1 /* $NetBSD: smbfs_vnops.c,v 1.93 2014/12/21 10:48:53 hannken Exp $ */
2
3 /*-
4 * Copyright (c) 2003 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jaromir Dolecek.
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 2000-2001 Boris Popov
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by Boris Popov.
47 * 4. Neither the name of the author nor the names of any co-contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 *
63 * FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.15 2001/12/20 15:56:45 bp Exp
64 */
65
66 #include <sys/cdefs.h>
67 __KERNEL_RCSID(0, "$NetBSD: smbfs_vnops.c,v 1.93 2014/12/21 10:48:53 hannken Exp $");
68
69 #include <sys/param.h>
70 #include <sys/systm.h>
71 #include <sys/namei.h>
72 #include <sys/kernel.h>
73 #include <sys/proc.h>
74 #include <sys/buf.h>
75 #include <sys/fcntl.h>
76 #include <sys/mount.h>
77 #include <sys/unistd.h>
78 #include <sys/vnode.h>
79 #include <sys/lockf.h>
80 #include <sys/kauth.h>
81 #include <sys/mallocvar.h>
82
83 #include <machine/limits.h>
84
85 #include <uvm/uvm.h>
86 #include <uvm/uvm_extern.h>
87
88 #include <netsmb/smb.h>
89 #include <netsmb/smb_conn.h>
90 #include <netsmb/smb_subr.h>
91
92 #include <fs/smbfs/smbfs.h>
93 #include <fs/smbfs/smbfs_node.h>
94 #include <fs/smbfs/smbfs_subr.h>
95
96 #include <miscfs/genfs/genfs.h>
97
98 /*
99 * Prototypes for SMBFS vnode operations
100 */
101 int smbfs_create(void *);
102 int smbfs_open(void *);
103 int smbfs_close(void *);
104 int smbfs_access(void *);
105 int smbfs_getattr(void *);
106 int smbfs_setattr(void *);
107 int smbfs_read(void *);
108 int smbfs_write(void *);
109 int smbfs_fsync(void *);
110 int smbfs_remove(void *);
111 int smbfs_link(void *);
112 int smbfs_lookup(void *);
113 int smbfs_rename(void *);
114 int smbfs_mkdir(void *);
115 int smbfs_rmdir(void *);
116 int smbfs_symlink(void *);
117 int smbfs_readdir(void *);
118 int smbfs_strategy(void *);
119 int smbfs_print(void *);
120 int smbfs_pathconf(void *ap);
121 int smbfs_advlock(void *);
122
123 int (**smbfs_vnodeop_p)(void *);
124 static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = {
125 { &vop_default_desc, vn_default_error },
126 { &vop_access_desc, smbfs_access },
127 { &vop_advlock_desc, smbfs_advlock },
128 { &vop_close_desc, smbfs_close },
129 { &vop_create_desc, smbfs_create },
130 { &vop_fallocate_desc, genfs_eopnotsupp },
131 { &vop_fdiscard_desc, genfs_eopnotsupp },
132 { &vop_fsync_desc, smbfs_fsync },
133 { &vop_getattr_desc, smbfs_getattr },
134 { &vop_getpages_desc, genfs_compat_getpages },
135 { &vop_inactive_desc, smbfs_inactive },
136 { &vop_ioctl_desc, genfs_enoioctl },
137 { &vop_islocked_desc, genfs_islocked },
138 { &vop_link_desc, smbfs_link },
139 { &vop_lock_desc, genfs_lock },
140 { &vop_lookup_desc, smbfs_lookup },
141 { &vop_mkdir_desc, smbfs_mkdir },
142 { &vop_mknod_desc, genfs_eopnotsupp },
143 { &vop_open_desc, smbfs_open },
144 { &vop_pathconf_desc, smbfs_pathconf },
145 { &vop_print_desc, smbfs_print },
146 { &vop_putpages_desc, genfs_putpages },
147 { &vop_read_desc, smbfs_read },
148 { &vop_readdir_desc, smbfs_readdir },
149 { &vop_reclaim_desc, smbfs_reclaim },
150 { &vop_remove_desc, smbfs_remove },
151 { &vop_rename_desc, smbfs_rename },
152 { &vop_rmdir_desc, smbfs_rmdir },
153 { &vop_setattr_desc, smbfs_setattr },
154 { &vop_strategy_desc, smbfs_strategy },
155 { &vop_symlink_desc, smbfs_symlink },
156 { &vop_unlock_desc, genfs_unlock },
157 { &vop_write_desc, smbfs_write },
158 { &vop_mmap_desc, genfs_mmap }, /* mmap */
159 { &vop_seek_desc, genfs_seek }, /* seek */
160 { &vop_kqfilter_desc, smbfs_kqfilter}, /* kqfilter */
161 { NULL, NULL }
162 };
163 const struct vnodeopv_desc smbfs_vnodeop_opv_desc =
164 { &smbfs_vnodeop_p, smbfs_vnodeop_entries };
165
166 static int
smbfs_check_possible(struct vnode * vp,struct smbnode * np,mode_t mode)167 smbfs_check_possible(struct vnode *vp, struct smbnode *np, mode_t mode)
168 {
169
170 /*
171 * Disallow write attempts on read-only file systems;
172 * unless the file is a socket, fifo, or a block or
173 * character device resident on the file system.
174 */
175 if (mode & VWRITE) {
176 switch (vp->v_type) {
177 case VREG:
178 case VDIR:
179 case VLNK:
180 if (vp->v_mount->mnt_flag & MNT_RDONLY)
181 return EROFS;
182 default:
183 break;
184 }
185 }
186
187 return 0;
188 }
189
190 static int
smbfs_check_permitted(struct vnode * vp,struct smbnode * np,mode_t mode,kauth_cred_t cred)191 smbfs_check_permitted(struct vnode *vp, struct smbnode *np, mode_t mode,
192 kauth_cred_t cred)
193 {
194 struct smbmount *smp = VTOSMBFS(vp);
195 mode_t file_mode = (vp->v_type == VDIR) ? smp->sm_args.dir_mode :
196 smp->sm_args.file_mode;
197
198 return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode,
199 vp->v_type, file_mode), vp, NULL, genfs_can_access(vp->v_type,
200 file_mode, smp->sm_args.uid, smp->sm_args.gid, mode, cred));
201 }
202
203 int
smbfs_access(void * v)204 smbfs_access(void *v)
205 {
206 struct vop_access_args /* {
207 struct vnode *a_vp;
208 int a_mode;
209 kauth_cred_t a_cred;
210 } */ *ap = v;
211 struct vnode *vp = ap->a_vp;
212 struct smbnode *np = VTOSMB(vp);
213 u_int acc_mode = ap->a_mode;
214 int error;
215 #ifdef SMB_VNODE_DEBUG
216 struct smbmount *smp = VTOSMBFS(vp);
217 #endif
218
219 SMBVDEBUG("file '%.*s', node mode=%o, acc mode=%x\n",
220 (int) np->n_nmlen, np->n_name,
221 (vp->v_type == VDIR) ? smp->sm_args.dir_mode : smp->sm_args.file_mode,
222 acc_mode);
223
224 error = smbfs_check_possible(vp, np, acc_mode);
225 if (error)
226 return error;
227
228 error = smbfs_check_permitted(vp, np, acc_mode, ap->a_cred);
229
230 return error;
231 }
232
233 /* ARGSUSED */
234 int
smbfs_open(void * v)235 smbfs_open(void *v)
236 {
237 struct vop_open_args /* {
238 struct vnode *a_vp;
239 int a_mode;
240 kauth_cred_t a_cred;
241 } */ *ap = v;
242 struct lwp *l = curlwp;
243 struct vnode *vp = ap->a_vp;
244 struct smbnode *np = VTOSMB(vp);
245 struct smb_cred scred;
246 struct vattr vattr;
247 u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share));
248 int error, accmode;
249
250 SMBVDEBUG("%.*s,%d\n", (int) np->n_nmlen, np->n_name,
251 (np->n_flag & NOPEN) != 0);
252 if (vp->v_type != VREG && vp->v_type != VDIR) {
253 SMBFSERR("open eacces vtype=%d\n", vp->v_type);
254 return EACCES;
255 }
256 if (vp->v_type == VDIR) {
257 if ((sv_caps & SMB_CAP_NT_SMBS) == 0) {
258 np->n_flag |= NOPEN;
259 return 0;
260 }
261 goto do_open; /* skip 'modified' check */
262 }
263
264 if (np->n_flag & NMODIFIED) {
265 if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR)
266 return error;
267 smbfs_attr_cacheremove(vp);
268 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
269 if (error)
270 return error;
271 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
272 } else {
273 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
274 if (error)
275 return error;
276 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
277 error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1);
278 if (error == EINTR)
279 return error;
280 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
281 }
282 }
283
284 do_open:
285 if ((np->n_flag & NOPEN) != 0)
286 return 0;
287
288 smb_makescred(&scred, l, ap->a_cred);
289 if (vp->v_type == VDIR)
290 error = smbfs_smb_ntcreatex(np,
291 SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred);
292 else {
293 /*
294 * Use DENYNONE to give unixy semantics of permitting
295 * everything not forbidden by permissions. Ie denial
296 * is up to server with clients/openers needing to use
297 * advisory locks for further control.
298 */
299 accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
300 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
301 accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
302 error = smbfs_smb_open(np, accmode, &scred);
303 if (error) {
304 if (ap->a_mode & FWRITE)
305 return EACCES;
306
307 error = smbfs_smb_open(np,
308 SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred);
309 }
310 }
311 if (!error)
312 np->n_flag |= NOPEN;
313 smbfs_attr_cacheremove(vp);
314 return error;
315 }
316
317 /*
318 * Close called.
319 */
320 int
smbfs_close(void * v)321 smbfs_close(void *v)
322 {
323 struct vop_close_args /* {
324 struct vnodeop_desc *a_desc;
325 struct vnode *a_vp;
326 int a_fflag;
327 kauth_cred_t a_cred;
328 } */ *ap = v;
329 int error;
330 struct lwp *l = curlwp;
331 struct vnode *vp = ap->a_vp;
332 struct smbnode *np = VTOSMB(vp);
333
334 /* Flush all file data */
335 error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1);
336 if (error)
337 return (error);
338
339 /*
340 * We must close the directory lookup context now, so that
341 * later directory changes would be properly detected.
342 * Ideally, the lookup routines should handle such case, and
343 * the context would be removed only in smbfs_inactive().
344 */
345 if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0) {
346 struct smb_share *ssp = np->n_mount->sm_share;
347 struct smb_cred scred;
348
349 smb_makescred(&scred, l, ap->a_cred);
350
351 if (np->n_dirseq != NULL) {
352 smbfs_findclose(np->n_dirseq, &scred);
353 np->n_dirseq = NULL;
354 }
355
356 if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_NT_SMBS)
357 smbfs_smb_close(ssp, np->n_fid, &np->n_mtime, &scred);
358
359 np->n_flag &= ~NOPEN;
360 smbfs_attr_cacheremove(vp);
361 }
362
363 return (0);
364 }
365
366 /*
367 * smbfs_getattr call from vfs.
368 */
369 int
smbfs_getattr(void * v)370 smbfs_getattr(void *v)
371 {
372 struct vop_getattr_args /* {
373 struct vnode *a_vp;
374 struct vattr *a_vap;
375 kauth_cred_t a_cred;
376 } */ *ap = v;
377 struct vnode *vp = ap->a_vp;
378 struct smbnode *np = VTOSMB(vp);
379 struct vattr *va=ap->a_vap;
380 struct smbfattr fattr;
381 struct smb_cred scred;
382 u_quad_t oldsize;
383 int error;
384
385 SMBVDEBUG("%p: '%.*s' isroot %d\n", vp,
386 (int) np->n_nmlen, np->n_name, (vp->v_vflag & VV_ROOT) != 0);
387
388 if ((error = smbfs_attr_cachelookup(vp, va)) == 0)
389 return (0);
390
391 SMBVDEBUG0("not in the cache\n");
392 smb_makescred(&scred, curlwp, ap->a_cred);
393 oldsize = np->n_size;
394 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred);
395 if (error) {
396 SMBVDEBUG("error %d\n", error);
397 return error;
398 }
399 smbfs_attr_cacheenter(vp, &fattr);
400 smbfs_attr_cachelookup(vp, va);
401 if ((np->n_flag & NOPEN) != 0)
402 np->n_size = oldsize;
403 return 0;
404 }
405
406 int
smbfs_setattr(void * v)407 smbfs_setattr(void *v)
408 {
409 struct vop_setattr_args /* {
410 struct vnode *a_vp;
411 struct vattr *a_vap;
412 kauth_cred_t a_cred;
413 } */ *ap = v;
414 struct lwp *l = curlwp;
415 struct vnode *vp = ap->a_vp;
416 struct smbnode *np = VTOSMB(vp);
417 struct vattr *vap = ap->a_vap;
418 struct timespec *mtime, *atime;
419 struct smb_cred scred;
420 struct smb_share *ssp = np->n_mount->sm_share;
421 struct smb_vc *vcp = SSTOVC(ssp);
422 u_quad_t tsize = 0;
423 int isreadonly, doclose, error = 0;
424
425 SMBVDEBUG0("\n");
426 if (vap->va_flags != VNOVAL)
427 return EOPNOTSUPP;
428 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
429 /*
430 * Disallow write attempts if the filesystem is mounted read-only.
431 */
432 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
433 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
434 vap->va_mode != (mode_t)VNOVAL) && isreadonly)
435 return EROFS;
436 smb_makescred(&scred, l, ap->a_cred);
437 if (vap->va_size != VNOVAL) {
438 switch (vp->v_type) {
439 case VDIR:
440 return EISDIR;
441 case VREG:
442 break;
443 default:
444 return EINVAL;
445 };
446 if (isreadonly)
447 return EROFS;
448 doclose = 0;
449 tsize = np->n_size;
450 np->n_size = vap->va_size;
451 uvm_vnp_setsize(vp, vap->va_size);
452 if ((np->n_flag & NOPEN) == 0) {
453 error = smbfs_smb_open(np,
454 SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred);
455 if (error == 0)
456 doclose = 1;
457 }
458 if (error == 0)
459 error = smbfs_smb_setfsize(np, vap->va_size, &scred);
460 if (doclose)
461 smbfs_smb_close(ssp, np->n_fid, NULL, &scred);
462 if (error) {
463 np->n_size = tsize;
464 uvm_vnp_setsize(vp, tsize);
465 return (error);
466 }
467 }
468 mtime = atime = NULL;
469 if (vap->va_mtime.tv_sec != VNOVAL)
470 mtime = &vap->va_mtime;
471 if (vap->va_atime.tv_sec != VNOVAL)
472 atime = &vap->va_atime;
473 if (mtime != atime) {
474 error = kauth_authorize_vnode(ap->a_cred,
475 KAUTH_VNODE_WRITE_TIMES, ap->a_vp, NULL,
476 genfs_can_chtimes(ap->a_vp, vap->va_vaflags,
477 VTOSMBFS(vp)->sm_args.uid, ap->a_cred));
478 if (error)
479 return (error);
480
481 #if 0
482 if (mtime == NULL)
483 mtime = &np->n_mtime;
484 if (atime == NULL)
485 atime = &np->n_atime;
486 #endif
487 /*
488 * If file is opened, then we can use handle based calls.
489 * If not, use path based ones.
490 */
491 if ((np->n_flag & NOPEN) == 0) {
492 if (vcp->vc_flags & SMBV_WIN95) {
493 error = VOP_OPEN(vp, FWRITE, ap->a_cred);
494 if (!error) {
495 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
496 VOP_GETATTR(vp, &vattr, ap->a_cred);*/
497 if (mtime)
498 np->n_mtime = *mtime;
499 VOP_CLOSE(vp, FWRITE, ap->a_cred);
500 }
501 } else if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) {
502 error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);
503 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
504 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
505 } else {
506 error = smbfs_smb_setpattr(np, 0, mtime, &scred);
507 }
508 } else {
509 if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) {
510 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
511 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
512 error = smbfs_smb_setftime(np, mtime, atime, &scred);
513 } else {
514 /*
515 * XXX I have no idea how to handle this for core
516 * level servers. The possible solution is to
517 * update mtime after file is closed.
518 */
519 }
520 }
521 }
522 /*
523 * Invalidate attribute cache in case if server doesn't set
524 * required attributes.
525 */
526 smbfs_attr_cacheremove(vp); /* invalidate cache */
527 VOP_GETATTR(vp, vap, ap->a_cred);
528 np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
529 VN_KNOTE(vp, NOTE_ATTRIB);
530 return error;
531 }
532 /*
533 * smbfs_read call.
534 */
535 int
smbfs_read(void * v)536 smbfs_read(void *v)
537 {
538 struct vop_read_args /* {
539 struct vnode *a_vp;
540 struct uio *a_uio;
541 int a_ioflag;
542 kauth_cred_t a_cred;
543 } */ *ap = v;
544 struct vnode *vp = ap->a_vp;
545
546 if (vp->v_type != VREG && vp->v_type != VDIR)
547 return EPERM;
548
549 return smbfs_readvnode(vp, ap->a_uio, ap->a_cred);
550 }
551
552 int
smbfs_write(void * v)553 smbfs_write(void *v)
554 {
555 struct vop_write_args /* {
556 struct vnode *a_vp;
557 struct uio *a_uio;
558 int a_ioflag;
559 kauth_cred_t a_cred;
560 } */ *ap = v;
561 struct vnode *vp = ap->a_vp;
562 struct uio *uio = ap->a_uio;
563
564 SMBVDEBUG("%d,ofs=%lld,sz=%zu\n",vp->v_type,
565 (long long int)uio->uio_offset, uio->uio_resid);
566 if (vp->v_type != VREG)
567 return (EPERM);
568 return smbfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag);
569 }
570 /*
571 * smbfs_create call
572 * Create a regular file. On entry the directory to contain the file being
573 * created is locked. We must release before we return.
574 */
575 int
smbfs_create(void * v)576 smbfs_create(void *v)
577 {
578 struct vop_create_v3_args /* {
579 struct vnode *a_dvp;
580 struct vnode **a_vpp;
581 struct componentname *a_cnp;
582 struct vattr *a_vap;
583 } */ *ap = v;
584 struct vnode *dvp = ap->a_dvp;
585 struct vattr *vap = ap->a_vap;
586 struct componentname *cnp = ap->a_cnp;
587 struct smbnode *dnp = VTOSMB(dvp);
588 struct smbfattr fattr;
589 struct smb_cred scred;
590 const char *name = cnp->cn_nameptr;
591 int nmlen = cnp->cn_namelen;
592 int error = EINVAL;
593
594
595 if (vap->va_type != VREG)
596 goto out;
597
598 smb_makescred(&scred, curlwp, cnp->cn_cred);
599 error = smbfs_smb_create(dnp, name, nmlen, &scred);
600 if (error)
601 goto out;
602
603 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred);
604 if (error)
605 goto out;
606 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, ap->a_vpp);
607 if (error)
608 goto out;
609
610 cache_enter(dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen,
611 cnp->cn_flags);
612
613 out:
614 VN_KNOTE(dvp, NOTE_WRITE);
615 return (error);
616 }
617
618 int
smbfs_remove(void * v)619 smbfs_remove(void *v)
620 {
621 struct vop_remove_args /* {
622 struct vnodeop_desc *a_desc;
623 struct vnode * a_dvp;
624 struct vnode * a_vp;
625 struct componentname * a_cnp;
626 } */ *ap = v;
627 struct vnode *vp = ap->a_vp;
628 struct vnode *dvp = ap->a_dvp;
629 struct componentname *cnp = ap->a_cnp;
630 struct smbnode *np = VTOSMB(vp);
631 struct smb_cred scred;
632 int error;
633
634 if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0
635 || vp->v_usecount != 1) {
636 /* XXX Eventually should do something along NFS sillyrename */
637 error = EPERM;
638 } else {
639 smb_makescred(&scred, curlwp, cnp->cn_cred);
640 error = smbfs_smb_delete(np, &scred);
641 }
642 if (error == 0)
643 np->n_flag |= NGONE;
644
645 VN_KNOTE(ap->a_vp, NOTE_DELETE);
646 VN_KNOTE(ap->a_dvp, NOTE_WRITE);
647 if (dvp == vp)
648 vrele(vp);
649 else
650 vput(vp);
651 vput(dvp);
652 return (error);
653 }
654
655 /*
656 * smbfs_file rename call
657 */
658 int
smbfs_rename(void * v)659 smbfs_rename(void *v)
660 {
661 struct vop_rename_args /* {
662 struct vnode *a_fdvp;
663 struct vnode *a_fvp;
664 struct componentname *a_fcnp;
665 struct vnode *a_tdvp;
666 struct vnode *a_tvp;
667 struct componentname *a_tcnp;
668 } */ *ap = v;
669 struct vnode *fvp = ap->a_fvp;
670 struct vnode *tvp = ap->a_tvp;
671 struct vnode *fdvp = ap->a_fdvp;
672 struct vnode *tdvp = ap->a_tdvp;
673 struct componentname *tcnp = ap->a_tcnp;
674 /* struct componentname *fcnp = ap->a_fcnp;*/
675 struct smb_cred scred;
676 #ifdef notyet
677 u_int16_t flags = 6;
678 #endif
679 int error=0;
680
681 /* Check for cross-device rename */
682 if ((fvp->v_mount != tdvp->v_mount) ||
683 (tvp && (fvp->v_mount != tvp->v_mount))) {
684 error = EXDEV;
685 goto out;
686 }
687
688 if (tvp && tvp->v_usecount > 1) {
689 error = EBUSY;
690 goto out;
691 }
692 #ifdef notnow
693 flags = 0x10; /* verify all writes */
694 if (fvp->v_type == VDIR) {
695 flags |= 2;
696 } else if (fvp->v_type == VREG) {
697 flags |= 1;
698 } else {
699 error = EINVAL;
700 goto out;
701 }
702 #endif
703 smb_makescred(&scred, curlwp, tcnp->cn_cred);
704 /*
705 * It seems that Samba doesn't implement SMB_COM_MOVE call...
706 */
707 #ifdef notnow
708 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
709 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
710 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred);
711 } else
712 #endif
713 {
714 /*
715 * We have to do the work atomicaly
716 */
717 if (tvp && tvp != fvp) {
718 error = smbfs_smb_delete(VTOSMB(tvp), &scred);
719 if (error)
720 goto out;
721 VTOSMB(tvp)->n_flag |= NGONE;
722 VN_KNOTE(tdvp, NOTE_WRITE);
723 VN_KNOTE(tvp, NOTE_DELETE);
724 cache_purge(tvp);
725 }
726 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
727 tcnp->cn_nameptr, tcnp->cn_namelen, &scred);
728 VTOSMB(fvp)->n_flag |= NGONE;
729 VN_KNOTE(fdvp, NOTE_WRITE);
730 VN_KNOTE(fvp, NOTE_RENAME);
731 }
732
733 if (fvp->v_type == VDIR) {
734 if (tvp != NULL && tvp->v_type == VDIR)
735 cache_purge(tdvp);
736 cache_purge(fdvp);
737 }
738
739 smbfs_attr_cacheremove(fdvp);
740 smbfs_attr_cacheremove(tdvp);
741
742 out:
743
744 if (tdvp == tvp)
745 vrele(tdvp);
746 else
747 vput(tdvp);
748 if (tvp)
749 vput(tvp);
750
751 vrele(fdvp);
752 vrele(fvp);
753
754 return (error);
755 }
756
757 /*
758 * somtime it will come true...
759 */
760 int
smbfs_link(void * v)761 smbfs_link(void *v)
762 {
763 return genfs_eopnotsupp(v);
764 }
765
766 /*
767 * smbfs_symlink link create call.
768 * Sometime it will be functional...
769 */
770 int
smbfs_symlink(void * v)771 smbfs_symlink(void *v)
772 {
773 return genfs_eopnotsupp(v);
774 }
775
776 int
smbfs_mkdir(void * v)777 smbfs_mkdir(void *v)
778 {
779 struct vop_mkdir_v3_args /* {
780 struct vnode *a_dvp;
781 struct vnode **a_vpp;
782 struct componentname *a_cnp;
783 struct vattr *a_vap;
784 } */ *ap = v;
785 struct vnode *dvp = ap->a_dvp;
786 /* struct vattr *vap = ap->a_vap;*/
787 struct vnode *vp;
788 struct componentname *cnp = ap->a_cnp;
789 struct smbnode *dnp = VTOSMB(dvp);
790 struct smb_cred scred;
791 struct smbfattr fattr;
792 const char *name = cnp->cn_nameptr;
793 int len = cnp->cn_namelen;
794 int error;
795
796 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))){
797 error = EEXIST;
798 goto out;
799 }
800
801 smb_makescred(&scred, curlwp, cnp->cn_cred);
802 error = smbfs_smb_mkdir(dnp, name, len, &scred);
803 if (error)
804 goto out;
805 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred);
806 if (error)
807 goto out;
808 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
809 if (error)
810 goto out;
811 *ap->a_vpp = vp;
812
813 out:
814 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
815
816 return (error);
817 }
818
819 /*
820 * smbfs_remove directory call
821 */
822 int
smbfs_rmdir(void * v)823 smbfs_rmdir(void *v)
824 {
825 struct vop_rmdir_args /* {
826 struct vnode *a_dvp;
827 struct vnode *a_vp;
828 struct componentname *a_cnp;
829 } */ *ap = v;
830 struct vnode *vp = ap->a_vp;
831 struct vnode *dvp = ap->a_dvp;
832 struct componentname *cnp = ap->a_cnp;
833 /* struct smbmount *smp = VTOSMBFS(vp);*/
834 struct smbnode *dnp = VTOSMB(dvp);
835 struct smbnode *np = VTOSMB(vp);
836 struct smb_cred scred;
837 int error;
838
839 if (dvp == vp) {
840 vrele(dvp);
841 vput(dvp);
842 return (EINVAL);
843 }
844
845 smb_makescred(&scred, curlwp, cnp->cn_cred);
846 error = smbfs_smb_rmdir(np, &scred);
847 if (error == 0)
848 np->n_flag |= NGONE;
849 dnp->n_flag |= NMODIFIED;
850 smbfs_attr_cacheremove(dvp);
851 VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
852 VN_KNOTE(vp, NOTE_DELETE);
853 cache_purge(dvp);
854 cache_purge(vp);
855 vput(vp);
856 vput(dvp);
857
858 return (error);
859 }
860
861 /*
862 * smbfs_readdir call
863 */
864 int
smbfs_readdir(void * v)865 smbfs_readdir(void *v)
866 {
867 struct vop_readdir_args /* {
868 struct vnode *a_vp;
869 struct uio *a_uio;
870 kauth_cred_t a_cred;
871 int *a_eofflag;
872 u_long *a_cookies;
873 int a_ncookies;
874 } */ *ap = v;
875 struct vnode *vp = ap->a_vp;
876
877 if (vp->v_type != VDIR)
878 return (EPERM);
879 #ifdef notnow
880 if (ap->a_ncookies) {
881 printf("smbfs_readdir: no support for cookies now...");
882 return (EOPNOTSUPP);
883 }
884 #endif
885 return (smbfs_readvnode(vp, ap->a_uio, ap->a_cred));
886 }
887
888 /* ARGSUSED */
889 int
smbfs_fsync(void * v)890 smbfs_fsync(void *v)
891 {
892 /*return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_l, 1));*/
893 return (0);
894 }
895
896 int
smbfs_print(void * v)897 smbfs_print(void *v)
898 {
899 struct vop_print_args /* {
900 struct vnode *a_vp;
901 } */ *ap = v;
902 struct vnode *vp = ap->a_vp;
903 struct smbnode *np = VTOSMB(vp);
904
905 printf("tag VT_SMBFS, name = %.*s, parent = %p, open = %d\n",
906 (int)np->n_nmlen, np->n_name,
907 np->n_parent ? np->n_parent : NULL,
908 (np->n_flag & NOPEN) != 0);
909 return (0);
910 }
911
912 int
smbfs_pathconf(void * v)913 smbfs_pathconf(void *v)
914 {
915 struct vop_pathconf_args /* {
916 struct vnode *vp;
917 int a_name;
918 register_t *a_retval;
919 } */ *ap = v;
920 register_t *retval = ap->a_retval;
921 int error = 0;
922
923 switch (ap->a_name) {
924 case _PC_PIPE_BUF:
925 *retval = PIPE_BUF;
926 break;
927 case _PC_SYNC_IO:
928 *retval = 1;
929 break;
930 case _PC_LINK_MAX:
931 *retval = 0;
932 break;
933 case _PC_NAME_MAX:
934 *retval = ap->a_vp->v_mount->mnt_stat.f_namemax;
935 break;
936 case _PC_PATH_MAX:
937 *retval = 800; /* XXX: a correct one ? */
938 break;
939 default:
940 error = EINVAL;
941 break;
942 }
943
944 return (error);
945 }
946
947 int
smbfs_strategy(void * v)948 smbfs_strategy(void *v)
949 {
950 struct vop_strategy_args /* {
951 struct vnode *a_vp;
952 struct buf *a_bp;
953 } */ *ap = v;
954 struct buf *bp = ap->a_bp;
955 kauth_cred_t cr;
956 struct lwp *l;
957 int error = 0;
958
959 SMBVDEBUG0("\n");
960 if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC))
961 panic("smbfs physio/async");
962 if (bp->b_flags & B_ASYNC) {
963 l = NULL;
964 cr = NULL;
965 } else {
966 l = curlwp; /* XXX */
967 cr = l->l_cred;
968 }
969
970 if ((bp->b_flags & B_ASYNC) == 0)
971 error = smbfs_doio(bp, cr, l);
972
973 return (error);
974 }
975
976 #ifndef __NetBSD__
977 static char smbfs_atl[] = "rhsvda";
978 static int
smbfs_getextattr(struct vop_getextattr_args * ap)979 smbfs_getextattr(struct vop_getextattr_args *ap)
980 /* {
981 IN struct vnode *a_vp;
982 IN char *a_name;
983 INOUT struct uio *a_uio;
984 IN kauth_cred_t a_cred;
985 };
986 */
987 {
988 struct vnode *vp = ap->a_vp;
989 struct lwp *l = ap->a_l;
990 kauth_cred_t cred = ap->a_cred;
991 struct uio *uio = ap->a_uio;
992 const char *name = ap->a_name;
993 struct smbnode *np = VTOSMB(vp);
994 struct vattr vattr;
995 char buf[10];
996 int i, attr, error;
997
998 error = VOP_ACCESS(vp, VREAD, cred, td);
999 if (error)
1000 return error;
1001 error = VOP_GETATTR(vp, &vattr, cred, td);
1002 if (error)
1003 return error;
1004 if (strcmp(name, "dosattr") == 0) {
1005 attr = np->n_dosattr;
1006 for (i = 0; i < 6; i++, attr >>= 1)
1007 buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
1008 buf[i] = 0;
1009 error = uiomove(buf, i, uio);
1010
1011 } else
1012 error = EINVAL;
1013 return error;
1014 }
1015 #endif /* !__NetBSD__ */
1016
1017 /*
1018 * Since we expected to support F_GETLK (and SMB protocol has no such function),
1019 * it is necessary to use lf_advlock(). It would be nice if this function had
1020 * a callback mechanism because it will help to improve a level of consistency.
1021 */
1022 int
smbfs_advlock(void * v)1023 smbfs_advlock(void *v)
1024 {
1025 struct vop_advlock_args /* {
1026 struct vnode *a_vp;
1027 void *a_id;
1028 int a_op;
1029 struct flock *a_fl;
1030 int a_flags;
1031 } */ *ap = v;
1032 struct vnode *vp = ap->a_vp;
1033 struct smbnode *np = VTOSMB(vp);
1034 struct flock *fl = ap->a_fl;
1035 struct lwp *l = curlwp;
1036 struct smb_cred scred;
1037 u_quad_t size;
1038 off_t start, end, oadd;
1039 int error, lkop;
1040
1041 if (vp->v_type == VDIR) {
1042 /*
1043 * SMB protocol have no support for directory locking.
1044 * Although locks can be processed on local machine, I don't
1045 * think that this is a good idea, because some programs
1046 * can work wrong assuming directory is locked. So, we just
1047 * return 'operation not supported'.
1048 */
1049 return EOPNOTSUPP;
1050 }
1051 size = np->n_size;
1052 switch (fl->l_whence) {
1053
1054 case SEEK_SET:
1055 case SEEK_CUR:
1056 start = fl->l_start;
1057 break;
1058
1059 case SEEK_END:
1060 #ifndef __NetBSD__
1061 if (size > OFF_MAX ||
1062 (fl->l_start > 0 && size > OFF_MAX - fl->l_start))
1063 return EOVERFLOW;
1064 #endif
1065 start = size + fl->l_start;
1066 break;
1067
1068 default:
1069 return EINVAL;
1070 }
1071 if (start < 0)
1072 return EINVAL;
1073 if (fl->l_len < 0) {
1074 if (start == 0)
1075 return EINVAL;
1076 end = start - 1;
1077 start += fl->l_len;
1078 if (start < 0)
1079 return EINVAL;
1080 } else if (fl->l_len == 0)
1081 end = -1;
1082 else {
1083 oadd = fl->l_len - 1;
1084 #ifndef __NetBSD__
1085 if (oadd > OFF_MAX - start)
1086 return EOVERFLOW;
1087 #endif
1088 end = start + oadd;
1089 }
1090 smb_makescred(&scred, l, l ? l->l_cred : NULL);
1091 switch (ap->a_op) {
1092 case F_SETLK:
1093 switch (fl->l_type) {
1094 case F_WRLCK:
1095 lkop = SMB_LOCK_EXCL;
1096 break;
1097 case F_RDLCK:
1098 lkop = SMB_LOCK_SHARED;
1099 break;
1100 case F_UNLCK:
1101 lkop = SMB_LOCK_RELEASE;
1102 break;
1103 default:
1104 return EINVAL;
1105 }
1106 error = lf_advlock(ap, &np->n_lockf, size);
1107 if (error)
1108 break;
1109 /*
1110 * The ID we use for smb_lock is passed as PID to SMB
1111 * server. It MUST agree with PID as setup in basic
1112 * SMB header in later write requests, otherwise SMB server
1113 * returns EDEADLK. See also smb_rq_new() on SMB header setup.
1114 */
1115 error = smbfs_smb_lock(np, lkop,(void *)1, start, end, &scred);
1116 if (error) {
1117 ap->a_op = F_UNLCK;
1118 lf_advlock(ap, &np->n_lockf, size);
1119 }
1120 break;
1121 case F_UNLCK:
1122 lf_advlock(ap, &np->n_lockf, size);
1123 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, ap->a_id, start, end, &scred);
1124 break;
1125 case F_GETLK:
1126 error = lf_advlock(ap, &np->n_lockf, size);
1127 break;
1128 default:
1129 return EINVAL;
1130 }
1131
1132 return error;
1133 }
1134
1135 static int
smbfs_pathcheck(struct smbmount * smp,const char * name,int nmlen)1136 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen)
1137 {
1138 static const char * const badchars = "*/\\:<>;?";
1139 static const char * const badchars83 = " +|,[]=";
1140 const char *cp;
1141 int i;
1142
1143 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
1144 /*
1145 * Name should conform 8.3 format
1146 */
1147 if (nmlen > 12)
1148 return (ENAMETOOLONG);
1149
1150 if ((cp = memchr(name, '.', nmlen)) == NULL
1151 || cp == name || (cp - name) > 8
1152 || (cp = memchr(cp + 1, '.', nmlen - (cp - name))) != NULL)
1153 goto bad;
1154
1155 for (cp = name, i = 0; i < nmlen; i++, cp++)
1156 if (strchr(badchars83, *cp) != NULL)
1157 goto bad;
1158 }
1159
1160 for (cp = name, i = 0; i < nmlen; i++, cp++)
1161 if (strchr(badchars, *cp) != NULL)
1162 goto bad;
1163
1164 /* name is fine */
1165 return (0);
1166
1167 bad:
1168 return (ENOENT);
1169 }
1170
1171 /*
1172 * Things go even weird without fixed inode numbers...
1173 */
1174 int
smbfs_lookup(void * v)1175 smbfs_lookup(void *v)
1176 {
1177 struct vop_lookup_v2_args /* {
1178 struct vnode *a_dvp;
1179 struct vnode **a_vpp;
1180 struct componentname *a_cnp;
1181 } */ *ap = v;
1182 struct componentname *cnp = ap->a_cnp;
1183 struct vnode *dvp = ap->a_dvp;
1184 struct vnode **vpp = ap->a_vpp;
1185 struct mount *mp = dvp->v_mount;
1186 struct smbnode *dnp;
1187 struct smbfattr fattr;
1188 struct smb_cred scred;
1189 const char *name = cnp->cn_nameptr;
1190 int flags = cnp->cn_flags;
1191 int nameiop = cnp->cn_nameiop;
1192 int nmlen = cnp->cn_namelen;
1193 int error, islastcn, isdot;
1194
1195 /*
1196 * Check accessiblity of directory.
1197 */
1198 error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred);
1199 if (error)
1200 return (error);
1201
1202 if ((cnp->cn_flags & ISLASTCN) &&
1203 (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
1204 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
1205 return (EROFS);
1206
1207 SMBVDEBUG("%d '%.*s' in '%.*s'\n", nameiop, nmlen, name,
1208 (int) VTOSMB(dvp)->n_nmlen, VTOSMB(dvp)->n_name);
1209
1210 islastcn = flags & ISLASTCN;
1211
1212 /*
1213 * Before tediously performing a linear scan of the directory,
1214 * check the name cache to see if the directory/name pair
1215 * we are looking for is known already.
1216 * If the directory/name pair is found in the name cache,
1217 * we have to ensure the directory has not changed from
1218 * the time the cache entry has been created. If it has,
1219 * the cache entry has to be ignored.
1220 */
1221 if (cache_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
1222 cnp->cn_nameiop, cnp->cn_flags,
1223 NULL, vpp)) {
1224 struct vattr vattr;
1225 struct vnode *newvp;
1226 bool killit = false;
1227
1228 error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred);
1229 if (error != 0) {
1230 if (*vpp != NULLVP) {
1231 vrele(*vpp);
1232 }
1233 *vpp = NULLVP;
1234 return error;
1235 }
1236
1237 if (*vpp == NULLVP) {
1238 if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred)
1239 && vattr.va_mtime.tv_sec == VTOSMB(dvp)->n_nctime)
1240 return ENOENT;
1241 cache_purge(dvp);
1242 VTOSMB(dvp)->n_nctime = 0;
1243 goto dolookup;
1244 }
1245
1246 newvp = *vpp;
1247 if (newvp != dvp)
1248 vn_lock(newvp, LK_SHARED | LK_RETRY);
1249 error = VOP_GETATTR(newvp, &vattr, cnp->cn_cred);
1250 /*
1251 * If the file type on the server is inconsistent
1252 * with what it was when we created the vnode,
1253 * kill the bogus vnode now and fall through to
1254 * the code below to create a new one with the
1255 * right type.
1256 */
1257 if (error == 0 &&
1258 ((newvp->v_type == VDIR &&
1259 (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) == 0) ||
1260 (newvp->v_type == VREG &&
1261 (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) != 0)))
1262 killit = true;
1263 else if (error == 0
1264 && vattr.va_ctime.tv_sec == VTOSMB(newvp)->n_ctime)
1265 {
1266 if (newvp != dvp)
1267 VOP_UNLOCK(newvp);
1268 /* nfsstats.lookupcache_hits++; */
1269 return (0);
1270 }
1271
1272 cache_purge(newvp);
1273 if (newvp != dvp) {
1274 if (killit) {
1275 VOP_UNLOCK(newvp);
1276 vgone(newvp);
1277 } else
1278 vput(newvp);
1279 } else
1280 vrele(newvp);
1281 *vpp = NULLVP;
1282 }
1283
1284 dolookup:
1285
1286 /* ensure the name is sane */
1287 if (nameiop != LOOKUP) {
1288 error = smbfs_pathcheck(VFSTOSMBFS(mp), cnp->cn_nameptr,
1289 cnp->cn_namelen);
1290 if (error)
1291 return (error);
1292 }
1293
1294 dnp = VTOSMB(dvp);
1295 isdot = (nmlen == 1 && name[0] == '.');
1296
1297 /*
1298 * entry is not in the cache or has been expired
1299 */
1300 smb_makescred(&scred, curlwp, cnp->cn_cred);
1301 if (flags & ISDOTDOT)
1302 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0,
1303 &fattr, &scred);
1304 else
1305 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred);
1306
1307 if (error) {
1308 /* Not found */
1309
1310 if (error != ENOENT)
1311 return (error);
1312
1313 /*
1314 * Handle RENAME or CREATE case...
1315 */
1316 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
1317 /*
1318 * Access for write is interpreted as allowing
1319 * creation of files in the directory.
1320 */
1321 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
1322 if (error)
1323 return (error);
1324
1325 return (EJUSTRETURN);
1326 }
1327
1328 /*
1329 * Insert name into cache (as non-existent) if appropriate.
1330 */
1331 if (nameiop != CREATE)
1332 cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen,
1333 cnp->cn_flags);
1334
1335 return (ENOENT);
1336 }
1337
1338 /* Found */
1339
1340 /* Handle RENAME case... */
1341 if (nameiop == RENAME && islastcn) {
1342 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
1343 if (error)
1344 return (error);
1345
1346 if (isdot)
1347 return (EISDIR);
1348 error = smbfs_nget(mp, dvp, name, nmlen, &fattr, vpp);
1349 if (error)
1350 return (error);
1351 return (0);
1352 }
1353
1354 if (isdot) {
1355 vref(dvp);
1356 *vpp = dvp;
1357 error = 0;
1358 } else {
1359 error = smbfs_nget(mp, dvp, name, nmlen,
1360 ((flags & ISDOTDOT) ? NULL : &fattr), vpp);
1361 }
1362 if (error)
1363 return error;
1364
1365 if (cnp->cn_nameiop != DELETE || !islastcn) {
1366 VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_mtime.tv_sec;
1367 cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen,
1368 cnp->cn_flags);
1369 #ifdef notdef
1370 } else if (error == ENOENT && cnp->cn_nameiop != CREATE) {
1371 VTOSMB(*vpp)->n_nctime = VTOSMB(*vpp)->n_mtime.tv_sec;
1372 cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen,
1373 cnp->cn_flags);
1374 #endif
1375 }
1376
1377 return (0);
1378 }
1379