bsd/isofs/cd9660/cd9660_rrip.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*      $NetBSD: cd9660_rrip.c,v 1.11 1994/12/24 15:30:10 cgd Exp $     */
  26
  27 /*-
  28  * Copyright (c) 1993, 1994
  29  *      The Regents of the University of California.  All rights reserved.
  30  *
  31  * This code is derived from software contributed to Berkeley
  32  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
  33  * Support code is derived from software contributed to Berkeley
  34  * by Atsushi Murai (amurai@spec.co.jp).
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)cd9660_rrip.c       8.6 (Berkeley) 12/5/94
  65
  66
  67
  68  * HISTORY
  69  * 22-Jan-98    radar 1669467 - ISO 9660 CD support - jwc
  70
  71  */
  72
  73 #include <sys/param.h>
  74 #include <sys/systm.h>
  75 #include <sys/vnode.h>
  76 #include <sys/mount.h>
  77 #include <sys/namei.h>
  78 #include <sys/buf.h>
  79 #include <sys/file.h>
  80 #include <sys/kernel.h>
  81 #include <sys/stat.h>
  82 #include <sys/types.h>
  83
  84 #include <sys/time.h>
  85
  86 #include <isofs/cd9660/iso.h>
  87 #include <isofs/cd9660/cd9660_node.h>
  88 #include <isofs/cd9660/cd9660_rrip.h>
  89 #include <isofs/cd9660/iso_rrip.h>
  90
  91 /*
  92  * POSIX file attribute
  93  */
  94 static int
  95 cd9660_rrip_attr(p,ana)
  96         ISO_RRIP_ATTR *p;
  97         ISO_RRIP_ANALYZE *ana;
  98 {
  99         ana->inop->inode.iso_mode = isonum_733(p->mode);
 100         ana->inop->inode.iso_uid = isonum_733(p->uid);
 101         ana->inop->inode.iso_gid = isonum_733(p->gid);
 102         ana->inop->inode.iso_links = isonum_733(p->links);
 103         ana->fields &= ~ISO_SUSP_ATTR;
 104         return ISO_SUSP_ATTR;
 105 }
 106
 107 static void
 108 cd9660_rrip_defattr(isodir,ana)
 109         struct iso_directory_record *isodir;
 110         ISO_RRIP_ANALYZE *ana;
 111 {
 112         /* But this is a required field! */
 113         printf("RRIP without PX field?\n");
 114         cd9660_defattr(isodir,ana->inop,NULL);
 115 }
 116
 117 /*
 118  * Symbolic Links
 119  */
 120 static int
 121 cd9660_rrip_slink(p,ana)
 122         ISO_RRIP_SLINK  *p;
 123         ISO_RRIP_ANALYZE *ana;
 124 {
 125         register ISO_RRIP_SLINK_COMPONENT *pcomp;
 126         register ISO_RRIP_SLINK_COMPONENT *pcompe;
 127         int len, wlen, cont;
 128         char *outbuf, *inbuf;
 129
 130         pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
 131         pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
 132         len = *ana->outlen;
 133         outbuf = ana->outbuf;
 134         cont = ana->cont;
 135
 136         /*
 137          * Gathering a Symbolic name from each component with path
 138          */
 139         for (;
 140              pcomp < pcompe;
 141              pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
 142                                                   + isonum_711(pcomp->clen))) {
 143
 144                 if (!cont) {
 145                         if (len < ana->maxlen) {
 146                                 len++;
 147                                 *outbuf++ = '/';
 148                         }
 149                 }
 150                 cont = 0;
 151
 152                 inbuf = "..";
 153                 wlen = 0;
 154
 155                 switch (*pcomp->cflag) {
 156
 157                 case ISO_SUSP_CFLAG_CURRENT:
 158                         /* Inserting Current */
 159                         wlen = 1;
 160                         break;
 161
 162                 case ISO_SUSP_CFLAG_PARENT:
 163                         /* Inserting Parent */
 164                         wlen = 2;
 165                         break;
 166
 167                 case ISO_SUSP_CFLAG_ROOT:
 168                         /* Inserting slash for ROOT */
 169                         /* start over from beginning(?) */
 170                         outbuf -= len;
 171                         len = 0;
 172                         break;
 173
 174                 case ISO_SUSP_CFLAG_VOLROOT:
 175                         /* Inserting a mount point i.e. "/cdrom" */
 176                         /* same as above */
 177                         outbuf -= len;
 178                         len = 0;
 179                         inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
 180                         wlen = strlen(inbuf);
 181                         break;
 182
 183                 case ISO_SUSP_CFLAG_HOST:
 184                         /* Inserting hostname i.e. "kurt.tools.de" */
 185                         inbuf = hostname;
 186                         wlen = hostnamelen;
 187                         break;
 188
 189                 case ISO_SUSP_CFLAG_CONTINUE:
 190                         cont = 1;
 191                         /* fall thru */
 192                 case 0:
 193                         /* Inserting component */
 194                         wlen = isonum_711(pcomp->clen);
 195                         inbuf = pcomp->name;
 196                         break;
 197                 default:
 198                         printf("RRIP with incorrect flags?");
 199                         wlen = ana->maxlen + 1;
 200                         break;
 201                 }
 202
 203                 if (len + wlen > ana->maxlen) {
 204                         /* indicate error to caller */
 205                         ana->cont = 1;
 206                         ana->fields = 0;
 207                         ana->outbuf -= *ana->outlen;
 208                         *ana->outlen = 0;
 209                         return 0;
 210                 }
 211
 212                 bcopy(inbuf,outbuf,wlen);
 213                 outbuf += wlen;
 214                 len += wlen;
 215
 216         }
 217         ana->outbuf = outbuf;
 218         *ana->outlen = len;
 219         ana->cont = cont;
 220
 221         if (!isonum_711(p->flags)) {
 222                 ana->fields &= ~ISO_SUSP_SLINK;
 223                 return ISO_SUSP_SLINK;
 224         }
 225         return 0;
 226 }
 227
 228 /*
 229  * Alternate name
 230  */
 231 static int
 232 cd9660_rrip_altname(p,ana)
 233         ISO_RRIP_ALTNAME *p;
 234         ISO_RRIP_ANALYZE *ana;
 235 {
 236         char *inbuf;
 237         int wlen;
 238         int cont;
 239
 240         inbuf = "..";
 241         wlen = 0;
 242         cont = 0;
 243
 244         switch (*p->flags) {
 245         case ISO_SUSP_CFLAG_CURRENT:
 246                 /* Inserting Current */
 247                 wlen = 1;
 248                 break;
 249
 250         case ISO_SUSP_CFLAG_PARENT:
 251                 /* Inserting Parent */
 252                 wlen = 2;
 253                 break;
 254
 255         case ISO_SUSP_CFLAG_HOST:
 256                 /* Inserting hostname i.e. "kurt.tools.de" */
 257                 inbuf = hostname;
 258                 wlen = hostnamelen;
 259                 break;
 260
 261         case ISO_SUSP_CFLAG_CONTINUE:
 262                 cont = 1;
 263                 /* fall thru */
 264         case 0:
 265                 /* Inserting component */
 266                 wlen = isonum_711(p->h.length) - 5;
 267                 inbuf = (char *)p + 5;
 268                 break;
 269
 270         default:
 271                 printf("RRIP with incorrect NM flags?\n");
 272                 wlen = ana->maxlen + 1;
 273                 break;
 274         }
 275
 276         if ((*ana->outlen += wlen) > ana->maxlen) {
 277                 /* treat as no name field */
 278                 ana->fields &= ~ISO_SUSP_ALTNAME;
 279                 ana->outbuf -= *ana->outlen - wlen;
 280                 *ana->outlen = 0;
 281                 return 0;
 282         }
 283
 284         bcopy(inbuf,ana->outbuf,wlen);
 285         ana->outbuf += wlen;
 286
 287         if (!cont) {
 288                 ana->fields &= ~ISO_SUSP_ALTNAME;
 289                 return ISO_SUSP_ALTNAME;
 290         }
 291         return 0;
 292 }
 293
 294 static void
 295 cd9660_rrip_defname(isodir,ana)
 296         struct iso_directory_record *isodir;
 297         ISO_RRIP_ANALYZE *ana;
 298 {
 299         strcpy(ana->outbuf,"..");
 300         switch (*isodir->name) {
 301         default:
 302                 isofntrans(isodir->name, isonum_711(isodir->name_len),
 303                            ana->outbuf, ana->outlen, 1,
 304                            isonum_711(isodir->flags) & associatedBit);
 305                 break;
 306         case 0:
 307                 *ana->outlen = 1;
 308                 break;
 309         case 1:
 310                 *ana->outlen = 2;
 311                 break;
 312         }
 313 }
 314
 315 /*
 316  * Parent or Child Link
 317  */
 318 static int
 319 cd9660_rrip_pclink(p,ana)
 320         ISO_RRIP_CLINK  *p;
 321         ISO_RRIP_ANALYZE *ana;
 322 {
 323         *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
 324         ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
 325         return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
 326 }
 327
 328 /*
 329  * Relocated directory
 330  */
 331 static int
 332 cd9660_rrip_reldir(p,ana)
 333         ISO_RRIP_RELDIR  *p;
 334         ISO_RRIP_ANALYZE *ana;
 335 {
 336         /* special hack to make caller aware of RE field */
 337         *ana->outlen = 0;
 338         ana->fields = 0;
 339         return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
 340 }
 341
 342 static int
 343 cd9660_rrip_tstamp(p,ana)
 344         ISO_RRIP_TSTAMP *p;
 345         ISO_RRIP_ANALYZE *ana;
 346 {
 347         u_char *ptime;
 348
 349         ptime = p->time;
 350
 351         /* Check a format of time stamp (7bytes/17bytes) */
 352         if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
 353                 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
 354                         ptime += 7;
 355
 356                 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
 357                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime);
 358                         ptime += 7;
 359                 } else
 360                         bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
 361
 362                 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
 363                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime);
 364                         ptime += 7;
 365                 } else
 366                         ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
 367
 368                 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
 369                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime);
 370                 else
 371                         ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
 372
 373         } else {
 374                 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
 375                         ptime += 17;
 376
 377                 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
 378                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
 379                         ptime += 17;
 380                 } else
 381                         bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
 382
 383                 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
 384                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
 385                         ptime += 17;
 386                 } else
 387                         ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
 388
 389                 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
 390                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
 391                 else
 392                         ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
 393
 394         }
 395         ana->fields &= ~ISO_SUSP_TSTAMP;
 396         return ISO_SUSP_TSTAMP;
 397 }
 398
 399 static void
 400 cd9660_rrip_deftstamp(isodir,ana)
 401         struct iso_directory_record  *isodir;
 402         ISO_RRIP_ANALYZE *ana;
 403 {
 404         cd9660_deftstamp(isodir,ana->inop,NULL);
 405 }
 406
 407 /*
 408  * POSIX device modes
 409  */
 410 static int
 411 cd9660_rrip_device(p,ana)
 412         ISO_RRIP_DEVICE *p;
 413         ISO_RRIP_ANALYZE *ana;
 414 {
 415         u_int high, low;
 416
 417         high = isonum_733(p->dev_t_high);
 418         low  = isonum_733(p->dev_t_low);
 419
 420         if (high == 0)
 421                 ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
 422         else
 423                 ana->inop->inode.iso_rdev = makedev(high, minor(low));
 424         ana->fields &= ~ISO_SUSP_DEVICE;
 425         return ISO_SUSP_DEVICE;
 426 }
 427
 428 /*
 429  * Flag indicating
 430  */
 431 static int
 432 cd9660_rrip_idflag(p,ana)
 433         ISO_RRIP_IDFLAG *p;
 434         ISO_RRIP_ANALYZE *ana;
 435 {
 436         ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
 437         /* special handling of RE field */
 438         if (ana->fields&ISO_SUSP_RELDIR)
 439                 return cd9660_rrip_reldir(p,ana);
 440
 441         return ISO_SUSP_IDFLAG;
 442 }
 443
 444 /*
 445  * Continuation pointer
 446  */
 447 static int
 448 cd9660_rrip_cont(p,ana)
 449         ISO_RRIP_CONT *p;
 450         ISO_RRIP_ANALYZE *ana;
 451 {
 452         ana->iso_ce_blk = isonum_733(p->location);
 453         ana->iso_ce_off = isonum_733(p->offset);
 454         ana->iso_ce_len = isonum_733(p->length);
 455         return ISO_SUSP_CONT;
 456 }
 457
 458 /*
 459  * System Use end
 460  */
 461 static int
 462 cd9660_rrip_stop(p,ana)
 463         ISO_SUSP_HEADER *p;
 464         ISO_RRIP_ANALYZE *ana;
 465 {
 466         return ISO_SUSP_STOP;
 467 }
 468
 469 /*
 470  * Extension reference
 471  */
 472 static int
 473 cd9660_rrip_extref(p,ana)
 474         ISO_RRIP_EXTREF *p;
 475         ISO_RRIP_ANALYZE *ana;
 476 {
 477         if (isonum_711(p->len_id) != 10
 478             || bcmp((char *)p + 8,"RRIP_1991A",10)
 479             || isonum_711(p->version) != 1)
 480                 return 0;
 481         ana->fields &= ~ISO_SUSP_EXTREF;
 482         return ISO_SUSP_EXTREF;
 483 }
 484
 485 typedef struct {
 486         char type[2];
 487         int (*func)();
 488         void (*func2)();
 489         int result;
 490 } RRIP_TABLE;
 491
 492 static int
 493 cd9660_rrip_loop(isodir,ana,table)
 494         struct iso_directory_record *isodir;
 495         ISO_RRIP_ANALYZE *ana;
 496         RRIP_TABLE *table;
 497 {
 498         register RRIP_TABLE *ptable;
 499         register ISO_SUSP_HEADER *phead;
 500         register ISO_SUSP_HEADER *pend;
 501         struct buf *bp = NULL;
 502         char *pwhead;
 503         int result;
 504
 505         /*
 506          * Note: If name length is odd,
 507          *       it will be padding 1 byte  after the name
 508          */
 509         pwhead = isodir->name + isonum_711(isodir->name_len);
 510         if (!(isonum_711(isodir->name_len)&1))
 511                 pwhead++;
 512
 513         /* If it's not the '.' entry of the root dir obey SP field */
 514         if (*isodir->name != 0
 515             || isonum_733(isodir->extent) != ana->imp->root_extent)
 516                 pwhead += ana->imp->rr_skip;
 517         else
 518                 pwhead += ana->imp->rr_skip0;
 519
 520         phead = (ISO_SUSP_HEADER *)pwhead;
 521         pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
 522
 523         result = 0;
 524         while (1) {
 525                 ana->iso_ce_len = 0;
 526                 /*
 527                  * Note: "pend" should be more than one SUSP header
 528                  */
 529                 while (pend >= phead + 1) {
 530                         if (isonum_711(phead->version) == 1) {
 531                                 for (ptable = table; ptable->func; ptable++) {
 532                                         if (*phead->type == *ptable->type
 533                                             && phead->type[1] == ptable->type[1]) {
 534                                                 result |= ptable->func(phead,ana);
 535                                                 break;
 536                                         }
 537                                 }
 538                                 if (!ana->fields)
 539                                         break;
 540                         }
 541                         if (result&ISO_SUSP_STOP) {
 542                                 result &= ~ISO_SUSP_STOP;
 543                                 break;
 544                         }
 545                         /* plausibility check */
 546                         if (isonum_711(phead->length) < sizeof(*phead))
 547                                 break;
 548                         /*
 549                          * move to next SUSP
 550                          * Hopefully this works with newer versions, too
 551                          */
 552                         phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
 553                 }
 554
 555                 if (ana->fields && ana->iso_ce_len) {
 556                         if (ana->iso_ce_blk >= ana->imp->volume_space_size
 557                             || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
 558                             || bread(ana->imp->im_devvp,
 559 #if 1 // radar 1669467 - logical and physical blocksize are the same
 560                                      ana->iso_ce_blk,
 561 #else
 562                                      ana->iso_ce_blk << (ana->imp->im_bshift - DEV_BSHIFT),
 563 #endif // radar 1669467
 564                                      ana->imp->logical_block_size, NOCRED, &bp))
 565                                 /* what to do now? */
 566                                 break;
 567                         phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
 568                         pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
 569                 } else
 570                         break;
 571         }
 572         if (bp)
 573                 brelse(bp);
 574         /*
 575          * If we don't find the Basic SUSP stuffs, just set default value
 576          *   (attribute/time stamp)
 577          */
 578         for (ptable = table; ptable->func2; ptable++)
 579                 if (!(ptable->result&result))
 580                         ptable->func2(isodir,ana);
 581
 582         return result;
 583 }
 584
 585 /*
 586  * Get Attributes.
 587  */
 588 static RRIP_TABLE rrip_table_analyze[] = {
 589         { "PX", cd9660_rrip_attr,       cd9660_rrip_defattr,    ISO_SUSP_ATTR },
 590         { "TF", cd9660_rrip_tstamp,     cd9660_rrip_deftstamp,  ISO_SUSP_TSTAMP },
 591         { "PN", cd9660_rrip_device,     0,                      ISO_SUSP_DEVICE },
 592         { "RR", cd9660_rrip_idflag,     0,                      ISO_SUSP_IDFLAG },
 593         { "CE", cd9660_rrip_cont,       0,                      ISO_SUSP_CONT },
 594         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 595         { "",   0,                      0,                      0 }
 596 };
 597
 598 int
 599 cd9660_rrip_analyze(isodir,inop,imp)
 600         struct iso_directory_record *isodir;
 601         struct iso_node *inop;
 602         struct iso_mnt *imp;
 603 {
 604         ISO_RRIP_ANALYZE analyze;
 605
 606         analyze.inop = inop;
 607         analyze.imp = imp;
 608         analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
 609
 610         return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
 611 }
 612
 613 /*
 614  * Get Alternate Name.
 615  */
 616 static RRIP_TABLE rrip_table_getname[] = {
 617         { "NM", cd9660_rrip_altname,    cd9660_rrip_defname,    ISO_SUSP_ALTNAME },
 618         { "CL", cd9660_rrip_pclink,     0,                      ISO_SUSP_CLINK|ISO_SUSP_PLINK },
 619         { "PL", cd9660_rrip_pclink,     0,                      ISO_SUSP_CLINK|ISO_SUSP_PLINK },
 620         { "RE", cd9660_rrip_reldir,     0,                      ISO_SUSP_RELDIR },
 621         { "RR", cd9660_rrip_idflag,     0,                      ISO_SUSP_IDFLAG },
 622         { "CE", cd9660_rrip_cont,       0,                      ISO_SUSP_CONT },
 623         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 624         { "",   0,                      0,                      0 }
 625 };
 626
 627 int
 628 cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
 629         struct iso_directory_record *isodir;
 630         char *outbuf;
 631         u_short *outlen;
 632         ino_t *inump;
 633         struct iso_mnt *imp;
 634 {
 635         ISO_RRIP_ANALYZE analyze;
 636         RRIP_TABLE *tab;
 637
 638         analyze.outbuf = outbuf;
 639         analyze.outlen = outlen;
 640         analyze.maxlen = ISO_RRIP_NAMEMAX;
 641         analyze.inump = inump;
 642         analyze.imp = imp;
 643         analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
 644         *outlen = 0;
 645
 646         tab = rrip_table_getname;
 647         if (*isodir->name == 0
 648             || *isodir->name == 1) {
 649                 cd9660_rrip_defname(isodir,&analyze);
 650
 651                 analyze.fields &= ~ISO_SUSP_ALTNAME;
 652                 tab++;
 653         }
 654
 655         return cd9660_rrip_loop(isodir,&analyze,tab);
 656 }
 657
 658 /*
 659  * Get Symbolic Link.
 660  */
 661 static RRIP_TABLE rrip_table_getsymname[] = {
 662         { "SL", cd9660_rrip_slink,      0,                      ISO_SUSP_SLINK },
 663         { "RR", cd9660_rrip_idflag,     0,                      ISO_SUSP_IDFLAG },
 664         { "CE", cd9660_rrip_cont,       0,                      ISO_SUSP_CONT },
 665         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 666         { "",   0,                      0,                      0 }
 667 };
 668
 669 int
 670 cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
 671         struct iso_directory_record *isodir;
 672         char *outbuf;
 673         u_short *outlen;
 674         struct iso_mnt *imp;
 675 {
 676         ISO_RRIP_ANALYZE analyze;
 677
 678         analyze.outbuf = outbuf;
 679         analyze.outlen = outlen;
 680         *outlen = 0;
 681         analyze.maxlen = MAXPATHLEN;
 682         analyze.cont = 1;               /* don't start with a slash */
 683         analyze.imp = imp;
 684         analyze.fields = ISO_SUSP_SLINK;
 685
 686         return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
 687 }
 688
 689 static RRIP_TABLE rrip_table_extref[] = {
 690         { "ER", cd9660_rrip_extref,     0,                      ISO_SUSP_EXTREF },
 691         { "CE", cd9660_rrip_cont,       0,                      ISO_SUSP_CONT },
 692         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 693         { "",   0,                      0,                      0 }
 694 };
 695
 696 /*
 697  * Check for Rock Ridge Extension and return offset of its fields.
 698  * Note: We insist on the ER field.
 699  */
 700 int
 701 cd9660_rrip_offset(isodir,imp)
 702         struct iso_directory_record *isodir;
 703         struct iso_mnt *imp;
 704 {
 705         ISO_RRIP_OFFSET *p;
 706         ISO_RRIP_ANALYZE analyze;
 707
 708         imp->rr_skip0 = 0;
 709         p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
 710         if (bcmp(p,"SP\7\1\276\357",6)) {
 711                 /* Maybe, it's a CDROM XA disc? */
 712                 imp->rr_skip0 = 15;
 713                 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
 714                 if (bcmp(p,"SP\7\1\276\357",6))
 715                         return -1;
 716         }
 717
 718         analyze.imp = imp;
 719         analyze.fields = ISO_SUSP_EXTREF;
 720         if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
 721                 return -1;
 722
 723         return isonum_711(p->skip);
 724 }