1 /*- 2 * Copyright (c) 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley 6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 7 * Support code is derived from software contributed to Berkeley 8 * by Atsushi Murai (amurai@spec.co.jp). 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94 39 * $FreeBSD: src/sys/isofs/cd9660/cd9660_rrip.c,v 1.17 1999/08/28 00:46:06 peter Exp $ 40 * $DragonFly: src/sys/vfs/isofs/cd9660/cd9660_rrip.c,v 1.7 2004/04/12 23:18:55 cpressey Exp $ 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/buf.h> 46 #include <sys/vnode.h> 47 #include <sys/mount.h> 48 #include <sys/kernel.h> 49 50 #include "iso.h" 51 #include "cd9660_node.h" 52 #include "cd9660_rrip.h" 53 #include "iso_rrip.h" 54 55 typedef int rrt_func_t (void *, ISO_RRIP_ANALYZE *ana); 56 57 typedef struct { 58 char type[2]; 59 rrt_func_t *func; 60 void (*func2) (struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana); 61 int result; 62 } RRIP_TABLE; 63 64 static int cd9660_rrip_altname (ISO_RRIP_ALTNAME *p, 65 ISO_RRIP_ANALYZE *ana); 66 static int cd9660_rrip_attr (ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana); 67 static int cd9660_rrip_cont (ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana); 68 static void cd9660_rrip_defattr (struct iso_directory_record *isodir, 69 ISO_RRIP_ANALYZE *ana); 70 static void cd9660_rrip_defname (struct iso_directory_record *isodir, 71 ISO_RRIP_ANALYZE *ana); 72 static void cd9660_rrip_deftstamp (struct iso_directory_record *isodir, 73 ISO_RRIP_ANALYZE *ana); 74 static int cd9660_rrip_device (ISO_RRIP_DEVICE *p, 75 ISO_RRIP_ANALYZE *ana); 76 static int cd9660_rrip_extref (ISO_RRIP_EXTREF *p, 77 ISO_RRIP_ANALYZE *ana); 78 static int cd9660_rrip_idflag (ISO_RRIP_IDFLAG *p, 79 ISO_RRIP_ANALYZE *ana); 80 static int cd9660_rrip_loop (struct iso_directory_record *isodir, 81 ISO_RRIP_ANALYZE *ana, 82 RRIP_TABLE *table); 83 static int cd9660_rrip_pclink (ISO_RRIP_CLINK *p, 84 ISO_RRIP_ANALYZE *ana); 85 static int cd9660_rrip_reldir (ISO_RRIP_RELDIR *p, 86 ISO_RRIP_ANALYZE *ana); 87 static int cd9660_rrip_slink (ISO_RRIP_SLINK *p, 88 ISO_RRIP_ANALYZE *ana); 89 static int cd9660_rrip_stop (ISO_SUSP_HEADER *p, 90 ISO_RRIP_ANALYZE *ana); 91 static int cd9660_rrip_tstamp (ISO_RRIP_TSTAMP *p, 92 ISO_RRIP_ANALYZE *ana); 93 94 /* 95 * POSIX file attribute 96 */ 97 static int 98 cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana) 99 { 100 ana->inop->inode.iso_mode = isonum_733(p->mode); 101 ana->inop->inode.iso_uid = isonum_733(p->uid); 102 ana->inop->inode.iso_gid = isonum_733(p->gid); 103 ana->inop->inode.iso_links = isonum_733(p->links); 104 ana->fields &= ~ISO_SUSP_ATTR; 105 return ISO_SUSP_ATTR; 106 } 107 108 static void 109 cd9660_rrip_defattr(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana) 110 { 111 /* But this is a required field! */ 112 printf("RRIP without PX field?\n"); 113 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP); 114 } 115 116 /* 117 * Symbolic Links 118 */ 119 static int 120 cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana) 121 { 122 ISO_RRIP_SLINK_COMPONENT *pcomp; 123 ISO_RRIP_SLINK_COMPONENT *pcompe; 124 int len, wlen, cont; 125 char *outbuf, *inbuf; 126 127 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component; 128 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length)); 129 len = *ana->outlen; 130 outbuf = ana->outbuf; 131 cont = ana->cont; 132 133 /* 134 * Gathering a Symbolic name from each component with path 135 */ 136 for (; 137 pcomp < pcompe; 138 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ 139 + isonum_711(pcomp->clen))) { 140 141 if (!cont) { 142 if (len < ana->maxlen) { 143 len++; 144 *outbuf++ = '/'; 145 } 146 } 147 cont = 0; 148 149 inbuf = ".."; 150 wlen = 0; 151 152 switch (*pcomp->cflag) { 153 154 case ISO_SUSP_CFLAG_CURRENT: 155 /* Inserting Current */ 156 wlen = 1; 157 break; 158 159 case ISO_SUSP_CFLAG_PARENT: 160 /* Inserting Parent */ 161 wlen = 2; 162 break; 163 164 case ISO_SUSP_CFLAG_ROOT: 165 /* Inserting slash for ROOT */ 166 /* start over from beginning(?) */ 167 outbuf -= len; 168 len = 0; 169 break; 170 171 case ISO_SUSP_CFLAG_VOLROOT: 172 /* Inserting a mount point i.e. "/cdrom" */ 173 /* same as above */ 174 outbuf -= len; 175 len = 0; 176 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname; 177 wlen = strlen(inbuf); 178 break; 179 180 case ISO_SUSP_CFLAG_HOST: 181 /* Inserting hostname i.e. "kurt.tools.de" */ 182 inbuf = hostname; 183 wlen = strlen(hostname); 184 break; 185 186 case ISO_SUSP_CFLAG_CONTINUE: 187 cont = 1; 188 /* fall thru */ 189 case 0: 190 /* Inserting component */ 191 wlen = isonum_711(pcomp->clen); 192 inbuf = pcomp->name; 193 break; 194 default: 195 printf("RRIP with incorrect flags?"); 196 wlen = ana->maxlen + 1; 197 break; 198 } 199 200 if (len + wlen > ana->maxlen) { 201 /* indicate error to caller */ 202 ana->cont = 1; 203 ana->fields = 0; 204 ana->outbuf -= *ana->outlen; 205 *ana->outlen = 0; 206 return 0; 207 } 208 209 bcopy(inbuf,outbuf,wlen); 210 outbuf += wlen; 211 len += wlen; 212 213 } 214 ana->outbuf = outbuf; 215 *ana->outlen = len; 216 ana->cont = cont; 217 218 if (!isonum_711(p->flags)) { 219 ana->fields &= ~ISO_SUSP_SLINK; 220 return ISO_SUSP_SLINK; 221 } 222 return 0; 223 } 224 225 /* 226 * Alternate name 227 */ 228 static int 229 cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana) 230 { 231 char *inbuf; 232 int wlen; 233 int cont; 234 235 inbuf = ".."; 236 wlen = 0; 237 cont = 0; 238 239 switch (*p->flags) { 240 case ISO_SUSP_CFLAG_CURRENT: 241 /* Inserting Current */ 242 wlen = 1; 243 break; 244 245 case ISO_SUSP_CFLAG_PARENT: 246 /* Inserting Parent */ 247 wlen = 2; 248 break; 249 250 case ISO_SUSP_CFLAG_HOST: 251 /* Inserting hostname i.e. "kurt.tools.de" */ 252 inbuf = hostname; 253 wlen = strlen(hostname); 254 break; 255 256 case ISO_SUSP_CFLAG_CONTINUE: 257 cont = 1; 258 /* fall thru */ 259 case 0: 260 /* Inserting component */ 261 wlen = isonum_711(p->h.length) - 5; 262 inbuf = (char *)p + 5; 263 break; 264 265 default: 266 printf("RRIP with incorrect NM flags?\n"); 267 wlen = ana->maxlen + 1; 268 break; 269 } 270 271 if ((*ana->outlen += wlen) > ana->maxlen) { 272 /* treat as no name field */ 273 ana->fields &= ~ISO_SUSP_ALTNAME; 274 ana->outbuf -= *ana->outlen - wlen; 275 *ana->outlen = 0; 276 return 0; 277 } 278 279 bcopy(inbuf,ana->outbuf,wlen); 280 ana->outbuf += wlen; 281 282 if (!cont) { 283 ana->fields &= ~ISO_SUSP_ALTNAME; 284 return ISO_SUSP_ALTNAME; 285 } 286 return 0; 287 } 288 289 static void 290 cd9660_rrip_defname(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana) 291 { 292 isofntrans(isodir->name,isonum_711(isodir->name_len), 293 ana->outbuf,ana->outlen, 294 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level); 295 switch (*ana->outbuf) { 296 default: 297 break; 298 case 1: 299 *ana->outlen = 2; 300 /* FALL THROUGH */ 301 case 0: 302 /* outlen is 1 already */ 303 strcpy(ana->outbuf,".."); 304 break; 305 } 306 } 307 308 /* 309 * Parent or Child Link 310 */ 311 static int 312 cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana) 313 { 314 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift; 315 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK); 316 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK; 317 } 318 319 /* 320 * Relocated directory 321 */ 322 static int 323 cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana) 324 { 325 /* special hack to make caller aware of RE field */ 326 *ana->outlen = 0; 327 ana->fields = 0; 328 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK; 329 } 330 331 static int 332 cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana) 333 { 334 u_char *ptime; 335 336 ptime = p->time; 337 338 /* Check a format of time stamp (7bytes/17bytes) */ 339 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) { 340 if (*p->flags&ISO_SUSP_TSTAMP_CREAT) 341 ptime += 7; 342 343 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) { 344 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime, 345 ISO_FTYPE_RRIP); 346 ptime += 7; 347 } else 348 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec)); 349 350 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) { 351 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime, 352 ISO_FTYPE_RRIP); 353 ptime += 7; 354 } else 355 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime; 356 357 if (*p->flags&ISO_SUSP_TSTAMP_ATTR) 358 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime, 359 ISO_FTYPE_RRIP); 360 else 361 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime; 362 363 } else { 364 if (*p->flags&ISO_SUSP_TSTAMP_CREAT) 365 ptime += 17; 366 367 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) { 368 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime); 369 ptime += 17; 370 } else 371 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec)); 372 373 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) { 374 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime); 375 ptime += 17; 376 } else 377 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime; 378 379 if (*p->flags&ISO_SUSP_TSTAMP_ATTR) 380 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime); 381 else 382 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime; 383 384 } 385 ana->fields &= ~ISO_SUSP_TSTAMP; 386 return ISO_SUSP_TSTAMP; 387 } 388 389 static void 390 cd9660_rrip_deftstamp(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana) 391 { 392 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP); 393 } 394 395 /* 396 * POSIX device modes 397 */ 398 static int 399 cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana) 400 { 401 u_int high, low; 402 403 high = isonum_733(p->dev_t_high); 404 low = isonum_733(p->dev_t_low); 405 406 if (high == 0) 407 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low)); 408 else 409 ana->inop->inode.iso_rdev = makeudev(high, uminor(low)); 410 ana->fields &= ~ISO_SUSP_DEVICE; 411 return ISO_SUSP_DEVICE; 412 } 413 414 /* 415 * Flag indicating 416 */ 417 static int 418 cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana) 419 { 420 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */ 421 /* special handling of RE field */ 422 if (ana->fields&ISO_SUSP_RELDIR) 423 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana); 424 425 return ISO_SUSP_IDFLAG; 426 } 427 428 /* 429 * Continuation pointer 430 */ 431 static int 432 cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana) 433 { 434 ana->iso_ce_blk = isonum_733(p->location); 435 ana->iso_ce_off = isonum_733(p->offset); 436 ana->iso_ce_len = isonum_733(p->length); 437 return ISO_SUSP_CONT; 438 } 439 440 /* 441 * System Use end 442 */ 443 static int 444 cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana) 445 { 446 return ISO_SUSP_STOP; 447 } 448 449 /* 450 * Extension reference 451 */ 452 static int 453 cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana) 454 { 455 if (isonum_711(p->len_id) != 10 456 || bcmp((char *)p + 8,"RRIP_1991A",10) 457 || isonum_711(p->version) != 1) 458 return 0; 459 ana->fields &= ~ISO_SUSP_EXTREF; 460 return ISO_SUSP_EXTREF; 461 } 462 463 static int 464 cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana, 465 RRIP_TABLE *table) 466 { 467 RRIP_TABLE *ptable; 468 ISO_SUSP_HEADER *phead; 469 ISO_SUSP_HEADER *pend; 470 struct buf *bp = NULL; 471 char *pwhead; 472 u_char c; 473 int result; 474 475 /* 476 * Note: If name length is odd, 477 * it will be padding 1 byte after the name 478 */ 479 pwhead = isodir->name + isonum_711(isodir->name_len); 480 if (!(isonum_711(isodir->name_len)&1)) 481 pwhead++; 482 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c); 483 484 /* If it's not the '.' entry of the root dir obey SP field */ 485 if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent) 486 pwhead += ana->imp->rr_skip; 487 else 488 pwhead += ana->imp->rr_skip0; 489 490 phead = (ISO_SUSP_HEADER *)pwhead; 491 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length)); 492 493 result = 0; 494 while (1) { 495 ana->iso_ce_len = 0; 496 /* 497 * Note: "pend" should be more than one SUSP header 498 */ 499 while (pend >= phead + 1) { 500 if (isonum_711(phead->version) == 1) { 501 for (ptable = table; ptable->func; ptable++) { 502 if (*phead->type == *ptable->type 503 && phead->type[1] == ptable->type[1]) { 504 result |= ptable->func(phead,ana); 505 break; 506 } 507 } 508 if (!ana->fields) 509 break; 510 } 511 if (result&ISO_SUSP_STOP) { 512 result &= ~ISO_SUSP_STOP; 513 break; 514 } 515 /* plausibility check */ 516 if (isonum_711(phead->length) < sizeof(*phead)) 517 break; 518 /* 519 * move to next SUSP 520 * Hopefully this works with newer versions, too 521 */ 522 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length)); 523 } 524 525 if (ana->fields && ana->iso_ce_len) { 526 if (ana->iso_ce_blk >= ana->imp->volume_space_size 527 || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size 528 || bread(ana->imp->im_devvp, 529 ana->iso_ce_blk << 530 (ana->imp->im_bshift - DEV_BSHIFT), 531 ana->imp->logical_block_size, &bp)) 532 /* what to do now? */ 533 break; 534 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off); 535 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len); 536 } else 537 break; 538 } 539 if (bp) 540 brelse(bp); 541 /* 542 * If we don't find the Basic SUSP stuffs, just set default value 543 * (attribute/time stamp) 544 */ 545 for (ptable = table; ptable->func2; ptable++) 546 if (!(ptable->result&result)) 547 ptable->func2(isodir,ana); 548 549 return result; 550 } 551 552 /* 553 * Get Attributes. 554 */ 555 /* 556 * XXX the casts are bogus but will do for now. 557 */ 558 #define BC (rrt_func_t *) 559 static RRIP_TABLE rrip_table_analyze[] = { 560 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR }, 561 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP }, 562 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE }, 563 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 564 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 565 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 566 { "", 0, 0, 0 } 567 }; 568 569 int 570 cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop, 571 struct iso_mnt *imp) 572 { 573 ISO_RRIP_ANALYZE analyze; 574 575 analyze.inop = inop; 576 analyze.imp = imp; 577 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE; 578 579 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze); 580 } 581 582 /* 583 * Get Alternate Name. 584 */ 585 static RRIP_TABLE rrip_table_getname[] = { 586 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME }, 587 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK }, 588 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK }, 589 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR }, 590 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 591 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 592 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 593 { "", 0, 0, 0 } 594 }; 595 596 int 597 cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf, 598 u_short *outlen, ino_t *inump, struct iso_mnt *imp) 599 { 600 ISO_RRIP_ANALYZE analyze; 601 RRIP_TABLE *tab; 602 u_char c; 603 604 analyze.outbuf = outbuf; 605 analyze.outlen = outlen; 606 analyze.maxlen = NAME_MAX; 607 analyze.inump = inump; 608 analyze.imp = imp; 609 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK; 610 *outlen = 0; 611 612 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len), 613 imp->joliet_level, &c); 614 tab = rrip_table_getname; 615 if (c == 0 || c == 1) { 616 cd9660_rrip_defname(isodir,&analyze); 617 618 analyze.fields &= ~ISO_SUSP_ALTNAME; 619 tab++; 620 } 621 622 return cd9660_rrip_loop(isodir,&analyze,tab); 623 } 624 625 /* 626 * Get Symbolic Link. 627 */ 628 static RRIP_TABLE rrip_table_getsymname[] = { 629 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK }, 630 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 631 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 632 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 633 { "", 0, 0, 0 } 634 }; 635 636 int 637 cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf, 638 u_short *outlen, struct iso_mnt *imp) 639 { 640 ISO_RRIP_ANALYZE analyze; 641 642 analyze.outbuf = outbuf; 643 analyze.outlen = outlen; 644 *outlen = 0; 645 analyze.maxlen = MAXPATHLEN; 646 analyze.cont = 1; /* don't start with a slash */ 647 analyze.imp = imp; 648 analyze.fields = ISO_SUSP_SLINK; 649 650 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK); 651 } 652 653 static RRIP_TABLE rrip_table_extref[] = { 654 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF }, 655 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 656 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 657 { "", 0, 0, 0 } 658 }; 659 660 /* 661 * Check for Rock Ridge Extension and return offset of its fields. 662 * Note: We insist on the ER field. 663 */ 664 int 665 cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp) 666 { 667 ISO_RRIP_OFFSET *p; 668 ISO_RRIP_ANALYZE analyze; 669 670 imp->rr_skip0 = 0; 671 p = (ISO_RRIP_OFFSET *)(isodir->name + 1); 672 if (bcmp(p,"SP\7\1\276\357",6)) { 673 /* Maybe, it's a CDROM XA disc? */ 674 imp->rr_skip0 = 15; 675 p = (ISO_RRIP_OFFSET *)((char *)p + 15); 676 if (bcmp(p,"SP\7\1\276\357",6)) 677 return -1; 678 } 679 680 analyze.imp = imp; 681 analyze.fields = ISO_SUSP_EXTREF; 682 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF)) 683 return -1; 684 685 return isonum_711(p->skip); 686 } 687