xref: /freebsd/sys/fs/smbfs/smbfs_vnops.c (revision ddd5b8e9b4d8957fce018c520657cdfa4ecffad3)
1 /*-
2  * Copyright (c) 2000-2001 Boris Popov
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/namei.h>
31 #include <sys/kernel.h>
32 #include <sys/proc.h>
33 #include <sys/bio.h>
34 #include <sys/buf.h>
35 #include <sys/fcntl.h>
36 #include <sys/mount.h>
37 #include <sys/unistd.h>
38 #include <sys/vnode.h>
39 #include <sys/limits.h>
40 #include <sys/lockf.h>
41 #include <sys/stat.h>
42 
43 #include <vm/vm.h>
44 #include <vm/vm_extern.h>
45 
46 
47 #include <netsmb/smb.h>
48 #include <netsmb/smb_conn.h>
49 #include <netsmb/smb_subr.h>
50 
51 #include <fs/smbfs/smbfs.h>
52 #include <fs/smbfs/smbfs_node.h>
53 #include <fs/smbfs/smbfs_subr.h>
54 
55 /*
56  * Prototypes for SMBFS vnode operations
57  */
58 static vop_create_t	smbfs_create;
59 static vop_mknod_t	smbfs_mknod;
60 static vop_open_t	smbfs_open;
61 static vop_close_t	smbfs_close;
62 static vop_access_t	smbfs_access;
63 static vop_getattr_t	smbfs_getattr;
64 static vop_setattr_t	smbfs_setattr;
65 static vop_read_t	smbfs_read;
66 static vop_write_t	smbfs_write;
67 static vop_fsync_t	smbfs_fsync;
68 static vop_remove_t	smbfs_remove;
69 static vop_link_t	smbfs_link;
70 static vop_lookup_t	smbfs_lookup;
71 static vop_rename_t	smbfs_rename;
72 static vop_mkdir_t	smbfs_mkdir;
73 static vop_rmdir_t	smbfs_rmdir;
74 static vop_symlink_t	smbfs_symlink;
75 static vop_readdir_t	smbfs_readdir;
76 static vop_strategy_t	smbfs_strategy;
77 static vop_print_t	smbfs_print;
78 static vop_pathconf_t	smbfs_pathconf;
79 static vop_advlock_t	smbfs_advlock;
80 static vop_getextattr_t	smbfs_getextattr;
81 
82 struct vop_vector smbfs_vnodeops = {
83 	.vop_default =		&default_vnodeops,
84 
85 	.vop_access =		smbfs_access,
86 	.vop_advlock =		smbfs_advlock,
87 	.vop_close =		smbfs_close,
88 	.vop_create =		smbfs_create,
89 	.vop_fsync =		smbfs_fsync,
90 	.vop_getattr =		smbfs_getattr,
91 	.vop_getextattr = 	smbfs_getextattr,
92 	.vop_getpages =		smbfs_getpages,
93 	.vop_inactive =		smbfs_inactive,
94 	.vop_ioctl =		smbfs_ioctl,
95 	.vop_link =		smbfs_link,
96 	.vop_lookup =		smbfs_lookup,
97 	.vop_mkdir =		smbfs_mkdir,
98 	.vop_mknod =		smbfs_mknod,
99 	.vop_open =		smbfs_open,
100 	.vop_pathconf =		smbfs_pathconf,
101 	.vop_print =		smbfs_print,
102 	.vop_putpages =		smbfs_putpages,
103 	.vop_read =		smbfs_read,
104 	.vop_readdir =		smbfs_readdir,
105 	.vop_reclaim =		smbfs_reclaim,
106 	.vop_remove =		smbfs_remove,
107 	.vop_rename =		smbfs_rename,
108 	.vop_rmdir =		smbfs_rmdir,
109 	.vop_setattr =		smbfs_setattr,
110 /*	.vop_setextattr =	smbfs_setextattr,*/
111 	.vop_strategy =		smbfs_strategy,
112 	.vop_symlink =		smbfs_symlink,
113 	.vop_write =		smbfs_write,
114 };
115 
116 static int
117 smbfs_access(ap)
118 	struct vop_access_args /* {
119 		struct vnode *a_vp;
120 		accmode_t a_accmode;
121 		struct ucred *a_cred;
122 		struct thread *a_td;
123 	} */ *ap;
124 {
125 	struct vnode *vp = ap->a_vp;
126 	accmode_t accmode = ap->a_accmode;
127 	mode_t mpmode;
128 	struct smbmount *smp = VTOSMBFS(vp);
129 
130 	SMBVDEBUG("\n");
131 	if ((accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
132 		switch (vp->v_type) {
133 		    case VREG: case VDIR: case VLNK:
134 			return EROFS;
135 		    default:
136 			break;
137 		}
138 	}
139 	mpmode = vp->v_type == VREG ? smp->sm_file_mode : smp->sm_dir_mode;
140 	return (vaccess(vp->v_type, mpmode, smp->sm_uid,
141 	    smp->sm_gid, ap->a_accmode, ap->a_cred, NULL));
142 }
143 
144 /* ARGSUSED */
145 static int
146 smbfs_open(ap)
147 	struct vop_open_args /* {
148 		struct vnode *a_vp;
149 		int  a_mode;
150 		struct ucred *a_cred;
151 		struct thread *a_td;
152 	} */ *ap;
153 {
154 	struct vnode *vp = ap->a_vp;
155 	struct smbnode *np = VTOSMB(vp);
156 	struct smb_cred *scred;
157 	struct vattr vattr;
158 	int mode = ap->a_mode;
159 	int error, accmode;
160 
161 	SMBVDEBUG("%s,%d\n", np->n_name, (np->n_flag & NOPEN) != 0);
162 	if (vp->v_type != VREG && vp->v_type != VDIR) {
163 		SMBFSERR("open eacces vtype=%d\n", vp->v_type);
164 		return EACCES;
165 	}
166 	if (vp->v_type == VDIR) {
167 		np->n_flag |= NOPEN;
168 		return 0;
169 	}
170 	if (np->n_flag & NMODIFIED) {
171 		if ((error = smbfs_vinvalbuf(vp, ap->a_td)) == EINTR)
172 			return error;
173 		smbfs_attr_cacheremove(vp);
174 		error = VOP_GETATTR(vp, &vattr, ap->a_cred);
175 		if (error)
176 			return error;
177 		np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
178 	} else {
179 		error = VOP_GETATTR(vp, &vattr, ap->a_cred);
180 		if (error)
181 			return error;
182 		if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
183 			error = smbfs_vinvalbuf(vp, ap->a_td);
184 			if (error == EINTR)
185 				return error;
186 			np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
187 		}
188 	}
189 	if ((np->n_flag & NOPEN) != 0)
190 		return 0;
191 	/*
192 	 * Use DENYNONE to give unixy semantics of permitting
193 	 * everything not forbidden by permissions.  Ie denial
194 	 * is up to server with clients/openers needing to use
195 	 * advisory locks for further control.
196 	 */
197 	accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
198 	if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
199 		accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
200 	scred = smbfs_malloc_scred();
201 	smb_makescred(scred, ap->a_td, ap->a_cred);
202 	error = smbfs_smb_open(np, accmode, scred);
203 	if (error) {
204 		if (mode & FWRITE)
205 			return EACCES;
206 		else if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
207 			accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
208 			error = smbfs_smb_open(np, accmode, scred);
209 		}
210 	}
211 	if (error == 0) {
212 		np->n_flag |= NOPEN;
213 		vnode_create_vobject(ap->a_vp, vattr.va_size, ap->a_td);
214 	}
215 	smbfs_attr_cacheremove(vp);
216 	smbfs_free_scred(scred);
217 	return error;
218 }
219 
220 static int
221 smbfs_close(ap)
222 	struct vop_close_args /* {
223 		struct vnodeop_desc *a_desc;
224 		struct vnode *a_vp;
225 		int  a_fflag;
226 		struct ucred *a_cred;
227 		struct thread *a_td;
228 	} */ *ap;
229 {
230 	struct vnode *vp = ap->a_vp;
231 	struct thread *td = ap->a_td;
232 	struct smbnode *np = VTOSMB(vp);
233 	struct smb_cred *scred;
234 
235 	if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0 &&
236 	    np->n_dirseq != NULL) {
237 		scred = smbfs_malloc_scred();
238 		smb_makescred(scred, td, ap->a_cred);
239 		smbfs_findclose(np->n_dirseq, scred);
240 		smbfs_free_scred(scred);
241 		np->n_dirseq = NULL;
242 	}
243 	return 0;
244 }
245 
246 /*
247  * smbfs_getattr call from vfs.
248  */
249 static int
250 smbfs_getattr(ap)
251 	struct vop_getattr_args /* {
252 		struct vnode *a_vp;
253 		struct vattr *a_vap;
254 		struct ucred *a_cred;
255 	} */ *ap;
256 {
257 	struct vnode *vp = ap->a_vp;
258 	struct smbnode *np = VTOSMB(vp);
259 	struct vattr *va=ap->a_vap;
260 	struct smbfattr fattr;
261 	struct smb_cred *scred;
262 	u_quad_t oldsize;
263 	int error;
264 
265 	SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_vflag & VV_ROOT) != 0);
266 	error = smbfs_attr_cachelookup(vp, va);
267 	if (!error)
268 		return 0;
269 	SMBVDEBUG("not in the cache\n");
270 	scred = smbfs_malloc_scred();
271 	smb_makescred(scred, curthread, ap->a_cred);
272 	oldsize = np->n_size;
273 	error = smbfs_smb_lookup(np, NULL, 0, &fattr, scred);
274 	if (error) {
275 		SMBVDEBUG("error %d\n", error);
276 		smbfs_free_scred(scred);
277 		return error;
278 	}
279 	smbfs_attr_cacheenter(vp, &fattr);
280 	smbfs_attr_cachelookup(vp, va);
281 	if (np->n_flag & NOPEN)
282 		np->n_size = oldsize;
283 		smbfs_free_scred(scred);
284 	return 0;
285 }
286 
287 static int
288 smbfs_setattr(ap)
289 	struct vop_setattr_args /* {
290 		struct vnode *a_vp;
291 		struct vattr *a_vap;
292 		struct ucred *a_cred;
293 	} */ *ap;
294 {
295 	struct vnode *vp = ap->a_vp;
296 	struct smbnode *np = VTOSMB(vp);
297 	struct vattr *vap = ap->a_vap;
298 	struct timespec *mtime, *atime;
299 	struct smb_cred *scred;
300 	struct smb_share *ssp = np->n_mount->sm_share;
301 	struct smb_vc *vcp = SSTOVC(ssp);
302 	struct thread *td = curthread;
303 	u_quad_t tsize = 0;
304 	int isreadonly, doclose, error = 0;
305 	int old_n_dosattr;
306 
307 	SMBVDEBUG("\n");
308 	if (vap->va_flags != VNOVAL)
309 		return EOPNOTSUPP;
310 	isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
311 	/*
312 	 * Disallow write attempts if the filesystem is mounted read-only.
313 	 */
314   	if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
315 	     vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
316 	     vap->va_mode != (mode_t)VNOVAL) && isreadonly)
317 		return EROFS;
318 	scred = smbfs_malloc_scred();
319 	smb_makescred(scred, td, ap->a_cred);
320 	if (vap->va_size != VNOVAL) {
321  		switch (vp->v_type) {
322  		    case VDIR:
323  			error = EISDIR;
324 			goto out;
325  		    case VREG:
326 			break;
327  		    default:
328 			error = EINVAL;
329 			goto out;
330   		};
331 		if (isreadonly) {
332 			error = EROFS;
333 			goto out;
334 		}
335 		doclose = 0;
336 		vnode_pager_setsize(vp, (u_long)vap->va_size);
337  		tsize = np->n_size;
338  		np->n_size = vap->va_size;
339 		if ((np->n_flag & NOPEN) == 0) {
340 			error = smbfs_smb_open(np,
341 					       SMB_SM_DENYNONE|SMB_AM_OPENRW,
342 					       scred);
343 			if (error == 0)
344 				doclose = 1;
345 		}
346 		if (error == 0)
347 			error = smbfs_smb_setfsize(np, vap->va_size, scred);
348 		if (doclose)
349 			smbfs_smb_close(ssp, np->n_fid, NULL, scred);
350 		if (error) {
351 			np->n_size = tsize;
352 			vnode_pager_setsize(vp, (u_long)tsize);
353 			goto out;
354 		}
355   	}
356 	if (vap->va_mode != (mode_t)VNOVAL) {
357 		old_n_dosattr = np->n_dosattr;
358 		if (vap->va_mode & S_IWUSR)
359 			np->n_dosattr &= ~SMB_FA_RDONLY;
360 		else
361 			np->n_dosattr |= SMB_FA_RDONLY;
362 		if (np->n_dosattr != old_n_dosattr) {
363 			error = smbfs_smb_setpattr(np, np->n_dosattr, NULL, scred);
364 			if (error)
365 				goto out;
366 		}
367 	}
368 	mtime = atime = NULL;
369 	if (vap->va_mtime.tv_sec != VNOVAL)
370 		mtime = &vap->va_mtime;
371 	if (vap->va_atime.tv_sec != VNOVAL)
372 		atime = &vap->va_atime;
373 	if (mtime != atime) {
374 		if (vap->va_vaflags & VA_UTIMES_NULL) {
375 			error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
376 			if (error)
377 				error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td);
378 		} else
379 			error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
380 #if 0
381 		if (mtime == NULL)
382 			mtime = &np->n_mtime;
383 		if (atime == NULL)
384 			atime = &np->n_atime;
385 #endif
386 		/*
387 		 * If file is opened, then we can use handle based calls.
388 		 * If not, use path based ones.
389 		 */
390 		if ((np->n_flag & NOPEN) == 0) {
391 			if (vcp->vc_flags & SMBV_WIN95) {
392 				error = VOP_OPEN(vp, FWRITE, ap->a_cred, td,
393 				    NULL);
394 				if (!error) {
395 /*					error = smbfs_smb_setfattrNT(np, 0,
396 					    mtime, atime, scred);
397 					VOP_GETATTR(vp, &vattr, ap->a_cred); */
398 					if (mtime)
399 						np->n_mtime = *mtime;
400 					VOP_CLOSE(vp, FWRITE, ap->a_cred, td);
401 				}
402 			} else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) {
403 				error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
404 /*				error = smbfs_smb_setpattrNT(np, 0, mtime, atime, scred);*/
405 			} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
406 				error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
407 			} else {
408 				error = smbfs_smb_setpattr(np, 0, mtime, scred);
409 			}
410 		} else {
411 			if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) {
412 				error = smbfs_smb_setfattrNT(np, 0, mtime, atime, scred);
413 			} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
414 				error = smbfs_smb_setftime(np, mtime, atime, scred);
415 			} else {
416 				/*
417 				 * I have no idea how to handle this for core
418 				 * level servers. The possible solution is to
419 				 * update mtime after file is closed.
420 				 */
421 				 SMBERROR("can't update times on an opened file\n");
422 			}
423 		}
424 	}
425 	/*
426 	 * Invalidate attribute cache in case if server doesn't set
427 	 * required attributes.
428 	 */
429 	smbfs_attr_cacheremove(vp);	/* invalidate cache */
430 	VOP_GETATTR(vp, vap, ap->a_cred);
431 	np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
432 out:
433 	smbfs_free_scred(scred);
434 	return error;
435 }
436 /*
437  * smbfs_read call.
438  */
439 static int
440 smbfs_read(ap)
441 	struct vop_read_args /* {
442 		struct vnode *a_vp;
443 		struct uio *a_uio;
444 		int  a_ioflag;
445 		struct ucred *a_cred;
446 	} */ *ap;
447 {
448 	struct vnode *vp = ap->a_vp;
449 	struct uio *uio = ap->a_uio;
450 
451 	SMBVDEBUG("\n");
452 	if (vp->v_type != VREG && vp->v_type != VDIR)
453 		return EPERM;
454 	return smbfs_readvnode(vp, uio, ap->a_cred);
455 }
456 
457 static int
458 smbfs_write(ap)
459 	struct vop_write_args /* {
460 		struct vnode *a_vp;
461 		struct uio *a_uio;
462 		int  a_ioflag;
463 		struct ucred *a_cred;
464 	} */ *ap;
465 {
466 	struct vnode *vp = ap->a_vp;
467 	struct uio *uio = ap->a_uio;
468 
469 	SMBVDEBUG("%d,ofs=%jd,sz=%zd\n",vp->v_type, (intmax_t)uio->uio_offset,
470 	    uio->uio_resid);
471 	if (vp->v_type != VREG)
472 		return (EPERM);
473 	return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
474 }
475 /*
476  * smbfs_create call
477  * Create a regular file. On entry the directory to contain the file being
478  * created is locked.  We must release before we return. We must also free
479  * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or
480  * only if the SAVESTART bit in cn_flags is clear on success.
481  */
482 static int
483 smbfs_create(ap)
484 	struct vop_create_args /* {
485 		struct vnode *a_dvp;
486 		struct vnode **a_vpp;
487 		struct componentname *a_cnp;
488 		struct vattr *a_vap;
489 	} */ *ap;
490 {
491 	struct vnode *dvp = ap->a_dvp;
492 	struct vattr *vap = ap->a_vap;
493 	struct vnode **vpp=ap->a_vpp;
494 	struct componentname *cnp = ap->a_cnp;
495 	struct smbnode *dnp = VTOSMB(dvp);
496 	struct vnode *vp;
497 	struct vattr vattr;
498 	struct smbfattr fattr;
499 	struct smb_cred *scred;
500 	char *name = cnp->cn_nameptr;
501 	int nmlen = cnp->cn_namelen;
502 	int error;
503 
504 
505 	SMBVDEBUG("\n");
506 	*vpp = NULL;
507 	if (vap->va_type != VREG)
508 		return EOPNOTSUPP;
509 	if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
510 		return error;
511 	scred = smbfs_malloc_scred();
512 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
513 
514 	error = smbfs_smb_create(dnp, name, nmlen, scred);
515 	if (error)
516 		goto out;
517 	error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, scred);
518 	if (error)
519 		goto out;
520 	error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp);
521 	if (error)
522 		goto out;
523 	*vpp = vp;
524 	if (cnp->cn_flags & MAKEENTRY)
525 		cache_enter(dvp, vp, cnp);
526 out:
527 	smbfs_free_scred(scred);
528 	return error;
529 }
530 
531 static int
532 smbfs_remove(ap)
533 	struct vop_remove_args /* {
534 		struct vnodeop_desc *a_desc;
535 		struct vnode * a_dvp;
536 		struct vnode * a_vp;
537 		struct componentname * a_cnp;
538 	} */ *ap;
539 {
540 	struct vnode *vp = ap->a_vp;
541 /*	struct vnode *dvp = ap->a_dvp;*/
542 	struct componentname *cnp = ap->a_cnp;
543 	struct smbnode *np = VTOSMB(vp);
544 	struct smb_cred *scred;
545 	int error;
546 
547 	if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vrefcnt(vp) != 1)
548 		return EPERM;
549 	scred = smbfs_malloc_scred();
550 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
551 	error = smbfs_smb_delete(np, scred);
552 	if (error == 0)
553 		np->n_flag |= NGONE;
554 	cache_purge(vp);
555 	smbfs_free_scred(scred);
556 	return error;
557 }
558 
559 /*
560  * smbfs_file rename call
561  */
562 static int
563 smbfs_rename(ap)
564 	struct vop_rename_args  /* {
565 		struct vnode *a_fdvp;
566 		struct vnode *a_fvp;
567 		struct componentname *a_fcnp;
568 		struct vnode *a_tdvp;
569 		struct vnode *a_tvp;
570 		struct componentname *a_tcnp;
571 	} */ *ap;
572 {
573 	struct vnode *fvp = ap->a_fvp;
574 	struct vnode *tvp = ap->a_tvp;
575 	struct vnode *fdvp = ap->a_fdvp;
576 	struct vnode *tdvp = ap->a_tdvp;
577 	struct componentname *tcnp = ap->a_tcnp;
578 /*	struct componentname *fcnp = ap->a_fcnp;*/
579 	struct smb_cred *scred;
580 	u_int16_t flags = 6;
581 	int error=0;
582 
583 	scred = NULL;
584 	/* Check for cross-device rename */
585 	if ((fvp->v_mount != tdvp->v_mount) ||
586 	    (tvp && (fvp->v_mount != tvp->v_mount))) {
587 		error = EXDEV;
588 		goto out;
589 	}
590 
591 	if (tvp && vrefcnt(tvp) > 1) {
592 		error = EBUSY;
593 		goto out;
594 	}
595 	flags = 0x10;			/* verify all writes */
596 	if (fvp->v_type == VDIR) {
597 		flags |= 2;
598 	} else if (fvp->v_type == VREG) {
599 		flags |= 1;
600 	} else {
601 		return EINVAL;
602 	}
603 	scred = smbfs_malloc_scred();
604 	smb_makescred(scred, tcnp->cn_thread, tcnp->cn_cred);
605 	/*
606 	 * It seems that Samba doesn't implement SMB_COM_MOVE call...
607 	 */
608 #ifdef notnow
609 	if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
610 		error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
611 		    tcnp->cn_nameptr, tcnp->cn_namelen, flags, scred);
612 	} else
613 #endif
614 	{
615 		/*
616 		 * We have to do the work atomicaly
617 		 */
618 		if (tvp && tvp != fvp) {
619 			error = smbfs_smb_delete(VTOSMB(tvp), scred);
620 			if (error)
621 				goto out_cacherem;
622 			VTOSMB(fvp)->n_flag |= NGONE;
623 		}
624 		error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
625 		    tcnp->cn_nameptr, tcnp->cn_namelen, scred);
626 	}
627 
628 	if (fvp->v_type == VDIR) {
629 		if (tvp != NULL && tvp->v_type == VDIR)
630 			cache_purge(tdvp);
631 		cache_purge(fdvp);
632 	}
633 
634 out_cacherem:
635 	smbfs_attr_cacheremove(fdvp);
636 	smbfs_attr_cacheremove(tdvp);
637 out:
638 	smbfs_free_scred(scred);
639 	if (tdvp == tvp)
640 		vrele(tdvp);
641 	else
642 		vput(tdvp);
643 	if (tvp)
644 		vput(tvp);
645 	vrele(fdvp);
646 	vrele(fvp);
647 #ifdef possible_mistake
648 	vgone(fvp);
649 	if (tvp)
650 		vgone(tvp);
651 #endif
652 	return error;
653 }
654 
655 /*
656  * somtime it will come true...
657  */
658 static int
659 smbfs_link(ap)
660 	struct vop_link_args /* {
661 		struct vnode *a_tdvp;
662 		struct vnode *a_vp;
663 		struct componentname *a_cnp;
664 	} */ *ap;
665 {
666 	return EOPNOTSUPP;
667 }
668 
669 /*
670  * smbfs_symlink link create call.
671  * Sometime it will be functional...
672  */
673 static int
674 smbfs_symlink(ap)
675 	struct vop_symlink_args /* {
676 		struct vnode *a_dvp;
677 		struct vnode **a_vpp;
678 		struct componentname *a_cnp;
679 		struct vattr *a_vap;
680 		char *a_target;
681 	} */ *ap;
682 {
683 	return EOPNOTSUPP;
684 }
685 
686 static int
687 smbfs_mknod(ap)
688 	struct vop_mknod_args /* {
689 	} */ *ap;
690 {
691 	return EOPNOTSUPP;
692 }
693 
694 static int
695 smbfs_mkdir(ap)
696 	struct vop_mkdir_args /* {
697 		struct vnode *a_dvp;
698 		struct vnode **a_vpp;
699 		struct componentname *a_cnp;
700 		struct vattr *a_vap;
701 	} */ *ap;
702 {
703 	struct vnode *dvp = ap->a_dvp;
704 /*	struct vattr *vap = ap->a_vap;*/
705 	struct vnode *vp;
706 	struct componentname *cnp = ap->a_cnp;
707 	struct smbnode *dnp = VTOSMB(dvp);
708 	struct vattr vattr;
709 	struct smb_cred *scred;
710 	struct smbfattr fattr;
711 	char *name = cnp->cn_nameptr;
712 	int len = cnp->cn_namelen;
713 	int error;
714 
715 	if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) {
716 		return error;
717 	}
718 	if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.'))))
719 		return EEXIST;
720 	scred = smbfs_malloc_scred();
721 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
722 	error = smbfs_smb_mkdir(dnp, name, len, scred);
723 	if (error)
724 		goto out;
725 	error = smbfs_smb_lookup(dnp, name, len, &fattr, scred);
726 	if (error)
727 		goto out;
728 	error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
729 	if (error)
730 		goto out;
731 	*ap->a_vpp = vp;
732 out:
733 	smbfs_free_scred(scred);
734 	return error;
735 }
736 
737 /*
738  * smbfs_remove directory call
739  */
740 static int
741 smbfs_rmdir(ap)
742 	struct vop_rmdir_args /* {
743 		struct vnode *a_dvp;
744 		struct vnode *a_vp;
745 		struct componentname *a_cnp;
746 	} */ *ap;
747 {
748 	struct vnode *vp = ap->a_vp;
749 	struct vnode *dvp = ap->a_dvp;
750 	struct componentname *cnp = ap->a_cnp;
751 /*	struct smbmount *smp = VTOSMBFS(vp);*/
752 	struct smbnode *dnp = VTOSMB(dvp);
753 	struct smbnode *np = VTOSMB(vp);
754 	struct smb_cred *scred;
755 	int error;
756 
757 	if (dvp == vp)
758 		return EINVAL;
759 
760 	scred = smbfs_malloc_scred();
761 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
762 	error = smbfs_smb_rmdir(np, scred);
763 	if (error == 0)
764 		np->n_flag |= NGONE;
765 	dnp->n_flag |= NMODIFIED;
766 	smbfs_attr_cacheremove(dvp);
767 /*	cache_purge(dvp);*/
768 	cache_purge(vp);
769 	smbfs_free_scred(scred);
770 	return error;
771 }
772 
773 /*
774  * smbfs_readdir call
775  */
776 static int
777 smbfs_readdir(ap)
778 	struct vop_readdir_args /* {
779 		struct vnode *a_vp;
780 		struct uio *a_uio;
781 		struct ucred *a_cred;
782 		int *a_eofflag;
783 		u_long *a_cookies;
784 		int a_ncookies;
785 	} */ *ap;
786 {
787 	struct vnode *vp = ap->a_vp;
788 	struct uio *uio = ap->a_uio;
789 	int error;
790 
791 	if (vp->v_type != VDIR)
792 		return (EPERM);
793 #ifdef notnow
794 	if (ap->a_ncookies) {
795 		printf("smbfs_readdir: no support for cookies now...");
796 		return (EOPNOTSUPP);
797 	}
798 #endif
799 	error = smbfs_readvnode(vp, uio, ap->a_cred);
800 	return error;
801 }
802 
803 /* ARGSUSED */
804 static int
805 smbfs_fsync(ap)
806 	struct vop_fsync_args /* {
807 		struct vnodeop_desc *a_desc;
808 		struct vnode * a_vp;
809 		struct ucred * a_cred;
810 		int  a_waitfor;
811 		struct thread * a_td;
812 	} */ *ap;
813 {
814 /*	return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
815     return (0);
816 }
817 
818 static
819 int smbfs_print (ap)
820 	struct vop_print_args /* {
821 	struct vnode *a_vp;
822 	} */ *ap;
823 {
824 	struct vnode *vp = ap->a_vp;
825 	struct smbnode *np = VTOSMB(vp);
826 
827 	if (np == NULL) {
828 		printf("no smbnode data\n");
829 		return (0);
830 	}
831 	printf("\tname = %s, parent = %p, open = %d\n", np->n_name,
832 	    np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0);
833 	return (0);
834 }
835 
836 static int
837 smbfs_pathconf (ap)
838 	struct vop_pathconf_args  /* {
839 	struct vnode *vp;
840 	int name;
841 	register_t *retval;
842 	} */ *ap;
843 {
844 	struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp));
845 	struct smb_vc *vcp = SSTOVC(smp->sm_share);
846 	register_t *retval = ap->a_retval;
847 	int error = 0;
848 
849 	switch (ap->a_name) {
850 	    case _PC_LINK_MAX:
851 		*retval = 0;
852 		break;
853 	    case _PC_NAME_MAX:
854 		*retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12;
855 		break;
856 	    case _PC_PATH_MAX:
857 		*retval = 800;	/* XXX: a correct one ? */
858 		break;
859 	    default:
860 		error = EINVAL;
861 	}
862 	return error;
863 }
864 
865 static int
866 smbfs_strategy (ap)
867 	struct vop_strategy_args /* {
868 	struct buf *a_bp
869 	} */ *ap;
870 {
871 	struct buf *bp=ap->a_bp;
872 	struct ucred *cr;
873 	struct thread *td;
874 
875 	SMBVDEBUG("\n");
876 	if (bp->b_flags & B_ASYNC)
877 		td = (struct thread *)0;
878 	else
879 		td = curthread;	/* XXX */
880 	if (bp->b_iocmd == BIO_READ)
881 		cr = bp->b_rcred;
882 	else
883 		cr = bp->b_wcred;
884 
885 	if ((bp->b_flags & B_ASYNC) == 0 )
886 		(void)smbfs_doio(ap->a_vp, bp, cr, td);
887 	return (0);
888 }
889 
890 int
891 smbfs_ioctl(ap)
892 	struct vop_ioctl_args /* {
893 		struct vnode *a_vp;
894 		u_long a_command;
895 		caddr_t a_data;
896 		int fflag;
897 		struct ucred *cred;
898 		struct thread *td;
899 	} */ *ap;
900 {
901 	return ENOTTY;
902 }
903 
904 static char smbfs_atl[] = "rhsvda";
905 static int
906 smbfs_getextattr(struct vop_getextattr_args *ap)
907 /* {
908         IN struct vnode *a_vp;
909         IN char *a_name;
910         INOUT struct uio *a_uio;
911         IN struct ucred *a_cred;
912         IN struct thread *a_td;
913 };
914 */
915 {
916 	struct vnode *vp = ap->a_vp;
917 	struct thread *td = ap->a_td;
918 	struct ucred *cred = ap->a_cred;
919 	struct uio *uio = ap->a_uio;
920 	const char *name = ap->a_name;
921 	struct smbnode *np = VTOSMB(vp);
922 	struct vattr vattr;
923 	char buf[10];
924 	int i, attr, error;
925 
926 	error = VOP_ACCESS(vp, VREAD, cred, td);
927 	if (error)
928 		return error;
929 	error = VOP_GETATTR(vp, &vattr, cred);
930 	if (error)
931 		return error;
932 	if (strcmp(name, "dosattr") == 0) {
933 		attr = np->n_dosattr;
934 		for (i = 0; i < 6; i++, attr >>= 1)
935 			buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
936 		buf[i] = 0;
937 		error = uiomove(buf, i, uio);
938 
939 	} else
940 		error = EINVAL;
941 	return error;
942 }
943 
944 /*
945  * Since we expected to support F_GETLK (and SMB protocol has no such function),
946  * it is necessary to use lf_advlock(). It would be nice if this function had
947  * a callback mechanism because it will help to improve a level of consistency.
948  */
949 int
950 smbfs_advlock(ap)
951 	struct vop_advlock_args /* {
952 		struct vnode *a_vp;
953 		caddr_t  a_id;
954 		int  a_op;
955 		struct flock *a_fl;
956 		int  a_flags;
957 	} */ *ap;
958 {
959 	struct vnode *vp = ap->a_vp;
960 	struct smbnode *np = VTOSMB(vp);
961 	struct flock *fl = ap->a_fl;
962 	caddr_t id = (caddr_t)1 /* ap->a_id */;
963 /*	int flags = ap->a_flags;*/
964 	struct thread *td = curthread;
965 	struct smb_cred *scred;
966 	u_quad_t size;
967 	off_t start, end, oadd;
968 	int error, lkop;
969 
970 	if (vp->v_type == VDIR) {
971 		/*
972 		 * SMB protocol have no support for directory locking.
973 		 * Although locks can be processed on local machine, I don't
974 		 * think that this is a good idea, because some programs
975 		 * can work wrong assuming directory is locked. So, we just
976 		 * return 'operation not supported
977 		 */
978 		 return EOPNOTSUPP;
979 	}
980 	size = np->n_size;
981 	switch (fl->l_whence) {
982 
983 	case SEEK_SET:
984 	case SEEK_CUR:
985 		start = fl->l_start;
986 		break;
987 
988 	case SEEK_END:
989 		if (size > OFF_MAX ||
990 		    (fl->l_start > 0 && size > OFF_MAX - fl->l_start))
991 			return EOVERFLOW;
992 		start = size + fl->l_start;
993 		break;
994 
995 	default:
996 		return EINVAL;
997 	}
998 	if (start < 0)
999 		return EINVAL;
1000 	if (fl->l_len < 0) {
1001 		if (start == 0)
1002 			return EINVAL;
1003 		end = start - 1;
1004 		start += fl->l_len;
1005 		if (start < 0)
1006 			return EINVAL;
1007 	} else if (fl->l_len == 0)
1008 		end = -1;
1009 	else {
1010 		oadd = fl->l_len - 1;
1011 		if (oadd > OFF_MAX - start)
1012 			return EOVERFLOW;
1013 		end = start + oadd;
1014 	}
1015 	scred = smbfs_malloc_scred();
1016 	smb_makescred(scred, td, td->td_ucred);
1017 	switch (ap->a_op) {
1018 	    case F_SETLK:
1019 		switch (fl->l_type) {
1020 		    case F_WRLCK:
1021 			lkop = SMB_LOCK_EXCL;
1022 			break;
1023 		    case F_RDLCK:
1024 			lkop = SMB_LOCK_SHARED;
1025 			break;
1026 		    case F_UNLCK:
1027 			lkop = SMB_LOCK_RELEASE;
1028 			break;
1029 		    default:
1030 			smbfs_free_scred(scred);
1031 			return EINVAL;
1032 		}
1033 		error = lf_advlock(ap, &vp->v_lockf, size);
1034 		if (error)
1035 			break;
1036 		lkop = SMB_LOCK_EXCL;
1037 		error = smbfs_smb_lock(np, lkop, id, start, end, scred);
1038 		if (error) {
1039 			int oldtype = fl->l_type;
1040 			fl->l_type = F_UNLCK;
1041 			ap->a_op = F_UNLCK;
1042 			lf_advlock(ap, &vp->v_lockf, size);
1043 			fl->l_type = oldtype;
1044 		}
1045 		break;
1046 	    case F_UNLCK:
1047 		lf_advlock(ap, &vp->v_lockf, size);
1048 		error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, scred);
1049 		break;
1050 	    case F_GETLK:
1051 		error = lf_advlock(ap, &vp->v_lockf, size);
1052 		break;
1053 	    default:
1054 		smbfs_free_scred(scred);
1055 		return EINVAL;
1056 	}
1057 	smbfs_free_scred(scred);
1058 	return error;
1059 }
1060 
1061 static int
1062 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop)
1063 {
1064 	static const char *badchars = "*/:<>;?";
1065 	static const char *badchars83 = " +|,[]=";
1066 	const char *cp;
1067 	int i, error;
1068 
1069 	/*
1070 	 * Backslash characters, being a path delimiter, are prohibited
1071 	 * within a path component even for LOOKUP operations.
1072 	 */
1073 	if (strchr(name, '\\') != NULL)
1074 		return ENOENT;
1075 
1076 	if (nameiop == LOOKUP)
1077 		return 0;
1078 	error = ENOENT;
1079 	if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
1080 		/*
1081 		 * Name should conform 8.3 format
1082 		 */
1083 		if (nmlen > 12)
1084 			return ENAMETOOLONG;
1085 		cp = strchr(name, '.');
1086 		if (cp == NULL)
1087 			return error;
1088 		if (cp == name || (cp - name) > 8)
1089 			return error;
1090 		cp = strchr(cp + 1, '.');
1091 		if (cp != NULL)
1092 			return error;
1093 		for (cp = name, i = 0; i < nmlen; i++, cp++)
1094 			if (strchr(badchars83, *cp) != NULL)
1095 				return error;
1096 	}
1097 	for (cp = name, i = 0; i < nmlen; i++, cp++)
1098 		if (strchr(badchars, *cp) != NULL)
1099 			return error;
1100 	return 0;
1101 }
1102 
1103 /*
1104  * Things go even weird without fixed inode numbers...
1105  */
1106 int
1107 smbfs_lookup(ap)
1108 	struct vop_lookup_args /* {
1109 		struct vnodeop_desc *a_desc;
1110 		struct vnode *a_dvp;
1111 		struct vnode **a_vpp;
1112 		struct componentname *a_cnp;
1113 	} */ *ap;
1114 {
1115 	struct componentname *cnp = ap->a_cnp;
1116 	struct thread *td = cnp->cn_thread;
1117 	struct vnode *dvp = ap->a_dvp;
1118 	struct vnode **vpp = ap->a_vpp;
1119 	struct vnode *vp;
1120 	struct smbmount *smp;
1121 	struct mount *mp = dvp->v_mount;
1122 	struct smbnode *dnp;
1123 	struct smbfattr fattr, *fap;
1124 	struct smb_cred *scred;
1125 	char *name = cnp->cn_nameptr;
1126 	int flags = cnp->cn_flags;
1127 	int nameiop = cnp->cn_nameiop;
1128 	int nmlen = cnp->cn_namelen;
1129 	int error, islastcn, isdot;
1130 	int killit;
1131 
1132 	SMBVDEBUG("\n");
1133 	if (dvp->v_type != VDIR)
1134 		return ENOTDIR;
1135 	if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) {
1136 		SMBFSERR("invalid '..'\n");
1137 		return EIO;
1138 	}
1139 	islastcn = flags & ISLASTCN;
1140 	if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP))
1141 		return EROFS;
1142 	if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0)
1143 		return error;
1144 	smp = VFSTOSMBFS(mp);
1145 	dnp = VTOSMB(dvp);
1146 	isdot = (nmlen == 1 && name[0] == '.');
1147 
1148 	error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop);
1149 
1150 	if (error)
1151 		return ENOENT;
1152 
1153 	error = cache_lookup(dvp, vpp, cnp, NULL, NULL);
1154 	SMBVDEBUG("cache_lookup returned %d\n", error);
1155 	if (error > 0)
1156 		return error;
1157 	if (error) {		/* name was found */
1158 		struct vattr vattr;
1159 
1160 		killit = 0;
1161 		vp = *vpp;
1162 		error = VOP_GETATTR(vp, &vattr, cnp->cn_cred);
1163 		/*
1164 		 * If the file type on the server is inconsistent
1165 		 * with what it was when we created the vnode,
1166 		 * kill the bogus vnode now and fall through to
1167 		 * the code below to create a new one with the
1168 		 * right type.
1169 		 */
1170 		if (error == 0 &&
1171 		   ((vp->v_type == VDIR &&
1172 		   (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) == 0) ||
1173 		   (vp->v_type == VREG &&
1174 		   (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) != 0)))
1175 		   killit = 1;
1176 		else if (error == 0
1177 	     /*    && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) {
1178 		     if (nameiop != LOOKUP && islastcn)
1179 			     cnp->cn_flags |= SAVENAME;
1180 		     SMBVDEBUG("use cached vnode\n");
1181 		     return (0);
1182 		}
1183 		cache_purge(vp);
1184 		/*
1185 		 * XXX This is not quite right, if '.' is
1186 		 * inconsistent, we really need to start the lookup
1187 		 * all over again.  Hopefully there is some other
1188 		 * guarantee that prevents this case from happening.
1189 		 */
1190 		if (killit && vp != dvp)
1191 			vgone(vp);
1192 		if (vp != dvp)
1193 			vput(vp);
1194 		else
1195 			vrele(vp);
1196 		*vpp = NULLVP;
1197 	}
1198 	/*
1199 	 * entry is not in the cache or has been expired
1200 	 */
1201 	error = 0;
1202 	*vpp = NULLVP;
1203 	scred = smbfs_malloc_scred();
1204 	smb_makescred(scred, td, cnp->cn_cred);
1205 	fap = &fattr;
1206 	if (flags & ISDOTDOT) {
1207 		/*
1208 		 * In the DOTDOT case, don't go over-the-wire
1209 		 * in order to request attributes. We already
1210 		 * know it's a directory and subsequent call to
1211 		 * smbfs_getattr() will restore consistency.
1212 		 *
1213 		 */
1214 		SMBVDEBUG("smbfs_smb_lookup: dotdot\n");
1215 	} else if (isdot) {
1216 		error = smbfs_smb_lookup(dnp, NULL, 0, fap, scred);
1217 		SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1218 	}
1219 	else {
1220 		error = smbfs_smb_lookup(dnp, name, nmlen, fap, scred);
1221 		SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1222 	}
1223 	if (error && error != ENOENT)
1224 		goto out;
1225 	if (error) {			/* entry not found */
1226 		/*
1227 		 * Handle RENAME or CREATE case...
1228 		 */
1229 		if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
1230 			error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1231 			if (error)
1232 				goto out;
1233 			cnp->cn_flags |= SAVENAME;
1234 			error = EJUSTRETURN;
1235 			goto out;
1236 		}
1237 		error = ENOENT;
1238 		goto out;
1239 	}/* else {
1240 		SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
1241 	}*/
1242 	/*
1243 	 * handle DELETE case ...
1244 	 */
1245 	if (nameiop == DELETE && islastcn) { 	/* delete last component */
1246 		error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1247 		if (error)
1248 			goto out;
1249 		if (isdot) {
1250 			VREF(dvp);
1251 			*vpp = dvp;
1252 			goto out;
1253 		}
1254 		error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1255 		if (error)
1256 			goto out;
1257 		*vpp = vp;
1258 		cnp->cn_flags |= SAVENAME;
1259 		goto out;
1260 	}
1261 	if (nameiop == RENAME && islastcn) {
1262 		error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1263 		if (error)
1264 			goto out;
1265 		if (isdot) {
1266 			error = EISDIR;
1267 			goto out;
1268 		}
1269 		error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1270 		if (error)
1271 			goto out;
1272 		*vpp = vp;
1273 		cnp->cn_flags |= SAVENAME;
1274 		goto out;
1275 	}
1276 	if (flags & ISDOTDOT) {
1277 		mp = dvp->v_mount;
1278 		error = vfs_busy(mp, MBF_NOWAIT);
1279 		if (error != 0) {
1280 			vfs_ref(mp);
1281 			VOP_UNLOCK(dvp, 0);
1282 			error = vfs_busy(mp, 0);
1283 			vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1284 			vfs_rel(mp);
1285 			if (error)
1286 				return (ENOENT);
1287 			if ((dvp->v_iflag & VI_DOOMED) != 0) {
1288 				vfs_unbusy(mp);
1289 				return (ENOENT);
1290 			}
1291 		}
1292 		VOP_UNLOCK(dvp, 0);
1293 		error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp);
1294 		vfs_unbusy(mp);
1295 		vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1296 		if ((dvp->v_iflag & VI_DOOMED) != 0) {
1297 			if (error == 0)
1298 				vput(vp);
1299 			error = ENOENT;
1300 		}
1301 		if (error)
1302 			goto out;
1303 		*vpp = vp;
1304 	} else if (isdot) {
1305 		vref(dvp);
1306 		*vpp = dvp;
1307 	} else {
1308 		error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1309 		if (error)
1310 			goto out;
1311 		*vpp = vp;
1312 		SMBVDEBUG("lookup: getnewvp!\n");
1313 	}
1314 	if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) {
1315 /*		VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/
1316 		cache_enter(dvp, *vpp, cnp);
1317 	}
1318 out:
1319 	smbfs_free_scred(scred);
1320 	return (error);
1321 }
1322