ((char *)rt_curend[segnum] == (rt_last + (segnum*2*RT_BLOCK))) { |
| 726 | /* no entries left on segment */ |
| 727 | if (flag(o)) |
| 728 | goto overwrite; |
| 729 | fprintf(stderr, "Directory segment #%d full on %s\n", |
| 730 | segnum+1, defdev); |
| 731 | exit(1); |
| 732 | } |
| 733 | /* copy directory entries up */ |
| 734 | for (workp = rt_curend[segnum]+1; workp > de; workp--) |
| 735 | *workp = workp[-1]; |
| 736 | de[1].rt_len -= count; |
| 737 | de->rt_len = count; |
| 738 | rt_curend[segnum]++; |
| 739 | rt_nleft--; |
| 740 | |
| 741 | overwrite: |
| 742 | srad50(name,de->rt_name); |
| 743 | timp = localtime(&bufp->st_mtime); |
| 744 | de->rt_date.rt_dy = timp->tm_mday; |
| 745 | de->rt_date.rt_mo = timp->tm_mon + 1; |
| 746 | de->rt_date.rt_yr = timp->tm_year - 72; |
| 747 | de->rt_stat = RT_FILE; |
| 748 | de->rt_pad = 0; |
| 749 | de->rt_chan = 0; |
| 750 | de->rt_job = 0; |
| 751 | lwrite((6+segnum*2)*RT_BLOCK, 2*RT_BLOCK, (char *)&rt_dir[segnum]); |
| 752 | } |
| 753 | |
| 754 | toflop(name, ocount, dope) |
| 755 | char *name; |
| 756 | register FLDOPE *dope; |
| 757 | long ocount; |
| 758 | { |
| 759 | register file, n, startad = dope->startad, count = ocount; |
| 760 | char buff[512]; |
| 761 | |
| 762 | file = open(name, 0); |
| 763 | if (file < 0) { |
| 764 | fprintf(stderr, "arff: couldn't open %s\n",name); |
| 765 | exit(1); |
| 766 | } |
| 767 | for( ; count >= 512; count -= 512) { |
| 768 | read(file, buff, 512); |
| 769 | lwrite(startad, 512, buff); |
| 770 | startad += 512; |
| 771 | } |
| 772 | read(file, buff, count); |
| 773 | close(file); |
| 774 | if (count <= 0) |
| 775 | return; |
| 776 | for (n = count; n < 512; n ++) |
| 777 | buff[n] = 0; |
| 778 | lwrite(startad, 512, buff); |
| 779 | count = (dope->rtdope->rt_len*512-ocount)/512 ; |
| 780 | if (count <= 0) |
| 781 | return; |
| 782 | for ( ; count > 0 ; count--) { |
| 783 | startad += 512; |
| 784 | lwrite(startad, 512, zeroes); |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | dcmd() |
| 789 | { |
| 790 | register int i; |
| 791 | |
| 792 | rt_init(); |
| 793 | if (namc) |
| 794 | for (i = 0; i < namc; i++) |
| 795 | if (rtk(namv[i])==0) |
| 796 | namv[i]=0; |
| 797 | if (dirdirty) |
| 798 | scrunch(); |
| 799 | } |
| 800 | |
| 801 | rtk(name) |
| 802 | char *name; |
| 803 | { |
| 804 | register FLDOPE *dope; |
| 805 | register struct rt_ent *de; |
| 806 | FLDOPE *lookup(); |
| 807 | |
| 808 | if (dope = lookup(name)) { |
| 809 | printf("d - %s\n",name); |
| 810 | de = dope->rtdope; |
| 811 | de->rt_stat = RT_NULL; |
| 812 | de->rt_name[0] = 0; |
| 813 | de->rt_name[1] = 0; |
| 814 | de->rt_name[2] = 0; |
| 815 | *((u_short *)&(de->rt_date)) = 0; |
| 816 | dirdirty = 1; |
| 817 | return (0); |
| 818 | } |
| 819 | return (1); |
| 820 | } |
| 821 | |
| 822 | scrunch() |
| 823 | { |
| 824 | register struct rt_ent *de , *workp; |
| 825 | register segnum; |
| 826 | |
| 827 | for (segnum = 0; segnum != -1; |
| 828 | segnum = rt_dir[segnum].rt_axhead.rt_nxtseg - 1) { |
| 829 | for (de = rt_dir[segnum].rt_ents; de <= rt_curend[segnum]; de++) |
| 830 | if (de->rt_stat == RT_NULL && |
| 831 | (de+1)->rt_stat == RT_NULL) { |
| 832 | (de+1)->rt_len += de->rt_len; |
| 833 | for (workp=de; workp<rt_curend[segnum]; workp++) |
| 834 | *workp = workp[1]; |
| 835 | de--; |
| 836 | rt_curend[segnum]--; |
| 837 | rt_nleft++; |
| 838 | } |
| 839 | lwrite((6+segnum*2)*RT_BLOCK, 2*RT_BLOCK, |
| 840 | (char *)&rt_dir[segnum]); |
| 841 | } |
| 842 | dirdirty = 0; |
| 843 | } |