2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1993, 1994
5 * The Regents of the University of California. All rights reserved.
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).
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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
36 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include <sys/param.h>
43 #include <sys/systm.h>
47 #include <sys/vnode.h>
48 #include <sys/mount.h>
49 #include <sys/kernel.h>
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>
56 typedef int rrt_func_t(void *, ISO_RRIP_ANALYZE *ana);
61 void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana);
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);
86 * POSIX file attribute
89 cd9660_rrip_attr(p,ana)
91 ISO_RRIP_ANALYZE *ana;
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;
102 cd9660_rrip_defattr(isodir,ana)
103 struct iso_directory_record *isodir;
104 ISO_RRIP_ANALYZE *ana;
106 /* But this is a required field! */
107 printf("RRIP without PX field?\n");
108 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
115 cd9660_rrip_slink(p,ana)
117 ISO_RRIP_ANALYZE *ana;
119 ISO_RRIP_SLINK_COMPONENT *pcomp;
120 ISO_RRIP_SLINK_COMPONENT *pcompe;
122 char *outbuf, *inbuf;
123 char hostbuf[MAXHOSTNAMELEN];
125 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
126 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
128 outbuf = ana->outbuf;
132 * Gathering a Symbolic name from each component with path
136 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
137 + isonum_711(pcomp->clen))) {
140 if (len < ana->maxlen) {
150 switch (*pcomp->cflag) {
152 case ISO_SUSP_CFLAG_CURRENT:
153 /* Inserting Current */
157 case ISO_SUSP_CFLAG_PARENT:
158 /* Inserting Parent */
162 case ISO_SUSP_CFLAG_ROOT:
163 /* Inserting slash for ROOT */
164 /* Double slash, nothing really to do here. */
167 case ISO_SUSP_CFLAG_VOLROOT:
168 /* Inserting a mount point i.e. "/cdrom" */
172 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
173 wlen = strlen(inbuf);
176 case ISO_SUSP_CFLAG_HOST:
177 /* Inserting hostname i.e. "kurt.tools.de" */
178 getcredhostname(curthread->td_ucred, hostbuf,
181 wlen = strlen(inbuf);
184 case ISO_SUSP_CFLAG_CONTINUE:
188 /* Inserting component */
189 wlen = isonum_711(pcomp->clen);
193 printf("RRIP with incorrect flags?");
194 wlen = ana->maxlen + 1;
198 if (len + wlen > ana->maxlen) {
199 /* indicate error to caller */
202 ana->outbuf -= *ana->outlen;
207 memcpy(outbuf, inbuf, wlen);
212 ana->outbuf = outbuf;
216 if (!isonum_711(p->flags)) {
217 ana->fields &= ~ISO_SUSP_SLINK;
218 return ISO_SUSP_SLINK;
227 cd9660_rrip_altname(p,ana)
229 ISO_RRIP_ANALYZE *ana;
234 char hostbuf[MAXHOSTNAMELEN];
241 case ISO_SUSP_CFLAG_CURRENT:
242 /* Inserting Current */
246 case ISO_SUSP_CFLAG_PARENT:
247 /* Inserting Parent */
251 case ISO_SUSP_CFLAG_HOST:
252 /* Inserting hostname i.e. "kurt.tools.de" */
253 getcredhostname(curthread->td_ucred, hostbuf, sizeof(hostbuf));
255 wlen = strlen(inbuf);
258 case ISO_SUSP_CFLAG_CONTINUE:
262 /* Inserting component */
263 wlen = isonum_711(p->h.length) - 5;
264 inbuf = (char *)p + 5;
268 printf("RRIP with incorrect NM flags?\n");
269 wlen = ana->maxlen + 1;
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;
281 memcpy(ana->outbuf, inbuf, wlen);
285 ana->fields &= ~ISO_SUSP_ALTNAME;
286 return ISO_SUSP_ALTNAME;
292 cd9660_rrip_defname(isodir,ana)
293 struct iso_directory_record *isodir;
294 ISO_RRIP_ANALYZE *ana;
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) {
307 /* outlen is 1 already */
308 strcpy(ana->outbuf,"..");
314 * Parent or Child Link
317 cd9660_rrip_pclink(p,ana)
319 ISO_RRIP_ANALYZE *ana;
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;
327 * Relocated directory
330 cd9660_rrip_reldir(p,ana)
332 ISO_RRIP_ANALYZE *ana;
334 /* special hack to make caller aware of RE field */
337 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
341 cd9660_rrip_tstamp(p,ana)
343 ISO_RRIP_ANALYZE *ana;
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)
354 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
355 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
359 memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
361 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
362 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
366 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
368 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
369 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
372 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
375 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
378 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
379 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
382 memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
384 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
385 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
388 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
390 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
391 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
393 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
396 ana->fields &= ~ISO_SUSP_TSTAMP;
397 return ISO_SUSP_TSTAMP;
401 cd9660_rrip_deftstamp(isodir,ana)
402 struct iso_directory_record *isodir;
403 ISO_RRIP_ANALYZE *ana;
405 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
412 cd9660_rrip_device(p,ana)
414 ISO_RRIP_ANALYZE *ana;
418 high = isonum_733(p->dev_t_high);
419 low = isonum_733(p->dev_t_low);
422 ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
424 ana->inop->inode.iso_rdev = makedev(high, minor(low));
425 ana->fields &= ~ISO_SUSP_DEVICE;
426 return ISO_SUSP_DEVICE;
433 cd9660_rrip_idflag(p,ana)
435 ISO_RRIP_ANALYZE *ana;
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);
442 return ISO_SUSP_IDFLAG;
446 * Continuation pointer
449 cd9660_rrip_cont(p,ana)
451 ISO_RRIP_ANALYZE *ana;
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;
463 cd9660_rrip_stop(p,ana)
465 ISO_RRIP_ANALYZE *ana;
467 return ISO_SUSP_STOP;
471 * Extension reference
474 cd9660_rrip_extref(p,ana)
476 ISO_RRIP_ANALYZE *ana;
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)
486 ana->fields &= ~ISO_SUSP_EXTREF;
487 return ISO_SUSP_EXTREF;
491 cd9660_rrip_loop(isodir,ana,table)
492 struct iso_directory_record *isodir;
493 ISO_RRIP_ANALYZE *ana;
497 ISO_SUSP_HEADER *phead;
498 ISO_SUSP_HEADER *pend;
499 struct buf *bp = NULL;
505 * Note: If name length is odd,
506 * it will be padding 1 byte after the name
508 pwhead = isodir->name + isonum_711(isodir->name_len);
509 if (!(isonum_711(isodir->name_len)&1))
511 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
512 ana->imp->im_flags, ana->imp->im_d2l);
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, NOCRED, &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, NULL, imp->im_flags, imp->im_d2l);
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);