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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /* $NetBSD: cd9660_rrip.c,v 1.11 1994/12/24 15:30:10 cgd Exp $ */
23:
24: /*-
25: * Copyright (c) 1993, 1994
26: * The Regents of the University of California. All rights reserved.
27: *
28: * This code is derived from software contributed to Berkeley
29: * by Pace Willisson ([email protected]). The Rock Ridge Extension
30: * Support code is derived from software contributed to Berkeley
31: * by Atsushi Murai ([email protected]).
32: *
33: * Redistribution and use in source and binary forms, with or without
34: * modification, are permitted provided that the following conditions
35: * are met:
36: * 1. Redistributions of source code must retain the above copyright
37: * notice, this list of conditions and the following disclaimer.
38: * 2. Redistributions in binary form must reproduce the above copyright
39: * notice, this list of conditions and the following disclaimer in the
40: * documentation and/or other materials provided with the distribution.
41: * 3. All advertising materials mentioning features or use of this software
42: * must display the following acknowledgement:
43: * This product includes software developed by the University of
44: * California, Berkeley and its contributors.
45: * 4. Neither the name of the University nor the names of its contributors
46: * may be used to endorse or promote products derived from this software
47: * without specific prior written permission.
48: *
49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59: * SUCH DAMAGE.
60: *
61: * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
62:
63:
64:
65: * HISTORY
66: * 22-Jan-98 radar 1669467 - ISO 9660 CD support - jwc
67:
68: */
69:
70: #include <sys/param.h>
71: #include <sys/systm.h>
72: #include <sys/namei.h>
73: #include <sys/buf.h>
74: #include <sys/file.h>
75: #include <sys/vnode.h>
76: #include <sys/mount.h>
77: #include <sys/kernel.h>
78: #include <sys/stat.h>
79: #include <sys/types.h>
80:
81: #include <sys/time.h>
82:
83: #include <isofs/cd9660/iso.h>
84: #include <isofs/cd9660/cd9660_node.h>
85: #include <isofs/cd9660/cd9660_rrip.h>
86: #include <isofs/cd9660/iso_rrip.h>
87:
88: /*
89: * POSIX file attribute
90: */
91: static int
92: cd9660_rrip_attr(p,ana)
93: ISO_RRIP_ATTR *p;
94: ISO_RRIP_ANALYZE *ana;
95: {
96: ana->inop->inode.iso_mode = isonum_733(p->mode);
97: ana->inop->inode.iso_uid = isonum_733(p->uid);
98: ana->inop->inode.iso_gid = isonum_733(p->gid);
99: ana->inop->inode.iso_links = isonum_733(p->links);
100: ana->fields &= ~ISO_SUSP_ATTR;
101: return ISO_SUSP_ATTR;
102: }
103:
104: static void
105: cd9660_rrip_defattr(isodir,ana)
106: struct iso_directory_record *isodir;
107: ISO_RRIP_ANALYZE *ana;
108: {
109: /* But this is a required field! */
110: printf("RRIP without PX field?\n");
111: cd9660_defattr(isodir,ana->inop,NULL);
112: }
113:
114: /*
115: * Symbolic Links
116: */
117: static int
118: cd9660_rrip_slink(p,ana)
119: ISO_RRIP_SLINK *p;
120: ISO_RRIP_ANALYZE *ana;
121: {
122: register ISO_RRIP_SLINK_COMPONENT *pcomp;
123: register ISO_RRIP_SLINK_COMPONENT *pcompe;
124: int len, wlen, cont;
125: char *outbuf, *inbuf;
126:
127: pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
128: pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
129: len = *ana->outlen;
130: outbuf = ana->outbuf;
131: cont = ana->cont;
132:
133: /*
134: * Gathering a Symbolic name from each component with path
135: */
136: for (;
137: pcomp < pcompe;
138: pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
139: + isonum_711(pcomp->clen))) {
140:
141: if (!cont) {
142: if (len < ana->maxlen) {
143: len++;
144: *outbuf++ = '/';
145: }
146: }
147: cont = 0;
148:
149: inbuf = "..";
150: wlen = 0;
151:
152: switch (*pcomp->cflag) {
153:
154: case ISO_SUSP_CFLAG_CURRENT:
155: /* Inserting Current */
156: wlen = 1;
157: break;
158:
159: case ISO_SUSP_CFLAG_PARENT:
160: /* Inserting Parent */
161: wlen = 2;
162: break;
163:
164: case ISO_SUSP_CFLAG_ROOT:
165: /* Inserting slash for ROOT */
166: /* start over from beginning(?) */
167: outbuf -= len;
168: len = 0;
169: break;
170:
171: case ISO_SUSP_CFLAG_VOLROOT:
172: /* Inserting a mount point i.e. "/cdrom" */
173: /* same as above */
174: outbuf -= len;
175: len = 0;
176: inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
177: wlen = strlen(inbuf);
178: break;
179:
180: case ISO_SUSP_CFLAG_HOST:
181: /* Inserting hostname i.e. "kurt.tools.de" */
182: inbuf = hostname;
183: wlen = hostnamelen;
184: break;
185:
186: case ISO_SUSP_CFLAG_CONTINUE:
187: cont = 1;
188: /* fall thru */
189: case 0:
190: /* Inserting component */
191: wlen = isonum_711(pcomp->clen);
192: inbuf = pcomp->name;
193: break;
194: default:
195: printf("RRIP with incorrect flags?");
196: wlen = ana->maxlen + 1;
197: break;
198: }
199:
200: if (len + wlen > ana->maxlen) {
201: /* indicate error to caller */
202: ana->cont = 1;
203: ana->fields = 0;
204: ana->outbuf -= *ana->outlen;
205: *ana->outlen = 0;
206: return 0;
207: }
208:
209: bcopy(inbuf,outbuf,wlen);
210: outbuf += wlen;
211: len += wlen;
212:
213: }
214: ana->outbuf = outbuf;
215: *ana->outlen = len;
216: ana->cont = cont;
217:
218: if (!isonum_711(p->flags)) {
219: ana->fields &= ~ISO_SUSP_SLINK;
220: return ISO_SUSP_SLINK;
221: }
222: return 0;
223: }
224:
225: /*
226: * Alternate name
227: */
228: static int
229: cd9660_rrip_altname(p,ana)
230: ISO_RRIP_ALTNAME *p;
231: ISO_RRIP_ANALYZE *ana;
232: {
233: char *inbuf;
234: int wlen;
235: int cont;
236:
237: inbuf = "..";
238: wlen = 0;
239: cont = 0;
240:
241: switch (*p->flags) {
242: case ISO_SUSP_CFLAG_CURRENT:
243: /* Inserting Current */
244: wlen = 1;
245: break;
246:
247: case ISO_SUSP_CFLAG_PARENT:
248: /* Inserting Parent */
249: wlen = 2;
250: break;
251:
252: case ISO_SUSP_CFLAG_HOST:
253: /* Inserting hostname i.e. "kurt.tools.de" */
254: inbuf = hostname;
255: wlen = hostnamelen;
256: break;
257:
258: case ISO_SUSP_CFLAG_CONTINUE:
259: cont = 1;
260: /* fall thru */
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: bcopy(inbuf,ana->outbuf,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
292: cd9660_rrip_defname(isodir,ana)
293: struct iso_directory_record *isodir;
294: ISO_RRIP_ANALYZE *ana;
295: {
296: strcpy(ana->outbuf,"..");
297: switch (*isodir->name) {
298: default:
299: isofntrans(isodir->name,isonum_711(isodir->name_len),
300: ana->outbuf,ana->outlen,
301: 1,isonum_711(isodir->flags) & associatedBit);
302: break;
303: case 0:
304: *ana->outlen = 1;
305: break;
306: case 1:
307: *ana->outlen = 2;
308: break;
309: }
310: }
311:
312: /*
313: * Parent or Child Link
314: */
315: static int
316: cd9660_rrip_pclink(p,ana)
317: ISO_RRIP_CLINK *p;
318: ISO_RRIP_ANALYZE *ana;
319: {
320: *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
321: ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
322: return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
323: }
324:
325: /*
326: * Relocated directory
327: */
328: static int
329: cd9660_rrip_reldir(p,ana)
330: ISO_RRIP_RELDIR *p;
331: ISO_RRIP_ANALYZE *ana;
332: {
333: /* special hack to make caller aware of RE field */
334: *ana->outlen = 0;
335: ana->fields = 0;
336: return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
337: }
338:
339: static int
340: cd9660_rrip_tstamp(p,ana)
341: ISO_RRIP_TSTAMP *p;
342: ISO_RRIP_ANALYZE *ana;
343: {
344: u_char *ptime;
345:
346: ptime = p->time;
347:
348: /* Check a format of time stamp (7bytes/17bytes) */
349: if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
350: if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
351: ptime += 7;
352:
353: if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
354: cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime);
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: ptime += 7;
362: } else
363: ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
364:
365: if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
366: cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime);
367: else
368: ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
369:
370: } else {
371: if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
372: ptime += 17;
373:
374: if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
375: cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
376: ptime += 17;
377: } else
378: bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
379:
380: if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
381: cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
382: ptime += 17;
383: } else
384: ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
385:
386: if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
387: cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
388: else
389: ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
390:
391: }
392: ana->fields &= ~ISO_SUSP_TSTAMP;
393: return ISO_SUSP_TSTAMP;
394: }
395:
396: static void
397: cd9660_rrip_deftstamp(isodir,ana)
398: struct iso_directory_record *isodir;
399: ISO_RRIP_ANALYZE *ana;
400: {
401: cd9660_deftstamp(isodir,ana->inop,NULL);
402: }
403:
404: /*
405: * POSIX device modes
406: */
407: static int
408: cd9660_rrip_device(p,ana)
409: ISO_RRIP_DEVICE *p;
410: ISO_RRIP_ANALYZE *ana;
411: {
412: u_int high, low;
413:
414: high = isonum_733(p->dev_t_high);
415: low = isonum_733(p->dev_t_low);
416:
417: if (high == 0)
418: ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
419: else
420: ana->inop->inode.iso_rdev = makedev(high, minor(low));
421: ana->fields &= ~ISO_SUSP_DEVICE;
422: return ISO_SUSP_DEVICE;
423: }
424:
425: /*
426: * Flag indicating
427: */
428: static int
429: cd9660_rrip_idflag(p,ana)
430: ISO_RRIP_IDFLAG *p;
431: ISO_RRIP_ANALYZE *ana;
432: {
433: ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
434: /* special handling of RE field */
435: if (ana->fields&ISO_SUSP_RELDIR)
436: return cd9660_rrip_reldir(p,ana);
437:
438: return ISO_SUSP_IDFLAG;
439: }
440:
441: /*
442: * Continuation pointer
443: */
444: static int
445: cd9660_rrip_cont(p,ana)
446: ISO_RRIP_CONT *p;
447: ISO_RRIP_ANALYZE *ana;
448: {
449: ana->iso_ce_blk = isonum_733(p->location);
450: ana->iso_ce_off = isonum_733(p->offset);
451: ana->iso_ce_len = isonum_733(p->length);
452: return ISO_SUSP_CONT;
453: }
454:
455: /*
456: * System Use end
457: */
458: static int
459: cd9660_rrip_stop(p,ana)
460: ISO_SUSP_HEADER *p;
461: ISO_RRIP_ANALYZE *ana;
462: {
463: return ISO_SUSP_STOP;
464: }
465:
466: /*
467: * Extension reference
468: */
469: static int
470: cd9660_rrip_extref(p,ana)
471: ISO_RRIP_EXTREF *p;
472: ISO_RRIP_ANALYZE *ana;
473: {
474: if (isonum_711(p->len_id) != 10
475: || bcmp((char *)p + 8,"RRIP_1991A",10)
476: || isonum_711(p->version) != 1)
477: return 0;
478: ana->fields &= ~ISO_SUSP_EXTREF;
479: return ISO_SUSP_EXTREF;
480: }
481:
482: typedef struct {
483: char type[2];
484: int (*func)();
485: void (*func2)();
486: int result;
487: } RRIP_TABLE;
488:
489: static int
490: cd9660_rrip_loop(isodir,ana,table)
491: struct iso_directory_record *isodir;
492: ISO_RRIP_ANALYZE *ana;
493: RRIP_TABLE *table;
494: {
495: register RRIP_TABLE *ptable;
496: register ISO_SUSP_HEADER *phead;
497: register ISO_SUSP_HEADER *pend;
498: struct buf *bp = NULL;
499: char *pwhead;
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:
510: /* If it's not the '.' entry of the root dir obey SP field */
511: if (*isodir->name != 0
512: || isonum_733(isodir->extent) != ana->imp->root_extent)
513: pwhead += ana->imp->rr_skip;
514: else
515: pwhead += ana->imp->rr_skip0;
516:
517: phead = (ISO_SUSP_HEADER *)pwhead;
518: pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
519:
520: result = 0;
521: while (1) {
522: ana->iso_ce_len = 0;
523: /*
524: * Note: "pend" should be more than one SUSP header
525: */
526: while (pend >= phead + 1) {
527: if (isonum_711(phead->version) == 1) {
528: for (ptable = table; ptable->func; ptable++) {
529: if (*phead->type == *ptable->type
530: && phead->type[1] == ptable->type[1]) {
531: result |= ptable->func(phead,ana);
532: break;
533: }
534: }
535: if (!ana->fields)
536: break;
537: }
538: if (result&ISO_SUSP_STOP) {
539: result &= ~ISO_SUSP_STOP;
540: break;
541: }
542: /* plausibility check */
543: if (isonum_711(phead->length) < sizeof(*phead))
544: break;
545: /*
546: * move to next SUSP
547: * Hopefully this works with newer versions, too
548: */
549: phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
550: }
551:
552: if (ana->fields && ana->iso_ce_len) {
553: if (ana->iso_ce_blk >= ana->imp->volume_space_size
554: || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
555: || bread(ana->imp->im_devvp,
556: #if 1 // radar 1669467 - logical and physical blocksize are the same
557: ana->iso_ce_blk,
558: #else
559: ana->iso_ce_blk << (ana->imp->im_bshift - DEV_BSHIFT),
560: #endif // radar 1669467
561: ana->imp->logical_block_size, NOCRED, &bp))
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: static RRIP_TABLE rrip_table_analyze[] = {
586: { "PX", cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
587: { "TF", cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
588: { "PN", cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
589: { "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
590: { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
591: { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
592: { "", 0, 0, 0 }
593: };
594:
595: int
596: cd9660_rrip_analyze(isodir,inop,imp)
597: struct iso_directory_record *isodir;
598: struct iso_node *inop;
599: struct iso_mnt *imp;
600: {
601: ISO_RRIP_ANALYZE analyze;
602:
603: analyze.inop = inop;
604: analyze.imp = imp;
605: analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
606:
607: return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
608: }
609:
610: /*
611: * Get Alternate Name.
612: */
613: static RRIP_TABLE rrip_table_getname[] = {
614: { "NM", cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
615: { "CL", cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
616: { "PL", cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
617: { "RE", cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
618: { "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
619: { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
620: { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
621: { "", 0, 0, 0 }
622: };
623:
624: int
625: cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
626: struct iso_directory_record *isodir;
627: char *outbuf;
628: u_short *outlen;
629: ino_t *inump;
630: struct iso_mnt *imp;
631: {
632: ISO_RRIP_ANALYZE analyze;
633: RRIP_TABLE *tab;
634:
635: analyze.outbuf = outbuf;
636: analyze.outlen = outlen;
637: analyze.maxlen = NAME_MAX;
638: analyze.inump = inump;
639: analyze.imp = imp;
640: analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
641: *outlen = 0;
642:
643: tab = rrip_table_getname;
644: if (*isodir->name == 0
645: || *isodir->name == 1) {
646: cd9660_rrip_defname(isodir,&analyze);
647:
648: analyze.fields &= ~ISO_SUSP_ALTNAME;
649: tab++;
650: }
651:
652: return cd9660_rrip_loop(isodir,&analyze,tab);
653: }
654:
655: /*
656: * Get Symbolic Link.
657: */
658: static RRIP_TABLE rrip_table_getsymname[] = {
659: { "SL", cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
660: { "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
661: { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
662: { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
663: { "", 0, 0, 0 }
664: };
665:
666: int
667: cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
668: struct iso_directory_record *isodir;
669: char *outbuf;
670: u_short *outlen;
671: struct iso_mnt *imp;
672: {
673: ISO_RRIP_ANALYZE analyze;
674:
675: analyze.outbuf = outbuf;
676: analyze.outlen = outlen;
677: *outlen = 0;
678: analyze.maxlen = MAXPATHLEN;
679: analyze.cont = 1; /* don't start with a slash */
680: analyze.imp = imp;
681: analyze.fields = ISO_SUSP_SLINK;
682:
683: return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
684: }
685:
686: static RRIP_TABLE rrip_table_extref[] = {
687: { "ER", cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
688: { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT },
689: { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP },
690: { "", 0, 0, 0 }
691: };
692:
693: /*
694: * Check for Rock Ridge Extension and return offset of its fields.
695: * Note: We insist on the ER field.
696: */
697: int
698: cd9660_rrip_offset(isodir,imp)
699: struct iso_directory_record *isodir;
700: struct iso_mnt *imp;
701: {
702: ISO_RRIP_OFFSET *p;
703: ISO_RRIP_ANALYZE analyze;
704:
705: imp->rr_skip0 = 0;
706: p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
707: if (bcmp(p,"SP\7\1\276\357",6)) {
708: /* Maybe, it's a CDROM XA disc? */
709: imp->rr_skip0 = 15;
710: p = (ISO_RRIP_OFFSET *)((char *)p + 15);
711: if (bcmp(p,"SP\7\1\276\357",6))
712: return -1;
713: }
714:
715: analyze.imp = imp;
716: analyze.fields = ISO_SUSP_EXTREF;
717: if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
718: return -1;
719:
720: return isonum_711(p->skip);
721: }
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