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))) {
139 if (len < ana->maxlen) {
149 switch (*pcomp->cflag) {
150 case ISO_SUSP_CFLAG_CURRENT:
151 /* Inserting Current */
155 case ISO_SUSP_CFLAG_PARENT:
156 /* Inserting Parent */
160 case ISO_SUSP_CFLAG_ROOT:
161 /* Inserting slash for ROOT */
162 /* Double slash, nothing really to do here. */
165 case ISO_SUSP_CFLAG_VOLROOT:
166 /* Inserting a mount point i.e. "/cdrom" */
170 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
171 wlen = strlen(inbuf);
174 case ISO_SUSP_CFLAG_HOST:
175 /* Inserting hostname i.e. "kurt.tools.de" */
176 getcredhostname(curthread->td_ucred, hostbuf,
179 wlen = strlen(inbuf);
182 case ISO_SUSP_CFLAG_CONTINUE:
186 /* Inserting component */
187 wlen = isonum_711(pcomp->clen);
191 printf("RRIP with incorrect flags?");
192 wlen = ana->maxlen + 1;
196 if (len + wlen > ana->maxlen) {
197 /* indicate error to caller */
200 ana->outbuf -= *ana->outlen;
205 memcpy(outbuf, inbuf, wlen);
209 ana->outbuf = outbuf;
213 if (!isonum_711(p->flags)) {
214 ana->fields &= ~ISO_SUSP_SLINK;
215 return ISO_SUSP_SLINK;
224 cd9660_rrip_altname(p,ana)
226 ISO_RRIP_ANALYZE *ana;
231 char hostbuf[MAXHOSTNAMELEN];
238 case ISO_SUSP_CFLAG_CURRENT:
239 /* Inserting Current */
243 case ISO_SUSP_CFLAG_PARENT:
244 /* Inserting Parent */
248 case ISO_SUSP_CFLAG_HOST:
249 /* Inserting hostname i.e. "kurt.tools.de" */
250 getcredhostname(curthread->td_ucred, hostbuf, sizeof(hostbuf));
252 wlen = strlen(inbuf);
255 case ISO_SUSP_CFLAG_CONTINUE:
259 /* Inserting component */
260 wlen = isonum_711(p->h.length) - 5;
261 inbuf = (char *)p + 5;
265 printf("RRIP with incorrect NM flags?\n");
266 wlen = ana->maxlen + 1;
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;
278 memcpy(ana->outbuf, inbuf, wlen);
282 ana->fields &= ~ISO_SUSP_ALTNAME;
283 return ISO_SUSP_ALTNAME;
289 cd9660_rrip_defname(isodir,ana)
290 struct iso_directory_record *isodir;
291 ISO_RRIP_ANALYZE *ana;
293 isofntrans(isodir->name,isonum_711(isodir->name_len),
294 ana->outbuf,ana->outlen,
295 1,isonum_711(isodir->flags)&4, ana->imp->joliet_level,
296 ana->imp->im_flags, ana->imp->im_d2l);
297 switch (*ana->outbuf) {
304 /* outlen is 1 already */
305 strcpy(ana->outbuf,"..");
311 * Parent or Child Link
314 cd9660_rrip_pclink(p,ana)
316 ISO_RRIP_ANALYZE *ana;
318 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
319 ana->fields &= ~(ISO_SUSP_CLINK|ISO_SUSP_PLINK);
320 return *p->h.type == 'C' ? ISO_SUSP_CLINK : ISO_SUSP_PLINK;
324 * Relocated directory
327 cd9660_rrip_reldir(p,ana)
329 ISO_RRIP_ANALYZE *ana;
331 /* special hack to make caller aware of RE field */
334 return ISO_SUSP_RELDIR|ISO_SUSP_ALTNAME|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
338 cd9660_rrip_tstamp(p,ana)
340 ISO_RRIP_ANALYZE *ana;
346 /* Check a format of time stamp (7bytes/17bytes) */
347 if (!(*p->flags&ISO_SUSP_TSTAMP_FORM17)) {
348 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
351 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
352 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_mtime,
356 memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
358 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
359 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_atime,
363 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
365 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
366 cd9660_tstamp_conv7(ptime,&ana->inop->inode.iso_ctime,
369 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
372 if (*p->flags&ISO_SUSP_TSTAMP_CREAT)
375 if (*p->flags&ISO_SUSP_TSTAMP_MODIFY) {
376 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_mtime);
379 memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
381 if (*p->flags&ISO_SUSP_TSTAMP_ACCESS) {
382 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_atime);
385 ana->inop->inode.iso_atime = ana->inop->inode.iso_mtime;
387 if (*p->flags&ISO_SUSP_TSTAMP_ATTR)
388 cd9660_tstamp_conv17(ptime,&ana->inop->inode.iso_ctime);
390 ana->inop->inode.iso_ctime = ana->inop->inode.iso_mtime;
392 ana->fields &= ~ISO_SUSP_TSTAMP;
393 return ISO_SUSP_TSTAMP;
397 cd9660_rrip_deftstamp(isodir,ana)
398 struct iso_directory_record *isodir;
399 ISO_RRIP_ANALYZE *ana;
401 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
408 cd9660_rrip_device(p,ana)
410 ISO_RRIP_ANALYZE *ana;
414 high = isonum_733(p->dev_t_high);
415 low = isonum_733(p->dev_t_low);
418 ana->inop->inode.iso_rdev = makedev(major(low), minor(low));
420 ana->inop->inode.iso_rdev = makedev(high, minor(low));
421 ana->fields &= ~ISO_SUSP_DEVICE;
422 return ISO_SUSP_DEVICE;
429 cd9660_rrip_idflag(p,ana)
431 ISO_RRIP_ANALYZE *ana;
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(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
438 return ISO_SUSP_IDFLAG;
442 * Continuation pointer
445 cd9660_rrip_cont(p,ana)
447 ISO_RRIP_ANALYZE *ana;
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;
459 cd9660_rrip_stop(p,ana)
461 ISO_RRIP_ANALYZE *ana;
463 return ISO_SUSP_STOP;
467 * Extension reference
470 cd9660_rrip_extref(p,ana)
472 ISO_RRIP_ANALYZE *ana;
474 if ( ! ((isonum_711(p->len_id) == 10
475 && bcmp((char *)p + 8,"RRIP_1991A",10) == 0)
476 || (isonum_711(p->len_id) == 10
477 && bcmp((char *)p + 8,"IEEE_P1282",10) == 0)
478 || (isonum_711(p->len_id) == 9
479 && bcmp((char *)p + 8,"IEEE_1282", 9) == 0))
480 || isonum_711(p->version) != 1)
482 ana->fields &= ~ISO_SUSP_EXTREF;
483 return ISO_SUSP_EXTREF;
487 cd9660_rrip_loop(isodir,ana,table)
488 struct iso_directory_record *isodir;
489 ISO_RRIP_ANALYZE *ana;
493 ISO_SUSP_HEADER *phead;
494 ISO_SUSP_HEADER *pend;
495 struct buf *bp = NULL;
501 * Note: If name length is odd,
502 * it will be padding 1 byte after the name
504 pwhead = isodir->name + isonum_711(isodir->name_len);
505 if (!(isonum_711(isodir->name_len)&1))
507 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
508 ana->imp->im_flags, ana->imp->im_d2l);
510 /* If it's not the '.' entry of the root dir obey SP field */
511 if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent)
512 pwhead += ana->imp->rr_skip;
514 pwhead += ana->imp->rr_skip0;
516 phead = (ISO_SUSP_HEADER *)pwhead;
517 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
523 * Note: "pend" should be more than one SUSP header
525 while (pend >= phead + 1) {
526 if (isonum_711(phead->version) == 1) {
527 for (ptable = table; ptable->func; ptable++) {
528 if (*phead->type == *ptable->type
529 && phead->type[1] == ptable->type[1]) {
530 result |= ptable->func(phead,ana);
537 if (result&ISO_SUSP_STOP) {
538 result &= ~ISO_SUSP_STOP;
541 /* plausibility check */
542 if (isonum_711(phead->length) < sizeof(*phead))
546 * Hopefully this works with newer versions, too
548 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
551 if (ana->fields && ana->iso_ce_len) {
552 if (ana->iso_ce_blk >= ana->imp->volume_space_size
553 || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
554 || bread(ana->imp->im_devvp,
556 (ana->imp->im_bshift - DEV_BSHIFT),
557 ana->imp->logical_block_size, NOCRED, &bp))
558 /* what to do now? */
560 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
561 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
568 * If we don't find the Basic SUSP stuffs, just set default value
569 * (attribute/time stamp)
571 for (ptable = table; ptable->func2; ptable++)
572 if (!(ptable->result&result))
573 ptable->func2(isodir,ana);
582 * XXX the casts are bogus but will do for now.
584 #define BC (rrt_func_t *)
585 static RRIP_TABLE rrip_table_analyze[] = {
586 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
587 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
588 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
589 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
590 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
591 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
596 cd9660_rrip_analyze(isodir,inop,imp)
597 struct iso_directory_record *isodir;
598 struct iso_node *inop;
601 ISO_RRIP_ANALYZE analyze;
605 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
607 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
611 * Get Alternate Name.
613 static RRIP_TABLE rrip_table_getname[] = {
614 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
615 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
616 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
617 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
618 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
619 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
620 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
625 cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
626 struct iso_directory_record *isodir;
632 ISO_RRIP_ANALYZE analyze;
636 analyze.outbuf = outbuf;
637 analyze.outlen = outlen;
638 analyze.maxlen = NAME_MAX;
639 analyze.inump = inump;
641 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
644 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
645 imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l);
646 tab = rrip_table_getname;
647 if (c == 0 || c == 1) {
648 cd9660_rrip_defname(isodir,&analyze);
650 analyze.fields &= ~ISO_SUSP_ALTNAME;
654 return cd9660_rrip_loop(isodir,&analyze,tab);
660 static RRIP_TABLE rrip_table_getsymname[] = {
661 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
662 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
663 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
664 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
669 cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
670 struct iso_directory_record *isodir;
675 ISO_RRIP_ANALYZE analyze;
677 analyze.outbuf = outbuf;
678 analyze.outlen = outlen;
680 analyze.maxlen = MAXPATHLEN;
681 analyze.cont = 1; /* don't start with a slash */
683 analyze.fields = ISO_SUSP_SLINK;
685 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
688 static RRIP_TABLE rrip_table_extref[] = {
689 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
690 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
691 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
696 * Check for Rock Ridge Extension and return offset of its fields.
697 * Note: We insist on the ER field.
700 cd9660_rrip_offset(isodir,imp)
701 struct iso_directory_record *isodir;
705 ISO_RRIP_ANALYZE analyze;
708 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
709 if (bcmp(p,"SP\7\1\276\357",6)) {
710 /* Maybe, it's a CDROM XA disc? */
712 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
713 if (bcmp(p,"SP\7\1\276\357",6))
718 analyze.fields = ISO_SUSP_EXTREF;
719 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
722 return isonum_711(p->skip);