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dhcpcd: 02-dump is no longer supplied
[dragonfly.git] / sys / vfs / isofs / cd9660 / cd9660_rrip.c
blob2281a94ca4f051546393890ff8c0cabe40808b70
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 #include <sys/malloc.h>
45
46 #include "iso.h"
47 #include "cd9660_node.h"
48 #include "cd9660_rrip.h"
49 #include "iso_rrip.h"
50
51 #include <sys/buf2.h>
52
53 typedef int rrt_func_t(void *, ISO_RRIP_ANALYZE *ana);
54
55 typedef struct {
56 char type[2];
57 rrt_func_t *func;
58 void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana);
59 int result;
60 } RRIP_TABLE;
61
62 static int cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana);
63 static int cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana);
64 static int cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana);
65 static void cd9660_rrip_defattr(struct iso_directory_record *isodir,
66 ISO_RRIP_ANALYZE *ana);
67 static void cd9660_rrip_defname(struct iso_directory_record *isodir,
68 ISO_RRIP_ANALYZE *ana);
69 static void cd9660_rrip_deftstamp(struct iso_directory_record *isodir,
70 ISO_RRIP_ANALYZE *ana);
71 static int cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana);
72 static int cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana);
73 static int cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana);
74 static int cd9660_rrip_loop(struct iso_directory_record *isodir,
75 ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table);
76 static int cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana);
77 static int cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana);
78 static int cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana);
79 static int cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana);
80 static int cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana);
81
82 /*
83 * POSIX file attribute
84 */
85 static int
86 cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana)
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
97 cd9660_rrip_defattr(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
98 {
99 /* But this is a required field! */
100 kprintf("RRIP without PX field?\n");
101 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
102 }
103
104 /*
105 * Symbolic Links
106 */
107 static int
108 cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana)
109 {
110 ISO_RRIP_SLINK_COMPONENT *pcomp;
111 ISO_RRIP_SLINK_COMPONENT *pcompe;
112 int error, len, wlen, cont;
113 char *outbuf, *inbuf, *freebuf;
114
115 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
116 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
117 len = *ana->outlen;
118 outbuf = ana->outbuf;
119 cont = ana->cont;
120 freebuf = NULL;
121
122 /*
123 * Gathering a Symbolic name from each component with path
124 */
125 for (;
126 pcomp < pcompe;
127 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
128 + isonum_711(pcomp->clen))) {
129
130 if (!cont) {
131 if (len < ana->maxlen) {
132 len++;
133 *outbuf++ = '/';
134 }
135 }
136 cont = 0;
137
138 inbuf = "..";
139 wlen = 0;
140
141 switch (*pcomp->cflag) {
142
143 case ISO_SUSP_CFLAG_CURRENT:
144 /* Inserting Current */
145 wlen = 1;
146 break;
147
148 case ISO_SUSP_CFLAG_PARENT:
149 /* Inserting Parent */
150 wlen = 2;
151 break;
152
153 case ISO_SUSP_CFLAG_ROOT:
154 /* Inserting slash for ROOT */
155 /* start over from beginning(?) */
156 outbuf -= len;
157 len = 0;
158 break;
159
160 case ISO_SUSP_CFLAG_VOLROOT:
161 /* Inserting a mount point i.e. "/cdrom" */
162 /* same as above */
163 outbuf -= len;
164 len = 0;
165 error = cache_fullpath(NULL, &ana->imp->im_mountp->mnt_ncmountpt, NULL,
166 &inbuf, &freebuf, 0);
167 if (error)
168 goto bad;
169 wlen = strlen(inbuf);
170 break;
171
172 case ISO_SUSP_CFLAG_HOST:
173 /* Inserting hostname i.e. "kurt.tools.de" */
174 inbuf = hostname;
175 wlen = strlen(hostname);
176 break;
177
178 case ISO_SUSP_CFLAG_CONTINUE:
179 cont = 1;
180 /* FALLTHROUGH */
181 case 0:
182 /* Inserting component */
183 wlen = isonum_711(pcomp->clen);
184 inbuf = pcomp->name;
185 break;
186 default:
187 kprintf("RRIP with incorrect flags?");
188 wlen = ana->maxlen + 1;
189 break;
190 }
191
192 if (len + wlen > ana->maxlen)
193 goto bad;
194
195 bcopy(inbuf,outbuf,wlen);
196 outbuf += wlen;
197 len += wlen;
198
199 if (freebuf != NULL) {
200 kfree(freebuf, M_TEMP);
201 freebuf = NULL;
202 }
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 bad:
215 if (freebuf != NULL)
216 kfree(freebuf, M_TEMP);
217 ana->cont = 1;
218 ana->fields = 0;
219 ana->outbuf -= *ana->outlen;
220 *ana->outlen = 0;
221 return 0;
222 }
223
224 /*
225 * Alternate name
226 */
227 static int
228 cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana)
229 {
230 char *inbuf;
231 int wlen;
232 int cont;
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 inbuf = hostname;
252 wlen = strlen(hostname);
253 break;
254
255 case ISO_SUSP_CFLAG_CONTINUE:
256 cont = 1;
257 /* FALLTHROUGH */
258 case 0:
259 /* Inserting component */
260 wlen = isonum_711(p->h.length) - 5;
261 inbuf = (char *)p + 5;
262 break;
263
264 default:
265 kprintf("RRIP with incorrect NM flags?\n");
266 wlen = ana->maxlen + 1;
267 break;
268 }
269
270 if ((*ana->outlen += wlen) > ana->maxlen) {
271 /* treat as no name field */
272 ana->fields &= ~ISO_SUSP_ALTNAME;
273 ana->outbuf -= *ana->outlen - wlen;
274 *ana->outlen = 0;
275 return 0;
276 }
277
278 bcopy(inbuf,ana->outbuf,wlen);
279 ana->outbuf += wlen;
280
281 if (!cont) {
282 ana->fields &= ~ISO_SUSP_ALTNAME;
283 return ISO_SUSP_ALTNAME;
284 }
285 return 0;
286 }
287
288 static void
289 cd9660_rrip_defname(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
290 {
291 isofntrans(isodir->name,isonum_711(isodir->name_len),
292 ana->outbuf,ana->outlen,
293 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level,
294 ana->imp->im_flags, ana->imp->im_d2l);
295 switch (*ana->outbuf) {
296 default:
297 break;
298 case 1:
299 *ana->outlen = 2;
300 /* FALLTHROUGH */
301 case 0:
302 /* outlen is 1 already */
303 strcpy(ana->outbuf,"..");
304 break;
305 }
306 }
307
308 /*
309 * Parent or Child Link
310 */
311 static int
312 cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana)
313 {
314 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
315 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
316 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
317 }
318
319 /*
320 * Relocated directory
321 */
322 static int
323 cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana)
324 {
325 /* special hack to make caller aware of RE field */
326 *ana->outlen = 0;
327 ana->fields = 0;
328 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
329 }
330
331 static int
332 cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana)
333 {
334 u_char *ptime;
335
336 ptime = p->time;
337
338 /* Check a format of time stamp (7bytes/17bytes) */
339 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
340 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
341 ptime += 7;
342
343 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
344 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
345 ISO_FTYPE_RRIP);
346 ptime += 7;
347 } else
348 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
349
350 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
351 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
352 ISO_FTYPE_RRIP);
353 ptime += 7;
354 } else
355 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
356
357 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
358 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
359 ISO_FTYPE_RRIP);
360 else
361 ana->inop->inode.iso_ctime = 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,&ana->inop->inode.iso_mtime);
369 ptime += 17;
370 } else
371 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
372
373 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
374 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
375 ptime += 17;
376 } else
377 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
378
379 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
380 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
381 else
382 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
383
384 }
385 ana->fields &= ~ISO_SUSP_TSTAMP;
386 return ISO_SUSP_TSTAMP;
387 }
388
389 static void
390 cd9660_rrip_deftstamp(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana)
391 {
392 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
393 }
394
395 /*
396 * POSIX device modes
397 */
398 static int
399 cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana)
400 {
401 u_int high, low;
402
403 high = isonum_733(p->dev_t_high);
404 low = isonum_733(p->dev_t_low);
405
406 if (high == 0)
407 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low));
408 else
409 ana->inop->inode.iso_rdev = makeudev(high, uminor(low));
410 ana->fields &= ~ISO_SUSP_DEVICE;
411 return ISO_SUSP_DEVICE;
412 }
413
414 /*
415 * Flag indicating
416 */
417 static int
418 cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana)
419 {
420 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
421 /* special handling of RE field */
422 if (ana->fields&ISO_SUSP_RELDIR)
423 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
424
425 return ISO_SUSP_IDFLAG;
426 }
427
428 /*
429 * Continuation pointer
430 */
431 static int
432 cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana)
433 {
434 ana->iso_ce_blk = isonum_733(p->location);
435 ana->iso_ce_off = isonum_733(p->offset);
436 ana->iso_ce_len = isonum_733(p->length);
437 return ISO_SUSP_CONT;
438 }
439
440 /*
441 * System Use end
442 */
443 static int
444 cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana)
445 {
446 return ISO_SUSP_STOP;
447 }
448
449 /*
450 * Extension reference
451 */
452 static int
453 cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana)
454 {
455 if (isonum_711(p->len_id) != 10
456 || bcmp((char *)p + 8,"RRIP_1991A",10)
457 || isonum_711(p->version) != 1)
458 return 0;
459 ana->fields &= ~ISO_SUSP_EXTREF;
460 return ISO_SUSP_EXTREF;
461 }
462
463 static int
464 cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana,
465 RRIP_TABLE *table)
466 {
467 RRIP_TABLE *ptable;
468 ISO_SUSP_HEADER *phead;
469 ISO_SUSP_HEADER *pend;
470 struct buf *bp = NULL;
471 char *pwhead;
472 u_short c;
473 int result;
474
475 /*
476 * Note: If name length is odd,
477 * it will be padding 1 byte after the name
478 */
479 pwhead = isodir->name + isonum_711(isodir->name_len);
480 if (!(isonum_711(isodir->name_len)&1))
481 pwhead++;
482 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
483 ana->imp->im_flags, ana->imp->im_d2l);
484
485 /* If it's not the '.' entry of the root dir obey SP field */
486 if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent)
487 pwhead += ana->imp->rr_skip;
488 else
489 pwhead += ana->imp->rr_skip0;
490
491 phead = (ISO_SUSP_HEADER *)pwhead;
492 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
493
494 result = 0;
495 while (1) {
496 ana->iso_ce_len = 0;
497 /*
498 * Note: "pend" should be more than one SUSP header
499 */
500 while (pend >= phead + 1) {
501 if (isonum_711(phead->version) == 1) {
502 for (ptable = table; ptable->func; ptable++) {
503 if (*phead->type == *ptable->type
504 && phead->type[1] == ptable->type[1]) {
505 result |= ptable->func(phead,ana);
506 break;
507 }
508 }
509 if (!ana->fields)
510 break;
511 }
512 if (result&ISO_SUSP_STOP) {
513 result &= ~ISO_SUSP_STOP;
514 break;
515 }
516 /* plausibility check */
517 if (isonum_711(phead->length) < sizeof(*phead))
518 break;
519 /*
520 * move to next SUSP
521 * Hopefully this works with newer versions, too
522 */
523 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
524 }
525
526 if (ana->fields && ana->iso_ce_len) {
527 if (ana->iso_ce_blk >= ana->imp->volume_space_size
528 || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
529 || bread(ana->imp->im_devvp,
530 lblktooff(ana->imp, ana->iso_ce_blk),
531 ana->imp->logical_block_size, &bp))
532 /* what to do now? */
533 break;
534 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
535 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
536 } else
537 break;
538 }
539 if (bp)
540 brelse(bp);
541 /*
542 * If we don't find the Basic SUSP stuffs, just set default value
543 * (attribute/time stamp)
544 */
545 for (ptable = table; ptable->func2; ptable++)
546 if (!(ptable->result&result))
547 ptable->func2(isodir,ana);
548
549 return result;
550 }
551
552 /*
553 * Get Attributes.
554 */
555 /*
556 * XXX the casts are bogus but will do for now.
557 */
558 #define BC (rrt_func_t *)
559 static RRIP_TABLE rrip_table_analyze[] = {
560 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
561 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
562 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
563 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
564 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
565 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
566 { "", 0, 0, 0 }
567 };
568
569 int
570 cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop,
571 struct iso_mnt *imp)
572 {
573 ISO_RRIP_ANALYZE analyze;
574
575 analyze.inop = inop;
576 analyze.imp = imp;
577 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
578
579 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
580 }
581
582 /*
583 * Get Alternate Name.
584 */
585 static RRIP_TABLE rrip_table_getname[] = {
586 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
587 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
588 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
589 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
590 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
591 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
592 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
593 { "", 0, 0, 0 }
594 };
595
596 int
597 cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf,
598 u_short *outlen, ino_t *inump, struct iso_mnt *imp)
599 {
600 ISO_RRIP_ANALYZE analyze;
601 RRIP_TABLE *tab;
602 u_short c;
603
604 analyze.outbuf = outbuf;
605 analyze.outlen = outlen;
606 analyze.maxlen = NAME_MAX;
607 analyze.inump = inump;
608 analyze.imp = imp;
609 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
610 *outlen = 0;
611
612 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
613 imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l);
614 tab = rrip_table_getname;
615 if (c == 0 || c == 1) {
616 cd9660_rrip_defname(isodir,&analyze);
617
618 analyze.fields &= ~ISO_SUSP_ALTNAME;
619 tab++;
620 }
621
622 return cd9660_rrip_loop(isodir,&analyze,tab);
623 }
624
625 /*
626 * Get Symbolic Link.
627 */
628 static RRIP_TABLE rrip_table_getsymname[] = {
629 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
630 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
631 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
632 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
633 { "", 0, 0, 0 }
634 };
635
636 int
637 cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf,
638 u_short *outlen, struct iso_mnt *imp)
639 {
640 ISO_RRIP_ANALYZE analyze;
641
642 analyze.outbuf = outbuf;
643 analyze.outlen = outlen;
644 *outlen = 0;
645 analyze.maxlen = MAXPATHLEN;
646 analyze.cont = 1; /* don't start with a slash */
647 analyze.imp = imp;
648 analyze.fields = ISO_SUSP_SLINK;
649
650 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
651 }
652
653 static RRIP_TABLE rrip_table_extref[] = {
654 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
655 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
656 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
657 { "", 0, 0, 0 }
658 };
659
660 /*
661 * Check for Rock Ridge Extension and return offset of its fields.
662 * Note: We insist on the ER field.
663 */
664 int
665 cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp)
666 {
667 ISO_RRIP_OFFSET *p;
668 ISO_RRIP_ANALYZE analyze;
669
670 imp->rr_skip0 = 0;
671 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
672 if (bcmp(p,"SP\7\1\276\357",6)) {
673 /* Maybe, it's a CDROM XA disc? */
674 imp->rr_skip0 = 15;
675 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
676 if (bcmp(p,"SP\7\1\276\357",6))
677 return -1;
678 }
679
680 analyze.imp = imp;
681 analyze.fields = ISO_SUSP_EXTREF;
682 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
683 return -1;
684
685 return isonum_711(p->skip);
686 }
DragonFly BSD