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cd9660_vnops.c (45773) cd9660_vnops.c (47028)
1/*-
2 * Copyright (c) 1994
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_vnops.c 8.19 (Berkeley) 5/27/95
1/*-
2 * Copyright (c) 1994
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_vnops.c 8.19 (Berkeley) 5/27/95
39 * $Id: cd9660_vnops.c,v 1.54 1999/01/27 21:49:55 dillon Exp $
39 * $Id: cd9660_vnops.c,v 1.55 1999/04/18 10:58:02 dcs Exp $
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/namei.h>
45#include <sys/kernel.h>
46#include <sys/stat.h>
47#include <sys/buf.h>
48#include <sys/mount.h>
49#include <sys/vnode.h>
50#include <miscfs/specfs/specdev.h>
51#include <miscfs/fifofs/fifo.h>
52#include <sys/malloc.h>
53#include <sys/dirent.h>
54#include <sys/unistd.h>
55
56#include <vm/vm.h>
57#include <vm/vm_zone.h>
58#include <vm/vnode_pager.h>
59
60#include <isofs/cd9660/iso.h>
61#include <isofs/cd9660/cd9660_node.h>
62#include <isofs/cd9660/iso_rrip.h>
63
64static int cd9660_setattr __P((struct vop_setattr_args *));
65static int cd9660_access __P((struct vop_access_args *));
66static int cd9660_getattr __P((struct vop_getattr_args *));
67static int cd9660_pathconf __P((struct vop_pathconf_args *));
68static int cd9660_read __P((struct vop_read_args *));
69struct isoreaddir;
70static int iso_uiodir __P((struct isoreaddir *idp, struct dirent *dp,
71 off_t off));
72static int iso_shipdir __P((struct isoreaddir *idp));
73static int cd9660_readdir __P((struct vop_readdir_args *));
74static int cd9660_readlink __P((struct vop_readlink_args *ap));
75static int cd9660_abortop __P((struct vop_abortop_args *));
76static int cd9660_strategy __P((struct vop_strategy_args *));
77static int cd9660_print __P((struct vop_print_args *));
78static int cd9660_getpages __P((struct vop_getpages_args *));
79static int cd9660_putpages __P((struct vop_putpages_args *));
80
81/*
82 * Setattr call. Only allowed for block and character special devices.
83 */
84int
85cd9660_setattr(ap)
86 struct vop_setattr_args /* {
87 struct vnodeop_desc *a_desc;
88 struct vnode *a_vp;
89 struct vattr *a_vap;
90 struct ucred *a_cred;
91 struct proc *a_p;
92 } */ *ap;
93{
94 struct vnode *vp = ap->a_vp;
95 struct vattr *vap = ap->a_vap;
96
97 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
98 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
99 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL)
100 return (EROFS);
101 if (vap->va_size != (u_quad_t)VNOVAL) {
102 switch (vp->v_type) {
103 case VDIR:
104 return (EISDIR);
105 case VLNK:
106 case VREG:
107 return (EROFS);
108 case VCHR:
109 case VBLK:
110 case VSOCK:
111 case VFIFO:
112 case VNON:
113 case VBAD:
114 return (0);
115 }
116 }
117 return (0);
118}
119
120/*
121 * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC.
122 * The mode is shifted to select the owner/group/other fields. The
123 * super user is granted all permissions.
124 */
125/* ARGSUSED */
126static int
127cd9660_access(ap)
128 struct vop_access_args /* {
129 struct vnode *a_vp;
130 int a_mode;
131 struct ucred *a_cred;
132 struct proc *a_p;
133 } */ *ap;
134{
135 struct vnode *vp = ap->a_vp;
136 struct iso_node *ip = VTOI(vp);
137 struct ucred *cred = ap->a_cred;
138 mode_t mask, mode = ap->a_mode;
139 gid_t *gp;
140 int i;
141
142 /*
143 * Disallow write attempts unless the file is a socket,
144 * fifo, or a block or character device resident on the
145 * file system.
146 */
147 if (mode & VWRITE) {
148 switch (vp->v_type) {
149 case VDIR:
150 case VLNK:
151 case VREG:
152 return (EROFS);
153 /* NOT REACHED */
154 default:
155 break;
156 }
157 }
158
159 /* User id 0 always gets access. */
160 if (cred->cr_uid == 0)
161 return (0);
162
163 mask = 0;
164
165 /* Otherwise, check the owner. */
166 if (cred->cr_uid == ip->inode.iso_uid) {
167 if (mode & VEXEC)
168 mask |= S_IXUSR;
169 if (mode & VREAD)
170 mask |= S_IRUSR;
171 if (mode & VWRITE)
172 mask |= S_IWUSR;
173 return ((ip->inode.iso_mode & mask) == mask ? 0 : EACCES);
174 }
175
176 /* Otherwise, check the groups. */
177 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
178 if (ip->inode.iso_gid == *gp) {
179 if (mode & VEXEC)
180 mask |= S_IXGRP;
181 if (mode & VREAD)
182 mask |= S_IRGRP;
183 if (mode & VWRITE)
184 mask |= S_IWGRP;
185 return ((ip->inode.iso_mode & mask) == mask ?
186 0 : EACCES);
187 }
188
189 /* Otherwise, check everyone else. */
190 if (mode & VEXEC)
191 mask |= S_IXOTH;
192 if (mode & VREAD)
193 mask |= S_IROTH;
194 if (mode & VWRITE)
195 mask |= S_IWOTH;
196 return ((ip->inode.iso_mode & mask) == mask ? 0 : EACCES);
197}
198
199static int
200cd9660_getattr(ap)
201 struct vop_getattr_args /* {
202 struct vnode *a_vp;
203 struct vattr *a_vap;
204 struct ucred *a_cred;
205 struct proc *a_p;
206 } */ *ap;
207
208{
209 struct vnode *vp = ap->a_vp;
210 register struct vattr *vap = ap->a_vap;
211 register struct iso_node *ip = VTOI(vp);
212
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/namei.h>
45#include <sys/kernel.h>
46#include <sys/stat.h>
47#include <sys/buf.h>
48#include <sys/mount.h>
49#include <sys/vnode.h>
50#include <miscfs/specfs/specdev.h>
51#include <miscfs/fifofs/fifo.h>
52#include <sys/malloc.h>
53#include <sys/dirent.h>
54#include <sys/unistd.h>
55
56#include <vm/vm.h>
57#include <vm/vm_zone.h>
58#include <vm/vnode_pager.h>
59
60#include <isofs/cd9660/iso.h>
61#include <isofs/cd9660/cd9660_node.h>
62#include <isofs/cd9660/iso_rrip.h>
63
64static int cd9660_setattr __P((struct vop_setattr_args *));
65static int cd9660_access __P((struct vop_access_args *));
66static int cd9660_getattr __P((struct vop_getattr_args *));
67static int cd9660_pathconf __P((struct vop_pathconf_args *));
68static int cd9660_read __P((struct vop_read_args *));
69struct isoreaddir;
70static int iso_uiodir __P((struct isoreaddir *idp, struct dirent *dp,
71 off_t off));
72static int iso_shipdir __P((struct isoreaddir *idp));
73static int cd9660_readdir __P((struct vop_readdir_args *));
74static int cd9660_readlink __P((struct vop_readlink_args *ap));
75static int cd9660_abortop __P((struct vop_abortop_args *));
76static int cd9660_strategy __P((struct vop_strategy_args *));
77static int cd9660_print __P((struct vop_print_args *));
78static int cd9660_getpages __P((struct vop_getpages_args *));
79static int cd9660_putpages __P((struct vop_putpages_args *));
80
81/*
82 * Setattr call. Only allowed for block and character special devices.
83 */
84int
85cd9660_setattr(ap)
86 struct vop_setattr_args /* {
87 struct vnodeop_desc *a_desc;
88 struct vnode *a_vp;
89 struct vattr *a_vap;
90 struct ucred *a_cred;
91 struct proc *a_p;
92 } */ *ap;
93{
94 struct vnode *vp = ap->a_vp;
95 struct vattr *vap = ap->a_vap;
96
97 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
98 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
99 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL)
100 return (EROFS);
101 if (vap->va_size != (u_quad_t)VNOVAL) {
102 switch (vp->v_type) {
103 case VDIR:
104 return (EISDIR);
105 case VLNK:
106 case VREG:
107 return (EROFS);
108 case VCHR:
109 case VBLK:
110 case VSOCK:
111 case VFIFO:
112 case VNON:
113 case VBAD:
114 return (0);
115 }
116 }
117 return (0);
118}
119
120/*
121 * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC.
122 * The mode is shifted to select the owner/group/other fields. The
123 * super user is granted all permissions.
124 */
125/* ARGSUSED */
126static int
127cd9660_access(ap)
128 struct vop_access_args /* {
129 struct vnode *a_vp;
130 int a_mode;
131 struct ucred *a_cred;
132 struct proc *a_p;
133 } */ *ap;
134{
135 struct vnode *vp = ap->a_vp;
136 struct iso_node *ip = VTOI(vp);
137 struct ucred *cred = ap->a_cred;
138 mode_t mask, mode = ap->a_mode;
139 gid_t *gp;
140 int i;
141
142 /*
143 * Disallow write attempts unless the file is a socket,
144 * fifo, or a block or character device resident on the
145 * file system.
146 */
147 if (mode & VWRITE) {
148 switch (vp->v_type) {
149 case VDIR:
150 case VLNK:
151 case VREG:
152 return (EROFS);
153 /* NOT REACHED */
154 default:
155 break;
156 }
157 }
158
159 /* User id 0 always gets access. */
160 if (cred->cr_uid == 0)
161 return (0);
162
163 mask = 0;
164
165 /* Otherwise, check the owner. */
166 if (cred->cr_uid == ip->inode.iso_uid) {
167 if (mode & VEXEC)
168 mask |= S_IXUSR;
169 if (mode & VREAD)
170 mask |= S_IRUSR;
171 if (mode & VWRITE)
172 mask |= S_IWUSR;
173 return ((ip->inode.iso_mode & mask) == mask ? 0 : EACCES);
174 }
175
176 /* Otherwise, check the groups. */
177 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
178 if (ip->inode.iso_gid == *gp) {
179 if (mode & VEXEC)
180 mask |= S_IXGRP;
181 if (mode & VREAD)
182 mask |= S_IRGRP;
183 if (mode & VWRITE)
184 mask |= S_IWGRP;
185 return ((ip->inode.iso_mode & mask) == mask ?
186 0 : EACCES);
187 }
188
189 /* Otherwise, check everyone else. */
190 if (mode & VEXEC)
191 mask |= S_IXOTH;
192 if (mode & VREAD)
193 mask |= S_IROTH;
194 if (mode & VWRITE)
195 mask |= S_IWOTH;
196 return ((ip->inode.iso_mode & mask) == mask ? 0 : EACCES);
197}
198
199static int
200cd9660_getattr(ap)
201 struct vop_getattr_args /* {
202 struct vnode *a_vp;
203 struct vattr *a_vap;
204 struct ucred *a_cred;
205 struct proc *a_p;
206 } */ *ap;
207
208{
209 struct vnode *vp = ap->a_vp;
210 register struct vattr *vap = ap->a_vap;
211 register struct iso_node *ip = VTOI(vp);
212
213 vap->va_fsid = ip->i_dev;
213 vap->va_fsid = dev2udev(ip->i_dev);
214 vap->va_fileid = ip->i_number;
215
216 vap->va_mode = ip->inode.iso_mode;
217 vap->va_nlink = ip->inode.iso_links;
218 vap->va_uid = ip->inode.iso_uid;
219 vap->va_gid = ip->inode.iso_gid;
220 vap->va_atime = ip->inode.iso_atime;
221 vap->va_mtime = ip->inode.iso_mtime;
222 vap->va_ctime = ip->inode.iso_ctime;
223 vap->va_rdev = ip->inode.iso_rdev;
224
225 vap->va_size = (u_quad_t) ip->i_size;
226 if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) {
227 struct vop_readlink_args rdlnk;
228 struct iovec aiov;
229 struct uio auio;
230 char *cp;
231
232 MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK);
233 aiov.iov_base = cp;
234 aiov.iov_len = MAXPATHLEN;
235 auio.uio_iov = &aiov;
236 auio.uio_iovcnt = 1;
237 auio.uio_offset = 0;
238 auio.uio_rw = UIO_READ;
239 auio.uio_segflg = UIO_SYSSPACE;
240 auio.uio_procp = ap->a_p;
241 auio.uio_resid = MAXPATHLEN;
242 rdlnk.a_uio = &auio;
243 rdlnk.a_vp = ap->a_vp;
244 rdlnk.a_cred = ap->a_cred;
245 if (cd9660_readlink(&rdlnk) == 0)
246 vap->va_size = MAXPATHLEN - auio.uio_resid;
247 FREE(cp, M_TEMP);
248 }
249 vap->va_flags = 0;
250 vap->va_gen = 1;
251 vap->va_blocksize = ip->i_mnt->logical_block_size;
252 vap->va_bytes = (u_quad_t) ip->i_size;
253 vap->va_type = vp->v_type;
254 vap->va_filerev = 0;
255 return (0);
256}
257
258/*
259 * Vnode op for reading.
260 */
261static int
262cd9660_read(ap)
263 struct vop_read_args /* {
264 struct vnode *a_vp;
265 struct uio *a_uio;
266 int a_ioflag;
267 struct ucred *a_cred;
268 } */ *ap;
269{
270 struct vnode *vp = ap->a_vp;
271 register struct uio *uio = ap->a_uio;
272 register struct iso_node *ip = VTOI(vp);
273 register struct iso_mnt *imp;
274 struct buf *bp;
275 daddr_t lbn, rablock;
276 off_t diff;
277 int rasize, error = 0;
278 long size, n, on;
279
280 if (uio->uio_resid == 0)
281 return (0);
282 if (uio->uio_offset < 0)
283 return (EINVAL);
284 ip->i_flag |= IN_ACCESS;
285 imp = ip->i_mnt;
286 do {
287 lbn = lblkno(imp, uio->uio_offset);
288 on = blkoff(imp, uio->uio_offset);
289 n = min((u_int)(imp->logical_block_size - on),
290 uio->uio_resid);
291 diff = (off_t)ip->i_size - uio->uio_offset;
292 if (diff <= 0)
293 return (0);
294 if (diff < n)
295 n = diff;
296 size = blksize(imp, ip, lbn);
297 rablock = lbn + 1;
298 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
299 if (lblktosize(imp, rablock) < ip->i_size)
300 error = cluster_read(vp, (off_t)ip->i_size,
301 lbn, size, NOCRED, uio->uio_resid,
302 (ap->a_ioflag >> 16), &bp);
303 else
304 error = bread(vp, lbn, size, NOCRED, &bp);
305 } else {
306 if (vp->v_lastr + 1 == lbn &&
307 lblktosize(imp, rablock) < ip->i_size) {
308 rasize = blksize(imp, ip, rablock);
309 error = breadn(vp, lbn, size, &rablock,
310 &rasize, 1, NOCRED, &bp);
311 } else
312 error = bread(vp, lbn, size, NOCRED, &bp);
313 }
314 vp->v_lastr = lbn;
315 n = min(n, size - bp->b_resid);
316 if (error) {
317 brelse(bp);
318 return (error);
319 }
320
321 error = uiomove(bp->b_data + on, (int)n, uio);
322 brelse(bp);
323 } while (error == 0 && uio->uio_resid > 0 && n != 0);
324 return (error);
325}
326
327/*
328 * Structure for reading directories
329 */
330struct isoreaddir {
331 struct dirent saveent;
332 struct dirent assocent;
333 struct dirent current;
334 off_t saveoff;
335 off_t assocoff;
336 off_t curroff;
337 struct uio *uio;
338 off_t uio_off;
339 int eofflag;
340 u_long *cookies;
341 int ncookies;
342};
343
344int
345iso_uiodir(idp,dp,off)
346 struct isoreaddir *idp;
347 struct dirent *dp;
348 off_t off;
349{
350 int error;
351
352 dp->d_name[dp->d_namlen] = 0;
353 dp->d_reclen = GENERIC_DIRSIZ(dp);
354
355 if (idp->uio->uio_resid < dp->d_reclen) {
356 idp->eofflag = 0;
357 return (-1);
358 }
359
360 if (idp->cookies) {
361 if (idp->ncookies <= 0) {
362 idp->eofflag = 0;
363 return (-1);
364 }
365
366 *idp->cookies++ = off;
367 --idp->ncookies;
368 }
369
370 if ((error = uiomove((caddr_t) dp,dp->d_reclen,idp->uio)) != 0)
371 return (error);
372 idp->uio_off = off;
373 return (0);
374}
375
376int
377iso_shipdir(idp)
378 struct isoreaddir *idp;
379{
380 struct dirent *dp;
381 int cl, sl, assoc;
382 int error;
383 char *cname, *sname;
384
385 cl = idp->current.d_namlen;
386 cname = idp->current.d_name;
387assoc = (cl > 1) && (*cname == ASSOCCHAR);
388 if (assoc) {
389 cl--;
390 cname++;
391 }
392
393 dp = &idp->saveent;
394 sname = dp->d_name;
395 if (!(sl = dp->d_namlen)) {
396 dp = &idp->assocent;
397 sname = dp->d_name + 1;
398 sl = dp->d_namlen - 1;
399 }
400 if (sl > 0) {
401 if (sl != cl
402 || bcmp(sname,cname,sl)) {
403 if (idp->assocent.d_namlen) {
404 if ((error = iso_uiodir(idp,&idp->assocent,idp->assocoff)) != 0)
405 return (error);
406 idp->assocent.d_namlen = 0;
407 }
408 if (idp->saveent.d_namlen) {
409 if ((error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) != 0)
410 return (error);
411 idp->saveent.d_namlen = 0;
412 }
413 }
414 }
415 idp->current.d_reclen = GENERIC_DIRSIZ(&idp->current);
416 if (assoc) {
417 idp->assocoff = idp->curroff;
418 bcopy(&idp->current,&idp->assocent,idp->current.d_reclen);
419 } else {
420 idp->saveoff = idp->curroff;
421 bcopy(&idp->current,&idp->saveent,idp->current.d_reclen);
422 }
423 return (0);
424}
425
426/*
427 * Vnode op for readdir
428 */
429static int
430cd9660_readdir(ap)
431 struct vop_readdir_args /* {
432 struct vnode *a_vp;
433 struct uio *a_uio;
434 struct ucred *a_cred;
435 int *a_eofflag;
436 int *a_ncookies;
437 u_long *a_cookies;
438 } */ *ap;
439{
440 register struct uio *uio = ap->a_uio;
441 struct isoreaddir *idp;
442 struct vnode *vdp = ap->a_vp;
443 struct iso_node *dp;
444 struct iso_mnt *imp;
445 struct buf *bp = NULL;
446 struct iso_directory_record *ep;
447 int entryoffsetinblock;
448 doff_t endsearch;
449 u_long bmask;
450 int error = 0;
451 int reclen;
452 u_short namelen;
453 int ncookies = 0;
454 u_long *cookies = NULL;
455
456 dp = VTOI(vdp);
457 imp = dp->i_mnt;
458 bmask = imp->im_bmask;
459
460 MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK);
461 idp->saveent.d_namlen = idp->assocent.d_namlen = 0;
462 /*
463 * XXX
464 * Is it worth trying to figure out the type?
465 */
466 idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type =
467 DT_UNKNOWN;
468 idp->uio = uio;
469 if (ap->a_ncookies == NULL) {
470 idp->cookies = NULL;
471 } else {
472 /*
473 * Guess the number of cookies needed.
474 */
475 ncookies = uio->uio_resid / 16;
476 MALLOC(cookies, u_long *, ncookies * sizeof(u_int), M_TEMP,
477 M_WAITOK);
478 idp->cookies = cookies;
479 idp->ncookies = ncookies;
480 }
481 idp->eofflag = 1;
482 idp->curroff = uio->uio_offset;
483
484 if ((entryoffsetinblock = idp->curroff & bmask) &&
485 (error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) {
486 FREE(idp, M_TEMP);
487 return (error);
488 }
489 endsearch = dp->i_size;
490
491 while (idp->curroff < endsearch) {
492 /*
493 * If offset is on a block boundary,
494 * read the next directory block.
495 * Release previous if it exists.
496 */
497 if ((idp->curroff & bmask) == 0) {
498 if (bp != NULL)
499 brelse(bp);
500 if ((error =
501 cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp)) != 0)
502 break;
503 entryoffsetinblock = 0;
504 }
505 /*
506 * Get pointer to next entry.
507 */
508 ep = (struct iso_directory_record *)
509 ((char *)bp->b_data + entryoffsetinblock);
510
511 reclen = isonum_711(ep->length);
512 if (reclen == 0) {
513 /* skip to next block, if any */
514 idp->curroff =
515 (idp->curroff & ~bmask) + imp->logical_block_size;
516 continue;
517 }
518
519 if (reclen < ISO_DIRECTORY_RECORD_SIZE) {
520 error = EINVAL;
521 /* illegal entry, stop */
522 break;
523 }
524
525 if (entryoffsetinblock + reclen > imp->logical_block_size) {
526 error = EINVAL;
527 /* illegal directory, so stop looking */
528 break;
529 }
530
531 idp->current.d_namlen = isonum_711(ep->name_len);
532
533 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) {
534 error = EINVAL;
535 /* illegal entry, stop */
536 break;
537 }
538
539 if (isonum_711(ep->flags)&2)
540 idp->current.d_fileno = isodirino(ep, imp);
541 else
542 idp->current.d_fileno = dbtob(bp->b_blkno) +
543 entryoffsetinblock;
544
545 idp->curroff += reclen;
546
547 switch (imp->iso_ftype) {
548 case ISO_FTYPE_RRIP:
549 cd9660_rrip_getname(ep,idp->current.d_name, &namelen,
550 &idp->current.d_fileno,imp);
551 idp->current.d_namlen = (u_char)namelen;
552 if (idp->current.d_namlen)
553 error = iso_uiodir(idp,&idp->current,idp->curroff);
554 break;
555 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/
556 strcpy(idp->current.d_name,"..");
557 if (idp->current.d_namlen == 1 && ep->name[0] == 0) {
558 idp->current.d_namlen = 1;
559 error = iso_uiodir(idp,&idp->current,idp->curroff);
560 } else if (idp->current.d_namlen == 1 && ep->name[0] == 1) {
561 idp->current.d_namlen = 2;
562 error = iso_uiodir(idp,&idp->current,idp->curroff);
563 } else {
564 isofntrans(ep->name,idp->current.d_namlen,
565 idp->current.d_name, &namelen,
566 imp->iso_ftype == ISO_FTYPE_9660,
567 isonum_711(ep->flags)&4,
568 imp->joliet_level);
569 idp->current.d_namlen = (u_char)namelen;
570 if (imp->iso_ftype == ISO_FTYPE_DEFAULT)
571 error = iso_shipdir(idp);
572 else
573 error = iso_uiodir(idp,&idp->current,idp->curroff);
574 }
575 }
576 if (error)
577 break;
578
579 entryoffsetinblock += reclen;
580 }
581
582 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) {
583 idp->current.d_namlen = 0;
584 error = iso_shipdir(idp);
585 }
586 if (error < 0)
587 error = 0;
588
589 if (ap->a_ncookies != NULL) {
590 if (error)
591 free(cookies, M_TEMP);
592 else {
593 /*
594 * Work out the number of cookies actually used.
595 */
596 *ap->a_ncookies = ncookies - idp->ncookies;
597 *ap->a_cookies = cookies;
598 }
599 }
600
601 if (bp)
602 brelse (bp);
603
604 uio->uio_offset = idp->uio_off;
605 *ap->a_eofflag = idp->eofflag;
606
607 FREE(idp, M_TEMP);
608
609 return (error);
610}
611
612/*
613 * Return target name of a symbolic link
614 * Shouldn't we get the parent vnode and read the data from there?
615 * This could eventually result in deadlocks in cd9660_lookup.
616 * But otherwise the block read here is in the block buffer two times.
617 */
618typedef struct iso_directory_record ISODIR;
619typedef struct iso_node ISONODE;
620typedef struct iso_mnt ISOMNT;
621static int
622cd9660_readlink(ap)
623 struct vop_readlink_args /* {
624 struct vnode *a_vp;
625 struct uio *a_uio;
626 struct ucred *a_cred;
627 } */ *ap;
628{
629 ISONODE *ip;
630 ISODIR *dirp;
631 ISOMNT *imp;
632 struct buf *bp;
633 struct uio *uio;
634 u_short symlen;
635 int error;
636 char *symname;
637
638 ip = VTOI(ap->a_vp);
639 imp = ip->i_mnt;
640 uio = ap->a_uio;
641
642 if (imp->iso_ftype != ISO_FTYPE_RRIP)
643 return (EINVAL);
644
645 /*
646 * Get parents directory record block that this inode included.
647 */
648 error = bread(imp->im_devvp,
649 (ip->i_number >> imp->im_bshift) <<
650 (imp->im_bshift - DEV_BSHIFT),
651 imp->logical_block_size, NOCRED, &bp);
652 if (error) {
653 brelse(bp);
654 return (EINVAL);
655 }
656
657 /*
658 * Setup the directory pointer for this inode
659 */
660 dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask));
661
662 /*
663 * Just make sure, we have a right one....
664 * 1: Check not cross boundary on block
665 */
666 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length)
667 > (unsigned)imp->logical_block_size) {
668 brelse(bp);
669 return (EINVAL);
670 }
671
672 /*
673 * Now get a buffer
674 * Abuse a namei buffer for now.
675 */
676 if (uio->uio_segflg == UIO_SYSSPACE)
677 symname = uio->uio_iov->iov_base;
678 else
679 symname = zalloc(namei_zone);
680
681 /*
682 * Ok, we just gathering a symbolic name in SL record.
683 */
684 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) {
685 if (uio->uio_segflg != UIO_SYSSPACE)
686 zfree(namei_zone, symname);
687 brelse(bp);
688 return (EINVAL);
689 }
690 /*
691 * Don't forget before you leave from home ;-)
692 */
693 brelse(bp);
694
695 /*
696 * return with the symbolic name to caller's.
697 */
698 if (uio->uio_segflg != UIO_SYSSPACE) {
699 error = uiomove(symname, symlen, uio);
700 zfree(namei_zone, symname);
701 return (error);
702 }
703 uio->uio_resid -= symlen;
704 uio->uio_iov->iov_base += symlen;
705 uio->uio_iov->iov_len -= symlen;
706 return (0);
707}
708
709/*
710 * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually
711 * done. If a buffer has been saved in anticipation of a CREATE, delete it.
712 */
713static int
714cd9660_abortop(ap)
715 struct vop_abortop_args /* {
716 struct vnode *a_dvp;
717 struct componentname *a_cnp;
718 } */ *ap;
719{
720 if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
721 zfree(namei_zone, ap->a_cnp->cn_pnbuf);
722 return (0);
723}
724
725/*
726 * Calculate the logical to physical mapping if not done already,
727 * then call the device strategy routine.
728 */
729static int
730cd9660_strategy(ap)
731 struct vop_strategy_args /* {
732 struct buf *a_vp;
733 struct buf *a_bp;
734 } */ *ap;
735{
736 register struct buf *bp = ap->a_bp;
737 register struct vnode *vp = bp->b_vp;
738 register struct iso_node *ip;
739 int error;
740
741 ip = VTOI(vp);
742 if (vp->v_type == VBLK || vp->v_type == VCHR)
743 panic("cd9660_strategy: spec");
744 if (bp->b_blkno == bp->b_lblkno) {
745 if ((error =
746 VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL, NULL))) {
747 bp->b_error = error;
748 bp->b_flags |= B_ERROR;
749 biodone(bp);
750 return (error);
751 }
752 if ((long)bp->b_blkno == -1)
753 clrbuf(bp);
754 }
755 if ((long)bp->b_blkno == -1) {
756 biodone(bp);
757 return (0);
758 }
759 vp = ip->i_devvp;
760 bp->b_dev = vp->v_rdev;
761 VOP_STRATEGY(vp, bp);
762 return (0);
763}
764
765/*
766 * Print out the contents of an inode.
767 */
768static int
769cd9660_print(ap)
770 struct vop_print_args /* {
771 struct vnode *a_vp;
772 } */ *ap;
773{
774
775 printf("tag VT_ISOFS, isofs vnode\n");
776 return (0);
777}
778
779/*
780 * Return POSIX pathconf information applicable to cd9660 filesystems.
781 */
782static int
783cd9660_pathconf(ap)
784 struct vop_pathconf_args /* {
785 struct vnode *a_vp;
786 int a_name;
787 register_t *a_retval;
788 } */ *ap;
789{
790
791 switch (ap->a_name) {
792 case _PC_LINK_MAX:
793 *ap->a_retval = 1;
794 return (0);
795 case _PC_NAME_MAX:
796 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP)
797 *ap->a_retval = NAME_MAX;
798 else
799 *ap->a_retval = 37;
800 return (0);
801 case _PC_PATH_MAX:
802 *ap->a_retval = PATH_MAX;
803 return (0);
804 case _PC_PIPE_BUF:
805 *ap->a_retval = PIPE_BUF;
806 return (0);
807 case _PC_CHOWN_RESTRICTED:
808 *ap->a_retval = 1;
809 return (0);
810 case _PC_NO_TRUNC:
811 *ap->a_retval = 1;
812 return (0);
813 default:
814 return (EINVAL);
815 }
816 /* NOTREACHED */
817}
818
819/*
820 * get page routine
821 *
822 * XXX By default, wimp out... note that a_offset is ignored (and always
823 * XXX has been).
824 */
825int
826cd9660_getpages(ap)
827 struct vop_getpages_args *ap;
828{
829 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
830 ap->a_reqpage);
831}
832
833/*
834 * put page routine
835 *
836 * XXX By default, wimp out... note that a_offset is ignored (and always
837 * XXX has been).
838 */
839int
840cd9660_putpages(ap)
841 struct vop_putpages_args *ap;
842{
843 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
844 ap->a_sync, ap->a_rtvals);
845}
846
847/*
848 * Global vfs data structures for cd9660
849 */
850vop_t **cd9660_vnodeop_p;
851static struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = {
852 { &vop_default_desc, (vop_t *) vop_defaultop },
853 { &vop_abortop_desc, (vop_t *) cd9660_abortop },
854 { &vop_access_desc, (vop_t *) cd9660_access },
855 { &vop_bmap_desc, (vop_t *) cd9660_bmap },
856 { &vop_cachedlookup_desc, (vop_t *) cd9660_lookup },
857 { &vop_getattr_desc, (vop_t *) cd9660_getattr },
858 { &vop_inactive_desc, (vop_t *) cd9660_inactive },
859 { &vop_islocked_desc, (vop_t *) vop_stdislocked },
860 { &vop_lock_desc, (vop_t *) vop_stdlock },
861 { &vop_lookup_desc, (vop_t *) vfs_cache_lookup },
862 { &vop_pathconf_desc, (vop_t *) cd9660_pathconf },
863 { &vop_print_desc, (vop_t *) cd9660_print },
864 { &vop_read_desc, (vop_t *) cd9660_read },
865 { &vop_readdir_desc, (vop_t *) cd9660_readdir },
866 { &vop_readlink_desc, (vop_t *) cd9660_readlink },
867 { &vop_reclaim_desc, (vop_t *) cd9660_reclaim },
868 { &vop_setattr_desc, (vop_t *) cd9660_setattr },
869 { &vop_strategy_desc, (vop_t *) cd9660_strategy },
870 { &vop_unlock_desc, (vop_t *) vop_stdunlock },
871 { &vop_getpages_desc, (vop_t *) cd9660_getpages },
872 { &vop_putpages_desc, (vop_t *) cd9660_putpages },
873 { NULL, NULL }
874};
875static struct vnodeopv_desc cd9660_vnodeop_opv_desc =
876 { &cd9660_vnodeop_p, cd9660_vnodeop_entries };
877VNODEOP_SET(cd9660_vnodeop_opv_desc);
878
879/*
880 * Special device vnode ops
881 */
882vop_t **cd9660_specop_p;
883static struct vnodeopv_entry_desc cd9660_specop_entries[] = {
884 { &vop_default_desc, (vop_t *) spec_vnoperate },
885 { &vop_access_desc, (vop_t *) cd9660_access },
886 { &vop_getattr_desc, (vop_t *) cd9660_getattr },
887 { &vop_inactive_desc, (vop_t *) cd9660_inactive },
888 { &vop_islocked_desc, (vop_t *) vop_stdislocked },
889 { &vop_lock_desc, (vop_t *) vop_stdlock },
890 { &vop_print_desc, (vop_t *) cd9660_print },
891 { &vop_reclaim_desc, (vop_t *) cd9660_reclaim },
892 { &vop_setattr_desc, (vop_t *) cd9660_setattr },
893 { &vop_unlock_desc, (vop_t *) vop_stdunlock },
894 { NULL, NULL }
895};
896static struct vnodeopv_desc cd9660_specop_opv_desc =
897 { &cd9660_specop_p, cd9660_specop_entries };
898VNODEOP_SET(cd9660_specop_opv_desc);
899
900vop_t **cd9660_fifoop_p;
901static struct vnodeopv_entry_desc cd9660_fifoop_entries[] = {
902 { &vop_default_desc, (vop_t *) fifo_vnoperate },
903 { &vop_access_desc, (vop_t *) cd9660_access },
904 { &vop_getattr_desc, (vop_t *) cd9660_getattr },
905 { &vop_inactive_desc, (vop_t *) cd9660_inactive },
906 { &vop_islocked_desc, (vop_t *) vop_stdislocked },
907 { &vop_lock_desc, (vop_t *) vop_stdlock },
908 { &vop_print_desc, (vop_t *) cd9660_print },
909 { &vop_reclaim_desc, (vop_t *) cd9660_reclaim },
910 { &vop_setattr_desc, (vop_t *) cd9660_setattr },
911 { &vop_unlock_desc, (vop_t *) vop_stdunlock },
912 { NULL, NULL }
913};
914static struct vnodeopv_desc cd9660_fifoop_opv_desc =
915 { &cd9660_fifoop_p, cd9660_fifoop_entries };
916
917VNODEOP_SET(cd9660_fifoop_opv_desc);
214 vap->va_fileid = ip->i_number;
215
216 vap->va_mode = ip->inode.iso_mode;
217 vap->va_nlink = ip->inode.iso_links;
218 vap->va_uid = ip->inode.iso_uid;
219 vap->va_gid = ip->inode.iso_gid;
220 vap->va_atime = ip->inode.iso_atime;
221 vap->va_mtime = ip->inode.iso_mtime;
222 vap->va_ctime = ip->inode.iso_ctime;
223 vap->va_rdev = ip->inode.iso_rdev;
224
225 vap->va_size = (u_quad_t) ip->i_size;
226 if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) {
227 struct vop_readlink_args rdlnk;
228 struct iovec aiov;
229 struct uio auio;
230 char *cp;
231
232 MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK);
233 aiov.iov_base = cp;
234 aiov.iov_len = MAXPATHLEN;
235 auio.uio_iov = &aiov;
236 auio.uio_iovcnt = 1;
237 auio.uio_offset = 0;
238 auio.uio_rw = UIO_READ;
239 auio.uio_segflg = UIO_SYSSPACE;
240 auio.uio_procp = ap->a_p;
241 auio.uio_resid = MAXPATHLEN;
242 rdlnk.a_uio = &auio;
243 rdlnk.a_vp = ap->a_vp;
244 rdlnk.a_cred = ap->a_cred;
245 if (cd9660_readlink(&rdlnk) == 0)
246 vap->va_size = MAXPATHLEN - auio.uio_resid;
247 FREE(cp, M_TEMP);
248 }
249 vap->va_flags = 0;
250 vap->va_gen = 1;
251 vap->va_blocksize = ip->i_mnt->logical_block_size;
252 vap->va_bytes = (u_quad_t) ip->i_size;
253 vap->va_type = vp->v_type;
254 vap->va_filerev = 0;
255 return (0);
256}
257
258/*
259 * Vnode op for reading.
260 */
261static int
262cd9660_read(ap)
263 struct vop_read_args /* {
264 struct vnode *a_vp;
265 struct uio *a_uio;
266 int a_ioflag;
267 struct ucred *a_cred;
268 } */ *ap;
269{
270 struct vnode *vp = ap->a_vp;
271 register struct uio *uio = ap->a_uio;
272 register struct iso_node *ip = VTOI(vp);
273 register struct iso_mnt *imp;
274 struct buf *bp;
275 daddr_t lbn, rablock;
276 off_t diff;
277 int rasize, error = 0;
278 long size, n, on;
279
280 if (uio->uio_resid == 0)
281 return (0);
282 if (uio->uio_offset < 0)
283 return (EINVAL);
284 ip->i_flag |= IN_ACCESS;
285 imp = ip->i_mnt;
286 do {
287 lbn = lblkno(imp, uio->uio_offset);
288 on = blkoff(imp, uio->uio_offset);
289 n = min((u_int)(imp->logical_block_size - on),
290 uio->uio_resid);
291 diff = (off_t)ip->i_size - uio->uio_offset;
292 if (diff <= 0)
293 return (0);
294 if (diff < n)
295 n = diff;
296 size = blksize(imp, ip, lbn);
297 rablock = lbn + 1;
298 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
299 if (lblktosize(imp, rablock) < ip->i_size)
300 error = cluster_read(vp, (off_t)ip->i_size,
301 lbn, size, NOCRED, uio->uio_resid,
302 (ap->a_ioflag >> 16), &bp);
303 else
304 error = bread(vp, lbn, size, NOCRED, &bp);
305 } else {
306 if (vp->v_lastr + 1 == lbn &&
307 lblktosize(imp, rablock) < ip->i_size) {
308 rasize = blksize(imp, ip, rablock);
309 error = breadn(vp, lbn, size, &rablock,
310 &rasize, 1, NOCRED, &bp);
311 } else
312 error = bread(vp, lbn, size, NOCRED, &bp);
313 }
314 vp->v_lastr = lbn;
315 n = min(n, size - bp->b_resid);
316 if (error) {
317 brelse(bp);
318 return (error);
319 }
320
321 error = uiomove(bp->b_data + on, (int)n, uio);
322 brelse(bp);
323 } while (error == 0 && uio->uio_resid > 0 && n != 0);
324 return (error);
325}
326
327/*
328 * Structure for reading directories
329 */
330struct isoreaddir {
331 struct dirent saveent;
332 struct dirent assocent;
333 struct dirent current;
334 off_t saveoff;
335 off_t assocoff;
336 off_t curroff;
337 struct uio *uio;
338 off_t uio_off;
339 int eofflag;
340 u_long *cookies;
341 int ncookies;
342};
343
344int
345iso_uiodir(idp,dp,off)
346 struct isoreaddir *idp;
347 struct dirent *dp;
348 off_t off;
349{
350 int error;
351
352 dp->d_name[dp->d_namlen] = 0;
353 dp->d_reclen = GENERIC_DIRSIZ(dp);
354
355 if (idp->uio->uio_resid < dp->d_reclen) {
356 idp->eofflag = 0;
357 return (-1);
358 }
359
360 if (idp->cookies) {
361 if (idp->ncookies <= 0) {
362 idp->eofflag = 0;
363 return (-1);
364 }
365
366 *idp->cookies++ = off;
367 --idp->ncookies;
368 }
369
370 if ((error = uiomove((caddr_t) dp,dp->d_reclen,idp->uio)) != 0)
371 return (error);
372 idp->uio_off = off;
373 return (0);
374}
375
376int
377iso_shipdir(idp)
378 struct isoreaddir *idp;
379{
380 struct dirent *dp;
381 int cl, sl, assoc;
382 int error;
383 char *cname, *sname;
384
385 cl = idp->current.d_namlen;
386 cname = idp->current.d_name;
387assoc = (cl > 1) && (*cname == ASSOCCHAR);
388 if (assoc) {
389 cl--;
390 cname++;
391 }
392
393 dp = &idp->saveent;
394 sname = dp->d_name;
395 if (!(sl = dp->d_namlen)) {
396 dp = &idp->assocent;
397 sname = dp->d_name + 1;
398 sl = dp->d_namlen - 1;
399 }
400 if (sl > 0) {
401 if (sl != cl
402 || bcmp(sname,cname,sl)) {
403 if (idp->assocent.d_namlen) {
404 if ((error = iso_uiodir(idp,&idp->assocent,idp->assocoff)) != 0)
405 return (error);
406 idp->assocent.d_namlen = 0;
407 }
408 if (idp->saveent.d_namlen) {
409 if ((error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) != 0)
410 return (error);
411 idp->saveent.d_namlen = 0;
412 }
413 }
414 }
415 idp->current.d_reclen = GENERIC_DIRSIZ(&idp->current);
416 if (assoc) {
417 idp->assocoff = idp->curroff;
418 bcopy(&idp->current,&idp->assocent,idp->current.d_reclen);
419 } else {
420 idp->saveoff = idp->curroff;
421 bcopy(&idp->current,&idp->saveent,idp->current.d_reclen);
422 }
423 return (0);
424}
425
426/*
427 * Vnode op for readdir
428 */
429static int
430cd9660_readdir(ap)
431 struct vop_readdir_args /* {
432 struct vnode *a_vp;
433 struct uio *a_uio;
434 struct ucred *a_cred;
435 int *a_eofflag;
436 int *a_ncookies;
437 u_long *a_cookies;
438 } */ *ap;
439{
440 register struct uio *uio = ap->a_uio;
441 struct isoreaddir *idp;
442 struct vnode *vdp = ap->a_vp;
443 struct iso_node *dp;
444 struct iso_mnt *imp;
445 struct buf *bp = NULL;
446 struct iso_directory_record *ep;
447 int entryoffsetinblock;
448 doff_t endsearch;
449 u_long bmask;
450 int error = 0;
451 int reclen;
452 u_short namelen;
453 int ncookies = 0;
454 u_long *cookies = NULL;
455
456 dp = VTOI(vdp);
457 imp = dp->i_mnt;
458 bmask = imp->im_bmask;
459
460 MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK);
461 idp->saveent.d_namlen = idp->assocent.d_namlen = 0;
462 /*
463 * XXX
464 * Is it worth trying to figure out the type?
465 */
466 idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type =
467 DT_UNKNOWN;
468 idp->uio = uio;
469 if (ap->a_ncookies == NULL) {
470 idp->cookies = NULL;
471 } else {
472 /*
473 * Guess the number of cookies needed.
474 */
475 ncookies = uio->uio_resid / 16;
476 MALLOC(cookies, u_long *, ncookies * sizeof(u_int), M_TEMP,
477 M_WAITOK);
478 idp->cookies = cookies;
479 idp->ncookies = ncookies;
480 }
481 idp->eofflag = 1;
482 idp->curroff = uio->uio_offset;
483
484 if ((entryoffsetinblock = idp->curroff & bmask) &&
485 (error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) {
486 FREE(idp, M_TEMP);
487 return (error);
488 }
489 endsearch = dp->i_size;
490
491 while (idp->curroff < endsearch) {
492 /*
493 * If offset is on a block boundary,
494 * read the next directory block.
495 * Release previous if it exists.
496 */
497 if ((idp->curroff & bmask) == 0) {
498 if (bp != NULL)
499 brelse(bp);
500 if ((error =
501 cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp)) != 0)
502 break;
503 entryoffsetinblock = 0;
504 }
505 /*
506 * Get pointer to next entry.
507 */
508 ep = (struct iso_directory_record *)
509 ((char *)bp->b_data + entryoffsetinblock);
510
511 reclen = isonum_711(ep->length);
512 if (reclen == 0) {
513 /* skip to next block, if any */
514 idp->curroff =
515 (idp->curroff & ~bmask) + imp->logical_block_size;
516 continue;
517 }
518
519 if (reclen < ISO_DIRECTORY_RECORD_SIZE) {
520 error = EINVAL;
521 /* illegal entry, stop */
522 break;
523 }
524
525 if (entryoffsetinblock + reclen > imp->logical_block_size) {
526 error = EINVAL;
527 /* illegal directory, so stop looking */
528 break;
529 }
530
531 idp->current.d_namlen = isonum_711(ep->name_len);
532
533 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) {
534 error = EINVAL;
535 /* illegal entry, stop */
536 break;
537 }
538
539 if (isonum_711(ep->flags)&2)
540 idp->current.d_fileno = isodirino(ep, imp);
541 else
542 idp->current.d_fileno = dbtob(bp->b_blkno) +
543 entryoffsetinblock;
544
545 idp->curroff += reclen;
546
547 switch (imp->iso_ftype) {
548 case ISO_FTYPE_RRIP:
549 cd9660_rrip_getname(ep,idp->current.d_name, &namelen,
550 &idp->current.d_fileno,imp);
551 idp->current.d_namlen = (u_char)namelen;
552 if (idp->current.d_namlen)
553 error = iso_uiodir(idp,&idp->current,idp->curroff);
554 break;
555 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/
556 strcpy(idp->current.d_name,"..");
557 if (idp->current.d_namlen == 1 && ep->name[0] == 0) {
558 idp->current.d_namlen = 1;
559 error = iso_uiodir(idp,&idp->current,idp->curroff);
560 } else if (idp->current.d_namlen == 1 && ep->name[0] == 1) {
561 idp->current.d_namlen = 2;
562 error = iso_uiodir(idp,&idp->current,idp->curroff);
563 } else {
564 isofntrans(ep->name,idp->current.d_namlen,
565 idp->current.d_name, &namelen,
566 imp->iso_ftype == ISO_FTYPE_9660,
567 isonum_711(ep->flags)&4,
568 imp->joliet_level);
569 idp->current.d_namlen = (u_char)namelen;
570 if (imp->iso_ftype == ISO_FTYPE_DEFAULT)
571 error = iso_shipdir(idp);
572 else
573 error = iso_uiodir(idp,&idp->current,idp->curroff);
574 }
575 }
576 if (error)
577 break;
578
579 entryoffsetinblock += reclen;
580 }
581
582 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) {
583 idp->current.d_namlen = 0;
584 error = iso_shipdir(idp);
585 }
586 if (error < 0)
587 error = 0;
588
589 if (ap->a_ncookies != NULL) {
590 if (error)
591 free(cookies, M_TEMP);
592 else {
593 /*
594 * Work out the number of cookies actually used.
595 */
596 *ap->a_ncookies = ncookies - idp->ncookies;
597 *ap->a_cookies = cookies;
598 }
599 }
600
601 if (bp)
602 brelse (bp);
603
604 uio->uio_offset = idp->uio_off;
605 *ap->a_eofflag = idp->eofflag;
606
607 FREE(idp, M_TEMP);
608
609 return (error);
610}
611
612/*
613 * Return target name of a symbolic link
614 * Shouldn't we get the parent vnode and read the data from there?
615 * This could eventually result in deadlocks in cd9660_lookup.
616 * But otherwise the block read here is in the block buffer two times.
617 */
618typedef struct iso_directory_record ISODIR;
619typedef struct iso_node ISONODE;
620typedef struct iso_mnt ISOMNT;
621static int
622cd9660_readlink(ap)
623 struct vop_readlink_args /* {
624 struct vnode *a_vp;
625 struct uio *a_uio;
626 struct ucred *a_cred;
627 } */ *ap;
628{
629 ISONODE *ip;
630 ISODIR *dirp;
631 ISOMNT *imp;
632 struct buf *bp;
633 struct uio *uio;
634 u_short symlen;
635 int error;
636 char *symname;
637
638 ip = VTOI(ap->a_vp);
639 imp = ip->i_mnt;
640 uio = ap->a_uio;
641
642 if (imp->iso_ftype != ISO_FTYPE_RRIP)
643 return (EINVAL);
644
645 /*
646 * Get parents directory record block that this inode included.
647 */
648 error = bread(imp->im_devvp,
649 (ip->i_number >> imp->im_bshift) <<
650 (imp->im_bshift - DEV_BSHIFT),
651 imp->logical_block_size, NOCRED, &bp);
652 if (error) {
653 brelse(bp);
654 return (EINVAL);
655 }
656
657 /*
658 * Setup the directory pointer for this inode
659 */
660 dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask));
661
662 /*
663 * Just make sure, we have a right one....
664 * 1: Check not cross boundary on block
665 */
666 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length)
667 > (unsigned)imp->logical_block_size) {
668 brelse(bp);
669 return (EINVAL);
670 }
671
672 /*
673 * Now get a buffer
674 * Abuse a namei buffer for now.
675 */
676 if (uio->uio_segflg == UIO_SYSSPACE)
677 symname = uio->uio_iov->iov_base;
678 else
679 symname = zalloc(namei_zone);
680
681 /*
682 * Ok, we just gathering a symbolic name in SL record.
683 */
684 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) {
685 if (uio->uio_segflg != UIO_SYSSPACE)
686 zfree(namei_zone, symname);
687 brelse(bp);
688 return (EINVAL);
689 }
690 /*
691 * Don't forget before you leave from home ;-)
692 */
693 brelse(bp);
694
695 /*
696 * return with the symbolic name to caller's.
697 */
698 if (uio->uio_segflg != UIO_SYSSPACE) {
699 error = uiomove(symname, symlen, uio);
700 zfree(namei_zone, symname);
701 return (error);
702 }
703 uio->uio_resid -= symlen;
704 uio->uio_iov->iov_base += symlen;
705 uio->uio_iov->iov_len -= symlen;
706 return (0);
707}
708
709/*
710 * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually
711 * done. If a buffer has been saved in anticipation of a CREATE, delete it.
712 */
713static int
714cd9660_abortop(ap)
715 struct vop_abortop_args /* {
716 struct vnode *a_dvp;
717 struct componentname *a_cnp;
718 } */ *ap;
719{
720 if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
721 zfree(namei_zone, ap->a_cnp->cn_pnbuf);
722 return (0);
723}
724
725/*
726 * Calculate the logical to physical mapping if not done already,
727 * then call the device strategy routine.
728 */
729static int
730cd9660_strategy(ap)
731 struct vop_strategy_args /* {
732 struct buf *a_vp;
733 struct buf *a_bp;
734 } */ *ap;
735{
736 register struct buf *bp = ap->a_bp;
737 register struct vnode *vp = bp->b_vp;
738 register struct iso_node *ip;
739 int error;
740
741 ip = VTOI(vp);
742 if (vp->v_type == VBLK || vp->v_type == VCHR)
743 panic("cd9660_strategy: spec");
744 if (bp->b_blkno == bp->b_lblkno) {
745 if ((error =
746 VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL, NULL))) {
747 bp->b_error = error;
748 bp->b_flags |= B_ERROR;
749 biodone(bp);
750 return (error);
751 }
752 if ((long)bp->b_blkno == -1)
753 clrbuf(bp);
754 }
755 if ((long)bp->b_blkno == -1) {
756 biodone(bp);
757 return (0);
758 }
759 vp = ip->i_devvp;
760 bp->b_dev = vp->v_rdev;
761 VOP_STRATEGY(vp, bp);
762 return (0);
763}
764
765/*
766 * Print out the contents of an inode.
767 */
768static int
769cd9660_print(ap)
770 struct vop_print_args /* {
771 struct vnode *a_vp;
772 } */ *ap;
773{
774
775 printf("tag VT_ISOFS, isofs vnode\n");
776 return (0);
777}
778
779/*
780 * Return POSIX pathconf information applicable to cd9660 filesystems.
781 */
782static int
783cd9660_pathconf(ap)
784 struct vop_pathconf_args /* {
785 struct vnode *a_vp;
786 int a_name;
787 register_t *a_retval;
788 } */ *ap;
789{
790
791 switch (ap->a_name) {
792 case _PC_LINK_MAX:
793 *ap->a_retval = 1;
794 return (0);
795 case _PC_NAME_MAX:
796 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP)
797 *ap->a_retval = NAME_MAX;
798 else
799 *ap->a_retval = 37;
800 return (0);
801 case _PC_PATH_MAX:
802 *ap->a_retval = PATH_MAX;
803 return (0);
804 case _PC_PIPE_BUF:
805 *ap->a_retval = PIPE_BUF;
806 return (0);
807 case _PC_CHOWN_RESTRICTED:
808 *ap->a_retval = 1;
809 return (0);
810 case _PC_NO_TRUNC:
811 *ap->a_retval = 1;
812 return (0);
813 default:
814 return (EINVAL);
815 }
816 /* NOTREACHED */
817}
818
819/*
820 * get page routine
821 *
822 * XXX By default, wimp out... note that a_offset is ignored (and always
823 * XXX has been).
824 */
825int
826cd9660_getpages(ap)
827 struct vop_getpages_args *ap;
828{
829 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
830 ap->a_reqpage);
831}
832
833/*
834 * put page routine
835 *
836 * XXX By default, wimp out... note that a_offset is ignored (and always
837 * XXX has been).
838 */
839int
840cd9660_putpages(ap)
841 struct vop_putpages_args *ap;
842{
843 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
844 ap->a_sync, ap->a_rtvals);
845}
846
847/*
848 * Global vfs data structures for cd9660
849 */
850vop_t **cd9660_vnodeop_p;
851static struct vnodeopv_entry_desc cd9660_vnodeop_entries[] = {
852 { &vop_default_desc, (vop_t *) vop_defaultop },
853 { &vop_abortop_desc, (vop_t *) cd9660_abortop },
854 { &vop_access_desc, (vop_t *) cd9660_access },
855 { &vop_bmap_desc, (vop_t *) cd9660_bmap },
856 { &vop_cachedlookup_desc, (vop_t *) cd9660_lookup },
857 { &vop_getattr_desc, (vop_t *) cd9660_getattr },
858 { &vop_inactive_desc, (vop_t *) cd9660_inactive },
859 { &vop_islocked_desc, (vop_t *) vop_stdislocked },
860 { &vop_lock_desc, (vop_t *) vop_stdlock },
861 { &vop_lookup_desc, (vop_t *) vfs_cache_lookup },
862 { &vop_pathconf_desc, (vop_t *) cd9660_pathconf },
863 { &vop_print_desc, (vop_t *) cd9660_print },
864 { &vop_read_desc, (vop_t *) cd9660_read },
865 { &vop_readdir_desc, (vop_t *) cd9660_readdir },
866 { &vop_readlink_desc, (vop_t *) cd9660_readlink },
867 { &vop_reclaim_desc, (vop_t *) cd9660_reclaim },
868 { &vop_setattr_desc, (vop_t *) cd9660_setattr },
869 { &vop_strategy_desc, (vop_t *) cd9660_strategy },
870 { &vop_unlock_desc, (vop_t *) vop_stdunlock },
871 { &vop_getpages_desc, (vop_t *) cd9660_getpages },
872 { &vop_putpages_desc, (vop_t *) cd9660_putpages },
873 { NULL, NULL }
874};
875static struct vnodeopv_desc cd9660_vnodeop_opv_desc =
876 { &cd9660_vnodeop_p, cd9660_vnodeop_entries };
877VNODEOP_SET(cd9660_vnodeop_opv_desc);
878
879/*
880 * Special device vnode ops
881 */
882vop_t **cd9660_specop_p;
883static struct vnodeopv_entry_desc cd9660_specop_entries[] = {
884 { &vop_default_desc, (vop_t *) spec_vnoperate },
885 { &vop_access_desc, (vop_t *) cd9660_access },
886 { &vop_getattr_desc, (vop_t *) cd9660_getattr },
887 { &vop_inactive_desc, (vop_t *) cd9660_inactive },
888 { &vop_islocked_desc, (vop_t *) vop_stdislocked },
889 { &vop_lock_desc, (vop_t *) vop_stdlock },
890 { &vop_print_desc, (vop_t *) cd9660_print },
891 { &vop_reclaim_desc, (vop_t *) cd9660_reclaim },
892 { &vop_setattr_desc, (vop_t *) cd9660_setattr },
893 { &vop_unlock_desc, (vop_t *) vop_stdunlock },
894 { NULL, NULL }
895};
896static struct vnodeopv_desc cd9660_specop_opv_desc =
897 { &cd9660_specop_p, cd9660_specop_entries };
898VNODEOP_SET(cd9660_specop_opv_desc);
899
900vop_t **cd9660_fifoop_p;
901static struct vnodeopv_entry_desc cd9660_fifoop_entries[] = {
902 { &vop_default_desc, (vop_t *) fifo_vnoperate },
903 { &vop_access_desc, (vop_t *) cd9660_access },
904 { &vop_getattr_desc, (vop_t *) cd9660_getattr },
905 { &vop_inactive_desc, (vop_t *) cd9660_inactive },
906 { &vop_islocked_desc, (vop_t *) vop_stdislocked },
907 { &vop_lock_desc, (vop_t *) vop_stdlock },
908 { &vop_print_desc, (vop_t *) cd9660_print },
909 { &vop_reclaim_desc, (vop_t *) cd9660_reclaim },
910 { &vop_setattr_desc, (vop_t *) cd9660_setattr },
911 { &vop_unlock_desc, (vop_t *) vop_stdunlock },
912 { NULL, NULL }
913};
914static struct vnodeopv_desc cd9660_fifoop_opv_desc =
915 { &cd9660_fifoop_p, cd9660_fifoop_entries };
916
917VNODEOP_SET(cd9660_fifoop_opv_desc);