sys/vfs/isofs/cd9660/cd9660_rrip.c

   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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)cd9660_rrip.c       8.6 (Berkeley) 12/5/94
  35  * $FreeBSD: src/sys/isofs/cd9660/cd9660_rrip.c,v 1.17 1999/08/28 00:46:06 peter Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/buf.h>
  41 #include <sys/vnode.h>
  42 #include <sys/mount.h>
  43 #include <sys/kernel.h>
  44
  45 #include "iso.h"
  46 #include "cd9660_node.h"
  47 #include "cd9660_rrip.h"
  48 #include "iso_rrip.h"
  49
  50 #include <sys/buf2.h>
  51
  52 typedef int     rrt_func_t(void *, ISO_RRIP_ANALYZE *ana);
  53
  54 typedef struct {
  55         char type[2];
  56         rrt_func_t *func;
  57         void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana);
  58         int result;
  59 } RRIP_TABLE;
  60
  61 static int      cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana);
  62 static int      cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana);
  63 static int      cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana);
  64 static void     cd9660_rrip_defattr(struct iso_directory_record *isodir,
  65                     ISO_RRIP_ANALYZE *ana);
  66 static void     cd9660_rrip_defname(struct iso_directory_record *isodir,
  67                     ISO_RRIP_ANALYZE *ana);
  68 static void     cd9660_rrip_deftstamp(struct iso_directory_record *isodir,
  69                     ISO_RRIP_ANALYZE *ana);
  70 static int      cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana);
  71 static int      cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana);
  72 static int      cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana);
  73 static int      cd9660_rrip_loop(struct iso_directory_record *isodir,
  74                     ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table);
  75 static int      cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana);
  76 static int      cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana);
  77 static int      cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana);
  78 static int      cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana);
  79 static int      cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana);
  80
  81 /*
  82  * POSIX file attribute
  83  */
  84 static int
  85 cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana)
  86 {
  87         ana->inop->inode.iso_mode = isonum_733(p->mode);
  88         ana->inop->inode.iso_uid = isonum_733(p->uid);
  89         ana->inop->inode.iso_gid = isonum_733(p->gid);
  90         ana->inop->inode.iso_links = isonum_733(p->links);
  91         ana->fields &= ~ISO_SUSP_ATTR;
  92         return ISO_SUSP_ATTR;
  93 }
  94
  95 static void
  96 cd9660_rrip_defattr(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
  97 {
  98         /* But this is a required field! */
  99         kprintf("RRIP without PX field?\n");
 100         cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
 101 }
 102
 103 /*
 104  * Symbolic Links
 105  */
 106 static int
 107 cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana)
 108 {
 109         ISO_RRIP_SLINK_COMPONENT *pcomp;
 110         ISO_RRIP_SLINK_COMPONENT *pcompe;
 111         int error, len, wlen, cont;
 112         char *outbuf, *inbuf, *freebuf;
 113
 114         pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
 115         pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
 116         len = *ana->outlen;
 117         outbuf = ana->outbuf;
 118         cont = ana->cont;
 119         freebuf = NULL;
 120
 121         /*
 122          * Gathering a Symbolic name from each component with path
 123          */
 124         for (;
 125              pcomp < pcompe;
 126              pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
 127                                                   + isonum_711(pcomp->clen))) {
 128
 129                 if (!cont) {
 130                         if (len < ana->maxlen) {
 131                                 len++;
 132                                 *outbuf++ = '/';
 133                         }
 134                 }
 135                 cont = 0;
 136
 137                 inbuf = "..";
 138                 wlen = 0;
 139
 140                 switch (*pcomp->cflag) {
 141
 142                 case ISO_SUSP_CFLAG_CURRENT:
 143                         /* Inserting Current */
 144                         wlen = 1;
 145                         break;
 146
 147                 case ISO_SUSP_CFLAG_PARENT:
 148                         /* Inserting Parent */
 149                         wlen = 2;
 150                         break;
 151
 152                 case ISO_SUSP_CFLAG_ROOT:
 153                         /* Inserting slash for ROOT */
 154                         /* start over from beginning(?) */
 155                         outbuf -= len;
 156                         len = 0;
 157                         break;
 158
 159                 case ISO_SUSP_CFLAG_VOLROOT:
 160                         /* Inserting a mount point i.e. "/cdrom" */
 161                         /* same as above */
 162                         outbuf -= len;
 163                         len = 0;
 164                         error = cache_fullpath(NULL, &ana->imp->im_mountp->mnt_ncmountpt, NULL,
 165                                                &inbuf, &freebuf, 0);
 166                         if (error)
 167                                 goto bad;
 168                         wlen = strlen(inbuf);
 169                         break;
 170
 171                 case ISO_SUSP_CFLAG_HOST:
 172                         /* Inserting hostname i.e. "kurt.tools.de" */
 173                         inbuf = hostname;
 174                         wlen = strlen(hostname);
 175                         break;
 176
 177                 case ISO_SUSP_CFLAG_CONTINUE:
 178                         cont = 1;
 179                         /* FALLTHROUGH */
 180                 case 0:
 181                         /* Inserting component */
 182                         wlen = isonum_711(pcomp->clen);
 183                         inbuf = pcomp->name;
 184                         break;
 185                 default:
 186                         kprintf("RRIP with incorrect flags?");
 187                         wlen = ana->maxlen + 1;
 188                         break;
 189                 }
 190
 191                 if (len + wlen > ana->maxlen)
 192                         goto bad;
 193
 194                 bcopy(inbuf,outbuf,wlen);
 195                 outbuf += wlen;
 196                 len += wlen;
 197
 198                 if (freebuf != NULL) {
 199                         kfree(freebuf, M_TEMP);
 200                         freebuf = NULL;
 201                 }
 202         }
 203         ana->outbuf = outbuf;
 204         *ana->outlen = len;
 205         ana->cont = cont;
 206
 207         if (!isonum_711(p->flags)) {
 208                 ana->fields &= ~ISO_SUSP_SLINK;
 209                 return ISO_SUSP_SLINK;
 210         }
 211         return 0;
 212
 213 bad:
 214         if (freebuf != NULL)
 215                 kfree(freebuf, M_TEMP);
 216         ana->cont = 1;
 217         ana->fields = 0;
 218         ana->outbuf -= *ana->outlen;
 219         *ana->outlen = 0;
 220         return 0;
 221 }
 222
 223 /*
 224  * Alternate name
 225  */
 226 static int
 227 cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, 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                 /* FALLTHROUGH */
 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                 kprintf("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
 287 static void
 288 cd9660_rrip_defname(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
 289 {
 290         isofntrans(isodir->name,isonum_711(isodir->name_len),
 291                    ana->outbuf,ana->outlen,
 292                    1,isonum_711(isodir->flags)&4, ana->imp->joliet_level,
 293                    ana->imp->im_flags, ana->imp->im_d2l);
 294         switch (*ana->outbuf) {
 295         default:
 296                 break;
 297         case 1:
 298                 *ana->outlen = 2;
 299                 /* FALLTHROUGH */
 300         case 0:
 301                 /* outlen is 1 already */
 302                 strcpy(ana->outbuf,"..");
 303                 break;
 304         }
 305 }
 306
 307 /*
 308  * Parent or Child Link
 309  */
 310 static int
 311 cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana)
 312 {
 313         *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
 314         ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
 315         return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
 316 }
 317
 318 /*
 319  * Relocated directory
 320  */
 321 static int
 322 cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana)
 323 {
 324         /* special hack to make caller aware of RE field */
 325         *ana->outlen = 0;
 326         ana->fields = 0;
 327         return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
 328 }
 329
 330 static int
 331 cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana)
 332 {
 333         u_char *ptime;
 334
 335         ptime = p->time;
 336
 337         /* Check a format of time stamp (7bytes/17bytes) */
 338         if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
 339                 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
 340                         ptime += 7;
 341
 342                 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
 343                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
 344                                             ISO_FTYPE_RRIP);
 345                         ptime += 7;
 346                 } else
 347                         bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
 348
 349                 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
 350                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
 351                                             ISO_FTYPE_RRIP);
 352                         ptime += 7;
 353                 } else
 354                         ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
 355
 356                 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
 357                         cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
 358                                             ISO_FTYPE_RRIP);
 359                 else
 360                         ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
 361
 362         } else {
 363                 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
 364                         ptime += 17;
 365
 366                 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
 367                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
 368                         ptime += 17;
 369                 } else
 370                         bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
 371
 372                 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
 373                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
 374                         ptime += 17;
 375                 } else
 376                         ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
 377
 378                 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
 379                         cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
 380                 else
 381                         ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
 382
 383         }
 384         ana->fields &= ~ISO_SUSP_TSTAMP;
 385         return ISO_SUSP_TSTAMP;
 386 }
 387
 388 static void
 389 cd9660_rrip_deftstamp(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
 390 {
 391         cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
 392 }
 393
 394 /*
 395  * POSIX device modes
 396  */
 397 static int
 398 cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana)
 399 {
 400         u_int high, low;
 401
 402         high = isonum_733(p->dev_t_high);
 403         low  = isonum_733(p->dev_t_low);
 404
 405         if (high == 0)
 406                 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low));
 407         else
 408                 ana->inop->inode.iso_rdev = makeudev(high, uminor(low));
 409         ana->fields &= ~ISO_SUSP_DEVICE;
 410         return ISO_SUSP_DEVICE;
 411 }
 412
 413 /*
 414  * Flag indicating
 415  */
 416 static int
 417 cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana)
 418 {
 419         ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
 420         /* special handling of RE field */
 421         if (ana->fields&ISO_SUSP_RELDIR)
 422                 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
 423
 424         return ISO_SUSP_IDFLAG;
 425 }
 426
 427 /*
 428  * Continuation pointer
 429  */
 430 static int
 431 cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana)
 432 {
 433         ana->iso_ce_blk = isonum_733(p->location);
 434         ana->iso_ce_off = isonum_733(p->offset);
 435         ana->iso_ce_len = isonum_733(p->length);
 436         return ISO_SUSP_CONT;
 437 }
 438
 439 /*
 440  * System Use end
 441  */
 442 static int
 443 cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana)
 444 {
 445         return ISO_SUSP_STOP;
 446 }
 447
 448 /*
 449  * Extension reference
 450  */
 451 static int
 452 cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana)
 453 {
 454         if (isonum_711(p->len_id) != 10
 455             || bcmp((char *)p + 8,"RRIP_1991A",10)
 456             || isonum_711(p->version) != 1)
 457                 return 0;
 458         ana->fields &= ~ISO_SUSP_EXTREF;
 459         return ISO_SUSP_EXTREF;
 460 }
 461
 462 static int
 463 cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana,
 464                  RRIP_TABLE *table)
 465 {
 466         RRIP_TABLE *ptable;
 467         ISO_SUSP_HEADER *phead;
 468         ISO_SUSP_HEADER *pend;
 469         struct buf *bp = NULL;
 470         char *pwhead;
 471         u_short c;
 472         int result;
 473
 474         /*
 475          * Note: If name length is odd,
 476          *       it will be padding 1 byte after the name
 477          */
 478         pwhead = isodir->name + isonum_711(isodir->name_len);
 479         if (!(isonum_711(isodir->name_len)&1))
 480                 pwhead++;
 481         isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
 482                 ana->imp->im_flags, ana->imp->im_d2l);
 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                                      lblktooff(ana->imp, ana->iso_ce_blk),
 530                                      ana->imp->logical_block_size, &bp))
 531                                 /* what to do now? */
 532                                 break;
 533                         phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
 534                         pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
 535                 } else
 536                         break;
 537         }
 538         if (bp)
 539                 brelse(bp);
 540         /*
 541          * If we don't find the Basic SUSP stuffs, just set default value
 542          *   (attribute/time stamp)
 543          */
 544         for (ptable = table; ptable->func2; ptable++)
 545                 if (!(ptable->result&result))
 546                         ptable->func2(isodir,ana);
 547
 548         return result;
 549 }
 550
 551 /*
 552  * Get Attributes.
 553  */
 554 /*
 555  * XXX the casts are bogus but will do for now.
 556  */
 557 #define BC      (rrt_func_t *)
 558 static RRIP_TABLE rrip_table_analyze[] = {
 559         { "PX", BC cd9660_rrip_attr,    cd9660_rrip_defattr,    ISO_SUSP_ATTR },
 560         { "TF", BC cd9660_rrip_tstamp,  cd9660_rrip_deftstamp,  ISO_SUSP_TSTAMP },
 561         { "PN", BC cd9660_rrip_device,  0,                      ISO_SUSP_DEVICE },
 562         { "RR", BC cd9660_rrip_idflag,  0,                      ISO_SUSP_IDFLAG },
 563         { "CE", BC cd9660_rrip_cont,    0,                      ISO_SUSP_CONT },
 564         { "ST", BC cd9660_rrip_stop,    0,                      ISO_SUSP_STOP },
 565         { "",   0,                      0,                      0 }
 566 };
 567
 568 int
 569 cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop,
 570                     struct iso_mnt *imp)
 571 {
 572         ISO_RRIP_ANALYZE analyze;
 573
 574         analyze.inop = inop;
 575         analyze.imp = imp;
 576         analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
 577
 578         return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
 579 }
 580
 581 /*
 582  * Get Alternate Name.
 583  */
 584 static RRIP_TABLE rrip_table_getname[] = {
 585         { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname,    ISO_SUSP_ALTNAME },
 586         { "CL", BC cd9660_rrip_pclink,  0,                      ISO_SUSP_CLINK|ISO_SUSP_PLINK },
 587         { "PL", BC cd9660_rrip_pclink,  0,                      ISO_SUSP_CLINK|ISO_SUSP_PLINK },
 588         { "RE", BC cd9660_rrip_reldir,  0,                      ISO_SUSP_RELDIR },
 589         { "RR", BC cd9660_rrip_idflag,  0,                      ISO_SUSP_IDFLAG },
 590         { "CE", BC cd9660_rrip_cont,    0,                      ISO_SUSP_CONT },
 591         { "ST", BC cd9660_rrip_stop,    0,                      ISO_SUSP_STOP },
 592         { "",   0,                      0,                      0 }
 593 };
 594
 595 int
 596 cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf,
 597                     u_short *outlen, ino_t *inump, struct iso_mnt *imp)
 598 {
 599         ISO_RRIP_ANALYZE analyze;
 600         RRIP_TABLE *tab;
 601         u_short c;
 602
 603         analyze.outbuf = outbuf;
 604         analyze.outlen = outlen;
 605         analyze.maxlen = NAME_MAX;
 606         analyze.inump = inump;
 607         analyze.imp = imp;
 608         analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
 609         *outlen = 0;
 610
 611         isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
 612                 imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l);
 613         tab = rrip_table_getname;
 614         if (c == 0 || c == 1) {
 615                 cd9660_rrip_defname(isodir,&analyze);
 616
 617                 analyze.fields &= ~ISO_SUSP_ALTNAME;
 618                 tab++;
 619         }
 620
 621         return cd9660_rrip_loop(isodir,&analyze,tab);
 622 }
 623
 624 /*
 625  * Get Symbolic Link.
 626  */
 627 static RRIP_TABLE rrip_table_getsymname[] = {
 628         { "SL", BC cd9660_rrip_slink,   0,                      ISO_SUSP_SLINK },
 629         { "RR", BC cd9660_rrip_idflag,  0,                      ISO_SUSP_IDFLAG },
 630         { "CE", BC cd9660_rrip_cont,    0,                      ISO_SUSP_CONT },
 631         { "ST", BC cd9660_rrip_stop,    0,                      ISO_SUSP_STOP },
 632         { "",   0,                      0,                      0 }
 633 };
 634
 635 int
 636 cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf,
 637                        u_short *outlen, struct iso_mnt *imp)
 638 {
 639         ISO_RRIP_ANALYZE analyze;
 640
 641         analyze.outbuf = outbuf;
 642         analyze.outlen = outlen;
 643         *outlen = 0;
 644         analyze.maxlen = MAXPATHLEN;
 645         analyze.cont = 1;               /* don't start with a slash */
 646         analyze.imp = imp;
 647         analyze.fields = ISO_SUSP_SLINK;
 648
 649         return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
 650 }
 651
 652 static RRIP_TABLE rrip_table_extref[] = {
 653         { "ER", BC cd9660_rrip_extref,  0,                      ISO_SUSP_EXTREF },
 654         { "CE", BC cd9660_rrip_cont,    0,                      ISO_SUSP_CONT },
 655         { "ST", BC cd9660_rrip_stop,    0,                      ISO_SUSP_STOP },
 656         { "",   0,                      0,                      0 }
 657 };
 658
 659 /*
 660  * Check for Rock Ridge Extension and return offset of its fields.
 661  * Note: We insist on the ER field.
 662  */
 663 int
 664 cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp)
 665 {
 666         ISO_RRIP_OFFSET *p;
 667         ISO_RRIP_ANALYZE analyze;
 668
 669         imp->rr_skip0 = 0;
 670         p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
 671         if (bcmp(p,"SP\7\1\276\357",6)) {
 672                 /* Maybe, it's a CDROM XA disc? */
 673                 imp->rr_skip0 = 15;
 674                 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
 675                 if (bcmp(p,"SP\7\1\276\357",6))
 676                         return -1;
 677         }
 678
 679         analyze.imp = imp;
 680         analyze.fields = ISO_SUSP_EXTREF;
 681         if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
 682                 return -1;
 683
 684         return isonum_711(p->skip);
 685 }