2 * Copyright (c) 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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).
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
39 * $FreeBSD: src/sys/isofs/cd9660/cd9660_rrip.c,v 1.17 1999/08/28 00:46:06 peter Exp $
40 * $DragonFly: src/sys/vfs/isofs/cd9660/cd9660_rrip.c,v 1.5 2003/08/07 21:17:41 dillon Exp $
43 #include <sys/param.h>
44 #include <sys/systm.h>
46 #include <sys/vnode.h>
47 #include <sys/mount.h>
48 #include <sys/kernel.h>
51 #include "cd9660_node.h"
52 #include "cd9660_rrip.h"
55 typedef int rrt_func_t __P((void *, ISO_RRIP_ANALYZE *ana));
60 void (*func2) __P((struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana));
64 static int cd9660_rrip_altname __P((ISO_RRIP_ALTNAME *p,
65 ISO_RRIP_ANALYZE *ana));
66 static int cd9660_rrip_attr __P((ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana));
67 static int cd9660_rrip_cont __P((ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana));
68 static void cd9660_rrip_defattr __P((struct iso_directory_record *isodir,
69 ISO_RRIP_ANALYZE *ana));
70 static void cd9660_rrip_defname __P((struct iso_directory_record *isodir,
71 ISO_RRIP_ANALYZE *ana));
72 static void cd9660_rrip_deftstamp __P((struct iso_directory_record *isodir,
73 ISO_RRIP_ANALYZE *ana));
74 static int cd9660_rrip_device __P((ISO_RRIP_DEVICE *p,
75 ISO_RRIP_ANALYZE *ana));
76 static int cd9660_rrip_extref __P((ISO_RRIP_EXTREF *p,
77 ISO_RRIP_ANALYZE *ana));
78 static int cd9660_rrip_idflag __P((ISO_RRIP_IDFLAG *p,
79 ISO_RRIP_ANALYZE *ana));
80 static int cd9660_rrip_loop __P((struct iso_directory_record *isodir,
81 ISO_RRIP_ANALYZE *ana,
83 static int cd9660_rrip_pclink __P((ISO_RRIP_CLINK *p,
84 ISO_RRIP_ANALYZE *ana));
85 static int cd9660_rrip_reldir __P((ISO_RRIP_RELDIR *p,
86 ISO_RRIP_ANALYZE *ana));
87 static int cd9660_rrip_slink __P((ISO_RRIP_SLINK *p,
88 ISO_RRIP_ANALYZE *ana));
89 static int cd9660_rrip_stop __P((ISO_SUSP_HEADER *p,
90 ISO_RRIP_ANALYZE *ana));
91 static int cd9660_rrip_tstamp __P((ISO_RRIP_TSTAMP *p,
92 ISO_RRIP_ANALYZE *ana));
95 * POSIX file attribute
98 cd9660_rrip_attr(p,ana)
100 ISO_RRIP_ANALYZE *ana;
102 ana->inop->inode.iso_mode = isonum_733(p->mode);
103 ana->inop->inode.iso_uid = isonum_733(p->uid);
104 ana->inop->inode.iso_gid = isonum_733(p->gid);
105 ana->inop->inode.iso_links = isonum_733(p->links);
106 ana->fields &= ~ISO_SUSP_ATTR;
107 return ISO_SUSP_ATTR;
111 cd9660_rrip_defattr(isodir,ana)
112 struct iso_directory_record *isodir;
113 ISO_RRIP_ANALYZE *ana;
115 /* But this is a required field! */
116 printf("RRIP without PX field?\n");
117 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
124 cd9660_rrip_slink(p,ana)
126 ISO_RRIP_ANALYZE *ana;
128 ISO_RRIP_SLINK_COMPONENT *pcomp;
129 ISO_RRIP_SLINK_COMPONENT *pcompe;
131 char *outbuf, *inbuf;
133 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
134 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
136 outbuf = ana->outbuf;
140 * Gathering a Symbolic name from each component with path
144 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
145 + isonum_711(pcomp->clen))) {
148 if (len < ana->maxlen) {
158 switch (*pcomp->cflag) {
160 case ISO_SUSP_CFLAG_CURRENT:
161 /* Inserting Current */
165 case ISO_SUSP_CFLAG_PARENT:
166 /* Inserting Parent */
170 case ISO_SUSP_CFLAG_ROOT:
171 /* Inserting slash for ROOT */
172 /* start over from beginning(?) */
177 case ISO_SUSP_CFLAG_VOLROOT:
178 /* Inserting a mount point i.e. "/cdrom" */
182 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
183 wlen = strlen(inbuf);
186 case ISO_SUSP_CFLAG_HOST:
187 /* Inserting hostname i.e. "kurt.tools.de" */
189 wlen = strlen(hostname);
192 case ISO_SUSP_CFLAG_CONTINUE:
196 /* Inserting component */
197 wlen = isonum_711(pcomp->clen);
201 printf("RRIP with incorrect flags?");
202 wlen = ana->maxlen + 1;
206 if (len + wlen > ana->maxlen) {
207 /* indicate error to caller */
210 ana->outbuf -= *ana->outlen;
215 bcopy(inbuf,outbuf,wlen);
220 ana->outbuf = outbuf;
224 if (!isonum_711(p->flags)) {
225 ana->fields &= ~ISO_SUSP_SLINK;
226 return ISO_SUSP_SLINK;
235 cd9660_rrip_altname(p,ana)
237 ISO_RRIP_ANALYZE *ana;
248 case ISO_SUSP_CFLAG_CURRENT:
249 /* Inserting Current */
253 case ISO_SUSP_CFLAG_PARENT:
254 /* Inserting Parent */
258 case ISO_SUSP_CFLAG_HOST:
259 /* Inserting hostname i.e. "kurt.tools.de" */
261 wlen = strlen(hostname);
264 case ISO_SUSP_CFLAG_CONTINUE:
268 /* Inserting component */
269 wlen = isonum_711(p->h.length) - 5;
270 inbuf = (char *)p + 5;
274 printf("RRIP with incorrect NM flags?\n");
275 wlen = ana->maxlen + 1;
279 if ((*ana->outlen += wlen) > ana->maxlen) {
280 /* treat as no name field */
281 ana->fields &= ~ISO_SUSP_ALTNAME;
282 ana->outbuf -= *ana->outlen - wlen;
287 bcopy(inbuf,ana->outbuf,wlen);
291 ana->fields &= ~ISO_SUSP_ALTNAME;
292 return ISO_SUSP_ALTNAME;
298 cd9660_rrip_defname(isodir,ana)
299 struct iso_directory_record *isodir;
300 ISO_RRIP_ANALYZE *ana;
302 isofntrans(isodir->name,isonum_711(isodir->name_len),
303 ana->outbuf,ana->outlen,
304 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level);
305 switch (*ana->outbuf) {
312 /* outlen is 1 already */
313 strcpy(ana->outbuf,"..");
319 * Parent or Child Link
322 cd9660_rrip_pclink(p,ana)
324 ISO_RRIP_ANALYZE *ana;
326 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
327 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
328 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
332 * Relocated directory
335 cd9660_rrip_reldir(p,ana)
337 ISO_RRIP_ANALYZE *ana;
339 /* special hack to make caller aware of RE field */
342 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
346 cd9660_rrip_tstamp(p,ana)
348 ISO_RRIP_ANALYZE *ana;
354 /* Check a format of time stamp (7bytes/17bytes) */
355 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
356 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
359 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
360 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
364 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
366 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
367 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
371 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
373 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
374 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
377 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
380 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
383 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
384 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
387 bzero(&ana->inop->inode.iso_mtime,sizeof(struct timespec));
389 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
390 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
393 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
395 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
396 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
398 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
401 ana->fields &= ~ISO_SUSP_TSTAMP;
402 return ISO_SUSP_TSTAMP;
406 cd9660_rrip_deftstamp(isodir,ana)
407 struct iso_directory_record *isodir;
408 ISO_RRIP_ANALYZE *ana;
410 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
417 cd9660_rrip_device(p,ana)
419 ISO_RRIP_ANALYZE *ana;
423 high = isonum_733(p->dev_t_high);
424 low = isonum_733(p->dev_t_low);
427 ana->inop->inode.iso_rdev = makeudev(umajor(low), uminor(low));
429 ana->inop->inode.iso_rdev = makeudev(high, uminor(low));
430 ana->fields &= ~ISO_SUSP_DEVICE;
431 return ISO_SUSP_DEVICE;
438 cd9660_rrip_idflag(p,ana)
440 ISO_RRIP_ANALYZE *ana;
442 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
443 /* special handling of RE field */
444 if (ana->fields&ISO_SUSP_RELDIR)
445 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
447 return ISO_SUSP_IDFLAG;
451 * Continuation pointer
454 cd9660_rrip_cont(p,ana)
456 ISO_RRIP_ANALYZE *ana;
458 ana->iso_ce_blk = isonum_733(p->location);
459 ana->iso_ce_off = isonum_733(p->offset);
460 ana->iso_ce_len = isonum_733(p->length);
461 return ISO_SUSP_CONT;
468 cd9660_rrip_stop(p,ana)
470 ISO_RRIP_ANALYZE *ana;
472 return ISO_SUSP_STOP;
476 * Extension reference
479 cd9660_rrip_extref(p,ana)
481 ISO_RRIP_ANALYZE *ana;
483 if (isonum_711(p->len_id) != 10
484 || bcmp((char *)p + 8,"RRIP_1991A",10)
485 || isonum_711(p->version) != 1)
487 ana->fields &= ~ISO_SUSP_EXTREF;
488 return ISO_SUSP_EXTREF;
492 cd9660_rrip_loop(isodir,ana,table)
493 struct iso_directory_record *isodir;
494 ISO_RRIP_ANALYZE *ana;
498 ISO_SUSP_HEADER *phead;
499 ISO_SUSP_HEADER *pend;
500 struct buf *bp = NULL;
506 * Note: If name length is odd,
507 * it will be padding 1 byte after the name
509 pwhead = isodir->name + isonum_711(isodir->name_len);
510 if (!(isonum_711(isodir->name_len)&1))
512 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c);
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;
518 pwhead += ana->imp->rr_skip0;
520 phead = (ISO_SUSP_HEADER *)pwhead;
521 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
527 * Note: "pend" should be more than one SUSP header
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);
541 if (result&ISO_SUSP_STOP) {
542 result &= ~ISO_SUSP_STOP;
545 /* plausibility check */
546 if (isonum_711(phead->length) < sizeof(*phead))
550 * Hopefully this works with newer versions, too
552 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
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 > ana->imp->logical_block_size
558 || bread(ana->imp->im_devvp,
560 (ana->imp->im_bshift - DEV_BSHIFT),
561 ana->imp->logical_block_size, &bp))
562 /* what to do now? */
564 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
565 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
572 * If we don't find the Basic SUSP stuffs, just set default value
573 * (attribute/time stamp)
575 for (ptable = table; ptable->func2; ptable++)
576 if (!(ptable->result&result))
577 ptable->func2(isodir,ana);
586 * XXX the casts are bogus but will do for now.
588 #define BC (rrt_func_t *)
589 static RRIP_TABLE rrip_table_analyze[] = {
590 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
591 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
592 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
593 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
594 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
595 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
600 cd9660_rrip_analyze(isodir,inop,imp)
601 struct iso_directory_record *isodir;
602 struct iso_node *inop;
605 ISO_RRIP_ANALYZE analyze;
609 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
611 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
615 * Get Alternate Name.
617 static RRIP_TABLE rrip_table_getname[] = {
618 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
619 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
620 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
621 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
622 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
623 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
624 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
629 cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
630 struct iso_directory_record *isodir;
636 ISO_RRIP_ANALYZE analyze;
640 analyze.outbuf = outbuf;
641 analyze.outlen = outlen;
642 analyze.maxlen = NAME_MAX;
643 analyze.inump = inump;
645 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
648 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
649 imp->joliet_level, &c);
650 tab = rrip_table_getname;
651 if (c == 0 || c == 1) {
652 cd9660_rrip_defname(isodir,&analyze);
654 analyze.fields &= ~ISO_SUSP_ALTNAME;
658 return cd9660_rrip_loop(isodir,&analyze,tab);
664 static RRIP_TABLE rrip_table_getsymname[] = {
665 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
666 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
667 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
668 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
673 cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
674 struct iso_directory_record *isodir;
679 ISO_RRIP_ANALYZE analyze;
681 analyze.outbuf = outbuf;
682 analyze.outlen = outlen;
684 analyze.maxlen = MAXPATHLEN;
685 analyze.cont = 1; /* don't start with a slash */
687 analyze.fields = ISO_SUSP_SLINK;
689 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
692 static RRIP_TABLE rrip_table_extref[] = {
693 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
694 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
695 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
700 * Check for Rock Ridge Extension and return offset of its fields.
701 * Note: We insist on the ER field.
704 cd9660_rrip_offset(isodir,imp)
705 struct iso_directory_record *isodir;
709 ISO_RRIP_ANALYZE analyze;
712 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
713 if (bcmp(p,"SP\7\1\276\357",6)) {
714 /* Maybe, it's a CDROM XA disc? */
716 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
717 if (bcmp(p,"SP\7\1\276\357",6))
722 analyze.fields = ISO_SUSP_EXTREF;
723 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
726 return isonum_711(p->skip);