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  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*      $NetBSD: cd9660_rrip.c,v 1.11 1994/12/24 15:30:10 cgd Exp $     */
  23
  24 /*-
  25  * Copyright (c) 1993, 1994
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * This code is derived from software contributed to Berkeley
  29  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
  30  * Support code is derived from software contributed to Berkeley
  31  * by Atsushi Murai (amurai@spec.co.jp).
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)cd9660_rrip.c       8.6 (Berkeley) 12/5/94
  62
  63
  64
  65  * HISTORY
  66  * 22-Jan-98    radar 1669467 - ISO 9660 CD support - jwc
  67
  68  */
  69
  70 #include <sys/param.h>
  71 #include <sys/systm.h>
  72 #include <sys/vnode.h>
  73 #include <sys/mount.h>
  74 #include <sys/namei.h>
  75 #include <sys/buf.h>
  76 #include <sys/file.h>
  77 #include <sys/kernel.h>
  78 #include <sys/stat.h>
  79 #include <sys/types.h>
  80
  81 #include <sys/time.h>
  82
  83 #include <isofs/cd9660/iso.h>
  84 #include <isofs/cd9660/cd9660_node.h>
  85 #include <isofs/cd9660/cd9660_rrip.h>
  86 #include <isofs/cd9660/iso_rrip.h>
  87
  88 /*
  89  * POSIX file attribute
  90  */
  91 static int
  92 cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana)
  93 {
  94         ana->inop->inode.iso_mode = isonum_733(p->mode);
  95         ana->inop->inode.iso_uid = isonum_733(p->uid);
  96         ana->inop->inode.iso_gid = isonum_733(p->gid);
  97         ana->inop->inode.iso_links = isonum_733(p->links);
  98         ana->fields &= ~ISO_SUSP_ATTR;
  99         return ISO_SUSP_ATTR;
 100 }
 101
 102 static void
 103 cd9660_rrip_defattr(struct iso_directory_record *isodir, 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);
 108 }
 109
 110 /*
 111  * Symbolic Links
 112  */
 113 static int
 114 cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana)
 115 {
 116         register ISO_RRIP_SLINK_COMPONENT *pcomp;
 117         register ISO_RRIP_SLINK_COMPONENT *pcompe;
 118         int len, wlen, cont;
 119         char *outbuf, *inbuf;
 120
 121         pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
 122         pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
 123         len = *ana->outlen;
 124         outbuf = ana->outbuf;
 125         cont = ana->cont;
 126
 127         /*
 128          * Gathering a Symbolic name from each component with path
 129          */
 130         for (;
 131              pcomp < pcompe;
 132              pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
 133                                                   + isonum_711(pcomp->clen))) {
 134
 135                 if (!cont) {
 136                         if (len < ana->maxlen) {
 137                                 len++;
 138                                 *outbuf++ = '/';
 139                         }
 140                 }
 141                 cont = 0;
 142
 143                 inbuf = "..";
 144                 wlen = 0;
 145
 146                 switch (*pcomp->cflag) {
 147
 148                 case ISO_SUSP_CFLAG_CURRENT:
 149                         /* Inserting Current */
 150                         wlen = 1;
 151                         break;
 152
 153                 case ISO_SUSP_CFLAG_PARENT:
 154                         /* Inserting Parent */
 155                         wlen = 2;
 156                         break;
 157
 158                 case ISO_SUSP_CFLAG_ROOT:
 159                         /* Inserting slash for ROOT */
 160                         /* start over from beginning(?) */
 161                         outbuf -= len;
 162                         len = 0;
 163                         break;
 164
 165                 case ISO_SUSP_CFLAG_VOLROOT:
 166                         /* Inserting a mount point i.e. "/cdrom" */
 167                         /* same as above */
 168                         outbuf -= len;
 169                         len = 0;
 170                         inbuf = &(vfs_statfs(ana->imp->im_mountp)->f_mntonname);
 171                         wlen = strlen(inbuf);
 172                         break;
 173
 174                 case ISO_SUSP_CFLAG_HOST:
 175                         /* Inserting hostname i.e. "kurt.tools.de" */
 176                         inbuf = hostname;
 177                         wlen = hostnamelen;
 178                         break;
 179
 180                 case ISO_SUSP_CFLAG_CONTINUE:
 181                         cont = 1;
 182                         /* fall thru */
 183                 case 0:
 184                         /* Inserting component */
 185                         wlen = isonum_711(pcomp->clen);
 186                         inbuf = pcomp->name;
 187                         break;
 188                 default:
 189                         printf("RRIP with incorrect flags?");
 190                         wlen = ana->maxlen + 1;
 191                         break;
 192                 }
 193
 194                 if (len + wlen > ana->maxlen) {
 195                         /* indicate error to caller */
 196                         ana->cont = 1;
 197                         ana->fields = 0;
 198                         ana->outbuf -= *ana->outlen;
 199                         *ana->outlen = 0;
 200                         return 0;
 201                 }
 202
 203                 bcopy(inbuf,outbuf,wlen);
 204                 outbuf += wlen;
 205                 len += wlen;
 206
 207         }
 208         ana->outbuf = outbuf;
 209         *ana->outlen = len;
 210         ana->cont = cont;
 211
 212         if (!isonum_711(p->flags)) {
 213                 ana->fields &= ~ISO_SUSP_SLINK;
 214                 return ISO_SUSP_SLINK;
 215         }
 216         return 0;
 217 }
 218
 219 /*
 220  * Alternate name
 221  */
 222 static int
 223 cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana)
 224 {
 225         char *inbuf;
 226         int wlen;
 227         int cont;
 228
 229         inbuf = "..";
 230         wlen = 0;
 231         cont = 0;
 232
 233         switch (*p->flags) {
 234         case ISO_SUSP_CFLAG_CURRENT:
 235                 /* Inserting Current */
 236                 wlen = 1;
 237                 break;
 238
 239         case ISO_SUSP_CFLAG_PARENT:
 240                 /* Inserting Parent */
 241                 wlen = 2;
 242                 break;
 243
 244         case ISO_SUSP_CFLAG_HOST:
 245                 /* Inserting hostname i.e. "kurt.tools.de" */
 246                 inbuf = hostname;
 247                 wlen = hostnamelen;
 248                 break;
 249
 250         case ISO_SUSP_CFLAG_CONTINUE:
 251                 cont = 1;
 252                 /* fall thru */
 253         case 0:
 254                 /* Inserting component */
 255                 wlen = isonum_711(p->h.length) - 5;
 256                 inbuf = (char *)p + 5;
 257                 break;
 258
 259         default:
 260                 printf("RRIP with incorrect NM flags?\n");
 261                 wlen = ana->maxlen + 1;
 262                 break;
 263         }
 264
 265         if ((*ana->outlen += wlen) > ana->maxlen) {
 266                 /* treat as no name field */
 267                 ana->fields &= ~ISO_SUSP_ALTNAME;
 268                 ana->outbuf -= *ana->outlen - wlen;
 269                 *ana->outlen = 0;
 270                 return 0;
 271         }
 272
 273         bcopy(inbuf,ana->outbuf,wlen);
 274         ana->outbuf += wlen;
 275
 276         if (!cont) {
 277                 ana->fields &= ~ISO_SUSP_ALTNAME;
 278                 return ISO_SUSP_ALTNAME;
 279         }
 280         return 0;
 281 }
 282
 283 static void
 284 cd9660_rrip_defname(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
 285 {
 286         strcpy(ana->outbuf,"..");
 287         switch (*isodir->name) {
 288         default:
 289                 isofntrans(isodir->name, isonum_711(isodir->name_len),
 290                            ana->outbuf, ana->outlen, 1,
 291                            isonum_711(isodir->flags) & associatedBit);
 292                 break;
 293         case 0:
 294                 *ana->outlen = 1;
 295                 break;
 296         case 1:
 297                 *ana->outlen = 2;
 298                 break;
 299         }
 300 }
 301
 302 /*
 303  * Parent or Child Link
 304  */
 305 static int
 306 cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana)
 307 {
 308         *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
 309         ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
 310         return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
 311 }
 312
 313 /*
 314  * Relocated directory
 315  */
 316 /* ARGSUSED */
 317 static int
 318 cd9660_rrip_reldir(__unused ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana)
 319 {
 320         /* special hack to make caller aware of RE field */
 321         *ana->outlen = 0;
 322         ana->fields = 0;
 323         return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
 324 }
 325
 326 static int
 327 cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana)
 328 {
 329         u_char *ptime;
 330
 331         ptime = p->time;
 332
 333         /* Check a format of time stamp (7bytes/17bytes) */
 334         if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
 335                 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
 336                         ptime += 7;
 337
 338                 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
 339                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime);
 340                         ptime += 7;
 341                 } else
 342                         bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
 343
 344                 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
 345                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime);
 346                         ptime += 7;
 347                 } else
 348                         ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
 349
 350                 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
 351                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime);
 352                 else
 353                         ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
 354
 355         } else {
 356                 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
 357                         ptime += 17;
 358
 359                 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
 360                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
 361                         ptime += 17;
 362                 } else
 363                         bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
 364
 365                 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
 366                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
 367                         ptime += 17;
 368                 } else
 369                         ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
 370
 371                 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
 372                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
 373                 else
 374                         ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
 375
 376         }
 377         ana->fields &= ~ISO_SUSP_TSTAMP;
 378         return ISO_SUSP_TSTAMP;
 379 }
 380
 381 static void
 382 cd9660_rrip_deftstamp(struct iso_directory_record *isodir,
 383                         ISO_RRIP_ANALYZE *ana)
 384 {
 385         cd9660_deftstamp(isodir,ana->inop,NULL);
 386 }
 387
 388 /*
 389  * POSIX device modes
 390  */
 391 static int
 392 cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana)
 393 {
 394         u_int high, low;
 395
 396         high = isonum_733(p->dev_t_high);
 397         low  = isonum_733(p->dev_t_low);
 398
 399         if (high == 0)
 400                 ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
 401         else
 402                 ana->inop->inode.iso_rdev = makedev(high, minor(low));
 403         ana->fields &= ~ISO_SUSP_DEVICE;
 404         return ISO_SUSP_DEVICE;
 405 }
 406
 407 /*
 408  * Flag indicating
 409  */
 410 static int
 411 cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana)
 412 {
 413         ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
 414         /* special handling of RE field */
 415         if (ana->fields&ISO_SUSP_RELDIR)
 416                 return cd9660_rrip_reldir(p,ana);
 417
 418         return ISO_SUSP_IDFLAG;
 419 }
 420
 421 /*
 422  * Continuation pointer
 423  */
 424 static int
 425 cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana)
 426 {
 427         ana->iso_ce_blk = isonum_733(p->location);
 428         ana->iso_ce_off = isonum_733(p->offset);
 429         ana->iso_ce_len = isonum_733(p->length);
 430         return ISO_SUSP_CONT;
 431 }
 432
 433 /*
 434  * System Use end
 435  */
 436 /* ARGSUSED */
 437 static int
 438 cd9660_rrip_stop(__unused ISO_SUSP_HEADER *p, __unused ISO_RRIP_ANALYZE *ana)
 439 {
 440         return ISO_SUSP_STOP;
 441 }
 442
 443 /*
 444  * Extension reference
 445  */
 446 static int
 447 cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana)
 448 {
 449         if (isonum_711(p->len_id) != 10
 450             || bcmp((char *)p + 8,"RRIP_1991A",10)
 451             || isonum_711(p->version) != 1)
 452                 return 0;
 453         ana->fields &= ~ISO_SUSP_EXTREF;
 454         return ISO_SUSP_EXTREF;
 455 }
 456
 457 typedef int (*rrip_table_func)(ISO_SUSP_HEADER *phead, ISO_RRIP_ANALYZE *ana);
 458 typedef int (*rrip_table_func2)(struct iso_directory_record *isodir,
 459                               ISO_RRIP_ANALYZE *ana);
 460 typedef struct {
 461         char type[2];
 462         rrip_table_func func;
 463         rrip_table_func2 func2;
 464         int result;
 465 } RRIP_TABLE;
 466
 467 static int
 468 cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana,
 469                 RRIP_TABLE *table)
 470 {
 471         register RRIP_TABLE *ptable;
 472         register ISO_SUSP_HEADER *phead;
 473         register ISO_SUSP_HEADER *pend;
 474         struct buf *bp = NULL;
 475         char *pwhead;
 476         int result;
 477
 478         /*
 479          * Note: If name length is odd,
 480          *       it will be padding 1 byte  after the name
 481          */
 482         pwhead = isodir->name + isonum_711(isodir->name_len);
 483         if (!(isonum_711(isodir->name_len)&1))
 484                 pwhead++;
 485
 486         /* If it's not the '.' entry of the root dir obey SP field */
 487         if (*isodir->name != 0
 488             || isonum_733(isodir->extent) != ana->imp->root_extent)
 489                 pwhead += ana->imp->rr_skip;
 490         else
 491                 pwhead += ana->imp->rr_skip0;
 492
 493         phead = (ISO_SUSP_HEADER *)pwhead;
 494         pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
 495
 496         result = 0;
 497         while (1) {
 498                 ana->iso_ce_len = 0;
 499                 /*
 500                  * Note: "pend" should be more than one SUSP header
 501                  */
 502                 while (pend >= phead + 1) {
 503                         if (isonum_711(phead->version) == 1) {
 504                                 for (ptable = table; ptable->func; ptable++) {
 505                                         if (*phead->type == *ptable->type
 506                                             && phead->type[1] == ptable->type[1]) {
 507                                                 result |= (ptable->func(phead,ana));
 508                                                 break;
 509                                         }
 510                                 }
 511                                 if (!ana->fields)
 512                                         break;
 513                         }
 514                         if (result&ISO_SUSP_STOP) {
 515                                 result &= ~ISO_SUSP_STOP;
 516                                 break;
 517                         }
 518                         /* plausibility check */
 519                         if (isonum_711(phead->length) < sizeof(*phead))
 520                                 break;
 521                         /*
 522                          * move to next SUSP
 523                          * Hopefully this works with newer versions, too
 524                          */
 525                         phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
 526                 }
 527
 528                 if (ana->fields && ana->iso_ce_len) {
 529                         if (ana->iso_ce_blk >= ana->imp->volume_space_size
 530                             || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
 531                             || buf_bread(ana->imp->im_devvp,
 532 #if 1 // radar 1669467 - logical and physical blocksize are the same
 533                                      (daddr64_t)((unsigned)ana->iso_ce_blk),
 534 #else
 535                                      (daddr64_t)((unsigned)(ana->iso_ce_blk << (ana->imp->im_bshift - DEV_BSHIFT))),
 536 #endif // radar 1669467
 537                                      ana->imp->logical_block_size, NOCRED, &bp))
 538                                 /* what to do now? */
 539                                 break;
 540                         phead = (ISO_SUSP_HEADER *)((char *)buf_dataptr(bp) + ana->iso_ce_off);
 541                         pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
 542                 } else
 543                         break;
 544         }
 545         if (bp)
 546                 buf_brelse(bp);
 547         /*
 548          * If we don't find the Basic SUSP stuffs, just set default value
 549          *   (attribute/time stamp)
 550          */
 551         for (ptable = table; ptable->func2; ptable++)
 552                 if (!(ptable->result&result))
 553                         ptable->func2(isodir,ana);
 554
 555         return result;
 556 }
 557
 558 /*
 559  * Get Attributes.
 560  */
 561 static RRIP_TABLE rrip_table_analyze[] = {
 562         { "PX", (rrip_table_func)cd9660_rrip_attr,
 563                                         (rrip_table_func2)cd9660_rrip_defattr,
 564                                                                 ISO_SUSP_ATTR },
 565         { "TF", (rrip_table_func)cd9660_rrip_tstamp,
 566                                         (rrip_table_func2)cd9660_rrip_deftstamp,
 567                                                                 ISO_SUSP_TSTAMP },
 568         { "PN", (rrip_table_func)cd9660_rrip_device,
 569                                         0,                      ISO_SUSP_DEVICE },
 570         { "RR", (rrip_table_func)cd9660_rrip_idflag,
 571                                         0,                      ISO_SUSP_IDFLAG },
 572         { "CE", (rrip_table_func)cd9660_rrip_cont,
 573                                         0,                      ISO_SUSP_CONT },
 574         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 575         { "",   0,                      0,                      0 }
 576 };
 577
 578 int
 579 cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop,
 580                         struct iso_mnt *imp)
 581 {
 582         ISO_RRIP_ANALYZE analyze;
 583
 584         analyze.inop = inop;
 585         analyze.imp = imp;
 586         analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
 587
 588         return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
 589 }
 590
 591 /*
 592  * Get Alternate Name.
 593  */
 594 static RRIP_TABLE rrip_table_getname[] = {
 595         { "NM", (rrip_table_func)cd9660_rrip_altname,
 596                                         (rrip_table_func2)cd9660_rrip_defname,
 597                                                                 ISO_SUSP_ALTNAME },
 598         { "CL", (rrip_table_func)cd9660_rrip_pclink,
 599                                         0,                      ISO_SUSP_CLINK|ISO_SUSP_PLINK },
 600         { "PL", (rrip_table_func)cd9660_rrip_pclink,
 601                                         0,                      ISO_SUSP_CLINK|ISO_SUSP_PLINK },
 602         { "RE", (rrip_table_func)cd9660_rrip_reldir,
 603                                         0,                      ISO_SUSP_RELDIR },
 604         { "RR", (rrip_table_func)cd9660_rrip_idflag,
 605                                         0,                      ISO_SUSP_IDFLAG },
 606         { "CE", (rrip_table_func)cd9660_rrip_cont,
 607                                         0,                      ISO_SUSP_CONT },
 608         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 609         { "",   0,                      0,                      0 }
 610 };
 611
 612 int
 613 cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf,
 614                         u_short *outlen, ino_t *inump, struct iso_mnt *imp)
 615 {
 616         ISO_RRIP_ANALYZE analyze;
 617         RRIP_TABLE *tab;
 618
 619         analyze.outbuf = outbuf;
 620         analyze.outlen = outlen;
 621         analyze.maxlen = ISO_RRIP_NAMEMAX;
 622         analyze.inump = inump;
 623         analyze.imp = imp;
 624         analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
 625         *outlen = 0;
 626
 627         tab = rrip_table_getname;
 628         if (*isodir->name == 0
 629             || *isodir->name == 1) {
 630                 cd9660_rrip_defname(isodir,&analyze);
 631
 632                 analyze.fields &= ~ISO_SUSP_ALTNAME;
 633                 tab++;
 634         }
 635
 636         return cd9660_rrip_loop(isodir,&analyze,tab);
 637 }
 638
 639 /*
 640  * Get Symbolic Link.
 641  */
 642 static RRIP_TABLE rrip_table_getsymname[] = {
 643         { "SL", (rrip_table_func)cd9660_rrip_slink,
 644                                         0,                      ISO_SUSP_SLINK },
 645         { "RR", (rrip_table_func)cd9660_rrip_idflag,
 646                                         0,                      ISO_SUSP_IDFLAG },
 647         { "CE", (rrip_table_func)cd9660_rrip_cont,
 648                                         0,                      ISO_SUSP_CONT },
 649         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 650         { "",   0,                      0,                      0 }
 651 };
 652
 653 int
 654 cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf,
 655                         u_short *outlen, struct iso_mnt *imp)
 656 {
 657         ISO_RRIP_ANALYZE analyze;
 658
 659         analyze.outbuf = outbuf;
 660         analyze.outlen = outlen;
 661         *outlen = 0;
 662         analyze.maxlen = MAXPATHLEN;
 663         analyze.cont = 1;               /* don't start with a slash */
 664         analyze.imp = imp;
 665         analyze.fields = ISO_SUSP_SLINK;
 666
 667         return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
 668 }
 669
 670 static RRIP_TABLE rrip_table_extref[] = {
 671         { "ER", (rrip_table_func)cd9660_rrip_extref,
 672                                         0,                      ISO_SUSP_EXTREF },
 673         { "CE", (rrip_table_func)cd9660_rrip_cont,
 674                                         0,                      ISO_SUSP_CONT },
 675         { "ST", cd9660_rrip_stop,       0,                      ISO_SUSP_STOP },
 676         { "",   0,                      0,                      0 }
 677 };
 678
 679 /*
 680  * Check for Rock Ridge Extension and return offset of its fields.
 681  * Note: We insist on the ER field.
 682  */
 683 int
 684 cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp)
 685 {
 686         ISO_RRIP_OFFSET *p;
 687         ISO_RRIP_ANALYZE analyze;
 688
 689         imp->rr_skip0 = 0;
 690         p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
 691         if (bcmp(p,"SP\7\1\276\357",6)) {
 692                 /* Maybe, it's a CDROM XA disc? */
 693                 imp->rr_skip0 = 15;
 694                 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
 695                 if (bcmp(p,"SP\7\1\276\357",6))
 696                         return -1;
 697         }
 698
 699         analyze.imp = imp;
 700         analyze.fields = ISO_SUSP_EXTREF;
 701         if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
 702                 return -1;
 703
 704         return isonum_711(p->skip);
 705 }