1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2000-2001 Boris Popov
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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 #include <netsmb/smb.h>
47 #include <netsmb/smb_conn.h>
48 #include <netsmb/smb_subr.h>
49
50 #include <fs/smbfs/smbfs.h>
51 #include <fs/smbfs/smbfs_node.h>
52 #include <fs/smbfs/smbfs_subr.h>
53
54 /*
55 * Prototypes for SMBFS vnode operations
56 */
57 static vop_create_t smbfs_create;
58 static vop_mknod_t smbfs_mknod;
59 static vop_open_t smbfs_open;
60 static vop_close_t smbfs_close;
61 static vop_access_t smbfs_access;
62 static vop_getattr_t smbfs_getattr;
63 static vop_setattr_t smbfs_setattr;
64 static vop_read_t smbfs_read;
65 static vop_write_t smbfs_write;
66 static vop_fsync_t smbfs_fsync;
67 static vop_remove_t smbfs_remove;
68 static vop_link_t smbfs_link;
69 static vop_lookup_t smbfs_lookup;
70 static vop_rename_t smbfs_rename;
71 static vop_mkdir_t smbfs_mkdir;
72 static vop_rmdir_t smbfs_rmdir;
73 static vop_symlink_t smbfs_symlink;
74 static vop_readdir_t smbfs_readdir;
75 static vop_strategy_t smbfs_strategy;
76 static vop_print_t smbfs_print;
77 static vop_pathconf_t smbfs_pathconf;
78 static vop_advlock_t smbfs_advlock;
79 static vop_getextattr_t smbfs_getextattr;
80
81 struct vop_vector smbfs_vnodeops = {
82 .vop_default = &default_vnodeops,
83
84 .vop_access = smbfs_access,
85 .vop_advlock = smbfs_advlock,
86 .vop_close = smbfs_close,
87 .vop_create = smbfs_create,
88 .vop_fsync = smbfs_fsync,
89 .vop_getattr = smbfs_getattr,
90 .vop_getextattr = smbfs_getextattr,
91 .vop_getpages = smbfs_getpages,
92 .vop_inactive = smbfs_inactive,
93 .vop_ioctl = smbfs_ioctl,
94 .vop_link = smbfs_link,
95 .vop_lookup = smbfs_lookup,
96 .vop_mkdir = smbfs_mkdir,
97 .vop_mknod = smbfs_mknod,
98 .vop_open = smbfs_open,
99 .vop_pathconf = smbfs_pathconf,
100 .vop_print = smbfs_print,
101 .vop_putpages = smbfs_putpages,
102 .vop_read = smbfs_read,
103 .vop_readdir = smbfs_readdir,
104 .vop_reclaim = smbfs_reclaim,
105 .vop_remove = smbfs_remove,
106 .vop_rename = smbfs_rename,
107 .vop_rmdir = smbfs_rmdir,
108 .vop_setattr = smbfs_setattr,
109 /* .vop_setextattr = smbfs_setextattr,*/
110 .vop_strategy = smbfs_strategy,
111 .vop_symlink = smbfs_symlink,
112 .vop_write = smbfs_write,
113 };
114 VFS_VOP_VECTOR_REGISTER(smbfs_vnodeops);
115
116 static int
smbfs_access(struct vop_access_args * ap)117 smbfs_access(struct vop_access_args *ap)
118 {
119 struct vnode *vp = ap->a_vp;
120 accmode_t accmode = ap->a_accmode;
121 mode_t mpmode;
122 struct smbmount *smp = VTOSMBFS(vp);
123
124 SMBVDEBUG("\n");
125 if ((accmode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
126 switch (vp->v_type) {
127 case VREG: case VDIR: case VLNK:
128 return EROFS;
129 default:
130 break;
131 }
132 }
133 mpmode = vp->v_type == VREG ? smp->sm_file_mode : smp->sm_dir_mode;
134 return (vaccess(vp->v_type, mpmode, smp->sm_uid,
135 smp->sm_gid, ap->a_accmode, ap->a_cred));
136 }
137
138 /* ARGSUSED */
139 static int
smbfs_open(struct vop_open_args * ap)140 smbfs_open(struct vop_open_args *ap)
141 {
142 struct vnode *vp = ap->a_vp;
143 struct smbnode *np = VTOSMB(vp);
144 struct smb_cred *scred;
145 struct vattr vattr;
146 int mode = ap->a_mode;
147 int error, accmode;
148
149 SMBVDEBUG("%s,%d\n", np->n_name, (np->n_flag & NOPEN) != 0);
150 if (vp->v_type != VREG && vp->v_type != VDIR) {
151 SMBFSERR("open eacces vtype=%d\n", vp->v_type);
152 return EACCES;
153 }
154 if (vp->v_type == VDIR) {
155 np->n_flag |= NOPEN;
156 return 0;
157 }
158 if (np->n_flag & NMODIFIED) {
159 if ((error = smbfs_vinvalbuf(vp, ap->a_td)) == EINTR)
160 return error;
161 smbfs_attr_cacheremove(vp);
162 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
163 if (error)
164 return error;
165 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
166 } else {
167 error = VOP_GETATTR(vp, &vattr, ap->a_cred);
168 if (error)
169 return error;
170 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
171 error = smbfs_vinvalbuf(vp, ap->a_td);
172 if (error == EINTR)
173 return error;
174 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
175 }
176 }
177 if ((np->n_flag & NOPEN) != 0)
178 return 0;
179 /*
180 * Use DENYNONE to give unixy semantics of permitting
181 * everything not forbidden by permissions. Ie denial
182 * is up to server with clients/openers needing to use
183 * advisory locks for further control.
184 */
185 accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
186 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
187 accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
188 scred = smbfs_malloc_scred();
189 smb_makescred(scred, ap->a_td, ap->a_cred);
190 error = smbfs_smb_open(np, accmode, scred);
191 if (error) {
192 if (mode & FWRITE)
193 return EACCES;
194 else if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
195 accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
196 error = smbfs_smb_open(np, accmode, scred);
197 }
198 }
199 if (error == 0) {
200 np->n_flag |= NOPEN;
201 vnode_create_vobject(ap->a_vp, vattr.va_size, ap->a_td);
202 }
203 smbfs_attr_cacheremove(vp);
204 smbfs_free_scred(scred);
205 return error;
206 }
207
208 static int
smbfs_close(struct vop_close_args * ap)209 smbfs_close(struct vop_close_args *ap)
210 {
211 struct vnode *vp = ap->a_vp;
212 struct thread *td = ap->a_td;
213 struct smbnode *np = VTOSMB(vp);
214 struct smb_cred *scred;
215
216 if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0 &&
217 np->n_dirseq != NULL) {
218 scred = smbfs_malloc_scred();
219 smb_makescred(scred, td, ap->a_cred);
220 smbfs_findclose(np->n_dirseq, scred);
221 smbfs_free_scred(scred);
222 np->n_dirseq = NULL;
223 }
224 return 0;
225 }
226
227 /*
228 * smbfs_getattr call from vfs.
229 */
230 static int
smbfs_getattr(struct vop_getattr_args * ap)231 smbfs_getattr(struct vop_getattr_args *ap)
232 {
233 struct vnode *vp = ap->a_vp;
234 struct smbnode *np = VTOSMB(vp);
235 struct vattr *va=ap->a_vap;
236 struct smbfattr fattr;
237 struct smb_cred *scred;
238 u_quad_t oldsize;
239 int error;
240
241 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_vflag & VV_ROOT) != 0);
242 error = smbfs_attr_cachelookup(vp, va);
243 if (!error)
244 return 0;
245 SMBVDEBUG("not in the cache\n");
246 scred = smbfs_malloc_scred();
247 smb_makescred(scred, curthread, ap->a_cred);
248 oldsize = np->n_size;
249 error = smbfs_smb_lookup(np, NULL, 0, &fattr, scred);
250 if (error) {
251 SMBVDEBUG("error %d\n", error);
252 smbfs_free_scred(scred);
253 return error;
254 }
255 smbfs_attr_cacheenter(vp, &fattr);
256 smbfs_attr_cachelookup(vp, va);
257 if (np->n_flag & NOPEN)
258 np->n_size = oldsize;
259 smbfs_free_scred(scred);
260 return 0;
261 }
262
263 static int
smbfs_setattr(struct vop_setattr_args * ap)264 smbfs_setattr(struct vop_setattr_args *ap)
265 {
266 struct vnode *vp = ap->a_vp;
267 struct smbnode *np = VTOSMB(vp);
268 struct vattr *vap = ap->a_vap;
269 struct timespec *mtime, *atime;
270 struct smb_cred *scred;
271 struct smb_share *ssp = np->n_mount->sm_share;
272 struct smb_vc *vcp = SSTOVC(ssp);
273 struct thread *td = curthread;
274 u_quad_t tsize = 0;
275 int isreadonly, doclose, error = 0;
276 int old_n_dosattr;
277
278 SMBVDEBUG("\n");
279 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
280 /*
281 * Disallow write attempts if the filesystem is mounted read-only.
282 */
283 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
284 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
285 vap->va_mode != (mode_t)VNOVAL || vap->va_flags != VNOVAL) &&
286 isreadonly)
287 return EROFS;
288
289 /*
290 * We only support setting four flags. Don't allow setting others.
291 *
292 * We map UF_READONLY to SMB_FA_RDONLY, unlike the MacOS X version
293 * of this code, which maps both UF_IMMUTABLE AND SF_IMMUTABLE to
294 * SMB_FA_RDONLY. The immutable flags have different semantics
295 * than readonly, which is the reason for the difference.
296 */
297 if (vap->va_flags != VNOVAL) {
298 if (vap->va_flags & ~(UF_HIDDEN|UF_SYSTEM|UF_ARCHIVE|
299 UF_READONLY))
300 return EINVAL;
301 }
302
303 scred = smbfs_malloc_scred();
304 smb_makescred(scred, td, ap->a_cred);
305 if (vap->va_size != VNOVAL) {
306 switch (vp->v_type) {
307 case VDIR:
308 error = EISDIR;
309 goto out;
310 case VREG:
311 break;
312 default:
313 error = EINVAL;
314 goto out;
315 }
316 if (isreadonly) {
317 error = EROFS;
318 goto out;
319 }
320 doclose = 0;
321 vnode_pager_setsize(vp, (u_long)vap->va_size);
322 tsize = np->n_size;
323 np->n_size = vap->va_size;
324 if ((np->n_flag & NOPEN) == 0) {
325 error = smbfs_smb_open(np,
326 SMB_SM_DENYNONE|SMB_AM_OPENRW,
327 scred);
328 if (error == 0)
329 doclose = 1;
330 }
331 if (error == 0)
332 error = smbfs_smb_setfsize(np,
333 (int64_t)vap->va_size, scred);
334 if (doclose)
335 smbfs_smb_close(ssp, np->n_fid, NULL, scred);
336 if (error) {
337 np->n_size = tsize;
338 vnode_pager_setsize(vp, (u_long)tsize);
339 goto out;
340 }
341 }
342 if ((vap->va_flags != VNOVAL) || (vap->va_mode != (mode_t)VNOVAL)) {
343 old_n_dosattr = np->n_dosattr;
344
345 if (vap->va_mode != (mode_t)VNOVAL) {
346 if (vap->va_mode & S_IWUSR)
347 np->n_dosattr &= ~SMB_FA_RDONLY;
348 else
349 np->n_dosattr |= SMB_FA_RDONLY;
350 }
351
352 if (vap->va_flags != VNOVAL) {
353 if (vap->va_flags & UF_HIDDEN)
354 np->n_dosattr |= SMB_FA_HIDDEN;
355 else
356 np->n_dosattr &= ~SMB_FA_HIDDEN;
357
358 if (vap->va_flags & UF_SYSTEM)
359 np->n_dosattr |= SMB_FA_SYSTEM;
360 else
361 np->n_dosattr &= ~SMB_FA_SYSTEM;
362
363 if (vap->va_flags & UF_ARCHIVE)
364 np->n_dosattr |= SMB_FA_ARCHIVE;
365 else
366 np->n_dosattr &= ~SMB_FA_ARCHIVE;
367
368 /*
369 * We only support setting the immutable / readonly
370 * bit for regular files. According to comments in
371 * the MacOS X version of this code, supporting the
372 * readonly bit on directories doesn't do the same
373 * thing in Windows as in Unix.
374 */
375 if (vp->v_type == VREG) {
376 if (vap->va_flags & UF_READONLY)
377 np->n_dosattr |= SMB_FA_RDONLY;
378 else
379 np->n_dosattr &= ~SMB_FA_RDONLY;
380 }
381 }
382
383 if (np->n_dosattr != old_n_dosattr) {
384 error = smbfs_smb_setpattr(np, np->n_dosattr, NULL, scred);
385 if (error)
386 goto out;
387 }
388 }
389 mtime = atime = NULL;
390 if (vap->va_mtime.tv_sec != VNOVAL)
391 mtime = &vap->va_mtime;
392 if (vap->va_atime.tv_sec != VNOVAL)
393 atime = &vap->va_atime;
394 if (mtime != atime) {
395 if (vap->va_vaflags & VA_UTIMES_NULL) {
396 error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
397 if (error)
398 error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td);
399 } else
400 error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td);
401 #if 0
402 if (mtime == NULL)
403 mtime = &np->n_mtime;
404 if (atime == NULL)
405 atime = &np->n_atime;
406 #endif
407 /*
408 * If file is opened, then we can use handle based calls.
409 * If not, use path based ones.
410 */
411 if ((np->n_flag & NOPEN) == 0) {
412 if (vcp->vc_flags & SMBV_WIN95) {
413 error = VOP_OPEN(vp, FWRITE, ap->a_cred, td,
414 NULL);
415 if (!error) {
416 /* error = smbfs_smb_setfattrNT(np, 0,
417 mtime, atime, scred);
418 VOP_GETATTR(vp, &vattr, ap->a_cred); */
419 if (mtime)
420 np->n_mtime = *mtime;
421 VOP_CLOSE(vp, FWRITE, ap->a_cred, td);
422 }
423 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) {
424 error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
425 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, scred);*/
426 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
427 error = smbfs_smb_setptime2(np, mtime, atime, 0, scred);
428 } else {
429 error = smbfs_smb_setpattr(np, 0, mtime, scred);
430 }
431 } else {
432 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) {
433 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, scred);
434 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
435 error = smbfs_smb_setftime(np, mtime, atime, scred);
436 } else {
437 /*
438 * I have no idea how to handle this for core
439 * level servers. The possible solution is to
440 * update mtime after file is closed.
441 */
442 SMBERROR("can't update times on an opened file\n");
443 }
444 }
445 }
446 /*
447 * Invalidate attribute cache in case if server doesn't set
448 * required attributes.
449 */
450 smbfs_attr_cacheremove(vp); /* invalidate cache */
451 VOP_GETATTR(vp, vap, ap->a_cred);
452 np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
453 out:
454 smbfs_free_scred(scred);
455 return error;
456 }
457 /*
458 * smbfs_read call.
459 */
460 static int
smbfs_read(struct vop_read_args * ap)461 smbfs_read(struct vop_read_args *ap)
462 {
463 struct vnode *vp = ap->a_vp;
464 struct uio *uio = ap->a_uio;
465
466 SMBVDEBUG("\n");
467 if (vp->v_type != VREG && vp->v_type != VDIR)
468 return EPERM;
469 return smbfs_readvnode(vp, uio, ap->a_cred, NULL);
470 }
471
472 static int
smbfs_write(struct vop_write_args * ap)473 smbfs_write(struct vop_write_args *ap)
474 {
475 struct vnode *vp = ap->a_vp;
476 struct uio *uio = ap->a_uio;
477
478 SMBVDEBUG("%d,ofs=%jd,sz=%zd\n",vp->v_type, (intmax_t)uio->uio_offset,
479 uio->uio_resid);
480 if (vp->v_type != VREG)
481 return (EPERM);
482 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag);
483 }
484 /*
485 * smbfs_create call
486 * Create a regular file. On entry the directory to contain the file being
487 * created is locked. We must release before we return. We must also free
488 * the pathname buffer pointed at by cnp->cn_pnbuf, always on error.
489 */
490 static int
smbfs_create(struct vop_create_args * ap)491 smbfs_create(struct vop_create_args *ap)
492 {
493 struct vnode *dvp = ap->a_dvp;
494 struct vattr *vap = ap->a_vap;
495 struct vnode **vpp=ap->a_vpp;
496 struct componentname *cnp = ap->a_cnp;
497 struct smbnode *dnp = VTOSMB(dvp);
498 struct vnode *vp;
499 struct vattr vattr;
500 struct smbfattr fattr;
501 struct smb_cred *scred;
502 char *name = cnp->cn_nameptr;
503 int nmlen = cnp->cn_namelen;
504 int error;
505
506 SMBVDEBUG("\n");
507 *vpp = NULL;
508 if (vap->va_type != VREG)
509 return EOPNOTSUPP;
510 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)))
511 return error;
512 scred = smbfs_malloc_scred();
513 smb_makescred(scred, curthread, cnp->cn_cred);
514
515 error = smbfs_smb_create(dnp, name, nmlen, scred);
516 if (error)
517 goto out;
518 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, scred);
519 if (error)
520 goto out;
521 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp);
522 if (error)
523 goto out;
524 *vpp = vp;
525 if (cnp->cn_flags & MAKEENTRY)
526 cache_enter(dvp, vp, cnp);
527 out:
528 smbfs_free_scred(scred);
529 return error;
530 }
531
532 static int
smbfs_remove(struct vop_remove_args * ap)533 smbfs_remove(struct vop_remove_args *ap)
534 {
535 struct vnode *vp = ap->a_vp;
536 /* struct vnode *dvp = ap->a_dvp;*/
537 struct componentname *cnp = ap->a_cnp;
538 struct smbnode *np = VTOSMB(vp);
539 struct smb_cred *scred;
540 int error;
541
542 if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 || vrefcnt(vp) != 1)
543 return EPERM;
544 scred = smbfs_malloc_scred();
545 smb_makescred(scred, curthread, cnp->cn_cred);
546 error = smbfs_smb_delete(np, scred);
547 if (error == 0)
548 np->n_flag |= NGONE;
549 cache_purge(vp);
550 smbfs_free_scred(scred);
551 return error;
552 }
553
554 /*
555 * smbfs_file rename call
556 */
557 static int
smbfs_rename(struct vop_rename_args * ap)558 smbfs_rename(struct vop_rename_args *ap)
559 {
560 struct vnode *fvp = ap->a_fvp;
561 struct vnode *tvp = ap->a_tvp;
562 struct vnode *fdvp = ap->a_fdvp;
563 struct vnode *tdvp = ap->a_tdvp;
564 struct componentname *tcnp = ap->a_tcnp;
565 /* struct componentname *fcnp = ap->a_fcnp;*/
566 struct smb_cred *scred;
567 #ifdef notnow
568 u_int16_t flags = 6;
569 #endif
570 int error=0;
571
572 scred = NULL;
573 /* Check for cross-device rename */
574 if ((fvp->v_mount != tdvp->v_mount) ||
575 (tvp && (fvp->v_mount != tvp->v_mount))) {
576 error = EXDEV;
577 goto out;
578 }
579
580 if (ap->a_flags != 0) {
581 error = EOPNOTSUPP;
582 goto out;
583 }
584
585 if (tvp && vrefcnt(tvp) > 1) {
586 error = EBUSY;
587 goto out;
588 }
589 #ifdef notnow
590 flags = 0x10; /* verify all writes */
591 #endif
592 if (fvp->v_type == VDIR) {
593 #ifdef notnow
594 flags |= 2;
595 #endif
596 } else if (fvp->v_type == VREG) {
597 #ifdef notnow
598 flags |= 1;
599 #endif
600 } else {
601 return EINVAL;
602 }
603 scred = smbfs_malloc_scred();
604 smb_makescred(scred, curthread, 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
smbfs_link(struct vop_link_args * ap)659 smbfs_link(struct vop_link_args *ap)
660 {
661 return EOPNOTSUPP;
662 }
663
664 /*
665 * smbfs_symlink link create call.
666 * Sometime it will be functional...
667 */
668 static int
smbfs_symlink(struct vop_symlink_args * ap)669 smbfs_symlink(struct vop_symlink_args *ap)
670 {
671 return EOPNOTSUPP;
672 }
673
674 static int
smbfs_mknod(struct vop_mknod_args * ap)675 smbfs_mknod(struct vop_mknod_args *ap)
676 {
677 return EOPNOTSUPP;
678 }
679
680 static int
smbfs_mkdir(struct vop_mkdir_args * ap)681 smbfs_mkdir(struct vop_mkdir_args *ap)
682 {
683 struct vnode *dvp = ap->a_dvp;
684 /* struct vattr *vap = ap->a_vap;*/
685 struct vnode *vp;
686 struct componentname *cnp = ap->a_cnp;
687 struct smbnode *dnp = VTOSMB(dvp);
688 struct vattr vattr;
689 struct smb_cred *scred;
690 struct smbfattr fattr;
691 char *name = cnp->cn_nameptr;
692 int len = cnp->cn_namelen;
693 int error;
694
695 if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred))) {
696 return error;
697 }
698 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.'))))
699 return EEXIST;
700 scred = smbfs_malloc_scred();
701 smb_makescred(scred, curthread, cnp->cn_cred);
702 error = smbfs_smb_mkdir(dnp, name, len, scred);
703 if (error)
704 goto out;
705 error = smbfs_smb_lookup(dnp, name, len, &fattr, scred);
706 if (error)
707 goto out;
708 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
709 if (error)
710 goto out;
711 *ap->a_vpp = vp;
712 out:
713 smbfs_free_scred(scred);
714 return error;
715 }
716
717 /*
718 * smbfs_remove directory call
719 */
720 static int
smbfs_rmdir(struct vop_rmdir_args * ap)721 smbfs_rmdir(struct vop_rmdir_args *ap)
722 {
723 struct vnode *vp = ap->a_vp;
724 struct vnode *dvp = ap->a_dvp;
725 struct componentname *cnp = ap->a_cnp;
726 /* struct smbmount *smp = VTOSMBFS(vp);*/
727 struct smbnode *dnp = VTOSMB(dvp);
728 struct smbnode *np = VTOSMB(vp);
729 struct smb_cred *scred;
730 int error;
731
732 if (dvp == vp)
733 return EINVAL;
734
735 scred = smbfs_malloc_scred();
736 smb_makescred(scred, curthread, cnp->cn_cred);
737 error = smbfs_smb_rmdir(np, scred);
738 if (error == 0)
739 np->n_flag |= NGONE;
740 dnp->n_flag |= NMODIFIED;
741 smbfs_attr_cacheremove(dvp);
742 /* cache_purge(dvp);*/
743 cache_purge(vp);
744 smbfs_free_scred(scred);
745 return error;
746 }
747
748 /*
749 * smbfs_readdir call
750 */
751 static int
smbfs_readdir(struct vop_readdir_args * ap)752 smbfs_readdir(struct vop_readdir_args *ap)
753 {
754 struct vnode *vp = ap->a_vp;
755 struct uio *uio = ap->a_uio;
756
757 if (vp->v_type != VDIR)
758 return (EPERM);
759 #ifdef notnow
760 if (ap->a_ncookies) {
761 printf("smbfs_readdir: no support for cookies now...");
762 return (EOPNOTSUPP);
763 }
764 #endif
765 return (smbfs_readvnode(vp, uio, ap->a_cred, ap->a_eofflag));
766 }
767
768 /* ARGSUSED */
769 static int
smbfs_fsync(struct vop_fsync_args * ap)770 smbfs_fsync(struct vop_fsync_args *ap)
771 {
772 /* return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));*/
773 return (0);
774 }
775
776 static
smbfs_print(struct vop_print_args * ap)777 int smbfs_print(struct vop_print_args *ap)
778 {
779 struct vnode *vp = ap->a_vp;
780 struct smbnode *np = VTOSMB(vp);
781
782 if (np == NULL) {
783 printf("no smbnode data\n");
784 return (0);
785 }
786 printf("\tname = %s, parent = %p, open = %d\n", np->n_name,
787 np->n_parent ? np->n_parent : NULL, (np->n_flag & NOPEN) != 0);
788 return (0);
789 }
790
791 static int
smbfs_pathconf(struct vop_pathconf_args * ap)792 smbfs_pathconf(struct vop_pathconf_args *ap)
793 {
794 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp));
795 struct smb_vc *vcp = SSTOVC(smp->sm_share);
796 long *retval = ap->a_retval;
797 int error = 0;
798
799 switch (ap->a_name) {
800 case _PC_FILESIZEBITS:
801 if (vcp->vc_sopt.sv_caps & (SMB_CAP_LARGE_READX |
802 SMB_CAP_LARGE_WRITEX))
803 *retval = 64;
804 else
805 *retval = 32;
806 break;
807 case _PC_NAME_MAX:
808 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12;
809 break;
810 case _PC_PATH_MAX:
811 *retval = 800; /* XXX: a correct one ? */
812 break;
813 case _PC_NO_TRUNC:
814 *retval = 1;
815 break;
816 case _PC_HAS_HIDDENSYSTEM:
817 *retval = 1;
818 break;
819 default:
820 error = vop_stdpathconf(ap);
821 }
822 return error;
823 }
824
825 static int
smbfs_strategy(struct vop_strategy_args * ap)826 smbfs_strategy(struct vop_strategy_args *ap)
827 {
828 struct buf *bp=ap->a_bp;
829 struct ucred *cr;
830 struct thread *td;
831
832 SMBVDEBUG("\n");
833 if (bp->b_flags & B_ASYNC)
834 td = (struct thread *)0;
835 else
836 td = curthread; /* XXX */
837 if (bp->b_iocmd == BIO_READ)
838 cr = bp->b_rcred;
839 else
840 cr = bp->b_wcred;
841
842 if ((bp->b_flags & B_ASYNC) == 0 )
843 (void)smbfs_doio(ap->a_vp, bp, cr, td);
844 return (0);
845 }
846
847 int
smbfs_ioctl(struct vop_ioctl_args * ap)848 smbfs_ioctl(struct vop_ioctl_args *ap)
849 {
850 return ENOTTY;
851 }
852
853 static char smbfs_atl[] = "rhsvda";
854 static int
smbfs_getextattr(struct vop_getextattr_args * ap)855 smbfs_getextattr(struct vop_getextattr_args *ap)
856 /* {
857 IN struct vnode *a_vp;
858 IN char *a_name;
859 INOUT struct uio *a_uio;
860 IN struct ucred *a_cred;
861 IN struct thread *a_td;
862 };
863 */
864 {
865 struct vnode *vp = ap->a_vp;
866 struct thread *td = ap->a_td;
867 struct ucred *cred = ap->a_cred;
868 struct uio *uio = ap->a_uio;
869 const char *name = ap->a_name;
870 struct smbnode *np = VTOSMB(vp);
871 struct vattr vattr;
872 char buf[10];
873 int i, attr, error;
874
875 error = VOP_ACCESS(vp, VREAD, cred, td);
876 if (error)
877 return error;
878 error = VOP_GETATTR(vp, &vattr, cred);
879 if (error)
880 return error;
881 if (strcmp(name, "dosattr") == 0) {
882 attr = np->n_dosattr;
883 for (i = 0; i < 6; i++, attr >>= 1)
884 buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
885 buf[i] = 0;
886 error = uiomove(buf, i, uio);
887 } else
888 error = EINVAL;
889 return error;
890 }
891
892 /*
893 * Since we expected to support F_GETLK (and SMB protocol has no such function),
894 * it is necessary to use lf_advlock(). It would be nice if this function had
895 * a callback mechanism because it will help to improve a level of consistency.
896 */
897 int
smbfs_advlock(struct vop_advlock_args * ap)898 smbfs_advlock(struct vop_advlock_args *ap)
899 {
900 struct vnode *vp = ap->a_vp;
901 struct smbnode *np = VTOSMB(vp);
902 struct flock *fl = ap->a_fl;
903 caddr_t id = (caddr_t)1 /* ap->a_id */;
904 /* int flags = ap->a_flags;*/
905 struct thread *td = curthread;
906 struct smb_cred *scred;
907 u_quad_t size;
908 off_t start, end, oadd;
909 int error, lkop;
910
911 if (vp->v_type == VDIR) {
912 /*
913 * SMB protocol have no support for directory locking.
914 * Although locks can be processed on local machine, I don't
915 * think that this is a good idea, because some programs
916 * can work wrong assuming directory is locked. So, we just
917 * return 'operation not supported
918 */
919 return EOPNOTSUPP;
920 }
921 size = np->n_size;
922 switch (fl->l_whence) {
923 case SEEK_SET:
924 case SEEK_CUR:
925 start = fl->l_start;
926 break;
927
928 case SEEK_END:
929 if (size > OFF_MAX ||
930 (fl->l_start > 0 && size > OFF_MAX - fl->l_start))
931 return EOVERFLOW;
932 start = size + fl->l_start;
933 break;
934
935 default:
936 return EINVAL;
937 }
938 if (start < 0)
939 return EINVAL;
940 if (fl->l_len < 0) {
941 if (start == 0)
942 return EINVAL;
943 end = start - 1;
944 start += fl->l_len;
945 if (start < 0)
946 return EINVAL;
947 } else if (fl->l_len == 0)
948 end = -1;
949 else {
950 oadd = fl->l_len - 1;
951 if (oadd > OFF_MAX - start)
952 return EOVERFLOW;
953 end = start + oadd;
954 }
955 scred = smbfs_malloc_scred();
956 smb_makescred(scred, td, td->td_ucred);
957 switch (ap->a_op) {
958 case F_SETLK:
959 switch (fl->l_type) {
960 case F_WRLCK:
961 lkop = SMB_LOCK_EXCL;
962 break;
963 case F_RDLCK:
964 lkop = SMB_LOCK_SHARED;
965 break;
966 case F_UNLCK:
967 lkop = SMB_LOCK_RELEASE;
968 break;
969 default:
970 smbfs_free_scred(scred);
971 return EINVAL;
972 }
973 error = lf_advlock(ap, &vp->v_lockf, size);
974 if (error)
975 break;
976 lkop = SMB_LOCK_EXCL;
977 error = smbfs_smb_lock(np, lkop, id, start, end, scred);
978 if (error) {
979 int oldtype = fl->l_type;
980 fl->l_type = F_UNLCK;
981 ap->a_op = F_UNLCK;
982 lf_advlock(ap, &vp->v_lockf, size);
983 fl->l_type = oldtype;
984 }
985 break;
986 case F_UNLCK:
987 lf_advlock(ap, &vp->v_lockf, size);
988 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, scred);
989 break;
990 case F_GETLK:
991 error = lf_advlock(ap, &vp->v_lockf, size);
992 break;
993 default:
994 smbfs_free_scred(scred);
995 return EINVAL;
996 }
997 smbfs_free_scred(scred);
998 return error;
999 }
1000
1001 static int
smbfs_pathcheck(struct smbmount * smp,const char * name,int nmlen,int nameiop)1002 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop)
1003 {
1004 static const char *badchars = "*/:<>?";
1005 static const char *badchars83 = " +|,[]=;";
1006 const char *cp;
1007 int i, error;
1008
1009 /*
1010 * Backslash characters, being a path delimiter, are prohibited
1011 * within a path component even for LOOKUP operations.
1012 */
1013 if (strchr(name, '\\') != NULL)
1014 return ENOENT;
1015
1016 if (nameiop == LOOKUP)
1017 return 0;
1018 error = ENOENT;
1019 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
1020 /*
1021 * Name should conform 8.3 format
1022 */
1023 if (nmlen > 12)
1024 return ENAMETOOLONG;
1025 cp = strchr(name, '.');
1026 if (cp == NULL)
1027 return error;
1028 if (cp == name || (cp - name) > 8)
1029 return error;
1030 cp = strchr(cp + 1, '.');
1031 if (cp != NULL)
1032 return error;
1033 for (cp = name, i = 0; i < nmlen; i++, cp++)
1034 if (strchr(badchars83, *cp) != NULL)
1035 return error;
1036 }
1037 for (cp = name, i = 0; i < nmlen; i++, cp++)
1038 if (strchr(badchars, *cp) != NULL)
1039 return error;
1040 return 0;
1041 }
1042
1043 /*
1044 * Things go even weird without fixed inode numbers...
1045 */
1046 int
smbfs_lookup(struct vop_lookup_args * ap)1047 smbfs_lookup(struct vop_lookup_args *ap)
1048 {
1049 struct componentname *cnp = ap->a_cnp;
1050 struct thread *td = curthread;
1051 struct vnode *dvp = ap->a_dvp;
1052 struct vnode **vpp = ap->a_vpp;
1053 struct vnode *vp;
1054 struct smbmount *smp;
1055 struct mount *mp = dvp->v_mount;
1056 struct smbnode *dnp;
1057 struct smbfattr fattr, *fap;
1058 struct smb_cred *scred;
1059 char *name = cnp->cn_nameptr;
1060 uint64_t flags = cnp->cn_flags;
1061 int nameiop = cnp->cn_nameiop;
1062 int nmlen = cnp->cn_namelen;
1063 int error, islastcn, isdot;
1064 int killit;
1065
1066 SMBVDEBUG("\n");
1067 if (dvp->v_type != VDIR)
1068 return ENOTDIR;
1069 if ((flags & ISDOTDOT) && (dvp->v_vflag & VV_ROOT)) {
1070 SMBFSERR("invalid '..'\n");
1071 return EIO;
1072 }
1073 islastcn = flags & ISLASTCN;
1074 if (islastcn && (mp->mnt_flag & MNT_RDONLY) && (nameiop != LOOKUP))
1075 return EROFS;
1076 error = vn_dir_check_exec(dvp, cnp);
1077 if (error != 0)
1078 return error;
1079 smp = VFSTOSMBFS(mp);
1080 dnp = VTOSMB(dvp);
1081 isdot = (nmlen == 1 && name[0] == '.');
1082
1083 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop);
1084
1085 if (error)
1086 return ENOENT;
1087
1088 error = cache_lookup(dvp, vpp, cnp, NULL, NULL);
1089 SMBVDEBUG("cache_lookup returned %d\n", error);
1090 if (error > 0)
1091 return error;
1092 if (error) { /* name was found */
1093 struct vattr vattr;
1094
1095 killit = 0;
1096 vp = *vpp;
1097 error = VOP_GETATTR(vp, &vattr, cnp->cn_cred);
1098 /*
1099 * If the file type on the server is inconsistent
1100 * with what it was when we created the vnode,
1101 * kill the bogus vnode now and fall through to
1102 * the code below to create a new one with the
1103 * right type.
1104 */
1105 if (error == 0 &&
1106 ((vp->v_type == VDIR &&
1107 (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) == 0) ||
1108 (vp->v_type == VREG &&
1109 (VTOSMB(vp)->n_dosattr & SMB_FA_DIR) != 0)))
1110 killit = 1;
1111 else if (error == 0
1112 /* && vattr.va_ctime.tv_sec == VTOSMB(vp)->n_ctime*/) {
1113 SMBVDEBUG("use cached vnode\n");
1114 return (0);
1115 }
1116 cache_purge(vp);
1117 /*
1118 * XXX This is not quite right, if '.' is
1119 * inconsistent, we really need to start the lookup
1120 * all over again. Hopefully there is some other
1121 * guarantee that prevents this case from happening.
1122 */
1123 if (killit && vp != dvp)
1124 vgone(vp);
1125 if (vp != dvp)
1126 vput(vp);
1127 else
1128 vrele(vp);
1129 *vpp = NULL;
1130 }
1131 /*
1132 * entry is not in the cache or has been expired
1133 */
1134 error = 0;
1135 *vpp = NULL;
1136 scred = smbfs_malloc_scred();
1137 smb_makescred(scred, td, cnp->cn_cred);
1138 fap = &fattr;
1139 if (flags & ISDOTDOT) {
1140 /*
1141 * In the DOTDOT case, don't go over-the-wire
1142 * in order to request attributes. We already
1143 * know it's a directory and subsequent call to
1144 * smbfs_getattr() will restore consistency.
1145 *
1146 */
1147 SMBVDEBUG("smbfs_smb_lookup: dotdot\n");
1148 } else if (isdot) {
1149 error = smbfs_smb_lookup(dnp, NULL, 0, fap, scred);
1150 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1151 }
1152 else {
1153 error = smbfs_smb_lookup(dnp, name, nmlen, fap, scred);
1154 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error);
1155 }
1156 if (error && error != ENOENT)
1157 goto out;
1158 if (error) { /* entry not found */
1159 /*
1160 * Handle RENAME or CREATE case...
1161 */
1162 if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
1163 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1164 if (error)
1165 goto out;
1166 error = EJUSTRETURN;
1167 goto out;
1168 }
1169 error = ENOENT;
1170 goto out;
1171 }/* else {
1172 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum);
1173 }*/
1174 /*
1175 * handle DELETE case ...
1176 */
1177 if (nameiop == DELETE && islastcn) { /* delete last component */
1178 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1179 if (error)
1180 goto out;
1181 if (isdot) {
1182 vref(dvp);
1183 *vpp = dvp;
1184 goto out;
1185 }
1186 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1187 if (error)
1188 goto out;
1189 *vpp = vp;
1190 goto out;
1191 }
1192 if (nameiop == RENAME && islastcn) {
1193 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
1194 if (error)
1195 goto out;
1196 if (isdot) {
1197 error = EISDIR;
1198 goto out;
1199 }
1200 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1201 if (error)
1202 goto out;
1203 *vpp = vp;
1204 goto out;
1205 }
1206 if (flags & ISDOTDOT) {
1207 mp = dvp->v_mount;
1208 error = vfs_busy(mp, MBF_NOWAIT);
1209 if (error != 0) {
1210 vfs_ref(mp);
1211 VOP_UNLOCK(dvp);
1212 error = vfs_busy(mp, 0);
1213 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1214 vfs_rel(mp);
1215 if (error) {
1216 error = ENOENT;
1217 goto out;
1218 }
1219 if (VN_IS_DOOMED(dvp)) {
1220 vfs_unbusy(mp);
1221 error = ENOENT;
1222 goto out;
1223 }
1224 }
1225 VOP_UNLOCK(dvp);
1226 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp);
1227 vfs_unbusy(mp);
1228 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1229 if (VN_IS_DOOMED(dvp)) {
1230 if (error == 0)
1231 vput(vp);
1232 error = ENOENT;
1233 }
1234 if (error)
1235 goto out;
1236 *vpp = vp;
1237 } else if (isdot) {
1238 vref(dvp);
1239 *vpp = dvp;
1240 } else {
1241 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp);
1242 if (error)
1243 goto out;
1244 *vpp = vp;
1245 SMBVDEBUG("lookup: getnewvp!\n");
1246 }
1247 if ((cnp->cn_flags & MAKEENTRY)/* && !islastcn*/) {
1248 /* VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_vattr.va_ctime.tv_sec;*/
1249 cache_enter(dvp, *vpp, cnp);
1250 }
1251 out:
1252 smbfs_free_scred(scred);
1253 return (error);
1254 }
1255