1 | /* $NetBSD: smbfs_vnops.c,v 1.93 2014/12/21 10:48:53 hannken Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2003 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Jaromir Dolecek. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | /* |
33 | * Copyright (c) 2000-2001 Boris Popov |
34 | * All rights reserved. |
35 | * |
36 | * Redistribution and use in source and binary forms, with or without |
37 | * modification, are permitted provided that the following conditions |
38 | * are met: |
39 | * 1. Redistributions of source code must retain the above copyright |
40 | * notice, this list of conditions and the following disclaimer. |
41 | * 2. Redistributions in binary form must reproduce the above copyright |
42 | * notice, this list of conditions and the following disclaimer in the |
43 | * documentation and/or other materials provided with the distribution. |
44 | * 3. All advertising materials mentioning features or use of this software |
45 | * must display the following acknowledgement: |
46 | * This product includes software developed by Boris Popov. |
47 | * 4. Neither the name of the author nor the names of any co-contributors |
48 | * may be used to endorse or promote products derived from this software |
49 | * without specific prior written permission. |
50 | * |
51 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
52 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
53 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
54 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
55 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
56 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
57 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
58 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
59 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
60 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
61 | * SUCH DAMAGE. |
62 | * |
63 | * FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.15 2001/12/20 15:56:45 bp Exp |
64 | */ |
65 | |
66 | #include <sys/cdefs.h> |
67 | __KERNEL_RCSID(0, "$NetBSD: smbfs_vnops.c,v 1.93 2014/12/21 10:48:53 hannken Exp $" ); |
68 | |
69 | #include <sys/param.h> |
70 | #include <sys/systm.h> |
71 | #include <sys/namei.h> |
72 | #include <sys/kernel.h> |
73 | #include <sys/proc.h> |
74 | #include <sys/buf.h> |
75 | #include <sys/fcntl.h> |
76 | #include <sys/mount.h> |
77 | #include <sys/unistd.h> |
78 | #include <sys/vnode.h> |
79 | #include <sys/lockf.h> |
80 | #include <sys/kauth.h> |
81 | #include <sys/mallocvar.h> |
82 | |
83 | #include <machine/limits.h> |
84 | |
85 | #include <uvm/uvm.h> |
86 | #include <uvm/uvm_extern.h> |
87 | |
88 | #include <netsmb/smb.h> |
89 | #include <netsmb/smb_conn.h> |
90 | #include <netsmb/smb_subr.h> |
91 | |
92 | #include <fs/smbfs/smbfs.h> |
93 | #include <fs/smbfs/smbfs_node.h> |
94 | #include <fs/smbfs/smbfs_subr.h> |
95 | |
96 | #include <miscfs/genfs/genfs.h> |
97 | |
98 | /* |
99 | * Prototypes for SMBFS vnode operations |
100 | */ |
101 | int smbfs_create(void *); |
102 | int smbfs_open(void *); |
103 | int smbfs_close(void *); |
104 | int smbfs_access(void *); |
105 | int smbfs_getattr(void *); |
106 | int smbfs_setattr(void *); |
107 | int smbfs_read(void *); |
108 | int smbfs_write(void *); |
109 | int smbfs_fsync(void *); |
110 | int smbfs_remove(void *); |
111 | int smbfs_link(void *); |
112 | int smbfs_lookup(void *); |
113 | int smbfs_rename(void *); |
114 | int smbfs_mkdir(void *); |
115 | int smbfs_rmdir(void *); |
116 | int smbfs_symlink(void *); |
117 | int smbfs_readdir(void *); |
118 | int smbfs_strategy(void *); |
119 | int smbfs_print(void *); |
120 | int smbfs_pathconf(void *ap); |
121 | int smbfs_advlock(void *); |
122 | |
123 | int (**smbfs_vnodeop_p)(void *); |
124 | static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = { |
125 | { &vop_default_desc, vn_default_error }, |
126 | { &vop_access_desc, smbfs_access }, |
127 | { &vop_advlock_desc, smbfs_advlock }, |
128 | { &vop_close_desc, smbfs_close }, |
129 | { &vop_create_desc, smbfs_create }, |
130 | { &vop_fallocate_desc, genfs_eopnotsupp }, |
131 | { &vop_fdiscard_desc, genfs_eopnotsupp }, |
132 | { &vop_fsync_desc, smbfs_fsync }, |
133 | { &vop_getattr_desc, smbfs_getattr }, |
134 | { &vop_getpages_desc, genfs_compat_getpages }, |
135 | { &vop_inactive_desc, smbfs_inactive }, |
136 | { &vop_ioctl_desc, genfs_enoioctl }, |
137 | { &vop_islocked_desc, genfs_islocked }, |
138 | { &vop_link_desc, smbfs_link }, |
139 | { &vop_lock_desc, genfs_lock }, |
140 | { &vop_lookup_desc, smbfs_lookup }, |
141 | { &vop_mkdir_desc, smbfs_mkdir }, |
142 | { &vop_mknod_desc, genfs_eopnotsupp }, |
143 | { &vop_open_desc, smbfs_open }, |
144 | { &vop_pathconf_desc, smbfs_pathconf }, |
145 | { &vop_print_desc, smbfs_print }, |
146 | { &vop_putpages_desc, genfs_putpages }, |
147 | { &vop_read_desc, smbfs_read }, |
148 | { &vop_readdir_desc, smbfs_readdir }, |
149 | { &vop_reclaim_desc, smbfs_reclaim }, |
150 | { &vop_remove_desc, smbfs_remove }, |
151 | { &vop_rename_desc, smbfs_rename }, |
152 | { &vop_rmdir_desc, smbfs_rmdir }, |
153 | { &vop_setattr_desc, smbfs_setattr }, |
154 | { &vop_strategy_desc, smbfs_strategy }, |
155 | { &vop_symlink_desc, smbfs_symlink }, |
156 | { &vop_unlock_desc, genfs_unlock }, |
157 | { &vop_write_desc, smbfs_write }, |
158 | { &vop_mmap_desc, genfs_mmap }, /* mmap */ |
159 | { &vop_seek_desc, genfs_seek }, /* seek */ |
160 | { &vop_kqfilter_desc, smbfs_kqfilter}, /* kqfilter */ |
161 | { NULL, NULL } |
162 | }; |
163 | const struct vnodeopv_desc smbfs_vnodeop_opv_desc = |
164 | { &smbfs_vnodeop_p, smbfs_vnodeop_entries }; |
165 | |
166 | static int |
167 | smbfs_check_possible(struct vnode *vp, struct smbnode *np, mode_t mode) |
168 | { |
169 | |
170 | /* |
171 | * Disallow write attempts on read-only file systems; |
172 | * unless the file is a socket, fifo, or a block or |
173 | * character device resident on the file system. |
174 | */ |
175 | if (mode & VWRITE) { |
176 | switch (vp->v_type) { |
177 | case VREG: |
178 | case VDIR: |
179 | case VLNK: |
180 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
181 | return EROFS; |
182 | default: |
183 | break; |
184 | } |
185 | } |
186 | |
187 | return 0; |
188 | } |
189 | |
190 | static int |
191 | smbfs_check_permitted(struct vnode *vp, struct smbnode *np, mode_t mode, |
192 | kauth_cred_t cred) |
193 | { |
194 | struct smbmount *smp = VTOSMBFS(vp); |
195 | mode_t file_mode = (vp->v_type == VDIR) ? smp->sm_args.dir_mode : |
196 | smp->sm_args.file_mode; |
197 | |
198 | return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, |
199 | vp->v_type, file_mode), vp, NULL, genfs_can_access(vp->v_type, |
200 | file_mode, smp->sm_args.uid, smp->sm_args.gid, mode, cred)); |
201 | } |
202 | |
203 | int |
204 | smbfs_access(void *v) |
205 | { |
206 | struct vop_access_args /* { |
207 | struct vnode *a_vp; |
208 | int a_mode; |
209 | kauth_cred_t a_cred; |
210 | } */ *ap = v; |
211 | struct vnode *vp = ap->a_vp; |
212 | struct smbnode *np = VTOSMB(vp); |
213 | u_int acc_mode = ap->a_mode; |
214 | int error; |
215 | #ifdef SMB_VNODE_DEBUG |
216 | struct smbmount *smp = VTOSMBFS(vp); |
217 | #endif |
218 | |
219 | SMBVDEBUG("file '%.*s', node mode=%o, acc mode=%x\n" , |
220 | (int) np->n_nmlen, np->n_name, |
221 | (vp->v_type == VDIR) ? smp->sm_args.dir_mode : smp->sm_args.file_mode, |
222 | acc_mode); |
223 | |
224 | error = smbfs_check_possible(vp, np, acc_mode); |
225 | if (error) |
226 | return error; |
227 | |
228 | error = smbfs_check_permitted(vp, np, acc_mode, ap->a_cred); |
229 | |
230 | return error; |
231 | } |
232 | |
233 | /* ARGSUSED */ |
234 | int |
235 | smbfs_open(void *v) |
236 | { |
237 | struct vop_open_args /* { |
238 | struct vnode *a_vp; |
239 | int a_mode; |
240 | kauth_cred_t a_cred; |
241 | } */ *ap = v; |
242 | struct lwp *l = curlwp; |
243 | struct vnode *vp = ap->a_vp; |
244 | struct smbnode *np = VTOSMB(vp); |
245 | struct smb_cred scred; |
246 | struct vattr vattr; |
247 | u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share)); |
248 | int error, accmode; |
249 | |
250 | SMBVDEBUG("%.*s,%d\n" , (int) np->n_nmlen, np->n_name, |
251 | (np->n_flag & NOPEN) != 0); |
252 | if (vp->v_type != VREG && vp->v_type != VDIR) { |
253 | SMBFSERR("open eacces vtype=%d\n" , vp->v_type); |
254 | return EACCES; |
255 | } |
256 | if (vp->v_type == VDIR) { |
257 | if ((sv_caps & SMB_CAP_NT_SMBS) == 0) { |
258 | np->n_flag |= NOPEN; |
259 | return 0; |
260 | } |
261 | goto do_open; /* skip 'modified' check */ |
262 | } |
263 | |
264 | if (np->n_flag & NMODIFIED) { |
265 | if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR) |
266 | return error; |
267 | smbfs_attr_cacheremove(vp); |
268 | error = VOP_GETATTR(vp, &vattr, ap->a_cred); |
269 | if (error) |
270 | return error; |
271 | np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; |
272 | } else { |
273 | error = VOP_GETATTR(vp, &vattr, ap->a_cred); |
274 | if (error) |
275 | return error; |
276 | if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { |
277 | error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); |
278 | if (error == EINTR) |
279 | return error; |
280 | np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; |
281 | } |
282 | } |
283 | |
284 | do_open: |
285 | if ((np->n_flag & NOPEN) != 0) |
286 | return 0; |
287 | |
288 | smb_makescred(&scred, l, ap->a_cred); |
289 | if (vp->v_type == VDIR) |
290 | error = smbfs_smb_ntcreatex(np, |
291 | SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); |
292 | else { |
293 | /* |
294 | * Use DENYNONE to give unixy semantics of permitting |
295 | * everything not forbidden by permissions. Ie denial |
296 | * is up to server with clients/openers needing to use |
297 | * advisory locks for further control. |
298 | */ |
299 | accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD; |
300 | if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) |
301 | accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW; |
302 | error = smbfs_smb_open(np, accmode, &scred); |
303 | if (error) { |
304 | if (ap->a_mode & FWRITE) |
305 | return EACCES; |
306 | |
307 | error = smbfs_smb_open(np, |
308 | SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); |
309 | } |
310 | } |
311 | if (!error) |
312 | np->n_flag |= NOPEN; |
313 | smbfs_attr_cacheremove(vp); |
314 | return error; |
315 | } |
316 | |
317 | /* |
318 | * Close called. |
319 | */ |
320 | int |
321 | smbfs_close(void *v) |
322 | { |
323 | struct vop_close_args /* { |
324 | struct vnodeop_desc *a_desc; |
325 | struct vnode *a_vp; |
326 | int a_fflag; |
327 | kauth_cred_t a_cred; |
328 | } */ *ap = v; |
329 | int error; |
330 | struct lwp *l = curlwp; |
331 | struct vnode *vp = ap->a_vp; |
332 | struct smbnode *np = VTOSMB(vp); |
333 | |
334 | /* Flush all file data */ |
335 | error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); |
336 | if (error) |
337 | return (error); |
338 | |
339 | /* |
340 | * We must close the directory lookup context now, so that |
341 | * later directory changes would be properly detected. |
342 | * Ideally, the lookup routines should handle such case, and |
343 | * the context would be removed only in smbfs_inactive(). |
344 | */ |
345 | if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0) { |
346 | struct smb_share *ssp = np->n_mount->sm_share; |
347 | struct smb_cred scred; |
348 | |
349 | smb_makescred(&scred, l, ap->a_cred); |
350 | |
351 | if (np->n_dirseq != NULL) { |
352 | smbfs_findclose(np->n_dirseq, &scred); |
353 | np->n_dirseq = NULL; |
354 | } |
355 | |
356 | if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_NT_SMBS) |
357 | smbfs_smb_close(ssp, np->n_fid, &np->n_mtime, &scred); |
358 | |
359 | np->n_flag &= ~NOPEN; |
360 | smbfs_attr_cacheremove(vp); |
361 | } |
362 | |
363 | return (0); |
364 | } |
365 | |
366 | /* |
367 | * smbfs_getattr call from vfs. |
368 | */ |
369 | int |
370 | smbfs_getattr(void *v) |
371 | { |
372 | struct vop_getattr_args /* { |
373 | struct vnode *a_vp; |
374 | struct vattr *a_vap; |
375 | kauth_cred_t a_cred; |
376 | } */ *ap = v; |
377 | struct vnode *vp = ap->a_vp; |
378 | struct smbnode *np = VTOSMB(vp); |
379 | struct vattr *va=ap->a_vap; |
380 | struct smbfattr fattr; |
381 | struct smb_cred scred; |
382 | u_quad_t oldsize; |
383 | int error; |
384 | |
385 | SMBVDEBUG("%p: '%.*s' isroot %d\n" , vp, |
386 | (int) np->n_nmlen, np->n_name, (vp->v_vflag & VV_ROOT) != 0); |
387 | |
388 | if ((error = smbfs_attr_cachelookup(vp, va)) == 0) |
389 | return (0); |
390 | |
391 | SMBVDEBUG0("not in the cache\n" ); |
392 | smb_makescred(&scred, curlwp, ap->a_cred); |
393 | oldsize = np->n_size; |
394 | error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); |
395 | if (error) { |
396 | SMBVDEBUG("error %d\n" , error); |
397 | return error; |
398 | } |
399 | smbfs_attr_cacheenter(vp, &fattr); |
400 | smbfs_attr_cachelookup(vp, va); |
401 | if ((np->n_flag & NOPEN) != 0) |
402 | np->n_size = oldsize; |
403 | return 0; |
404 | } |
405 | |
406 | int |
407 | smbfs_setattr(void *v) |
408 | { |
409 | struct vop_setattr_args /* { |
410 | struct vnode *a_vp; |
411 | struct vattr *a_vap; |
412 | kauth_cred_t a_cred; |
413 | } */ *ap = v; |
414 | struct lwp *l = curlwp; |
415 | struct vnode *vp = ap->a_vp; |
416 | struct smbnode *np = VTOSMB(vp); |
417 | struct vattr *vap = ap->a_vap; |
418 | struct timespec *mtime, *atime; |
419 | struct smb_cred scred; |
420 | struct smb_share *ssp = np->n_mount->sm_share; |
421 | struct smb_vc *vcp = SSTOVC(ssp); |
422 | u_quad_t tsize = 0; |
423 | int isreadonly, doclose, error = 0; |
424 | |
425 | SMBVDEBUG0("\n" ); |
426 | if (vap->va_flags != VNOVAL) |
427 | return EOPNOTSUPP; |
428 | isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); |
429 | /* |
430 | * Disallow write attempts if the filesystem is mounted read-only. |
431 | */ |
432 | if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || |
433 | vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || |
434 | vap->va_mode != (mode_t)VNOVAL) && isreadonly) |
435 | return EROFS; |
436 | smb_makescred(&scred, l, ap->a_cred); |
437 | if (vap->va_size != VNOVAL) { |
438 | switch (vp->v_type) { |
439 | case VDIR: |
440 | return EISDIR; |
441 | case VREG: |
442 | break; |
443 | default: |
444 | return EINVAL; |
445 | }; |
446 | if (isreadonly) |
447 | return EROFS; |
448 | doclose = 0; |
449 | tsize = np->n_size; |
450 | np->n_size = vap->va_size; |
451 | uvm_vnp_setsize(vp, vap->va_size); |
452 | if ((np->n_flag & NOPEN) == 0) { |
453 | error = smbfs_smb_open(np, |
454 | SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred); |
455 | if (error == 0) |
456 | doclose = 1; |
457 | } |
458 | if (error == 0) |
459 | error = smbfs_smb_setfsize(np, vap->va_size, &scred); |
460 | if (doclose) |
461 | smbfs_smb_close(ssp, np->n_fid, NULL, &scred); |
462 | if (error) { |
463 | np->n_size = tsize; |
464 | uvm_vnp_setsize(vp, tsize); |
465 | return (error); |
466 | } |
467 | } |
468 | mtime = atime = NULL; |
469 | if (vap->va_mtime.tv_sec != VNOVAL) |
470 | mtime = &vap->va_mtime; |
471 | if (vap->va_atime.tv_sec != VNOVAL) |
472 | atime = &vap->va_atime; |
473 | if (mtime != atime) { |
474 | error = kauth_authorize_vnode(ap->a_cred, |
475 | KAUTH_VNODE_WRITE_TIMES, ap->a_vp, NULL, |
476 | genfs_can_chtimes(ap->a_vp, vap->va_vaflags, |
477 | VTOSMBFS(vp)->sm_args.uid, ap->a_cred)); |
478 | if (error) |
479 | return (error); |
480 | |
481 | #if 0 |
482 | if (mtime == NULL) |
483 | mtime = &np->n_mtime; |
484 | if (atime == NULL) |
485 | atime = &np->n_atime; |
486 | #endif |
487 | /* |
488 | * If file is opened, then we can use handle based calls. |
489 | * If not, use path based ones. |
490 | */ |
491 | if ((np->n_flag & NOPEN) == 0) { |
492 | if (vcp->vc_flags & SMBV_WIN95) { |
493 | error = VOP_OPEN(vp, FWRITE, ap->a_cred); |
494 | if (!error) { |
495 | /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); |
496 | VOP_GETATTR(vp, &vattr, ap->a_cred);*/ |
497 | if (mtime) |
498 | np->n_mtime = *mtime; |
499 | VOP_CLOSE(vp, FWRITE, ap->a_cred); |
500 | } |
501 | } else if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) { |
502 | error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred); |
503 | } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { |
504 | error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); |
505 | } else { |
506 | error = smbfs_smb_setpattr(np, 0, mtime, &scred); |
507 | } |
508 | } else { |
509 | if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) { |
510 | error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); |
511 | } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { |
512 | error = smbfs_smb_setftime(np, mtime, atime, &scred); |
513 | } else { |
514 | /* |
515 | * XXX I have no idea how to handle this for core |
516 | * level servers. The possible solution is to |
517 | * update mtime after file is closed. |
518 | */ |
519 | } |
520 | } |
521 | } |
522 | /* |
523 | * Invalidate attribute cache in case if server doesn't set |
524 | * required attributes. |
525 | */ |
526 | smbfs_attr_cacheremove(vp); /* invalidate cache */ |
527 | VOP_GETATTR(vp, vap, ap->a_cred); |
528 | np->n_mtime.tv_sec = vap->va_mtime.tv_sec; |
529 | VN_KNOTE(vp, NOTE_ATTRIB); |
530 | return error; |
531 | } |
532 | /* |
533 | * smbfs_read call. |
534 | */ |
535 | int |
536 | smbfs_read(void *v) |
537 | { |
538 | struct vop_read_args /* { |
539 | struct vnode *a_vp; |
540 | struct uio *a_uio; |
541 | int a_ioflag; |
542 | kauth_cred_t a_cred; |
543 | } */ *ap = v; |
544 | struct vnode *vp = ap->a_vp; |
545 | |
546 | if (vp->v_type != VREG && vp->v_type != VDIR) |
547 | return EPERM; |
548 | |
549 | return smbfs_readvnode(vp, ap->a_uio, ap->a_cred); |
550 | } |
551 | |
552 | int |
553 | smbfs_write(void *v) |
554 | { |
555 | struct vop_write_args /* { |
556 | struct vnode *a_vp; |
557 | struct uio *a_uio; |
558 | int a_ioflag; |
559 | kauth_cred_t a_cred; |
560 | } */ *ap = v; |
561 | struct vnode *vp = ap->a_vp; |
562 | struct uio *uio = ap->a_uio; |
563 | |
564 | SMBVDEBUG("%d,ofs=%lld,sz=%zu\n" ,vp->v_type, |
565 | (long long int)uio->uio_offset, uio->uio_resid); |
566 | if (vp->v_type != VREG) |
567 | return (EPERM); |
568 | return smbfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag); |
569 | } |
570 | /* |
571 | * smbfs_create call |
572 | * Create a regular file. On entry the directory to contain the file being |
573 | * created is locked. We must release before we return. |
574 | */ |
575 | int |
576 | smbfs_create(void *v) |
577 | { |
578 | struct vop_create_v3_args /* { |
579 | struct vnode *a_dvp; |
580 | struct vnode **a_vpp; |
581 | struct componentname *a_cnp; |
582 | struct vattr *a_vap; |
583 | } */ *ap = v; |
584 | struct vnode *dvp = ap->a_dvp; |
585 | struct vattr *vap = ap->a_vap; |
586 | struct componentname *cnp = ap->a_cnp; |
587 | struct smbnode *dnp = VTOSMB(dvp); |
588 | struct smbfattr fattr; |
589 | struct smb_cred scred; |
590 | const char *name = cnp->cn_nameptr; |
591 | int nmlen = cnp->cn_namelen; |
592 | int error = EINVAL; |
593 | |
594 | |
595 | if (vap->va_type != VREG) |
596 | goto out; |
597 | |
598 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
599 | error = smbfs_smb_create(dnp, name, nmlen, &scred); |
600 | if (error) |
601 | goto out; |
602 | |
603 | error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); |
604 | if (error) |
605 | goto out; |
606 | error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, ap->a_vpp); |
607 | if (error) |
608 | goto out; |
609 | |
610 | cache_enter(dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen, |
611 | cnp->cn_flags); |
612 | |
613 | out: |
614 | VN_KNOTE(dvp, NOTE_WRITE); |
615 | return (error); |
616 | } |
617 | |
618 | int |
619 | smbfs_remove(void *v) |
620 | { |
621 | struct vop_remove_args /* { |
622 | struct vnodeop_desc *a_desc; |
623 | struct vnode * a_dvp; |
624 | struct vnode * a_vp; |
625 | struct componentname * a_cnp; |
626 | } */ *ap = v; |
627 | struct vnode *vp = ap->a_vp; |
628 | struct vnode *dvp = ap->a_dvp; |
629 | struct componentname *cnp = ap->a_cnp; |
630 | struct smbnode *np = VTOSMB(vp); |
631 | struct smb_cred scred; |
632 | int error; |
633 | |
634 | if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 |
635 | || vp->v_usecount != 1) { |
636 | /* XXX Eventually should do something along NFS sillyrename */ |
637 | error = EPERM; |
638 | } else { |
639 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
640 | error = smbfs_smb_delete(np, &scred); |
641 | } |
642 | if (error == 0) |
643 | np->n_flag |= NGONE; |
644 | |
645 | VN_KNOTE(ap->a_vp, NOTE_DELETE); |
646 | VN_KNOTE(ap->a_dvp, NOTE_WRITE); |
647 | if (dvp == vp) |
648 | vrele(vp); |
649 | else |
650 | vput(vp); |
651 | vput(dvp); |
652 | return (error); |
653 | } |
654 | |
655 | /* |
656 | * smbfs_file rename call |
657 | */ |
658 | int |
659 | smbfs_rename(void *v) |
660 | { |
661 | struct vop_rename_args /* { |
662 | struct vnode *a_fdvp; |
663 | struct vnode *a_fvp; |
664 | struct componentname *a_fcnp; |
665 | struct vnode *a_tdvp; |
666 | struct vnode *a_tvp; |
667 | struct componentname *a_tcnp; |
668 | } */ *ap = v; |
669 | struct vnode *fvp = ap->a_fvp; |
670 | struct vnode *tvp = ap->a_tvp; |
671 | struct vnode *fdvp = ap->a_fdvp; |
672 | struct vnode *tdvp = ap->a_tdvp; |
673 | struct componentname *tcnp = ap->a_tcnp; |
674 | /* struct componentname *fcnp = ap->a_fcnp;*/ |
675 | struct smb_cred scred; |
676 | #ifdef notyet |
677 | u_int16_t flags = 6; |
678 | #endif |
679 | int error=0; |
680 | |
681 | /* Check for cross-device rename */ |
682 | if ((fvp->v_mount != tdvp->v_mount) || |
683 | (tvp && (fvp->v_mount != tvp->v_mount))) { |
684 | error = EXDEV; |
685 | goto out; |
686 | } |
687 | |
688 | if (tvp && tvp->v_usecount > 1) { |
689 | error = EBUSY; |
690 | goto out; |
691 | } |
692 | #ifdef notnow |
693 | flags = 0x10; /* verify all writes */ |
694 | if (fvp->v_type == VDIR) { |
695 | flags |= 2; |
696 | } else if (fvp->v_type == VREG) { |
697 | flags |= 1; |
698 | } else { |
699 | error = EINVAL; |
700 | goto out; |
701 | } |
702 | #endif |
703 | smb_makescred(&scred, curlwp, tcnp->cn_cred); |
704 | /* |
705 | * It seems that Samba doesn't implement SMB_COM_MOVE call... |
706 | */ |
707 | #ifdef notnow |
708 | if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { |
709 | error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), |
710 | tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); |
711 | } else |
712 | #endif |
713 | { |
714 | /* |
715 | * We have to do the work atomicaly |
716 | */ |
717 | if (tvp && tvp != fvp) { |
718 | error = smbfs_smb_delete(VTOSMB(tvp), &scred); |
719 | if (error) |
720 | goto out; |
721 | VTOSMB(tvp)->n_flag |= NGONE; |
722 | VN_KNOTE(tdvp, NOTE_WRITE); |
723 | VN_KNOTE(tvp, NOTE_DELETE); |
724 | cache_purge(tvp); |
725 | } |
726 | error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), |
727 | tcnp->cn_nameptr, tcnp->cn_namelen, &scred); |
728 | VTOSMB(fvp)->n_flag |= NGONE; |
729 | VN_KNOTE(fdvp, NOTE_WRITE); |
730 | VN_KNOTE(fvp, NOTE_RENAME); |
731 | } |
732 | |
733 | if (fvp->v_type == VDIR) { |
734 | if (tvp != NULL && tvp->v_type == VDIR) |
735 | cache_purge(tdvp); |
736 | cache_purge(fdvp); |
737 | } |
738 | |
739 | smbfs_attr_cacheremove(fdvp); |
740 | smbfs_attr_cacheremove(tdvp); |
741 | |
742 | out: |
743 | |
744 | if (tdvp == tvp) |
745 | vrele(tdvp); |
746 | else |
747 | vput(tdvp); |
748 | if (tvp) |
749 | vput(tvp); |
750 | |
751 | vrele(fdvp); |
752 | vrele(fvp); |
753 | |
754 | return (error); |
755 | } |
756 | |
757 | /* |
758 | * somtime it will come true... |
759 | */ |
760 | int |
761 | smbfs_link(void *v) |
762 | { |
763 | return genfs_eopnotsupp(v); |
764 | } |
765 | |
766 | /* |
767 | * smbfs_symlink link create call. |
768 | * Sometime it will be functional... |
769 | */ |
770 | int |
771 | smbfs_symlink(void *v) |
772 | { |
773 | return genfs_eopnotsupp(v); |
774 | } |
775 | |
776 | int |
777 | smbfs_mkdir(void *v) |
778 | { |
779 | struct vop_mkdir_v3_args /* { |
780 | struct vnode *a_dvp; |
781 | struct vnode **a_vpp; |
782 | struct componentname *a_cnp; |
783 | struct vattr *a_vap; |
784 | } */ *ap = v; |
785 | struct vnode *dvp = ap->a_dvp; |
786 | /* struct vattr *vap = ap->a_vap;*/ |
787 | struct vnode *vp; |
788 | struct componentname *cnp = ap->a_cnp; |
789 | struct smbnode *dnp = VTOSMB(dvp); |
790 | struct smb_cred scred; |
791 | struct smbfattr fattr; |
792 | const char *name = cnp->cn_nameptr; |
793 | int len = cnp->cn_namelen; |
794 | int error; |
795 | |
796 | if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))){ |
797 | error = EEXIST; |
798 | goto out; |
799 | } |
800 | |
801 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
802 | error = smbfs_smb_mkdir(dnp, name, len, &scred); |
803 | if (error) |
804 | goto out; |
805 | error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); |
806 | if (error) |
807 | goto out; |
808 | error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); |
809 | if (error) |
810 | goto out; |
811 | *ap->a_vpp = vp; |
812 | |
813 | out: |
814 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); |
815 | |
816 | return (error); |
817 | } |
818 | |
819 | /* |
820 | * smbfs_remove directory call |
821 | */ |
822 | int |
823 | smbfs_rmdir(void *v) |
824 | { |
825 | struct vop_rmdir_args /* { |
826 | struct vnode *a_dvp; |
827 | struct vnode *a_vp; |
828 | struct componentname *a_cnp; |
829 | } */ *ap = v; |
830 | struct vnode *vp = ap->a_vp; |
831 | struct vnode *dvp = ap->a_dvp; |
832 | struct componentname *cnp = ap->a_cnp; |
833 | /* struct smbmount *smp = VTOSMBFS(vp);*/ |
834 | struct smbnode *dnp = VTOSMB(dvp); |
835 | struct smbnode *np = VTOSMB(vp); |
836 | struct smb_cred scred; |
837 | int error; |
838 | |
839 | if (dvp == vp) { |
840 | vrele(dvp); |
841 | vput(dvp); |
842 | return (EINVAL); |
843 | } |
844 | |
845 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
846 | error = smbfs_smb_rmdir(np, &scred); |
847 | if (error == 0) |
848 | np->n_flag |= NGONE; |
849 | dnp->n_flag |= NMODIFIED; |
850 | smbfs_attr_cacheremove(dvp); |
851 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); |
852 | VN_KNOTE(vp, NOTE_DELETE); |
853 | cache_purge(dvp); |
854 | cache_purge(vp); |
855 | vput(vp); |
856 | vput(dvp); |
857 | |
858 | return (error); |
859 | } |
860 | |
861 | /* |
862 | * smbfs_readdir call |
863 | */ |
864 | int |
865 | smbfs_readdir(void *v) |
866 | { |
867 | struct vop_readdir_args /* { |
868 | struct vnode *a_vp; |
869 | struct uio *a_uio; |
870 | kauth_cred_t a_cred; |
871 | int *a_eofflag; |
872 | u_long *a_cookies; |
873 | int a_ncookies; |
874 | } */ *ap = v; |
875 | struct vnode *vp = ap->a_vp; |
876 | |
877 | if (vp->v_type != VDIR) |
878 | return (EPERM); |
879 | #ifdef notnow |
880 | if (ap->a_ncookies) { |
881 | printf("smbfs_readdir: no support for cookies now..." ); |
882 | return (EOPNOTSUPP); |
883 | } |
884 | #endif |
885 | return (smbfs_readvnode(vp, ap->a_uio, ap->a_cred)); |
886 | } |
887 | |
888 | /* ARGSUSED */ |
889 | int |
890 | smbfs_fsync(void *v) |
891 | { |
892 | /*return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_l, 1));*/ |
893 | return (0); |
894 | } |
895 | |
896 | int |
897 | smbfs_print(void *v) |
898 | { |
899 | struct vop_print_args /* { |
900 | struct vnode *a_vp; |
901 | } */ *ap = v; |
902 | struct vnode *vp = ap->a_vp; |
903 | struct smbnode *np = VTOSMB(vp); |
904 | |
905 | printf("tag VT_SMBFS, name = %.*s, parent = %p, open = %d\n" , |
906 | (int)np->n_nmlen, np->n_name, |
907 | np->n_parent ? np->n_parent : NULL, |
908 | (np->n_flag & NOPEN) != 0); |
909 | return (0); |
910 | } |
911 | |
912 | int |
913 | smbfs_pathconf(void *v) |
914 | { |
915 | struct vop_pathconf_args /* { |
916 | struct vnode *vp; |
917 | int a_name; |
918 | register_t *a_retval; |
919 | } */ *ap = v; |
920 | register_t *retval = ap->a_retval; |
921 | int error = 0; |
922 | |
923 | switch (ap->a_name) { |
924 | case _PC_PIPE_BUF: |
925 | *retval = PIPE_BUF; |
926 | break; |
927 | case _PC_SYNC_IO: |
928 | *retval = 1; |
929 | break; |
930 | case _PC_LINK_MAX: |
931 | *retval = 0; |
932 | break; |
933 | case _PC_NAME_MAX: |
934 | *retval = ap->a_vp->v_mount->mnt_stat.f_namemax; |
935 | break; |
936 | case _PC_PATH_MAX: |
937 | *retval = 800; /* XXX: a correct one ? */ |
938 | break; |
939 | default: |
940 | error = EINVAL; |
941 | break; |
942 | } |
943 | |
944 | return (error); |
945 | } |
946 | |
947 | int |
948 | smbfs_strategy(void *v) |
949 | { |
950 | struct vop_strategy_args /* { |
951 | struct vnode *a_vp; |
952 | struct buf *a_bp; |
953 | } */ *ap = v; |
954 | struct buf *bp = ap->a_bp; |
955 | kauth_cred_t cr; |
956 | struct lwp *l; |
957 | int error = 0; |
958 | |
959 | SMBVDEBUG0("\n" ); |
960 | if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC)) |
961 | panic("smbfs physio/async" ); |
962 | if (bp->b_flags & B_ASYNC) { |
963 | l = NULL; |
964 | cr = NULL; |
965 | } else { |
966 | l = curlwp; /* XXX */ |
967 | cr = l->l_cred; |
968 | } |
969 | |
970 | if ((bp->b_flags & B_ASYNC) == 0) |
971 | error = smbfs_doio(bp, cr, l); |
972 | |
973 | return (error); |
974 | } |
975 | |
976 | #ifndef __NetBSD__ |
977 | static char smbfs_atl[] = "rhsvda" ; |
978 | static int |
979 | smbfs_getextattr(struct vop_getextattr_args *ap) |
980 | /* { |
981 | IN struct vnode *a_vp; |
982 | IN char *a_name; |
983 | INOUT struct uio *a_uio; |
984 | IN kauth_cred_t a_cred; |
985 | }; |
986 | */ |
987 | { |
988 | struct vnode *vp = ap->a_vp; |
989 | struct lwp *l = ap->a_l; |
990 | kauth_cred_t cred = ap->a_cred; |
991 | struct uio *uio = ap->a_uio; |
992 | const char *name = ap->a_name; |
993 | struct smbnode *np = VTOSMB(vp); |
994 | struct vattr vattr; |
995 | char buf[10]; |
996 | int i, attr, error; |
997 | |
998 | error = VOP_ACCESS(vp, VREAD, cred, td); |
999 | if (error) |
1000 | return error; |
1001 | error = VOP_GETATTR(vp, &vattr, cred, td); |
1002 | if (error) |
1003 | return error; |
1004 | if (strcmp(name, "dosattr" ) == 0) { |
1005 | attr = np->n_dosattr; |
1006 | for (i = 0; i < 6; i++, attr >>= 1) |
1007 | buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; |
1008 | buf[i] = 0; |
1009 | error = uiomove(buf, i, uio); |
1010 | |
1011 | } else |
1012 | error = EINVAL; |
1013 | return error; |
1014 | } |
1015 | #endif /* !__NetBSD__ */ |
1016 | |
1017 | /* |
1018 | * Since we expected to support F_GETLK (and SMB protocol has no such function), |
1019 | * it is necessary to use lf_advlock(). It would be nice if this function had |
1020 | * a callback mechanism because it will help to improve a level of consistency. |
1021 | */ |
1022 | int |
1023 | smbfs_advlock(void *v) |
1024 | { |
1025 | struct vop_advlock_args /* { |
1026 | struct vnode *a_vp; |
1027 | void *a_id; |
1028 | int a_op; |
1029 | struct flock *a_fl; |
1030 | int a_flags; |
1031 | } */ *ap = v; |
1032 | struct vnode *vp = ap->a_vp; |
1033 | struct smbnode *np = VTOSMB(vp); |
1034 | struct flock *fl = ap->a_fl; |
1035 | struct lwp *l = curlwp; |
1036 | struct smb_cred scred; |
1037 | u_quad_t size; |
1038 | off_t start, end, oadd; |
1039 | int error, lkop; |
1040 | |
1041 | if (vp->v_type == VDIR) { |
1042 | /* |
1043 | * SMB protocol have no support for directory locking. |
1044 | * Although locks can be processed on local machine, I don't |
1045 | * think that this is a good idea, because some programs |
1046 | * can work wrong assuming directory is locked. So, we just |
1047 | * return 'operation not supported'. |
1048 | */ |
1049 | return EOPNOTSUPP; |
1050 | } |
1051 | size = np->n_size; |
1052 | switch (fl->l_whence) { |
1053 | |
1054 | case SEEK_SET: |
1055 | case SEEK_CUR: |
1056 | start = fl->l_start; |
1057 | break; |
1058 | |
1059 | case SEEK_END: |
1060 | #ifndef __NetBSD__ |
1061 | if (size > OFF_MAX || |
1062 | (fl->l_start > 0 && size > OFF_MAX - fl->l_start)) |
1063 | return EOVERFLOW; |
1064 | #endif |
1065 | start = size + fl->l_start; |
1066 | break; |
1067 | |
1068 | default: |
1069 | return EINVAL; |
1070 | } |
1071 | if (start < 0) |
1072 | return EINVAL; |
1073 | if (fl->l_len < 0) { |
1074 | if (start == 0) |
1075 | return EINVAL; |
1076 | end = start - 1; |
1077 | start += fl->l_len; |
1078 | if (start < 0) |
1079 | return EINVAL; |
1080 | } else if (fl->l_len == 0) |
1081 | end = -1; |
1082 | else { |
1083 | oadd = fl->l_len - 1; |
1084 | #ifndef __NetBSD__ |
1085 | if (oadd > OFF_MAX - start) |
1086 | return EOVERFLOW; |
1087 | #endif |
1088 | end = start + oadd; |
1089 | } |
1090 | smb_makescred(&scred, l, l ? l->l_cred : NULL); |
1091 | switch (ap->a_op) { |
1092 | case F_SETLK: |
1093 | switch (fl->l_type) { |
1094 | case F_WRLCK: |
1095 | lkop = SMB_LOCK_EXCL; |
1096 | break; |
1097 | case F_RDLCK: |
1098 | lkop = SMB_LOCK_SHARED; |
1099 | break; |
1100 | case F_UNLCK: |
1101 | lkop = SMB_LOCK_RELEASE; |
1102 | break; |
1103 | default: |
1104 | return EINVAL; |
1105 | } |
1106 | error = lf_advlock(ap, &np->n_lockf, size); |
1107 | if (error) |
1108 | break; |
1109 | /* |
1110 | * The ID we use for smb_lock is passed as PID to SMB |
1111 | * server. It MUST agree with PID as setup in basic |
1112 | * SMB header in later write requests, otherwise SMB server |
1113 | * returns EDEADLK. See also smb_rq_new() on SMB header setup. |
1114 | */ |
1115 | error = smbfs_smb_lock(np, lkop,(void *)1, start, end, &scred); |
1116 | if (error) { |
1117 | ap->a_op = F_UNLCK; |
1118 | lf_advlock(ap, &np->n_lockf, size); |
1119 | } |
1120 | break; |
1121 | case F_UNLCK: |
1122 | lf_advlock(ap, &np->n_lockf, size); |
1123 | error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, ap->a_id, start, end, &scred); |
1124 | break; |
1125 | case F_GETLK: |
1126 | error = lf_advlock(ap, &np->n_lockf, size); |
1127 | break; |
1128 | default: |
1129 | return EINVAL; |
1130 | } |
1131 | |
1132 | return error; |
1133 | } |
1134 | |
1135 | static int |
1136 | smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen) |
1137 | { |
1138 | static const char * const badchars = "*/\\:<>;?" ; |
1139 | static const char * const badchars83 = " +|,[]=" ; |
1140 | const char *cp; |
1141 | int i; |
1142 | |
1143 | if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { |
1144 | /* |
1145 | * Name should conform 8.3 format |
1146 | */ |
1147 | if (nmlen > 12) |
1148 | return (ENAMETOOLONG); |
1149 | |
1150 | if ((cp = memchr(name, '.', nmlen)) == NULL |
1151 | || cp == name || (cp - name) > 8 |
1152 | || (cp = memchr(cp + 1, '.', nmlen - (cp - name))) != NULL) |
1153 | goto bad; |
1154 | |
1155 | for (cp = name, i = 0; i < nmlen; i++, cp++) |
1156 | if (strchr(badchars83, *cp) != NULL) |
1157 | goto bad; |
1158 | } |
1159 | |
1160 | for (cp = name, i = 0; i < nmlen; i++, cp++) |
1161 | if (strchr(badchars, *cp) != NULL) |
1162 | goto bad; |
1163 | |
1164 | /* name is fine */ |
1165 | return (0); |
1166 | |
1167 | bad: |
1168 | return (ENOENT); |
1169 | } |
1170 | |
1171 | /* |
1172 | * Things go even weird without fixed inode numbers... |
1173 | */ |
1174 | int |
1175 | smbfs_lookup(void *v) |
1176 | { |
1177 | struct vop_lookup_v2_args /* { |
1178 | struct vnode *a_dvp; |
1179 | struct vnode **a_vpp; |
1180 | struct componentname *a_cnp; |
1181 | } */ *ap = v; |
1182 | struct componentname *cnp = ap->a_cnp; |
1183 | struct vnode *dvp = ap->a_dvp; |
1184 | struct vnode **vpp = ap->a_vpp; |
1185 | struct mount *mp = dvp->v_mount; |
1186 | struct smbnode *dnp; |
1187 | struct smbfattr fattr; |
1188 | struct smb_cred scred; |
1189 | const char *name = cnp->cn_nameptr; |
1190 | int flags = cnp->cn_flags; |
1191 | int nameiop = cnp->cn_nameiop; |
1192 | int nmlen = cnp->cn_namelen; |
1193 | int error, islastcn, isdot; |
1194 | |
1195 | /* |
1196 | * Check accessiblity of directory. |
1197 | */ |
1198 | error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred); |
1199 | if (error) |
1200 | return (error); |
1201 | |
1202 | if ((cnp->cn_flags & ISLASTCN) && |
1203 | (dvp->v_mount->mnt_flag & MNT_RDONLY) && |
1204 | (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) |
1205 | return (EROFS); |
1206 | |
1207 | SMBVDEBUG("%d '%.*s' in '%.*s'\n" , nameiop, nmlen, name, |
1208 | (int) VTOSMB(dvp)->n_nmlen, VTOSMB(dvp)->n_name); |
1209 | |
1210 | islastcn = flags & ISLASTCN; |
1211 | |
1212 | /* |
1213 | * Before tediously performing a linear scan of the directory, |
1214 | * check the name cache to see if the directory/name pair |
1215 | * we are looking for is known already. |
1216 | * If the directory/name pair is found in the name cache, |
1217 | * we have to ensure the directory has not changed from |
1218 | * the time the cache entry has been created. If it has, |
1219 | * the cache entry has to be ignored. |
1220 | */ |
1221 | if (cache_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen, |
1222 | cnp->cn_nameiop, cnp->cn_flags, |
1223 | NULL, vpp)) { |
1224 | struct vattr vattr; |
1225 | struct vnode *newvp; |
1226 | bool killit = false; |
1227 | |
1228 | error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred); |
1229 | if (error != 0) { |
1230 | if (*vpp != NULLVP) { |
1231 | vrele(*vpp); |
1232 | } |
1233 | *vpp = NULLVP; |
1234 | return error; |
1235 | } |
1236 | |
1237 | if (*vpp == NULLVP) { |
1238 | if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred) |
1239 | && vattr.va_mtime.tv_sec == VTOSMB(dvp)->n_nctime) |
1240 | return ENOENT; |
1241 | cache_purge(dvp); |
1242 | VTOSMB(dvp)->n_nctime = 0; |
1243 | goto dolookup; |
1244 | } |
1245 | |
1246 | newvp = *vpp; |
1247 | if (newvp != dvp) |
1248 | vn_lock(newvp, LK_SHARED | LK_RETRY); |
1249 | error = VOP_GETATTR(newvp, &vattr, cnp->cn_cred); |
1250 | /* |
1251 | * If the file type on the server is inconsistent |
1252 | * with what it was when we created the vnode, |
1253 | * kill the bogus vnode now and fall through to |
1254 | * the code below to create a new one with the |
1255 | * right type. |
1256 | */ |
1257 | if (error == 0 && |
1258 | ((newvp->v_type == VDIR && |
1259 | (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) == 0) || |
1260 | (newvp->v_type == VREG && |
1261 | (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) != 0))) |
1262 | killit = true; |
1263 | else if (error == 0 |
1264 | && vattr.va_ctime.tv_sec == VTOSMB(newvp)->n_ctime) |
1265 | { |
1266 | if (newvp != dvp) |
1267 | VOP_UNLOCK(newvp); |
1268 | /* nfsstats.lookupcache_hits++; */ |
1269 | return (0); |
1270 | } |
1271 | |
1272 | cache_purge(newvp); |
1273 | if (newvp != dvp) { |
1274 | if (killit) { |
1275 | VOP_UNLOCK(newvp); |
1276 | vgone(newvp); |
1277 | } else |
1278 | vput(newvp); |
1279 | } else |
1280 | vrele(newvp); |
1281 | *vpp = NULLVP; |
1282 | } |
1283 | |
1284 | dolookup: |
1285 | |
1286 | /* ensure the name is sane */ |
1287 | if (nameiop != LOOKUP) { |
1288 | error = smbfs_pathcheck(VFSTOSMBFS(mp), cnp->cn_nameptr, |
1289 | cnp->cn_namelen); |
1290 | if (error) |
1291 | return (error); |
1292 | } |
1293 | |
1294 | dnp = VTOSMB(dvp); |
1295 | isdot = (nmlen == 1 && name[0] == '.'); |
1296 | |
1297 | /* |
1298 | * entry is not in the cache or has been expired |
1299 | */ |
1300 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
1301 | if (flags & ISDOTDOT) |
1302 | error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, |
1303 | &fattr, &scred); |
1304 | else |
1305 | error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); |
1306 | |
1307 | if (error) { |
1308 | /* Not found */ |
1309 | |
1310 | if (error != ENOENT) |
1311 | return (error); |
1312 | |
1313 | /* |
1314 | * Handle RENAME or CREATE case... |
1315 | */ |
1316 | if ((nameiop == CREATE || nameiop == RENAME) && islastcn) { |
1317 | /* |
1318 | * Access for write is interpreted as allowing |
1319 | * creation of files in the directory. |
1320 | */ |
1321 | error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); |
1322 | if (error) |
1323 | return (error); |
1324 | |
1325 | return (EJUSTRETURN); |
1326 | } |
1327 | |
1328 | /* |
1329 | * Insert name into cache (as non-existent) if appropriate. |
1330 | */ |
1331 | if (nameiop != CREATE) |
1332 | cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, |
1333 | cnp->cn_flags); |
1334 | |
1335 | return (ENOENT); |
1336 | } |
1337 | |
1338 | /* Found */ |
1339 | |
1340 | /* Handle RENAME case... */ |
1341 | if (nameiop == RENAME && islastcn) { |
1342 | error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); |
1343 | if (error) |
1344 | return (error); |
1345 | |
1346 | if (isdot) |
1347 | return (EISDIR); |
1348 | error = smbfs_nget(mp, dvp, name, nmlen, &fattr, vpp); |
1349 | if (error) |
1350 | return (error); |
1351 | return (0); |
1352 | } |
1353 | |
1354 | if (isdot) { |
1355 | vref(dvp); |
1356 | *vpp = dvp; |
1357 | error = 0; |
1358 | } else { |
1359 | error = smbfs_nget(mp, dvp, name, nmlen, |
1360 | ((flags & ISDOTDOT) ? NULL : &fattr), vpp); |
1361 | } |
1362 | if (error) |
1363 | return error; |
1364 | |
1365 | if (cnp->cn_nameiop != DELETE || !islastcn) { |
1366 | VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_mtime.tv_sec; |
1367 | cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, |
1368 | cnp->cn_flags); |
1369 | #ifdef notdef |
1370 | } else if (error == ENOENT && cnp->cn_nameiop != CREATE) { |
1371 | VTOSMB(*vpp)->n_nctime = VTOSMB(*vpp)->n_mtime.tv_sec; |
1372 | cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, |
1373 | cnp->cn_flags); |
1374 | #endif |
1375 | } |
1376 | |
1377 | return (0); |
1378 | } |
1379 | |