xref: /freebsd/sys/fs/smbfs/smbfs_vnops.c (revision 39ee7a7a6bdd1557b1c3532abf60d139798ac88b)
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 	isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
309 	/*
310 	 * Disallow write attempts if the filesystem is mounted read-only.
311 	 */
312   	if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
313 	     vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
314 	     vap->va_mode != (mode_t)VNOVAL || vap->va_flags != VNOVAL) &&
315 	     isreadonly)
316 		return EROFS;
317 
318 	/*
319 	 * We only support setting four flags.  Don't allow setting others.
320 	 *
321 	 * We map UF_READONLY to SMB_FA_RDONLY, unlike the MacOS X version
322 	 * of this code, which maps both UF_IMMUTABLE AND SF_IMMUTABLE to
323 	 * SMB_FA_RDONLY.  The immutable flags have different semantics
324 	 * than readonly, which is the reason for the difference.
325 	 */
326 	if (vap->va_flags != VNOVAL) {
327 		if (vap->va_flags & ~(UF_HIDDEN|UF_SYSTEM|UF_ARCHIVE|
328 				      UF_READONLY))
329 			return EINVAL;
330 	}
331 
332 	scred = smbfs_malloc_scred();
333 	smb_makescred(scred, td, ap->a_cred);
334 	if (vap->va_size != VNOVAL) {
335  		switch (vp->v_type) {
336  		    case VDIR:
337  			error = EISDIR;
338 			goto out;
339  		    case VREG:
340 			break;
341  		    default:
342 			error = EINVAL;
343 			goto out;
344   		};
345 		if (isreadonly) {
346 			error = EROFS;
347 			goto out;
348 		}
349 		doclose = 0;
350 		vnode_pager_setsize(vp, (u_long)vap->va_size);
351  		tsize = np->n_size;
352  		np->n_size = vap->va_size;
353 		if ((np->n_flag & NOPEN) == 0) {
354 			error = smbfs_smb_open(np,
355 					       SMB_SM_DENYNONE|SMB_AM_OPENRW,
356 					       scred);
357 			if (error == 0)
358 				doclose = 1;
359 		}
360 		if (error == 0)
361 			error = smbfs_smb_setfsize(np, vap->va_size, scred);
362 		if (doclose)
363 			smbfs_smb_close(ssp, np->n_fid, NULL, scred);
364 		if (error) {
365 			np->n_size = tsize;
366 			vnode_pager_setsize(vp, (u_long)tsize);
367 			goto out;
368 		}
369   	}
370 	if ((vap->va_flags != VNOVAL) || (vap->va_mode != (mode_t)VNOVAL)) {
371 		old_n_dosattr = np->n_dosattr;
372 
373 		if (vap->va_mode != (mode_t)VNOVAL) {
374 			if (vap->va_mode & S_IWUSR)
375 				np->n_dosattr &= ~SMB_FA_RDONLY;
376 			else
377 				np->n_dosattr |= SMB_FA_RDONLY;
378 		}
379 
380 		if (vap->va_flags != VNOVAL) {
381 			if (vap->va_flags & UF_HIDDEN)
382 				np->n_dosattr |= SMB_FA_HIDDEN;
383 			else
384 				np->n_dosattr &= ~SMB_FA_HIDDEN;
385 
386 			if (vap->va_flags & UF_SYSTEM)
387 				np->n_dosattr |= SMB_FA_SYSTEM;
388 			else
389 				np->n_dosattr &= ~SMB_FA_SYSTEM;
390 
391 			if (vap->va_flags & UF_ARCHIVE)
392 				np->n_dosattr |= SMB_FA_ARCHIVE;
393 			else
394 				np->n_dosattr &= ~SMB_FA_ARCHIVE;
395 
396 			/*
397 			 * We only support setting the immutable / readonly
398 			 * bit for regular files.  According to comments in
399 			 * the MacOS X version of this code, supporting the
400 			 * readonly bit on directories doesn't do the same
401 			 * thing in Windows as in Unix.
402 			 */
403 			if (vp->v_type == VREG) {
404 				if (vap->va_flags & UF_READONLY)
405 					np->n_dosattr |= SMB_FA_RDONLY;
406 				else
407 					np->n_dosattr &= ~SMB_FA_RDONLY;
408 			}
409 		}
410 
411 		if (np->n_dosattr != old_n_dosattr) {
412 			error = smbfs_smb_setpattr(np, np->n_dosattr, NULL, scred);
413 			if (error)
414 				goto out;
415 		}
416 	}
417 	mtime = atime = NULL;
418 	if (vap->va_mtime.tv_sec != VNOVAL)
419 		mtime = &vap->va_mtime;
420 	if (vap->va_atime.tv_sec != VNOVAL)
421 		atime = &vap->va_atime;
422 	if (mtime != atime) {
423 		if (vap->va_vaflags & VA_UTIMES_NULL) {
424 			error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
425 			if (error)
426 				error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td);
427 		} else
428 			error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
429 #if 0
430 		if (mtime == NULL)
431 			mtime = &np->n_mtime;
432 		if (atime == NULL)
433 			atime = &np->n_atime;
434 #endif
435 		/*
436 		 * If file is opened, then we can use handle based calls.
437 		 * If not, use path based ones.
438 		 */
439 		if ((np->n_flag & NOPEN) == 0) {
440 			if (vcp->vc_flags & SMBV_WIN95) {
441 				error = VOP_OPEN(vp, FWRITE, ap->a_cred, td,
442 				    NULL);
443 				if (!error) {
444 /*					error = smbfs_smb_setfattrNT(np, 0,
445 					    mtime, atime, scred);
446 					VOP_GETATTR(vp, &vattr, ap->a_cred); */
447 					if (mtime)
448 						np->n_mtime = *mtime;
449 					VOP_CLOSE(vp, FWRITE, ap->a_cred, td);
450 				}
451 			} else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) {
452 				error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
453 /*				error = smbfs_smb_setpattrNT(np, 0, mtime, atime, scred);*/
454 			} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
455 				error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
456 			} else {
457 				error = smbfs_smb_setpattr(np, 0, mtime, scred);
458 			}
459 		} else {
460 			if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) {
461 				error = smbfs_smb_setfattrNT(np, 0, mtime, atime, scred);
462 			} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
463 				error = smbfs_smb_setftime(np, mtime, atime, scred);
464 			} else {
465 				/*
466 				 * I have no idea how to handle this for core
467 				 * level servers. The possible solution is to
468 				 * update mtime after file is closed.
469 				 */
470 				 SMBERROR("can't update times on an opened file\n");
471 			}
472 		}
473 	}
474 	/*
475 	 * Invalidate attribute cache in case if server doesn't set
476 	 * required attributes.
477 	 */
478 	smbfs_attr_cacheremove(vp);	/* invalidate cache */
479 	VOP_GETATTR(vp, vap, ap->a_cred);
480 	np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
481 out:
482 	smbfs_free_scred(scred);
483 	return error;
484 }
485 /*
486  * smbfs_read call.
487  */
488 static int
489 smbfs_read(ap)
490 	struct vop_read_args /* {
491 		struct vnode *a_vp;
492 		struct uio *a_uio;
493 		int  a_ioflag;
494 		struct ucred *a_cred;
495 	} */ *ap;
496 {
497 	struct vnode *vp = ap->a_vp;
498 	struct uio *uio = ap->a_uio;
499 
500 	SMBVDEBUG("\n");
501 	if (vp->v_type != VREG && vp->v_type != VDIR)
502 		return EPERM;
503 	return smbfs_readvnode(vp, uio, ap->a_cred);
504 }
505 
506 static int
507 smbfs_write(ap)
508 	struct vop_write_args /* {
509 		struct vnode *a_vp;
510 		struct uio *a_uio;
511 		int  a_ioflag;
512 		struct ucred *a_cred;
513 	} */ *ap;
514 {
515 	struct vnode *vp = ap->a_vp;
516 	struct uio *uio = ap->a_uio;
517 
518 	SMBVDEBUG("%d,ofs=%jd,sz=%zd\n",vp->v_type, (intmax_t)uio->uio_offset,
519 	    uio->uio_resid);
520 	if (vp->v_type != VREG)
521 		return (EPERM);
522 	return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
523 }
524 /*
525  * smbfs_create call
526  * Create a regular file. On entry the directory to contain the file being
527  * created is locked.  We must release before we return. We must also free
528  * the pathname buffer pointed at by cnp->cn_pnbuf, always on error, or
529  * only if the SAVESTART bit in cn_flags is clear on success.
530  */
531 static int
532 smbfs_create(ap)
533 	struct vop_create_args /* {
534 		struct vnode *a_dvp;
535 		struct vnode **a_vpp;
536 		struct componentname *a_cnp;
537 		struct vattr *a_vap;
538 	} */ *ap;
539 {
540 	struct vnode *dvp = ap->a_dvp;
541 	struct vattr *vap = ap->a_vap;
542 	struct vnode **vpp=ap->a_vpp;
543 	struct componentname *cnp = ap->a_cnp;
544 	struct smbnode *dnp = VTOSMB(dvp);
545 	struct vnode *vp;
546 	struct vattr vattr;
547 	struct smbfattr fattr;
548 	struct smb_cred *scred;
549 	char *name = cnp->cn_nameptr;
550 	int nmlen = cnp->cn_namelen;
551 	int error;
552 
553 
554 	SMBVDEBUG("\n");
555 	*vpp = NULL;
556 	if (vap->va_type != VREG)
557 		return EOPNOTSUPP;
558 	if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
559 		return error;
560 	scred = smbfs_malloc_scred();
561 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
562 
563 	error = smbfs_smb_create(dnp, name, nmlen, scred);
564 	if (error)
565 		goto out;
566 	error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, scred);
567 	if (error)
568 		goto out;
569 	error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp);
570 	if (error)
571 		goto out;
572 	*vpp = vp;
573 	if (cnp->cn_flags & MAKEENTRY)
574 		cache_enter(dvp, vp, cnp);
575 out:
576 	smbfs_free_scred(scred);
577 	return error;
578 }
579 
580 static int
581 smbfs_remove(ap)
582 	struct vop_remove_args /* {
583 		struct vnodeop_desc *a_desc;
584 		struct vnode * a_dvp;
585 		struct vnode * a_vp;
586 		struct componentname * a_cnp;
587 	} */ *ap;
588 {
589 	struct vnode *vp = ap->a_vp;
590 /*	struct vnode *dvp = ap->a_dvp;*/
591 	struct componentname *cnp = ap->a_cnp;
592 	struct smbnode *np = VTOSMB(vp);
593 	struct smb_cred *scred;
594 	int error;
595 
596 	if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vrefcnt(vp) != 1)
597 		return EPERM;
598 	scred = smbfs_malloc_scred();
599 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
600 	error = smbfs_smb_delete(np, scred);
601 	if (error == 0)
602 		np->n_flag |= NGONE;
603 	cache_purge(vp);
604 	smbfs_free_scred(scred);
605 	return error;
606 }
607 
608 /*
609  * smbfs_file rename call
610  */
611 static int
612 smbfs_rename(ap)
613 	struct vop_rename_args  /* {
614 		struct vnode *a_fdvp;
615 		struct vnode *a_fvp;
616 		struct componentname *a_fcnp;
617 		struct vnode *a_tdvp;
618 		struct vnode *a_tvp;
619 		struct componentname *a_tcnp;
620 	} */ *ap;
621 {
622 	struct vnode *fvp = ap->a_fvp;
623 	struct vnode *tvp = ap->a_tvp;
624 	struct vnode *fdvp = ap->a_fdvp;
625 	struct vnode *tdvp = ap->a_tdvp;
626 	struct componentname *tcnp = ap->a_tcnp;
627 /*	struct componentname *fcnp = ap->a_fcnp;*/
628 	struct smb_cred *scred;
629 	u_int16_t flags = 6;
630 	int error=0;
631 
632 	scred = NULL;
633 	/* Check for cross-device rename */
634 	if ((fvp->v_mount != tdvp->v_mount) ||
635 	    (tvp && (fvp->v_mount != tvp->v_mount))) {
636 		error = EXDEV;
637 		goto out;
638 	}
639 
640 	if (tvp && vrefcnt(tvp) > 1) {
641 		error = EBUSY;
642 		goto out;
643 	}
644 	flags = 0x10;			/* verify all writes */
645 	if (fvp->v_type == VDIR) {
646 		flags |= 2;
647 	} else if (fvp->v_type == VREG) {
648 		flags |= 1;
649 	} else {
650 		return EINVAL;
651 	}
652 	scred = smbfs_malloc_scred();
653 	smb_makescred(scred, tcnp->cn_thread, tcnp->cn_cred);
654 	/*
655 	 * It seems that Samba doesn't implement SMB_COM_MOVE call...
656 	 */
657 #ifdef notnow
658 	if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
659 		error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
660 		    tcnp->cn_nameptr, tcnp->cn_namelen, flags, scred);
661 	} else
662 #endif
663 	{
664 		/*
665 		 * We have to do the work atomicaly
666 		 */
667 		if (tvp && tvp != fvp) {
668 			error = smbfs_smb_delete(VTOSMB(tvp), scred);
669 			if (error)
670 				goto out_cacherem;
671 			VTOSMB(fvp)->n_flag |= NGONE;
672 		}
673 		error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
674 		    tcnp->cn_nameptr, tcnp->cn_namelen, scred);
675 	}
676 
677 	if (fvp->v_type == VDIR) {
678 		if (tvp != NULL && tvp->v_type == VDIR)
679 			cache_purge(tdvp);
680 		cache_purge(fdvp);
681 	}
682 
683 out_cacherem:
684 	smbfs_attr_cacheremove(fdvp);
685 	smbfs_attr_cacheremove(tdvp);
686 out:
687 	smbfs_free_scred(scred);
688 	if (tdvp == tvp)
689 		vrele(tdvp);
690 	else
691 		vput(tdvp);
692 	if (tvp)
693 		vput(tvp);
694 	vrele(fdvp);
695 	vrele(fvp);
696 #ifdef possible_mistake
697 	vgone(fvp);
698 	if (tvp)
699 		vgone(tvp);
700 #endif
701 	return error;
702 }
703 
704 /*
705  * somtime it will come true...
706  */
707 static int
708 smbfs_link(ap)
709 	struct vop_link_args /* {
710 		struct vnode *a_tdvp;
711 		struct vnode *a_vp;
712 		struct componentname *a_cnp;
713 	} */ *ap;
714 {
715 	return EOPNOTSUPP;
716 }
717 
718 /*
719  * smbfs_symlink link create call.
720  * Sometime it will be functional...
721  */
722 static int
723 smbfs_symlink(ap)
724 	struct vop_symlink_args /* {
725 		struct vnode *a_dvp;
726 		struct vnode **a_vpp;
727 		struct componentname *a_cnp;
728 		struct vattr *a_vap;
729 		char *a_target;
730 	} */ *ap;
731 {
732 	return EOPNOTSUPP;
733 }
734 
735 static int
736 smbfs_mknod(ap)
737 	struct vop_mknod_args /* {
738 	} */ *ap;
739 {
740 	return EOPNOTSUPP;
741 }
742 
743 static int
744 smbfs_mkdir(ap)
745 	struct vop_mkdir_args /* {
746 		struct vnode *a_dvp;
747 		struct vnode **a_vpp;
748 		struct componentname *a_cnp;
749 		struct vattr *a_vap;
750 	} */ *ap;
751 {
752 	struct vnode *dvp = ap->a_dvp;
753 /*	struct vattr *vap = ap->a_vap;*/
754 	struct vnode *vp;
755 	struct componentname *cnp = ap->a_cnp;
756 	struct smbnode *dnp = VTOSMB(dvp);
757 	struct vattr vattr;
758 	struct smb_cred *scred;
759 	struct smbfattr fattr;
760 	char *name = cnp->cn_nameptr;
761 	int len = cnp->cn_namelen;
762 	int error;
763 
764 	if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) {
765 		return error;
766 	}
767 	if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.'))))
768 		return EEXIST;
769 	scred = smbfs_malloc_scred();
770 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
771 	error = smbfs_smb_mkdir(dnp, name, len, scred);
772 	if (error)
773 		goto out;
774 	error = smbfs_smb_lookup(dnp, name, len, &fattr, scred);
775 	if (error)
776 		goto out;
777 	error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
778 	if (error)
779 		goto out;
780 	*ap->a_vpp = vp;
781 out:
782 	smbfs_free_scred(scred);
783 	return error;
784 }
785 
786 /*
787  * smbfs_remove directory call
788  */
789 static int
790 smbfs_rmdir(ap)
791 	struct vop_rmdir_args /* {
792 		struct vnode *a_dvp;
793 		struct vnode *a_vp;
794 		struct componentname *a_cnp;
795 	} */ *ap;
796 {
797 	struct vnode *vp = ap->a_vp;
798 	struct vnode *dvp = ap->a_dvp;
799 	struct componentname *cnp = ap->a_cnp;
800 /*	struct smbmount *smp = VTOSMBFS(vp);*/
801 	struct smbnode *dnp = VTOSMB(dvp);
802 	struct smbnode *np = VTOSMB(vp);
803 	struct smb_cred *scred;
804 	int error;
805 
806 	if (dvp == vp)
807 		return EINVAL;
808 
809 	scred = smbfs_malloc_scred();
810 	smb_makescred(scred, cnp->cn_thread, cnp->cn_cred);
811 	error = smbfs_smb_rmdir(np, scred);
812 	if (error == 0)
813 		np->n_flag |= NGONE;
814 	dnp->n_flag |= NMODIFIED;
815 	smbfs_attr_cacheremove(dvp);
816 /*	cache_purge(dvp);*/
817 	cache_purge(vp);
818 	smbfs_free_scred(scred);
819 	return error;
820 }
821 
822 /*
823  * smbfs_readdir call
824  */
825 static int
826 smbfs_readdir(ap)
827 	struct vop_readdir_args /* {
828 		struct vnode *a_vp;
829 		struct uio *a_uio;
830 		struct ucred *a_cred;
831 		int *a_eofflag;
832 		u_long *a_cookies;
833 		int a_ncookies;
834 	} */ *ap;
835 {
836 	struct vnode *vp = ap->a_vp;
837 	struct uio *uio = ap->a_uio;
838 	int error;
839 
840 	if (vp->v_type != VDIR)
841 		return (EPERM);
842 #ifdef notnow
843 	if (ap->a_ncookies) {
844 		printf("smbfs_readdir: no support for cookies now...");
845 		return (EOPNOTSUPP);
846 	}
847 #endif
848 	error = smbfs_readvnode(vp, uio, ap->a_cred);
849 	return error;
850 }
851 
852 /* ARGSUSED */
853 static int
854 smbfs_fsync(ap)
855 	struct vop_fsync_args /* {
856 		struct vnodeop_desc *a_desc;
857 		struct vnode * a_vp;
858 		struct ucred * a_cred;
859 		int  a_waitfor;
860 		struct thread * a_td;
861 	} */ *ap;
862 {
863 /*	return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
864     return (0);
865 }
866 
867 static
868 int smbfs_print (ap)
869 	struct vop_print_args /* {
870 	struct vnode *a_vp;
871 	} */ *ap;
872 {
873 	struct vnode *vp = ap->a_vp;
874 	struct smbnode *np = VTOSMB(vp);
875 
876 	if (np == NULL) {
877 		printf("no smbnode data\n");
878 		return (0);
879 	}
880 	printf("\tname = %s, parent = %p, open = %d\n", np->n_name,
881 	    np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0);
882 	return (0);
883 }
884 
885 static int
886 smbfs_pathconf (ap)
887 	struct vop_pathconf_args  /* {
888 	struct vnode *vp;
889 	int name;
890 	register_t *retval;
891 	} */ *ap;
892 {
893 	struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp));
894 	struct smb_vc *vcp = SSTOVC(smp->sm_share);
895 	register_t *retval = ap->a_retval;
896 	int error = 0;
897 
898 	switch (ap->a_name) {
899 	    case _PC_LINK_MAX:
900 		*retval = 0;
901 		break;
902 	    case _PC_NAME_MAX:
903 		*retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12;
904 		break;
905 	    case _PC_PATH_MAX:
906 		*retval = 800;	/* XXX: a correct one ? */
907 		break;
908 	    default:
909 		error = EINVAL;
910 	}
911 	return error;
912 }
913 
914 static int
915 smbfs_strategy (ap)
916 	struct vop_strategy_args /* {
917 	struct buf *a_bp
918 	} */ *ap;
919 {
920 	struct buf *bp=ap->a_bp;
921 	struct ucred *cr;
922 	struct thread *td;
923 
924 	SMBVDEBUG("\n");
925 	if (bp->b_flags & B_ASYNC)
926 		td = (struct thread *)0;
927 	else
928 		td = curthread;	/* XXX */
929 	if (bp->b_iocmd == BIO_READ)
930 		cr = bp->b_rcred;
931 	else
932 		cr = bp->b_wcred;
933 
934 	if ((bp->b_flags & B_ASYNC) == 0 )
935 		(void)smbfs_doio(ap->a_vp, bp, cr, td);
936 	return (0);
937 }
938 
939 int
940 smbfs_ioctl(ap)
941 	struct vop_ioctl_args /* {
942 		struct vnode *a_vp;
943 		u_long a_command;
944 		caddr_t a_data;
945 		int fflag;
946 		struct ucred *cred;
947 		struct thread *td;
948 	} */ *ap;
949 {
950 	return ENOTTY;
951 }
952 
953 static char smbfs_atl[] = "rhsvda";
954 static int
955 smbfs_getextattr(struct vop_getextattr_args *ap)
956 /* {
957         IN struct vnode *a_vp;
958         IN char *a_name;
959         INOUT struct uio *a_uio;
960         IN struct ucred *a_cred;
961         IN struct thread *a_td;
962 };
963 */
964 {
965 	struct vnode *vp = ap->a_vp;
966 	struct thread *td = ap->a_td;
967 	struct ucred *cred = ap->a_cred;
968 	struct uio *uio = ap->a_uio;
969 	const char *name = ap->a_name;
970 	struct smbnode *np = VTOSMB(vp);
971 	struct vattr vattr;
972 	char buf[10];
973 	int i, attr, error;
974 
975 	error = VOP_ACCESS(vp, VREAD, cred, td);
976 	if (error)
977 		return error;
978 	error = VOP_GETATTR(vp, &vattr, cred);
979 	if (error)
980 		return error;
981 	if (strcmp(name, "dosattr") == 0) {
982 		attr = np->n_dosattr;
983 		for (i = 0; i < 6; i++, attr >>= 1)
984 			buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
985 		buf[i] = 0;
986 		error = uiomove(buf, i, uio);
987 
988 	} else
989 		error = EINVAL;
990 	return error;
991 }
992 
993 /*
994  * Since we expected to support F_GETLK (and SMB protocol has no such function),
995  * it is necessary to use lf_advlock(). It would be nice if this function had
996  * a callback mechanism because it will help to improve a level of consistency.
997  */
998 int
999 smbfs_advlock(ap)
1000 	struct vop_advlock_args /* {
1001 		struct vnode *a_vp;
1002 		caddr_t  a_id;
1003 		int  a_op;
1004 		struct flock *a_fl;
1005 		int  a_flags;
1006 	} */ *ap;
1007 {
1008 	struct vnode *vp = ap->a_vp;
1009 	struct smbnode *np = VTOSMB(vp);
1010 	struct flock *fl = ap->a_fl;
1011 	caddr_t id = (caddr_t)1 /* ap->a_id */;
1012 /*	int flags = ap->a_flags;*/
1013 	struct thread *td = curthread;
1014 	struct smb_cred *scred;
1015 	u_quad_t size;
1016 	off_t start, end, oadd;
1017 	int error, lkop;
1018 
1019 	if (vp->v_type == VDIR) {
1020 		/*
1021 		 * SMB protocol have no support for directory locking.
1022 		 * Although locks can be processed on local machine, I don't
1023 		 * think that this is a good idea, because some programs
1024 		 * can work wrong assuming directory is locked. So, we just
1025 		 * return 'operation not supported
1026 		 */
1027 		 return EOPNOTSUPP;
1028 	}
1029 	size = np->n_size;
1030 	switch (fl->l_whence) {
1031 
1032 	case SEEK_SET:
1033 	case SEEK_CUR:
1034 		start = fl->l_start;
1035 		break;
1036 
1037 	case SEEK_END:
1038 		if (size > OFF_MAX ||
1039 		    (fl->l_start > 0 && size > OFF_MAX - fl->l_start))
1040 			return EOVERFLOW;
1041 		start = size + fl->l_start;
1042 		break;
1043 
1044 	default:
1045 		return EINVAL;
1046 	}
1047 	if (start < 0)
1048 		return EINVAL;
1049 	if (fl->l_len < 0) {
1050 		if (start == 0)
1051 			return EINVAL;
1052 		end = start - 1;
1053 		start += fl->l_len;
1054 		if (start < 0)
1055 			return EINVAL;
1056 	} else if (fl->l_len == 0)
1057 		end = -1;
1058 	else {
1059 		oadd = fl->l_len - 1;
1060 		if (oadd > OFF_MAX - start)
1061 			return EOVERFLOW;
1062 		end = start + oadd;
1063 	}
1064 	scred = smbfs_malloc_scred();
1065 	smb_makescred(scred, td, td->td_ucred);
1066 	switch (ap->a_op) {
1067 	    case F_SETLK:
1068 		switch (fl->l_type) {
1069 		    case F_WRLCK:
1070 			lkop = SMB_LOCK_EXCL;
1071 			break;
1072 		    case F_RDLCK:
1073 			lkop = SMB_LOCK_SHARED;
1074 			break;
1075 		    case F_UNLCK:
1076 			lkop = SMB_LOCK_RELEASE;
1077 			break;
1078 		    default:
1079 			smbfs_free_scred(scred);
1080 			return EINVAL;
1081 		}
1082 		error = lf_advlock(ap, &vp->v_lockf, size);
1083 		if (error)
1084 			break;
1085 		lkop = SMB_LOCK_EXCL;
1086 		error = smbfs_smb_lock(np, lkop, id, start, end, scred);
1087 		if (error) {
1088 			int oldtype = fl->l_type;
1089 			fl->l_type = F_UNLCK;
1090 			ap->a_op = F_UNLCK;
1091 			lf_advlock(ap, &vp->v_lockf, size);
1092 			fl->l_type = oldtype;
1093 		}
1094 		break;
1095 	    case F_UNLCK:
1096 		lf_advlock(ap, &vp->v_lockf, size);
1097 		error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, scred);
1098 		break;
1099 	    case F_GETLK:
1100 		error = lf_advlock(ap, &vp->v_lockf, size);
1101 		break;
1102 	    default:
1103 		smbfs_free_scred(scred);
1104 		return EINVAL;
1105 	}
1106 	smbfs_free_scred(scred);
1107 	return error;
1108 }
1109 
1110 static int
1111 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop)
1112 {
1113 	static const char *badchars = "*/:<>;?";
1114 	static const char *badchars83 = " +|,[]=";
1115 	const char *cp;
1116 	int i, error;
1117 
1118 	/*
1119 	 * Backslash characters, being a path delimiter, are prohibited
1120 	 * within a path component even for LOOKUP operations.
1121 	 */
1122 	if (strchr(name, '\\') != NULL)
1123 		return ENOENT;
1124 
1125 	if (nameiop == LOOKUP)
1126 		return 0;
1127 	error = ENOENT;
1128 	if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
1129 		/*
1130 		 * Name should conform 8.3 format
1131 		 */
1132 		if (nmlen > 12)
1133 			return ENAMETOOLONG;
1134 		cp = strchr(name, '.');
1135 		if (cp == NULL)
1136 			return error;
1137 		if (cp == name || (cp - name) > 8)
1138 			return error;
1139 		cp = strchr(cp + 1, '.');
1140 		if (cp != NULL)
1141 			return error;
1142 		for (cp = name, i = 0; i < nmlen; i++, cp++)
1143 			if (strchr(badchars83, *cp) != NULL)
1144 				return error;
1145 	}
1146 	for (cp = name, i = 0; i < nmlen; i++, cp++)
1147 		if (strchr(badchars, *cp) != NULL)
1148 			return error;
1149 	return 0;
1150 }
1151 
1152 /*
1153  * Things go even weird without fixed inode numbers...
1154  */
1155 int
1156 smbfs_lookup(ap)
1157 	struct vop_lookup_args /* {
1158 		struct vnodeop_desc *a_desc;
1159 		struct vnode *a_dvp;
1160 		struct vnode **a_vpp;
1161 		struct componentname *a_cnp;
1162 	} */ *ap;
1163 {
1164 	struct componentname *cnp = ap->a_cnp;
1165 	struct thread *td = cnp->cn_thread;
1166 	struct vnode *dvp = ap->a_dvp;
1167 	struct vnode **vpp = ap->a_vpp;
1168 	struct vnode *vp;
1169 	struct smbmount *smp;
1170 	struct mount *mp = dvp->v_mount;
1171 	struct smbnode *dnp;
1172 	struct smbfattr fattr, *fap;
1173 	struct smb_cred *scred;
1174 	char *name = cnp->cn_nameptr;
1175 	int flags = cnp->cn_flags;
1176 	int nameiop = cnp->cn_nameiop;
1177 	int nmlen = cnp->cn_namelen;
1178 	int error, islastcn, isdot;
1179 	int killit;
1180 
1181 	SMBVDEBUG("\n");
1182 	if (dvp->v_type != VDIR)
1183 		return ENOTDIR;
1184 	if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) {
1185 		SMBFSERR("invalid '..'\n");
1186 		return EIO;
1187 	}
1188 	islastcn = flags & ISLASTCN;
1189 	if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP))
1190 		return EROFS;
1191 	if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0)
1192 		return error;
1193 	smp = VFSTOSMBFS(mp);
1194 	dnp = VTOSMB(dvp);
1195 	isdot = (nmlen == 1 && name[0] == '.');
1196 
1197 	error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop);
1198 
1199 	if (error)
1200 		return ENOENT;
1201 
1202 	error = cache_lookup(dvp, vpp, cnp, NULL, NULL);
1203 	SMBVDEBUG("cache_lookup returned %d\n", error);
1204 	if (error > 0)
1205 		return error;
1206 	if (error) {		/* name was found */
1207 		struct vattr vattr;
1208 
1209 		killit = 0;
1210 		vp = *vpp;
1211 		error = VOP_GETATTR(vp, &vattr, cnp->cn_cred);
1212 		/*
1213 		 * If the file type on the server is inconsistent
1214 		 * with what it was when we created the vnode,
1215 		 * kill the bogus vnode now and fall through to
1216 		 * the code below to create a new one with the
1217 		 * right type.
1218 		 */
1219 		if (error == 0 &&
1220 		   ((vp->v_type == VDIR &&
1221 		   (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) == 0) ||
1222 		   (vp->v_type == VREG &&
1223 		   (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) != 0)))
1224 		   killit = 1;
1225 		else if (error == 0
1226 	     /*    && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) {
1227 		     if (nameiop != LOOKUP && islastcn)
1228 			     cnp->cn_flags |= SAVENAME;
1229 		     SMBVDEBUG("use cached vnode\n");
1230 		     return (0);
1231 		}
1232 		cache_purge(vp);
1233 		/*
1234 		 * XXX This is not quite right, if '.' is
1235 		 * inconsistent, we really need to start the lookup
1236 		 * all over again.  Hopefully there is some other
1237 		 * guarantee that prevents this case from happening.
1238 		 */
1239 		if (killit && vp != dvp)
1240 			vgone(vp);
1241 		if (vp != dvp)
1242 			vput(vp);
1243 		else
1244 			vrele(vp);
1245 		*vpp = NULLVP;
1246 	}
1247 	/*
1248 	 * entry is not in the cache or has been expired
1249 	 */
1250 	error = 0;
1251 	*vpp = NULLVP;
1252 	scred = smbfs_malloc_scred();
1253 	smb_makescred(scred, td, cnp->cn_cred);
1254 	fap = &fattr;
1255 	if (flags & ISDOTDOT) {
1256 		/*
1257 		 * In the DOTDOT case, don't go over-the-wire
1258 		 * in order to request attributes. We already
1259 		 * know it's a directory and subsequent call to
1260 		 * smbfs_getattr() will restore consistency.
1261 		 *
1262 		 */
1263 		SMBVDEBUG("smbfs_smb_lookup: dotdot\n");
1264 	} else if (isdot) {
1265 		error = smbfs_smb_lookup(dnp, NULL, 0, fap, scred);
1266 		SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1267 	}
1268 	else {
1269 		error = smbfs_smb_lookup(dnp, name, nmlen, fap, scred);
1270 		SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1271 	}
1272 	if (error && error != ENOENT)
1273 		goto out;
1274 	if (error) {			/* entry not found */
1275 		/*
1276 		 * Handle RENAME or CREATE case...
1277 		 */
1278 		if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
1279 			error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1280 			if (error)
1281 				goto out;
1282 			cnp->cn_flags |= SAVENAME;
1283 			error = EJUSTRETURN;
1284 			goto out;
1285 		}
1286 		error = ENOENT;
1287 		goto out;
1288 	}/* else {
1289 		SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
1290 	}*/
1291 	/*
1292 	 * handle DELETE case ...
1293 	 */
1294 	if (nameiop == DELETE && islastcn) { 	/* delete last component */
1295 		error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1296 		if (error)
1297 			goto out;
1298 		if (isdot) {
1299 			VREF(dvp);
1300 			*vpp = dvp;
1301 			goto out;
1302 		}
1303 		error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1304 		if (error)
1305 			goto out;
1306 		*vpp = vp;
1307 		cnp->cn_flags |= SAVENAME;
1308 		goto out;
1309 	}
1310 	if (nameiop == RENAME && islastcn) {
1311 		error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1312 		if (error)
1313 			goto out;
1314 		if (isdot) {
1315 			error = EISDIR;
1316 			goto out;
1317 		}
1318 		error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1319 		if (error)
1320 			goto out;
1321 		*vpp = vp;
1322 		cnp->cn_flags |= SAVENAME;
1323 		goto out;
1324 	}
1325 	if (flags & ISDOTDOT) {
1326 		mp = dvp->v_mount;
1327 		error = vfs_busy(mp, MBF_NOWAIT);
1328 		if (error != 0) {
1329 			vfs_ref(mp);
1330 			VOP_UNLOCK(dvp, 0);
1331 			error = vfs_busy(mp, 0);
1332 			vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1333 			vfs_rel(mp);
1334 			if (error) {
1335 				error = ENOENT;
1336 				goto out;
1337 			}
1338 			if ((dvp->v_iflag & VI_DOOMED) != 0) {
1339 				vfs_unbusy(mp);
1340 				error = ENOENT;
1341 				goto out;
1342 			}
1343 		}
1344 		VOP_UNLOCK(dvp, 0);
1345 		error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp);
1346 		vfs_unbusy(mp);
1347 		vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1348 		if ((dvp->v_iflag & VI_DOOMED) != 0) {
1349 			if (error == 0)
1350 				vput(vp);
1351 			error = ENOENT;
1352 		}
1353 		if (error)
1354 			goto out;
1355 		*vpp = vp;
1356 	} else if (isdot) {
1357 		vref(dvp);
1358 		*vpp = dvp;
1359 	} else {
1360 		error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1361 		if (error)
1362 			goto out;
1363 		*vpp = vp;
1364 		SMBVDEBUG("lookup: getnewvp!\n");
1365 	}
1366 	if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) {
1367 /*		VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/
1368 		cache_enter(dvp, *vpp, cnp);
1369 	}
1370 out:
1371 	smbfs_free_scred(scred);
1372 	return (error);
1373 }
1374