cd9660_rrip.c revision 93075
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: head/sys/fs/cd9660/cd9660_rrip.c 93075 2002-03-24 04:35:23Z bde $ 40 */ 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/bio.h> 45#include <sys/buf.h> 46#include <sys/vnode.h> 47#include <sys/mount.h> 48#include <sys/kernel.h> 49 50#include <isofs/cd9660/iso.h> 51#include <isofs/cd9660/cd9660_node.h> 52#include <isofs/cd9660/cd9660_rrip.h> 53#include <isofs/cd9660/iso_rrip.h> 54 55typedef int rrt_func_t(void *, ISO_RRIP_ANALYZE *ana); 56 57typedef 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 64static int cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana); 65static int cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana); 66static int cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana); 67static void cd9660_rrip_defattr(struct iso_directory_record *isodir, 68 ISO_RRIP_ANALYZE *ana); 69static void cd9660_rrip_defname(struct iso_directory_record *isodir, 70 ISO_RRIP_ANALYZE *ana); 71static void cd9660_rrip_deftstamp(struct iso_directory_record *isodir, 72 ISO_RRIP_ANALYZE *ana); 73static int cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana); 74static int cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana); 75static int cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana); 76static int cd9660_rrip_loop(struct iso_directory_record *isodir, 77 ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table); 78static int cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana); 79static int cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana); 80static int cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana); 81static int cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana); 82static int cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana); 83 84/* 85 * POSIX file attribute 86 */ 87static int 88cd9660_rrip_attr(p,ana) 89 ISO_RRIP_ATTR *p; 90 ISO_RRIP_ANALYZE *ana; 91{ 92 ana->inop->inode.iso_mode = isonum_733(p->mode); 93 ana->inop->inode.iso_uid = isonum_733(p->uid); 94 ana->inop->inode.iso_gid = isonum_733(p->gid); 95 ana->inop->inode.iso_links = isonum_733(p->links); 96 ana->fields &= ~ISO_SUSP_ATTR; 97 return ISO_SUSP_ATTR; 98} 99 100static void 101cd9660_rrip_defattr(isodir,ana) 102 struct iso_directory_record *isodir; 103 ISO_RRIP_ANALYZE *ana; 104{ 105 /* But this is a required field! */ 106 printf("RRIP without PX field?\n"); 107 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP); 108} 109 110/* 111 * Symbolic Links 112 */ 113static int 114cd9660_rrip_slink(p,ana) 115 ISO_RRIP_SLINK *p; 116 ISO_RRIP_ANALYZE *ana; 117{ 118 register ISO_RRIP_SLINK_COMPONENT *pcomp; 119 register ISO_RRIP_SLINK_COMPONENT *pcompe; 120 int len, wlen, cont; 121 char *outbuf, *inbuf; 122 123 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component; 124 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length)); 125 len = *ana->outlen; 126 outbuf = ana->outbuf; 127 cont = ana->cont; 128 129 /* 130 * Gathering a Symbolic name from each component with path 131 */ 132 for (; 133 pcomp < pcompe; 134 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ 135 + isonum_711(pcomp->clen))) { 136 137 if (!cont) { 138 if (len < ana->maxlen) { 139 len++; 140 *outbuf++ = '/'; 141 } 142 } 143 cont = 0; 144 145 inbuf = ".."; 146 wlen = 0; 147 148 switch (*pcomp->cflag) { 149 150 case ISO_SUSP_CFLAG_CURRENT: 151 /* Inserting Current */ 152 wlen = 1; 153 break; 154 155 case ISO_SUSP_CFLAG_PARENT: 156 /* Inserting Parent */ 157 wlen = 2; 158 break; 159 160 case ISO_SUSP_CFLAG_ROOT: 161 /* Inserting slash for ROOT */ 162 /* start over from beginning(?) */ 163 outbuf -= len; 164 len = 0; 165 break; 166 167 case ISO_SUSP_CFLAG_VOLROOT: 168 /* Inserting a mount point i.e. "/cdrom" */ 169 /* same as above */ 170 outbuf -= len; 171 len = 0; 172 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname; 173 wlen = strlen(inbuf); 174 break; 175 176 case ISO_SUSP_CFLAG_HOST: 177 /* Inserting hostname i.e. "kurt.tools.de" */ 178 inbuf = hostname; 179 wlen = strlen(hostname); 180 break; 181 182 case ISO_SUSP_CFLAG_CONTINUE: 183 cont = 1; 184 /* fall thru */ 185 case 0: 186 /* Inserting component */ 187 wlen = isonum_711(pcomp->clen); 188 inbuf = pcomp->name; 189 break; 190 default: 191 printf("RRIP with incorrect flags?"); 192 wlen = ana->maxlen + 1; 193 break; 194 } 195 196 if (len + wlen > ana->maxlen) { 197 /* indicate error to caller */ 198 ana->cont = 1; 199 ana->fields = 0; 200 ana->outbuf -= *ana->outlen; 201 *ana->outlen = 0; 202 return 0; 203 } 204 205 bcopy(inbuf,outbuf,wlen); 206 outbuf += wlen; 207 len += wlen; 208 209 } 210 ana->outbuf = outbuf; 211 *ana->outlen = len; 212 ana->cont = cont; 213 214 if (!isonum_711(p->flags)) { 215 ana->fields &= ~ISO_SUSP_SLINK; 216 return ISO_SUSP_SLINK; 217 } 218 return 0; 219} 220 221/* 222 * Alternate name 223 */ 224static int 225cd9660_rrip_altname(p,ana) 226 ISO_RRIP_ALTNAME *p; 227 ISO_RRIP_ANALYZE *ana; 228{ 229 char *inbuf; 230 int wlen; 231 int cont; 232 233 inbuf = ".."; 234 wlen = 0; 235 cont = 0; 236 237 switch (*p->flags) { 238 case ISO_SUSP_CFLAG_CURRENT: 239 /* Inserting Current */ 240 wlen = 1; 241 break; 242 243 case ISO_SUSP_CFLAG_PARENT: 244 /* Inserting Parent */ 245 wlen = 2; 246 break; 247 248 case ISO_SUSP_CFLAG_HOST: 249 /* Inserting hostname i.e. "kurt.tools.de" */ 250 inbuf = hostname; 251 wlen = strlen(hostname); 252 break; 253 254 case ISO_SUSP_CFLAG_CONTINUE: 255 cont = 1; 256 /* fall thru */ 257 case 0: 258 /* Inserting component */ 259 wlen = isonum_711(p->h.length) - 5; 260 inbuf = (char *)p + 5; 261 break; 262 263 default: 264 printf("RRIP with incorrect NM flags?\n"); 265 wlen = ana->maxlen + 1; 266 break; 267 } 268 269 if ((*ana->outlen += wlen) > ana->maxlen) { 270 /* treat as no name field */ 271 ana->fields &= ~ISO_SUSP_ALTNAME; 272 ana->outbuf -= *ana->outlen - wlen; 273 *ana->outlen = 0; 274 return 0; 275 } 276 277 bcopy(inbuf,ana->outbuf,wlen); 278 ana->outbuf += wlen; 279 280 if (!cont) { 281 ana->fields &= ~ISO_SUSP_ALTNAME; 282 return ISO_SUSP_ALTNAME; 283 } 284 return 0; 285} 286 287static void 288cd9660_rrip_defname(isodir,ana) 289 struct iso_directory_record *isodir; 290 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 */ 311static int 312cd9660_rrip_pclink(p,ana) 313 ISO_RRIP_CLINK *p; 314 ISO_RRIP_ANALYZE *ana; 315{ 316 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift; 317 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK); 318 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK; 319} 320 321/* 322 * Relocated directory 323 */ 324static int 325cd9660_rrip_reldir(p,ana) 326 ISO_RRIP_RELDIR *p; 327 ISO_RRIP_ANALYZE *ana; 328{ 329 /* special hack to make caller aware of RE field */ 330 *ana->outlen = 0; 331 ana->fields = 0; 332 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK; 333} 334 335static int 336cd9660_rrip_tstamp(p,ana) 337 ISO_RRIP_TSTAMP *p; 338 ISO_RRIP_ANALYZE *ana; 339{ 340 u_char *ptime; 341 342 ptime = p->time; 343 344 /* Check a format of time stamp (7bytes/17bytes) */ 345 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) { 346 if (*p->flags&ISO_SUSP_TSTAMP_CREAT) 347 ptime += 7; 348 349 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) { 350 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime, 351 ISO_FTYPE_RRIP); 352 ptime += 7; 353 } else 354 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec)); 355 356 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) { 357 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime, 358 ISO_FTYPE_RRIP); 359 ptime += 7; 360 } else 361 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime; 362 363 if (*p->flags&ISO_SUSP_TSTAMP_ATTR) 364 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime, 365 ISO_FTYPE_RRIP); 366 else 367 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime; 368 369 } else { 370 if (*p->flags&ISO_SUSP_TSTAMP_CREAT) 371 ptime += 17; 372 373 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) { 374 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime); 375 ptime += 17; 376 } else 377 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec)); 378 379 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) { 380 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime); 381 ptime += 17; 382 } else 383 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime; 384 385 if (*p->flags&ISO_SUSP_TSTAMP_ATTR) 386 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime); 387 else 388 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime; 389 390 } 391 ana->fields &= ~ISO_SUSP_TSTAMP; 392 return ISO_SUSP_TSTAMP; 393} 394 395static void 396cd9660_rrip_deftstamp(isodir,ana) 397 struct iso_directory_record *isodir; 398 ISO_RRIP_ANALYZE *ana; 399{ 400 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP); 401} 402 403/* 404 * POSIX device modes 405 */ 406static int 407cd9660_rrip_device(p,ana) 408 ISO_RRIP_DEVICE *p; 409 ISO_RRIP_ANALYZE *ana; 410{ 411 u_int high, low; 412 413 high = isonum_733(p->dev_t_high); 414 low = isonum_733(p->dev_t_low); 415 416 if (high == 0) 417 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low)); 418 else 419 ana->inop->inode.iso_rdev = makeudev(high, uminor(low)); 420 ana->fields &= ~ISO_SUSP_DEVICE; 421 return ISO_SUSP_DEVICE; 422} 423 424/* 425 * Flag indicating 426 */ 427static int 428cd9660_rrip_idflag(p,ana) 429 ISO_RRIP_IDFLAG *p; 430 ISO_RRIP_ANALYZE *ana; 431{ 432 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */ 433 /* special handling of RE field */ 434 if (ana->fields&ISO_SUSP_RELDIR) 435 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana); 436 437 return ISO_SUSP_IDFLAG; 438} 439 440/* 441 * Continuation pointer 442 */ 443static int 444cd9660_rrip_cont(p,ana) 445 ISO_RRIP_CONT *p; 446 ISO_RRIP_ANALYZE *ana; 447{ 448 ana->iso_ce_blk = isonum_733(p->location); 449 ana->iso_ce_off = isonum_733(p->offset); 450 ana->iso_ce_len = isonum_733(p->length); 451 return ISO_SUSP_CONT; 452} 453 454/* 455 * System Use end 456 */ 457static int 458cd9660_rrip_stop(p,ana) 459 ISO_SUSP_HEADER *p; 460 ISO_RRIP_ANALYZE *ana; 461{ 462 return ISO_SUSP_STOP; 463} 464 465/* 466 * Extension reference 467 */ 468static int 469cd9660_rrip_extref(p,ana) 470 ISO_RRIP_EXTREF *p; 471 ISO_RRIP_ANALYZE *ana; 472{ 473 if (isonum_711(p->len_id) != 10 474 || bcmp((char *)p + 8,"RRIP_1991A",10) 475 || isonum_711(p->version) != 1) 476 return 0; 477 ana->fields &= ~ISO_SUSP_EXTREF; 478 return ISO_SUSP_EXTREF; 479} 480 481static int 482cd9660_rrip_loop(isodir,ana,table) 483 struct iso_directory_record *isodir; 484 ISO_RRIP_ANALYZE *ana; 485 RRIP_TABLE *table; 486{ 487 register RRIP_TABLE *ptable; 488 register ISO_SUSP_HEADER *phead; 489 register ISO_SUSP_HEADER *pend; 490 struct buf *bp = NULL; 491 char *pwhead; 492 u_char c; 493 int result; 494 495 /* 496 * Note: If name length is odd, 497 * it will be padding 1 byte after the name 498 */ 499 pwhead = isodir->name + isonum_711(isodir->name_len); 500 if (!(isonum_711(isodir->name_len)&1)) 501 pwhead++; 502 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c); 503 504 /* If it's not the '.' entry of the root dir obey SP field */ 505 if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent) 506 pwhead += ana->imp->rr_skip; 507 else 508 pwhead += ana->imp->rr_skip0; 509 510 phead = (ISO_SUSP_HEADER *)pwhead; 511 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length)); 512 513 result = 0; 514 while (1) { 515 ana->iso_ce_len = 0; 516 /* 517 * Note: "pend" should be more than one SUSP header 518 */ 519 while (pend >= phead + 1) { 520 if (isonum_711(phead->version) == 1) { 521 for (ptable = table; ptable->func; ptable++) { 522 if (*phead->type == *ptable->type 523 && phead->type[1] == ptable->type[1]) { 524 result |= ptable->func(phead,ana); 525 break; 526 } 527 } 528 if (!ana->fields) 529 break; 530 } 531 if (result&ISO_SUSP_STOP) { 532 result &= ~ISO_SUSP_STOP; 533 break; 534 } 535 /* plausibility check */ 536 if (isonum_711(phead->length) < sizeof(*phead)) 537 break; 538 /* 539 * move to next SUSP 540 * Hopefully this works with newer versions, too 541 */ 542 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length)); 543 } 544 545 if (ana->fields && ana->iso_ce_len) { 546 if (ana->iso_ce_blk >= ana->imp->volume_space_size 547 || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size 548 || bread(ana->imp->im_devvp, 549 ana->iso_ce_blk << 550 (ana->imp->im_bshift - DEV_BSHIFT), 551 ana->imp->logical_block_size, NOCRED, &bp)) 552 /* what to do now? */ 553 break; 554 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off); 555 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len); 556 } else 557 break; 558 } 559 if (bp) 560 brelse(bp); 561 /* 562 * If we don't find the Basic SUSP stuffs, just set default value 563 * (attribute/time stamp) 564 */ 565 for (ptable = table; ptable->func2; ptable++) 566 if (!(ptable->result&result)) 567 ptable->func2(isodir,ana); 568 569 return result; 570} 571 572/* 573 * Get Attributes. 574 */ 575/* 576 * XXX the casts are bogus but will do for now. 577 */ 578#define BC (rrt_func_t *) 579static RRIP_TABLE rrip_table_analyze[] = { 580 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR }, 581 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP }, 582 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE }, 583 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 584 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 585 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 586 { "", 0, 0, 0 } 587}; 588 589int 590cd9660_rrip_analyze(isodir,inop,imp) 591 struct iso_directory_record *isodir; 592 struct iso_node *inop; 593 struct iso_mnt *imp; 594{ 595 ISO_RRIP_ANALYZE analyze; 596 597 analyze.inop = inop; 598 analyze.imp = imp; 599 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE; 600 601 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze); 602} 603 604/* 605 * Get Alternate Name. 606 */ 607static RRIP_TABLE rrip_table_getname[] = { 608 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME }, 609 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK }, 610 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK }, 611 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR }, 612 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 613 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 614 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 615 { "", 0, 0, 0 } 616}; 617 618int 619cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp) 620 struct iso_directory_record *isodir; 621 char *outbuf; 622 u_short *outlen; 623 ino_t *inump; 624 struct iso_mnt *imp; 625{ 626 ISO_RRIP_ANALYZE analyze; 627 RRIP_TABLE *tab; 628 u_char c; 629 630 analyze.outbuf = outbuf; 631 analyze.outlen = outlen; 632 analyze.maxlen = NAME_MAX; 633 analyze.inump = inump; 634 analyze.imp = imp; 635 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK; 636 *outlen = 0; 637 638 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len), 639 imp->joliet_level, &c); 640 tab = rrip_table_getname; 641 if (c == 0 || c == 1) { 642 cd9660_rrip_defname(isodir,&analyze); 643 644 analyze.fields &= ~ISO_SUSP_ALTNAME; 645 tab++; 646 } 647 648 return cd9660_rrip_loop(isodir,&analyze,tab); 649} 650 651/* 652 * Get Symbolic Link. 653 */ 654static RRIP_TABLE rrip_table_getsymname[] = { 655 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK }, 656 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG }, 657 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 658 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 659 { "", 0, 0, 0 } 660}; 661 662int 663cd9660_rrip_getsymname(isodir,outbuf,outlen,imp) 664 struct iso_directory_record *isodir; 665 char *outbuf; 666 u_short *outlen; 667 struct iso_mnt *imp; 668{ 669 ISO_RRIP_ANALYZE analyze; 670 671 analyze.outbuf = outbuf; 672 analyze.outlen = outlen; 673 *outlen = 0; 674 analyze.maxlen = MAXPATHLEN; 675 analyze.cont = 1; /* don't start with a slash */ 676 analyze.imp = imp; 677 analyze.fields = ISO_SUSP_SLINK; 678 679 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK); 680} 681 682static RRIP_TABLE rrip_table_extref[] = { 683 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF }, 684 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT }, 685 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP }, 686 { "", 0, 0, 0 } 687}; 688 689/* 690 * Check for Rock Ridge Extension and return offset of its fields. 691 * Note: We insist on the ER field. 692 */ 693int 694cd9660_rrip_offset(isodir,imp) 695 struct iso_directory_record *isodir; 696 struct iso_mnt *imp; 697{ 698 ISO_RRIP_OFFSET *p; 699 ISO_RRIP_ANALYZE analyze; 700 701 imp->rr_skip0 = 0; 702 p = (ISO_RRIP_OFFSET *)(isodir->name + 1); 703 if (bcmp(p,"SP\7\1\276\357",6)) { 704 /* Maybe, it's a CDROM XA disc? */ 705 imp->rr_skip0 = 15; 706 p = (ISO_RRIP_OFFSET *)((char *)p + 15); 707 if (bcmp(p,"SP\7\1\276\357",6)) 708 return -1; 709 } 710 711 analyze.imp = imp; 712 analyze.fields = ISO_SUSP_EXTREF; 713 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF)) 714 return -1; 715 716 return isonum_711(p->skip); 717} 718