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 * 4. 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.
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
34 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
41 #include <sys/systm.h>
44 #include <sys/vnode.h>
45 #include <sys/mount.h>
46 #include <sys/kernel.h>
47 #include <sys/vimage.h>
49 #include <fs/cd9660/iso.h>
50 #include <fs/cd9660/cd9660_node.h>
51 #include <fs/cd9660/cd9660_rrip.h>
52 #include <fs/cd9660/iso_rrip.h>
54 typedef int rrt_func_t(void *, ISO_RRIP_ANALYZE *ana);
59 void (*func2)(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana);
63 static int cd9660_rrip_altname(ISO_RRIP_ALTNAME *p, ISO_RRIP_ANALYZE *ana);
64 static int cd9660_rrip_attr(ISO_RRIP_ATTR *p, ISO_RRIP_ANALYZE *ana);
65 static int cd9660_rrip_cont(ISO_RRIP_CONT *p, ISO_RRIP_ANALYZE *ana);
66 static void cd9660_rrip_defattr(struct iso_directory_record *isodir,
67 ISO_RRIP_ANALYZE *ana);
68 static void cd9660_rrip_defname(struct iso_directory_record *isodir,
69 ISO_RRIP_ANALYZE *ana);
70 static void cd9660_rrip_deftstamp(struct iso_directory_record *isodir,
71 ISO_RRIP_ANALYZE *ana);
72 static int cd9660_rrip_device(ISO_RRIP_DEVICE *p, ISO_RRIP_ANALYZE *ana);
73 static int cd9660_rrip_extref(ISO_RRIP_EXTREF *p, ISO_RRIP_ANALYZE *ana);
74 static int cd9660_rrip_idflag(ISO_RRIP_IDFLAG *p, ISO_RRIP_ANALYZE *ana);
75 static int cd9660_rrip_loop(struct iso_directory_record *isodir,
76 ISO_RRIP_ANALYZE *ana, RRIP_TABLE *table);
77 static int cd9660_rrip_pclink(ISO_RRIP_CLINK *p, ISO_RRIP_ANALYZE *ana);
78 static int cd9660_rrip_reldir(ISO_RRIP_RELDIR *p, ISO_RRIP_ANALYZE *ana);
79 static int cd9660_rrip_slink(ISO_RRIP_SLINK *p, ISO_RRIP_ANALYZE *ana);
80 static int cd9660_rrip_stop(ISO_SUSP_HEADER *p, ISO_RRIP_ANALYZE *ana);
81 static int cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, ISO_RRIP_ANALYZE *ana);
84 * POSIX file attribute
87 cd9660_rrip_attr(p,ana)
89 ISO_RRIP_ANALYZE *ana;
91 ana->inop->inode.iso_mode = isonum_733(p->mode);
92 ana->inop->inode.iso_uid = isonum_733(p->uid);
93 ana->inop->inode.iso_gid = isonum_733(p->gid);
94 ana->inop->inode.iso_links = isonum_733(p->links);
95 ana->fields &= ~ISO_SUSP_ATTR;
100 cd9660_rrip_defattr(isodir,ana)
101 struct iso_directory_record *isodir;
102 ISO_RRIP_ANALYZE *ana;
104 /* But this is a required field! */
105 printf("RRIP without PX field?\n");
106 cd9660_defattr(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
113 cd9660_rrip_slink(p,ana)
115 ISO_RRIP_ANALYZE *ana;
117 INIT_VPROCG(TD_TO_VPROCG(curthread));
118 ISO_RRIP_SLINK_COMPONENT *pcomp;
119 ISO_RRIP_SLINK_COMPONENT *pcompe;
121 char *outbuf, *inbuf;
123 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
124 pcompe = (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
126 outbuf = ana->outbuf;
130 * Gathering a Symbolic name from each component with path
134 pcomp = (ISO_RRIP_SLINK_COMPONENT *)((char *)pcomp + ISO_RRIP_SLSIZ
135 + isonum_711(pcomp->clen))) {
138 if (len < ana->maxlen) {
148 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 /* XXXRW: locking. */
176 /* Inserting hostname i.e. "kurt.tools.de" */
178 wlen = strlen(V_hostname);
181 case ISO_SUSP_CFLAG_CONTINUE:
185 /* Inserting component */
186 wlen = isonum_711(pcomp->clen);
190 printf("RRIP with incorrect flags?");
191 wlen = ana->maxlen + 1;
195 if (len + wlen > ana->maxlen) {
196 /* indicate error to caller */
199 ana->outbuf -= *ana->outlen;
204 bcopy(inbuf,outbuf,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;
228 INIT_VPROCG(TD_TO_VPROCG(curthread));
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 /* XXXRW: locking. */
250 /* Inserting hostname i.e. "kurt.tools.de" */
252 wlen = strlen(V_hostname);
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 bcopy(inbuf,ana->outbuf,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 bzero(&ana->inop->inode.iso_mtime,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 bzero(&ana->inop->inode.iso_mtime,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;
393 ana->fields &= ~ISO_SUSP_TSTAMP;
394 return ISO_SUSP_TSTAMP;
398 cd9660_rrip_deftstamp(isodir,ana)
399 struct iso_directory_record *isodir;
400 ISO_RRIP_ANALYZE *ana;
402 cd9660_deftstamp(isodir,ana->inop,NULL,ISO_FTYPE_RRIP);
409 cd9660_rrip_device(p,ana)
411 ISO_RRIP_ANALYZE *ana;
415 high = isonum_733(p->dev_t_high);
416 low = isonum_733(p->dev_t_low);
419 ana->inop->inode.iso_rdev = makedev(umajor(low), uminor(low));
421 ana->inop->inode.iso_rdev = makedev(high, uminor(low));
422 ana->fields &= ~ISO_SUSP_DEVICE;
423 return ISO_SUSP_DEVICE;
430 cd9660_rrip_idflag(p,ana)
432 ISO_RRIP_ANALYZE *ana;
434 ana->fields &= isonum_711(p->flags)|~0xff; /* don't touch high bits */
435 /* special handling of RE field */
436 if (ana->fields&ISO_SUSP_RELDIR)
437 return cd9660_rrip_reldir(/* XXX */ (ISO_RRIP_RELDIR *)p,ana);
439 return ISO_SUSP_IDFLAG;
443 * Continuation pointer
446 cd9660_rrip_cont(p,ana)
448 ISO_RRIP_ANALYZE *ana;
450 ana->iso_ce_blk = isonum_733(p->location);
451 ana->iso_ce_off = isonum_733(p->offset);
452 ana->iso_ce_len = isonum_733(p->length);
453 return ISO_SUSP_CONT;
460 cd9660_rrip_stop(p,ana)
462 ISO_RRIP_ANALYZE *ana;
464 return ISO_SUSP_STOP;
468 * Extension reference
471 cd9660_rrip_extref(p,ana)
473 ISO_RRIP_ANALYZE *ana;
475 if (isonum_711(p->len_id) != 10
476 || bcmp((char *)p + 8,"RRIP_1991A",10)
477 || isonum_711(p->version) != 1)
479 ana->fields &= ~ISO_SUSP_EXTREF;
480 return ISO_SUSP_EXTREF;
484 cd9660_rrip_loop(isodir,ana,table)
485 struct iso_directory_record *isodir;
486 ISO_RRIP_ANALYZE *ana;
490 ISO_SUSP_HEADER *phead;
491 ISO_SUSP_HEADER *pend;
492 struct buf *bp = NULL;
498 * Note: If name length is odd,
499 * it will be padding 1 byte after the name
501 pwhead = isodir->name + isonum_711(isodir->name_len);
502 if (!(isonum_711(isodir->name_len)&1))
504 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c, NULL,
505 ana->imp->im_flags, ana->imp->im_d2l);
507 /* If it's not the '.' entry of the root dir obey SP field */
508 if (c != 0 || isonum_733(isodir->extent) != ana->imp->root_extent)
509 pwhead += ana->imp->rr_skip;
511 pwhead += ana->imp->rr_skip0;
513 phead = (ISO_SUSP_HEADER *)pwhead;
514 pend = (ISO_SUSP_HEADER *)((char *)isodir + isonum_711(isodir->length));
520 * Note: "pend" should be more than one SUSP header
522 while (pend >= phead + 1) {
523 if (isonum_711(phead->version) == 1) {
524 for (ptable = table; ptable->func; ptable++) {
525 if (*phead->type == *ptable->type
526 && phead->type[1] == ptable->type[1]) {
527 result |= ptable->func(phead,ana);
534 if (result&ISO_SUSP_STOP) {
535 result &= ~ISO_SUSP_STOP;
538 /* plausibility check */
539 if (isonum_711(phead->length) < sizeof(*phead))
543 * Hopefully this works with newer versions, too
545 phead = (ISO_SUSP_HEADER *)((char *)phead + isonum_711(phead->length));
548 if (ana->fields && ana->iso_ce_len) {
549 if (ana->iso_ce_blk >= ana->imp->volume_space_size
550 || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
551 || bread(ana->imp->im_devvp,
553 (ana->imp->im_bshift - DEV_BSHIFT),
554 ana->imp->logical_block_size, NOCRED, &bp))
555 /* what to do now? */
557 phead = (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
558 pend = (ISO_SUSP_HEADER *) ((char *)phead + ana->iso_ce_len);
565 * If we don't find the Basic SUSP stuffs, just set default value
566 * (attribute/time stamp)
568 for (ptable = table; ptable->func2; ptable++)
569 if (!(ptable->result&result))
570 ptable->func2(isodir,ana);
579 * XXX the casts are bogus but will do for now.
581 #define BC (rrt_func_t *)
582 static RRIP_TABLE rrip_table_analyze[] = {
583 { "PX", BC cd9660_rrip_attr, cd9660_rrip_defattr, ISO_SUSP_ATTR },
584 { "TF", BC cd9660_rrip_tstamp, cd9660_rrip_deftstamp, ISO_SUSP_TSTAMP },
585 { "PN", BC cd9660_rrip_device, 0, ISO_SUSP_DEVICE },
586 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
587 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
588 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
593 cd9660_rrip_analyze(isodir,inop,imp)
594 struct iso_directory_record *isodir;
595 struct iso_node *inop;
598 ISO_RRIP_ANALYZE analyze;
602 analyze.fields = ISO_SUSP_ATTR|ISO_SUSP_TSTAMP|ISO_SUSP_DEVICE;
604 return cd9660_rrip_loop(isodir,&analyze,rrip_table_analyze);
608 * Get Alternate Name.
610 static RRIP_TABLE rrip_table_getname[] = {
611 { "NM", BC cd9660_rrip_altname, cd9660_rrip_defname, ISO_SUSP_ALTNAME },
612 { "CL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
613 { "PL", BC cd9660_rrip_pclink, 0, ISO_SUSP_CLINK|ISO_SUSP_PLINK },
614 { "RE", BC cd9660_rrip_reldir, 0, ISO_SUSP_RELDIR },
615 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
616 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
617 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
622 cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
623 struct iso_directory_record *isodir;
629 ISO_RRIP_ANALYZE analyze;
633 analyze.outbuf = outbuf;
634 analyze.outlen = outlen;
635 analyze.maxlen = NAME_MAX;
636 analyze.inump = inump;
638 analyze.fields = ISO_SUSP_ALTNAME|ISO_SUSP_RELDIR|ISO_SUSP_CLINK|ISO_SUSP_PLINK;
641 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
642 imp->joliet_level, &c, NULL, imp->im_flags, imp->im_d2l);
643 tab = rrip_table_getname;
644 if (c == 0 || c == 1) {
645 cd9660_rrip_defname(isodir,&analyze);
647 analyze.fields &= ~ISO_SUSP_ALTNAME;
651 return cd9660_rrip_loop(isodir,&analyze,tab);
657 static RRIP_TABLE rrip_table_getsymname[] = {
658 { "SL", BC cd9660_rrip_slink, 0, ISO_SUSP_SLINK },
659 { "RR", BC cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG },
660 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
661 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
666 cd9660_rrip_getsymname(isodir,outbuf,outlen,imp)
667 struct iso_directory_record *isodir;
672 ISO_RRIP_ANALYZE analyze;
674 analyze.outbuf = outbuf;
675 analyze.outlen = outlen;
677 analyze.maxlen = MAXPATHLEN;
678 analyze.cont = 1; /* don't start with a slash */
680 analyze.fields = ISO_SUSP_SLINK;
682 return (cd9660_rrip_loop(isodir,&analyze,rrip_table_getsymname)&ISO_SUSP_SLINK);
685 static RRIP_TABLE rrip_table_extref[] = {
686 { "ER", BC cd9660_rrip_extref, 0, ISO_SUSP_EXTREF },
687 { "CE", BC cd9660_rrip_cont, 0, ISO_SUSP_CONT },
688 { "ST", BC cd9660_rrip_stop, 0, ISO_SUSP_STOP },
693 * Check for Rock Ridge Extension and return offset of its fields.
694 * Note: We insist on the ER field.
697 cd9660_rrip_offset(isodir,imp)
698 struct iso_directory_record *isodir;
702 ISO_RRIP_ANALYZE analyze;
705 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
706 if (bcmp(p,"SP\7\1\276\357",6)) {
707 /* Maybe, it's a CDROM XA disc? */
709 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
710 if (bcmp(p,"SP\7\1\276\357",6))
715 analyze.fields = ISO_SUSP_EXTREF;
716 if (!(cd9660_rrip_loop(isodir,&analyze,rrip_table_extref)&ISO_SUSP_EXTREF))
719 return isonum_711(p->skip);