xref: /freebsd/sys/fs/cd9660/cd9660_rrip.c (revision 792bbaba989533a1fc93823df1720c8c4aaf0442)
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  * 4. 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  */
36 
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/bio.h>
43 #include <sys/buf.h>
44 #include <sys/jail.h>
45 #include <sys/vnode.h>
46 #include <sys/mount.h>
47 #include <sys/kernel.h>
48 
49 #include <fs/cd9660/iso.h>
50 #include <fs/cd9660/cd9660_node.h>
51 #include <fs/cd9660/cd9660_rrip.h>
52 #include <fs/cd9660/iso_rrip.h>
53 
54 typedef int	rrt_func_t(void *, ISO_RRIP_ANALYZE *ana);
55 
56 typedef struct {
57 	char type[2];
58 	rrt_func_t *func;
59 	void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana);
60 	int result;
61 } RRIP_TABLE;
62 
63 static int	cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana);
64 static int	cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana);
65 static int	cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana);
66 static void	cd9660_rrip_defattr(struct iso_directory_record *isodir,
67 		    ISO_RRIP_ANALYZE *ana);
68 static void	cd9660_rrip_defname(struct iso_directory_record *isodir,
69 		    ISO_RRIP_ANALYZE *ana);
70 static void	cd9660_rrip_deftstamp(struct iso_directory_record *isodir,
71 		    ISO_RRIP_ANALYZE *ana);
72 static int	cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana);
73 static int	cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana);
74 static int	cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana);
75 static int	cd9660_rrip_loop(struct iso_directory_record *isodir,
76 		    ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table);
77 static int	cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana);
78 static int	cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana);
79 static int	cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana);
80 static int	cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana);
81 static int	cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana);
82 
83 /*
84  * POSIX file attribute
85  */
86 static int
87 cd9660_rrip_attr(p,ana)
88 	ISO_RRIP_ATTR *p;
89 	ISO_RRIP_ANALYZE *ana;
90 {
91 	ana->inop->inode.iso_mode = isonum_733(p->mode);
92 	ana->inop->inode.iso_uid = isonum_733(p->uid);
93 	ana->inop->inode.iso_gid = isonum_733(p->gid);
94 	ana->inop->inode.iso_links = isonum_733(p->links);
95 	ana->fields &= ~ISO_SUSP_ATTR;
96 	return ISO_SUSP_ATTR;
97 }
98 
99 static void
100 cd9660_rrip_defattr(isodir,ana)
101 	struct iso_directory_record *isodir;
102 	ISO_RRIP_ANALYZE *ana;
103 {
104 	/* But this is a required field! */
105 	printf("RRIP without PX field?\n");
106 	cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
107 }
108 
109 /*
110  * Symbolic Links
111  */
112 static int
113 cd9660_rrip_slink(p,ana)
114 	ISO_RRIP_SLINK	*p;
115 	ISO_RRIP_ANALYZE *ana;
116 {
117 	ISO_RRIP_SLINK_COMPONENT *pcomp;
118 	ISO_RRIP_SLINK_COMPONENT *pcompe;
119 	int len, wlen, cont;
120 	char *outbuf, *inbuf;
121 	char hostbuf[MAXHOSTNAMELEN];
122 
123 	pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
124 	pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
125 	len = *ana->outlen;
126 	outbuf = ana->outbuf;
127 	cont = ana->cont;
128 
129 	/*
130 	 * Gathering a Symbolic name from each component with path
131 	 */
132 	for (;
133 	     pcomp < pcompe;
134 	     pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
135 						  + isonum_711(pcomp->clen))) {
136 
137 		if (!cont) {
138 			if (len < ana->maxlen) {
139 				len++;
140 				*outbuf++ = '/';
141 			}
142 		}
143 		cont = 0;
144 
145 		inbuf = "..";
146 		wlen = 0;
147 
148 		switch (*pcomp->cflag) {
149 
150 		case ISO_SUSP_CFLAG_CURRENT:
151 			/* Inserting Current */
152 			wlen = 1;
153 			break;
154 
155 		case ISO_SUSP_CFLAG_PARENT:
156 			/* Inserting Parent */
157 			wlen = 2;
158 			break;
159 
160 		case ISO_SUSP_CFLAG_ROOT:
161 			/* Inserting slash for ROOT */
162 			/* Double slash, nothing really to do here. */
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 = ana->imp->im_mountp->mnt_stat.f_mntonname;
171 			wlen = strlen(inbuf);
172 			break;
173 
174 		case ISO_SUSP_CFLAG_HOST:
175 			/* Inserting hostname i.e. "kurt.tools.de" */
176 			getcredhostname(curthread->td_ucred, hostbuf,
177 			    sizeof(hostbuf));
178 			inbuf = hostbuf;
179 			wlen = strlen(inbuf);
180 			break;
181 
182 		case ISO_SUSP_CFLAG_CONTINUE:
183 			cont = 1;
184 			/* FALLTHROUGH */
185 		case 0:
186 			/* Inserting component */
187 			wlen = isonum_711(pcomp->clen);
188 			inbuf = pcomp->name;
189 			break;
190 		default:
191 			printf("RRIP with incorrect flags?");
192 			wlen = ana->maxlen + 1;
193 			break;
194 		}
195 
196 		if (len + wlen > ana->maxlen) {
197 			/* indicate error to caller */
198 			ana->cont = 1;
199 			ana->fields = 0;
200 			ana->outbuf -= *ana->outlen;
201 			*ana->outlen = 0;
202 			return 0;
203 		}
204 
205 		bcopy(inbuf,outbuf,wlen);
206 		outbuf += wlen;
207 		len += wlen;
208 
209 	}
210 	ana->outbuf = outbuf;
211 	*ana->outlen = len;
212 	ana->cont = cont;
213 
214 	if (!isonum_711(p->flags)) {
215 		ana->fields &= ~ISO_SUSP_SLINK;
216 		return ISO_SUSP_SLINK;
217 	}
218 	return 0;
219 }
220 
221 /*
222  * Alternate name
223  */
224 static int
225 cd9660_rrip_altname(p,ana)
226 	ISO_RRIP_ALTNAME *p;
227 	ISO_RRIP_ANALYZE *ana;
228 {
229 	char *inbuf;
230 	int wlen;
231 	int cont;
232 	char hostbuf[MAXHOSTNAMELEN];
233 
234 	inbuf = "..";
235 	wlen = 0;
236 	cont = 0;
237 
238 	switch (*p->flags) {
239 	case ISO_SUSP_CFLAG_CURRENT:
240 		/* Inserting Current */
241 		wlen = 1;
242 		break;
243 
244 	case ISO_SUSP_CFLAG_PARENT:
245 		/* Inserting Parent */
246 		wlen = 2;
247 		break;
248 
249 	case ISO_SUSP_CFLAG_HOST:
250 		/* Inserting hostname i.e. "kurt.tools.de" */
251 		getcredhostname(curthread->td_ucred, hostbuf, sizeof(hostbuf));
252 		inbuf = hostbuf;
253 		wlen = strlen(inbuf);
254 		break;
255 
256 	case ISO_SUSP_CFLAG_CONTINUE:
257 		cont = 1;
258 		/* FALLTHROUGH */
259 	case 0:
260 		/* Inserting component */
261 		wlen = isonum_711(p->h.length) - 5;
262 		inbuf = (char *)p + 5;
263 		break;
264 
265 	default:
266 		printf("RRIP with incorrect NM flags?\n");
267 		wlen = ana->maxlen + 1;
268 		break;
269 	}
270 
271 	if ((*ana->outlen += wlen) > ana->maxlen) {
272 		/* treat as no name field */
273 		ana->fields &= ~ISO_SUSP_ALTNAME;
274 		ana->outbuf -= *ana->outlen - wlen;
275 		*ana->outlen = 0;
276 		return 0;
277 	}
278 
279 	bcopy(inbuf,ana->outbuf,wlen);
280 	ana->outbuf += wlen;
281 
282 	if (!cont) {
283 		ana->fields &= ~ISO_SUSP_ALTNAME;
284 		return ISO_SUSP_ALTNAME;
285 	}
286 	return 0;
287 }
288 
289 static void
290 cd9660_rrip_defname(isodir,ana)
291 	struct iso_directory_record *isodir;
292 	ISO_RRIP_ANALYZE *ana;
293 {
294 	isofntrans(isodir->name,isonum_711(isodir->name_len),
295 		   ana->outbuf,ana->outlen,
296 		   1,isonum_711(isodir->flags)&4, ana->imp->joliet_level,
297 		   ana->imp->im_flags, ana->imp->im_d2l);
298 	switch (*ana->outbuf) {
299 	default:
300 		break;
301 	case 1:
302 		*ana->outlen = 2;
303 		/* FALLTHROUGH */
304 	case 0:
305 		/* outlen is 1 already */
306 		strcpy(ana->outbuf,"..");
307 		break;
308 	}
309 }
310 
311 /*
312  * Parent or Child Link
313  */
314 static int
315 cd9660_rrip_pclink(p,ana)
316 	ISO_RRIP_CLINK	*p;
317 	ISO_RRIP_ANALYZE *ana;
318 {
319 	*ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
320 	ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
321 	return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
322 }
323 
324 /*
325  * Relocated directory
326  */
327 static int
328 cd9660_rrip_reldir(p,ana)
329 	ISO_RRIP_RELDIR	 *p;
330 	ISO_RRIP_ANALYZE *ana;
331 {
332 	/* special hack to make caller aware of RE field */
333 	*ana->outlen = 0;
334 	ana->fields = 0;
335 	return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
336 }
337 
338 static int
339 cd9660_rrip_tstamp(p,ana)
340 	ISO_RRIP_TSTAMP *p;
341 	ISO_RRIP_ANALYZE *ana;
342 {
343 	u_char *ptime;
344 
345 	ptime = p->time;
346 
347 	/* Check a format of time stamp (7bytes/17bytes) */
348 	if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
349 		if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
350 			ptime += 7;
351 
352 		if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
353 			cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
354 					    ISO_FTYPE_RRIP);
355 			ptime += 7;
356 		} else
357 			bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
358 
359 		if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
360 			cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
361 					    ISO_FTYPE_RRIP);
362 			ptime += 7;
363 		} else
364 			ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
365 
366 		if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
367 			cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
368 					    ISO_FTYPE_RRIP);
369 		else
370 			ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
371 
372 	} else {
373 		if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
374 			ptime += 17;
375 
376 		if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
377 			cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
378 			ptime += 17;
379 		} else
380 			bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
381 
382 		if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
383 			cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
384 			ptime += 17;
385 		} else
386 			ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
387 
388 		if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
389 			cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
390 		else
391 			ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
392 
393 	}
394 	ana->fields &= ~ISO_SUSP_TSTAMP;
395 	return ISO_SUSP_TSTAMP;
396 }
397 
398 static void
399 cd9660_rrip_deftstamp(isodir,ana)
400 	struct iso_directory_record  *isodir;
401 	ISO_RRIP_ANALYZE *ana;
402 {
403 	cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
404 }
405 
406 /*
407  * POSIX device modes
408  */
409 static int
410 cd9660_rrip_device(p,ana)
411 	ISO_RRIP_DEVICE *p;
412 	ISO_RRIP_ANALYZE *ana;
413 {
414 	u_int high, low;
415 
416 	high = isonum_733(p->dev_t_high);
417 	low  = isonum_733(p->dev_t_low);
418 
419 	if (high == 0)
420 		ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
421 	else
422 		ana->inop->inode.iso_rdev = makedev(high, minor(low));
423 	ana->fields &= ~ISO_SUSP_DEVICE;
424 	return ISO_SUSP_DEVICE;
425 }
426 
427 /*
428  * Flag indicating
429  */
430 static int
431 cd9660_rrip_idflag(p,ana)
432 	ISO_RRIP_IDFLAG *p;
433 	ISO_RRIP_ANALYZE *ana;
434 {
435 	ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
436 	/* special handling of RE field */
437 	if (ana->fields&ISO_SUSP_RELDIR)
438 		return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
439 
440 	return ISO_SUSP_IDFLAG;
441 }
442 
443 /*
444  * Continuation pointer
445  */
446 static int
447 cd9660_rrip_cont(p,ana)
448 	ISO_RRIP_CONT *p;
449 	ISO_RRIP_ANALYZE *ana;
450 {
451 	ana->iso_ce_blk = isonum_733(p->location);
452 	ana->iso_ce_off = isonum_733(p->offset);
453 	ana->iso_ce_len = isonum_733(p->length);
454 	return ISO_SUSP_CONT;
455 }
456 
457 /*
458  * System Use end
459  */
460 static int
461 cd9660_rrip_stop(p,ana)
462 	ISO_SUSP_HEADER *p;
463 	ISO_RRIP_ANALYZE *ana;
464 {
465 	return ISO_SUSP_STOP;
466 }
467 
468 /*
469  * Extension reference
470  */
471 static int
472 cd9660_rrip_extref(p,ana)
473 	ISO_RRIP_EXTREF *p;
474 	ISO_RRIP_ANALYZE *ana;
475 {
476 	if ( ! ((isonum_711(p->len_id) == 10
477 	      && bcmp((char *)p + 8,"RRIP_1991A",10) == 0)
478 	    || (isonum_711(p->len_id) == 10
479 	      && bcmp((char *)p + 8,"IEEE_P1282",10) == 0)
480 	    || (isonum_711(p->len_id) ==  9
481 	      && bcmp((char *)p + 8,"IEEE_1282",  9) == 0))
482 	    || isonum_711(p->version) != 1)
483 		return 0;
484 	ana->fields &= ~ISO_SUSP_EXTREF;
485 	return ISO_SUSP_EXTREF;
486 }
487 
488 static int
489 cd9660_rrip_loop(isodir,ana,table)
490 	struct iso_directory_record *isodir;
491 	ISO_RRIP_ANALYZE *ana;
492 	RRIP_TABLE *table;
493 {
494 	RRIP_TABLE *ptable;
495 	ISO_SUSP_HEADER *phead;
496 	ISO_SUSP_HEADER *pend;
497 	struct buf *bp = NULL;
498 	char *pwhead;
499 	u_short c;
500 	int result;
501 
502 	/*
503 	 * Note: If name length is odd,
504 	 *	 it will be padding 1 byte after the name
505 	 */
506 	pwhead = isodir->name + isonum_711(isodir->name_len);
507 	if (!(isonum_711(isodir->name_len)&1))
508 		pwhead++;
509 	isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
510 		ana->imp->im_flags, ana->imp->im_d2l);
511 
512 	/* If it's not the '.' entry of the root dir obey SP field */
513 	if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent)
514 		pwhead += ana->imp->rr_skip;
515 	else
516 		pwhead += ana->imp->rr_skip0;
517 
518 	phead = (ISO_SUSP_HEADER *)pwhead;
519 	pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
520 
521 	result = 0;
522 	while (1) {
523 		ana->iso_ce_len = 0;
524 		/*
525 		 * Note: "pend" should be more than one SUSP header
526 		 */
527 		while (pend >= phead + 1) {
528 			if (isonum_711(phead->version) == 1) {
529 				for (ptable = table; ptable->func; ptable++) {
530 					if (*phead->type == *ptable->type
531 					    && phead->type[1] == ptable->type[1]) {
532 						result |= ptable->func(phead,ana);
533 						break;
534 					}
535 				}
536 				if (!ana->fields)
537 					break;
538 			}
539 			if (result&ISO_SUSP_STOP) {
540 				result &= ~ISO_SUSP_STOP;
541 				break;
542 			}
543 			/* plausibility check */
544 			if (isonum_711(phead->length) < sizeof(*phead))
545 				break;
546 			/*
547 			 * move to next SUSP
548 			 * Hopefully this works with newer versions, too
549 			 */
550 			phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
551 		}
552 
553 		if (ana->fields && ana->iso_ce_len) {
554 			if (ana->iso_ce_blk >= ana->imp->volume_space_size
555 			    || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
556 			    || bread(ana->imp->im_devvp,
557 				     ana->iso_ce_blk <<
558 				     (ana->imp->im_bshift - DEV_BSHIFT),
559 				     ana->imp->logical_block_size, NOCRED, &bp))
560 				/* what to do now? */
561 				break;
562 			phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
563 			pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
564 		} else
565 			break;
566 	}
567 	if (bp)
568 		brelse(bp);
569 	/*
570 	 * If we don't find the Basic SUSP stuffs, just set default value
571 	 *   (attribute/time stamp)
572 	 */
573 	for (ptable = table; ptable->func2; ptable++)
574 		if (!(ptable->result&result))
575 			ptable->func2(isodir,ana);
576 
577 	return result;
578 }
579 
580 /*
581  * Get Attributes.
582  */
583 /*
584  * XXX the casts are bogus but will do for now.
585  */
586 #define	BC	(rrt_func_t *)
587 static RRIP_TABLE rrip_table_analyze[] = {
588 	{ "PX", BC cd9660_rrip_attr,	cd9660_rrip_defattr,	ISO_SUSP_ATTR },
589 	{ "TF", BC cd9660_rrip_tstamp,	cd9660_rrip_deftstamp,	ISO_SUSP_TSTAMP },
590 	{ "PN", BC cd9660_rrip_device,	0,			ISO_SUSP_DEVICE },
591 	{ "RR", BC cd9660_rrip_idflag,	0,			ISO_SUSP_IDFLAG },
592 	{ "CE", BC cd9660_rrip_cont,	0,			ISO_SUSP_CONT },
593 	{ "ST", BC cd9660_rrip_stop,	0,			ISO_SUSP_STOP },
594 	{ "",	0,			0,			0 }
595 };
596 
597 int
598 cd9660_rrip_analyze(isodir,inop,imp)
599 	struct iso_directory_record *isodir;
600 	struct iso_node *inop;
601 	struct iso_mnt *imp;
602 {
603 	ISO_RRIP_ANALYZE analyze;
604 
605 	analyze.inop = inop;
606 	analyze.imp = imp;
607 	analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
608 
609 	return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
610 }
611 
612 /*
613  * Get Alternate Name.
614  */
615 static RRIP_TABLE rrip_table_getname[] = {
616 	{ "NM", BC cd9660_rrip_altname,	cd9660_rrip_defname,	ISO_SUSP_ALTNAME },
617 	{ "CL", BC cd9660_rrip_pclink,	0,			ISO_SUSP_CLINK|ISO_SUSP_PLINK },
618 	{ "PL", BC cd9660_rrip_pclink,	0,			ISO_SUSP_CLINK|ISO_SUSP_PLINK },
619 	{ "RE", BC cd9660_rrip_reldir,	0,			ISO_SUSP_RELDIR },
620 	{ "RR", BC cd9660_rrip_idflag,	0,			ISO_SUSP_IDFLAG },
621 	{ "CE", BC cd9660_rrip_cont,	0,			ISO_SUSP_CONT },
622 	{ "ST", BC cd9660_rrip_stop,	0,			ISO_SUSP_STOP },
623 	{ "",	0,			0,			0 }
624 };
625 
626 int
627 cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
628 	struct iso_directory_record *isodir;
629 	char *outbuf;
630 	u_short *outlen;
631 	cd_ino_t *inump;
632 	struct iso_mnt *imp;
633 {
634 	ISO_RRIP_ANALYZE analyze;
635 	RRIP_TABLE *tab;
636 	u_short c;
637 
638 	analyze.outbuf = outbuf;
639 	analyze.outlen = outlen;
640 	analyze.maxlen = NAME_MAX;
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 	isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
647 		imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l);
648 	tab = rrip_table_getname;
649 	if (c == 0 || c == 1) {
650 		cd9660_rrip_defname(isodir,&analyze);
651 
652 		analyze.fields &= ~ISO_SUSP_ALTNAME;
653 		tab++;
654 	}
655 
656 	return cd9660_rrip_loop(isodir,&analyze,tab);
657 }
658 
659 /*
660  * Get Symbolic Link.
661  */
662 static RRIP_TABLE rrip_table_getsymname[] = {
663 	{ "SL", BC cd9660_rrip_slink,	0,			ISO_SUSP_SLINK },
664 	{ "RR", BC cd9660_rrip_idflag,	0,			ISO_SUSP_IDFLAG },
665 	{ "CE", BC cd9660_rrip_cont,	0,			ISO_SUSP_CONT },
666 	{ "ST", BC cd9660_rrip_stop,	0,			ISO_SUSP_STOP },
667 	{ "",	0,			0,			0 }
668 };
669 
670 int
671 cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
672 	struct iso_directory_record *isodir;
673 	char *outbuf;
674 	u_short *outlen;
675 	struct iso_mnt *imp;
676 {
677 	ISO_RRIP_ANALYZE analyze;
678 
679 	analyze.outbuf = outbuf;
680 	analyze.outlen = outlen;
681 	*outlen = 0;
682 	analyze.maxlen = MAXPATHLEN;
683 	analyze.cont = 1;		/* don't start with a slash */
684 	analyze.imp = imp;
685 	analyze.fields = ISO_SUSP_SLINK;
686 
687 	return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
688 }
689 
690 static RRIP_TABLE rrip_table_extref[] = {
691 	{ "ER", BC cd9660_rrip_extref,	0,			ISO_SUSP_EXTREF },
692 	{ "CE", BC cd9660_rrip_cont,	0,			ISO_SUSP_CONT },
693 	{ "ST", BC cd9660_rrip_stop,	0,			ISO_SUSP_STOP },
694 	{ "",	0,			0,			0 }
695 };
696 
697 /*
698  * Check for Rock Ridge Extension and return offset of its fields.
699  * Note: We insist on the ER field.
700  */
701 int
702 cd9660_rrip_offset(isodir,imp)
703 	struct iso_directory_record *isodir;
704 	struct iso_mnt *imp;
705 {
706 	ISO_RRIP_OFFSET *p;
707 	ISO_RRIP_ANALYZE analyze;
708 
709 	imp->rr_skip0 = 0;
710 	p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
711 	if (bcmp(p,"SP\7\1\276\357",6)) {
712 		/* Maybe, it's a CDROM XA disc? */
713 		imp->rr_skip0 = 15;
714 		p = (ISO_RRIP_OFFSET *)((char *)p + 15);
715 		if (bcmp(p,"SP\7\1\276\357",6))
716 			return -1;
717 	}
718 
719 	analyze.imp = imp;
720 	analyze.fields = ISO_SUSP_EXTREF;
721 	if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
722 		return -1;
723 
724 	return isonum_711(p->skip);
725 }
726