xref: /openbsd/sys/isofs/cd9660/cd9660_rrip.c (revision 5b133f3f) 
1 /*	$OpenBSD: cd9660_rrip.c,v 1.17 2023/03/08 04:43:08 guenther Exp $	*/
2 /*	$NetBSD: cd9660_rrip.c,v 1.17 1997/01/24 00:27:32 cgd Exp $	*/
3 
4 /*-
5  * Copyright (c) 1993, 1994
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley
9  * by Pace Willisson (pace@blitz.com).  The Rock Ridge Extension
10  * Support code is derived from software contributed to Berkeley
11  * by Atsushi Murai (amurai@spec.co.jp).
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. Neither the name of the University nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  *
37  *	@(#)cd9660_rrip.c	8.6 (Berkeley) 12/5/94
38  */
39 
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/namei.h>
43 #include <sys/buf.h>
44 #include <sys/vnode.h>
45 #include <sys/lock.h>
46 #include <sys/mount.h>
47 #include <sys/kernel.h>
48 #include <sys/stat.h>
49 #include <sys/time.h>
50 
51 #include <isofs/cd9660/iso.h>
52 #include <isofs/cd9660/cd9660_extern.h>
53 #include <isofs/cd9660/cd9660_node.h>
54 #include <isofs/cd9660/cd9660_rrip.h>
55 #include <isofs/cd9660/iso_rrip.h>
56 
57 typedef struct {
58 	char type[2];
59 	int (*func)(void *, ISO_RRIP_ANALYZE *);
60 	void (*func2)(void *, ISO_RRIP_ANALYZE *);
61 	int result;
62 } RRIP_TABLE;
63 
64 static int cd9660_rrip_attr(void *, ISO_RRIP_ANALYZE *);
65 static void cd9660_rrip_defattr(void *, ISO_RRIP_ANALYZE *);
66 static int cd9660_rrip_slink(void *, ISO_RRIP_ANALYZE *);
67 static int cd9660_rrip_altname(void *, ISO_RRIP_ANALYZE *);
68 static void cd9660_rrip_defname(void *, ISO_RRIP_ANALYZE *);
69 static int cd9660_rrip_pclink(void *, ISO_RRIP_ANALYZE *);
70 static int cd9660_rrip_reldir(void *, ISO_RRIP_ANALYZE *);
71 static int cd9660_rrip_tstamp(void *, ISO_RRIP_ANALYZE *);
72 static void cd9660_rrip_deftstamp(void *, ISO_RRIP_ANALYZE *);
73 static int cd9660_rrip_device(void *, ISO_RRIP_ANALYZE *);
74 static int cd9660_rrip_idflag(void *, ISO_RRIP_ANALYZE *);
75 static int cd9660_rrip_cont(void *, ISO_RRIP_ANALYZE *);
76 static int cd9660_rrip_stop(void *, ISO_RRIP_ANALYZE *);
77 static int cd9660_rrip_extref(void *, ISO_RRIP_ANALYZE *);
78 static int cd9660_rrip_loop(struct iso_directory_record *,
79     ISO_RRIP_ANALYZE *, RRIP_TABLE *);
80 /*
81  * POSIX file attribute
82  */
83 static int
cd9660_rrip_attr(void * v,ISO_RRIP_ANALYZE * ana)84 cd9660_rrip_attr(void *v, ISO_RRIP_ANALYZE *ana)
85 {
86 	ISO_RRIP_ATTR *p = v;
87 
88 	ana->inop->inode.iso_mode = isonum_733(p->mode);
89 	ana->inop->inode.iso_uid = isonum_733(p->uid);
90 	ana->inop->inode.iso_gid = isonum_733(p->gid);
91 	ana->inop->inode.iso_links = isonum_733(p->links);
92 	ana->fields &= ~ISO_SUSP_ATTR;
93 	return (ISO_SUSP_ATTR);
94 }
95 
96 static void
cd9660_rrip_defattr(void * v,ISO_RRIP_ANALYZE * ana)97 cd9660_rrip_defattr(void *v, ISO_RRIP_ANALYZE *ana)
98 {
99 	struct iso_directory_record *isodir = v;
100 
101 	/* But this is a required field! */
102 	printf("RRIP without PX field?\n");
103 	cd9660_defattr(isodir, ana->inop, NULL);
104 }
105 
106 /*
107  * Symbolic Links
108  */
109 static int
cd9660_rrip_slink(void * v,ISO_RRIP_ANALYZE * ana)110 cd9660_rrip_slink(void *v, ISO_RRIP_ANALYZE *ana)
111 {
112 	ISO_RRIP_SLINK  *p = v;
113 	ISO_RRIP_SLINK_COMPONENT *pcomp;
114 	ISO_RRIP_SLINK_COMPONENT *pcompe;
115 	int len, wlen, cont;
116 	char *outbuf, *inbuf;
117 
118 	pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
119 	pcompe =
120 	    (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
121 	len = *ana->outlen;
122 	outbuf = ana->outbuf;
123 	cont = ana->cont;
124 
125 	/*
126 	 * Gathering a Symbolic name from each component with path
127 	 */
128 	for (; pcomp < pcompe;
129 	    pcomp = (ISO_RRIP_SLINK_COMPONENT *)
130 	    ((char *)pcomp + ISO_RRIP_SLSIZ + isonum_711(pcomp->clen))) {
131 
132 		if (!cont) {
133 			if (len < ana->maxlen) {
134 				len++;
135 				*outbuf++ = '/';
136 			}
137 		}
138 		cont = 0;
139 
140 		inbuf = "..";
141 		wlen = 0;
142 
143 		switch (*pcomp->cflag) {
144 
145 		case ISO_SUSP_CFLAG_CURRENT:
146 			/* Inserting Current */
147 			wlen = 1;
148 			break;
149 
150 		case ISO_SUSP_CFLAG_PARENT:
151 			/* Inserting Parent */
152 			wlen = 2;
153 			break;
154 
155 		case ISO_SUSP_CFLAG_ROOT:
156 			/* Inserting slash for ROOT */
157 			/* start over from beginning(?) */
158 			outbuf -= len;
159 			len = 0;
160 			break;
161 
162 		case ISO_SUSP_CFLAG_VOLROOT:
163 			/* Inserting a mount point i.e. "/cdrom" */
164 			/* same as above */
165 			outbuf -= len;
166 			len = 0;
167 			inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
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 = hostnamelen;
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 			printf("RRIP with incorrect flags?");
187 			wlen = ana->maxlen + 1;
188 			break;
189 		}
190 
191 		if (len + wlen > ana->maxlen) {
192 			/* indicate error to caller */
193 			ana->cont = 1;
194 			ana->fields = 0;
195 			ana->outbuf -= *ana->outlen;
196 			*ana->outlen = 0;
197 			return (0);
198 		}
199 
200 		bcopy(inbuf, outbuf, wlen);
201 		outbuf += wlen;
202 		len += wlen;
203 	}
204 	ana->outbuf = outbuf;
205 	*ana->outlen = len;
206 	ana->cont = cont;
207 
208 	if (!isonum_711(p->flags)) {
209 		ana->fields &= ~ISO_SUSP_SLINK;
210 		return (ISO_SUSP_SLINK);
211 	}
212 	return (0);
213 }
214 
215 /*
216  * Alternate name
217  */
218 static int
cd9660_rrip_altname(void * v,ISO_RRIP_ANALYZE * ana)219 cd9660_rrip_altname(void *v, ISO_RRIP_ANALYZE *ana)
220 {
221 	ISO_RRIP_ALTNAME *p = v;
222 	char *inbuf;
223 	int wlen;
224 	int cont;
225 
226 	inbuf = "..";
227 	wlen = 0;
228 	cont = 0;
229 
230 	switch (*p->flags) {
231 	case ISO_SUSP_CFLAG_CURRENT:
232 		/* Inserting Current */
233 		wlen = 1;
234 		break;
235 
236 	case ISO_SUSP_CFLAG_PARENT:
237 		/* Inserting Parent */
238 		wlen = 2;
239 		break;
240 
241 	case ISO_SUSP_CFLAG_HOST:
242 		/* Inserting hostname i.e. "kurt.tools.de" */
243 		inbuf = hostname;
244 		wlen = hostnamelen;
245 		break;
246 
247 	case ISO_SUSP_CFLAG_CONTINUE:
248 		cont = 1;
249 		/* FALLTHROUGH */
250 	case 0:
251 		/* Inserting component */
252 		wlen = isonum_711(p->h.length) - 5;
253 		inbuf = (char *)p + 5;
254 		break;
255 
256 	default:
257 		printf("RRIP with incorrect NM flags?\n");
258 		wlen = ana->maxlen + 1;
259 		break;
260 	}
261 
262 	if ((*ana->outlen += wlen) > ana->maxlen) {
263 		/* treat as no name field */
264 		ana->fields &= ~ISO_SUSP_ALTNAME;
265 		ana->outbuf -= *ana->outlen - wlen;
266 		*ana->outlen = 0;
267 		return (0);
268 	}
269 
270 	bcopy(inbuf, ana->outbuf, wlen);
271 	ana->outbuf += wlen;
272 
273 	if (!cont) {
274 		ana->fields &= ~ISO_SUSP_ALTNAME;
275 		return (ISO_SUSP_ALTNAME);
276 	}
277 	return (0);
278 }
279 
280 static void
cd9660_rrip_defname(void * v,ISO_RRIP_ANALYZE * ana)281 cd9660_rrip_defname(void *v, ISO_RRIP_ANALYZE *ana)
282 {
283 	struct iso_directory_record *isodir = v;
284 
285 	strlcpy(ana->outbuf, "..", ana->maxlen - *ana->outlen);
286 	switch (*isodir->name) {
287 	default:
288 		isofntrans(isodir->name, isonum_711(isodir->name_len),
289 		    ana->outbuf, ana->outlen, 1,
290 		    isonum_711(isodir->flags) & 4, ana->imp->joliet_level);
291 		break;
292 	case 0:
293 		*ana->outlen = 1;
294 		break;
295 	case 1:
296 		*ana->outlen = 2;
297 		break;
298 	}
299 }
300 
301 /*
302  * Parent or Child Link
303  */
304 static int
cd9660_rrip_pclink(void * v,ISO_RRIP_ANALYZE * ana)305 cd9660_rrip_pclink(void *v, ISO_RRIP_ANALYZE *ana)
306 {
307 	ISO_RRIP_CLINK  *p = v;
308 
309 	*ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
310 	ana->fields &= ~(ISO_SUSP_CLINK | ISO_SUSP_PLINK);
311 	return (*p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK);
312 }
313 
314 /*
315  * Relocated directory
316  */
317 static int
cd9660_rrip_reldir(void * v,ISO_RRIP_ANALYZE * ana)318 cd9660_rrip_reldir(void *v, 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 |
324 	    ISO_SUSP_PLINK);
325 }
326 
327 static int
cd9660_rrip_tstamp(void * v,ISO_RRIP_ANALYZE * ana)328 cd9660_rrip_tstamp(void *v, ISO_RRIP_ANALYZE *ana)
329 {
330 	ISO_RRIP_TSTAMP *p = v;
331 	u_char *ptime;
332 
333 	ptime = p->time;
334 
335 	/* Check a format of time stamp (7bytes/17bytes) */
336 	if (!(*p->flags & ISO_SUSP_TSTAMP_FORM17)) {
337 		if (*p->flags & ISO_SUSP_TSTAMP_CREAT)
338 			ptime += 7;
339 
340 		if (*p->flags & ISO_SUSP_TSTAMP_MODIFY) {
341 			cd9660_tstamp_conv7(ptime,
342 			    &ana->inop->inode.iso_mtime);
343 			ptime += 7;
344 		} else
345 			bzero(&ana->inop->inode.iso_mtime,
346 			    sizeof(struct timespec));
347 
348 		if (*p->flags & ISO_SUSP_TSTAMP_ACCESS) {
349 			cd9660_tstamp_conv7(ptime,
350 			    &ana->inop->inode.iso_atime);
351 			ptime += 7;
352 		} else
353 			ana->inop->inode.iso_atime =
354 			    ana->inop->inode.iso_mtime;
355 
356 		if (*p->flags & ISO_SUSP_TSTAMP_ATTR)
357 			cd9660_tstamp_conv7(ptime,
358 			    &ana->inop->inode.iso_ctime);
359 		else
360 			ana->inop->inode.iso_ctime =
361 			    ana->inop->inode.iso_mtime;
362 
363 	} else {
364 		if (*p->flags & ISO_SUSP_TSTAMP_CREAT)
365 			ptime += 17;
366 
367 		if (*p->flags & ISO_SUSP_TSTAMP_MODIFY) {
368 			cd9660_tstamp_conv17(ptime,
369 			    &ana->inop->inode.iso_mtime);
370 			ptime += 17;
371 		} else
372 			bzero(&ana->inop->inode.iso_mtime,
373 			    sizeof(struct timespec));
374 
375 		if (*p->flags & ISO_SUSP_TSTAMP_ACCESS) {
376 			cd9660_tstamp_conv17(ptime,
377 			    &ana->inop->inode.iso_atime);
378 			ptime += 17;
379 		} else
380 			ana->inop->inode.iso_atime =
381 			    ana->inop->inode.iso_mtime;
382 
383 		if (*p->flags & ISO_SUSP_TSTAMP_ATTR)
384 			cd9660_tstamp_conv17(ptime,
385 			    &ana->inop->inode.iso_ctime);
386 		else
387 			ana->inop->inode.iso_ctime =
388 			    ana->inop->inode.iso_mtime;
389 
390 	}
391 	ana->fields &= ~ISO_SUSP_TSTAMP;
392 	return (ISO_SUSP_TSTAMP);
393 }
394 
395 static void
cd9660_rrip_deftstamp(void * v,ISO_RRIP_ANALYZE * ana)396 cd9660_rrip_deftstamp(void *v, ISO_RRIP_ANALYZE *ana)
397 {
398 	struct iso_directory_record  *isodir = v;
399 
400 	cd9660_deftstamp(isodir, ana->inop, NULL);
401 }
402 
403 /*
404  * POSIX device modes
405  */
406 static int
cd9660_rrip_device(void * v,ISO_RRIP_ANALYZE * ana)407 cd9660_rrip_device(void *v, ISO_RRIP_ANALYZE *ana)
408 {
409 	ISO_RRIP_DEVICE *p = v;
410 	u_int high, low;
411 
412 	high = isonum_733(p->dev_t_high);
413 	low  = isonum_733(p->dev_t_low);
414 
415 	if (high == 0)
416 		ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
417 	else
418 		ana->inop->inode.iso_rdev = makedev(high, minor(low));
419 	ana->fields &= ~ISO_SUSP_DEVICE;
420 	return (ISO_SUSP_DEVICE);
421 }
422 
423 /*
424  * Flag indicating
425  */
426 static int
cd9660_rrip_idflag(void * v,ISO_RRIP_ANALYZE * ana)427 cd9660_rrip_idflag(void *v, ISO_RRIP_ANALYZE *ana)
428 {
429 	ISO_RRIP_IDFLAG *p = v;
430 
431 	/* don't touch high bits */
432 	ana->fields &= isonum_711(p->flags) | ~0xff;
433 	/* special handling of RE field */
434 	if (ana->fields & ISO_SUSP_RELDIR)
435 		return (cd9660_rrip_reldir(p, ana));
436 
437 	return (ISO_SUSP_IDFLAG);
438 }
439 
440 /*
441  * Continuation pointer
442  */
443 static int
cd9660_rrip_cont(void * v,ISO_RRIP_ANALYZE * ana)444 cd9660_rrip_cont(void *v, ISO_RRIP_ANALYZE *ana)
445 {
446 	ISO_RRIP_CONT *p = v;
447 
448 	ana->iso_ce_blk = isonum_733(p->location);
449 	ana->iso_ce_off = isonum_733(p->offset);
450 	ana->iso_ce_len = isonum_733(p->length);
451 	return (ISO_SUSP_CONT);
452 }
453 
454 /*
455  * System Use end
456  */
457 static int
cd9660_rrip_stop(void * v,ISO_RRIP_ANALYZE * ana)458 cd9660_rrip_stop(void *v, ISO_RRIP_ANALYZE *ana)
459 {
460 	return (ISO_SUSP_STOP);
461 }
462 
463 /*
464  * Extension reference
465  */
466 static int
cd9660_rrip_extref(void * v,ISO_RRIP_ANALYZE * ana)467 cd9660_rrip_extref(void *v, ISO_RRIP_ANALYZE *ana)
468 {
469 	ISO_RRIP_EXTREF *p = v;
470 
471 	if (isonum_711(p->version) != 1)
472 		return (0);
473 	if (isonum_711(p->len_id) != 9 &&
474 	    isonum_711(p->len_id) != 10)
475 		return (0);
476 	if (isonum_711(p->len_id) == 9 &&
477 	    bcmp((char *)p + 8, "IEEE_1282", 9))
478 		return (0);
479 	if (isonum_711(p->len_id) == 10 &&
480 	    bcmp((char *)p + 8, "IEEE_P1282", 10) &&
481 	    bcmp((char *)p + 8, "RRIP_1991A", 10))
482 		return (0);
483 	ana->fields &= ~ISO_SUSP_EXTREF;
484 	return (ISO_SUSP_EXTREF);
485 }
486 
487 
488 static int
cd9660_rrip_loop(struct iso_directory_record * isodir,ISO_RRIP_ANALYZE * ana,RRIP_TABLE * table)489 cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana,
490     RRIP_TABLE *table)
491 {
492 	RRIP_TABLE *ptable;
493 	ISO_SUSP_HEADER *phead;
494 	ISO_SUSP_HEADER *pend;
495 	struct buf *bp = NULL;
496 	char *pwhead;
497 	u_char c;
498 	int result;
499 
500 	/*
501 	 * Note: If name length is odd,
502 	 *       it will be padded by 1 byte after the name
503 	 */
504 	pwhead = isodir->name + isonum_711(isodir->name_len);
505 	if (!(isonum_711(isodir->name_len) & 1))
506 		pwhead++;
507 	isochar(isodir->name, pwhead, ana->imp->joliet_level, &c);
508 
509 	/* If it's not the '.' entry of the root dir obey SP field */
510 	if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent)
511 		pwhead += ana->imp->rr_skip;
512 	else
513 		pwhead += ana->imp->rr_skip0;
514 
515 	phead = (ISO_SUSP_HEADER *)pwhead;
516 	pend =
517 	    (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
518 
519 	result = 0;
520 	while (1) {
521 		ana->iso_ce_len = 0;
522 		/*
523 		 * Note: "pend" should be more than one SUSP header
524 		 */
525 		while (pend >= phead + 1) {
526 			if (isonum_711(phead->version) == 1) {
527 				for (ptable = table; ptable->func; ptable++) {
528 					if (*phead->type == *ptable->type &&
529 					    phead->type[1] == ptable->type[1])
530 					    {
531 						result |=
532 						    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 *)
551 			    ((char *)phead + isonum_711(phead->length));
552 		}
553 
554 		if (ana->fields && ana->iso_ce_len) {
555 			if (ana->iso_ce_blk >= ana->imp->volume_space_size ||
556 			    ana->iso_ce_off + ana->iso_ce_len >
557 			    ana->imp->logical_block_size ||
558 			    bread(ana->imp->im_devvp, ana->iso_ce_blk <<
559 			    (ana->imp->im_bshift - DEV_BSHIFT),
560 			    ana->imp->logical_block_size, &bp))
561 				/* what to do now? */
562 				break;
563 			phead =
564 			    (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
565 			pend = (ISO_SUSP_HEADER *)
566 			    ((char *)phead + ana->iso_ce_len);
567 		} else
568 			break;
569 	}
570 	if (bp)
571 		brelse(bp);
572 	/*
573 	 * If we don't find the Basic SUSP stuffs, just set default value
574 	 *   (attribute/time stamp)
575 	 */
576 	for (ptable = table; ptable->func2; ptable++)
577 		if (!(ptable->result & result))
578 			ptable->func2(isodir, ana);
579 
580 	return (result);
581 }
582 
583 /*
584  * Get Attributes.
585  */
586 static RRIP_TABLE rrip_table_analyze[] = {
587 	{ "PX", cd9660_rrip_attr,	cd9660_rrip_defattr,
588 	    ISO_SUSP_ATTR },
589 	{ "TF", cd9660_rrip_tstamp,	cd9660_rrip_deftstamp,
590 	    ISO_SUSP_TSTAMP },
591 	{ "PN", cd9660_rrip_device,	0,
592 	    ISO_SUSP_DEVICE },
593 	{ "RR", cd9660_rrip_idflag,	0,
594 	    ISO_SUSP_IDFLAG },
595 	{ "CE", cd9660_rrip_cont,	0,
596 	    ISO_SUSP_CONT },
597 	{ "ST", cd9660_rrip_stop,	0,
598 	    ISO_SUSP_STOP },
599 	{ "",	0,			0,
600 	    0 }
601 };
602 
603 int
cd9660_rrip_analyze(struct iso_directory_record * isodir,struct iso_node * inop,struct iso_mnt * imp)604 cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop,
605     struct iso_mnt *imp)
606 {
607 	ISO_RRIP_ANALYZE analyze;
608 
609 	analyze.inop = inop;
610 	analyze.imp = imp;
611 	analyze.fields = ISO_SUSP_ATTR | ISO_SUSP_TSTAMP | ISO_SUSP_DEVICE;
612 
613 	return (cd9660_rrip_loop(isodir, &analyze, rrip_table_analyze));
614 }
615 
616 /*
617  * Get Alternate Name.
618  */
619 static RRIP_TABLE rrip_table_getname[] = {
620 	{ "NM", cd9660_rrip_altname,	cd9660_rrip_defname,
621 	    ISO_SUSP_ALTNAME },
622 	{ "CL", cd9660_rrip_pclink,	0,
623 	    ISO_SUSP_CLINK|ISO_SUSP_PLINK },
624 	{ "PL", cd9660_rrip_pclink,	0,
625 	    ISO_SUSP_CLINK|ISO_SUSP_PLINK },
626 	{ "RE", cd9660_rrip_reldir,	0,
627 	    ISO_SUSP_RELDIR },
628 	{ "RR", cd9660_rrip_idflag,	0,
629 	    ISO_SUSP_IDFLAG },
630 	{ "CE", cd9660_rrip_cont,	0,
631 	    ISO_SUSP_CONT },
632 	{ "ST", cd9660_rrip_stop,	0,
633 	    ISO_SUSP_STOP },
634 	{ "",	0,			0,
635 	    0 }
636 };
637 
638 int
cd9660_rrip_getname(struct iso_directory_record * isodir,char * outbuf,u_short * outlen,cdino_t * inump,struct iso_mnt * imp)639 cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf,
640     u_short *outlen, cdino_t *inump, struct iso_mnt *imp)
641 {
642 	ISO_RRIP_ANALYZE analyze;
643 	RRIP_TABLE *tab;
644 	u_char c;
645 
646 	analyze.outbuf = outbuf;
647 	analyze.outlen = outlen;
648 	analyze.maxlen = NAME_MAX;
649 	analyze.inump = inump;
650 	analyze.imp = imp;
651 	analyze.fields = ISO_SUSP_ALTNAME | ISO_SUSP_RELDIR | ISO_SUSP_CLINK |
652 	    ISO_SUSP_PLINK;
653 	*outlen = 0;
654 
655 	isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
656 	    imp->joliet_level, &c);
657 	tab = rrip_table_getname;
658 	if (c == 0 || c == 1) {
659 		cd9660_rrip_defname(isodir, &analyze);
660 
661 		analyze.fields &= ~ISO_SUSP_ALTNAME;
662 		tab++;
663 	}
664 
665 	return (cd9660_rrip_loop(isodir, &analyze, tab));
666 }
667 
668 /*
669  * Get Symbolic Link.
670  */
671 static RRIP_TABLE rrip_table_getsymname[] = {
672 	{ "SL", cd9660_rrip_slink,	0,	ISO_SUSP_SLINK },
673 	{ "RR", cd9660_rrip_idflag,	0,	ISO_SUSP_IDFLAG },
674 	{ "CE", cd9660_rrip_cont,	0,	ISO_SUSP_CONT },
675 	{ "ST", cd9660_rrip_stop,	0,	ISO_SUSP_STOP },
676 	{ "",	0,			0,	0 }
677 };
678 
679 int
cd9660_rrip_getsymname(struct iso_directory_record * isodir,char * outbuf,u_short * outlen,struct iso_mnt * imp)680 cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf,
681     u_short *outlen, struct iso_mnt *imp)
682 {
683 	ISO_RRIP_ANALYZE analyze;
684 
685 	analyze.outbuf = outbuf;
686 	analyze.outlen = outlen;
687 	*outlen = 0;
688 	analyze.maxlen = MAXPATHLEN;
689 	analyze.cont = 1;		/* don't start with a slash */
690 	analyze.imp = imp;
691 	analyze.fields = ISO_SUSP_SLINK;
692 
693 	return (cd9660_rrip_loop(isodir, &analyze, rrip_table_getsymname) &
694 	    ISO_SUSP_SLINK);
695 }
696 
697 static RRIP_TABLE rrip_table_extref[] = {
698 	{ "ER", cd9660_rrip_extref,	0,	ISO_SUSP_EXTREF },
699 	{ "CE", cd9660_rrip_cont,	0,	ISO_SUSP_CONT },
700 	{ "ST", cd9660_rrip_stop,	0,	ISO_SUSP_STOP },
701 	{ "",	0,			0,	0 }
702 };
703 
704 /*
705  * Check for Rock Ridge Extension and return offset of its fields.
706  * Note: We insist on the ER field.
707  */
708 int
cd9660_rrip_offset(struct iso_directory_record * isodir,struct iso_mnt * imp)709 cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp)
710 {
711 	ISO_RRIP_OFFSET *p;
712 	ISO_RRIP_ANALYZE analyze;
713 
714 	imp->rr_skip0 = 0;
715 	p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
716 	if (bcmp(p, "SP\7\1\276\357", 6)) {
717 		/* Maybe, it's a CDROM XA disc? */
718 		imp->rr_skip0 = 15;
719 		p = (ISO_RRIP_OFFSET *)((char *)p + 15);
720 		if (bcmp(p, "SP\7\1\276\357", 6))
721 			return (-1);
722 	}
723 
724 	analyze.imp = imp;
725 	analyze.fields = ISO_SUSP_EXTREF;
726 	if (!(cd9660_rrip_loop(isodir, &analyze, rrip_table_extref) &
727 	    ISO_SUSP_EXTREF))
728 		return (-1);
729 
730 	return (isonum_711(p->skip));
731 }
732