Bug Summary

File:isofs/cd9660/cd9660_rrip.c
Warning:line 227, column 2
Value stored to 'wlen' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name cd9660_rrip.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -D CONFIG_DRM_AMD_DC_DCN3_0 -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /usr/obj/sys/arch/amd64/compile/GENERIC.MP/scan-build/2022-01-12-131800-47421-1 -x c /usr/src/sys/isofs/cd9660/cd9660_rrip.c
1/* $OpenBSD: cd9660_rrip.c,v 1.16 2021/03/05 07:10:06 jsg Exp $ */
2/* $NetBSD: cd9660_rrip.c,v 1.17 1997/01/24 00:27:32 cgd Exp $ */
3
4/*-
5 * Copyright (c) 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley
9 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
10 * Support code is derived from software contributed to Berkeley
11 * by Atsushi Murai (amurai@spec.co.jp).
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * @(#)cd9660_rrip.c 8.6 (Berkeley) 12/5/94
38 */
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/namei.h>
43#include <sys/buf.h>
44#include <sys/vnode.h>
45#include <sys/lock.h>
46#include <sys/mount.h>
47#include <sys/kernel.h>
48#include <sys/stat.h>
49#include <sys/time.h>
50
51#include <isofs/cd9660/iso.h>
52#include <isofs/cd9660/cd9660_extern.h>
53#include <isofs/cd9660/cd9660_node.h>
54#include <isofs/cd9660/cd9660_rrip.h>
55#include <isofs/cd9660/iso_rrip.h>
56
57typedef struct {
58 char type[2];
59 int (*func)(void *, ISO_RRIP_ANALYZE *);
60 void (*func2)(void *, ISO_RRIP_ANALYZE *);
61 int result;
62} RRIP_TABLE;
63
64static int cd9660_rrip_attr(void *, ISO_RRIP_ANALYZE *);
65static void cd9660_rrip_defattr(void *, ISO_RRIP_ANALYZE *);
66static int cd9660_rrip_slink(void *, ISO_RRIP_ANALYZE *);
67static int cd9660_rrip_altname(void *, ISO_RRIP_ANALYZE *);
68static void cd9660_rrip_defname(void *, ISO_RRIP_ANALYZE *);
69static int cd9660_rrip_pclink(void *, ISO_RRIP_ANALYZE *);
70static int cd9660_rrip_reldir(void *, ISO_RRIP_ANALYZE *);
71static int cd9660_rrip_tstamp(void *, ISO_RRIP_ANALYZE *);
72static void cd9660_rrip_deftstamp(void *, ISO_RRIP_ANALYZE *);
73static int cd9660_rrip_device(void *, ISO_RRIP_ANALYZE *);
74static int cd9660_rrip_idflag(void *, ISO_RRIP_ANALYZE *);
75static int cd9660_rrip_cont(void *, ISO_RRIP_ANALYZE *);
76static int cd9660_rrip_stop(void *, ISO_RRIP_ANALYZE *);
77static int cd9660_rrip_extref(void *, ISO_RRIP_ANALYZE *);
78static int cd9660_rrip_loop(struct iso_directory_record *,
79 ISO_RRIP_ANALYZE *, RRIP_TABLE *);
80/*
81 * POSIX file attribute
82 */
83static int
84cd9660_rrip_attr(void *v, ISO_RRIP_ANALYZE *ana)
85{
86 ISO_RRIP_ATTR *p = v;
87
88 ana->inop->inode.iso_mode = isonum_733(p->mode);
89 ana->inop->inode.iso_uid = isonum_733(p->uid);
90 ana->inop->inode.iso_gid = isonum_733(p->gid);
91 ana->inop->inode.iso_links = isonum_733(p->links);
92 ana->fields &= ~ISO_SUSP_ATTR0x0001;
93 return (ISO_SUSP_ATTR0x0001);
94}
95
96static void
97cd9660_rrip_defattr(void *v, ISO_RRIP_ANALYZE *ana)
98{
99 struct iso_directory_record *isodir = v;
100
101 /* But this is a required field! */
102 printf("RRIP without PX field?\n");
103 cd9660_defattr(isodir, ana->inop, NULL((void *)0));
104}
105
106/*
107 * Symbolic Links
108 */
109static int
110cd9660_rrip_slink(void *v, ISO_RRIP_ANALYZE *ana)
111{
112 ISO_RRIP_SLINK *p = v;
113 ISO_RRIP_SLINK_COMPONENT *pcomp;
114 ISO_RRIP_SLINK_COMPONENT *pcompe;
115 int len, wlen, cont;
116 char *outbuf, *inbuf;
117
118 pcomp = (ISO_RRIP_SLINK_COMPONENT *)p->component;
119 pcompe =
120 (ISO_RRIP_SLINK_COMPONENT *)((char *)p + isonum_711(p->h.length));
121 len = *ana->outlen;
122 outbuf = ana->outbuf;
123 cont = ana->cont;
124
125 /*
126 * Gathering a Symbolic name from each component with path
127 */
128 for (; pcomp < pcompe;
129 pcomp = (ISO_RRIP_SLINK_COMPONENT *)
130 ((char *)pcomp + ISO_RRIP_SLSIZ2 + isonum_711(pcomp->clen))) {
131
132 if (!cont) {
133 if (len < ana->maxlen) {
134 len++;
135 *outbuf++ = '/';
136 }
137 }
138 cont = 0;
139
140 inbuf = "..";
141 wlen = 0;
142
143 switch (*pcomp->cflag) {
144
145 case ISO_SUSP_CFLAG_CURRENT0x02:
146 /* Inserting Current */
147 wlen = 1;
148 break;
149
150 case ISO_SUSP_CFLAG_PARENT0x04:
151 /* Inserting Parent */
152 wlen = 2;
153 break;
154
155 case ISO_SUSP_CFLAG_ROOT0x08:
156 /* Inserting slash for ROOT */
157 /* start over from beginning(?) */
158 outbuf -= len;
159 len = 0;
160 break;
161
162 case ISO_SUSP_CFLAG_VOLROOT0x10:
163 /* Inserting a mount point i.e. "/cdrom" */
164 /* same as above */
165 outbuf -= len;
166 len = 0;
167 inbuf = ana->imp->im_mountp->mnt_stat.f_mntonname;
168 wlen = strlen(inbuf);
169 break;
170
171 case ISO_SUSP_CFLAG_HOST0x20:
172 /* Inserting hostname i.e. "kurt.tools.de" */
173 inbuf = hostname;
174 wlen = hostnamelen;
175 break;
176
177 case ISO_SUSP_CFLAG_CONTINUE0x01:
178 cont = 1;
179 /* FALLTHROUGH */
180 case 0:
181 /* Inserting component */
182 wlen = isonum_711(pcomp->clen);
183 inbuf = pcomp->name;
184 break;
185 default:
186 printf("RRIP with incorrect flags?");
187 wlen = ana->maxlen + 1;
188 break;
189 }
190
191 if (len + wlen > ana->maxlen) {
192 /* indicate error to caller */
193 ana->cont = 1;
194 ana->fields = 0;
195 ana->outbuf -= *ana->outlen;
196 *ana->outlen = 0;
197 return (0);
198 }
199
200 bcopy(inbuf, outbuf, wlen);
201 outbuf += wlen;
202 len += wlen;
203 }
204 ana->outbuf = outbuf;
205 *ana->outlen = len;
206 ana->cont = cont;
207
208 if (!isonum_711(p->flags)) {
209 ana->fields &= ~ISO_SUSP_SLINK0x0004;
210 return (ISO_SUSP_SLINK0x0004);
211 }
212 return (0);
213}
214
215/*
216 * Alternate name
217 */
218static int
219cd9660_rrip_altname(void *v, ISO_RRIP_ANALYZE *ana)
220{
221 ISO_RRIP_ALTNAME *p = v;
222 char *inbuf;
223 int wlen;
224 int cont;
225
226 inbuf = "..";
227 wlen = 0;
Value stored to 'wlen' is never read
228 cont = 0;
229
230 switch (*p->flags) {
231 case ISO_SUSP_CFLAG_CURRENT0x02:
232 /* Inserting Current */
233 wlen = 1;
234 break;
235
236 case ISO_SUSP_CFLAG_PARENT0x04:
237 /* Inserting Parent */
238 wlen = 2;
239 break;
240
241 case ISO_SUSP_CFLAG_HOST0x20:
242 /* Inserting hostname i.e. "kurt.tools.de" */
243 inbuf = hostname;
244 wlen = hostnamelen;
245 break;
246
247 case ISO_SUSP_CFLAG_CONTINUE0x01:
248 cont = 1;
249 /* FALLTHROUGH */
250 case 0:
251 /* Inserting component */
252 wlen = isonum_711(p->h.length) - 5;
253 inbuf = (char *)p + 5;
254 break;
255
256 default:
257 printf("RRIP with incorrect NM flags?\n");
258 wlen = ana->maxlen + 1;
259 break;
260 }
261
262 if ((*ana->outlen += wlen) > ana->maxlen) {
263 /* treat as no name field */
264 ana->fields &= ~ISO_SUSP_ALTNAME0x0008;
265 ana->outbuf -= *ana->outlen - wlen;
266 *ana->outlen = 0;
267 return (0);
268 }
269
270 bcopy(inbuf, ana->outbuf, wlen);
271 ana->outbuf += wlen;
272
273 if (!cont) {
274 ana->fields &= ~ISO_SUSP_ALTNAME0x0008;
275 return (ISO_SUSP_ALTNAME0x0008);
276 }
277 return (0);
278}
279
280static void
281cd9660_rrip_defname(void *v, ISO_RRIP_ANALYZE *ana)
282{
283 struct iso_directory_record *isodir = v;
284
285 strlcpy(ana->outbuf, "..", ana->maxlen - *ana->outlen);
286 switch (*isodir->name) {
287 default:
288 isofntrans(isodir->name, isonum_711(isodir->name_len),
289 ana->outbuf, ana->outlen, 1,
290 isonum_711(isodir->flags) & 4, ana->imp->joliet_level);
291 break;
292 case 0:
293 *ana->outlen = 1;
294 break;
295 case 1:
296 *ana->outlen = 2;
297 break;
298 }
299}
300
301/*
302 * Parent or Child Link
303 */
304static int
305cd9660_rrip_pclink(void *v, ISO_RRIP_ANALYZE *ana)
306{
307 ISO_RRIP_CLINK *p = v;
308
309 *ana->inump = isonum_733(p->dir_loc) << ana->imp->im_bshift;
310 ana->fields &= ~(ISO_SUSP_CLINK0x0010 | ISO_SUSP_PLINK0x0020);
311 return (*p->h.type == 'C' ? ISO_SUSP_CLINK0x0010 : ISO_SUSP_PLINK0x0020);
312}
313
314/*
315 * Relocated directory
316 */
317/*ARGSUSED*/
318static int
319cd9660_rrip_reldir(void *v, ISO_RRIP_ANALYZE *ana)
320{
321 /* special hack to make caller aware of RE field */
322 *ana->outlen = 0;
323 ana->fields = 0;
324 return (ISO_SUSP_RELDIR0x0040 | ISO_SUSP_ALTNAME0x0008 | ISO_SUSP_CLINK0x0010 |
325 ISO_SUSP_PLINK0x0020);
326}
327
328static int
329cd9660_rrip_tstamp(void *v, ISO_RRIP_ANALYZE *ana)
330{
331 ISO_RRIP_TSTAMP *p = v;
332 u_char *ptime;
333
334 ptime = p->time;
335
336 /* Check a format of time stamp (7bytes/17bytes) */
337 if (!(*p->flags & ISO_SUSP_TSTAMP_FORM170x80)) {
338 if (*p->flags & ISO_SUSP_TSTAMP_CREAT0x01)
339 ptime += 7;
340
341 if (*p->flags & ISO_SUSP_TSTAMP_MODIFY0x02) {
342 cd9660_tstamp_conv7(ptime,
343 &ana->inop->inode.iso_mtime);
344 ptime += 7;
345 } else
346 bzero(&ana->inop->inode.iso_mtime,__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof
(struct timespec)))
347 sizeof(struct timespec))__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof
(struct timespec)))
;
348
349 if (*p->flags & ISO_SUSP_TSTAMP_ACCESS0x04) {
350 cd9660_tstamp_conv7(ptime,
351 &ana->inop->inode.iso_atime);
352 ptime += 7;
353 } else
354 ana->inop->inode.iso_atime =
355 ana->inop->inode.iso_mtime;
356
357 if (*p->flags & ISO_SUSP_TSTAMP_ATTR0x08)
358 cd9660_tstamp_conv7(ptime,
359 &ana->inop->inode.iso_ctime);
360 else
361 ana->inop->inode.iso_ctime =
362 ana->inop->inode.iso_mtime;
363
364 } else {
365 if (*p->flags & ISO_SUSP_TSTAMP_CREAT0x01)
366 ptime += 17;
367
368 if (*p->flags & ISO_SUSP_TSTAMP_MODIFY0x02) {
369 cd9660_tstamp_conv17(ptime,
370 &ana->inop->inode.iso_mtime);
371 ptime += 17;
372 } else
373 bzero(&ana->inop->inode.iso_mtime,__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof
(struct timespec)))
374 sizeof(struct timespec))__builtin_bzero((&ana->inop->inode.iso_mtime), (sizeof
(struct timespec)))
;
375
376 if (*p->flags & ISO_SUSP_TSTAMP_ACCESS0x04) {
377 cd9660_tstamp_conv17(ptime,
378 &ana->inop->inode.iso_atime);
379 ptime += 17;
380 } else
381 ana->inop->inode.iso_atime =
382 ana->inop->inode.iso_mtime;
383
384 if (*p->flags & ISO_SUSP_TSTAMP_ATTR0x08)
385 cd9660_tstamp_conv17(ptime,
386 &ana->inop->inode.iso_ctime);
387 else
388 ana->inop->inode.iso_ctime =
389 ana->inop->inode.iso_mtime;
390
391 }
392 ana->fields &= ~ISO_SUSP_TSTAMP0x0080;
393 return (ISO_SUSP_TSTAMP0x0080);
394}
395
396static void
397cd9660_rrip_deftstamp(void *v, ISO_RRIP_ANALYZE *ana)
398{
399 struct iso_directory_record *isodir = v;
400
401 cd9660_deftstamp(isodir, ana->inop, NULL((void *)0));
402}
403
404/*
405 * POSIX device modes
406 */
407static int
408cd9660_rrip_device(void *v, ISO_RRIP_ANALYZE *ana)
409{
410 ISO_RRIP_DEVICE *p = v;
411 u_int high, low;
412
413 high = isonum_733(p->dev_t_high);
414 low = isonum_733(p->dev_t_low);
415
416 if (high == 0)
417 ana->inop->inode.iso_rdev = makedev(major(low), minor(low))((dev_t)(((((((unsigned)(low) >> 8) & 0xff)) & 0xff
) << 8) | ((((unsigned)((low) & 0xff) | (((low) &
0xffff0000) >> 8))) & 0xff) | (((((unsigned)((low)
& 0xff) | (((low) & 0xffff0000) >> 8))) & 0xffff00
) << 8)))
;
418 else
419 ana->inop->inode.iso_rdev = makedev(high, minor(low))((dev_t)((((high) & 0xff) << 8) | ((((unsigned)((low
) & 0xff) | (((low) & 0xffff0000) >> 8))) &
0xff) | (((((unsigned)((low) & 0xff) | (((low) & 0xffff0000
) >> 8))) & 0xffff00) << 8)))
;
420 ana->fields &= ~ISO_SUSP_DEVICE0x0002;
421 return (ISO_SUSP_DEVICE0x0002);
422}
423
424/*
425 * Flag indicating
426 */
427static int
428cd9660_rrip_idflag(void *v, ISO_RRIP_ANALYZE *ana)
429{
430 ISO_RRIP_IDFLAG *p = v;
431
432 /* don't touch high bits */
433 ana->fields &= isonum_711(p->flags) | ~0xff;
434 /* special handling of RE field */
435 if (ana->fields & ISO_SUSP_RELDIR0x0040)
436 return (cd9660_rrip_reldir(p, ana));
437
438 return (ISO_SUSP_IDFLAG0x0100);
439}
440
441/*
442 * Continuation pointer
443 */
444static int
445cd9660_rrip_cont(void *v, ISO_RRIP_ANALYZE *ana)
446{
447 ISO_RRIP_CONT *p = v;
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_CONT0x0400);
453}
454
455/*
456 * System Use end
457 */
458static int
459cd9660_rrip_stop(void *v, ISO_RRIP_ANALYZE *ana)
460{
461 return (ISO_SUSP_STOP0x1000);
462}
463
464/*
465 * Extension reference
466 */
467static int
468cd9660_rrip_extref(void *v, ISO_RRIP_ANALYZE *ana)
469{
470 ISO_RRIP_EXTREF *p = v;
471
472 if (isonum_711(p->version) != 1)
473 return (0);
474 if (isonum_711(p->len_id) != 9 &&
475 isonum_711(p->len_id) != 10)
476 return (0);
477 if (isonum_711(p->len_id) == 9 &&
478 bcmp((char *)p + 8, "IEEE_1282", 9))
479 return (0);
480 if (isonum_711(p->len_id) == 10 &&
481 bcmp((char *)p + 8, "IEEE_P1282", 10) &&
482 bcmp((char *)p + 8, "RRIP_1991A", 10))
483 return (0);
484 ana->fields &= ~ISO_SUSP_EXTREF0x0200;
485 return (ISO_SUSP_EXTREF0x0200);
486}
487
488
489static int
490cd9660_rrip_loop(struct iso_directory_record *isodir, ISO_RRIP_ANALYZE *ana,
491 RRIP_TABLE *table)
492{
493 RRIP_TABLE *ptable;
494 ISO_SUSP_HEADER *phead;
495 ISO_SUSP_HEADER *pend;
496 struct buf *bp = NULL((void *)0);
497 char *pwhead;
498 u_char c;
499 int result;
500
501 /*
502 * Note: If name length is odd,
503 * it will be padded by 1 byte after the name
504 */
505 pwhead = isodir->name + isonum_711(isodir->name_len);
506 if (!(isonum_711(isodir->name_len) & 1))
507 pwhead++;
508 isochar(isodir->name, pwhead, ana->imp->joliet_level, &c);
509
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;
513 else
514 pwhead += ana->imp->rr_skip0;
515
516 phead = (ISO_SUSP_HEADER *)pwhead;
517 pend =
518 (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 {
532 result |=
533 ptable->func(phead, ana);
534 break;
535 }
536 }
537 if (!ana->fields)
538 break;
539 }
540 if (result & ISO_SUSP_STOP0x1000) {
541 result &= ~ISO_SUSP_STOP0x1000;
542 break;
543 }
544 /* plausibility check */
545 if (isonum_711(phead->length) < sizeof(*phead))
546 break;
547 /*
548 * move to next SUSP
549 * Hopefully this works with newer versions, too
550 */
551 phead = (ISO_SUSP_HEADER *)
552 ((char *)phead + isonum_711(phead->length));
553 }
554
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 >
558 ana->imp->logical_block_size ||
559 bread(ana->imp->im_devvp, ana->iso_ce_blk <<
560 (ana->imp->im_bshift - DEV_BSHIFT9),
561 ana->imp->logical_block_size, &bp))
562 /* what to do now? */
563 break;
564 phead =
565 (ISO_SUSP_HEADER *)(bp->b_data + ana->iso_ce_off);
566 pend = (ISO_SUSP_HEADER *)
567 ((char *)phead + ana->iso_ce_len);
568 } else
569 break;
570 }
571 if (bp)
572 brelse(bp);
573 /*
574 * If we don't find the Basic SUSP stuffs, just set default value
575 * (attribute/time stamp)
576 */
577 for (ptable = table; ptable->func2; ptable++)
578 if (!(ptable->result & result))
579 ptable->func2(isodir, ana);
580
581 return (result);
582}
583
584/*
585 * Get Attributes.
586 */
587static RRIP_TABLE rrip_table_analyze[] = {
588 { "PX", cd9660_rrip_attr, cd9660_rrip_defattr,
589 ISO_SUSP_ATTR0x0001 },
590 { "TF", cd9660_rrip_tstamp, cd9660_rrip_deftstamp,
591 ISO_SUSP_TSTAMP0x0080 },
592 { "PN", cd9660_rrip_device, 0,
593 ISO_SUSP_DEVICE0x0002 },
594 { "RR", cd9660_rrip_idflag, 0,
595 ISO_SUSP_IDFLAG0x0100 },
596 { "CE", cd9660_rrip_cont, 0,
597 ISO_SUSP_CONT0x0400 },
598 { "ST", cd9660_rrip_stop, 0,
599 ISO_SUSP_STOP0x1000 },
600 { "", 0, 0,
601 0 }
602};
603
604int
605cd9660_rrip_analyze(struct iso_directory_record *isodir, struct iso_node *inop,
606 struct iso_mnt *imp)
607{
608 ISO_RRIP_ANALYZE analyze;
609
610 analyze.inop = inop;
611 analyze.imp = imp;
612 analyze.fields = ISO_SUSP_ATTR0x0001 | ISO_SUSP_TSTAMP0x0080 | ISO_SUSP_DEVICE0x0002;
613
614 return (cd9660_rrip_loop(isodir, &analyze, rrip_table_analyze));
615}
616
617/*
618 * Get Alternate Name.
619 */
620static RRIP_TABLE rrip_table_getname[] = {
621 { "NM", cd9660_rrip_altname, cd9660_rrip_defname,
622 ISO_SUSP_ALTNAME0x0008 },
623 { "CL", cd9660_rrip_pclink, 0,
624 ISO_SUSP_CLINK0x0010|ISO_SUSP_PLINK0x0020 },
625 { "PL", cd9660_rrip_pclink, 0,
626 ISO_SUSP_CLINK0x0010|ISO_SUSP_PLINK0x0020 },
627 { "RE", cd9660_rrip_reldir, 0,
628 ISO_SUSP_RELDIR0x0040 },
629 { "RR", cd9660_rrip_idflag, 0,
630 ISO_SUSP_IDFLAG0x0100 },
631 { "CE", cd9660_rrip_cont, 0,
632 ISO_SUSP_CONT0x0400 },
633 { "ST", cd9660_rrip_stop, 0,
634 ISO_SUSP_STOP0x1000 },
635 { "", 0, 0,
636 0 }
637};
638
639int
640cd9660_rrip_getname(struct iso_directory_record *isodir, char *outbuf,
641 u_short *outlen, cdino_t *inump, struct iso_mnt *imp)
642{
643 ISO_RRIP_ANALYZE analyze;
644 RRIP_TABLE *tab;
645 u_char c;
646
647 analyze.outbuf = outbuf;
648 analyze.outlen = outlen;
649 analyze.maxlen = NAME_MAX255;
650 analyze.inump = inump;
651 analyze.imp = imp;
652 analyze.fields = ISO_SUSP_ALTNAME0x0008 | ISO_SUSP_RELDIR0x0040 | ISO_SUSP_CLINK0x0010 |
653 ISO_SUSP_PLINK0x0020;
654 *outlen = 0;
655
656 isochar(isodir->name, isodir->name + isonum_711(isodir->name_len),
657 imp->joliet_level, &c);
658 tab = rrip_table_getname;
659 if (c == 0 || c == 1) {
660 cd9660_rrip_defname(isodir, &analyze);
661
662 analyze.fields &= ~ISO_SUSP_ALTNAME0x0008;
663 tab++;
664 }
665
666 return (cd9660_rrip_loop(isodir, &analyze, tab));
667}
668
669/*
670 * Get Symbolic Link.
671 */
672static RRIP_TABLE rrip_table_getsymname[] = {
673 { "SL", cd9660_rrip_slink, 0, ISO_SUSP_SLINK0x0004 },
674 { "RR", cd9660_rrip_idflag, 0, ISO_SUSP_IDFLAG0x0100 },
675 { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT0x0400 },
676 { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP0x1000 },
677 { "", 0, 0, 0 }
678};
679
680int
681cd9660_rrip_getsymname(struct iso_directory_record *isodir, char *outbuf,
682 u_short *outlen, struct iso_mnt *imp)
683{
684 ISO_RRIP_ANALYZE analyze;
685
686 analyze.outbuf = outbuf;
687 analyze.outlen = outlen;
688 *outlen = 0;
689 analyze.maxlen = MAXPATHLEN1024;
690 analyze.cont = 1; /* don't start with a slash */
691 analyze.imp = imp;
692 analyze.fields = ISO_SUSP_SLINK0x0004;
693
694 return (cd9660_rrip_loop(isodir, &analyze, rrip_table_getsymname) &
695 ISO_SUSP_SLINK0x0004);
696}
697
698static RRIP_TABLE rrip_table_extref[] = {
699 { "ER", cd9660_rrip_extref, 0, ISO_SUSP_EXTREF0x0200 },
700 { "CE", cd9660_rrip_cont, 0, ISO_SUSP_CONT0x0400 },
701 { "ST", cd9660_rrip_stop, 0, ISO_SUSP_STOP0x1000 },
702 { "", 0, 0, 0 }
703};
704
705/*
706 * Check for Rock Ridge Extension and return offset of its fields.
707 * Note: We insist on the ER field.
708 */
709int
710cd9660_rrip_offset(struct iso_directory_record *isodir, struct iso_mnt *imp)
711{
712 ISO_RRIP_OFFSET *p;
713 ISO_RRIP_ANALYZE analyze;
714
715 imp->rr_skip0 = 0;
716 p = (ISO_RRIP_OFFSET *)(isodir->name + 1);
717 if (bcmp(p, "SP\7\1\276\357", 6)) {
718 /* Maybe, it's a CDROM XA disc? */
719 imp->rr_skip0 = 15;
720 p = (ISO_RRIP_OFFSET *)((char *)p + 15);
721 if (bcmp(p, "SP\7\1\276\357", 6))
722 return (-1);
723 }
724
725 analyze.imp = imp;
726 analyze.fields = ISO_SUSP_EXTREF0x0200;
727 if (!(cd9660_rrip_loop(isodir, &analyze, rrip_table_extref) &
728 ISO_SUSP_EXTREF0x0200))
729 return (-1);
730
731 return (isonum_711(p->skip));
732}