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[dragonfly.git] / sys / vfs / isofs / cd9660 / cd9660_rrip.c
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1/*-
2 * Copyright (c) 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley
6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
7 * Support code is derived from software contributed to Berkeley
8 * by Atsushi Murai (amurai@spec.co.jp).
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
39 * $FreeBSD: src/sys/isofs/cd9660/cd9660_rrip.c,v 1.17 1999/08/28 00:46:06 peter Exp $
3a1b0fdc 40 * $DragonFly: src/sys/vfs/isofs/cd9660/cd9660_rrip.c,v 1.4 2003/07/26 19:27:41 rob Exp $
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41 */
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/buf.h>
46#include <sys/vnode.h>
47#include <sys/mount.h>
48#include <sys/kernel.h>
49
50#include <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 __P((void *, ISO_RRIP_ANALYZE *ana));
56
57typedef struct {
58 char type[2];
59 rrt_func_t *func;
60 void (*func2) __P((struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana));
61 int result;
62} RRIP_TABLE;
63
64static int cd9660_rrip_altname __P((ISO_RRIP_ALTNAME *p,
65 ISO_RRIP_ANALYZE *ana));
66static int cd9660_rrip_attr __P((ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana));
67static int cd9660_rrip_cont __P((ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana));
68static void cd9660_rrip_defattr __P((struct iso_directory_record *isodir,
69 ISO_RRIP_ANALYZE *ana));
70static void cd9660_rrip_defname __P((struct iso_directory_record *isodir,
71 ISO_RRIP_ANALYZE *ana));
72static void cd9660_rrip_deftstamp __P((struct iso_directory_record *isodir,
73 ISO_RRIP_ANALYZE *ana));
74static int cd9660_rrip_device __P((ISO_RRIP_DEVICE *p,
75 ISO_RRIP_ANALYZE *ana));
76static int cd9660_rrip_extref __P((ISO_RRIP_EXTREF *p,
77 ISO_RRIP_ANALYZE *ana));
78static int cd9660_rrip_idflag __P((ISO_RRIP_IDFLAG *p,
79 ISO_RRIP_ANALYZE *ana));
80static int cd9660_rrip_loop __P((struct iso_directory_record *isodir,
81 ISO_RRIP_ANALYZE *ana,
82 RRIP_TABLE *table));
83static int cd9660_rrip_pclink __P((ISO_RRIP_CLINK *p,
84 ISO_RRIP_ANALYZE *ana));
85static int cd9660_rrip_reldir __P((ISO_RRIP_RELDIR *p,
86 ISO_RRIP_ANALYZE *ana));
87static int cd9660_rrip_slink __P((ISO_RRIP_SLINK *p,
88 ISO_RRIP_ANALYZE *ana));
89static int cd9660_rrip_stop __P((ISO_SUSP_HEADER *p,
90 ISO_RRIP_ANALYZE *ana));
91static int cd9660_rrip_tstamp __P((ISO_RRIP_TSTAMP *p,
92 ISO_RRIP_ANALYZE *ana));
93
94/*
95 * POSIX file attribute
96 */
97static int
98cd9660_rrip_attr(p,ana)
99 ISO_RRIP_ATTR *p;
100 ISO_RRIP_ANALYZE *ana;
101{
102 ana->inop->inode.iso_mode = isonum_733(p->mode);
103 ana->inop->inode.iso_uid = isonum_733(p->uid);
104 ana->inop->inode.iso_gid = isonum_733(p->gid);
105 ana->inop->inode.iso_links = isonum_733(p->links);
106 ana->fields &= ~ISO_SUSP_ATTR;
107 return ISO_SUSP_ATTR;
108}
109
110static void
111cd9660_rrip_defattr(isodir,ana)
112 struct iso_directory_record *isodir;
113 ISO_RRIP_ANALYZE *ana;
114{
115 /* But this is a required field! */
116 printf("RRIP without PX field?\n");
117 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
118}
119
120/*
121 * Symbolic Links
122 */
123static int
124cd9660_rrip_slink(p,ana)
125 ISO_RRIP_SLINK *p;
126 ISO_RRIP_ANALYZE *ana;
127{
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128 ISO_RRIP_SLINK_COMPONENT *pcomp;
129 ISO_RRIP_SLINK_COMPONENT *pcompe;
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130 int len, wlen, cont;
131 char *outbuf, *inbuf;
132
133 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
134 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
135 len = *ana->outlen;
136 outbuf = ana->outbuf;
137 cont = ana->cont;
138
139 /*
140 * Gathering a Symbolic name from each component with path
141 */
142 for (;
143 pcomp < pcompe;
144 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
145 + isonum_711(pcomp->clen))) {
146
147 if (!cont) {
148 if (len < ana->maxlen) {
149 len++;
150 *outbuf++ = '/';
151 }
152 }
153 cont = 0;
154
155 inbuf = "..";
156 wlen = 0;
157
158 switch (*pcomp->cflag) {
159
160 case ISO_SUSP_CFLAG_CURRENT:
161 /* Inserting Current */
162 wlen = 1;
163 break;
164
165 case ISO_SUSP_CFLAG_PARENT:
166 /* Inserting Parent */
167 wlen = 2;
168 break;
169
170 case ISO_SUSP_CFLAG_ROOT:
171 /* Inserting slash for ROOT */
172 /* start over from beginning(?) */
173 outbuf -= len;
174 len = 0;
175 break;
176
177 case ISO_SUSP_CFLAG_VOLROOT:
178 /* Inserting a mount point i.e. "/cdrom" */
179 /* same as above */
180 outbuf -= len;
181 len = 0;
182 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
183 wlen = strlen(inbuf);
184 break;
185
186 case ISO_SUSP_CFLAG_HOST:
187 /* Inserting hostname i.e. "kurt.tools.de" */
188 inbuf = hostname;
189 wlen = strlen(hostname);
190 break;
191
192 case ISO_SUSP_CFLAG_CONTINUE:
193 cont = 1;
194 /* fall thru */
195 case 0:
196 /* Inserting component */
197 wlen = isonum_711(pcomp->clen);
198 inbuf = pcomp->name;
199 break;
200 default:
201 printf("RRIP with incorrect flags?");
202 wlen = ana->maxlen + 1;
203 break;
204 }
205
206 if (len + wlen > ana->maxlen) {
207 /* indicate error to caller */
208 ana->cont = 1;
209 ana->fields = 0;
210 ana->outbuf -= *ana->outlen;
211 *ana->outlen = 0;
212 return 0;
213 }
214
215 bcopy(inbuf,outbuf,wlen);
216 outbuf += wlen;
217 len += wlen;
218
219 }
220 ana->outbuf = outbuf;
221 *ana->outlen = len;
222 ana->cont = cont;
223
224 if (!isonum_711(p->flags)) {
225 ana->fields &= ~ISO_SUSP_SLINK;
226 return ISO_SUSP_SLINK;
227 }
228 return 0;
229}
230
231/*
232 * Alternate name
233 */
234static int
235cd9660_rrip_altname(p,ana)
236 ISO_RRIP_ALTNAME *p;
237 ISO_RRIP_ANALYZE *ana;
238{
239 char *inbuf;
240 int wlen;
241 int cont;
242
243 inbuf = "..";
244 wlen = 0;
245 cont = 0;
246
247 switch (*p->flags) {
248 case ISO_SUSP_CFLAG_CURRENT:
249 /* Inserting Current */
250 wlen = 1;
251 break;
252
253 case ISO_SUSP_CFLAG_PARENT:
254 /* Inserting Parent */
255 wlen = 2;
256 break;
257
258 case ISO_SUSP_CFLAG_HOST:
259 /* Inserting hostname i.e. "kurt.tools.de" */
260 inbuf = hostname;
261 wlen = strlen(hostname);
262 break;
263
264 case ISO_SUSP_CFLAG_CONTINUE:
265 cont = 1;
266 /* fall thru */
267 case 0:
268 /* Inserting component */
269 wlen = isonum_711(p->h.length) - 5;
270 inbuf = (char *)p + 5;
271 break;
272
273 default:
274 printf("RRIP with incorrect NM flags?\n");
275 wlen = ana->maxlen + 1;
276 break;
277 }
278
279 if ((*ana->outlen += wlen) > ana->maxlen) {
280 /* treat as no name field */
281 ana->fields &= ~ISO_SUSP_ALTNAME;
282 ana->outbuf -= *ana->outlen - wlen;
283 *ana->outlen = 0;
284 return 0;
285 }
286
287 bcopy(inbuf,ana->outbuf,wlen);
288 ana->outbuf += wlen;
289
290 if (!cont) {
291 ana->fields &= ~ISO_SUSP_ALTNAME;
292 return ISO_SUSP_ALTNAME;
293 }
294 return 0;
295}
296
297static void
298cd9660_rrip_defname(isodir,ana)
299 struct iso_directory_record *isodir;
300 ISO_RRIP_ANALYZE *ana;
301{
302 isofntrans(isodir->name,isonum_711(isodir->name_len),
303 ana->outbuf,ana->outlen,
304 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level);
305 switch (*ana->outbuf) {
306 default:
307 break;
308 case 1:
309 *ana->outlen = 2;
310 /* FALL THROUGH */
311 case 0:
312 /* outlen is 1 already */
313 strcpy(ana->outbuf,"..");
314 break;
315 }
316}
317
318/*
319 * Parent or Child Link
320 */
321static int
322cd9660_rrip_pclink(p,ana)
323 ISO_RRIP_CLINK *p;
324 ISO_RRIP_ANALYZE *ana;
325{
326 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
327 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
328 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
329}
330
331/*
332 * Relocated directory
333 */
334static int
335cd9660_rrip_reldir(p,ana)
336 ISO_RRIP_RELDIR *p;
337 ISO_RRIP_ANALYZE *ana;
338{
339 /* special hack to make caller aware of RE field */
340 *ana->outlen = 0;
341 ana->fields = 0;
342 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
343}
344
345static int
346cd9660_rrip_tstamp(p,ana)
347 ISO_RRIP_TSTAMP *p;
348 ISO_RRIP_ANALYZE *ana;
349{
350 u_char *ptime;
351
352 ptime = p->time;
353
354 /* Check a format of time stamp (7bytes/17bytes) */
355 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
356 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
357 ptime += 7;
358
359 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
360 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
361 ISO_FTYPE_RRIP);
362 ptime += 7;
363 } else
364 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
365
366 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
367 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
368 ISO_FTYPE_RRIP);
369 ptime += 7;
370 } else
371 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
372
373 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
374 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
375 ISO_FTYPE_RRIP);
376 else
377 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
378
379 } else {
380 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
381 ptime += 17;
382
383 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
384 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
385 ptime += 17;
386 } else
387 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
388
389 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
390 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
391 ptime += 17;
392 } else
393 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
394
395 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
396 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
397 else
398 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
399
400 }
401 ana->fields &= ~ISO_SUSP_TSTAMP;
402 return ISO_SUSP_TSTAMP;
403}
404
405static void
406cd9660_rrip_deftstamp(isodir,ana)
407 struct iso_directory_record *isodir;
408 ISO_RRIP_ANALYZE *ana;
409{
410 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
411}
412
413/*
414 * POSIX device modes
415 */
416static int
417cd9660_rrip_device(p,ana)
418 ISO_RRIP_DEVICE *p;
419 ISO_RRIP_ANALYZE *ana;
420{
421 u_int high, low;
422
423 high = isonum_733(p->dev_t_high);
424 low = isonum_733(p->dev_t_low);
425
426 if (high == 0)
427 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low));
428 else
429 ana->inop->inode.iso_rdev = makeudev(high, uminor(low));
430 ana->fields &= ~ISO_SUSP_DEVICE;
431 return ISO_SUSP_DEVICE;
432}
433
434/*
435 * Flag indicating
436 */
437static int
438cd9660_rrip_idflag(p,ana)
439 ISO_RRIP_IDFLAG *p;
440 ISO_RRIP_ANALYZE *ana;
441{
442 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
443 /* special handling of RE field */
444 if (ana->fields&ISO_SUSP_RELDIR)
445 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
446
447 return ISO_SUSP_IDFLAG;
448}
449
450/*
451 * Continuation pointer
452 */
453static int
454cd9660_rrip_cont(p,ana)
455 ISO_RRIP_CONT *p;
456 ISO_RRIP_ANALYZE *ana;
457{
458 ana->iso_ce_blk = isonum_733(p->location);
459 ana->iso_ce_off = isonum_733(p->offset);
460 ana->iso_ce_len = isonum_733(p->length);
461 return ISO_SUSP_CONT;
462}
463
464/*
465 * System Use end
466 */
467static int
468cd9660_rrip_stop(p,ana)
469 ISO_SUSP_HEADER *p;
470 ISO_RRIP_ANALYZE *ana;
471{
472 return ISO_SUSP_STOP;
473}
474
475/*
476 * Extension reference
477 */
478static int
479cd9660_rrip_extref(p,ana)
480 ISO_RRIP_EXTREF *p;
481 ISO_RRIP_ANALYZE *ana;
482{
483 if (isonum_711(p->len_id) != 10
484 || bcmp((char *)p + 8,"RRIP_1991A",10)
485 || isonum_711(p->version) != 1)
486 return 0;
487 ana->fields &= ~ISO_SUSP_EXTREF;
488 return ISO_SUSP_EXTREF;
489}
490
491static int
492cd9660_rrip_loop(isodir,ana,table)
493 struct iso_directory_record *isodir;
494 ISO_RRIP_ANALYZE *ana;
495 RRIP_TABLE *table;
496{
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497 RRIP_TABLE *ptable;
498 ISO_SUSP_HEADER *phead;
499 ISO_SUSP_HEADER *pend;
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500 struct buf *bp = NULL;
501 char *pwhead;
502 u_char c;
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 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c);
513
514 /* If it's not the '.' entry of the root dir obey SP field */
515 if (c != 0 || 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 ana->iso_ce_blk <<
560 (ana->imp->im_bshift - DEV_BSHIFT),
3b568787 561 ana->imp->logical_block_size, &bp))
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562 /* what to do now? */
563 break;
564 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
565 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
566 } else
567 break;
568 }
569 if (bp)
570 brelse(bp);
571 /*
572 * If we don't find the Basic SUSP stuffs, just set default value
573 * (attribute/time stamp)
574 */
575 for (ptable = table; ptable->func2; ptable++)
576 if (!(ptable->result&result))
577 ptable->func2(isodir,ana);
578
579 return result;
580}
581
582/*
583 * Get Attributes.
584 */
585/*
586 * XXX the casts are bogus but will do for now.
587 */
588#define BC (rrt_func_t *)
589static RRIP_TABLE rrip_table_analyze[] = {
590 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
591 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
592 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
593 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
594 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
595 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
596 { "", 0, 0, 0 }
597};
598
599int
600cd9660_rrip_analyze(isodir,inop,imp)
601 struct iso_directory_record *isodir;
602 struct iso_node *inop;
603 struct iso_mnt *imp;
604{
605 ISO_RRIP_ANALYZE analyze;
606
607 analyze.inop = inop;
608 analyze.imp = imp;
609 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
610
611 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
612}
613
614/*
615 * Get Alternate Name.
616 */
617static RRIP_TABLE rrip_table_getname[] = {
618 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
619 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
620 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
621 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
622 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
623 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
624 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
625 { "", 0, 0, 0 }
626};
627
628int
629cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
630 struct iso_directory_record *isodir;
631 char *outbuf;
632 u_short *outlen;
633 ino_t *inump;
634 struct iso_mnt *imp;
635{
636 ISO_RRIP_ANALYZE analyze;
637 RRIP_TABLE *tab;
638 u_char c;
639
640 analyze.outbuf = outbuf;
641 analyze.outlen = outlen;
642 analyze.maxlen = NAME_MAX;
643 analyze.inump = inump;
644 analyze.imp = imp;
645 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
646 *outlen = 0;
647
648 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
649 imp->joliet_level, &c);
650 tab = rrip_table_getname;
651 if (c == 0 || c == 1) {
652 cd9660_rrip_defname(isodir,&analyze);
653
654 analyze.fields &= ~ISO_SUSP_ALTNAME;
655 tab++;
656 }
657
658 return cd9660_rrip_loop(isodir,&analyze,tab);
659}
660
661/*
662 * Get Symbolic Link.
663 */
664static RRIP_TABLE rrip_table_getsymname[] = {
665 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
666 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
667 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
668 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
669 { "", 0, 0, 0 }
670};
671
672int
673cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
674 struct iso_directory_record *isodir;
675 char *outbuf;
676 u_short *outlen;
677 struct iso_mnt *imp;
678{
679 ISO_RRIP_ANALYZE analyze;
680
681 analyze.outbuf = outbuf;
682 analyze.outlen = outlen;
683 *outlen = 0;
684 analyze.maxlen = MAXPATHLEN;
685 analyze.cont = 1; /* don't start with a slash */
686 analyze.imp = imp;
687 analyze.fields = ISO_SUSP_SLINK;
688
689 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
690}
691
692static RRIP_TABLE rrip_table_extref[] = {
693 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
694 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
695 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
696 { "", 0, 0, 0 }
697};
698
699/*
700 * Check for Rock Ridge Extension and return offset of its fields.
701 * Note: We insist on the ER field.
702 */
703int
704cd9660_rrip_offset(isodir,imp)
705 struct iso_directory_record *isodir;
706 struct iso_mnt *imp;
707{
708 ISO_RRIP_OFFSET *p;
709 ISO_RRIP_ANALYZE analyze;
710
711 imp->rr_skip0 = 0;
712 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
713 if (bcmp(p,"SP\7\1\276\357",6)) {
714 /* Maybe, it's a CDROM XA disc? */
715 imp->rr_skip0 = 15;
716 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
717 if (bcmp(p,"SP\7\1\276\357",6))
718 return -1;
719 }
720
721 analyze.imp = imp;
722 analyze.fields = ISO_SUSP_EXTREF;
723 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
724 return -1;
725
726 return isonum_711(p->skip);
727}