1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley
8 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
9 * Support code is derived from software contributed to Berkeley
10 * by Atsushi Murai (amurai@spec.co.jp).
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
37 */
38
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD: stable/12/sys/fs/cd9660/cd9660_rrip.c 373168 2023-08-08 18:14:17Z emaste $");
41
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/bio.h>
45 #include <sys/buf.h>
46 #include <sys/jail.h>
47 #include <sys/vnode.h>
48 #include <sys/mount.h>
49 #include <sys/kernel.h>
50
51 #include <fs/cd9660/iso.h>
52 #include <fs/cd9660/cd9660_node.h>
53 #include <fs/cd9660/cd9660_rrip.h>
54 #include <fs/cd9660/iso_rrip.h>
55
56 typedef int rrt_func_t(void *, ISO_RRIP_ANALYZE *ana);
57
58 typedef struct {
59 char type[2];
60 rrt_func_t *func;
61 void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana);
62 int result;
63 } RRIP_TABLE;
64
65 static int cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana);
66 static int cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana);
67 static int cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana);
68 static void cd9660_rrip_defattr(struct iso_directory_record *isodir,
69 ISO_RRIP_ANALYZE *ana);
70 static void cd9660_rrip_defname(struct iso_directory_record *isodir,
71 ISO_RRIP_ANALYZE *ana);
72 static void cd9660_rrip_deftstamp(struct iso_directory_record *isodir,
73 ISO_RRIP_ANALYZE *ana);
74 static int cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana);
75 static int cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana);
76 static int cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana);
77 static int cd9660_rrip_loop(struct iso_directory_record *isodir,
78 ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table);
79 static int cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana);
80 static int cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana);
81 static int cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana);
82 static int cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana);
83 static int cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana);
84
85 /*
86 * POSIX file attribute
87 */
88 static int
cd9660_rrip_attr(p,ana)89 cd9660_rrip_attr(p,ana)
90 ISO_RRIP_ATTR *p;
91 ISO_RRIP_ANALYZE *ana;
92 {
93 ana->inop->inode.iso_mode = isonum_733(p->mode);
94 ana->inop->inode.iso_uid = isonum_733(p->uid);
95 ana->inop->inode.iso_gid = isonum_733(p->gid);
96 ana->inop->inode.iso_links = isonum_733(p->links);
97 ana->fields &= ~ISO_SUSP_ATTR;
98 return ISO_SUSP_ATTR;
99 }
100
101 static void
cd9660_rrip_defattr(isodir,ana)102 cd9660_rrip_defattr(isodir,ana)
103 struct iso_directory_record *isodir;
104 ISO_RRIP_ANALYZE *ana;
105 {
106 /* But this is a required field! */
107 printf("RRIP without PX field?\n");
108 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
109 }
110
111 /*
112 * Symbolic Links
113 */
114 static int
cd9660_rrip_slink(p,ana)115 cd9660_rrip_slink(p,ana)
116 ISO_RRIP_SLINK *p;
117 ISO_RRIP_ANALYZE *ana;
118 {
119 ISO_RRIP_SLINK_COMPONENT *pcomp;
120 ISO_RRIP_SLINK_COMPONENT *pcompe;
121 int len, wlen, cont;
122 char *outbuf, *inbuf;
123 char hostbuf[MAXHOSTNAMELEN];
124
125 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
126 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
127 len = *ana->outlen;
128 outbuf = ana->outbuf;
129 cont = ana->cont;
130
131 /*
132 * Gathering a Symbolic name from each component with path
133 */
134 for (;
135 pcomp < pcompe;
136 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
137 + isonum_711(pcomp->clen))) {
138
139 if (!cont) {
140 if (len < ana->maxlen) {
141 len++;
142 *outbuf++ = '/';
143 }
144 }
145 cont = 0;
146
147 inbuf = "..";
148 wlen = 0;
149
150 switch (*pcomp->cflag) {
151
152 case ISO_SUSP_CFLAG_CURRENT:
153 /* Inserting Current */
154 wlen = 1;
155 break;
156
157 case ISO_SUSP_CFLAG_PARENT:
158 /* Inserting Parent */
159 wlen = 2;
160 break;
161
162 case ISO_SUSP_CFLAG_ROOT:
163 /* Inserting slash for ROOT */
164 /* Double slash, nothing really to do here. */
165 break;
166
167 case ISO_SUSP_CFLAG_VOLROOT:
168 /* Inserting a mount point i.e. "/cdrom" */
169 /* same as above */
170 outbuf -= len;
171 len = 0;
172 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
173 wlen = strlen(inbuf);
174 break;
175
176 case ISO_SUSP_CFLAG_HOST:
177 /* Inserting hostname i.e. "kurt.tools.de" */
178 getcredhostname(curthread->td_ucred, hostbuf,
179 sizeof(hostbuf));
180 inbuf = hostbuf;
181 wlen = strlen(inbuf);
182 break;
183
184 case ISO_SUSP_CFLAG_CONTINUE:
185 cont = 1;
186 /* FALLTHROUGH */
187 case 0:
188 /* Inserting component */
189 wlen = isonum_711(pcomp->clen);
190 inbuf = pcomp->name;
191 break;
192 default:
193 printf("RRIP with incorrect flags?");
194 wlen = ana->maxlen + 1;
195 break;
196 }
197
198 if (len + wlen > ana->maxlen) {
199 /* indicate error to caller */
200 ana->cont = 1;
201 ana->fields = 0;
202 ana->outbuf -= *ana->outlen;
203 *ana->outlen = 0;
204 return 0;
205 }
206
207 memcpy(outbuf, inbuf, wlen);
208 outbuf += wlen;
209 len += wlen;
210
211 }
212 ana->outbuf = outbuf;
213 *ana->outlen = len;
214 ana->cont = cont;
215
216 if (!isonum_711(p->flags)) {
217 ana->fields &= ~ISO_SUSP_SLINK;
218 return ISO_SUSP_SLINK;
219 }
220 return 0;
221 }
222
223 /*
224 * Alternate name
225 */
226 static int
cd9660_rrip_altname(p,ana)227 cd9660_rrip_altname(p,ana)
228 ISO_RRIP_ALTNAME *p;
229 ISO_RRIP_ANALYZE *ana;
230 {
231 char *inbuf;
232 int wlen;
233 int cont;
234 char hostbuf[MAXHOSTNAMELEN];
235
236 inbuf = "..";
237 wlen = 0;
238 cont = 0;
239
240 switch (*p->flags) {
241 case ISO_SUSP_CFLAG_CURRENT:
242 /* Inserting Current */
243 wlen = 1;
244 break;
245
246 case ISO_SUSP_CFLAG_PARENT:
247 /* Inserting Parent */
248 wlen = 2;
249 break;
250
251 case ISO_SUSP_CFLAG_HOST:
252 /* Inserting hostname i.e. "kurt.tools.de" */
253 getcredhostname(curthread->td_ucred, hostbuf, sizeof(hostbuf));
254 inbuf = hostbuf;
255 wlen = strlen(inbuf);
256 break;
257
258 case ISO_SUSP_CFLAG_CONTINUE:
259 cont = 1;
260 /* FALLTHROUGH */
261 case 0:
262 /* Inserting component */
263 wlen = isonum_711(p->h.length) - 5;
264 inbuf = (char *)p + 5;
265 break;
266
267 default:
268 printf("RRIP with incorrect NM flags?\n");
269 wlen = ana->maxlen + 1;
270 break;
271 }
272
273 if ((*ana->outlen += wlen) > ana->maxlen) {
274 /* treat as no name field */
275 ana->fields &= ~ISO_SUSP_ALTNAME;
276 ana->outbuf -= *ana->outlen - wlen;
277 *ana->outlen = 0;
278 return 0;
279 }
280
281 memcpy(ana->outbuf, inbuf, wlen);
282 ana->outbuf += wlen;
283
284 if (!cont) {
285 ana->fields &= ~ISO_SUSP_ALTNAME;
286 return ISO_SUSP_ALTNAME;
287 }
288 return 0;
289 }
290
291 static void
cd9660_rrip_defname(isodir,ana)292 cd9660_rrip_defname(isodir,ana)
293 struct iso_directory_record *isodir;
294 ISO_RRIP_ANALYZE *ana;
295 {
296 isofntrans(isodir->name,isonum_711(isodir->name_len),
297 ana->outbuf,ana->outlen,
298 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level,
299 ana->imp->im_flags, ana->imp->im_d2l);
300 switch (*ana->outbuf) {
301 default:
302 break;
303 case 1:
304 *ana->outlen = 2;
305 /* FALLTHROUGH */
306 case 0:
307 /* outlen is 1 already */
308 strcpy(ana->outbuf,"..");
309 break;
310 }
311 }
312
313 /*
314 * Parent or Child Link
315 */
316 static int
cd9660_rrip_pclink(p,ana)317 cd9660_rrip_pclink(p,ana)
318 ISO_RRIP_CLINK *p;
319 ISO_RRIP_ANALYZE *ana;
320 {
321 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
322 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
323 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
324 }
325
326 /*
327 * Relocated directory
328 */
329 static int
cd9660_rrip_reldir(p,ana)330 cd9660_rrip_reldir(p,ana)
331 ISO_RRIP_RELDIR *p;
332 ISO_RRIP_ANALYZE *ana;
333 {
334 /* special hack to make caller aware of RE field */
335 *ana->outlen = 0;
336 ana->fields = 0;
337 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
338 }
339
340 static int
cd9660_rrip_tstamp(p,ana)341 cd9660_rrip_tstamp(p,ana)
342 ISO_RRIP_TSTAMP *p;
343 ISO_RRIP_ANALYZE *ana;
344 {
345 u_char *ptime;
346
347 ptime = p->time;
348
349 /* Check a format of time stamp (7bytes/17bytes) */
350 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
351 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
352 ptime += 7;
353
354 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
355 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
356 ISO_FTYPE_RRIP);
357 ptime += 7;
358 } else
359 memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
360
361 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
362 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
363 ISO_FTYPE_RRIP);
364 ptime += 7;
365 } else
366 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
367
368 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
369 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
370 ISO_FTYPE_RRIP);
371 else
372 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
373
374 } else {
375 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
376 ptime += 17;
377
378 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
379 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
380 ptime += 17;
381 } else
382 memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
383
384 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
385 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
386 ptime += 17;
387 } else
388 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
389
390 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
391 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
392 else
393 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
394
395 }
396 ana->fields &= ~ISO_SUSP_TSTAMP;
397 return ISO_SUSP_TSTAMP;
398 }
399
400 static void
cd9660_rrip_deftstamp(isodir,ana)401 cd9660_rrip_deftstamp(isodir,ana)
402 struct iso_directory_record *isodir;
403 ISO_RRIP_ANALYZE *ana;
404 {
405 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
406 }
407
408 /*
409 * POSIX device modes
410 */
411 static int
cd9660_rrip_device(p,ana)412 cd9660_rrip_device(p,ana)
413 ISO_RRIP_DEVICE *p;
414 ISO_RRIP_ANALYZE *ana;
415 {
416 u_int high, low;
417
418 high = isonum_733(p->dev_t_high);
419 low = isonum_733(p->dev_t_low);
420
421 if (high == 0)
422 ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
423 else
424 ana->inop->inode.iso_rdev = makedev(high, minor(low));
425 ana->fields &= ~ISO_SUSP_DEVICE;
426 return ISO_SUSP_DEVICE;
427 }
428
429 /*
430 * Flag indicating
431 */
432 static int
cd9660_rrip_idflag(p,ana)433 cd9660_rrip_idflag(p,ana)
434 ISO_RRIP_IDFLAG *p;
435 ISO_RRIP_ANALYZE *ana;
436 {
437 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
438 /* special handling of RE field */
439 if (ana->fields&ISO_SUSP_RELDIR)
440 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
441
442 return ISO_SUSP_IDFLAG;
443 }
444
445 /*
446 * Continuation pointer
447 */
448 static int
cd9660_rrip_cont(p,ana)449 cd9660_rrip_cont(p,ana)
450 ISO_RRIP_CONT *p;
451 ISO_RRIP_ANALYZE *ana;
452 {
453 ana->iso_ce_blk = isonum_733(p->location);
454 ana->iso_ce_off = isonum_733(p->offset);
455 ana->iso_ce_len = isonum_733(p->length);
456 return ISO_SUSP_CONT;
457 }
458
459 /*
460 * System Use end
461 */
462 static int
cd9660_rrip_stop(p,ana)463 cd9660_rrip_stop(p,ana)
464 ISO_SUSP_HEADER *p;
465 ISO_RRIP_ANALYZE *ana;
466 {
467 return ISO_SUSP_STOP;
468 }
469
470 /*
471 * Extension reference
472 */
473 static int
cd9660_rrip_extref(p,ana)474 cd9660_rrip_extref(p,ana)
475 ISO_RRIP_EXTREF *p;
476 ISO_RRIP_ANALYZE *ana;
477 {
478 if ( ! ((isonum_711(p->len_id) == 10
479 && bcmp((char *)p + 8,"RRIP_1991A",10) == 0)
480 || (isonum_711(p->len_id) == 10
481 && bcmp((char *)p + 8,"IEEE_P1282",10) == 0)
482 || (isonum_711(p->len_id) == 9
483 && bcmp((char *)p + 8,"IEEE_1282", 9) == 0))
484 || isonum_711(p->version) != 1)
485 return 0;
486 ana->fields &= ~ISO_SUSP_EXTREF;
487 return ISO_SUSP_EXTREF;
488 }
489
490 static int
cd9660_rrip_loop(isodir,ana,table)491 cd9660_rrip_loop(isodir,ana,table)
492 struct iso_directory_record *isodir;
493 ISO_RRIP_ANALYZE *ana;
494 RRIP_TABLE *table;
495 {
496 RRIP_TABLE *ptable;
497 ISO_SUSP_HEADER *phead;
498 ISO_SUSP_HEADER *pend;
499 struct buf *bp = NULL;
500 char *pwhead;
501 u_short c;
502 int result;
503
504 /*
505 * Note: If name length is odd,
506 * it will be padding 1 byte after the name
507 */
508 pwhead = isodir->name + isonum_711(isodir->name_len);
509 if (!(isonum_711(isodir->name_len)&1))
510 pwhead++;
511 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
512 ana->imp->im_flags, ana->imp->im_d2l);
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 >
558 ana->imp->logical_block_size)
559 break;
560 if (bp != NULL) {
561 brelse(bp);
562 bp = NULL;
563 }
564 if (bread(ana->imp->im_devvp,
565 ana->iso_ce_blk <<
566 (ana->imp->im_bshift - DEV_BSHIFT),
567 ana->imp->logical_block_size, NOCRED, &bp) != 0)
568 /* what to do now? */
569 break;
570 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
571 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
572 } else
573 break;
574 }
575 if (bp)
576 brelse(bp);
577 /*
578 * If we don't find the Basic SUSP stuffs, just set default value
579 * (attribute/time stamp)
580 */
581 for (ptable = table; ptable->func2; ptable++)
582 if (!(ptable->result&result))
583 ptable->func2(isodir,ana);
584
585 return result;
586 }
587
588 /*
589 * Get Attributes.
590 */
591 /*
592 * XXX the casts are bogus but will do for now.
593 */
594 #define BC (rrt_func_t *)
595 static RRIP_TABLE rrip_table_analyze[] = {
596 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
597 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
598 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
599 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
600 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
601 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
602 { "", 0, 0, 0 }
603 };
604
605 int
cd9660_rrip_analyze(isodir,inop,imp)606 cd9660_rrip_analyze(isodir,inop,imp)
607 struct iso_directory_record *isodir;
608 struct iso_node *inop;
609 struct iso_mnt *imp;
610 {
611 ISO_RRIP_ANALYZE analyze;
612
613 analyze.inop = inop;
614 analyze.imp = imp;
615 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
616
617 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
618 }
619
620 /*
621 * Get Alternate Name.
622 */
623 static RRIP_TABLE rrip_table_getname[] = {
624 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
625 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
626 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
627 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
628 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
629 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
630 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
631 { "", 0, 0, 0 }
632 };
633
634 int
cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)635 cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
636 struct iso_directory_record *isodir;
637 char *outbuf;
638 u_short *outlen;
639 cd_ino_t *inump;
640 struct iso_mnt *imp;
641 {
642 ISO_RRIP_ANALYZE analyze;
643 RRIP_TABLE *tab;
644 u_short 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|ISO_SUSP_PLINK;
652 *outlen = 0;
653
654 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
655 imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l);
656 tab = rrip_table_getname;
657 if (c == 0 || c == 1) {
658 cd9660_rrip_defname(isodir,&analyze);
659
660 analyze.fields &= ~ISO_SUSP_ALTNAME;
661 tab++;
662 }
663
664 return cd9660_rrip_loop(isodir,&analyze,tab);
665 }
666
667 /*
668 * Get Symbolic Link.
669 */
670 static RRIP_TABLE rrip_table_getsymname[] = {
671 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
672 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
673 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
674 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
675 { "", 0, 0, 0 }
676 };
677
678 int
cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)679 cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
680 struct iso_directory_record *isodir;
681 char *outbuf;
682 u_short *outlen;
683 struct iso_mnt *imp;
684 {
685 ISO_RRIP_ANALYZE analyze;
686
687 analyze.outbuf = outbuf;
688 analyze.outlen = outlen;
689 *outlen = 0;
690 analyze.maxlen = MAXPATHLEN;
691 analyze.cont = 1; /* don't start with a slash */
692 analyze.imp = imp;
693 analyze.fields = ISO_SUSP_SLINK;
694
695 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
696 }
697
698 static RRIP_TABLE rrip_table_extref[] = {
699 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
700 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
701 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
702 { "", 0, 0, 0 }
703 };
704
705 /*
706 * Check for Rock Ridge Extension and return offset of its fields.
707 * Note: We insist on the ER field.
708 */
709 int
cd9660_rrip_offset(isodir,imp)710 cd9660_rrip_offset(isodir,imp)
711 struct iso_directory_record *isodir;
712 struct iso_mnt *imp;
713 {
714 ISO_RRIP_OFFSET *p;
715 ISO_RRIP_ANALYZE analyze;
716
717 imp->rr_skip0 = 0;
718 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
719 if (bcmp(p,"SP\7\1\276\357",6)) {
720 /* Maybe, it's a CDROM XA disc? */
721 imp->rr_skip0 = 15;
722 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
723 if (bcmp(p,"SP\7\1\276\357",6))
724 return -1;
725 }
726
727 analyze.imp = imp;
728 analyze.fields = ISO_SUSP_EXTREF;
729 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
730 return -1;
731
732 return isonum_711(p->skip);
733 }
734