1/*-
2 * Copyright (c) 1982, 1986, 1989, 1994, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
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).
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
25 *
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
36 * SUCH DAMAGE.
37 *
38 * @(#)cd9660_node.c 8.2 (Berkeley) 1/23/94
| 1/*-
2 * Copyright (c) 1982, 1986, 1989, 1994, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
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).
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
25 *
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
36 * SUCH DAMAGE.
37 *
38 * @(#)cd9660_node.c 8.2 (Berkeley) 1/23/94
|
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/mount.h>
45#include <sys/bio.h>
46#include <sys/buf.h>
47#include <sys/vnode.h>
48#include <sys/malloc.h>
49#include <sys/stat.h>
50#include <sys/mutex.h>
51
52#include <isofs/cd9660/iso.h>
53#include <isofs/cd9660/cd9660_node.h>
54#include <isofs/cd9660/cd9660_mount.h>
55
56/*
57 * Structures associated with iso_node caching.
58 */
59static struct iso_node **isohashtbl;
60static u_long isohash;
61#define INOHASH(device, inum) ((minor(device) + ((inum)>>12)) & isohash)
62static struct mtx cd9660_ihash_mtx;
63
64static void cd9660_ihashrem(struct iso_node *);
65static unsigned cd9660_chars2ui(unsigned char *begin, int len);
66
67/*
68 * Initialize hash links for inodes and dnodes.
69 */
70int
71cd9660_init(vfsp)
72 struct vfsconf *vfsp;
73{
74
75 isohashtbl = hashinit(desiredvnodes, M_ISOFSMNT, &isohash);
76 mtx_init(&cd9660_ihash_mtx, "cd9660_ihash", NULL, MTX_DEF);
77 return (0);
78}
79
80int
81cd9660_uninit(vfsp)
82 struct vfsconf *vfsp;
83{
84
85 if (isohashtbl != NULL)
86 free(isohashtbl, M_ISOFSMNT);
87 return (0);
88}
89
90
91/*
92 * Use the device/inum pair to find the incore inode, and return a pointer
93 * to it. If it is in core, but locked, wait for it.
94 */
95int
96cd9660_ihashget(dev, inum, flags, vpp)
97 dev_t dev;
98 ino_t inum;
99 int flags;
100 struct vnode **vpp;
101{
102 struct thread *td = curthread; /* XXX */
103 struct iso_node *ip;
104 struct vnode *vp;
105 int error;
106
107 *vpp = NULL;
108loop:
109 mtx_lock(&cd9660_ihash_mtx);
110 for (ip = isohashtbl[INOHASH(dev, inum)]; ip; ip = ip->i_next) {
111 if (inum == ip->i_number && dev == ip->i_dev) {
112 vp = ITOV(ip);
113 mtx_lock(&vp->v_interlock);
114 mtx_unlock(&cd9660_ihash_mtx);
115 error = vget(vp, flags | LK_INTERLOCK, td);
116 if (error == ENOENT)
117 goto loop;
118 if (error)
119 return (error);
120 *vpp = vp;
121 return (0);
122 }
123 }
124 mtx_unlock(&cd9660_ihash_mtx);
125 return (0);
126}
127
128/*
129 * Insert the inode into the hash table, and return it locked.
130 */
131void
132cd9660_ihashins(ip)
133 struct iso_node *ip;
134{
135 struct iso_node **ipp, *iq;
136
137 mtx_lock(&cd9660_ihash_mtx);
138 ipp = &isohashtbl[INOHASH(ip->i_dev, ip->i_number)];
139 if ((iq = *ipp) != NULL)
140 iq->i_prev = &ip->i_next;
141 ip->i_next = iq;
142 ip->i_prev = ipp;
143 *ipp = ip;
144 mtx_unlock(&cd9660_ihash_mtx);
145
146 vn_lock(ITOV(ip), LK_EXCLUSIVE | LK_RETRY, curthread);
147}
148
149/*
150 * Remove the inode from the hash table.
151 */
152static void
153cd9660_ihashrem(ip)
154 register struct iso_node *ip;
155{
156 register struct iso_node *iq;
157
158 mtx_lock(&cd9660_ihash_mtx);
159 if ((iq = ip->i_next) != NULL)
160 iq->i_prev = ip->i_prev;
161 *ip->i_prev = iq;
162#ifdef DIAGNOSTIC
163 ip->i_next = NULL;
164 ip->i_prev = NULL;
165#endif
166 mtx_unlock(&cd9660_ihash_mtx);
167}
168
169/*
170 * Last reference to an inode, write the inode out and if necessary,
171 * truncate and deallocate the file.
172 */
173int
174cd9660_inactive(ap)
175 struct vop_inactive_args /* {
176 struct vnode *a_vp;
177 struct thread *a_td;
178 } */ *ap;
179{
180 struct vnode *vp = ap->a_vp;
181 struct thread *td = ap->a_td;
182 register struct iso_node *ip = VTOI(vp);
183 int error = 0;
184
185 if (prtactive && vrefcnt(vp) != 0)
186 vprint("cd9660_inactive: pushing active", vp);
187
188 ip->i_flag = 0;
189 VOP_UNLOCK(vp, 0, td);
190 /*
191 * If we are done with the inode, reclaim it
192 * so that it can be reused immediately.
193 */
194 if (ip->inode.iso_mode == 0)
195 vrecycle(vp, NULL, td);
196 return error;
197}
198
199/*
200 * Reclaim an inode so that it can be used for other purposes.
201 */
202int
203cd9660_reclaim(ap)
204 struct vop_reclaim_args /* {
205 struct vnode *a_vp;
206 struct thread *a_td;
207 } */ *ap;
208{
209 register struct vnode *vp = ap->a_vp;
210 register struct iso_node *ip = VTOI(vp);
211
212 if (prtactive && vrefcnt(vp) != 0)
213 vprint("cd9660_reclaim: pushing active", vp);
214 /*
215 * Remove the inode from its hash chain.
216 */
217 cd9660_ihashrem(ip);
218 /*
219 * Purge old data structures associated with the inode.
220 */
221 cache_purge(vp);
222 if (ip->i_devvp) {
223 vrele(ip->i_devvp);
224 ip->i_devvp = 0;
225 }
226 FREE(vp->v_data, M_ISOFSNODE);
227 vp->v_data = NULL;
228 return (0);
229}
230
231/*
232 * File attributes
233 */
234void
235cd9660_defattr(isodir, inop, bp, ftype)
236 struct iso_directory_record *isodir;
237 struct iso_node *inop;
238 struct buf *bp;
239 enum ISO_FTYPE ftype;
240{
241 struct buf *bp2 = NULL;
242 struct iso_mnt *imp;
243 struct iso_extended_attributes *ap = NULL;
244 int off;
245
246 /* high sierra does not have timezone data, flag is one byte ahead */
247 if (isonum_711(ftype == ISO_FTYPE_HIGH_SIERRA?
248 &isodir->date[6]: isodir->flags)&2) {
249 inop->inode.iso_mode = S_IFDIR;
250 /*
251 * If we return 2, fts() will assume there are no subdirectories
252 * (just links for the path and .), so instead we return 1.
253 */
254 inop->inode.iso_links = 1;
255 } else {
256 inop->inode.iso_mode = S_IFREG;
257 inop->inode.iso_links = 1;
258 }
259 if (!bp
260 && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT)
261 && (off = isonum_711(isodir->ext_attr_length))) {
262 cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL,
263 &bp2);
264 bp = bp2;
265 }
266 if (bp) {
267 ap = (struct iso_extended_attributes *)bp->b_data;
268
269 if (isonum_711(ap->version) == 1) {
270 if (!(ap->perm[0]&0x40))
271 inop->inode.iso_mode |= VEXEC >> 6;
272 if (!(ap->perm[0]&0x10))
273 inop->inode.iso_mode |= VREAD >> 6;
274 if (!(ap->perm[0]&4))
275 inop->inode.iso_mode |= VEXEC >> 3;
276 if (!(ap->perm[0]&1))
277 inop->inode.iso_mode |= VREAD >> 3;
278 if (!(ap->perm[1]&0x40))
279 inop->inode.iso_mode |= VEXEC;
280 if (!(ap->perm[1]&0x10))
281 inop->inode.iso_mode |= VREAD;
282 inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */
283 inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */
284 } else
285 ap = NULL;
286 }
287 if (!ap) {
288 inop->inode.iso_mode |= VREAD|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6;
289 inop->inode.iso_uid = (uid_t)0;
290 inop->inode.iso_gid = (gid_t)0;
291 }
292 if (bp2)
293 brelse(bp2);
294}
295
296/*
297 * Time stamps
298 */
299void
300cd9660_deftstamp(isodir,inop,bp,ftype)
301 struct iso_directory_record *isodir;
302 struct iso_node *inop;
303 struct buf *bp;
304 enum ISO_FTYPE ftype;
305{
306 struct buf *bp2 = NULL;
307 struct iso_mnt *imp;
308 struct iso_extended_attributes *ap = NULL;
309 int off;
310
311 if (!bp
312 && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT)
313 && (off = isonum_711(isodir->ext_attr_length))) {
314 cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL,
315 &bp2);
316 bp = bp2;
317 }
318 if (bp) {
319 ap = (struct iso_extended_attributes *)bp->b_data;
320
321 if (ftype != ISO_FTYPE_HIGH_SIERRA
322 && isonum_711(ap->version) == 1) {
323 if (!cd9660_tstamp_conv17(ap->ftime,&inop->inode.iso_atime))
324 cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_atime);
325 if (!cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_ctime))
326 inop->inode.iso_ctime = inop->inode.iso_atime;
327 if (!cd9660_tstamp_conv17(ap->mtime,&inop->inode.iso_mtime))
328 inop->inode.iso_mtime = inop->inode.iso_ctime;
329 } else
330 ap = NULL;
331 }
332 if (!ap) {
333 cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime,ftype);
334 inop->inode.iso_atime = inop->inode.iso_ctime;
335 inop->inode.iso_mtime = inop->inode.iso_ctime;
336 }
337 if (bp2)
338 brelse(bp2);
339}
340
341int
342cd9660_tstamp_conv7(pi,pu,ftype)
343 u_char *pi;
344 struct timespec *pu;
345 enum ISO_FTYPE ftype;
346{
347 int crtime, days;
348 int y, m, d, hour, minute, second, tz;
349
350 y = pi[0] + 1900;
351 m = pi[1];
352 d = pi[2];
353 hour = pi[3];
354 minute = pi[4];
355 second = pi[5];
356 if(ftype != ISO_FTYPE_HIGH_SIERRA)
357 tz = pi[6];
358 else
359 /* original high sierra misses timezone data */
360 tz = 0;
361
362 if (y < 1970) {
363 pu->tv_sec = 0;
364 pu->tv_nsec = 0;
365 return 0;
366 } else {
367#ifdef ORIGINAL
368 /* computes day number relative to Sept. 19th,1989 */
369 /* don't even *THINK* about changing formula. It works! */
370 days = 367*(y-1980)-7*(y+(m+9)/12)/4-3*((y+(m-9)/7)/100+1)/4+275*m/9+d-100;
371#else
372 /*
373 * Changed :-) to make it relative to Jan. 1st, 1970
374 * and to disambiguate negative division
375 */
376 days = 367*(y-1960)-7*(y+(m+9)/12)/4-3*((y+(m+9)/12-1)/100+1)/4+275*m/9+d-239;
377#endif
378 crtime = ((((days * 24) + hour) * 60 + minute) * 60) + second;
379
380 /* timezone offset is unreliable on some disks */
381 if (-48 <= tz && tz <= 52)
382 crtime -= tz * 15 * 60;
383 }
384 pu->tv_sec = crtime;
385 pu->tv_nsec = 0;
386 return 1;
387}
388
389static u_int
390cd9660_chars2ui(begin,len)
391 u_char *begin;
392 int len;
393{
394 u_int rc;
395
396 for (rc = 0; --len >= 0;) {
397 rc *= 10;
398 rc += *begin++ - '0';
399 }
400 return rc;
401}
402
403int
404cd9660_tstamp_conv17(pi,pu)
405 u_char *pi;
406 struct timespec *pu;
407{
408 u_char buf[7];
409
410 /* year:"0001"-"9999" -> -1900 */
411 buf[0] = cd9660_chars2ui(pi,4) - 1900;
412
413 /* month: " 1"-"12" -> 1 - 12 */
414 buf[1] = cd9660_chars2ui(pi + 4,2);
415
416 /* day: " 1"-"31" -> 1 - 31 */
417 buf[2] = cd9660_chars2ui(pi + 6,2);
418
419 /* hour: " 0"-"23" -> 0 - 23 */
420 buf[3] = cd9660_chars2ui(pi + 8,2);
421
422 /* minute:" 0"-"59" -> 0 - 59 */
423 buf[4] = cd9660_chars2ui(pi + 10,2);
424
425 /* second:" 0"-"59" -> 0 - 59 */
426 buf[5] = cd9660_chars2ui(pi + 12,2);
427
428 /* difference of GMT */
429 buf[6] = pi[16];
430
431 return cd9660_tstamp_conv7(buf, pu, ISO_FTYPE_DEFAULT);
432}
433
434ino_t
435isodirino(isodir, imp)
436 struct iso_directory_record *isodir;
437 struct iso_mnt *imp;
438{
439 ino_t ino;
440
441 ino = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length))
442 << imp->im_bshift;
443 return (ino);
444}
| 44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/mount.h>
47#include <sys/bio.h>
48#include <sys/buf.h>
49#include <sys/vnode.h>
50#include <sys/malloc.h>
51#include <sys/stat.h>
52#include <sys/mutex.h>
53
54#include <isofs/cd9660/iso.h>
55#include <isofs/cd9660/cd9660_node.h>
56#include <isofs/cd9660/cd9660_mount.h>
57
58/*
59 * Structures associated with iso_node caching.
60 */
61static struct iso_node **isohashtbl;
62static u_long isohash;
63#define INOHASH(device, inum) ((minor(device) + ((inum)>>12)) & isohash)
64static struct mtx cd9660_ihash_mtx;
65
66static void cd9660_ihashrem(struct iso_node *);
67static unsigned cd9660_chars2ui(unsigned char *begin, int len);
68
69/*
70 * Initialize hash links for inodes and dnodes.
71 */
72int
73cd9660_init(vfsp)
74 struct vfsconf *vfsp;
75{
76
77 isohashtbl = hashinit(desiredvnodes, M_ISOFSMNT, &isohash);
78 mtx_init(&cd9660_ihash_mtx, "cd9660_ihash", NULL, MTX_DEF);
79 return (0);
80}
81
82int
83cd9660_uninit(vfsp)
84 struct vfsconf *vfsp;
85{
86
87 if (isohashtbl != NULL)
88 free(isohashtbl, M_ISOFSMNT);
89 return (0);
90}
91
92
93/*
94 * Use the device/inum pair to find the incore inode, and return a pointer
95 * to it. If it is in core, but locked, wait for it.
96 */
97int
98cd9660_ihashget(dev, inum, flags, vpp)
99 dev_t dev;
100 ino_t inum;
101 int flags;
102 struct vnode **vpp;
103{
104 struct thread *td = curthread; /* XXX */
105 struct iso_node *ip;
106 struct vnode *vp;
107 int error;
108
109 *vpp = NULL;
110loop:
111 mtx_lock(&cd9660_ihash_mtx);
112 for (ip = isohashtbl[INOHASH(dev, inum)]; ip; ip = ip->i_next) {
113 if (inum == ip->i_number && dev == ip->i_dev) {
114 vp = ITOV(ip);
115 mtx_lock(&vp->v_interlock);
116 mtx_unlock(&cd9660_ihash_mtx);
117 error = vget(vp, flags | LK_INTERLOCK, td);
118 if (error == ENOENT)
119 goto loop;
120 if (error)
121 return (error);
122 *vpp = vp;
123 return (0);
124 }
125 }
126 mtx_unlock(&cd9660_ihash_mtx);
127 return (0);
128}
129
130/*
131 * Insert the inode into the hash table, and return it locked.
132 */
133void
134cd9660_ihashins(ip)
135 struct iso_node *ip;
136{
137 struct iso_node **ipp, *iq;
138
139 mtx_lock(&cd9660_ihash_mtx);
140 ipp = &isohashtbl[INOHASH(ip->i_dev, ip->i_number)];
141 if ((iq = *ipp) != NULL)
142 iq->i_prev = &ip->i_next;
143 ip->i_next = iq;
144 ip->i_prev = ipp;
145 *ipp = ip;
146 mtx_unlock(&cd9660_ihash_mtx);
147
148 vn_lock(ITOV(ip), LK_EXCLUSIVE | LK_RETRY, curthread);
149}
150
151/*
152 * Remove the inode from the hash table.
153 */
154static void
155cd9660_ihashrem(ip)
156 register struct iso_node *ip;
157{
158 register struct iso_node *iq;
159
160 mtx_lock(&cd9660_ihash_mtx);
161 if ((iq = ip->i_next) != NULL)
162 iq->i_prev = ip->i_prev;
163 *ip->i_prev = iq;
164#ifdef DIAGNOSTIC
165 ip->i_next = NULL;
166 ip->i_prev = NULL;
167#endif
168 mtx_unlock(&cd9660_ihash_mtx);
169}
170
171/*
172 * Last reference to an inode, write the inode out and if necessary,
173 * truncate and deallocate the file.
174 */
175int
176cd9660_inactive(ap)
177 struct vop_inactive_args /* {
178 struct vnode *a_vp;
179 struct thread *a_td;
180 } */ *ap;
181{
182 struct vnode *vp = ap->a_vp;
183 struct thread *td = ap->a_td;
184 register struct iso_node *ip = VTOI(vp);
185 int error = 0;
186
187 if (prtactive && vrefcnt(vp) != 0)
188 vprint("cd9660_inactive: pushing active", vp);
189
190 ip->i_flag = 0;
191 VOP_UNLOCK(vp, 0, td);
192 /*
193 * If we are done with the inode, reclaim it
194 * so that it can be reused immediately.
195 */
196 if (ip->inode.iso_mode == 0)
197 vrecycle(vp, NULL, td);
198 return error;
199}
200
201/*
202 * Reclaim an inode so that it can be used for other purposes.
203 */
204int
205cd9660_reclaim(ap)
206 struct vop_reclaim_args /* {
207 struct vnode *a_vp;
208 struct thread *a_td;
209 } */ *ap;
210{
211 register struct vnode *vp = ap->a_vp;
212 register struct iso_node *ip = VTOI(vp);
213
214 if (prtactive && vrefcnt(vp) != 0)
215 vprint("cd9660_reclaim: pushing active", vp);
216 /*
217 * Remove the inode from its hash chain.
218 */
219 cd9660_ihashrem(ip);
220 /*
221 * Purge old data structures associated with the inode.
222 */
223 cache_purge(vp);
224 if (ip->i_devvp) {
225 vrele(ip->i_devvp);
226 ip->i_devvp = 0;
227 }
228 FREE(vp->v_data, M_ISOFSNODE);
229 vp->v_data = NULL;
230 return (0);
231}
232
233/*
234 * File attributes
235 */
236void
237cd9660_defattr(isodir, inop, bp, ftype)
238 struct iso_directory_record *isodir;
239 struct iso_node *inop;
240 struct buf *bp;
241 enum ISO_FTYPE ftype;
242{
243 struct buf *bp2 = NULL;
244 struct iso_mnt *imp;
245 struct iso_extended_attributes *ap = NULL;
246 int off;
247
248 /* high sierra does not have timezone data, flag is one byte ahead */
249 if (isonum_711(ftype == ISO_FTYPE_HIGH_SIERRA?
250 &isodir->date[6]: isodir->flags)&2) {
251 inop->inode.iso_mode = S_IFDIR;
252 /*
253 * If we return 2, fts() will assume there are no subdirectories
254 * (just links for the path and .), so instead we return 1.
255 */
256 inop->inode.iso_links = 1;
257 } else {
258 inop->inode.iso_mode = S_IFREG;
259 inop->inode.iso_links = 1;
260 }
261 if (!bp
262 && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT)
263 && (off = isonum_711(isodir->ext_attr_length))) {
264 cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL,
265 &bp2);
266 bp = bp2;
267 }
268 if (bp) {
269 ap = (struct iso_extended_attributes *)bp->b_data;
270
271 if (isonum_711(ap->version) == 1) {
272 if (!(ap->perm[0]&0x40))
273 inop->inode.iso_mode |= VEXEC >> 6;
274 if (!(ap->perm[0]&0x10))
275 inop->inode.iso_mode |= VREAD >> 6;
276 if (!(ap->perm[0]&4))
277 inop->inode.iso_mode |= VEXEC >> 3;
278 if (!(ap->perm[0]&1))
279 inop->inode.iso_mode |= VREAD >> 3;
280 if (!(ap->perm[1]&0x40))
281 inop->inode.iso_mode |= VEXEC;
282 if (!(ap->perm[1]&0x10))
283 inop->inode.iso_mode |= VREAD;
284 inop->inode.iso_uid = isonum_723(ap->owner); /* what about 0? */
285 inop->inode.iso_gid = isonum_723(ap->group); /* what about 0? */
286 } else
287 ap = NULL;
288 }
289 if (!ap) {
290 inop->inode.iso_mode |= VREAD|VEXEC|(VREAD|VEXEC)>>3|(VREAD|VEXEC)>>6;
291 inop->inode.iso_uid = (uid_t)0;
292 inop->inode.iso_gid = (gid_t)0;
293 }
294 if (bp2)
295 brelse(bp2);
296}
297
298/*
299 * Time stamps
300 */
301void
302cd9660_deftstamp(isodir,inop,bp,ftype)
303 struct iso_directory_record *isodir;
304 struct iso_node *inop;
305 struct buf *bp;
306 enum ISO_FTYPE ftype;
307{
308 struct buf *bp2 = NULL;
309 struct iso_mnt *imp;
310 struct iso_extended_attributes *ap = NULL;
311 int off;
312
313 if (!bp
314 && ((imp = inop->i_mnt)->im_flags & ISOFSMNT_EXTATT)
315 && (off = isonum_711(isodir->ext_attr_length))) {
316 cd9660_blkatoff(ITOV(inop), (off_t)-(off << imp->im_bshift), NULL,
317 &bp2);
318 bp = bp2;
319 }
320 if (bp) {
321 ap = (struct iso_extended_attributes *)bp->b_data;
322
323 if (ftype != ISO_FTYPE_HIGH_SIERRA
324 && isonum_711(ap->version) == 1) {
325 if (!cd9660_tstamp_conv17(ap->ftime,&inop->inode.iso_atime))
326 cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_atime);
327 if (!cd9660_tstamp_conv17(ap->ctime,&inop->inode.iso_ctime))
328 inop->inode.iso_ctime = inop->inode.iso_atime;
329 if (!cd9660_tstamp_conv17(ap->mtime,&inop->inode.iso_mtime))
330 inop->inode.iso_mtime = inop->inode.iso_ctime;
331 } else
332 ap = NULL;
333 }
334 if (!ap) {
335 cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime,ftype);
336 inop->inode.iso_atime = inop->inode.iso_ctime;
337 inop->inode.iso_mtime = inop->inode.iso_ctime;
338 }
339 if (bp2)
340 brelse(bp2);
341}
342
343int
344cd9660_tstamp_conv7(pi,pu,ftype)
345 u_char *pi;
346 struct timespec *pu;
347 enum ISO_FTYPE ftype;
348{
349 int crtime, days;
350 int y, m, d, hour, minute, second, tz;
351
352 y = pi[0] + 1900;
353 m = pi[1];
354 d = pi[2];
355 hour = pi[3];
356 minute = pi[4];
357 second = pi[5];
358 if(ftype != ISO_FTYPE_HIGH_SIERRA)
359 tz = pi[6];
360 else
361 /* original high sierra misses timezone data */
362 tz = 0;
363
364 if (y < 1970) {
365 pu->tv_sec = 0;
366 pu->tv_nsec = 0;
367 return 0;
368 } else {
369#ifdef ORIGINAL
370 /* computes day number relative to Sept. 19th,1989 */
371 /* don't even *THINK* about changing formula. It works! */
372 days = 367*(y-1980)-7*(y+(m+9)/12)/4-3*((y+(m-9)/7)/100+1)/4+275*m/9+d-100;
373#else
374 /*
375 * Changed :-) to make it relative to Jan. 1st, 1970
376 * and to disambiguate negative division
377 */
378 days = 367*(y-1960)-7*(y+(m+9)/12)/4-3*((y+(m+9)/12-1)/100+1)/4+275*m/9+d-239;
379#endif
380 crtime = ((((days * 24) + hour) * 60 + minute) * 60) + second;
381
382 /* timezone offset is unreliable on some disks */
383 if (-48 <= tz && tz <= 52)
384 crtime -= tz * 15 * 60;
385 }
386 pu->tv_sec = crtime;
387 pu->tv_nsec = 0;
388 return 1;
389}
390
391static u_int
392cd9660_chars2ui(begin,len)
393 u_char *begin;
394 int len;
395{
396 u_int rc;
397
398 for (rc = 0; --len >= 0;) {
399 rc *= 10;
400 rc += *begin++ - '0';
401 }
402 return rc;
403}
404
405int
406cd9660_tstamp_conv17(pi,pu)
407 u_char *pi;
408 struct timespec *pu;
409{
410 u_char buf[7];
411
412 /* year:"0001"-"9999" -> -1900 */
413 buf[0] = cd9660_chars2ui(pi,4) - 1900;
414
415 /* month: " 1"-"12" -> 1 - 12 */
416 buf[1] = cd9660_chars2ui(pi + 4,2);
417
418 /* day: " 1"-"31" -> 1 - 31 */
419 buf[2] = cd9660_chars2ui(pi + 6,2);
420
421 /* hour: " 0"-"23" -> 0 - 23 */
422 buf[3] = cd9660_chars2ui(pi + 8,2);
423
424 /* minute:" 0"-"59" -> 0 - 59 */
425 buf[4] = cd9660_chars2ui(pi + 10,2);
426
427 /* second:" 0"-"59" -> 0 - 59 */
428 buf[5] = cd9660_chars2ui(pi + 12,2);
429
430 /* difference of GMT */
431 buf[6] = pi[16];
432
433 return cd9660_tstamp_conv7(buf, pu, ISO_FTYPE_DEFAULT);
434}
435
436ino_t
437isodirino(isodir, imp)
438 struct iso_directory_record *isodir;
439 struct iso_mnt *imp;
440{
441 ino_t ino;
442
443 ino = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length))
444 << imp->im_bshift;
445 return (ino);
446}
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